/**
* @license
* Video.js 8.17.4
*
* Includes vtt.js
* Available under Apache License Version 2.0
*
*/
(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
typeof define === 'function' && define.amd ? define(factory) :
(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.videojs = factory());
})(this, (function () { 'use strict';
var version$5 = "8.17.4";
/**
* An Object that contains lifecycle hooks as keys which point to an array
* of functions that are run when a lifecycle is triggered
*
* @private
*/
const hooks_ = {};
/**
* Get a list of hooks for a specific lifecycle
*
* @param {string} type
* the lifecycle to get hooks from
*
* @param {Function|Function[]} [fn]
* Optionally add a hook (or hooks) to the lifecycle that your are getting.
*
* @return {Array}
* an array of hooks, or an empty array if there are none.
*/
const hooks = function (type, fn) {
hooks_[type] = hooks_[type] || [];
if (fn) {
hooks_[type] = hooks_[type].concat(fn);
}
return hooks_[type];
};
/**
* Add a function hook to a specific videojs lifecycle.
*
* @param {string} type
* the lifecycle to hook the function to.
*
* @param {Function|Function[]}
* The function or array of functions to attach.
*/
const hook = function (type, fn) {
hooks(type, fn);
};
/**
* Remove a hook from a specific videojs lifecycle.
*
* @param {string} type
* the lifecycle that the function hooked to
*
* @param {Function} fn
* The hooked function to remove
*
* @return {boolean}
* The function that was removed or undef
*/
const removeHook = function (type, fn) {
const index = hooks(type).indexOf(fn);
if (index <= -1) {
return false;
}
hooks_[type] = hooks_[type].slice();
hooks_[type].splice(index, 1);
return true;
};
/**
* Add a function hook that will only run once to a specific videojs lifecycle.
*
* @param {string} type
* the lifecycle to hook the function to.
*
* @param {Function|Function[]}
* The function or array of functions to attach.
*/
const hookOnce = function (type, fn) {
hooks(type, [].concat(fn).map(original => {
const wrapper = (...args) => {
removeHook(type, wrapper);
return original(...args);
};
return wrapper;
}));
};
/**
* @file fullscreen-api.js
* @module fullscreen-api
*/
/**
* Store the browser-specific methods for the fullscreen API.
*
* @type {Object}
* @see [Specification]{@link https://fullscreen.spec.whatwg.org}
* @see [Map Approach From Screenfull.js]{@link https://github.com/sindresorhus/screenfull.js}
*/
const FullscreenApi = {
prefixed: true
};
// browser API methods
const apiMap = [['requestFullscreen', 'exitFullscreen', 'fullscreenElement', 'fullscreenEnabled', 'fullscreenchange', 'fullscreenerror', 'fullscreen'],
// WebKit
['webkitRequestFullscreen', 'webkitExitFullscreen', 'webkitFullscreenElement', 'webkitFullscreenEnabled', 'webkitfullscreenchange', 'webkitfullscreenerror', '-webkit-full-screen']];
const specApi = apiMap[0];
let browserApi;
// determine the supported set of functions
for (let i = 0; i < apiMap.length; i++) {
// check for exitFullscreen function
if (apiMap[i][1] in document) {
browserApi = apiMap[i];
break;
}
}
// map the browser API names to the spec API names
if (browserApi) {
for (let i = 0; i < browserApi.length; i++) {
FullscreenApi[specApi[i]] = browserApi[i];
}
FullscreenApi.prefixed = browserApi[0] !== specApi[0];
}
/**
* @file create-logger.js
* @module create-logger
*/
// This is the private tracking variable for the logging history.
let history = [];
/**
* Log messages to the console and history based on the type of message
*
* @private
* @param {string} name
* The name of the console method to use.
*
* @param {Object} log
* The arguments to be passed to the matching console method.
*
* @param {string} [styles]
* styles for name
*/
const LogByTypeFactory = (name, log, styles) => (type, level, args) => {
const lvl = log.levels[level];
const lvlRegExp = new RegExp(`^(${lvl})$`);
let resultName = name;
if (type !== 'log') {
// Add the type to the front of the message when it's not "log".
args.unshift(type.toUpperCase() + ':');
}
if (styles) {
resultName = `%c${name}`;
args.unshift(styles);
}
// Add console prefix after adding to history.
args.unshift(resultName + ':');
// Add a clone of the args at this point to history.
if (history) {
history.push([].concat(args));
// only store 1000 history entries
const splice = history.length - 1000;
history.splice(0, splice > 0 ? splice : 0);
}
// If there's no console then don't try to output messages, but they will
// still be stored in history.
if (!window.console) {
return;
}
// Was setting these once outside of this function, but containing them
// in the function makes it easier to test cases where console doesn't exist
// when the module is executed.
let fn = window.console[type];
if (!fn && type === 'debug') {
// Certain browsers don't have support for console.debug. For those, we
// should default to the closest comparable log.
fn = window.console.info || window.console.log;
}
// Bail out if there's no console or if this type is not allowed by the
// current logging level.
if (!fn || !lvl || !lvlRegExp.test(type)) {
return;
}
fn[Array.isArray(args) ? 'apply' : 'call'](window.console, args);
};
function createLogger$1(name, delimiter = ':', styles = '') {
// This is the private tracking variable for logging level.
let level = 'info';
// the curried logByType bound to the specific log and history
let logByType;
/**
* Logs plain debug messages. Similar to `console.log`.
*
* Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
* of our JSDoc template, we cannot properly document this as both a function
* and a namespace, so its function signature is documented here.
*
* #### Arguments
* ##### *args
* *[]
*
* Any combination of values that could be passed to `console.log()`.
*
* #### Return Value
*
* `undefined`
*
* @namespace
* @param {...*} args
* One or more messages or objects that should be logged.
*/
function log(...args) {
logByType('log', level, args);
}
// This is the logByType helper that the logging methods below use
logByType = LogByTypeFactory(name, log, styles);
/**
* Create a new subLogger which chains the old name to the new name.
*
* For example, doing `mylogger = videojs.log.createLogger('player')` and then using that logger will log the following:
* ```js
* mylogger('foo');
* // > VIDEOJS: player: foo
* ```
*
* @param {string} subName
* The name to add call the new logger
* @param {string} [subDelimiter]
* Optional delimiter
* @param {string} [subStyles]
* Optional styles
* @return {Object}
*/
log.createLogger = (subName, subDelimiter, subStyles) => {
const resultDelimiter = subDelimiter !== undefined ? subDelimiter : delimiter;
const resultStyles = subStyles !== undefined ? subStyles : styles;
const resultName = `${name} ${resultDelimiter} ${subName}`;
return createLogger$1(resultName, resultDelimiter, resultStyles);
};
/**
* Create a new logger.
*
* @param {string} newName
* The name for the new logger
* @param {string} [newDelimiter]
* Optional delimiter
* @param {string} [newStyles]
* Optional styles
* @return {Object}
*/
log.createNewLogger = (newName, newDelimiter, newStyles) => {
return createLogger$1(newName, newDelimiter, newStyles);
};
/**
* Enumeration of available logging levels, where the keys are the level names
* and the values are `|`-separated strings containing logging methods allowed
* in that logging level. These strings are used to create a regular expression
* matching the function name being called.
*
* Levels provided by Video.js are:
*
* - `off`: Matches no calls. Any value that can be cast to `false` will have
* this effect. The most restrictive.
* - `all`: Matches only Video.js-provided functions (`debug`, `log`,
* `log.warn`, and `log.error`).
* - `debug`: Matches `log.debug`, `log`, `log.warn`, and `log.error` calls.
* - `info` (default): Matches `log`, `log.warn`, and `log.error` calls.
* - `warn`: Matches `log.warn` and `log.error` calls.
* - `error`: Matches only `log.error` calls.
*
* @type {Object}
*/
log.levels = {
all: 'debug|log|warn|error',
off: '',
debug: 'debug|log|warn|error',
info: 'log|warn|error',
warn: 'warn|error',
error: 'error',
DEFAULT: level
};
/**
* Get or set the current logging level.
*
* If a string matching a key from {@link module:log.levels} is provided, acts
* as a setter.
*
* @param {'all'|'debug'|'info'|'warn'|'error'|'off'} [lvl]
* Pass a valid level to set a new logging level.
*
* @return {string}
* The current logging level.
*/
log.level = lvl => {
if (typeof lvl === 'string') {
if (!log.levels.hasOwnProperty(lvl)) {
throw new Error(`"${lvl}" in not a valid log level`);
}
level = lvl;
}
return level;
};
/**
* Returns an array containing everything that has been logged to the history.
*
* This array is a shallow clone of the internal history record. However, its
* contents are _not_ cloned; so, mutating objects inside this array will
* mutate them in history.
*
* @return {Array}
*/
log.history = () => history ? [].concat(history) : [];
/**
* Allows you to filter the history by the given logger name
*
* @param {string} fname
* The name to filter by
*
* @return {Array}
* The filtered list to return
*/
log.history.filter = fname => {
return (history || []).filter(historyItem => {
// if the first item in each historyItem includes `fname`, then it's a match
return new RegExp(`.*${fname}.*`).test(historyItem[0]);
});
};
/**
* Clears the internal history tracking, but does not prevent further history
* tracking.
*/
log.history.clear = () => {
if (history) {
history.length = 0;
}
};
/**
* Disable history tracking if it is currently enabled.
*/
log.history.disable = () => {
if (history !== null) {
history.length = 0;
history = null;
}
};
/**
* Enable history tracking if it is currently disabled.
*/
log.history.enable = () => {
if (history === null) {
history = [];
}
};
/**
* Logs error messages. Similar to `console.error`.
*
* @param {...*} args
* One or more messages or objects that should be logged as an error
*/
log.error = (...args) => logByType('error', level, args);
/**
* Logs warning messages. Similar to `console.warn`.
*
* @param {...*} args
* One or more messages or objects that should be logged as a warning.
*/
log.warn = (...args) => logByType('warn', level, args);
/**
* Logs debug messages. Similar to `console.debug`, but may also act as a comparable
* log if `console.debug` is not available
*
* @param {...*} args
* One or more messages or objects that should be logged as debug.
*/
log.debug = (...args) => logByType('debug', level, args);
return log;
}
/**
* @file log.js
* @module log
*/
const log$1 = createLogger$1('VIDEOJS');
const createLogger = log$1.createLogger;
/**
* @file obj.js
* @module obj
*/
/**
* @callback obj:EachCallback
*
* @param {*} value
* The current key for the object that is being iterated over.
*
* @param {string} key
* The current key-value for object that is being iterated over
*/
/**
* @callback obj:ReduceCallback
*
* @param {*} accum
* The value that is accumulating over the reduce loop.
*
* @param {*} value
* The current key for the object that is being iterated over.
*
* @param {string} key
* The current key-value for object that is being iterated over
*
* @return {*}
* The new accumulated value.
*/
const toString$1 = Object.prototype.toString;
/**
* Get the keys of an Object
*
* @param {Object}
* The Object to get the keys from
*
* @return {string[]}
* An array of the keys from the object. Returns an empty array if the
* object passed in was invalid or had no keys.
*
* @private
*/
const keys = function (object) {
return isObject$1(object) ? Object.keys(object) : [];
};
/**
* Array-like iteration for objects.
*
* @param {Object} object
* The object to iterate over
*
* @param {obj:EachCallback} fn
* The callback function which is called for each key in the object.
*/
function each(object, fn) {
keys(object).forEach(key => fn(object[key], key));
}
/**
* Array-like reduce for objects.
*
* @param {Object} object
* The Object that you want to reduce.
*
* @param {Function} fn
* A callback function which is called for each key in the object. It
* receives the accumulated value and the per-iteration value and key
* as arguments.
*
* @param {*} [initial = 0]
* Starting value
*
* @return {*}
* The final accumulated value.
*/
function reduce(object, fn, initial = 0) {
return keys(object).reduce((accum, key) => fn(accum, object[key], key), initial);
}
/**
* Returns whether a value is an object of any kind - including DOM nodes,
* arrays, regular expressions, etc. Not functions, though.
*
* This avoids the gotcha where using `typeof` on a `null` value
* results in `'object'`.
*
* @param {Object} value
* @return {boolean}
*/
function isObject$1(value) {
return !!value && typeof value === 'object';
}
/**
* Returns whether an object appears to be a "plain" object - that is, a
* direct instance of `Object`.
*
* @param {Object} value
* @return {boolean}
*/
function isPlain(value) {
return isObject$1(value) && toString$1.call(value) === '[object Object]' && value.constructor === Object;
}
/**
* Merge two objects recursively.
*
* Performs a deep merge like
* {@link https://lodash.com/docs/4.17.10#merge|lodash.merge}, but only merges
* plain objects (not arrays, elements, or anything else).
*
* Non-plain object values will be copied directly from the right-most
* argument.
*
* @param {Object[]} sources
* One or more objects to merge into a new object.
*
* @return {Object}
* A new object that is the merged result of all sources.
*/
function merge$2(...sources) {
const result = {};
sources.forEach(source => {
if (!source) {
return;
}
each(source, (value, key) => {
if (!isPlain(value)) {
result[key] = value;
return;
}
if (!isPlain(result[key])) {
result[key] = {};
}
result[key] = merge$2(result[key], value);
});
});
return result;
}
/**
* Returns an array of values for a given object
*
* @param {Object} source - target object
* @return {Array} - object values
*/
function values$1(source = {}) {
const result = [];
for (const key in source) {
if (source.hasOwnProperty(key)) {
const value = source[key];
result.push(value);
}
}
return result;
}
/**
* Object.defineProperty but "lazy", which means that the value is only set after
* it is retrieved the first time, rather than being set right away.
*
* @param {Object} obj the object to set the property on
* @param {string} key the key for the property to set
* @param {Function} getValue the function used to get the value when it is needed.
* @param {boolean} setter whether a setter should be allowed or not
*/
function defineLazyProperty(obj, key, getValue, setter = true) {
const set = value => Object.defineProperty(obj, key, {
value,
enumerable: true,
writable: true
});
const options = {
configurable: true,
enumerable: true,
get() {
const value = getValue();
set(value);
return value;
}
};
if (setter) {
options.set = set;
}
return Object.defineProperty(obj, key, options);
}
var Obj = /*#__PURE__*/Object.freeze({
__proto__: null,
each: each,
reduce: reduce,
isObject: isObject$1,
isPlain: isPlain,
merge: merge$2,
values: values$1,
defineLazyProperty: defineLazyProperty
});
/**
* @file browser.js
* @module browser
*/
/**
* Whether or not this device is an iPod.
*
* @static
* @type {Boolean}
*/
let IS_IPOD = false;
/**
* The detected iOS version - or `null`.
*
* @static
* @type {string|null}
*/
let IOS_VERSION = null;
/**
* Whether or not this is an Android device.
*
* @static
* @type {Boolean}
*/
let IS_ANDROID = false;
/**
* The detected Android version - or `null` if not Android or indeterminable.
*
* @static
* @type {number|string|null}
*/
let ANDROID_VERSION;
/**
* Whether or not this is Mozilla Firefox.
*
* @static
* @type {Boolean}
*/
let IS_FIREFOX = false;
/**
* Whether or not this is Microsoft Edge.
*
* @static
* @type {Boolean}
*/
let IS_EDGE = false;
/**
* Whether or not this is any Chromium Browser
*
* @static
* @type {Boolean}
*/
let IS_CHROMIUM = false;
/**
* Whether or not this is any Chromium browser that is not Edge.
*
* This will also be `true` for Chrome on iOS, which will have different support
* as it is actually Safari under the hood.
*
* Deprecated, as the behaviour to not match Edge was to prevent Legacy Edge's UA matching.
* IS_CHROMIUM should be used instead.
* "Chromium but not Edge" could be explicitly tested with IS_CHROMIUM && !IS_EDGE
*
* @static
* @deprecated
* @type {Boolean}
*/
let IS_CHROME = false;
/**
* The detected Chromium version - or `null`.
*
* @static
* @type {number|null}
*/
let CHROMIUM_VERSION = null;
/**
* The detected Google Chrome version - or `null`.
* This has always been the _Chromium_ version, i.e. would return on Chromium Edge.
* Deprecated, use CHROMIUM_VERSION instead.
*
* @static
* @deprecated
* @type {number|null}
*/
let CHROME_VERSION = null;
/**
* Whether or not this is a Chromecast receiver application.
*
* @static
* @type {Boolean}
*/
const IS_CHROMECAST_RECEIVER = Boolean(window.cast && window.cast.framework && window.cast.framework.CastReceiverContext);
/**
* The detected Internet Explorer version - or `null`.
*
* @static
* @deprecated
* @type {number|null}
*/
let IE_VERSION = null;
/**
* Whether or not this is desktop Safari.
*
* @static
* @type {Boolean}
*/
let IS_SAFARI = false;
/**
* Whether or not this is a Windows machine.
*
* @static
* @type {Boolean}
*/
let IS_WINDOWS = false;
/**
* Whether or not this device is an iPad.
*
* @static
* @type {Boolean}
*/
let IS_IPAD = false;
/**
* Whether or not this device is an iPhone.
*
* @static
* @type {Boolean}
*/
// The Facebook app's UIWebView identifies as both an iPhone and iPad, so
// to identify iPhones, we need to exclude iPads.
// http://artsy.github.io/blog/2012/10/18/the-perils-of-ios-user-agent-sniffing/
let IS_IPHONE = false;
/**
* Whether or not this is a Tizen device.
*
* @static
* @type {Boolean}
*/
let IS_TIZEN = false;
/**
* Whether or not this is a WebOS device.
*
* @static
* @type {Boolean}
*/
let IS_WEBOS = false;
/**
* Whether or not this is a Smart TV (Tizen or WebOS) device.
*
* @static
* @type {Boolean}
*/
let IS_SMART_TV = false;
/**
* Whether or not this device is touch-enabled.
*
* @static
* @const
* @type {Boolean}
*/
const TOUCH_ENABLED = Boolean(isReal() && ('ontouchstart' in window || window.navigator.maxTouchPoints || window.DocumentTouch && window.document instanceof window.DocumentTouch));
const UAD = window.navigator && window.navigator.userAgentData;
if (UAD && UAD.platform && UAD.brands) {
// If userAgentData is present, use it instead of userAgent to avoid warnings
// Currently only implemented on Chromium
// userAgentData does not expose Android version, so ANDROID_VERSION remains `null`
IS_ANDROID = UAD.platform === 'Android';
IS_EDGE = Boolean(UAD.brands.find(b => b.brand === 'Microsoft Edge'));
IS_CHROMIUM = Boolean(UAD.brands.find(b => b.brand === 'Chromium'));
IS_CHROME = !IS_EDGE && IS_CHROMIUM;
CHROMIUM_VERSION = CHROME_VERSION = (UAD.brands.find(b => b.brand === 'Chromium') || {}).version || null;
IS_WINDOWS = UAD.platform === 'Windows';
}
// If the browser is not Chromium, either userAgentData is not present which could be an old Chromium browser,
// or it's a browser that has added userAgentData since that we don't have tests for yet. In either case,
// the checks need to be made agiainst the regular userAgent string.
if (!IS_CHROMIUM) {
const USER_AGENT = window.navigator && window.navigator.userAgent || '';
IS_IPOD = /iPod/i.test(USER_AGENT);
IOS_VERSION = function () {
const match = USER_AGENT.match(/OS (\d+)_/i);
if (match && match[1]) {
return match[1];
}
return null;
}();
IS_ANDROID = /Android/i.test(USER_AGENT);
ANDROID_VERSION = function () {
// This matches Android Major.Minor.Patch versions
// ANDROID_VERSION is Major.Minor as a Number, if Minor isn't available, then only Major is returned
const match = USER_AGENT.match(/Android (\d+)(?:\.(\d+))?(?:\.(\d+))*/i);
if (!match) {
return null;
}
const major = match[1] && parseFloat(match[1]);
const minor = match[2] && parseFloat(match[2]);
if (major && minor) {
return parseFloat(match[1] + '.' + match[2]);
} else if (major) {
return major;
}
return null;
}();
IS_FIREFOX = /Firefox/i.test(USER_AGENT);
IS_EDGE = /Edg/i.test(USER_AGENT);
IS_CHROMIUM = /Chrome/i.test(USER_AGENT) || /CriOS/i.test(USER_AGENT);
IS_CHROME = !IS_EDGE && IS_CHROMIUM;
CHROMIUM_VERSION = CHROME_VERSION = function () {
const match = USER_AGENT.match(/(Chrome|CriOS)\/(\d+)/);
if (match && match[2]) {
return parseFloat(match[2]);
}
return null;
}();
IE_VERSION = function () {
const result = /MSIE\s(\d+)\.\d/.exec(USER_AGENT);
let version = result && parseFloat(result[1]);
if (!version && /Trident\/7.0/i.test(USER_AGENT) && /rv:11.0/.test(USER_AGENT)) {
// IE 11 has a different user agent string than other IE versions
version = 11.0;
}
return version;
}();
IS_TIZEN = /Tizen/i.test(USER_AGENT);
IS_WEBOS = /Web0S/i.test(USER_AGENT);
IS_SMART_TV = IS_TIZEN || IS_WEBOS;
IS_SAFARI = /Safari/i.test(USER_AGENT) && !IS_CHROME && !IS_ANDROID && !IS_EDGE && !IS_SMART_TV;
IS_WINDOWS = /Windows/i.test(USER_AGENT);
IS_IPAD = /iPad/i.test(USER_AGENT) || IS_SAFARI && TOUCH_ENABLED && !/iPhone/i.test(USER_AGENT);
IS_IPHONE = /iPhone/i.test(USER_AGENT) && !IS_IPAD;
}
/**
* Whether or not this is an iOS device.
*
* @static
* @const
* @type {Boolean}
*/
const IS_IOS = IS_IPHONE || IS_IPAD || IS_IPOD;
/**
* Whether or not this is any flavor of Safari - including iOS.
*
* @static
* @const
* @type {Boolean}
*/
const IS_ANY_SAFARI = (IS_SAFARI || IS_IOS) && !IS_CHROME;
var browser = /*#__PURE__*/Object.freeze({
__proto__: null,
get IS_IPOD () { return IS_IPOD; },
get IOS_VERSION () { return IOS_VERSION; },
get IS_ANDROID () { return IS_ANDROID; },
get ANDROID_VERSION () { return ANDROID_VERSION; },
get IS_FIREFOX () { return IS_FIREFOX; },
get IS_EDGE () { return IS_EDGE; },
get IS_CHROMIUM () { return IS_CHROMIUM; },
get IS_CHROME () { return IS_CHROME; },
get CHROMIUM_VERSION () { return CHROMIUM_VERSION; },
get CHROME_VERSION () { return CHROME_VERSION; },
IS_CHROMECAST_RECEIVER: IS_CHROMECAST_RECEIVER,
get IE_VERSION () { return IE_VERSION; },
get IS_SAFARI () { return IS_SAFARI; },
get IS_WINDOWS () { return IS_WINDOWS; },
get IS_IPAD () { return IS_IPAD; },
get IS_IPHONE () { return IS_IPHONE; },
get IS_TIZEN () { return IS_TIZEN; },
get IS_WEBOS () { return IS_WEBOS; },
get IS_SMART_TV () { return IS_SMART_TV; },
TOUCH_ENABLED: TOUCH_ENABLED,
IS_IOS: IS_IOS,
IS_ANY_SAFARI: IS_ANY_SAFARI
});
/**
* @file dom.js
* @module dom
*/
/**
* Detect if a value is a string with any non-whitespace characters.
*
* @private
* @param {string} str
* The string to check
*
* @return {boolean}
* Will be `true` if the string is non-blank, `false` otherwise.
*
*/
function isNonBlankString(str) {
// we use str.trim as it will trim any whitespace characters
// from the front or back of non-whitespace characters. aka
// Any string that contains non-whitespace characters will
// still contain them after `trim` but whitespace only strings
// will have a length of 0, failing this check.
return typeof str === 'string' && Boolean(str.trim());
}
/**
* Throws an error if the passed string has whitespace. This is used by
* class methods to be relatively consistent with the classList API.
*
* @private
* @param {string} str
* The string to check for whitespace.
*
* @throws {Error}
* Throws an error if there is whitespace in the string.
*/
function throwIfWhitespace(str) {
// str.indexOf instead of regex because str.indexOf is faster performance wise.
if (str.indexOf(' ') >= 0) {
throw new Error('class has illegal whitespace characters');
}
}
/**
* Whether the current DOM interface appears to be real (i.e. not simulated).
*
* @return {boolean}
* Will be `true` if the DOM appears to be real, `false` otherwise.
*/
function isReal() {
// Both document and window will never be undefined thanks to `global`.
return document === window.document;
}
/**
* Determines, via duck typing, whether or not a value is a DOM element.
*
* @param {*} value
* The value to check.
*
* @return {boolean}
* Will be `true` if the value is a DOM element, `false` otherwise.
*/
function isEl(value) {
return isObject$1(value) && value.nodeType === 1;
}
/**
* Determines if the current DOM is embedded in an iframe.
*
* @return {boolean}
* Will be `true` if the DOM is embedded in an iframe, `false`
* otherwise.
*/
function isInFrame() {
// We need a try/catch here because Safari will throw errors when attempting
// to get either `parent` or `self`
try {
return window.parent !== window.self;
} catch (x) {
return true;
}
}
/**
* Creates functions to query the DOM using a given method.
*
* @private
* @param {string} method
* The method to create the query with.
*
* @return {Function}
* The query method
*/
function createQuerier(method) {
return function (selector, context) {
if (!isNonBlankString(selector)) {
return document[method](null);
}
if (isNonBlankString(context)) {
context = document.querySelector(context);
}
const ctx = isEl(context) ? context : document;
return ctx[method] && ctx[method](selector);
};
}
/**
* Creates an element and applies properties, attributes, and inserts content.
*
* @param {string} [tagName='div']
* Name of tag to be created.
*
* @param {Object} [properties={}]
* Element properties to be applied.
*
* @param {Object} [attributes={}]
* Element attributes to be applied.
*
* @param {ContentDescriptor} [content]
* A content descriptor object.
*
* @return {Element}
* The element that was created.
*/
function createEl(tagName = 'div', properties = {}, attributes = {}, content) {
const el = document.createElement(tagName);
Object.getOwnPropertyNames(properties).forEach(function (propName) {
const val = properties[propName];
// Handle textContent since it's not supported everywhere and we have a
// method for it.
if (propName === 'textContent') {
textContent(el, val);
} else if (el[propName] !== val || propName === 'tabIndex') {
el[propName] = val;
}
});
Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
el.setAttribute(attrName, attributes[attrName]);
});
if (content) {
appendContent(el, content);
}
return el;
}
/**
* Injects text into an element, replacing any existing contents entirely.
*
* @param {HTMLElement} el
* The element to add text content into
*
* @param {string} text
* The text content to add.
*
* @return {Element}
* The element with added text content.
*/
function textContent(el, text) {
if (typeof el.textContent === 'undefined') {
el.innerText = text;
} else {
el.textContent = text;
}
return el;
}
/**
* Insert an element as the first child node of another
*
* @param {Element} child
* Element to insert
*
* @param {Element} parent
* Element to insert child into
*/
function prependTo(child, parent) {
if (parent.firstChild) {
parent.insertBefore(child, parent.firstChild);
} else {
parent.appendChild(child);
}
}
/**
* Check if an element has a class name.
*
* @param {Element} element
* Element to check
*
* @param {string} classToCheck
* Class name to check for
*
* @return {boolean}
* Will be `true` if the element has a class, `false` otherwise.
*
* @throws {Error}
* Throws an error if `classToCheck` has white space.
*/
function hasClass(element, classToCheck) {
throwIfWhitespace(classToCheck);
return element.classList.contains(classToCheck);
}
/**
* Add a class name to an element.
*
* @param {Element} element
* Element to add class name to.
*
* @param {...string} classesToAdd
* One or more class name to add.
*
* @return {Element}
* The DOM element with the added class name.
*/
function addClass(element, ...classesToAdd) {
element.classList.add(...classesToAdd.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
return element;
}
/**
* Remove a class name from an element.
*
* @param {Element} element
* Element to remove a class name from.
*
* @param {...string} classesToRemove
* One or more class name to remove.
*
* @return {Element}
* The DOM element with class name removed.
*/
function removeClass(element, ...classesToRemove) {
// Protect in case the player gets disposed
if (!element) {
log$1.warn("removeClass was called with an element that doesn't exist");
return null;
}
element.classList.remove(...classesToRemove.reduce((prev, current) => prev.concat(current.split(/\s+/)), []));
return element;
}
/**
* The callback definition for toggleClass.
*
* @callback PredicateCallback
* @param {Element} element
* The DOM element of the Component.
*
* @param {string} classToToggle
* The `className` that wants to be toggled
*
* @return {boolean|undefined}
* If `true` is returned, the `classToToggle` will be added to the
* `element`, but not removed. If `false`, the `classToToggle` will be removed from
* the `element`, but not added. If `undefined`, the callback will be ignored.
*
*/
/**
* Adds or removes a class name to/from an element depending on an optional
* condition or the presence/absence of the class name.
*
* @param {Element} element
* The element to toggle a class name on.
*
* @param {string} classToToggle
* The class that should be toggled.
*
* @param {boolean|PredicateCallback} [predicate]
* See the return value for {@link module:dom~PredicateCallback}
*
* @return {Element}
* The element with a class that has been toggled.
*/
function toggleClass(element, classToToggle, predicate) {
if (typeof predicate === 'function') {
predicate = predicate(element, classToToggle);
}
if (typeof predicate !== 'boolean') {
predicate = undefined;
}
classToToggle.split(/\s+/).forEach(className => element.classList.toggle(className, predicate));
return element;
}
/**
* Apply attributes to an HTML element.
*
* @param {Element} el
* Element to add attributes to.
*
* @param {Object} [attributes]
* Attributes to be applied.
*/
function setAttributes(el, attributes) {
Object.getOwnPropertyNames(attributes).forEach(function (attrName) {
const attrValue = attributes[attrName];
if (attrValue === null || typeof attrValue === 'undefined' || attrValue === false) {
el.removeAttribute(attrName);
} else {
el.setAttribute(attrName, attrValue === true ? '' : attrValue);
}
});
}
/**
* Get an element's attribute values, as defined on the HTML tag.
*
* Attributes are not the same as properties. They're defined on the tag
* or with setAttribute.
*
* @param {Element} tag
* Element from which to get tag attributes.
*
* @return {Object}
* All attributes of the element. Boolean attributes will be `true` or
* `false`, others will be strings.
*/
function getAttributes(tag) {
const obj = {};
// known boolean attributes
// we can check for matching boolean properties, but not all browsers
// and not all tags know about these attributes, so, we still want to check them manually
const knownBooleans = ['autoplay', 'controls', 'playsinline', 'loop', 'muted', 'default', 'defaultMuted'];
if (tag && tag.attributes && tag.attributes.length > 0) {
const attrs = tag.attributes;
for (let i = attrs.length - 1; i >= 0; i--) {
const attrName = attrs[i].name;
/** @type {boolean|string} */
let attrVal = attrs[i].value;
// check for known booleans
// the matching element property will return a value for typeof
if (knownBooleans.includes(attrName)) {
// the value of an included boolean attribute is typically an empty
// string ('') which would equal false if we just check for a false value.
// we also don't want support bad code like autoplay='false'
attrVal = attrVal !== null ? true : false;
}
obj[attrName] = attrVal;
}
}
return obj;
}
/**
* Get the value of an element's attribute.
*
* @param {Element} el
* A DOM element.
*
* @param {string} attribute
* Attribute to get the value of.
*
* @return {string}
* The value of the attribute.
*/
function getAttribute(el, attribute) {
return el.getAttribute(attribute);
}
/**
* Set the value of an element's attribute.
*
* @param {Element} el
* A DOM element.
*
* @param {string} attribute
* Attribute to set.
*
* @param {string} value
* Value to set the attribute to.
*/
function setAttribute(el, attribute, value) {
el.setAttribute(attribute, value);
}
/**
* Remove an element's attribute.
*
* @param {Element} el
* A DOM element.
*
* @param {string} attribute
* Attribute to remove.
*/
function removeAttribute(el, attribute) {
el.removeAttribute(attribute);
}
/**
* Attempt to block the ability to select text.
*/
function blockTextSelection() {
document.body.focus();
document.onselectstart = function () {
return false;
};
}
/**
* Turn off text selection blocking.
*/
function unblockTextSelection() {
document.onselectstart = function () {
return true;
};
}
/**
* Identical to the native `getBoundingClientRect` function, but ensures that
* the method is supported at all (it is in all browsers we claim to support)
* and that the element is in the DOM before continuing.
*
* This wrapper function also shims properties which are not provided by some
* older browsers (namely, IE8).
*
* Additionally, some browsers do not support adding properties to a
* `ClientRect`/`DOMRect` object; so, we shallow-copy it with the standard
* properties (except `x` and `y` which are not widely supported). This helps
* avoid implementations where keys are non-enumerable.
*
* @param {Element} el
* Element whose `ClientRect` we want to calculate.
*
* @return {Object|undefined}
* Always returns a plain object - or `undefined` if it cannot.
*/
function getBoundingClientRect(el) {
if (el && el.getBoundingClientRect && el.parentNode) {
const rect = el.getBoundingClientRect();
const result = {};
['bottom', 'height', 'left', 'right', 'top', 'width'].forEach(k => {
if (rect[k] !== undefined) {
result[k] = rect[k];
}
});
if (!result.height) {
result.height = parseFloat(computedStyle(el, 'height'));
}
if (!result.width) {
result.width = parseFloat(computedStyle(el, 'width'));
}
return result;
}
}
/**
* Represents the position of a DOM element on the page.
*
* @typedef {Object} module:dom~Position
*
* @property {number} left
* Pixels to the left.
*
* @property {number} top
* Pixels from the top.
*/
/**
* Get the position of an element in the DOM.
*
* Uses `getBoundingClientRect` technique from John Resig.
*
* @see http://ejohn.org/blog/getboundingclientrect-is-awesome/
*
* @param {Element} el
* Element from which to get offset.
*
* @return {module:dom~Position}
* The position of the element that was passed in.
*/
function findPosition(el) {
if (!el || el && !el.offsetParent) {
return {
left: 0,
top: 0,
width: 0,
height: 0
};
}
const width = el.offsetWidth;
const height = el.offsetHeight;
let left = 0;
let top = 0;
while (el.offsetParent && el !== document[FullscreenApi.fullscreenElement]) {
left += el.offsetLeft;
top += el.offsetTop;
el = el.offsetParent;
}
return {
left,
top,
width,
height
};
}
/**
* Represents x and y coordinates for a DOM element or mouse pointer.
*
* @typedef {Object} module:dom~Coordinates
*
* @property {number} x
* x coordinate in pixels
*
* @property {number} y
* y coordinate in pixels
*/
/**
* Get the pointer position within an element.
*
* The base on the coordinates are the bottom left of the element.
*
* @param {Element} el
* Element on which to get the pointer position on.
*
* @param {Event} event
* Event object.
*
* @return {module:dom~Coordinates}
* A coordinates object corresponding to the mouse position.
*
*/
function getPointerPosition(el, event) {
const translated = {
x: 0,
y: 0
};
if (IS_IOS) {
let item = el;
while (item && item.nodeName.toLowerCase() !== 'html') {
const transform = computedStyle(item, 'transform');
if (/^matrix/.test(transform)) {
const values = transform.slice(7, -1).split(/,\s/).map(Number);
translated.x += values[4];
translated.y += values[5];
} else if (/^matrix3d/.test(transform)) {
const values = transform.slice(9, -1).split(/,\s/).map(Number);
translated.x += values[12];
translated.y += values[13];
}
if (item.assignedSlot && item.assignedSlot.parentElement && window.WebKitCSSMatrix) {
const transformValue = window.getComputedStyle(item.assignedSlot.parentElement).transform;
const matrix = new window.WebKitCSSMatrix(transformValue);
translated.x += matrix.m41;
translated.y += matrix.m42;
}
item = item.parentNode || item.host;
}
}
const position = {};
const boxTarget = findPosition(event.target);
const box = findPosition(el);
const boxW = box.width;
const boxH = box.height;
let offsetY = event.offsetY - (box.top - boxTarget.top);
let offsetX = event.offsetX - (box.left - boxTarget.left);
if (event.changedTouches) {
offsetX = event.changedTouches[0].pageX - box.left;
offsetY = event.changedTouches[0].pageY + box.top;
if (IS_IOS) {
offsetX -= translated.x;
offsetY -= translated.y;
}
}
position.y = 1 - Math.max(0, Math.min(1, offsetY / boxH));
position.x = Math.max(0, Math.min(1, offsetX / boxW));
return position;
}
/**
* Determines, via duck typing, whether or not a value is a text node.
*
* @param {*} value
* Check if this value is a text node.
*
* @return {boolean}
* Will be `true` if the value is a text node, `false` otherwise.
*/
function isTextNode$1(value) {
return isObject$1(value) && value.nodeType === 3;
}
/**
* Empties the contents of an element.
*
* @param {Element} el
* The element to empty children from
*
* @return {Element}
* The element with no children
*/
function emptyEl(el) {
while (el.firstChild) {
el.removeChild(el.firstChild);
}
return el;
}
/**
* This is a mixed value that describes content to be injected into the DOM
* via some method. It can be of the following types:
*
* Type | Description
* -----------|-------------
* `string` | The value will be normalized into a text node.
* `Element` | The value will be accepted as-is.
* `Text` | A TextNode. The value will be accepted as-is.
* `Array` | A one-dimensional array of strings, elements, text nodes, or functions. These functions should return a string, element, or text node (any other return value, like an array, will be ignored).
* `Function` | A function, which is expected to return a string, element, text node, or array - any of the other possible values described above. This means that a content descriptor could be a function that returns an array of functions, but those second-level functions must return strings, elements, or text nodes.
*
* @typedef {string|Element|Text|Array|Function} ContentDescriptor
*/
/**
* Normalizes content for eventual insertion into the DOM.
*
* This allows a wide range of content definition methods, but helps protect
* from falling into the trap of simply writing to `innerHTML`, which could
* be an XSS concern.
*
* The content for an element can be passed in multiple types and
* combinations, whose behavior is as follows:
*
* @param {ContentDescriptor} content
* A content descriptor value.
*
* @return {Array}
* All of the content that was passed in, normalized to an array of
* elements or text nodes.
*/
function normalizeContent(content) {
// First, invoke content if it is a function. If it produces an array,
// that needs to happen before normalization.
if (typeof content === 'function') {
content = content();
}
// Next up, normalize to an array, so one or many items can be normalized,
// filtered, and returned.
return (Array.isArray(content) ? content : [content]).map(value => {
// First, invoke value if it is a function to produce a new value,
// which will be subsequently normalized to a Node of some kind.
if (typeof value === 'function') {
value = value();
}
if (isEl(value) || isTextNode$1(value)) {
return value;
}
if (typeof value === 'string' && /\S/.test(value)) {
return document.createTextNode(value);
}
}).filter(value => value);
}
/**
* Normalizes and appends content to an element.
*
* @param {Element} el
* Element to append normalized content to.
*
* @param {ContentDescriptor} content
* A content descriptor value.
*
* @return {Element}
* The element with appended normalized content.
*/
function appendContent(el, content) {
normalizeContent(content).forEach(node => el.appendChild(node));
return el;
}
/**
* Normalizes and inserts content into an element; this is identical to
* `appendContent()`, except it empties the element first.
*
* @param {Element} el
* Element to insert normalized content into.
*
* @param {ContentDescriptor} content
* A content descriptor value.
*
* @return {Element}
* The element with inserted normalized content.
*/
function insertContent(el, content) {
return appendContent(emptyEl(el), content);
}
/**
* Check if an event was a single left click.
*
* @param {MouseEvent} event
* Event object.
*
* @return {boolean}
* Will be `true` if a single left click, `false` otherwise.
*/
function isSingleLeftClick(event) {
// Note: if you create something draggable, be sure to
// call it on both `mousedown` and `mousemove` event,
// otherwise `mousedown` should be enough for a button
if (event.button === undefined && event.buttons === undefined) {
// Why do we need `buttons` ?
// Because, middle mouse sometimes have this:
// e.button === 0 and e.buttons === 4
// Furthermore, we want to prevent combination click, something like
// HOLD middlemouse then left click, that would be
// e.button === 0, e.buttons === 5
// just `button` is not gonna work
// Alright, then what this block does ?
// this is for chrome `simulate mobile devices`
// I want to support this as well
return true;
}
if (event.button === 0 && event.buttons === undefined) {
// Touch screen, sometimes on some specific device, `buttons`
// doesn't have anything (safari on ios, blackberry...)
return true;
}
// `mouseup` event on a single left click has
// `button` and `buttons` equal to 0
if (event.type === 'mouseup' && event.button === 0 && event.buttons === 0) {
return true;
}
// MacOS Sonoma trackpad when "tap to click enabled"
if (event.type === 'mousedown' && event.button === 0 && event.buttons === 0) {
return true;
}
if (event.button !== 0 || event.buttons !== 1) {
// This is the reason we have those if else block above
// if any special case we can catch and let it slide
// we do it above, when get to here, this definitely
// is-not-left-click
return false;
}
return true;
}
/**
* Finds a single DOM element matching `selector` within the optional
* `context` of another DOM element (defaulting to `document`).
*
* @param {string} selector
* A valid CSS selector, which will be passed to `querySelector`.
*
* @param {Element|String} [context=document]
* A DOM element within which to query. Can also be a selector
* string in which case the first matching element will be used
* as context. If missing (or no element matches selector), falls
* back to `document`.
*
* @return {Element|null}
* The element that was found or null.
*/
const $ = createQuerier('querySelector');
/**
* Finds a all DOM elements matching `selector` within the optional
* `context` of another DOM element (defaulting to `document`).
*
* @param {string} selector
* A valid CSS selector, which will be passed to `querySelectorAll`.
*
* @param {Element|String} [context=document]
* A DOM element within which to query. Can also be a selector
* string in which case the first matching element will be used
* as context. If missing (or no element matches selector), falls
* back to `document`.
*
* @return {NodeList}
* A element list of elements that were found. Will be empty if none
* were found.
*
*/
const $$ = createQuerier('querySelectorAll');
/**
* A safe getComputedStyle.
*
* This is needed because in Firefox, if the player is loaded in an iframe with
* `display:none`, then `getComputedStyle` returns `null`, so, we do a
* null-check to make sure that the player doesn't break in these cases.
*
* @param {Element} el
* The element you want the computed style of
*
* @param {string} prop
* The property name you want
*
* @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
*/
function computedStyle(el, prop) {
if (!el || !prop) {
return '';
}
if (typeof window.getComputedStyle === 'function') {
let computedStyleValue;
try {
computedStyleValue = window.getComputedStyle(el);
} catch (e) {
return '';
}
return computedStyleValue ? computedStyleValue.getPropertyValue(prop) || computedStyleValue[prop] : '';
}
return '';
}
/**
* Copy document style sheets to another window.
*
* @param {Window} win
* The window element you want to copy the document style sheets to.
*
*/
function copyStyleSheetsToWindow(win) {
[...document.styleSheets].forEach(styleSheet => {
try {
const cssRules = [...styleSheet.cssRules].map(rule => rule.cssText).join('');
const style = document.createElement('style');
style.textContent = cssRules;
win.document.head.appendChild(style);
} catch (e) {
const link = document.createElement('link');
link.rel = 'stylesheet';
link.type = styleSheet.type;
// For older Safari this has to be the string; on other browsers setting the MediaList works
link.media = styleSheet.media.mediaText;
link.href = styleSheet.href;
win.document.head.appendChild(link);
}
});
}
var Dom = /*#__PURE__*/Object.freeze({
__proto__: null,
isReal: isReal,
isEl: isEl,
isInFrame: isInFrame,
createEl: createEl,
textContent: textContent,
prependTo: prependTo,
hasClass: hasClass,
addClass: addClass,
removeClass: removeClass,
toggleClass: toggleClass,
setAttributes: setAttributes,
getAttributes: getAttributes,
getAttribute: getAttribute,
setAttribute: setAttribute,
removeAttribute: removeAttribute,
blockTextSelection: blockTextSelection,
unblockTextSelection: unblockTextSelection,
getBoundingClientRect: getBoundingClientRect,
findPosition: findPosition,
getPointerPosition: getPointerPosition,
isTextNode: isTextNode$1,
emptyEl: emptyEl,
normalizeContent: normalizeContent,
appendContent: appendContent,
insertContent: insertContent,
isSingleLeftClick: isSingleLeftClick,
$: $,
$$: $$,
computedStyle: computedStyle,
copyStyleSheetsToWindow: copyStyleSheetsToWindow
});
/**
* @file setup.js - Functions for setting up a player without
* user interaction based on the data-setup `attribute` of the video tag.
*
* @module setup
*/
let _windowLoaded = false;
let videojs$1;
/**
* Set up any tags that have a data-setup `attribute` when the player is started.
*/
const autoSetup = function () {
if (videojs$1.options.autoSetup === false) {
return;
}
const vids = Array.prototype.slice.call(document.getElementsByTagName('video'));
const audios = Array.prototype.slice.call(document.getElementsByTagName('audio'));
const divs = Array.prototype.slice.call(document.getElementsByTagName('video-js'));
const mediaEls = vids.concat(audios, divs);
// Check if any media elements exist
if (mediaEls && mediaEls.length > 0) {
for (let i = 0, e = mediaEls.length; i < e; i++) {
const mediaEl = mediaEls[i];
// Check if element exists, has getAttribute func.
if (mediaEl && mediaEl.getAttribute) {
// Make sure this player hasn't already been set up.
if (mediaEl.player === undefined) {
const options = mediaEl.getAttribute('data-setup');
// Check if data-setup attr exists.
// We only auto-setup if they've added the data-setup attr.
if (options !== null) {
// Create new video.js instance.
videojs$1(mediaEl);
}
}
// If getAttribute isn't defined, we need to wait for the DOM.
} else {
autoSetupTimeout(1);
break;
}
}
// No videos were found, so keep looping unless page is finished loading.
} else if (!_windowLoaded) {
autoSetupTimeout(1);
}
};
/**
* Wait until the page is loaded before running autoSetup. This will be called in
* autoSetup if `hasLoaded` returns false.
*
* @param {number} wait
* How long to wait in ms
*
* @param {module:videojs} [vjs]
* The videojs library function
*/
function autoSetupTimeout(wait, vjs) {
// Protect against breakage in non-browser environments
if (!isReal()) {
return;
}
if (vjs) {
videojs$1 = vjs;
}
window.setTimeout(autoSetup, wait);
}
/**
* Used to set the internal tracking of window loaded state to true.
*
* @private
*/
function setWindowLoaded() {
_windowLoaded = true;
window.removeEventListener('load', setWindowLoaded);
}
if (isReal()) {
if (document.readyState === 'complete') {
setWindowLoaded();
} else {
/**
* Listen for the load event on window, and set _windowLoaded to true.
*
* We use a standard event listener here to avoid incrementing the GUID
* before any players are created.
*
* @listens load
*/
window.addEventListener('load', setWindowLoaded);
}
}
/**
* @file stylesheet.js
* @module stylesheet
*/
/**
* Create a DOM style element given a className for it.
*
* @param {string} className
* The className to add to the created style element.
*
* @return {Element}
* The element that was created.
*/
const createStyleElement = function (className) {
const style = document.createElement('style');
style.className = className;
return style;
};
/**
* Add text to a DOM element.
*
* @param {Element} el
* The Element to add text content to.
*
* @param {string} content
* The text to add to the element.
*/
const setTextContent = function (el, content) {
if (el.styleSheet) {
el.styleSheet.cssText = content;
} else {
el.textContent = content;
}
};
/**
* @file dom-data.js
* @module dom-data
*/
/**
* Element Data Store.
*
* Allows for binding data to an element without putting it directly on the
* element. Ex. Event listeners are stored here.
* (also from jsninja.com, slightly modified and updated for closure compiler)
*
* @type {Object}
* @private
*/
var DomData = new WeakMap();
/**
* @file guid.js
* @module guid
*/
// Default value for GUIDs. This allows us to reset the GUID counter in tests.
//
// The initial GUID is 3 because some users have come to rely on the first
// default player ID ending up as `vjs_video_3`.
//
// See: https://github.com/videojs/video.js/pull/6216
const _initialGuid = 3;
/**
* Unique ID for an element or function
*
* @type {Number}
*/
let _guid = _initialGuid;
/**
* Get a unique auto-incrementing ID by number that has not been returned before.
*
* @return {number}
* A new unique ID.
*/
function newGUID() {
return _guid++;
}
/**
* @file events.js. An Event System (John Resig - Secrets of a JS Ninja http://jsninja.com/)
* (Original book version wasn't completely usable, so fixed some things and made Closure Compiler compatible)
* This should work very similarly to jQuery's events, however it's based off the book version which isn't as
* robust as jquery's, so there's probably some differences.
*
* @file events.js
* @module events
*/
/**
* Clean up the listener cache and dispatchers
*
* @param {Element|Object} elem
* Element to clean up
*
* @param {string} type
* Type of event to clean up
*/
function _cleanUpEvents(elem, type) {
if (!DomData.has(elem)) {
return;
}
const data = DomData.get(elem);
// Remove the events of a particular type if there are none left
if (data.handlers[type].length === 0) {
delete data.handlers[type];
// data.handlers[type] = null;
// Setting to null was causing an error with data.handlers
// Remove the meta-handler from the element
if (elem.removeEventListener) {
elem.removeEventListener(type, data.dispatcher, false);
} else if (elem.detachEvent) {
elem.detachEvent('on' + type, data.dispatcher);
}
}
// Remove the events object if there are no types left
if (Object.getOwnPropertyNames(data.handlers).length <= 0) {
delete data.handlers;
delete data.dispatcher;
delete data.disabled;
}
// Finally remove the element data if there is no data left
if (Object.getOwnPropertyNames(data).length === 0) {
DomData.delete(elem);
}
}
/**
* Loops through an array of event types and calls the requested method for each type.
*
* @param {Function} fn
* The event method we want to use.
*
* @param {Element|Object} elem
* Element or object to bind listeners to
*
* @param {string[]} types
* Type of event to bind to.
*
* @param {Function} callback
* Event listener.
*/
function _handleMultipleEvents(fn, elem, types, callback) {
types.forEach(function (type) {
// Call the event method for each one of the types
fn(elem, type, callback);
});
}
/**
* Fix a native event to have standard property values
*
* @param {Object} event
* Event object to fix.
*
* @return {Object}
* Fixed event object.
*/
function fixEvent(event) {
if (event.fixed_) {
return event;
}
function returnTrue() {
return true;
}
function returnFalse() {
return false;
}
// Test if fixing up is needed
// Used to check if !event.stopPropagation instead of isPropagationStopped
// But native events return true for stopPropagation, but don't have
// other expected methods like isPropagationStopped. Seems to be a problem
// with the Javascript Ninja code. So we're just overriding all events now.
if (!event || !event.isPropagationStopped || !event.isImmediatePropagationStopped) {
const old = event || window.event;
event = {};
// Clone the old object so that we can modify the values event = {};
// IE8 Doesn't like when you mess with native event properties
// Firefox returns false for event.hasOwnProperty('type') and other props
// which makes copying more difficult.
// TODO: Probably best to create an allowlist of event props
const deprecatedProps = ['layerX', 'layerY', 'keyLocation', 'path', 'webkitMovementX', 'webkitMovementY', 'mozPressure', 'mozInputSource'];
for (const key in old) {
// Safari 6.0.3 warns you if you try to copy deprecated layerX/Y
// Chrome warns you if you try to copy deprecated keyboardEvent.keyLocation
// and webkitMovementX/Y
// Lighthouse complains if Event.path is copied
if (!deprecatedProps.includes(key)) {
// Chrome 32+ warns if you try to copy deprecated returnValue, but
// we still want to if preventDefault isn't supported (IE8).
if (!(key === 'returnValue' && old.preventDefault)) {
event[key] = old[key];
}
}
}
// The event occurred on this element
if (!event.target) {
event.target = event.srcElement || document;
}
// Handle which other element the event is related to
if (!event.relatedTarget) {
event.relatedTarget = event.fromElement === event.target ? event.toElement : event.fromElement;
}
// Stop the default browser action
event.preventDefault = function () {
if (old.preventDefault) {
old.preventDefault();
}
event.returnValue = false;
old.returnValue = false;
event.defaultPrevented = true;
};
event.defaultPrevented = false;
// Stop the event from bubbling
event.stopPropagation = function () {
if (old.stopPropagation) {
old.stopPropagation();
}
event.cancelBubble = true;
old.cancelBubble = true;
event.isPropagationStopped = returnTrue;
};
event.isPropagationStopped = returnFalse;
// Stop the event from bubbling and executing other handlers
event.stopImmediatePropagation = function () {
if (old.stopImmediatePropagation) {
old.stopImmediatePropagation();
}
event.isImmediatePropagationStopped = returnTrue;
event.stopPropagation();
};
event.isImmediatePropagationStopped = returnFalse;
// Handle mouse position
if (event.clientX !== null && event.clientX !== undefined) {
const doc = document.documentElement;
const body = document.body;
event.pageX = event.clientX + (doc && doc.scrollLeft || body && body.scrollLeft || 0) - (doc && doc.clientLeft || body && body.clientLeft || 0);
event.pageY = event.clientY + (doc && doc.scrollTop || body && body.scrollTop || 0) - (doc && doc.clientTop || body && body.clientTop || 0);
}
// Handle key presses
event.which = event.charCode || event.keyCode;
// Fix button for mouse clicks:
// 0 == left; 1 == middle; 2 == right
if (event.button !== null && event.button !== undefined) {
// The following is disabled because it does not pass videojs-standard
// and... yikes.
/* eslint-disable */
event.button = event.button & 1 ? 0 : event.button & 4 ? 1 : event.button & 2 ? 2 : 0;
/* eslint-enable */
}
}
event.fixed_ = true;
// Returns fixed-up instance
return event;
}
/**
* Whether passive event listeners are supported
*/
let _supportsPassive;
const supportsPassive = function () {
if (typeof _supportsPassive !== 'boolean') {
_supportsPassive = false;
try {
const opts = Object.defineProperty({}, 'passive', {
get() {
_supportsPassive = true;
}
});
window.addEventListener('test', null, opts);
window.removeEventListener('test', null, opts);
} catch (e) {
// disregard
}
}
return _supportsPassive;
};
/**
* Touch events Chrome expects to be passive
*/
const passiveEvents = ['touchstart', 'touchmove'];
/**
* Add an event listener to element
* It stores the handler function in a separate cache object
* and adds a generic handler to the element's event,
* along with a unique id (guid) to the element.
*
* @param {Element|Object} elem
* Element or object to bind listeners to
*
* @param {string|string[]} type
* Type of event to bind to.
*
* @param {Function} fn
* Event listener.
*/
function on(elem, type, fn) {
if (Array.isArray(type)) {
return _handleMultipleEvents(on, elem, type, fn);
}
if (!DomData.has(elem)) {
DomData.set(elem, {});
}
const data = DomData.get(elem);
// We need a place to store all our handler data
if (!data.handlers) {
data.handlers = {};
}
if (!data.handlers[type]) {
data.handlers[type] = [];
}
if (!fn.guid) {
fn.guid = newGUID();
}
data.handlers[type].push(fn);
if (!data.dispatcher) {
data.disabled = false;
data.dispatcher = function (event, hash) {
if (data.disabled) {
return;
}
event = fixEvent(event);
const handlers = data.handlers[event.type];
if (handlers) {
// Copy handlers so if handlers are added/removed during the process it doesn't throw everything off.
const handlersCopy = handlers.slice(0);
for (let m = 0, n = handlersCopy.length; m < n; m++) {
if (event.isImmediatePropagationStopped()) {
break;
} else {
try {
handlersCopy[m].call(elem, event, hash);
} catch (e) {
log$1.error(e);
}
}
}
}
};
}
if (data.handlers[type].length === 1) {
if (elem.addEventListener) {
let options = false;
if (supportsPassive() && passiveEvents.indexOf(type) > -1) {
options = {
passive: true
};
}
elem.addEventListener(type, data.dispatcher, options);
} else if (elem.attachEvent) {
elem.attachEvent('on' + type, data.dispatcher);
}
}
}
/**
* Removes event listeners from an element
*
* @param {Element|Object} elem
* Object to remove listeners from.
*
* @param {string|string[]} [type]
* Type of listener to remove. Don't include to remove all events from element.
*
* @param {Function} [fn]
* Specific listener to remove. Don't include to remove listeners for an event
* type.
*/
function off(elem, type, fn) {
// Don't want to add a cache object through getElData if not needed
if (!DomData.has(elem)) {
return;
}
const data = DomData.get(elem);
// If no events exist, nothing to unbind
if (!data.handlers) {
return;
}
if (Array.isArray(type)) {
return _handleMultipleEvents(off, elem, type, fn);
}
// Utility function
const removeType = function (el, t) {
data.handlers[t] = [];
_cleanUpEvents(el, t);
};
// Are we removing all bound events?
if (type === undefined) {
for (const t in data.handlers) {
if (Object.prototype.hasOwnProperty.call(data.handlers || {}, t)) {
removeType(elem, t);
}
}
return;
}
const handlers = data.handlers[type];
// If no handlers exist, nothing to unbind
if (!handlers) {
return;
}
// If no listener was provided, remove all listeners for type
if (!fn) {
removeType(elem, type);
return;
}
// We're only removing a single handler
if (fn.guid) {
for (let n = 0; n < handlers.length; n++) {
if (handlers[n].guid === fn.guid) {
handlers.splice(n--, 1);
}
}
}
_cleanUpEvents(elem, type);
}
/**
* Trigger an event for an element
*
* @param {Element|Object} elem
* Element to trigger an event on
*
* @param {EventTarget~Event|string} event
* A string (the type) or an event object with a type attribute
*
* @param {Object} [hash]
* data hash to pass along with the event
*
* @return {boolean|undefined}
* Returns the opposite of `defaultPrevented` if default was
* prevented. Otherwise, returns `undefined`
*/
function trigger(elem, event, hash) {
// Fetches element data and a reference to the parent (for bubbling).
// Don't want to add a data object to cache for every parent,
// so checking hasElData first.
const elemData = DomData.has(elem) ? DomData.get(elem) : {};
const parent = elem.parentNode || elem.ownerDocument;
// type = event.type || event,
// handler;
// If an event name was passed as a string, creates an event out of it
if (typeof event === 'string') {
event = {
type: event,
target: elem
};
} else if (!event.target) {
event.target = elem;
}
// Normalizes the event properties.
event = fixEvent(event);
// If the passed element has a dispatcher, executes the established handlers.
if (elemData.dispatcher) {
elemData.dispatcher.call(elem, event, hash);
}
// Unless explicitly stopped or the event does not bubble (e.g. media events)
// recursively calls this function to bubble the event up the DOM.
if (parent && !event.isPropagationStopped() && event.bubbles === true) {
trigger.call(null, parent, event, hash);
// If at the top of the DOM, triggers the default action unless disabled.
} else if (!parent && !event.defaultPrevented && event.target && event.target[event.type]) {
if (!DomData.has(event.target)) {
DomData.set(event.target, {});
}
const targetData = DomData.get(event.target);
// Checks if the target has a default action for this event.
if (event.target[event.type]) {
// Temporarily disables event dispatching on the target as we have already executed the handler.
targetData.disabled = true;
// Executes the default action.
if (typeof event.target[event.type] === 'function') {
event.target[event.type]();
}
// Re-enables event dispatching.
targetData.disabled = false;
}
}
// Inform the triggerer if the default was prevented by returning false
return !event.defaultPrevented;
}
/**
* Trigger a listener only once for an event.
*
* @param {Element|Object} elem
* Element or object to bind to.
*
* @param {string|string[]} type
* Name/type of event
*
* @param {Event~EventListener} fn
* Event listener function
*/
function one(elem, type, fn) {
if (Array.isArray(type)) {
return _handleMultipleEvents(one, elem, type, fn);
}
const func = function () {
off(elem, type, func);
fn.apply(this, arguments);
};
// copy the guid to the new function so it can removed using the original function's ID
func.guid = fn.guid = fn.guid || newGUID();
on(elem, type, func);
}
/**
* Trigger a listener only once and then turn if off for all
* configured events
*
* @param {Element|Object} elem
* Element or object to bind to.
*
* @param {string|string[]} type
* Name/type of event
*
* @param {Event~EventListener} fn
* Event listener function
*/
function any(elem, type, fn) {
const func = function () {
off(elem, type, func);
fn.apply(this, arguments);
};
// copy the guid to the new function so it can removed using the original function's ID
func.guid = fn.guid = fn.guid || newGUID();
// multiple ons, but one off for everything
on(elem, type, func);
}
var Events = /*#__PURE__*/Object.freeze({
__proto__: null,
fixEvent: fixEvent,
on: on,
off: off,
trigger: trigger,
one: one,
any: any
});
/**
* @file fn.js
* @module fn
*/
const UPDATE_REFRESH_INTERVAL = 30;
/**
* A private, internal-only function for changing the context of a function.
*
* It also stores a unique id on the function so it can be easily removed from
* events.
*
* @private
* @function
* @param {*} context
* The object to bind as scope.
*
* @param {Function} fn
* The function to be bound to a scope.
*
* @param {number} [uid]
* An optional unique ID for the function to be set
*
* @return {Function}
* The new function that will be bound into the context given
*/
const bind_ = function (context, fn, uid) {
// Make sure the function has a unique ID
if (!fn.guid) {
fn.guid = newGUID();
}
// Create the new function that changes the context
const bound = fn.bind(context);
// Allow for the ability to individualize this function
// Needed in the case where multiple objects might share the same prototype
// IF both items add an event listener with the same function, then you try to remove just one
// it will remove both because they both have the same guid.
// when using this, you need to use the bind method when you remove the listener as well.
// currently used in text tracks
bound.guid = uid ? uid + '_' + fn.guid : fn.guid;
return bound;
};
/**
* Wraps the given function, `fn`, with a new function that only invokes `fn`
* at most once per every `wait` milliseconds.
*
* @function
* @param {Function} fn
* The function to be throttled.
*
* @param {number} wait
* The number of milliseconds by which to throttle.
*
* @return {Function}
*/
const throttle = function (fn, wait) {
let last = window.performance.now();
const throttled = function (...args) {
const now = window.performance.now();
if (now - last >= wait) {
fn(...args);
last = now;
}
};
return throttled;
};
/**
* Creates a debounced function that delays invoking `func` until after `wait`
* milliseconds have elapsed since the last time the debounced function was
* invoked.
*
* Inspired by lodash and underscore implementations.
*
* @function
* @param {Function} func
* The function to wrap with debounce behavior.
*
* @param {number} wait
* The number of milliseconds to wait after the last invocation.
*
* @param {boolean} [immediate]
* Whether or not to invoke the function immediately upon creation.
*
* @param {Object} [context=window]
* The "context" in which the debounced function should debounce. For
* example, if this function should be tied to a Video.js player,
* the player can be passed here. Alternatively, defaults to the
* global `window` object.
*
* @return {Function}
* A debounced function.
*/
const debounce = function (func, wait, immediate, context = window) {
let timeout;
const cancel = () => {
context.clearTimeout(timeout);
timeout = null;
};
/* eslint-disable consistent-this */
const debounced = function () {
const self = this;
const args = arguments;
let later = function () {
timeout = null;
later = null;
if (!immediate) {
func.apply(self, args);
}
};
if (!timeout && immediate) {
func.apply(self, args);
}
context.clearTimeout(timeout);
timeout = context.setTimeout(later, wait);
};
/* eslint-enable consistent-this */
debounced.cancel = cancel;
return debounced;
};
var Fn = /*#__PURE__*/Object.freeze({
__proto__: null,
UPDATE_REFRESH_INTERVAL: UPDATE_REFRESH_INTERVAL,
bind_: bind_,
throttle: throttle,
debounce: debounce
});
/**
* @file src/js/event-target.js
*/
let EVENT_MAP;
/**
* `EventTarget` is a class that can have the same API as the DOM `EventTarget`. It
* adds shorthand functions that wrap around lengthy functions. For example:
* the `on` function is a wrapper around `addEventListener`.
*
* @see [EventTarget Spec]{@link https://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-EventTarget}
* @class EventTarget
*/
class EventTarget$2 {
/**
* Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
* function that will get called when an event with a certain name gets triggered.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to call with `EventTarget`s
*/
on(type, fn) {
// Remove the addEventListener alias before calling Events.on
// so we don't get into an infinite type loop
const ael = this.addEventListener;
this.addEventListener = () => {};
on(this, type, fn);
this.addEventListener = ael;
}
/**
* Removes an `event listener` for a specific event from an instance of `EventTarget`.
* This makes it so that the `event listener` will no longer get called when the
* named event happens.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to remove.
*/
off(type, fn) {
off(this, type, fn);
}
/**
* This function will add an `event listener` that gets triggered only once. After the
* first trigger it will get removed. This is like adding an `event listener`
* with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to be called once for each event name.
*/
one(type, fn) {
// Remove the addEventListener aliasing Events.on
// so we don't get into an infinite type loop
const ael = this.addEventListener;
this.addEventListener = () => {};
one(this, type, fn);
this.addEventListener = ael;
}
/**
* This function will add an `event listener` that gets triggered only once and is
* removed from all events. This is like adding an array of `event listener`s
* with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
* first time it is triggered.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to be called once for each event name.
*/
any(type, fn) {
// Remove the addEventListener aliasing Events.on
// so we don't get into an infinite type loop
const ael = this.addEventListener;
this.addEventListener = () => {};
any(this, type, fn);
this.addEventListener = ael;
}
/**
* This function causes an event to happen. This will then cause any `event listeners`
* that are waiting for that event, to get called. If there are no `event listeners`
* for an event then nothing will happen.
*
* If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
* Trigger will also call the `on` + `uppercaseEventName` function.
*
* Example:
* 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
* `onClick` if it exists.
*
* @param {string|EventTarget~Event|Object} event
* The name of the event, an `Event`, or an object with a key of type set to
* an event name.
*/
trigger(event) {
const type = event.type || event;
// deprecation
// In a future version we should default target to `this`
// similar to how we default the target to `elem` in
// `Events.trigger`. Right now the default `target` will be
// `document` due to the `Event.fixEvent` call.
if (typeof event === 'string') {
event = {
type
};
}
event = fixEvent(event);
if (this.allowedEvents_[type] && this['on' + type]) {
this['on' + type](event);
}
trigger(this, event);
}
queueTrigger(event) {
// only set up EVENT_MAP if it'll be used
if (!EVENT_MAP) {
EVENT_MAP = new Map();
}
const type = event.type || event;
let map = EVENT_MAP.get(this);
if (!map) {
map = new Map();
EVENT_MAP.set(this, map);
}
const oldTimeout = map.get(type);
map.delete(type);
window.clearTimeout(oldTimeout);
const timeout = window.setTimeout(() => {
map.delete(type);
// if we cleared out all timeouts for the current target, delete its map
if (map.size === 0) {
map = null;
EVENT_MAP.delete(this);
}
this.trigger(event);
}, 0);
map.set(type, timeout);
}
}
/**
* A Custom DOM event.
*
* @typedef {CustomEvent} Event
* @see [Properties]{@link https://developer.mozilla.org/en-US/docs/Web/API/CustomEvent}
*/
/**
* All event listeners should follow the following format.
*
* @callback EventListener
* @this {EventTarget}
*
* @param {Event} event
* the event that triggered this function
*
* @param {Object} [hash]
* hash of data sent during the event
*/
/**
* An object containing event names as keys and booleans as values.
*
* > NOTE: If an event name is set to a true value here {@link EventTarget#trigger}
* will have extra functionality. See that function for more information.
*
* @property EventTarget.prototype.allowedEvents_
* @protected
*/
EventTarget$2.prototype.allowedEvents_ = {};
/**
* An alias of {@link EventTarget#on}. Allows `EventTarget` to mimic
* the standard DOM API.
*
* @function
* @see {@link EventTarget#on}
*/
EventTarget$2.prototype.addEventListener = EventTarget$2.prototype.on;
/**
* An alias of {@link EventTarget#off}. Allows `EventTarget` to mimic
* the standard DOM API.
*
* @function
* @see {@link EventTarget#off}
*/
EventTarget$2.prototype.removeEventListener = EventTarget$2.prototype.off;
/**
* An alias of {@link EventTarget#trigger}. Allows `EventTarget` to mimic
* the standard DOM API.
*
* @function
* @see {@link EventTarget#trigger}
*/
EventTarget$2.prototype.dispatchEvent = EventTarget$2.prototype.trigger;
/**
* @file mixins/evented.js
* @module evented
*/
const objName = obj => {
if (typeof obj.name === 'function') {
return obj.name();
}
if (typeof obj.name === 'string') {
return obj.name;
}
if (obj.name_) {
return obj.name_;
}
if (obj.constructor && obj.constructor.name) {
return obj.constructor.name;
}
return typeof obj;
};
/**
* Returns whether or not an object has had the evented mixin applied.
*
* @param {Object} object
* An object to test.
*
* @return {boolean}
* Whether or not the object appears to be evented.
*/
const isEvented = object => object instanceof EventTarget$2 || !!object.eventBusEl_ && ['on', 'one', 'off', 'trigger'].every(k => typeof object[k] === 'function');
/**
* Adds a callback to run after the evented mixin applied.
*
* @param {Object} target
* An object to Add
* @param {Function} callback
* The callback to run.
*/
const addEventedCallback = (target, callback) => {
if (isEvented(target)) {
callback();
} else {
if (!target.eventedCallbacks) {
target.eventedCallbacks = [];
}
target.eventedCallbacks.push(callback);
}
};
/**
* Whether a value is a valid event type - non-empty string or array.
*
* @private
* @param {string|Array} type
* The type value to test.
*
* @return {boolean}
* Whether or not the type is a valid event type.
*/
const isValidEventType = type =>
// The regex here verifies that the `type` contains at least one non-
// whitespace character.
typeof type === 'string' && /\S/.test(type) || Array.isArray(type) && !!type.length;
/**
* Validates a value to determine if it is a valid event target. Throws if not.
*
* @private
* @throws {Error}
* If the target does not appear to be a valid event target.
*
* @param {Object} target
* The object to test.
*
* @param {Object} obj
* The evented object we are validating for
*
* @param {string} fnName
* The name of the evented mixin function that called this.
*/
const validateTarget = (target, obj, fnName) => {
if (!target || !target.nodeName && !isEvented(target)) {
throw new Error(`Invalid target for ${objName(obj)}#${fnName}; must be a DOM node or evented object.`);
}
};
/**
* Validates a value to determine if it is a valid event target. Throws if not.
*
* @private
* @throws {Error}
* If the type does not appear to be a valid event type.
*
* @param {string|Array} type
* The type to test.
*
* @param {Object} obj
* The evented object we are validating for
*
* @param {string} fnName
* The name of the evented mixin function that called this.
*/
const validateEventType = (type, obj, fnName) => {
if (!isValidEventType(type)) {
throw new Error(`Invalid event type for ${objName(obj)}#${fnName}; must be a non-empty string or array.`);
}
};
/**
* Validates a value to determine if it is a valid listener. Throws if not.
*
* @private
* @throws {Error}
* If the listener is not a function.
*
* @param {Function} listener
* The listener to test.
*
* @param {Object} obj
* The evented object we are validating for
*
* @param {string} fnName
* The name of the evented mixin function that called this.
*/
const validateListener = (listener, obj, fnName) => {
if (typeof listener !== 'function') {
throw new Error(`Invalid listener for ${objName(obj)}#${fnName}; must be a function.`);
}
};
/**
* Takes an array of arguments given to `on()` or `one()`, validates them, and
* normalizes them into an object.
*
* @private
* @param {Object} self
* The evented object on which `on()` or `one()` was called. This
* object will be bound as the `this` value for the listener.
*
* @param {Array} args
* An array of arguments passed to `on()` or `one()`.
*
* @param {string} fnName
* The name of the evented mixin function that called this.
*
* @return {Object}
* An object containing useful values for `on()` or `one()` calls.
*/
const normalizeListenArgs = (self, args, fnName) => {
// If the number of arguments is less than 3, the target is always the
// evented object itself.
const isTargetingSelf = args.length < 3 || args[0] === self || args[0] === self.eventBusEl_;
let target;
let type;
let listener;
if (isTargetingSelf) {
target = self.eventBusEl_;
// Deal with cases where we got 3 arguments, but we are still listening to
// the evented object itself.
if (args.length >= 3) {
args.shift();
}
[type, listener] = args;
} else {
// This was `[target, type, listener] = args;` but this block needs more than
// one statement to produce minified output compatible with Chrome 53.
// See https://github.com/videojs/video.js/pull/8810
target = args[0];
type = args[1];
listener = args[2];
}
validateTarget(target, self, fnName);
validateEventType(type, self, fnName);
validateListener(listener, self, fnName);
listener = bind_(self, listener);
return {
isTargetingSelf,
target,
type,
listener
};
};
/**
* Adds the listener to the event type(s) on the target, normalizing for
* the type of target.
*
* @private
* @param {Element|Object} target
* A DOM node or evented object.
*
* @param {string} method
* The event binding method to use ("on" or "one").
*
* @param {string|Array} type
* One or more event type(s).
*
* @param {Function} listener
* A listener function.
*/
const listen = (target, method, type, listener) => {
validateTarget(target, target, method);
if (target.nodeName) {
Events[method](target, type, listener);
} else {
target[method](type, listener);
}
};
/**
* Contains methods that provide event capabilities to an object which is passed
* to {@link module:evented|evented}.
*
* @mixin EventedMixin
*/
const EventedMixin = {
/**
* Add a listener to an event (or events) on this object or another evented
* object.
*
* @param {string|Array|Element|Object} targetOrType
* If this is a string or array, it represents the event type(s)
* that will trigger the listener.
*
* Another evented object can be passed here instead, which will
* cause the listener to listen for events on _that_ object.
*
* In either case, the listener's `this` value will be bound to
* this object.
*
* @param {string|Array|Function} typeOrListener
* If the first argument was a string or array, this should be the
* listener function. Otherwise, this is a string or array of event
* type(s).
*
* @param {Function} [listener]
* If the first argument was another evented object, this will be
* the listener function.
*/
on(...args) {
const {
isTargetingSelf,
target,
type,
listener
} = normalizeListenArgs(this, args, 'on');
listen(target, 'on', type, listener);
// If this object is listening to another evented object.
if (!isTargetingSelf) {
// If this object is disposed, remove the listener.
const removeListenerOnDispose = () => this.off(target, type, listener);
// Use the same function ID as the listener so we can remove it later it
// using the ID of the original listener.
removeListenerOnDispose.guid = listener.guid;
// Add a listener to the target's dispose event as well. This ensures
// that if the target is disposed BEFORE this object, we remove the
// removal listener that was just added. Otherwise, we create a memory leak.
const removeRemoverOnTargetDispose = () => this.off('dispose', removeListenerOnDispose);
// Use the same function ID as the listener so we can remove it later
// it using the ID of the original listener.
removeRemoverOnTargetDispose.guid = listener.guid;
listen(this, 'on', 'dispose', removeListenerOnDispose);
listen(target, 'on', 'dispose', removeRemoverOnTargetDispose);
}
},
/**
* Add a listener to an event (or events) on this object or another evented
* object. The listener will be called once per event and then removed.
*
* @param {string|Array|Element|Object} targetOrType
* If this is a string or array, it represents the event type(s)
* that will trigger the listener.
*
* Another evented object can be passed here instead, which will
* cause the listener to listen for events on _that_ object.
*
* In either case, the listener's `this` value will be bound to
* this object.
*
* @param {string|Array|Function} typeOrListener
* If the first argument was a string or array, this should be the
* listener function. Otherwise, this is a string or array of event
* type(s).
*
* @param {Function} [listener]
* If the first argument was another evented object, this will be
* the listener function.
*/
one(...args) {
const {
isTargetingSelf,
target,
type,
listener
} = normalizeListenArgs(this, args, 'one');
// Targeting this evented object.
if (isTargetingSelf) {
listen(target, 'one', type, listener);
// Targeting another evented object.
} else {
// TODO: This wrapper is incorrect! It should only
// remove the wrapper for the event type that called it.
// Instead all listeners are removed on the first trigger!
// see https://github.com/videojs/video.js/issues/5962
const wrapper = (...largs) => {
this.off(target, type, wrapper);
listener.apply(null, largs);
};
// Use the same function ID as the listener so we can remove it later
// it using the ID of the original listener.
wrapper.guid = listener.guid;
listen(target, 'one', type, wrapper);
}
},
/**
* Add a listener to an event (or events) on this object or another evented
* object. The listener will only be called once for the first event that is triggered
* then removed.
*
* @param {string|Array|Element|Object} targetOrType
* If this is a string or array, it represents the event type(s)
* that will trigger the listener.
*
* Another evented object can be passed here instead, which will
* cause the listener to listen for events on _that_ object.
*
* In either case, the listener's `this` value will be bound to
* this object.
*
* @param {string|Array|Function} typeOrListener
* If the first argument was a string or array, this should be the
* listener function. Otherwise, this is a string or array of event
* type(s).
*
* @param {Function} [listener]
* If the first argument was another evented object, this will be
* the listener function.
*/
any(...args) {
const {
isTargetingSelf,
target,
type,
listener
} = normalizeListenArgs(this, args, 'any');
// Targeting this evented object.
if (isTargetingSelf) {
listen(target, 'any', type, listener);
// Targeting another evented object.
} else {
const wrapper = (...largs) => {
this.off(target, type, wrapper);
listener.apply(null, largs);
};
// Use the same function ID as the listener so we can remove it later
// it using the ID of the original listener.
wrapper.guid = listener.guid;
listen(target, 'any', type, wrapper);
}
},
/**
* Removes listener(s) from event(s) on an evented object.
*
* @param {string|Array|Element|Object} [targetOrType]
* If this is a string or array, it represents the event type(s).
*
* Another evented object can be passed here instead, in which case
* ALL 3 arguments are _required_.
*
* @param {string|Array|Function} [typeOrListener]
* If the first argument was a string or array, this may be the
* listener function. Otherwise, this is a string or array of event
* type(s).
*
* @param {Function} [listener]
* If the first argument was another evented object, this will be
* the listener function; otherwise, _all_ listeners bound to the
* event type(s) will be removed.
*/
off(targetOrType, typeOrListener, listener) {
// Targeting this evented object.
if (!targetOrType || isValidEventType(targetOrType)) {
off(this.eventBusEl_, targetOrType, typeOrListener);
// Targeting another evented object.
} else {
const target = targetOrType;
const type = typeOrListener;
// Fail fast and in a meaningful way!
validateTarget(target, this, 'off');
validateEventType(type, this, 'off');
validateListener(listener, this, 'off');
// Ensure there's at least a guid, even if the function hasn't been used
listener = bind_(this, listener);
// Remove the dispose listener on this evented object, which was given
// the same guid as the event listener in on().
this.off('dispose', listener);
if (target.nodeName) {
off(target, type, listener);
off(target, 'dispose', listener);
} else if (isEvented(target)) {
target.off(type, listener);
target.off('dispose', listener);
}
}
},
/**
* Fire an event on this evented object, causing its listeners to be called.
*
* @param {string|Object} event
* An event type or an object with a type property.
*
* @param {Object} [hash]
* An additional object to pass along to listeners.
*
* @return {boolean}
* Whether or not the default behavior was prevented.
*/
trigger(event, hash) {
validateTarget(this.eventBusEl_, this, 'trigger');
const type = event && typeof event !== 'string' ? event.type : event;
if (!isValidEventType(type)) {
throw new Error(`Invalid event type for ${objName(this)}#trigger; ` + 'must be a non-empty string or object with a type key that has a non-empty value.');
}
return trigger(this.eventBusEl_, event, hash);
}
};
/**
* Applies {@link module:evented~EventedMixin|EventedMixin} to a target object.
*
* @param {Object} target
* The object to which to add event methods.
*
* @param {Object} [options={}]
* Options for customizing the mixin behavior.
*
* @param {string} [options.eventBusKey]
* By default, adds a `eventBusEl_` DOM element to the target object,
* which is used as an event bus. If the target object already has a
* DOM element that should be used, pass its key here.
*
* @return {Object}
* The target object.
*/
function evented(target, options = {}) {
const {
eventBusKey
} = options;
// Set or create the eventBusEl_.
if (eventBusKey) {
if (!target[eventBusKey].nodeName) {
throw new Error(`The eventBusKey "${eventBusKey}" does not refer to an element.`);
}
target.eventBusEl_ = target[eventBusKey];
} else {
target.eventBusEl_ = createEl('span', {
className: 'vjs-event-bus'
});
}
Object.assign(target, EventedMixin);
if (target.eventedCallbacks) {
target.eventedCallbacks.forEach(callback => {
callback();
});
}
// When any evented object is disposed, it removes all its listeners.
target.on('dispose', () => {
target.off();
[target, target.el_, target.eventBusEl_].forEach(function (val) {
if (val && DomData.has(val)) {
DomData.delete(val);
}
});
window.setTimeout(() => {
target.eventBusEl_ = null;
}, 0);
});
return target;
}
/**
* @file mixins/stateful.js
* @module stateful
*/
/**
* Contains methods that provide statefulness to an object which is passed
* to {@link module:stateful}.
*
* @mixin StatefulMixin
*/
const StatefulMixin = {
/**
* A hash containing arbitrary keys and values representing the state of
* the object.
*
* @type {Object}
*/
state: {},
/**
* Set the state of an object by mutating its
* {@link module:stateful~StatefulMixin.state|state} object in place.
*
* @fires module:stateful~StatefulMixin#statechanged
* @param {Object|Function} stateUpdates
* A new set of properties to shallow-merge into the plugin state.
* Can be a plain object or a function returning a plain object.
*
* @return {Object|undefined}
* An object containing changes that occurred. If no changes
* occurred, returns `undefined`.
*/
setState(stateUpdates) {
// Support providing the `stateUpdates` state as a function.
if (typeof stateUpdates === 'function') {
stateUpdates = stateUpdates();
}
let changes;
each(stateUpdates, (value, key) => {
// Record the change if the value is different from what's in the
// current state.
if (this.state[key] !== value) {
changes = changes || {};
changes[key] = {
from: this.state[key],
to: value
};
}
this.state[key] = value;
});
// Only trigger "statechange" if there were changes AND we have a trigger
// function. This allows us to not require that the target object be an
// evented object.
if (changes && isEvented(this)) {
/**
* An event triggered on an object that is both
* {@link module:stateful|stateful} and {@link module:evented|evented}
* indicating that its state has changed.
*
* @event module:stateful~StatefulMixin#statechanged
* @type {Object}
* @property {Object} changes
* A hash containing the properties that were changed and
* the values they were changed `from` and `to`.
*/
this.trigger({
changes,
type: 'statechanged'
});
}
return changes;
}
};
/**
* Applies {@link module:stateful~StatefulMixin|StatefulMixin} to a target
* object.
*
* If the target object is {@link module:evented|evented} and has a
* `handleStateChanged` method, that method will be automatically bound to the
* `statechanged` event on itself.
*
* @param {Object} target
* The object to be made stateful.
*
* @param {Object} [defaultState]
* A default set of properties to populate the newly-stateful object's
* `state` property.
*
* @return {Object}
* Returns the `target`.
*/
function stateful(target, defaultState) {
Object.assign(target, StatefulMixin);
// This happens after the mixing-in because we need to replace the `state`
// added in that step.
target.state = Object.assign({}, target.state, defaultState);
// Auto-bind the `handleStateChanged` method of the target object if it exists.
if (typeof target.handleStateChanged === 'function' && isEvented(target)) {
target.on('statechanged', target.handleStateChanged);
}
return target;
}
/**
* @file str.js
* @module to-lower-case
*/
/**
* Lowercase the first letter of a string.
*
* @param {string} string
* String to be lowercased
*
* @return {string}
* The string with a lowercased first letter
*/
const toLowerCase = function (string) {
if (typeof string !== 'string') {
return string;
}
return string.replace(/./, w => w.toLowerCase());
};
/**
* Uppercase the first letter of a string.
*
* @param {string} string
* String to be uppercased
*
* @return {string}
* The string with an uppercased first letter
*/
const toTitleCase$1 = function (string) {
if (typeof string !== 'string') {
return string;
}
return string.replace(/./, w => w.toUpperCase());
};
/**
* Compares the TitleCase versions of the two strings for equality.
*
* @param {string} str1
* The first string to compare
*
* @param {string} str2
* The second string to compare
*
* @return {boolean}
* Whether the TitleCase versions of the strings are equal
*/
const titleCaseEquals = function (str1, str2) {
return toTitleCase$1(str1) === toTitleCase$1(str2);
};
var Str = /*#__PURE__*/Object.freeze({
__proto__: null,
toLowerCase: toLowerCase,
toTitleCase: toTitleCase$1,
titleCaseEquals: titleCaseEquals
});
/**
* Player Component - Base class for all UI objects
*
* @file component.js
*/
/** @import Player from './player' */
/**
* A callback to be called if and when the component is ready.
* `this` will be the Component instance.
*
* @callback ReadyCallback
* @returns {void}
*/
/**
* Base class for all UI Components.
* Components are UI objects which represent both a javascript object and an element
* in the DOM. They can be children of other components, and can have
* children themselves.
*
* Components can also use methods from {@link EventTarget}
*/
class Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of component options.
*
* @param {Object[]} [options.children]
* An array of children objects to initialize this component with. Children objects have
* a name property that will be used if more than one component of the same type needs to be
* added.
*
* @param {string} [options.className]
* A class or space separated list of classes to add the component
*
* @param {ReadyCallback} [ready]
* Function that gets called when the `Component` is ready.
*/
constructor(player, options, ready) {
// The component might be the player itself and we can't pass `this` to super
if (!player && this.play) {
this.player_ = player = this; // eslint-disable-line
} else {
this.player_ = player;
}
this.isDisposed_ = false;
// Hold the reference to the parent component via `addChild` method
this.parentComponent_ = null;
// Make a copy of prototype.options_ to protect against overriding defaults
this.options_ = merge$2({}, this.options_);
// Updated options with supplied options
options = this.options_ = merge$2(this.options_, options);
// Get ID from options or options element if one is supplied
this.id_ = options.id || options.el && options.el.id;
// If there was no ID from the options, generate one
if (!this.id_) {
// Don't require the player ID function in the case of mock players
const id = player && player.id && player.id() || 'no_player';
this.id_ = `${id}_component_${newGUID()}`;
}
this.name_ = options.name || null;
// Create element if one wasn't provided in options
if (options.el) {
this.el_ = options.el;
} else if (options.createEl !== false) {
this.el_ = this.createEl();
}
if (options.className && this.el_) {
options.className.split(' ').forEach(c => this.addClass(c));
}
// Remove the placeholder event methods. If the component is evented, the
// real methods are added next
['on', 'off', 'one', 'any', 'trigger'].forEach(fn => {
this[fn] = undefined;
});
// if evented is anything except false, we want to mixin in evented
if (options.evented !== false) {
// Make this an evented object and use `el_`, if available, as its event bus
evented(this, {
eventBusKey: this.el_ ? 'el_' : null
});
this.handleLanguagechange = this.handleLanguagechange.bind(this);
this.on(this.player_, 'languagechange', this.handleLanguagechange);
}
stateful(this, this.constructor.defaultState);
this.children_ = [];
this.childIndex_ = {};
this.childNameIndex_ = {};
this.setTimeoutIds_ = new Set();
this.setIntervalIds_ = new Set();
this.rafIds_ = new Set();
this.namedRafs_ = new Map();
this.clearingTimersOnDispose_ = false;
// Add any child components in options
if (options.initChildren !== false) {
this.initChildren();
}
// Don't want to trigger ready here or it will go before init is actually
// finished for all children that run this constructor
this.ready(ready);
if (options.reportTouchActivity !== false) {
this.enableTouchActivity();
}
}
// `on`, `off`, `one`, `any` and `trigger` are here so tsc includes them in definitions.
// They are replaced or removed in the constructor
/**
* Adds an `event listener` to an instance of an `EventTarget`. An `event listener` is a
* function that will get called when an event with a certain name gets triggered.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to call with `EventTarget`s
*/
/**
* Removes an `event listener` for a specific event from an instance of `EventTarget`.
* This makes it so that the `event listener` will no longer get called when the
* named event happens.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} [fn]
* The function to remove. If not specified, all listeners managed by Video.js will be removed.
*/
/**
* This function will add an `event listener` that gets triggered only once. After the
* first trigger it will get removed. This is like adding an `event listener`
* with {@link EventTarget#on} that calls {@link EventTarget#off} on itself.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to be called once for each event name.
*/
/**
* This function will add an `event listener` that gets triggered only once and is
* removed from all events. This is like adding an array of `event listener`s
* with {@link EventTarget#on} that calls {@link EventTarget#off} on all events the
* first time it is triggered.
*
* @param {string|string[]} type
* An event name or an array of event names.
*
* @param {Function} fn
* The function to be called once for each event name.
*/
/**
* This function causes an event to happen. This will then cause any `event listeners`
* that are waiting for that event, to get called. If there are no `event listeners`
* for an event then nothing will happen.
*
* If the name of the `Event` that is being triggered is in `EventTarget.allowedEvents_`.
* Trigger will also call the `on` + `uppercaseEventName` function.
*
* Example:
* 'click' is in `EventTarget.allowedEvents_`, so, trigger will attempt to call
* `onClick` if it exists.
*
* @param {string|Event|Object} event
* The name of the event, an `Event`, or an object with a key of type set to
* an event name.
*
* @param {Object} [hash]
* Optionally extra argument to pass through to an event listener
*/
/**
* Dispose of the `Component` and all child components.
*
* @fires Component#dispose
*
* @param {Object} options
* @param {Element} options.originalEl element with which to replace player element
*/
dispose(options = {}) {
// Bail out if the component has already been disposed.
if (this.isDisposed_) {
return;
}
if (this.readyQueue_) {
this.readyQueue_.length = 0;
}
/**
* Triggered when a `Component` is disposed.
*
* @event Component#dispose
* @type {Event}
*
* @property {boolean} [bubbles=false]
* set to false so that the dispose event does not
* bubble up
*/
this.trigger({
type: 'dispose',
bubbles: false
});
this.isDisposed_ = true;
// Dispose all children.
if (this.children_) {
for (let i = this.children_.length - 1; i >= 0; i--) {
if (this.children_[i].dispose) {
this.children_[i].dispose();
}
}
}
// Delete child references
this.children_ = null;
this.childIndex_ = null;
this.childNameIndex_ = null;
this.parentComponent_ = null;
if (this.el_) {
// Remove element from DOM
if (this.el_.parentNode) {
if (options.restoreEl) {
this.el_.parentNode.replaceChild(options.restoreEl, this.el_);
} else {
this.el_.parentNode.removeChild(this.el_);
}
}
this.el_ = null;
}
// remove reference to the player after disposing of the element
this.player_ = null;
}
/**
* Determine whether or not this component has been disposed.
*
* @return {boolean}
* If the component has been disposed, will be `true`. Otherwise, `false`.
*/
isDisposed() {
return Boolean(this.isDisposed_);
}
/**
* Return the {@link Player} that the `Component` has attached to.
*
* @return {Player}
* The player that this `Component` has attached to.
*/
player() {
return this.player_;
}
/**
* Deep merge of options objects with new options.
* > Note: When both `obj` and `options` contain properties whose values are objects.
* The two properties get merged using {@link module:obj.merge}
*
* @param {Object} obj
* The object that contains new options.
*
* @return {Object}
* A new object of `this.options_` and `obj` merged together.
*/
options(obj) {
if (!obj) {
return this.options_;
}
this.options_ = merge$2(this.options_, obj);
return this.options_;
}
/**
* Get the `Component`s DOM element
*
* @return {Element}
* The DOM element for this `Component`.
*/
el() {
return this.el_;
}
/**
* Create the `Component`s DOM element.
*
* @param {string} [tagName]
* Element's DOM node type. e.g. 'div'
*
* @param {Object} [properties]
* An object of properties that should be set.
*
* @param {Object} [attributes]
* An object of attributes that should be set.
*
* @return {Element}
* The element that gets created.
*/
createEl(tagName, properties, attributes) {
return createEl(tagName, properties, attributes);
}
/**
* Localize a string given the string in english.
*
* If tokens are provided, it'll try and run a simple token replacement on the provided string.
* The tokens it looks for look like `{1}` with the index being 1-indexed into the tokens array.
*
* If a `defaultValue` is provided, it'll use that over `string`,
* if a value isn't found in provided language files.
* This is useful if you want to have a descriptive key for token replacement
* but have a succinct localized string and not require `en.json` to be included.
*
* Currently, it is used for the progress bar timing.
* ```js
* {
* "progress bar timing: currentTime={1} duration={2}": "{1} of {2}"
* }
* ```
* It is then used like so:
* ```js
* this.localize('progress bar timing: currentTime={1} duration{2}',
* [this.player_.currentTime(), this.player_.duration()],
* '{1} of {2}');
* ```
*
* Which outputs something like: `01:23 of 24:56`.
*
*
* @param {string} string
* The string to localize and the key to lookup in the language files.
* @param {string[]} [tokens]
* If the current item has token replacements, provide the tokens here.
* @param {string} [defaultValue]
* Defaults to `string`. Can be a default value to use for token replacement
* if the lookup key is needed to be separate.
*
* @return {string}
* The localized string or if no localization exists the english string.
*/
localize(string, tokens, defaultValue = string) {
const code = this.player_.language && this.player_.language();
const languages = this.player_.languages && this.player_.languages();
const language = languages && languages[code];
const primaryCode = code && code.split('-')[0];
const primaryLang = languages && languages[primaryCode];
let localizedString = defaultValue;
if (language && language[string]) {
localizedString = language[string];
} else if (primaryLang && primaryLang[string]) {
localizedString = primaryLang[string];
}
if (tokens) {
localizedString = localizedString.replace(/\{(\d+)\}/g, function (match, index) {
const value = tokens[index - 1];
let ret = value;
if (typeof value === 'undefined') {
ret = match;
}
return ret;
});
}
return localizedString;
}
/**
* Handles language change for the player in components. Should be overridden by sub-components.
*
* @abstract
*/
handleLanguagechange() {}
/**
* Return the `Component`s DOM element. This is where children get inserted.
* This will usually be the the same as the element returned in {@link Component#el}.
*
* @return {Element}
* The content element for this `Component`.
*/
contentEl() {
return this.contentEl_ || this.el_;
}
/**
* Get this `Component`s ID
*
* @return {string}
* The id of this `Component`
*/
id() {
return this.id_;
}
/**
* Get the `Component`s name. The name gets used to reference the `Component`
* and is set during registration.
*
* @return {string}
* The name of this `Component`.
*/
name() {
return this.name_;
}
/**
* Get an array of all child components
*
* @return {Array}
* The children
*/
children() {
return this.children_;
}
/**
* Returns the child `Component` with the given `id`.
*
* @param {string} id
* The id of the child `Component` to get.
*
* @return {Component|undefined}
* The child `Component` with the given `id` or undefined.
*/
getChildById(id) {
return this.childIndex_[id];
}
/**
* Returns the child `Component` with the given `name`.
*
* @param {string} name
* The name of the child `Component` to get.
*
* @return {Component|undefined}
* The child `Component` with the given `name` or undefined.
*/
getChild(name) {
if (!name) {
return;
}
return this.childNameIndex_[name];
}
/**
* Returns the descendant `Component` following the givent
* descendant `names`. For instance ['foo', 'bar', 'baz'] would
* try to get 'foo' on the current component, 'bar' on the 'foo'
* component and 'baz' on the 'bar' component and return undefined
* if any of those don't exist.
*
* @param {...string[]|...string} names
* The name of the child `Component` to get.
*
* @return {Component|undefined}
* The descendant `Component` following the given descendant
* `names` or undefined.
*/
getDescendant(...names) {
// flatten array argument into the main array
names = names.reduce((acc, n) => acc.concat(n), []);
let currentChild = this;
for (let i = 0; i < names.length; i++) {
currentChild = currentChild.getChild(names[i]);
if (!currentChild || !currentChild.getChild) {
return;
}
}
return currentChild;
}
/**
* Adds an SVG icon element to another element or component.
*
* @param {string} iconName
* The name of icon. A list of all the icon names can be found at 'sandbox/svg-icons.html'
*
* @param {Element} [el=this.el()]
* Element to set the title on. Defaults to the current Component's element.
*
* @return {Element}
* The newly created icon element.
*/
setIcon(iconName, el = this.el()) {
// TODO: In v9 of video.js, we will want to remove font icons entirely.
// This means this check, as well as the others throughout the code, and
// the unecessary CSS for font icons, will need to be removed.
// See https://github.com/videojs/video.js/pull/8260 as to which components
// need updating.
if (!this.player_.options_.experimentalSvgIcons) {
return;
}
const xmlnsURL = 'http://www.w3.org/2000/svg';
// The below creates an element in the format of:
// ....
*/
var parseHeaders = function parseHeaders(headers) {
var result = {};
if (!headers) {
return result;
}
headers.trim().split('\n').forEach(function (row) {
var index = row.indexOf(':');
var key = row.slice(0, index).trim().toLowerCase();
var value = row.slice(index + 1).trim();
if (typeof result[key] === 'undefined') {
result[key] = value;
} else if (Array.isArray(result[key])) {
result[key].push(value);
} else {
result[key] = [result[key], value];
}
});
return result;
};
var lib = createXHR; // Allow use of default import syntax in TypeScript
var default_1 = createXHR;
createXHR.XMLHttpRequest = window_1.XMLHttpRequest || noop$1;
createXHR.XDomainRequest = "withCredentials" in new createXHR.XMLHttpRequest() ? createXHR.XMLHttpRequest : window_1.XDomainRequest;
forEachArray(["get", "put", "post", "patch", "head", "delete"], function (method) {
createXHR[method === "delete" ? "del" : method] = function (uri, options, callback) {
options = initParams(uri, options, callback);
options.method = method.toUpperCase();
return _createXHR(options);
};
});
function forEachArray(array, iterator) {
for (var i = 0; i < array.length; i++) {
iterator(array[i]);
}
}
function isEmpty(obj) {
for (var i in obj) {
if (obj.hasOwnProperty(i)) return false;
}
return true;
}
function initParams(uri, options, callback) {
var params = uri;
if (isFunction_1(options)) {
callback = options;
if (typeof uri === "string") {
params = {
uri: uri
};
}
} else {
params = _extends_1({}, options, {
uri: uri
});
}
params.callback = callback;
return params;
}
function createXHR(uri, options, callback) {
options = initParams(uri, options, callback);
return _createXHR(options);
}
function _createXHR(options) {
if (typeof options.callback === "undefined") {
throw new Error("callback argument missing");
} // call all registered request interceptors for a given request type:
if (options.requestType && createXHR.requestInterceptorsStorage.getIsEnabled()) {
var requestInterceptorPayload = {
uri: options.uri || options.url,
headers: options.headers || {},
body: options.body,
metadata: options.metadata || {},
retry: options.retry,
timeout: options.timeout
};
var updatedPayload = createXHR.requestInterceptorsStorage.execute(options.requestType, requestInterceptorPayload);
options.uri = updatedPayload.uri;
options.headers = updatedPayload.headers;
options.body = updatedPayload.body;
options.metadata = updatedPayload.metadata;
options.retry = updatedPayload.retry;
options.timeout = updatedPayload.timeout;
}
var called = false;
var callback = function cbOnce(err, response, body) {
if (!called) {
called = true;
options.callback(err, response, body);
}
};
function readystatechange() {
// do not call load 2 times when response interceptors are enabled
// why do we even need this 2nd load?
if (xhr.readyState === 4 && !createXHR.responseInterceptorsStorage.getIsEnabled()) {
setTimeout(loadFunc, 0);
}
}
function getBody() {
// Chrome with requestType=blob throws errors arround when even testing access to responseText
var body = undefined;
if (xhr.response) {
body = xhr.response;
} else {
body = xhr.responseText || getXml(xhr);
}
if (isJson) {
try {
body = JSON.parse(body);
} catch (e) {}
}
return body;
}
function errorFunc(evt) {
clearTimeout(timeoutTimer);
clearTimeout(options.retryTimeout);
if (!(evt instanceof Error)) {
evt = new Error("" + (evt || "Unknown XMLHttpRequest Error"));
}
evt.statusCode = 0; // we would like to retry on error:
if (!aborted && createXHR.retryManager.getIsEnabled() && options.retry && options.retry.shouldRetry()) {
options.retryTimeout = setTimeout(function () {
options.retry.moveToNextAttempt(); // we want to re-use the same options and the same xhr object:
options.xhr = xhr;
_createXHR(options);
}, options.retry.getCurrentFuzzedDelay());
return;
} // call all registered response interceptors for a given request type:
if (options.requestType && createXHR.responseInterceptorsStorage.getIsEnabled()) {
var responseInterceptorPayload = {
headers: failureResponse.headers || {},
body: failureResponse.body,
responseUrl: xhr.responseURL,
responseType: xhr.responseType
};
var _updatedPayload = createXHR.responseInterceptorsStorage.execute(options.requestType, responseInterceptorPayload);
failureResponse.body = _updatedPayload.body;
failureResponse.headers = _updatedPayload.headers;
}
return callback(evt, failureResponse);
} // will load the data & process the response in a special response object
function loadFunc() {
if (aborted) return;
var status;
clearTimeout(timeoutTimer);
clearTimeout(options.retryTimeout);
if (options.useXDR && xhr.status === undefined) {
//IE8 CORS GET successful response doesn't have a status field, but body is fine
status = 200;
} else {
status = xhr.status === 1223 ? 204 : xhr.status;
}
var response = failureResponse;
var err = null;
if (status !== 0) {
response = {
body: getBody(),
statusCode: status,
method: method,
headers: {},
url: uri,
rawRequest: xhr
};
if (xhr.getAllResponseHeaders) {
//remember xhr can in fact be XDR for CORS in IE
response.headers = parseHeaders(xhr.getAllResponseHeaders());
}
} else {
err = new Error("Internal XMLHttpRequest Error");
} // call all registered response interceptors for a given request type:
if (options.requestType && createXHR.responseInterceptorsStorage.getIsEnabled()) {
var responseInterceptorPayload = {
headers: response.headers || {},
body: response.body,
responseUrl: xhr.responseURL,
responseType: xhr.responseType
};
var _updatedPayload2 = createXHR.responseInterceptorsStorage.execute(options.requestType, responseInterceptorPayload);
response.body = _updatedPayload2.body;
response.headers = _updatedPayload2.headers;
}
return callback(err, response, response.body);
}
var xhr = options.xhr || null;
if (!xhr) {
if (options.cors || options.useXDR) {
xhr = new createXHR.XDomainRequest();
} else {
xhr = new createXHR.XMLHttpRequest();
}
}
var key;
var aborted;
var uri = xhr.url = options.uri || options.url;
var method = xhr.method = options.method || "GET";
var body = options.body || options.data;
var headers = xhr.headers = options.headers || {};
var sync = !!options.sync;
var isJson = false;
var timeoutTimer;
var failureResponse = {
body: undefined,
headers: {},
statusCode: 0,
method: method,
url: uri,
rawRequest: xhr
};
if ("json" in options && options.json !== false) {
isJson = true;
headers["accept"] || headers["Accept"] || (headers["Accept"] = "application/json"); //Don't override existing accept header declared by user
if (method !== "GET" && method !== "HEAD") {
headers["content-type"] || headers["Content-Type"] || (headers["Content-Type"] = "application/json"); //Don't override existing accept header declared by user
body = JSON.stringify(options.json === true ? body : options.json);
}
}
xhr.onreadystatechange = readystatechange;
xhr.onload = loadFunc;
xhr.onerror = errorFunc; // IE9 must have onprogress be set to a unique function.
xhr.onprogress = function () {// IE must die
};
xhr.onabort = function () {
aborted = true;
clearTimeout(options.retryTimeout);
};
xhr.ontimeout = errorFunc;
xhr.open(method, uri, !sync, options.username, options.password); //has to be after open
if (!sync) {
xhr.withCredentials = !!options.withCredentials;
} // Cannot set timeout with sync request
// not setting timeout on the xhr object, because of old webkits etc. not handling that correctly
// both npm's request and jquery 1.x use this kind of timeout, so this is being consistent
if (!sync && options.timeout > 0) {
timeoutTimer = setTimeout(function () {
if (aborted) return;
aborted = true; //IE9 may still call readystatechange
xhr.abort("timeout");
var e = new Error("XMLHttpRequest timeout");
e.code = "ETIMEDOUT";
errorFunc(e);
}, options.timeout);
}
if (xhr.setRequestHeader) {
for (key in headers) {
if (headers.hasOwnProperty(key)) {
xhr.setRequestHeader(key, headers[key]);
}
}
} else if (options.headers && !isEmpty(options.headers)) {
throw new Error("Headers cannot be set on an XDomainRequest object");
}
if ("responseType" in options) {
xhr.responseType = options.responseType;
}
if ("beforeSend" in options && typeof options.beforeSend === "function") {
options.beforeSend(xhr);
} // Microsoft Edge browser sends "undefined" when send is called with undefined value.
// XMLHttpRequest spec says to pass null as body to indicate no body
// See https://github.com/naugtur/xhr/issues/100.
xhr.send(body || null);
return xhr;
}
function getXml(xhr) {
// xhr.responseXML will throw Exception "InvalidStateError" or "DOMException"
// See https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/responseXML.
try {
if (xhr.responseType === "document") {
return xhr.responseXML;
}
var firefoxBugTakenEffect = xhr.responseXML && xhr.responseXML.documentElement.nodeName === "parsererror";
if (xhr.responseType === "" && !firefoxBugTakenEffect) {
return xhr.responseXML;
}
} catch (e) {}
return null;
}
function noop$1() {}
lib.default = default_1;
/**
* @file text-track.js
*/
/** @import Tech from '../tech/tech' */
/**
* Takes a webvtt file contents and parses it into cues
*
* @param {string} srcContent
* webVTT file contents
*
* @param {TextTrack} track
* TextTrack to add cues to. Cues come from the srcContent.
*
* @private
*/
const parseCues = function (srcContent, track) {
const parser = new window.WebVTT.Parser(window, window.vttjs, window.WebVTT.StringDecoder());
const errors = [];
parser.oncue = function (cue) {
track.addCue(cue);
};
parser.onparsingerror = function (error) {
errors.push(error);
};
parser.onflush = function () {
track.trigger({
type: 'loadeddata',
target: track
});
};
parser.parse(srcContent);
if (errors.length > 0) {
if (window.console && window.console.groupCollapsed) {
window.console.groupCollapsed(`Text Track parsing errors for ${track.src}`);
}
errors.forEach(error => log$1.error(error));
if (window.console && window.console.groupEnd) {
window.console.groupEnd();
}
}
parser.flush();
};
/**
* Load a `TextTrack` from a specified url.
*
* @param {string} src
* Url to load track from.
*
* @param {TextTrack} track
* Track to add cues to. Comes from the content at the end of `url`.
*
* @private
*/
const loadTrack = function (src, track) {
const opts = {
uri: src
};
const crossOrigin = isCrossOrigin(src);
if (crossOrigin) {
opts.cors = crossOrigin;
}
const withCredentials = track.tech_.crossOrigin() === 'use-credentials';
if (withCredentials) {
opts.withCredentials = withCredentials;
}
lib(opts, bind_(this, function (err, response, responseBody) {
if (err) {
return log$1.error(err, response);
}
track.loaded_ = true;
// Make sure that vttjs has loaded, otherwise, wait till it finished loading
// NOTE: this is only used for the alt/video.novtt.js build
if (typeof window.WebVTT !== 'function') {
if (track.tech_) {
// to prevent use before define eslint error, we define loadHandler
// as a let here
track.tech_.any(['vttjsloaded', 'vttjserror'], event => {
if (event.type === 'vttjserror') {
log$1.error(`vttjs failed to load, stopping trying to process ${track.src}`);
return;
}
return parseCues(responseBody, track);
});
}
} else {
parseCues(responseBody, track);
}
}));
};
/**
* A representation of a single `TextTrack`.
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#texttrack}
* @extends Track
*/
class TextTrack extends Track {
/**
* Create an instance of this class.
*
* @param {Object} options={}
* Object of option names and values
*
* @param {Tech} options.tech
* A reference to the tech that owns this TextTrack.
*
* @param {TextTrack~Kind} [options.kind='subtitles']
* A valid text track kind.
*
* @param {TextTrack~Mode} [options.mode='disabled']
* A valid text track mode.
*
* @param {string} [options.id='vjs_track_' + Guid.newGUID()]
* A unique id for this TextTrack.
*
* @param {string} [options.label='']
* The menu label for this track.
*
* @param {string} [options.language='']
* A valid two character language code.
*
* @param {string} [options.srclang='']
* A valid two character language code. An alternative, but deprioritized
* version of `options.language`
*
* @param {string} [options.src]
* A url to TextTrack cues.
*
* @param {boolean} [options.default]
* If this track should default to on or off.
*/
constructor(options = {}) {
if (!options.tech) {
throw new Error('A tech was not provided.');
}
const settings = merge$2(options, {
kind: TextTrackKind[options.kind] || 'subtitles',
language: options.language || options.srclang || ''
});
let mode = TextTrackMode[settings.mode] || 'disabled';
const default_ = settings.default;
if (settings.kind === 'metadata' || settings.kind === 'chapters') {
mode = 'hidden';
}
super(settings);
this.tech_ = settings.tech;
this.cues_ = [];
this.activeCues_ = [];
this.preload_ = this.tech_.preloadTextTracks !== false;
const cues = new TextTrackCueList(this.cues_);
const activeCues = new TextTrackCueList(this.activeCues_);
let changed = false;
this.timeupdateHandler = bind_(this, function (event = {}) {
if (this.tech_.isDisposed()) {
return;
}
if (!this.tech_.isReady_) {
if (event.type !== 'timeupdate') {
this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
}
return;
}
// Accessing this.activeCues for the side-effects of updating itself
// due to its nature as a getter function. Do not remove or cues will
// stop updating!
// Use the setter to prevent deletion from uglify (pure_getters rule)
this.activeCues = this.activeCues;
if (changed) {
this.trigger('cuechange');
changed = false;
}
if (event.type !== 'timeupdate') {
this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
}
});
const disposeHandler = () => {
this.stopTracking();
};
this.tech_.one('dispose', disposeHandler);
if (mode !== 'disabled') {
this.startTracking();
}
Object.defineProperties(this, {
/**
* @memberof TextTrack
* @member {boolean} default
* If this track was set to be on or off by default. Cannot be changed after
* creation.
* @instance
*
* @readonly
*/
default: {
get() {
return default_;
},
set() {}
},
/**
* @memberof TextTrack
* @member {string} mode
* Set the mode of this TextTrack to a valid {@link TextTrack~Mode}. Will
* not be set if setting to an invalid mode.
* @instance
*
* @fires TextTrack#modechange
*/
mode: {
get() {
return mode;
},
set(newMode) {
if (!TextTrackMode[newMode]) {
return;
}
if (mode === newMode) {
return;
}
mode = newMode;
if (!this.preload_ && mode !== 'disabled' && this.cues.length === 0) {
// On-demand load.
loadTrack(this.src, this);
}
this.stopTracking();
if (mode !== 'disabled') {
this.startTracking();
}
/**
* An event that fires when mode changes on this track. This allows
* the TextTrackList that holds this track to act accordingly.
*
* > Note: This is not part of the spec!
*
* @event TextTrack#modechange
* @type {Event}
*/
this.trigger('modechange');
}
},
/**
* @memberof TextTrack
* @member {TextTrackCueList} cues
* The text track cue list for this TextTrack.
* @instance
*/
cues: {
get() {
if (!this.loaded_) {
return null;
}
return cues;
},
set() {}
},
/**
* @memberof TextTrack
* @member {TextTrackCueList} activeCues
* The list text track cues that are currently active for this TextTrack.
* @instance
*/
activeCues: {
get() {
if (!this.loaded_) {
return null;
}
// nothing to do
if (this.cues.length === 0) {
return activeCues;
}
const ct = this.tech_.currentTime();
const active = [];
for (let i = 0, l = this.cues.length; i < l; i++) {
const cue = this.cues[i];
if (cue.startTime <= ct && cue.endTime >= ct) {
active.push(cue);
}
}
changed = false;
if (active.length !== this.activeCues_.length) {
changed = true;
} else {
for (let i = 0; i < active.length; i++) {
if (this.activeCues_.indexOf(active[i]) === -1) {
changed = true;
}
}
}
this.activeCues_ = active;
activeCues.setCues_(this.activeCues_);
return activeCues;
},
// /!\ Keep this setter empty (see the timeupdate handler above)
set() {}
}
});
if (settings.src) {
this.src = settings.src;
if (!this.preload_) {
// Tracks will load on-demand.
// Act like we're loaded for other purposes.
this.loaded_ = true;
}
if (this.preload_ || settings.kind !== 'subtitles' && settings.kind !== 'captions') {
loadTrack(this.src, this);
}
} else {
this.loaded_ = true;
}
}
startTracking() {
// More precise cues based on requestVideoFrameCallback with a requestAnimationFram fallback
this.rvf_ = this.tech_.requestVideoFrameCallback(this.timeupdateHandler);
// Also listen to timeupdate in case rVFC/rAF stops (window in background, audio in video el)
this.tech_.on('timeupdate', this.timeupdateHandler);
}
stopTracking() {
if (this.rvf_) {
this.tech_.cancelVideoFrameCallback(this.rvf_);
this.rvf_ = undefined;
}
this.tech_.off('timeupdate', this.timeupdateHandler);
}
/**
* Add a cue to the internal list of cues.
*
* @param {TextTrack~Cue} cue
* The cue to add to our internal list
*/
addCue(originalCue) {
let cue = originalCue;
// Testing if the cue is a VTTCue in a way that survives minification
if (!('getCueAsHTML' in cue)) {
cue = new window.vttjs.VTTCue(originalCue.startTime, originalCue.endTime, originalCue.text);
for (const prop in originalCue) {
if (!(prop in cue)) {
cue[prop] = originalCue[prop];
}
}
// make sure that `id` is copied over
cue.id = originalCue.id;
cue.originalCue_ = originalCue;
}
const tracks = this.tech_.textTracks();
for (let i = 0; i < tracks.length; i++) {
if (tracks[i] !== this) {
tracks[i].removeCue(cue);
}
}
this.cues_.push(cue);
this.cues.setCues_(this.cues_);
}
/**
* Remove a cue from our internal list
*
* @param {TextTrack~Cue} removeCue
* The cue to remove from our internal list
*/
removeCue(removeCue) {
let i = this.cues_.length;
while (i--) {
const cue = this.cues_[i];
if (cue === removeCue || cue.originalCue_ && cue.originalCue_ === removeCue) {
this.cues_.splice(i, 1);
this.cues.setCues_(this.cues_);
break;
}
}
}
}
/**
* cuechange - One or more cues in the track have become active or stopped being active.
*
* @protected
*/
TextTrack.prototype.allowedEvents_ = {
cuechange: 'cuechange'
};
/**
* A representation of a single `AudioTrack`. If it is part of an {@link AudioTrackList}
* only one `AudioTrack` in the list will be enabled at a time.
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotrack}
* @extends Track
*/
class AudioTrack extends Track {
/**
* Create an instance of this class.
*
* @param {Object} [options={}]
* Object of option names and values
*
* @param {AudioTrack~Kind} [options.kind='']
* A valid audio track kind
*
* @param {string} [options.id='vjs_track_' + Guid.newGUID()]
* A unique id for this AudioTrack.
*
* @param {string} [options.label='']
* The menu label for this track.
*
* @param {string} [options.language='']
* A valid two character language code.
*
* @param {boolean} [options.enabled]
* If this track is the one that is currently playing. If this track is part of
* an {@link AudioTrackList}, only one {@link AudioTrack} will be enabled.
*/
constructor(options = {}) {
const settings = merge$2(options, {
kind: AudioTrackKind[options.kind] || ''
});
super(settings);
let enabled = false;
/**
* @memberof AudioTrack
* @member {boolean} enabled
* If this `AudioTrack` is enabled or not. When setting this will
* fire {@link AudioTrack#enabledchange} if the state of enabled is changed.
* @instance
*
* @fires VideoTrack#selectedchange
*/
Object.defineProperty(this, 'enabled', {
get() {
return enabled;
},
set(newEnabled) {
// an invalid or unchanged value
if (typeof newEnabled !== 'boolean' || newEnabled === enabled) {
return;
}
enabled = newEnabled;
/**
* An event that fires when enabled changes on this track. This allows
* the AudioTrackList that holds this track to act accordingly.
*
* > Note: This is not part of the spec! Native tracks will do
* this internally without an event.
*
* @event AudioTrack#enabledchange
* @type {Event}
*/
this.trigger('enabledchange');
}
});
// if the user sets this track to selected then
// set selected to that true value otherwise
// we keep it false
if (settings.enabled) {
this.enabled = settings.enabled;
}
this.loaded_ = true;
}
}
/**
* A representation of a single `VideoTrack`.
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#videotrack}
* @extends Track
*/
class VideoTrack extends Track {
/**
* Create an instance of this class.
*
* @param {Object} [options={}]
* Object of option names and values
*
* @param {string} [options.kind='']
* A valid {@link VideoTrack~Kind}
*
* @param {string} [options.id='vjs_track_' + Guid.newGUID()]
* A unique id for this AudioTrack.
*
* @param {string} [options.label='']
* The menu label for this track.
*
* @param {string} [options.language='']
* A valid two character language code.
*
* @param {boolean} [options.selected]
* If this track is the one that is currently playing.
*/
constructor(options = {}) {
const settings = merge$2(options, {
kind: VideoTrackKind[options.kind] || ''
});
super(settings);
let selected = false;
/**
* @memberof VideoTrack
* @member {boolean} selected
* If this `VideoTrack` is selected or not. When setting this will
* fire {@link VideoTrack#selectedchange} if the state of selected changed.
* @instance
*
* @fires VideoTrack#selectedchange
*/
Object.defineProperty(this, 'selected', {
get() {
return selected;
},
set(newSelected) {
// an invalid or unchanged value
if (typeof newSelected !== 'boolean' || newSelected === selected) {
return;
}
selected = newSelected;
/**
* An event that fires when selected changes on this track. This allows
* the VideoTrackList that holds this track to act accordingly.
*
* > Note: This is not part of the spec! Native tracks will do
* this internally without an event.
*
* @event VideoTrack#selectedchange
* @type {Event}
*/
this.trigger('selectedchange');
}
});
// if the user sets this track to selected then
// set selected to that true value otherwise
// we keep it false
if (settings.selected) {
this.selected = settings.selected;
}
}
}
/**
* @file html-track-element.js
*/
/** @import Tech from '../tech/tech' */
/**
* A single track represented in the DOM.
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#htmltrackelement}
* @extends EventTarget
*/
class HTMLTrackElement extends EventTarget$2 {
/**
* Create an instance of this class.
*
* @param {Object} options={}
* Object of option names and values
*
* @param {Tech} options.tech
* A reference to the tech that owns this HTMLTrackElement.
*
* @param {TextTrack~Kind} [options.kind='subtitles']
* A valid text track kind.
*
* @param {TextTrack~Mode} [options.mode='disabled']
* A valid text track mode.
*
* @param {string} [options.id='vjs_track_' + Guid.newGUID()]
* A unique id for this TextTrack.
*
* @param {string} [options.label='']
* The menu label for this track.
*
* @param {string} [options.language='']
* A valid two character language code.
*
* @param {string} [options.srclang='']
* A valid two character language code. An alternative, but deprioritized
* version of `options.language`
*
* @param {string} [options.src]
* A url to TextTrack cues.
*
* @param {boolean} [options.default]
* If this track should default to on or off.
*/
constructor(options = {}) {
super();
let readyState;
const track = new TextTrack(options);
this.kind = track.kind;
this.src = track.src;
this.srclang = track.language;
this.label = track.label;
this.default = track.default;
Object.defineProperties(this, {
/**
* @memberof HTMLTrackElement
* @member {HTMLTrackElement~ReadyState} readyState
* The current ready state of the track element.
* @instance
*/
readyState: {
get() {
return readyState;
}
},
/**
* @memberof HTMLTrackElement
* @member {TextTrack} track
* The underlying TextTrack object.
* @instance
*
*/
track: {
get() {
return track;
}
}
});
readyState = HTMLTrackElement.NONE;
/**
* @listens TextTrack#loadeddata
* @fires HTMLTrackElement#load
*/
track.addEventListener('loadeddata', () => {
readyState = HTMLTrackElement.LOADED;
this.trigger({
type: 'load',
target: this
});
});
}
}
/**
* @protected
*/
HTMLTrackElement.prototype.allowedEvents_ = {
load: 'load'
};
/**
* The text track not loaded state.
*
* @type {number}
* @static
*/
HTMLTrackElement.NONE = 0;
/**
* The text track loading state.
*
* @type {number}
* @static
*/
HTMLTrackElement.LOADING = 1;
/**
* The text track loaded state.
*
* @type {number}
* @static
*/
HTMLTrackElement.LOADED = 2;
/**
* The text track failed to load state.
*
* @type {number}
* @static
*/
HTMLTrackElement.ERROR = 3;
/*
* This file contains all track properties that are used in
* player.js, tech.js, html5.js and possibly other techs in the future.
*/
const NORMAL = {
audio: {
ListClass: AudioTrackList,
TrackClass: AudioTrack,
capitalName: 'Audio'
},
video: {
ListClass: VideoTrackList,
TrackClass: VideoTrack,
capitalName: 'Video'
},
text: {
ListClass: TextTrackList,
TrackClass: TextTrack,
capitalName: 'Text'
}
};
Object.keys(NORMAL).forEach(function (type) {
NORMAL[type].getterName = `${type}Tracks`;
NORMAL[type].privateName = `${type}Tracks_`;
});
const REMOTE = {
remoteText: {
ListClass: TextTrackList,
TrackClass: TextTrack,
capitalName: 'RemoteText',
getterName: 'remoteTextTracks',
privateName: 'remoteTextTracks_'
},
remoteTextEl: {
ListClass: HtmlTrackElementList,
TrackClass: HTMLTrackElement,
capitalName: 'RemoteTextTrackEls',
getterName: 'remoteTextTrackEls',
privateName: 'remoteTextTrackEls_'
}
};
const ALL = Object.assign({}, NORMAL, REMOTE);
REMOTE.names = Object.keys(REMOTE);
NORMAL.names = Object.keys(NORMAL);
ALL.names = [].concat(REMOTE.names).concat(NORMAL.names);
var minDoc = {};
var topLevel = typeof commonjsGlobal !== 'undefined' ? commonjsGlobal : typeof window !== 'undefined' ? window : {};
var doccy;
if (typeof document !== 'undefined') {
doccy = document;
} else {
doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'];
if (!doccy) {
doccy = topLevel['__GLOBAL_DOCUMENT_CACHE@4'] = minDoc;
}
}
var document_1 = doccy;
/**
* Copyright 2013 vtt.js Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
var _objCreate = Object.create || function () {
function F() {}
return function (o) {
if (arguments.length !== 1) {
throw new Error('Object.create shim only accepts one parameter.');
}
F.prototype = o;
return new F();
};
}();
// Creates a new ParserError object from an errorData object. The errorData
// object should have default code and message properties. The default message
// property can be overriden by passing in a message parameter.
// See ParsingError.Errors below for acceptable errors.
function ParsingError(errorData, message) {
this.name = "ParsingError";
this.code = errorData.code;
this.message = message || errorData.message;
}
ParsingError.prototype = _objCreate(Error.prototype);
ParsingError.prototype.constructor = ParsingError;
// ParsingError metadata for acceptable ParsingErrors.
ParsingError.Errors = {
BadSignature: {
code: 0,
message: "Malformed WebVTT signature."
},
BadTimeStamp: {
code: 1,
message: "Malformed time stamp."
}
};
// Try to parse input as a time stamp.
function parseTimeStamp(input) {
function computeSeconds(h, m, s, f) {
return (h | 0) * 3600 + (m | 0) * 60 + (s | 0) + (f | 0) / 1000;
}
var m = input.match(/^(\d+):(\d{1,2})(:\d{1,2})?\.(\d{3})/);
if (!m) {
return null;
}
if (m[3]) {
// Timestamp takes the form of [hours]:[minutes]:[seconds].[milliseconds]
return computeSeconds(m[1], m[2], m[3].replace(":", ""), m[4]);
} else if (m[1] > 59) {
// Timestamp takes the form of [hours]:[minutes].[milliseconds]
// First position is hours as it's over 59.
return computeSeconds(m[1], m[2], 0, m[4]);
} else {
// Timestamp takes the form of [minutes]:[seconds].[milliseconds]
return computeSeconds(0, m[1], m[2], m[4]);
}
}
// A settings object holds key/value pairs and will ignore anything but the first
// assignment to a specific key.
function Settings() {
this.values = _objCreate(null);
}
Settings.prototype = {
// Only accept the first assignment to any key.
set: function (k, v) {
if (!this.get(k) && v !== "") {
this.values[k] = v;
}
},
// Return the value for a key, or a default value.
// If 'defaultKey' is passed then 'dflt' is assumed to be an object with
// a number of possible default values as properties where 'defaultKey' is
// the key of the property that will be chosen; otherwise it's assumed to be
// a single value.
get: function (k, dflt, defaultKey) {
if (defaultKey) {
return this.has(k) ? this.values[k] : dflt[defaultKey];
}
return this.has(k) ? this.values[k] : dflt;
},
// Check whether we have a value for a key.
has: function (k) {
return k in this.values;
},
// Accept a setting if its one of the given alternatives.
alt: function (k, v, a) {
for (var n = 0; n < a.length; ++n) {
if (v === a[n]) {
this.set(k, v);
break;
}
}
},
// Accept a setting if its a valid (signed) integer.
integer: function (k, v) {
if (/^-?\d+$/.test(v)) {
// integer
this.set(k, parseInt(v, 10));
}
},
// Accept a setting if its a valid percentage.
percent: function (k, v) {
if (v.match(/^([\d]{1,3})(\.[\d]*)?%$/)) {
v = parseFloat(v);
if (v >= 0 && v <= 100) {
this.set(k, v);
return true;
}
}
return false;
}
};
// Helper function to parse input into groups separated by 'groupDelim', and
// interprete each group as a key/value pair separated by 'keyValueDelim'.
function parseOptions(input, callback, keyValueDelim, groupDelim) {
var groups = groupDelim ? input.split(groupDelim) : [input];
for (var i in groups) {
if (typeof groups[i] !== "string") {
continue;
}
var kv = groups[i].split(keyValueDelim);
if (kv.length !== 2) {
continue;
}
var k = kv[0].trim();
var v = kv[1].trim();
callback(k, v);
}
}
function parseCue(input, cue, regionList) {
// Remember the original input if we need to throw an error.
var oInput = input;
// 4.1 WebVTT timestamp
function consumeTimeStamp() {
var ts = parseTimeStamp(input);
if (ts === null) {
throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed timestamp: " + oInput);
}
// Remove time stamp from input.
input = input.replace(/^[^\sa-zA-Z-]+/, "");
return ts;
}
// 4.4.2 WebVTT cue settings
function consumeCueSettings(input, cue) {
var settings = new Settings();
parseOptions(input, function (k, v) {
switch (k) {
case "region":
// Find the last region we parsed with the same region id.
for (var i = regionList.length - 1; i >= 0; i--) {
if (regionList[i].id === v) {
settings.set(k, regionList[i].region);
break;
}
}
break;
case "vertical":
settings.alt(k, v, ["rl", "lr"]);
break;
case "line":
var vals = v.split(","),
vals0 = vals[0];
settings.integer(k, vals0);
settings.percent(k, vals0) ? settings.set("snapToLines", false) : null;
settings.alt(k, vals0, ["auto"]);
if (vals.length === 2) {
settings.alt("lineAlign", vals[1], ["start", "center", "end"]);
}
break;
case "position":
vals = v.split(",");
settings.percent(k, vals[0]);
if (vals.length === 2) {
settings.alt("positionAlign", vals[1], ["start", "center", "end"]);
}
break;
case "size":
settings.percent(k, v);
break;
case "align":
settings.alt(k, v, ["start", "center", "end", "left", "right"]);
break;
}
}, /:/, /\s/);
// Apply default values for any missing fields.
cue.region = settings.get("region", null);
cue.vertical = settings.get("vertical", "");
try {
cue.line = settings.get("line", "auto");
} catch (e) {}
cue.lineAlign = settings.get("lineAlign", "start");
cue.snapToLines = settings.get("snapToLines", true);
cue.size = settings.get("size", 100);
// Safari still uses the old middle value and won't accept center
try {
cue.align = settings.get("align", "center");
} catch (e) {
cue.align = settings.get("align", "middle");
}
try {
cue.position = settings.get("position", "auto");
} catch (e) {
cue.position = settings.get("position", {
start: 0,
left: 0,
center: 50,
middle: 50,
end: 100,
right: 100
}, cue.align);
}
cue.positionAlign = settings.get("positionAlign", {
start: "start",
left: "start",
center: "center",
middle: "center",
end: "end",
right: "end"
}, cue.align);
}
function skipWhitespace() {
input = input.replace(/^\s+/, "");
}
// 4.1 WebVTT cue timings.
skipWhitespace();
cue.startTime = consumeTimeStamp(); // (1) collect cue start time
skipWhitespace();
if (input.substr(0, 3) !== "-->") {
// (3) next characters must match "-->"
throw new ParsingError(ParsingError.Errors.BadTimeStamp, "Malformed time stamp (time stamps must be separated by '-->'): " + oInput);
}
input = input.substr(3);
skipWhitespace();
cue.endTime = consumeTimeStamp(); // (5) collect cue end time
// 4.1 WebVTT cue settings list.
skipWhitespace();
consumeCueSettings(input, cue);
}
// When evaluating this file as part of a Webpack bundle for server
// side rendering, `document` is an empty object.
var TEXTAREA_ELEMENT = document_1.createElement && document_1.createElement("textarea");
var TAG_NAME = {
c: "span",
i: "i",
b: "b",
u: "u",
ruby: "ruby",
rt: "rt",
v: "span",
lang: "span"
};
// 5.1 default text color
// 5.2 default text background color is equivalent to text color with bg_ prefix
var DEFAULT_COLOR_CLASS = {
white: 'rgba(255,255,255,1)',
lime: 'rgba(0,255,0,1)',
cyan: 'rgba(0,255,255,1)',
red: 'rgba(255,0,0,1)',
yellow: 'rgba(255,255,0,1)',
magenta: 'rgba(255,0,255,1)',
blue: 'rgba(0,0,255,1)',
black: 'rgba(0,0,0,1)'
};
var TAG_ANNOTATION = {
v: "title",
lang: "lang"
};
var NEEDS_PARENT = {
rt: "ruby"
};
// Parse content into a document fragment.
function parseContent(window, input) {
function nextToken() {
// Check for end-of-string.
if (!input) {
return null;
}
// Consume 'n' characters from the input.
function consume(result) {
input = input.substr(result.length);
return result;
}
var m = input.match(/^([^<]*)(<[^>]*>?)?/);
// If there is some text before the next tag, return it, otherwise return
// the tag.
return consume(m[1] ? m[1] : m[2]);
}
function unescape(s) {
TEXTAREA_ELEMENT.innerHTML = s;
s = TEXTAREA_ELEMENT.textContent;
TEXTAREA_ELEMENT.textContent = "";
return s;
}
function shouldAdd(current, element) {
return !NEEDS_PARENT[element.localName] || NEEDS_PARENT[element.localName] === current.localName;
}
// Create an element for this tag.
function createElement(type, annotation) {
var tagName = TAG_NAME[type];
if (!tagName) {
return null;
}
var element = window.document.createElement(tagName);
var name = TAG_ANNOTATION[type];
if (name && annotation) {
element[name] = annotation.trim();
}
return element;
}
var rootDiv = window.document.createElement("div"),
current = rootDiv,
t,
tagStack = [];
while ((t = nextToken()) !== null) {
if (t[0] === '<') {
if (t[1] === "/") {
// If the closing tag matches, move back up to the parent node.
if (tagStack.length && tagStack[tagStack.length - 1] === t.substr(2).replace(">", "")) {
tagStack.pop();
current = current.parentNode;
}
// Otherwise just ignore the end tag.
continue;
}
var ts = parseTimeStamp(t.substr(1, t.length - 2));
var node;
if (ts) {
// Timestamps are lead nodes as well.
node = window.document.createProcessingInstruction("timestamp", ts);
current.appendChild(node);
continue;
}
var m = t.match(/^<([^.\s/0-9>]+)(\.[^\s\\>]+)?([^>\\]+)?(\\?)>?$/);
// If we can't parse the tag, skip to the next tag.
if (!m) {
continue;
}
// Try to construct an element, and ignore the tag if we couldn't.
node = createElement(m[1], m[3]);
if (!node) {
continue;
}
// Determine if the tag should be added based on the context of where it
// is placed in the cuetext.
if (!shouldAdd(current, node)) {
continue;
}
// Set the class list (as a list of classes, separated by space).
if (m[2]) {
var classes = m[2].split('.');
classes.forEach(function (cl) {
var bgColor = /^bg_/.test(cl);
// slice out `bg_` if it's a background color
var colorName = bgColor ? cl.slice(3) : cl;
if (DEFAULT_COLOR_CLASS.hasOwnProperty(colorName)) {
var propName = bgColor ? 'background-color' : 'color';
var propValue = DEFAULT_COLOR_CLASS[colorName];
node.style[propName] = propValue;
}
});
node.className = classes.join(' ');
}
// Append the node to the current node, and enter the scope of the new
// node.
tagStack.push(m[1]);
current.appendChild(node);
current = node;
continue;
}
// Text nodes are leaf nodes.
current.appendChild(window.document.createTextNode(unescape(t)));
}
return rootDiv;
}
// This is a list of all the Unicode characters that have a strong
// right-to-left category. What this means is that these characters are
// written right-to-left for sure. It was generated by pulling all the strong
// right-to-left characters out of the Unicode data table. That table can
// found at: http://www.unicode.org/Public/UNIDATA/UnicodeData.txt
var strongRTLRanges = [[0x5be, 0x5be], [0x5c0, 0x5c0], [0x5c3, 0x5c3], [0x5c6, 0x5c6], [0x5d0, 0x5ea], [0x5f0, 0x5f4], [0x608, 0x608], [0x60b, 0x60b], [0x60d, 0x60d], [0x61b, 0x61b], [0x61e, 0x64a], [0x66d, 0x66f], [0x671, 0x6d5], [0x6e5, 0x6e6], [0x6ee, 0x6ef], [0x6fa, 0x70d], [0x70f, 0x710], [0x712, 0x72f], [0x74d, 0x7a5], [0x7b1, 0x7b1], [0x7c0, 0x7ea], [0x7f4, 0x7f5], [0x7fa, 0x7fa], [0x800, 0x815], [0x81a, 0x81a], [0x824, 0x824], [0x828, 0x828], [0x830, 0x83e], [0x840, 0x858], [0x85e, 0x85e], [0x8a0, 0x8a0], [0x8a2, 0x8ac], [0x200f, 0x200f], [0xfb1d, 0xfb1d], [0xfb1f, 0xfb28], [0xfb2a, 0xfb36], [0xfb38, 0xfb3c], [0xfb3e, 0xfb3e], [0xfb40, 0xfb41], [0xfb43, 0xfb44], [0xfb46, 0xfbc1], [0xfbd3, 0xfd3d], [0xfd50, 0xfd8f], [0xfd92, 0xfdc7], [0xfdf0, 0xfdfc], [0xfe70, 0xfe74], [0xfe76, 0xfefc], [0x10800, 0x10805], [0x10808, 0x10808], [0x1080a, 0x10835], [0x10837, 0x10838], [0x1083c, 0x1083c], [0x1083f, 0x10855], [0x10857, 0x1085f], [0x10900, 0x1091b], [0x10920, 0x10939], [0x1093f, 0x1093f], [0x10980, 0x109b7], [0x109be, 0x109bf], [0x10a00, 0x10a00], [0x10a10, 0x10a13], [0x10a15, 0x10a17], [0x10a19, 0x10a33], [0x10a40, 0x10a47], [0x10a50, 0x10a58], [0x10a60, 0x10a7f], [0x10b00, 0x10b35], [0x10b40, 0x10b55], [0x10b58, 0x10b72], [0x10b78, 0x10b7f], [0x10c00, 0x10c48], [0x1ee00, 0x1ee03], [0x1ee05, 0x1ee1f], [0x1ee21, 0x1ee22], [0x1ee24, 0x1ee24], [0x1ee27, 0x1ee27], [0x1ee29, 0x1ee32], [0x1ee34, 0x1ee37], [0x1ee39, 0x1ee39], [0x1ee3b, 0x1ee3b], [0x1ee42, 0x1ee42], [0x1ee47, 0x1ee47], [0x1ee49, 0x1ee49], [0x1ee4b, 0x1ee4b], [0x1ee4d, 0x1ee4f], [0x1ee51, 0x1ee52], [0x1ee54, 0x1ee54], [0x1ee57, 0x1ee57], [0x1ee59, 0x1ee59], [0x1ee5b, 0x1ee5b], [0x1ee5d, 0x1ee5d], [0x1ee5f, 0x1ee5f], [0x1ee61, 0x1ee62], [0x1ee64, 0x1ee64], [0x1ee67, 0x1ee6a], [0x1ee6c, 0x1ee72], [0x1ee74, 0x1ee77], [0x1ee79, 0x1ee7c], [0x1ee7e, 0x1ee7e], [0x1ee80, 0x1ee89], [0x1ee8b, 0x1ee9b], [0x1eea1, 0x1eea3], [0x1eea5, 0x1eea9], [0x1eeab, 0x1eebb], [0x10fffd, 0x10fffd]];
function isStrongRTLChar(charCode) {
for (var i = 0; i < strongRTLRanges.length; i++) {
var currentRange = strongRTLRanges[i];
if (charCode >= currentRange[0] && charCode <= currentRange[1]) {
return true;
}
}
return false;
}
function determineBidi(cueDiv) {
var nodeStack = [],
text = "",
charCode;
if (!cueDiv || !cueDiv.childNodes) {
return "ltr";
}
function pushNodes(nodeStack, node) {
for (var i = node.childNodes.length - 1; i >= 0; i--) {
nodeStack.push(node.childNodes[i]);
}
}
function nextTextNode(nodeStack) {
if (!nodeStack || !nodeStack.length) {
return null;
}
var node = nodeStack.pop(),
text = node.textContent || node.innerText;
if (text) {
// TODO: This should match all unicode type B characters (paragraph
// separator characters). See issue #115.
var m = text.match(/^.*(\n|\r)/);
if (m) {
nodeStack.length = 0;
return m[0];
}
return text;
}
if (node.tagName === "ruby") {
return nextTextNode(nodeStack);
}
if (node.childNodes) {
pushNodes(nodeStack, node);
return nextTextNode(nodeStack);
}
}
pushNodes(nodeStack, cueDiv);
while (text = nextTextNode(nodeStack)) {
for (var i = 0; i < text.length; i++) {
charCode = text.charCodeAt(i);
if (isStrongRTLChar(charCode)) {
return "rtl";
}
}
}
return "ltr";
}
function computeLinePos(cue) {
if (typeof cue.line === "number" && (cue.snapToLines || cue.line >= 0 && cue.line <= 100)) {
return cue.line;
}
if (!cue.track || !cue.track.textTrackList || !cue.track.textTrackList.mediaElement) {
return -1;
}
var track = cue.track,
trackList = track.textTrackList,
count = 0;
for (var i = 0; i < trackList.length && trackList[i] !== track; i++) {
if (trackList[i].mode === "showing") {
count++;
}
}
return ++count * -1;
}
function StyleBox() {}
// Apply styles to a div. If there is no div passed then it defaults to the
// div on 'this'.
StyleBox.prototype.applyStyles = function (styles, div) {
div = div || this.div;
for (var prop in styles) {
if (styles.hasOwnProperty(prop)) {
div.style[prop] = styles[prop];
}
}
};
StyleBox.prototype.formatStyle = function (val, unit) {
return val === 0 ? 0 : val + unit;
};
// Constructs the computed display state of the cue (a div). Places the div
// into the overlay which should be a block level element (usually a div).
function CueStyleBox(window, cue, styleOptions) {
StyleBox.call(this);
this.cue = cue;
// Parse our cue's text into a DOM tree rooted at 'cueDiv'. This div will
// have inline positioning and will function as the cue background box.
this.cueDiv = parseContent(window, cue.text);
var styles = {
color: "rgba(255, 255, 255, 1)",
backgroundColor: "rgba(0, 0, 0, 0.8)",
position: "relative",
left: 0,
right: 0,
top: 0,
bottom: 0,
display: "inline",
writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl",
unicodeBidi: "plaintext"
};
this.applyStyles(styles, this.cueDiv);
// Create an absolutely positioned div that will be used to position the cue
// div. Note, all WebVTT cue-setting alignments are equivalent to the CSS
// mirrors of them except middle instead of center on Safari.
this.div = window.document.createElement("div");
styles = {
direction: determineBidi(this.cueDiv),
writingMode: cue.vertical === "" ? "horizontal-tb" : cue.vertical === "lr" ? "vertical-lr" : "vertical-rl",
unicodeBidi: "plaintext",
textAlign: cue.align === "middle" ? "center" : cue.align,
font: styleOptions.font,
whiteSpace: "pre-line",
position: "absolute"
};
this.applyStyles(styles);
this.div.appendChild(this.cueDiv);
// Calculate the distance from the reference edge of the viewport to the text
// position of the cue box. The reference edge will be resolved later when
// the box orientation styles are applied.
var textPos = 0;
switch (cue.positionAlign) {
case "start":
case "line-left":
textPos = cue.position;
break;
case "center":
textPos = cue.position - cue.size / 2;
break;
case "end":
case "line-right":
textPos = cue.position - cue.size;
break;
}
// Horizontal box orientation; textPos is the distance from the left edge of the
// area to the left edge of the box and cue.size is the distance extending to
// the right from there.
if (cue.vertical === "") {
this.applyStyles({
left: this.formatStyle(textPos, "%"),
width: this.formatStyle(cue.size, "%")
});
// Vertical box orientation; textPos is the distance from the top edge of the
// area to the top edge of the box and cue.size is the height extending
// downwards from there.
} else {
this.applyStyles({
top: this.formatStyle(textPos, "%"),
height: this.formatStyle(cue.size, "%")
});
}
this.move = function (box) {
this.applyStyles({
top: this.formatStyle(box.top, "px"),
bottom: this.formatStyle(box.bottom, "px"),
left: this.formatStyle(box.left, "px"),
right: this.formatStyle(box.right, "px"),
height: this.formatStyle(box.height, "px"),
width: this.formatStyle(box.width, "px")
});
};
}
CueStyleBox.prototype = _objCreate(StyleBox.prototype);
CueStyleBox.prototype.constructor = CueStyleBox;
// Represents the co-ordinates of an Element in a way that we can easily
// compute things with such as if it overlaps or intersects with another Element.
// Can initialize it with either a StyleBox or another BoxPosition.
function BoxPosition(obj) {
// Either a BoxPosition was passed in and we need to copy it, or a StyleBox
// was passed in and we need to copy the results of 'getBoundingClientRect'
// as the object returned is readonly. All co-ordinate values are in reference
// to the viewport origin (top left).
var lh, height, width, top;
if (obj.div) {
height = obj.div.offsetHeight;
width = obj.div.offsetWidth;
top = obj.div.offsetTop;
var rects = (rects = obj.div.childNodes) && (rects = rects[0]) && rects.getClientRects && rects.getClientRects();
obj = obj.div.getBoundingClientRect();
// In certain cases the outter div will be slightly larger then the sum of
// the inner div's lines. This could be due to bold text, etc, on some platforms.
// In this case we should get the average line height and use that. This will
// result in the desired behaviour.
lh = rects ? Math.max(rects[0] && rects[0].height || 0, obj.height / rects.length) : 0;
}
this.left = obj.left;
this.right = obj.right;
this.top = obj.top || top;
this.height = obj.height || height;
this.bottom = obj.bottom || top + (obj.height || height);
this.width = obj.width || width;
this.lineHeight = lh !== undefined ? lh : obj.lineHeight;
}
// Move the box along a particular axis. Optionally pass in an amount to move
// the box. If no amount is passed then the default is the line height of the
// box.
BoxPosition.prototype.move = function (axis, toMove) {
toMove = toMove !== undefined ? toMove : this.lineHeight;
switch (axis) {
case "+x":
this.left += toMove;
this.right += toMove;
break;
case "-x":
this.left -= toMove;
this.right -= toMove;
break;
case "+y":
this.top += toMove;
this.bottom += toMove;
break;
case "-y":
this.top -= toMove;
this.bottom -= toMove;
break;
}
};
// Check if this box overlaps another box, b2.
BoxPosition.prototype.overlaps = function (b2) {
return this.left < b2.right && this.right > b2.left && this.top < b2.bottom && this.bottom > b2.top;
};
// Check if this box overlaps any other boxes in boxes.
BoxPosition.prototype.overlapsAny = function (boxes) {
for (var i = 0; i < boxes.length; i++) {
if (this.overlaps(boxes[i])) {
return true;
}
}
return false;
};
// Check if this box is within another box.
BoxPosition.prototype.within = function (container) {
return this.top >= container.top && this.bottom <= container.bottom && this.left >= container.left && this.right <= container.right;
};
// Check if this box is entirely within the container or it is overlapping
// on the edge opposite of the axis direction passed. For example, if "+x" is
// passed and the box is overlapping on the left edge of the container, then
// return true.
BoxPosition.prototype.overlapsOppositeAxis = function (container, axis) {
switch (axis) {
case "+x":
return this.left < container.left;
case "-x":
return this.right > container.right;
case "+y":
return this.top < container.top;
case "-y":
return this.bottom > container.bottom;
}
};
// Find the percentage of the area that this box is overlapping with another
// box.
BoxPosition.prototype.intersectPercentage = function (b2) {
var x = Math.max(0, Math.min(this.right, b2.right) - Math.max(this.left, b2.left)),
y = Math.max(0, Math.min(this.bottom, b2.bottom) - Math.max(this.top, b2.top)),
intersectArea = x * y;
return intersectArea / (this.height * this.width);
};
// Convert the positions from this box to CSS compatible positions using
// the reference container's positions. This has to be done because this
// box's positions are in reference to the viewport origin, whereas, CSS
// values are in referecne to their respective edges.
BoxPosition.prototype.toCSSCompatValues = function (reference) {
return {
top: this.top - reference.top,
bottom: reference.bottom - this.bottom,
left: this.left - reference.left,
right: reference.right - this.right,
height: this.height,
width: this.width
};
};
// Get an object that represents the box's position without anything extra.
// Can pass a StyleBox, HTMLElement, or another BoxPositon.
BoxPosition.getSimpleBoxPosition = function (obj) {
var height = obj.div ? obj.div.offsetHeight : obj.tagName ? obj.offsetHeight : 0;
var width = obj.div ? obj.div.offsetWidth : obj.tagName ? obj.offsetWidth : 0;
var top = obj.div ? obj.div.offsetTop : obj.tagName ? obj.offsetTop : 0;
obj = obj.div ? obj.div.getBoundingClientRect() : obj.tagName ? obj.getBoundingClientRect() : obj;
var ret = {
left: obj.left,
right: obj.right,
top: obj.top || top,
height: obj.height || height,
bottom: obj.bottom || top + (obj.height || height),
width: obj.width || width
};
return ret;
};
// Move a StyleBox to its specified, or next best, position. The containerBox
// is the box that contains the StyleBox, such as a div. boxPositions are
// a list of other boxes that the styleBox can't overlap with.
function moveBoxToLinePosition(window, styleBox, containerBox, boxPositions) {
// Find the best position for a cue box, b, on the video. The axis parameter
// is a list of axis, the order of which, it will move the box along. For example:
// Passing ["+x", "-x"] will move the box first along the x axis in the positive
// direction. If it doesn't find a good position for it there it will then move
// it along the x axis in the negative direction.
function findBestPosition(b, axis) {
var bestPosition,
specifiedPosition = new BoxPosition(b),
percentage = 1; // Highest possible so the first thing we get is better.
for (var i = 0; i < axis.length; i++) {
while (b.overlapsOppositeAxis(containerBox, axis[i]) || b.within(containerBox) && b.overlapsAny(boxPositions)) {
b.move(axis[i]);
}
// We found a spot where we aren't overlapping anything. This is our
// best position.
if (b.within(containerBox)) {
return b;
}
var p = b.intersectPercentage(containerBox);
// If we're outside the container box less then we were on our last try
// then remember this position as the best position.
if (percentage > p) {
bestPosition = new BoxPosition(b);
percentage = p;
}
// Reset the box position to the specified position.
b = new BoxPosition(specifiedPosition);
}
return bestPosition || specifiedPosition;
}
var boxPosition = new BoxPosition(styleBox),
cue = styleBox.cue,
linePos = computeLinePos(cue),
axis = [];
// If we have a line number to align the cue to.
if (cue.snapToLines) {
var size;
switch (cue.vertical) {
case "":
axis = ["+y", "-y"];
size = "height";
break;
case "rl":
axis = ["+x", "-x"];
size = "width";
break;
case "lr":
axis = ["-x", "+x"];
size = "width";
break;
}
var step = boxPosition.lineHeight,
position = step * Math.round(linePos),
maxPosition = containerBox[size] + step,
initialAxis = axis[0];
// If the specified intial position is greater then the max position then
// clamp the box to the amount of steps it would take for the box to
// reach the max position.
if (Math.abs(position) > maxPosition) {
position = position < 0 ? -1 : 1;
position *= Math.ceil(maxPosition / step) * step;
}
// If computed line position returns negative then line numbers are
// relative to the bottom of the video instead of the top. Therefore, we
// need to increase our initial position by the length or width of the
// video, depending on the writing direction, and reverse our axis directions.
if (linePos < 0) {
position += cue.vertical === "" ? containerBox.height : containerBox.width;
axis = axis.reverse();
}
// Move the box to the specified position. This may not be its best
// position.
boxPosition.move(initialAxis, position);
} else {
// If we have a percentage line value for the cue.
var calculatedPercentage = boxPosition.lineHeight / containerBox.height * 100;
switch (cue.lineAlign) {
case "center":
linePos -= calculatedPercentage / 2;
break;
case "end":
linePos -= calculatedPercentage;
break;
}
// Apply initial line position to the cue box.
switch (cue.vertical) {
case "":
styleBox.applyStyles({
top: styleBox.formatStyle(linePos, "%")
});
break;
case "rl":
styleBox.applyStyles({
left: styleBox.formatStyle(linePos, "%")
});
break;
case "lr":
styleBox.applyStyles({
right: styleBox.formatStyle(linePos, "%")
});
break;
}
axis = ["+y", "-x", "+x", "-y"];
// Get the box position again after we've applied the specified positioning
// to it.
boxPosition = new BoxPosition(styleBox);
}
var bestPosition = findBestPosition(boxPosition, axis);
styleBox.move(bestPosition.toCSSCompatValues(containerBox));
}
function WebVTT$1() {
// Nothing
}
// Helper to allow strings to be decoded instead of the default binary utf8 data.
WebVTT$1.StringDecoder = function () {
return {
decode: function (data) {
if (!data) {
return "";
}
if (typeof data !== "string") {
throw new Error("Error - expected string data.");
}
return decodeURIComponent(encodeURIComponent(data));
}
};
};
WebVTT$1.convertCueToDOMTree = function (window, cuetext) {
if (!window || !cuetext) {
return null;
}
return parseContent(window, cuetext);
};
var FONT_SIZE_PERCENT = 0.05;
var FONT_STYLE = "sans-serif";
var CUE_BACKGROUND_PADDING = "1.5%";
// Runs the processing model over the cues and regions passed to it.
// @param overlay A block level element (usually a div) that the computed cues
// and regions will be placed into.
WebVTT$1.processCues = function (window, cues, overlay) {
if (!window || !cues || !overlay) {
return null;
}
// Remove all previous children.
while (overlay.firstChild) {
overlay.removeChild(overlay.firstChild);
}
var paddedOverlay = window.document.createElement("div");
paddedOverlay.style.position = "absolute";
paddedOverlay.style.left = "0";
paddedOverlay.style.right = "0";
paddedOverlay.style.top = "0";
paddedOverlay.style.bottom = "0";
paddedOverlay.style.margin = CUE_BACKGROUND_PADDING;
overlay.appendChild(paddedOverlay);
// Determine if we need to compute the display states of the cues. This could
// be the case if a cue's state has been changed since the last computation or
// if it has not been computed yet.
function shouldCompute(cues) {
for (var i = 0; i < cues.length; i++) {
if (cues[i].hasBeenReset || !cues[i].displayState) {
return true;
}
}
return false;
}
// We don't need to recompute the cues' display states. Just reuse them.
if (!shouldCompute(cues)) {
for (var i = 0; i < cues.length; i++) {
paddedOverlay.appendChild(cues[i].displayState);
}
return;
}
var boxPositions = [],
containerBox = BoxPosition.getSimpleBoxPosition(paddedOverlay),
fontSize = Math.round(containerBox.height * FONT_SIZE_PERCENT * 100) / 100;
var styleOptions = {
font: fontSize + "px " + FONT_STYLE
};
(function () {
var styleBox, cue;
for (var i = 0; i < cues.length; i++) {
cue = cues[i];
// Compute the intial position and styles of the cue div.
styleBox = new CueStyleBox(window, cue, styleOptions);
paddedOverlay.appendChild(styleBox.div);
// Move the cue div to it's correct line position.
moveBoxToLinePosition(window, styleBox, containerBox, boxPositions);
// Remember the computed div so that we don't have to recompute it later
// if we don't have too.
cue.displayState = styleBox.div;
boxPositions.push(BoxPosition.getSimpleBoxPosition(styleBox));
}
})();
};
WebVTT$1.Parser = function (window, vttjs, decoder) {
if (!decoder) {
decoder = vttjs;
vttjs = {};
}
if (!vttjs) {
vttjs = {};
}
this.window = window;
this.vttjs = vttjs;
this.state = "INITIAL";
this.buffer = "";
this.decoder = decoder || new TextDecoder("utf8");
this.regionList = [];
};
WebVTT$1.Parser.prototype = {
// If the error is a ParsingError then report it to the consumer if
// possible. If it's not a ParsingError then throw it like normal.
reportOrThrowError: function (e) {
if (e instanceof ParsingError) {
this.onparsingerror && this.onparsingerror(e);
} else {
throw e;
}
},
parse: function (data) {
var self = this;
// If there is no data then we won't decode it, but will just try to parse
// whatever is in buffer already. This may occur in circumstances, for
// example when flush() is called.
if (data) {
// Try to decode the data that we received.
self.buffer += self.decoder.decode(data, {
stream: true
});
}
function collectNextLine() {
var buffer = self.buffer;
var pos = 0;
while (pos < buffer.length && buffer[pos] !== '\r' && buffer[pos] !== '\n') {
++pos;
}
var line = buffer.substr(0, pos);
// Advance the buffer early in case we fail below.
if (buffer[pos] === '\r') {
++pos;
}
if (buffer[pos] === '\n') {
++pos;
}
self.buffer = buffer.substr(pos);
return line;
}
// 3.4 WebVTT region and WebVTT region settings syntax
function parseRegion(input) {
var settings = new Settings();
parseOptions(input, function (k, v) {
switch (k) {
case "id":
settings.set(k, v);
break;
case "width":
settings.percent(k, v);
break;
case "lines":
settings.integer(k, v);
break;
case "regionanchor":
case "viewportanchor":
var xy = v.split(',');
if (xy.length !== 2) {
break;
}
// We have to make sure both x and y parse, so use a temporary
// settings object here.
var anchor = new Settings();
anchor.percent("x", xy[0]);
anchor.percent("y", xy[1]);
if (!anchor.has("x") || !anchor.has("y")) {
break;
}
settings.set(k + "X", anchor.get("x"));
settings.set(k + "Y", anchor.get("y"));
break;
case "scroll":
settings.alt(k, v, ["up"]);
break;
}
}, /=/, /\s/);
// Create the region, using default values for any values that were not
// specified.
if (settings.has("id")) {
var region = new (self.vttjs.VTTRegion || self.window.VTTRegion)();
region.width = settings.get("width", 100);
region.lines = settings.get("lines", 3);
region.regionAnchorX = settings.get("regionanchorX", 0);
region.regionAnchorY = settings.get("regionanchorY", 100);
region.viewportAnchorX = settings.get("viewportanchorX", 0);
region.viewportAnchorY = settings.get("viewportanchorY", 100);
region.scroll = settings.get("scroll", "");
// Register the region.
self.onregion && self.onregion(region);
// Remember the VTTRegion for later in case we parse any VTTCues that
// reference it.
self.regionList.push({
id: settings.get("id"),
region: region
});
}
}
// draft-pantos-http-live-streaming-20
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-20#section-3.5
// 3.5 WebVTT
function parseTimestampMap(input) {
var settings = new Settings();
parseOptions(input, function (k, v) {
switch (k) {
case "MPEGT":
settings.integer(k + 'S', v);
break;
case "LOCA":
settings.set(k + 'L', parseTimeStamp(v));
break;
}
}, /[^\d]:/, /,/);
self.ontimestampmap && self.ontimestampmap({
"MPEGTS": settings.get("MPEGTS"),
"LOCAL": settings.get("LOCAL")
});
}
// 3.2 WebVTT metadata header syntax
function parseHeader(input) {
if (input.match(/X-TIMESTAMP-MAP/)) {
// This line contains HLS X-TIMESTAMP-MAP metadata
parseOptions(input, function (k, v) {
switch (k) {
case "X-TIMESTAMP-MAP":
parseTimestampMap(v);
break;
}
}, /=/);
} else {
parseOptions(input, function (k, v) {
switch (k) {
case "Region":
// 3.3 WebVTT region metadata header syntax
parseRegion(v);
break;
}
}, /:/);
}
}
// 5.1 WebVTT file parsing.
try {
var line;
if (self.state === "INITIAL") {
// We can't start parsing until we have the first line.
if (!/\r\n|\n/.test(self.buffer)) {
return this;
}
line = collectNextLine();
var m = line.match(/^WEBVTT([ \t].*)?$/);
if (!m || !m[0]) {
throw new ParsingError(ParsingError.Errors.BadSignature);
}
self.state = "HEADER";
}
var alreadyCollectedLine = false;
while (self.buffer) {
// We can't parse a line until we have the full line.
if (!/\r\n|\n/.test(self.buffer)) {
return this;
}
if (!alreadyCollectedLine) {
line = collectNextLine();
} else {
alreadyCollectedLine = false;
}
switch (self.state) {
case "HEADER":
// 13-18 - Allow a header (metadata) under the WEBVTT line.
if (/:/.test(line)) {
parseHeader(line);
} else if (!line) {
// An empty line terminates the header and starts the body (cues).
self.state = "ID";
}
continue;
case "NOTE":
// Ignore NOTE blocks.
if (!line) {
self.state = "ID";
}
continue;
case "ID":
// Check for the start of NOTE blocks.
if (/^NOTE($|[ \t])/.test(line)) {
self.state = "NOTE";
break;
}
// 19-29 - Allow any number of line terminators, then initialize new cue values.
if (!line) {
continue;
}
self.cue = new (self.vttjs.VTTCue || self.window.VTTCue)(0, 0, "");
// Safari still uses the old middle value and won't accept center
try {
self.cue.align = "center";
} catch (e) {
self.cue.align = "middle";
}
self.state = "CUE";
// 30-39 - Check if self line contains an optional identifier or timing data.
if (line.indexOf("-->") === -1) {
self.cue.id = line;
continue;
}
// Process line as start of a cue.
/*falls through*/
case "CUE":
// 40 - Collect cue timings and settings.
try {
parseCue(line, self.cue, self.regionList);
} catch (e) {
self.reportOrThrowError(e);
// In case of an error ignore rest of the cue.
self.cue = null;
self.state = "BADCUE";
continue;
}
self.state = "CUETEXT";
continue;
case "CUETEXT":
var hasSubstring = line.indexOf("-->") !== -1;
// 34 - If we have an empty line then report the cue.
// 35 - If we have the special substring '-->' then report the cue,
// but do not collect the line as we need to process the current
// one as a new cue.
if (!line || hasSubstring && (alreadyCollectedLine = true)) {
// We are done parsing self cue.
self.oncue && self.oncue(self.cue);
self.cue = null;
self.state = "ID";
continue;
}
if (self.cue.text) {
self.cue.text += "\n";
}
self.cue.text += line.replace(/\u2028/g, '\n').replace(/u2029/g, '\n');
continue;
case "BADCUE":
// BADCUE
// 54-62 - Collect and discard the remaining cue.
if (!line) {
self.state = "ID";
}
continue;
}
}
} catch (e) {
self.reportOrThrowError(e);
// If we are currently parsing a cue, report what we have.
if (self.state === "CUETEXT" && self.cue && self.oncue) {
self.oncue(self.cue);
}
self.cue = null;
// Enter BADWEBVTT state if header was not parsed correctly otherwise
// another exception occurred so enter BADCUE state.
self.state = self.state === "INITIAL" ? "BADWEBVTT" : "BADCUE";
}
return this;
},
flush: function () {
var self = this;
try {
// Finish decoding the stream.
self.buffer += self.decoder.decode();
// Synthesize the end of the current cue or region.
if (self.cue || self.state === "HEADER") {
self.buffer += "\n\n";
self.parse();
}
// If we've flushed, parsed, and we're still on the INITIAL state then
// that means we don't have enough of the stream to parse the first
// line.
if (self.state === "INITIAL") {
throw new ParsingError(ParsingError.Errors.BadSignature);
}
} catch (e) {
self.reportOrThrowError(e);
}
self.onflush && self.onflush();
return this;
}
};
var vtt = WebVTT$1;
/**
* Copyright 2013 vtt.js Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var autoKeyword = "auto";
var directionSetting = {
"": 1,
"lr": 1,
"rl": 1
};
var alignSetting = {
"start": 1,
"center": 1,
"end": 1,
"left": 1,
"right": 1,
"auto": 1,
"line-left": 1,
"line-right": 1
};
function findDirectionSetting(value) {
if (typeof value !== "string") {
return false;
}
var dir = directionSetting[value.toLowerCase()];
return dir ? value.toLowerCase() : false;
}
function findAlignSetting(value) {
if (typeof value !== "string") {
return false;
}
var align = alignSetting[value.toLowerCase()];
return align ? value.toLowerCase() : false;
}
function VTTCue(startTime, endTime, text) {
/**
* Shim implementation specific properties. These properties are not in
* the spec.
*/
// Lets us know when the VTTCue's data has changed in such a way that we need
// to recompute its display state. This lets us compute its display state
// lazily.
this.hasBeenReset = false;
/**
* VTTCue and TextTrackCue properties
* http://dev.w3.org/html5/webvtt/#vttcue-interface
*/
var _id = "";
var _pauseOnExit = false;
var _startTime = startTime;
var _endTime = endTime;
var _text = text;
var _region = null;
var _vertical = "";
var _snapToLines = true;
var _line = "auto";
var _lineAlign = "start";
var _position = "auto";
var _positionAlign = "auto";
var _size = 100;
var _align = "center";
Object.defineProperties(this, {
"id": {
enumerable: true,
get: function () {
return _id;
},
set: function (value) {
_id = "" + value;
}
},
"pauseOnExit": {
enumerable: true,
get: function () {
return _pauseOnExit;
},
set: function (value) {
_pauseOnExit = !!value;
}
},
"startTime": {
enumerable: true,
get: function () {
return _startTime;
},
set: function (value) {
if (typeof value !== "number") {
throw new TypeError("Start time must be set to a number.");
}
_startTime = value;
this.hasBeenReset = true;
}
},
"endTime": {
enumerable: true,
get: function () {
return _endTime;
},
set: function (value) {
if (typeof value !== "number") {
throw new TypeError("End time must be set to a number.");
}
_endTime = value;
this.hasBeenReset = true;
}
},
"text": {
enumerable: true,
get: function () {
return _text;
},
set: function (value) {
_text = "" + value;
this.hasBeenReset = true;
}
},
"region": {
enumerable: true,
get: function () {
return _region;
},
set: function (value) {
_region = value;
this.hasBeenReset = true;
}
},
"vertical": {
enumerable: true,
get: function () {
return _vertical;
},
set: function (value) {
var setting = findDirectionSetting(value);
// Have to check for false because the setting an be an empty string.
if (setting === false) {
throw new SyntaxError("Vertical: an invalid or illegal direction string was specified.");
}
_vertical = setting;
this.hasBeenReset = true;
}
},
"snapToLines": {
enumerable: true,
get: function () {
return _snapToLines;
},
set: function (value) {
_snapToLines = !!value;
this.hasBeenReset = true;
}
},
"line": {
enumerable: true,
get: function () {
return _line;
},
set: function (value) {
if (typeof value !== "number" && value !== autoKeyword) {
throw new SyntaxError("Line: an invalid number or illegal string was specified.");
}
_line = value;
this.hasBeenReset = true;
}
},
"lineAlign": {
enumerable: true,
get: function () {
return _lineAlign;
},
set: function (value) {
var setting = findAlignSetting(value);
if (!setting) {
console.warn("lineAlign: an invalid or illegal string was specified.");
} else {
_lineAlign = setting;
this.hasBeenReset = true;
}
}
},
"position": {
enumerable: true,
get: function () {
return _position;
},
set: function (value) {
if (value < 0 || value > 100) {
throw new Error("Position must be between 0 and 100.");
}
_position = value;
this.hasBeenReset = true;
}
},
"positionAlign": {
enumerable: true,
get: function () {
return _positionAlign;
},
set: function (value) {
var setting = findAlignSetting(value);
if (!setting) {
console.warn("positionAlign: an invalid or illegal string was specified.");
} else {
_positionAlign = setting;
this.hasBeenReset = true;
}
}
},
"size": {
enumerable: true,
get: function () {
return _size;
},
set: function (value) {
if (value < 0 || value > 100) {
throw new Error("Size must be between 0 and 100.");
}
_size = value;
this.hasBeenReset = true;
}
},
"align": {
enumerable: true,
get: function () {
return _align;
},
set: function (value) {
var setting = findAlignSetting(value);
if (!setting) {
throw new SyntaxError("align: an invalid or illegal alignment string was specified.");
}
_align = setting;
this.hasBeenReset = true;
}
}
});
/**
* Other spec defined properties
*/
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state
this.displayState = undefined;
}
/**
* VTTCue methods
*/
VTTCue.prototype.getCueAsHTML = function () {
// Assume WebVTT.convertCueToDOMTree is on the global.
return WebVTT.convertCueToDOMTree(window, this.text);
};
var vttcue = VTTCue;
/**
* Copyright 2013 vtt.js Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
var scrollSetting = {
"": true,
"up": true
};
function findScrollSetting(value) {
if (typeof value !== "string") {
return false;
}
var scroll = scrollSetting[value.toLowerCase()];
return scroll ? value.toLowerCase() : false;
}
function isValidPercentValue(value) {
return typeof value === "number" && value >= 0 && value <= 100;
}
// VTTRegion shim http://dev.w3.org/html5/webvtt/#vttregion-interface
function VTTRegion() {
var _width = 100;
var _lines = 3;
var _regionAnchorX = 0;
var _regionAnchorY = 100;
var _viewportAnchorX = 0;
var _viewportAnchorY = 100;
var _scroll = "";
Object.defineProperties(this, {
"width": {
enumerable: true,
get: function () {
return _width;
},
set: function (value) {
if (!isValidPercentValue(value)) {
throw new Error("Width must be between 0 and 100.");
}
_width = value;
}
},
"lines": {
enumerable: true,
get: function () {
return _lines;
},
set: function (value) {
if (typeof value !== "number") {
throw new TypeError("Lines must be set to a number.");
}
_lines = value;
}
},
"regionAnchorY": {
enumerable: true,
get: function () {
return _regionAnchorY;
},
set: function (value) {
if (!isValidPercentValue(value)) {
throw new Error("RegionAnchorX must be between 0 and 100.");
}
_regionAnchorY = value;
}
},
"regionAnchorX": {
enumerable: true,
get: function () {
return _regionAnchorX;
},
set: function (value) {
if (!isValidPercentValue(value)) {
throw new Error("RegionAnchorY must be between 0 and 100.");
}
_regionAnchorX = value;
}
},
"viewportAnchorY": {
enumerable: true,
get: function () {
return _viewportAnchorY;
},
set: function (value) {
if (!isValidPercentValue(value)) {
throw new Error("ViewportAnchorY must be between 0 and 100.");
}
_viewportAnchorY = value;
}
},
"viewportAnchorX": {
enumerable: true,
get: function () {
return _viewportAnchorX;
},
set: function (value) {
if (!isValidPercentValue(value)) {
throw new Error("ViewportAnchorX must be between 0 and 100.");
}
_viewportAnchorX = value;
}
},
"scroll": {
enumerable: true,
get: function () {
return _scroll;
},
set: function (value) {
var setting = findScrollSetting(value);
// Have to check for false as an empty string is a legal value.
if (setting === false) {
console.warn("Scroll: an invalid or illegal string was specified.");
} else {
_scroll = setting;
}
}
}
});
}
var vttregion = VTTRegion;
var browserIndex = createCommonjsModule(function (module) {
/**
* Copyright 2013 vtt.js Contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// Default exports for Node. Export the extended versions of VTTCue and
// VTTRegion in Node since we likely want the capability to convert back and
// forth between JSON. If we don't then it's not that big of a deal since we're
// off browser.
var vttjs = module.exports = {
WebVTT: vtt,
VTTCue: vttcue,
VTTRegion: vttregion
};
window_1.vttjs = vttjs;
window_1.WebVTT = vttjs.WebVTT;
var cueShim = vttjs.VTTCue;
var regionShim = vttjs.VTTRegion;
var nativeVTTCue = window_1.VTTCue;
var nativeVTTRegion = window_1.VTTRegion;
vttjs.shim = function () {
window_1.VTTCue = cueShim;
window_1.VTTRegion = regionShim;
};
vttjs.restore = function () {
window_1.VTTCue = nativeVTTCue;
window_1.VTTRegion = nativeVTTRegion;
};
if (!window_1.VTTCue) {
vttjs.shim();
}
});
browserIndex.WebVTT;
browserIndex.VTTCue;
browserIndex.VTTRegion;
/**
* @file tech.js
*/
/** @import { TimeRange } from '../utils/time' */
/**
* An Object containing a structure like: `{src: 'url', type: 'mimetype'}` or string
* that just contains the src url alone.
* * `var SourceObject = {src: 'http://ex.com/video.mp4', type: 'video/mp4'};`
* `var SourceString = 'http://example.com/some-video.mp4';`
*
* @typedef {Object|string} SourceObject
*
* @property {string} src
* The url to the source
*
* @property {string} type
* The mime type of the source
*/
/**
* A function used by {@link Tech} to create a new {@link TextTrack}.
*
* @private
*
* @param {Tech} self
* An instance of the Tech class.
*
* @param {string} kind
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
*
* @param {string} [label]
* Label to identify the text track
*
* @param {string} [language]
* Two letter language abbreviation
*
* @param {Object} [options={}]
* An object with additional text track options
*
* @return {TextTrack}
* The text track that was created.
*/
function createTrackHelper(self, kind, label, language, options = {}) {
const tracks = self.textTracks();
options.kind = kind;
if (label) {
options.label = label;
}
if (language) {
options.language = language;
}
options.tech = self;
const track = new ALL.text.TrackClass(options);
tracks.addTrack(track);
return track;
}
/**
* This is the base class for media playback technology controllers, such as
* {@link HTML5}
*
* @extends Component
*/
class Tech extends Component$1 {
/**
* Create an instance of this Tech.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* Callback function to call when the `HTML5` Tech is ready.
*/
constructor(options = {}, ready = function () {}) {
// we don't want the tech to report user activity automatically.
// This is done manually in addControlsListeners
options.reportTouchActivity = false;
super(null, options, ready);
this.onDurationChange_ = e => this.onDurationChange(e);
this.trackProgress_ = e => this.trackProgress(e);
this.trackCurrentTime_ = e => this.trackCurrentTime(e);
this.stopTrackingCurrentTime_ = e => this.stopTrackingCurrentTime(e);
this.disposeSourceHandler_ = e => this.disposeSourceHandler(e);
this.queuedHanders_ = new Set();
// keep track of whether the current source has played at all to
// implement a very limited played()
this.hasStarted_ = false;
this.on('playing', function () {
this.hasStarted_ = true;
});
this.on('loadstart', function () {
this.hasStarted_ = false;
});
ALL.names.forEach(name => {
const props = ALL[name];
if (options && options[props.getterName]) {
this[props.privateName] = options[props.getterName];
}
});
// Manually track progress in cases where the browser/tech doesn't report it.
if (!this.featuresProgressEvents) {
this.manualProgressOn();
}
// Manually track timeupdates in cases where the browser/tech doesn't report it.
if (!this.featuresTimeupdateEvents) {
this.manualTimeUpdatesOn();
}
['Text', 'Audio', 'Video'].forEach(track => {
if (options[`native${track}Tracks`] === false) {
this[`featuresNative${track}Tracks`] = false;
}
});
if (options.nativeCaptions === false || options.nativeTextTracks === false) {
this.featuresNativeTextTracks = false;
} else if (options.nativeCaptions === true || options.nativeTextTracks === true) {
this.featuresNativeTextTracks = true;
}
if (!this.featuresNativeTextTracks) {
this.emulateTextTracks();
}
this.preloadTextTracks = options.preloadTextTracks !== false;
this.autoRemoteTextTracks_ = new ALL.text.ListClass();
this.initTrackListeners();
// Turn on component tap events only if not using native controls
if (!options.nativeControlsForTouch) {
this.emitTapEvents();
}
if (this.constructor) {
this.name_ = this.constructor.name || 'Unknown Tech';
}
}
/**
* A special function to trigger source set in a way that will allow player
* to re-trigger if the player or tech are not ready yet.
*
* @fires Tech#sourceset
* @param {string} src The source string at the time of the source changing.
*/
triggerSourceset(src) {
if (!this.isReady_) {
// on initial ready we have to trigger source set
// 1ms after ready so that player can watch for it.
this.one('ready', () => this.setTimeout(() => this.triggerSourceset(src), 1));
}
/**
* Fired when the source is set on the tech causing the media element
* to reload.
*
* @see {@link Player#event:sourceset}
* @event Tech#sourceset
* @type {Event}
*/
this.trigger({
src,
type: 'sourceset'
});
}
/* Fallbacks for unsupported event types
================================================================================ */
/**
* Polyfill the `progress` event for browsers that don't support it natively.
*
* @see {@link Tech#trackProgress}
*/
manualProgressOn() {
this.on('durationchange', this.onDurationChange_);
this.manualProgress = true;
// Trigger progress watching when a source begins loading
this.one('ready', this.trackProgress_);
}
/**
* Turn off the polyfill for `progress` events that was created in
* {@link Tech#manualProgressOn}
*/
manualProgressOff() {
this.manualProgress = false;
this.stopTrackingProgress();
this.off('durationchange', this.onDurationChange_);
}
/**
* This is used to trigger a `progress` event when the buffered percent changes. It
* sets an interval function that will be called every 500 milliseconds to check if the
* buffer end percent has changed.
*
* > This function is called by {@link Tech#manualProgressOn}
*
* @param {Event} event
* The `ready` event that caused this to run.
*
* @listens Tech#ready
* @fires Tech#progress
*/
trackProgress(event) {
this.stopTrackingProgress();
this.progressInterval = this.setInterval(bind_(this, function () {
// Don't trigger unless buffered amount is greater than last time
const numBufferedPercent = this.bufferedPercent();
if (this.bufferedPercent_ !== numBufferedPercent) {
/**
* See {@link Player#progress}
*
* @event Tech#progress
* @type {Event}
*/
this.trigger('progress');
}
this.bufferedPercent_ = numBufferedPercent;
if (numBufferedPercent === 1) {
this.stopTrackingProgress();
}
}), 500);
}
/**
* Update our internal duration on a `durationchange` event by calling
* {@link Tech#duration}.
*
* @param {Event} event
* The `durationchange` event that caused this to run.
*
* @listens Tech#durationchange
*/
onDurationChange(event) {
this.duration_ = this.duration();
}
/**
* Get and create a `TimeRange` object for buffering.
*
* @return {TimeRange}
* The time range object that was created.
*/
buffered() {
return createTimeRanges$1(0, 0);
}
/**
* Get the percentage of the current video that is currently buffered.
*
* @return {number}
* A number from 0 to 1 that represents the decimal percentage of the
* video that is buffered.
*
*/
bufferedPercent() {
return bufferedPercent(this.buffered(), this.duration_);
}
/**
* Turn off the polyfill for `progress` events that was created in
* {@link Tech#manualProgressOn}
* Stop manually tracking progress events by clearing the interval that was set in
* {@link Tech#trackProgress}.
*/
stopTrackingProgress() {
this.clearInterval(this.progressInterval);
}
/**
* Polyfill the `timeupdate` event for browsers that don't support it.
*
* @see {@link Tech#trackCurrentTime}
*/
manualTimeUpdatesOn() {
this.manualTimeUpdates = true;
this.on('play', this.trackCurrentTime_);
this.on('pause', this.stopTrackingCurrentTime_);
}
/**
* Turn off the polyfill for `timeupdate` events that was created in
* {@link Tech#manualTimeUpdatesOn}
*/
manualTimeUpdatesOff() {
this.manualTimeUpdates = false;
this.stopTrackingCurrentTime();
this.off('play', this.trackCurrentTime_);
this.off('pause', this.stopTrackingCurrentTime_);
}
/**
* Sets up an interval function to track current time and trigger `timeupdate` every
* 250 milliseconds.
*
* @listens Tech#play
* @triggers Tech#timeupdate
*/
trackCurrentTime() {
if (this.currentTimeInterval) {
this.stopTrackingCurrentTime();
}
this.currentTimeInterval = this.setInterval(function () {
/**
* Triggered at an interval of 250ms to indicated that time is passing in the video.
*
* @event Tech#timeupdate
* @type {Event}
*/
this.trigger({
type: 'timeupdate',
target: this,
manuallyTriggered: true
});
// 42 = 24 fps // 250 is what Webkit uses // FF uses 15
}, 250);
}
/**
* Stop the interval function created in {@link Tech#trackCurrentTime} so that the
* `timeupdate` event is no longer triggered.
*
* @listens {Tech#pause}
*/
stopTrackingCurrentTime() {
this.clearInterval(this.currentTimeInterval);
// #1002 - if the video ends right before the next timeupdate would happen,
// the progress bar won't make it all the way to the end
this.trigger({
type: 'timeupdate',
target: this,
manuallyTriggered: true
});
}
/**
* Turn off all event polyfills, clear the `Tech`s {@link AudioTrackList},
* {@link VideoTrackList}, and {@link TextTrackList}, and dispose of this Tech.
*
* @fires Component#dispose
*/
dispose() {
// clear out all tracks because we can't reuse them between techs
this.clearTracks(NORMAL.names);
// Turn off any manual progress or timeupdate tracking
if (this.manualProgress) {
this.manualProgressOff();
}
if (this.manualTimeUpdates) {
this.manualTimeUpdatesOff();
}
super.dispose();
}
/**
* Clear out a single `TrackList` or an array of `TrackLists` given their names.
*
* > Note: Techs without source handlers should call this between sources for `video`
* & `audio` tracks. You don't want to use them between tracks!
*
* @param {string[]|string} types
* TrackList names to clear, valid names are `video`, `audio`, and
* `text`.
*/
clearTracks(types) {
types = [].concat(types);
// clear out all tracks because we can't reuse them between techs
types.forEach(type => {
const list = this[`${type}Tracks`]() || [];
let i = list.length;
while (i--) {
const track = list[i];
if (type === 'text') {
this.removeRemoteTextTrack(track);
}
list.removeTrack(track);
}
});
}
/**
* Remove any TextTracks added via addRemoteTextTrack that are
* flagged for automatic garbage collection
*/
cleanupAutoTextTracks() {
const list = this.autoRemoteTextTracks_ || [];
let i = list.length;
while (i--) {
const track = list[i];
this.removeRemoteTextTrack(track);
}
}
/**
* Reset the tech, which will removes all sources and reset the internal readyState.
*
* @abstract
*/
reset() {}
/**
* Get the value of `crossOrigin` from the tech.
*
* @abstract
*
* @see {Html5#crossOrigin}
*/
crossOrigin() {}
/**
* Set the value of `crossOrigin` on the tech.
*
* @abstract
*
* @param {string} crossOrigin the crossOrigin value
* @see {Html5#setCrossOrigin}
*/
setCrossOrigin() {}
/**
* Get or set an error on the Tech.
*
* @param {MediaError} [err]
* Error to set on the Tech
*
* @return {MediaError|null}
* The current error object on the tech, or null if there isn't one.
*/
error(err) {
if (err !== undefined) {
this.error_ = new MediaError(err);
this.trigger('error');
}
return this.error_;
}
/**
* Returns the `TimeRange`s that have been played through for the current source.
*
* > NOTE: This implementation is incomplete. It does not track the played `TimeRange`.
* It only checks whether the source has played at all or not.
*
* @return {TimeRange}
* - A single time range if this video has played
* - An empty set of ranges if not.
*/
played() {
if (this.hasStarted_) {
return createTimeRanges$1(0, 0);
}
return createTimeRanges$1();
}
/**
* Start playback
*
* @abstract
*
* @see {Html5#play}
*/
play() {}
/**
* Set whether we are scrubbing or not
*
* @abstract
* @param {boolean} _isScrubbing
* - true for we are currently scrubbing
* - false for we are no longer scrubbing
*
* @see {Html5#setScrubbing}
*/
setScrubbing(_isScrubbing) {}
/**
* Get whether we are scrubbing or not
*
* @abstract
*
* @see {Html5#scrubbing}
*/
scrubbing() {}
/**
* Causes a manual time update to occur if {@link Tech#manualTimeUpdatesOn} was
* previously called.
*
* @param {number} _seconds
* Set the current time of the media to this.
* @fires Tech#timeupdate
*/
setCurrentTime(_seconds) {
// improve the accuracy of manual timeupdates
if (this.manualTimeUpdates) {
/**
* A manual `timeupdate` event.
*
* @event Tech#timeupdate
* @type {Event}
*/
this.trigger({
type: 'timeupdate',
target: this,
manuallyTriggered: true
});
}
}
/**
* Turn on listeners for {@link VideoTrackList}, {@link {AudioTrackList}, and
* {@link TextTrackList} events.
*
* This adds {@link EventTarget~EventListeners} for `addtrack`, and `removetrack`.
*
* @fires Tech#audiotrackchange
* @fires Tech#videotrackchange
* @fires Tech#texttrackchange
*/
initTrackListeners() {
/**
* Triggered when tracks are added or removed on the Tech {@link AudioTrackList}
*
* @event Tech#audiotrackchange
* @type {Event}
*/
/**
* Triggered when tracks are added or removed on the Tech {@link VideoTrackList}
*
* @event Tech#videotrackchange
* @type {Event}
*/
/**
* Triggered when tracks are added or removed on the Tech {@link TextTrackList}
*
* @event Tech#texttrackchange
* @type {Event}
*/
NORMAL.names.forEach(name => {
const props = NORMAL[name];
const trackListChanges = () => {
this.trigger(`${name}trackchange`);
};
const tracks = this[props.getterName]();
tracks.addEventListener('removetrack', trackListChanges);
tracks.addEventListener('addtrack', trackListChanges);
this.on('dispose', () => {
tracks.removeEventListener('removetrack', trackListChanges);
tracks.removeEventListener('addtrack', trackListChanges);
});
});
}
/**
* Emulate TextTracks using vtt.js if necessary
*
* @fires Tech#vttjsloaded
* @fires Tech#vttjserror
*/
addWebVttScript_() {
if (window.WebVTT) {
return;
}
// Initially, Tech.el_ is a child of a dummy-div wait until the Component system
// signals that the Tech is ready at which point Tech.el_ is part of the DOM
// before inserting the WebVTT script
if (document.body.contains(this.el())) {
// load via require if available and vtt.js script location was not passed in
// as an option. novtt builds will turn the above require call into an empty object
// which will cause this if check to always fail.
if (!this.options_['vtt.js'] && isPlain(browserIndex) && Object.keys(browserIndex).length > 0) {
this.trigger('vttjsloaded');
return;
}
// load vtt.js via the script location option or the cdn of no location was
// passed in
const script = document.createElement('script');
script.src = this.options_['vtt.js'] || 'https://vjs.zencdn.net/vttjs/0.14.1/vtt.min.js';
script.onload = () => {
/**
* Fired when vtt.js is loaded.
*
* @event Tech#vttjsloaded
* @type {Event}
*/
this.trigger('vttjsloaded');
};
script.onerror = () => {
/**
* Fired when vtt.js was not loaded due to an error
*
* @event Tech#vttjsloaded
* @type {Event}
*/
this.trigger('vttjserror');
};
this.on('dispose', () => {
script.onload = null;
script.onerror = null;
});
// but have not loaded yet and we set it to true before the inject so that
// we don't overwrite the injected window.WebVTT if it loads right away
window.WebVTT = true;
this.el().parentNode.appendChild(script);
} else {
this.ready(this.addWebVttScript_);
}
}
/**
* Emulate texttracks
*
*/
emulateTextTracks() {
const tracks = this.textTracks();
const remoteTracks = this.remoteTextTracks();
const handleAddTrack = e => tracks.addTrack(e.track);
const handleRemoveTrack = e => tracks.removeTrack(e.track);
remoteTracks.on('addtrack', handleAddTrack);
remoteTracks.on('removetrack', handleRemoveTrack);
this.addWebVttScript_();
const updateDisplay = () => this.trigger('texttrackchange');
const textTracksChanges = () => {
updateDisplay();
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
track.removeEventListener('cuechange', updateDisplay);
if (track.mode === 'showing') {
track.addEventListener('cuechange', updateDisplay);
}
}
};
textTracksChanges();
tracks.addEventListener('change', textTracksChanges);
tracks.addEventListener('addtrack', textTracksChanges);
tracks.addEventListener('removetrack', textTracksChanges);
this.on('dispose', function () {
remoteTracks.off('addtrack', handleAddTrack);
remoteTracks.off('removetrack', handleRemoveTrack);
tracks.removeEventListener('change', textTracksChanges);
tracks.removeEventListener('addtrack', textTracksChanges);
tracks.removeEventListener('removetrack', textTracksChanges);
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
track.removeEventListener('cuechange', updateDisplay);
}
});
}
/**
* Create and returns a remote {@link TextTrack} object.
*
* @param {string} kind
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
*
* @param {string} [label]
* Label to identify the text track
*
* @param {string} [language]
* Two letter language abbreviation
*
* @return {TextTrack}
* The TextTrack that gets created.
*/
addTextTrack(kind, label, language) {
if (!kind) {
throw new Error('TextTrack kind is required but was not provided');
}
return createTrackHelper(this, kind, label, language);
}
/**
* Create an emulated TextTrack for use by addRemoteTextTrack
*
* This is intended to be overridden by classes that inherit from
* Tech in order to create native or custom TextTracks.
*
* @param {Object} options
* The object should contain the options to initialize the TextTrack with.
*
* @param {string} [options.kind]
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
*
* @param {string} [options.label].
* Label to identify the text track
*
* @param {string} [options.language]
* Two letter language abbreviation.
*
* @return {HTMLTrackElement}
* The track element that gets created.
*/
createRemoteTextTrack(options) {
const track = merge$2(options, {
tech: this
});
return new REMOTE.remoteTextEl.TrackClass(track);
}
/**
* Creates a remote text track object and returns an html track element.
*
* > Note: This can be an emulated {@link HTMLTrackElement} or a native one.
*
* @param {Object} options
* See {@link Tech#createRemoteTextTrack} for more detailed properties.
*
* @param {boolean} [manualCleanup=false]
* - When false: the TextTrack will be automatically removed from the video
* element whenever the source changes
* - When True: The TextTrack will have to be cleaned up manually
*
* @return {HTMLTrackElement}
* An Html Track Element.
*
*/
addRemoteTextTrack(options = {}, manualCleanup) {
const htmlTrackElement = this.createRemoteTextTrack(options);
if (typeof manualCleanup !== 'boolean') {
manualCleanup = false;
}
// store HTMLTrackElement and TextTrack to remote list
this.remoteTextTrackEls().addTrackElement_(htmlTrackElement);
this.remoteTextTracks().addTrack(htmlTrackElement.track);
if (manualCleanup === false) {
// create the TextTrackList if it doesn't exist
this.ready(() => this.autoRemoteTextTracks_.addTrack(htmlTrackElement.track));
}
return htmlTrackElement;
}
/**
* Remove a remote text track from the remote `TextTrackList`.
*
* @param {TextTrack} track
* `TextTrack` to remove from the `TextTrackList`
*/
removeRemoteTextTrack(track) {
const trackElement = this.remoteTextTrackEls().getTrackElementByTrack_(track);
// remove HTMLTrackElement and TextTrack from remote list
this.remoteTextTrackEls().removeTrackElement_(trackElement);
this.remoteTextTracks().removeTrack(track);
this.autoRemoteTextTracks_.removeTrack(track);
}
/**
* Gets available media playback quality metrics as specified by the W3C's Media
* Playback Quality API.
*
* @see [Spec]{@link https://wicg.github.io/media-playback-quality}
*
* @return {Object}
* An object with supported media playback quality metrics
*
* @abstract
*/
getVideoPlaybackQuality() {
return {};
}
/**
* Attempt to create a floating video window always on top of other windows
* so that users may continue consuming media while they interact with other
* content sites, or applications on their device.
*
* @see [Spec]{@link https://wicg.github.io/picture-in-picture}
*
* @return {Promise|undefined}
* A promise with a Picture-in-Picture window if the browser supports
* Promises (or one was passed in as an option). It returns undefined
* otherwise.
*
* @abstract
*/
requestPictureInPicture() {
return Promise.reject();
}
/**
* A method to check for the value of the 'disablePictureInPicture' property.
* Defaults to true, as it should be considered disabled if the tech does not support pip
*
* @abstract
*/
disablePictureInPicture() {
return true;
}
/**
* A method to set or unset the 'disablePictureInPicture' property.
*
* @abstract
*/
setDisablePictureInPicture() {}
/**
* A fallback implementation of requestVideoFrameCallback using requestAnimationFrame
*
* @param {function} cb
* @return {number} request id
*/
requestVideoFrameCallback(cb) {
const id = newGUID();
if (!this.isReady_ || this.paused()) {
this.queuedHanders_.add(id);
this.one('playing', () => {
if (this.queuedHanders_.has(id)) {
this.queuedHanders_.delete(id);
cb();
}
});
} else {
this.requestNamedAnimationFrame(id, cb);
}
return id;
}
/**
* A fallback implementation of cancelVideoFrameCallback
*
* @param {number} id id of callback to be cancelled
*/
cancelVideoFrameCallback(id) {
if (this.queuedHanders_.has(id)) {
this.queuedHanders_.delete(id);
} else {
this.cancelNamedAnimationFrame(id);
}
}
/**
* A method to set a poster from a `Tech`.
*
* @abstract
*/
setPoster() {}
/**
* A method to check for the presence of the 'playsinline' attribute.
*
* @abstract
*/
playsinline() {}
/**
* A method to set or unset the 'playsinline' attribute.
*
* @abstract
*/
setPlaysinline() {}
/**
* Attempt to force override of native audio tracks.
*
* @param {boolean} override - If set to true native audio will be overridden,
* otherwise native audio will potentially be used.
*
* @abstract
*/
overrideNativeAudioTracks(override) {}
/**
* Attempt to force override of native video tracks.
*
* @param {boolean} override - If set to true native video will be overridden,
* otherwise native video will potentially be used.
*
* @abstract
*/
overrideNativeVideoTracks(override) {}
/**
* Check if the tech can support the given mime-type.
*
* The base tech does not support any type, but source handlers might
* overwrite this.
*
* @param {string} _type
* The mimetype to check for support
*
* @return {string}
* 'probably', 'maybe', or empty string
*
* @see [Spec]{@link https://developer.mozilla.org/en-US/docs/Web/API/HTMLMediaElement/canPlayType}
*
* @abstract
*/
canPlayType(_type) {
return '';
}
/**
* Check if the type is supported by this tech.
*
* The base tech does not support any type, but source handlers might
* overwrite this.
*
* @param {string} _type
* The media type to check
* @return {string} Returns the native video element's response
*/
static canPlayType(_type) {
return '';
}
/**
* Check if the tech can support the given source
*
* @param {Object} srcObj
* The source object
* @param {Object} options
* The options passed to the tech
* @return {string} 'probably', 'maybe', or '' (empty string)
*/
static canPlaySource(srcObj, options) {
return Tech.canPlayType(srcObj.type);
}
/*
* Return whether the argument is a Tech or not.
* Can be passed either a Class like `Html5` or a instance like `player.tech_`
*
* @param {Object} component
* The item to check
*
* @return {boolean}
* Whether it is a tech or not
* - True if it is a tech
* - False if it is not
*/
static isTech(component) {
return component.prototype instanceof Tech || component instanceof Tech || component === Tech;
}
/**
* Registers a `Tech` into a shared list for videojs.
*
* @param {string} name
* Name of the `Tech` to register.
*
* @param {Object} tech
* The `Tech` class to register.
*/
static registerTech(name, tech) {
if (!Tech.techs_) {
Tech.techs_ = {};
}
if (!Tech.isTech(tech)) {
throw new Error(`Tech ${name} must be a Tech`);
}
if (!Tech.canPlayType) {
throw new Error('Techs must have a static canPlayType method on them');
}
if (!Tech.canPlaySource) {
throw new Error('Techs must have a static canPlaySource method on them');
}
name = toTitleCase$1(name);
Tech.techs_[name] = tech;
Tech.techs_[toLowerCase(name)] = tech;
if (name !== 'Tech') {
// camel case the techName for use in techOrder
Tech.defaultTechOrder_.push(name);
}
return tech;
}
/**
* Get a `Tech` from the shared list by name.
*
* @param {string} name
* `camelCase` or `TitleCase` name of the Tech to get
*
* @return {Tech|undefined}
* The `Tech` or undefined if there was no tech with the name requested.
*/
static getTech(name) {
if (!name) {
return;
}
if (Tech.techs_ && Tech.techs_[name]) {
return Tech.techs_[name];
}
name = toTitleCase$1(name);
if (window && window.videojs && window.videojs[name]) {
log$1.warn(`The ${name} tech was added to the videojs object when it should be registered using videojs.registerTech(name, tech)`);
return window.videojs[name];
}
}
}
/**
* Get the {@link VideoTrackList}
*
* @returns {VideoTrackList}
* @method Tech.prototype.videoTracks
*/
/**
* Get the {@link AudioTrackList}
*
* @returns {AudioTrackList}
* @method Tech.prototype.audioTracks
*/
/**
* Get the {@link TextTrackList}
*
* @returns {TextTrackList}
* @method Tech.prototype.textTracks
*/
/**
* Get the remote element {@link TextTrackList}
*
* @returns {TextTrackList}
* @method Tech.prototype.remoteTextTracks
*/
/**
* Get the remote element {@link HtmlTrackElementList}
*
* @returns {HtmlTrackElementList}
* @method Tech.prototype.remoteTextTrackEls
*/
ALL.names.forEach(function (name) {
const props = ALL[name];
Tech.prototype[props.getterName] = function () {
this[props.privateName] = this[props.privateName] || new props.ListClass();
return this[props.privateName];
};
});
/**
* List of associated text tracks
*
* @type {TextTrackList}
* @private
* @property Tech#textTracks_
*/
/**
* List of associated audio tracks.
*
* @type {AudioTrackList}
* @private
* @property Tech#audioTracks_
*/
/**
* List of associated video tracks.
*
* @type {VideoTrackList}
* @private
* @property Tech#videoTracks_
*/
/**
* Boolean indicating whether the `Tech` supports volume control.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresVolumeControl = true;
/**
* Boolean indicating whether the `Tech` supports muting volume.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresMuteControl = true;
/**
* Boolean indicating whether the `Tech` supports fullscreen resize control.
* Resizing plugins using request fullscreen reloads the plugin
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresFullscreenResize = false;
/**
* Boolean indicating whether the `Tech` supports changing the speed at which the video
* plays. Examples:
* - Set player to play 2x (twice) as fast
* - Set player to play 0.5x (half) as fast
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresPlaybackRate = false;
/**
* Boolean indicating whether the `Tech` supports the `progress` event.
* This will be used to determine if {@link Tech#manualProgressOn} should be called.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresProgressEvents = false;
/**
* Boolean indicating whether the `Tech` supports the `sourceset` event.
*
* A tech should set this to `true` and then use {@link Tech#triggerSourceset}
* to trigger a {@link Tech#event:sourceset} at the earliest time after getting
* a new source.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresSourceset = false;
/**
* Boolean indicating whether the `Tech` supports the `timeupdate` event.
* This will be used to determine if {@link Tech#manualTimeUpdates} should be called.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresTimeupdateEvents = false;
/**
* Boolean indicating whether the `Tech` supports the native `TextTrack`s.
* This will help us integrate with native `TextTrack`s if the browser supports them.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresNativeTextTracks = false;
/**
* Boolean indicating whether the `Tech` supports `requestVideoFrameCallback`.
*
* @type {boolean}
* @default
*/
Tech.prototype.featuresVideoFrameCallback = false;
/**
* A functional mixin for techs that want to use the Source Handler pattern.
* Source handlers are scripts for handling specific formats.
* The source handler pattern is used for adaptive formats (HLS, DASH) that
* manually load video data and feed it into a Source Buffer (Media Source Extensions)
* Example: `Tech.withSourceHandlers.call(MyTech);`
*
* @param {Tech} _Tech
* The tech to add source handler functions to.
*
* @mixes Tech~SourceHandlerAdditions
*/
Tech.withSourceHandlers = function (_Tech) {
/**
* Register a source handler
*
* @param {Function} handler
* The source handler class
*
* @param {number} [index]
* Register it at the following index
*/
_Tech.registerSourceHandler = function (handler, index) {
let handlers = _Tech.sourceHandlers;
if (!handlers) {
handlers = _Tech.sourceHandlers = [];
}
if (index === undefined) {
// add to the end of the list
index = handlers.length;
}
handlers.splice(index, 0, handler);
};
/**
* Check if the tech can support the given type. Also checks the
* Techs sourceHandlers.
*
* @param {string} type
* The mimetype to check.
*
* @return {string}
* 'probably', 'maybe', or '' (empty string)
*/
_Tech.canPlayType = function (type) {
const handlers = _Tech.sourceHandlers || [];
let can;
for (let i = 0; i < handlers.length; i++) {
can = handlers[i].canPlayType(type);
if (can) {
return can;
}
}
return '';
};
/**
* Returns the first source handler that supports the source.
*
* TODO: Answer question: should 'probably' be prioritized over 'maybe'
*
* @param {SourceObject} source
* The source object
*
* @param {Object} options
* The options passed to the tech
*
* @return {SourceHandler|null}
* The first source handler that supports the source or null if
* no SourceHandler supports the source
*/
_Tech.selectSourceHandler = function (source, options) {
const handlers = _Tech.sourceHandlers || [];
let can;
for (let i = 0; i < handlers.length; i++) {
can = handlers[i].canHandleSource(source, options);
if (can) {
return handlers[i];
}
}
return null;
};
/**
* Check if the tech can support the given source.
*
* @param {SourceObject} srcObj
* The source object
*
* @param {Object} options
* The options passed to the tech
*
* @return {string}
* 'probably', 'maybe', or '' (empty string)
*/
_Tech.canPlaySource = function (srcObj, options) {
const sh = _Tech.selectSourceHandler(srcObj, options);
if (sh) {
return sh.canHandleSource(srcObj, options);
}
return '';
};
/**
* When using a source handler, prefer its implementation of
* any function normally provided by the tech.
*/
const deferrable = ['seekable', 'seeking', 'duration'];
/**
* A wrapper around {@link Tech#seekable} that will call a `SourceHandler`s seekable
* function if it exists, with a fallback to the Techs seekable function.
*
* @method _Tech.seekable
*/
/**
* A wrapper around {@link Tech#duration} that will call a `SourceHandler`s duration
* function if it exists, otherwise it will fallback to the techs duration function.
*
* @method _Tech.duration
*/
deferrable.forEach(function (fnName) {
const originalFn = this[fnName];
if (typeof originalFn !== 'function') {
return;
}
this[fnName] = function () {
if (this.sourceHandler_ && this.sourceHandler_[fnName]) {
return this.sourceHandler_[fnName].apply(this.sourceHandler_, arguments);
}
return originalFn.apply(this, arguments);
};
}, _Tech.prototype);
/**
* Create a function for setting the source using a source object
* and source handlers.
* Should never be called unless a source handler was found.
*
* @param {SourceObject} source
* A source object with src and type keys
*/
_Tech.prototype.setSource = function (source) {
let sh = _Tech.selectSourceHandler(source, this.options_);
if (!sh) {
// Fall back to a native source handler when unsupported sources are
// deliberately set
if (_Tech.nativeSourceHandler) {
sh = _Tech.nativeSourceHandler;
} else {
log$1.error('No source handler found for the current source.');
}
}
// Dispose any existing source handler
this.disposeSourceHandler();
this.off('dispose', this.disposeSourceHandler_);
if (sh !== _Tech.nativeSourceHandler) {
this.currentSource_ = source;
}
this.sourceHandler_ = sh.handleSource(source, this, this.options_);
this.one('dispose', this.disposeSourceHandler_);
};
/**
* Clean up any existing SourceHandlers and listeners when the Tech is disposed.
*
* @listens Tech#dispose
*/
_Tech.prototype.disposeSourceHandler = function () {
// if we have a source and get another one
// then we are loading something new
// than clear all of our current tracks
if (this.currentSource_) {
this.clearTracks(['audio', 'video']);
this.currentSource_ = null;
}
// always clean up auto-text tracks
this.cleanupAutoTextTracks();
if (this.sourceHandler_) {
if (this.sourceHandler_.dispose) {
this.sourceHandler_.dispose();
}
this.sourceHandler_ = null;
}
};
};
// The base Tech class needs to be registered as a Component. It is the only
// Tech that can be registered as a Component.
Component$1.registerComponent('Tech', Tech);
Tech.registerTech('Tech', Tech);
/**
* A list of techs that should be added to techOrder on Players
*
* @private
*/
Tech.defaultTechOrder_ = [];
/**
* @file middleware.js
* @module middleware
*/
/** @import Player from '../player' */
/** @import Tech from '../tech/tech' */
const middlewares = {};
const middlewareInstances = {};
const TERMINATOR = {};
/**
* A middleware object is a plain JavaScript object that has methods that
* match the {@link Tech} methods found in the lists of allowed
* {@link module:middleware.allowedGetters|getters},
* {@link module:middleware.allowedSetters|setters}, and
* {@link module:middleware.allowedMediators|mediators}.
*
* @typedef {Object} MiddlewareObject
*/
/**
* A middleware factory function that should return a
* {@link module:middleware~MiddlewareObject|MiddlewareObject}.
*
* This factory will be called for each player when needed, with the player
* passed in as an argument.
*
* @callback MiddlewareFactory
* @param {Player} player
* A Video.js player.
*/
/**
* Define a middleware that the player should use by way of a factory function
* that returns a middleware object.
*
* @param {string} type
* The MIME type to match or `"*"` for all MIME types.
*
* @param {MiddlewareFactory} middleware
* A middleware factory function that will be executed for
* matching types.
*/
function use(type, middleware) {
middlewares[type] = middlewares[type] || [];
middlewares[type].push(middleware);
}
/**
* Asynchronously sets a source using middleware by recursing through any
* matching middlewares and calling `setSource` on each, passing along the
* previous returned value each time.
*
* @param {Player} player
* A {@link Player} instance.
*
* @param {Tech~SourceObject} src
* A source object.
*
* @param {Function}
* The next middleware to run.
*/
function setSource(player, src, next) {
player.setTimeout(() => setSourceHelper(src, middlewares[src.type], next, player), 1);
}
/**
* When the tech is set, passes the tech to each middleware's `setTech` method.
*
* @param {Object[]} middleware
* An array of middleware instances.
*
* @param {Tech} tech
* A Video.js tech.
*/
function setTech(middleware, tech) {
middleware.forEach(mw => mw.setTech && mw.setTech(tech));
}
/**
* Calls a getter on the tech first, through each middleware
* from right to left to the player.
*
* @param {Object[]} middleware
* An array of middleware instances.
*
* @param {Tech} tech
* The current tech.
*
* @param {string} method
* A method name.
*
* @return {*}
* The final value from the tech after middleware has intercepted it.
*/
function get(middleware, tech, method) {
return middleware.reduceRight(middlewareIterator(method), tech[method]());
}
/**
* Takes the argument given to the player and calls the setter method on each
* middleware from left to right to the tech.
*
* @param {Object[]} middleware
* An array of middleware instances.
*
* @param {Tech} tech
* The current tech.
*
* @param {string} method
* A method name.
*
* @param {*} arg
* The value to set on the tech.
*
* @return {*}
* The return value of the `method` of the `tech`.
*/
function set(middleware, tech, method, arg) {
return tech[method](middleware.reduce(middlewareIterator(method), arg));
}
/**
* Takes the argument given to the player and calls the `call` version of the
* method on each middleware from left to right.
*
* Then, call the passed in method on the tech and return the result unchanged
* back to the player, through middleware, this time from right to left.
*
* @param {Object[]} middleware
* An array of middleware instances.
*
* @param {Tech} tech
* The current tech.
*
* @param {string} method
* A method name.
*
* @param {*} arg
* The value to set on the tech.
*
* @return {*}
* The return value of the `method` of the `tech`, regardless of the
* return values of middlewares.
*/
function mediate(middleware, tech, method, arg = null) {
const callMethod = 'call' + toTitleCase$1(method);
const middlewareValue = middleware.reduce(middlewareIterator(callMethod), arg);
const terminated = middlewareValue === TERMINATOR;
// deprecated. The `null` return value should instead return TERMINATOR to
// prevent confusion if a techs method actually returns null.
const returnValue = terminated ? null : tech[method](middlewareValue);
executeRight(middleware, method, returnValue, terminated);
return returnValue;
}
/**
* Enumeration of allowed getters where the keys are method names.
*
* @type {Object}
*/
const allowedGetters = {
buffered: 1,
currentTime: 1,
duration: 1,
muted: 1,
played: 1,
paused: 1,
seekable: 1,
volume: 1,
ended: 1
};
/**
* Enumeration of allowed setters where the keys are method names.
*
* @type {Object}
*/
const allowedSetters = {
setCurrentTime: 1,
setMuted: 1,
setVolume: 1
};
/**
* Enumeration of allowed mediators where the keys are method names.
*
* @type {Object}
*/
const allowedMediators = {
play: 1,
pause: 1
};
function middlewareIterator(method) {
return (value, mw) => {
// if the previous middleware terminated, pass along the termination
if (value === TERMINATOR) {
return TERMINATOR;
}
if (mw[method]) {
return mw[method](value);
}
return value;
};
}
function executeRight(mws, method, value, terminated) {
for (let i = mws.length - 1; i >= 0; i--) {
const mw = mws[i];
if (mw[method]) {
mw[method](terminated, value);
}
}
}
/**
* Clear the middleware cache for a player.
*
* @param {Player} player
* A {@link Player} instance.
*/
function clearCacheForPlayer(player) {
if (middlewareInstances.hasOwnProperty(player.id())) {
delete middlewareInstances[player.id()];
}
}
/**
* {
* [playerId]: [[mwFactory, mwInstance], ...]
* }
*
* @private
*/
function getOrCreateFactory(player, mwFactory) {
const mws = middlewareInstances[player.id()];
let mw = null;
if (mws === undefined || mws === null) {
mw = mwFactory(player);
middlewareInstances[player.id()] = [[mwFactory, mw]];
return mw;
}
for (let i = 0; i < mws.length; i++) {
const [mwf, mwi] = mws[i];
if (mwf !== mwFactory) {
continue;
}
mw = mwi;
}
if (mw === null) {
mw = mwFactory(player);
mws.push([mwFactory, mw]);
}
return mw;
}
function setSourceHelper(src = {}, middleware = [], next, player, acc = [], lastRun = false) {
const [mwFactory, ...mwrest] = middleware;
// if mwFactory is a string, then we're at a fork in the road
if (typeof mwFactory === 'string') {
setSourceHelper(src, middlewares[mwFactory], next, player, acc, lastRun);
// if we have an mwFactory, call it with the player to get the mw,
// then call the mw's setSource method
} else if (mwFactory) {
const mw = getOrCreateFactory(player, mwFactory);
// if setSource isn't present, implicitly select this middleware
if (!mw.setSource) {
acc.push(mw);
return setSourceHelper(src, mwrest, next, player, acc, lastRun);
}
mw.setSource(Object.assign({}, src), function (err, _src) {
// something happened, try the next middleware on the current level
// make sure to use the old src
if (err) {
return setSourceHelper(src, mwrest, next, player, acc, lastRun);
}
// we've succeeded, now we need to go deeper
acc.push(mw);
// if it's the same type, continue down the current chain
// otherwise, we want to go down the new chain
setSourceHelper(_src, src.type === _src.type ? mwrest : middlewares[_src.type], next, player, acc, lastRun);
});
} else if (mwrest.length) {
setSourceHelper(src, mwrest, next, player, acc, lastRun);
} else if (lastRun) {
next(src, acc);
} else {
setSourceHelper(src, middlewares['*'], next, player, acc, true);
}
}
/** @import Player from '../player' */
/**
* Mimetypes
*
* @see https://www.iana.org/assignments/media-types/media-types.xhtml
* @typedef Mimetypes~Kind
* @enum
*/
const MimetypesKind = {
opus: 'video/ogg',
ogv: 'video/ogg',
mp4: 'video/mp4',
mov: 'video/mp4',
m4v: 'video/mp4',
mkv: 'video/x-matroska',
m4a: 'audio/mp4',
mp3: 'audio/mpeg',
aac: 'audio/aac',
caf: 'audio/x-caf',
flac: 'audio/flac',
oga: 'audio/ogg',
wav: 'audio/wav',
m3u8: 'application/x-mpegURL',
mpd: 'application/dash+xml',
jpg: 'image/jpeg',
jpeg: 'image/jpeg',
gif: 'image/gif',
png: 'image/png',
svg: 'image/svg+xml',
webp: 'image/webp'
};
/**
* Get the mimetype of a given src url if possible
*
* @param {string} src
* The url to the src
*
* @return {string}
* return the mimetype if it was known or empty string otherwise
*/
const getMimetype = function (src = '') {
const ext = getFileExtension(src);
const mimetype = MimetypesKind[ext.toLowerCase()];
return mimetype || '';
};
/**
* Find the mime type of a given source string if possible. Uses the player
* source cache.
*
* @param {Player} player
* The player object
*
* @param {string} src
* The source string
*
* @return {string}
* The type that was found
*/
const findMimetype = (player, src) => {
if (!src) {
return '';
}
// 1. check for the type in the `source` cache
if (player.cache_.source.src === src && player.cache_.source.type) {
return player.cache_.source.type;
}
// 2. see if we have this source in our `currentSources` cache
const matchingSources = player.cache_.sources.filter(s => s.src === src);
if (matchingSources.length) {
return matchingSources[0].type;
}
// 3. look for the src url in source elements and use the type there
const sources = player.$$('source');
for (let i = 0; i < sources.length; i++) {
const s = sources[i];
if (s.type && s.src && s.src === src) {
return s.type;
}
}
// 4. finally fallback to our list of mime types based on src url extension
return getMimetype(src);
};
/**
* @module filter-source
*/
/**
* Filter out single bad source objects or multiple source objects in an
* array. Also flattens nested source object arrays into a 1 dimensional
* array of source objects.
*
* @param {Tech~SourceObject|Tech~SourceObject[]} src
* The src object to filter
*
* @return {Tech~SourceObject[]}
* An array of sourceobjects containing only valid sources
*
* @private
*/
const filterSource = function (src) {
// traverse array
if (Array.isArray(src)) {
let newsrc = [];
src.forEach(function (srcobj) {
srcobj = filterSource(srcobj);
if (Array.isArray(srcobj)) {
newsrc = newsrc.concat(srcobj);
} else if (isObject$1(srcobj)) {
newsrc.push(srcobj);
}
});
src = newsrc;
} else if (typeof src === 'string' && src.trim()) {
// convert string into object
src = [fixSource({
src
})];
} else if (isObject$1(src) && typeof src.src === 'string' && src.src && src.src.trim()) {
// src is already valid
src = [fixSource(src)];
} else {
// invalid source, turn it into an empty array
src = [];
}
return src;
};
/**
* Checks src mimetype, adding it when possible
*
* @param {Tech~SourceObject} src
* The src object to check
* @return {Tech~SourceObject}
* src Object with known type
*/
function fixSource(src) {
if (!src.type) {
const mimetype = getMimetype(src.src);
if (mimetype) {
src.type = mimetype;
}
}
return src;
}
var icons = "\n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n \n ";
// /**
// Determine the keycode for the 'back' key based on the platform
const backKeyCode = IS_TIZEN ? 10009 : IS_WEBOS ? 461 : 8;
const SpatialNavKeyCodes = {
codes: {
play: 415,
pause: 19,
ff: 417,
rw: 412,
back: backKeyCode
},
names: {
415: 'play',
19: 'pause',
417: 'ff',
412: 'rw',
[backKeyCode]: 'back'
},
isEventKey(event, keyName) {
keyName = keyName.toLowerCase();
if (this.names[event.keyCode] && this.names[event.keyCode] === keyName) {
return true;
}
return false;
},
getEventName(event) {
if (this.names[event.keyCode]) {
return this.names[event.keyCode];
} else if (this.codes[event.code]) {
const code = this.codes[event.code];
return this.names[code];
}
return null;
}
};
/**
* @file spatial-navigation.js
*/
/** @import Component from './component' */
/** @import Player from './player' */
// The number of seconds the `step*` functions move the timeline.
const STEP_SECONDS$1 = 5;
/**
* Spatial Navigation in Video.js enhances user experience and accessibility on smartTV devices,
* enabling seamless navigation through interactive elements within the player using remote control arrow keys.
* This functionality allows users to effortlessly navigate through focusable components.
*
* @extends EventTarget
*/
class SpatialNavigation extends EventTarget$2 {
/**
* Constructs a SpatialNavigation instance with initial settings.
* Sets up the player instance, and prepares the spatial navigation system.
*
* @class
* @param {Player} player - The Video.js player instance to which the spatial navigation is attached.
*/
constructor(player) {
super();
this.player_ = player;
this.focusableComponents = [];
this.isListening_ = false;
this.isPaused_ = false;
this.onKeyDown_ = this.onKeyDown_.bind(this);
this.lastFocusedComponent_ = null;
}
/**
* Starts the spatial navigation by adding a keydown event listener to the video container.
* This method ensures that the event listener is added only once.
*/
start() {
// If the listener is already active, exit early.
if (this.isListening_) {
return;
}
// Add the event listener since the listener is not yet active.
this.player_.on('keydown', this.onKeyDown_);
this.player_.on('modalKeydown', this.onKeyDown_);
// Listen for source change events
this.player_.on('loadedmetadata', () => {
this.focus(this.updateFocusableComponents()[0]);
});
this.player_.on('modalclose', () => {
this.refocusComponent();
});
this.player_.on('focusin', this.handlePlayerFocus_.bind(this));
this.player_.on('focusout', this.handlePlayerBlur_.bind(this));
this.isListening_ = true;
if (this.player_.errorDisplay) {
this.player_.errorDisplay.on('aftermodalfill', () => {
this.updateFocusableComponents();
if (this.focusableComponents.length) {
// The modal has focusable components:
if (this.focusableComponents.length > 1) {
// The modal has close button + some additional buttons.
// Focusing first additional button:
this.focusableComponents[1].focus();
} else {
// The modal has only close button,
// Focusing it:
this.focusableComponents[0].focus();
}
}
});
}
}
/**
* Stops the spatial navigation by removing the keydown event listener from the video container.
* Also sets the `isListening_` flag to false.
*/
stop() {
this.player_.off('keydown', this.onKeyDown_);
this.isListening_ = false;
}
/**
* Responds to keydown events for spatial navigation and media control.
*
* Determines if spatial navigation or media control is active and handles key inputs accordingly.
*
* @param {KeyboardEvent} event - The keydown event to be handled.
*/
onKeyDown_(event) {
// Determine if the event is a custom modalKeydown event
const actualEvent = event.originalEvent ? event.originalEvent : event;
if (['ArrowLeft', 'ArrowRight', 'ArrowUp', 'ArrowDown'].includes(actualEvent.key)) {
// Handle directional navigation
if (this.isPaused_) {
return;
}
actualEvent.preventDefault();
// "ArrowLeft" => "left" etc
const direction = actualEvent.key.substring(5).toLowerCase();
this.move(direction);
} else if (SpatialNavKeyCodes.isEventKey(actualEvent, 'play') || SpatialNavKeyCodes.isEventKey(actualEvent, 'pause') || SpatialNavKeyCodes.isEventKey(actualEvent, 'ff') || SpatialNavKeyCodes.isEventKey(actualEvent, 'rw')) {
// Handle media actions
actualEvent.preventDefault();
const action = SpatialNavKeyCodes.getEventName(actualEvent);
this.performMediaAction_(action);
} else if (SpatialNavKeyCodes.isEventKey(actualEvent, 'Back') && event.target && event.target.closeable()) {
actualEvent.preventDefault();
event.target.close();
}
}
/**
* Performs media control actions based on the given key input.
*
* Controls the playback and seeking functionalities of the media player.
*
* @param {string} key - The key representing the media action to be performed.
* Accepted keys: 'play', 'pause', 'ff' (fast-forward), 'rw' (rewind).
*/
performMediaAction_(key) {
if (this.player_) {
switch (key) {
case 'play':
if (this.player_.paused()) {
this.player_.play();
}
break;
case 'pause':
if (!this.player_.paused()) {
this.player_.pause();
}
break;
case 'ff':
this.userSeek_(this.player_.currentTime() + STEP_SECONDS$1);
break;
case 'rw':
this.userSeek_(this.player_.currentTime() - STEP_SECONDS$1);
break;
}
}
}
/**
* Prevent liveThreshold from causing seeks to seem like they
* are not happening from a user perspective.
*
* @param {number} ct
* current time to seek to
*/
userSeek_(ct) {
if (this.player_.liveTracker && this.player_.liveTracker.isLive()) {
this.player_.liveTracker.nextSeekedFromUser();
}
this.player_.currentTime(ct);
}
/**
* Pauses the spatial navigation functionality.
* This method sets a flag that can be used to temporarily disable the navigation logic.
*/
pause() {
this.isPaused_ = true;
}
/**
* Resumes the spatial navigation functionality if it has been paused.
* This method resets the pause flag, re-enabling the navigation logic.
*/
resume() {
this.isPaused_ = false;
}
/**
* Handles Player Blur.
*
* @param {string|Event|Object} event
* The name of the event, an `Event`, or an object with a key of type set to
* an event name.
*
* Calls for handling of the Player Blur if:
* *The next focused element is not a child of current focused element &
* The next focused element is not a child of the Player.
* *There is no next focused element
*/
handlePlayerBlur_(event) {
const nextFocusedElement = event.relatedTarget;
let isChildrenOfPlayer = null;
const currentComponent = this.getCurrentComponent(event.target);
if (nextFocusedElement) {
isChildrenOfPlayer = Boolean(nextFocusedElement.closest('.video-js'));
// If nextFocusedElement is the 'TextTrackSettings' component
if (nextFocusedElement.classList.contains('vjs-text-track-settings') && !this.isPaused_) {
this.searchForTrackSelect_();
}
}
if (!event.currentTarget.contains(event.relatedTarget) && !isChildrenOfPlayer || !nextFocusedElement) {
if (currentComponent && currentComponent.name() === 'CloseButton') {
this.refocusComponent();
} else {
this.pause();
if (currentComponent && currentComponent.el()) {
// Store last focused component
this.lastFocusedComponent_ = currentComponent;
}
}
}
}
/**
* Handles the Player focus event.
*
* Calls for handling of the Player Focus if current element is focusable.
*/
handlePlayerFocus_() {
if (this.getCurrentComponent() && this.getCurrentComponent().getIsFocusable()) {
this.resume();
}
}
/**
* Gets a set of focusable components.
*
* @return {Array}
* Returns an array of focusable components.
*/
updateFocusableComponents() {
const player = this.player_;
const focusableComponents = [];
/**
* Searches for children candidates.
*
* Pushes Components to array of 'focusableComponents'.
* Calls itself if there is children elements inside iterated component.
*
* @param {Array} componentsArray - The array of components to search for focusable children.
*/
function searchForChildrenCandidates(componentsArray) {
for (const i of componentsArray) {
if (i.hasOwnProperty('el_') && i.getIsFocusable() && i.getIsAvailableToBeFocused(i.el())) {
focusableComponents.push(i);
}
if (i.hasOwnProperty('children_') && i.children_.length > 0) {
searchForChildrenCandidates(i.children_);
}
}
}
// Iterate inside all children components of the player.
player.children_.forEach(value => {
if (value.hasOwnProperty('el_')) {
// If component has required functions 'getIsFocusable' & 'getIsAvailableToBeFocused', is focusable & available to be focused.
if (value.getIsFocusable && value.getIsAvailableToBeFocused && value.getIsFocusable() && value.getIsAvailableToBeFocused(value.el())) {
focusableComponents.push(value);
return;
// If component has posible children components as candidates.
} else if (value.hasOwnProperty('children_') && value.children_.length > 0) {
searchForChildrenCandidates(value.children_);
// If component has posible item components as candidates.
} else if (value.hasOwnProperty('items') && value.items.length > 0) {
searchForChildrenCandidates(value.items);
// If there is a suitable child element within the component's DOM element.
} else if (this.findSuitableDOMChild(value)) {
focusableComponents.push(value);
}
}
// TODO - Refactor the following logic after refactor of videojs-errors elements to be components is done.
if (value.name_ === 'ErrorDisplay' && value.opened_) {
const buttonContainer = value.el_.querySelector('.vjs-errors-ok-button-container');
if (buttonContainer) {
const modalButtons = buttonContainer.querySelectorAll('button');
modalButtons.forEach((element, index) => {
// Add elements as objects to be handled by the spatial navigation
focusableComponents.push({
name: () => {
return 'ModalButton' + (index + 1);
},
el: () => element,
getPositions: () => {
const rect = element.getBoundingClientRect();
// Creating objects that mirror DOMRectReadOnly for boundingClientRect and center
const boundingClientRect = {
x: rect.x,
y: rect.y,
width: rect.width,
height: rect.height,
top: rect.top,
right: rect.right,
bottom: rect.bottom,
left: rect.left
};
// Calculating the center position
const center = {
x: rect.left + rect.width / 2,
y: rect.top + rect.height / 2,
width: 0,
height: 0,
top: rect.top + rect.height / 2,
right: rect.left + rect.width / 2,
bottom: rect.top + rect.height / 2,
left: rect.left + rect.width / 2
};
return {
boundingClientRect,
center
};
},
// Asume that the following are always focusable
getIsAvailableToBeFocused: () => true,
getIsFocusable: el => true,
focus: () => element.focus()
});
});
}
}
});
this.focusableComponents = focusableComponents;
return this.focusableComponents;
}
/**
* Finds a suitable child element within the provided component's DOM element.
*
* @param {Object} component - The component containing the DOM element to search within.
* @return {HTMLElement|null} Returns the suitable child element if found, or null if not found.
*/
findSuitableDOMChild(component) {
/**
* Recursively searches for a suitable child node that can be focused within a given component.
* It first checks if the provided node itself can be focused according to the component's
* `getIsFocusable` and `getIsAvailableToBeFocused` methods. If not, it recursively searches
* through the node's children to find a suitable child node that meets the focusability criteria.
*
* @param {HTMLElement} node - The DOM node to start the search from.
* @return {HTMLElement|null} The first child node that is focusable and available to be focused,
* or `null` if no suitable child is found.
*/
function searchForSuitableChild(node) {
if (component.getIsFocusable(node) && component.getIsAvailableToBeFocused(node)) {
return node;
}
for (let i = 0; i < node.children.length; i++) {
const child = node.children[i];
const suitableChild = searchForSuitableChild(child);
if (suitableChild) {
return suitableChild;
}
}
return null;
}
if (component.el()) {
return searchForSuitableChild(component.el());
}
return null;
}
/**
* Gets the currently focused component from the list of focusable components.
* If a target element is provided, it uses that element to find the corresponding
* component. If no target is provided, it defaults to using the document's currently
* active element.
*
* @param {HTMLElement} [target] - The DOM element to check against the focusable components.
* If not provided, `document.activeElement` is used.
* @return {Component|null} - Returns the focused component if found among the focusable components,
* otherwise returns null if no matching component is found.
*/
getCurrentComponent(target) {
this.updateFocusableComponents();
// eslint-disable-next-line
const curComp = target || document.activeElement;
if (this.focusableComponents.length) {
for (const i of this.focusableComponents) {
// If component Node is equal to the current active element.
if (i.el() === curComp) {
return i;
}
}
}
}
/**
* Adds a component to the array of focusable components.
*
* @param {Component} component
* The `Component` to be added.
*/
add(component) {
const focusableComponents = [...this.focusableComponents];
if (component.hasOwnProperty('el_') && component.getIsFocusable() && component.getIsAvailableToBeFocused(component.el())) {
focusableComponents.push(component);
}
this.focusableComponents = focusableComponents;
// Trigger the notification manually
this.trigger({
type: 'focusableComponentsChanged',
focusableComponents: this.focusableComponents
});
}
/**
* Removes component from the array of focusable components.
*
* @param {Component} component - The component to be removed from the focusable components array.
*/
remove(component) {
for (let i = 0; i < this.focusableComponents.length; i++) {
if (this.focusableComponents[i].name() === component.name()) {
this.focusableComponents.splice(i, 1);
// Trigger the notification manually
this.trigger({
type: 'focusableComponentsChanged',
focusableComponents: this.focusableComponents
});
return;
}
}
}
/**
* Clears array of focusable components.
*/
clear() {
// Check if the array is already empty to avoid unnecessary event triggering
if (this.focusableComponents.length > 0) {
// Clear the array
this.focusableComponents = [];
// Trigger the notification manually
this.trigger({
type: 'focusableComponentsChanged',
focusableComponents: this.focusableComponents
});
}
}
/**
* Navigates to the next focusable component based on the specified direction.
*
* @param {string} direction 'up', 'down', 'left', 'right'
*/
move(direction) {
const currentFocusedComponent = this.getCurrentComponent();
if (!currentFocusedComponent) {
return;
}
const currentPositions = currentFocusedComponent.getPositions();
const candidates = this.focusableComponents.filter(component => component !== currentFocusedComponent && this.isInDirection_(currentPositions.boundingClientRect, component.getPositions().boundingClientRect, direction));
const bestCandidate = this.findBestCandidate_(currentPositions.center, candidates, direction);
if (bestCandidate) {
this.focus(bestCandidate);
} else {
this.trigger({
type: 'endOfFocusableComponents',
direction,
focusedComponent: currentFocusedComponent
});
}
}
/**
* Finds the best candidate on the current center position,
* the list of candidates, and the specified navigation direction.
*
* @param {Object} currentCenter The center position of the current focused component element.
* @param {Array} candidates An array of candidate components to receive focus.
* @param {string} direction The direction of navigation ('up', 'down', 'left', 'right').
* @return {Object|null} The component that is the best candidate for receiving focus.
*/
findBestCandidate_(currentCenter, candidates, direction) {
let minDistance = Infinity;
let bestCandidate = null;
for (const candidate of candidates) {
const candidateCenter = candidate.getPositions().center;
const distance = this.calculateDistance_(currentCenter, candidateCenter, direction);
if (distance < minDistance) {
minDistance = distance;
bestCandidate = candidate;
}
}
return bestCandidate;
}
/**
* Determines if a target rectangle is in the specified navigation direction
* relative to a source rectangle.
*
* @param {Object} srcRect The bounding rectangle of the source element.
* @param {Object} targetRect The bounding rectangle of the target element.
* @param {string} direction The navigation direction ('up', 'down', 'left', 'right').
* @return {boolean} True if the target is in the specified direction relative to the source.
*/
isInDirection_(srcRect, targetRect, direction) {
switch (direction) {
case 'right':
return targetRect.left >= srcRect.right;
case 'left':
return targetRect.right <= srcRect.left;
case 'down':
return targetRect.top >= srcRect.bottom;
case 'up':
return targetRect.bottom <= srcRect.top;
default:
return false;
}
}
/**
* Focus the last focused component saved before blur on player.
*/
refocusComponent() {
if (this.lastFocusedComponent_) {
// If user is not active, set it to active.
if (!this.player_.userActive()) {
this.player_.userActive(true);
}
this.updateFocusableComponents();
// Search inside array of 'focusableComponents' for a match of name of
// the last focused component.
for (let i = 0; i < this.focusableComponents.length; i++) {
if (this.focusableComponents[i].name() === this.lastFocusedComponent_.name()) {
this.focus(this.focusableComponents[i]);
return;
}
}
} else {
this.focus(this.updateFocusableComponents()[0]);
}
}
/**
* Focuses on a given component.
* If the component is available to be focused, it focuses on the component.
* If not, it attempts to find a suitable DOM child within the component and focuses on it.
*
* @param {Component} component - The component to be focused.
*/
focus(component) {
if (typeof component !== 'object') {
return;
}
if (component.getIsAvailableToBeFocused(component.el())) {
component.focus();
} else if (this.findSuitableDOMChild(component)) {
this.findSuitableDOMChild(component).focus();
}
}
/**
* Calculates the distance between two points, adjusting the calculation based on
* the specified navigation direction.
*
* @param {Object} center1 The center point of the first element.
* @param {Object} center2 The center point of the second element.
* @param {string} direction The direction of navigation ('up', 'down', 'left', 'right').
* @return {number} The calculated distance between the two centers.
*/
calculateDistance_(center1, center2, direction) {
const dx = Math.abs(center1.x - center2.x);
const dy = Math.abs(center1.y - center2.y);
let distance;
switch (direction) {
case 'right':
case 'left':
// Higher weight for vertical distance in horizontal navigation.
distance = dx + dy * 100;
break;
case 'up':
// Strongly prioritize vertical proximity for UP navigation.
// Adjust the weight to ensure that elements directly above are favored.
distance = dy * 2 + dx * 0.5;
break;
case 'down':
// More balanced weight for vertical and horizontal distances.
// Adjust the weights here to find the best balance.
distance = dy * 5 + dx;
break;
default:
distance = dx + dy;
}
return distance;
}
/**
* This gets called by 'handlePlayerBlur_' if 'spatialNavigation' is enabled.
* Searches for the first 'TextTrackSelect' inside of modal to focus.
*
* @private
*/
searchForTrackSelect_() {
const spatialNavigation = this;
for (const component of spatialNavigation.updateFocusableComponents()) {
if (component.constructor.name === 'TextTrackSelect') {
spatialNavigation.focus(component);
break;
}
}
}
}
/**
* @file loader.js
*/
/** @import Player from '../player' */
/**
* The `MediaLoader` is the `Component` that decides which playback technology to load
* when a player is initialized.
*
* @extends Component
*/
class MediaLoader extends Component$1 {
/**
* Create an instance of this class.
*
* @param {Player} player
* The `Player` that this class should attach to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function that is run when this component is ready.
*/
constructor(player, options, ready) {
// MediaLoader has no element
const options_ = merge$2({
createEl: false
}, options);
super(player, options_, ready);
// If there are no sources when the player is initialized,
// load the first supported playback technology.
if (!options.playerOptions.sources || options.playerOptions.sources.length === 0) {
for (let i = 0, j = options.playerOptions.techOrder; i < j.length; i++) {
const techName = toTitleCase$1(j[i]);
let tech = Tech.getTech(techName);
// Support old behavior of techs being registered as components.
// Remove once that deprecated behavior is removed.
if (!techName) {
tech = Component$1.getComponent(techName);
}
// Check if the browser supports this technology
if (tech && tech.isSupported()) {
player.loadTech_(techName);
break;
}
}
} else {
// Loop through playback technologies (e.g. HTML5) and check for support.
// Then load the best source.
// A few assumptions here:
// All playback technologies respect preload false.
player.src(options.playerOptions.sources);
}
}
}
Component$1.registerComponent('MediaLoader', MediaLoader);
/**
* @file clickable-component.js
*/
/** @import Player from './player' */
/**
* Component which is clickable or keyboard actionable, but is not a
* native HTML button.
*
* @extends Component
*/
class ClickableComponent extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of component options.
*
* @param {function} [options.clickHandler]
* The function to call when the button is clicked / activated
*
* @param {string} [options.controlText]
* The text to set on the button
*
* @param {string} [options.className]
* A class or space separated list of classes to add the component
*
*/
constructor(player, options) {
super(player, options);
if (this.options_.controlText) {
this.controlText(this.options_.controlText);
}
this.handleMouseOver_ = e => this.handleMouseOver(e);
this.handleMouseOut_ = e => this.handleMouseOut(e);
this.handleClick_ = e => this.handleClick(e);
this.handleKeyDown_ = e => this.handleKeyDown(e);
this.emitTapEvents();
this.enable();
}
/**
* Create the `ClickableComponent`s DOM element.
*
* @param {string} [tag=div]
* The element's node type.
*
* @param {Object} [props={}]
* An object of properties that should be set on the element.
*
* @param {Object} [attributes={}]
* An object of attributes that should be set on the element.
*
* @return {Element}
* The element that gets created.
*/
createEl(tag = 'div', props = {}, attributes = {}) {
props = Object.assign({
className: this.buildCSSClass(),
tabIndex: 0
}, props);
if (tag === 'button') {
log$1.error(`Creating a ClickableComponent with an HTML element of ${tag} is not supported; use a Button instead.`);
}
// Add ARIA attributes for clickable element which is not a native HTML button
attributes = Object.assign({
role: 'button'
}, attributes);
this.tabIndex_ = props.tabIndex;
const el = createEl(tag, props, attributes);
if (!this.player_.options_.experimentalSvgIcons) {
el.appendChild(createEl('span', {
className: 'vjs-icon-placeholder'
}, {
'aria-hidden': true
}));
}
this.createControlTextEl(el);
return el;
}
dispose() {
// remove controlTextEl_ on dispose
this.controlTextEl_ = null;
super.dispose();
}
/**
* Create a control text element on this `ClickableComponent`
*
* @param {Element} [el]
* Parent element for the control text.
*
* @return {Element}
* The control text element that gets created.
*/
createControlTextEl(el) {
this.controlTextEl_ = createEl('span', {
className: 'vjs-control-text'
}, {
// let the screen reader user know that the text of the element may change
'aria-live': 'polite'
});
if (el) {
el.appendChild(this.controlTextEl_);
}
this.controlText(this.controlText_, el);
return this.controlTextEl_;
}
/**
* Get or set the localize text to use for the controls on the `ClickableComponent`.
*
* @param {string} [text]
* Control text for element.
*
* @param {Element} [el=this.el()]
* Element to set the title on.
*
* @return {string}
* - The control text when getting
*/
controlText(text, el = this.el()) {
if (text === undefined) {
return this.controlText_ || 'Need Text';
}
const localizedText = this.localize(text);
/** @protected */
this.controlText_ = text;
textContent(this.controlTextEl_, localizedText);
if (!this.nonIconControl && !this.player_.options_.noUITitleAttributes) {
// Set title attribute if only an icon is shown
el.setAttribute('title', localizedText);
}
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-control vjs-button ${super.buildCSSClass()}`;
}
/**
* Enable this `ClickableComponent`
*/
enable() {
if (!this.enabled_) {
this.enabled_ = true;
this.removeClass('vjs-disabled');
this.el_.setAttribute('aria-disabled', 'false');
if (typeof this.tabIndex_ !== 'undefined') {
this.el_.setAttribute('tabIndex', this.tabIndex_);
}
this.on(['tap', 'click'], this.handleClick_);
this.on('keydown', this.handleKeyDown_);
}
}
/**
* Disable this `ClickableComponent`
*/
disable() {
this.enabled_ = false;
this.addClass('vjs-disabled');
this.el_.setAttribute('aria-disabled', 'true');
if (typeof this.tabIndex_ !== 'undefined') {
this.el_.removeAttribute('tabIndex');
}
this.off('mouseover', this.handleMouseOver_);
this.off('mouseout', this.handleMouseOut_);
this.off(['tap', 'click'], this.handleClick_);
this.off('keydown', this.handleKeyDown_);
}
/**
* Handles language change in ClickableComponent for the player in components
*
*
*/
handleLanguagechange() {
this.controlText(this.controlText_);
}
/**
* Event handler that is called when a `ClickableComponent` receives a
* `click` or `tap` event.
*
* @param {Event} event
* The `tap` or `click` event that caused this function to be called.
*
* @listens tap
* @listens click
* @abstract
*/
handleClick(event) {
if (this.options_.clickHandler) {
this.options_.clickHandler.call(this, arguments);
}
}
/**
* Event handler that is called when a `ClickableComponent` receives a
* `keydown` event.
*
* By default, if the key is Space or Enter, it will trigger a `click` event.
*
* @param {KeyboardEvent} event
* The `keydown` event that caused this function to be called.
*
* @listens keydown
*/
handleKeyDown(event) {
// Support Space or Enter key operation to fire a click event. Also,
// prevent the event from propagating through the DOM and triggering
// Player hotkeys.
if (event.key === ' ' || event.key === 'Enter') {
event.preventDefault();
event.stopPropagation();
this.trigger('click');
} else {
// Pass keypress handling up for unsupported keys
super.handleKeyDown(event);
}
}
}
Component$1.registerComponent('ClickableComponent', ClickableComponent);
/**
* @file poster-image.js
*/
/** @import Player from './player' */
/**
* A `ClickableComponent` that handles showing the poster image for the player.
*
* @extends ClickableComponent
*/
class PosterImage extends ClickableComponent {
/**
* Create an instance of this class.
*
* @param {Player} player
* The `Player` that this class should attach to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
super(player, options);
this.update();
this.update_ = e => this.update(e);
player.on('posterchange', this.update_);
}
/**
* Clean up and dispose of the `PosterImage`.
*/
dispose() {
this.player().off('posterchange', this.update_);
super.dispose();
}
/**
* Create the `PosterImage`s DOM element.
*
* @return {Element}
* The element that gets created.
*/
createEl() {
// The el is an empty div to keep position in the DOM
// A picture and img el will be inserted when a source is set
return createEl('div', {
className: 'vjs-poster'
});
}
/**
* Get or set the `PosterImage`'s crossOrigin option.
*
* @param {string|null} [value]
* The value to set the crossOrigin to. If an argument is
* given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
*
* @return {string|null}
* - The current crossOrigin value of the `Player` when getting.
* - undefined when setting
*/
crossOrigin(value) {
// `null` can be set to unset a value
if (typeof value === 'undefined') {
if (this.$('img')) {
// If the poster's element exists, give its value
return this.$('img').crossOrigin;
} else if (this.player_.tech_ && this.player_.tech_.isReady_) {
// If not but the tech is ready, query the tech
return this.player_.crossOrigin();
}
// Otherwise check options as the poster is usually set before the state of crossorigin
// can be retrieved by the getter
return this.player_.options_.crossOrigin || this.player_.options_.crossorigin || null;
}
if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
this.player_.log.warn(`crossOrigin must be null, "anonymous" or "use-credentials", given "${value}"`);
return;
}
if (this.$('img')) {
this.$('img').crossOrigin = value;
}
return;
}
/**
* An {@link EventTarget~EventListener} for {@link Player#posterchange} events.
*
* @listens Player#posterchange
*
* @param {Event} [event]
* The `Player#posterchange` event that triggered this function.
*/
update(event) {
const url = this.player().poster();
this.setSrc(url);
// If there's no poster source we should display:none on this component
// so it's not still clickable or right-clickable
if (url) {
this.show();
} else {
this.hide();
}
}
/**
* Set the source of the `PosterImage` depending on the display method. (Re)creates
* the inner picture and img elementss when needed.
*
* @param {string} [url]
* The URL to the source for the `PosterImage`. If not specified or falsy,
* any source and ant inner picture/img are removed.
*/
setSrc(url) {
if (!url) {
this.el_.textContent = '';
return;
}
if (!this.$('img')) {
this.el_.appendChild(createEl('picture', {
className: 'vjs-poster',
// Don't want poster to be tabbable.
tabIndex: -1
}, {}, createEl('img', {
loading: 'lazy',
crossOrigin: this.crossOrigin()
}, {
alt: ''
})));
}
this.$('img').src = url;
}
/**
* An {@link EventTarget~EventListener} for clicks on the `PosterImage`. See
* {@link ClickableComponent#handleClick} for instances where this will be triggered.
*
* @listens tap
* @listens click
* @listens keydown
*
* @param {Event} event
+ The `click`, `tap` or `keydown` event that caused this function to be called.
*/
handleClick(event) {
// We don't want a click to trigger playback when controls are disabled
if (!this.player_.controls()) {
return;
}
if (this.player_.tech(true)) {
this.player_.tech(true).focus();
}
if (this.player_.paused()) {
silencePromise(this.player_.play());
} else {
this.player_.pause();
}
}
}
/**
* Get or set the `PosterImage`'s crossorigin option. For the HTML5 player, this
* sets the `crossOrigin` property on the ``
*
* @extends ClickableComponent
*/
class MenuItem extends ClickableComponent {
/**
* Creates an instance of the this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options={}]
* The key/value store of player options.
*
*/
constructor(player, options) {
super(player, options);
this.selectable = options.selectable;
this.isSelected_ = options.selected || false;
this.multiSelectable = options.multiSelectable;
this.selected(this.isSelected_);
if (this.selectable) {
if (this.multiSelectable) {
this.el_.setAttribute('role', 'menuitemcheckbox');
} else {
this.el_.setAttribute('role', 'menuitemradio');
}
} else {
this.el_.setAttribute('role', 'menuitem');
}
}
/**
* Create the `MenuItem's DOM element
*
* @param {string} [type=li]
* Element's node type, not actually used, always set to `li`.
*
* @param {Object} [props={}]
* An object of properties that should be set on the element
*
* @param {Object} [attrs={}]
* An object of attributes that should be set on the element
*
* @return {Element}
* The element that gets created.
*/
createEl(type, props, attrs) {
// The control is textual, not just an icon
this.nonIconControl = true;
const el = super.createEl('li', Object.assign({
className: 'vjs-menu-item',
tabIndex: -1
}, props), attrs);
// swap icon with menu item text.
const menuItemEl = createEl('span', {
className: 'vjs-menu-item-text',
textContent: this.localize(this.options_.label)
});
// If using SVG icons, the element with vjs-icon-placeholder will be added separately.
if (this.player_.options_.experimentalSvgIcons) {
el.appendChild(menuItemEl);
} else {
el.replaceChild(menuItemEl, el.querySelector('.vjs-icon-placeholder'));
}
return el;
}
/**
* Ignore keys which are used by the menu, but pass any other ones up. See
* {@link ClickableComponent#handleKeyDown} for instances where this is called.
*
* @param {KeyboardEvent} event
* The `keydown` event that caused this function to be called.
*
* @listens keydown
*/
handleKeyDown(event) {
if (!['Tab', 'Escape', 'ArrowUp', 'ArrowLeft', 'ArrowRight', 'ArrowDown'].includes(event.key)) {
// Pass keydown handling up for unused keys
super.handleKeyDown(event);
}
}
/**
* Any click on a `MenuItem` puts it into the selected state.
* See {@link ClickableComponent#handleClick} for instances where this is called.
*
* @param {Event} event
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
this.selected(true);
}
/**
* Set the state for this menu item as selected or not.
*
* @param {boolean} selected
* if the menu item is selected or not
*/
selected(selected) {
if (this.selectable) {
if (selected) {
this.addClass('vjs-selected');
this.el_.setAttribute('aria-checked', 'true');
// aria-checked isn't fully supported by browsers/screen readers,
// so indicate selected state to screen reader in the control text.
this.controlText(', selected');
this.isSelected_ = true;
} else {
this.removeClass('vjs-selected');
this.el_.setAttribute('aria-checked', 'false');
// Indicate un-selected state to screen reader
this.controlText('');
this.isSelected_ = false;
}
}
}
}
Component$1.registerComponent('MenuItem', MenuItem);
/**
* @file text-track-menu-item.js
*/
/** @import Player from '../../player' */
/**
* The specific menu item type for selecting a language within a text track kind
*
* @extends MenuItem
*/
class TextTrackMenuItem extends MenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
const track = options.track;
const tracks = player.textTracks();
// Modify options for parent MenuItem class's init.
options.label = track.label || track.language || 'Unknown';
options.selected = track.mode === 'showing';
super(player, options);
this.track = track;
// Determine the relevant kind(s) of tracks for this component and filter
// out empty kinds.
this.kinds = (options.kinds || [options.kind || this.track.kind]).filter(Boolean);
const changeHandler = (...args) => {
this.handleTracksChange.apply(this, args);
};
const selectedLanguageChangeHandler = (...args) => {
this.handleSelectedLanguageChange.apply(this, args);
};
player.on(['loadstart', 'texttrackchange'], changeHandler);
tracks.addEventListener('change', changeHandler);
tracks.addEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
this.on('dispose', function () {
player.off(['loadstart', 'texttrackchange'], changeHandler);
tracks.removeEventListener('change', changeHandler);
tracks.removeEventListener('selectedlanguagechange', selectedLanguageChangeHandler);
});
// iOS7 doesn't dispatch change events to TextTrackLists when an
// associated track's mode changes. Without something like
// Object.observe() (also not present on iOS7), it's not
// possible to detect changes to the mode attribute and polyfill
// the change event. As a poor substitute, we manually dispatch
// change events whenever the controls modify the mode.
if (tracks.onchange === undefined) {
let event;
this.on(['tap', 'click'], function () {
if (typeof window.Event !== 'object') {
// Android 2.3 throws an Illegal Constructor error for window.Event
try {
event = new window.Event('change');
} catch (err) {
// continue regardless of error
}
}
if (!event) {
event = document.createEvent('Event');
event.initEvent('change', true, true);
}
tracks.dispatchEvent(event);
});
}
// set the default state based on current tracks
this.handleTracksChange();
}
/**
* This gets called when an `TextTrackMenuItem` is "clicked". See
* {@link ClickableComponent} for more detailed information on what a click can be.
*
* @param {Event} event
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
const referenceTrack = this.track;
const tracks = this.player_.textTracks();
super.handleClick(event);
if (!tracks) {
return;
}
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
// If the track from the text tracks list is not of the right kind,
// skip it. We do not want to affect tracks of incompatible kind(s).
if (this.kinds.indexOf(track.kind) === -1) {
continue;
}
// If this text track is the component's track and it is not showing,
// set it to showing.
if (track === referenceTrack) {
if (track.mode !== 'showing') {
track.mode = 'showing';
}
// If this text track is not the component's track and it is not
// disabled, set it to disabled.
} else if (track.mode !== 'disabled') {
track.mode = 'disabled';
}
}
}
/**
* Handle text track list change
*
* @param {Event} event
* The `change` event that caused this function to be called.
*
* @listens TextTrackList#change
*/
handleTracksChange(event) {
const shouldBeSelected = this.track.mode === 'showing';
// Prevent redundant selected() calls because they may cause
// screen readers to read the appended control text unnecessarily
if (shouldBeSelected !== this.isSelected_) {
this.selected(shouldBeSelected);
}
}
handleSelectedLanguageChange(event) {
if (this.track.mode === 'showing') {
const selectedLanguage = this.player_.cache_.selectedLanguage;
// Don't replace the kind of track across the same language
if (selectedLanguage && selectedLanguage.enabled && selectedLanguage.language === this.track.language && selectedLanguage.kind !== this.track.kind) {
return;
}
this.player_.cache_.selectedLanguage = {
enabled: true,
language: this.track.language,
kind: this.track.kind
};
}
}
dispose() {
// remove reference to track object on dispose
this.track = null;
super.dispose();
}
}
Component$1.registerComponent('TextTrackMenuItem', TextTrackMenuItem);
/**
* @file off-text-track-menu-item.js
*/
/** @import Player from '../../player' */
/**
* A special menu item for turning off a specific type of text track
*
* @extends TextTrackMenuItem
*/
class OffTextTrackMenuItem extends TextTrackMenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
// Create pseudo track info
// Requires options['kind']
options.track = {
player,
// it is no longer necessary to store `kind` or `kinds` on the track itself
// since they are now stored in the `kinds` property of all instances of
// TextTrackMenuItem, but this will remain for backwards compatibility
kind: options.kind,
kinds: options.kinds,
default: false,
mode: 'disabled'
};
if (!options.kinds) {
options.kinds = [options.kind];
}
if (options.label) {
options.track.label = options.label;
} else {
options.track.label = options.kinds.join(' and ') + ' off';
}
// MenuItem is selectable
options.selectable = true;
// MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
options.multiSelectable = false;
super(player, options);
}
/**
* Handle text track change
*
* @param {Event} event
* The event that caused this function to run
*/
handleTracksChange(event) {
const tracks = this.player().textTracks();
let shouldBeSelected = true;
for (let i = 0, l = tracks.length; i < l; i++) {
const track = tracks[i];
if (this.options_.kinds.indexOf(track.kind) > -1 && track.mode === 'showing') {
shouldBeSelected = false;
break;
}
}
// Prevent redundant selected() calls because they may cause
// screen readers to read the appended control text unnecessarily
if (shouldBeSelected !== this.isSelected_) {
this.selected(shouldBeSelected);
}
}
handleSelectedLanguageChange(event) {
const tracks = this.player().textTracks();
let allHidden = true;
for (let i = 0, l = tracks.length; i < l; i++) {
const track = tracks[i];
if (['captions', 'descriptions', 'subtitles'].indexOf(track.kind) > -1 && track.mode === 'showing') {
allHidden = false;
break;
}
}
if (allHidden) {
this.player_.cache_.selectedLanguage = {
enabled: false
};
}
}
/**
* Update control text and label on languagechange
*/
handleLanguagechange() {
this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.label);
super.handleLanguagechange();
}
}
Component$1.registerComponent('OffTextTrackMenuItem', OffTextTrackMenuItem);
/**
* @file text-track-button.js
*/
/** @import Player from '../../player' */
/**
* The base class for buttons that toggle specific text track types (e.g. subtitles)
*
* @extends MenuButton
*/
class TextTrackButton extends TrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options={}]
* The key/value store of player options.
*/
constructor(player, options = {}) {
options.tracks = player.textTracks();
super(player, options);
}
/**
* Create a menu item for each text track
*
* @param {TextTrackMenuItem[]} [items=[]]
* Existing array of items to use during creation
*
* @return {TextTrackMenuItem[]}
* Array of menu items that were created
*/
createItems(items = [], TrackMenuItem = TextTrackMenuItem) {
// Label is an override for the [track] off label
// USed to localise captions/subtitles
let label;
if (this.label_) {
label = `${this.label_} off`;
}
// Add an OFF menu item to turn all tracks off
items.push(new OffTextTrackMenuItem(this.player_, {
kinds: this.kinds_,
kind: this.kind_,
label
}));
this.hideThreshold_ += 1;
const tracks = this.player_.textTracks();
if (!Array.isArray(this.kinds_)) {
this.kinds_ = [this.kind_];
}
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
// only add tracks that are of an appropriate kind and have a label
if (this.kinds_.indexOf(track.kind) > -1) {
const item = new TrackMenuItem(this.player_, {
track,
kinds: this.kinds_,
kind: this.kind_,
// MenuItem is selectable
selectable: true,
// MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
multiSelectable: false
});
item.addClass(`vjs-${track.kind}-menu-item`);
items.push(item);
}
}
return items;
}
}
Component$1.registerComponent('TextTrackButton', TextTrackButton);
/**
* @file chapters-track-menu-item.js
*/
/** @import Player from '../../player' */
/**
* The chapter track menu item
*
* @extends MenuItem
*/
class ChaptersTrackMenuItem extends MenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
const track = options.track;
const cue = options.cue;
const currentTime = player.currentTime();
// Modify options for parent MenuItem class's init.
options.selectable = true;
options.multiSelectable = false;
options.label = cue.text;
options.selected = cue.startTime <= currentTime && currentTime < cue.endTime;
super(player, options);
this.track = track;
this.cue = cue;
}
/**
* This gets called when an `ChaptersTrackMenuItem` is "clicked". See
* {@link ClickableComponent} for more detailed information on what a click can be.
*
* @param {Event} [event]
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
super.handleClick();
this.player_.currentTime(this.cue.startTime);
}
}
Component$1.registerComponent('ChaptersTrackMenuItem', ChaptersTrackMenuItem);
/**
* @file chapters-button.js
*/
/** @import Player from '../../player' */
/** @import Menu from '../../menu/menu' */
/** @import TextTrack from '../../tracks/text-track' */
/** @import TextTrackMenuItem from '../text-track-controls/text-track-menu-item' */
/**
* The button component for toggling and selecting chapters
* Chapters act much differently than other text tracks
* Cues are navigation vs. other tracks of alternative languages
*
* @extends TextTrackButton
*/
class ChaptersButton extends TextTrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function to call when this function is ready.
*/
constructor(player, options, ready) {
super(player, options, ready);
this.setIcon('chapters');
this.selectCurrentItem_ = () => {
this.items.forEach(item => {
item.selected(this.track_.activeCues[0] === item.cue);
});
};
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-chapters-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-chapters-button ${super.buildWrapperCSSClass()}`;
}
/**
* Update the menu based on the current state of its items.
*
* @param {Event} [event]
* An event that triggered this function to run.
*
* @listens TextTrackList#addtrack
* @listens TextTrackList#removetrack
* @listens TextTrackList#change
*/
update(event) {
if (event && event.track && event.track.kind !== 'chapters') {
return;
}
const track = this.findChaptersTrack();
if (track !== this.track_) {
this.setTrack(track);
super.update();
} else if (!this.items || track && track.cues && track.cues.length !== this.items.length) {
// Update the menu initially or if the number of cues has changed since set
super.update();
}
}
/**
* Set the currently selected track for the chapters button.
*
* @param {TextTrack} track
* The new track to select. Nothing will change if this is the currently selected
* track.
*/
setTrack(track) {
if (this.track_ === track) {
return;
}
if (!this.updateHandler_) {
this.updateHandler_ = this.update.bind(this);
}
// here this.track_ refers to the old track instance
if (this.track_) {
const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
if (remoteTextTrackEl) {
remoteTextTrackEl.removeEventListener('load', this.updateHandler_);
}
this.track_.removeEventListener('cuechange', this.selectCurrentItem_);
this.track_ = null;
}
this.track_ = track;
// here this.track_ refers to the new track instance
if (this.track_) {
this.track_.mode = 'hidden';
const remoteTextTrackEl = this.player_.remoteTextTrackEls().getTrackElementByTrack_(this.track_);
if (remoteTextTrackEl) {
remoteTextTrackEl.addEventListener('load', this.updateHandler_);
}
this.track_.addEventListener('cuechange', this.selectCurrentItem_);
}
}
/**
* Find the track object that is currently in use by this ChaptersButton
*
* @return {TextTrack|undefined}
* The current track or undefined if none was found.
*/
findChaptersTrack() {
const tracks = this.player_.textTracks() || [];
for (let i = tracks.length - 1; i >= 0; i--) {
// We will always choose the last track as our chaptersTrack
const track = tracks[i];
if (track.kind === this.kind_) {
return track;
}
}
}
/**
* Get the caption for the ChaptersButton based on the track label. This will also
* use the current tracks localized kind as a fallback if a label does not exist.
*
* @return {string}
* The tracks current label or the localized track kind.
*/
getMenuCaption() {
if (this.track_ && this.track_.label) {
return this.track_.label;
}
return this.localize(toTitleCase$1(this.kind_));
}
/**
* Create menu from chapter track
*
* @return {Menu}
* New menu for the chapter buttons
*/
createMenu() {
this.options_.title = this.getMenuCaption();
return super.createMenu();
}
/**
* Create a menu item for each text track
*
* @return {TextTrackMenuItem[]}
* Array of menu items
*/
createItems() {
const items = [];
if (!this.track_) {
return items;
}
const cues = this.track_.cues;
if (!cues) {
return items;
}
for (let i = 0, l = cues.length; i < l; i++) {
const cue = cues[i];
const mi = new ChaptersTrackMenuItem(this.player_, {
track: this.track_,
cue
});
items.push(mi);
}
return items;
}
}
/**
* `kind` of TextTrack to look for to associate it with this menu.
*
* @type {string}
* @private
*/
ChaptersButton.prototype.kind_ = 'chapters';
/**
* The text that should display over the `ChaptersButton`s controls. Added for localization.
*
* @type {string}
* @protected
*/
ChaptersButton.prototype.controlText_ = 'Chapters';
Component$1.registerComponent('ChaptersButton', ChaptersButton);
/**
* @file descriptions-button.js
*/
/** @import Player from '../../player' */
/**
* The button component for toggling and selecting descriptions
*
* @extends TextTrackButton
*/
class DescriptionsButton extends TextTrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function to call when this component is ready.
*/
constructor(player, options, ready) {
super(player, options, ready);
this.setIcon('audio-description');
const tracks = player.textTracks();
const changeHandler = bind_(this, this.handleTracksChange);
tracks.addEventListener('change', changeHandler);
this.on('dispose', function () {
tracks.removeEventListener('change', changeHandler);
});
}
/**
* Handle text track change
*
* @param {Event} event
* The event that caused this function to run
*
* @listens TextTrackList#change
*/
handleTracksChange(event) {
const tracks = this.player().textTracks();
let disabled = false;
// Check whether a track of a different kind is showing
for (let i = 0, l = tracks.length; i < l; i++) {
const track = tracks[i];
if (track.kind !== this.kind_ && track.mode === 'showing') {
disabled = true;
break;
}
}
// If another track is showing, disable this menu button
if (disabled) {
this.disable();
} else {
this.enable();
}
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-descriptions-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-descriptions-button ${super.buildWrapperCSSClass()}`;
}
}
/**
* `kind` of TextTrack to look for to associate it with this menu.
*
* @type {string}
* @private
*/
DescriptionsButton.prototype.kind_ = 'descriptions';
/**
* The text that should display over the `DescriptionsButton`s controls. Added for localization.
*
* @type {string}
* @protected
*/
DescriptionsButton.prototype.controlText_ = 'Descriptions';
Component$1.registerComponent('DescriptionsButton', DescriptionsButton);
/**
* @file subtitles-button.js
*/
/** @import Player from '../../player' */
/**
* The button component for toggling and selecting subtitles
*
* @extends TextTrackButton
*/
class SubtitlesButton extends TextTrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function to call when this component is ready.
*/
constructor(player, options, ready) {
super(player, options, ready);
this.setIcon('subtitles');
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-subtitles-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-subtitles-button ${super.buildWrapperCSSClass()}`;
}
}
/**
* `kind` of TextTrack to look for to associate it with this menu.
*
* @type {string}
* @private
*/
SubtitlesButton.prototype.kind_ = 'subtitles';
/**
* The text that should display over the `SubtitlesButton`s controls. Added for localization.
*
* @type {string}
* @protected
*/
SubtitlesButton.prototype.controlText_ = 'Subtitles';
Component$1.registerComponent('SubtitlesButton', SubtitlesButton);
/**
* @file caption-settings-menu-item.js
*/
/** @import Player from '../../player' */
/**
* The menu item for caption track settings menu
*
* @extends TextTrackMenuItem
*/
class CaptionSettingsMenuItem extends TextTrackMenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
options.track = {
player,
kind: options.kind,
label: options.kind + ' settings',
selectable: false,
default: false,
mode: 'disabled'
};
// CaptionSettingsMenuItem has no concept of 'selected'
options.selectable = false;
options.name = 'CaptionSettingsMenuItem';
super(player, options);
this.addClass('vjs-texttrack-settings');
this.controlText(', opens ' + options.kind + ' settings dialog');
}
/**
* This gets called when an `CaptionSettingsMenuItem` is "clicked". See
* {@link ClickableComponent} for more detailed information on what a click can be.
*
* @param {Event} [event]
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
this.player().getChild('textTrackSettings').open();
}
/**
* Update control text and label on languagechange
*/
handleLanguagechange() {
this.$('.vjs-menu-item-text').textContent = this.player_.localize(this.options_.kind + ' settings');
super.handleLanguagechange();
}
}
Component$1.registerComponent('CaptionSettingsMenuItem', CaptionSettingsMenuItem);
/**
* @file captions-button.js
*/
/** @import Player from '../../player' */
/**
* The button component for toggling and selecting captions
*
* @extends TextTrackButton
*/
class CaptionsButton extends TextTrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function to call when this component is ready.
*/
constructor(player, options, ready) {
super(player, options, ready);
this.setIcon('captions');
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-captions-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-captions-button ${super.buildWrapperCSSClass()}`;
}
/**
* Create caption menu items
*
* @return {CaptionSettingsMenuItem[]}
* The array of current menu items.
*/
createItems() {
const items = [];
if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
items.push(new CaptionSettingsMenuItem(this.player_, {
kind: this.kind_
}));
this.hideThreshold_ += 1;
}
return super.createItems(items);
}
}
/**
* `kind` of TextTrack to look for to associate it with this menu.
*
* @type {string}
* @private
*/
CaptionsButton.prototype.kind_ = 'captions';
/**
* The text that should display over the `CaptionsButton`s controls. Added for localization.
*
* @type {string}
* @protected
*/
CaptionsButton.prototype.controlText_ = 'Captions';
Component$1.registerComponent('CaptionsButton', CaptionsButton);
/**
* @file subs-caps-menu-item.js
*/
/**
* SubsCapsMenuItem has an [cc] icon to distinguish captions from subtitles
* in the SubsCapsMenu.
*
* @extends TextTrackMenuItem
*/
class SubsCapsMenuItem extends TextTrackMenuItem {
createEl(type, props, attrs) {
const el = super.createEl(type, props, attrs);
const parentSpan = el.querySelector('.vjs-menu-item-text');
if (this.options_.track.kind === 'captions') {
if (this.player_.options_.experimentalSvgIcons) {
this.setIcon('captions', el);
} else {
parentSpan.appendChild(createEl('span', {
className: 'vjs-icon-placeholder'
}, {
'aria-hidden': true
}));
}
parentSpan.appendChild(createEl('span', {
className: 'vjs-control-text',
// space added as the text will visually flow with the
// label
textContent: ` ${this.localize('Captions')}`
}));
}
return el;
}
}
Component$1.registerComponent('SubsCapsMenuItem', SubsCapsMenuItem);
/**
* @file sub-caps-button.js
*/
/** @import Player from '../../player' */
/**
* The button component for toggling and selecting captions and/or subtitles
*
* @extends TextTrackButton
*/
class SubsCapsButton extends TextTrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* The function to call when this component is ready.
*/
constructor(player, options = {}) {
super(player, options);
// Although North America uses "captions" in most cases for
// "captions and subtitles" other locales use "subtitles"
this.label_ = 'subtitles';
this.setIcon('subtitles');
if (['en', 'en-us', 'en-ca', 'fr-ca'].indexOf(this.player_.language_) > -1) {
this.label_ = 'captions';
this.setIcon('captions');
}
this.menuButton_.controlText(toTitleCase$1(this.label_));
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-subs-caps-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-subs-caps-button ${super.buildWrapperCSSClass()}`;
}
/**
* Create caption/subtitles menu items
*
* @return {CaptionSettingsMenuItem[]}
* The array of current menu items.
*/
createItems() {
let items = [];
if (!(this.player().tech_ && this.player().tech_.featuresNativeTextTracks) && this.player().getChild('textTrackSettings')) {
items.push(new CaptionSettingsMenuItem(this.player_, {
kind: this.label_
}));
this.hideThreshold_ += 1;
}
items = super.createItems(items, SubsCapsMenuItem);
return items;
}
}
/**
* `kind`s of TextTrack to look for to associate it with this menu.
*
* @type {array}
* @private
*/
SubsCapsButton.prototype.kinds_ = ['captions', 'subtitles'];
/**
* The text that should display over the `SubsCapsButton`s controls.
*
*
* @type {string}
* @protected
*/
SubsCapsButton.prototype.controlText_ = 'Subtitles';
Component$1.registerComponent('SubsCapsButton', SubsCapsButton);
/**
* @file audio-track-menu-item.js
*/
/** @import Player from '../../player' */
/**
* An {@link AudioTrack} {@link MenuItem}
*
* @extends MenuItem
*/
class AudioTrackMenuItem extends MenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
const track = options.track;
const tracks = player.audioTracks();
// Modify options for parent MenuItem class's init.
options.label = track.label || track.language || 'Unknown';
options.selected = track.enabled;
super(player, options);
this.track = track;
this.addClass(`vjs-${track.kind}-menu-item`);
const changeHandler = (...args) => {
this.handleTracksChange.apply(this, args);
};
tracks.addEventListener('change', changeHandler);
this.on('dispose', () => {
tracks.removeEventListener('change', changeHandler);
});
}
createEl(type, props, attrs) {
const el = super.createEl(type, props, attrs);
const parentSpan = el.querySelector('.vjs-menu-item-text');
if (['main-desc', 'descriptions'].indexOf(this.options_.track.kind) >= 0) {
parentSpan.appendChild(createEl('span', {
className: 'vjs-icon-placeholder'
}, {
'aria-hidden': true
}));
parentSpan.appendChild(createEl('span', {
className: 'vjs-control-text',
textContent: ' ' + this.localize('Descriptions')
}));
}
return el;
}
/**
* This gets called when an `AudioTrackMenuItem is "clicked". See {@link ClickableComponent}
* for more detailed information on what a click can be.
*
* @param {Event} [event]
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
super.handleClick(event);
// the audio track list will automatically toggle other tracks
// off for us.
this.track.enabled = true;
// when native audio tracks are used, we want to make sure that other tracks are turned off
if (this.player_.tech_.featuresNativeAudioTracks) {
const tracks = this.player_.audioTracks();
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
// skip the current track since we enabled it above
if (track === this.track) {
continue;
}
track.enabled = track === this.track;
}
}
}
/**
* Handle any {@link AudioTrack} change.
*
* @param {Event} [event]
* The {@link AudioTrackList#change} event that caused this to run.
*
* @listens AudioTrackList#change
*/
handleTracksChange(event) {
this.selected(this.track.enabled);
}
}
Component$1.registerComponent('AudioTrackMenuItem', AudioTrackMenuItem);
/**
* @file audio-track-button.js
*/
/**
* The base class for buttons that toggle specific {@link AudioTrack} types.
*
* @extends TrackButton
*/
class AudioTrackButton extends TrackButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options={}]
* The key/value store of player options.
*/
constructor(player, options = {}) {
options.tracks = player.audioTracks();
super(player, options);
this.setIcon('audio');
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-audio-button ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-audio-button ${super.buildWrapperCSSClass()}`;
}
/**
* Create a menu item for each audio track
*
* @param {AudioTrackMenuItem[]} [items=[]]
* An array of existing menu items to use.
*
* @return {AudioTrackMenuItem[]}
* An array of menu items
*/
createItems(items = []) {
// if there's only one audio track, there no point in showing it
this.hideThreshold_ = 1;
const tracks = this.player_.audioTracks();
for (let i = 0; i < tracks.length; i++) {
const track = tracks[i];
items.push(new AudioTrackMenuItem(this.player_, {
track,
// MenuItem is selectable
selectable: true,
// MenuItem is NOT multiSelectable (i.e. only one can be marked "selected" at a time)
multiSelectable: false
}));
}
return items;
}
}
/**
* The text that should display over the `AudioTrackButton`s controls. Added for localization.
*
* @type {string}
* @protected
*/
AudioTrackButton.prototype.controlText_ = 'Audio Track';
Component$1.registerComponent('AudioTrackButton', AudioTrackButton);
/**
* @file playback-rate-menu-item.js
*/
/** @import Player from '../../player' */
/**
* The specific menu item type for selecting a playback rate.
*
* @extends MenuItem
*/
class PlaybackRateMenuItem extends MenuItem {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
const label = options.rate;
const rate = parseFloat(label, 10);
// Modify options for parent MenuItem class's init.
options.label = label;
options.selected = rate === player.playbackRate();
options.selectable = true;
options.multiSelectable = false;
super(player, options);
this.label = label;
this.rate = rate;
this.on(player, 'ratechange', e => this.update(e));
}
/**
* This gets called when an `PlaybackRateMenuItem` is "clicked". See
* {@link ClickableComponent} for more detailed information on what a click can be.
*
* @param {Event} [event]
* The `keydown`, `tap`, or `click` event that caused this function to be
* called.
*
* @listens tap
* @listens click
*/
handleClick(event) {
super.handleClick();
this.player().playbackRate(this.rate);
}
/**
* Update the PlaybackRateMenuItem when the playbackrate changes.
*
* @param {Event} [event]
* The `ratechange` event that caused this function to run.
*
* @listens Player#ratechange
*/
update(event) {
this.selected(this.player().playbackRate() === this.rate);
}
}
/**
* The text that should display over the `PlaybackRateMenuItem`s controls. Added for localization.
*
* @type {string}
* @private
*/
PlaybackRateMenuItem.prototype.contentElType = 'button';
Component$1.registerComponent('PlaybackRateMenuItem', PlaybackRateMenuItem);
/**
* @file playback-rate-menu-button.js
*/
/** @import Player from '../../player' */
/**
* The component for controlling the playback rate.
*
* @extends MenuButton
*/
class PlaybackRateMenuButton extends MenuButton {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
super(player, options);
this.menuButton_.el_.setAttribute('aria-describedby', this.labelElId_);
this.updateVisibility();
this.updateLabel();
this.on(player, 'loadstart', e => this.updateVisibility(e));
this.on(player, 'ratechange', e => this.updateLabel(e));
this.on(player, 'playbackrateschange', e => this.handlePlaybackRateschange(e));
}
/**
* Create the `Component`'s DOM element
*
* @return {Element}
* The element that was created.
*/
createEl() {
const el = super.createEl();
this.labelElId_ = 'vjs-playback-rate-value-label-' + this.id_;
this.labelEl_ = createEl('div', {
className: 'vjs-playback-rate-value',
id: this.labelElId_,
textContent: '1x'
});
el.appendChild(this.labelEl_);
return el;
}
dispose() {
this.labelEl_ = null;
super.dispose();
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-playback-rate ${super.buildCSSClass()}`;
}
buildWrapperCSSClass() {
return `vjs-playback-rate ${super.buildWrapperCSSClass()}`;
}
/**
* Create the list of menu items. Specific to each subclass.
*
*/
createItems() {
const rates = this.playbackRates();
const items = [];
for (let i = rates.length - 1; i >= 0; i--) {
items.push(new PlaybackRateMenuItem(this.player(), {
rate: rates[i] + 'x'
}));
}
return items;
}
/**
* On playbackrateschange, update the menu to account for the new items.
*
* @listens Player#playbackrateschange
*/
handlePlaybackRateschange(event) {
this.update();
}
/**
* Get possible playback rates
*
* @return {Array}
* All possible playback rates
*/
playbackRates() {
const player = this.player();
return player.playbackRates && player.playbackRates() || [];
}
/**
* Get whether playback rates is supported by the tech
* and an array of playback rates exists
*
* @return {boolean}
* Whether changing playback rate is supported
*/
playbackRateSupported() {
return this.player().tech_ && this.player().tech_.featuresPlaybackRate && this.playbackRates() && this.playbackRates().length > 0;
}
/**
* Hide playback rate controls when they're no playback rate options to select
*
* @param {Event} [event]
* The event that caused this function to run.
*
* @listens Player#loadstart
*/
updateVisibility(event) {
if (this.playbackRateSupported()) {
this.removeClass('vjs-hidden');
} else {
this.addClass('vjs-hidden');
}
}
/**
* Update button label when rate changed
*
* @param {Event} [event]
* The event that caused this function to run.
*
* @listens Player#ratechange
*/
updateLabel(event) {
if (this.playbackRateSupported()) {
this.labelEl_.textContent = this.player().playbackRate() + 'x';
}
}
}
/**
* The text that should display over the `PlaybackRateMenuButton`s controls.
*
* Added for localization.
*
* @type {string}
* @protected
*/
PlaybackRateMenuButton.prototype.controlText_ = 'Playback Rate';
Component$1.registerComponent('PlaybackRateMenuButton', PlaybackRateMenuButton);
/**
* @file spacer.js
*/
/**
* Just an empty spacer element that can be used as an append point for plugins, etc.
* Also can be used to create space between elements when necessary.
*
* @extends Component
*/
class Spacer extends Component$1 {
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-spacer ${super.buildCSSClass()}`;
}
/**
* Create the `Component`'s DOM element
*
* @return {Element}
* The element that was created.
*/
createEl(tag = 'div', props = {}, attributes = {}) {
if (!props.className) {
props.className = this.buildCSSClass();
}
return super.createEl(tag, props, attributes);
}
}
Component$1.registerComponent('Spacer', Spacer);
/**
* @file custom-control-spacer.js
*/
/**
* Spacer specifically meant to be used as an insertion point for new plugins, etc.
*
* @extends Spacer
*/
class CustomControlSpacer extends Spacer {
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*/
buildCSSClass() {
return `vjs-custom-control-spacer ${super.buildCSSClass()}`;
}
/**
* Create the `Component`'s DOM element
*
* @return {Element}
* The element that was created.
*/
createEl() {
return super.createEl('div', {
className: this.buildCSSClass(),
// No-flex/table-cell mode requires there be some content
// in the cell to fill the remaining space of the table.
textContent: '\u00a0'
});
}
}
Component$1.registerComponent('CustomControlSpacer', CustomControlSpacer);
/**
* @file control-bar.js
*/
/**
* Container of main controls.
*
* @extends Component
*/
class ControlBar extends Component$1 {
/**
* Create the `Component`'s DOM element
*
* @return {Element}
* The element that was created.
*/
createEl() {
return super.createEl('div', {
className: 'vjs-control-bar',
dir: 'ltr'
});
}
}
/**
* Default options for `ControlBar`
*
* @type {Object}
* @private
*/
ControlBar.prototype.options_ = {
children: ['playToggle', 'skipBackward', 'skipForward', 'volumePanel', 'currentTimeDisplay', 'timeDivider', 'durationDisplay', 'progressControl', 'liveDisplay', 'seekToLive', 'remainingTimeDisplay', 'customControlSpacer', 'playbackRateMenuButton', 'chaptersButton', 'descriptionsButton', 'subsCapsButton', 'audioTrackButton', 'pictureInPictureToggle', 'fullscreenToggle']
};
Component$1.registerComponent('ControlBar', ControlBar);
/**
* @file error-display.js
*/
/** @import Player from './player' */
/**
* A display that indicates an error has occurred. This means that the video
* is unplayable.
*
* @extends ModalDialog
*/
class ErrorDisplay extends ModalDialog {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
super(player, options);
this.on(player, 'error', e => {
this.open(e);
});
}
/**
* Builds the default DOM `className`.
*
* @return {string}
* The DOM `className` for this object.
*
* @deprecated Since version 5.
*/
buildCSSClass() {
return `vjs-error-display ${super.buildCSSClass()}`;
}
/**
* Gets the localized error message based on the `Player`s error.
*
* @return {string}
* The `Player`s error message localized or an empty string.
*/
content() {
const error = this.player().error();
return error ? this.localize(error.message) : '';
}
}
/**
* The default options for an `ErrorDisplay`.
*
* @private
*/
ErrorDisplay.prototype.options_ = Object.assign({}, ModalDialog.prototype.options_, {
pauseOnOpen: false,
fillAlways: true,
temporary: false,
uncloseable: true
});
Component$1.registerComponent('ErrorDisplay', ErrorDisplay);
/** @import Player from './player' */
/** @import { ContentDescriptor } from '../utils/dom' */
/**
* Creates DOM element of 'select' & its options.
*
* @extends Component
*/
class TextTrackSelect extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {ContentDescriptor} [options.content=undefined]
* Provide customized content for this modal.
*
* @param {string} [options.legendId]
* A text with part of an string to create atribute of aria-labelledby.
*
* @param {string} [options.id]
* A text with part of an string to create atribute of aria-labelledby.
*
* @param {Array} [options.SelectOptions]
* Array that contains the value & textContent of for each of the
* options elements.
*/
constructor(player, options = {}) {
super(player, options);
this.el_.setAttribute('aria-labelledby', this.selectLabelledbyIds);
}
/**
* Create the `TextTrackSelect`'s DOM element
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
this.selectLabelledbyIds = [this.options_.legendId, this.options_.labelId].join(' ').trim();
// Create select & inner options
const selectoptions = createEl('select', {
id: this.options_.id
}, {}, this.options_.SelectOptions.map(optionText => {
// Constructs an id for the .
// For the colour settings that have two with a each, generates an id based off the label value
// For font size/family and edge style with one and no , generates an id with a guid
const optionId = (this.options_.labelId ? this.options_.labelId : `vjs-track-option-${newGUID()}`) + '-' + optionText[1].replace(/\W+/g, '');
const option = createEl('option', {
id: optionId,
value: this.localize(optionText[0]),
textContent: optionText[1]
});
option.setAttribute('aria-labelledby', `${this.selectLabelledbyIds} ${optionId}`);
return option;
}));
return selectoptions;
}
}
Component$1.registerComponent('TextTrackSelect', TextTrackSelect);
/** @import Player from './player' */
/** @import { ContentDescriptor } from '../utils/dom' */
/**
* Creates fieldset section of 'TextTrackSettings'.
* Manganes two versions of fieldsets, one for type of 'colors'
* & the other for 'font', Component adds diferent DOM elements
* to that fieldset depending on the type.
*
* @extends Component
*/
class TextTrackFieldset extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {ContentDescriptor} [options.content=undefined]
* Provide customized content for this modal.
*
* @param {string} [options.legendId]
* A text with part of an string to create atribute of aria-labelledby.
* It passes to 'TextTrackSelect'.
*
* @param {string} [options.id]
* A text with part of an string to create atribute of aria-labelledby.
* It passes to 'TextTrackSelect'.
*
* @param {string} [options.legendText]
* A text to use as the text content of the legend element.
*
* @param {Array} [options.selects]
* Array that contains the selects that are use to create 'selects'
* components.
*
* @param {Array} [options.SelectOptions]
* Array that contains the value & textContent of for each of the
* options elements, it passes to 'TextTrackSelect'.
*
* @param {string} [options.type]
* Conditions if some DOM elements will be added to the fieldset
* component.
*
* @param {Object} [options.selectConfigs]
* Object with the following properties that are the selects configurations:
* backgroundColor, backgroundOpacity, color, edgeStyle, fontFamily,
* fontPercent, textOpacity, windowColor, windowOpacity.
* These properties are use to configure the 'TextTrackSelect' Component.
*/
constructor(player, options = {}) {
super(player, options);
// Add Components & DOM Elements
const legendElement = createEl('legend', {
textContent: this.localize(this.options_.legendText),
id: this.options_.legendId
});
this.el().appendChild(legendElement);
const selects = this.options_.selects;
// Iterate array of selects to create 'selects' components
for (const i of selects) {
const selectConfig = this.options_.selectConfigs[i];
const selectClassName = selectConfig.className;
const id = selectConfig.id.replace('%s', this.options_.id_);
let span = null;
const guid = `vjs_select_${newGUID()}`;
// Conditionally create span to add on the component
if (this.options_.type === 'colors') {
span = createEl('span', {
className: selectClassName
});
const label = createEl('label', {
id,
className: 'vjs-label',
textContent: selectConfig.label
});
label.setAttribute('for', guid);
span.appendChild(label);
}
const textTrackSelect = new TextTrackSelect(player, {
SelectOptions: selectConfig.options,
legendId: this.options_.legendId,
id: guid,
labelId: id
});
this.addChild(textTrackSelect);
// Conditionally append to 'select' component to conditionally created span
if (this.options_.type === 'colors') {
span.appendChild(textTrackSelect.el());
this.el().appendChild(span);
}
}
}
/**
* Create the `TextTrackFieldset`'s DOM element
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
const el = createEl('fieldset', {
// Prefixing classes of elements within a player with "vjs-"
// is a convention used in Video.js.
className: this.options_.className
});
return el;
}
}
Component$1.registerComponent('TextTrackFieldset', TextTrackFieldset);
/** @import Player from './player' */
/** @import { ContentDescriptor } from '../utils/dom' */
/**
* The component 'TextTrackSettingsColors' displays a set of 'fieldsets'
* using the component 'TextTrackFieldset'.
*
* @extends Component
*/
class TextTrackSettingsColors extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {ContentDescriptor} [options.content=undefined]
* Provide customized content for this modal.
*
* @param {Array} [options.fieldSets]
* Array that contains the configurations for the selects.
*
* @param {Object} [options.selectConfigs]
* Object with the following properties that are the select confugations:
* backgroundColor, backgroundOpacity, color, edgeStyle, fontFamily,
* fontPercent, textOpacity, windowColor, windowOpacity.
* it passes to 'TextTrackFieldset'.
*/
constructor(player, options = {}) {
super(player, options);
const id_ = this.options_.textTrackComponentid;
// createElFgColor_
const ElFgColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-text-legend-${id_}`,
legendText: this.localize('Text'),
className: 'vjs-fg vjs-track-setting',
selects: this.options_.fieldSets[0],
selectConfigs: this.options_.selectConfigs,
type: 'colors'
});
this.addChild(ElFgColorFieldset);
// createElBgColor_
const ElBgColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-background-${id_}`,
legendText: this.localize('Text Background'),
className: 'vjs-bg vjs-track-setting',
selects: this.options_.fieldSets[1],
selectConfigs: this.options_.selectConfigs,
type: 'colors'
});
this.addChild(ElBgColorFieldset);
// createElWinColor_
const ElWinColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-window-${id_}`,
legendText: this.localize('Caption Area Background'),
className: 'vjs-window vjs-track-setting',
selects: this.options_.fieldSets[2],
selectConfigs: this.options_.selectConfigs,
type: 'colors'
});
this.addChild(ElWinColorFieldset);
}
/**
* Create the `TextTrackSettingsColors`'s DOM element
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
const el = createEl('div', {
className: 'vjs-track-settings-colors'
});
return el;
}
}
Component$1.registerComponent('TextTrackSettingsColors', TextTrackSettingsColors);
/** @import Player from './player' */
/** @import { ContentDescriptor } from '../utils/dom' */
/**
* The component 'TextTrackSettingsFont' displays a set of 'fieldsets'
* using the component 'TextTrackFieldset'.
*
* @extends Component
*/
class TextTrackSettingsFont extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {ContentDescriptor} [options.content=undefined]
* Provide customized content for this modal.
*
* @param {Array} [options.fieldSets]
* Array that contains the configurations for the selects.
*
* @param {Object} [options.selectConfigs]
* Object with the following properties that are the select confugations:
* backgroundColor, backgroundOpacity, color, edgeStyle, fontFamily,
* fontPercent, textOpacity, windowColor, windowOpacity.
* it passes to 'TextTrackFieldset'.
*/
constructor(player, options = {}) {
super(player, options);
const id_ = this.options_.textTrackComponentid;
const ElFgColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-font-size-${id_}`,
legendText: 'Font Size',
className: 'vjs-font-percent vjs-track-setting',
selects: this.options_.fieldSets[0],
selectConfigs: this.options_.selectConfigs,
type: 'font'
});
this.addChild(ElFgColorFieldset);
const ElBgColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-edge-style-${id_}`,
legendText: this.localize('Text Edge Style'),
className: 'vjs-edge-style vjs-track-setting',
selects: this.options_.fieldSets[1],
selectConfigs: this.options_.selectConfigs,
type: 'font'
});
this.addChild(ElBgColorFieldset);
const ElWinColorFieldset = new TextTrackFieldset(player, {
id_,
legendId: `captions-font-family-${id_}`,
legendText: this.localize('Font Family'),
className: 'vjs-font-family vjs-track-setting',
selects: this.options_.fieldSets[2],
selectConfigs: this.options_.selectConfigs,
type: 'font'
});
this.addChild(ElWinColorFieldset);
}
/**
* Create the `TextTrackSettingsFont`'s DOM element
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
const el = createEl('div', {
className: 'vjs-track-settings-font'
});
return el;
}
}
Component$1.registerComponent('TextTrackSettingsFont', TextTrackSettingsFont);
/**
* Buttons of reset & done that modal 'TextTrackSettings'
* uses as part of its content.
*
* 'Reset': Resets all settings on 'TextTrackSettings'.
* 'Done': Closes 'TextTrackSettings' modal.
*
* @extends Component
*/
class TrackSettingsControls extends Component$1 {
constructor(player, options = {}) {
super(player, options);
// Create DOM elements
const defaultsDescription = this.localize('restore all settings to the default values');
const resetButton = new Button(player, {
controlText: defaultsDescription,
className: 'vjs-default-button'
});
resetButton.el().classList.remove('vjs-control', 'vjs-button');
resetButton.el().textContent = this.localize('Reset');
this.addChild(resetButton);
const doneButton = new Button(player, {
controlText: defaultsDescription,
className: 'vjs-done-button'
});
// Remove unrequired style classes
doneButton.el().classList.remove('vjs-control', 'vjs-button');
doneButton.el().textContent = this.localize('Done');
this.addChild(doneButton);
}
/**
* Create the `TrackSettingsControls`'s DOM element
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
const el = createEl('div', {
className: 'vjs-track-settings-controls'
});
return el;
}
}
Component$1.registerComponent('TrackSettingsControls', TrackSettingsControls);
/**
* @file text-track-settings.js
*/
/** @import Player from '../player' */
const LOCAL_STORAGE_KEY$1 = 'vjs-text-track-settings';
const COLOR_BLACK = ['#000', 'Black'];
const COLOR_BLUE = ['#00F', 'Blue'];
const COLOR_CYAN = ['#0FF', 'Cyan'];
const COLOR_GREEN = ['#0F0', 'Green'];
const COLOR_MAGENTA = ['#F0F', 'Magenta'];
const COLOR_RED = ['#F00', 'Red'];
const COLOR_WHITE = ['#FFF', 'White'];
const COLOR_YELLOW = ['#FF0', 'Yellow'];
const OPACITY_OPAQUE = ['1', 'Opaque'];
const OPACITY_SEMI = ['0.5', 'Semi-Transparent'];
const OPACITY_TRANS = ['0', 'Transparent'];
// Configuration for the various elements in the DOM of this component.
//
// Possible keys include:
//
// `default`:
// The default option index. Only needs to be provided if not zero.
// `parser`:
// A function which is used to parse the value from the selected option in
// a customized way.
// `selector`:
// The selector used to find the associated element.
const selectConfigs = {
backgroundColor: {
selector: '.vjs-bg-color > select',
id: 'captions-background-color-%s',
label: 'Color',
options: [COLOR_BLACK, COLOR_WHITE, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN],
className: 'vjs-bg-color'
},
backgroundOpacity: {
selector: '.vjs-bg-opacity > select',
id: 'captions-background-opacity-%s',
label: 'Opacity',
options: [OPACITY_OPAQUE, OPACITY_SEMI, OPACITY_TRANS],
className: 'vjs-bg-opacity vjs-opacity'
},
color: {
selector: '.vjs-text-color > select',
id: 'captions-foreground-color-%s',
label: 'Color',
options: [COLOR_WHITE, COLOR_BLACK, COLOR_RED, COLOR_GREEN, COLOR_BLUE, COLOR_YELLOW, COLOR_MAGENTA, COLOR_CYAN],
className: 'vjs-text-color'
},
edgeStyle: {
selector: '.vjs-edge-style > select',
id: '',
label: 'Text Edge Style',
options: [['none', 'None'], ['raised', 'Raised'], ['depressed', 'Depressed'], ['uniform', 'Uniform'], ['dropshadow', 'Drop shadow']]
},
fontFamily: {
selector: '.vjs-font-family > select',
id: '',
label: 'Font Family',
options: [['proportionalSansSerif', 'Proportional Sans-Serif'], ['monospaceSansSerif', 'Monospace Sans-Serif'], ['proportionalSerif', 'Proportional Serif'], ['monospaceSerif', 'Monospace Serif'], ['casual', 'Casual'], ['script', 'Script'], ['small-caps', 'Small Caps']]
},
fontPercent: {
selector: '.vjs-font-percent > select',
id: '',
label: 'Font Size',
options: [['0.50', '50%'], ['0.75', '75%'], ['1.00', '100%'], ['1.25', '125%'], ['1.50', '150%'], ['1.75', '175%'], ['2.00', '200%'], ['3.00', '300%'], ['4.00', '400%']],
default: 2,
parser: v => v === '1.00' ? null : Number(v)
},
textOpacity: {
selector: '.vjs-text-opacity > select',
id: 'captions-foreground-opacity-%s',
label: 'Opacity',
options: [OPACITY_OPAQUE, OPACITY_SEMI],
className: 'vjs-text-opacity vjs-opacity'
},
// Options for this object are defined below.
windowColor: {
selector: '.vjs-window-color > select',
id: 'captions-window-color-%s',
label: 'Color',
className: 'vjs-window-color'
},
// Options for this object are defined below.
windowOpacity: {
selector: '.vjs-window-opacity > select',
id: 'captions-window-opacity-%s',
label: 'Opacity',
options: [OPACITY_TRANS, OPACITY_SEMI, OPACITY_OPAQUE],
className: 'vjs-window-opacity vjs-opacity'
}
};
selectConfigs.windowColor.options = selectConfigs.backgroundColor.options;
/**
* Get the actual value of an option.
*
* @param {string} value
* The value to get
*
* @param {Function} [parser]
* Optional function to adjust the value.
*
* @return {*}
* - Will be `undefined` if no value exists
* - Will be `undefined` if the given value is "none".
* - Will be the actual value otherwise.
*
* @private
*/
function parseOptionValue(value, parser) {
if (parser) {
value = parser(value);
}
if (value && value !== 'none') {
return value;
}
}
/**
* Gets the value of the selected element within a element.
*
* @param {Element} el
* the element to look in
*
* @param {Function} [parser]
* Optional function to adjust the value.
*
* @return {*}
* - Will be `undefined` if no value exists
* - Will be `undefined` if the given value is "none".
* - Will be the actual value otherwise.
*
* @private
*/
function getSelectedOptionValue(el, parser) {
const value = el.options[el.options.selectedIndex].value;
return parseOptionValue(value, parser);
}
/**
* Sets the selected element within a element based on a
* given value.
*
* @param {Element} el
* The element to look in.
*
* @param {string} value
* the property to look on.
*
* @param {Function} [parser]
* Optional function to adjust the value before comparing.
*
* @private
*/
function setSelectedOption(el, value, parser) {
if (!value) {
return;
}
for (let i = 0; i < el.options.length; i++) {
if (parseOptionValue(el.options[i].value, parser) === value) {
el.selectedIndex = i;
break;
}
}
}
/**
* Manipulate Text Tracks settings.
*
* @extends ModalDialog
*/
class TextTrackSettings extends ModalDialog {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*/
constructor(player, options) {
options.temporary = false;
super(player, options);
this.updateDisplay = this.updateDisplay.bind(this);
// fill the modal and pretend we have opened it
this.fill();
this.hasBeenOpened_ = this.hasBeenFilled_ = true;
this.renderModalComponents(player);
this.endDialog = createEl('p', {
className: 'vjs-control-text',
textContent: this.localize('End of dialog window.')
});
this.el().appendChild(this.endDialog);
this.setDefaults();
// Grab `persistTextTrackSettings` from the player options if not passed in child options
if (options.persistTextTrackSettings === undefined) {
this.options_.persistTextTrackSettings = this.options_.playerOptions.persistTextTrackSettings;
}
this.bindFunctionsToSelectsAndButtons();
if (this.options_.persistTextTrackSettings) {
this.restoreSettings();
}
}
renderModalComponents(player) {
const textTrackSettingsColors = new TextTrackSettingsColors(player, {
textTrackComponentid: this.id_,
selectConfigs,
fieldSets: [['color', 'textOpacity'], ['backgroundColor', 'backgroundOpacity'], ['windowColor', 'windowOpacity']]
});
this.addChild(textTrackSettingsColors);
const textTrackSettingsFont = new TextTrackSettingsFont(player, {
textTrackComponentid: this.id_,
selectConfigs,
fieldSets: [['fontPercent'], ['edgeStyle'], ['fontFamily']]
});
this.addChild(textTrackSettingsFont);
const trackSettingsControls = new TrackSettingsControls(player);
this.addChild(trackSettingsControls);
}
bindFunctionsToSelectsAndButtons() {
this.on(this.$('.vjs-done-button'), ['click', 'tap'], () => {
this.saveSettings();
this.close();
});
this.on(this.$('.vjs-default-button'), ['click', 'tap'], () => {
this.setDefaults();
this.updateDisplay();
});
each(selectConfigs, config => {
this.on(this.$(config.selector), 'change', this.updateDisplay);
});
}
dispose() {
this.endDialog = null;
super.dispose();
}
label() {
return this.localize('Caption Settings Dialog');
}
description() {
return this.localize('Beginning of dialog window. Escape will cancel and close the window.');
}
buildCSSClass() {
return super.buildCSSClass() + ' vjs-text-track-settings';
}
/**
* Gets an object of text track settings (or null).
*
* @return {Object}
* An object with config values parsed from the DOM or localStorage.
*/
getValues() {
return reduce(selectConfigs, (accum, config, key) => {
const value = getSelectedOptionValue(this.$(config.selector), config.parser);
if (value !== undefined) {
accum[key] = value;
}
return accum;
}, {});
}
/**
* Sets text track settings from an object of values.
*
* @param {Object} values
* An object with config values parsed from the DOM or localStorage.
*/
setValues(values) {
each(selectConfigs, (config, key) => {
setSelectedOption(this.$(config.selector), values[key], config.parser);
});
}
/**
* Sets all `` elements to their default values.
*/
setDefaults() {
each(selectConfigs, config => {
const index = config.hasOwnProperty('default') ? config.default : 0;
this.$(config.selector).selectedIndex = index;
});
}
/**
* Restore texttrack settings from localStorage
*/
restoreSettings() {
let values;
try {
values = JSON.parse(window.localStorage.getItem(LOCAL_STORAGE_KEY$1));
} catch (err) {
log$1.warn(err);
}
if (values) {
this.setValues(values);
}
}
/**
* Save text track settings to localStorage
*/
saveSettings() {
if (!this.options_.persistTextTrackSettings) {
return;
}
const values = this.getValues();
try {
if (Object.keys(values).length) {
window.localStorage.setItem(LOCAL_STORAGE_KEY$1, JSON.stringify(values));
} else {
window.localStorage.removeItem(LOCAL_STORAGE_KEY$1);
}
} catch (err) {
log$1.warn(err);
}
}
/**
* Update display of text track settings
*/
updateDisplay() {
const ttDisplay = this.player_.getChild('textTrackDisplay');
if (ttDisplay) {
ttDisplay.updateDisplay();
}
}
/**
* Repopulate dialog with new localizations on languagechange
*/
handleLanguagechange() {
this.fill();
this.renderModalComponents(this.player_);
this.bindFunctionsToSelectsAndButtons();
}
}
Component$1.registerComponent('TextTrackSettings', TextTrackSettings);
/**
* @file resize-manager.js
*/
/**
* A Resize Manager. It is in charge of triggering `playerresize` on the player in the right conditions.
*
* It'll either create an iframe and use a debounced resize handler on it or use the new {@link https://wicg.github.io/ResizeObserver/|ResizeObserver}.
*
* If the ResizeObserver is available natively, it will be used. A polyfill can be passed in as an option.
* If a `playerresize` event is not needed, the ResizeManager component can be removed from the player, see the example below.
*
* @example How to disable the resize manager
* const player = videojs('#vid', {
* resizeManager: false
* });
*
* @see {@link https://wicg.github.io/ResizeObserver/|ResizeObserver specification}
*
* @extends Component
*/
class ResizeManager extends Component$1 {
/**
* Create the ResizeManager.
*
* @param {Object} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of ResizeManager options.
*
* @param {Object} [options.ResizeObserver]
* A polyfill for ResizeObserver can be passed in here.
* If this is set to null it will ignore the native ResizeObserver and fall back to the iframe fallback.
*/
constructor(player, options) {
let RESIZE_OBSERVER_AVAILABLE = options.ResizeObserver || window.ResizeObserver;
// if `null` was passed, we want to disable the ResizeObserver
if (options.ResizeObserver === null) {
RESIZE_OBSERVER_AVAILABLE = false;
}
// Only create an element when ResizeObserver isn't available
const options_ = merge$2({
createEl: !RESIZE_OBSERVER_AVAILABLE,
reportTouchActivity: false
}, options);
super(player, options_);
this.ResizeObserver = options.ResizeObserver || window.ResizeObserver;
this.loadListener_ = null;
this.resizeObserver_ = null;
this.debouncedHandler_ = debounce(() => {
this.resizeHandler();
}, 100, false, this);
if (RESIZE_OBSERVER_AVAILABLE) {
this.resizeObserver_ = new this.ResizeObserver(this.debouncedHandler_);
this.resizeObserver_.observe(player.el());
} else {
this.loadListener_ = () => {
if (!this.el_ || !this.el_.contentWindow) {
return;
}
const debouncedHandler_ = this.debouncedHandler_;
let unloadListener_ = this.unloadListener_ = function () {
off(this, 'resize', debouncedHandler_);
off(this, 'unload', unloadListener_);
unloadListener_ = null;
};
// safari and edge can unload the iframe before resizemanager dispose
// we have to dispose of event handlers correctly before that happens
on(this.el_.contentWindow, 'unload', unloadListener_);
on(this.el_.contentWindow, 'resize', debouncedHandler_);
};
this.one('load', this.loadListener_);
}
}
createEl() {
return super.createEl('iframe', {
className: 'vjs-resize-manager',
tabIndex: -1,
title: this.localize('No content')
}, {
'aria-hidden': 'true'
});
}
/**
* Called when a resize is triggered on the iframe or a resize is observed via the ResizeObserver
*
* @fires Player#playerresize
*/
resizeHandler() {
/**
* Called when the player size has changed
*
* @event Player#playerresize
* @type {Event}
*/
// make sure player is still around to trigger
// prevents this from causing an error after dispose
if (!this.player_ || !this.player_.trigger) {
return;
}
this.player_.trigger('playerresize');
}
dispose() {
if (this.debouncedHandler_) {
this.debouncedHandler_.cancel();
}
if (this.resizeObserver_) {
if (this.player_.el()) {
this.resizeObserver_.unobserve(this.player_.el());
}
this.resizeObserver_.disconnect();
}
if (this.loadListener_) {
this.off('load', this.loadListener_);
}
if (this.el_ && this.el_.contentWindow && this.unloadListener_) {
this.unloadListener_.call(this.el_.contentWindow);
}
this.ResizeObserver = null;
this.resizeObserver = null;
this.debouncedHandler_ = null;
this.loadListener_ = null;
super.dispose();
}
}
Component$1.registerComponent('ResizeManager', ResizeManager);
/** @import Player from './player' */
const defaults$1 = {
trackingThreshold: 20,
liveTolerance: 15
};
/*
track when we are at the live edge, and other helpers for live playback */
/**
* A class for checking live current time and determining when the player
* is at or behind the live edge.
*/
class LiveTracker extends Component$1 {
/**
* Creates an instance of this class.
*
* @param {Player} player
* The `Player` that this class should be attached to.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {number} [options.trackingThreshold=20]
* Number of seconds of live window (seekableEnd - seekableStart) that
* media needs to have before the liveui will be shown.
*
* @param {number} [options.liveTolerance=15]
* Number of seconds behind live that we have to be
* before we will be considered non-live. Note that this will only
* be used when playing at the live edge. This allows large seekable end
* changes to not effect whether we are live or not.
*/
constructor(player, options) {
// LiveTracker does not need an element
const options_ = merge$2(defaults$1, options, {
createEl: false
});
super(player, options_);
this.trackLiveHandler_ = () => this.trackLive_();
this.handlePlay_ = e => this.handlePlay(e);
this.handleFirstTimeupdate_ = e => this.handleFirstTimeupdate(e);
this.handleSeeked_ = e => this.handleSeeked(e);
this.seekToLiveEdge_ = e => this.seekToLiveEdge(e);
this.reset_();
this.on(this.player_, 'durationchange', e => this.handleDurationchange(e));
// we should try to toggle tracking on canplay as native playback engines, like Safari
// may not have the proper values for things like seekableEnd until then
this.on(this.player_, 'canplay', () => this.toggleTracking());
}
/**
* all the functionality for tracking when seek end changes
* and for tracking how far past seek end we should be
*/
trackLive_() {
const seekable = this.player_.seekable();
// skip undefined seekable
if (!seekable || !seekable.length) {
return;
}
const newTime = Number(window.performance.now().toFixed(4));
const deltaTime = this.lastTime_ === -1 ? 0 : (newTime - this.lastTime_) / 1000;
this.lastTime_ = newTime;
this.pastSeekEnd_ = this.pastSeekEnd() + deltaTime;
const liveCurrentTime = this.liveCurrentTime();
const currentTime = this.player_.currentTime();
// we are behind live if any are true
// 1. the player is paused
// 2. the user seeked to a location 2 seconds away from live
// 3. the difference between live and current time is greater
// liveTolerance which defaults to 15s
let isBehind = this.player_.paused() || this.seekedBehindLive_ || Math.abs(liveCurrentTime - currentTime) > this.options_.liveTolerance;
// we cannot be behind if
// 1. until we have not seen a timeupdate yet
// 2. liveCurrentTime is Infinity, which happens on Android and Native Safari
if (!this.timeupdateSeen_ || liveCurrentTime === Infinity) {
isBehind = false;
}
if (isBehind !== this.behindLiveEdge_) {
this.behindLiveEdge_ = isBehind;
this.trigger('liveedgechange');
}
}
/**
* handle a durationchange event on the player
* and start/stop tracking accordingly.
*/
handleDurationchange() {
this.toggleTracking();
}
/**
* start/stop tracking
*/
toggleTracking() {
if (this.player_.duration() === Infinity && this.liveWindow() >= this.options_.trackingThreshold) {
if (this.player_.options_.liveui) {
this.player_.addClass('vjs-liveui');
}
this.startTracking();
} else {
this.player_.removeClass('vjs-liveui');
this.stopTracking();
}
}
/**
* start tracking live playback
*/
startTracking() {
if (this.isTracking()) {
return;
}
// If we haven't seen a timeupdate, we need to check whether playback
// began before this component started tracking. This can happen commonly
// when using autoplay.
if (!this.timeupdateSeen_) {
this.timeupdateSeen_ = this.player_.hasStarted();
}
this.trackingInterval_ = this.setInterval(this.trackLiveHandler_, UPDATE_REFRESH_INTERVAL);
this.trackLive_();
this.on(this.player_, ['play', 'pause'], this.trackLiveHandler_);
if (!this.timeupdateSeen_) {
this.one(this.player_, 'play', this.handlePlay_);
this.one(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
} else {
this.on(this.player_, 'seeked', this.handleSeeked_);
}
}
/**
* handle the first timeupdate on the player if it wasn't already playing
* when live tracker started tracking.
*/
handleFirstTimeupdate() {
this.timeupdateSeen_ = true;
this.on(this.player_, 'seeked', this.handleSeeked_);
}
/**
* Keep track of what time a seek starts, and listen for seeked
* to find where a seek ends.
*/
handleSeeked() {
const timeDiff = Math.abs(this.liveCurrentTime() - this.player_.currentTime());
this.seekedBehindLive_ = this.nextSeekedFromUser_ && timeDiff > 2;
this.nextSeekedFromUser_ = false;
this.trackLive_();
}
/**
* handle the first play on the player, and make sure that we seek
* right to the live edge.
*/
handlePlay() {
this.one(this.player_, 'timeupdate', this.seekToLiveEdge_);
}
/**
* Stop tracking, and set all internal variables to
* their initial value.
*/
reset_() {
this.lastTime_ = -1;
this.pastSeekEnd_ = 0;
this.lastSeekEnd_ = -1;
this.behindLiveEdge_ = true;
this.timeupdateSeen_ = false;
this.seekedBehindLive_ = false;
this.nextSeekedFromUser_ = false;
this.clearInterval(this.trackingInterval_);
this.trackingInterval_ = null;
this.off(this.player_, ['play', 'pause'], this.trackLiveHandler_);
this.off(this.player_, 'seeked', this.handleSeeked_);
this.off(this.player_, 'play', this.handlePlay_);
this.off(this.player_, 'timeupdate', this.handleFirstTimeupdate_);
this.off(this.player_, 'timeupdate', this.seekToLiveEdge_);
}
/**
* The next seeked event is from the user. Meaning that any seek
* > 2s behind live will be considered behind live for real and
* liveTolerance will be ignored.
*/
nextSeekedFromUser() {
this.nextSeekedFromUser_ = true;
}
/**
* stop tracking live playback
*/
stopTracking() {
if (!this.isTracking()) {
return;
}
this.reset_();
this.trigger('liveedgechange');
}
/**
* A helper to get the player seekable end
* so that we don't have to null check everywhere
*
* @return {number}
* The furthest seekable end or Infinity.
*/
seekableEnd() {
const seekable = this.player_.seekable();
const seekableEnds = [];
let i = seekable ? seekable.length : 0;
while (i--) {
seekableEnds.push(seekable.end(i));
}
// grab the furthest seekable end after sorting, or if there are none
// default to Infinity
return seekableEnds.length ? seekableEnds.sort()[seekableEnds.length - 1] : Infinity;
}
/**
* A helper to get the player seekable start
* so that we don't have to null check everywhere
*
* @return {number}
* The earliest seekable start or 0.
*/
seekableStart() {
const seekable = this.player_.seekable();
const seekableStarts = [];
let i = seekable ? seekable.length : 0;
while (i--) {
seekableStarts.push(seekable.start(i));
}
// grab the first seekable start after sorting, or if there are none
// default to 0
return seekableStarts.length ? seekableStarts.sort()[0] : 0;
}
/**
* Get the live time window aka
* the amount of time between seekable start and
* live current time.
*
* @return {number}
* The amount of seconds that are seekable in
* the live video.
*/
liveWindow() {
const liveCurrentTime = this.liveCurrentTime();
// if liveCurrenTime is Infinity then we don't have a liveWindow at all
if (liveCurrentTime === Infinity) {
return 0;
}
return liveCurrentTime - this.seekableStart();
}
/**
* Determines if the player is live, only checks if this component
* is tracking live playback or not
*
* @return {boolean}
* Whether liveTracker is tracking
*/
isLive() {
return this.isTracking();
}
/**
* Determines if currentTime is at the live edge and won't fall behind
* on each seekableendchange
*
* @return {boolean}
* Whether playback is at the live edge
*/
atLiveEdge() {
return !this.behindLiveEdge();
}
/**
* get what we expect the live current time to be
*
* @return {number}
* The expected live current time
*/
liveCurrentTime() {
return this.pastSeekEnd() + this.seekableEnd();
}
/**
* The number of seconds that have occurred after seekable end
* changed. This will be reset to 0 once seekable end changes.
*
* @return {number}
* Seconds past the current seekable end
*/
pastSeekEnd() {
const seekableEnd = this.seekableEnd();
if (this.lastSeekEnd_ !== -1 && seekableEnd !== this.lastSeekEnd_) {
this.pastSeekEnd_ = 0;
}
this.lastSeekEnd_ = seekableEnd;
return this.pastSeekEnd_;
}
/**
* If we are currently behind the live edge, aka currentTime will be
* behind on a seekableendchange
*
* @return {boolean}
* If we are behind the live edge
*/
behindLiveEdge() {
return this.behindLiveEdge_;
}
/**
* Whether live tracker is currently tracking or not.
*/
isTracking() {
return typeof this.trackingInterval_ === 'number';
}
/**
* Seek to the live edge if we are behind the live edge
*/
seekToLiveEdge() {
this.seekedBehindLive_ = false;
if (this.atLiveEdge()) {
return;
}
this.nextSeekedFromUser_ = false;
this.player_.currentTime(this.liveCurrentTime());
}
/**
* Dispose of liveTracker
*/
dispose() {
this.stopTracking();
super.dispose();
}
}
Component$1.registerComponent('LiveTracker', LiveTracker);
/**
* Displays an element over the player which contains an optional title and
* description for the current content.
*
* Much of the code for this component originated in the now obsolete
* videojs-dock plugin: https://github.com/brightcove/videojs-dock/
*
* @extends Component
*/
class TitleBar extends Component$1 {
constructor(player, options) {
super(player, options);
this.on('statechanged', e => this.updateDom_());
this.updateDom_();
}
/**
* Create the `TitleBar`'s DOM element
*
* @return {Element}
* The element that was created.
*/
createEl() {
this.els = {
title: createEl('div', {
className: 'vjs-title-bar-title',
id: `vjs-title-bar-title-${newGUID()}`
}),
description: createEl('div', {
className: 'vjs-title-bar-description',
id: `vjs-title-bar-description-${newGUID()}`
})
};
return createEl('div', {
className: 'vjs-title-bar'
}, {}, values$1(this.els));
}
/**
* Updates the DOM based on the component's state object.
*/
updateDom_() {
const tech = this.player_.tech_;
const techEl = tech && tech.el_;
const techAriaAttrs = {
title: 'aria-labelledby',
description: 'aria-describedby'
};
['title', 'description'].forEach(k => {
const value = this.state[k];
const el = this.els[k];
const techAriaAttr = techAriaAttrs[k];
emptyEl(el);
if (value) {
textContent(el, value);
}
// If there is a tech element available, update its ARIA attributes
// according to whether a title and/or description have been provided.
if (techEl) {
techEl.removeAttribute(techAriaAttr);
if (value) {
techEl.setAttribute(techAriaAttr, el.id);
}
}
});
if (this.state.title || this.state.description) {
this.show();
} else {
this.hide();
}
}
/**
* Update the contents of the title bar component with new title and
* description text.
*
* If both title and description are missing, the title bar will be hidden.
*
* If either title or description are present, the title bar will be visible.
*
* NOTE: Any previously set value will be preserved. To unset a previously
* set value, you must pass an empty string or null.
*
* For example:
*
* ```
* update({title: 'foo', description: 'bar'}) // title: 'foo', description: 'bar'
* update({description: 'bar2'}) // title: 'foo', description: 'bar2'
* update({title: ''}) // title: '', description: 'bar2'
* update({title: 'foo', description: null}) // title: 'foo', description: null
* ```
*
* @param {Object} [options={}]
* An options object. When empty, the title bar will be hidden.
*
* @param {string} [options.title]
* A title to display in the title bar.
*
* @param {string} [options.description]
* A description to display in the title bar.
*/
update(options) {
this.setState(options);
}
/**
* Dispose the component.
*/
dispose() {
const tech = this.player_.tech_;
const techEl = tech && tech.el_;
if (techEl) {
techEl.removeAttribute('aria-labelledby');
techEl.removeAttribute('aria-describedby');
}
super.dispose();
this.els = null;
}
}
Component$1.registerComponent('TitleBar', TitleBar);
/** @import Player from './player' */
/**
* @typedef {object} TransientButtonOptions
* @property {string} [controlText] Control text, usually visible for these buttons
* @property {number} [initialDisplay=4000] Time in ms that button should initially remain visible
* @property {Array<'top'|'neartop'|'bottom'|'left'|'right'>} [position] Array of position strings to add basic styles for positioning
* @property {string} [className] Class(es) to add
* @property {boolean} [takeFocus=false] Whether element sohuld take focus when shown
* @property {Function} [clickHandler] Function called on button activation
*/
/** @type {TransientButtonOptions} */
const defaults = {
initialDisplay: 4000,
position: [],
takeFocus: false
};
/**
* A floating transient button.
* It's recommended to insert these buttons _before_ the control bar with the this argument to `addChild`
* for a logical tab order.
*
* @example
* ```
* player.addChild(
* 'TransientButton',
* options,
* player.children().indexOf(player.getChild("ControlBar"))
* )
* ```
*
* @extends Button
*/
class TransientButton extends Button {
/**
* TransientButton constructor
*
* @param {Player} player The button's player
* @param {TransientButtonOptions} options Options for the transient button
*/
constructor(player, options) {
options = merge$2(defaults, options);
super(player, options);
this.controlText(options.controlText);
this.hide();
// When shown, the float button will be visible even if the user is inactive.
// Clear this if there is any interaction.
this.on(this.player_, ['useractive', 'userinactive'], e => {
this.removeClass('force-display');
});
}
/**
* Return CSS class including position classes
*
* @return {string} CSS class list
*/
buildCSSClass() {
return `vjs-transient-button focus-visible ${this.options_.position.map(c => `vjs-${c}`).join(' ')}`;
}
/**
* Create the button element
*
* @return {HTMLButtonElement} The button element
*/
createEl() {
/** @type HTMLButtonElement */
const el = createEl('button', {}, {
type: 'button',
class: this.buildCSSClass()
}, createEl('span'));
this.controlTextEl_ = el.querySelector('span');
return el;
}
/**
* Show the button. The button will remain visible for the `initialDisplay` time, default 4s,
* and when there is user activity.
*/
show() {
super.show();
this.addClass('force-display');
if (this.options_.takeFocus) {
this.el().focus({
preventScroll: true
});
}
this.forceDisplayTimeout = this.player_.setTimeout(() => {
this.removeClass('force-display');
}, this.options_.initialDisplay);
}
/**
* Hide the display, even if during the `initialDisplay` time.
*/
hide() {
this.removeClass('force-display');
super.hide();
}
/**
* Dispose the component
*/
dispose() {
this.player_.clearTimeout(this.forceDisplayTimeout);
super.dispose();
}
}
Component$1.registerComponent('TransientButton', TransientButton);
/** @import Html5 from './html5' */
/**
* This function is used to fire a sourceset when there is something
* similar to `mediaEl.load()` being called. It will try to find the source via
* the `src` attribute and then the `` elements. It will then fire `sourceset`
* with the source that was found or empty string if we cannot know. If it cannot
* find a source then `sourceset` will not be fired.
*
* @param {Html5} tech
* The tech object that sourceset was setup on
*
* @return {boolean}
* returns false if the sourceset was not fired and true otherwise.
*/
const sourcesetLoad = tech => {
const el = tech.el();
// if `el.src` is set, that source will be loaded.
if (el.hasAttribute('src')) {
tech.triggerSourceset(el.src);
return true;
}
/**
* Since there isn't a src property on the media element, source elements will be used for
* implementing the source selection algorithm. This happens asynchronously and
* for most cases were there is more than one source we cannot tell what source will
* be loaded, without re-implementing the source selection algorithm. At this time we are not
* going to do that. There are three special cases that we do handle here though:
*
* 1. If there are no sources, do not fire `sourceset`.
* 2. If there is only one `` with a `src` property/attribute that is our `src`
* 3. If there is more than one `` but all of them have the same `src` url.
* That will be our src.
*/
const sources = tech.$$('source');
const srcUrls = [];
let src = '';
// if there are no sources, do not fire sourceset
if (!sources.length) {
return false;
}
// only count valid/non-duplicate source elements
for (let i = 0; i < sources.length; i++) {
const url = sources[i].src;
if (url && srcUrls.indexOf(url) === -1) {
srcUrls.push(url);
}
}
// there were no valid sources
if (!srcUrls.length) {
return false;
}
// there is only one valid source element url
// use that
if (srcUrls.length === 1) {
src = srcUrls[0];
}
tech.triggerSourceset(src);
return true;
};
/**
* our implementation of an `innerHTML` descriptor for browsers
* that do not have one.
*/
const innerHTMLDescriptorPolyfill = Object.defineProperty({}, 'innerHTML', {
get() {
return this.cloneNode(true).innerHTML;
},
set(v) {
// make a dummy node to use innerHTML on
const dummy = document.createElement(this.nodeName.toLowerCase());
// set innerHTML to the value provided
dummy.innerHTML = v;
// make a document fragment to hold the nodes from dummy
const docFrag = document.createDocumentFragment();
// copy all of the nodes created by the innerHTML on dummy
// to the document fragment
while (dummy.childNodes.length) {
docFrag.appendChild(dummy.childNodes[0]);
}
// remove content
this.innerText = '';
// now we add all of that html in one by appending the
// document fragment. This is how innerHTML does it.
window.Element.prototype.appendChild.call(this, docFrag);
// then return the result that innerHTML's setter would
return this.innerHTML;
}
});
/**
* Get a property descriptor given a list of priorities and the
* property to get.
*/
const getDescriptor = (priority, prop) => {
let descriptor = {};
for (let i = 0; i < priority.length; i++) {
descriptor = Object.getOwnPropertyDescriptor(priority[i], prop);
if (descriptor && descriptor.set && descriptor.get) {
break;
}
}
descriptor.enumerable = true;
descriptor.configurable = true;
return descriptor;
};
const getInnerHTMLDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, window.Element.prototype, innerHTMLDescriptorPolyfill], 'innerHTML');
/**
* Patches browser internal functions so that we can tell synchronously
* if a `` was appended to the media element. For some reason this
* causes a `sourceset` if the the media element is ready and has no source.
* This happens when:
* - The page has just loaded and the media element does not have a source.
* - The media element was emptied of all sources, then `load()` was called.
*
* It does this by patching the following functions/properties when they are supported:
*
* - `append()` - can be used to add a `` element to the media element
* - `appendChild()` - can be used to add a `` element to the media element
* - `insertAdjacentHTML()` - can be used to add a `` element to the media element
* - `innerHTML` - can be used to add a `` element to the media element
*
* @param {Html5} tech
* The tech object that sourceset is being setup on.
*/
const firstSourceWatch = function (tech) {
const el = tech.el();
// make sure firstSourceWatch isn't setup twice.
if (el.resetSourceWatch_) {
return;
}
const old = {};
const innerDescriptor = getInnerHTMLDescriptor(tech);
const appendWrapper = appendFn => (...args) => {
const retval = appendFn.apply(el, args);
sourcesetLoad(tech);
return retval;
};
['append', 'appendChild', 'insertAdjacentHTML'].forEach(k => {
if (!el[k]) {
return;
}
// store the old function
old[k] = el[k];
// call the old function with a sourceset if a source
// was loaded
el[k] = appendWrapper(old[k]);
});
Object.defineProperty(el, 'innerHTML', merge$2(innerDescriptor, {
set: appendWrapper(innerDescriptor.set)
}));
el.resetSourceWatch_ = () => {
el.resetSourceWatch_ = null;
Object.keys(old).forEach(k => {
el[k] = old[k];
});
Object.defineProperty(el, 'innerHTML', innerDescriptor);
};
// on the first sourceset, we need to revert our changes
tech.one('sourceset', el.resetSourceWatch_);
};
/**
* our implementation of a `src` descriptor for browsers
* that do not have one
*/
const srcDescriptorPolyfill = Object.defineProperty({}, 'src', {
get() {
if (this.hasAttribute('src')) {
return getAbsoluteURL(window.Element.prototype.getAttribute.call(this, 'src'));
}
return '';
},
set(v) {
window.Element.prototype.setAttribute.call(this, 'src', v);
return v;
}
});
const getSrcDescriptor = tech => getDescriptor([tech.el(), window.HTMLMediaElement.prototype, srcDescriptorPolyfill], 'src');
/**
* setup `sourceset` handling on the `Html5` tech. This function
* patches the following element properties/functions:
*
* - `src` - to determine when `src` is set
* - `setAttribute()` - to determine when `src` is set
* - `load()` - this re-triggers the source selection algorithm, and can
* cause a sourceset.
*
* If there is no source when we are adding `sourceset` support or during a `load()`
* we also patch the functions listed in `firstSourceWatch`.
*
* @param {Html5} tech
* The tech to patch
*/
const setupSourceset = function (tech) {
if (!tech.featuresSourceset) {
return;
}
const el = tech.el();
// make sure sourceset isn't setup twice.
if (el.resetSourceset_) {
return;
}
const srcDescriptor = getSrcDescriptor(tech);
const oldSetAttribute = el.setAttribute;
const oldLoad = el.load;
Object.defineProperty(el, 'src', merge$2(srcDescriptor, {
set: v => {
const retval = srcDescriptor.set.call(el, v);
// we use the getter here to get the actual value set on src
tech.triggerSourceset(el.src);
return retval;
}
}));
el.setAttribute = (n, v) => {
const retval = oldSetAttribute.call(el, n, v);
if (/src/i.test(n)) {
tech.triggerSourceset(el.src);
}
return retval;
};
el.load = () => {
const retval = oldLoad.call(el);
// if load was called, but there was no source to fire
// sourceset on. We have to watch for a source append
// as that can trigger a `sourceset` when the media element
// has no source
if (!sourcesetLoad(tech)) {
tech.triggerSourceset('');
firstSourceWatch(tech);
}
return retval;
};
if (el.currentSrc) {
tech.triggerSourceset(el.currentSrc);
} else if (!sourcesetLoad(tech)) {
firstSourceWatch(tech);
}
el.resetSourceset_ = () => {
el.resetSourceset_ = null;
el.load = oldLoad;
el.setAttribute = oldSetAttribute;
Object.defineProperty(el, 'src', srcDescriptor);
if (el.resetSourceWatch_) {
el.resetSourceWatch_();
}
};
};
/**
* @file html5.js
*/
/**
* HTML5 Media Controller - Wrapper for HTML5 Media API
*
* @mixes Tech~SourceHandlerAdditions
* @extends Tech
*/
class Html5 extends Tech {
/**
* Create an instance of this Tech.
*
* @param {Object} [options]
* The key/value store of player options.
*
* @param {Function} [ready]
* Callback function to call when the `HTML5` Tech is ready.
*/
constructor(options, ready) {
super(options, ready);
const source = options.source;
let crossoriginTracks = false;
this.featuresVideoFrameCallback = this.featuresVideoFrameCallback && this.el_.tagName === 'VIDEO';
// Set the source if one is provided
// 1) Check if the source is new (if not, we want to keep the original so playback isn't interrupted)
// 2) Check to see if the network state of the tag was failed at init, and if so, reset the source
// anyway so the error gets fired.
if (source && (this.el_.currentSrc !== source.src || options.tag && options.tag.initNetworkState_ === 3)) {
this.setSource(source);
} else {
this.handleLateInit_(this.el_);
}
// setup sourceset after late sourceset/init
if (options.enableSourceset) {
this.setupSourcesetHandling_();
}
this.isScrubbing_ = false;
if (this.el_.hasChildNodes()) {
const nodes = this.el_.childNodes;
let nodesLength = nodes.length;
const removeNodes = [];
while (nodesLength--) {
const node = nodes[nodesLength];
const nodeName = node.nodeName.toLowerCase();
if (nodeName === 'track') {
if (!this.featuresNativeTextTracks) {
// Empty video tag tracks so the built-in player doesn't use them also.
// This may not be fast enough to stop HTML5 browsers from reading the tags
// so we'll need to turn off any default tracks if we're manually doing
// captions and subtitles. videoElement.textTracks
removeNodes.push(node);
} else {
// store HTMLTrackElement and TextTrack to remote list
this.remoteTextTrackEls().addTrackElement_(node);
this.remoteTextTracks().addTrack(node.track);
this.textTracks().addTrack(node.track);
if (!crossoriginTracks && !this.el_.hasAttribute('crossorigin') && isCrossOrigin(node.src)) {
crossoriginTracks = true;
}
}
}
}
for (let i = 0; i < removeNodes.length; i++) {
this.el_.removeChild(removeNodes[i]);
}
}
this.proxyNativeTracks_();
if (this.featuresNativeTextTracks && crossoriginTracks) {
log$1.warn('Text Tracks are being loaded from another origin but the crossorigin attribute isn\'t used.\n' + 'This may prevent text tracks from loading.');
}
// prevent iOS Safari from disabling metadata text tracks during native playback
this.restoreMetadataTracksInIOSNativePlayer_();
// Determine if native controls should be used
// Our goal should be to get the custom controls on mobile solid everywhere
// so we can remove this all together. Right now this will block custom
// controls on touch enabled laptops like the Chrome Pixel
if ((TOUCH_ENABLED || IS_IPHONE) && options.nativeControlsForTouch === true) {
this.setControls(true);
}
// on iOS, we want to proxy `webkitbeginfullscreen` and `webkitendfullscreen`
// into a `fullscreenchange` event
this.proxyWebkitFullscreen_();
this.triggerReady();
}
/**
* Dispose of `HTML5` media element and remove all tracks.
*/
dispose() {
if (this.el_ && this.el_.resetSourceset_) {
this.el_.resetSourceset_();
}
Html5.disposeMediaElement(this.el_);
this.options_ = null;
// tech will handle clearing of the emulated track list
super.dispose();
}
/**
* Modify the media element so that we can detect when
* the source is changed. Fires `sourceset` just after the source has changed
*/
setupSourcesetHandling_() {
setupSourceset(this);
}
/**
* When a captions track is enabled in the iOS Safari native player, all other
* tracks are disabled (including metadata tracks), which nulls all of their
* associated cue points. This will restore metadata tracks to their pre-fullscreen
* state in those cases so that cue points are not needlessly lost.
*
* @private
*/
restoreMetadataTracksInIOSNativePlayer_() {
const textTracks = this.textTracks();
let metadataTracksPreFullscreenState;
// captures a snapshot of every metadata track's current state
const takeMetadataTrackSnapshot = () => {
metadataTracksPreFullscreenState = [];
for (let i = 0; i < textTracks.length; i++) {
const track = textTracks[i];
if (track.kind === 'metadata') {
metadataTracksPreFullscreenState.push({
track,
storedMode: track.mode
});
}
}
};
// snapshot each metadata track's initial state, and update the snapshot
// each time there is a track 'change' event
takeMetadataTrackSnapshot();
textTracks.addEventListener('change', takeMetadataTrackSnapshot);
this.on('dispose', () => textTracks.removeEventListener('change', takeMetadataTrackSnapshot));
const restoreTrackMode = () => {
for (let i = 0; i < metadataTracksPreFullscreenState.length; i++) {
const storedTrack = metadataTracksPreFullscreenState[i];
if (storedTrack.track.mode === 'disabled' && storedTrack.track.mode !== storedTrack.storedMode) {
storedTrack.track.mode = storedTrack.storedMode;
}
}
// we only want this handler to be executed on the first 'change' event
textTracks.removeEventListener('change', restoreTrackMode);
};
// when we enter fullscreen playback, stop updating the snapshot and
// restore all track modes to their pre-fullscreen state
this.on('webkitbeginfullscreen', () => {
textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
// remove the listener before adding it just in case it wasn't previously removed
textTracks.removeEventListener('change', restoreTrackMode);
textTracks.addEventListener('change', restoreTrackMode);
});
// start updating the snapshot again after leaving fullscreen
this.on('webkitendfullscreen', () => {
// remove the listener before adding it just in case it wasn't previously removed
textTracks.removeEventListener('change', takeMetadataTrackSnapshot);
textTracks.addEventListener('change', takeMetadataTrackSnapshot);
// remove the restoreTrackMode handler in case it wasn't triggered during fullscreen playback
textTracks.removeEventListener('change', restoreTrackMode);
});
}
/**
* Attempt to force override of tracks for the given type
*
* @param {string} type - Track type to override, possible values include 'Audio',
* 'Video', and 'Text'.
* @param {boolean} override - If set to true native audio/video will be overridden,
* otherwise native audio/video will potentially be used.
* @private
*/
overrideNative_(type, override) {
// If there is no behavioral change don't add/remove listeners
if (override !== this[`featuresNative${type}Tracks`]) {
return;
}
const lowerCaseType = type.toLowerCase();
if (this[`${lowerCaseType}TracksListeners_`]) {
Object.keys(this[`${lowerCaseType}TracksListeners_`]).forEach(eventName => {
const elTracks = this.el()[`${lowerCaseType}Tracks`];
elTracks.removeEventListener(eventName, this[`${lowerCaseType}TracksListeners_`][eventName]);
});
}
this[`featuresNative${type}Tracks`] = !override;
this[`${lowerCaseType}TracksListeners_`] = null;
this.proxyNativeTracksForType_(lowerCaseType);
}
/**
* Attempt to force override of native audio tracks.
*
* @param {boolean} override - If set to true native audio will be overridden,
* otherwise native audio will potentially be used.
*/
overrideNativeAudioTracks(override) {
this.overrideNative_('Audio', override);
}
/**
* Attempt to force override of native video tracks.
*
* @param {boolean} override - If set to true native video will be overridden,
* otherwise native video will potentially be used.
*/
overrideNativeVideoTracks(override) {
this.overrideNative_('Video', override);
}
/**
* Proxy native track list events for the given type to our track
* lists if the browser we are playing in supports that type of track list.
*
* @param {string} name - Track type; values include 'audio', 'video', and 'text'
* @private
*/
proxyNativeTracksForType_(name) {
const props = NORMAL[name];
const elTracks = this.el()[props.getterName];
const techTracks = this[props.getterName]();
if (!this[`featuresNative${props.capitalName}Tracks`] || !elTracks || !elTracks.addEventListener) {
return;
}
const listeners = {
change: e => {
const event = {
type: 'change',
target: techTracks,
currentTarget: techTracks,
srcElement: techTracks
};
techTracks.trigger(event);
// if we are a text track change event, we should also notify the
// remote text track list. This can potentially cause a false positive
// if we were to get a change event on a non-remote track and
// we triggered the event on the remote text track list which doesn't
// contain that track. However, best practices mean looping through the
// list of tracks and searching for the appropriate mode value, so,
// this shouldn't pose an issue
if (name === 'text') {
this[REMOTE.remoteText.getterName]().trigger(event);
}
},
addtrack(e) {
techTracks.addTrack(e.track);
},
removetrack(e) {
techTracks.removeTrack(e.track);
}
};
const removeOldTracks = function () {
const removeTracks = [];
for (let i = 0; i < techTracks.length; i++) {
let found = false;
for (let j = 0; j < elTracks.length; j++) {
if (elTracks[j] === techTracks[i]) {
found = true;
break;
}
}
if (!found) {
removeTracks.push(techTracks[i]);
}
}
while (removeTracks.length) {
techTracks.removeTrack(removeTracks.shift());
}
};
this[props.getterName + 'Listeners_'] = listeners;
Object.keys(listeners).forEach(eventName => {
const listener = listeners[eventName];
elTracks.addEventListener(eventName, listener);
this.on('dispose', e => elTracks.removeEventListener(eventName, listener));
});
// Remove (native) tracks that are not used anymore
this.on('loadstart', removeOldTracks);
this.on('dispose', e => this.off('loadstart', removeOldTracks));
}
/**
* Proxy all native track list events to our track lists if the browser we are playing
* in supports that type of track list.
*
* @private
*/
proxyNativeTracks_() {
NORMAL.names.forEach(name => {
this.proxyNativeTracksForType_(name);
});
}
/**
* Create the `Html5` Tech's DOM element.
*
* @return {Element}
* The element that gets created.
*/
createEl() {
let el = this.options_.tag;
// Check if this browser supports moving the element into the box.
// On the iPhone video will break if you move the element,
// So we have to create a brand new element.
// If we ingested the player div, we do not need to move the media element.
if (!el || !(this.options_.playerElIngest || this.movingMediaElementInDOM)) {
// If the original tag is still there, clone and remove it.
if (el) {
const clone = el.cloneNode(true);
if (el.parentNode) {
el.parentNode.insertBefore(clone, el);
}
Html5.disposeMediaElement(el);
el = clone;
} else {
el = document.createElement('video');
// determine if native controls should be used
const tagAttributes = this.options_.tag && getAttributes(this.options_.tag);
const attributes = merge$2({}, tagAttributes);
if (!TOUCH_ENABLED || this.options_.nativeControlsForTouch !== true) {
delete attributes.controls;
}
setAttributes(el, Object.assign(attributes, {
id: this.options_.techId,
class: 'vjs-tech'
}));
}
el.playerId = this.options_.playerId;
}
if (typeof this.options_.preload !== 'undefined') {
setAttribute(el, 'preload', this.options_.preload);
}
if (this.options_.disablePictureInPicture !== undefined) {
el.disablePictureInPicture = this.options_.disablePictureInPicture;
}
// Update specific tag settings, in case they were overridden
// `autoplay` has to be *last* so that `muted` and `playsinline` are present
// when iOS/Safari or other browsers attempt to autoplay.
const settingsAttrs = ['loop', 'muted', 'playsinline', 'autoplay'];
for (let i = 0; i < settingsAttrs.length; i++) {
const attr = settingsAttrs[i];
const value = this.options_[attr];
if (typeof value !== 'undefined') {
if (value) {
setAttribute(el, attr, attr);
} else {
removeAttribute(el, attr);
}
el[attr] = value;
}
}
return el;
}
/**
* This will be triggered if the loadstart event has already fired, before videojs was
* ready. Two known examples of when this can happen are:
* 1. If we're loading the playback object after it has started loading
* 2. The media is already playing the (often with autoplay on) then
*
* This function will fire another loadstart so that videojs can catchup.
*
* @fires Tech#loadstart
*
* @return {undefined}
* returns nothing.
*/
handleLateInit_(el) {
if (el.networkState === 0 || el.networkState === 3) {
// The video element hasn't started loading the source yet
// or didn't find a source
return;
}
if (el.readyState === 0) {
// NetworkState is set synchronously BUT loadstart is fired at the
// end of the current stack, usually before setInterval(fn, 0).
// So at this point we know loadstart may have already fired or is
// about to fire, and either way the player hasn't seen it yet.
// We don't want to fire loadstart prematurely here and cause a
// double loadstart so we'll wait and see if it happens between now
// and the next loop, and fire it if not.
// HOWEVER, we also want to make sure it fires before loadedmetadata
// which could also happen between now and the next loop, so we'll
// watch for that also.
let loadstartFired = false;
const setLoadstartFired = function () {
loadstartFired = true;
};
this.on('loadstart', setLoadstartFired);
const triggerLoadstart = function () {
// We did miss the original loadstart. Make sure the player
// sees loadstart before loadedmetadata
if (!loadstartFired) {
this.trigger('loadstart');
}
};
this.on('loadedmetadata', triggerLoadstart);
this.ready(function () {
this.off('loadstart', setLoadstartFired);
this.off('loadedmetadata', triggerLoadstart);
if (!loadstartFired) {
// We did miss the original native loadstart. Fire it now.
this.trigger('loadstart');
}
});
return;
}
// From here on we know that loadstart already fired and we missed it.
// The other readyState events aren't as much of a problem if we double
// them, so not going to go to as much trouble as loadstart to prevent
// that unless we find reason to.
const eventsToTrigger = ['loadstart'];
// loadedmetadata: newly equal to HAVE_METADATA (1) or greater
eventsToTrigger.push('loadedmetadata');
// loadeddata: newly increased to HAVE_CURRENT_DATA (2) or greater
if (el.readyState >= 2) {
eventsToTrigger.push('loadeddata');
}
// canplay: newly increased to HAVE_FUTURE_DATA (3) or greater
if (el.readyState >= 3) {
eventsToTrigger.push('canplay');
}
// canplaythrough: newly equal to HAVE_ENOUGH_DATA (4)
if (el.readyState >= 4) {
eventsToTrigger.push('canplaythrough');
}
// We still need to give the player time to add event listeners
this.ready(function () {
eventsToTrigger.forEach(function (type) {
this.trigger(type);
}, this);
});
}
/**
* Set whether we are scrubbing or not.
* This is used to decide whether we should use `fastSeek` or not.
* `fastSeek` is used to provide trick play on Safari browsers.
*
* @param {boolean} isScrubbing
* - true for we are currently scrubbing
* - false for we are no longer scrubbing
*/
setScrubbing(isScrubbing) {
this.isScrubbing_ = isScrubbing;
}
/**
* Get whether we are scrubbing or not.
*
* @return {boolean} isScrubbing
* - true for we are currently scrubbing
* - false for we are no longer scrubbing
*/
scrubbing() {
return this.isScrubbing_;
}
/**
* Set current time for the `HTML5` tech.
*
* @param {number} seconds
* Set the current time of the media to this.
*/
setCurrentTime(seconds) {
try {
if (this.isScrubbing_ && this.el_.fastSeek && IS_ANY_SAFARI) {
this.el_.fastSeek(seconds);
} else {
this.el_.currentTime = seconds;
}
} catch (e) {
log$1(e, 'Video is not ready. (Video.js)');
// this.warning(VideoJS.warnings.videoNotReady);
}
}
/**
* Get the current duration of the HTML5 media element.
*
* @return {number}
* The duration of the media or 0 if there is no duration.
*/
duration() {
// Android Chrome will report duration as Infinity for VOD HLS until after
// playback has started, which triggers the live display erroneously.
// Return NaN if playback has not started and trigger a durationupdate once
// the duration can be reliably known.
if (this.el_.duration === Infinity && IS_ANDROID && IS_CHROME && this.el_.currentTime === 0) {
// Wait for the first `timeupdate` with currentTime > 0 - there may be
// several with 0
const checkProgress = () => {
if (this.el_.currentTime > 0) {
// Trigger durationchange for genuinely live video
if (this.el_.duration === Infinity) {
this.trigger('durationchange');
}
this.off('timeupdate', checkProgress);
}
};
this.on('timeupdate', checkProgress);
return NaN;
}
return this.el_.duration || NaN;
}
/**
* Get the current width of the HTML5 media element.
*
* @return {number}
* The width of the HTML5 media element.
*/
width() {
return this.el_.offsetWidth;
}
/**
* Get the current height of the HTML5 media element.
*
* @return {number}
* The height of the HTML5 media element.
*/
height() {
return this.el_.offsetHeight;
}
/**
* Proxy iOS `webkitbeginfullscreen` and `webkitendfullscreen` into
* `fullscreenchange` event.
*
* @private
* @fires fullscreenchange
* @listens webkitendfullscreen
* @listens webkitbeginfullscreen
* @listens webkitbeginfullscreen
*/
proxyWebkitFullscreen_() {
if (!('webkitDisplayingFullscreen' in this.el_)) {
return;
}
const endFn = function () {
this.trigger('fullscreenchange', {
isFullscreen: false
});
// Safari will sometimes set controls on the videoelement when existing fullscreen.
if (this.el_.controls && !this.options_.nativeControlsForTouch && this.controls()) {
this.el_.controls = false;
}
};
const beginFn = function () {
if ('webkitPresentationMode' in this.el_ && this.el_.webkitPresentationMode !== 'picture-in-picture') {
this.one('webkitendfullscreen', endFn);
this.trigger('fullscreenchange', {
isFullscreen: true,
// set a flag in case another tech triggers fullscreenchange
nativeIOSFullscreen: true
});
}
};
this.on('webkitbeginfullscreen', beginFn);
this.on('dispose', () => {
this.off('webkitbeginfullscreen', beginFn);
this.off('webkitendfullscreen', endFn);
});
}
/**
* Check if fullscreen is supported on the video el.
*
* @return {boolean}
* - True if fullscreen is supported.
* - False if fullscreen is not supported.
*/
supportsFullScreen() {
return typeof this.el_.webkitEnterFullScreen === 'function';
}
/**
* Request that the `HTML5` Tech enter fullscreen.
*/
enterFullScreen() {
const video = this.el_;
if (video.paused && video.networkState <= video.HAVE_METADATA) {
// attempt to prime the video element for programmatic access
// this isn't necessary on the desktop but shouldn't hurt
silencePromise(this.el_.play());
// playing and pausing synchronously during the transition to fullscreen
// can get iOS ~6.1 devices into a play/pause loop
this.setTimeout(function () {
video.pause();
try {
video.webkitEnterFullScreen();
} catch (e) {
this.trigger('fullscreenerror', e);
}
}, 0);
} else {
try {
video.webkitEnterFullScreen();
} catch (e) {
this.trigger('fullscreenerror', e);
}
}
}
/**
* Request that the `HTML5` Tech exit fullscreen.
*/
exitFullScreen() {
if (!this.el_.webkitDisplayingFullscreen) {
this.trigger('fullscreenerror', new Error('The video is not fullscreen'));
return;
}
this.el_.webkitExitFullScreen();
}
/**
* Create a floating video window always on top of other windows so that users may
* continue consuming media while they interact with other content sites, or
* applications on their device.
*
* @see [Spec]{@link https://wicg.github.io/picture-in-picture}
*
* @return {Promise}
* A promise with a Picture-in-Picture window.
*/
requestPictureInPicture() {
return this.el_.requestPictureInPicture();
}
/**
* Native requestVideoFrameCallback if supported by browser/tech, or fallback
* Don't use rVCF on Safari when DRM is playing, as it doesn't fire
* Needs to be checked later than the constructor
* This will be a false positive for clear sources loaded after a Fairplay source
*
* @param {function} cb function to call
* @return {number} id of request
*/
requestVideoFrameCallback(cb) {
if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
return this.el_.requestVideoFrameCallback(cb);
}
return super.requestVideoFrameCallback(cb);
}
/**
* Native or fallback requestVideoFrameCallback
*
* @param {number} id request id to cancel
*/
cancelVideoFrameCallback(id) {
if (this.featuresVideoFrameCallback && !this.el_.webkitKeys) {
this.el_.cancelVideoFrameCallback(id);
} else {
super.cancelVideoFrameCallback(id);
}
}
/**
* A getter/setter for the `Html5` Tech's source object.
* > Note: Please use {@link Html5#setSource}
*
* @param {Tech~SourceObject} [src]
* The source object you want to set on the `HTML5` techs element.
*
* @return {Tech~SourceObject|undefined}
* - The current source object when a source is not passed in.
* - undefined when setting
*
* @deprecated Since version 5.
*/
src(src) {
if (src === undefined) {
return this.el_.src;
}
// Setting src through `src` instead of `setSrc` will be deprecated
this.setSrc(src);
}
/**
* Reset the tech by removing all sources and then calling
* {@link Html5.resetMediaElement}.
*/
reset() {
Html5.resetMediaElement(this.el_);
}
/**
* Get the current source on the `HTML5` Tech. Falls back to returning the source from
* the HTML5 media element.
*
* @return {Tech~SourceObject}
* The current source object from the HTML5 tech. With a fallback to the
* elements source.
*/
currentSrc() {
if (this.currentSource_) {
return this.currentSource_.src;
}
return this.el_.currentSrc;
}
/**
* Set controls attribute for the HTML5 media Element.
*
* @param {string} val
* Value to set the controls attribute to
*/
setControls(val) {
this.el_.controls = !!val;
}
/**
* Create and returns a remote {@link TextTrack} object.
*
* @param {string} kind
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata)
*
* @param {string} [label]
* Label to identify the text track
*
* @param {string} [language]
* Two letter language abbreviation
*
* @return {TextTrack}
* The TextTrack that gets created.
*/
addTextTrack(kind, label, language) {
if (!this.featuresNativeTextTracks) {
return super.addTextTrack(kind, label, language);
}
return this.el_.addTextTrack(kind, label, language);
}
/**
* Creates either native TextTrack or an emulated TextTrack depending
* on the value of `featuresNativeTextTracks`
*
* @param {Object} options
* The object should contain the options to initialize the TextTrack with.
*
* @param {string} [options.kind]
* `TextTrack` kind (subtitles, captions, descriptions, chapters, or metadata).
*
* @param {string} [options.label]
* Label to identify the text track
*
* @param {string} [options.language]
* Two letter language abbreviation.
*
* @param {boolean} [options.default]
* Default this track to on.
*
* @param {string} [options.id]
* The internal id to assign this track.
*
* @param {string} [options.src]
* A source url for the track.
*
* @return {HTMLTrackElement}
* The track element that gets created.
*/
createRemoteTextTrack(options) {
if (!this.featuresNativeTextTracks) {
return super.createRemoteTextTrack(options);
}
const htmlTrackElement = document.createElement('track');
if (options.kind) {
htmlTrackElement.kind = options.kind;
}
if (options.label) {
htmlTrackElement.label = options.label;
}
if (options.language || options.srclang) {
htmlTrackElement.srclang = options.language || options.srclang;
}
if (options.default) {
htmlTrackElement.default = options.default;
}
if (options.id) {
htmlTrackElement.id = options.id;
}
if (options.src) {
htmlTrackElement.src = options.src;
}
return htmlTrackElement;
}
/**
* Creates a remote text track object and returns an html track element.
*
* @param {Object} options The object should contain values for
* kind, language, label, and src (location of the WebVTT file)
* @param {boolean} [manualCleanup=false] if set to true, the TextTrack
* will not be removed from the TextTrackList and HtmlTrackElementList
* after a source change
* @return {HTMLTrackElement} An Html Track Element.
* This can be an emulated {@link HTMLTrackElement} or a native one.
*
*/
addRemoteTextTrack(options, manualCleanup) {
const htmlTrackElement = super.addRemoteTextTrack(options, manualCleanup);
if (this.featuresNativeTextTracks) {
this.el().appendChild(htmlTrackElement);
}
return htmlTrackElement;
}
/**
* Remove remote `TextTrack` from `TextTrackList` object
*
* @param {TextTrack} track
* `TextTrack` object to remove
*/
removeRemoteTextTrack(track) {
super.removeRemoteTextTrack(track);
if (this.featuresNativeTextTracks) {
const tracks = this.$$('track');
let i = tracks.length;
while (i--) {
if (track === tracks[i] || track === tracks[i].track) {
this.el().removeChild(tracks[i]);
}
}
}
}
/**
* Gets available media playback quality metrics as specified by the W3C's Media
* Playback Quality API.
*
* @see [Spec]{@link https://wicg.github.io/media-playback-quality}
*
* @return {Object}
* An object with supported media playback quality metrics
*/
getVideoPlaybackQuality() {
if (typeof this.el().getVideoPlaybackQuality === 'function') {
return this.el().getVideoPlaybackQuality();
}
const videoPlaybackQuality = {};
if (typeof this.el().webkitDroppedFrameCount !== 'undefined' && typeof this.el().webkitDecodedFrameCount !== 'undefined') {
videoPlaybackQuality.droppedVideoFrames = this.el().webkitDroppedFrameCount;
videoPlaybackQuality.totalVideoFrames = this.el().webkitDecodedFrameCount;
}
if (window.performance) {
videoPlaybackQuality.creationTime = window.performance.now();
}
return videoPlaybackQuality;
}
}
/* HTML5 Support Testing ---------------------------------------------------- */
/**
* Element for testing browser HTML5 media capabilities
*
* @type {Element}
* @constant
* @private
*/
defineLazyProperty(Html5, 'TEST_VID', function () {
if (!isReal()) {
return;
}
const video = document.createElement('video');
const track = document.createElement('track');
track.kind = 'captions';
track.srclang = 'en';
track.label = 'English';
video.appendChild(track);
return video;
});
/**
* Check if HTML5 media is supported by this browser/device.
*
* @return {boolean}
* - True if HTML5 media is supported.
* - False if HTML5 media is not supported.
*/
Html5.isSupported = function () {
// IE with no Media Player is a LIAR! (#984)
try {
Html5.TEST_VID.volume = 0.5;
} catch (e) {
return false;
}
return !!(Html5.TEST_VID && Html5.TEST_VID.canPlayType);
};
/**
* Check if the tech can support the given type
*
* @param {string} type
* The mimetype to check
* @return {string} 'probably', 'maybe', or '' (empty string)
*/
Html5.canPlayType = function (type) {
return Html5.TEST_VID.canPlayType(type);
};
/**
* Check if the tech can support the given source
*
* @param {Object} srcObj
* The source object
* @param {Object} options
* The options passed to the tech
* @return {string} 'probably', 'maybe', or '' (empty string)
*/
Html5.canPlaySource = function (srcObj, options) {
return Html5.canPlayType(srcObj.type);
};
/**
* Check if the volume can be changed in this browser/device.
* Volume cannot be changed in a lot of mobile devices.
* Specifically, it can't be changed from 1 on iOS.
*
* @return {boolean}
* - True if volume can be controlled
* - False otherwise
*/
Html5.canControlVolume = function () {
// IE will error if Windows Media Player not installed #3315
try {
const volume = Html5.TEST_VID.volume;
Html5.TEST_VID.volume = volume / 2 + 0.1;
const canControl = volume !== Html5.TEST_VID.volume;
// With the introduction of iOS 15, there are cases where the volume is read as
// changed but reverts back to its original state at the start of the next tick.
// To determine whether volume can be controlled on iOS,
// a timeout is set and the volume is checked asynchronously.
// Since `features` doesn't currently work asynchronously, the value is manually set.
if (canControl && IS_IOS) {
window.setTimeout(() => {
if (Html5 && Html5.prototype) {
Html5.prototype.featuresVolumeControl = volume !== Html5.TEST_VID.volume;
}
});
// default iOS to false, which will be updated in the timeout above.
return false;
}
return canControl;
} catch (e) {
return false;
}
};
/**
* Check if the volume can be muted in this browser/device.
* Some devices, e.g. iOS, don't allow changing volume
* but permits muting/unmuting.
*
* @return {boolean}
* - True if volume can be muted
* - False otherwise
*/
Html5.canMuteVolume = function () {
try {
const muted = Html5.TEST_VID.muted;
// in some versions of iOS muted property doesn't always
// work, so we want to set both property and attribute
Html5.TEST_VID.muted = !muted;
if (Html5.TEST_VID.muted) {
setAttribute(Html5.TEST_VID, 'muted', 'muted');
} else {
removeAttribute(Html5.TEST_VID, 'muted', 'muted');
}
return muted !== Html5.TEST_VID.muted;
} catch (e) {
return false;
}
};
/**
* Check if the playback rate can be changed in this browser/device.
*
* @return {boolean}
* - True if playback rate can be controlled
* - False otherwise
*/
Html5.canControlPlaybackRate = function () {
// Playback rate API is implemented in Android Chrome, but doesn't do anything
// https://github.com/videojs/video.js/issues/3180
if (IS_ANDROID && IS_CHROME && CHROME_VERSION < 58) {
return false;
}
// IE will error if Windows Media Player not installed #3315
try {
const playbackRate = Html5.TEST_VID.playbackRate;
Html5.TEST_VID.playbackRate = playbackRate / 2 + 0.1;
return playbackRate !== Html5.TEST_VID.playbackRate;
} catch (e) {
return false;
}
};
/**
* Check if we can override a video/audio elements attributes, with
* Object.defineProperty.
*
* @return {boolean}
* - True if builtin attributes can be overridden
* - False otherwise
*/
Html5.canOverrideAttributes = function () {
// if we cannot overwrite the src/innerHTML property, there is no support
// iOS 7 safari for instance cannot do this.
try {
const noop = () => {};
Object.defineProperty(document.createElement('video'), 'src', {
get: noop,
set: noop
});
Object.defineProperty(document.createElement('audio'), 'src', {
get: noop,
set: noop
});
Object.defineProperty(document.createElement('video'), 'innerHTML', {
get: noop,
set: noop
});
Object.defineProperty(document.createElement('audio'), 'innerHTML', {
get: noop,
set: noop
});
} catch (e) {
return false;
}
return true;
};
/**
* Check to see if native `TextTrack`s are supported by this browser/device.
*
* @return {boolean}
* - True if native `TextTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeTextTracks = function () {
return IS_ANY_SAFARI || IS_IOS && IS_CHROME;
};
/**
* Check to see if native `VideoTrack`s are supported by this browser/device
*
* @return {boolean}
* - True if native `VideoTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeVideoTracks = function () {
return !!(Html5.TEST_VID && Html5.TEST_VID.videoTracks);
};
/**
* Check to see if native `AudioTrack`s are supported by this browser/device
*
* @return {boolean}
* - True if native `AudioTrack`s are supported.
* - False otherwise
*/
Html5.supportsNativeAudioTracks = function () {
return !!(Html5.TEST_VID && Html5.TEST_VID.audioTracks);
};
/**
* An array of events available on the Html5 tech.
*
* @private
* @type {Array}
*/
Html5.Events = ['loadstart', 'suspend', 'abort', 'error', 'emptied', 'stalled', 'loadedmetadata', 'loadeddata', 'canplay', 'canplaythrough', 'playing', 'waiting', 'seeking', 'seeked', 'ended', 'durationchange', 'timeupdate', 'progress', 'play', 'pause', 'ratechange', 'resize', 'volumechange'];
/**
* Boolean indicating whether the `Tech` supports volume control.
*
* @type {boolean}
* @default {@link Html5.canControlVolume}
*/
/**
* Boolean indicating whether the `Tech` supports muting volume.
*
* @type {boolean}
* @default {@link Html5.canMuteVolume}
*/
/**
* Boolean indicating whether the `Tech` supports changing the speed at which the media
* plays. Examples:
* - Set player to play 2x (twice) as fast
* - Set player to play 0.5x (half) as fast
*
* @type {boolean}
* @default {@link Html5.canControlPlaybackRate}
*/
/**
* Boolean indicating whether the `Tech` supports the `sourceset` event.
*
* @type {boolean}
* @default
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `TextTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeTextTracks}
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `VideoTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeVideoTracks}
*/
/**
* Boolean indicating whether the `HTML5` tech currently supports native `AudioTrack`s.
*
* @type {boolean}
* @default {@link Html5.supportsNativeAudioTracks}
*/
[['featuresMuteControl', 'canMuteVolume'], ['featuresPlaybackRate', 'canControlPlaybackRate'], ['featuresSourceset', 'canOverrideAttributes'], ['featuresNativeTextTracks', 'supportsNativeTextTracks'], ['featuresNativeVideoTracks', 'supportsNativeVideoTracks'], ['featuresNativeAudioTracks', 'supportsNativeAudioTracks']].forEach(function ([key, fn]) {
defineLazyProperty(Html5.prototype, key, () => Html5[fn](), true);
});
Html5.prototype.featuresVolumeControl = Html5.canControlVolume();
/**
* Boolean indicating whether the `HTML5` tech currently supports the media element
* moving in the DOM. iOS breaks if you move the media element, so this is set this to
* false there. Everywhere else this should be true.
*
* @type {boolean}
* @default
*/
Html5.prototype.movingMediaElementInDOM = !IS_IOS;
// TODO: Previous comment: No longer appears to be used. Can probably be removed.
// Is this true?
/**
* Boolean indicating whether the `HTML5` tech currently supports automatic media resize
* when going into fullscreen.
*
* @type {boolean}
* @default
*/
Html5.prototype.featuresFullscreenResize = true;
/**
* Boolean indicating whether the `HTML5` tech currently supports the progress event.
* If this is false, manual `progress` events will be triggered instead.
*
* @type {boolean}
* @default
*/
Html5.prototype.featuresProgressEvents = true;
/**
* Boolean indicating whether the `HTML5` tech currently supports the timeupdate event.
* If this is false, manual `timeupdate` events will be triggered instead.
*
* @default
*/
Html5.prototype.featuresTimeupdateEvents = true;
/**
* Whether the HTML5 el supports `requestVideoFrameCallback`
*
* @type {boolean}
*/
Html5.prototype.featuresVideoFrameCallback = !!(Html5.TEST_VID && Html5.TEST_VID.requestVideoFrameCallback);
Html5.disposeMediaElement = function (el) {
if (!el) {
return;
}
if (el.parentNode) {
el.parentNode.removeChild(el);
}
// remove any child track or source nodes to prevent their loading
while (el.hasChildNodes()) {
el.removeChild(el.firstChild);
}
// remove any src reference. not setting `src=''` because that causes a warning
// in firefox
el.removeAttribute('src');
// force the media element to update its loading state by calling load()
// however IE on Windows 7N has a bug that throws an error so need a try/catch (#793)
if (typeof el.load === 'function') {
// wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
(function () {
try {
el.load();
} catch (e) {
// not supported
}
})();
}
};
Html5.resetMediaElement = function (el) {
if (!el) {
return;
}
const sources = el.querySelectorAll('source');
let i = sources.length;
while (i--) {
el.removeChild(sources[i]);
}
// remove any src reference.
// not setting `src=''` because that throws an error
el.removeAttribute('src');
if (typeof el.load === 'function') {
// wrapping in an iife so it's not deoptimized (#1060#discussion_r10324473)
(function () {
try {
el.load();
} catch (e) {
// satisfy linter
}
})();
}
};
/* Native HTML5 element property wrapping ----------------------------------- */
// Wrap native boolean attributes with getters that check both property and attribute
// The list is as followed:
// muted, defaultMuted, autoplay, controls, loop, playsinline
[
/**
* Get the value of `muted` from the media element. `muted` indicates
* that the volume for the media should be set to silent. This does not actually change
* the `volume` attribute.
*
* @method Html5#muted
* @return {boolean}
* - True if the value of `volume` should be ignored and the audio set to silent.
* - False if the value of `volume` should be used.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
*/
'muted',
/**
* Get the value of `defaultMuted` from the media element. `defaultMuted` indicates
* whether the media should start muted or not. Only changes the default state of the
* media. `muted` and `defaultMuted` can have different values. {@link Html5#muted} indicates the
* current state.
*
* @method Html5#defaultMuted
* @return {boolean}
* - The value of `defaultMuted` from the media element.
* - True indicates that the media should start muted.
* - False indicates that the media should not start muted
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
*/
'defaultMuted',
/**
* Get the value of `autoplay` from the media element. `autoplay` indicates
* that the media should start to play as soon as the page is ready.
*
* @method Html5#autoplay
* @return {boolean}
* - The value of `autoplay` from the media element.
* - True indicates that the media should start as soon as the page loads.
* - False indicates that the media should not start as soon as the page loads.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
*/
'autoplay',
/**
* Get the value of `controls` from the media element. `controls` indicates
* whether the native media controls should be shown or hidden.
*
* @method Html5#controls
* @return {boolean}
* - The value of `controls` from the media element.
* - True indicates that native controls should be showing.
* - False indicates that native controls should be hidden.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-controls}
*/
'controls',
/**
* Get the value of `loop` from the media element. `loop` indicates
* that the media should return to the start of the media and continue playing once
* it reaches the end.
*
* @method Html5#loop
* @return {boolean}
* - The value of `loop` from the media element.
* - True indicates that playback should seek back to start once
* the end of a media is reached.
* - False indicates that playback should not loop back to the start when the
* end of the media is reached.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
*/
'loop',
/**
* Get the value of `playsinline` from the media element. `playsinline` indicates
* to the browser that non-fullscreen playback is preferred when fullscreen
* playback is the native default, such as in iOS Safari.
*
* @method Html5#playsinline
* @return {boolean}
* - The value of `playsinline` from the media element.
* - True indicates that the media should play inline.
* - False indicates that the media should not play inline.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
*/
'playsinline'].forEach(function (prop) {
Html5.prototype[prop] = function () {
return this.el_[prop] || this.el_.hasAttribute(prop);
};
});
// Wrap native boolean attributes with setters that set both property and attribute
// The list is as followed:
// setMuted, setDefaultMuted, setAutoplay, setLoop, setPlaysinline
// setControls is special-cased above
[
/**
* Set the value of `muted` on the media element. `muted` indicates that the current
* audio level should be silent.
*
* @method Html5#setMuted
* @param {boolean} muted
* - True if the audio should be set to silent
* - False otherwise
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-muted}
*/
'muted',
/**
* Set the value of `defaultMuted` on the media element. `defaultMuted` indicates that the current
* audio level should be silent, but will only effect the muted level on initial playback..
*
* @method Html5.prototype.setDefaultMuted
* @param {boolean} defaultMuted
* - True if the audio should be set to silent
* - False otherwise
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultmuted}
*/
'defaultMuted',
/**
* Set the value of `autoplay` on the media element. `autoplay` indicates
* that the media should start to play as soon as the page is ready.
*
* @method Html5#setAutoplay
* @param {boolean} autoplay
* - True indicates that the media should start as soon as the page loads.
* - False indicates that the media should not start as soon as the page loads.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-autoplay}
*/
'autoplay',
/**
* Set the value of `loop` on the media element. `loop` indicates
* that the media should return to the start of the media and continue playing once
* it reaches the end.
*
* @method Html5#setLoop
* @param {boolean} loop
* - True indicates that playback should seek back to start once
* the end of a media is reached.
* - False indicates that playback should not loop back to the start when the
* end of the media is reached.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-loop}
*/
'loop',
/**
* Set the value of `playsinline` from the media element. `playsinline` indicates
* to the browser that non-fullscreen playback is preferred when fullscreen
* playback is the native default, such as in iOS Safari.
*
* @method Html5#setPlaysinline
* @param {boolean} playsinline
* - True indicates that the media should play inline.
* - False indicates that the media should not play inline.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
*/
'playsinline'].forEach(function (prop) {
Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
this.el_[prop] = v;
if (v) {
this.el_.setAttribute(prop, prop);
} else {
this.el_.removeAttribute(prop);
}
};
});
// Wrap native properties with a getter
// The list is as followed
// paused, currentTime, buffered, volume, poster, preload, error, seeking
// seekable, ended, playbackRate, defaultPlaybackRate, disablePictureInPicture
// played, networkState, readyState, videoWidth, videoHeight, crossOrigin
[
/**
* Get the value of `paused` from the media element. `paused` indicates whether the media element
* is currently paused or not.
*
* @method Html5#paused
* @return {boolean}
* The value of `paused` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-paused}
*/
'paused',
/**
* Get the value of `currentTime` from the media element. `currentTime` indicates
* the current second that the media is at in playback.
*
* @method Html5#currentTime
* @return {number}
* The value of `currentTime` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-currenttime}
*/
'currentTime',
/**
* Get the value of `buffered` from the media element. `buffered` is a `TimeRange`
* object that represents the parts of the media that are already downloaded and
* available for playback.
*
* @method Html5#buffered
* @return {TimeRange}
* The value of `buffered` from the media element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-buffered}
*/
'buffered',
/**
* Get the value of `volume` from the media element. `volume` indicates
* the current playback volume of audio for a media. `volume` will be a value from 0
* (silent) to 1 (loudest and default).
*
* @method Html5#volume
* @return {number}
* The value of `volume` from the media element. Value will be between 0-1.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
*/
'volume',
/**
* Get the value of `poster` from the media element. `poster` indicates
* that the url of an image file that can/will be shown when no media data is available.
*
* @method Html5#poster
* @return {string}
* The value of `poster` from the media element. Value will be a url to an
* image.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-video-poster}
*/
'poster',
/**
* Get the value of `preload` from the media element. `preload` indicates
* what should download before the media is interacted with. It can have the following
* values:
* - none: nothing should be downloaded
* - metadata: poster and the first few frames of the media may be downloaded to get
* media dimensions and other metadata
* - auto: allow the media and metadata for the media to be downloaded before
* interaction
*
* @method Html5#preload
* @return {string}
* The value of `preload` from the media element. Will be 'none', 'metadata',
* or 'auto'.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
*/
'preload',
/**
* Get the value of the `error` from the media element. `error` indicates any
* MediaError that may have occurred during playback. If error returns null there is no
* current error.
*
* @method Html5#error
* @return {MediaError|null}
* The value of `error` from the media element. Will be `MediaError` if there
* is a current error and null otherwise.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-error}
*/
'error',
/**
* Get the value of `seeking` from the media element. `seeking` indicates whether the
* media is currently seeking to a new position or not.
*
* @method Html5#seeking
* @return {boolean}
* - The value of `seeking` from the media element.
* - True indicates that the media is currently seeking to a new position.
* - False indicates that the media is not seeking to a new position at this time.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seeking}
*/
'seeking',
/**
* Get the value of `seekable` from the media element. `seekable` returns a
* `TimeRange` object indicating ranges of time that can currently be `seeked` to.
*
* @method Html5#seekable
* @return {TimeRange}
* The value of `seekable` from the media element. A `TimeRange` object
* indicating the current ranges of time that can be seeked to.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-seekable}
*/
'seekable',
/**
* Get the value of `ended` from the media element. `ended` indicates whether
* the media has reached the end or not.
*
* @method Html5#ended
* @return {boolean}
* - The value of `ended` from the media element.
* - True indicates that the media has ended.
* - False indicates that the media has not ended.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-ended}
*/
'ended',
/**
* Get the value of `playbackRate` from the media element. `playbackRate` indicates
* the rate at which the media is currently playing back. Examples:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5#playbackRate
* @return {number}
* The value of `playbackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'playbackRate',
/**
* Get the value of `defaultPlaybackRate` from the media element. `defaultPlaybackRate` indicates
* the rate at which the media is currently playing back. This value will not indicate the current
* `playbackRate` after playback has started, use {@link Html5#playbackRate} for that.
*
* Examples:
* - if defaultPlaybackRate is set to 2, media will play twice as fast.
* - if defaultPlaybackRate is set to 0.5, media will play half as fast.
*
* @method Html5.prototype.defaultPlaybackRate
* @return {number}
* The value of `defaultPlaybackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'defaultPlaybackRate',
/**
* Get the value of 'disablePictureInPicture' from the video element.
*
* @method Html5#disablePictureInPicture
* @return {boolean} value
* - The value of `disablePictureInPicture` from the video element.
* - True indicates that the video can't be played in Picture-In-Picture mode
* - False indicates that the video can be played in Picture-In-Picture mode
*
* @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
*/
'disablePictureInPicture',
/**
* Get the value of `played` from the media element. `played` returns a `TimeRange`
* object representing points in the media timeline that have been played.
*
* @method Html5#played
* @return {TimeRange}
* The value of `played` from the media element. A `TimeRange` object indicating
* the ranges of time that have been played.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-played}
*/
'played',
/**
* Get the value of `networkState` from the media element. `networkState` indicates
* the current network state. It returns an enumeration from the following list:
* - 0: NETWORK_EMPTY
* - 1: NETWORK_IDLE
* - 2: NETWORK_LOADING
* - 3: NETWORK_NO_SOURCE
*
* @method Html5#networkState
* @return {number}
* The value of `networkState` from the media element. This will be a number
* from the list in the description.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-networkstate}
*/
'networkState',
/**
* Get the value of `readyState` from the media element. `readyState` indicates
* the current state of the media element. It returns an enumeration from the
* following list:
* - 0: HAVE_NOTHING
* - 1: HAVE_METADATA
* - 2: HAVE_CURRENT_DATA
* - 3: HAVE_FUTURE_DATA
* - 4: HAVE_ENOUGH_DATA
*
* @method Html5#readyState
* @return {number}
* The value of `readyState` from the media element. This will be a number
* from the list in the description.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#ready-states}
*/
'readyState',
/**
* Get the value of `videoWidth` from the video element. `videoWidth` indicates
* the current width of the video in css pixels.
*
* @method Html5#videoWidth
* @return {number}
* The value of `videoWidth` from the video element. This will be a number
* in css pixels.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
*/
'videoWidth',
/**
* Get the value of `videoHeight` from the video element. `videoHeight` indicates
* the current height of the video in css pixels.
*
* @method Html5#videoHeight
* @return {number}
* The value of `videoHeight` from the video element. This will be a number
* in css pixels.
*
* @see [Spec] {@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-video-videowidth}
*/
'videoHeight',
/**
* Get the value of `crossOrigin` from the media element. `crossOrigin` indicates
* to the browser that should sent the cookies along with the requests for the
* different assets/playlists
*
* @method Html5#crossOrigin
* @return {string}
* - anonymous indicates that the media should not sent cookies.
* - use-credentials indicates that the media should sent cookies along the requests.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
*/
'crossOrigin'].forEach(function (prop) {
Html5.prototype[prop] = function () {
return this.el_[prop];
};
});
// Wrap native properties with a setter in this format:
// set + toTitleCase(name)
// The list is as follows:
// setVolume, setSrc, setPoster, setPreload, setPlaybackRate, setDefaultPlaybackRate,
// setDisablePictureInPicture, setCrossOrigin
[
/**
* Set the value of `volume` on the media element. `volume` indicates the current
* audio level as a percentage in decimal form. This means that 1 is 100%, 0.5 is 50%, and
* so on.
*
* @method Html5#setVolume
* @param {number} percentAsDecimal
* The volume percent as a decimal. Valid range is from 0-1.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-a-volume}
*/
'volume',
/**
* Set the value of `src` on the media element. `src` indicates the current
* {@link Tech~SourceObject} for the media.
*
* @method Html5#setSrc
* @param {Tech~SourceObject} src
* The source object to set as the current source.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-src}
*/
'src',
/**
* Set the value of `poster` on the media element. `poster` is the url to
* an image file that can/will be shown when no media data is available.
*
* @method Html5#setPoster
* @param {string} poster
* The url to an image that should be used as the `poster` for the media
* element.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-poster}
*/
'poster',
/**
* Set the value of `preload` on the media element. `preload` indicates
* what should download before the media is interacted with. It can have the following
* values:
* - none: nothing should be downloaded
* - metadata: poster and the first few frames of the media may be downloaded to get
* media dimensions and other metadata
* - auto: allow the media and metadata for the media to be downloaded before
* interaction
*
* @method Html5#setPreload
* @param {string} preload
* The value of `preload` to set on the media element. Must be 'none', 'metadata',
* or 'auto'.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#attr-media-preload}
*/
'preload',
/**
* Set the value of `playbackRate` on the media element. `playbackRate` indicates
* the rate at which the media should play back. Examples:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5#setPlaybackRate
* @return {number}
* The value of `playbackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-playbackrate}
*/
'playbackRate',
/**
* Set the value of `defaultPlaybackRate` on the media element. `defaultPlaybackRate` indicates
* the rate at which the media should play back upon initial startup. Changing this value
* after a video has started will do nothing. Instead you should used {@link Html5#setPlaybackRate}.
*
* Example Values:
* - if playbackRate is set to 2, media will play twice as fast.
* - if playbackRate is set to 0.5, media will play half as fast.
*
* @method Html5.prototype.setDefaultPlaybackRate
* @return {number}
* The value of `defaultPlaybackRate` from the media element. A number indicating
* the current playback speed of the media, where 1 is normal speed.
*
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-defaultplaybackrate}
*/
'defaultPlaybackRate',
/**
* Prevents the browser from suggesting a Picture-in-Picture context menu
* or to request Picture-in-Picture automatically in some cases.
*
* @method Html5#setDisablePictureInPicture
* @param {boolean} value
* The true value will disable Picture-in-Picture mode.
*
* @see [Spec]{@link https://w3c.github.io/picture-in-picture/#disable-pip}
*/
'disablePictureInPicture',
/**
* Set the value of `crossOrigin` from the media element. `crossOrigin` indicates
* to the browser that should sent the cookies along with the requests for the
* different assets/playlists
*
* @method Html5#setCrossOrigin
* @param {string} crossOrigin
* - anonymous indicates that the media should not sent cookies.
* - use-credentials indicates that the media should sent cookies along the requests.
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-media-crossorigin}
*/
'crossOrigin'].forEach(function (prop) {
Html5.prototype['set' + toTitleCase$1(prop)] = function (v) {
this.el_[prop] = v;
};
});
// wrap native functions with a function
// The list is as follows:
// pause, load, play
[
/**
* A wrapper around the media elements `pause` function. This will call the `HTML5`
* media elements `pause` function.
*
* @method Html5#pause
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-pause}
*/
'pause',
/**
* A wrapper around the media elements `load` function. This will call the `HTML5`s
* media element `load` function.
*
* @method Html5#load
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-load}
*/
'load',
/**
* A wrapper around the media elements `play` function. This will call the `HTML5`s
* media element `play` function.
*
* @method Html5#play
* @see [Spec]{@link https://www.w3.org/TR/html5/embedded-content-0.html#dom-media-play}
*/
'play'].forEach(function (prop) {
Html5.prototype[prop] = function () {
return this.el_[prop]();
};
});
Tech.withSourceHandlers(Html5);
/**
* Native source handler for Html5, simply passes the source to the media element.
*
* @property {Tech~SourceObject} source
* The source object
*
* @property {Html5} tech
* The instance of the HTML5 tech.
*/
Html5.nativeSourceHandler = {};
/**
* Check if the media element can play the given mime type.
*
* @param {string} type
* The mimetype to check
*
* @return {string}
* 'probably', 'maybe', or '' (empty string)
*/
Html5.nativeSourceHandler.canPlayType = function (type) {
// IE without MediaPlayer throws an error (#519)
try {
return Html5.TEST_VID.canPlayType(type);
} catch (e) {
return '';
}
};
/**
* Check if the media element can handle a source natively.
*
* @param {Tech~SourceObject} source
* The source object
*
* @param {Object} [options]
* Options to be passed to the tech.
*
* @return {string}
* 'probably', 'maybe', or '' (empty string).
*/
Html5.nativeSourceHandler.canHandleSource = function (source, options) {
// If a type was provided we should rely on that
if (source.type) {
return Html5.nativeSourceHandler.canPlayType(source.type);
// If no type, fall back to checking 'video/[EXTENSION]'
} else if (source.src) {
const ext = getFileExtension(source.src);
return Html5.nativeSourceHandler.canPlayType(`video/${ext}`);
}
return '';
};
/**
* Pass the source to the native media element.
*
* @param {Tech~SourceObject} source
* The source object
*
* @param {Html5} tech
* The instance of the Html5 tech
*
* @param {Object} [options]
* The options to pass to the source
*/
Html5.nativeSourceHandler.handleSource = function (source, tech, options) {
tech.setSrc(source.src);
};
/**
* A noop for the native dispose function, as cleanup is not needed.
*/
Html5.nativeSourceHandler.dispose = function () {};
// Register the native source handler
Html5.registerSourceHandler(Html5.nativeSourceHandler);
Tech.registerTech('Html5', Html5);
/**
* @file player.js
*/
/** @import { TimeRange } from './utils/time' */
/** @import HtmlTrackElement from './tracks/html-track-element' */
/**
* @callback PlayerReadyCallback
* @this {Player}
* @returns {void}
*/
// The following tech events are simply re-triggered
// on the player when they happen
const TECH_EVENTS_RETRIGGER = [
/**
* Fired while the user agent is downloading media data.
*
* @event Player#progress
* @type {Event}
*/
/**
* Retrigger the `progress` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechProgress_
* @fires Player#progress
* @listens Tech#progress
*/
'progress',
/**
* Fires when the loading of an audio/video is aborted.
*
* @event Player#abort
* @type {Event}
*/
/**
* Retrigger the `abort` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechAbort_
* @fires Player#abort
* @listens Tech#abort
*/
'abort',
/**
* Fires when the browser is intentionally not getting media data.
*
* @event Player#suspend
* @type {Event}
*/
/**
* Retrigger the `suspend` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechSuspend_
* @fires Player#suspend
* @listens Tech#suspend
*/
'suspend',
/**
* Fires when the current playlist is empty.
*
* @event Player#emptied
* @type {Event}
*/
/**
* Retrigger the `emptied` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechEmptied_
* @fires Player#emptied
* @listens Tech#emptied
*/
'emptied',
/**
* Fires when the browser is trying to get media data, but data is not available.
*
* @event Player#stalled
* @type {Event}
*/
/**
* Retrigger the `stalled` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechStalled_
* @fires Player#stalled
* @listens Tech#stalled
*/
'stalled',
/**
* Fires when the browser has loaded meta data for the audio/video.
*
* @event Player#loadedmetadata
* @type {Event}
*/
/**
* Retrigger the `loadedmetadata` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechLoadedmetadata_
* @fires Player#loadedmetadata
* @listens Tech#loadedmetadata
*/
'loadedmetadata',
/**
* Fires when the browser has loaded the current frame of the audio/video.
*
* @event Player#loadeddata
* @type {event}
*/
/**
* Retrigger the `loadeddata` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechLoaddeddata_
* @fires Player#loadeddata
* @listens Tech#loadeddata
*/
'loadeddata',
/**
* Fires when the current playback position has changed.
*
* @event Player#timeupdate
* @type {event}
*/
/**
* Retrigger the `timeupdate` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechTimeUpdate_
* @fires Player#timeupdate
* @listens Tech#timeupdate
*/
'timeupdate',
/**
* Fires when the video's intrinsic dimensions change
*
* @event Player#resize
* @type {event}
*/
/**
* Retrigger the `resize` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechResize_
* @fires Player#resize
* @listens Tech#resize
*/
'resize',
/**
* Fires when the volume has been changed
*
* @event Player#volumechange
* @type {event}
*/
/**
* Retrigger the `volumechange` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechVolumechange_
* @fires Player#volumechange
* @listens Tech#volumechange
*/
'volumechange',
/**
* Fires when the text track has been changed
*
* @event Player#texttrackchange
* @type {event}
*/
/**
* Retrigger the `texttrackchange` event that was triggered by the {@link Tech}.
*
* @private
* @method Player#handleTechTexttrackchange_
* @fires Player#texttrackchange
* @listens Tech#texttrackchange
*/
'texttrackchange'];
// events to queue when playback rate is zero
// this is a hash for the sole purpose of mapping non-camel-cased event names
// to camel-cased function names
const TECH_EVENTS_QUEUE = {
canplay: 'CanPlay',
canplaythrough: 'CanPlayThrough',
playing: 'Playing',
seeked: 'Seeked'
};
const BREAKPOINT_ORDER = ['tiny', 'xsmall', 'small', 'medium', 'large', 'xlarge', 'huge'];
const BREAKPOINT_CLASSES = {};
// grep: vjs-layout-tiny
// grep: vjs-layout-x-small
// grep: vjs-layout-small
// grep: vjs-layout-medium
// grep: vjs-layout-large
// grep: vjs-layout-x-large
// grep: vjs-layout-huge
BREAKPOINT_ORDER.forEach(k => {
const v = k.charAt(0) === 'x' ? `x-${k.substring(1)}` : k;
BREAKPOINT_CLASSES[k] = `vjs-layout-${v}`;
});
const DEFAULT_BREAKPOINTS = {
tiny: 210,
xsmall: 320,
small: 425,
medium: 768,
large: 1440,
xlarge: 2560,
huge: Infinity
};
/**
* An instance of the `Player` class is created when any of the Video.js setup methods
* are used to initialize a video.
*
* After an instance has been created it can be accessed globally in three ways:
* 1. By calling `videojs.getPlayer('example_video_1');`
* 2. By calling `videojs('example_video_1');` (not recommended)
* 2. By using it directly via `videojs.players.example_video_1;`
*
* @extends Component
* @global
*/
class Player extends Component$1 {
/**
* Create an instance of this class.
*
* @param {Element} tag
* The original video DOM element used for configuring options.
*
* @param {Object} [options]
* Object of option names and values.
*
* @param {PlayerReadyCallback} [ready]
* Ready callback function.
*/
constructor(tag, options, ready) {
// Make sure tag ID exists
// also here.. probably better
tag.id = tag.id || options.id || `vjs_video_${newGUID()}`;
// Set Options
// The options argument overrides options set in the video tag
// which overrides globally set options.
// This latter part coincides with the load order
// (tag must exist before Player)
options = Object.assign(Player.getTagSettings(tag), options);
// Delay the initialization of children because we need to set up
// player properties first, and can't use `this` before `super()`
options.initChildren = false;
// Same with creating the element
options.createEl = false;
// don't auto mixin the evented mixin
options.evented = false;
// we don't want the player to report touch activity on itself
// see enableTouchActivity in Component
options.reportTouchActivity = false;
// If language is not set, get the closest lang attribute
if (!options.language) {
const closest = tag.closest('[lang]');
if (closest) {
options.language = closest.getAttribute('lang');
}
}
// Run base component initializing with new options
super(null, options, ready);
// Create bound methods for document listeners.
this.boundDocumentFullscreenChange_ = e => this.documentFullscreenChange_(e);
this.boundFullWindowOnEscKey_ = e => this.fullWindowOnEscKey(e);
this.boundUpdateStyleEl_ = e => this.updateStyleEl_(e);
this.boundApplyInitTime_ = e => this.applyInitTime_(e);
this.boundUpdateCurrentBreakpoint_ = e => this.updateCurrentBreakpoint_(e);
this.boundHandleTechClick_ = e => this.handleTechClick_(e);
this.boundHandleTechDoubleClick_ = e => this.handleTechDoubleClick_(e);
this.boundHandleTechTouchStart_ = e => this.handleTechTouchStart_(e);
this.boundHandleTechTouchMove_ = e => this.handleTechTouchMove_(e);
this.boundHandleTechTouchEnd_ = e => this.handleTechTouchEnd_(e);
this.boundHandleTechTap_ = e => this.handleTechTap_(e);
this.boundUpdatePlayerHeightOnAudioOnlyMode_ = e => this.updatePlayerHeightOnAudioOnlyMode_(e);
// default isFullscreen_ to false
this.isFullscreen_ = false;
// create logger
this.log = createLogger(this.id_);
// Hold our own reference to fullscreen api so it can be mocked in tests
this.fsApi_ = FullscreenApi;
// Tracks when a tech changes the poster
this.isPosterFromTech_ = false;
// Holds callback info that gets queued when playback rate is zero
// and a seek is happening
this.queuedCallbacks_ = [];
// Turn off API access because we're loading a new tech that might load asynchronously
this.isReady_ = false;
// Init state hasStarted_
this.hasStarted_ = false;
// Init state userActive_
this.userActive_ = false;
// Init debugEnabled_
this.debugEnabled_ = false;
// Init state audioOnlyMode_
this.audioOnlyMode_ = false;
// Init state audioPosterMode_
this.audioPosterMode_ = false;
// Init state audioOnlyCache_
this.audioOnlyCache_ = {
controlBarHeight: null,
playerHeight: null,
hiddenChildren: []
};
// if the global option object was accidentally blown away by
// someone, bail early with an informative error
if (!this.options_ || !this.options_.techOrder || !this.options_.techOrder.length) {
throw new Error('No techOrder specified. Did you overwrite ' + 'videojs.options instead of just changing the ' + 'properties you want to override?');
}
// Store the original tag used to set options
this.tag = tag;
// Store the tag attributes used to restore html5 element
this.tagAttributes = tag && getAttributes(tag);
// Update current language
this.language(this.options_.language);
// Update Supported Languages
if (options.languages) {
// Normalise player option languages to lowercase
const languagesToLower = {};
Object.getOwnPropertyNames(options.languages).forEach(function (name) {
languagesToLower[name.toLowerCase()] = options.languages[name];
});
this.languages_ = languagesToLower;
} else {
this.languages_ = Player.prototype.options_.languages;
}
this.resetCache_();
// Set poster
/** @type string */
this.poster_ = options.poster || '';
// Set controls
/** @type {boolean} */
this.controls_ = !!options.controls;
// Original tag settings stored in options
// now remove immediately so native controls don't flash.
// May be turned back on by HTML5 tech if nativeControlsForTouch is true
tag.controls = false;
tag.removeAttribute('controls');
this.changingSrc_ = false;
this.playCallbacks_ = [];
this.playTerminatedQueue_ = [];
// the attribute overrides the option
if (tag.hasAttribute('autoplay')) {
this.autoplay(true);
} else {
// otherwise use the setter to validate and
// set the correct value.
this.autoplay(this.options_.autoplay);
}
// check plugins
if (options.plugins) {
Object.keys(options.plugins).forEach(name => {
if (typeof this[name] !== 'function') {
throw new Error(`plugin "${name}" does not exist`);
}
});
}
/*
* Store the internal state of scrubbing
*
* @private
* @return {Boolean} True if the user is scrubbing
*/
this.scrubbing_ = false;
this.el_ = this.createEl();
// Make this an evented object and use `el_` as its event bus.
evented(this, {
eventBusKey: 'el_'
});
// listen to document and player fullscreenchange handlers so we receive those events
// before a user can receive them so we can update isFullscreen appropriately.
// make sure that we listen to fullscreenchange events before everything else to make sure that
// our isFullscreen method is updated properly for internal components as well as external.
if (this.fsApi_.requestFullscreen) {
on(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
this.on(this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
}
if (this.fluid_) {
this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
}
// We also want to pass the original player options to each component and plugin
// as well so they don't need to reach back into the player for options later.
// We also need to do another copy of this.options_ so we don't end up with
// an infinite loop.
const playerOptionsCopy = merge$2(this.options_);
// Load plugins
if (options.plugins) {
Object.keys(options.plugins).forEach(name => {
this[name](options.plugins[name]);
});
}
// Enable debug mode to fire debugon event for all plugins.
if (options.debug) {
this.debug(true);
}
this.options_.playerOptions = playerOptionsCopy;
this.middleware_ = [];
this.playbackRates(options.playbackRates);
if (options.experimentalSvgIcons) {
// Add SVG Sprite to the DOM
const parser = new window.DOMParser();
const parsedSVG = parser.parseFromString(icons, 'image/svg+xml');
const errorNode = parsedSVG.querySelector('parsererror');
if (errorNode) {
log$1.warn('Failed to load SVG Icons. Falling back to Font Icons.');
this.options_.experimentalSvgIcons = null;
} else {
const sprite = parsedSVG.documentElement;
sprite.style.display = 'none';
this.el_.appendChild(sprite);
this.addClass('vjs-svg-icons-enabled');
}
}
this.initChildren();
// Set isAudio based on whether or not an audio tag was used
this.isAudio(tag.nodeName.toLowerCase() === 'audio');
// Update controls className. Can't do this when the controls are initially
// set because the element doesn't exist yet.
if (this.controls()) {
this.addClass('vjs-controls-enabled');
} else {
this.addClass('vjs-controls-disabled');
}
// Set ARIA label and region role depending on player type
this.el_.setAttribute('role', 'region');
if (this.isAudio()) {
this.el_.setAttribute('aria-label', this.localize('Audio Player'));
} else {
this.el_.setAttribute('aria-label', this.localize('Video Player'));
}
if (this.isAudio()) {
this.addClass('vjs-audio');
}
// Check if spatial navigation is enabled in the options.
// If enabled, instantiate the SpatialNavigation class.
if (options.spatialNavigation && options.spatialNavigation.enabled) {
this.spatialNavigation = new SpatialNavigation(this);
this.addClass('vjs-spatial-navigation-enabled');
}
// TODO: Make this smarter. Toggle user state between touching/mousing
// using events, since devices can have both touch and mouse events.
// TODO: Make this check be performed again when the window switches between monitors
// (See https://github.com/videojs/video.js/issues/5683)
if (TOUCH_ENABLED) {
this.addClass('vjs-touch-enabled');
}
// iOS Safari has broken hover handling
if (!IS_IOS) {
this.addClass('vjs-workinghover');
}
// Make player easily findable by ID
Player.players[this.id_] = this;
// Add a major version class to aid css in plugins
const majorVersion = version$5.split('.')[0];
this.addClass(`vjs-v${majorVersion}`);
// When the player is first initialized, trigger activity so components
// like the control bar show themselves if needed
this.userActive(true);
this.reportUserActivity();
this.one('play', e => this.listenForUserActivity_(e));
this.on('keydown', e => this.handleKeyDown(e));
this.on('languagechange', e => this.handleLanguagechange(e));
this.breakpoints(this.options_.breakpoints);
this.responsive(this.options_.responsive);
// Calling both the audio mode methods after the player is fully
// setup to be able to listen to the events triggered by them
this.on('ready', () => {
// Calling the audioPosterMode method first so that
// the audioOnlyMode can take precedence when both options are set to true
this.audioPosterMode(this.options_.audioPosterMode);
this.audioOnlyMode(this.options_.audioOnlyMode);
});
}
/**
* Destroys the video player and does any necessary cleanup.
*
* This is especially helpful if you are dynamically adding and removing videos
* to/from the DOM.
*
* @fires Player#dispose
*/
dispose() {
/**
* Called when the player is being disposed of.
*
* @event Player#dispose
* @type {Event}
*/
this.trigger('dispose');
// prevent dispose from being called twice
this.off('dispose');
// Make sure all player-specific document listeners are unbound. This is
off(document, this.fsApi_.fullscreenchange, this.boundDocumentFullscreenChange_);
off(document, 'keydown', this.boundFullWindowOnEscKey_);
if (this.styleEl_ && this.styleEl_.parentNode) {
this.styleEl_.parentNode.removeChild(this.styleEl_);
this.styleEl_ = null;
}
// Kill reference to this player
Player.players[this.id_] = null;
if (this.tag && this.tag.player) {
this.tag.player = null;
}
if (this.el_ && this.el_.player) {
this.el_.player = null;
}
if (this.tech_) {
this.tech_.dispose();
this.isPosterFromTech_ = false;
this.poster_ = '';
}
if (this.playerElIngest_) {
this.playerElIngest_ = null;
}
if (this.tag) {
this.tag = null;
}
clearCacheForPlayer(this);
// remove all event handlers for track lists
// all tracks and track listeners are removed on
// tech dispose
ALL.names.forEach(name => {
const props = ALL[name];
const list = this[props.getterName]();
// if it is not a native list
// we have to manually remove event listeners
if (list && list.off) {
list.off();
}
});
// the actual .el_ is removed here, or replaced if
super.dispose({
restoreEl: this.options_.restoreEl
});
}
/**
* Create the `Player`'s DOM element.
*
* @return {Element}
* The DOM element that gets created.
*/
createEl() {
let tag = this.tag;
let el;
let playerElIngest = this.playerElIngest_ = tag.parentNode && tag.parentNode.hasAttribute && tag.parentNode.hasAttribute('data-vjs-player');
const divEmbed = this.tag.tagName.toLowerCase() === 'video-js';
if (playerElIngest) {
el = this.el_ = tag.parentNode;
} else if (!divEmbed) {
el = this.el_ = super.createEl('div');
}
// Copy over all the attributes from the tag, including ID and class
// ID will now reference player box, not the video tag
const attrs = getAttributes(tag);
if (divEmbed) {
el = this.el_ = tag;
tag = this.tag = document.createElement('video');
while (el.children.length) {
tag.appendChild(el.firstChild);
}
if (!hasClass(el, 'video-js')) {
addClass(el, 'video-js');
}
el.appendChild(tag);
playerElIngest = this.playerElIngest_ = el;
// move properties over from our custom `video-js` element
// to our new `video` element. This will move things like
// `src` or `controls` that were set via js before the player
// was initialized.
Object.keys(el).forEach(k => {
try {
tag[k] = el[k];
} catch (e) {
// we got a a property like outerHTML which we can't actually copy, ignore it
}
});
}
// set tabindex to -1 to remove the video element from the focus order
tag.setAttribute('tabindex', '-1');
attrs.tabindex = '-1';
// Workaround for #4583 on Chrome (on Windows) with JAWS.
// See https://github.com/FreedomScientific/VFO-standards-support/issues/78
// Note that we can't detect if JAWS is being used, but this ARIA attribute
// doesn't change behavior of Chrome if JAWS is not being used
if (IS_CHROME && IS_WINDOWS) {
tag.setAttribute('role', 'application');
attrs.role = 'application';
}
// Remove width/height attrs from tag so CSS can make it 100% width/height
tag.removeAttribute('width');
tag.removeAttribute('height');
if ('width' in attrs) {
delete attrs.width;
}
if ('height' in attrs) {
delete attrs.height;
}
Object.getOwnPropertyNames(attrs).forEach(function (attr) {
// don't copy over the class attribute to the player element when we're in a div embed
// the class is already set up properly in the divEmbed case
// and we want to make sure that the `video-js` class doesn't get lost
if (!(divEmbed && attr === 'class')) {
el.setAttribute(attr, attrs[attr]);
}
if (divEmbed) {
tag.setAttribute(attr, attrs[attr]);
}
});
// Update tag id/class for use as HTML5 playback tech
// Might think we should do this after embedding in container so .vjs-tech class
// doesn't flash 100% width/height, but class only applies with .video-js parent
tag.playerId = tag.id;
tag.id += '_html5_api';
tag.className = 'vjs-tech';
// Make player findable on elements
tag.player = el.player = this;
// Default state of video is paused
this.addClass('vjs-paused');
const deviceClassNames = ['IS_SMART_TV', 'IS_TIZEN', 'IS_WEBOS', 'IS_ANDROID', 'IS_IPAD', 'IS_IPHONE', 'IS_CHROMECAST_RECEIVER'].filter(key => browser[key]).map(key => {
return 'vjs-device-' + key.substring(3).toLowerCase().replace(/\_/g, '-');
});
this.addClass(...deviceClassNames);
// Add a style element in the player that we'll use to set the width/height
// of the player in a way that's still overridable by CSS, just like the
// video element
if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true) {
this.styleEl_ = createStyleElement('vjs-styles-dimensions');
const defaultsStyleEl = $('.vjs-styles-defaults');
const head = $('head');
head.insertBefore(this.styleEl_, defaultsStyleEl ? defaultsStyleEl.nextSibling : head.firstChild);
}
this.fill_ = false;
this.fluid_ = false;
// Pass in the width/height/aspectRatio options which will update the style el
this.width(this.options_.width);
this.height(this.options_.height);
this.fill(this.options_.fill);
this.fluid(this.options_.fluid);
this.aspectRatio(this.options_.aspectRatio);
// support both crossOrigin and crossorigin to reduce confusion and issues around the name
this.crossOrigin(this.options_.crossOrigin || this.options_.crossorigin);
// Hide any links within the video/audio tag,
// because IE doesn't hide them completely from screen readers.
const links = tag.getElementsByTagName('a');
for (let i = 0; i < links.length; i++) {
const linkEl = links.item(i);
addClass(linkEl, 'vjs-hidden');
linkEl.setAttribute('hidden', 'hidden');
}
// insertElFirst seems to cause the networkState to flicker from 3 to 2, so
// keep track of the original for later so we can know if the source originally failed
tag.initNetworkState_ = tag.networkState;
// Wrap video tag in div (el/box) container
if (tag.parentNode && !playerElIngest) {
tag.parentNode.insertBefore(el, tag);
}
// insert the tag as the first child of the player element
// then manually add it to the children array so that this.addChild
// will work properly for other components
//
// Breaks iPhone, fixed in HTML5 setup.
prependTo(tag, el);
this.children_.unshift(tag);
// Set lang attr on player to ensure CSS :lang() in consistent with player
// if it's been set to something different to the doc
this.el_.setAttribute('lang', this.language_);
this.el_.setAttribute('translate', 'no');
this.el_ = el;
return el;
}
/**
* Get or set the `Player`'s crossOrigin option. For the HTML5 player, this
* sets the `crossOrigin` property on the `` tag to control the CORS
* behavior.
*
* @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
*
* @param {string|null} [value]
* The value to set the `Player`'s crossOrigin to. If an argument is
* given, must be one of `'anonymous'` or `'use-credentials'`, or 'null'.
*
* @return {string|null|undefined}
* - The current crossOrigin value of the `Player` when getting.
* - undefined when setting
*/
crossOrigin(value) {
// `null` can be set to unset a value
if (typeof value === 'undefined') {
return this.techGet_('crossOrigin');
}
if (value !== null && value !== 'anonymous' && value !== 'use-credentials') {
log$1.warn(`crossOrigin must be null, "anonymous" or "use-credentials", given "${value}"`);
return;
}
this.techCall_('setCrossOrigin', value);
if (this.posterImage) {
this.posterImage.crossOrigin(value);
}
return;
}
/**
* A getter/setter for the `Player`'s width. Returns the player's configured value.
* To get the current width use `currentWidth()`.
*
* @param {number|string} [value]
* CSS value to set the `Player`'s width to.
*
* @return {number|undefined}
* - The current width of the `Player` when getting.
* - Nothing when setting
*/
width(value) {
return this.dimension('width', value);
}
/**
* A getter/setter for the `Player`'s height. Returns the player's configured value.
* To get the current height use `currentheight()`.
*
* @param {number|string} [value]
* CSS value to set the `Player`'s height to.
*
* @return {number|undefined}
* - The current height of the `Player` when getting.
* - Nothing when setting
*/
height(value) {
return this.dimension('height', value);
}
/**
* A getter/setter for the `Player`'s width & height.
*
* @param {string} dimension
* This string can be:
* - 'width'
* - 'height'
*
* @param {number|string} [value]
* Value for dimension specified in the first argument.
*
* @return {number}
* The dimension arguments value when getting (width/height).
*/
dimension(dimension, value) {
const privDimension = dimension + '_';
if (value === undefined) {
return this[privDimension] || 0;
}
if (value === '' || value === 'auto') {
// If an empty string is given, reset the dimension to be automatic
this[privDimension] = undefined;
this.updateStyleEl_();
return;
}
const parsedVal = parseFloat(value);
if (isNaN(parsedVal)) {
log$1.error(`Improper value "${value}" supplied for for ${dimension}`);
return;
}
this[privDimension] = parsedVal;
this.updateStyleEl_();
}
/**
* A getter/setter/toggler for the vjs-fluid `className` on the `Player`.
*
* Turning this on will turn off fill mode.
*
* @param {boolean} [bool]
* - A value of true adds the class.
* - A value of false removes the class.
* - No value will be a getter.
*
* @return {boolean|undefined}
* - The value of fluid when getting.
* - `undefined` when setting.
*/
fluid(bool) {
if (bool === undefined) {
return !!this.fluid_;
}
this.fluid_ = !!bool;
if (isEvented(this)) {
this.off(['playerreset', 'resize'], this.boundUpdateStyleEl_);
}
if (bool) {
this.addClass('vjs-fluid');
this.fill(false);
addEventedCallback(this, () => {
this.on(['playerreset', 'resize'], this.boundUpdateStyleEl_);
});
} else {
this.removeClass('vjs-fluid');
}
this.updateStyleEl_();
}
/**
* A getter/setter/toggler for the vjs-fill `className` on the `Player`.
*
* Turning this on will turn off fluid mode.
*
* @param {boolean} [bool]
* - A value of true adds the class.
* - A value of false removes the class.
* - No value will be a getter.
*
* @return {boolean|undefined}
* - The value of fluid when getting.
* - `undefined` when setting.
*/
fill(bool) {
if (bool === undefined) {
return !!this.fill_;
}
this.fill_ = !!bool;
if (bool) {
this.addClass('vjs-fill');
this.fluid(false);
} else {
this.removeClass('vjs-fill');
}
}
/**
* Get/Set the aspect ratio
*
* @param {string} [ratio]
* Aspect ratio for player
*
* @return {string|undefined}
* returns the current aspect ratio when getting
*/
/**
* A getter/setter for the `Player`'s aspect ratio.
*
* @param {string} [ratio]
* The value to set the `Player`'s aspect ratio to.
*
* @return {string|undefined}
* - The current aspect ratio of the `Player` when getting.
* - undefined when setting
*/
aspectRatio(ratio) {
if (ratio === undefined) {
return this.aspectRatio_;
}
// Check for width:height format
if (!/^\d+\:\d+$/.test(ratio)) {
throw new Error('Improper value supplied for aspect ratio. The format should be width:height, for example 16:9.');
}
this.aspectRatio_ = ratio;
// We're assuming if you set an aspect ratio you want fluid mode,
// because in fixed mode you could calculate width and height yourself.
this.fluid(true);
this.updateStyleEl_();
}
/**
* Update styles of the `Player` element (height, width and aspect ratio).
*
* @private
* @listens Tech#loadedmetadata
*/
updateStyleEl_() {
if (window.VIDEOJS_NO_DYNAMIC_STYLE === true) {
const width = typeof this.width_ === 'number' ? this.width_ : this.options_.width;
const height = typeof this.height_ === 'number' ? this.height_ : this.options_.height;
const techEl = this.tech_ && this.tech_.el();
if (techEl) {
if (width >= 0) {
techEl.width = width;
}
if (height >= 0) {
techEl.height = height;
}
}
return;
}
let width;
let height;
let aspectRatio;
let idClass;
// The aspect ratio is either used directly or to calculate width and height.
if (this.aspectRatio_ !== undefined && this.aspectRatio_ !== 'auto') {
// Use any aspectRatio that's been specifically set
aspectRatio = this.aspectRatio_;
} else if (this.videoWidth() > 0) {
// Otherwise try to get the aspect ratio from the video metadata
aspectRatio = this.videoWidth() + ':' + this.videoHeight();
} else {
// Or use a default. The video element's is 2:1, but 16:9 is more common.
aspectRatio = '16:9';
}
// Get the ratio as a decimal we can use to calculate dimensions
const ratioParts = aspectRatio.split(':');
const ratioMultiplier = ratioParts[1] / ratioParts[0];
if (this.width_ !== undefined) {
// Use any width that's been specifically set
width = this.width_;
} else if (this.height_ !== undefined) {
// Or calculate the width from the aspect ratio if a height has been set
width = this.height_ / ratioMultiplier;
} else {
// Or use the video's metadata, or use the video el's default of 300
width = this.videoWidth() || 300;
}
if (this.height_ !== undefined) {
// Use any height that's been specifically set
height = this.height_;
} else {
// Otherwise calculate the height from the ratio and the width
height = width * ratioMultiplier;
}
// Ensure the CSS class is valid by starting with an alpha character
if (/^[^a-zA-Z]/.test(this.id())) {
idClass = 'dimensions-' + this.id();
} else {
idClass = this.id() + '-dimensions';
}
// Ensure the right class is still on the player for the style element
this.addClass(idClass);
setTextContent(this.styleEl_, `
.${idClass} {
width: ${width}px;
height: ${height}px;
}
.${idClass}.vjs-fluid:not(.vjs-audio-only-mode) {
padding-top: ${ratioMultiplier * 100}%;
}
`);
}
/**
* Load/Create an instance of playback {@link Tech} including element
* and API methods. Then append the `Tech` element in `Player` as a child.
*
* @param {string} techName
* name of the playback technology
*
* @param {string} source
* video source
*
* @private
*/
loadTech_(techName, source) {
// Pause and remove current playback technology
if (this.tech_) {
this.unloadTech_();
}
const titleTechName = toTitleCase$1(techName);
const camelTechName = techName.charAt(0).toLowerCase() + techName.slice(1);
// get rid of the HTML5 video tag as soon as we are using another tech
if (titleTechName !== 'Html5' && this.tag) {
Tech.getTech('Html5').disposeMediaElement(this.tag);
this.tag.player = null;
this.tag = null;
}
this.techName_ = titleTechName;
// Turn off API access because we're loading a new tech that might load asynchronously
this.isReady_ = false;
let autoplay = this.autoplay();
// if autoplay is a string (or `true` with normalizeAutoplay: true) we pass false to the tech
// because the player is going to handle autoplay on `loadstart`
if (typeof this.autoplay() === 'string' || this.autoplay() === true && this.options_.normalizeAutoplay) {
autoplay = false;
}
// Grab tech-specific options from player options and add source and parent element to use.
const techOptions = {
source,
autoplay,
'nativeControlsForTouch': this.options_.nativeControlsForTouch,
'playerId': this.id(),
'techId': `${this.id()}_${camelTechName}_api`,
'playsinline': this.options_.playsinline,
'preload': this.options_.preload,
'loop': this.options_.loop,
'disablePictureInPicture': this.options_.disablePictureInPicture,
'muted': this.options_.muted,
'poster': this.poster(),
'language': this.language(),
'playerElIngest': this.playerElIngest_ || false,
'vtt.js': this.options_['vtt.js'],
'canOverridePoster': !!this.options_.techCanOverridePoster,
'enableSourceset': this.options_.enableSourceset
};
ALL.names.forEach(name => {
const props = ALL[name];
techOptions[props.getterName] = this[props.privateName];
});
Object.assign(techOptions, this.options_[titleTechName]);
Object.assign(techOptions, this.options_[camelTechName]);
Object.assign(techOptions, this.options_[techName.toLowerCase()]);
if (this.tag) {
techOptions.tag = this.tag;
}
if (source && source.src === this.cache_.src && this.cache_.currentTime > 0) {
techOptions.startTime = this.cache_.currentTime;
}
// Initialize tech instance
const TechClass = Tech.getTech(techName);
if (!TechClass) {
throw new Error(`No Tech named '${titleTechName}' exists! '${titleTechName}' should be registered using videojs.registerTech()'`);
}
this.tech_ = new TechClass(techOptions);
// player.triggerReady is always async, so don't need this to be async
this.tech_.ready(bind_(this, this.handleTechReady_), true);
textTrackConverter.jsonToTextTracks(this.textTracksJson_ || [], this.tech_);
// Listen to all HTML5-defined events and trigger them on the player
TECH_EVENTS_RETRIGGER.forEach(event => {
this.on(this.tech_, event, e => this[`handleTech${toTitleCase$1(event)}_`](e));
});
Object.keys(TECH_EVENTS_QUEUE).forEach(event => {
this.on(this.tech_, event, eventObj => {
if (this.tech_.playbackRate() === 0 && this.tech_.seeking()) {
this.queuedCallbacks_.push({
callback: this[`handleTech${TECH_EVENTS_QUEUE[event]}_`].bind(this),
event: eventObj
});
return;
}
this[`handleTech${TECH_EVENTS_QUEUE[event]}_`](eventObj);
});
});
this.on(this.tech_, 'loadstart', e => this.handleTechLoadStart_(e));
this.on(this.tech_, 'sourceset', e => this.handleTechSourceset_(e));
this.on(this.tech_, 'waiting', e => this.handleTechWaiting_(e));
this.on(this.tech_, 'ended', e => this.handleTechEnded_(e));
this.on(this.tech_, 'seeking', e => this.handleTechSeeking_(e));
this.on(this.tech_, 'play', e => this.handleTechPlay_(e));
this.on(this.tech_, 'pause', e => this.handleTechPause_(e));
this.on(this.tech_, 'durationchange', e => this.handleTechDurationChange_(e));
this.on(this.tech_, 'fullscreenchange', (e, data) => this.handleTechFullscreenChange_(e, data));
this.on(this.tech_, 'fullscreenerror', (e, err) => this.handleTechFullscreenError_(e, err));
this.on(this.tech_, 'enterpictureinpicture', e => this.handleTechEnterPictureInPicture_(e));
this.on(this.tech_, 'leavepictureinpicture', e => this.handleTechLeavePictureInPicture_(e));
this.on(this.tech_, 'error', e => this.handleTechError_(e));
this.on(this.tech_, 'posterchange', e => this.handleTechPosterChange_(e));
this.on(this.tech_, 'textdata', e => this.handleTechTextData_(e));
this.on(this.tech_, 'ratechange', e => this.handleTechRateChange_(e));
this.on(this.tech_, 'loadedmetadata', this.boundUpdateStyleEl_);
this.usingNativeControls(this.techGet_('controls'));
if (this.controls() && !this.usingNativeControls()) {
this.addTechControlsListeners_();
}
// Add the tech element in the DOM if it was not already there
// Make sure to not insert the original video element if using Html5
if (this.tech_.el().parentNode !== this.el() && (titleTechName !== 'Html5' || !this.tag)) {
prependTo(this.tech_.el(), this.el());
}
// Get rid of the original video tag reference after the first tech is loaded
if (this.tag) {
this.tag.player = null;
this.tag = null;
}
}
/**
* Unload and dispose of the current playback {@link Tech}.
*
* @private
*/
unloadTech_() {
// Save the current text tracks so that we can reuse the same text tracks with the next tech
ALL.names.forEach(name => {
const props = ALL[name];
this[props.privateName] = this[props.getterName]();
});
this.textTracksJson_ = textTrackConverter.textTracksToJson(this.tech_);
this.isReady_ = false;
this.tech_.dispose();
this.tech_ = false;
if (this.isPosterFromTech_) {
this.poster_ = '';
this.trigger('posterchange');
}
this.isPosterFromTech_ = false;
}
/**
* Return a reference to the current {@link Tech}.
* It will print a warning by default about the danger of using the tech directly
* but any argument that is passed in will silence the warning.
*
* @param {*} [safety]
* Anything passed in to silence the warning
*
* @return {Tech}
* The Tech
*/
tech(safety) {
if (safety === undefined) {
log$1.warn('Using the tech directly can be dangerous. I hope you know what you\'re doing.\n' + 'See https://github.com/videojs/video.js/issues/2617 for more info.\n');
}
return this.tech_;
}
/**
* An object that contains Video.js version.
*
* @typedef {Object} PlayerVersion
*
* @property {string} 'video.js' - Video.js version
*/
/**
* Returns an object with Video.js version.
*
* @return {PlayerVersion}
* An object with Video.js version.
*/
version() {
return {
'video.js': version$5
};
}
/**
* Set up click and touch listeners for the playback element
*
* - On desktops: a click on the video itself will toggle playback
* - On mobile devices: a click on the video toggles controls
* which is done by toggling the user state between active and
* inactive
* - A tap can signal that a user has become active or has become inactive
* e.g. a quick tap on an iPhone movie should reveal the controls. Another
* quick tap should hide them again (signaling the user is in an inactive
* viewing state)
* - In addition to this, we still want the user to be considered inactive after
* a few seconds of inactivity.
*
* > Note: the only part of iOS interaction we can't mimic with this setup
* is a touch and hold on the video element counting as activity in order to
* keep the controls showing, but that shouldn't be an issue. A touch and hold
* on any controls will still keep the user active
*
* @private
*/
addTechControlsListeners_() {
// Make sure to remove all the previous listeners in case we are called multiple times.
this.removeTechControlsListeners_();
this.on(this.tech_, 'click', this.boundHandleTechClick_);
this.on(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
// If the controls were hidden we don't want that to change without a tap event
// so we'll check if the controls were already showing before reporting user
// activity
this.on(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
this.on(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
this.on(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
// The tap listener needs to come after the touchend listener because the tap
// listener cancels out any reportedUserActivity when setting userActive(false)
this.on(this.tech_, 'tap', this.boundHandleTechTap_);
}
/**
* Remove the listeners used for click and tap controls. This is needed for
* toggling to controls disabled, where a tap/touch should do nothing.
*
* @private
*/
removeTechControlsListeners_() {
// We don't want to just use `this.off()` because there might be other needed
// listeners added by techs that extend this.
this.off(this.tech_, 'tap', this.boundHandleTechTap_);
this.off(this.tech_, 'touchstart', this.boundHandleTechTouchStart_);
this.off(this.tech_, 'touchmove', this.boundHandleTechTouchMove_);
this.off(this.tech_, 'touchend', this.boundHandleTechTouchEnd_);
this.off(this.tech_, 'click', this.boundHandleTechClick_);
this.off(this.tech_, 'dblclick', this.boundHandleTechDoubleClick_);
}
/**
* Player waits for the tech to be ready
*
* @private
*/
handleTechReady_() {
this.triggerReady();
// Keep the same volume as before
if (this.cache_.volume) {
this.techCall_('setVolume', this.cache_.volume);
}
// Look if the tech found a higher resolution poster while loading
this.handleTechPosterChange_();
// Update the duration if available
this.handleTechDurationChange_();
}
/**
* Retrigger the `loadstart` event that was triggered by the {@link Tech}.
*
* @fires Player#loadstart
* @listens Tech#loadstart
* @private
*/
handleTechLoadStart_() {
// TODO: Update to use `emptied` event instead. See #1277.
this.removeClass('vjs-ended', 'vjs-seeking');
// reset the error state
this.error(null);
// Update the duration
this.handleTechDurationChange_();
if (!this.paused()) {
/**
* Fired when the user agent begins looking for media data
*
* @event Player#loadstart
* @type {Event}
*/
this.trigger('loadstart');
} else {
// reset the hasStarted state
this.hasStarted(false);
this.trigger('loadstart');
}
// autoplay happens after loadstart for the browser,
// so we mimic that behavior
this.manualAutoplay_(this.autoplay() === true && this.options_.normalizeAutoplay ? 'play' : this.autoplay());
}
/**
* Handle autoplay string values, rather than the typical boolean
* values that should be handled by the tech. Note that this is not
* part of any specification. Valid values and what they do can be
* found on the autoplay getter at Player#autoplay()
*/
manualAutoplay_(type) {
if (!this.tech_ || typeof type !== 'string') {
return;
}
// Save original muted() value, set muted to true, and attempt to play().
// On promise rejection, restore muted from saved value
const resolveMuted = () => {
const previouslyMuted = this.muted();
this.muted(true);
const restoreMuted = () => {
this.muted(previouslyMuted);
};
// restore muted on play terminatation
this.playTerminatedQueue_.push(restoreMuted);
const mutedPromise = this.play();
if (!isPromise(mutedPromise)) {
return;
}
return mutedPromise.catch(err => {
restoreMuted();
throw new Error(`Rejection at manualAutoplay. Restoring muted value. ${err ? err : ''}`);
});
};
let promise;
// if muted defaults to true
// the only thing we can do is call play
if (type === 'any' && !this.muted()) {
promise = this.play();
if (isPromise(promise)) {
promise = promise.catch(resolveMuted);
}
} else if (type === 'muted' && !this.muted()) {
promise = resolveMuted();
} else {
promise = this.play();
}
if (!isPromise(promise)) {
return;
}
return promise.then(() => {
this.trigger({
type: 'autoplay-success',
autoplay: type
});
}).catch(() => {
this.trigger({
type: 'autoplay-failure',
autoplay: type
});
});
}
/**
* Update the internal source caches so that we return the correct source from
* `src()`, `currentSource()`, and `currentSources()`.
*
* > Note: `currentSources` will not be updated if the source that is passed in exists
* in the current `currentSources` cache.
*
*
* @param {Tech~SourceObject} srcObj
* A string or object source to update our caches to.
*/
updateSourceCaches_(srcObj = '') {
let src = srcObj;
let type = '';
if (typeof src !== 'string') {
src = srcObj.src;
type = srcObj.type;
}
// make sure all the caches are set to default values
// to prevent null checking
this.cache_.source = this.cache_.source || {};
this.cache_.sources = this.cache_.sources || [];
// try to get the type of the src that was passed in
if (src && !type) {
type = findMimetype(this, src);
}
// update `currentSource` cache always
this.cache_.source = merge$2({}, srcObj, {
src,
type
});
const matchingSources = this.cache_.sources.filter(s => s.src && s.src === src);
const sourceElSources = [];
const sourceEls = this.$$('source');
const matchingSourceEls = [];
for (let i = 0; i < sourceEls.length; i++) {
const sourceObj = getAttributes(sourceEls[i]);
sourceElSources.push(sourceObj);
if (sourceObj.src && sourceObj.src === src) {
matchingSourceEls.push(sourceObj.src);
}
}
// if we have matching source els but not matching sources
// the current source cache is not up to date
if (matchingSourceEls.length && !matchingSources.length) {
this.cache_.sources = sourceElSources;
// if we don't have matching source or source els set the
// sources cache to the `currentSource` cache
} else if (!matchingSources.length) {
this.cache_.sources = [this.cache_.source];
}
// update the tech `src` cache
this.cache_.src = src;
}
/**
* *EXPERIMENTAL* Fired when the source is set or changed on the {@link Tech}
* causing the media element to reload.
*
* It will fire for the initial source and each subsequent source.
* This event is a custom event from Video.js and is triggered by the {@link Tech}.
*
* The event object for this event contains a `src` property that will contain the source
* that was available when the event was triggered. This is generally only necessary if Video.js
* is switching techs while the source was being changed.
*
* It is also fired when `load` is called on the player (or media element)
* because the {@link https://html.spec.whatwg.org/multipage/media.html#dom-media-load|specification for `load`}
* says that the resource selection algorithm needs to be aborted and restarted.
* In this case, it is very likely that the `src` property will be set to the
* empty string `""` to indicate we do not know what the source will be but
* that it is changing.
*
* *This event is currently still experimental and may change in minor releases.*
* __To use this, pass `enableSourceset` option to the player.__
*
* @event Player#sourceset
* @type {Event}
* @prop {string} src
* The source url available when the `sourceset` was triggered.
* It will be an empty string if we cannot know what the source is
* but know that the source will change.
*/
/**
* Retrigger the `sourceset` event that was triggered by the {@link Tech}.
*
* @fires Player#sourceset
* @listens Tech#sourceset
* @private
*/
handleTechSourceset_(event) {
// only update the source cache when the source
// was not updated using the player api
if (!this.changingSrc_) {
let updateSourceCaches = src => this.updateSourceCaches_(src);
const playerSrc = this.currentSource().src;
const eventSrc = event.src;
// if we have a playerSrc that is not a blob, and a tech src that is a blob
if (playerSrc && !/^blob:/.test(playerSrc) && /^blob:/.test(eventSrc)) {
// if both the tech source and the player source were updated we assume
// something like @videojs/http-streaming did the sourceset and skip updating the source cache.
if (!this.lastSource_ || this.lastSource_.tech !== eventSrc && this.lastSource_.player !== playerSrc) {
updateSourceCaches = () => {};
}
}
// update the source to the initial source right away
// in some cases this will be empty string
updateSourceCaches(eventSrc);
// if the `sourceset` `src` was an empty string
// wait for a `loadstart` to update the cache to `currentSrc`.
// If a sourceset happens before a `loadstart`, we reset the state
if (!event.src) {
this.tech_.any(['sourceset', 'loadstart'], e => {
// if a sourceset happens before a `loadstart` there
// is nothing to do as this `handleTechSourceset_`
// will be called again and this will be handled there.
if (e.type === 'sourceset') {
return;
}
const techSrc = this.techGet_('currentSrc');
this.lastSource_.tech = techSrc;
this.updateSourceCaches_(techSrc);
});
}
}
this.lastSource_ = {
player: this.currentSource().src,
tech: event.src
};
this.trigger({
src: event.src,
type: 'sourceset'
});
}
/**
* Add/remove the vjs-has-started class
*
*
* @param {boolean} request
* - true: adds the class
* - false: remove the class
*
* @return {boolean}
* the boolean value of hasStarted_
*/
hasStarted(request) {
if (request === undefined) {
// act as getter, if we have no request to change
return this.hasStarted_;
}
if (request === this.hasStarted_) {
return;
}
this.hasStarted_ = request;
if (this.hasStarted_) {
this.addClass('vjs-has-started');
} else {
this.removeClass('vjs-has-started');
}
}
/**
* Fired whenever the media begins or resumes playback
*
* @see [Spec]{@link https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-play}
* @fires Player#play
* @listens Tech#play
* @private
*/
handleTechPlay_() {
this.removeClass('vjs-ended', 'vjs-paused');
this.addClass('vjs-playing');
// hide the poster when the user hits play
this.hasStarted(true);
/**
* Triggered whenever an {@link Tech#play} event happens. Indicates that
* playback has started or resumed.
*
* @event Player#play
* @type {Event}
*/
this.trigger('play');
}
/**
* Retrigger the `ratechange` event that was triggered by the {@link Tech}.
*
* If there were any events queued while the playback rate was zero, fire
* those events now.
*
* @private
* @method Player#handleTechRateChange_
* @fires Player#ratechange
* @listens Tech#ratechange
*/
handleTechRateChange_() {
if (this.tech_.playbackRate() > 0 && this.cache_.lastPlaybackRate === 0) {
this.queuedCallbacks_.forEach(queued => queued.callback(queued.event));
this.queuedCallbacks_ = [];
}
this.cache_.lastPlaybackRate = this.tech_.playbackRate();
/**
* Fires when the playing speed of the audio/video is changed
*
* @event Player#ratechange
* @type {event}
*/
this.trigger('ratechange');
}
/**
* Retrigger the `waiting` event that was triggered by the {@link Tech}.
*
* @fires Player#waiting
* @listens Tech#waiting
* @private
*/
handleTechWaiting_() {
this.addClass('vjs-waiting');
/**
* A readyState change on the DOM element has caused playback to stop.
*
* @event Player#waiting
* @type {Event}
*/
this.trigger('waiting');
// Browsers may emit a timeupdate event after a waiting event. In order to prevent
// premature removal of the waiting class, wait for the time to change.
const timeWhenWaiting = this.currentTime();
const timeUpdateListener = () => {
if (timeWhenWaiting !== this.currentTime()) {
this.removeClass('vjs-waiting');
this.off('timeupdate', timeUpdateListener);
}
};
this.on('timeupdate', timeUpdateListener);
}
/**
* Retrigger the `canplay` event that was triggered by the {@link Tech}.
* > Note: This is not consistent between browsers. See #1351
*
* @fires Player#canplay
* @listens Tech#canplay
* @private
*/
handleTechCanPlay_() {
this.removeClass('vjs-waiting');
/**
* The media has a readyState of HAVE_FUTURE_DATA or greater.
*
* @event Player#canplay
* @type {Event}
*/
this.trigger('canplay');
}
/**
* Retrigger the `canplaythrough` event that was triggered by the {@link Tech}.
*
* @fires Player#canplaythrough
* @listens Tech#canplaythrough
* @private
*/
handleTechCanPlayThrough_() {
this.removeClass('vjs-waiting');
/**
* The media has a readyState of HAVE_ENOUGH_DATA or greater. This means that the
* entire media file can be played without buffering.
*
* @event Player#canplaythrough
* @type {Event}
*/
this.trigger('canplaythrough');
}
/**
* Retrigger the `playing` event that was triggered by the {@link Tech}.
*
* @fires Player#playing
* @listens Tech#playing
* @private
*/
handleTechPlaying_() {
this.removeClass('vjs-waiting');
/**
* The media is no longer blocked from playback, and has started playing.
*
* @event Player#playing
* @type {Event}
*/
this.trigger('playing');
}
/**
* Retrigger the `seeking` event that was triggered by the {@link Tech}.
*
* @fires Player#seeking
* @listens Tech#seeking
* @private
*/
handleTechSeeking_() {
this.addClass('vjs-seeking');
/**
* Fired whenever the player is jumping to a new time
*
* @event Player#seeking
* @type {Event}
*/
this.trigger('seeking');
}
/**
* Retrigger the `seeked` event that was triggered by the {@link Tech}.
*
* @fires Player#seeked
* @listens Tech#seeked
* @private
*/
handleTechSeeked_() {
this.removeClass('vjs-seeking', 'vjs-ended');
/**
* Fired when the player has finished jumping to a new time
*
* @event Player#seeked
* @type {Event}
*/
this.trigger('seeked');
}
/**
* Retrigger the `pause` event that was triggered by the {@link Tech}.
*
* @fires Player#pause
* @listens Tech#pause
* @private
*/
handleTechPause_() {
this.removeClass('vjs-playing');
this.addClass('vjs-paused');
/**
* Fired whenever the media has been paused
*
* @event Player#pause
* @type {Event}
*/
this.trigger('pause');
}
/**
* Retrigger the `ended` event that was triggered by the {@link Tech}.
*
* @fires Player#ended
* @listens Tech#ended
* @private
*/
handleTechEnded_() {
this.addClass('vjs-ended');
this.removeClass('vjs-waiting');
if (this.options_.loop) {
this.currentTime(0);
this.play();
} else if (!this.paused()) {
this.pause();
}
/**
* Fired when the end of the media resource is reached (currentTime == duration)
*
* @event Player#ended
* @type {Event}
*/
this.trigger('ended');
}
/**
* Fired when the duration of the media resource is first known or changed
*
* @listens Tech#durationchange
* @private
*/
handleTechDurationChange_() {
this.duration(this.techGet_('duration'));
}
/**
* Handle a click on the media element to play/pause
*
* @param {Event} event
* the event that caused this function to trigger
*
* @listens Tech#click
* @private
*/
handleTechClick_(event) {
// When controls are disabled a click should not toggle playback because
// the click is considered a control
if (!this.controls_) {
return;
}
if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.click === undefined || this.options_.userActions.click !== false) {
if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.click === 'function') {
this.options_.userActions.click.call(this, event);
} else if (this.paused()) {
silencePromise(this.play());
} else {
this.pause();
}
}
}
/**
* Handle a double-click on the media element to enter/exit fullscreen
*
* @param {Event} event
* the event that caused this function to trigger
*
* @listens Tech#dblclick
* @private
*/
handleTechDoubleClick_(event) {
if (!this.controls_) {
return;
}
// we do not want to toggle fullscreen state
// when double-clicking inside a control bar or a modal
const inAllowedEls = Array.prototype.some.call(this.$$('.vjs-control-bar, .vjs-modal-dialog'), el => el.contains(event.target));
if (!inAllowedEls) {
/*
* options.userActions.doubleClick
*
* If `undefined` or `true`, double-click toggles fullscreen if controls are present
* Set to `false` to disable double-click handling
* Set to a function to substitute an external double-click handler
*/
if (this.options_ === undefined || this.options_.userActions === undefined || this.options_.userActions.doubleClick === undefined || this.options_.userActions.doubleClick !== false) {
if (this.options_ !== undefined && this.options_.userActions !== undefined && typeof this.options_.userActions.doubleClick === 'function') {
this.options_.userActions.doubleClick.call(this, event);
} else if (this.isFullscreen()) {
this.exitFullscreen();
} else {
this.requestFullscreen();
}
}
}
}
/**
* Handle a tap on the media element. It will toggle the user
* activity state, which hides and shows the controls.
*
* @listens Tech#tap
* @private
*/
handleTechTap_() {
this.userActive(!this.userActive());
}
/**
* Handle touch to start
*
* @listens Tech#touchstart
* @private
*/
handleTechTouchStart_() {
this.userWasActive = this.userActive();
}
/**
* Handle touch to move
*
* @listens Tech#touchmove
* @private
*/
handleTechTouchMove_() {
if (this.userWasActive) {
this.reportUserActivity();
}
}
/**
* Handle touch to end
*
* @param {Event} event
* the touchend event that triggered
* this function
*
* @listens Tech#touchend
* @private
*/
handleTechTouchEnd_(event) {
// Stop the mouse events from also happening
if (event.cancelable) {
event.preventDefault();
}
}
/**
* @private
*/
toggleFullscreenClass_() {
if (this.isFullscreen()) {
this.addClass('vjs-fullscreen');
} else {
this.removeClass('vjs-fullscreen');
}
}
/**
* when the document fschange event triggers it calls this
*/
documentFullscreenChange_(e) {
const targetPlayer = e.target.player;
// if another player was fullscreen
// do a null check for targetPlayer because older firefox's would put document as e.target
if (targetPlayer && targetPlayer !== this) {
return;
}
const el = this.el();
let isFs = document[this.fsApi_.fullscreenElement] === el;
if (!isFs && el.matches) {
isFs = el.matches(':' + this.fsApi_.fullscreen);
}
this.isFullscreen(isFs);
}
/**
* Handle Tech Fullscreen Change
*
* @param {Event} event
* the fullscreenchange event that triggered this function
*
* @param {Object} data
* the data that was sent with the event
*
* @private
* @listens Tech#fullscreenchange
* @fires Player#fullscreenchange
*/
handleTechFullscreenChange_(event, data) {
if (data) {
if (data.nativeIOSFullscreen) {
this.addClass('vjs-ios-native-fs');
this.tech_.one('webkitendfullscreen', () => {
this.removeClass('vjs-ios-native-fs');
});
}
this.isFullscreen(data.isFullscreen);
}
}
handleTechFullscreenError_(event, err) {
this.trigger('fullscreenerror', err);
}
/**
* @private
*/
togglePictureInPictureClass_() {
if (this.isInPictureInPicture()) {
this.addClass('vjs-picture-in-picture');
} else {
this.removeClass('vjs-picture-in-picture');
}
}
/**
* Handle Tech Enter Picture-in-Picture.
*
* @param {Event} event
* the enterpictureinpicture event that triggered this function
*
* @private
* @listens Tech#enterpictureinpicture
*/
handleTechEnterPictureInPicture_(event) {
this.isInPictureInPicture(true);
}
/**
* Handle Tech Leave Picture-in-Picture.
*
* @param {Event} event
* the leavepictureinpicture event that triggered this function
*
* @private
* @listens Tech#leavepictureinpicture
*/
handleTechLeavePictureInPicture_(event) {
this.isInPictureInPicture(false);
}
/**
* Fires when an error occurred during the loading of an audio/video.
*
* @private
* @listens Tech#error
*/
handleTechError_() {
const error = this.tech_.error();
if (error) {
this.error(error);
}
}
/**
* Retrigger the `textdata` event that was triggered by the {@link Tech}.
*
* @fires Player#textdata
* @listens Tech#textdata
* @private
*/
handleTechTextData_() {
let data = null;
if (arguments.length > 1) {
data = arguments[1];
}
/**
* Fires when we get a textdata event from tech
*
* @event Player#textdata
* @type {Event}
*/
this.trigger('textdata', data);
}
/**
* Get object for cached values.
*
* @return {Object}
* get the current object cache
*/
getCache() {
return this.cache_;
}
/**
* Resets the internal cache object.
*
* Using this function outside the player constructor or reset method may
* have unintended side-effects.
*
* @private
*/
resetCache_() {
this.cache_ = {
// Right now, the currentTime is not _really_ cached because it is always
// retrieved from the tech (see: currentTime). However, for completeness,
// we set it to zero here to ensure that if we do start actually caching
// it, we reset it along with everything else.
currentTime: 0,
initTime: 0,
inactivityTimeout: this.options_.inactivityTimeout,
duration: NaN,
lastVolume: 1,
lastPlaybackRate: this.defaultPlaybackRate(),
media: null,
src: '',
source: {},
sources: [],
playbackRates: [],
volume: 1
};
}
/**
* Pass values to the playback tech
*
* @param {string} [method]
* the method to call
*
* @param {Object} [arg]
* the argument to pass
*
* @private
*/
techCall_(method, arg) {
// If it's not ready yet, call method when it is
this.ready(function () {
if (method in allowedSetters) {
return set(this.middleware_, this.tech_, method, arg);
} else if (method in allowedMediators) {
return mediate(this.middleware_, this.tech_, method, arg);
}
try {
if (this.tech_) {
this.tech_[method](arg);
}
} catch (e) {
log$1(e);
throw e;
}
}, true);
}
/**
* Mediate attempt to call playback tech method
* and return the value of the method called.
*
* @param {string} method
* Tech method
*
* @return {*}
* Value returned by the tech method called, undefined if tech
* is not ready or tech method is not present
*
* @private
*/
techGet_(method) {
if (!this.tech_ || !this.tech_.isReady_) {
return;
}
if (method in allowedGetters) {
return get(this.middleware_, this.tech_, method);
} else if (method in allowedMediators) {
return mediate(this.middleware_, this.tech_, method);
}
// Log error when playback tech object is present but method
// is undefined or unavailable
try {
return this.tech_[method]();
} catch (e) {
// When building additional tech libs, an expected method may not be defined yet
if (this.tech_[method] === undefined) {
log$1(`Video.js: ${method} method not defined for ${this.techName_} playback technology.`, e);
throw e;
}
// When a method isn't available on the object it throws a TypeError
if (e.name === 'TypeError') {
log$1(`Video.js: ${method} unavailable on ${this.techName_} playback technology element.`, e);
this.tech_.isReady_ = false;
throw e;
}
// If error unknown, just log and throw
log$1(e);
throw e;
}
}
/**
* Attempt to begin playback at the first opportunity.
*
* @return {Promise|undefined}
* Returns a promise if the browser supports Promises (or one
* was passed in as an option). This promise will be resolved on
* the return value of play. If this is undefined it will fulfill the
* promise chain otherwise the promise chain will be fulfilled when
* the promise from play is fulfilled.
*/
play() {
return new Promise(resolve => {
this.play_(resolve);
});
}
/**
* The actual logic for play, takes a callback that will be resolved on the
* return value of play. This allows us to resolve to the play promise if there
* is one on modern browsers.
*
* @private
* @param {Function} [callback]
* The callback that should be called when the techs play is actually called
*/
play_(callback = silencePromise) {
this.playCallbacks_.push(callback);
const isSrcReady = Boolean(!this.changingSrc_ && (this.src() || this.currentSrc()));
const isSafariOrIOS = Boolean(IS_ANY_SAFARI || IS_IOS);
// treat calls to play_ somewhat like the `one` event function
if (this.waitToPlay_) {
this.off(['ready', 'loadstart'], this.waitToPlay_);
this.waitToPlay_ = null;
}
// if the player/tech is not ready or the src itself is not ready
// queue up a call to play on `ready` or `loadstart`
if (!this.isReady_ || !isSrcReady) {
this.waitToPlay_ = e => {
this.play_();
};
this.one(['ready', 'loadstart'], this.waitToPlay_);
// if we are in Safari, there is a high chance that loadstart will trigger after the gesture timeperiod
// in that case, we need to prime the video element by calling load so it'll be ready in time
if (!isSrcReady && isSafariOrIOS) {
this.load();
}
return;
}
// If the player/tech is ready and we have a source, we can attempt playback.
const val = this.techGet_('play');
// For native playback, reset the progress bar if we get a play call from a replay.
const isNativeReplay = isSafariOrIOS && this.hasClass('vjs-ended');
if (isNativeReplay) {
this.resetProgressBar_();
}
// play was terminated if the returned value is null
if (val === null) {
this.runPlayTerminatedQueue_();
} else {
this.runPlayCallbacks_(val);
}
}
/**
* These functions will be run when if play is terminated. If play
* runPlayCallbacks_ is run these function will not be run. This allows us
* to differentiate between a terminated play and an actual call to play.
*/
runPlayTerminatedQueue_() {
const queue = this.playTerminatedQueue_.slice(0);
this.playTerminatedQueue_ = [];
queue.forEach(function (q) {
q();
});
}
/**
* When a callback to play is delayed we have to run these
* callbacks when play is actually called on the tech. This function
* runs the callbacks that were delayed and accepts the return value
* from the tech.
*
* @param {undefined|Promise} val
* The return value from the tech.
*/
runPlayCallbacks_(val) {
const callbacks = this.playCallbacks_.slice(0);
this.playCallbacks_ = [];
// clear play terminatedQueue since we finished a real play
this.playTerminatedQueue_ = [];
callbacks.forEach(function (cb) {
cb(val);
});
}
/**
* Pause the video playback
*/
pause() {
this.techCall_('pause');
}
/**
* Check if the player is paused or has yet to play
*
* @return {boolean}
* - false: if the media is currently playing
* - true: if media is not currently playing
*/
paused() {
// The initial state of paused should be true (in Safari it's actually false)
return this.techGet_('paused') === false ? false : true;
}
/**
* Get a TimeRange object representing the current ranges of time that the user
* has played.
*
* @return {TimeRange}
* A time range object that represents all the increments of time that have
* been played.
*/
played() {
return this.techGet_('played') || createTimeRanges$1(0, 0);
}
/**
* Sets or returns whether or not the user is "scrubbing". Scrubbing is
* when the user has clicked the progress bar handle and is
* dragging it along the progress bar.
*
* @param {boolean} [isScrubbing]
* whether the user is or is not scrubbing
*
* @return {boolean|undefined}
* - The value of scrubbing when getting
* - Nothing when setting
*/
scrubbing(isScrubbing) {
if (typeof isScrubbing === 'undefined') {
return this.scrubbing_;
}
this.scrubbing_ = !!isScrubbing;
this.techCall_('setScrubbing', this.scrubbing_);
if (isScrubbing) {
this.addClass('vjs-scrubbing');
} else {
this.removeClass('vjs-scrubbing');
}
}
/**
* Get or set the current time (in seconds)
*
* @param {number|string} [seconds]
* The time to seek to in seconds
*
* @return {number|undefined}
* - the current time in seconds when getting
* - Nothing when setting
*/
currentTime(seconds) {
if (seconds === undefined) {
// cache last currentTime and return. default to 0 seconds
//
// Caching the currentTime is meant to prevent a massive amount of reads on the tech's
// currentTime when scrubbing, but may not provide much performance benefit after all.
// Should be tested. Also something has to read the actual current time or the cache will
// never get updated.
this.cache_.currentTime = this.techGet_('currentTime') || 0;
return this.cache_.currentTime;
}
if (seconds < 0) {
seconds = 0;
}
if (!this.isReady_ || this.changingSrc_ || !this.tech_ || !this.tech_.isReady_) {
this.cache_.initTime = seconds;
this.off('canplay', this.boundApplyInitTime_);
this.one('canplay', this.boundApplyInitTime_);
return;
}
this.techCall_('setCurrentTime', seconds);
this.cache_.initTime = 0;
if (isFinite(seconds)) {
this.cache_.currentTime = Number(seconds);
}
}
/**
* Apply the value of initTime stored in cache as currentTime.
*
* @private
*/
applyInitTime_() {
this.currentTime(this.cache_.initTime);
}
/**
* Normally gets the length in time of the video in seconds;
* in all but the rarest use cases an argument will NOT be passed to the method
*
* > **NOTE**: The video must have started loading before the duration can be
* known, and depending on preload behaviour may not be known until the video starts
* playing.
*
* @fires Player#durationchange
*
* @param {number} [seconds]
* The duration of the video to set in seconds
*
* @return {number|undefined}
* - The duration of the video in seconds when getting
* - Nothing when setting
*/
duration(seconds) {
if (seconds === undefined) {
// return NaN if the duration is not known
return this.cache_.duration !== undefined ? this.cache_.duration : NaN;
}
seconds = parseFloat(seconds);
// Standardize on Infinity for signaling video is live
if (seconds < 0) {
seconds = Infinity;
}
if (seconds !== this.cache_.duration) {
// Cache the last set value for optimized scrubbing
this.cache_.duration = seconds;
if (seconds === Infinity) {
this.addClass('vjs-live');
} else {
this.removeClass('vjs-live');
}
if (!isNaN(seconds)) {
// Do not fire durationchange unless the duration value is known.
// @see [Spec]{@link https://www.w3.org/TR/2011/WD-html5-20110113/video.html#media-element-load-algorithm}
/**
* @event Player#durationchange
* @type {Event}
*/
this.trigger('durationchange');
}
}
}
/**
* Calculates how much time is left in the video. Not part
* of the native video API.
*
* @return {number}
* The time remaining in seconds
*/
remainingTime() {
return this.duration() - this.currentTime();
}
/**
* A remaining time function that is intended to be used when
* the time is to be displayed directly to the user.
*
* @return {number}
* The rounded time remaining in seconds
*/
remainingTimeDisplay() {
return Math.floor(this.duration()) - Math.floor(this.currentTime());
}
//
// Kind of like an array of portions of the video that have been downloaded.
/**
* Get a TimeRange object with an array of the times of the video
* that have been downloaded. If you just want the percent of the
* video that's been downloaded, use bufferedPercent.
*
* @see [Buffered Spec]{@link http://dev.w3.org/html5/spec/video.html#dom-media-buffered}
*
* @return {TimeRange}
* A mock {@link TimeRanges} object (following HTML spec)
*/
buffered() {
let buffered = this.techGet_('buffered');
if (!buffered || !buffered.length) {
buffered = createTimeRanges$1(0, 0);
}
return buffered;
}
/**
* Get the TimeRanges of the media that are currently available
* for seeking to.
*
* @see [Seekable Spec]{@link https://html.spec.whatwg.org/multipage/media.html#dom-media-seekable}
*
* @return {TimeRange}
* A mock {@link TimeRanges} object (following HTML spec)
*/
seekable() {
let seekable = this.techGet_('seekable');
if (!seekable || !seekable.length) {
seekable = createTimeRanges$1(0, 0);
}
return seekable;
}
/**
* Returns whether the player is in the "seeking" state.
*
* @return {boolean} True if the player is in the seeking state, false if not.
*/
seeking() {
return this.techGet_('seeking');
}
/**
* Returns whether the player is in the "ended" state.
*
* @return {boolean} True if the player is in the ended state, false if not.
*/
ended() {
return this.techGet_('ended');
}
/**
* Returns the current state of network activity for the element, from
* the codes in the list below.
* - NETWORK_EMPTY (numeric value 0)
* The element has not yet been initialised. All attributes are in
* their initial states.
* - NETWORK_IDLE (numeric value 1)
* The element's resource selection algorithm is active and has
* selected a resource, but it is not actually using the network at
* this time.
* - NETWORK_LOADING (numeric value 2)
* The user agent is actively trying to download data.
* - NETWORK_NO_SOURCE (numeric value 3)
* The element's resource selection algorithm is active, but it has
* not yet found a resource to use.
*
* @see https://html.spec.whatwg.org/multipage/embedded-content.html#network-states
* @return {number} the current network activity state
*/
networkState() {
return this.techGet_('networkState');
}
/**
* Returns a value that expresses the current state of the element
* with respect to rendering the current playback position, from the
* codes in the list below.
* - HAVE_NOTHING (numeric value 0)
* No information regarding the media resource is available.
* - HAVE_METADATA (numeric value 1)
* Enough of the resource has been obtained that the duration of the
* resource is available.
* - HAVE_CURRENT_DATA (numeric value 2)
* Data for the immediate current playback position is available.
* - HAVE_FUTURE_DATA (numeric value 3)
* Data for the immediate current playback position is available, as
* well as enough data for the user agent to advance the current
* playback position in the direction of playback.
* - HAVE_ENOUGH_DATA (numeric value 4)
* The user agent estimates that enough data is available for
* playback to proceed uninterrupted.
*
* @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-readystate
* @return {number} the current playback rendering state
*/
readyState() {
return this.techGet_('readyState');
}
/**
* Get the percent (as a decimal) of the video that's been downloaded.
* This method is not a part of the native HTML video API.
*
* @return {number}
* A decimal between 0 and 1 representing the percent
* that is buffered 0 being 0% and 1 being 100%
*/
bufferedPercent() {
return bufferedPercent(this.buffered(), this.duration());
}
/**
* Get the ending time of the last buffered time range
* This is used in the progress bar to encapsulate all time ranges.
*
* @return {number}
* The end of the last buffered time range
*/
bufferedEnd() {
const buffered = this.buffered();
const duration = this.duration();
let end = buffered.end(buffered.length - 1);
if (end > duration) {
end = duration;
}
return end;
}
/**
* Get or set the current volume of the media
*
* @param {number} [percentAsDecimal]
* The new volume as a decimal percent:
* - 0 is muted/0%/off
* - 1.0 is 100%/full
* - 0.5 is half volume or 50%
*
* @return {number|undefined}
* The current volume as a percent when getting
*/
volume(percentAsDecimal) {
let vol;
if (percentAsDecimal !== undefined) {
// Force value to between 0 and 1
vol = Math.max(0, Math.min(1, percentAsDecimal));
this.cache_.volume = vol;
this.techCall_('setVolume', vol);
if (vol > 0) {
this.lastVolume_(vol);
}
return;
}
// Default to 1 when returning current volume.
vol = parseFloat(this.techGet_('volume'));
return isNaN(vol) ? 1 : vol;
}
/**
* Get the current muted state, or turn mute on or off
*
* @param {boolean} [muted]
* - true to mute
* - false to unmute
*
* @return {boolean|undefined}
* - true if mute is on and getting
* - false if mute is off and getting
* - nothing if setting
*/
muted(muted) {
if (muted !== undefined) {
this.techCall_('setMuted', muted);
return;
}
return this.techGet_('muted') || false;
}
/**
* Get the current defaultMuted state, or turn defaultMuted on or off. defaultMuted
* indicates the state of muted on initial playback.
*
* ```js
* var myPlayer = videojs('some-player-id');
*
* myPlayer.src("http://www.example.com/path/to/video.mp4");
*
* // get, should be false
* console.log(myPlayer.defaultMuted());
* // set to true
* myPlayer.defaultMuted(true);
* // get should be true
* console.log(myPlayer.defaultMuted());
* ```
*
* @param {boolean} [defaultMuted]
* - true to mute
* - false to unmute
*
* @return {boolean|undefined}
* - true if defaultMuted is on and getting
* - false if defaultMuted is off and getting
* - Nothing when setting
*/
defaultMuted(defaultMuted) {
if (defaultMuted !== undefined) {
this.techCall_('setDefaultMuted', defaultMuted);
}
return this.techGet_('defaultMuted') || false;
}
/**
* Get the last volume, or set it
*
* @param {number} [percentAsDecimal]
* The new last volume as a decimal percent:
* - 0 is muted/0%/off
* - 1.0 is 100%/full
* - 0.5 is half volume or 50%
*
* @return {number|undefined}
* - The current value of lastVolume as a percent when getting
* - Nothing when setting
*
* @private
*/
lastVolume_(percentAsDecimal) {
if (percentAsDecimal !== undefined && percentAsDecimal !== 0) {
this.cache_.lastVolume = percentAsDecimal;
return;
}
return this.cache_.lastVolume;
}
/**
* Check if current tech can support native fullscreen
* (e.g. with built in controls like iOS)
*
* @return {boolean}
* if native fullscreen is supported
*/
supportsFullScreen() {
return this.techGet_('supportsFullScreen') || false;
}
/**
* Check if the player is in fullscreen mode or tell the player that it
* is or is not in fullscreen mode.
*
* > NOTE: As of the latest HTML5 spec, isFullscreen is no longer an official
* property and instead document.fullscreenElement is used. But isFullscreen is
* still a valuable property for internal player workings.
*
* @param {boolean} [isFS]
* Set the players current fullscreen state
*
* @return {boolean|undefined}
* - true if fullscreen is on and getting
* - false if fullscreen is off and getting
* - Nothing when setting
*/
isFullscreen(isFS) {
if (isFS !== undefined) {
const oldValue = this.isFullscreen_;
this.isFullscreen_ = Boolean(isFS);
// if we changed fullscreen state and we're in prefixed mode, trigger fullscreenchange
// this is the only place where we trigger fullscreenchange events for older browsers
// fullWindow mode is treated as a prefixed event and will get a fullscreenchange event as well
if (this.isFullscreen_ !== oldValue && this.fsApi_.prefixed) {
/**
* @event Player#fullscreenchange
* @type {Event}
*/
this.trigger('fullscreenchange');
}
this.toggleFullscreenClass_();
return;
}
return this.isFullscreen_;
}
/**
* Increase the size of the video to full screen
* In some browsers, full screen is not supported natively, so it enters
* "full window mode", where the video fills the browser window.
* In browsers and devices that support native full screen, sometimes the
* browser's default controls will be shown, and not the Video.js custom skin.
* This includes most mobile devices (iOS, Android) and older versions of
* Safari.
*
* @param {Object} [fullscreenOptions]
* Override the player fullscreen options
*
* @fires Player#fullscreenchange
*/
requestFullscreen(fullscreenOptions) {
if (this.isInPictureInPicture()) {
this.exitPictureInPicture();
}
const self = this;
return new Promise((resolve, reject) => {
function offHandler() {
self.off('fullscreenerror', errorHandler);
self.off('fullscreenchange', changeHandler);
}
function changeHandler() {
offHandler();
resolve();
}
function errorHandler(e, err) {
offHandler();
reject(err);
}
self.one('fullscreenchange', changeHandler);
self.one('fullscreenerror', errorHandler);
const promise = self.requestFullscreenHelper_(fullscreenOptions);
if (promise) {
promise.then(offHandler, offHandler);
promise.then(resolve, reject);
}
});
}
requestFullscreenHelper_(fullscreenOptions) {
let fsOptions;
// Only pass fullscreen options to requestFullscreen in spec-compliant browsers.
// Use defaults or player configured option unless passed directly to this method.
if (!this.fsApi_.prefixed) {
fsOptions = this.options_.fullscreen && this.options_.fullscreen.options || {};
if (fullscreenOptions !== undefined) {
fsOptions = fullscreenOptions;
}
}
// This method works as follows:
// 1. if a fullscreen api is available, use it
// 1. call requestFullscreen with potential options
// 2. if we got a promise from above, use it to update isFullscreen()
// 2. otherwise, if the tech supports fullscreen, call `enterFullScreen` on it.
// This is particularly used for iPhone, older iPads, and non-safari browser on iOS.
// 3. otherwise, use "fullWindow" mode
if (this.fsApi_.requestFullscreen) {
const promise = this.el_[this.fsApi_.requestFullscreen](fsOptions);
// Even on browsers with promise support this may not return a promise
if (promise) {
promise.then(() => this.isFullscreen(true), () => this.isFullscreen(false));
}
return promise;
} else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
// we can't take the video.js controls fullscreen but we can go fullscreen
// with native controls
this.techCall_('enterFullScreen');
} else {
// fullscreen isn't supported so we'll just stretch the video element to
// fill the viewport
this.enterFullWindow();
}
}
/**
* Return the video to its normal size after having been in full screen mode
*
* @fires Player#fullscreenchange
*/
exitFullscreen() {
const self = this;
return new Promise((resolve, reject) => {
function offHandler() {
self.off('fullscreenerror', errorHandler);
self.off('fullscreenchange', changeHandler);
}
function changeHandler() {
offHandler();
resolve();
}
function errorHandler(e, err) {
offHandler();
reject(err);
}
self.one('fullscreenchange', changeHandler);
self.one('fullscreenerror', errorHandler);
const promise = self.exitFullscreenHelper_();
if (promise) {
promise.then(offHandler, offHandler);
// map the promise to our resolve/reject methods
promise.then(resolve, reject);
}
});
}
exitFullscreenHelper_() {
if (this.fsApi_.requestFullscreen) {
const promise = document[this.fsApi_.exitFullscreen]();
// Even on browsers with promise support this may not return a promise
if (promise) {
// we're splitting the promise here, so, we want to catch the
// potential error so that this chain doesn't have unhandled errors
silencePromise(promise.then(() => this.isFullscreen(false)));
}
return promise;
} else if (this.tech_.supportsFullScreen() && !this.options_.preferFullWindow === true) {
this.techCall_('exitFullScreen');
} else {
this.exitFullWindow();
}
}
/**
* When fullscreen isn't supported we can stretch the
* video container to as wide as the browser will let us.
*
* @fires Player#enterFullWindow
*/
enterFullWindow() {
this.isFullscreen(true);
this.isFullWindow = true;
// Storing original doc overflow value to return to when fullscreen is off
this.docOrigOverflow = document.documentElement.style.overflow;
// Add listener for esc key to exit fullscreen
on(document, 'keydown', this.boundFullWindowOnEscKey_);
// Hide any scroll bars
document.documentElement.style.overflow = 'hidden';
// Apply fullscreen styles
addClass(document.body, 'vjs-full-window');
/**
* @event Player#enterFullWindow
* @type {Event}
*/
this.trigger('enterFullWindow');
}
/**
* Check for call to either exit full window or
* full screen on ESC key
*
* @param {string} event
* Event to check for key press
*/
fullWindowOnEscKey(event) {
if (event.key === 'Escape') {
if (this.isFullscreen() === true) {
if (!this.isFullWindow) {
this.exitFullscreen();
} else {
this.exitFullWindow();
}
}
}
}
/**
* Exit full window
*
* @fires Player#exitFullWindow
*/
exitFullWindow() {
this.isFullscreen(false);
this.isFullWindow = false;
off(document, 'keydown', this.boundFullWindowOnEscKey_);
// Unhide scroll bars.
document.documentElement.style.overflow = this.docOrigOverflow;
// Remove fullscreen styles
removeClass(document.body, 'vjs-full-window');
// Resize the box, controller, and poster to original sizes
// this.positionAll();
/**
* @event Player#exitFullWindow
* @type {Event}
*/
this.trigger('exitFullWindow');
}
/**
* Get or set disable Picture-in-Picture mode.
*
* @param {boolean} [value]
* - true will disable Picture-in-Picture mode
* - false will enable Picture-in-Picture mode
*/
disablePictureInPicture(value) {
if (value === undefined) {
return this.techGet_('disablePictureInPicture');
}
this.techCall_('setDisablePictureInPicture', value);
this.options_.disablePictureInPicture = value;
this.trigger('disablepictureinpicturechanged');
}
/**
* Check if the player is in Picture-in-Picture mode or tell the player that it
* is or is not in Picture-in-Picture mode.
*
* @param {boolean} [isPiP]
* Set the players current Picture-in-Picture state
*
* @return {boolean|undefined}
* - true if Picture-in-Picture is on and getting
* - false if Picture-in-Picture is off and getting
* - nothing if setting
*/
isInPictureInPicture(isPiP) {
if (isPiP !== undefined) {
this.isInPictureInPicture_ = !!isPiP;
this.togglePictureInPictureClass_();
return;
}
return !!this.isInPictureInPicture_;
}
/**
* Create a floating video window always on top of other windows so that users may
* continue consuming media while they interact with other content sites, or
* applications on their device.
*
* This can use document picture-in-picture or element picture in picture
*
* Set `enableDocumentPictureInPicture` to `true` to use docPiP on a supported browser
* Else set `disablePictureInPicture` to `false` to disable elPiP on a supported browser
*
*
* @see [Spec]{@link https://w3c.github.io/picture-in-picture/}
* @see [Spec]{@link https://wicg.github.io/document-picture-in-picture/}
*
* @fires Player#enterpictureinpicture
*
* @return {Promise}
* A promise with a Picture-in-Picture window.
*/
requestPictureInPicture() {
if (this.options_.enableDocumentPictureInPicture && window.documentPictureInPicture) {
const pipContainer = document.createElement(this.el().tagName);
pipContainer.classList = this.el().classList;
pipContainer.classList.add('vjs-pip-container');
if (this.posterImage) {
pipContainer.appendChild(this.posterImage.el().cloneNode(true));
}
if (this.titleBar) {
pipContainer.appendChild(this.titleBar.el().cloneNode(true));
}
pipContainer.appendChild(createEl('p', {
className: 'vjs-pip-text'
}, {}, this.localize('Playing in picture-in-picture')));
return window.documentPictureInPicture.requestWindow({
// The aspect ratio won't be correct, Chrome bug https://crbug.com/1407629
width: this.videoWidth(),
height: this.videoHeight()
}).then(pipWindow => {
copyStyleSheetsToWindow(pipWindow);
this.el_.parentNode.insertBefore(pipContainer, this.el_);
pipWindow.document.body.appendChild(this.el_);
pipWindow.document.body.classList.add('vjs-pip-window');
this.player_.isInPictureInPicture(true);
this.player_.trigger({
type: 'enterpictureinpicture',
pipWindow
});
// Listen for the PiP closing event to move the video back.
pipWindow.addEventListener('pagehide', event => {
const pipVideo = event.target.querySelector('.video-js');
pipContainer.parentNode.replaceChild(pipVideo, pipContainer);
this.player_.isInPictureInPicture(false);
this.player_.trigger('leavepictureinpicture');
});
return pipWindow;
});
}
if ('pictureInPictureEnabled' in document && this.disablePictureInPicture() === false) {
/**
* This event fires when the player enters picture in picture mode
*
* @event Player#enterpictureinpicture
* @type {Event}
*/
return this.techGet_('requestPictureInPicture');
}
return Promise.reject('No PiP mode is available');
}
/**
* Exit Picture-in-Picture mode.
*
* @see [Spec]{@link https://wicg.github.io/picture-in-picture}
*
* @fires Player#leavepictureinpicture
*
* @return {Promise}
* A promise.
*/
exitPictureInPicture() {
if (window.documentPictureInPicture && window.documentPictureInPicture.window) {
// With documentPictureInPicture, Player#leavepictureinpicture is fired in the pagehide handler
window.documentPictureInPicture.window.close();
return Promise.resolve();
}
if ('pictureInPictureEnabled' in document) {
/**
* This event fires when the player leaves picture in picture mode
*
* @event Player#leavepictureinpicture
* @type {Event}
*/
return document.exitPictureInPicture();
}
}
/**
* Called when this Player has focus and a key gets pressed down, or when
* any Component of this player receives a key press that it doesn't handle.
* This allows player-wide hotkeys (either as defined below, or optionally
* by an external function).
*
* @param {KeyboardEvent} event
* The `keydown` event that caused this function to be called.
*
* @listens keydown
*/
handleKeyDown(event) {
const {
userActions
} = this.options_;
// Bail out if hotkeys are not configured.
if (!userActions || !userActions.hotkeys) {
return;
}
// Function that determines whether or not to exclude an element from
// hotkeys handling.
const excludeElement = el => {
const tagName = el.tagName.toLowerCase();
// The first and easiest test is for `contenteditable` elements.
if (el.isContentEditable) {
return true;
}
// Inputs matching these types will still trigger hotkey handling as
// they are not text inputs.
const allowedInputTypes = ['button', 'checkbox', 'hidden', 'radio', 'reset', 'submit'];
if (tagName === 'input') {
return allowedInputTypes.indexOf(el.type) === -1;
}
// The final test is by tag name. These tags will be excluded entirely.
const excludedTags = ['textarea'];
return excludedTags.indexOf(tagName) !== -1;
};
// Bail out if the user is focused on an interactive form element.
if (excludeElement(this.el_.ownerDocument.activeElement)) {
return;
}
if (typeof userActions.hotkeys === 'function') {
userActions.hotkeys.call(this, event);
} else {
this.handleHotkeys(event);
}
}
/**
* Called when this Player receives a hotkey keydown event.
* Supported player-wide hotkeys are:
*
* f - toggle fullscreen
* m - toggle mute
* k or Space - toggle play/pause
*
* @param {Event} event
* The `keydown` event that caused this function to be called.
*/
handleHotkeys(event) {
const hotkeys = this.options_.userActions ? this.options_.userActions.hotkeys : {};
// set fullscreenKey, muteKey, playPauseKey from `hotkeys`, use defaults if not set
const {
fullscreenKey = keydownEvent => event.key.toLowerCase() === 'f',
muteKey = keydownEvent => event.key.toLowerCase() === 'm',
playPauseKey = keydownEvent => event.key.toLowerCase() === 'k' || event.key.toLowerCase() === ' '
} = hotkeys;
if (fullscreenKey.call(this, event)) {
event.preventDefault();
event.stopPropagation();
const FSToggle = Component$1.getComponent('FullscreenToggle');
if (document[this.fsApi_.fullscreenEnabled] !== false) {
FSToggle.prototype.handleClick.call(this, event);
}
} else if (muteKey.call(this, event)) {
event.preventDefault();
event.stopPropagation();
const MuteToggle = Component$1.getComponent('MuteToggle');
MuteToggle.prototype.handleClick.call(this, event);
} else if (playPauseKey.call(this, event)) {
event.preventDefault();
event.stopPropagation();
const PlayToggle = Component$1.getComponent('PlayToggle');
PlayToggle.prototype.handleClick.call(this, event);
}
}
/**
* Check whether the player can play a given mimetype
*
* @see https://www.w3.org/TR/2011/WD-html5-20110113/video.html#dom-navigator-canplaytype
*
* @param {string} type
* The mimetype to check
*
* @return {string}
* 'probably', 'maybe', or '' (empty string)
*/
canPlayType(type) {
let can;
// Loop through each playback technology in the options order
for (let i = 0, j = this.options_.techOrder; i < j.length; i++) {
const techName = j[i];
let tech = Tech.getTech(techName);
// Support old behavior of techs being registered as components.
// Remove once that deprecated behavior is removed.
if (!tech) {
tech = Component$1.getComponent(techName);
}
// Check if the current tech is defined before continuing
if (!tech) {
log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
continue;
}
// Check if the browser supports this technology
if (tech.isSupported()) {
can = tech.canPlayType(type);
if (can) {
return can;
}
}
}
return '';
}
/**
* Select source based on tech-order or source-order
* Uses source-order selection if `options.sourceOrder` is truthy. Otherwise,
* defaults to tech-order selection
*
* @param {Array} sources
* The sources for a media asset
*
* @return {Object|boolean}
* Object of source and tech order or false
*/
selectSource(sources) {
// Get only the techs specified in `techOrder` that exist and are supported by the
// current platform
const techs = this.options_.techOrder.map(techName => {
return [techName, Tech.getTech(techName)];
}).filter(([techName, tech]) => {
// Check if the current tech is defined before continuing
if (tech) {
// Check if the browser supports this technology
return tech.isSupported();
}
log$1.error(`The "${techName}" tech is undefined. Skipped browser support check for that tech.`);
return false;
});
// Iterate over each `innerArray` element once per `outerArray` element and execute
// `tester` with both. If `tester` returns a non-falsy value, exit early and return
// that value.
const findFirstPassingTechSourcePair = function (outerArray, innerArray, tester) {
let found;
outerArray.some(outerChoice => {
return innerArray.some(innerChoice => {
found = tester(outerChoice, innerChoice);
if (found) {
return true;
}
});
});
return found;
};
let foundSourceAndTech;
const flip = fn => (a, b) => fn(b, a);
const finder = ([techName, tech], source) => {
if (tech.canPlaySource(source, this.options_[techName.toLowerCase()])) {
return {
source,
tech: techName
};
}
};
// Depending on the truthiness of `options.sourceOrder`, we swap the order of techs and sources
// to select from them based on their priority.
if (this.options_.sourceOrder) {
// Source-first ordering
foundSourceAndTech = findFirstPassingTechSourcePair(sources, techs, flip(finder));
} else {
// Tech-first ordering
foundSourceAndTech = findFirstPassingTechSourcePair(techs, sources, finder);
}
return foundSourceAndTech || false;
}
/**
* Executes source setting and getting logic
*
* @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
* A SourceObject, an array of SourceObjects, or a string referencing
* a URL to a media source. It is _highly recommended_ that an object
* or array of objects is used here, so that source selection
* algorithms can take the `type` into account.
*
* If not provided, this method acts as a getter.
* @param {boolean} [isRetry]
* Indicates whether this is being called internally as a result of a retry
*
* @return {string|undefined}
* If the `source` argument is missing, returns the current source
* URL. Otherwise, returns nothing/undefined.
*/
handleSrc_(source, isRetry) {
// getter usage
if (typeof source === 'undefined') {
return this.cache_.src || '';
}
// Reset retry behavior for new source
if (this.resetRetryOnError_) {
this.resetRetryOnError_();
}
// filter out invalid sources and turn our source into
// an array of source objects
const sources = filterSource(source);
// if a source was passed in then it is invalid because
// it was filtered to a zero length Array. So we have to
// show an error
if (!sources.length) {
this.setTimeout(function () {
this.error({
code: 4,
message: this.options_.notSupportedMessage
});
}, 0);
return;
}
// initial sources
this.changingSrc_ = true;
// Only update the cached source list if we are not retrying a new source after error,
// since in that case we want to include the failed source(s) in the cache
if (!isRetry) {
this.cache_.sources = sources;
}
this.updateSourceCaches_(sources[0]);
// middlewareSource is the source after it has been changed by middleware
setSource(this, sources[0], (middlewareSource, mws) => {
this.middleware_ = mws;
// since sourceSet is async we have to update the cache again after we select a source since
// the source that is selected could be out of order from the cache update above this callback.
if (!isRetry) {
this.cache_.sources = sources;
}
this.updateSourceCaches_(middlewareSource);
const err = this.src_(middlewareSource);
if (err) {
if (sources.length > 1) {
return this.handleSrc_(sources.slice(1));
}
this.changingSrc_ = false;
// We need to wrap this in a timeout to give folks a chance to add error event handlers
this.setTimeout(function () {
this.error({
code: 4,
message: this.options_.notSupportedMessage
});
}, 0);
// we could not find an appropriate tech, but let's still notify the delegate that this is it
// this needs a better comment about why this is needed
this.triggerReady();
return;
}
setTech(mws, this.tech_);
});
// Try another available source if this one fails before playback.
if (sources.length > 1) {
const retry = () => {
// Remove the error modal
this.error(null);
this.handleSrc_(sources.slice(1), true);
};
const stopListeningForErrors = () => {
this.off('error', retry);
};
this.one('error', retry);
this.one('playing', stopListeningForErrors);
this.resetRetryOnError_ = () => {
this.off('error', retry);
this.off('playing', stopListeningForErrors);
};
}
}
/**
* Get or set the video source.
*
* @param {Tech~SourceObject|Tech~SourceObject[]|string} [source]
* A SourceObject, an array of SourceObjects, or a string referencing
* a URL to a media source. It is _highly recommended_ that an object
* or array of objects is used here, so that source selection
* algorithms can take the `type` into account.
*
* If not provided, this method acts as a getter.
*
* @return {string|undefined}
* If the `source` argument is missing, returns the current source
* URL. Otherwise, returns nothing/undefined.
*/
src(source) {
return this.handleSrc_(source, false);
}
/**
* Set the source object on the tech, returns a boolean that indicates whether
* there is a tech that can play the source or not
*
* @param {Tech~SourceObject} source
* The source object to set on the Tech
*
* @return {boolean}
* - True if there is no Tech to playback this source
* - False otherwise
*
* @private
*/
src_(source) {
const sourceTech = this.selectSource([source]);
if (!sourceTech) {
return true;
}
if (!titleCaseEquals(sourceTech.tech, this.techName_)) {
this.changingSrc_ = true;
// load this technology with the chosen source
this.loadTech_(sourceTech.tech, sourceTech.source);
this.tech_.ready(() => {
this.changingSrc_ = false;
});
return false;
}
// wait until the tech is ready to set the source
// and set it synchronously if possible (#2326)
this.ready(function () {
// The setSource tech method was added with source handlers
// so older techs won't support it
// We need to check the direct prototype for the case where subclasses
// of the tech do not support source handlers
if (this.tech_.constructor.prototype.hasOwnProperty('setSource')) {
this.techCall_('setSource', source);
} else {
this.techCall_('src', source.src);
}
this.changingSrc_ = false;
}, true);
return false;
}
/**
* Begin loading the src data.
*/
load() {
// Workaround to use the load method with the VHS.
// Does not cover the case when the load method is called directly from the mediaElement.
if (this.tech_ && this.tech_.vhs) {
this.src(this.currentSource());
return;
}
this.techCall_('load');
}
/**
* Reset the player. Loads the first tech in the techOrder,
* removes all the text tracks in the existing `tech`,
* and calls `reset` on the `tech`.
*/
reset() {
if (this.paused()) {
this.doReset_();
} else {
const playPromise = this.play();
silencePromise(playPromise.then(() => this.doReset_()));
}
}
doReset_() {
if (this.tech_) {
this.tech_.clearTracks('text');
}
this.removeClass('vjs-playing');
this.addClass('vjs-paused');
this.resetCache_();
this.poster('');
this.loadTech_(this.options_.techOrder[0], null);
this.techCall_('reset');
this.resetControlBarUI_();
this.error(null);
if (this.titleBar) {
this.titleBar.update({
title: undefined,
description: undefined
});
}
if (isEvented(this)) {
this.trigger('playerreset');
}
}
/**
* Reset Control Bar's UI by calling sub-methods that reset
* all of Control Bar's components
*/
resetControlBarUI_() {
this.resetProgressBar_();
this.resetPlaybackRate_();
this.resetVolumeBar_();
}
/**
* Reset tech's progress so progress bar is reset in the UI
*/
resetProgressBar_() {
this.currentTime(0);
const {
currentTimeDisplay,
durationDisplay,
progressControl,
remainingTimeDisplay
} = this.controlBar || {};
const {
seekBar
} = progressControl || {};
if (currentTimeDisplay) {
currentTimeDisplay.updateContent();
}
if (durationDisplay) {
durationDisplay.updateContent();
}
if (remainingTimeDisplay) {
remainingTimeDisplay.updateContent();
}
if (seekBar) {
seekBar.update();
if (seekBar.loadProgressBar) {
seekBar.loadProgressBar.update();
}
}
}
/**
* Reset Playback ratio
*/
resetPlaybackRate_() {
this.playbackRate(this.defaultPlaybackRate());
this.handleTechRateChange_();
}
/**
* Reset Volume bar
*/
resetVolumeBar_() {
this.volume(1.0);
this.trigger('volumechange');
}
/**
* Returns all of the current source objects.
*
* @return {Tech~SourceObject[]}
* The current source objects
*/
currentSources() {
const source = this.currentSource();
const sources = [];
// assume `{}` or `{ src }`
if (Object.keys(source).length !== 0) {
sources.push(source);
}
return this.cache_.sources || sources;
}
/**
* Returns the current source object.
*
* @return {Tech~SourceObject}
* The current source object
*/
currentSource() {
return this.cache_.source || {};
}
/**
* Returns the fully qualified URL of the current source value e.g. http://mysite.com/video.mp4
* Can be used in conjunction with `currentType` to assist in rebuilding the current source object.
*
* @return {string}
* The current source
*/
currentSrc() {
return this.currentSource() && this.currentSource().src || '';
}
/**
* Get the current source type e.g. video/mp4
* This can allow you rebuild the current source object so that you could load the same
* source and tech later
*
* @return {string}
* The source MIME type
*/
currentType() {
return this.currentSource() && this.currentSource().type || '';
}
/**
* Get or set the preload attribute
*
* @param {'none'|'auto'|'metadata'} [value]
* Preload mode to pass to tech
*
* @return {string|undefined}
* - The preload attribute value when getting
* - Nothing when setting
*/
preload(value) {
if (value !== undefined) {
this.techCall_('setPreload', value);
this.options_.preload = value;
return;
}
return this.techGet_('preload');
}
/**
* Get or set the autoplay option. When this is a boolean it will
* modify the attribute on the tech. When this is a string the attribute on
* the tech will be removed and `Player` will handle autoplay on loadstarts.
*
* @param {boolean|'play'|'muted'|'any'} [value]
* - true: autoplay using the browser behavior
* - false: do not autoplay
* - 'play': call play() on every loadstart
* - 'muted': call muted() then play() on every loadstart
* - 'any': call play() on every loadstart. if that fails call muted() then play().
* - *: values other than those listed here will be set `autoplay` to true
*
* @return {boolean|string|undefined}
* - The current value of autoplay when getting
* - Nothing when setting
*/
autoplay(value) {
// getter usage
if (value === undefined) {
return this.options_.autoplay || false;
}
let techAutoplay;
// if the value is a valid string set it to that, or normalize `true` to 'play', if need be
if (typeof value === 'string' && /(any|play|muted)/.test(value) || value === true && this.options_.normalizeAutoplay) {
this.options_.autoplay = value;
this.manualAutoplay_(typeof value === 'string' ? value : 'play');
techAutoplay = false;
// any falsy value sets autoplay to false in the browser,
// lets do the same
} else if (!value) {
this.options_.autoplay = false;
// any other value (ie truthy) sets autoplay to true
} else {
this.options_.autoplay = true;
}
techAutoplay = typeof techAutoplay === 'undefined' ? this.options_.autoplay : techAutoplay;
// if we don't have a tech then we do not queue up
// a setAutoplay call on tech ready. We do this because the
// autoplay option will be passed in the constructor and we
// do not need to set it twice
if (this.tech_) {
this.techCall_('setAutoplay', techAutoplay);
}
}
/**
* Set or unset the playsinline attribute.
* Playsinline tells the browser that non-fullscreen playback is preferred.
*
* @param {boolean} [value]
* - true means that we should try to play inline by default
* - false means that we should use the browser's default playback mode,
* which in most cases is inline. iOS Safari is a notable exception
* and plays fullscreen by default.
*
* @return {string|undefined}
* - the current value of playsinline
* - Nothing when setting
*
* @see [Spec]{@link https://html.spec.whatwg.org/#attr-video-playsinline}
*/
playsinline(value) {
if (value !== undefined) {
this.techCall_('setPlaysinline', value);
this.options_.playsinline = value;
}
return this.techGet_('playsinline');
}
/**
* Get or set the loop attribute on the video element.
*
* @param {boolean} [value]
* - true means that we should loop the video
* - false means that we should not loop the video
*
* @return {boolean|undefined}
* - The current value of loop when getting
* - Nothing when setting
*/
loop(value) {
if (value !== undefined) {
this.techCall_('setLoop', value);
this.options_.loop = value;
return;
}
return this.techGet_('loop');
}
/**
* Get or set the poster image source url
*
* @fires Player#posterchange
*
* @param {string} [src]
* Poster image source URL
*
* @return {string|undefined}
* - The current value of poster when getting
* - Nothing when setting
*/
poster(src) {
if (src === undefined) {
return this.poster_;
}
// The correct way to remove a poster is to set as an empty string
// other falsey values will throw errors
if (!src) {
src = '';
}
if (src === this.poster_) {
return;
}
// update the internal poster variable
this.poster_ = src;
// update the tech's poster
this.techCall_('setPoster', src);
this.isPosterFromTech_ = false;
// alert components that the poster has been set
/**
* This event fires when the poster image is changed on the player.
*
* @event Player#posterchange
* @type {Event}
*/
this.trigger('posterchange');
}
/**
* Some techs (e.g. YouTube) can provide a poster source in an
* asynchronous way. We want the poster component to use this
* poster source so that it covers up the tech's controls.
* (YouTube's play button). However we only want to use this
* source if the player user hasn't set a poster through
* the normal APIs.
*
* @fires Player#posterchange
* @listens Tech#posterchange
* @private
*/
handleTechPosterChange_() {
if ((!this.poster_ || this.options_.techCanOverridePoster) && this.tech_ && this.tech_.poster) {
const newPoster = this.tech_.poster() || '';
if (newPoster !== this.poster_) {
this.poster_ = newPoster;
this.isPosterFromTech_ = true;
// Let components know the poster has changed
this.trigger('posterchange');
}
}
}
/**
* Get or set whether or not the controls are showing.
*
* @fires Player#controlsenabled
*
* @param {boolean} [bool]
* - true to turn controls on
* - false to turn controls off
*
* @return {boolean|undefined}
* - The current value of controls when getting
* - Nothing when setting
*/
controls(bool) {
if (bool === undefined) {
return !!this.controls_;
}
bool = !!bool;
// Don't trigger a change event unless it actually changed
if (this.controls_ === bool) {
return;
}
this.controls_ = bool;
if (this.usingNativeControls()) {
this.techCall_('setControls', bool);
}
if (this.controls_) {
this.removeClass('vjs-controls-disabled');
this.addClass('vjs-controls-enabled');
/**
* @event Player#controlsenabled
* @type {Event}
*/
this.trigger('controlsenabled');
if (!this.usingNativeControls()) {
this.addTechControlsListeners_();
}
} else {
this.removeClass('vjs-controls-enabled');
this.addClass('vjs-controls-disabled');
/**
* @event Player#controlsdisabled
* @type {Event}
*/
this.trigger('controlsdisabled');
if (!this.usingNativeControls()) {
this.removeTechControlsListeners_();
}
}
}
/**
* Toggle native controls on/off. Native controls are the controls built into
* devices (e.g. default iPhone controls) or other techs
* (e.g. Vimeo Controls)
* **This should only be set by the current tech, because only the tech knows
* if it can support native controls**
*
* @fires Player#usingnativecontrols
* @fires Player#usingcustomcontrols
*
* @param {boolean} [bool]
* - true to turn native controls on
* - false to turn native controls off
*
* @return {boolean|undefined}
* - The current value of native controls when getting
* - Nothing when setting
*/
usingNativeControls(bool) {
if (bool === undefined) {
return !!this.usingNativeControls_;
}
bool = !!bool;
// Don't trigger a change event unless it actually changed
if (this.usingNativeControls_ === bool) {
return;
}
this.usingNativeControls_ = bool;
if (this.usingNativeControls_) {
this.addClass('vjs-using-native-controls');
/**
* player is using the native device controls
*
* @event Player#usingnativecontrols
* @type {Event}
*/
this.trigger('usingnativecontrols');
} else {
this.removeClass('vjs-using-native-controls');
/**
* player is using the custom HTML controls
*
* @event Player#usingcustomcontrols
* @type {Event}
*/
this.trigger('usingcustomcontrols');
}
}
/**
* Set or get the current MediaError
*
* @fires Player#error
*
* @param {MediaError|string|number} [err]
* A MediaError or a string/number to be turned
* into a MediaError
*
* @return {MediaError|null|undefined}
* - The current MediaError when getting (or null)
* - Nothing when setting
*/
error(err) {
if (err === undefined) {
return this.error_ || null;
}
// allow hooks to modify error object
hooks('beforeerror').forEach(hookFunction => {
const newErr = hookFunction(this, err);
if (!(isObject$1(newErr) && !Array.isArray(newErr) || typeof newErr === 'string' || typeof newErr === 'number' || newErr === null)) {
this.log.error('please return a value that MediaError expects in beforeerror hooks');
return;
}
err = newErr;
});
// Suppress the first error message for no compatible source until
// user interaction
if (this.options_.suppressNotSupportedError && err && err.code === 4) {
const triggerSuppressedError = function () {
this.error(err);
};
this.options_.suppressNotSupportedError = false;
this.any(['click', 'touchstart'], triggerSuppressedError);
this.one('loadstart', function () {
this.off(['click', 'touchstart'], triggerSuppressedError);
});
return;
}
// restoring to default
if (err === null) {
this.error_ = null;
this.removeClass('vjs-error');
if (this.errorDisplay) {
this.errorDisplay.close();
}
return;
}
this.error_ = new MediaError(err);
// add the vjs-error classname to the player
this.addClass('vjs-error');
// log the name of the error type and any message
// IE11 logs "[object object]" and required you to expand message to see error object
log$1.error(`(CODE:${this.error_.code} ${MediaError.errorTypes[this.error_.code]})`, this.error_.message, this.error_);
/**
* @event Player#error
* @type {Event}
*/
this.trigger('error');
// notify hooks of the per player error
hooks('error').forEach(hookFunction => hookFunction(this, this.error_));
return;
}
/**
* Report user activity
*
* @param {Object} event
* Event object
*/
reportUserActivity(event) {
this.userActivity_ = true;
}
/**
* Get/set if user is active
*
* @fires Player#useractive
* @fires Player#userinactive
*
* @param {boolean} [bool]
* - true if the user is active
* - false if the user is inactive
*
* @return {boolean|undefined}
* - The current value of userActive when getting
* - Nothing when setting
*/
userActive(bool) {
if (bool === undefined) {
return this.userActive_;
}
bool = !!bool;
if (bool === this.userActive_) {
return;
}
this.userActive_ = bool;
if (this.userActive_) {
this.userActivity_ = true;
this.removeClass('vjs-user-inactive');
this.addClass('vjs-user-active');
/**
* @event Player#useractive
* @type {Event}
*/
this.trigger('useractive');
return;
}
// Chrome/Safari/IE have bugs where when you change the cursor it can
// trigger a mousemove event. This causes an issue when you're hiding
// the cursor when the user is inactive, and a mousemove signals user
// activity. Making it impossible to go into inactive mode. Specifically
// this happens in fullscreen when we really need to hide the cursor.
//
// When this gets resolved in ALL browsers it can be removed
// https://code.google.com/p/chromium/issues/detail?id=103041
if (this.tech_) {
this.tech_.one('mousemove', function (e) {
e.stopPropagation();
e.preventDefault();
});
}
this.userActivity_ = false;
this.removeClass('vjs-user-active');
this.addClass('vjs-user-inactive');
/**
* @event Player#userinactive
* @type {Event}
*/
this.trigger('userinactive');
}
/**
* Listen for user activity based on timeout value
*
* @private
*/
listenForUserActivity_() {
let mouseInProgress;
let lastMoveX;
let lastMoveY;
const handleActivity = bind_(this, this.reportUserActivity);
const handleMouseMove = function (e) {
// #1068 - Prevent mousemove spamming
// Chrome Bug: https://code.google.com/p/chromium/issues/detail?id=366970
if (e.screenX !== lastMoveX || e.screenY !== lastMoveY) {
lastMoveX = e.screenX;
lastMoveY = e.screenY;
handleActivity();
}
};
const handleMouseDown = function () {
handleActivity();
// For as long as the they are touching the device or have their mouse down,
// we consider them active even if they're not moving their finger or mouse.
// So we want to continue to update that they are active
this.clearInterval(mouseInProgress);
// Setting userActivity=true now and setting the interval to the same time
// as the activityCheck interval (250) should ensure we never miss the
// next activityCheck
mouseInProgress = this.setInterval(handleActivity, 250);
};
const handleMouseUpAndMouseLeave = function (event) {
handleActivity();
// Stop the interval that maintains activity if the mouse/touch is down
this.clearInterval(mouseInProgress);
};
// Any mouse movement will be considered user activity
this.on('mousedown', handleMouseDown);
this.on('mousemove', handleMouseMove);
this.on('mouseup', handleMouseUpAndMouseLeave);
this.on('mouseleave', handleMouseUpAndMouseLeave);
const controlBar = this.getChild('controlBar');
// Fixes bug on Android & iOS where when tapping progressBar (when control bar is displayed)
// controlBar would no longer be hidden by default timeout.
if (controlBar && !IS_IOS && !IS_ANDROID) {
controlBar.on('mouseenter', function (event) {
if (this.player().options_.inactivityTimeout !== 0) {
this.player().cache_.inactivityTimeout = this.player().options_.inactivityTimeout;
}
this.player().options_.inactivityTimeout = 0;
});
controlBar.on('mouseleave', function (event) {
this.player().options_.inactivityTimeout = this.player().cache_.inactivityTimeout;
});
}
// Listen for keyboard navigation
// Shouldn't need to use inProgress interval because of key repeat
this.on('keydown', handleActivity);
this.on('keyup', handleActivity);
// Run an interval every 250 milliseconds instead of stuffing everything into
// the mousemove/touchmove function itself, to prevent performance degradation.
// `this.reportUserActivity` simply sets this.userActivity_ to true, which
// then gets picked up by this loop
// http://ejohn.org/blog/learning-from-twitter/
let inactivityTimeout;
/** @this Player */
const activityCheck = function () {
// Check to see if mouse/touch activity has happened
if (!this.userActivity_) {
return;
}
// Reset the activity tracker
this.userActivity_ = false;
// If the user state was inactive, set the state to active
this.userActive(true);
// Clear any existing inactivity timeout to start the timer over
this.clearTimeout(inactivityTimeout);
const timeout = this.options_.inactivityTimeout;
if (timeout <= 0) {
return;
}
// In milliseconds, if no more activity has occurred the
// user will be considered inactive
inactivityTimeout = this.setTimeout(function () {
// Protect against the case where the inactivityTimeout can trigger just
// before the next user activity is picked up by the activity check loop
// causing a flicker
if (!this.userActivity_) {
this.userActive(false);
}
}, timeout);
};
this.setInterval(activityCheck, 250);
}
/**
* Gets or sets the current playback rate. A playback rate of
* 1.0 represents normal speed and 0.5 would indicate half-speed
* playback, for instance.
*
* @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-playbackrate
*
* @param {number} [rate]
* New playback rate to set.
*
* @return {number|undefined}
* - The current playback rate when getting or 1.0
* - Nothing when setting
*/
playbackRate(rate) {
if (rate !== undefined) {
// NOTE: this.cache_.lastPlaybackRate is set from the tech handler
// that is registered above
this.techCall_('setPlaybackRate', rate);
return;
}
if (this.tech_ && this.tech_.featuresPlaybackRate) {
return this.cache_.lastPlaybackRate || this.techGet_('playbackRate');
}
return 1.0;
}
/**
* Gets or sets the current default playback rate. A default playback rate of
* 1.0 represents normal speed and 0.5 would indicate half-speed playback, for instance.
* defaultPlaybackRate will only represent what the initial playbackRate of a video was, not
* not the current playbackRate.
*
* @see https://html.spec.whatwg.org/multipage/embedded-content.html#dom-media-defaultplaybackrate
*
* @param {number} [rate]
* New default playback rate to set.
*
* @return {number|undefined}
* - The default playback rate when getting or 1.0
* - Nothing when setting
*/
defaultPlaybackRate(rate) {
if (rate !== undefined) {
return this.techCall_('setDefaultPlaybackRate', rate);
}
if (this.tech_ && this.tech_.featuresPlaybackRate) {
return this.techGet_('defaultPlaybackRate');
}
return 1.0;
}
/**
* Gets or sets the audio flag
*
* @param {boolean} [bool]
* - true signals that this is an audio player
* - false signals that this is not an audio player
*
* @return {boolean|undefined}
* - The current value of isAudio when getting
* - Nothing when setting
*/
isAudio(bool) {
if (bool !== undefined) {
this.isAudio_ = !!bool;
return;
}
return !!this.isAudio_;
}
updatePlayerHeightOnAudioOnlyMode_() {
const controlBar = this.getChild('ControlBar');
if (!controlBar || this.audioOnlyCache_.controlBarHeight === controlBar.currentHeight()) {
return;
}
this.audioOnlyCache_.controlBarHeight = controlBar.currentHeight();
this.height(this.audioOnlyCache_.controlBarHeight);
}
enableAudioOnlyUI_() {
// Update styling immediately to show the control bar so we can get its height
this.addClass('vjs-audio-only-mode');
const playerChildren = this.children();
const controlBar = this.getChild('ControlBar');
const controlBarHeight = controlBar && controlBar.currentHeight();
// Hide all player components except the control bar. Control bar components
// needed only for video are hidden with CSS
playerChildren.forEach(child => {
if (child === controlBar) {
return;
}
if (child.el_ && !child.hasClass('vjs-hidden')) {
child.hide();
this.audioOnlyCache_.hiddenChildren.push(child);
}
});
this.audioOnlyCache_.playerHeight = this.currentHeight();
this.audioOnlyCache_.controlBarHeight = controlBarHeight;
this.on('playerresize', this.boundUpdatePlayerHeightOnAudioOnlyMode_);
// Set the player height the same as the control bar
this.height(controlBarHeight);
this.trigger('audioonlymodechange');
}
disableAudioOnlyUI_() {
this.removeClass('vjs-audio-only-mode');
this.off('playerresize', this.boundUpdatePlayerHeightOnAudioOnlyMode_);
// Show player components that were previously hidden
this.audioOnlyCache_.hiddenChildren.forEach(child => child.show());
// Reset player height
this.height(this.audioOnlyCache_.playerHeight);
this.trigger('audioonlymodechange');
}
/**
* Get the current audioOnlyMode state or set audioOnlyMode to true or false.
*
* Setting this to `true` will hide all player components except the control bar,
* as well as control bar components needed only for video.
*
* @param {boolean} [value]
* The value to set audioOnlyMode to.
*
* @return {Promise|boolean}
* A Promise is returned when setting the state, and a boolean when getting
* the present state
*/
audioOnlyMode(value) {
if (typeof value !== 'boolean' || value === this.audioOnlyMode_) {
return this.audioOnlyMode_;
}
this.audioOnlyMode_ = value;
// Enable Audio Only Mode
if (value) {
const exitPromises = [];
// Fullscreen and PiP are not supported in audioOnlyMode, so exit if we need to.
if (this.isInPictureInPicture()) {
exitPromises.push(this.exitPictureInPicture());
}
if (this.isFullscreen()) {
exitPromises.push(this.exitFullscreen());
}
if (this.audioPosterMode()) {
exitPromises.push(this.audioPosterMode(false));
}
return Promise.all(exitPromises).then(() => this.enableAudioOnlyUI_());
}
// Disable Audio Only Mode
return Promise.resolve().then(() => this.disableAudioOnlyUI_());
}
enablePosterModeUI_() {
// Hide the video element and show the poster image to enable posterModeUI
const tech = this.tech_ && this.tech_;
tech.hide();
this.addClass('vjs-audio-poster-mode');
this.trigger('audiopostermodechange');
}
disablePosterModeUI_() {
// Show the video element and hide the poster image to disable posterModeUI
const tech = this.tech_ && this.tech_;
tech.show();
this.removeClass('vjs-audio-poster-mode');
this.trigger('audiopostermodechange');
}
/**
* Get the current audioPosterMode state or set audioPosterMode to true or false
*
* @param {boolean} [value]
* The value to set audioPosterMode to.
*
* @return {Promise|boolean}
* A Promise is returned when setting the state, and a boolean when getting
* the present state
*/
audioPosterMode(value) {
if (typeof value !== 'boolean' || value === this.audioPosterMode_) {
return this.audioPosterMode_;
}
this.audioPosterMode_ = value;
if (value) {
if (this.audioOnlyMode()) {
const audioOnlyModePromise = this.audioOnlyMode(false);
return audioOnlyModePromise.then(() => {
// enable audio poster mode after audio only mode is disabled
this.enablePosterModeUI_();
});
}
return Promise.resolve().then(() => {
// enable audio poster mode
this.enablePosterModeUI_();
});
}
return Promise.resolve().then(() => {
// disable audio poster mode
this.disablePosterModeUI_();
});
}
/**
* A helper method for adding a {@link TextTrack} to our
* {@link TextTrackList}.
*
* In addition to the W3C settings we allow adding additional info through options.
*
* @see http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-addtexttrack
*
* @param {string} [kind]
* the kind of TextTrack you are adding
*
* @param {string} [label]
* the label to give the TextTrack label
*
* @param {string} [language]
* the language to set on the TextTrack
*
* @return {TextTrack|undefined}
* the TextTrack that was added or undefined
* if there is no tech
*/
addTextTrack(kind, label, language) {
if (this.tech_) {
return this.tech_.addTextTrack(kind, label, language);
}
}
/**
* Create a remote {@link TextTrack} and an {@link HTMLTrackElement}.
*
* @param {Object} options
* Options to pass to {@link HTMLTrackElement} during creation. See
* {@link HTMLTrackElement} for object properties that you should use.
*
* @param {boolean} [manualCleanup=false] if set to true, the TextTrack will not be removed
* from the TextTrackList and HtmlTrackElementList
* after a source change
*
* @return {HtmlTrackElement}
* the HTMLTrackElement that was created and added
* to the HtmlTrackElementList and the remote
* TextTrackList
*
*/
addRemoteTextTrack(options, manualCleanup) {
if (this.tech_) {
return this.tech_.addRemoteTextTrack(options, manualCleanup);
}
}
/**
* Remove a remote {@link TextTrack} from the respective
* {@link TextTrackList} and {@link HtmlTrackElementList}.
*
* @param {Object} track
* Remote {@link TextTrack} to remove
*
* @return {undefined}
* does not return anything
*/
removeRemoteTextTrack(obj = {}) {
let {
track
} = obj;
if (!track) {
track = obj;
}
// destructure the input into an object with a track argument, defaulting to arguments[0]
// default the whole argument to an empty object if nothing was passed in
if (this.tech_) {
return this.tech_.removeRemoteTextTrack(track);
}
}
/**
* Gets available media playback quality metrics as specified by the W3C's Media
* Playback Quality API.
*
* @see [Spec]{@link https://wicg.github.io/media-playback-quality}
*
* @return {Object|undefined}
* An object with supported media playback quality metrics or undefined if there
* is no tech or the tech does not support it.
*/
getVideoPlaybackQuality() {
return this.techGet_('getVideoPlaybackQuality');
}
/**
* Get video width
*
* @return {number}
* current video width
*/
videoWidth() {
return this.tech_ && this.tech_.videoWidth && this.tech_.videoWidth() || 0;
}
/**
* Get video height
*
* @return {number}
* current video height
*/
videoHeight() {
return this.tech_ && this.tech_.videoHeight && this.tech_.videoHeight() || 0;
}
/**
* Set or get the player's language code.
*
* Changing the language will trigger
* [languagechange]{@link Player#event:languagechange}
* which Components can use to update control text.
* ClickableComponent will update its control text by default on
* [languagechange]{@link Player#event:languagechange}.
*
* @fires Player#languagechange
*
* @param {string} [code]
* the language code to set the player to
*
* @return {string|undefined}
* - The current language code when getting
* - Nothing when setting
*/
language(code) {
if (code === undefined) {
return this.language_;
}
if (this.language_ !== String(code).toLowerCase()) {
this.language_ = String(code).toLowerCase();
// during first init, it's possible some things won't be evented
if (isEvented(this)) {
/**
* fires when the player language change
*
* @event Player#languagechange
* @type {Event}
*/
this.trigger('languagechange');
}
}
}
/**
* Get the player's language dictionary
* Merge every time, because a newly added plugin might call videojs.addLanguage() at any time
* Languages specified directly in the player options have precedence
*
* @return {Array}
* An array of of supported languages
*/
languages() {
return merge$2(Player.prototype.options_.languages, this.languages_);
}
/**
* returns a JavaScript object representing the current track
* information. **DOES not return it as JSON**
*
* @return {Object}
* Object representing the current of track info
*/
toJSON() {
const options = merge$2(this.options_);
const tracks = options.tracks;
options.tracks = [];
for (let i = 0; i < tracks.length; i++) {
let track = tracks[i];
// deep merge tracks and null out player so no circular references
track = merge$2(track);
track.player = undefined;
options.tracks[i] = track;
}
return options;
}
/**
* Creates a simple modal dialog (an instance of the {@link ModalDialog}
* component) that immediately overlays the player with arbitrary
* content and removes itself when closed.
*
* @param {string|Function|Element|Array|null} content
* Same as {@link ModalDialog#content}'s param of the same name.
* The most straight-forward usage is to provide a string or DOM
* element.
*
* @param {Object} [options]
* Extra options which will be passed on to the {@link ModalDialog}.
*
* @return {ModalDialog}
* the {@link ModalDialog} that was created
*/
createModal(content, options) {
options = options || {};
options.content = content || '';
const modal = new ModalDialog(this, options);
this.addChild(modal);
modal.on('dispose', () => {
this.removeChild(modal);
});
modal.open();
return modal;
}
/**
* Change breakpoint classes when the player resizes.
*
* @private
*/
updateCurrentBreakpoint_() {
if (!this.responsive()) {
return;
}
const currentBreakpoint = this.currentBreakpoint();
const currentWidth = this.currentWidth();
for (let i = 0; i < BREAKPOINT_ORDER.length; i++) {
const candidateBreakpoint = BREAKPOINT_ORDER[i];
const maxWidth = this.breakpoints_[candidateBreakpoint];
if (currentWidth <= maxWidth) {
// The current breakpoint did not change, nothing to do.
if (currentBreakpoint === candidateBreakpoint) {
return;
}
// Only remove a class if there is a current breakpoint.
if (currentBreakpoint) {
this.removeClass(BREAKPOINT_CLASSES[currentBreakpoint]);
}
this.addClass(BREAKPOINT_CLASSES[candidateBreakpoint]);
this.breakpoint_ = candidateBreakpoint;
break;
}
}
}
/**
* Removes the current breakpoint.
*
* @private
*/
removeCurrentBreakpoint_() {
const className = this.currentBreakpointClass();
this.breakpoint_ = '';
if (className) {
this.removeClass(className);
}
}
/**
* Get or set breakpoints on the player.
*
* Calling this method with an object or `true` will remove any previous
* custom breakpoints and start from the defaults again.
*
* @param {Object|boolean} [breakpoints]
* If an object is given, it can be used to provide custom
* breakpoints. If `true` is given, will set default breakpoints.
* If this argument is not given, will simply return the current
* breakpoints.
*
* @param {number} [breakpoints.tiny]
* The maximum width for the "vjs-layout-tiny" class.
*
* @param {number} [breakpoints.xsmall]
* The maximum width for the "vjs-layout-x-small" class.
*
* @param {number} [breakpoints.small]
* The maximum width for the "vjs-layout-small" class.
*
* @param {number} [breakpoints.medium]
* The maximum width for the "vjs-layout-medium" class.
*
* @param {number} [breakpoints.large]
* The maximum width for the "vjs-layout-large" class.
*
* @param {number} [breakpoints.xlarge]
* The maximum width for the "vjs-layout-x-large" class.
*
* @param {number} [breakpoints.huge]
* The maximum width for the "vjs-layout-huge" class.
*
* @return {Object}
* An object mapping breakpoint names to maximum width values.
*/
breakpoints(breakpoints) {
// Used as a getter.
if (breakpoints === undefined) {
return Object.assign(this.breakpoints_);
}
this.breakpoint_ = '';
this.breakpoints_ = Object.assign({}, DEFAULT_BREAKPOINTS, breakpoints);
// When breakpoint definitions change, we need to update the currently
// selected breakpoint.
this.updateCurrentBreakpoint_();
// Clone the breakpoints before returning.
return Object.assign(this.breakpoints_);
}
/**
* Get or set a flag indicating whether or not this player should adjust
* its UI based on its dimensions.
*
* @param {boolean} [value]
* Should be `true` if the player should adjust its UI based on its
* dimensions; otherwise, should be `false`.
*
* @return {boolean|undefined}
* Will be `true` if this player should adjust its UI based on its
* dimensions; otherwise, will be `false`.
* Nothing if setting
*/
responsive(value) {
// Used as a getter.
if (value === undefined) {
return this.responsive_;
}
value = Boolean(value);
const current = this.responsive_;
// Nothing changed.
if (value === current) {
return;
}
// The value actually changed, set it.
this.responsive_ = value;
// Start listening for breakpoints and set the initial breakpoint if the
// player is now responsive.
if (value) {
this.on('playerresize', this.boundUpdateCurrentBreakpoint_);
this.updateCurrentBreakpoint_();
// Stop listening for breakpoints if the player is no longer responsive.
} else {
this.off('playerresize', this.boundUpdateCurrentBreakpoint_);
this.removeCurrentBreakpoint_();
}
return value;
}
/**
* Get current breakpoint name, if any.
*
* @return {string}
* If there is currently a breakpoint set, returns a the key from the
* breakpoints object matching it. Otherwise, returns an empty string.
*/
currentBreakpoint() {
return this.breakpoint_;
}
/**
* Get the current breakpoint class name.
*
* @return {string}
* The matching class name (e.g. `"vjs-layout-tiny"` or
* `"vjs-layout-large"`) for the current breakpoint. Empty string if
* there is no current breakpoint.
*/
currentBreakpointClass() {
return BREAKPOINT_CLASSES[this.breakpoint_] || '';
}
/**
* An object that describes a single piece of media.
*
* Properties that are not part of this type description will be retained; so,
* this can be viewed as a generic metadata storage mechanism as well.
*
* @see {@link https://wicg.github.io/mediasession/#the-mediametadata-interface}
* @typedef {Object} Player~MediaObject
*
* @property {string} [album]
* Unused, except if this object is passed to the `MediaSession`
* API.
*
* @property {string} [artist]
* Unused, except if this object is passed to the `MediaSession`
* API.
*
* @property {Object[]} [artwork]
* Unused, except if this object is passed to the `MediaSession`
* API. If not specified, will be populated via the `poster`, if
* available.
*
* @property {string} [poster]
* URL to an image that will display before playback.
*
* @property {Tech~SourceObject|Tech~SourceObject[]|string} [src]
* A single source object, an array of source objects, or a string
* referencing a URL to a media source. It is _highly recommended_
* that an object or array of objects is used here, so that source
* selection algorithms can take the `type` into account.
*
* @property {string} [title]
* Unused, except if this object is passed to the `MediaSession`
* API.
*
* @property {Object[]} [textTracks]
* An array of objects to be used to create text tracks, following
* the {@link https://www.w3.org/TR/html50/embedded-content-0.html#the-track-element|native track element format}.
* For ease of removal, these will be created as "remote" text
* tracks and set to automatically clean up on source changes.
*
* These objects may have properties like `src`, `kind`, `label`,
* and `language`, see {@link Tech#createRemoteTextTrack}.
*/
/**
* Populate the player using a {@link Player~MediaObject|MediaObject}.
*
* @param {Player~MediaObject} media
* A media object.
*
* @param {Function} ready
* A callback to be called when the player is ready.
*/
loadMedia(media, ready) {
if (!media || typeof media !== 'object') {
return;
}
const crossOrigin = this.crossOrigin();
this.reset();
// Clone the media object so it cannot be mutated from outside.
this.cache_.media = merge$2(media);
const {
artist,
artwork,
description,
poster,
src,
textTracks,
title
} = this.cache_.media;
// If `artwork` is not given, create it using `poster`.
if (!artwork && poster) {
this.cache_.media.artwork = [{
src: poster,
type: getMimetype(poster)
}];
}
if (crossOrigin) {
this.crossOrigin(crossOrigin);
}
if (src) {
this.src(src);
}
if (poster) {
this.poster(poster);
}
if (Array.isArray(textTracks)) {
textTracks.forEach(tt => this.addRemoteTextTrack(tt, false));
}
if (this.titleBar) {
this.titleBar.update({
title,
description: description || artist || ''
});
}
this.ready(ready);
}
/**
* Get a clone of the current {@link Player~MediaObject} for this player.
*
* If the `loadMedia` method has not been used, will attempt to return a
* {@link Player~MediaObject} based on the current state of the player.
*
* @return {Player~MediaObject}
*/
getMedia() {
if (!this.cache_.media) {
const poster = this.poster();
const src = this.currentSources();
const textTracks = Array.prototype.map.call(this.remoteTextTracks(), tt => ({
kind: tt.kind,
label: tt.label,
language: tt.language,
src: tt.src
}));
const media = {
src,
textTracks
};
if (poster) {
media.poster = poster;
media.artwork = [{
src: media.poster,
type: getMimetype(media.poster)
}];
}
return media;
}
return merge$2(this.cache_.media);
}
/**
* Gets tag settings
*
* @param {Element} tag
* The player tag
*
* @return {Object}
* An object containing all of the settings
* for a player tag
*/
static getTagSettings(tag) {
const baseOptions = {
sources: [],
tracks: []
};
const tagOptions = getAttributes(tag);
const dataSetup = tagOptions['data-setup'];
if (hasClass(tag, 'vjs-fill')) {
tagOptions.fill = true;
}
if (hasClass(tag, 'vjs-fluid')) {
tagOptions.fluid = true;
}
// Check if data-setup attr exists.
if (dataSetup !== null) {
// Parse options JSON
try {
// If empty string, make it a parsable json object.
Object.assign(tagOptions, JSON.parse(dataSetup || '{}'));
} catch (e) {
log$1.error('data-setup', e);
}
}
Object.assign(baseOptions, tagOptions);
// Get tag children settings
if (tag.hasChildNodes()) {
const children = tag.childNodes;
for (let i = 0, j = children.length; i < j; i++) {
const child = children[i];
// Change case needed: http://ejohn.org/blog/nodename-case-sensitivity/
const childName = child.nodeName.toLowerCase();
if (childName === 'source') {
baseOptions.sources.push(getAttributes(child));
} else if (childName === 'track') {
baseOptions.tracks.push(getAttributes(child));
}
}
}
return baseOptions;
}
/**
* Set debug mode to enable/disable logs at info level.
*
* @param {boolean} enabled
* @fires Player#debugon
* @fires Player#debugoff
* @return {boolean|undefined}
*/
debug(enabled) {
if (enabled === undefined) {
return this.debugEnabled_;
}
if (enabled) {
this.trigger('debugon');
this.previousLogLevel_ = this.log.level;
this.log.level('debug');
this.debugEnabled_ = true;
} else {
this.trigger('debugoff');
this.log.level(this.previousLogLevel_);
this.previousLogLevel_ = undefined;
this.debugEnabled_ = false;
}
}
/**
* Set or get current playback rates.
* Takes an array and updates the playback rates menu with the new items.
* Pass in an empty array to hide the menu.
* Values other than arrays are ignored.
*
* @fires Player#playbackrateschange
* @param {number[]} [newRates]
* The new rates that the playback rates menu should update to.
* An empty array will hide the menu
* @return {number[]} When used as a getter will return the current playback rates
*/
playbackRates(newRates) {
if (newRates === undefined) {
return this.cache_.playbackRates;
}
// ignore any value that isn't an array
if (!Array.isArray(newRates)) {
return;
}
// ignore any arrays that don't only contain numbers
if (!newRates.every(rate => typeof rate === 'number')) {
return;
}
this.cache_.playbackRates = newRates;
/**
* fires when the playback rates in a player are changed
*
* @event Player#playbackrateschange
* @type {Event}
*/
this.trigger('playbackrateschange');
}
/**
* Reports whether or not a player has a plugin available.
*
* This does not report whether or not the plugin has ever been initialized
* on this player. For that, [usingPlugin]{@link Player#usingPlugin}.
*
* @method hasPlugin
* @param {string} name
* The name of a plugin.
*
* @return {boolean}
* Whether or not this player has the requested plugin available.
*/
/**
* Reports whether or not a player is using a plugin by name.
*
* For basic plugins, this only reports whether the plugin has _ever_ been
* initialized on this player.
*
* @method Player#usingPlugin
* @param {string} name
* The name of a plugin.
*
* @return {boolean}
* Whether or not this player is using the requested plugin.
*/
}
/**
* Get the {@link VideoTrackList}
*
* @link https://html.spec.whatwg.org/multipage/embedded-content.html#videotracklist
*
* @return {VideoTrackList}
* the current video track list
*
* @method Player.prototype.videoTracks
*/
/**
* Get the {@link AudioTrackList}
*
* @link https://html.spec.whatwg.org/multipage/embedded-content.html#audiotracklist
*
* @return {AudioTrackList}
* the current audio track list
*
* @method Player.prototype.audioTracks
*/
/**
* Get the {@link TextTrackList}
*
* @link http://www.w3.org/html/wg/drafts/html/master/embedded-content-0.html#dom-media-texttracks
*
* @return {TextTrackList}
* the current text track list
*
* @method Player.prototype.textTracks
*/
/**
* Get the remote {@link TextTrackList}
*
* @return {TextTrackList}
* The current remote text track list
*
* @method Player.prototype.remoteTextTracks
*/
/**
* Get the remote {@link HtmlTrackElementList} tracks.
*
* @return {HtmlTrackElementList}
* The current remote text track element list
*
* @method Player.prototype.remoteTextTrackEls
*/
ALL.names.forEach(function (name) {
const props = ALL[name];
Player.prototype[props.getterName] = function () {
if (this.tech_) {
return this.tech_[props.getterName]();
}
// if we have not yet loadTech_, we create {video,audio,text}Tracks_
// these will be passed to the tech during loading
this[props.privateName] = this[props.privateName] || new props.ListClass();
return this[props.privateName];
};
});
/**
* Get or set the `Player`'s crossorigin option. For the HTML5 player, this
* sets the `crossOrigin` property on the `` tag to control the CORS
* behavior.
*
* @see [Video Element Attributes]{@link https://developer.mozilla.org/en-US/docs/Web/HTML/Element/video#attr-crossorigin}
*
* @param {string} [value]
* The value to set the `Player`'s crossorigin to. If an argument is
* given, must be one of `anonymous` or `use-credentials`.
*
* @return {string|undefined}
* - The current crossorigin value of the `Player` when getting.
* - undefined when setting
*/
Player.prototype.crossorigin = Player.prototype.crossOrigin;
/**
* Global enumeration of players.
*
* The keys are the player IDs and the values are either the {@link Player}
* instance or `null` for disposed players.
*
* @type {Object}
*/
Player.players = {};
const navigator = window.navigator;
/*
* Player instance options, surfaced using options
* options = Player.prototype.options_
* Make changes in options, not here.
*
* @type {Object}
* @private
*/
Player.prototype.options_ = {
// Default order of fallback technology
techOrder: Tech.defaultTechOrder_,
html5: {},
// enable sourceset by default
enableSourceset: true,
// default inactivity timeout
inactivityTimeout: 2000,
// default playback rates
playbackRates: [],
// Add playback rate selection by adding rates
// 'playbackRates': [0.5, 1, 1.5, 2],
liveui: false,
// Included control sets
children: ['mediaLoader', 'posterImage', 'titleBar', 'textTrackDisplay', 'loadingSpinner', 'bigPlayButton', 'liveTracker', 'controlBar', 'errorDisplay', 'textTrackSettings', 'resizeManager'],
language: navigator && (navigator.languages && navigator.languages[0] || navigator.userLanguage || navigator.language) || 'en',
// locales and their language translations
languages: {},
// Default message to show when a video cannot be played.
notSupportedMessage: 'No compatible source was found for this media.',
normalizeAutoplay: false,
fullscreen: {
options: {
navigationUI: 'hide'
}
},
breakpoints: {},
responsive: false,
audioOnlyMode: false,
audioPosterMode: false,
spatialNavigation: {
enabled: false,
horizontalSeek: false
},
// Default smooth seeking to false
enableSmoothSeeking: false
};
TECH_EVENTS_RETRIGGER.forEach(function (event) {
Player.prototype[`handleTech${toTitleCase$1(event)}_`] = function () {
return this.trigger(event);
};
});
/**
* Fired when the player has initial duration and dimension information
*
* @event Player#loadedmetadata
* @type {Event}
*/
/**
* Fired when the player has downloaded data at the current playback position
*
* @event Player#loadeddata
* @type {Event}
*/
/**
* Fired when the current playback position has changed *
* During playback this is fired every 15-250 milliseconds, depending on the
* playback technology in use.
*
* @event Player#timeupdate
* @type {Event}
*/
/**
* Fired when the volume changes
*
* @event Player#volumechange
* @type {Event}
*/
Component$1.registerComponent('Player', Player);
/**
* @file plugin.js
*/
/**
* The base plugin name.
*
* @private
* @constant
* @type {string}
*/
const BASE_PLUGIN_NAME = 'plugin';
/**
* The key on which a player's active plugins cache is stored.
*
* @private
* @constant
* @type {string}
*/
const PLUGIN_CACHE_KEY = 'activePlugins_';
/**
* Stores registered plugins in a private space.
*
* @private
* @type {Object}
*/
const pluginStorage = {};
/**
* Reports whether or not a plugin has been registered.
*
* @private
* @param {string} name
* The name of a plugin.
*
* @return {boolean}
* Whether or not the plugin has been registered.
*/
const pluginExists = name => pluginStorage.hasOwnProperty(name);
/**
* Get a single registered plugin by name.
*
* @private
* @param {string} name
* The name of a plugin.
*
* @return {typeof Plugin|Function|undefined}
* The plugin (or undefined).
*/
const getPlugin = name => pluginExists(name) ? pluginStorage[name] : undefined;
/**
* Marks a plugin as "active" on a player.
*
* Also, ensures that the player has an object for tracking active plugins.
*
* @private
* @param {Player} player
* A Video.js player instance.
*
* @param {string} name
* The name of a plugin.
*/
const markPluginAsActive = (player, name) => {
player[PLUGIN_CACHE_KEY] = player[PLUGIN_CACHE_KEY] || {};
player[PLUGIN_CACHE_KEY][name] = true;
};
/**
* Triggers a pair of plugin setup events.
*
* @private
* @param {Player} player
* A Video.js player instance.
*
* @param {PluginEventHash} hash
* A plugin event hash.
*
* @param {boolean} [before]
* If true, prefixes the event name with "before". In other words,
* use this to trigger "beforepluginsetup" instead of "pluginsetup".
*/
const triggerSetupEvent = (player, hash, before) => {
const eventName = (before ? 'before' : '') + 'pluginsetup';
player.trigger(eventName, hash);
player.trigger(eventName + ':' + hash.name, hash);
};
/**
* Takes a basic plugin function and returns a wrapper function which marks
* on the player that the plugin has been activated.
*
* @private
* @param {string} name
* The name of the plugin.
*
* @param {Function} plugin
* The basic plugin.
*
* @return {Function}
* A wrapper function for the given plugin.
*/
const createBasicPlugin = function (name, plugin) {
const basicPluginWrapper = function () {
// We trigger the "beforepluginsetup" and "pluginsetup" events on the player
// regardless, but we want the hash to be consistent with the hash provided
// for advanced plugins.
//
// The only potentially counter-intuitive thing here is the `instance` in
// the "pluginsetup" event is the value returned by the `plugin` function.
triggerSetupEvent(this, {
name,
plugin,
instance: null
}, true);
const instance = plugin.apply(this, arguments);
markPluginAsActive(this, name);
triggerSetupEvent(this, {
name,
plugin,
instance
});
return instance;
};
Object.keys(plugin).forEach(function (prop) {
basicPluginWrapper[prop] = plugin[prop];
});
return basicPluginWrapper;
};
/**
* Takes a plugin sub-class and returns a factory function for generating
* instances of it.
*
* This factory function will replace itself with an instance of the requested
* sub-class of Plugin.
*
* @private
* @param {string} name
* The name of the plugin.
*
* @param {Plugin} PluginSubClass
* The advanced plugin.
*
* @return {Function}
*/
const createPluginFactory = (name, PluginSubClass) => {
// Add a `name` property to the plugin prototype so that each plugin can
// refer to itself by name.
PluginSubClass.prototype.name = name;
return function (...args) {
triggerSetupEvent(this, {
name,
plugin: PluginSubClass,
instance: null
}, true);
const instance = new PluginSubClass(...[this, ...args]);
// The plugin is replaced by a function that returns the current instance.
this[name] = () => instance;
triggerSetupEvent(this, instance.getEventHash());
return instance;
};
};
/**
* Parent class for all advanced plugins.
*
* @mixes module:evented~EventedMixin
* @mixes module:stateful~StatefulMixin
* @fires Player#beforepluginsetup
* @fires Player#beforepluginsetup:$name
* @fires Player#pluginsetup
* @fires Player#pluginsetup:$name
* @listens Player#dispose
* @throws {Error}
* If attempting to instantiate the base {@link Plugin} class
* directly instead of via a sub-class.
*/
class Plugin {
/**
* Creates an instance of this class.
*
* Sub-classes should call `super` to ensure plugins are properly initialized.
*
* @param {Player} player
* A Video.js player instance.
*/
constructor(player) {
if (this.constructor === Plugin) {
throw new Error('Plugin must be sub-classed; not directly instantiated.');
}
this.player = player;
if (!this.log) {
this.log = this.player.log.createLogger(this.name);
}
// Make this object evented, but remove the added `trigger` method so we
// use the prototype version instead.
evented(this);
delete this.trigger;
stateful(this, this.constructor.defaultState);
markPluginAsActive(player, this.name);
// Auto-bind the dispose method so we can use it as a listener and unbind
// it later easily.
this.dispose = this.dispose.bind(this);
// If the player is disposed, dispose the plugin.
player.on('dispose', this.dispose);
}
/**
* Get the version of the plugin that was set on .VERSION
*/
version() {
return this.constructor.VERSION;
}
/**
* Each event triggered by plugins includes a hash of additional data with
* conventional properties.
*
* This returns that object or mutates an existing hash.
*
* @param {Object} [hash={}]
* An object to be used as event an event hash.
*
* @return {PluginEventHash}
* An event hash object with provided properties mixed-in.
*/
getEventHash(hash = {}) {
hash.name = this.name;
hash.plugin = this.constructor;
hash.instance = this;
return hash;
}
/**
* Triggers an event on the plugin object and overrides
* {@link module:evented~EventedMixin.trigger|EventedMixin.trigger}.
*
* @param {string|Object} event
* An event type or an object with a type property.
*
* @param {Object} [hash={}]
* Additional data hash to merge with a
* {@link PluginEventHash|PluginEventHash}.
*
* @return {boolean}
* Whether or not default was prevented.
*/
trigger(event, hash = {}) {
return trigger(this.eventBusEl_, event, this.getEventHash(hash));
}
/**
* Handles "statechanged" events on the plugin. No-op by default, override by
* subclassing.
*
* @abstract
* @param {Event} e
* An event object provided by a "statechanged" event.
*
* @param {Object} e.changes
* An object describing changes that occurred with the "statechanged"
* event.
*/
handleStateChanged(e) {}
/**
* Disposes a plugin.
*
* Subclasses can override this if they want, but for the sake of safety,
* it's probably best to subscribe the "dispose" event.
*
* @fires Plugin#dispose
*/
dispose() {
const {
name,
player
} = this;
/**
* Signals that a advanced plugin is about to be disposed.
*
* @event Plugin#dispose
* @type {Event}
*/
this.trigger('dispose');
this.off();
player.off('dispose', this.dispose);
// Eliminate any possible sources of leaking memory by clearing up
// references between the player and the plugin instance and nulling out
// the plugin's state and replacing methods with a function that throws.
player[PLUGIN_CACHE_KEY][name] = false;
this.player = this.state = null;
// Finally, replace the plugin name on the player with a new factory
// function, so that the plugin is ready to be set up again.
player[name] = createPluginFactory(name, pluginStorage[name]);
}
/**
* Determines if a plugin is a basic plugin (i.e. not a sub-class of `Plugin`).
*
* @param {string|Function} plugin
* If a string, matches the name of a plugin. If a function, will be
* tested directly.
*
* @return {boolean}
* Whether or not a plugin is a basic plugin.
*/
static isBasic(plugin) {
const p = typeof plugin === 'string' ? getPlugin(plugin) : plugin;
return typeof p === 'function' && !Plugin.prototype.isPrototypeOf(p.prototype);
}
/**
* Register a Video.js plugin.
*
* @param {string} name
* The name of the plugin to be registered. Must be a string and
* must not match an existing plugin or a method on the `Player`
* prototype.
*
* @param {typeof Plugin|Function} plugin
* A sub-class of `Plugin` or a function for basic plugins.
*
* @return {typeof Plugin|Function}
* For advanced plugins, a factory function for that plugin. For
* basic plugins, a wrapper function that initializes the plugin.
*/
static registerPlugin(name, plugin) {
if (typeof name !== 'string') {
throw new Error(`Illegal plugin name, "${name}", must be a string, was ${typeof name}.`);
}
if (pluginExists(name)) {
log$1.warn(`A plugin named "${name}" already exists. You may want to avoid re-registering plugins!`);
} else if (Player.prototype.hasOwnProperty(name)) {
throw new Error(`Illegal plugin name, "${name}", cannot share a name with an existing player method!`);
}
if (typeof plugin !== 'function') {
throw new Error(`Illegal plugin for "${name}", must be a function, was ${typeof plugin}.`);
}
pluginStorage[name] = plugin;
// Add a player prototype method for all sub-classed plugins (but not for
// the base Plugin class).
if (name !== BASE_PLUGIN_NAME) {
if (Plugin.isBasic(plugin)) {
Player.prototype[name] = createBasicPlugin(name, plugin);
} else {
Player.prototype[name] = createPluginFactory(name, plugin);
}
}
return plugin;
}
/**
* De-register a Video.js plugin.
*
* @param {string} name
* The name of the plugin to be de-registered. Must be a string that
* matches an existing plugin.
*
* @throws {Error}
* If an attempt is made to de-register the base plugin.
*/
static deregisterPlugin(name) {
if (name === BASE_PLUGIN_NAME) {
throw new Error('Cannot de-register base plugin.');
}
if (pluginExists(name)) {
delete pluginStorage[name];
delete Player.prototype[name];
}
}
/**
* Gets an object containing multiple Video.js plugins.
*
* @param {Array} [names]
* If provided, should be an array of plugin names. Defaults to _all_
* plugin names.
*
* @return {Object|undefined}
* An object containing plugin(s) associated with their name(s) or
* `undefined` if no matching plugins exist).
*/
static getPlugins(names = Object.keys(pluginStorage)) {
let result;
names.forEach(name => {
const plugin = getPlugin(name);
if (plugin) {
result = result || {};
result[name] = plugin;
}
});
return result;
}
/**
* Gets a plugin's version, if available
*
* @param {string} name
* The name of a plugin.
*
* @return {string}
* The plugin's version or an empty string.
*/
static getPluginVersion(name) {
const plugin = getPlugin(name);
return plugin && plugin.VERSION || '';
}
}
/**
* Gets a plugin by name if it exists.
*
* @static
* @method getPlugin
* @memberOf Plugin
* @param {string} name
* The name of a plugin.
*
* @returns {typeof Plugin|Function|undefined}
* The plugin (or `undefined`).
*/
Plugin.getPlugin = getPlugin;
/**
* The name of the base plugin class as it is registered.
*
* @type {string}
*/
Plugin.BASE_PLUGIN_NAME = BASE_PLUGIN_NAME;
Plugin.registerPlugin(BASE_PLUGIN_NAME, Plugin);
/**
* Documented in player.js
*
* @ignore
*/
Player.prototype.usingPlugin = function (name) {
return !!this[PLUGIN_CACHE_KEY] && this[PLUGIN_CACHE_KEY][name] === true;
};
/**
* Documented in player.js
*
* @ignore
*/
Player.prototype.hasPlugin = function (name) {
return !!pluginExists(name);
};
/**
* Signals that a plugin is about to be set up on a player.
*
* @event Player#beforepluginsetup
* @type {PluginEventHash}
*/
/**
* Signals that a plugin is about to be set up on a player - by name. The name
* is the name of the plugin.
*
* @event Player#beforepluginsetup:$name
* @type {PluginEventHash}
*/
/**
* Signals that a plugin has just been set up on a player.
*
* @event Player#pluginsetup
* @type {PluginEventHash}
*/
/**
* Signals that a plugin has just been set up on a player - by name. The name
* is the name of the plugin.
*
* @event Player#pluginsetup:$name
* @type {PluginEventHash}
*/
/**
* @typedef {Object} PluginEventHash
*
* @property {string} instance
* For basic plugins, the return value of the plugin function. For
* advanced plugins, the plugin instance on which the event is fired.
*
* @property {string} name
* The name of the plugin.
*
* @property {string} plugin
* For basic plugins, the plugin function. For advanced plugins, the
* plugin class/constructor.
*/
/**
* @file deprecate.js
* @module deprecate
*/
/**
* Decorate a function with a deprecation message the first time it is called.
*
* @param {string} message
* A deprecation message to log the first time the returned function
* is called.
*
* @param {Function} fn
* The function to be deprecated.
*
* @return {Function}
* A wrapper function that will log a deprecation warning the first
* time it is called. The return value will be the return value of
* the wrapped function.
*/
function deprecate(message, fn) {
let warned = false;
return function (...args) {
if (!warned) {
log$1.warn(message);
}
warned = true;
return fn.apply(this, args);
};
}
/**
* Internal function used to mark a function as deprecated in the next major
* version with consistent messaging.
*
* @param {number} major The major version where it will be removed
* @param {string} oldName The old function name
* @param {string} newName The new function name
* @param {Function} fn The function to deprecate
* @return {Function} The decorated function
*/
function deprecateForMajor(major, oldName, newName, fn) {
return deprecate(`${oldName} is deprecated and will be removed in ${major}.0; please use ${newName} instead.`, fn);
}
var VjsErrors = {
NetworkBadStatus: 'networkbadstatus',
NetworkRequestFailed: 'networkrequestfailed',
NetworkRequestAborted: 'networkrequestaborted',
NetworkRequestTimeout: 'networkrequesttimeout',
NetworkBodyParserFailed: 'networkbodyparserfailed',
StreamingHlsPlaylistParserError: 'streaminghlsplaylistparsererror',
StreamingDashManifestParserError: 'streamingdashmanifestparsererror',
StreamingContentSteeringParserError: 'streamingcontentsteeringparsererror',
StreamingVttParserError: 'streamingvttparsererror',
StreamingFailedToSelectNextSegment: 'streamingfailedtoselectnextsegment',
StreamingFailedToDecryptSegment: 'streamingfailedtodecryptsegment',
StreamingFailedToTransmuxSegment: 'streamingfailedtotransmuxsegment',
StreamingFailedToAppendSegment: 'streamingfailedtoappendsegment',
StreamingCodecsChangeError: 'streamingcodecschangeerror'
};
/**
* @file video.js
* @module videojs
*/
/** @import { PlayerReadyCallback } from './player' */
/**
* Normalize an `id` value by trimming off a leading `#`
*
* @private
* @param {string} id
* A string, maybe with a leading `#`.
*
* @return {string}
* The string, without any leading `#`.
*/
const normalizeId = id => id.indexOf('#') === 0 ? id.slice(1) : id;
/**
* The `videojs()` function doubles as the main function for users to create a
* {@link Player} instance as well as the main library namespace.
*
* It can also be used as a getter for a pre-existing {@link Player} instance.
* However, we _strongly_ recommend using `videojs.getPlayer()` for this
* purpose because it avoids any potential for unintended initialization.
*
* Due to [limitations](https://github.com/jsdoc3/jsdoc/issues/955#issuecomment-313829149)
* of our JSDoc template, we cannot properly document this as both a function
* and a namespace, so its function signature is documented here.
*
* #### Arguments
* ##### id
* string|Element, **required**
*
* Video element or video element ID.
*
* ##### options
* Object, optional
*
* Options object for providing settings.
* See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
*
* ##### ready
* {@link Component~ReadyCallback}, optional
*
* A function to be called when the {@link Player} and {@link Tech} are ready.
*
* #### Return Value
*
* The `videojs()` function returns a {@link Player} instance.
*
* @namespace
*
* @borrows AudioTrack as AudioTrack
* @borrows Component.getComponent as getComponent
* @borrows module:events.on as on
* @borrows module:events.one as one
* @borrows module:events.off as off
* @borrows module:events.trigger as trigger
* @borrows EventTarget as EventTarget
* @borrows module:middleware.use as use
* @borrows Player.players as players
* @borrows Plugin.registerPlugin as registerPlugin
* @borrows Plugin.deregisterPlugin as deregisterPlugin
* @borrows Plugin.getPlugins as getPlugins
* @borrows Plugin.getPlugin as getPlugin
* @borrows Plugin.getPluginVersion as getPluginVersion
* @borrows Tech.getTech as getTech
* @borrows Tech.registerTech as registerTech
* @borrows TextTrack as TextTrack
* @borrows VideoTrack as VideoTrack
*
* @param {string|Element} id
* Video element or video element ID.
*
* @param {Object} [options]
* Options object for providing settings.
* See: [Options Guide](https://docs.videojs.com/tutorial-options.html).
*
* @param {PlayerReadyCallback} [ready]
* A function to be called when the {@link Player} and {@link Tech} are
* ready.
*
* @return {Player}
* The `videojs()` function returns a {@link Player|Player} instance.
*/
function videojs(id, options, ready) {
let player = videojs.getPlayer(id);
if (player) {
if (options) {
log$1.warn(`Player "${id}" is already initialised. Options will not be applied.`);
}
if (ready) {
player.ready(ready);
}
return player;
}
const el = typeof id === 'string' ? $('#' + normalizeId(id)) : id;
if (!isEl(el)) {
throw new TypeError('The element or ID supplied is not valid. (videojs)');
}
// document.body.contains(el) will only check if el is contained within that one document.
// This causes problems for elements in iframes.
// Instead, use the element's ownerDocument instead of the global document.
// This will make sure that the element is indeed in the dom of that document.
// Additionally, check that the document in question has a default view.
// If the document is no longer attached to the dom, the defaultView of the document will be null.
// If element is inside Shadow DOM (e.g. is part of a Custom element), ownerDocument.body
// always returns false. Instead, use the Shadow DOM root.
const inShadowDom = 'getRootNode' in el ? el.getRootNode() instanceof window.ShadowRoot : false;
const rootNode = inShadowDom ? el.getRootNode() : el.ownerDocument.body;
if (!el.ownerDocument.defaultView || !rootNode.contains(el)) {
log$1.warn('The element supplied is not included in the DOM');
}
options = options || {};
// Store a copy of the el before modification, if it is to be restored in destroy()
// If div ingest, store the parent div
if (options.restoreEl === true) {
options.restoreEl = (el.parentNode && el.parentNode.hasAttribute && el.parentNode.hasAttribute('data-vjs-player') ? el.parentNode : el).cloneNode(true);
}
hooks('beforesetup').forEach(hookFunction => {
const opts = hookFunction(el, merge$2(options));
if (!isObject$1(opts) || Array.isArray(opts)) {
log$1.error('please return an object in beforesetup hooks');
return;
}
options = merge$2(options, opts);
});
// We get the current "Player" component here in case an integration has
// replaced it with a custom player.
const PlayerComponent = Component$1.getComponent('Player');
player = new PlayerComponent(el, options, ready);
hooks('setup').forEach(hookFunction => hookFunction(player));
return player;
}
videojs.hooks_ = hooks_;
videojs.hooks = hooks;
videojs.hook = hook;
videojs.hookOnce = hookOnce;
videojs.removeHook = removeHook;
// Add default styles
if (window.VIDEOJS_NO_DYNAMIC_STYLE !== true && isReal()) {
let style = $('.vjs-styles-defaults');
if (!style) {
style = createStyleElement('vjs-styles-defaults');
const head = $('head');
if (head) {
head.insertBefore(style, head.firstChild);
}
setTextContent(style, `
.video-js {
width: 300px;
height: 150px;
}
.vjs-fluid:not(.vjs-audio-only-mode) {
padding-top: 56.25%
}
`);
}
}
// Run Auto-load players
// You have to wait at least once in case this script is loaded after your
// video in the DOM (weird behavior only with minified version)
autoSetupTimeout(1, videojs);
/**
* Current Video.js version. Follows [semantic versioning](https://semver.org/).
*
* @type {string}
*/
videojs.VERSION = version$5;
/**
* The global options object. These are the settings that take effect
* if no overrides are specified when the player is created.
*
* @type {Object}
*/
videojs.options = Player.prototype.options_;
/**
* Get an object with the currently created players, keyed by player ID
*
* @return {Object}
* The created players
*/
videojs.getPlayers = () => Player.players;
/**
* Get a single player based on an ID or DOM element.
*
* This is useful if you want to check if an element or ID has an associated
* Video.js player, but not create one if it doesn't.
*
* @param {string|Element} id
* An HTML element - ``, ``, or `` -
* or a string matching the `id` of such an element.
*
* @return {Player|undefined}
* A player instance or `undefined` if there is no player instance
* matching the argument.
*/
videojs.getPlayer = id => {
const players = Player.players;
let tag;
if (typeof id === 'string') {
const nId = normalizeId(id);
const player = players[nId];
if (player) {
return player;
}
tag = $('#' + nId);
} else {
tag = id;
}
if (isEl(tag)) {
const {
player,
playerId
} = tag;
// Element may have a `player` property referring to an already created
// player instance. If so, return that.
if (player || players[playerId]) {
return player || players[playerId];
}
}
};
/**
* Returns an array of all current players.
*
* @return {Array}
* An array of all players. The array will be in the order that
* `Object.keys` provides, which could potentially vary between
* JavaScript engines.
*
*/
videojs.getAllPlayers = () =>
// Disposed players leave a key with a `null` value, so we need to make sure
// we filter those out.
Object.keys(Player.players).map(k => Player.players[k]).filter(Boolean);
videojs.players = Player.players;
videojs.getComponent = Component$1.getComponent;
/**
* Register a component so it can referred to by name. Used when adding to other
* components, either through addChild `component.addChild('myComponent')` or through
* default children options `{ children: ['myComponent'] }`.
*
* > NOTE: You could also just initialize the component before adding.
* `component.addChild(new MyComponent());`
*
* @param {string} name
* The class name of the component
*
* @param {typeof Component} comp
* The component class
*
* @return {typeof Component}
* The newly registered component
*/
videojs.registerComponent = (name, comp) => {
if (Tech.isTech(comp)) {
log$1.warn(`The ${name} tech was registered as a component. It should instead be registered using videojs.registerTech(name, tech)`);
}
return Component$1.registerComponent.call(Component$1, name, comp);
};
videojs.getTech = Tech.getTech;
videojs.registerTech = Tech.registerTech;
videojs.use = use;
/**
* An object that can be returned by a middleware to signify
* that the middleware is being terminated.
*
* @type {object}
* @property {object} middleware.TERMINATOR
*/
Object.defineProperty(videojs, 'middleware', {
value: {},
writeable: false,
enumerable: true
});
Object.defineProperty(videojs.middleware, 'TERMINATOR', {
value: TERMINATOR,
writeable: false,
enumerable: true
});
/**
* A reference to the {@link module:browser|browser utility module} as an object.
*
* @type {Object}
* @see {@link module:browser|browser}
*/
videojs.browser = browser;
/**
* A reference to the {@link module:obj|obj utility module} as an object.
*
* @type {Object}
* @see {@link module:obj|obj}
*/
videojs.obj = Obj;
/**
* Deprecated reference to the {@link module:obj.merge|merge function}
*
* @type {Function}
* @see {@link module:obj.merge|merge}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.merge instead.
*/
videojs.mergeOptions = deprecateForMajor(9, 'videojs.mergeOptions', 'videojs.obj.merge', merge$2);
/**
* Deprecated reference to the {@link module:obj.defineLazyProperty|defineLazyProperty function}
*
* @type {Function}
* @see {@link module:obj.defineLazyProperty|defineLazyProperty}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.obj.defineLazyProperty instead.
*/
videojs.defineLazyProperty = deprecateForMajor(9, 'videojs.defineLazyProperty', 'videojs.obj.defineLazyProperty', defineLazyProperty);
/**
* Deprecated reference to the {@link module:fn.bind_|fn.bind_ function}
*
* @type {Function}
* @see {@link module:fn.bind_|fn.bind_}
* @deprecated Deprecated and will be removed in 9.0. Please use native Function.prototype.bind instead.
*/
videojs.bind = deprecateForMajor(9, 'videojs.bind', 'native Function.prototype.bind', bind_);
videojs.registerPlugin = Plugin.registerPlugin;
videojs.deregisterPlugin = Plugin.deregisterPlugin;
/**
* Deprecated method to register a plugin with Video.js
*
* @deprecated Deprecated and will be removed in 9.0. Use videojs.registerPlugin() instead.
*
* @param {string} name
* The plugin name
*
* @param {typeof Plugin|Function} plugin
* The plugin sub-class or function
*
* @return {typeof Plugin|Function}
*/
videojs.plugin = (name, plugin) => {
log$1.warn('videojs.plugin() is deprecated; use videojs.registerPlugin() instead');
return Plugin.registerPlugin(name, plugin);
};
videojs.getPlugins = Plugin.getPlugins;
videojs.getPlugin = Plugin.getPlugin;
videojs.getPluginVersion = Plugin.getPluginVersion;
/**
* Adding languages so that they're available to all players.
* Example: `videojs.addLanguage('es', { 'Hello': 'Hola' });`
*
* @param {string} code
* The language code or dictionary property
*
* @param {Object} data
* The data values to be translated
*
* @return {Object}
* The resulting language dictionary object
*/
videojs.addLanguage = function (code, data) {
code = ('' + code).toLowerCase();
videojs.options.languages = merge$2(videojs.options.languages, {
[code]: data
});
return videojs.options.languages[code];
};
/**
* A reference to the {@link module:log|log utility module} as an object.
*
* @type {Function}
* @see {@link module:log|log}
*/
videojs.log = log$1;
videojs.createLogger = createLogger;
/**
* A reference to the {@link module:time|time utility module} as an object.
*
* @type {Object}
* @see {@link module:time|time}
*/
videojs.time = Time;
/**
* Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
*
* @type {Function}
* @see {@link module:time.createTimeRanges|createTimeRanges}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
*/
videojs.createTimeRange = deprecateForMajor(9, 'videojs.createTimeRange', 'videojs.time.createTimeRanges', createTimeRanges$1);
/**
* Deprecated reference to the {@link module:time.createTimeRanges|createTimeRanges function}
*
* @type {Function}
* @see {@link module:time.createTimeRanges|createTimeRanges}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.createTimeRanges instead.
*/
videojs.createTimeRanges = deprecateForMajor(9, 'videojs.createTimeRanges', 'videojs.time.createTimeRanges', createTimeRanges$1);
/**
* Deprecated reference to the {@link module:time.formatTime|formatTime function}
*
* @type {Function}
* @see {@link module:time.formatTime|formatTime}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.format instead.
*/
videojs.formatTime = deprecateForMajor(9, 'videojs.formatTime', 'videojs.time.formatTime', formatTime);
/**
* Deprecated reference to the {@link module:time.setFormatTime|setFormatTime function}
*
* @type {Function}
* @see {@link module:time.setFormatTime|setFormatTime}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.setFormat instead.
*/
videojs.setFormatTime = deprecateForMajor(9, 'videojs.setFormatTime', 'videojs.time.setFormatTime', setFormatTime);
/**
* Deprecated reference to the {@link module:time.resetFormatTime|resetFormatTime function}
*
* @type {Function}
* @see {@link module:time.resetFormatTime|resetFormatTime}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.time.resetFormat instead.
*/
videojs.resetFormatTime = deprecateForMajor(9, 'videojs.resetFormatTime', 'videojs.time.resetFormatTime', resetFormatTime);
/**
* Deprecated reference to the {@link module:url.parseUrl|Url.parseUrl function}
*
* @type {Function}
* @see {@link module:url.parseUrl|parseUrl}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.parseUrl instead.
*/
videojs.parseUrl = deprecateForMajor(9, 'videojs.parseUrl', 'videojs.url.parseUrl', parseUrl);
/**
* Deprecated reference to the {@link module:url.isCrossOrigin|Url.isCrossOrigin function}
*
* @type {Function}
* @see {@link module:url.isCrossOrigin|isCrossOrigin}
* @deprecated Deprecated and will be removed in 9.0. Please use videojs.url.isCrossOrigin instead.
*/
videojs.isCrossOrigin = deprecateForMajor(9, 'videojs.isCrossOrigin', 'videojs.url.isCrossOrigin', isCrossOrigin);
videojs.EventTarget = EventTarget$2;
videojs.any = any;
videojs.on = on;
videojs.one = one;
videojs.off = off;
videojs.trigger = trigger;
/**
* A cross-browser XMLHttpRequest wrapper.
*
* @function
* @param {Object} options
* Settings for the request.
*
* @return {XMLHttpRequest|XDomainRequest}
* The request object.
*
* @see https://github.com/Raynos/xhr
*/
videojs.xhr = lib;
videojs.TextTrack = TextTrack;
videojs.AudioTrack = AudioTrack;
videojs.VideoTrack = VideoTrack;
['isEl', 'isTextNode', 'createEl', 'hasClass', 'addClass', 'removeClass', 'toggleClass', 'setAttributes', 'getAttributes', 'emptyEl', 'appendContent', 'insertContent'].forEach(k => {
videojs[k] = function () {
log$1.warn(`videojs.${k}() is deprecated; use videojs.dom.${k}() instead`);
return Dom[k].apply(null, arguments);
};
});
videojs.computedStyle = deprecateForMajor(9, 'videojs.computedStyle', 'videojs.dom.computedStyle', computedStyle);
/**
* A reference to the {@link module:dom|DOM utility module} as an object.
*
* @type {Object}
* @see {@link module:dom|dom}
*/
videojs.dom = Dom;
/**
* A reference to the {@link module:fn|fn utility module} as an object.
*
* @type {Object}
* @see {@link module:fn|fn}
*/
videojs.fn = Fn;
/**
* A reference to the {@link module:num|num utility module} as an object.
*
* @type {Object}
* @see {@link module:num|num}
*/
videojs.num = Num;
/**
* A reference to the {@link module:str|str utility module} as an object.
*
* @type {Object}
* @see {@link module:str|str}
*/
videojs.str = Str;
/**
* A reference to the {@link module:url|URL utility module} as an object.
*
* @type {Object}
* @see {@link module:url|url}
*/
videojs.url = Url;
// The list of possible error types to occur in video.js
videojs.Error = VjsErrors;
createCommonjsModule(function (module, exports) {
/*! @name videojs-contrib-quality-levels @version 4.1.0 @license Apache-2.0 */
(function (global, factory) {
module.exports = factory(videojs) ;
})(commonjsGlobal, function (videojs) {
function _interopDefaultLegacy(e) {
return e && typeof e === 'object' && 'default' in e ? e : {
'default': e
};
}
var videojs__default = /*#__PURE__*/_interopDefaultLegacy(videojs);
/**
* A single QualityLevel.
*
* interface QualityLevel {
* readonly attribute DOMString id;
* attribute DOMString label;
* readonly attribute long width;
* readonly attribute long height;
* readonly attribute long bitrate;
* attribute boolean enabled;
* };
*
* @class QualityLevel
*/
class QualityLevel {
/**
* Creates a QualityLevel
*
* @param {Representation|Object} representation The representation of the quality level
* @param {string} representation.id Unique id of the QualityLevel
* @param {number=} representation.width Resolution width of the QualityLevel
* @param {number=} representation.height Resolution height of the QualityLevel
* @param {number} representation.bandwidth Bitrate of the QualityLevel
* @param {number=} representation.frameRate Frame-rate of the QualityLevel
* @param {Function} representation.enabled Callback to enable/disable QualityLevel
*/
constructor(representation) {
let level = this; // eslint-disable-line
level.id = representation.id;
level.label = level.id;
level.width = representation.width;
level.height = representation.height;
level.bitrate = representation.bandwidth;
level.frameRate = representation.frameRate;
level.enabled_ = representation.enabled;
Object.defineProperty(level, 'enabled', {
/**
* Get whether the QualityLevel is enabled.
*
* @return {boolean} True if the QualityLevel is enabled.
*/
get() {
return level.enabled_();
},
/**
* Enable or disable the QualityLevel.
*
* @param {boolean} enable true to enable QualityLevel, false to disable.
*/
set(enable) {
level.enabled_(enable);
}
});
return level;
}
}
/**
* A list of QualityLevels.
*
* interface QualityLevelList : EventTarget {
* getter QualityLevel (unsigned long index);
* readonly attribute unsigned long length;
* readonly attribute long selectedIndex;
*
* void addQualityLevel(QualityLevel qualityLevel)
* void removeQualityLevel(QualityLevel remove)
* QualityLevel? getQualityLevelById(DOMString id);
*
* attribute EventHandler onchange;
* attribute EventHandler onaddqualitylevel;
* attribute EventHandler onremovequalitylevel;
* };
*
* @extends videojs.EventTarget
* @class QualityLevelList
*/
class QualityLevelList extends videojs__default["default"].EventTarget {
/**
* Creates a QualityLevelList.
*/
constructor() {
super();
let list = this; // eslint-disable-line
list.levels_ = [];
list.selectedIndex_ = -1;
/**
* Get the index of the currently selected QualityLevel.
*
* @returns {number} The index of the selected QualityLevel. -1 if none selected.
* @readonly
*/
Object.defineProperty(list, 'selectedIndex', {
get() {
return list.selectedIndex_;
}
});
/**
* Get the length of the list of QualityLevels.
*
* @returns {number} The length of the list.
* @readonly
*/
Object.defineProperty(list, 'length', {
get() {
return list.levels_.length;
}
});
list[Symbol.iterator] = () => list.levels_.values();
return list;
}
/**
* Adds a quality level to the list.
*
* @param {Representation|Object} representation The representation of the quality level
* @param {string} representation.id Unique id of the QualityLevel
* @param {number=} representation.width Resolution width of the QualityLevel
* @param {number=} representation.height Resolution height of the QualityLevel
* @param {number} representation.bandwidth Bitrate of the QualityLevel
* @param {number=} representation.frameRate Frame-rate of the QualityLevel
* @param {Function} representation.enabled Callback to enable/disable QualityLevel
* @return {QualityLevel} the QualityLevel added to the list
* @method addQualityLevel
*/
addQualityLevel(representation) {
let qualityLevel = this.getQualityLevelById(representation.id);
// Do not add duplicate quality levels
if (qualityLevel) {
return qualityLevel;
}
const index = this.levels_.length;
qualityLevel = new QualityLevel(representation);
if (!('' + index in this)) {
Object.defineProperty(this, index, {
get() {
return this.levels_[index];
}
});
}
this.levels_.push(qualityLevel);
this.trigger({
qualityLevel,
type: 'addqualitylevel'
});
return qualityLevel;
}
/**
* Removes a quality level from the list.
*
* @param {QualityLevel} qualityLevel The QualityLevel to remove from the list.
* @return {QualityLevel|null} the QualityLevel removed or null if nothing removed
* @method removeQualityLevel
*/
removeQualityLevel(qualityLevel) {
let removed = null;
for (let i = 0, l = this.length; i < l; i++) {
if (this[i] === qualityLevel) {
removed = this.levels_.splice(i, 1)[0];
if (this.selectedIndex_ === i) {
this.selectedIndex_ = -1;
} else if (this.selectedIndex_ > i) {
this.selectedIndex_--;
}
break;
}
}
if (removed) {
this.trigger({
qualityLevel,
type: 'removequalitylevel'
});
}
return removed;
}
/**
* Searches for a QualityLevel with the given id.
*
* @param {string} id The id of the QualityLevel to find.
* @return {QualityLevel|null} The QualityLevel with id, or null if not found.
* @method getQualityLevelById
*/
getQualityLevelById(id) {
for (let i = 0, l = this.length; i < l; i++) {
const level = this[i];
if (level.id === id) {
return level;
}
}
return null;
}
/**
* Resets the list of QualityLevels to empty
*
* @method dispose
*/
dispose() {
this.selectedIndex_ = -1;
this.levels_.length = 0;
}
}
/**
* change - The selected QualityLevel has changed.
* addqualitylevel - A QualityLevel has been added to the QualityLevelList.
* removequalitylevel - A QualityLevel has been removed from the QualityLevelList.
*/
QualityLevelList.prototype.allowedEvents_ = {
change: 'change',
addqualitylevel: 'addqualitylevel',
removequalitylevel: 'removequalitylevel'
};
// emulate attribute EventHandler support to allow for feature detection
for (const event in QualityLevelList.prototype.allowedEvents_) {
QualityLevelList.prototype['on' + event] = null;
}
var version = "4.1.0";
/**
* Initialization function for the qualityLevels plugin. Sets up the QualityLevelList and
* event handlers.
*
* @param {Player} player Player object.
* @param {Object} options Plugin options object.
* @return {QualityLevelList} a list of QualityLevels
*/
const initPlugin = function (player, options) {
const originalPluginFn = player.qualityLevels;
const qualityLevelList = new QualityLevelList();
const disposeHandler = function () {
qualityLevelList.dispose();
player.qualityLevels = originalPluginFn;
player.off('dispose', disposeHandler);
};
player.on('dispose', disposeHandler);
player.qualityLevels = () => qualityLevelList;
player.qualityLevels.VERSION = version;
return qualityLevelList;
};
/**
* A video.js plugin.
*
* In the plugin function, the value of `this` is a video.js `Player`
* instance. You cannot rely on the player being in a "ready" state here,
* depending on how the plugin is invoked. This may or may not be important
* to you; if not, remove the wait for "ready"!
*
* @param {Object} options Plugin options object
* @return {QualityLevelList} a list of QualityLevels
*/
const qualityLevels = function (options) {
return initPlugin(this, videojs__default["default"].obj.merge({}, options));
};
// Register the plugin with video.js.
videojs__default["default"].registerPlugin('qualityLevels', qualityLevels);
// Include the version number.
qualityLevels.VERSION = version;
return qualityLevels;
});
});
var urlToolkit = createCommonjsModule(function (module, exports) {
// see https://tools.ietf.org/html/rfc1808
(function (root) {
var URL_REGEX = /^(?=((?:[a-zA-Z0-9+\-.]+:)?))\1(?=((?:\/\/[^\/?#]*)?))\2(?=((?:(?:[^?#\/]*\/)*[^;?#\/]*)?))\3((?:;[^?#]*)?)(\?[^#]*)?(#[^]*)?$/;
var FIRST_SEGMENT_REGEX = /^(?=([^\/?#]*))\1([^]*)$/;
var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/)[^\/]*(?=\/)/g;
var URLToolkit = {
// If opts.alwaysNormalize is true then the path will always be normalized even when it starts with / or //
// E.g
// With opts.alwaysNormalize = false (default, spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/f/../g
// With opts.alwaysNormalize = true (not spec compliant)
// http://a.com/b/cd + /e/f/../g => http://a.com/e/g
buildAbsoluteURL: function (baseURL, relativeURL, opts) {
opts = opts || {};
// remove any remaining space and CRLF
baseURL = baseURL.trim();
relativeURL = relativeURL.trim();
if (!relativeURL) {
// 2a) If the embedded URL is entirely empty, it inherits the
// entire base URL (i.e., is set equal to the base URL)
// and we are done.
if (!opts.alwaysNormalize) {
return baseURL;
}
var basePartsForNormalise = URLToolkit.parseURL(baseURL);
if (!basePartsForNormalise) {
throw new Error('Error trying to parse base URL.');
}
basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
return URLToolkit.buildURLFromParts(basePartsForNormalise);
}
var relativeParts = URLToolkit.parseURL(relativeURL);
if (!relativeParts) {
throw new Error('Error trying to parse relative URL.');
}
if (relativeParts.scheme) {
// 2b) If the embedded URL starts with a scheme name, it is
// interpreted as an absolute URL and we are done.
if (!opts.alwaysNormalize) {
return relativeURL;
}
relativeParts.path = URLToolkit.normalizePath(relativeParts.path);
return URLToolkit.buildURLFromParts(relativeParts);
}
var baseParts = URLToolkit.parseURL(baseURL);
if (!baseParts) {
throw new Error('Error trying to parse base URL.');
}
if (!baseParts.netLoc && baseParts.path && baseParts.path[0] !== '/') {
// If netLoc missing and path doesn't start with '/', assume everthing before the first '/' is the netLoc
// This causes 'example.com/a' to be handled as '//example.com/a' instead of '/example.com/a'
var pathParts = FIRST_SEGMENT_REGEX.exec(baseParts.path);
baseParts.netLoc = pathParts[1];
baseParts.path = pathParts[2];
}
if (baseParts.netLoc && !baseParts.path) {
baseParts.path = '/';
}
var builtParts = {
// 2c) Otherwise, the embedded URL inherits the scheme of
// the base URL.
scheme: baseParts.scheme,
netLoc: relativeParts.netLoc,
path: null,
params: relativeParts.params,
query: relativeParts.query,
fragment: relativeParts.fragment
};
if (!relativeParts.netLoc) {
// 3) If the embedded URL's is non-empty, we skip to
// Step 7. Otherwise, the embedded URL inherits the
// (if any) of the base URL.
builtParts.netLoc = baseParts.netLoc;
// 4) If the embedded URL path is preceded by a slash "/", the
// path is not relative and we skip to Step 7.
if (relativeParts.path[0] !== '/') {
if (!relativeParts.path) {
// 5) If the embedded URL path is empty (and not preceded by a
// slash), then the embedded URL inherits the base URL path
builtParts.path = baseParts.path;
// 5a) if the embedded URL's is non-empty, we skip to
// step 7; otherwise, it inherits the of the base
// URL (if any) and
if (!relativeParts.params) {
builtParts.params = baseParts.params;
// 5b) if the embedded URL's is non-empty, we skip to
// step 7; otherwise, it inherits the of the base
// URL (if any) and we skip to step 7.
if (!relativeParts.query) {
builtParts.query = baseParts.query;
}
}
} else {
// 6) The last segment of the base URL's path (anything
// following the rightmost slash "/", or the entire path if no
// slash is present) is removed and the embedded URL's path is
// appended in its place.
var baseURLPath = baseParts.path;
var newPath = baseURLPath.substring(0, baseURLPath.lastIndexOf('/') + 1) + relativeParts.path;
builtParts.path = URLToolkit.normalizePath(newPath);
}
}
}
if (builtParts.path === null) {
builtParts.path = opts.alwaysNormalize ? URLToolkit.normalizePath(relativeParts.path) : relativeParts.path;
}
return URLToolkit.buildURLFromParts(builtParts);
},
parseURL: function (url) {
var parts = URL_REGEX.exec(url);
if (!parts) {
return null;
}
return {
scheme: parts[1] || '',
netLoc: parts[2] || '',
path: parts[3] || '',
params: parts[4] || '',
query: parts[5] || '',
fragment: parts[6] || ''
};
},
normalizePath: function (path) {
// The following operations are
// then applied, in order, to the new path:
// 6a) All occurrences of "./", where "." is a complete path
// segment, are removed.
// 6b) If the path ends with "." as a complete path segment,
// that "." is removed.
path = path.split('').reverse().join('').replace(SLASH_DOT_REGEX, '');
// 6c) All occurrences of "/../", where is a
// complete path segment not equal to "..", are removed.
// Removal of these path segments is performed iteratively,
// removing the leftmost matching pattern on each iteration,
// until no matching pattern remains.
// 6d) If the path ends with "/..", where is a
// complete path segment not equal to "..", that
// "/.." is removed.
while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {}
return path.split('').reverse().join('');
},
buildURLFromParts: function (parts) {
return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
}
};
module.exports = URLToolkit;
})();
});
var DEFAULT_LOCATION = 'http://example.com';
var resolveUrl$1 = function resolveUrl(baseUrl, relativeUrl) {
// return early if we don't need to resolve
if (/^[a-z]+:/i.test(relativeUrl)) {
return relativeUrl;
} // if baseUrl is a data URI, ignore it and resolve everything relative to window.location
if (/^data:/.test(baseUrl)) {
baseUrl = window.location && window.location.href || '';
} // IE11 supports URL but not the URL constructor
// feature detect the behavior we want
var nativeURL = typeof window.URL === 'function';
var protocolLess = /^\/\//.test(baseUrl); // remove location if window.location isn't available (i.e. we're in node)
// and if baseUrl isn't an absolute url
var removeLocation = !window.location && !/\/\//i.test(baseUrl); // if the base URL is relative then combine with the current location
if (nativeURL) {
baseUrl = new window.URL(baseUrl, window.location || DEFAULT_LOCATION);
} else if (!/\/\//i.test(baseUrl)) {
baseUrl = urlToolkit.buildAbsoluteURL(window.location && window.location.href || '', baseUrl);
}
if (nativeURL) {
var newUrl = new URL(relativeUrl, baseUrl); // if we're a protocol-less url, remove the protocol
// and if we're location-less, remove the location
// otherwise, return the url unmodified
if (removeLocation) {
return newUrl.href.slice(DEFAULT_LOCATION.length);
} else if (protocolLess) {
return newUrl.href.slice(newUrl.protocol.length);
}
return newUrl.href;
}
return urlToolkit.buildAbsoluteURL(baseUrl, relativeUrl);
};
/**
* @file stream.js
*/
/**
* A lightweight readable stream implemention that handles event dispatching.
*
* @class Stream
*/
var Stream = /*#__PURE__*/function () {
function Stream() {
this.listeners = {};
}
/**
* Add a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener the callback to be invoked when an event of
* the specified type occurs
*/
var _proto = Stream.prototype;
_proto.on = function on(type, listener) {
if (!this.listeners[type]) {
this.listeners[type] = [];
}
this.listeners[type].push(listener);
}
/**
* Remove a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener a function previously registered for this
* type of event through `on`
* @return {boolean} if we could turn it off or not
*/;
_proto.off = function off(type, listener) {
if (!this.listeners[type]) {
return false;
}
var index = this.listeners[type].indexOf(listener); // TODO: which is better?
// In Video.js we slice listener functions
// on trigger so that it does not mess up the order
// while we loop through.
//
// Here we slice on off so that the loop in trigger
// can continue using it's old reference to loop without
// messing up the order.
this.listeners[type] = this.listeners[type].slice(0);
this.listeners[type].splice(index, 1);
return index > -1;
}
/**
* Trigger an event of the specified type on this stream. Any additional
* arguments to this function are passed as parameters to event listeners.
*
* @param {string} type the event name
*/;
_proto.trigger = function trigger(type) {
var callbacks = this.listeners[type];
if (!callbacks) {
return;
} // Slicing the arguments on every invocation of this method
// can add a significant amount of overhead. Avoid the
// intermediate object creation for the common case of a
// single callback argument
if (arguments.length === 2) {
var length = callbacks.length;
for (var i = 0; i < length; ++i) {
callbacks[i].call(this, arguments[1]);
}
} else {
var args = Array.prototype.slice.call(arguments, 1);
var _length = callbacks.length;
for (var _i = 0; _i < _length; ++_i) {
callbacks[_i].apply(this, args);
}
}
}
/**
* Destroys the stream and cleans up.
*/;
_proto.dispose = function dispose() {
this.listeners = {};
}
/**
* Forwards all `data` events on this stream to the destination stream. The
* destination stream should provide a method `push` to receive the data
* events as they arrive.
*
* @param {Stream} destination the stream that will receive all `data` events
* @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
*/;
_proto.pipe = function pipe(destination) {
this.on('data', function (data) {
destination.push(data);
});
};
return Stream;
}();
var atob$1 = function atob(s) {
return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
};
function decodeB64ToUint8Array$1(b64Text) {
var decodedString = atob$1(b64Text);
var array = new Uint8Array(decodedString.length);
for (var i = 0; i < decodedString.length; i++) {
array[i] = decodedString.charCodeAt(i);
}
return array;
}
/*! @name m3u8-parser @version 7.1.0 @license Apache-2.0 */
/**
* @file m3u8/line-stream.js
*/
/**
* A stream that buffers string input and generates a `data` event for each
* line.
*
* @class LineStream
* @extends Stream
*/
class LineStream extends Stream {
constructor() {
super();
this.buffer = '';
}
/**
* Add new data to be parsed.
*
* @param {string} data the text to process
*/
push(data) {
let nextNewline;
this.buffer += data;
nextNewline = this.buffer.indexOf('\n');
for (; nextNewline > -1; nextNewline = this.buffer.indexOf('\n')) {
this.trigger('data', this.buffer.substring(0, nextNewline));
this.buffer = this.buffer.substring(nextNewline + 1);
}
}
}
const TAB = String.fromCharCode(0x09);
const parseByterange = function (byterangeString) {
// optionally match and capture 0+ digits before `@`
// optionally match and capture 0+ digits after `@`
const match = /([0-9.]*)?@?([0-9.]*)?/.exec(byterangeString || '');
const result = {};
if (match[1]) {
result.length = parseInt(match[1], 10);
}
if (match[2]) {
result.offset = parseInt(match[2], 10);
}
return result;
};
/**
* "forgiving" attribute list psuedo-grammar:
* attributes -> keyvalue (',' keyvalue)*
* keyvalue -> key '=' value
* key -> [^=]*
* value -> '"' [^"]* '"' | [^,]*
*/
const attributeSeparator = function () {
const key = '[^=]*';
const value = '"[^"]*"|[^,]*';
const keyvalue = '(?:' + key + ')=(?:' + value + ')';
return new RegExp('(?:^|,)(' + keyvalue + ')');
};
/**
* Parse attributes from a line given the separator
*
* @param {string} attributes the attribute line to parse
*/
const parseAttributes$1 = function (attributes) {
const result = {};
if (!attributes) {
return result;
} // split the string using attributes as the separator
const attrs = attributes.split(attributeSeparator());
let i = attrs.length;
let attr;
while (i--) {
// filter out unmatched portions of the string
if (attrs[i] === '') {
continue;
} // split the key and value
attr = /([^=]*)=(.*)/.exec(attrs[i]).slice(1); // trim whitespace and remove optional quotes around the value
attr[0] = attr[0].replace(/^\s+|\s+$/g, '');
attr[1] = attr[1].replace(/^\s+|\s+$/g, '');
attr[1] = attr[1].replace(/^['"](.*)['"]$/g, '$1');
result[attr[0]] = attr[1];
}
return result;
};
/**
* A line-level M3U8 parser event stream. It expects to receive input one
* line at a time and performs a context-free parse of its contents. A stream
* interpretation of a manifest can be useful if the manifest is expected to
* be too large to fit comfortably into memory or the entirety of the input
* is not immediately available. Otherwise, it's probably much easier to work
* with a regular `Parser` object.
*
* Produces `data` events with an object that captures the parser's
* interpretation of the input. That object has a property `tag` that is one
* of `uri`, `comment`, or `tag`. URIs only have a single additional
* property, `line`, which captures the entirety of the input without
* interpretation. Comments similarly have a single additional property
* `text` which is the input without the leading `#`.
*
* Tags always have a property `tagType` which is the lower-cased version of
* the M3U8 directive without the `#EXT` or `#EXT-X-` prefix. For instance,
* `#EXT-X-MEDIA-SEQUENCE` becomes `media-sequence` when parsed. Unrecognized
* tags are given the tag type `unknown` and a single additional property
* `data` with the remainder of the input.
*
* @class ParseStream
* @extends Stream
*/
class ParseStream extends Stream {
constructor() {
super();
this.customParsers = [];
this.tagMappers = [];
}
/**
* Parses an additional line of input.
*
* @param {string} line a single line of an M3U8 file to parse
*/
push(line) {
let match;
let event; // strip whitespace
line = line.trim();
if (line.length === 0) {
// ignore empty lines
return;
} // URIs
if (line[0] !== '#') {
this.trigger('data', {
type: 'uri',
uri: line
});
return;
} // map tags
const newLines = this.tagMappers.reduce((acc, mapper) => {
const mappedLine = mapper(line); // skip if unchanged
if (mappedLine === line) {
return acc;
}
return acc.concat([mappedLine]);
}, [line]);
newLines.forEach(newLine => {
for (let i = 0; i < this.customParsers.length; i++) {
if (this.customParsers[i].call(this, newLine)) {
return;
}
} // Comments
if (newLine.indexOf('#EXT') !== 0) {
this.trigger('data', {
type: 'comment',
text: newLine.slice(1)
});
return;
} // strip off any carriage returns here so the regex matching
// doesn't have to account for them.
newLine = newLine.replace('\r', ''); // Tags
match = /^#EXTM3U/.exec(newLine);
if (match) {
this.trigger('data', {
type: 'tag',
tagType: 'm3u'
});
return;
}
match = /^#EXTINF:([0-9\.]*)?,?(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'inf'
};
if (match[1]) {
event.duration = parseFloat(match[1]);
}
if (match[2]) {
event.title = match[2];
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-TARGETDURATION:([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'targetduration'
};
if (match[1]) {
event.duration = parseInt(match[1], 10);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-VERSION:([0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'version'
};
if (match[1]) {
event.version = parseInt(match[1], 10);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-MEDIA-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'media-sequence'
};
if (match[1]) {
event.number = parseInt(match[1], 10);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-DISCONTINUITY-SEQUENCE:(\-?[0-9.]*)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'discontinuity-sequence'
};
if (match[1]) {
event.number = parseInt(match[1], 10);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-PLAYLIST-TYPE:(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'playlist-type'
};
if (match[1]) {
event.playlistType = match[1];
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-BYTERANGE:(.*)?$/.exec(newLine);
if (match) {
event = _extends$1(parseByterange(match[1]), {
type: 'tag',
tagType: 'byterange'
});
this.trigger('data', event);
return;
}
match = /^#EXT-X-ALLOW-CACHE:(YES|NO)?/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'allow-cache'
};
if (match[1]) {
event.allowed = !/NO/.test(match[1]);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-MAP:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'map'
};
if (match[1]) {
const attributes = parseAttributes$1(match[1]);
if (attributes.URI) {
event.uri = attributes.URI;
}
if (attributes.BYTERANGE) {
event.byterange = parseByterange(attributes.BYTERANGE);
}
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-STREAM-INF:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'stream-inf'
};
if (match[1]) {
event.attributes = parseAttributes$1(match[1]);
if (event.attributes.RESOLUTION) {
const split = event.attributes.RESOLUTION.split('x');
const resolution = {};
if (split[0]) {
resolution.width = parseInt(split[0], 10);
}
if (split[1]) {
resolution.height = parseInt(split[1], 10);
}
event.attributes.RESOLUTION = resolution;
}
if (event.attributes.BANDWIDTH) {
event.attributes.BANDWIDTH = parseInt(event.attributes.BANDWIDTH, 10);
}
if (event.attributes['FRAME-RATE']) {
event.attributes['FRAME-RATE'] = parseFloat(event.attributes['FRAME-RATE']);
}
if (event.attributes['PROGRAM-ID']) {
event.attributes['PROGRAM-ID'] = parseInt(event.attributes['PROGRAM-ID'], 10);
}
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-MEDIA:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'media'
};
if (match[1]) {
event.attributes = parseAttributes$1(match[1]);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-ENDLIST/.exec(newLine);
if (match) {
this.trigger('data', {
type: 'tag',
tagType: 'endlist'
});
return;
}
match = /^#EXT-X-DISCONTINUITY/.exec(newLine);
if (match) {
this.trigger('data', {
type: 'tag',
tagType: 'discontinuity'
});
return;
}
match = /^#EXT-X-PROGRAM-DATE-TIME:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'program-date-time'
};
if (match[1]) {
event.dateTimeString = match[1];
event.dateTimeObject = new Date(match[1]);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-KEY:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'key'
};
if (match[1]) {
event.attributes = parseAttributes$1(match[1]); // parse the IV string into a Uint32Array
if (event.attributes.IV) {
if (event.attributes.IV.substring(0, 2).toLowerCase() === '0x') {
event.attributes.IV = event.attributes.IV.substring(2);
}
event.attributes.IV = event.attributes.IV.match(/.{8}/g);
event.attributes.IV[0] = parseInt(event.attributes.IV[0], 16);
event.attributes.IV[1] = parseInt(event.attributes.IV[1], 16);
event.attributes.IV[2] = parseInt(event.attributes.IV[2], 16);
event.attributes.IV[3] = parseInt(event.attributes.IV[3], 16);
event.attributes.IV = new Uint32Array(event.attributes.IV);
}
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-START:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'start'
};
if (match[1]) {
event.attributes = parseAttributes$1(match[1]);
event.attributes['TIME-OFFSET'] = parseFloat(event.attributes['TIME-OFFSET']);
event.attributes.PRECISE = /YES/.test(event.attributes.PRECISE);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-OUT-CONT:(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-out-cont'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-OUT:(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-out'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-CUE-IN:(.*)?$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'cue-in'
};
if (match[1]) {
event.data = match[1];
} else {
event.data = '';
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-SKIP:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'skip'
};
event.attributes = parseAttributes$1(match[1]);
if (event.attributes.hasOwnProperty('SKIPPED-SEGMENTS')) {
event.attributes['SKIPPED-SEGMENTS'] = parseInt(event.attributes['SKIPPED-SEGMENTS'], 10);
}
if (event.attributes.hasOwnProperty('RECENTLY-REMOVED-DATERANGES')) {
event.attributes['RECENTLY-REMOVED-DATERANGES'] = event.attributes['RECENTLY-REMOVED-DATERANGES'].split(TAB);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-PART:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'part'
};
event.attributes = parseAttributes$1(match[1]);
['DURATION'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseFloat(event.attributes[key]);
}
});
['INDEPENDENT', 'GAP'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = /YES/.test(event.attributes[key]);
}
});
if (event.attributes.hasOwnProperty('BYTERANGE')) {
event.attributes.byterange = parseByterange(event.attributes.BYTERANGE);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-SERVER-CONTROL:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'server-control'
};
event.attributes = parseAttributes$1(match[1]);
['CAN-SKIP-UNTIL', 'PART-HOLD-BACK', 'HOLD-BACK'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseFloat(event.attributes[key]);
}
});
['CAN-SKIP-DATERANGES', 'CAN-BLOCK-RELOAD'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = /YES/.test(event.attributes[key]);
}
});
this.trigger('data', event);
return;
}
match = /^#EXT-X-PART-INF:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'part-inf'
};
event.attributes = parseAttributes$1(match[1]);
['PART-TARGET'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseFloat(event.attributes[key]);
}
});
this.trigger('data', event);
return;
}
match = /^#EXT-X-PRELOAD-HINT:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'preload-hint'
};
event.attributes = parseAttributes$1(match[1]);
['BYTERANGE-START', 'BYTERANGE-LENGTH'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseInt(event.attributes[key], 10);
const subkey = key === 'BYTERANGE-LENGTH' ? 'length' : 'offset';
event.attributes.byterange = event.attributes.byterange || {};
event.attributes.byterange[subkey] = event.attributes[key]; // only keep the parsed byterange object.
delete event.attributes[key];
}
});
this.trigger('data', event);
return;
}
match = /^#EXT-X-RENDITION-REPORT:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'rendition-report'
};
event.attributes = parseAttributes$1(match[1]);
['LAST-MSN', 'LAST-PART'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseInt(event.attributes[key], 10);
}
});
this.trigger('data', event);
return;
}
match = /^#EXT-X-DATERANGE:(.*)$/.exec(newLine);
if (match && match[1]) {
event = {
type: 'tag',
tagType: 'daterange'
};
event.attributes = parseAttributes$1(match[1]);
['ID', 'CLASS'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = String(event.attributes[key]);
}
});
['START-DATE', 'END-DATE'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = new Date(event.attributes[key]);
}
});
['DURATION', 'PLANNED-DURATION'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = parseFloat(event.attributes[key]);
}
});
['END-ON-NEXT'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = /YES/i.test(event.attributes[key]);
}
});
['SCTE35-CMD', ' SCTE35-OUT', 'SCTE35-IN'].forEach(function (key) {
if (event.attributes.hasOwnProperty(key)) {
event.attributes[key] = event.attributes[key].toString(16);
}
});
const clientAttributePattern = /^X-([A-Z]+-)+[A-Z]+$/;
for (const key in event.attributes) {
if (!clientAttributePattern.test(key)) {
continue;
}
const isHexaDecimal = /[0-9A-Fa-f]{6}/g.test(event.attributes[key]);
const isDecimalFloating = /^\d+(\.\d+)?$/.test(event.attributes[key]);
event.attributes[key] = isHexaDecimal ? event.attributes[key].toString(16) : isDecimalFloating ? parseFloat(event.attributes[key]) : String(event.attributes[key]);
}
this.trigger('data', event);
return;
}
match = /^#EXT-X-INDEPENDENT-SEGMENTS/.exec(newLine);
if (match) {
this.trigger('data', {
type: 'tag',
tagType: 'independent-segments'
});
return;
}
match = /^#EXT-X-CONTENT-STEERING:(.*)$/.exec(newLine);
if (match) {
event = {
type: 'tag',
tagType: 'content-steering'
};
event.attributes = parseAttributes$1(match[1]);
this.trigger('data', event);
return;
} // unknown tag type
this.trigger('data', {
type: 'tag',
data: newLine.slice(4)
});
});
}
/**
* Add a parser for custom headers
*
* @param {Object} options a map of options for the added parser
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {string} options.customType the custom type to register to the output
* @param {Function} [options.dataParser] function to parse the line into an object
* @param {boolean} [options.segment] should tag data be attached to the segment object
*/
addParser({
expression,
customType,
dataParser,
segment
}) {
if (typeof dataParser !== 'function') {
dataParser = line => line;
}
this.customParsers.push(line => {
const match = expression.exec(line);
if (match) {
this.trigger('data', {
type: 'custom',
data: dataParser(line),
customType,
segment
});
return true;
}
});
}
/**
* Add a custom header mapper
*
* @param {Object} options
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {Function} options.map function to translate tag into a different tag
*/
addTagMapper({
expression,
map
}) {
const mapFn = line => {
if (expression.test(line)) {
return map(line);
}
return line;
};
this.tagMappers.push(mapFn);
}
}
const camelCase = str => str.toLowerCase().replace(/-(\w)/g, a => a[1].toUpperCase());
const camelCaseKeys = function (attributes) {
const result = {};
Object.keys(attributes).forEach(function (key) {
result[camelCase(key)] = attributes[key];
});
return result;
}; // set SERVER-CONTROL hold back based upon targetDuration and partTargetDuration
// we need this helper because defaults are based upon targetDuration and
// partTargetDuration being set, but they may not be if SERVER-CONTROL appears before
// target durations are set.
const setHoldBack = function (manifest) {
const {
serverControl,
targetDuration,
partTargetDuration
} = manifest;
if (!serverControl) {
return;
}
const tag = '#EXT-X-SERVER-CONTROL';
const hb = 'holdBack';
const phb = 'partHoldBack';
const minTargetDuration = targetDuration && targetDuration * 3;
const minPartDuration = partTargetDuration && partTargetDuration * 2;
if (targetDuration && !serverControl.hasOwnProperty(hb)) {
serverControl[hb] = minTargetDuration;
this.trigger('info', {
message: `${tag} defaulting HOLD-BACK to targetDuration * 3 (${minTargetDuration}).`
});
}
if (minTargetDuration && serverControl[hb] < minTargetDuration) {
this.trigger('warn', {
message: `${tag} clamping HOLD-BACK (${serverControl[hb]}) to targetDuration * 3 (${minTargetDuration})`
});
serverControl[hb] = minTargetDuration;
} // default no part hold back to part target duration * 3
if (partTargetDuration && !serverControl.hasOwnProperty(phb)) {
serverControl[phb] = partTargetDuration * 3;
this.trigger('info', {
message: `${tag} defaulting PART-HOLD-BACK to partTargetDuration * 3 (${serverControl[phb]}).`
});
} // if part hold back is too small default it to part target duration * 2
if (partTargetDuration && serverControl[phb] < minPartDuration) {
this.trigger('warn', {
message: `${tag} clamping PART-HOLD-BACK (${serverControl[phb]}) to partTargetDuration * 2 (${minPartDuration}).`
});
serverControl[phb] = minPartDuration;
}
};
/**
* A parser for M3U8 files. The current interpretation of the input is
* exposed as a property `manifest` on parser objects. It's just two lines to
* create and parse a manifest once you have the contents available as a string:
*
* ```js
* var parser = new m3u8.Parser();
* parser.push(xhr.responseText);
* ```
*
* New input can later be applied to update the manifest object by calling
* `push` again.
*
* The parser attempts to create a usable manifest object even if the
* underlying input is somewhat nonsensical. It emits `info` and `warning`
* events during the parse if it encounters input that seems invalid or
* requires some property of the manifest object to be defaulted.
*
* @class Parser
* @extends Stream
*/
class Parser extends Stream {
constructor() {
super();
this.lineStream = new LineStream();
this.parseStream = new ParseStream();
this.lineStream.pipe(this.parseStream);
this.lastProgramDateTime = null;
/* eslint-disable consistent-this */
const self = this;
/* eslint-enable consistent-this */
const uris = [];
let currentUri = {}; // if specified, the active EXT-X-MAP definition
let currentMap; // if specified, the active decryption key
let key;
let hasParts = false;
const noop = function () {};
const defaultMediaGroups = {
'AUDIO': {},
'VIDEO': {},
'CLOSED-CAPTIONS': {},
'SUBTITLES': {}
}; // This is the Widevine UUID from DASH IF IOP. The same exact string is
// used in MPDs with Widevine encrypted streams.
const widevineUuid = 'urn:uuid:edef8ba9-79d6-4ace-a3c8-27dcd51d21ed'; // group segments into numbered timelines delineated by discontinuities
let currentTimeline = 0; // the manifest is empty until the parse stream begins delivering data
this.manifest = {
allowCache: true,
discontinuityStarts: [],
dateRanges: [],
segments: []
}; // keep track of the last seen segment's byte range end, as segments are not required
// to provide the offset, in which case it defaults to the next byte after the
// previous segment
let lastByterangeEnd = 0; // keep track of the last seen part's byte range end.
let lastPartByterangeEnd = 0;
const dateRangeTags = {};
this.on('end', () => {
// only add preloadSegment if we don't yet have a uri for it.
// and we actually have parts/preloadHints
if (currentUri.uri || !currentUri.parts && !currentUri.preloadHints) {
return;
}
if (!currentUri.map && currentMap) {
currentUri.map = currentMap;
}
if (!currentUri.key && key) {
currentUri.key = key;
}
if (!currentUri.timeline && typeof currentTimeline === 'number') {
currentUri.timeline = currentTimeline;
}
this.manifest.preloadSegment = currentUri;
}); // update the manifest with the m3u8 entry from the parse stream
this.parseStream.on('data', function (entry) {
let mediaGroup;
let rendition;
({
tag() {
// switch based on the tag type
(({
version() {
if (entry.version) {
this.manifest.version = entry.version;
}
},
'allow-cache'() {
this.manifest.allowCache = entry.allowed;
if (!('allowed' in entry)) {
this.trigger('info', {
message: 'defaulting allowCache to YES'
});
this.manifest.allowCache = true;
}
},
byterange() {
const byterange = {};
if ('length' in entry) {
currentUri.byterange = byterange;
byterange.length = entry.length;
if (!('offset' in entry)) {
/*
* From the latest spec (as of this writing):
* https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.2
*
* Same text since EXT-X-BYTERANGE's introduction in draft 7:
* https://tools.ietf.org/html/draft-pantos-http-live-streaming-07#section-3.3.1)
*
* "If o [offset] is not present, the sub-range begins at the next byte
* following the sub-range of the previous media segment."
*/
entry.offset = lastByterangeEnd;
}
}
if ('offset' in entry) {
currentUri.byterange = byterange;
byterange.offset = entry.offset;
}
lastByterangeEnd = byterange.offset + byterange.length;
},
endlist() {
this.manifest.endList = true;
},
inf() {
if (!('mediaSequence' in this.manifest)) {
this.manifest.mediaSequence = 0;
this.trigger('info', {
message: 'defaulting media sequence to zero'
});
}
if (!('discontinuitySequence' in this.manifest)) {
this.manifest.discontinuitySequence = 0;
this.trigger('info', {
message: 'defaulting discontinuity sequence to zero'
});
}
if (entry.title) {
currentUri.title = entry.title;
}
if (entry.duration > 0) {
currentUri.duration = entry.duration;
}
if (entry.duration === 0) {
currentUri.duration = 0.01;
this.trigger('info', {
message: 'updating zero segment duration to a small value'
});
}
this.manifest.segments = uris;
},
key() {
if (!entry.attributes) {
this.trigger('warn', {
message: 'ignoring key declaration without attribute list'
});
return;
} // clear the active encryption key
if (entry.attributes.METHOD === 'NONE') {
key = null;
return;
}
if (!entry.attributes.URI) {
this.trigger('warn', {
message: 'ignoring key declaration without URI'
});
return;
}
if (entry.attributes.KEYFORMAT === 'com.apple.streamingkeydelivery') {
this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
this.manifest.contentProtection['com.apple.fps.1_0'] = {
attributes: entry.attributes
};
return;
}
if (entry.attributes.KEYFORMAT === 'com.microsoft.playready') {
this.manifest.contentProtection = this.manifest.contentProtection || {}; // TODO: add full support for this.
this.manifest.contentProtection['com.microsoft.playready'] = {
uri: entry.attributes.URI
};
return;
} // check if the content is encrypted for Widevine
// Widevine/HLS spec: https://storage.googleapis.com/wvdocs/Widevine_DRM_HLS.pdf
if (entry.attributes.KEYFORMAT === widevineUuid) {
const VALID_METHODS = ['SAMPLE-AES', 'SAMPLE-AES-CTR', 'SAMPLE-AES-CENC'];
if (VALID_METHODS.indexOf(entry.attributes.METHOD) === -1) {
this.trigger('warn', {
message: 'invalid key method provided for Widevine'
});
return;
}
if (entry.attributes.METHOD === 'SAMPLE-AES-CENC') {
this.trigger('warn', {
message: 'SAMPLE-AES-CENC is deprecated, please use SAMPLE-AES-CTR instead'
});
}
if (entry.attributes.URI.substring(0, 23) !== 'data:text/plain;base64,') {
this.trigger('warn', {
message: 'invalid key URI provided for Widevine'
});
return;
}
if (!(entry.attributes.KEYID && entry.attributes.KEYID.substring(0, 2) === '0x')) {
this.trigger('warn', {
message: 'invalid key ID provided for Widevine'
});
return;
} // if Widevine key attributes are valid, store them as `contentProtection`
// on the manifest to emulate Widevine tag structure in a DASH mpd
this.manifest.contentProtection = this.manifest.contentProtection || {};
this.manifest.contentProtection['com.widevine.alpha'] = {
attributes: {
schemeIdUri: entry.attributes.KEYFORMAT,
// remove '0x' from the key id string
keyId: entry.attributes.KEYID.substring(2)
},
// decode the base64-encoded PSSH box
pssh: decodeB64ToUint8Array$1(entry.attributes.URI.split(',')[1])
};
return;
}
if (!entry.attributes.METHOD) {
this.trigger('warn', {
message: 'defaulting key method to AES-128'
});
} // setup an encryption key for upcoming segments
key = {
method: entry.attributes.METHOD || 'AES-128',
uri: entry.attributes.URI
};
if (typeof entry.attributes.IV !== 'undefined') {
key.iv = entry.attributes.IV;
}
},
'media-sequence'() {
if (!isFinite(entry.number)) {
this.trigger('warn', {
message: 'ignoring invalid media sequence: ' + entry.number
});
return;
}
this.manifest.mediaSequence = entry.number;
},
'discontinuity-sequence'() {
if (!isFinite(entry.number)) {
this.trigger('warn', {
message: 'ignoring invalid discontinuity sequence: ' + entry.number
});
return;
}
this.manifest.discontinuitySequence = entry.number;
currentTimeline = entry.number;
},
'playlist-type'() {
if (!/VOD|EVENT/.test(entry.playlistType)) {
this.trigger('warn', {
message: 'ignoring unknown playlist type: ' + entry.playlist
});
return;
}
this.manifest.playlistType = entry.playlistType;
},
map() {
currentMap = {};
if (entry.uri) {
currentMap.uri = entry.uri;
}
if (entry.byterange) {
currentMap.byterange = entry.byterange;
}
if (key) {
currentMap.key = key;
}
},
'stream-inf'() {
this.manifest.playlists = uris;
this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
if (!entry.attributes) {
this.trigger('warn', {
message: 'ignoring empty stream-inf attributes'
});
return;
}
if (!currentUri.attributes) {
currentUri.attributes = {};
}
_extends$1(currentUri.attributes, entry.attributes);
},
media() {
this.manifest.mediaGroups = this.manifest.mediaGroups || defaultMediaGroups;
if (!(entry.attributes && entry.attributes.TYPE && entry.attributes['GROUP-ID'] && entry.attributes.NAME)) {
this.trigger('warn', {
message: 'ignoring incomplete or missing media group'
});
return;
} // find the media group, creating defaults as necessary
const mediaGroupType = this.manifest.mediaGroups[entry.attributes.TYPE];
mediaGroupType[entry.attributes['GROUP-ID']] = mediaGroupType[entry.attributes['GROUP-ID']] || {};
mediaGroup = mediaGroupType[entry.attributes['GROUP-ID']]; // collect the rendition metadata
rendition = {
default: /yes/i.test(entry.attributes.DEFAULT)
};
if (rendition.default) {
rendition.autoselect = true;
} else {
rendition.autoselect = /yes/i.test(entry.attributes.AUTOSELECT);
}
if (entry.attributes.LANGUAGE) {
rendition.language = entry.attributes.LANGUAGE;
}
if (entry.attributes.URI) {
rendition.uri = entry.attributes.URI;
}
if (entry.attributes['INSTREAM-ID']) {
rendition.instreamId = entry.attributes['INSTREAM-ID'];
}
if (entry.attributes.CHARACTERISTICS) {
rendition.characteristics = entry.attributes.CHARACTERISTICS;
}
if (entry.attributes.FORCED) {
rendition.forced = /yes/i.test(entry.attributes.FORCED);
} // insert the new rendition
mediaGroup[entry.attributes.NAME] = rendition;
},
discontinuity() {
currentTimeline += 1;
currentUri.discontinuity = true;
this.manifest.discontinuityStarts.push(uris.length);
},
'program-date-time'() {
if (typeof this.manifest.dateTimeString === 'undefined') {
// PROGRAM-DATE-TIME is a media-segment tag, but for backwards
// compatibility, we add the first occurence of the PROGRAM-DATE-TIME tag
// to the manifest object
// TODO: Consider removing this in future major version
this.manifest.dateTimeString = entry.dateTimeString;
this.manifest.dateTimeObject = entry.dateTimeObject;
}
currentUri.dateTimeString = entry.dateTimeString;
currentUri.dateTimeObject = entry.dateTimeObject;
const {
lastProgramDateTime
} = this;
this.lastProgramDateTime = new Date(entry.dateTimeString).getTime(); // We should extrapolate Program Date Time backward only during first program date time occurrence.
// Once we have at least one program date time point, we can always extrapolate it forward using lastProgramDateTime reference.
if (lastProgramDateTime === null) {
// Extrapolate Program Date Time backward
// Since it is first program date time occurrence we're assuming that
// all this.manifest.segments have no program date time info
this.manifest.segments.reduceRight((programDateTime, segment) => {
segment.programDateTime = programDateTime - segment.duration * 1000;
return segment.programDateTime;
}, this.lastProgramDateTime);
}
},
targetduration() {
if (!isFinite(entry.duration) || entry.duration < 0) {
this.trigger('warn', {
message: 'ignoring invalid target duration: ' + entry.duration
});
return;
}
this.manifest.targetDuration = entry.duration;
setHoldBack.call(this, this.manifest);
},
start() {
if (!entry.attributes || isNaN(entry.attributes['TIME-OFFSET'])) {
this.trigger('warn', {
message: 'ignoring start declaration without appropriate attribute list'
});
return;
}
this.manifest.start = {
timeOffset: entry.attributes['TIME-OFFSET'],
precise: entry.attributes.PRECISE
};
},
'cue-out'() {
currentUri.cueOut = entry.data;
},
'cue-out-cont'() {
currentUri.cueOutCont = entry.data;
},
'cue-in'() {
currentUri.cueIn = entry.data;
},
'skip'() {
this.manifest.skip = camelCaseKeys(entry.attributes);
this.warnOnMissingAttributes_('#EXT-X-SKIP', entry.attributes, ['SKIPPED-SEGMENTS']);
},
'part'() {
hasParts = true; // parts are always specifed before a segment
const segmentIndex = this.manifest.segments.length;
const part = camelCaseKeys(entry.attributes);
currentUri.parts = currentUri.parts || [];
currentUri.parts.push(part);
if (part.byterange) {
if (!part.byterange.hasOwnProperty('offset')) {
part.byterange.offset = lastPartByterangeEnd;
}
lastPartByterangeEnd = part.byterange.offset + part.byterange.length;
}
const partIndex = currentUri.parts.length - 1;
this.warnOnMissingAttributes_(`#EXT-X-PART #${partIndex} for segment #${segmentIndex}`, entry.attributes, ['URI', 'DURATION']);
if (this.manifest.renditionReports) {
this.manifest.renditionReports.forEach((r, i) => {
if (!r.hasOwnProperty('lastPart')) {
this.trigger('warn', {
message: `#EXT-X-RENDITION-REPORT #${i} lacks required attribute(s): LAST-PART`
});
}
});
}
},
'server-control'() {
const attrs = this.manifest.serverControl = camelCaseKeys(entry.attributes);
if (!attrs.hasOwnProperty('canBlockReload')) {
attrs.canBlockReload = false;
this.trigger('info', {
message: '#EXT-X-SERVER-CONTROL defaulting CAN-BLOCK-RELOAD to false'
});
}
setHoldBack.call(this, this.manifest);
if (attrs.canSkipDateranges && !attrs.hasOwnProperty('canSkipUntil')) {
this.trigger('warn', {
message: '#EXT-X-SERVER-CONTROL lacks required attribute CAN-SKIP-UNTIL which is required when CAN-SKIP-DATERANGES is set'
});
}
},
'preload-hint'() {
// parts are always specifed before a segment
const segmentIndex = this.manifest.segments.length;
const hint = camelCaseKeys(entry.attributes);
const isPart = hint.type && hint.type === 'PART';
currentUri.preloadHints = currentUri.preloadHints || [];
currentUri.preloadHints.push(hint);
if (hint.byterange) {
if (!hint.byterange.hasOwnProperty('offset')) {
// use last part byterange end or zero if not a part.
hint.byterange.offset = isPart ? lastPartByterangeEnd : 0;
if (isPart) {
lastPartByterangeEnd = hint.byterange.offset + hint.byterange.length;
}
}
}
const index = currentUri.preloadHints.length - 1;
this.warnOnMissingAttributes_(`#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex}`, entry.attributes, ['TYPE', 'URI']);
if (!hint.type) {
return;
} // search through all preload hints except for the current one for
// a duplicate type.
for (let i = 0; i < currentUri.preloadHints.length - 1; i++) {
const otherHint = currentUri.preloadHints[i];
if (!otherHint.type) {
continue;
}
if (otherHint.type === hint.type) {
this.trigger('warn', {
message: `#EXT-X-PRELOAD-HINT #${index} for segment #${segmentIndex} has the same TYPE ${hint.type} as preload hint #${i}`
});
}
}
},
'rendition-report'() {
const report = camelCaseKeys(entry.attributes);
this.manifest.renditionReports = this.manifest.renditionReports || [];
this.manifest.renditionReports.push(report);
const index = this.manifest.renditionReports.length - 1;
const required = ['LAST-MSN', 'URI'];
if (hasParts) {
required.push('LAST-PART');
}
this.warnOnMissingAttributes_(`#EXT-X-RENDITION-REPORT #${index}`, entry.attributes, required);
},
'part-inf'() {
this.manifest.partInf = camelCaseKeys(entry.attributes);
this.warnOnMissingAttributes_('#EXT-X-PART-INF', entry.attributes, ['PART-TARGET']);
if (this.manifest.partInf.partTarget) {
this.manifest.partTargetDuration = this.manifest.partInf.partTarget;
}
setHoldBack.call(this, this.manifest);
},
'daterange'() {
this.manifest.dateRanges.push(camelCaseKeys(entry.attributes));
const index = this.manifest.dateRanges.length - 1;
this.warnOnMissingAttributes_(`#EXT-X-DATERANGE #${index}`, entry.attributes, ['ID', 'START-DATE']);
const dateRange = this.manifest.dateRanges[index];
if (dateRange.endDate && dateRange.startDate && new Date(dateRange.endDate) < new Date(dateRange.startDate)) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE END-DATE must be equal to or later than the value of the START-DATE'
});
}
if (dateRange.duration && dateRange.duration < 0) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE DURATION must not be negative'
});
}
if (dateRange.plannedDuration && dateRange.plannedDuration < 0) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE PLANNED-DURATION must not be negative'
});
}
const endOnNextYes = !!dateRange.endOnNext;
if (endOnNextYes && !dateRange.class) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must have a CLASS attribute'
});
}
if (endOnNextYes && (dateRange.duration || dateRange.endDate)) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE with an END-ON-NEXT=YES attribute must not contain DURATION or END-DATE attributes'
});
}
if (dateRange.duration && dateRange.endDate) {
const startDate = dateRange.startDate;
const newDateInSeconds = startDate.getTime() + dateRange.duration * 1000;
this.manifest.dateRanges[index].endDate = new Date(newDateInSeconds);
}
if (!dateRangeTags[dateRange.id]) {
dateRangeTags[dateRange.id] = dateRange;
} else {
for (const attribute in dateRangeTags[dateRange.id]) {
if (!!dateRange[attribute] && JSON.stringify(dateRangeTags[dateRange.id][attribute]) !== JSON.stringify(dateRange[attribute])) {
this.trigger('warn', {
message: 'EXT-X-DATERANGE tags with the same ID in a playlist must have the same attributes values'
});
break;
}
} // if tags with the same ID do not have conflicting attributes, merge them
const dateRangeWithSameId = this.manifest.dateRanges.findIndex(dateRangeToFind => dateRangeToFind.id === dateRange.id);
this.manifest.dateRanges[dateRangeWithSameId] = _extends$1(this.manifest.dateRanges[dateRangeWithSameId], dateRange);
dateRangeTags[dateRange.id] = _extends$1(dateRangeTags[dateRange.id], dateRange); // after merging, delete the duplicate dateRange that was added last
this.manifest.dateRanges.pop();
}
},
'independent-segments'() {
this.manifest.independentSegments = true;
},
'content-steering'() {
this.manifest.contentSteering = camelCaseKeys(entry.attributes);
this.warnOnMissingAttributes_('#EXT-X-CONTENT-STEERING', entry.attributes, ['SERVER-URI']);
}
})[entry.tagType] || noop).call(self);
},
uri() {
currentUri.uri = entry.uri;
uris.push(currentUri); // if no explicit duration was declared, use the target duration
if (this.manifest.targetDuration && !('duration' in currentUri)) {
this.trigger('warn', {
message: 'defaulting segment duration to the target duration'
});
currentUri.duration = this.manifest.targetDuration;
} // annotate with encryption information, if necessary
if (key) {
currentUri.key = key;
}
currentUri.timeline = currentTimeline; // annotate with initialization segment information, if necessary
if (currentMap) {
currentUri.map = currentMap;
} // reset the last byterange end as it needs to be 0 between parts
lastPartByterangeEnd = 0; // Once we have at least one program date time we can always extrapolate it forward
if (this.lastProgramDateTime !== null) {
currentUri.programDateTime = this.lastProgramDateTime;
this.lastProgramDateTime += currentUri.duration * 1000;
} // prepare for the next URI
currentUri = {};
},
comment() {// comments are not important for playback
},
custom() {
// if this is segment-level data attach the output to the segment
if (entry.segment) {
currentUri.custom = currentUri.custom || {};
currentUri.custom[entry.customType] = entry.data; // if this is manifest-level data attach to the top level manifest object
} else {
this.manifest.custom = this.manifest.custom || {};
this.manifest.custom[entry.customType] = entry.data;
}
}
})[entry.type].call(self);
});
}
warnOnMissingAttributes_(identifier, attributes, required) {
const missing = [];
required.forEach(function (key) {
if (!attributes.hasOwnProperty(key)) {
missing.push(key);
}
});
if (missing.length) {
this.trigger('warn', {
message: `${identifier} lacks required attribute(s): ${missing.join(', ')}`
});
}
}
/**
* Parse the input string and update the manifest object.
*
* @param {string} chunk a potentially incomplete portion of the manifest
*/
push(chunk) {
this.lineStream.push(chunk);
}
/**
* Flush any remaining input. This can be handy if the last line of an M3U8
* manifest did not contain a trailing newline but the file has been
* completely received.
*/
end() {
// flush any buffered input
this.lineStream.push('\n');
if (this.manifest.dateRanges.length && this.lastProgramDateTime === null) {
this.trigger('warn', {
message: 'A playlist with EXT-X-DATERANGE tag must contain atleast one EXT-X-PROGRAM-DATE-TIME tag'
});
}
this.lastProgramDateTime = null;
this.trigger('end');
}
/**
* Add an additional parser for non-standard tags
*
* @param {Object} options a map of options for the added parser
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {string} options.customType the custom type to register to the output
* @param {Function} [options.dataParser] function to parse the line into an object
* @param {boolean} [options.segment] should tag data be attached to the segment object
*/
addParser(options) {
this.parseStream.addParser(options);
}
/**
* Add a custom header mapper
*
* @param {Object} options
* @param {RegExp} options.expression a regular expression to match the custom header
* @param {Function} options.map function to translate tag into a different tag
*/
addTagMapper(options) {
this.parseStream.addTagMapper(options);
}
}
var regexs = {
// to determine mime types
mp4: /^(av0?1|avc0?[1234]|vp0?9|flac|opus|mp3|mp4a|mp4v|stpp.ttml.im1t)/,
webm: /^(vp0?[89]|av0?1|opus|vorbis)/,
ogg: /^(vp0?[89]|theora|flac|opus|vorbis)/,
// to determine if a codec is audio or video
video: /^(av0?1|avc0?[1234]|vp0?[89]|hvc1|hev1|theora|mp4v)/,
audio: /^(mp4a|flac|vorbis|opus|ac-[34]|ec-3|alac|mp3|speex|aac)/,
text: /^(stpp.ttml.im1t)/,
// mux.js support regex
muxerVideo: /^(avc0?1)/,
muxerAudio: /^(mp4a)/,
// match nothing as muxer does not support text right now.
// there cannot never be a character before the start of a string
// so this matches nothing.
muxerText: /a^/
};
var mediaTypes = ['video', 'audio', 'text'];
var upperMediaTypes = ['Video', 'Audio', 'Text'];
/**
* Replace the old apple-style `avc1..` codec string with the standard
* `avc1.`
*
* @param {string} codec
* Codec string to translate
* @return {string}
* The translated codec string
*/
var translateLegacyCodec = function translateLegacyCodec(codec) {
if (!codec) {
return codec;
}
return codec.replace(/avc1\.(\d+)\.(\d+)/i, function (orig, profile, avcLevel) {
var profileHex = ('00' + Number(profile).toString(16)).slice(-2);
var avcLevelHex = ('00' + Number(avcLevel).toString(16)).slice(-2);
return 'avc1.' + profileHex + '00' + avcLevelHex;
});
};
/**
* @typedef {Object} ParsedCodecInfo
* @property {number} codecCount
* Number of codecs parsed
* @property {string} [videoCodec]
* Parsed video codec (if found)
* @property {string} [videoObjectTypeIndicator]
* Video object type indicator (if found)
* @property {string|null} audioProfile
* Audio profile
*/
/**
* Parses a codec string to retrieve the number of codecs specified, the video codec and
* object type indicator, and the audio profile.
*
* @param {string} [codecString]
* The codec string to parse
* @return {ParsedCodecInfo}
* Parsed codec info
*/
var parseCodecs = function parseCodecs(codecString) {
if (codecString === void 0) {
codecString = '';
}
var codecs = codecString.split(',');
var result = [];
codecs.forEach(function (codec) {
codec = codec.trim();
var codecType;
mediaTypes.forEach(function (name) {
var match = regexs[name].exec(codec.toLowerCase());
if (!match || match.length <= 1) {
return;
}
codecType = name; // maintain codec case
var type = codec.substring(0, match[1].length);
var details = codec.replace(type, '');
result.push({
type: type,
details: details,
mediaType: name
});
});
if (!codecType) {
result.push({
type: codec,
details: '',
mediaType: 'unknown'
});
}
});
return result;
};
/**
* Returns a ParsedCodecInfo object for the default alternate audio playlist if there is
* a default alternate audio playlist for the provided audio group.
*
* @param {Object} master
* The master playlist
* @param {string} audioGroupId
* ID of the audio group for which to find the default codec info
* @return {ParsedCodecInfo}
* Parsed codec info
*/
var codecsFromDefault = function codecsFromDefault(master, audioGroupId) {
if (!master.mediaGroups.AUDIO || !audioGroupId) {
return null;
}
var audioGroup = master.mediaGroups.AUDIO[audioGroupId];
if (!audioGroup) {
return null;
}
for (var name in audioGroup) {
var audioType = audioGroup[name];
if (audioType.default && audioType.playlists) {
// codec should be the same for all playlists within the audio type
return parseCodecs(audioType.playlists[0].attributes.CODECS);
}
}
return null;
};
var isAudioCodec = function isAudioCodec(codec) {
if (codec === void 0) {
codec = '';
}
return regexs.audio.test(codec.trim().toLowerCase());
};
var isTextCodec = function isTextCodec(codec) {
if (codec === void 0) {
codec = '';
}
return regexs.text.test(codec.trim().toLowerCase());
};
var getMimeForCodec = function getMimeForCodec(codecString) {
if (!codecString || typeof codecString !== 'string') {
return;
}
var codecs = codecString.toLowerCase().split(',').map(function (c) {
return translateLegacyCodec(c.trim());
}); // default to video type
var type = 'video'; // only change to audio type if the only codec we have is
// audio
if (codecs.length === 1 && isAudioCodec(codecs[0])) {
type = 'audio';
} else if (codecs.length === 1 && isTextCodec(codecs[0])) {
// text uses application/ for now
type = 'application';
} // default the container to mp4
var container = 'mp4'; // every codec must be able to go into the container
// for that container to be the correct one
if (codecs.every(function (c) {
return regexs.mp4.test(c);
})) {
container = 'mp4';
} else if (codecs.every(function (c) {
return regexs.webm.test(c);
})) {
container = 'webm';
} else if (codecs.every(function (c) {
return regexs.ogg.test(c);
})) {
container = 'ogg';
}
return type + "/" + container + ";codecs=\"" + codecString + "\"";
};
var browserSupportsCodec = function browserSupportsCodec(codecString) {
if (codecString === void 0) {
codecString = '';
}
return window.MediaSource && window.MediaSource.isTypeSupported && window.MediaSource.isTypeSupported(getMimeForCodec(codecString)) || false;
};
var muxerSupportsCodec = function muxerSupportsCodec(codecString) {
if (codecString === void 0) {
codecString = '';
}
return codecString.toLowerCase().split(',').every(function (codec) {
codec = codec.trim(); // any match is supported.
for (var i = 0; i < upperMediaTypes.length; i++) {
var type = upperMediaTypes[i];
if (regexs["muxer" + type].test(codec)) {
return true;
}
}
return false;
});
};
var DEFAULT_AUDIO_CODEC = 'mp4a.40.2';
var DEFAULT_VIDEO_CODEC = 'avc1.4d400d';
var MPEGURL_REGEX = /^(audio|video|application)\/(x-|vnd\.apple\.)?mpegurl/i;
var DASH_REGEX = /^application\/dash\+xml/i;
/**
* Returns a string that describes the type of source based on a video source object's
* media type.
*
* @see {@link https://dev.w3.org/html5/pf-summary/video.html#dom-source-type|Source Type}
*
* @param {string} type
* Video source object media type
* @return {('hls'|'dash'|'vhs-json'|null)}
* VHS source type string
*/
var simpleTypeFromSourceType = function simpleTypeFromSourceType(type) {
if (MPEGURL_REGEX.test(type)) {
return 'hls';
}
if (DASH_REGEX.test(type)) {
return 'dash';
} // Denotes the special case of a manifest object passed to http-streaming instead of a
// source URL.
//
// See https://en.wikipedia.org/wiki/Media_type for details on specifying media types.
//
// In this case, vnd stands for vendor, video.js for the organization, VHS for this
// project, and the +json suffix identifies the structure of the media type.
if (type === 'application/vnd.videojs.vhs+json') {
return 'vhs-json';
}
return null;
};
// const log2 = Math.log2 ? Math.log2 : (x) => (Math.log(x) / Math.log(2));
// we used to do this with log2 but BigInt does not support builtin math
// Math.ceil(log2(x));
var countBits = function countBits(x) {
return x.toString(2).length;
}; // count the number of whole bytes it would take to represent a number
var countBytes = function countBytes(x) {
return Math.ceil(countBits(x) / 8);
};
var isArrayBufferView = function isArrayBufferView(obj) {
if (ArrayBuffer.isView === 'function') {
return ArrayBuffer.isView(obj);
}
return obj && obj.buffer instanceof ArrayBuffer;
};
var isTypedArray = function isTypedArray(obj) {
return isArrayBufferView(obj);
};
var toUint8 = function toUint8(bytes) {
if (bytes instanceof Uint8Array) {
return bytes;
}
if (!Array.isArray(bytes) && !isTypedArray(bytes) && !(bytes instanceof ArrayBuffer)) {
// any non-number or NaN leads to empty uint8array
// eslint-disable-next-line
if (typeof bytes !== 'number' || typeof bytes === 'number' && bytes !== bytes) {
bytes = 0;
} else {
bytes = [bytes];
}
}
return new Uint8Array(bytes && bytes.buffer || bytes, bytes && bytes.byteOffset || 0, bytes && bytes.byteLength || 0);
};
var BigInt = window.BigInt || Number;
var BYTE_TABLE = [BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
(function () {
var a = new Uint16Array([0xFFCC]);
var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
if (b[0] === 0xFF) {
return 'big';
}
if (b[0] === 0xCC) {
return 'little';
}
return 'unknown';
})();
var bytesToNumber = function bytesToNumber(bytes, _temp) {
var _ref = _temp === void 0 ? {} : _temp,
_ref$signed = _ref.signed,
signed = _ref$signed === void 0 ? false : _ref$signed,
_ref$le = _ref.le,
le = _ref$le === void 0 ? false : _ref$le;
bytes = toUint8(bytes);
var fn = le ? 'reduce' : 'reduceRight';
var obj = bytes[fn] ? bytes[fn] : Array.prototype[fn];
var number = obj.call(bytes, function (total, byte, i) {
var exponent = le ? i : Math.abs(i + 1 - bytes.length);
return total + BigInt(byte) * BYTE_TABLE[exponent];
}, BigInt(0));
if (signed) {
var max = BYTE_TABLE[bytes.length] / BigInt(2) - BigInt(1);
number = BigInt(number);
if (number > max) {
number -= max;
number -= max;
number -= BigInt(2);
}
}
return Number(number);
};
var numberToBytes = function numberToBytes(number, _temp2) {
var _ref2 = _temp2 === void 0 ? {} : _temp2,
_ref2$le = _ref2.le,
le = _ref2$le === void 0 ? false : _ref2$le;
// eslint-disable-next-line
if (typeof number !== 'bigint' && typeof number !== 'number' || typeof number === 'number' && number !== number) {
number = 0;
}
number = BigInt(number);
var byteCount = countBytes(number);
var bytes = new Uint8Array(new ArrayBuffer(byteCount));
for (var i = 0; i < byteCount; i++) {
var byteIndex = le ? i : Math.abs(i + 1 - bytes.length);
bytes[byteIndex] = Number(number / BYTE_TABLE[i] & BigInt(0xFF));
if (number < 0) {
bytes[byteIndex] = Math.abs(~bytes[byteIndex]);
bytes[byteIndex] -= i === 0 ? 1 : 2;
}
}
return bytes;
};
var stringToBytes = function stringToBytes(string, stringIsBytes) {
if (typeof string !== 'string' && string && typeof string.toString === 'function') {
string = string.toString();
}
if (typeof string !== 'string') {
return new Uint8Array();
} // If the string already is bytes, we don't have to do this
// otherwise we do this so that we split multi length characters
// into individual bytes
if (!stringIsBytes) {
string = unescape(encodeURIComponent(string));
}
var view = new Uint8Array(string.length);
for (var i = 0; i < string.length; i++) {
view[i] = string.charCodeAt(i);
}
return view;
};
var concatTypedArrays = function concatTypedArrays() {
for (var _len = arguments.length, buffers = new Array(_len), _key = 0; _key < _len; _key++) {
buffers[_key] = arguments[_key];
}
buffers = buffers.filter(function (b) {
return b && (b.byteLength || b.length) && typeof b !== 'string';
});
if (buffers.length <= 1) {
// for 0 length we will return empty uint8
// for 1 length we return the first uint8
return toUint8(buffers[0]);
}
var totalLen = buffers.reduce(function (total, buf, i) {
return total + (buf.byteLength || buf.length);
}, 0);
var tempBuffer = new Uint8Array(totalLen);
var offset = 0;
buffers.forEach(function (buf) {
buf = toUint8(buf);
tempBuffer.set(buf, offset);
offset += buf.byteLength;
});
return tempBuffer;
};
/**
* Check if the bytes "b" are contained within bytes "a".
*
* @param {Uint8Array|Array} a
* Bytes to check in
*
* @param {Uint8Array|Array} b
* Bytes to check for
*
* @param {Object} options
* options
*
* @param {Array|Uint8Array} [offset=0]
* offset to use when looking at bytes in a
*
* @param {Array|Uint8Array} [mask=[]]
* mask to use on bytes before comparison.
*
* @return {boolean}
* If all bytes in b are inside of a, taking into account
* bit masks.
*/
var bytesMatch = function bytesMatch(a, b, _temp3) {
var _ref3 = _temp3 === void 0 ? {} : _temp3,
_ref3$offset = _ref3.offset,
offset = _ref3$offset === void 0 ? 0 : _ref3$offset,
_ref3$mask = _ref3.mask,
mask = _ref3$mask === void 0 ? [] : _ref3$mask;
a = toUint8(a);
b = toUint8(b); // ie 11 does not support uint8 every
var fn = b.every ? b.every : Array.prototype.every;
return b.length && a.length - offset >= b.length &&
// ie 11 doesn't support every on uin8
fn.call(b, function (bByte, i) {
var aByte = mask[i] ? mask[i] & a[offset + i] : a[offset + i];
return bByte === aByte;
});
};
/**
* Loops through all supported media groups in master and calls the provided
* callback for each group
*
* @param {Object} master
* The parsed master manifest object
* @param {string[]} groups
* The media groups to call the callback for
* @param {Function} callback
* Callback to call for each media group
*/
var forEachMediaGroup$1 = function forEachMediaGroup(master, groups, callback) {
groups.forEach(function (mediaType) {
for (var groupKey in master.mediaGroups[mediaType]) {
for (var labelKey in master.mediaGroups[mediaType][groupKey]) {
var mediaProperties = master.mediaGroups[mediaType][groupKey][labelKey];
callback(mediaProperties, mediaType, groupKey, labelKey);
}
}
});
};
var atob = function atob(s) {
return window.atob ? window.atob(s) : Buffer.from(s, 'base64').toString('binary');
};
function decodeB64ToUint8Array(b64Text) {
var decodedString = atob(b64Text);
var array = new Uint8Array(decodedString.length);
for (var i = 0; i < decodedString.length; i++) {
array[i] = decodedString.charCodeAt(i);
}
return array;
}
/**
* Ponyfill for `Array.prototype.find` which is only available in ES6 runtimes.
*
* Works with anything that has a `length` property and index access properties, including NodeList.
*
* @template {unknown} T
* @param {Array | ({length:number, [number]: T})} list
* @param {function (item: T, index: number, list:Array | ({length:number, [number]: T})):boolean} predicate
* @param {Partial>?} ac `Array.prototype` by default,
* allows injecting a custom implementation in tests
* @returns {T | undefined}
*
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find
* @see https://tc39.es/ecma262/multipage/indexed-collections.html#sec-array.prototype.find
*/
function find$1(list, predicate, ac) {
if (ac === undefined) {
ac = Array.prototype;
}
if (list && typeof ac.find === 'function') {
return ac.find.call(list, predicate);
}
for (var i = 0; i < list.length; i++) {
if (Object.prototype.hasOwnProperty.call(list, i)) {
var item = list[i];
if (predicate.call(undefined, item, i, list)) {
return item;
}
}
}
}
/**
* "Shallow freezes" an object to render it immutable.
* Uses `Object.freeze` if available,
* otherwise the immutability is only in the type.
*
* Is used to create "enum like" objects.
*
* @template T
* @param {T} object the object to freeze
* @param {Pick = Object} oc `Object` by default,
* allows to inject custom object constructor for tests
* @returns {Readonly}
*
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze
*/
function freeze(object, oc) {
if (oc === undefined) {
oc = Object;
}
return oc && typeof oc.freeze === 'function' ? oc.freeze(object) : object;
}
/**
* Since we can not rely on `Object.assign` we provide a simplified version
* that is sufficient for our needs.
*
* @param {Object} target
* @param {Object | null | undefined} source
*
* @returns {Object} target
* @throws TypeError if target is not an object
*
* @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/assign
* @see https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-object.assign
*/
function assign(target, source) {
if (target === null || typeof target !== 'object') {
throw new TypeError('target is not an object');
}
for (var key in source) {
if (Object.prototype.hasOwnProperty.call(source, key)) {
target[key] = source[key];
}
}
return target;
}
/**
* All mime types that are allowed as input to `DOMParser.parseFromString`
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString#Argument02 MDN
* @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#domparsersupportedtype WHATWG HTML Spec
* @see DOMParser.prototype.parseFromString
*/
var MIME_TYPE = freeze({
/**
* `text/html`, the only mime type that triggers treating an XML document as HTML.
*
* @see DOMParser.SupportedType.isHTML
* @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
* @see https://en.wikipedia.org/wiki/HTML Wikipedia
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
* @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring WHATWG HTML Spec
*/
HTML: 'text/html',
/**
* Helper method to check a mime type if it indicates an HTML document
*
* @param {string} [value]
* @returns {boolean}
*
* @see https://www.iana.org/assignments/media-types/text/html IANA MimeType registration
* @see https://en.wikipedia.org/wiki/HTML Wikipedia
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMParser/parseFromString MDN
* @see https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring */
isHTML: function (value) {
return value === MIME_TYPE.HTML;
},
/**
* `application/xml`, the standard mime type for XML documents.
*
* @see https://www.iana.org/assignments/media-types/application/xml IANA MimeType registration
* @see https://tools.ietf.org/html/rfc7303#section-9.1 RFC 7303
* @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
*/
XML_APPLICATION: 'application/xml',
/**
* `text/html`, an alias for `application/xml`.
*
* @see https://tools.ietf.org/html/rfc7303#section-9.2 RFC 7303
* @see https://www.iana.org/assignments/media-types/text/xml IANA MimeType registration
* @see https://en.wikipedia.org/wiki/XML_and_MIME Wikipedia
*/
XML_TEXT: 'text/xml',
/**
* `application/xhtml+xml`, indicates an XML document that has the default HTML namespace,
* but is parsed as an XML document.
*
* @see https://www.iana.org/assignments/media-types/application/xhtml+xml IANA MimeType registration
* @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument WHATWG DOM Spec
* @see https://en.wikipedia.org/wiki/XHTML Wikipedia
*/
XML_XHTML_APPLICATION: 'application/xhtml+xml',
/**
* `image/svg+xml`,
*
* @see https://www.iana.org/assignments/media-types/image/svg+xml IANA MimeType registration
* @see https://www.w3.org/TR/SVG11/ W3C SVG 1.1
* @see https://en.wikipedia.org/wiki/Scalable_Vector_Graphics Wikipedia
*/
XML_SVG_IMAGE: 'image/svg+xml'
});
/**
* Namespaces that are used in this code base.
*
* @see http://www.w3.org/TR/REC-xml-names
*/
var NAMESPACE$3 = freeze({
/**
* The XHTML namespace.
*
* @see http://www.w3.org/1999/xhtml
*/
HTML: 'http://www.w3.org/1999/xhtml',
/**
* Checks if `uri` equals `NAMESPACE.HTML`.
*
* @param {string} [uri]
*
* @see NAMESPACE.HTML
*/
isHTML: function (uri) {
return uri === NAMESPACE$3.HTML;
},
/**
* The SVG namespace.
*
* @see http://www.w3.org/2000/svg
*/
SVG: 'http://www.w3.org/2000/svg',
/**
* The `xml:` namespace.
*
* @see http://www.w3.org/XML/1998/namespace
*/
XML: 'http://www.w3.org/XML/1998/namespace',
/**
* The `xmlns:` namespace
*
* @see https://www.w3.org/2000/xmlns/
*/
XMLNS: 'http://www.w3.org/2000/xmlns/'
});
var assign_1 = assign;
var find_1 = find$1;
var freeze_1 = freeze;
var MIME_TYPE_1 = MIME_TYPE;
var NAMESPACE_1 = NAMESPACE$3;
var conventions = {
assign: assign_1,
find: find_1,
freeze: freeze_1,
MIME_TYPE: MIME_TYPE_1,
NAMESPACE: NAMESPACE_1
};
var find = conventions.find;
var NAMESPACE$2 = conventions.NAMESPACE;
/**
* A prerequisite for `[].filter`, to drop elements that are empty
* @param {string} input
* @returns {boolean}
*/
function notEmptyString(input) {
return input !== '';
}
/**
* @see https://infra.spec.whatwg.org/#split-on-ascii-whitespace
* @see https://infra.spec.whatwg.org/#ascii-whitespace
*
* @param {string} input
* @returns {string[]} (can be empty)
*/
function splitOnASCIIWhitespace(input) {
// U+0009 TAB, U+000A LF, U+000C FF, U+000D CR, U+0020 SPACE
return input ? input.split(/[\t\n\f\r ]+/).filter(notEmptyString) : [];
}
/**
* Adds element as a key to current if it is not already present.
*
* @param {Record} current
* @param {string} element
* @returns {Record}
*/
function orderedSetReducer(current, element) {
if (!current.hasOwnProperty(element)) {
current[element] = true;
}
return current;
}
/**
* @see https://infra.spec.whatwg.org/#ordered-set
* @param {string} input
* @returns {string[]}
*/
function toOrderedSet(input) {
if (!input) return [];
var list = splitOnASCIIWhitespace(input);
return Object.keys(list.reduce(orderedSetReducer, {}));
}
/**
* Uses `list.indexOf` to implement something like `Array.prototype.includes`,
* which we can not rely on being available.
*
* @param {any[]} list
* @returns {function(any): boolean}
*/
function arrayIncludes(list) {
return function (element) {
return list && list.indexOf(element) !== -1;
};
}
function copy(src, dest) {
for (var p in src) {
if (Object.prototype.hasOwnProperty.call(src, p)) {
dest[p] = src[p];
}
}
}
/**
^\w+\.prototype\.([_\w]+)\s*=\s*((?:.*\{\s*?[\r\n][\s\S]*?^})|\S.*?(?=[;\r\n]));?
^\w+\.prototype\.([_\w]+)\s*=\s*(\S.*?(?=[;\r\n]));?
*/
function _extends(Class, Super) {
var pt = Class.prototype;
if (!(pt instanceof Super)) {
function t() {}
t.prototype = Super.prototype;
t = new t();
copy(pt, t);
Class.prototype = pt = t;
}
if (pt.constructor != Class) {
if (typeof Class != 'function') {
console.error("unknown Class:" + Class);
}
pt.constructor = Class;
}
}
// Node Types
var NodeType = {};
var ELEMENT_NODE = NodeType.ELEMENT_NODE = 1;
var ATTRIBUTE_NODE = NodeType.ATTRIBUTE_NODE = 2;
var TEXT_NODE = NodeType.TEXT_NODE = 3;
var CDATA_SECTION_NODE = NodeType.CDATA_SECTION_NODE = 4;
var ENTITY_REFERENCE_NODE = NodeType.ENTITY_REFERENCE_NODE = 5;
var ENTITY_NODE = NodeType.ENTITY_NODE = 6;
var PROCESSING_INSTRUCTION_NODE = NodeType.PROCESSING_INSTRUCTION_NODE = 7;
var COMMENT_NODE = NodeType.COMMENT_NODE = 8;
var DOCUMENT_NODE = NodeType.DOCUMENT_NODE = 9;
var DOCUMENT_TYPE_NODE = NodeType.DOCUMENT_TYPE_NODE = 10;
var DOCUMENT_FRAGMENT_NODE = NodeType.DOCUMENT_FRAGMENT_NODE = 11;
var NOTATION_NODE = NodeType.NOTATION_NODE = 12;
// ExceptionCode
var ExceptionCode = {};
var ExceptionMessage = {};
ExceptionCode.INDEX_SIZE_ERR = (ExceptionMessage[1] = "Index size error", 1);
ExceptionCode.DOMSTRING_SIZE_ERR = (ExceptionMessage[2] = "DOMString size error", 2);
var HIERARCHY_REQUEST_ERR = ExceptionCode.HIERARCHY_REQUEST_ERR = (ExceptionMessage[3] = "Hierarchy request error", 3);
ExceptionCode.WRONG_DOCUMENT_ERR = (ExceptionMessage[4] = "Wrong document", 4);
ExceptionCode.INVALID_CHARACTER_ERR = (ExceptionMessage[5] = "Invalid character", 5);
ExceptionCode.NO_DATA_ALLOWED_ERR = (ExceptionMessage[6] = "No data allowed", 6);
ExceptionCode.NO_MODIFICATION_ALLOWED_ERR = (ExceptionMessage[7] = "No modification allowed", 7);
var NOT_FOUND_ERR = ExceptionCode.NOT_FOUND_ERR = (ExceptionMessage[8] = "Not found", 8);
ExceptionCode.NOT_SUPPORTED_ERR = (ExceptionMessage[9] = "Not supported", 9);
var INUSE_ATTRIBUTE_ERR = ExceptionCode.INUSE_ATTRIBUTE_ERR = (ExceptionMessage[10] = "Attribute in use", 10);
//level2
ExceptionCode.INVALID_STATE_ERR = (ExceptionMessage[11] = "Invalid state", 11);
ExceptionCode.SYNTAX_ERR = (ExceptionMessage[12] = "Syntax error", 12);
ExceptionCode.INVALID_MODIFICATION_ERR = (ExceptionMessage[13] = "Invalid modification", 13);
ExceptionCode.NAMESPACE_ERR = (ExceptionMessage[14] = "Invalid namespace", 14);
ExceptionCode.INVALID_ACCESS_ERR = (ExceptionMessage[15] = "Invalid access", 15);
/**
* DOM Level 2
* Object DOMException
* @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/ecma-script-binding.html
* @see http://www.w3.org/TR/REC-DOM-Level-1/ecma-script-language-binding.html
*/
function DOMException(code, message) {
if (message instanceof Error) {
var error = message;
} else {
error = this;
Error.call(this, ExceptionMessage[code]);
this.message = ExceptionMessage[code];
if (Error.captureStackTrace) Error.captureStackTrace(this, DOMException);
}
error.code = code;
if (message) this.message = this.message + ": " + message;
return error;
}
DOMException.prototype = Error.prototype;
copy(ExceptionCode, DOMException);
/**
* @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-536297177
* The NodeList interface provides the abstraction of an ordered collection of nodes, without defining or constraining how this collection is implemented. NodeList objects in the DOM are live.
* The items in the NodeList are accessible via an integral index, starting from 0.
*/
function NodeList() {}
NodeList.prototype = {
/**
* The number of nodes in the list. The range of valid child node indices is 0 to length-1 inclusive.
* @standard level1
*/
length: 0,
/**
* Returns the indexth item in the collection. If index is greater than or equal to the number of nodes in the list, this returns null.
* @standard level1
* @param index unsigned long
* Index into the collection.
* @return Node
* The node at the indexth position in the NodeList, or null if that is not a valid index.
*/
item: function (index) {
return index >= 0 && index < this.length ? this[index] : null;
},
toString: function (isHTML, nodeFilter) {
for (var buf = [], i = 0; i < this.length; i++) {
serializeToString(this[i], buf, isHTML, nodeFilter);
}
return buf.join('');
},
/**
* @private
* @param {function (Node):boolean} predicate
* @returns {Node[]}
*/
filter: function (predicate) {
return Array.prototype.filter.call(this, predicate);
},
/**
* @private
* @param {Node} item
* @returns {number}
*/
indexOf: function (item) {
return Array.prototype.indexOf.call(this, item);
}
};
function LiveNodeList(node, refresh) {
this._node = node;
this._refresh = refresh;
_updateLiveList(this);
}
function _updateLiveList(list) {
var inc = list._node._inc || list._node.ownerDocument._inc;
if (list._inc !== inc) {
var ls = list._refresh(list._node);
__set__(list, 'length', ls.length);
if (!list.$$length || ls.length < list.$$length) {
for (var i = ls.length; i in list; i++) {
if (Object.prototype.hasOwnProperty.call(list, i)) {
delete list[i];
}
}
}
copy(ls, list);
list._inc = inc;
}
}
LiveNodeList.prototype.item = function (i) {
_updateLiveList(this);
return this[i] || null;
};
_extends(LiveNodeList, NodeList);
/**
* Objects implementing the NamedNodeMap interface are used
* to represent collections of nodes that can be accessed by name.
* Note that NamedNodeMap does not inherit from NodeList;
* NamedNodeMaps are not maintained in any particular order.
* Objects contained in an object implementing NamedNodeMap may also be accessed by an ordinal index,
* but this is simply to allow convenient enumeration of the contents of a NamedNodeMap,
* and does not imply that the DOM specifies an order to these Nodes.
* NamedNodeMap objects in the DOM are live.
* used for attributes or DocumentType entities
*/
function NamedNodeMap() {}
function _findNodeIndex(list, node) {
var i = list.length;
while (i--) {
if (list[i] === node) {
return i;
}
}
}
function _addNamedNode(el, list, newAttr, oldAttr) {
if (oldAttr) {
list[_findNodeIndex(list, oldAttr)] = newAttr;
} else {
list[list.length++] = newAttr;
}
if (el) {
newAttr.ownerElement = el;
var doc = el.ownerDocument;
if (doc) {
oldAttr && _onRemoveAttribute(doc, el, oldAttr);
_onAddAttribute(doc, el, newAttr);
}
}
}
function _removeNamedNode(el, list, attr) {
//console.log('remove attr:'+attr)
var i = _findNodeIndex(list, attr);
if (i >= 0) {
var lastIndex = list.length - 1;
while (i < lastIndex) {
list[i] = list[++i];
}
list.length = lastIndex;
if (el) {
var doc = el.ownerDocument;
if (doc) {
_onRemoveAttribute(doc, el, attr);
attr.ownerElement = null;
}
}
} else {
throw new DOMException(NOT_FOUND_ERR, new Error(el.tagName + '@' + attr));
}
}
NamedNodeMap.prototype = {
length: 0,
item: NodeList.prototype.item,
getNamedItem: function (key) {
// if(key.indexOf(':')>0 || key == 'xmlns'){
// return null;
// }
//console.log()
var i = this.length;
while (i--) {
var attr = this[i];
//console.log(attr.nodeName,key)
if (attr.nodeName == key) {
return attr;
}
}
},
setNamedItem: function (attr) {
var el = attr.ownerElement;
if (el && el != this._ownerElement) {
throw new DOMException(INUSE_ATTRIBUTE_ERR);
}
var oldAttr = this.getNamedItem(attr.nodeName);
_addNamedNode(this._ownerElement, this, attr, oldAttr);
return oldAttr;
},
/* returns Node */
setNamedItemNS: function (attr) {
// raises: WRONG_DOCUMENT_ERR,NO_MODIFICATION_ALLOWED_ERR,INUSE_ATTRIBUTE_ERR
var el = attr.ownerElement,
oldAttr;
if (el && el != this._ownerElement) {
throw new DOMException(INUSE_ATTRIBUTE_ERR);
}
oldAttr = this.getNamedItemNS(attr.namespaceURI, attr.localName);
_addNamedNode(this._ownerElement, this, attr, oldAttr);
return oldAttr;
},
/* returns Node */
removeNamedItem: function (key) {
var attr = this.getNamedItem(key);
_removeNamedNode(this._ownerElement, this, attr);
return attr;
},
// raises: NOT_FOUND_ERR,NO_MODIFICATION_ALLOWED_ERR
//for level2
removeNamedItemNS: function (namespaceURI, localName) {
var attr = this.getNamedItemNS(namespaceURI, localName);
_removeNamedNode(this._ownerElement, this, attr);
return attr;
},
getNamedItemNS: function (namespaceURI, localName) {
var i = this.length;
while (i--) {
var node = this[i];
if (node.localName == localName && node.namespaceURI == namespaceURI) {
return node;
}
}
return null;
}
};
/**
* The DOMImplementation interface represents an object providing methods
* which are not dependent on any particular document.
* Such an object is returned by the `Document.implementation` property.
*
* __The individual methods describe the differences compared to the specs.__
*
* @constructor
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation MDN
* @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-102161490 DOM Level 1 Core (Initial)
* @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#ID-102161490 DOM Level 2 Core
* @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#ID-102161490 DOM Level 3 Core
* @see https://dom.spec.whatwg.org/#domimplementation DOM Living Standard
*/
function DOMImplementation$1() {}
DOMImplementation$1.prototype = {
/**
* The DOMImplementation.hasFeature() method returns a Boolean flag indicating if a given feature is supported.
* The different implementations fairly diverged in what kind of features were reported.
* The latest version of the spec settled to force this method to always return true, where the functionality was accurate and in use.
*
* @deprecated It is deprecated and modern browsers return true in all cases.
*
* @param {string} feature
* @param {string} [version]
* @returns {boolean} always true
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/hasFeature MDN
* @see https://www.w3.org/TR/REC-DOM-Level-1/level-one-core.html#ID-5CED94D7 DOM Level 1 Core
* @see https://dom.spec.whatwg.org/#dom-domimplementation-hasfeature DOM Living Standard
*/
hasFeature: function (feature, version) {
return true;
},
/**
* Creates an XML Document object of the specified type with its document element.
*
* __It behaves slightly different from the description in the living standard__:
* - There is no interface/class `XMLDocument`, it returns a `Document` instance.
* - `contentType`, `encoding`, `mode`, `origin`, `url` fields are currently not declared.
* - this implementation is not validating names or qualified names
* (when parsing XML strings, the SAX parser takes care of that)
*
* @param {string|null} namespaceURI
* @param {string} qualifiedName
* @param {DocumentType=null} doctype
* @returns {Document}
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocument MDN
* @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocument DOM Level 2 Core (initial)
* @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocument DOM Level 2 Core
*
* @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
* @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
* @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
*/
createDocument: function (namespaceURI, qualifiedName, doctype) {
var doc = new Document();
doc.implementation = this;
doc.childNodes = new NodeList();
doc.doctype = doctype || null;
if (doctype) {
doc.appendChild(doctype);
}
if (qualifiedName) {
var root = doc.createElementNS(namespaceURI, qualifiedName);
doc.appendChild(root);
}
return doc;
},
/**
* Returns a doctype, with the given `qualifiedName`, `publicId`, and `systemId`.
*
* __This behavior is slightly different from the in the specs__:
* - this implementation is not validating names or qualified names
* (when parsing XML strings, the SAX parser takes care of that)
*
* @param {string} qualifiedName
* @param {string} [publicId]
* @param {string} [systemId]
* @returns {DocumentType} which can either be used with `DOMImplementation.createDocument` upon document creation
* or can be put into the document via methods like `Node.insertBefore()` or `Node.replaceChild()`
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/DOMImplementation/createDocumentType MDN
* @see https://www.w3.org/TR/DOM-Level-2-Core/core.html#Level-2-Core-DOM-createDocType DOM Level 2 Core
* @see https://dom.spec.whatwg.org/#dom-domimplementation-createdocumenttype DOM Living Standard
*
* @see https://dom.spec.whatwg.org/#validate-and-extract DOM: Validate and extract
* @see https://www.w3.org/TR/xml/#NT-NameStartChar XML Spec: Names
* @see https://www.w3.org/TR/xml-names/#ns-qualnames XML Namespaces: Qualified names
*/
createDocumentType: function (qualifiedName, publicId, systemId) {
var node = new DocumentType();
node.name = qualifiedName;
node.nodeName = qualifiedName;
node.publicId = publicId || '';
node.systemId = systemId || '';
return node;
}
};
/**
* @see http://www.w3.org/TR/2000/REC-DOM-Level-2-Core-20001113/core.html#ID-1950641247
*/
function Node() {}
Node.prototype = {
firstChild: null,
lastChild: null,
previousSibling: null,
nextSibling: null,
attributes: null,
parentNode: null,
childNodes: null,
ownerDocument: null,
nodeValue: null,
namespaceURI: null,
prefix: null,
localName: null,
// Modified in DOM Level 2:
insertBefore: function (newChild, refChild) {
//raises
return _insertBefore(this, newChild, refChild);
},
replaceChild: function (newChild, oldChild) {
//raises
_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
if (oldChild) {
this.removeChild(oldChild);
}
},
removeChild: function (oldChild) {
return _removeChild(this, oldChild);
},
appendChild: function (newChild) {
return this.insertBefore(newChild, null);
},
hasChildNodes: function () {
return this.firstChild != null;
},
cloneNode: function (deep) {
return cloneNode(this.ownerDocument || this, this, deep);
},
// Modified in DOM Level 2:
normalize: function () {
var child = this.firstChild;
while (child) {
var next = child.nextSibling;
if (next && next.nodeType == TEXT_NODE && child.nodeType == TEXT_NODE) {
this.removeChild(next);
child.appendData(next.data);
} else {
child.normalize();
child = next;
}
}
},
// Introduced in DOM Level 2:
isSupported: function (feature, version) {
return this.ownerDocument.implementation.hasFeature(feature, version);
},
// Introduced in DOM Level 2:
hasAttributes: function () {
return this.attributes.length > 0;
},
/**
* Look up the prefix associated to the given namespace URI, starting from this node.
* **The default namespace declarations are ignored by this method.**
* See Namespace Prefix Lookup for details on the algorithm used by this method.
*
* _Note: The implementation seems to be incomplete when compared to the algorithm described in the specs._
*
* @param {string | null} namespaceURI
* @returns {string | null}
* @see https://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-lookupNamespacePrefix
* @see https://www.w3.org/TR/DOM-Level-3-Core/namespaces-algorithms.html#lookupNamespacePrefixAlgo
* @see https://dom.spec.whatwg.org/#dom-node-lookupprefix
* @see https://github.com/xmldom/xmldom/issues/322
*/
lookupPrefix: function (namespaceURI) {
var el = this;
while (el) {
var map = el._nsMap;
//console.dir(map)
if (map) {
for (var n in map) {
if (Object.prototype.hasOwnProperty.call(map, n) && map[n] === namespaceURI) {
return n;
}
}
}
el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
}
return null;
},
// Introduced in DOM Level 3:
lookupNamespaceURI: function (prefix) {
var el = this;
while (el) {
var map = el._nsMap;
//console.dir(map)
if (map) {
if (Object.prototype.hasOwnProperty.call(map, prefix)) {
return map[prefix];
}
}
el = el.nodeType == ATTRIBUTE_NODE ? el.ownerDocument : el.parentNode;
}
return null;
},
// Introduced in DOM Level 3:
isDefaultNamespace: function (namespaceURI) {
var prefix = this.lookupPrefix(namespaceURI);
return prefix == null;
}
};
function _xmlEncoder(c) {
return c == '<' && '<' || c == '>' && '>' || c == '&' && '&' || c == '"' && '"' || '&#' + c.charCodeAt() + ';';
}
copy(NodeType, Node);
copy(NodeType, Node.prototype);
/**
* @param callback return true for continue,false for break
* @return boolean true: break visit;
*/
function _visitNode(node, callback) {
if (callback(node)) {
return true;
}
if (node = node.firstChild) {
do {
if (_visitNode(node, callback)) {
return true;
}
} while (node = node.nextSibling);
}
}
function Document() {
this.ownerDocument = this;
}
function _onAddAttribute(doc, el, newAttr) {
doc && doc._inc++;
var ns = newAttr.namespaceURI;
if (ns === NAMESPACE$2.XMLNS) {
//update namespace
el._nsMap[newAttr.prefix ? newAttr.localName : ''] = newAttr.value;
}
}
function _onRemoveAttribute(doc, el, newAttr, remove) {
doc && doc._inc++;
var ns = newAttr.namespaceURI;
if (ns === NAMESPACE$2.XMLNS) {
//update namespace
delete el._nsMap[newAttr.prefix ? newAttr.localName : ''];
}
}
/**
* Updates `el.childNodes`, updating the indexed items and it's `length`.
* Passing `newChild` means it will be appended.
* Otherwise it's assumed that an item has been removed,
* and `el.firstNode` and it's `.nextSibling` are used
* to walk the current list of child nodes.
*
* @param {Document} doc
* @param {Node} el
* @param {Node} [newChild]
* @private
*/
function _onUpdateChild(doc, el, newChild) {
if (doc && doc._inc) {
doc._inc++;
//update childNodes
var cs = el.childNodes;
if (newChild) {
cs[cs.length++] = newChild;
} else {
var child = el.firstChild;
var i = 0;
while (child) {
cs[i++] = child;
child = child.nextSibling;
}
cs.length = i;
delete cs[cs.length];
}
}
}
/**
* Removes the connections between `parentNode` and `child`
* and any existing `child.previousSibling` or `child.nextSibling`.
*
* @see https://github.com/xmldom/xmldom/issues/135
* @see https://github.com/xmldom/xmldom/issues/145
*
* @param {Node} parentNode
* @param {Node} child
* @returns {Node} the child that was removed.
* @private
*/
function _removeChild(parentNode, child) {
var previous = child.previousSibling;
var next = child.nextSibling;
if (previous) {
previous.nextSibling = next;
} else {
parentNode.firstChild = next;
}
if (next) {
next.previousSibling = previous;
} else {
parentNode.lastChild = previous;
}
child.parentNode = null;
child.previousSibling = null;
child.nextSibling = null;
_onUpdateChild(parentNode.ownerDocument, parentNode);
return child;
}
/**
* Returns `true` if `node` can be a parent for insertion.
* @param {Node} node
* @returns {boolean}
*/
function hasValidParentNodeType(node) {
return node && (node.nodeType === Node.DOCUMENT_NODE || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.ELEMENT_NODE);
}
/**
* Returns `true` if `node` can be inserted according to it's `nodeType`.
* @param {Node} node
* @returns {boolean}
*/
function hasInsertableNodeType(node) {
return node && (isElementNode(node) || isTextNode(node) || isDocTypeNode(node) || node.nodeType === Node.DOCUMENT_FRAGMENT_NODE || node.nodeType === Node.COMMENT_NODE || node.nodeType === Node.PROCESSING_INSTRUCTION_NODE);
}
/**
* Returns true if `node` is a DOCTYPE node
* @param {Node} node
* @returns {boolean}
*/
function isDocTypeNode(node) {
return node && node.nodeType === Node.DOCUMENT_TYPE_NODE;
}
/**
* Returns true if the node is an element
* @param {Node} node
* @returns {boolean}
*/
function isElementNode(node) {
return node && node.nodeType === Node.ELEMENT_NODE;
}
/**
* Returns true if `node` is a text node
* @param {Node} node
* @returns {boolean}
*/
function isTextNode(node) {
return node && node.nodeType === Node.TEXT_NODE;
}
/**
* Check if en element node can be inserted before `child`, or at the end if child is falsy,
* according to the presence and position of a doctype node on the same level.
*
* @param {Document} doc The document node
* @param {Node} child the node that would become the nextSibling if the element would be inserted
* @returns {boolean} `true` if an element can be inserted before child
* @private
* https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
*/
function isElementInsertionPossible(doc, child) {
var parentChildNodes = doc.childNodes || [];
if (find(parentChildNodes, isElementNode) || isDocTypeNode(child)) {
return false;
}
var docTypeNode = find(parentChildNodes, isDocTypeNode);
return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
}
/**
* Check if en element node can be inserted before `child`, or at the end if child is falsy,
* according to the presence and position of a doctype node on the same level.
*
* @param {Node} doc The document node
* @param {Node} child the node that would become the nextSibling if the element would be inserted
* @returns {boolean} `true` if an element can be inserted before child
* @private
* https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
*/
function isElementReplacementPossible(doc, child) {
var parentChildNodes = doc.childNodes || [];
function hasElementChildThatIsNotChild(node) {
return isElementNode(node) && node !== child;
}
if (find(parentChildNodes, hasElementChildThatIsNotChild)) {
return false;
}
var docTypeNode = find(parentChildNodes, isDocTypeNode);
return !(child && docTypeNode && parentChildNodes.indexOf(docTypeNode) > parentChildNodes.indexOf(child));
}
/**
* @private
* Steps 1-5 of the checks before inserting and before replacing a child are the same.
*
* @param {Node} parent the parent node to insert `node` into
* @param {Node} node the node to insert
* @param {Node=} child the node that should become the `nextSibling` of `node`
* @returns {Node}
* @throws DOMException for several node combinations that would create a DOM that is not well-formed.
* @throws DOMException if `child` is provided but is not a child of `parent`.
* @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
* @see https://dom.spec.whatwg.org/#concept-node-replace
*/
function assertPreInsertionValidity1to5(parent, node, child) {
// 1. If `parent` is not a Document, DocumentFragment, or Element node, then throw a "HierarchyRequestError" DOMException.
if (!hasValidParentNodeType(parent)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected parent node type ' + parent.nodeType);
}
// 2. If `node` is a host-including inclusive ancestor of `parent`, then throw a "HierarchyRequestError" DOMException.
// not implemented!
// 3. If `child` is non-null and its parent is not `parent`, then throw a "NotFoundError" DOMException.
if (child && child.parentNode !== parent) {
throw new DOMException(NOT_FOUND_ERR, 'child not in parent');
}
if (
// 4. If `node` is not a DocumentFragment, DocumentType, Element, or CharacterData node, then throw a "HierarchyRequestError" DOMException.
!hasInsertableNodeType(node) ||
// 5. If either `node` is a Text node and `parent` is a document,
// the sax parser currently adds top level text nodes, this will be fixed in 0.9.0
// || (node.nodeType === Node.TEXT_NODE && parent.nodeType === Node.DOCUMENT_NODE)
// or `node` is a doctype and `parent` is not a document, then throw a "HierarchyRequestError" DOMException.
isDocTypeNode(node) && parent.nodeType !== Node.DOCUMENT_NODE) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Unexpected node type ' + node.nodeType + ' for parent node type ' + parent.nodeType);
}
}
/**
* @private
* Step 6 of the checks before inserting and before replacing a child are different.
*
* @param {Document} parent the parent node to insert `node` into
* @param {Node} node the node to insert
* @param {Node | undefined} child the node that should become the `nextSibling` of `node`
* @returns {Node}
* @throws DOMException for several node combinations that would create a DOM that is not well-formed.
* @throws DOMException if `child` is provided but is not a child of `parent`.
* @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
* @see https://dom.spec.whatwg.org/#concept-node-replace
*/
function assertPreInsertionValidityInDocument(parent, node, child) {
var parentChildNodes = parent.childNodes || [];
var nodeChildNodes = node.childNodes || [];
// DocumentFragment
if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
var nodeChildElements = nodeChildNodes.filter(isElementNode);
// If node has more than one element child or has a Text node child.
if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
}
// Otherwise, if `node` has one element child and either `parent` has an element child,
// `child` is a doctype, or `child` is non-null and a doctype is following `child`.
if (nodeChildElements.length === 1 && !isElementInsertionPossible(parent, child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
}
}
// Element
if (isElementNode(node)) {
// `parent` has an element child, `child` is a doctype,
// or `child` is non-null and a doctype is following `child`.
if (!isElementInsertionPossible(parent, child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
}
}
// DocumentType
if (isDocTypeNode(node)) {
// `parent` has a doctype child,
if (find(parentChildNodes, isDocTypeNode)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
}
var parentElementChild = find(parentChildNodes, isElementNode);
// `child` is non-null and an element is preceding `child`,
if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
}
// or `child` is null and `parent` has an element child.
if (!child && parentElementChild) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can not be appended since element is present');
}
}
}
/**
* @private
* Step 6 of the checks before inserting and before replacing a child are different.
*
* @param {Document} parent the parent node to insert `node` into
* @param {Node} node the node to insert
* @param {Node | undefined} child the node that should become the `nextSibling` of `node`
* @returns {Node}
* @throws DOMException for several node combinations that would create a DOM that is not well-formed.
* @throws DOMException if `child` is provided but is not a child of `parent`.
* @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
* @see https://dom.spec.whatwg.org/#concept-node-replace
*/
function assertPreReplacementValidityInDocument(parent, node, child) {
var parentChildNodes = parent.childNodes || [];
var nodeChildNodes = node.childNodes || [];
// DocumentFragment
if (node.nodeType === Node.DOCUMENT_FRAGMENT_NODE) {
var nodeChildElements = nodeChildNodes.filter(isElementNode);
// If `node` has more than one element child or has a Text node child.
if (nodeChildElements.length > 1 || find(nodeChildNodes, isTextNode)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'More than one element or text in fragment');
}
// Otherwise, if `node` has one element child and either `parent` has an element child that is not `child` or a doctype is following `child`.
if (nodeChildElements.length === 1 && !isElementReplacementPossible(parent, child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Element in fragment can not be inserted before doctype');
}
}
// Element
if (isElementNode(node)) {
// `parent` has an element child that is not `child` or a doctype is following `child`.
if (!isElementReplacementPossible(parent, child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one element can be added and only after doctype');
}
}
// DocumentType
if (isDocTypeNode(node)) {
function hasDoctypeChildThatIsNotChild(node) {
return isDocTypeNode(node) && node !== child;
}
// `parent` has a doctype child that is not `child`,
if (find(parentChildNodes, hasDoctypeChildThatIsNotChild)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Only one doctype is allowed');
}
var parentElementChild = find(parentChildNodes, isElementNode);
// or an element is preceding `child`.
if (child && parentChildNodes.indexOf(parentElementChild) < parentChildNodes.indexOf(child)) {
throw new DOMException(HIERARCHY_REQUEST_ERR, 'Doctype can only be inserted before an element');
}
}
}
/**
* @private
* @param {Node} parent the parent node to insert `node` into
* @param {Node} node the node to insert
* @param {Node=} child the node that should become the `nextSibling` of `node`
* @returns {Node}
* @throws DOMException for several node combinations that would create a DOM that is not well-formed.
* @throws DOMException if `child` is provided but is not a child of `parent`.
* @see https://dom.spec.whatwg.org/#concept-node-ensure-pre-insertion-validity
*/
function _insertBefore(parent, node, child, _inDocumentAssertion) {
// To ensure pre-insertion validity of a node into a parent before a child, run these steps:
assertPreInsertionValidity1to5(parent, node, child);
// If parent is a document, and any of the statements below, switched on the interface node implements,
// are true, then throw a "HierarchyRequestError" DOMException.
if (parent.nodeType === Node.DOCUMENT_NODE) {
(_inDocumentAssertion || assertPreInsertionValidityInDocument)(parent, node, child);
}
var cp = node.parentNode;
if (cp) {
cp.removeChild(node); //remove and update
}
if (node.nodeType === DOCUMENT_FRAGMENT_NODE) {
var newFirst = node.firstChild;
if (newFirst == null) {
return node;
}
var newLast = node.lastChild;
} else {
newFirst = newLast = node;
}
var pre = child ? child.previousSibling : parent.lastChild;
newFirst.previousSibling = pre;
newLast.nextSibling = child;
if (pre) {
pre.nextSibling = newFirst;
} else {
parent.firstChild = newFirst;
}
if (child == null) {
parent.lastChild = newLast;
} else {
child.previousSibling = newLast;
}
do {
newFirst.parentNode = parent;
} while (newFirst !== newLast && (newFirst = newFirst.nextSibling));
_onUpdateChild(parent.ownerDocument || parent, parent);
//console.log(parent.lastChild.nextSibling == null)
if (node.nodeType == DOCUMENT_FRAGMENT_NODE) {
node.firstChild = node.lastChild = null;
}
return node;
}
/**
* Appends `newChild` to `parentNode`.
* If `newChild` is already connected to a `parentNode` it is first removed from it.
*
* @see https://github.com/xmldom/xmldom/issues/135
* @see https://github.com/xmldom/xmldom/issues/145
* @param {Node} parentNode
* @param {Node} newChild
* @returns {Node}
* @private
*/
function _appendSingleChild(parentNode, newChild) {
if (newChild.parentNode) {
newChild.parentNode.removeChild(newChild);
}
newChild.parentNode = parentNode;
newChild.previousSibling = parentNode.lastChild;
newChild.nextSibling = null;
if (newChild.previousSibling) {
newChild.previousSibling.nextSibling = newChild;
} else {
parentNode.firstChild = newChild;
}
parentNode.lastChild = newChild;
_onUpdateChild(parentNode.ownerDocument, parentNode, newChild);
return newChild;
}
Document.prototype = {
//implementation : null,
nodeName: '#document',
nodeType: DOCUMENT_NODE,
/**
* The DocumentType node of the document.
*
* @readonly
* @type DocumentType
*/
doctype: null,
documentElement: null,
_inc: 1,
insertBefore: function (newChild, refChild) {
//raises
if (newChild.nodeType == DOCUMENT_FRAGMENT_NODE) {
var child = newChild.firstChild;
while (child) {
var next = child.nextSibling;
this.insertBefore(child, refChild);
child = next;
}
return newChild;
}
_insertBefore(this, newChild, refChild);
newChild.ownerDocument = this;
if (this.documentElement === null && newChild.nodeType === ELEMENT_NODE) {
this.documentElement = newChild;
}
return newChild;
},
removeChild: function (oldChild) {
if (this.documentElement == oldChild) {
this.documentElement = null;
}
return _removeChild(this, oldChild);
},
replaceChild: function (newChild, oldChild) {
//raises
_insertBefore(this, newChild, oldChild, assertPreReplacementValidityInDocument);
newChild.ownerDocument = this;
if (oldChild) {
this.removeChild(oldChild);
}
if (isElementNode(newChild)) {
this.documentElement = newChild;
}
},
// Introduced in DOM Level 2:
importNode: function (importedNode, deep) {
return importNode(this, importedNode, deep);
},
// Introduced in DOM Level 2:
getElementById: function (id) {
var rtv = null;
_visitNode(this.documentElement, function (node) {
if (node.nodeType == ELEMENT_NODE) {
if (node.getAttribute('id') == id) {
rtv = node;
return true;
}
}
});
return rtv;
},
/**
* The `getElementsByClassName` method of `Document` interface returns an array-like object
* of all child elements which have **all** of the given class name(s).
*
* Returns an empty list if `classeNames` is an empty string or only contains HTML white space characters.
*
*
* Warning: This is a live LiveNodeList.
* Changes in the DOM will reflect in the array as the changes occur.
* If an element selected by this array no longer qualifies for the selector,
* it will automatically be removed. Be aware of this for iteration purposes.
*
* @param {string} classNames is a string representing the class name(s) to match; multiple class names are separated by (ASCII-)whitespace
*
* @see https://developer.mozilla.org/en-US/docs/Web/API/Document/getElementsByClassName
* @see https://dom.spec.whatwg.org/#concept-getelementsbyclassname
*/
getElementsByClassName: function (classNames) {
var classNamesSet = toOrderedSet(classNames);
return new LiveNodeList(this, function (base) {
var ls = [];
if (classNamesSet.length > 0) {
_visitNode(base.documentElement, function (node) {
if (node !== base && node.nodeType === ELEMENT_NODE) {
var nodeClassNames = node.getAttribute('class');
// can be null if the attribute does not exist
if (nodeClassNames) {
// before splitting and iterating just compare them for the most common case
var matches = classNames === nodeClassNames;
if (!matches) {
var nodeClassNamesSet = toOrderedSet(nodeClassNames);
matches = classNamesSet.every(arrayIncludes(nodeClassNamesSet));
}
if (matches) {
ls.push(node);
}
}
}
});
}
return ls;
});
},
//document factory method:
createElement: function (tagName) {
var node = new Element();
node.ownerDocument = this;
node.nodeName = tagName;
node.tagName = tagName;
node.localName = tagName;
node.childNodes = new NodeList();
var attrs = node.attributes = new NamedNodeMap();
attrs._ownerElement = node;
return node;
},
createDocumentFragment: function () {
var node = new DocumentFragment();
node.ownerDocument = this;
node.childNodes = new NodeList();
return node;
},
createTextNode: function (data) {
var node = new Text();
node.ownerDocument = this;
node.appendData(data);
return node;
},
createComment: function (data) {
var node = new Comment();
node.ownerDocument = this;
node.appendData(data);
return node;
},
createCDATASection: function (data) {
var node = new CDATASection();
node.ownerDocument = this;
node.appendData(data);
return node;
},
createProcessingInstruction: function (target, data) {
var node = new ProcessingInstruction();
node.ownerDocument = this;
node.tagName = node.nodeName = node.target = target;
node.nodeValue = node.data = data;
return node;
},
createAttribute: function (name) {
var node = new Attr();
node.ownerDocument = this;
node.name = name;
node.nodeName = name;
node.localName = name;
node.specified = true;
return node;
},
createEntityReference: function (name) {
var node = new EntityReference();
node.ownerDocument = this;
node.nodeName = name;
return node;
},
// Introduced in DOM Level 2:
createElementNS: function (namespaceURI, qualifiedName) {
var node = new Element();
var pl = qualifiedName.split(':');
var attrs = node.attributes = new NamedNodeMap();
node.childNodes = new NodeList();
node.ownerDocument = this;
node.nodeName = qualifiedName;
node.tagName = qualifiedName;
node.namespaceURI = namespaceURI;
if (pl.length == 2) {
node.prefix = pl[0];
node.localName = pl[1];
} else {
//el.prefix = null;
node.localName = qualifiedName;
}
attrs._ownerElement = node;
return node;
},
// Introduced in DOM Level 2:
createAttributeNS: function (namespaceURI, qualifiedName) {
var node = new Attr();
var pl = qualifiedName.split(':');
node.ownerDocument = this;
node.nodeName = qualifiedName;
node.name = qualifiedName;
node.namespaceURI = namespaceURI;
node.specified = true;
if (pl.length == 2) {
node.prefix = pl[0];
node.localName = pl[1];
} else {
//el.prefix = null;
node.localName = qualifiedName;
}
return node;
}
};
_extends(Document, Node);
function Element() {
this._nsMap = {};
}
Element.prototype = {
nodeType: ELEMENT_NODE,
hasAttribute: function (name) {
return this.getAttributeNode(name) != null;
},
getAttribute: function (name) {
var attr = this.getAttributeNode(name);
return attr && attr.value || '';
},
getAttributeNode: function (name) {
return this.attributes.getNamedItem(name);
},
setAttribute: function (name, value) {
var attr = this.ownerDocument.createAttribute(name);
attr.value = attr.nodeValue = "" + value;
this.setAttributeNode(attr);
},
removeAttribute: function (name) {
var attr = this.getAttributeNode(name);
attr && this.removeAttributeNode(attr);
},
//four real opeartion method
appendChild: function (newChild) {
if (newChild.nodeType === DOCUMENT_FRAGMENT_NODE) {
return this.insertBefore(newChild, null);
} else {
return _appendSingleChild(this, newChild);
}
},
setAttributeNode: function (newAttr) {
return this.attributes.setNamedItem(newAttr);
},
setAttributeNodeNS: function (newAttr) {
return this.attributes.setNamedItemNS(newAttr);
},
removeAttributeNode: function (oldAttr) {
//console.log(this == oldAttr.ownerElement)
return this.attributes.removeNamedItem(oldAttr.nodeName);
},
//get real attribute name,and remove it by removeAttributeNode
removeAttributeNS: function (namespaceURI, localName) {
var old = this.getAttributeNodeNS(namespaceURI, localName);
old && this.removeAttributeNode(old);
},
hasAttributeNS: function (namespaceURI, localName) {
return this.getAttributeNodeNS(namespaceURI, localName) != null;
},
getAttributeNS: function (namespaceURI, localName) {
var attr = this.getAttributeNodeNS(namespaceURI, localName);
return attr && attr.value || '';
},
setAttributeNS: function (namespaceURI, qualifiedName, value) {
var attr = this.ownerDocument.createAttributeNS(namespaceURI, qualifiedName);
attr.value = attr.nodeValue = "" + value;
this.setAttributeNode(attr);
},
getAttributeNodeNS: function (namespaceURI, localName) {
return this.attributes.getNamedItemNS(namespaceURI, localName);
},
getElementsByTagName: function (tagName) {
return new LiveNodeList(this, function (base) {
var ls = [];
_visitNode(base, function (node) {
if (node !== base && node.nodeType == ELEMENT_NODE && (tagName === '*' || node.tagName == tagName)) {
ls.push(node);
}
});
return ls;
});
},
getElementsByTagNameNS: function (namespaceURI, localName) {
return new LiveNodeList(this, function (base) {
var ls = [];
_visitNode(base, function (node) {
if (node !== base && node.nodeType === ELEMENT_NODE && (namespaceURI === '*' || node.namespaceURI === namespaceURI) && (localName === '*' || node.localName == localName)) {
ls.push(node);
}
});
return ls;
});
}
};
Document.prototype.getElementsByTagName = Element.prototype.getElementsByTagName;
Document.prototype.getElementsByTagNameNS = Element.prototype.getElementsByTagNameNS;
_extends(Element, Node);
function Attr() {}
Attr.prototype.nodeType = ATTRIBUTE_NODE;
_extends(Attr, Node);
function CharacterData() {}
CharacterData.prototype = {
data: '',
substringData: function (offset, count) {
return this.data.substring(offset, offset + count);
},
appendData: function (text) {
text = this.data + text;
this.nodeValue = this.data = text;
this.length = text.length;
},
insertData: function (offset, text) {
this.replaceData(offset, 0, text);
},
appendChild: function (newChild) {
throw new Error(ExceptionMessage[HIERARCHY_REQUEST_ERR]);
},
deleteData: function (offset, count) {
this.replaceData(offset, count, "");
},
replaceData: function (offset, count, text) {
var start = this.data.substring(0, offset);
var end = this.data.substring(offset + count);
text = start + text + end;
this.nodeValue = this.data = text;
this.length = text.length;
}
};
_extends(CharacterData, Node);
function Text() {}
Text.prototype = {
nodeName: "#text",
nodeType: TEXT_NODE,
splitText: function (offset) {
var text = this.data;
var newText = text.substring(offset);
text = text.substring(0, offset);
this.data = this.nodeValue = text;
this.length = text.length;
var newNode = this.ownerDocument.createTextNode(newText);
if (this.parentNode) {
this.parentNode.insertBefore(newNode, this.nextSibling);
}
return newNode;
}
};
_extends(Text, CharacterData);
function Comment() {}
Comment.prototype = {
nodeName: "#comment",
nodeType: COMMENT_NODE
};
_extends(Comment, CharacterData);
function CDATASection() {}
CDATASection.prototype = {
nodeName: "#cdata-section",
nodeType: CDATA_SECTION_NODE
};
_extends(CDATASection, CharacterData);
function DocumentType() {}
DocumentType.prototype.nodeType = DOCUMENT_TYPE_NODE;
_extends(DocumentType, Node);
function Notation() {}
Notation.prototype.nodeType = NOTATION_NODE;
_extends(Notation, Node);
function Entity() {}
Entity.prototype.nodeType = ENTITY_NODE;
_extends(Entity, Node);
function EntityReference() {}
EntityReference.prototype.nodeType = ENTITY_REFERENCE_NODE;
_extends(EntityReference, Node);
function DocumentFragment() {}
DocumentFragment.prototype.nodeName = "#document-fragment";
DocumentFragment.prototype.nodeType = DOCUMENT_FRAGMENT_NODE;
_extends(DocumentFragment, Node);
function ProcessingInstruction() {}
ProcessingInstruction.prototype.nodeType = PROCESSING_INSTRUCTION_NODE;
_extends(ProcessingInstruction, Node);
function XMLSerializer() {}
XMLSerializer.prototype.serializeToString = function (node, isHtml, nodeFilter) {
return nodeSerializeToString.call(node, isHtml, nodeFilter);
};
Node.prototype.toString = nodeSerializeToString;
function nodeSerializeToString(isHtml, nodeFilter) {
var buf = [];
var refNode = this.nodeType == 9 && this.documentElement || this;
var prefix = refNode.prefix;
var uri = refNode.namespaceURI;
if (uri && prefix == null) {
//console.log(prefix)
var prefix = refNode.lookupPrefix(uri);
if (prefix == null) {
//isHTML = true;
var visibleNamespaces = [{
namespace: uri,
prefix: null
}
//{namespace:uri,prefix:''}
];
}
}
serializeToString(this, buf, isHtml, nodeFilter, visibleNamespaces);
//console.log('###',this.nodeType,uri,prefix,buf.join(''))
return buf.join('');
}
function needNamespaceDefine(node, isHTML, visibleNamespaces) {
var prefix = node.prefix || '';
var uri = node.namespaceURI;
// According to [Namespaces in XML 1.0](https://www.w3.org/TR/REC-xml-names/#ns-using) ,
// and more specifically https://www.w3.org/TR/REC-xml-names/#nsc-NoPrefixUndecl :
// > In a namespace declaration for a prefix [...], the attribute value MUST NOT be empty.
// in a similar manner [Namespaces in XML 1.1](https://www.w3.org/TR/xml-names11/#ns-using)
// and more specifically https://www.w3.org/TR/xml-names11/#nsc-NSDeclared :
// > [...] Furthermore, the attribute value [...] must not be an empty string.
// so serializing empty namespace value like xmlns:ds="" would produce an invalid XML document.
if (!uri) {
return false;
}
if (prefix === "xml" && uri === NAMESPACE$2.XML || uri === NAMESPACE$2.XMLNS) {
return false;
}
var i = visibleNamespaces.length;
while (i--) {
var ns = visibleNamespaces[i];
// get namespace prefix
if (ns.prefix === prefix) {
return ns.namespace !== uri;
}
}
return true;
}
/**
* Well-formed constraint: No < in Attribute Values
* > The replacement text of any entity referred to directly or indirectly
* > in an attribute value must not contain a <.
* @see https://www.w3.org/TR/xml11/#CleanAttrVals
* @see https://www.w3.org/TR/xml11/#NT-AttValue
*
* Literal whitespace other than space that appear in attribute values
* are serialized as their entity references, so they will be preserved.
* (In contrast to whitespace literals in the input which are normalized to spaces)
* @see https://www.w3.org/TR/xml11/#AVNormalize
* @see https://w3c.github.io/DOM-Parsing/#serializing-an-element-s-attributes
*/
function addSerializedAttribute(buf, qualifiedName, value) {
buf.push(' ', qualifiedName, '="', value.replace(/[<>&"\t\n\r]/g, _xmlEncoder), '"');
}
function serializeToString(node, buf, isHTML, nodeFilter, visibleNamespaces) {
if (!visibleNamespaces) {
visibleNamespaces = [];
}
if (nodeFilter) {
node = nodeFilter(node);
if (node) {
if (typeof node == 'string') {
buf.push(node);
return;
}
} else {
return;
}
//buf.sort.apply(attrs, attributeSorter);
}
switch (node.nodeType) {
case ELEMENT_NODE:
var attrs = node.attributes;
var len = attrs.length;
var child = node.firstChild;
var nodeName = node.tagName;
isHTML = NAMESPACE$2.isHTML(node.namespaceURI) || isHTML;
var prefixedNodeName = nodeName;
if (!isHTML && !node.prefix && node.namespaceURI) {
var defaultNS;
// lookup current default ns from `xmlns` attribute
for (var ai = 0; ai < attrs.length; ai++) {
if (attrs.item(ai).name === 'xmlns') {
defaultNS = attrs.item(ai).value;
break;
}
}
if (!defaultNS) {
// lookup current default ns in visibleNamespaces
for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
var namespace = visibleNamespaces[nsi];
if (namespace.prefix === '' && namespace.namespace === node.namespaceURI) {
defaultNS = namespace.namespace;
break;
}
}
}
if (defaultNS !== node.namespaceURI) {
for (var nsi = visibleNamespaces.length - 1; nsi >= 0; nsi--) {
var namespace = visibleNamespaces[nsi];
if (namespace.namespace === node.namespaceURI) {
if (namespace.prefix) {
prefixedNodeName = namespace.prefix + ':' + nodeName;
}
break;
}
}
}
}
buf.push('<', prefixedNodeName);
for (var i = 0; i < len; i++) {
// add namespaces for attributes
var attr = attrs.item(i);
if (attr.prefix == 'xmlns') {
visibleNamespaces.push({
prefix: attr.localName,
namespace: attr.value
});
} else if (attr.nodeName == 'xmlns') {
visibleNamespaces.push({
prefix: '',
namespace: attr.value
});
}
}
for (var i = 0; i < len; i++) {
var attr = attrs.item(i);
if (needNamespaceDefine(attr, isHTML, visibleNamespaces)) {
var prefix = attr.prefix || '';
var uri = attr.namespaceURI;
addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
visibleNamespaces.push({
prefix: prefix,
namespace: uri
});
}
serializeToString(attr, buf, isHTML, nodeFilter, visibleNamespaces);
}
// add namespace for current node
if (nodeName === prefixedNodeName && needNamespaceDefine(node, isHTML, visibleNamespaces)) {
var prefix = node.prefix || '';
var uri = node.namespaceURI;
addSerializedAttribute(buf, prefix ? 'xmlns:' + prefix : "xmlns", uri);
visibleNamespaces.push({
prefix: prefix,
namespace: uri
});
}
if (child || isHTML && !/^(?:meta|link|img|br|hr|input)$/i.test(nodeName)) {
buf.push('>');
//if is cdata child node
if (isHTML && /^script$/i.test(nodeName)) {
while (child) {
if (child.data) {
buf.push(child.data);
} else {
serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
}
child = child.nextSibling;
}
} else {
while (child) {
serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
child = child.nextSibling;
}
}
buf.push('');
} else {
buf.push('/>');
}
// remove added visible namespaces
//visibleNamespaces.length = startVisibleNamespaces;
return;
case DOCUMENT_NODE:
case DOCUMENT_FRAGMENT_NODE:
var child = node.firstChild;
while (child) {
serializeToString(child, buf, isHTML, nodeFilter, visibleNamespaces.slice());
child = child.nextSibling;
}
return;
case ATTRIBUTE_NODE:
return addSerializedAttribute(buf, node.name, node.value);
case TEXT_NODE:
/**
* The ampersand character (&) and the left angle bracket (<) must not appear in their literal form,
* except when used as markup delimiters, or within a comment, a processing instruction, or a CDATA section.
* If they are needed elsewhere, they must be escaped using either numeric character references or the strings
* `&` and `<` respectively.
* The right angle bracket (>) may be represented using the string " > ", and must, for compatibility,
* be escaped using either `>` or a character reference when it appears in the string `]]>` in content,
* when that string is not marking the end of a CDATA section.
*
* In the content of elements, character data is any string of characters
* which does not contain the start-delimiter of any markup
* and does not include the CDATA-section-close delimiter, `]]>`.
*
* @see https://www.w3.org/TR/xml/#NT-CharData
* @see https://w3c.github.io/DOM-Parsing/#xml-serializing-a-text-node
*/
return buf.push(node.data.replace(/[<&>]/g, _xmlEncoder));
case CDATA_SECTION_NODE:
return buf.push('');
case COMMENT_NODE:
return buf.push("");
case DOCUMENT_TYPE_NODE:
var pubid = node.publicId;
var sysid = node.systemId;
buf.push('');
} else if (sysid && sysid != '.') {
buf.push(' SYSTEM ', sysid, '>');
} else {
var sub = node.internalSubset;
if (sub) {
buf.push(" [", sub, "]");
}
buf.push(">");
}
return;
case PROCESSING_INSTRUCTION_NODE:
return buf.push("");
case ENTITY_REFERENCE_NODE:
return buf.push('&', node.nodeName, ';');
//case ENTITY_NODE:
//case NOTATION_NODE:
default:
buf.push('??', node.nodeName);
}
}
function importNode(doc, node, deep) {
var node2;
switch (node.nodeType) {
case ELEMENT_NODE:
node2 = node.cloneNode(false);
node2.ownerDocument = doc;
//var attrs = node2.attributes;
//var len = attrs.length;
//for(var i=0;i',
lt: '<',
quot: '"'
});
/**
* A map of all entities that are detected in an HTML document.
* They contain all entries from `XML_ENTITIES`.
*
* @see XML_ENTITIES
* @see DOMParser.parseFromString
* @see DOMImplementation.prototype.createHTMLDocument
* @see https://html.spec.whatwg.org/#named-character-references WHATWG HTML(5) Spec
* @see https://html.spec.whatwg.org/entities.json JSON
* @see https://www.w3.org/TR/xml-entity-names/ W3C XML Entity Names
* @see https://www.w3.org/TR/html4/sgml/entities.html W3C HTML4/SGML
* @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Character_entity_references_in_HTML Wikipedia (HTML)
* @see https://en.wikipedia.org/wiki/List_of_XML_and_HTML_character_entity_references#Entities_representing_special_characters_in_XHTML Wikpedia (XHTML)
*/
exports.HTML_ENTITIES = freeze({
Aacute: '\u00C1',
aacute: '\u00E1',
Abreve: '\u0102',
abreve: '\u0103',
ac: '\u223E',
acd: '\u223F',
acE: '\u223E\u0333',
Acirc: '\u00C2',
acirc: '\u00E2',
acute: '\u00B4',
Acy: '\u0410',
acy: '\u0430',
AElig: '\u00C6',
aelig: '\u00E6',
af: '\u2061',
Afr: '\uD835\uDD04',
afr: '\uD835\uDD1E',
Agrave: '\u00C0',
agrave: '\u00E0',
alefsym: '\u2135',
aleph: '\u2135',
Alpha: '\u0391',
alpha: '\u03B1',
Amacr: '\u0100',
amacr: '\u0101',
amalg: '\u2A3F',
AMP: '\u0026',
amp: '\u0026',
And: '\u2A53',
and: '\u2227',
andand: '\u2A55',
andd: '\u2A5C',
andslope: '\u2A58',
andv: '\u2A5A',
ang: '\u2220',
ange: '\u29A4',
angle: '\u2220',
angmsd: '\u2221',
angmsdaa: '\u29A8',
angmsdab: '\u29A9',
angmsdac: '\u29AA',
angmsdad: '\u29AB',
angmsdae: '\u29AC',
angmsdaf: '\u29AD',
angmsdag: '\u29AE',
angmsdah: '\u29AF',
angrt: '\u221F',
angrtvb: '\u22BE',
angrtvbd: '\u299D',
angsph: '\u2222',
angst: '\u00C5',
angzarr: '\u237C',
Aogon: '\u0104',
aogon: '\u0105',
Aopf: '\uD835\uDD38',
aopf: '\uD835\uDD52',
ap: '\u2248',
apacir: '\u2A6F',
apE: '\u2A70',
ape: '\u224A',
apid: '\u224B',
apos: '\u0027',
ApplyFunction: '\u2061',
approx: '\u2248',
approxeq: '\u224A',
Aring: '\u00C5',
aring: '\u00E5',
Ascr: '\uD835\uDC9C',
ascr: '\uD835\uDCB6',
Assign: '\u2254',
ast: '\u002A',
asymp: '\u2248',
asympeq: '\u224D',
Atilde: '\u00C3',
atilde: '\u00E3',
Auml: '\u00C4',
auml: '\u00E4',
awconint: '\u2233',
awint: '\u2A11',
backcong: '\u224C',
backepsilon: '\u03F6',
backprime: '\u2035',
backsim: '\u223D',
backsimeq: '\u22CD',
Backslash: '\u2216',
Barv: '\u2AE7',
barvee: '\u22BD',
Barwed: '\u2306',
barwed: '\u2305',
barwedge: '\u2305',
bbrk: '\u23B5',
bbrktbrk: '\u23B6',
bcong: '\u224C',
Bcy: '\u0411',
bcy: '\u0431',
bdquo: '\u201E',
becaus: '\u2235',
Because: '\u2235',
because: '\u2235',
bemptyv: '\u29B0',
bepsi: '\u03F6',
bernou: '\u212C',
Bernoullis: '\u212C',
Beta: '\u0392',
beta: '\u03B2',
beth: '\u2136',
between: '\u226C',
Bfr: '\uD835\uDD05',
bfr: '\uD835\uDD1F',
bigcap: '\u22C2',
bigcirc: '\u25EF',
bigcup: '\u22C3',
bigodot: '\u2A00',
bigoplus: '\u2A01',
bigotimes: '\u2A02',
bigsqcup: '\u2A06',
bigstar: '\u2605',
bigtriangledown: '\u25BD',
bigtriangleup: '\u25B3',
biguplus: '\u2A04',
bigvee: '\u22C1',
bigwedge: '\u22C0',
bkarow: '\u290D',
blacklozenge: '\u29EB',
blacksquare: '\u25AA',
blacktriangle: '\u25B4',
blacktriangledown: '\u25BE',
blacktriangleleft: '\u25C2',
blacktriangleright: '\u25B8',
blank: '\u2423',
blk12: '\u2592',
blk14: '\u2591',
blk34: '\u2593',
block: '\u2588',
bne: '\u003D\u20E5',
bnequiv: '\u2261\u20E5',
bNot: '\u2AED',
bnot: '\u2310',
Bopf: '\uD835\uDD39',
bopf: '\uD835\uDD53',
bot: '\u22A5',
bottom: '\u22A5',
bowtie: '\u22C8',
boxbox: '\u29C9',
boxDL: '\u2557',
boxDl: '\u2556',
boxdL: '\u2555',
boxdl: '\u2510',
boxDR: '\u2554',
boxDr: '\u2553',
boxdR: '\u2552',
boxdr: '\u250C',
boxH: '\u2550',
boxh: '\u2500',
boxHD: '\u2566',
boxHd: '\u2564',
boxhD: '\u2565',
boxhd: '\u252C',
boxHU: '\u2569',
boxHu: '\u2567',
boxhU: '\u2568',
boxhu: '\u2534',
boxminus: '\u229F',
boxplus: '\u229E',
boxtimes: '\u22A0',
boxUL: '\u255D',
boxUl: '\u255C',
boxuL: '\u255B',
boxul: '\u2518',
boxUR: '\u255A',
boxUr: '\u2559',
boxuR: '\u2558',
boxur: '\u2514',
boxV: '\u2551',
boxv: '\u2502',
boxVH: '\u256C',
boxVh: '\u256B',
boxvH: '\u256A',
boxvh: '\u253C',
boxVL: '\u2563',
boxVl: '\u2562',
boxvL: '\u2561',
boxvl: '\u2524',
boxVR: '\u2560',
boxVr: '\u255F',
boxvR: '\u255E',
boxvr: '\u251C',
bprime: '\u2035',
Breve: '\u02D8',
breve: '\u02D8',
brvbar: '\u00A6',
Bscr: '\u212C',
bscr: '\uD835\uDCB7',
bsemi: '\u204F',
bsim: '\u223D',
bsime: '\u22CD',
bsol: '\u005C',
bsolb: '\u29C5',
bsolhsub: '\u27C8',
bull: '\u2022',
bullet: '\u2022',
bump: '\u224E',
bumpE: '\u2AAE',
bumpe: '\u224F',
Bumpeq: '\u224E',
bumpeq: '\u224F',
Cacute: '\u0106',
cacute: '\u0107',
Cap: '\u22D2',
cap: '\u2229',
capand: '\u2A44',
capbrcup: '\u2A49',
capcap: '\u2A4B',
capcup: '\u2A47',
capdot: '\u2A40',
CapitalDifferentialD: '\u2145',
caps: '\u2229\uFE00',
caret: '\u2041',
caron: '\u02C7',
Cayleys: '\u212D',
ccaps: '\u2A4D',
Ccaron: '\u010C',
ccaron: '\u010D',
Ccedil: '\u00C7',
ccedil: '\u00E7',
Ccirc: '\u0108',
ccirc: '\u0109',
Cconint: '\u2230',
ccups: '\u2A4C',
ccupssm: '\u2A50',
Cdot: '\u010A',
cdot: '\u010B',
cedil: '\u00B8',
Cedilla: '\u00B8',
cemptyv: '\u29B2',
cent: '\u00A2',
CenterDot: '\u00B7',
centerdot: '\u00B7',
Cfr: '\u212D',
cfr: '\uD835\uDD20',
CHcy: '\u0427',
chcy: '\u0447',
check: '\u2713',
checkmark: '\u2713',
Chi: '\u03A7',
chi: '\u03C7',
cir: '\u25CB',
circ: '\u02C6',
circeq: '\u2257',
circlearrowleft: '\u21BA',
circlearrowright: '\u21BB',
circledast: '\u229B',
circledcirc: '\u229A',
circleddash: '\u229D',
CircleDot: '\u2299',
circledR: '\u00AE',
circledS: '\u24C8',
CircleMinus: '\u2296',
CirclePlus: '\u2295',
CircleTimes: '\u2297',
cirE: '\u29C3',
cire: '\u2257',
cirfnint: '\u2A10',
cirmid: '\u2AEF',
cirscir: '\u29C2',
ClockwiseContourIntegral: '\u2232',
CloseCurlyDoubleQuote: '\u201D',
CloseCurlyQuote: '\u2019',
clubs: '\u2663',
clubsuit: '\u2663',
Colon: '\u2237',
colon: '\u003A',
Colone: '\u2A74',
colone: '\u2254',
coloneq: '\u2254',
comma: '\u002C',
commat: '\u0040',
comp: '\u2201',
compfn: '\u2218',
complement: '\u2201',
complexes: '\u2102',
cong: '\u2245',
congdot: '\u2A6D',
Congruent: '\u2261',
Conint: '\u222F',
conint: '\u222E',
ContourIntegral: '\u222E',
Copf: '\u2102',
copf: '\uD835\uDD54',
coprod: '\u2210',
Coproduct: '\u2210',
COPY: '\u00A9',
copy: '\u00A9',
copysr: '\u2117',
CounterClockwiseContourIntegral: '\u2233',
crarr: '\u21B5',
Cross: '\u2A2F',
cross: '\u2717',
Cscr: '\uD835\uDC9E',
cscr: '\uD835\uDCB8',
csub: '\u2ACF',
csube: '\u2AD1',
csup: '\u2AD0',
csupe: '\u2AD2',
ctdot: '\u22EF',
cudarrl: '\u2938',
cudarrr: '\u2935',
cuepr: '\u22DE',
cuesc: '\u22DF',
cularr: '\u21B6',
cularrp: '\u293D',
Cup: '\u22D3',
cup: '\u222A',
cupbrcap: '\u2A48',
CupCap: '\u224D',
cupcap: '\u2A46',
cupcup: '\u2A4A',
cupdot: '\u228D',
cupor: '\u2A45',
cups: '\u222A\uFE00',
curarr: '\u21B7',
curarrm: '\u293C',
curlyeqprec: '\u22DE',
curlyeqsucc: '\u22DF',
curlyvee: '\u22CE',
curlywedge: '\u22CF',
curren: '\u00A4',
curvearrowleft: '\u21B6',
curvearrowright: '\u21B7',
cuvee: '\u22CE',
cuwed: '\u22CF',
cwconint: '\u2232',
cwint: '\u2231',
cylcty: '\u232D',
Dagger: '\u2021',
dagger: '\u2020',
daleth: '\u2138',
Darr: '\u21A1',
dArr: '\u21D3',
darr: '\u2193',
dash: '\u2010',
Dashv: '\u2AE4',
dashv: '\u22A3',
dbkarow: '\u290F',
dblac: '\u02DD',
Dcaron: '\u010E',
dcaron: '\u010F',
Dcy: '\u0414',
dcy: '\u0434',
DD: '\u2145',
dd: '\u2146',
ddagger: '\u2021',
ddarr: '\u21CA',
DDotrahd: '\u2911',
ddotseq: '\u2A77',
deg: '\u00B0',
Del: '\u2207',
Delta: '\u0394',
delta: '\u03B4',
demptyv: '\u29B1',
dfisht: '\u297F',
Dfr: '\uD835\uDD07',
dfr: '\uD835\uDD21',
dHar: '\u2965',
dharl: '\u21C3',
dharr: '\u21C2',
DiacriticalAcute: '\u00B4',
DiacriticalDot: '\u02D9',
DiacriticalDoubleAcute: '\u02DD',
DiacriticalGrave: '\u0060',
DiacriticalTilde: '\u02DC',
diam: '\u22C4',
Diamond: '\u22C4',
diamond: '\u22C4',
diamondsuit: '\u2666',
diams: '\u2666',
die: '\u00A8',
DifferentialD: '\u2146',
digamma: '\u03DD',
disin: '\u22F2',
div: '\u00F7',
divide: '\u00F7',
divideontimes: '\u22C7',
divonx: '\u22C7',
DJcy: '\u0402',
djcy: '\u0452',
dlcorn: '\u231E',
dlcrop: '\u230D',
dollar: '\u0024',
Dopf: '\uD835\uDD3B',
dopf: '\uD835\uDD55',
Dot: '\u00A8',
dot: '\u02D9',
DotDot: '\u20DC',
doteq: '\u2250',
doteqdot: '\u2251',
DotEqual: '\u2250',
dotminus: '\u2238',
dotplus: '\u2214',
dotsquare: '\u22A1',
doublebarwedge: '\u2306',
DoubleContourIntegral: '\u222F',
DoubleDot: '\u00A8',
DoubleDownArrow: '\u21D3',
DoubleLeftArrow: '\u21D0',
DoubleLeftRightArrow: '\u21D4',
DoubleLeftTee: '\u2AE4',
DoubleLongLeftArrow: '\u27F8',
DoubleLongLeftRightArrow: '\u27FA',
DoubleLongRightArrow: '\u27F9',
DoubleRightArrow: '\u21D2',
DoubleRightTee: '\u22A8',
DoubleUpArrow: '\u21D1',
DoubleUpDownArrow: '\u21D5',
DoubleVerticalBar: '\u2225',
DownArrow: '\u2193',
Downarrow: '\u21D3',
downarrow: '\u2193',
DownArrowBar: '\u2913',
DownArrowUpArrow: '\u21F5',
DownBreve: '\u0311',
downdownarrows: '\u21CA',
downharpoonleft: '\u21C3',
downharpoonright: '\u21C2',
DownLeftRightVector: '\u2950',
DownLeftTeeVector: '\u295E',
DownLeftVector: '\u21BD',
DownLeftVectorBar: '\u2956',
DownRightTeeVector: '\u295F',
DownRightVector: '\u21C1',
DownRightVectorBar: '\u2957',
DownTee: '\u22A4',
DownTeeArrow: '\u21A7',
drbkarow: '\u2910',
drcorn: '\u231F',
drcrop: '\u230C',
Dscr: '\uD835\uDC9F',
dscr: '\uD835\uDCB9',
DScy: '\u0405',
dscy: '\u0455',
dsol: '\u29F6',
Dstrok: '\u0110',
dstrok: '\u0111',
dtdot: '\u22F1',
dtri: '\u25BF',
dtrif: '\u25BE',
duarr: '\u21F5',
duhar: '\u296F',
dwangle: '\u29A6',
DZcy: '\u040F',
dzcy: '\u045F',
dzigrarr: '\u27FF',
Eacute: '\u00C9',
eacute: '\u00E9',
easter: '\u2A6E',
Ecaron: '\u011A',
ecaron: '\u011B',
ecir: '\u2256',
Ecirc: '\u00CA',
ecirc: '\u00EA',
ecolon: '\u2255',
Ecy: '\u042D',
ecy: '\u044D',
eDDot: '\u2A77',
Edot: '\u0116',
eDot: '\u2251',
edot: '\u0117',
ee: '\u2147',
efDot: '\u2252',
Efr: '\uD835\uDD08',
efr: '\uD835\uDD22',
eg: '\u2A9A',
Egrave: '\u00C8',
egrave: '\u00E8',
egs: '\u2A96',
egsdot: '\u2A98',
el: '\u2A99',
Element: '\u2208',
elinters: '\u23E7',
ell: '\u2113',
els: '\u2A95',
elsdot: '\u2A97',
Emacr: '\u0112',
emacr: '\u0113',
empty: '\u2205',
emptyset: '\u2205',
EmptySmallSquare: '\u25FB',
emptyv: '\u2205',
EmptyVerySmallSquare: '\u25AB',
emsp: '\u2003',
emsp13: '\u2004',
emsp14: '\u2005',
ENG: '\u014A',
eng: '\u014B',
ensp: '\u2002',
Eogon: '\u0118',
eogon: '\u0119',
Eopf: '\uD835\uDD3C',
eopf: '\uD835\uDD56',
epar: '\u22D5',
eparsl: '\u29E3',
eplus: '\u2A71',
epsi: '\u03B5',
Epsilon: '\u0395',
epsilon: '\u03B5',
epsiv: '\u03F5',
eqcirc: '\u2256',
eqcolon: '\u2255',
eqsim: '\u2242',
eqslantgtr: '\u2A96',
eqslantless: '\u2A95',
Equal: '\u2A75',
equals: '\u003D',
EqualTilde: '\u2242',
equest: '\u225F',
Equilibrium: '\u21CC',
equiv: '\u2261',
equivDD: '\u2A78',
eqvparsl: '\u29E5',
erarr: '\u2971',
erDot: '\u2253',
Escr: '\u2130',
escr: '\u212F',
esdot: '\u2250',
Esim: '\u2A73',
esim: '\u2242',
Eta: '\u0397',
eta: '\u03B7',
ETH: '\u00D0',
eth: '\u00F0',
Euml: '\u00CB',
euml: '\u00EB',
euro: '\u20AC',
excl: '\u0021',
exist: '\u2203',
Exists: '\u2203',
expectation: '\u2130',
ExponentialE: '\u2147',
exponentiale: '\u2147',
fallingdotseq: '\u2252',
Fcy: '\u0424',
fcy: '\u0444',
female: '\u2640',
ffilig: '\uFB03',
fflig: '\uFB00',
ffllig: '\uFB04',
Ffr: '\uD835\uDD09',
ffr: '\uD835\uDD23',
filig: '\uFB01',
FilledSmallSquare: '\u25FC',
FilledVerySmallSquare: '\u25AA',
fjlig: '\u0066\u006A',
flat: '\u266D',
fllig: '\uFB02',
fltns: '\u25B1',
fnof: '\u0192',
Fopf: '\uD835\uDD3D',
fopf: '\uD835\uDD57',
ForAll: '\u2200',
forall: '\u2200',
fork: '\u22D4',
forkv: '\u2AD9',
Fouriertrf: '\u2131',
fpartint: '\u2A0D',
frac12: '\u00BD',
frac13: '\u2153',
frac14: '\u00BC',
frac15: '\u2155',
frac16: '\u2159',
frac18: '\u215B',
frac23: '\u2154',
frac25: '\u2156',
frac34: '\u00BE',
frac35: '\u2157',
frac38: '\u215C',
frac45: '\u2158',
frac56: '\u215A',
frac58: '\u215D',
frac78: '\u215E',
frasl: '\u2044',
frown: '\u2322',
Fscr: '\u2131',
fscr: '\uD835\uDCBB',
gacute: '\u01F5',
Gamma: '\u0393',
gamma: '\u03B3',
Gammad: '\u03DC',
gammad: '\u03DD',
gap: '\u2A86',
Gbreve: '\u011E',
gbreve: '\u011F',
Gcedil: '\u0122',
Gcirc: '\u011C',
gcirc: '\u011D',
Gcy: '\u0413',
gcy: '\u0433',
Gdot: '\u0120',
gdot: '\u0121',
gE: '\u2267',
ge: '\u2265',
gEl: '\u2A8C',
gel: '\u22DB',
geq: '\u2265',
geqq: '\u2267',
geqslant: '\u2A7E',
ges: '\u2A7E',
gescc: '\u2AA9',
gesdot: '\u2A80',
gesdoto: '\u2A82',
gesdotol: '\u2A84',
gesl: '\u22DB\uFE00',
gesles: '\u2A94',
Gfr: '\uD835\uDD0A',
gfr: '\uD835\uDD24',
Gg: '\u22D9',
gg: '\u226B',
ggg: '\u22D9',
gimel: '\u2137',
GJcy: '\u0403',
gjcy: '\u0453',
gl: '\u2277',
gla: '\u2AA5',
glE: '\u2A92',
glj: '\u2AA4',
gnap: '\u2A8A',
gnapprox: '\u2A8A',
gnE: '\u2269',
gne: '\u2A88',
gneq: '\u2A88',
gneqq: '\u2269',
gnsim: '\u22E7',
Gopf: '\uD835\uDD3E',
gopf: '\uD835\uDD58',
grave: '\u0060',
GreaterEqual: '\u2265',
GreaterEqualLess: '\u22DB',
GreaterFullEqual: '\u2267',
GreaterGreater: '\u2AA2',
GreaterLess: '\u2277',
GreaterSlantEqual: '\u2A7E',
GreaterTilde: '\u2273',
Gscr: '\uD835\uDCA2',
gscr: '\u210A',
gsim: '\u2273',
gsime: '\u2A8E',
gsiml: '\u2A90',
Gt: '\u226B',
GT: '\u003E',
gt: '\u003E',
gtcc: '\u2AA7',
gtcir: '\u2A7A',
gtdot: '\u22D7',
gtlPar: '\u2995',
gtquest: '\u2A7C',
gtrapprox: '\u2A86',
gtrarr: '\u2978',
gtrdot: '\u22D7',
gtreqless: '\u22DB',
gtreqqless: '\u2A8C',
gtrless: '\u2277',
gtrsim: '\u2273',
gvertneqq: '\u2269\uFE00',
gvnE: '\u2269\uFE00',
Hacek: '\u02C7',
hairsp: '\u200A',
half: '\u00BD',
hamilt: '\u210B',
HARDcy: '\u042A',
hardcy: '\u044A',
hArr: '\u21D4',
harr: '\u2194',
harrcir: '\u2948',
harrw: '\u21AD',
Hat: '\u005E',
hbar: '\u210F',
Hcirc: '\u0124',
hcirc: '\u0125',
hearts: '\u2665',
heartsuit: '\u2665',
hellip: '\u2026',
hercon: '\u22B9',
Hfr: '\u210C',
hfr: '\uD835\uDD25',
HilbertSpace: '\u210B',
hksearow: '\u2925',
hkswarow: '\u2926',
hoarr: '\u21FF',
homtht: '\u223B',
hookleftarrow: '\u21A9',
hookrightarrow: '\u21AA',
Hopf: '\u210D',
hopf: '\uD835\uDD59',
horbar: '\u2015',
HorizontalLine: '\u2500',
Hscr: '\u210B',
hscr: '\uD835\uDCBD',
hslash: '\u210F',
Hstrok: '\u0126',
hstrok: '\u0127',
HumpDownHump: '\u224E',
HumpEqual: '\u224F',
hybull: '\u2043',
hyphen: '\u2010',
Iacute: '\u00CD',
iacute: '\u00ED',
ic: '\u2063',
Icirc: '\u00CE',
icirc: '\u00EE',
Icy: '\u0418',
icy: '\u0438',
Idot: '\u0130',
IEcy: '\u0415',
iecy: '\u0435',
iexcl: '\u00A1',
iff: '\u21D4',
Ifr: '\u2111',
ifr: '\uD835\uDD26',
Igrave: '\u00CC',
igrave: '\u00EC',
ii: '\u2148',
iiiint: '\u2A0C',
iiint: '\u222D',
iinfin: '\u29DC',
iiota: '\u2129',
IJlig: '\u0132',
ijlig: '\u0133',
Im: '\u2111',
Imacr: '\u012A',
imacr: '\u012B',
image: '\u2111',
ImaginaryI: '\u2148',
imagline: '\u2110',
imagpart: '\u2111',
imath: '\u0131',
imof: '\u22B7',
imped: '\u01B5',
Implies: '\u21D2',
in: '\u2208',
incare: '\u2105',
infin: '\u221E',
infintie: '\u29DD',
inodot: '\u0131',
Int: '\u222C',
int: '\u222B',
intcal: '\u22BA',
integers: '\u2124',
Integral: '\u222B',
intercal: '\u22BA',
Intersection: '\u22C2',
intlarhk: '\u2A17',
intprod: '\u2A3C',
InvisibleComma: '\u2063',
InvisibleTimes: '\u2062',
IOcy: '\u0401',
iocy: '\u0451',
Iogon: '\u012E',
iogon: '\u012F',
Iopf: '\uD835\uDD40',
iopf: '\uD835\uDD5A',
Iota: '\u0399',
iota: '\u03B9',
iprod: '\u2A3C',
iquest: '\u00BF',
Iscr: '\u2110',
iscr: '\uD835\uDCBE',
isin: '\u2208',
isindot: '\u22F5',
isinE: '\u22F9',
isins: '\u22F4',
isinsv: '\u22F3',
isinv: '\u2208',
it: '\u2062',
Itilde: '\u0128',
itilde: '\u0129',
Iukcy: '\u0406',
iukcy: '\u0456',
Iuml: '\u00CF',
iuml: '\u00EF',
Jcirc: '\u0134',
jcirc: '\u0135',
Jcy: '\u0419',
jcy: '\u0439',
Jfr: '\uD835\uDD0D',
jfr: '\uD835\uDD27',
jmath: '\u0237',
Jopf: '\uD835\uDD41',
jopf: '\uD835\uDD5B',
Jscr: '\uD835\uDCA5',
jscr: '\uD835\uDCBF',
Jsercy: '\u0408',
jsercy: '\u0458',
Jukcy: '\u0404',
jukcy: '\u0454',
Kappa: '\u039A',
kappa: '\u03BA',
kappav: '\u03F0',
Kcedil: '\u0136',
kcedil: '\u0137',
Kcy: '\u041A',
kcy: '\u043A',
Kfr: '\uD835\uDD0E',
kfr: '\uD835\uDD28',
kgreen: '\u0138',
KHcy: '\u0425',
khcy: '\u0445',
KJcy: '\u040C',
kjcy: '\u045C',
Kopf: '\uD835\uDD42',
kopf: '\uD835\uDD5C',
Kscr: '\uD835\uDCA6',
kscr: '\uD835\uDCC0',
lAarr: '\u21DA',
Lacute: '\u0139',
lacute: '\u013A',
laemptyv: '\u29B4',
lagran: '\u2112',
Lambda: '\u039B',
lambda: '\u03BB',
Lang: '\u27EA',
lang: '\u27E8',
langd: '\u2991',
langle: '\u27E8',
lap: '\u2A85',
Laplacetrf: '\u2112',
laquo: '\u00AB',
Larr: '\u219E',
lArr: '\u21D0',
larr: '\u2190',
larrb: '\u21E4',
larrbfs: '\u291F',
larrfs: '\u291D',
larrhk: '\u21A9',
larrlp: '\u21AB',
larrpl: '\u2939',
larrsim: '\u2973',
larrtl: '\u21A2',
lat: '\u2AAB',
lAtail: '\u291B',
latail: '\u2919',
late: '\u2AAD',
lates: '\u2AAD\uFE00',
lBarr: '\u290E',
lbarr: '\u290C',
lbbrk: '\u2772',
lbrace: '\u007B',
lbrack: '\u005B',
lbrke: '\u298B',
lbrksld: '\u298F',
lbrkslu: '\u298D',
Lcaron: '\u013D',
lcaron: '\u013E',
Lcedil: '\u013B',
lcedil: '\u013C',
lceil: '\u2308',
lcub: '\u007B',
Lcy: '\u041B',
lcy: '\u043B',
ldca: '\u2936',
ldquo: '\u201C',
ldquor: '\u201E',
ldrdhar: '\u2967',
ldrushar: '\u294B',
ldsh: '\u21B2',
lE: '\u2266',
le: '\u2264',
LeftAngleBracket: '\u27E8',
LeftArrow: '\u2190',
Leftarrow: '\u21D0',
leftarrow: '\u2190',
LeftArrowBar: '\u21E4',
LeftArrowRightArrow: '\u21C6',
leftarrowtail: '\u21A2',
LeftCeiling: '\u2308',
LeftDoubleBracket: '\u27E6',
LeftDownTeeVector: '\u2961',
LeftDownVector: '\u21C3',
LeftDownVectorBar: '\u2959',
LeftFloor: '\u230A',
leftharpoondown: '\u21BD',
leftharpoonup: '\u21BC',
leftleftarrows: '\u21C7',
LeftRightArrow: '\u2194',
Leftrightarrow: '\u21D4',
leftrightarrow: '\u2194',
leftrightarrows: '\u21C6',
leftrightharpoons: '\u21CB',
leftrightsquigarrow: '\u21AD',
LeftRightVector: '\u294E',
LeftTee: '\u22A3',
LeftTeeArrow: '\u21A4',
LeftTeeVector: '\u295A',
leftthreetimes: '\u22CB',
LeftTriangle: '\u22B2',
LeftTriangleBar: '\u29CF',
LeftTriangleEqual: '\u22B4',
LeftUpDownVector: '\u2951',
LeftUpTeeVector: '\u2960',
LeftUpVector: '\u21BF',
LeftUpVectorBar: '\u2958',
LeftVector: '\u21BC',
LeftVectorBar: '\u2952',
lEg: '\u2A8B',
leg: '\u22DA',
leq: '\u2264',
leqq: '\u2266',
leqslant: '\u2A7D',
les: '\u2A7D',
lescc: '\u2AA8',
lesdot: '\u2A7F',
lesdoto: '\u2A81',
lesdotor: '\u2A83',
lesg: '\u22DA\uFE00',
lesges: '\u2A93',
lessapprox: '\u2A85',
lessdot: '\u22D6',
lesseqgtr: '\u22DA',
lesseqqgtr: '\u2A8B',
LessEqualGreater: '\u22DA',
LessFullEqual: '\u2266',
LessGreater: '\u2276',
lessgtr: '\u2276',
LessLess: '\u2AA1',
lesssim: '\u2272',
LessSlantEqual: '\u2A7D',
LessTilde: '\u2272',
lfisht: '\u297C',
lfloor: '\u230A',
Lfr: '\uD835\uDD0F',
lfr: '\uD835\uDD29',
lg: '\u2276',
lgE: '\u2A91',
lHar: '\u2962',
lhard: '\u21BD',
lharu: '\u21BC',
lharul: '\u296A',
lhblk: '\u2584',
LJcy: '\u0409',
ljcy: '\u0459',
Ll: '\u22D8',
ll: '\u226A',
llarr: '\u21C7',
llcorner: '\u231E',
Lleftarrow: '\u21DA',
llhard: '\u296B',
lltri: '\u25FA',
Lmidot: '\u013F',
lmidot: '\u0140',
lmoust: '\u23B0',
lmoustache: '\u23B0',
lnap: '\u2A89',
lnapprox: '\u2A89',
lnE: '\u2268',
lne: '\u2A87',
lneq: '\u2A87',
lneqq: '\u2268',
lnsim: '\u22E6',
loang: '\u27EC',
loarr: '\u21FD',
lobrk: '\u27E6',
LongLeftArrow: '\u27F5',
Longleftarrow: '\u27F8',
longleftarrow: '\u27F5',
LongLeftRightArrow: '\u27F7',
Longleftrightarrow: '\u27FA',
longleftrightarrow: '\u27F7',
longmapsto: '\u27FC',
LongRightArrow: '\u27F6',
Longrightarrow: '\u27F9',
longrightarrow: '\u27F6',
looparrowleft: '\u21AB',
looparrowright: '\u21AC',
lopar: '\u2985',
Lopf: '\uD835\uDD43',
lopf: '\uD835\uDD5D',
loplus: '\u2A2D',
lotimes: '\u2A34',
lowast: '\u2217',
lowbar: '\u005F',
LowerLeftArrow: '\u2199',
LowerRightArrow: '\u2198',
loz: '\u25CA',
lozenge: '\u25CA',
lozf: '\u29EB',
lpar: '\u0028',
lparlt: '\u2993',
lrarr: '\u21C6',
lrcorner: '\u231F',
lrhar: '\u21CB',
lrhard: '\u296D',
lrm: '\u200E',
lrtri: '\u22BF',
lsaquo: '\u2039',
Lscr: '\u2112',
lscr: '\uD835\uDCC1',
Lsh: '\u21B0',
lsh: '\u21B0',
lsim: '\u2272',
lsime: '\u2A8D',
lsimg: '\u2A8F',
lsqb: '\u005B',
lsquo: '\u2018',
lsquor: '\u201A',
Lstrok: '\u0141',
lstrok: '\u0142',
Lt: '\u226A',
LT: '\u003C',
lt: '\u003C',
ltcc: '\u2AA6',
ltcir: '\u2A79',
ltdot: '\u22D6',
lthree: '\u22CB',
ltimes: '\u22C9',
ltlarr: '\u2976',
ltquest: '\u2A7B',
ltri: '\u25C3',
ltrie: '\u22B4',
ltrif: '\u25C2',
ltrPar: '\u2996',
lurdshar: '\u294A',
luruhar: '\u2966',
lvertneqq: '\u2268\uFE00',
lvnE: '\u2268\uFE00',
macr: '\u00AF',
male: '\u2642',
malt: '\u2720',
maltese: '\u2720',
Map: '\u2905',
map: '\u21A6',
mapsto: '\u21A6',
mapstodown: '\u21A7',
mapstoleft: '\u21A4',
mapstoup: '\u21A5',
marker: '\u25AE',
mcomma: '\u2A29',
Mcy: '\u041C',
mcy: '\u043C',
mdash: '\u2014',
mDDot: '\u223A',
measuredangle: '\u2221',
MediumSpace: '\u205F',
Mellintrf: '\u2133',
Mfr: '\uD835\uDD10',
mfr: '\uD835\uDD2A',
mho: '\u2127',
micro: '\u00B5',
mid: '\u2223',
midast: '\u002A',
midcir: '\u2AF0',
middot: '\u00B7',
minus: '\u2212',
minusb: '\u229F',
minusd: '\u2238',
minusdu: '\u2A2A',
MinusPlus: '\u2213',
mlcp: '\u2ADB',
mldr: '\u2026',
mnplus: '\u2213',
models: '\u22A7',
Mopf: '\uD835\uDD44',
mopf: '\uD835\uDD5E',
mp: '\u2213',
Mscr: '\u2133',
mscr: '\uD835\uDCC2',
mstpos: '\u223E',
Mu: '\u039C',
mu: '\u03BC',
multimap: '\u22B8',
mumap: '\u22B8',
nabla: '\u2207',
Nacute: '\u0143',
nacute: '\u0144',
nang: '\u2220\u20D2',
nap: '\u2249',
napE: '\u2A70\u0338',
napid: '\u224B\u0338',
napos: '\u0149',
napprox: '\u2249',
natur: '\u266E',
natural: '\u266E',
naturals: '\u2115',
nbsp: '\u00A0',
nbump: '\u224E\u0338',
nbumpe: '\u224F\u0338',
ncap: '\u2A43',
Ncaron: '\u0147',
ncaron: '\u0148',
Ncedil: '\u0145',
ncedil: '\u0146',
ncong: '\u2247',
ncongdot: '\u2A6D\u0338',
ncup: '\u2A42',
Ncy: '\u041D',
ncy: '\u043D',
ndash: '\u2013',
ne: '\u2260',
nearhk: '\u2924',
neArr: '\u21D7',
nearr: '\u2197',
nearrow: '\u2197',
nedot: '\u2250\u0338',
NegativeMediumSpace: '\u200B',
NegativeThickSpace: '\u200B',
NegativeThinSpace: '\u200B',
NegativeVeryThinSpace: '\u200B',
nequiv: '\u2262',
nesear: '\u2928',
nesim: '\u2242\u0338',
NestedGreaterGreater: '\u226B',
NestedLessLess: '\u226A',
NewLine: '\u000A',
nexist: '\u2204',
nexists: '\u2204',
Nfr: '\uD835\uDD11',
nfr: '\uD835\uDD2B',
ngE: '\u2267\u0338',
nge: '\u2271',
ngeq: '\u2271',
ngeqq: '\u2267\u0338',
ngeqslant: '\u2A7E\u0338',
nges: '\u2A7E\u0338',
nGg: '\u22D9\u0338',
ngsim: '\u2275',
nGt: '\u226B\u20D2',
ngt: '\u226F',
ngtr: '\u226F',
nGtv: '\u226B\u0338',
nhArr: '\u21CE',
nharr: '\u21AE',
nhpar: '\u2AF2',
ni: '\u220B',
nis: '\u22FC',
nisd: '\u22FA',
niv: '\u220B',
NJcy: '\u040A',
njcy: '\u045A',
nlArr: '\u21CD',
nlarr: '\u219A',
nldr: '\u2025',
nlE: '\u2266\u0338',
nle: '\u2270',
nLeftarrow: '\u21CD',
nleftarrow: '\u219A',
nLeftrightarrow: '\u21CE',
nleftrightarrow: '\u21AE',
nleq: '\u2270',
nleqq: '\u2266\u0338',
nleqslant: '\u2A7D\u0338',
nles: '\u2A7D\u0338',
nless: '\u226E',
nLl: '\u22D8\u0338',
nlsim: '\u2274',
nLt: '\u226A\u20D2',
nlt: '\u226E',
nltri: '\u22EA',
nltrie: '\u22EC',
nLtv: '\u226A\u0338',
nmid: '\u2224',
NoBreak: '\u2060',
NonBreakingSpace: '\u00A0',
Nopf: '\u2115',
nopf: '\uD835\uDD5F',
Not: '\u2AEC',
not: '\u00AC',
NotCongruent: '\u2262',
NotCupCap: '\u226D',
NotDoubleVerticalBar: '\u2226',
NotElement: '\u2209',
NotEqual: '\u2260',
NotEqualTilde: '\u2242\u0338',
NotExists: '\u2204',
NotGreater: '\u226F',
NotGreaterEqual: '\u2271',
NotGreaterFullEqual: '\u2267\u0338',
NotGreaterGreater: '\u226B\u0338',
NotGreaterLess: '\u2279',
NotGreaterSlantEqual: '\u2A7E\u0338',
NotGreaterTilde: '\u2275',
NotHumpDownHump: '\u224E\u0338',
NotHumpEqual: '\u224F\u0338',
notin: '\u2209',
notindot: '\u22F5\u0338',
notinE: '\u22F9\u0338',
notinva: '\u2209',
notinvb: '\u22F7',
notinvc: '\u22F6',
NotLeftTriangle: '\u22EA',
NotLeftTriangleBar: '\u29CF\u0338',
NotLeftTriangleEqual: '\u22EC',
NotLess: '\u226E',
NotLessEqual: '\u2270',
NotLessGreater: '\u2278',
NotLessLess: '\u226A\u0338',
NotLessSlantEqual: '\u2A7D\u0338',
NotLessTilde: '\u2274',
NotNestedGreaterGreater: '\u2AA2\u0338',
NotNestedLessLess: '\u2AA1\u0338',
notni: '\u220C',
notniva: '\u220C',
notnivb: '\u22FE',
notnivc: '\u22FD',
NotPrecedes: '\u2280',
NotPrecedesEqual: '\u2AAF\u0338',
NotPrecedesSlantEqual: '\u22E0',
NotReverseElement: '\u220C',
NotRightTriangle: '\u22EB',
NotRightTriangleBar: '\u29D0\u0338',
NotRightTriangleEqual: '\u22ED',
NotSquareSubset: '\u228F\u0338',
NotSquareSubsetEqual: '\u22E2',
NotSquareSuperset: '\u2290\u0338',
NotSquareSupersetEqual: '\u22E3',
NotSubset: '\u2282\u20D2',
NotSubsetEqual: '\u2288',
NotSucceeds: '\u2281',
NotSucceedsEqual: '\u2AB0\u0338',
NotSucceedsSlantEqual: '\u22E1',
NotSucceedsTilde: '\u227F\u0338',
NotSuperset: '\u2283\u20D2',
NotSupersetEqual: '\u2289',
NotTilde: '\u2241',
NotTildeEqual: '\u2244',
NotTildeFullEqual: '\u2247',
NotTildeTilde: '\u2249',
NotVerticalBar: '\u2224',
npar: '\u2226',
nparallel: '\u2226',
nparsl: '\u2AFD\u20E5',
npart: '\u2202\u0338',
npolint: '\u2A14',
npr: '\u2280',
nprcue: '\u22E0',
npre: '\u2AAF\u0338',
nprec: '\u2280',
npreceq: '\u2AAF\u0338',
nrArr: '\u21CF',
nrarr: '\u219B',
nrarrc: '\u2933\u0338',
nrarrw: '\u219D\u0338',
nRightarrow: '\u21CF',
nrightarrow: '\u219B',
nrtri: '\u22EB',
nrtrie: '\u22ED',
nsc: '\u2281',
nsccue: '\u22E1',
nsce: '\u2AB0\u0338',
Nscr: '\uD835\uDCA9',
nscr: '\uD835\uDCC3',
nshortmid: '\u2224',
nshortparallel: '\u2226',
nsim: '\u2241',
nsime: '\u2244',
nsimeq: '\u2244',
nsmid: '\u2224',
nspar: '\u2226',
nsqsube: '\u22E2',
nsqsupe: '\u22E3',
nsub: '\u2284',
nsubE: '\u2AC5\u0338',
nsube: '\u2288',
nsubset: '\u2282\u20D2',
nsubseteq: '\u2288',
nsubseteqq: '\u2AC5\u0338',
nsucc: '\u2281',
nsucceq: '\u2AB0\u0338',
nsup: '\u2285',
nsupE: '\u2AC6\u0338',
nsupe: '\u2289',
nsupset: '\u2283\u20D2',
nsupseteq: '\u2289',
nsupseteqq: '\u2AC6\u0338',
ntgl: '\u2279',
Ntilde: '\u00D1',
ntilde: '\u00F1',
ntlg: '\u2278',
ntriangleleft: '\u22EA',
ntrianglelefteq: '\u22EC',
ntriangleright: '\u22EB',
ntrianglerighteq: '\u22ED',
Nu: '\u039D',
nu: '\u03BD',
num: '\u0023',
numero: '\u2116',
numsp: '\u2007',
nvap: '\u224D\u20D2',
nVDash: '\u22AF',
nVdash: '\u22AE',
nvDash: '\u22AD',
nvdash: '\u22AC',
nvge: '\u2265\u20D2',
nvgt: '\u003E\u20D2',
nvHarr: '\u2904',
nvinfin: '\u29DE',
nvlArr: '\u2902',
nvle: '\u2264\u20D2',
nvlt: '\u003C\u20D2',
nvltrie: '\u22B4\u20D2',
nvrArr: '\u2903',
nvrtrie: '\u22B5\u20D2',
nvsim: '\u223C\u20D2',
nwarhk: '\u2923',
nwArr: '\u21D6',
nwarr: '\u2196',
nwarrow: '\u2196',
nwnear: '\u2927',
Oacute: '\u00D3',
oacute: '\u00F3',
oast: '\u229B',
ocir: '\u229A',
Ocirc: '\u00D4',
ocirc: '\u00F4',
Ocy: '\u041E',
ocy: '\u043E',
odash: '\u229D',
Odblac: '\u0150',
odblac: '\u0151',
odiv: '\u2A38',
odot: '\u2299',
odsold: '\u29BC',
OElig: '\u0152',
oelig: '\u0153',
ofcir: '\u29BF',
Ofr: '\uD835\uDD12',
ofr: '\uD835\uDD2C',
ogon: '\u02DB',
Ograve: '\u00D2',
ograve: '\u00F2',
ogt: '\u29C1',
ohbar: '\u29B5',
ohm: '\u03A9',
oint: '\u222E',
olarr: '\u21BA',
olcir: '\u29BE',
olcross: '\u29BB',
oline: '\u203E',
olt: '\u29C0',
Omacr: '\u014C',
omacr: '\u014D',
Omega: '\u03A9',
omega: '\u03C9',
Omicron: '\u039F',
omicron: '\u03BF',
omid: '\u29B6',
ominus: '\u2296',
Oopf: '\uD835\uDD46',
oopf: '\uD835\uDD60',
opar: '\u29B7',
OpenCurlyDoubleQuote: '\u201C',
OpenCurlyQuote: '\u2018',
operp: '\u29B9',
oplus: '\u2295',
Or: '\u2A54',
or: '\u2228',
orarr: '\u21BB',
ord: '\u2A5D',
order: '\u2134',
orderof: '\u2134',
ordf: '\u00AA',
ordm: '\u00BA',
origof: '\u22B6',
oror: '\u2A56',
orslope: '\u2A57',
orv: '\u2A5B',
oS: '\u24C8',
Oscr: '\uD835\uDCAA',
oscr: '\u2134',
Oslash: '\u00D8',
oslash: '\u00F8',
osol: '\u2298',
Otilde: '\u00D5',
otilde: '\u00F5',
Otimes: '\u2A37',
otimes: '\u2297',
otimesas: '\u2A36',
Ouml: '\u00D6',
ouml: '\u00F6',
ovbar: '\u233D',
OverBar: '\u203E',
OverBrace: '\u23DE',
OverBracket: '\u23B4',
OverParenthesis: '\u23DC',
par: '\u2225',
para: '\u00B6',
parallel: '\u2225',
parsim: '\u2AF3',
parsl: '\u2AFD',
part: '\u2202',
PartialD: '\u2202',
Pcy: '\u041F',
pcy: '\u043F',
percnt: '\u0025',
period: '\u002E',
permil: '\u2030',
perp: '\u22A5',
pertenk: '\u2031',
Pfr: '\uD835\uDD13',
pfr: '\uD835\uDD2D',
Phi: '\u03A6',
phi: '\u03C6',
phiv: '\u03D5',
phmmat: '\u2133',
phone: '\u260E',
Pi: '\u03A0',
pi: '\u03C0',
pitchfork: '\u22D4',
piv: '\u03D6',
planck: '\u210F',
planckh: '\u210E',
plankv: '\u210F',
plus: '\u002B',
plusacir: '\u2A23',
plusb: '\u229E',
pluscir: '\u2A22',
plusdo: '\u2214',
plusdu: '\u2A25',
pluse: '\u2A72',
PlusMinus: '\u00B1',
plusmn: '\u00B1',
plussim: '\u2A26',
plustwo: '\u2A27',
pm: '\u00B1',
Poincareplane: '\u210C',
pointint: '\u2A15',
Popf: '\u2119',
popf: '\uD835\uDD61',
pound: '\u00A3',
Pr: '\u2ABB',
pr: '\u227A',
prap: '\u2AB7',
prcue: '\u227C',
prE: '\u2AB3',
pre: '\u2AAF',
prec: '\u227A',
precapprox: '\u2AB7',
preccurlyeq: '\u227C',
Precedes: '\u227A',
PrecedesEqual: '\u2AAF',
PrecedesSlantEqual: '\u227C',
PrecedesTilde: '\u227E',
preceq: '\u2AAF',
precnapprox: '\u2AB9',
precneqq: '\u2AB5',
precnsim: '\u22E8',
precsim: '\u227E',
Prime: '\u2033',
prime: '\u2032',
primes: '\u2119',
prnap: '\u2AB9',
prnE: '\u2AB5',
prnsim: '\u22E8',
prod: '\u220F',
Product: '\u220F',
profalar: '\u232E',
profline: '\u2312',
profsurf: '\u2313',
prop: '\u221D',
Proportion: '\u2237',
Proportional: '\u221D',
propto: '\u221D',
prsim: '\u227E',
prurel: '\u22B0',
Pscr: '\uD835\uDCAB',
pscr: '\uD835\uDCC5',
Psi: '\u03A8',
psi: '\u03C8',
puncsp: '\u2008',
Qfr: '\uD835\uDD14',
qfr: '\uD835\uDD2E',
qint: '\u2A0C',
Qopf: '\u211A',
qopf: '\uD835\uDD62',
qprime: '\u2057',
Qscr: '\uD835\uDCAC',
qscr: '\uD835\uDCC6',
quaternions: '\u210D',
quatint: '\u2A16',
quest: '\u003F',
questeq: '\u225F',
QUOT: '\u0022',
quot: '\u0022',
rAarr: '\u21DB',
race: '\u223D\u0331',
Racute: '\u0154',
racute: '\u0155',
radic: '\u221A',
raemptyv: '\u29B3',
Rang: '\u27EB',
rang: '\u27E9',
rangd: '\u2992',
range: '\u29A5',
rangle: '\u27E9',
raquo: '\u00BB',
Rarr: '\u21A0',
rArr: '\u21D2',
rarr: '\u2192',
rarrap: '\u2975',
rarrb: '\u21E5',
rarrbfs: '\u2920',
rarrc: '\u2933',
rarrfs: '\u291E',
rarrhk: '\u21AA',
rarrlp: '\u21AC',
rarrpl: '\u2945',
rarrsim: '\u2974',
Rarrtl: '\u2916',
rarrtl: '\u21A3',
rarrw: '\u219D',
rAtail: '\u291C',
ratail: '\u291A',
ratio: '\u2236',
rationals: '\u211A',
RBarr: '\u2910',
rBarr: '\u290F',
rbarr: '\u290D',
rbbrk: '\u2773',
rbrace: '\u007D',
rbrack: '\u005D',
rbrke: '\u298C',
rbrksld: '\u298E',
rbrkslu: '\u2990',
Rcaron: '\u0158',
rcaron: '\u0159',
Rcedil: '\u0156',
rcedil: '\u0157',
rceil: '\u2309',
rcub: '\u007D',
Rcy: '\u0420',
rcy: '\u0440',
rdca: '\u2937',
rdldhar: '\u2969',
rdquo: '\u201D',
rdquor: '\u201D',
rdsh: '\u21B3',
Re: '\u211C',
real: '\u211C',
realine: '\u211B',
realpart: '\u211C',
reals: '\u211D',
rect: '\u25AD',
REG: '\u00AE',
reg: '\u00AE',
ReverseElement: '\u220B',
ReverseEquilibrium: '\u21CB',
ReverseUpEquilibrium: '\u296F',
rfisht: '\u297D',
rfloor: '\u230B',
Rfr: '\u211C',
rfr: '\uD835\uDD2F',
rHar: '\u2964',
rhard: '\u21C1',
rharu: '\u21C0',
rharul: '\u296C',
Rho: '\u03A1',
rho: '\u03C1',
rhov: '\u03F1',
RightAngleBracket: '\u27E9',
RightArrow: '\u2192',
Rightarrow: '\u21D2',
rightarrow: '\u2192',
RightArrowBar: '\u21E5',
RightArrowLeftArrow: '\u21C4',
rightarrowtail: '\u21A3',
RightCeiling: '\u2309',
RightDoubleBracket: '\u27E7',
RightDownTeeVector: '\u295D',
RightDownVector: '\u21C2',
RightDownVectorBar: '\u2955',
RightFloor: '\u230B',
rightharpoondown: '\u21C1',
rightharpoonup: '\u21C0',
rightleftarrows: '\u21C4',
rightleftharpoons: '\u21CC',
rightrightarrows: '\u21C9',
rightsquigarrow: '\u219D',
RightTee: '\u22A2',
RightTeeArrow: '\u21A6',
RightTeeVector: '\u295B',
rightthreetimes: '\u22CC',
RightTriangle: '\u22B3',
RightTriangleBar: '\u29D0',
RightTriangleEqual: '\u22B5',
RightUpDownVector: '\u294F',
RightUpTeeVector: '\u295C',
RightUpVector: '\u21BE',
RightUpVectorBar: '\u2954',
RightVector: '\u21C0',
RightVectorBar: '\u2953',
ring: '\u02DA',
risingdotseq: '\u2253',
rlarr: '\u21C4',
rlhar: '\u21CC',
rlm: '\u200F',
rmoust: '\u23B1',
rmoustache: '\u23B1',
rnmid: '\u2AEE',
roang: '\u27ED',
roarr: '\u21FE',
robrk: '\u27E7',
ropar: '\u2986',
Ropf: '\u211D',
ropf: '\uD835\uDD63',
roplus: '\u2A2E',
rotimes: '\u2A35',
RoundImplies: '\u2970',
rpar: '\u0029',
rpargt: '\u2994',
rppolint: '\u2A12',
rrarr: '\u21C9',
Rrightarrow: '\u21DB',
rsaquo: '\u203A',
Rscr: '\u211B',
rscr: '\uD835\uDCC7',
Rsh: '\u21B1',
rsh: '\u21B1',
rsqb: '\u005D',
rsquo: '\u2019',
rsquor: '\u2019',
rthree: '\u22CC',
rtimes: '\u22CA',
rtri: '\u25B9',
rtrie: '\u22B5',
rtrif: '\u25B8',
rtriltri: '\u29CE',
RuleDelayed: '\u29F4',
ruluhar: '\u2968',
rx: '\u211E',
Sacute: '\u015A',
sacute: '\u015B',
sbquo: '\u201A',
Sc: '\u2ABC',
sc: '\u227B',
scap: '\u2AB8',
Scaron: '\u0160',
scaron: '\u0161',
sccue: '\u227D',
scE: '\u2AB4',
sce: '\u2AB0',
Scedil: '\u015E',
scedil: '\u015F',
Scirc: '\u015C',
scirc: '\u015D',
scnap: '\u2ABA',
scnE: '\u2AB6',
scnsim: '\u22E9',
scpolint: '\u2A13',
scsim: '\u227F',
Scy: '\u0421',
scy: '\u0441',
sdot: '\u22C5',
sdotb: '\u22A1',
sdote: '\u2A66',
searhk: '\u2925',
seArr: '\u21D8',
searr: '\u2198',
searrow: '\u2198',
sect: '\u00A7',
semi: '\u003B',
seswar: '\u2929',
setminus: '\u2216',
setmn: '\u2216',
sext: '\u2736',
Sfr: '\uD835\uDD16',
sfr: '\uD835\uDD30',
sfrown: '\u2322',
sharp: '\u266F',
SHCHcy: '\u0429',
shchcy: '\u0449',
SHcy: '\u0428',
shcy: '\u0448',
ShortDownArrow: '\u2193',
ShortLeftArrow: '\u2190',
shortmid: '\u2223',
shortparallel: '\u2225',
ShortRightArrow: '\u2192',
ShortUpArrow: '\u2191',
shy: '\u00AD',
Sigma: '\u03A3',
sigma: '\u03C3',
sigmaf: '\u03C2',
sigmav: '\u03C2',
sim: '\u223C',
simdot: '\u2A6A',
sime: '\u2243',
simeq: '\u2243',
simg: '\u2A9E',
simgE: '\u2AA0',
siml: '\u2A9D',
simlE: '\u2A9F',
simne: '\u2246',
simplus: '\u2A24',
simrarr: '\u2972',
slarr: '\u2190',
SmallCircle: '\u2218',
smallsetminus: '\u2216',
smashp: '\u2A33',
smeparsl: '\u29E4',
smid: '\u2223',
smile: '\u2323',
smt: '\u2AAA',
smte: '\u2AAC',
smtes: '\u2AAC\uFE00',
SOFTcy: '\u042C',
softcy: '\u044C',
sol: '\u002F',
solb: '\u29C4',
solbar: '\u233F',
Sopf: '\uD835\uDD4A',
sopf: '\uD835\uDD64',
spades: '\u2660',
spadesuit: '\u2660',
spar: '\u2225',
sqcap: '\u2293',
sqcaps: '\u2293\uFE00',
sqcup: '\u2294',
sqcups: '\u2294\uFE00',
Sqrt: '\u221A',
sqsub: '\u228F',
sqsube: '\u2291',
sqsubset: '\u228F',
sqsubseteq: '\u2291',
sqsup: '\u2290',
sqsupe: '\u2292',
sqsupset: '\u2290',
sqsupseteq: '\u2292',
squ: '\u25A1',
Square: '\u25A1',
square: '\u25A1',
SquareIntersection: '\u2293',
SquareSubset: '\u228F',
SquareSubsetEqual: '\u2291',
SquareSuperset: '\u2290',
SquareSupersetEqual: '\u2292',
SquareUnion: '\u2294',
squarf: '\u25AA',
squf: '\u25AA',
srarr: '\u2192',
Sscr: '\uD835\uDCAE',
sscr: '\uD835\uDCC8',
ssetmn: '\u2216',
ssmile: '\u2323',
sstarf: '\u22C6',
Star: '\u22C6',
star: '\u2606',
starf: '\u2605',
straightepsilon: '\u03F5',
straightphi: '\u03D5',
strns: '\u00AF',
Sub: '\u22D0',
sub: '\u2282',
subdot: '\u2ABD',
subE: '\u2AC5',
sube: '\u2286',
subedot: '\u2AC3',
submult: '\u2AC1',
subnE: '\u2ACB',
subne: '\u228A',
subplus: '\u2ABF',
subrarr: '\u2979',
Subset: '\u22D0',
subset: '\u2282',
subseteq: '\u2286',
subseteqq: '\u2AC5',
SubsetEqual: '\u2286',
subsetneq: '\u228A',
subsetneqq: '\u2ACB',
subsim: '\u2AC7',
subsub: '\u2AD5',
subsup: '\u2AD3',
succ: '\u227B',
succapprox: '\u2AB8',
succcurlyeq: '\u227D',
Succeeds: '\u227B',
SucceedsEqual: '\u2AB0',
SucceedsSlantEqual: '\u227D',
SucceedsTilde: '\u227F',
succeq: '\u2AB0',
succnapprox: '\u2ABA',
succneqq: '\u2AB6',
succnsim: '\u22E9',
succsim: '\u227F',
SuchThat: '\u220B',
Sum: '\u2211',
sum: '\u2211',
sung: '\u266A',
Sup: '\u22D1',
sup: '\u2283',
sup1: '\u00B9',
sup2: '\u00B2',
sup3: '\u00B3',
supdot: '\u2ABE',
supdsub: '\u2AD8',
supE: '\u2AC6',
supe: '\u2287',
supedot: '\u2AC4',
Superset: '\u2283',
SupersetEqual: '\u2287',
suphsol: '\u27C9',
suphsub: '\u2AD7',
suplarr: '\u297B',
supmult: '\u2AC2',
supnE: '\u2ACC',
supne: '\u228B',
supplus: '\u2AC0',
Supset: '\u22D1',
supset: '\u2283',
supseteq: '\u2287',
supseteqq: '\u2AC6',
supsetneq: '\u228B',
supsetneqq: '\u2ACC',
supsim: '\u2AC8',
supsub: '\u2AD4',
supsup: '\u2AD6',
swarhk: '\u2926',
swArr: '\u21D9',
swarr: '\u2199',
swarrow: '\u2199',
swnwar: '\u292A',
szlig: '\u00DF',
Tab: '\u0009',
target: '\u2316',
Tau: '\u03A4',
tau: '\u03C4',
tbrk: '\u23B4',
Tcaron: '\u0164',
tcaron: '\u0165',
Tcedil: '\u0162',
tcedil: '\u0163',
Tcy: '\u0422',
tcy: '\u0442',
tdot: '\u20DB',
telrec: '\u2315',
Tfr: '\uD835\uDD17',
tfr: '\uD835\uDD31',
there4: '\u2234',
Therefore: '\u2234',
therefore: '\u2234',
Theta: '\u0398',
theta: '\u03B8',
thetasym: '\u03D1',
thetav: '\u03D1',
thickapprox: '\u2248',
thicksim: '\u223C',
ThickSpace: '\u205F\u200A',
thinsp: '\u2009',
ThinSpace: '\u2009',
thkap: '\u2248',
thksim: '\u223C',
THORN: '\u00DE',
thorn: '\u00FE',
Tilde: '\u223C',
tilde: '\u02DC',
TildeEqual: '\u2243',
TildeFullEqual: '\u2245',
TildeTilde: '\u2248',
times: '\u00D7',
timesb: '\u22A0',
timesbar: '\u2A31',
timesd: '\u2A30',
tint: '\u222D',
toea: '\u2928',
top: '\u22A4',
topbot: '\u2336',
topcir: '\u2AF1',
Topf: '\uD835\uDD4B',
topf: '\uD835\uDD65',
topfork: '\u2ADA',
tosa: '\u2929',
tprime: '\u2034',
TRADE: '\u2122',
trade: '\u2122',
triangle: '\u25B5',
triangledown: '\u25BF',
triangleleft: '\u25C3',
trianglelefteq: '\u22B4',
triangleq: '\u225C',
triangleright: '\u25B9',
trianglerighteq: '\u22B5',
tridot: '\u25EC',
trie: '\u225C',
triminus: '\u2A3A',
TripleDot: '\u20DB',
triplus: '\u2A39',
trisb: '\u29CD',
tritime: '\u2A3B',
trpezium: '\u23E2',
Tscr: '\uD835\uDCAF',
tscr: '\uD835\uDCC9',
TScy: '\u0426',
tscy: '\u0446',
TSHcy: '\u040B',
tshcy: '\u045B',
Tstrok: '\u0166',
tstrok: '\u0167',
twixt: '\u226C',
twoheadleftarrow: '\u219E',
twoheadrightarrow: '\u21A0',
Uacute: '\u00DA',
uacute: '\u00FA',
Uarr: '\u219F',
uArr: '\u21D1',
uarr: '\u2191',
Uarrocir: '\u2949',
Ubrcy: '\u040E',
ubrcy: '\u045E',
Ubreve: '\u016C',
ubreve: '\u016D',
Ucirc: '\u00DB',
ucirc: '\u00FB',
Ucy: '\u0423',
ucy: '\u0443',
udarr: '\u21C5',
Udblac: '\u0170',
udblac: '\u0171',
udhar: '\u296E',
ufisht: '\u297E',
Ufr: '\uD835\uDD18',
ufr: '\uD835\uDD32',
Ugrave: '\u00D9',
ugrave: '\u00F9',
uHar: '\u2963',
uharl: '\u21BF',
uharr: '\u21BE',
uhblk: '\u2580',
ulcorn: '\u231C',
ulcorner: '\u231C',
ulcrop: '\u230F',
ultri: '\u25F8',
Umacr: '\u016A',
umacr: '\u016B',
uml: '\u00A8',
UnderBar: '\u005F',
UnderBrace: '\u23DF',
UnderBracket: '\u23B5',
UnderParenthesis: '\u23DD',
Union: '\u22C3',
UnionPlus: '\u228E',
Uogon: '\u0172',
uogon: '\u0173',
Uopf: '\uD835\uDD4C',
uopf: '\uD835\uDD66',
UpArrow: '\u2191',
Uparrow: '\u21D1',
uparrow: '\u2191',
UpArrowBar: '\u2912',
UpArrowDownArrow: '\u21C5',
UpDownArrow: '\u2195',
Updownarrow: '\u21D5',
updownarrow: '\u2195',
UpEquilibrium: '\u296E',
upharpoonleft: '\u21BF',
upharpoonright: '\u21BE',
uplus: '\u228E',
UpperLeftArrow: '\u2196',
UpperRightArrow: '\u2197',
Upsi: '\u03D2',
upsi: '\u03C5',
upsih: '\u03D2',
Upsilon: '\u03A5',
upsilon: '\u03C5',
UpTee: '\u22A5',
UpTeeArrow: '\u21A5',
upuparrows: '\u21C8',
urcorn: '\u231D',
urcorner: '\u231D',
urcrop: '\u230E',
Uring: '\u016E',
uring: '\u016F',
urtri: '\u25F9',
Uscr: '\uD835\uDCB0',
uscr: '\uD835\uDCCA',
utdot: '\u22F0',
Utilde: '\u0168',
utilde: '\u0169',
utri: '\u25B5',
utrif: '\u25B4',
uuarr: '\u21C8',
Uuml: '\u00DC',
uuml: '\u00FC',
uwangle: '\u29A7',
vangrt: '\u299C',
varepsilon: '\u03F5',
varkappa: '\u03F0',
varnothing: '\u2205',
varphi: '\u03D5',
varpi: '\u03D6',
varpropto: '\u221D',
vArr: '\u21D5',
varr: '\u2195',
varrho: '\u03F1',
varsigma: '\u03C2',
varsubsetneq: '\u228A\uFE00',
varsubsetneqq: '\u2ACB\uFE00',
varsupsetneq: '\u228B\uFE00',
varsupsetneqq: '\u2ACC\uFE00',
vartheta: '\u03D1',
vartriangleleft: '\u22B2',
vartriangleright: '\u22B3',
Vbar: '\u2AEB',
vBar: '\u2AE8',
vBarv: '\u2AE9',
Vcy: '\u0412',
vcy: '\u0432',
VDash: '\u22AB',
Vdash: '\u22A9',
vDash: '\u22A8',
vdash: '\u22A2',
Vdashl: '\u2AE6',
Vee: '\u22C1',
vee: '\u2228',
veebar: '\u22BB',
veeeq: '\u225A',
vellip: '\u22EE',
Verbar: '\u2016',
verbar: '\u007C',
Vert: '\u2016',
vert: '\u007C',
VerticalBar: '\u2223',
VerticalLine: '\u007C',
VerticalSeparator: '\u2758',
VerticalTilde: '\u2240',
VeryThinSpace: '\u200A',
Vfr: '\uD835\uDD19',
vfr: '\uD835\uDD33',
vltri: '\u22B2',
vnsub: '\u2282\u20D2',
vnsup: '\u2283\u20D2',
Vopf: '\uD835\uDD4D',
vopf: '\uD835\uDD67',
vprop: '\u221D',
vrtri: '\u22B3',
Vscr: '\uD835\uDCB1',
vscr: '\uD835\uDCCB',
vsubnE: '\u2ACB\uFE00',
vsubne: '\u228A\uFE00',
vsupnE: '\u2ACC\uFE00',
vsupne: '\u228B\uFE00',
Vvdash: '\u22AA',
vzigzag: '\u299A',
Wcirc: '\u0174',
wcirc: '\u0175',
wedbar: '\u2A5F',
Wedge: '\u22C0',
wedge: '\u2227',
wedgeq: '\u2259',
weierp: '\u2118',
Wfr: '\uD835\uDD1A',
wfr: '\uD835\uDD34',
Wopf: '\uD835\uDD4E',
wopf: '\uD835\uDD68',
wp: '\u2118',
wr: '\u2240',
wreath: '\u2240',
Wscr: '\uD835\uDCB2',
wscr: '\uD835\uDCCC',
xcap: '\u22C2',
xcirc: '\u25EF',
xcup: '\u22C3',
xdtri: '\u25BD',
Xfr: '\uD835\uDD1B',
xfr: '\uD835\uDD35',
xhArr: '\u27FA',
xharr: '\u27F7',
Xi: '\u039E',
xi: '\u03BE',
xlArr: '\u27F8',
xlarr: '\u27F5',
xmap: '\u27FC',
xnis: '\u22FB',
xodot: '\u2A00',
Xopf: '\uD835\uDD4F',
xopf: '\uD835\uDD69',
xoplus: '\u2A01',
xotime: '\u2A02',
xrArr: '\u27F9',
xrarr: '\u27F6',
Xscr: '\uD835\uDCB3',
xscr: '\uD835\uDCCD',
xsqcup: '\u2A06',
xuplus: '\u2A04',
xutri: '\u25B3',
xvee: '\u22C1',
xwedge: '\u22C0',
Yacute: '\u00DD',
yacute: '\u00FD',
YAcy: '\u042F',
yacy: '\u044F',
Ycirc: '\u0176',
ycirc: '\u0177',
Ycy: '\u042B',
ycy: '\u044B',
yen: '\u00A5',
Yfr: '\uD835\uDD1C',
yfr: '\uD835\uDD36',
YIcy: '\u0407',
yicy: '\u0457',
Yopf: '\uD835\uDD50',
yopf: '\uD835\uDD6A',
Yscr: '\uD835\uDCB4',
yscr: '\uD835\uDCCE',
YUcy: '\u042E',
yucy: '\u044E',
Yuml: '\u0178',
yuml: '\u00FF',
Zacute: '\u0179',
zacute: '\u017A',
Zcaron: '\u017D',
zcaron: '\u017E',
Zcy: '\u0417',
zcy: '\u0437',
Zdot: '\u017B',
zdot: '\u017C',
zeetrf: '\u2128',
ZeroWidthSpace: '\u200B',
Zeta: '\u0396',
zeta: '\u03B6',
Zfr: '\u2128',
zfr: '\uD835\uDD37',
ZHcy: '\u0416',
zhcy: '\u0436',
zigrarr: '\u21DD',
Zopf: '\u2124',
zopf: '\uD835\uDD6B',
Zscr: '\uD835\uDCB5',
zscr: '\uD835\uDCCF',
zwj: '\u200D',
zwnj: '\u200C'
});
/**
* @deprecated use `HTML_ENTITIES` instead
* @see HTML_ENTITIES
*/
exports.entityMap = exports.HTML_ENTITIES;
});
entities.XML_ENTITIES;
entities.HTML_ENTITIES;
entities.entityMap;
var NAMESPACE$1 = conventions.NAMESPACE;
//[4] NameStartChar ::= ":" | [A-Z] | "_" | [a-z] | [#xC0-#xD6] | [#xD8-#xF6] | [#xF8-#x2FF] | [#x370-#x37D] | [#x37F-#x1FFF] | [#x200C-#x200D] | [#x2070-#x218F] | [#x2C00-#x2FEF] | [#x3001-#xD7FF] | [#xF900-#xFDCF] | [#xFDF0-#xFFFD] | [#x10000-#xEFFFF]
//[4a] NameChar ::= NameStartChar | "-" | "." | [0-9] | #xB7 | [#x0300-#x036F] | [#x203F-#x2040]
//[5] Name ::= NameStartChar (NameChar)*
var nameStartChar = /[A-Z_a-z\xC0-\xD6\xD8-\xF6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]/; //\u10000-\uEFFFF
var nameChar = new RegExp("[\\-\\.0-9" + nameStartChar.source.slice(1, -1) + "\\u00B7\\u0300-\\u036F\\u203F-\\u2040]");
var tagNamePattern = new RegExp('^' + nameStartChar.source + nameChar.source + '*(?:\:' + nameStartChar.source + nameChar.source + '*)?$');
//var tagNamePattern = /^[a-zA-Z_][\w\-\.]*(?:\:[a-zA-Z_][\w\-\.]*)?$/
//var handlers = 'resolveEntity,getExternalSubset,characters,endDocument,endElement,endPrefixMapping,ignorableWhitespace,processingInstruction,setDocumentLocator,skippedEntity,startDocument,startElement,startPrefixMapping,notationDecl,unparsedEntityDecl,error,fatalError,warning,attributeDecl,elementDecl,externalEntityDecl,internalEntityDecl,comment,endCDATA,endDTD,endEntity,startCDATA,startDTD,startEntity'.split(',')
//S_TAG, S_ATTR, S_EQ, S_ATTR_NOQUOT_VALUE
//S_ATTR_SPACE, S_ATTR_END, S_TAG_SPACE, S_TAG_CLOSE
var S_TAG = 0; //tag name offerring
var S_ATTR = 1; //attr name offerring
var S_ATTR_SPACE = 2; //attr name end and space offer
var S_EQ = 3; //=space?
var S_ATTR_NOQUOT_VALUE = 4; //attr value(no quot value only)
var S_ATTR_END = 5; //attr value end and no space(quot end)
var S_TAG_SPACE = 6; //(attr value end || tag end ) && (space offer)
var S_TAG_CLOSE = 7; //closed el} truns - The Trun Run boxes to be parsed
* @param {Number|BigInt} baseMediaDecodeTime - base media decode time from tfdt
@see ISO-BMFF-12/2015, Section 8.8.12
* @param {Object} tfhd - The parsed Track Fragment Header
* @see inspect.parseTfhd
* @return {Object[]} the parsed samples
*
* @see ISO-BMFF-12/2015, Section 8.8.8
**/
var parseSamples = function (truns, baseMediaDecodeTime, tfhd) {
var currentDts = baseMediaDecodeTime;
var defaultSampleDuration = tfhd.defaultSampleDuration || 0;
var defaultSampleSize = tfhd.defaultSampleSize || 0;
var trackId = tfhd.trackId;
var allSamples = [];
truns.forEach(function (trun) {
// Note: We currently do not parse the sample table as well
// as the trun. It's possible some sources will require this.
// moov > trak > mdia > minf > stbl
var trackRun = parseTrun$1(trun);
var samples = trackRun.samples;
samples.forEach(function (sample) {
if (sample.duration === undefined) {
sample.duration = defaultSampleDuration;
}
if (sample.size === undefined) {
sample.size = defaultSampleSize;
}
sample.trackId = trackId;
sample.dts = currentDts;
if (sample.compositionTimeOffset === undefined) {
sample.compositionTimeOffset = 0;
}
if (typeof currentDts === 'bigint') {
sample.pts = currentDts + window$2.BigInt(sample.compositionTimeOffset);
currentDts += window$2.BigInt(sample.duration);
} else {
sample.pts = currentDts + sample.compositionTimeOffset;
currentDts += sample.duration;
}
});
allSamples = allSamples.concat(samples);
});
return allSamples;
};
/**
* Parses out caption nals from an FMP4 segment's video tracks.
*
* @param {Uint8Array} segment - The bytes of a single segment
* @param {Number} videoTrackId - The trackId of a video track in the segment
* @return {Object.} A mapping of video trackId to
* a list of seiNals found in that track
**/
var parseCaptionNals = function (segment, videoTrackId) {
// To get the samples
var trafs = findBox$1(segment, ['moof', 'traf']); // To get SEI NAL units
var mdats = findBox$1(segment, ['mdat']);
var captionNals = {};
var mdatTrafPairs = []; // Pair up each traf with a mdat as moofs and mdats are in pairs
mdats.forEach(function (mdat, index) {
var matchingTraf = trafs[index];
mdatTrafPairs.push({
mdat: mdat,
traf: matchingTraf
});
});
mdatTrafPairs.forEach(function (pair) {
var mdat = pair.mdat;
var traf = pair.traf;
var tfhd = findBox$1(traf, ['tfhd']); // Exactly 1 tfhd per traf
var headerInfo = parseTfhd$1(tfhd[0]);
var trackId = headerInfo.trackId;
var tfdt = findBox$1(traf, ['tfdt']); // Either 0 or 1 tfdt per traf
var baseMediaDecodeTime = tfdt.length > 0 ? parseTfdt$1(tfdt[0]).baseMediaDecodeTime : 0;
var truns = findBox$1(traf, ['trun']);
var samples;
var result; // Only parse video data for the chosen video track
if (videoTrackId === trackId && truns.length > 0) {
samples = parseSamples(truns, baseMediaDecodeTime, headerInfo);
result = findSeiNals(mdat, samples, trackId);
if (!captionNals[trackId]) {
captionNals[trackId] = {
seiNals: [],
logs: []
};
}
captionNals[trackId].seiNals = captionNals[trackId].seiNals.concat(result.seiNals);
captionNals[trackId].logs = captionNals[trackId].logs.concat(result.logs);
}
});
return captionNals;
};
/**
* Parses out inband captions from an MP4 container and returns
* caption objects that can be used by WebVTT and the TextTrack API.
* @see https://developer.mozilla.org/en-US/docs/Web/API/VTTCue
* @see https://developer.mozilla.org/en-US/docs/Web/API/TextTrack
* Assumes that `probe.getVideoTrackIds` and `probe.timescale` have been called first
*
* @param {Uint8Array} segment - The fmp4 segment containing embedded captions
* @param {Number} trackId - The id of the video track to parse
* @param {Number} timescale - The timescale for the video track from the init segment
*
* @return {?Object[]} parsedCaptions - A list of captions or null if no video tracks
* @return {Number} parsedCaptions[].startTime - The time to show the caption in seconds
* @return {Number} parsedCaptions[].endTime - The time to stop showing the caption in seconds
* @return {Object[]} parsedCaptions[].content - A list of individual caption segments
* @return {String} parsedCaptions[].content.text - The visible content of the caption segment
* @return {Number} parsedCaptions[].content.line - The line height from 1-15 for positioning of the caption segment
* @return {Number} parsedCaptions[].content.position - The column indent percentage for cue positioning from 10-80
**/
var parseEmbeddedCaptions = function (segment, trackId, timescale) {
var captionNals; // the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
if (trackId === null) {
return null;
}
captionNals = parseCaptionNals(segment, trackId);
var trackNals = captionNals[trackId] || {};
return {
seiNals: trackNals.seiNals,
logs: trackNals.logs,
timescale: timescale
};
};
/**
* Converts SEI NALUs into captions that can be used by video.js
**/
var CaptionParser = function () {
var isInitialized = false;
var captionStream; // Stores segments seen before trackId and timescale are set
var segmentCache; // Stores video track ID of the track being parsed
var trackId; // Stores the timescale of the track being parsed
var timescale; // Stores captions parsed so far
var parsedCaptions; // Stores whether we are receiving partial data or not
var parsingPartial;
/**
* A method to indicate whether a CaptionParser has been initalized
* @returns {Boolean}
**/
this.isInitialized = function () {
return isInitialized;
};
/**
* Initializes the underlying CaptionStream, SEI NAL parsing
* and management, and caption collection
**/
this.init = function (options) {
captionStream = new CaptionStream();
isInitialized = true;
parsingPartial = options ? options.isPartial : false; // Collect dispatched captions
captionStream.on('data', function (event) {
// Convert to seconds in the source's timescale
event.startTime = event.startPts / timescale;
event.endTime = event.endPts / timescale;
parsedCaptions.captions.push(event);
parsedCaptions.captionStreams[event.stream] = true;
});
captionStream.on('log', function (log) {
parsedCaptions.logs.push(log);
});
};
/**
* Determines if a new video track will be selected
* or if the timescale changed
* @return {Boolean}
**/
this.isNewInit = function (videoTrackIds, timescales) {
if (videoTrackIds && videoTrackIds.length === 0 || timescales && typeof timescales === 'object' && Object.keys(timescales).length === 0) {
return false;
}
return trackId !== videoTrackIds[0] || timescale !== timescales[trackId];
};
/**
* Parses out SEI captions and interacts with underlying
* CaptionStream to return dispatched captions
*
* @param {Uint8Array} segment - The fmp4 segment containing embedded captions
* @param {Number[]} videoTrackIds - A list of video tracks found in the init segment
* @param {Object.} timescales - The timescales found in the init segment
* @see parseEmbeddedCaptions
* @see m2ts/caption-stream.js
**/
this.parse = function (segment, videoTrackIds, timescales) {
var parsedData;
if (!this.isInitialized()) {
return null; // This is not likely to be a video segment
} else if (!videoTrackIds || !timescales) {
return null;
} else if (this.isNewInit(videoTrackIds, timescales)) {
// Use the first video track only as there is no
// mechanism to switch to other video tracks
trackId = videoTrackIds[0];
timescale = timescales[trackId]; // If an init segment has not been seen yet, hold onto segment
// data until we have one.
// the ISO-BMFF spec says that trackId can't be zero, but there's some broken content out there
} else if (trackId === null || !timescale) {
segmentCache.push(segment);
return null;
} // Now that a timescale and trackId is set, parse cached segments
while (segmentCache.length > 0) {
var cachedSegment = segmentCache.shift();
this.parse(cachedSegment, videoTrackIds, timescales);
}
parsedData = parseEmbeddedCaptions(segment, trackId, timescale);
if (parsedData && parsedData.logs) {
parsedCaptions.logs = parsedCaptions.logs.concat(parsedData.logs);
}
if (parsedData === null || !parsedData.seiNals) {
if (parsedCaptions.logs.length) {
return {
logs: parsedCaptions.logs,
captions: [],
captionStreams: []
};
}
return null;
}
this.pushNals(parsedData.seiNals); // Force the parsed captions to be dispatched
this.flushStream();
return parsedCaptions;
};
/**
* Pushes SEI NALUs onto CaptionStream
* @param {Object[]} nals - A list of SEI nals parsed using `parseCaptionNals`
* Assumes that `parseCaptionNals` has been called first
* @see m2ts/caption-stream.js
**/
this.pushNals = function (nals) {
if (!this.isInitialized() || !nals || nals.length === 0) {
return null;
}
nals.forEach(function (nal) {
captionStream.push(nal);
});
};
/**
* Flushes underlying CaptionStream to dispatch processed, displayable captions
* @see m2ts/caption-stream.js
**/
this.flushStream = function () {
if (!this.isInitialized()) {
return null;
}
if (!parsingPartial) {
captionStream.flush();
} else {
captionStream.partialFlush();
}
};
/**
* Reset caption buckets for new data
**/
this.clearParsedCaptions = function () {
parsedCaptions.captions = [];
parsedCaptions.captionStreams = {};
parsedCaptions.logs = [];
};
/**
* Resets underlying CaptionStream
* @see m2ts/caption-stream.js
**/
this.resetCaptionStream = function () {
if (!this.isInitialized()) {
return null;
}
captionStream.reset();
};
/**
* Convenience method to clear all captions flushed from the
* CaptionStream and still being parsed
* @see m2ts/caption-stream.js
**/
this.clearAllCaptions = function () {
this.clearParsedCaptions();
this.resetCaptionStream();
};
/**
* Reset caption parser
**/
this.reset = function () {
segmentCache = [];
trackId = null;
timescale = null;
if (!parsedCaptions) {
parsedCaptions = {
captions: [],
// CC1, CC2, CC3, CC4
captionStreams: {},
logs: []
};
} else {
this.clearParsedCaptions();
}
this.resetCaptionStream();
};
this.reset();
};
var captionParser = CaptionParser;
/**
* Returns the first string in the data array ending with a null char '\0'
* @param {UInt8} data
* @returns the string with the null char
*/
var uint8ToCString$1 = function (data) {
var index = 0;
var curChar = String.fromCharCode(data[index]);
var retString = '';
while (curChar !== '\0') {
retString += curChar;
index++;
curChar = String.fromCharCode(data[index]);
} // Add nullChar
retString += curChar;
return retString;
};
var string = {
uint8ToCString: uint8ToCString$1
};
var uint8ToCString = string.uint8ToCString;
var getUint64$1 = numbers.getUint64;
/**
* Based on: ISO/IEC 23009 Section: 5.10.3.3
* References:
* https://dashif-documents.azurewebsites.net/Events/master/event.html#emsg-format
* https://aomediacodec.github.io/id3-emsg/
*
* Takes emsg box data as a uint8 array and returns a emsg box object
* @param {UInt8Array} boxData data from emsg box
* @returns A parsed emsg box object
*/
var parseEmsgBox = function (boxData) {
// version + flags
var offset = 4;
var version = boxData[0];
var scheme_id_uri, value, timescale, presentation_time, presentation_time_delta, event_duration, id, message_data;
if (version === 0) {
scheme_id_uri = uint8ToCString(boxData.subarray(offset));
offset += scheme_id_uri.length;
value = uint8ToCString(boxData.subarray(offset));
offset += value.length;
var dv = new DataView(boxData.buffer);
timescale = dv.getUint32(offset);
offset += 4;
presentation_time_delta = dv.getUint32(offset);
offset += 4;
event_duration = dv.getUint32(offset);
offset += 4;
id = dv.getUint32(offset);
offset += 4;
} else if (version === 1) {
var dv = new DataView(boxData.buffer);
timescale = dv.getUint32(offset);
offset += 4;
presentation_time = getUint64$1(boxData.subarray(offset));
offset += 8;
event_duration = dv.getUint32(offset);
offset += 4;
id = dv.getUint32(offset);
offset += 4;
scheme_id_uri = uint8ToCString(boxData.subarray(offset));
offset += scheme_id_uri.length;
value = uint8ToCString(boxData.subarray(offset));
offset += value.length;
}
message_data = new Uint8Array(boxData.subarray(offset, boxData.byteLength));
var emsgBox = {
scheme_id_uri,
value,
// if timescale is undefined or 0 set to 1
timescale: timescale ? timescale : 1,
presentation_time,
presentation_time_delta,
event_duration,
id,
message_data
};
return isValidEmsgBox(version, emsgBox) ? emsgBox : undefined;
};
/**
* Scales a presentation time or time delta with an offset with a provided timescale
* @param {number} presentationTime
* @param {number} timescale
* @param {number} timeDelta
* @param {number} offset
* @returns the scaled time as a number
*/
var scaleTime = function (presentationTime, timescale, timeDelta, offset) {
return presentationTime || presentationTime === 0 ? presentationTime / timescale : offset + timeDelta / timescale;
};
/**
* Checks the emsg box data for validity based on the version
* @param {number} version of the emsg box to validate
* @param {Object} emsg the emsg data to validate
* @returns if the box is valid as a boolean
*/
var isValidEmsgBox = function (version, emsg) {
var hasScheme = emsg.scheme_id_uri !== '\0';
var isValidV0Box = version === 0 && isDefined(emsg.presentation_time_delta) && hasScheme;
var isValidV1Box = version === 1 && isDefined(emsg.presentation_time) && hasScheme; // Only valid versions of emsg are 0 and 1
return !(version > 1) && isValidV0Box || isValidV1Box;
}; // Utility function to check if an object is defined
var isDefined = function (data) {
return data !== undefined || data !== null;
};
var emsg$1 = {
parseEmsgBox: parseEmsgBox,
scaleTime: scaleTime
};
/**
* mux.js
*
* Copyright (c) Brightcove
* Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
*
* Utilities to detect basic properties and metadata about MP4s.
*/
var toUnsigned = bin.toUnsigned;
var toHexString = bin.toHexString;
var findBox = findBox_1;
var parseType$1 = parseType_1;
var emsg = emsg$1;
var parseTfhd = parseTfhd$2;
var parseTrun = parseTrun$2;
var parseTfdt = parseTfdt$2;
var getUint64 = numbers.getUint64;
var timescale, startTime, compositionStartTime, getVideoTrackIds, getTracks, getTimescaleFromMediaHeader, getEmsgID3;
var window$1 = window_1;
var parseId3Frames = parseId3.parseId3Frames;
/**
* Parses an MP4 initialization segment and extracts the timescale
* values for any declared tracks. Timescale values indicate the
* number of clock ticks per second to assume for time-based values
* elsewhere in the MP4.
*
* To determine the start time of an MP4, you need two pieces of
* information: the timescale unit and the earliest base media decode
* time. Multiple timescales can be specified within an MP4 but the
* base media decode time is always expressed in the timescale from
* the media header box for the track:
* ```
* moov > trak > mdia > mdhd.timescale
* ```
* @param init {Uint8Array} the bytes of the init segment
* @return {object} a hash of track ids to timescale values or null if
* the init segment is malformed.
*/
timescale = function (init) {
var result = {},
traks = findBox(init, ['moov', 'trak']); // mdhd timescale
return traks.reduce(function (result, trak) {
var tkhd, version, index, id, mdhd;
tkhd = findBox(trak, ['tkhd'])[0];
if (!tkhd) {
return null;
}
version = tkhd[0];
index = version === 0 ? 12 : 20;
id = toUnsigned(tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3]);
mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
if (!mdhd) {
return null;
}
version = mdhd[0];
index = version === 0 ? 12 : 20;
result[id] = toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
return result;
}, result);
};
/**
* Determine the base media decode start time, in seconds, for an MP4
* fragment. If multiple fragments are specified, the earliest time is
* returned.
*
* The base media decode time can be parsed from track fragment
* metadata:
* ```
* moof > traf > tfdt.baseMediaDecodeTime
* ```
* It requires the timescale value from the mdhd to interpret.
*
* @param timescale {object} a hash of track ids to timescale values.
* @return {number} the earliest base media decode start time for the
* fragment, in seconds
*/
startTime = function (timescale, fragment) {
var trafs; // we need info from two childrend of each track fragment box
trafs = findBox(fragment, ['moof', 'traf']); // determine the start times for each track
var lowestTime = trafs.reduce(function (acc, traf) {
var tfhd = findBox(traf, ['tfhd'])[0]; // get the track id from the tfhd
var id = toUnsigned(tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7]); // assume a 90kHz clock if no timescale was specified
var scale = timescale[id] || 90e3; // get the base media decode time from the tfdt
var tfdt = findBox(traf, ['tfdt'])[0];
var dv = new DataView(tfdt.buffer, tfdt.byteOffset, tfdt.byteLength);
var baseTime; // version 1 is 64 bit
if (tfdt[0] === 1) {
baseTime = getUint64(tfdt.subarray(4, 12));
} else {
baseTime = dv.getUint32(4);
} // convert base time to seconds if it is a valid number.
let seconds;
if (typeof baseTime === 'bigint') {
seconds = baseTime / window$1.BigInt(scale);
} else if (typeof baseTime === 'number' && !isNaN(baseTime)) {
seconds = baseTime / scale;
}
if (seconds < Number.MAX_SAFE_INTEGER) {
seconds = Number(seconds);
}
if (seconds < acc) {
acc = seconds;
}
return acc;
}, Infinity);
return typeof lowestTime === 'bigint' || isFinite(lowestTime) ? lowestTime : 0;
};
/**
* Determine the composition start, in seconds, for an MP4
* fragment.
*
* The composition start time of a fragment can be calculated using the base
* media decode time, composition time offset, and timescale, as follows:
*
* compositionStartTime = (baseMediaDecodeTime + compositionTimeOffset) / timescale
*
* All of the aforementioned information is contained within a media fragment's
* `traf` box, except for timescale info, which comes from the initialization
* segment, so a track id (also contained within a `traf`) is also necessary to
* associate it with a timescale
*
*
* @param timescales {object} - a hash of track ids to timescale values.
* @param fragment {Unit8Array} - the bytes of a media segment
* @return {number} the composition start time for the fragment, in seconds
**/
compositionStartTime = function (timescales, fragment) {
var trafBoxes = findBox(fragment, ['moof', 'traf']);
var baseMediaDecodeTime = 0;
var compositionTimeOffset = 0;
var trackId;
if (trafBoxes && trafBoxes.length) {
// The spec states that track run samples contained within a `traf` box are contiguous, but
// it does not explicitly state whether the `traf` boxes themselves are contiguous.
// We will assume that they are, so we only need the first to calculate start time.
var tfhd = findBox(trafBoxes[0], ['tfhd'])[0];
var trun = findBox(trafBoxes[0], ['trun'])[0];
var tfdt = findBox(trafBoxes[0], ['tfdt'])[0];
if (tfhd) {
var parsedTfhd = parseTfhd(tfhd);
trackId = parsedTfhd.trackId;
}
if (tfdt) {
var parsedTfdt = parseTfdt(tfdt);
baseMediaDecodeTime = parsedTfdt.baseMediaDecodeTime;
}
if (trun) {
var parsedTrun = parseTrun(trun);
if (parsedTrun.samples && parsedTrun.samples.length) {
compositionTimeOffset = parsedTrun.samples[0].compositionTimeOffset || 0;
}
}
} // Get timescale for this specific track. Assume a 90kHz clock if no timescale was
// specified.
var timescale = timescales[trackId] || 90e3; // return the composition start time, in seconds
if (typeof baseMediaDecodeTime === 'bigint') {
compositionTimeOffset = window$1.BigInt(compositionTimeOffset);
timescale = window$1.BigInt(timescale);
}
var result = (baseMediaDecodeTime + compositionTimeOffset) / timescale;
if (typeof result === 'bigint' && result < Number.MAX_SAFE_INTEGER) {
result = Number(result);
}
return result;
};
/**
* Find the trackIds of the video tracks in this source.
* Found by parsing the Handler Reference and Track Header Boxes:
* moov > trak > mdia > hdlr
* moov > trak > tkhd
*
* @param {Uint8Array} init - The bytes of the init segment for this source
* @return {Number[]} A list of trackIds
*
* @see ISO-BMFF-12/2015, Section 8.4.3
**/
getVideoTrackIds = function (init) {
var traks = findBox(init, ['moov', 'trak']);
var videoTrackIds = [];
traks.forEach(function (trak) {
var hdlrs = findBox(trak, ['mdia', 'hdlr']);
var tkhds = findBox(trak, ['tkhd']);
hdlrs.forEach(function (hdlr, index) {
var handlerType = parseType$1(hdlr.subarray(8, 12));
var tkhd = tkhds[index];
var view;
var version;
var trackId;
if (handlerType === 'vide') {
view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
version = view.getUint8(0);
trackId = version === 0 ? view.getUint32(12) : view.getUint32(20);
videoTrackIds.push(trackId);
}
});
});
return videoTrackIds;
};
getTimescaleFromMediaHeader = function (mdhd) {
// mdhd is a FullBox, meaning it will have its own version as the first byte
var version = mdhd[0];
var index = version === 0 ? 12 : 20;
return toUnsigned(mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3]);
};
/**
* Get all the video, audio, and hint tracks from a non fragmented
* mp4 segment
*/
getTracks = function (init) {
var traks = findBox(init, ['moov', 'trak']);
var tracks = [];
traks.forEach(function (trak) {
var track = {};
var tkhd = findBox(trak, ['tkhd'])[0];
var view, tkhdVersion; // id
if (tkhd) {
view = new DataView(tkhd.buffer, tkhd.byteOffset, tkhd.byteLength);
tkhdVersion = view.getUint8(0);
track.id = tkhdVersion === 0 ? view.getUint32(12) : view.getUint32(20);
}
var hdlr = findBox(trak, ['mdia', 'hdlr'])[0]; // type
if (hdlr) {
var type = parseType$1(hdlr.subarray(8, 12));
if (type === 'vide') {
track.type = 'video';
} else if (type === 'soun') {
track.type = 'audio';
} else {
track.type = type;
}
} // codec
var stsd = findBox(trak, ['mdia', 'minf', 'stbl', 'stsd'])[0];
if (stsd) {
var sampleDescriptions = stsd.subarray(8); // gives the codec type string
track.codec = parseType$1(sampleDescriptions.subarray(4, 8));
var codecBox = findBox(sampleDescriptions, [track.codec])[0];
var codecConfig, codecConfigType;
if (codecBox) {
// https://tools.ietf.org/html/rfc6381#section-3.3
if (/^[asm]vc[1-9]$/i.test(track.codec)) {
// we don't need anything but the "config" parameter of the
// avc1 codecBox
codecConfig = codecBox.subarray(78);
codecConfigType = parseType$1(codecConfig.subarray(4, 8));
if (codecConfigType === 'avcC' && codecConfig.length > 11) {
track.codec += '.'; // left padded with zeroes for single digit hex
// profile idc
track.codec += toHexString(codecConfig[9]); // the byte containing the constraint_set flags
track.codec += toHexString(codecConfig[10]); // level idc
track.codec += toHexString(codecConfig[11]);
} else {
// TODO: show a warning that we couldn't parse the codec
// and are using the default
track.codec = 'avc1.4d400d';
}
} else if (/^mp4[a,v]$/i.test(track.codec)) {
// we do not need anything but the streamDescriptor of the mp4a codecBox
codecConfig = codecBox.subarray(28);
codecConfigType = parseType$1(codecConfig.subarray(4, 8));
if (codecConfigType === 'esds' && codecConfig.length > 20 && codecConfig[19] !== 0) {
track.codec += '.' + toHexString(codecConfig[19]); // this value is only a single digit
track.codec += '.' + toHexString(codecConfig[20] >>> 2 & 0x3f).replace(/^0/, '');
} else {
// TODO: show a warning that we couldn't parse the codec
// and are using the default
track.codec = 'mp4a.40.2';
}
} else {
// flac, opus, etc
track.codec = track.codec.toLowerCase();
}
}
}
var mdhd = findBox(trak, ['mdia', 'mdhd'])[0];
if (mdhd) {
track.timescale = getTimescaleFromMediaHeader(mdhd);
}
tracks.push(track);
});
return tracks;
};
/**
* Returns an array of emsg ID3 data from the provided segmentData.
* An offset can also be provided as the Latest Arrival Time to calculate
* the Event Start Time of v0 EMSG boxes.
* See: https://dashif-documents.azurewebsites.net/Events/master/event.html#Inband-event-timing
*
* @param {Uint8Array} segmentData the segment byte array.
* @param {number} offset the segment start time or Latest Arrival Time,
* @return {Object[]} an array of ID3 parsed from EMSG boxes
*/
getEmsgID3 = function (segmentData, offset = 0) {
var emsgBoxes = findBox(segmentData, ['emsg']);
return emsgBoxes.map(data => {
var parsedBox = emsg.parseEmsgBox(new Uint8Array(data));
var parsedId3Frames = parseId3Frames(parsedBox.message_data);
return {
cueTime: emsg.scaleTime(parsedBox.presentation_time, parsedBox.timescale, parsedBox.presentation_time_delta, offset),
duration: emsg.scaleTime(parsedBox.event_duration, parsedBox.timescale),
frames: parsedId3Frames
};
});
};
var probe$2 = {
// export mp4 inspector's findBox and parseType for backwards compatibility
findBox: findBox,
parseType: parseType$1,
timescale: timescale,
startTime: startTime,
compositionStartTime: compositionStartTime,
videoTrackIds: getVideoTrackIds,
tracks: getTracks,
getTimescaleFromMediaHeader: getTimescaleFromMediaHeader,
getEmsgID3: getEmsgID3
};
/**
* mux.js
*
* Copyright (c) Brightcove
* Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
*
* Utilities to detect basic properties and metadata about TS Segments.
*/
var StreamTypes$1 = streamTypes;
var parsePid = function (packet) {
var pid = packet[1] & 0x1f;
pid <<= 8;
pid |= packet[2];
return pid;
};
var parsePayloadUnitStartIndicator = function (packet) {
return !!(packet[1] & 0x40);
};
var parseAdaptionField = function (packet) {
var offset = 0; // if an adaption field is present, its length is specified by the
// fifth byte of the TS packet header. The adaptation field is
// used to add stuffing to PES packets that don't fill a complete
// TS packet, and to specify some forms of timing and control data
// that we do not currently use.
if ((packet[3] & 0x30) >>> 4 > 0x01) {
offset += packet[4] + 1;
}
return offset;
};
var parseType = function (packet, pmtPid) {
var pid = parsePid(packet);
if (pid === 0) {
return 'pat';
} else if (pid === pmtPid) {
return 'pmt';
} else if (pmtPid) {
return 'pes';
}
return null;
};
var parsePat = function (packet) {
var pusi = parsePayloadUnitStartIndicator(packet);
var offset = 4 + parseAdaptionField(packet);
if (pusi) {
offset += packet[offset] + 1;
}
return (packet[offset + 10] & 0x1f) << 8 | packet[offset + 11];
};
var parsePmt = function (packet) {
var programMapTable = {};
var pusi = parsePayloadUnitStartIndicator(packet);
var payloadOffset = 4 + parseAdaptionField(packet);
if (pusi) {
payloadOffset += packet[payloadOffset] + 1;
} // PMTs can be sent ahead of the time when they should actually
// take effect. We don't believe this should ever be the case
// for HLS but we'll ignore "forward" PMT declarations if we see
// them. Future PMT declarations have the current_next_indicator
// set to zero.
if (!(packet[payloadOffset + 5] & 0x01)) {
return;
}
var sectionLength, tableEnd, programInfoLength; // the mapping table ends at the end of the current section
sectionLength = (packet[payloadOffset + 1] & 0x0f) << 8 | packet[payloadOffset + 2];
tableEnd = 3 + sectionLength - 4; // to determine where the table is, we have to figure out how
// long the program info descriptors are
programInfoLength = (packet[payloadOffset + 10] & 0x0f) << 8 | packet[payloadOffset + 11]; // advance the offset to the first entry in the mapping table
var offset = 12 + programInfoLength;
while (offset < tableEnd) {
var i = payloadOffset + offset; // add an entry that maps the elementary_pid to the stream_type
programMapTable[(packet[i + 1] & 0x1F) << 8 | packet[i + 2]] = packet[i]; // move to the next table entry
// skip past the elementary stream descriptors, if present
offset += ((packet[i + 3] & 0x0F) << 8 | packet[i + 4]) + 5;
}
return programMapTable;
};
var parsePesType = function (packet, programMapTable) {
var pid = parsePid(packet);
var type = programMapTable[pid];
switch (type) {
case StreamTypes$1.H264_STREAM_TYPE:
return 'video';
case StreamTypes$1.ADTS_STREAM_TYPE:
return 'audio';
case StreamTypes$1.METADATA_STREAM_TYPE:
return 'timed-metadata';
default:
return null;
}
};
var parsePesTime = function (packet) {
var pusi = parsePayloadUnitStartIndicator(packet);
if (!pusi) {
return null;
}
var offset = 4 + parseAdaptionField(packet);
if (offset >= packet.byteLength) {
// From the H 222.0 MPEG-TS spec
// "For transport stream packets carrying PES packets, stuffing is needed when there
// is insufficient PES packet data to completely fill the transport stream packet
// payload bytes. Stuffing is accomplished by defining an adaptation field longer than
// the sum of the lengths of the data elements in it, so that the payload bytes
// remaining after the adaptation field exactly accommodates the available PES packet
// data."
//
// If the offset is >= the length of the packet, then the packet contains no data
// and instead is just adaption field stuffing bytes
return null;
}
var pes = null;
var ptsDtsFlags; // PES packets may be annotated with a PTS value, or a PTS value
// and a DTS value. Determine what combination of values is
// available to work with.
ptsDtsFlags = packet[offset + 7]; // PTS and DTS are normally stored as a 33-bit number. Javascript
// performs all bitwise operations on 32-bit integers but javascript
// supports a much greater range (52-bits) of integer using standard
// mathematical operations.
// We construct a 31-bit value using bitwise operators over the 31
// most significant bits and then multiply by 4 (equal to a left-shift
// of 2) before we add the final 2 least significant bits of the
// timestamp (equal to an OR.)
if (ptsDtsFlags & 0xC0) {
pes = {}; // the PTS and DTS are not written out directly. For information
// on how they are encoded, see
// http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
pes.pts = (packet[offset + 9] & 0x0E) << 27 | (packet[offset + 10] & 0xFF) << 20 | (packet[offset + 11] & 0xFE) << 12 | (packet[offset + 12] & 0xFF) << 5 | (packet[offset + 13] & 0xFE) >>> 3;
pes.pts *= 4; // Left shift by 2
pes.pts += (packet[offset + 13] & 0x06) >>> 1; // OR by the two LSBs
pes.dts = pes.pts;
if (ptsDtsFlags & 0x40) {
pes.dts = (packet[offset + 14] & 0x0E) << 27 | (packet[offset + 15] & 0xFF) << 20 | (packet[offset + 16] & 0xFE) << 12 | (packet[offset + 17] & 0xFF) << 5 | (packet[offset + 18] & 0xFE) >>> 3;
pes.dts *= 4; // Left shift by 2
pes.dts += (packet[offset + 18] & 0x06) >>> 1; // OR by the two LSBs
}
}
return pes;
};
var parseNalUnitType = function (type) {
switch (type) {
case 0x05:
return 'slice_layer_without_partitioning_rbsp_idr';
case 0x06:
return 'sei_rbsp';
case 0x07:
return 'seq_parameter_set_rbsp';
case 0x08:
return 'pic_parameter_set_rbsp';
case 0x09:
return 'access_unit_delimiter_rbsp';
default:
return null;
}
};
var videoPacketContainsKeyFrame = function (packet) {
var offset = 4 + parseAdaptionField(packet);
var frameBuffer = packet.subarray(offset);
var frameI = 0;
var frameSyncPoint = 0;
var foundKeyFrame = false;
var nalType; // advance the sync point to a NAL start, if necessary
for (; frameSyncPoint < frameBuffer.byteLength - 3; frameSyncPoint++) {
if (frameBuffer[frameSyncPoint + 2] === 1) {
// the sync point is properly aligned
frameI = frameSyncPoint + 5;
break;
}
}
while (frameI < frameBuffer.byteLength) {
// look at the current byte to determine if we've hit the end of
// a NAL unit boundary
switch (frameBuffer[frameI]) {
case 0:
// skip past non-sync sequences
if (frameBuffer[frameI - 1] !== 0) {
frameI += 2;
break;
} else if (frameBuffer[frameI - 2] !== 0) {
frameI++;
break;
}
if (frameSyncPoint + 3 !== frameI - 2) {
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
} // drop trailing zeroes
do {
frameI++;
} while (frameBuffer[frameI] !== 1 && frameI < frameBuffer.length);
frameSyncPoint = frameI - 2;
frameI += 3;
break;
case 1:
// skip past non-sync sequences
if (frameBuffer[frameI - 1] !== 0 || frameBuffer[frameI - 2] !== 0) {
frameI += 3;
break;
}
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
frameSyncPoint = frameI - 2;
frameI += 3;
break;
default:
// the current byte isn't a one or zero, so it cannot be part
// of a sync sequence
frameI += 3;
break;
}
}
frameBuffer = frameBuffer.subarray(frameSyncPoint);
frameI -= frameSyncPoint;
frameSyncPoint = 0; // parse the final nal
if (frameBuffer && frameBuffer.byteLength > 3) {
nalType = parseNalUnitType(frameBuffer[frameSyncPoint + 3] & 0x1f);
if (nalType === 'slice_layer_without_partitioning_rbsp_idr') {
foundKeyFrame = true;
}
}
return foundKeyFrame;
};
var probe$1 = {
parseType: parseType,
parsePat: parsePat,
parsePmt: parsePmt,
parsePayloadUnitStartIndicator: parsePayloadUnitStartIndicator,
parsePesType: parsePesType,
parsePesTime: parsePesTime,
videoPacketContainsKeyFrame: videoPacketContainsKeyFrame
};
/**
* mux.js
*
* Copyright (c) Brightcove
* Licensed Apache-2.0 https://github.com/videojs/mux.js/blob/master/LICENSE
*
* Parse mpeg2 transport stream packets to extract basic timing information
*/
var StreamTypes = streamTypes;
var handleRollover = timestampRolloverStream.handleRollover;
var probe = {};
probe.ts = probe$1;
probe.aac = utils;
var ONE_SECOND_IN_TS = clock$2.ONE_SECOND_IN_TS;
var MP2T_PACKET_LENGTH = 188,
// bytes
SYNC_BYTE = 0x47;
/**
* walks through segment data looking for pat and pmt packets to parse out
* program map table information
*/
var parsePsi_ = function (bytes, pmt) {
var startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet,
type;
while (endIndex < bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pat':
pmt.pid = probe.ts.parsePat(packet);
break;
case 'pmt':
var table = probe.ts.parsePmt(packet);
pmt.table = pmt.table || {};
Object.keys(table).forEach(function (key) {
pmt.table[key] = table[key];
});
break;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
} // If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
}
};
/**
* walks through the segment data from the start and end to get timing information
* for the first and last audio pes packets
*/
var parseAudioPes_ = function (bytes, pmt, result) {
var startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet,
type,
pesType,
pusi,
parsed;
var endLoop = false; // Start walking from start of segment to get first audio packet
while (endIndex <= bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'audio' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'audio';
result.audio.push(parsed);
endLoop = true;
}
}
break;
}
if (endLoop) {
break;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
} // If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
} // Start walking from end of segment to get last audio packet
endIndex = bytes.byteLength;
startIndex = endIndex - MP2T_PACKET_LENGTH;
endLoop = false;
while (startIndex >= 0) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && (bytes[endIndex] === SYNC_BYTE || endIndex === bytes.byteLength)) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'audio' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'audio';
result.audio.push(parsed);
endLoop = true;
}
}
break;
}
if (endLoop) {
break;
}
startIndex -= MP2T_PACKET_LENGTH;
endIndex -= MP2T_PACKET_LENGTH;
continue;
} // If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex--;
endIndex--;
}
};
/**
* walks through the segment data from the start and end to get timing information
* for the first and last video pes packets as well as timing information for the first
* key frame.
*/
var parseVideoPes_ = function (bytes, pmt, result) {
var startIndex = 0,
endIndex = MP2T_PACKET_LENGTH,
packet,
type,
pesType,
pusi,
parsed,
frame,
i,
pes;
var endLoop = false;
var currentFrame = {
data: [],
size: 0
}; // Start walking from start of segment to get first video packet
while (endIndex < bytes.byteLength) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'video') {
if (pusi && !endLoop) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'video';
result.video.push(parsed);
endLoop = true;
}
}
if (!result.firstKeyFrame) {
if (pusi) {
if (currentFrame.size !== 0) {
frame = new Uint8Array(currentFrame.size);
i = 0;
while (currentFrame.data.length) {
pes = currentFrame.data.shift();
frame.set(pes, i);
i += pes.byteLength;
}
if (probe.ts.videoPacketContainsKeyFrame(frame)) {
var firstKeyFrame = probe.ts.parsePesTime(frame); // PTS/DTS may not be available. Simply *not* setting
// the keyframe seems to work fine with HLS playback
// and definitely preferable to a crash with TypeError...
if (firstKeyFrame) {
result.firstKeyFrame = firstKeyFrame;
result.firstKeyFrame.type = 'video';
} else {
// eslint-disable-next-line
console.warn('Failed to extract PTS/DTS from PES at first keyframe. ' + 'This could be an unusual TS segment, or else mux.js did not ' + 'parse your TS segment correctly. If you know your TS ' + 'segments do contain PTS/DTS on keyframes please file a bug ' + 'report! You can try ffprobe to double check for yourself.');
}
}
currentFrame.size = 0;
}
}
currentFrame.data.push(packet);
currentFrame.size += packet.byteLength;
}
}
break;
}
if (endLoop && result.firstKeyFrame) {
break;
}
startIndex += MP2T_PACKET_LENGTH;
endIndex += MP2T_PACKET_LENGTH;
continue;
} // If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex++;
endIndex++;
} // Start walking from end of segment to get last video packet
endIndex = bytes.byteLength;
startIndex = endIndex - MP2T_PACKET_LENGTH;
endLoop = false;
while (startIndex >= 0) {
// Look for a pair of start and end sync bytes in the data..
if (bytes[startIndex] === SYNC_BYTE && bytes[endIndex] === SYNC_BYTE) {
// We found a packet
packet = bytes.subarray(startIndex, endIndex);
type = probe.ts.parseType(packet, pmt.pid);
switch (type) {
case 'pes':
pesType = probe.ts.parsePesType(packet, pmt.table);
pusi = probe.ts.parsePayloadUnitStartIndicator(packet);
if (pesType === 'video' && pusi) {
parsed = probe.ts.parsePesTime(packet);
if (parsed) {
parsed.type = 'video';
result.video.push(parsed);
endLoop = true;
}
}
break;
}
if (endLoop) {
break;
}
startIndex -= MP2T_PACKET_LENGTH;
endIndex -= MP2T_PACKET_LENGTH;
continue;
} // If we get here, we have somehow become de-synchronized and we need to step
// forward one byte at a time until we find a pair of sync bytes that denote
// a packet
startIndex--;
endIndex--;
}
};
/**
* Adjusts the timestamp information for the segment to account for
* rollover and convert to seconds based on pes packet timescale (90khz clock)
*/
var adjustTimestamp_ = function (segmentInfo, baseTimestamp) {
if (segmentInfo.audio && segmentInfo.audio.length) {
var audioBaseTimestamp = baseTimestamp;
if (typeof audioBaseTimestamp === 'undefined' || isNaN(audioBaseTimestamp)) {
audioBaseTimestamp = segmentInfo.audio[0].dts;
}
segmentInfo.audio.forEach(function (info) {
info.dts = handleRollover(info.dts, audioBaseTimestamp);
info.pts = handleRollover(info.pts, audioBaseTimestamp); // time in seconds
info.dtsTime = info.dts / ONE_SECOND_IN_TS;
info.ptsTime = info.pts / ONE_SECOND_IN_TS;
});
}
if (segmentInfo.video && segmentInfo.video.length) {
var videoBaseTimestamp = baseTimestamp;
if (typeof videoBaseTimestamp === 'undefined' || isNaN(videoBaseTimestamp)) {
videoBaseTimestamp = segmentInfo.video[0].dts;
}
segmentInfo.video.forEach(function (info) {
info.dts = handleRollover(info.dts, videoBaseTimestamp);
info.pts = handleRollover(info.pts, videoBaseTimestamp); // time in seconds
info.dtsTime = info.dts / ONE_SECOND_IN_TS;
info.ptsTime = info.pts / ONE_SECOND_IN_TS;
});
if (segmentInfo.firstKeyFrame) {
var frame = segmentInfo.firstKeyFrame;
frame.dts = handleRollover(frame.dts, videoBaseTimestamp);
frame.pts = handleRollover(frame.pts, videoBaseTimestamp); // time in seconds
frame.dtsTime = frame.dts / ONE_SECOND_IN_TS;
frame.ptsTime = frame.pts / ONE_SECOND_IN_TS;
}
}
};
/**
* inspects the aac data stream for start and end time information
*/
var inspectAac_ = function (bytes) {
var endLoop = false,
audioCount = 0,
sampleRate = null,
timestamp = null,
frameSize = 0,
byteIndex = 0,
packet;
while (bytes.length - byteIndex >= 3) {
var type = probe.aac.parseType(bytes, byteIndex);
switch (type) {
case 'timed-metadata':
// Exit early because we don't have enough to parse
// the ID3 tag header
if (bytes.length - byteIndex < 10) {
endLoop = true;
break;
}
frameSize = probe.aac.parseId3TagSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > bytes.length) {
endLoop = true;
break;
}
if (timestamp === null) {
packet = bytes.subarray(byteIndex, byteIndex + frameSize);
timestamp = probe.aac.parseAacTimestamp(packet);
}
byteIndex += frameSize;
break;
case 'audio':
// Exit early because we don't have enough to parse
// the ADTS frame header
if (bytes.length - byteIndex < 7) {
endLoop = true;
break;
}
frameSize = probe.aac.parseAdtsSize(bytes, byteIndex); // Exit early if we don't have enough in the buffer
// to emit a full packet
if (frameSize > bytes.length) {
endLoop = true;
break;
}
if (sampleRate === null) {
packet = bytes.subarray(byteIndex, byteIndex + frameSize);
sampleRate = probe.aac.parseSampleRate(packet);
}
audioCount++;
byteIndex += frameSize;
break;
default:
byteIndex++;
break;
}
if (endLoop) {
return null;
}
}
if (sampleRate === null || timestamp === null) {
return null;
}
var audioTimescale = ONE_SECOND_IN_TS / sampleRate;
var result = {
audio: [{
type: 'audio',
dts: timestamp,
pts: timestamp
}, {
type: 'audio',
dts: timestamp + audioCount * 1024 * audioTimescale,
pts: timestamp + audioCount * 1024 * audioTimescale
}]
};
return result;
};
/**
* inspects the transport stream segment data for start and end time information
* of the audio and video tracks (when present) as well as the first key frame's
* start time.
*/
var inspectTs_ = function (bytes) {
var pmt = {
pid: null,
table: null
};
var result = {};
parsePsi_(bytes, pmt);
for (var pid in pmt.table) {
if (pmt.table.hasOwnProperty(pid)) {
var type = pmt.table[pid];
switch (type) {
case StreamTypes.H264_STREAM_TYPE:
result.video = [];
parseVideoPes_(bytes, pmt, result);
if (result.video.length === 0) {
delete result.video;
}
break;
case StreamTypes.ADTS_STREAM_TYPE:
result.audio = [];
parseAudioPes_(bytes, pmt, result);
if (result.audio.length === 0) {
delete result.audio;
}
break;
}
}
}
return result;
};
/**
* Inspects segment byte data and returns an object with start and end timing information
*
* @param {Uint8Array} bytes The segment byte data
* @param {Number} baseTimestamp Relative reference timestamp used when adjusting frame
* timestamps for rollover. This value must be in 90khz clock.
* @return {Object} Object containing start and end frame timing info of segment.
*/
var inspect = function (bytes, baseTimestamp) {
var isAacData = probe.aac.isLikelyAacData(bytes);
var result;
if (isAacData) {
result = inspectAac_(bytes);
} else {
result = inspectTs_(bytes);
}
if (!result || !result.audio && !result.video) {
return null;
}
adjustTimestamp_(result, baseTimestamp);
return result;
};
var tsInspector = {
inspect: inspect,
parseAudioPes_: parseAudioPes_
};
/* global self */
/**
* Re-emits transmuxer events by converting them into messages to the
* world outside the worker.
*
* @param {Object} transmuxer the transmuxer to wire events on
* @private
*/
const wireTransmuxerEvents = function (self, transmuxer) {
transmuxer.on('data', function (segment) {
// transfer ownership of the underlying ArrayBuffer
// instead of doing a copy to save memory
// ArrayBuffers are transferable but generic TypedArrays are not
// @link https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers#Passing_data_by_transferring_ownership_(transferable_objects)
const initArray = segment.initSegment;
segment.initSegment = {
data: initArray.buffer,
byteOffset: initArray.byteOffset,
byteLength: initArray.byteLength
};
const typedArray = segment.data;
segment.data = typedArray.buffer;
self.postMessage({
action: 'data',
segment,
byteOffset: typedArray.byteOffset,
byteLength: typedArray.byteLength
}, [segment.data]);
});
transmuxer.on('done', function (data) {
self.postMessage({
action: 'done'
});
});
transmuxer.on('gopInfo', function (gopInfo) {
self.postMessage({
action: 'gopInfo',
gopInfo
});
});
transmuxer.on('videoSegmentTimingInfo', function (timingInfo) {
const videoSegmentTimingInfo = {
start: {
decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
},
end: {
decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
},
baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
};
if (timingInfo.prependedContentDuration) {
videoSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
}
self.postMessage({
action: 'videoSegmentTimingInfo',
videoSegmentTimingInfo
});
});
transmuxer.on('audioSegmentTimingInfo', function (timingInfo) {
// Note that all times for [audio/video]SegmentTimingInfo events are in video clock
const audioSegmentTimingInfo = {
start: {
decode: clock$2.videoTsToSeconds(timingInfo.start.dts),
presentation: clock$2.videoTsToSeconds(timingInfo.start.pts)
},
end: {
decode: clock$2.videoTsToSeconds(timingInfo.end.dts),
presentation: clock$2.videoTsToSeconds(timingInfo.end.pts)
},
baseMediaDecodeTime: clock$2.videoTsToSeconds(timingInfo.baseMediaDecodeTime)
};
if (timingInfo.prependedContentDuration) {
audioSegmentTimingInfo.prependedContentDuration = clock$2.videoTsToSeconds(timingInfo.prependedContentDuration);
}
self.postMessage({
action: 'audioSegmentTimingInfo',
audioSegmentTimingInfo
});
});
transmuxer.on('id3Frame', function (id3Frame) {
self.postMessage({
action: 'id3Frame',
id3Frame
});
});
transmuxer.on('caption', function (caption) {
self.postMessage({
action: 'caption',
caption
});
});
transmuxer.on('trackinfo', function (trackInfo) {
self.postMessage({
action: 'trackinfo',
trackInfo
});
});
transmuxer.on('audioTimingInfo', function (audioTimingInfo) {
// convert to video TS since we prioritize video time over audio
self.postMessage({
action: 'audioTimingInfo',
audioTimingInfo: {
start: clock$2.videoTsToSeconds(audioTimingInfo.start),
end: clock$2.videoTsToSeconds(audioTimingInfo.end)
}
});
});
transmuxer.on('videoTimingInfo', function (videoTimingInfo) {
self.postMessage({
action: 'videoTimingInfo',
videoTimingInfo: {
start: clock$2.videoTsToSeconds(videoTimingInfo.start),
end: clock$2.videoTsToSeconds(videoTimingInfo.end)
}
});
});
transmuxer.on('log', function (log) {
self.postMessage({
action: 'log',
log
});
});
};
/**
* All incoming messages route through this hash. If no function exists
* to handle an incoming message, then we ignore the message.
*
* @class MessageHandlers
* @param {Object} options the options to initialize with
*/
class MessageHandlers {
constructor(self, options) {
this.options = options || {};
this.self = self;
this.init();
}
/**
* initialize our web worker and wire all the events.
*/
init() {
if (this.transmuxer) {
this.transmuxer.dispose();
}
this.transmuxer = new transmuxer.Transmuxer(this.options);
wireTransmuxerEvents(this.self, this.transmuxer);
}
pushMp4Captions(data) {
if (!this.captionParser) {
this.captionParser = new captionParser();
this.captionParser.init();
}
const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
const parsed = this.captionParser.parse(segment, data.trackIds, data.timescales);
this.self.postMessage({
action: 'mp4Captions',
captions: parsed && parsed.captions || [],
logs: parsed && parsed.logs || [],
data: segment.buffer
}, [segment.buffer]);
}
probeMp4StartTime({
timescales,
data
}) {
const startTime = probe$2.startTime(timescales, data);
this.self.postMessage({
action: 'probeMp4StartTime',
startTime,
data
}, [data.buffer]);
}
probeMp4Tracks({
data
}) {
const tracks = probe$2.tracks(data);
this.self.postMessage({
action: 'probeMp4Tracks',
tracks,
data
}, [data.buffer]);
}
/**
* Probes an mp4 segment for EMSG boxes containing ID3 data.
* https://aomediacodec.github.io/id3-emsg/
*
* @param {Uint8Array} data segment data
* @param {number} offset segment start time
* @return {Object[]} an array of ID3 frames
*/
probeEmsgID3({
data,
offset
}) {
const id3Frames = probe$2.getEmsgID3(data, offset);
this.self.postMessage({
action: 'probeEmsgID3',
id3Frames,
emsgData: data
}, [data.buffer]);
}
/**
* Probe an mpeg2-ts segment to determine the start time of the segment in it's
* internal "media time," as well as whether it contains video and/or audio.
*
* @private
* @param {Uint8Array} bytes - segment bytes
* @param {number} baseStartTime
* Relative reference timestamp used when adjusting frame timestamps for rollover.
* This value should be in seconds, as it's converted to a 90khz clock within the
* function body.
* @return {Object} The start time of the current segment in "media time" as well as
* whether it contains video and/or audio
*/
probeTs({
data,
baseStartTime
}) {
const tsStartTime = typeof baseStartTime === 'number' && !isNaN(baseStartTime) ? baseStartTime * clock$2.ONE_SECOND_IN_TS : void 0;
const timeInfo = tsInspector.inspect(data, tsStartTime);
let result = null;
if (timeInfo) {
result = {
// each type's time info comes back as an array of 2 times, start and end
hasVideo: timeInfo.video && timeInfo.video.length === 2 || false,
hasAudio: timeInfo.audio && timeInfo.audio.length === 2 || false
};
if (result.hasVideo) {
result.videoStart = timeInfo.video[0].ptsTime;
}
if (result.hasAudio) {
result.audioStart = timeInfo.audio[0].ptsTime;
}
}
this.self.postMessage({
action: 'probeTs',
result,
data
}, [data.buffer]);
}
clearAllMp4Captions() {
if (this.captionParser) {
this.captionParser.clearAllCaptions();
}
}
clearParsedMp4Captions() {
if (this.captionParser) {
this.captionParser.clearParsedCaptions();
}
}
/**
* Adds data (a ts segment) to the start of the transmuxer pipeline for
* processing.
*
* @param {ArrayBuffer} data data to push into the muxer
*/
push(data) {
// Cast array buffer to correct type for transmuxer
const segment = new Uint8Array(data.data, data.byteOffset, data.byteLength);
this.transmuxer.push(segment);
}
/**
* Recreate the transmuxer so that the next segment added via `push`
* start with a fresh transmuxer.
*/
reset() {
this.transmuxer.reset();
}
/**
* Set the value that will be used as the `baseMediaDecodeTime` time for the
* next segment pushed in. Subsequent segments will have their `baseMediaDecodeTime`
* set relative to the first based on the PTS values.
*
* @param {Object} data used to set the timestamp offset in the muxer
*/
setTimestampOffset(data) {
const timestampOffset = data.timestampOffset || 0;
this.transmuxer.setBaseMediaDecodeTime(Math.round(clock$2.secondsToVideoTs(timestampOffset)));
}
setAudioAppendStart(data) {
this.transmuxer.setAudioAppendStart(Math.ceil(clock$2.secondsToVideoTs(data.appendStart)));
}
setRemux(data) {
this.transmuxer.setRemux(data.remux);
}
/**
* Forces the pipeline to finish processing the last segment and emit it's
* results.
*
* @param {Object} data event data, not really used
*/
flush(data) {
this.transmuxer.flush(); // transmuxed done action is fired after both audio/video pipelines are flushed
self.postMessage({
action: 'done',
type: 'transmuxed'
});
}
endTimeline() {
this.transmuxer.endTimeline(); // transmuxed endedtimeline action is fired after both audio/video pipelines end their
// timelines
self.postMessage({
action: 'endedtimeline',
type: 'transmuxed'
});
}
alignGopsWith(data) {
this.transmuxer.alignGopsWith(data.gopsToAlignWith.slice());
}
}
/**
* Our web worker interface so that things can talk to mux.js
* that will be running in a web worker. the scope is passed to this by
* webworkify.
*
* @param {Object} self the scope for the web worker
*/
self.onmessage = function (event) {
if (event.data.action === 'init' && event.data.options) {
this.messageHandlers = new MessageHandlers(self, event.data.options);
return;
}
if (!this.messageHandlers) {
this.messageHandlers = new MessageHandlers(self);
}
if (event.data && event.data.action && event.data.action !== 'init') {
if (this.messageHandlers[event.data.action]) {
this.messageHandlers[event.data.action](event.data);
}
}
};
}));
var TransmuxWorker = factory(workerCode$1);
/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/transmuxer-worker.js */
const handleData_ = (event, transmuxedData, callback) => {
const {
type,
initSegment,
captions,
captionStreams,
metadata,
videoFrameDtsTime,
videoFramePtsTime
} = event.data.segment;
transmuxedData.buffer.push({
captions,
captionStreams,
metadata
});
const boxes = event.data.segment.boxes || {
data: event.data.segment.data
};
const result = {
type,
// cast ArrayBuffer to TypedArray
data: new Uint8Array(boxes.data, boxes.data.byteOffset, boxes.data.byteLength),
initSegment: new Uint8Array(initSegment.data, initSegment.byteOffset, initSegment.byteLength)
};
if (typeof videoFrameDtsTime !== 'undefined') {
result.videoFrameDtsTime = videoFrameDtsTime;
}
if (typeof videoFramePtsTime !== 'undefined') {
result.videoFramePtsTime = videoFramePtsTime;
}
callback(result);
};
const handleDone_ = ({
transmuxedData,
callback
}) => {
// Previously we only returned data on data events,
// not on done events. Clear out the buffer to keep that consistent.
transmuxedData.buffer = []; // all buffers should have been flushed from the muxer, so start processing anything we
// have received
callback(transmuxedData);
};
const handleGopInfo_ = (event, transmuxedData) => {
transmuxedData.gopInfo = event.data.gopInfo;
};
const processTransmux = options => {
const {
transmuxer,
bytes,
audioAppendStart,
gopsToAlignWith,
remux,
onData,
onTrackInfo,
onAudioTimingInfo,
onVideoTimingInfo,
onVideoSegmentTimingInfo,
onAudioSegmentTimingInfo,
onId3,
onCaptions,
onDone,
onEndedTimeline,
onTransmuxerLog,
isEndOfTimeline,
segment,
triggerSegmentEventFn
} = options;
const transmuxedData = {
buffer: []
};
let waitForEndedTimelineEvent = isEndOfTimeline;
const handleMessage = event => {
if (transmuxer.currentTransmux !== options) {
// disposed
return;
}
if (event.data.action === 'data') {
handleData_(event, transmuxedData, onData);
}
if (event.data.action === 'trackinfo') {
onTrackInfo(event.data.trackInfo);
}
if (event.data.action === 'gopInfo') {
handleGopInfo_(event, transmuxedData);
}
if (event.data.action === 'audioTimingInfo') {
onAudioTimingInfo(event.data.audioTimingInfo);
}
if (event.data.action === 'videoTimingInfo') {
onVideoTimingInfo(event.data.videoTimingInfo);
}
if (event.data.action === 'videoSegmentTimingInfo') {
onVideoSegmentTimingInfo(event.data.videoSegmentTimingInfo);
}
if (event.data.action === 'audioSegmentTimingInfo') {
onAudioSegmentTimingInfo(event.data.audioSegmentTimingInfo);
}
if (event.data.action === 'id3Frame') {
onId3([event.data.id3Frame], event.data.id3Frame.dispatchType);
}
if (event.data.action === 'caption') {
onCaptions(event.data.caption);
}
if (event.data.action === 'endedtimeline') {
waitForEndedTimelineEvent = false;
onEndedTimeline();
}
if (event.data.action === 'log') {
onTransmuxerLog(event.data.log);
} // wait for the transmuxed event since we may have audio and video
if (event.data.type !== 'transmuxed') {
return;
} // If the "endedtimeline" event has not yet fired, and this segment represents the end
// of a timeline, that means there may still be data events before the segment
// processing can be considerred complete. In that case, the final event should be
// an "endedtimeline" event with the type "transmuxed."
if (waitForEndedTimelineEvent) {
return;
}
transmuxer.onmessage = null;
handleDone_({
transmuxedData,
callback: onDone
});
/* eslint-disable no-use-before-define */
dequeue(transmuxer);
/* eslint-enable */
};
const handleError = () => {
const error = {
message: 'Received an error message from the transmuxer worker',
metadata: {
errorType: videojs.Error.StreamingFailedToTransmuxSegment,
segmentInfo: segmentInfoPayload({
segment
})
}
};
onDone(null, error);
};
transmuxer.onmessage = handleMessage;
transmuxer.onerror = handleError;
if (audioAppendStart) {
transmuxer.postMessage({
action: 'setAudioAppendStart',
appendStart: audioAppendStart
});
} // allow empty arrays to be passed to clear out GOPs
if (Array.isArray(gopsToAlignWith)) {
transmuxer.postMessage({
action: 'alignGopsWith',
gopsToAlignWith
});
}
if (typeof remux !== 'undefined') {
transmuxer.postMessage({
action: 'setRemux',
remux
});
}
if (bytes.byteLength) {
const buffer = bytes instanceof ArrayBuffer ? bytes : bytes.buffer;
const byteOffset = bytes instanceof ArrayBuffer ? 0 : bytes.byteOffset;
triggerSegmentEventFn({
type: 'segmenttransmuxingstart',
segment
});
transmuxer.postMessage({
action: 'push',
// Send the typed-array of data as an ArrayBuffer so that
// it can be sent as a "Transferable" and avoid the costly
// memory copy
data: buffer,
// To recreate the original typed-array, we need information
// about what portion of the ArrayBuffer it was a view into
byteOffset,
byteLength: bytes.byteLength
}, [buffer]);
}
if (isEndOfTimeline) {
transmuxer.postMessage({
action: 'endTimeline'
});
} // even if we didn't push any bytes, we have to make sure we flush in case we reached
// the end of the segment
transmuxer.postMessage({
action: 'flush'
});
};
const dequeue = transmuxer => {
transmuxer.currentTransmux = null;
if (transmuxer.transmuxQueue.length) {
transmuxer.currentTransmux = transmuxer.transmuxQueue.shift();
if (typeof transmuxer.currentTransmux === 'function') {
transmuxer.currentTransmux();
} else {
processTransmux(transmuxer.currentTransmux);
}
}
};
const processAction = (transmuxer, action) => {
transmuxer.postMessage({
action
});
dequeue(transmuxer);
};
const enqueueAction = (action, transmuxer) => {
if (!transmuxer.currentTransmux) {
transmuxer.currentTransmux = action;
processAction(transmuxer, action);
return;
}
transmuxer.transmuxQueue.push(processAction.bind(null, transmuxer, action));
};
const reset = transmuxer => {
enqueueAction('reset', transmuxer);
};
const endTimeline = transmuxer => {
enqueueAction('endTimeline', transmuxer);
};
const transmux = options => {
if (!options.transmuxer.currentTransmux) {
options.transmuxer.currentTransmux = options;
processTransmux(options);
return;
}
options.transmuxer.transmuxQueue.push(options);
};
const createTransmuxer = options => {
const transmuxer = new TransmuxWorker();
transmuxer.currentTransmux = null;
transmuxer.transmuxQueue = [];
const term = transmuxer.terminate;
transmuxer.terminate = () => {
transmuxer.currentTransmux = null;
transmuxer.transmuxQueue.length = 0;
return term.call(transmuxer);
};
transmuxer.postMessage({
action: 'init',
options
});
return transmuxer;
};
var segmentTransmuxer = {
reset,
endTimeline,
transmux,
createTransmuxer
};
const workerCallback = function (options) {
const transmuxer = options.transmuxer;
const endAction = options.endAction || options.action;
const callback = options.callback;
const message = _extends$1({}, options, {
endAction: null,
transmuxer: null,
callback: null
});
const listenForEndEvent = event => {
if (event.data.action !== endAction) {
return;
}
transmuxer.removeEventListener('message', listenForEndEvent); // transfer ownership of bytes back to us.
if (event.data.data) {
event.data.data = new Uint8Array(event.data.data, options.byteOffset || 0, options.byteLength || event.data.data.byteLength);
if (options.data) {
options.data = event.data.data;
}
}
callback(event.data);
};
transmuxer.addEventListener('message', listenForEndEvent);
if (options.data) {
const isArrayBuffer = options.data instanceof ArrayBuffer;
message.byteOffset = isArrayBuffer ? 0 : options.data.byteOffset;
message.byteLength = options.data.byteLength;
const transfers = [isArrayBuffer ? options.data : options.data.buffer];
transmuxer.postMessage(message, transfers);
} else {
transmuxer.postMessage(message);
}
};
const REQUEST_ERRORS = {
FAILURE: 2,
TIMEOUT: -101,
ABORTED: -102
};
/**
* Abort all requests
*
* @param {Object} activeXhrs - an object that tracks all XHR requests
*/
const abortAll = activeXhrs => {
activeXhrs.forEach(xhr => {
xhr.abort();
});
};
/**
* Gather important bandwidth stats once a request has completed
*
* @param {Object} request - the XHR request from which to gather stats
*/
const getRequestStats = request => {
return {
bandwidth: request.bandwidth,
bytesReceived: request.bytesReceived || 0,
roundTripTime: request.roundTripTime || 0
};
};
/**
* If possible gather bandwidth stats as a request is in
* progress
*
* @param {Event} progressEvent - an event object from an XHR's progress event
*/
const getProgressStats = progressEvent => {
const request = progressEvent.target;
const roundTripTime = Date.now() - request.requestTime;
const stats = {
bandwidth: Infinity,
bytesReceived: 0,
roundTripTime: roundTripTime || 0
};
stats.bytesReceived = progressEvent.loaded; // This can result in Infinity if stats.roundTripTime is 0 but that is ok
// because we should only use bandwidth stats on progress to determine when
// abort a request early due to insufficient bandwidth
stats.bandwidth = Math.floor(stats.bytesReceived / stats.roundTripTime * 8 * 1000);
return stats;
};
/**
* Handle all error conditions in one place and return an object
* with all the information
*
* @param {Error|null} error - if non-null signals an error occured with the XHR
* @param {Object} request - the XHR request that possibly generated the error
*/
const handleErrors = (error, request) => {
const {
requestType
} = request;
const metadata = getStreamingNetworkErrorMetadata({
requestType,
request,
error
});
if (request.timedout) {
return {
status: request.status,
message: 'HLS request timed-out at URL: ' + request.uri,
code: REQUEST_ERRORS.TIMEOUT,
xhr: request,
metadata
};
}
if (request.aborted) {
return {
status: request.status,
message: 'HLS request aborted at URL: ' + request.uri,
code: REQUEST_ERRORS.ABORTED,
xhr: request,
metadata
};
}
if (error) {
return {
status: request.status,
message: 'HLS request errored at URL: ' + request.uri,
code: REQUEST_ERRORS.FAILURE,
xhr: request,
metadata
};
}
if (request.responseType === 'arraybuffer' && request.response.byteLength === 0) {
return {
status: request.status,
message: 'Empty HLS response at URL: ' + request.uri,
code: REQUEST_ERRORS.FAILURE,
xhr: request,
metadata
};
}
return null;
};
/**
* Handle responses for key data and convert the key data to the correct format
* for the decryption step later
*
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Array} objects - objects to add the key bytes to.
* @param {Function} finishProcessingFn - a callback to execute to continue processing
* this request
*/
const handleKeyResponse = (segment, objects, finishProcessingFn, triggerSegmentEventFn) => (error, request) => {
const response = request.response;
const errorObj = handleErrors(error, request);
if (errorObj) {
return finishProcessingFn(errorObj, segment);
}
if (response.byteLength !== 16) {
return finishProcessingFn({
status: request.status,
message: 'Invalid HLS key at URL: ' + request.uri,
code: REQUEST_ERRORS.FAILURE,
xhr: request
}, segment);
}
const view = new DataView(response);
const bytes = new Uint32Array([view.getUint32(0), view.getUint32(4), view.getUint32(8), view.getUint32(12)]);
for (let i = 0; i < objects.length; i++) {
objects[i].bytes = bytes;
}
const keyInfo = {
uri: request.uri
};
triggerSegmentEventFn({
type: 'segmentkeyloadcomplete',
segment,
keyInfo
});
return finishProcessingFn(null, segment);
};
const parseInitSegment = (segment, callback) => {
const type = detectContainerForBytes(segment.map.bytes); // TODO: We should also handle ts init segments here, but we
// only know how to parse mp4 init segments at the moment
if (type !== 'mp4') {
const uri = segment.map.resolvedUri || segment.map.uri;
const mediaType = type || 'unknown';
return callback({
internal: true,
message: `Found unsupported ${mediaType} container for initialization segment at URL: ${uri}`,
code: REQUEST_ERRORS.FAILURE,
metadata: {
mediaType
}
});
}
workerCallback({
action: 'probeMp4Tracks',
data: segment.map.bytes,
transmuxer: segment.transmuxer,
callback: ({
tracks,
data
}) => {
// transfer bytes back to us
segment.map.bytes = data;
tracks.forEach(function (track) {
segment.map.tracks = segment.map.tracks || {}; // only support one track of each type for now
if (segment.map.tracks[track.type]) {
return;
}
segment.map.tracks[track.type] = track;
if (typeof track.id === 'number' && track.timescale) {
segment.map.timescales = segment.map.timescales || {};
segment.map.timescales[track.id] = track.timescale;
}
});
return callback(null);
}
});
};
/**
* Handle init-segment responses
*
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Function} finishProcessingFn - a callback to execute to continue processing
* this request
*/
const handleInitSegmentResponse = ({
segment,
finishProcessingFn,
triggerSegmentEventFn
}) => (error, request) => {
const errorObj = handleErrors(error, request);
if (errorObj) {
return finishProcessingFn(errorObj, segment);
}
const bytes = new Uint8Array(request.response);
triggerSegmentEventFn({
type: 'segmentloaded',
segment
}); // init segment is encypted, we will have to wait
// until the key request is done to decrypt.
if (segment.map.key) {
segment.map.encryptedBytes = bytes;
return finishProcessingFn(null, segment);
}
segment.map.bytes = bytes;
parseInitSegment(segment, function (parseError) {
if (parseError) {
parseError.xhr = request;
parseError.status = request.status;
return finishProcessingFn(parseError, segment);
}
finishProcessingFn(null, segment);
});
};
/**
* Response handler for segment-requests being sure to set the correct
* property depending on whether the segment is encryped or not
* Also records and keeps track of stats that are used for ABR purposes
*
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Function} finishProcessingFn - a callback to execute to continue processing
* this request
*/
const handleSegmentResponse = ({
segment,
finishProcessingFn,
responseType,
triggerSegmentEventFn
}) => (error, request) => {
const errorObj = handleErrors(error, request);
if (errorObj) {
return finishProcessingFn(errorObj, segment);
}
triggerSegmentEventFn({
type: 'segmentloaded',
segment
});
const newBytes =
// although responseText "should" exist, this guard serves to prevent an error being
// thrown for two primary cases:
// 1. the mime type override stops working, or is not implemented for a specific
// browser
// 2. when using mock XHR libraries like sinon that do not allow the override behavior
responseType === 'arraybuffer' || !request.responseText ? request.response : stringToArrayBuffer(request.responseText.substring(segment.lastReachedChar || 0));
segment.stats = getRequestStats(request);
if (segment.key) {
segment.encryptedBytes = new Uint8Array(newBytes);
} else {
segment.bytes = new Uint8Array(newBytes);
}
return finishProcessingFn(null, segment);
};
const transmuxAndNotify = ({
segment,
bytes,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}) => {
const fmp4Tracks = segment.map && segment.map.tracks || {};
const isMuxed = Boolean(fmp4Tracks.audio && fmp4Tracks.video); // Keep references to each function so we can null them out after we're done with them.
// One reason for this is that in the case of full segments, we want to trust start
// times from the probe, rather than the transmuxer.
let audioStartFn = timingInfoFn.bind(null, segment, 'audio', 'start');
const audioEndFn = timingInfoFn.bind(null, segment, 'audio', 'end');
let videoStartFn = timingInfoFn.bind(null, segment, 'video', 'start');
const videoEndFn = timingInfoFn.bind(null, segment, 'video', 'end');
const finish = () => transmux({
bytes,
transmuxer: segment.transmuxer,
audioAppendStart: segment.audioAppendStart,
gopsToAlignWith: segment.gopsToAlignWith,
remux: isMuxed,
onData: result => {
result.type = result.type === 'combined' ? 'video' : result.type;
dataFn(segment, result);
},
onTrackInfo: trackInfo => {
if (trackInfoFn) {
if (isMuxed) {
trackInfo.isMuxed = true;
}
trackInfoFn(segment, trackInfo);
}
},
onAudioTimingInfo: audioTimingInfo => {
// we only want the first start value we encounter
if (audioStartFn && typeof audioTimingInfo.start !== 'undefined') {
audioStartFn(audioTimingInfo.start);
audioStartFn = null;
} // we want to continually update the end time
if (audioEndFn && typeof audioTimingInfo.end !== 'undefined') {
audioEndFn(audioTimingInfo.end);
}
},
onVideoTimingInfo: videoTimingInfo => {
// we only want the first start value we encounter
if (videoStartFn && typeof videoTimingInfo.start !== 'undefined') {
videoStartFn(videoTimingInfo.start);
videoStartFn = null;
} // we want to continually update the end time
if (videoEndFn && typeof videoTimingInfo.end !== 'undefined') {
videoEndFn(videoTimingInfo.end);
}
},
onVideoSegmentTimingInfo: videoSegmentTimingInfo => {
const timingInfo = {
pts: {
start: videoSegmentTimingInfo.start.presentation,
end: videoSegmentTimingInfo.end.presentation
},
dts: {
start: videoSegmentTimingInfo.start.decode,
end: videoSegmentTimingInfo.end.decode
}
};
triggerSegmentEventFn({
type: 'segmenttransmuxingtiminginfoavailable',
segment,
timingInfo
});
videoSegmentTimingInfoFn(videoSegmentTimingInfo);
},
onAudioSegmentTimingInfo: audioSegmentTimingInfo => {
const timingInfo = {
pts: {
start: audioSegmentTimingInfo.start.pts,
end: audioSegmentTimingInfo.end.pts
},
dts: {
start: audioSegmentTimingInfo.start.dts,
end: audioSegmentTimingInfo.end.dts
}
};
triggerSegmentEventFn({
type: 'segmenttransmuxingtiminginfoavailable',
segment,
timingInfo
});
audioSegmentTimingInfoFn(audioSegmentTimingInfo);
},
onId3: (id3Frames, dispatchType) => {
id3Fn(segment, id3Frames, dispatchType);
},
onCaptions: captions => {
captionsFn(segment, [captions]);
},
isEndOfTimeline,
onEndedTimeline: () => {
endedTimelineFn();
},
onTransmuxerLog,
onDone: (result, error) => {
if (!doneFn) {
return;
}
result.type = result.type === 'combined' ? 'video' : result.type;
triggerSegmentEventFn({
type: 'segmenttransmuxingcomplete',
segment
});
doneFn(error, segment, result);
},
segment,
triggerSegmentEventFn
}); // In the transmuxer, we don't yet have the ability to extract a "proper" start time.
// Meaning cached frame data may corrupt our notion of where this segment
// really starts. To get around this, probe for the info needed.
workerCallback({
action: 'probeTs',
transmuxer: segment.transmuxer,
data: bytes,
baseStartTime: segment.baseStartTime,
callback: data => {
segment.bytes = bytes = data.data;
const probeResult = data.result;
if (probeResult) {
trackInfoFn(segment, {
hasAudio: probeResult.hasAudio,
hasVideo: probeResult.hasVideo,
isMuxed
});
trackInfoFn = null;
}
finish();
}
});
};
const handleSegmentBytes = ({
segment,
bytes,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}) => {
let bytesAsUint8Array = new Uint8Array(bytes); // TODO:
// We should have a handler that fetches the number of bytes required
// to check if something is fmp4. This will allow us to save bandwidth
// because we can only exclude a playlist and abort requests
// by codec after trackinfo triggers.
if (isLikelyFmp4MediaSegment(bytesAsUint8Array)) {
segment.isFmp4 = true;
const {
tracks
} = segment.map;
const trackInfo = {
isFmp4: true,
hasVideo: !!tracks.video,
hasAudio: !!tracks.audio
}; // if we have a audio track, with a codec that is not set to
// encrypted audio
if (tracks.audio && tracks.audio.codec && tracks.audio.codec !== 'enca') {
trackInfo.audioCodec = tracks.audio.codec;
} // if we have a video track, with a codec that is not set to
// encrypted video
if (tracks.video && tracks.video.codec && tracks.video.codec !== 'encv') {
trackInfo.videoCodec = tracks.video.codec;
}
if (tracks.video && tracks.audio) {
trackInfo.isMuxed = true;
} // since we don't support appending fmp4 data on progress, we know we have the full
// segment here
trackInfoFn(segment, trackInfo); // The probe doesn't provide the segment end time, so only callback with the start
// time. The end time can be roughly calculated by the receiver using the duration.
//
// Note that the start time returned by the probe reflects the baseMediaDecodeTime, as
// that is the true start of the segment (where the playback engine should begin
// decoding).
const finishLoading = (captions, id3Frames) => {
// if the track still has audio at this point it is only possible
// for it to be audio only. See `tracks.video && tracks.audio` if statement
// above.
// we make sure to use segment.bytes here as that
dataFn(segment, {
data: bytesAsUint8Array,
type: trackInfo.hasAudio && !trackInfo.isMuxed ? 'audio' : 'video'
});
if (id3Frames && id3Frames.length) {
id3Fn(segment, id3Frames);
}
if (captions && captions.length) {
captionsFn(segment, captions);
}
doneFn(null, segment, {});
};
workerCallback({
action: 'probeMp4StartTime',
timescales: segment.map.timescales,
data: bytesAsUint8Array,
transmuxer: segment.transmuxer,
callback: ({
data,
startTime
}) => {
// transfer bytes back to us
bytes = data.buffer;
segment.bytes = bytesAsUint8Array = data;
if (trackInfo.hasAudio && !trackInfo.isMuxed) {
timingInfoFn(segment, 'audio', 'start', startTime);
}
if (trackInfo.hasVideo) {
timingInfoFn(segment, 'video', 'start', startTime);
}
workerCallback({
action: 'probeEmsgID3',
data: bytesAsUint8Array,
transmuxer: segment.transmuxer,
offset: startTime,
callback: ({
emsgData,
id3Frames
}) => {
// transfer bytes back to us
bytes = emsgData.buffer;
segment.bytes = bytesAsUint8Array = emsgData; // Run through the CaptionParser in case there are captions.
// Initialize CaptionParser if it hasn't been yet
if (!tracks.video || !emsgData.byteLength || !segment.transmuxer) {
finishLoading(undefined, id3Frames);
return;
}
workerCallback({
action: 'pushMp4Captions',
endAction: 'mp4Captions',
transmuxer: segment.transmuxer,
data: bytesAsUint8Array,
timescales: segment.map.timescales,
trackIds: [tracks.video.id],
callback: message => {
// transfer bytes back to us
bytes = message.data.buffer;
segment.bytes = bytesAsUint8Array = message.data;
message.logs.forEach(function (log) {
onTransmuxerLog(merge(log, {
stream: 'mp4CaptionParser'
}));
});
finishLoading(message.captions, id3Frames);
}
});
}
});
}
});
return;
} // VTT or other segments that don't need processing
if (!segment.transmuxer) {
doneFn(null, segment, {});
return;
}
if (typeof segment.container === 'undefined') {
segment.container = detectContainerForBytes(bytesAsUint8Array);
}
if (segment.container !== 'ts' && segment.container !== 'aac') {
trackInfoFn(segment, {
hasAudio: false,
hasVideo: false
});
doneFn(null, segment, {});
return;
} // ts or aac
transmuxAndNotify({
segment,
bytes,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
});
};
const decrypt = function ({
id,
key,
encryptedBytes,
decryptionWorker,
segment,
doneFn
}, callback) {
const decryptionHandler = event => {
if (event.data.source === id) {
decryptionWorker.removeEventListener('message', decryptionHandler);
const decrypted = event.data.decrypted;
callback(new Uint8Array(decrypted.bytes, decrypted.byteOffset, decrypted.byteLength));
}
};
decryptionWorker.onerror = () => {
const message = 'An error occurred in the decryption worker';
const segmentInfo = segmentInfoPayload({
segment
});
const decryptError = {
message,
metadata: {
error: new Error(message),
errorType: videojs.Error.StreamingFailedToDecryptSegment,
segmentInfo,
keyInfo: {
uri: segment.key.resolvedUri || segment.map.key.resolvedUri
}
}
};
doneFn(decryptError, segment);
};
decryptionWorker.addEventListener('message', decryptionHandler);
let keyBytes;
if (key.bytes.slice) {
keyBytes = key.bytes.slice();
} else {
keyBytes = new Uint32Array(Array.prototype.slice.call(key.bytes));
} // incrementally decrypt the bytes
decryptionWorker.postMessage(createTransferableMessage({
source: id,
encrypted: encryptedBytes,
key: keyBytes,
iv: key.iv
}), [encryptedBytes.buffer, keyBytes.buffer]);
};
/**
* Decrypt the segment via the decryption web worker
*
* @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
* routines
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Function} trackInfoFn - a callback that receives track info
* @param {Function} timingInfoFn - a callback that receives timing info
* @param {Function} videoSegmentTimingInfoFn
* a callback that receives video timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} audioSegmentTimingInfoFn
* a callback that receives audio timing info based on media times and
* any adjustments made by the transmuxer
* @param {boolean} isEndOfTimeline
* true if this segment represents the last segment in a timeline
* @param {Function} endedTimelineFn
* a callback made when a timeline is ended, will only be called if
* isEndOfTimeline is true
* @param {Function} dataFn - a callback that is executed when segment bytes are available
* and ready to use
* @param {Function} doneFn - a callback that is executed after decryption has completed
*/
const decryptSegment = ({
decryptionWorker,
segment,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}) => {
triggerSegmentEventFn({
type: 'segmentdecryptionstart'
});
decrypt({
id: segment.requestId,
key: segment.key,
encryptedBytes: segment.encryptedBytes,
decryptionWorker,
segment,
doneFn
}, decryptedBytes => {
segment.bytes = decryptedBytes;
triggerSegmentEventFn({
type: 'segmentdecryptioncomplete',
segment
});
handleSegmentBytes({
segment,
bytes: segment.bytes,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
});
});
};
/**
* This function waits for all XHRs to finish (with either success or failure)
* before continueing processing via it's callback. The function gathers errors
* from each request into a single errors array so that the error status for
* each request can be examined later.
*
* @param {Object} activeXhrs - an object that tracks all XHR requests
* @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128 decryption
* routines
* @param {Function} trackInfoFn - a callback that receives track info
* @param {Function} timingInfoFn - a callback that receives timing info
* @param {Function} videoSegmentTimingInfoFn
* a callback that receives video timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} audioSegmentTimingInfoFn
* a callback that receives audio timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} id3Fn - a callback that receives ID3 metadata
* @param {Function} captionsFn - a callback that receives captions
* @param {boolean} isEndOfTimeline
* true if this segment represents the last segment in a timeline
* @param {Function} endedTimelineFn
* a callback made when a timeline is ended, will only be called if
* isEndOfTimeline is true
* @param {Function} dataFn - a callback that is executed when segment bytes are available
* and ready to use
* @param {Function} doneFn - a callback that is executed after all resources have been
* downloaded and any decryption completed
*/
const waitForCompletion = ({
activeXhrs,
decryptionWorker,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}) => {
let count = 0;
let didError = false;
return (error, segment) => {
if (didError) {
return;
}
if (error) {
didError = true; // If there are errors, we have to abort any outstanding requests
abortAll(activeXhrs); // Even though the requests above are aborted, and in theory we could wait until we
// handle the aborted events from those requests, there are some cases where we may
// never get an aborted event. For instance, if the network connection is lost and
// there were two requests, the first may have triggered an error immediately, while
// the second request remains unsent. In that case, the aborted algorithm will not
// trigger an abort: see https://xhr.spec.whatwg.org/#the-abort()-method
//
// We also can't rely on the ready state of the XHR, since the request that
// triggered the connection error may also show as a ready state of 0 (unsent).
// Therefore, we have to finish this group of requests immediately after the first
// seen error.
return doneFn(error, segment);
}
count += 1;
if (count === activeXhrs.length) {
const segmentFinish = function () {
if (segment.encryptedBytes) {
return decryptSegment({
decryptionWorker,
segment,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
});
} // Otherwise, everything is ready just continue
handleSegmentBytes({
segment,
bytes: segment.bytes,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
});
}; // Keep track of when *all* of the requests have completed
segment.endOfAllRequests = Date.now();
if (segment.map && segment.map.encryptedBytes && !segment.map.bytes) {
triggerSegmentEventFn({
type: 'segmentdecryptionstart',
segment
});
return decrypt({
decryptionWorker,
// add -init to the "id" to differentiate between segment
// and init segment decryption, just in case they happen
// at the same time at some point in the future.
id: segment.requestId + '-init',
encryptedBytes: segment.map.encryptedBytes,
key: segment.map.key,
segment,
doneFn
}, decryptedBytes => {
segment.map.bytes = decryptedBytes;
triggerSegmentEventFn({
type: 'segmentdecryptioncomplete',
segment
});
parseInitSegment(segment, parseError => {
if (parseError) {
abortAll(activeXhrs);
return doneFn(parseError, segment);
}
segmentFinish();
});
});
}
segmentFinish();
}
};
};
/**
* Calls the abort callback if any request within the batch was aborted. Will only call
* the callback once per batch of requests, even if multiple were aborted.
*
* @param {Object} loadendState - state to check to see if the abort function was called
* @param {Function} abortFn - callback to call for abort
*/
const handleLoadEnd = ({
loadendState,
abortFn
}) => event => {
const request = event.target;
if (request.aborted && abortFn && !loadendState.calledAbortFn) {
abortFn();
loadendState.calledAbortFn = true;
}
};
/**
* Simple progress event callback handler that gathers some stats before
* executing a provided callback with the `segment` object
*
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Function} progressFn - a callback that is executed each time a progress event
* is received
* @param {Function} trackInfoFn - a callback that receives track info
* @param {Function} timingInfoFn - a callback that receives timing info
* @param {Function} videoSegmentTimingInfoFn
* a callback that receives video timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} audioSegmentTimingInfoFn
* a callback that receives audio timing info based on media times and
* any adjustments made by the transmuxer
* @param {boolean} isEndOfTimeline
* true if this segment represents the last segment in a timeline
* @param {Function} endedTimelineFn
* a callback made when a timeline is ended, will only be called if
* isEndOfTimeline is true
* @param {Function} dataFn - a callback that is executed when segment bytes are available
* and ready to use
* @param {Event} event - the progress event object from XMLHttpRequest
*/
const handleProgress = ({
segment,
progressFn,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn
}) => event => {
const request = event.target;
if (request.aborted) {
return;
}
segment.stats = merge(segment.stats, getProgressStats(event)); // record the time that we receive the first byte of data
if (!segment.stats.firstBytesReceivedAt && segment.stats.bytesReceived) {
segment.stats.firstBytesReceivedAt = Date.now();
}
return progressFn(event, segment);
};
/**
* Load all resources and does any processing necessary for a media-segment
*
* Features:
* decrypts the media-segment if it has a key uri and an iv
* aborts *all* requests if *any* one request fails
*
* The segment object, at minimum, has the following format:
* {
* resolvedUri: String,
* [transmuxer]: Object,
* [byterange]: {
* offset: Number,
* length: Number
* },
* [key]: {
* resolvedUri: String
* [byterange]: {
* offset: Number,
* length: Number
* },
* iv: {
* bytes: Uint32Array
* }
* },
* [map]: {
* resolvedUri: String,
* [byterange]: {
* offset: Number,
* length: Number
* },
* [bytes]: Uint8Array
* }
* }
* ...where [name] denotes optional properties
*
* @param {Function} xhr - an instance of the xhr wrapper in xhr.js
* @param {Object} xhrOptions - the base options to provide to all xhr requests
* @param {WebWorker} decryptionWorker - a WebWorker interface to AES-128
* decryption routines
* @param {Object} segment - a simplified copy of the segmentInfo object
* from SegmentLoader
* @param {Function} abortFn - a callback called (only once) if any piece of a request was
* aborted
* @param {Function} progressFn - a callback that receives progress events from the main
* segment's xhr request
* @param {Function} trackInfoFn - a callback that receives track info
* @param {Function} timingInfoFn - a callback that receives timing info
* @param {Function} videoSegmentTimingInfoFn
* a callback that receives video timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} audioSegmentTimingInfoFn
* a callback that receives audio timing info based on media times and
* any adjustments made by the transmuxer
* @param {Function} id3Fn - a callback that receives ID3 metadata
* @param {Function} captionsFn - a callback that receives captions
* @param {boolean} isEndOfTimeline
* true if this segment represents the last segment in a timeline
* @param {Function} endedTimelineFn
* a callback made when a timeline is ended, will only be called if
* isEndOfTimeline is true
* @param {Function} dataFn - a callback that receives data from the main segment's xhr
* request, transmuxed if needed
* @param {Function} doneFn - a callback that is executed only once all requests have
* succeeded or failed
* @return {Function} a function that, when invoked, immediately aborts all
* outstanding requests
*/
const mediaSegmentRequest = ({
xhr,
xhrOptions,
decryptionWorker,
segment,
abortFn,
progressFn,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}) => {
const activeXhrs = [];
const finishProcessingFn = waitForCompletion({
activeXhrs,
decryptionWorker,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn,
doneFn,
onTransmuxerLog,
triggerSegmentEventFn
}); // optionally, request the decryption key
if (segment.key && !segment.key.bytes) {
const objects = [segment.key];
if (segment.map && !segment.map.bytes && segment.map.key && segment.map.key.resolvedUri === segment.key.resolvedUri) {
objects.push(segment.map.key);
}
const keyRequestOptions = merge(xhrOptions, {
uri: segment.key.resolvedUri,
responseType: 'arraybuffer',
requestType: 'segment-key'
});
const keyRequestCallback = handleKeyResponse(segment, objects, finishProcessingFn, triggerSegmentEventFn);
const keyInfo = {
uri: segment.key.resolvedUri
};
triggerSegmentEventFn({
type: 'segmentkeyloadstart',
segment,
keyInfo
});
const keyXhr = xhr(keyRequestOptions, keyRequestCallback);
activeXhrs.push(keyXhr);
} // optionally, request the associated media init segment
if (segment.map && !segment.map.bytes) {
const differentMapKey = segment.map.key && (!segment.key || segment.key.resolvedUri !== segment.map.key.resolvedUri);
if (differentMapKey) {
const mapKeyRequestOptions = merge(xhrOptions, {
uri: segment.map.key.resolvedUri,
responseType: 'arraybuffer',
requestType: 'segment-key'
});
const mapKeyRequestCallback = handleKeyResponse(segment, [segment.map.key], finishProcessingFn, triggerSegmentEventFn);
const keyInfo = {
uri: segment.map.key.resolvedUri
};
triggerSegmentEventFn({
type: 'segmentkeyloadstart',
segment,
keyInfo
});
const mapKeyXhr = xhr(mapKeyRequestOptions, mapKeyRequestCallback);
activeXhrs.push(mapKeyXhr);
}
const initSegmentOptions = merge(xhrOptions, {
uri: segment.map.resolvedUri,
responseType: 'arraybuffer',
headers: segmentXhrHeaders(segment.map),
requestType: 'segment-media-initialization'
});
const initSegmentRequestCallback = handleInitSegmentResponse({
segment,
finishProcessingFn,
triggerSegmentEventFn
});
triggerSegmentEventFn({
type: 'segmentloadstart',
segment
});
const initSegmentXhr = xhr(initSegmentOptions, initSegmentRequestCallback);
activeXhrs.push(initSegmentXhr);
}
const segmentRequestOptions = merge(xhrOptions, {
uri: segment.part && segment.part.resolvedUri || segment.resolvedUri,
responseType: 'arraybuffer',
headers: segmentXhrHeaders(segment),
requestType: 'segment'
});
const segmentRequestCallback = handleSegmentResponse({
segment,
finishProcessingFn,
responseType: segmentRequestOptions.responseType,
triggerSegmentEventFn
});
triggerSegmentEventFn({
type: 'segmentloadstart',
segment
});
const segmentXhr = xhr(segmentRequestOptions, segmentRequestCallback);
segmentXhr.addEventListener('progress', handleProgress({
segment,
progressFn,
trackInfoFn,
timingInfoFn,
videoSegmentTimingInfoFn,
audioSegmentTimingInfoFn,
id3Fn,
captionsFn,
isEndOfTimeline,
endedTimelineFn,
dataFn
}));
activeXhrs.push(segmentXhr); // since all parts of the request must be considered, but should not make callbacks
// multiple times, provide a shared state object
const loadendState = {};
activeXhrs.forEach(activeXhr => {
activeXhr.addEventListener('loadend', handleLoadEnd({
loadendState,
abortFn
}));
});
return () => abortAll(activeXhrs);
};
/**
* @file - codecs.js - Handles tasks regarding codec strings such as translating them to
* codec strings, or translating codec strings into objects that can be examined.
*/
const logFn$1 = logger('CodecUtils');
/**
* Returns a set of codec strings parsed from the playlist or the default
* codec strings if no codecs were specified in the playlist
*
* @param {Playlist} media the current media playlist
* @return {Object} an object with the video and audio codecs
*/
const getCodecs = function (media) {
// if the codecs were explicitly specified, use them instead of the
// defaults
const mediaAttributes = media.attributes || {};
if (mediaAttributes.CODECS) {
return parseCodecs(mediaAttributes.CODECS);
}
};
const isMaat = (main, media) => {
const mediaAttributes = media.attributes || {};
return main && main.mediaGroups && main.mediaGroups.AUDIO && mediaAttributes.AUDIO && main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
};
const isMuxed = (main, media) => {
if (!isMaat(main, media)) {
return true;
}
const mediaAttributes = media.attributes || {};
const audioGroup = main.mediaGroups.AUDIO[mediaAttributes.AUDIO];
for (const groupId in audioGroup) {
// If an audio group has a URI (the case for HLS, as HLS will use external playlists),
// or there are listed playlists (the case for DASH, as the manifest will have already
// provided all of the details necessary to generate the audio playlist, as opposed to
// HLS' externally requested playlists), then the content is demuxed.
if (!audioGroup[groupId].uri && !audioGroup[groupId].playlists) {
return true;
}
}
return false;
};
const unwrapCodecList = function (codecList) {
const codecs = {};
codecList.forEach(({
mediaType,
type,
details
}) => {
codecs[mediaType] = codecs[mediaType] || [];
codecs[mediaType].push(translateLegacyCodec(`${type}${details}`));
});
Object.keys(codecs).forEach(function (mediaType) {
if (codecs[mediaType].length > 1) {
logFn$1(`multiple ${mediaType} codecs found as attributes: ${codecs[mediaType].join(', ')}. Setting playlist codecs to null so that we wait for mux.js to probe segments for real codecs.`);
codecs[mediaType] = null;
return;
}
codecs[mediaType] = codecs[mediaType][0];
});
return codecs;
};
const codecCount = function (codecObj) {
let count = 0;
if (codecObj.audio) {
count++;
}
if (codecObj.video) {
count++;
}
return count;
};
/**
* Calculates the codec strings for a working configuration of
* SourceBuffers to play variant streams in a main playlist. If
* there is no possible working configuration, an empty object will be
* returned.
*
* @param main {Object} the m3u8 object for the main playlist
* @param media {Object} the m3u8 object for the variant playlist
* @return {Object} the codec strings.
*
* @private
*/
const codecsForPlaylist = function (main, media) {
const mediaAttributes = media.attributes || {};
const codecInfo = unwrapCodecList(getCodecs(media) || []); // HLS with multiple-audio tracks must always get an audio codec.
// Put another way, there is no way to have a video-only multiple-audio HLS!
if (isMaat(main, media) && !codecInfo.audio) {
if (!isMuxed(main, media)) {
// It is possible for codecs to be specified on the audio media group playlist but
// not on the rendition playlist. This is mostly the case for DASH, where audio and
// video are always separate (and separately specified).
const defaultCodecs = unwrapCodecList(codecsFromDefault(main, mediaAttributes.AUDIO) || []);
if (defaultCodecs.audio) {
codecInfo.audio = defaultCodecs.audio;
}
}
}
return codecInfo;
};
const logFn = logger('PlaylistSelector');
const representationToString = function (representation) {
if (!representation || !representation.playlist) {
return;
}
const playlist = representation.playlist;
return JSON.stringify({
id: playlist.id,
bandwidth: representation.bandwidth,
width: representation.width,
height: representation.height,
codecs: playlist.attributes && playlist.attributes.CODECS || ''
});
}; // Utilities
/**
* Returns the CSS value for the specified property on an element
* using `getComputedStyle`. Firefox has a long-standing issue where
* getComputedStyle() may return null when running in an iframe with
* `display: none`.
*
* @see https://bugzilla.mozilla.org/show_bug.cgi?id=548397
* @param {HTMLElement} el the htmlelement to work on
* @param {string} the proprety to get the style for
*/
const safeGetComputedStyle = function (el, property) {
if (!el) {
return '';
}
const result = window.getComputedStyle(el);
if (!result) {
return '';
}
return result[property];
};
/**
* Resuable stable sort function
*
* @param {Playlists} array
* @param {Function} sortFn Different comparators
* @function stableSort
*/
const stableSort = function (array, sortFn) {
const newArray = array.slice();
array.sort(function (left, right) {
const cmp = sortFn(left, right);
if (cmp === 0) {
return newArray.indexOf(left) - newArray.indexOf(right);
}
return cmp;
});
};
/**
* A comparator function to sort two playlist object by bandwidth.
*
* @param {Object} left a media playlist object
* @param {Object} right a media playlist object
* @return {number} Greater than zero if the bandwidth attribute of
* left is greater than the corresponding attribute of right. Less
* than zero if the bandwidth of right is greater than left and
* exactly zero if the two are equal.
*/
const comparePlaylistBandwidth = function (left, right) {
let leftBandwidth;
let rightBandwidth;
if (left.attributes.BANDWIDTH) {
leftBandwidth = left.attributes.BANDWIDTH;
}
leftBandwidth = leftBandwidth || window.Number.MAX_VALUE;
if (right.attributes.BANDWIDTH) {
rightBandwidth = right.attributes.BANDWIDTH;
}
rightBandwidth = rightBandwidth || window.Number.MAX_VALUE;
return leftBandwidth - rightBandwidth;
};
/**
* A comparator function to sort two playlist object by resolution (width).
*
* @param {Object} left a media playlist object
* @param {Object} right a media playlist object
* @return {number} Greater than zero if the resolution.width attribute of
* left is greater than the corresponding attribute of right. Less
* than zero if the resolution.width of right is greater than left and
* exactly zero if the two are equal.
*/
const comparePlaylistResolution = function (left, right) {
let leftWidth;
let rightWidth;
if (left.attributes.RESOLUTION && left.attributes.RESOLUTION.width) {
leftWidth = left.attributes.RESOLUTION.width;
}
leftWidth = leftWidth || window.Number.MAX_VALUE;
if (right.attributes.RESOLUTION && right.attributes.RESOLUTION.width) {
rightWidth = right.attributes.RESOLUTION.width;
}
rightWidth = rightWidth || window.Number.MAX_VALUE; // NOTE - Fallback to bandwidth sort as appropriate in cases where multiple renditions
// have the same media dimensions/ resolution
if (leftWidth === rightWidth && left.attributes.BANDWIDTH && right.attributes.BANDWIDTH) {
return left.attributes.BANDWIDTH - right.attributes.BANDWIDTH;
}
return leftWidth - rightWidth;
};
/**
* Chooses the appropriate media playlist based on bandwidth and player size
*
* @param {Object} main
* Object representation of the main manifest
* @param {number} playerBandwidth
* Current calculated bandwidth of the player
* @param {number} playerWidth
* Current width of the player element (should account for the device pixel ratio)
* @param {number} playerHeight
* Current height of the player element (should account for the device pixel ratio)
* @param {boolean} limitRenditionByPlayerDimensions
* True if the player width and height should be used during the selection, false otherwise
* @param {Object} playlistController
* the current playlistController object
* @return {Playlist} the highest bitrate playlist less than the
* currently detected bandwidth, accounting for some amount of
* bandwidth variance
*/
let simpleSelector = function (main, playerBandwidth, playerWidth, playerHeight, limitRenditionByPlayerDimensions, playlistController) {
// If we end up getting called before `main` is available, exit early
if (!main) {
return;
}
const options = {
bandwidth: playerBandwidth,
width: playerWidth,
height: playerHeight,
limitRenditionByPlayerDimensions
};
let playlists = main.playlists; // if playlist is audio only, select between currently active audio group playlists.
if (Playlist.isAudioOnly(main)) {
playlists = playlistController.getAudioTrackPlaylists_(); // add audioOnly to options so that we log audioOnly: true
// at the buttom of this function for debugging.
options.audioOnly = true;
} // convert the playlists to an intermediary representation to make comparisons easier
let sortedPlaylistReps = playlists.map(playlist => {
let bandwidth;
const width = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.width;
const height = playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height;
bandwidth = playlist.attributes && playlist.attributes.BANDWIDTH;
bandwidth = bandwidth || window.Number.MAX_VALUE;
return {
bandwidth,
width,
height,
playlist
};
});
stableSort(sortedPlaylistReps, (left, right) => left.bandwidth - right.bandwidth); // filter out any playlists that have been excluded due to
// incompatible configurations
sortedPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isIncompatible(rep.playlist)); // filter out any playlists that have been disabled manually through the representations
// api or excluded temporarily due to playback errors.
let enabledPlaylistReps = sortedPlaylistReps.filter(rep => Playlist.isEnabled(rep.playlist));
if (!enabledPlaylistReps.length) {
// if there are no enabled playlists, then they have all been excluded or disabled
// by the user through the representations api. In this case, ignore exclusion and
// fallback to what the user wants by using playlists the user has not disabled.
enabledPlaylistReps = sortedPlaylistReps.filter(rep => !Playlist.isDisabled(rep.playlist));
} // filter out any variant that has greater effective bitrate
// than the current estimated bandwidth
const bandwidthPlaylistReps = enabledPlaylistReps.filter(rep => rep.bandwidth * Config.BANDWIDTH_VARIANCE < playerBandwidth);
let highestRemainingBandwidthRep = bandwidthPlaylistReps[bandwidthPlaylistReps.length - 1]; // get all of the renditions with the same (highest) bandwidth
// and then taking the very first element
const bandwidthBestRep = bandwidthPlaylistReps.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0]; // if we're not going to limit renditions by player size, make an early decision.
if (limitRenditionByPlayerDimensions === false) {
const chosenRep = bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
if (chosenRep && chosenRep.playlist) {
let type = 'sortedPlaylistReps';
if (bandwidthBestRep) {
type = 'bandwidthBestRep';
}
if (enabledPlaylistReps[0]) {
type = 'enabledPlaylistReps';
}
logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
return chosenRep.playlist;
}
logFn('could not choose a playlist with options', options);
return null;
} // filter out playlists without resolution information
const haveResolution = bandwidthPlaylistReps.filter(rep => rep.width && rep.height); // sort variants by resolution
stableSort(haveResolution, (left, right) => left.width - right.width); // if we have the exact resolution as the player use it
const resolutionBestRepList = haveResolution.filter(rep => rep.width === playerWidth && rep.height === playerHeight);
highestRemainingBandwidthRep = resolutionBestRepList[resolutionBestRepList.length - 1]; // ensure that we pick the highest bandwidth variant that have exact resolution
const resolutionBestRep = resolutionBestRepList.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
let resolutionPlusOneList;
let resolutionPlusOneSmallest;
let resolutionPlusOneRep; // find the smallest variant that is larger than the player
// if there is no match of exact resolution
if (!resolutionBestRep) {
resolutionPlusOneList = haveResolution.filter(rep => rep.width > playerWidth || rep.height > playerHeight); // find all the variants have the same smallest resolution
resolutionPlusOneSmallest = resolutionPlusOneList.filter(rep => rep.width === resolutionPlusOneList[0].width && rep.height === resolutionPlusOneList[0].height); // ensure that we also pick the highest bandwidth variant that
// is just-larger-than the video player
highestRemainingBandwidthRep = resolutionPlusOneSmallest[resolutionPlusOneSmallest.length - 1];
resolutionPlusOneRep = resolutionPlusOneSmallest.filter(rep => rep.bandwidth === highestRemainingBandwidthRep.bandwidth)[0];
}
let leastPixelDiffRep; // If this selector proves to be better than others,
// resolutionPlusOneRep and resolutionBestRep and all
// the code involving them should be removed.
if (playlistController.leastPixelDiffSelector) {
// find the variant that is closest to the player's pixel size
const leastPixelDiffList = haveResolution.map(rep => {
rep.pixelDiff = Math.abs(rep.width - playerWidth) + Math.abs(rep.height - playerHeight);
return rep;
}); // get the highest bandwidth, closest resolution playlist
stableSort(leastPixelDiffList, (left, right) => {
// sort by highest bandwidth if pixelDiff is the same
if (left.pixelDiff === right.pixelDiff) {
return right.bandwidth - left.bandwidth;
}
return left.pixelDiff - right.pixelDiff;
});
leastPixelDiffRep = leastPixelDiffList[0];
} // fallback chain of variants
const chosenRep = leastPixelDiffRep || resolutionPlusOneRep || resolutionBestRep || bandwidthBestRep || enabledPlaylistReps[0] || sortedPlaylistReps[0];
if (chosenRep && chosenRep.playlist) {
let type = 'sortedPlaylistReps';
if (leastPixelDiffRep) {
type = 'leastPixelDiffRep';
} else if (resolutionPlusOneRep) {
type = 'resolutionPlusOneRep';
} else if (resolutionBestRep) {
type = 'resolutionBestRep';
} else if (bandwidthBestRep) {
type = 'bandwidthBestRep';
} else if (enabledPlaylistReps[0]) {
type = 'enabledPlaylistReps';
}
logFn(`choosing ${representationToString(chosenRep)} using ${type} with options`, options);
return chosenRep.playlist;
}
logFn('could not choose a playlist with options', options);
return null;
};
/**
* Chooses the appropriate media playlist based on the most recent
* bandwidth estimate and the player size.
*
* Expects to be called within the context of an instance of VhsHandler
*
* @return {Playlist} the highest bitrate playlist less than the
* currently detected bandwidth, accounting for some amount of
* bandwidth variance
*/
const lastBandwidthSelector = function () {
let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
if (!isNaN(this.customPixelRatio)) {
pixelRatio = this.customPixelRatio;
}
return simpleSelector(this.playlists.main, this.systemBandwidth, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
};
/**
* Chooses the appropriate media playlist based on an
* exponential-weighted moving average of the bandwidth after
* filtering for player size.
*
* Expects to be called within the context of an instance of VhsHandler
*
* @param {number} decay - a number between 0 and 1. Higher values of
* this parameter will cause previous bandwidth estimates to lose
* significance more quickly.
* @return {Function} a function which can be invoked to create a new
* playlist selector function.
* @see https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
*/
const movingAverageBandwidthSelector = function (decay) {
let average = -1;
let lastSystemBandwidth = -1;
if (decay < 0 || decay > 1) {
throw new Error('Moving average bandwidth decay must be between 0 and 1.');
}
return function () {
let pixelRatio = this.useDevicePixelRatio ? window.devicePixelRatio || 1 : 1;
if (!isNaN(this.customPixelRatio)) {
pixelRatio = this.customPixelRatio;
}
if (average < 0) {
average = this.systemBandwidth;
lastSystemBandwidth = this.systemBandwidth;
} // stop the average value from decaying for every 250ms
// when the systemBandwidth is constant
// and
// stop average from setting to a very low value when the
// systemBandwidth becomes 0 in case of chunk cancellation
if (this.systemBandwidth > 0 && this.systemBandwidth !== lastSystemBandwidth) {
average = decay * this.systemBandwidth + (1 - decay) * average;
lastSystemBandwidth = this.systemBandwidth;
}
return simpleSelector(this.playlists.main, average, parseInt(safeGetComputedStyle(this.tech_.el(), 'width'), 10) * pixelRatio, parseInt(safeGetComputedStyle(this.tech_.el(), 'height'), 10) * pixelRatio, this.limitRenditionByPlayerDimensions, this.playlistController_);
};
};
/**
* Chooses the appropriate media playlist based on the potential to rebuffer
*
* @param {Object} settings
* Object of information required to use this selector
* @param {Object} settings.main
* Object representation of the main manifest
* @param {number} settings.currentTime
* The current time of the player
* @param {number} settings.bandwidth
* Current measured bandwidth
* @param {number} settings.duration
* Duration of the media
* @param {number} settings.segmentDuration
* Segment duration to be used in round trip time calculations
* @param {number} settings.timeUntilRebuffer
* Time left in seconds until the player has to rebuffer
* @param {number} settings.currentTimeline
* The current timeline segments are being loaded from
* @param {SyncController} settings.syncController
* SyncController for determining if we have a sync point for a given playlist
* @return {Object|null}
* {Object} return.playlist
* The highest bandwidth playlist with the least amount of rebuffering
* {Number} return.rebufferingImpact
* The amount of time in seconds switching to this playlist will rebuffer. A
* negative value means that switching will cause zero rebuffering.
*/
const minRebufferMaxBandwidthSelector = function (settings) {
const {
main,
currentTime,
bandwidth,
duration,
segmentDuration,
timeUntilRebuffer,
currentTimeline,
syncController
} = settings; // filter out any playlists that have been excluded due to
// incompatible configurations
const compatiblePlaylists = main.playlists.filter(playlist => !Playlist.isIncompatible(playlist)); // filter out any playlists that have been disabled manually through the representations
// api or excluded temporarily due to playback errors.
let enabledPlaylists = compatiblePlaylists.filter(Playlist.isEnabled);
if (!enabledPlaylists.length) {
// if there are no enabled playlists, then they have all been excluded or disabled
// by the user through the representations api. In this case, ignore exclusion and
// fallback to what the user wants by using playlists the user has not disabled.
enabledPlaylists = compatiblePlaylists.filter(playlist => !Playlist.isDisabled(playlist));
}
const bandwidthPlaylists = enabledPlaylists.filter(Playlist.hasAttribute.bind(null, 'BANDWIDTH'));
const rebufferingEstimates = bandwidthPlaylists.map(playlist => {
const syncPoint = syncController.getSyncPoint(playlist, duration, currentTimeline, currentTime); // If there is no sync point for this playlist, switching to it will require a
// sync request first. This will double the request time
const numRequests = syncPoint ? 1 : 2;
const requestTimeEstimate = Playlist.estimateSegmentRequestTime(segmentDuration, bandwidth, playlist);
const rebufferingImpact = requestTimeEstimate * numRequests - timeUntilRebuffer;
return {
playlist,
rebufferingImpact
};
});
const noRebufferingPlaylists = rebufferingEstimates.filter(estimate => estimate.rebufferingImpact <= 0); // Sort by bandwidth DESC
stableSort(noRebufferingPlaylists, (a, b) => comparePlaylistBandwidth(b.playlist, a.playlist));
if (noRebufferingPlaylists.length) {
return noRebufferingPlaylists[0];
}
stableSort(rebufferingEstimates, (a, b) => a.rebufferingImpact - b.rebufferingImpact);
return rebufferingEstimates[0] || null;
};
/**
* Chooses the appropriate media playlist, which in this case is the lowest bitrate
* one with video. If no renditions with video exist, return the lowest audio rendition.
*
* Expects to be called within the context of an instance of VhsHandler
*
* @return {Object|null}
* {Object} return.playlist
* The lowest bitrate playlist that contains a video codec. If no such rendition
* exists pick the lowest audio rendition.
*/
const lowestBitrateCompatibleVariantSelector = function () {
// filter out any playlists that have been excluded due to
// incompatible configurations or playback errors
const playlists = this.playlists.main.playlists.filter(Playlist.isEnabled); // Sort ascending by bitrate
stableSort(playlists, (a, b) => comparePlaylistBandwidth(a, b)); // Parse and assume that playlists with no video codec have no video
// (this is not necessarily true, although it is generally true).
//
// If an entire manifest has no valid videos everything will get filtered
// out.
const playlistsWithVideo = playlists.filter(playlist => !!codecsForPlaylist(this.playlists.main, playlist).video);
return playlistsWithVideo[0] || null;
};
/**
* Combine all segments into a single Uint8Array
*
* @param {Object} segmentObj
* @return {Uint8Array} concatenated bytes
* @private
*/
const concatSegments = segmentObj => {
let offset = 0;
let tempBuffer;
if (segmentObj.bytes) {
tempBuffer = new Uint8Array(segmentObj.bytes); // combine the individual segments into one large typed-array
segmentObj.segments.forEach(segment => {
tempBuffer.set(segment, offset);
offset += segment.byteLength;
});
}
return tempBuffer;
};
/**
* Example:
* https://host.com/path1/path2/path3/segment.ts?arg1=val1
* -->
* path3/segment.ts
*
* @param resolvedUri
* @return {string}
*/
function compactSegmentUrlDescription(resolvedUri) {
try {
return new URL(resolvedUri).pathname.split('/').slice(-2).join('/');
} catch (e) {
return '';
}
}
/**
* @file text-tracks.js
*/
/**
* Create captions text tracks on video.js if they do not exist
*
* @param {Object} inbandTextTracks a reference to current inbandTextTracks
* @param {Object} tech the video.js tech
* @param {Object} captionStream the caption stream to create
* @private
*/
const createCaptionsTrackIfNotExists = function (inbandTextTracks, tech, captionStream) {
if (!inbandTextTracks[captionStream]) {
tech.trigger({
type: 'usage',
name: 'vhs-608'
});
let instreamId = captionStream; // we need to translate SERVICEn for 708 to how mux.js currently labels them
if (/^cc708_/.test(captionStream)) {
instreamId = 'SERVICE' + captionStream.split('_')[1];
}
const track = tech.textTracks().getTrackById(instreamId);
if (track) {
// Resuse an existing track with a CC# id because this was
// very likely created by videojs-contrib-hls from information
// in the m3u8 for us to use
inbandTextTracks[captionStream] = track;
} else {
// This section gets called when we have caption services that aren't specified in the manifest.
// Manifest level caption services are handled in media-groups.js under CLOSED-CAPTIONS.
const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
let label = captionStream;
let language = captionStream;
let def = false;
const captionService = captionServices[instreamId];
if (captionService) {
label = captionService.label;
language = captionService.language;
def = captionService.default;
} // Otherwise, create a track with the default `CC#` label and
// without a language
inbandTextTracks[captionStream] = tech.addRemoteTextTrack({
kind: 'captions',
id: instreamId,
// TODO: investigate why this doesn't seem to turn the caption on by default
default: def,
label,
language
}, false).track;
}
}
};
/**
* Add caption text track data to a source handler given an array of captions
*
* @param {Object}
* @param {Object} inbandTextTracks the inband text tracks
* @param {number} timestampOffset the timestamp offset of the source buffer
* @param {Array} captionArray an array of caption data
* @private
*/
const addCaptionData = function ({
inbandTextTracks,
captionArray,
timestampOffset
}) {
if (!captionArray) {
return;
}
const Cue = window.WebKitDataCue || window.VTTCue;
captionArray.forEach(caption => {
const track = caption.stream; // in CEA 608 captions, video.js/mux.js sends a content array
// with positioning data
if (caption.content) {
caption.content.forEach(value => {
const cue = new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, value.text);
cue.line = value.line;
cue.align = 'left';
cue.position = value.position;
cue.positionAlign = 'line-left';
inbandTextTracks[track].addCue(cue);
});
} else {
// otherwise, a text value with combined captions is sent
inbandTextTracks[track].addCue(new Cue(caption.startTime + timestampOffset, caption.endTime + timestampOffset, caption.text));
}
});
};
/**
* Define properties on a cue for backwards compatability,
* but warn the user that the way that they are using it
* is depricated and will be removed at a later date.
*
* @param {Cue} cue the cue to add the properties on
* @private
*/
const deprecateOldCue = function (cue) {
Object.defineProperties(cue.frame, {
id: {
get() {
videojs.log.warn('cue.frame.id is deprecated. Use cue.value.key instead.');
return cue.value.key;
}
},
value: {
get() {
videojs.log.warn('cue.frame.value is deprecated. Use cue.value.data instead.');
return cue.value.data;
}
},
privateData: {
get() {
videojs.log.warn('cue.frame.privateData is deprecated. Use cue.value.data instead.');
return cue.value.data;
}
}
});
};
/**
* Add metadata text track data to a source handler given an array of metadata
*
* @param {Object}
* @param {Object} inbandTextTracks the inband text tracks
* @param {Array} metadataArray an array of meta data
* @param {number} timestampOffset the timestamp offset of the source buffer
* @param {number} videoDuration the duration of the video
* @private
*/
const addMetadata = ({
inbandTextTracks,
metadataArray,
timestampOffset,
videoDuration
}) => {
if (!metadataArray) {
return;
}
const Cue = window.WebKitDataCue || window.VTTCue;
const metadataTrack = inbandTextTracks.metadataTrack_;
if (!metadataTrack) {
return;
}
metadataArray.forEach(metadata => {
const time = metadata.cueTime + timestampOffset; // if time isn't a finite number between 0 and Infinity, like NaN,
// ignore this bit of metadata.
// This likely occurs when you have an non-timed ID3 tag like TIT2,
// which is the "Title/Songname/Content description" frame
if (typeof time !== 'number' || window.isNaN(time) || time < 0 || !(time < Infinity)) {
return;
} // If we have no frames, we can't create a cue.
if (!metadata.frames || !metadata.frames.length) {
return;
}
metadata.frames.forEach(frame => {
const cue = new Cue(time, time, frame.value || frame.url || frame.data || '');
cue.frame = frame;
cue.value = frame;
deprecateOldCue(cue);
metadataTrack.addCue(cue);
});
});
if (!metadataTrack.cues || !metadataTrack.cues.length) {
return;
} // Updating the metadeta cues so that
// the endTime of each cue is the startTime of the next cue
// the endTime of last cue is the duration of the video
const cues = metadataTrack.cues;
const cuesArray = []; // Create a copy of the TextTrackCueList...
// ...disregarding cues with a falsey value
for (let i = 0; i < cues.length; i++) {
if (cues[i]) {
cuesArray.push(cues[i]);
}
} // Group cues by their startTime value
const cuesGroupedByStartTime = cuesArray.reduce((obj, cue) => {
const timeSlot = obj[cue.startTime] || [];
timeSlot.push(cue);
obj[cue.startTime] = timeSlot;
return obj;
}, {}); // Sort startTimes by ascending order
const sortedStartTimes = Object.keys(cuesGroupedByStartTime).sort((a, b) => Number(a) - Number(b)); // Map each cue group's endTime to the next group's startTime
sortedStartTimes.forEach((startTime, idx) => {
const cueGroup = cuesGroupedByStartTime[startTime];
const finiteDuration = isFinite(videoDuration) ? videoDuration : startTime;
const nextTime = Number(sortedStartTimes[idx + 1]) || finiteDuration; // Map each cue's endTime the next group's startTime
cueGroup.forEach(cue => {
cue.endTime = nextTime;
});
});
}; // object for mapping daterange attributes
const dateRangeAttr = {
id: 'ID',
class: 'CLASS',
startDate: 'START-DATE',
duration: 'DURATION',
endDate: 'END-DATE',
endOnNext: 'END-ON-NEXT',
plannedDuration: 'PLANNED-DURATION',
scte35Out: 'SCTE35-OUT',
scte35In: 'SCTE35-IN'
};
const dateRangeKeysToOmit = new Set(['id', 'class', 'startDate', 'duration', 'endDate', 'endOnNext', 'startTime', 'endTime', 'processDateRange']);
/**
* Add DateRange metadata text track to a source handler given an array of metadata
*
* @param {Object}
* @param {Object} inbandTextTracks the inband text tracks
* @param {Array} dateRanges parsed media playlist
* @private
*/
const addDateRangeMetadata = ({
inbandTextTracks,
dateRanges
}) => {
const metadataTrack = inbandTextTracks.metadataTrack_;
if (!metadataTrack) {
return;
}
const Cue = window.WebKitDataCue || window.VTTCue;
dateRanges.forEach(dateRange => {
// we generate multiple cues for each date range with different attributes
for (const key of Object.keys(dateRange)) {
if (dateRangeKeysToOmit.has(key)) {
continue;
}
const cue = new Cue(dateRange.startTime, dateRange.endTime, '');
cue.id = dateRange.id;
cue.type = 'com.apple.quicktime.HLS';
cue.value = {
key: dateRangeAttr[key],
data: dateRange[key]
};
if (key === 'scte35Out' || key === 'scte35In') {
cue.value.data = new Uint8Array(cue.value.data.match(/[\da-f]{2}/gi)).buffer;
}
metadataTrack.addCue(cue);
}
dateRange.processDateRange();
});
};
/**
* Create metadata text track on video.js if it does not exist
*
* @param {Object} inbandTextTracks a reference to current inbandTextTracks
* @param {string} dispatchType the inband metadata track dispatch type
* @param {Object} tech the video.js tech
* @private
*/
const createMetadataTrackIfNotExists = (inbandTextTracks, dispatchType, tech) => {
if (inbandTextTracks.metadataTrack_) {
return;
}
inbandTextTracks.metadataTrack_ = tech.addRemoteTextTrack({
kind: 'metadata',
label: 'Timed Metadata'
}, false).track;
if (!videojs.browser.IS_ANY_SAFARI) {
inbandTextTracks.metadataTrack_.inBandMetadataTrackDispatchType = dispatchType;
}
};
/**
* Remove cues from a track on video.js.
*
* @param {Double} start start of where we should remove the cue
* @param {Double} end end of where the we should remove the cue
* @param {Object} track the text track to remove the cues from
* @private
*/
const removeCuesFromTrack = function (start, end, track) {
let i;
let cue;
if (!track) {
return;
}
if (!track.cues) {
return;
}
i = track.cues.length;
while (i--) {
cue = track.cues[i]; // Remove any cue within the provided start and end time
if (cue.startTime >= start && cue.endTime <= end) {
track.removeCue(cue);
}
}
};
/**
* Remove duplicate cues from a track on video.js (a cue is considered a
* duplicate if it has the same time interval and text as another)
*
* @param {Object} track the text track to remove the duplicate cues from
* @private
*/
const removeDuplicateCuesFromTrack = function (track) {
const cues = track.cues;
if (!cues) {
return;
}
const uniqueCues = {};
for (let i = cues.length - 1; i >= 0; i--) {
const cue = cues[i];
const cueKey = `${cue.startTime}-${cue.endTime}-${cue.text}`;
if (uniqueCues[cueKey]) {
track.removeCue(cue);
} else {
uniqueCues[cueKey] = cue;
}
}
};
/**
* Returns a list of gops in the buffer that have a pts value of 3 seconds or more in
* front of current time.
*
* @param {Array} buffer
* The current buffer of gop information
* @param {number} currentTime
* The current time
* @param {Double} mapping
* Offset to map display time to stream presentation time
* @return {Array}
* List of gops considered safe to append over
*/
const gopsSafeToAlignWith = (buffer, currentTime, mapping) => {
if (typeof currentTime === 'undefined' || currentTime === null || !buffer.length) {
return [];
} // pts value for current time + 3 seconds to give a bit more wiggle room
const currentTimePts = Math.ceil((currentTime - mapping + 3) * clock_1);
let i;
for (i = 0; i < buffer.length; i++) {
if (buffer[i].pts > currentTimePts) {
break;
}
}
return buffer.slice(i);
};
/**
* Appends gop information (timing and byteLength) received by the transmuxer for the
* gops appended in the last call to appendBuffer
*
* @param {Array} buffer
* The current buffer of gop information
* @param {Array} gops
* List of new gop information
* @param {boolean} replace
* If true, replace the buffer with the new gop information. If false, append the
* new gop information to the buffer in the right location of time.
* @return {Array}
* Updated list of gop information
*/
const updateGopBuffer = (buffer, gops, replace) => {
if (!gops.length) {
return buffer;
}
if (replace) {
// If we are in safe append mode, then completely overwrite the gop buffer
// with the most recent appeneded data. This will make sure that when appending
// future segments, we only try to align with gops that are both ahead of current
// time and in the last segment appended.
return gops.slice();
}
const start = gops[0].pts;
let i = 0;
for (i; i < buffer.length; i++) {
if (buffer[i].pts >= start) {
break;
}
}
return buffer.slice(0, i).concat(gops);
};
/**
* Removes gop information in buffer that overlaps with provided start and end
*
* @param {Array} buffer
* The current buffer of gop information
* @param {Double} start
* position to start the remove at
* @param {Double} end
* position to end the remove at
* @param {Double} mapping
* Offset to map display time to stream presentation time
*/
const removeGopBuffer = (buffer, start, end, mapping) => {
const startPts = Math.ceil((start - mapping) * clock_1);
const endPts = Math.ceil((end - mapping) * clock_1);
const updatedBuffer = buffer.slice();
let i = buffer.length;
while (i--) {
if (buffer[i].pts <= endPts) {
break;
}
}
if (i === -1) {
// no removal because end of remove range is before start of buffer
return updatedBuffer;
}
let j = i + 1;
while (j--) {
if (buffer[j].pts <= startPts) {
break;
}
} // clamp remove range start to 0 index
j = Math.max(j, 0);
updatedBuffer.splice(j, i - j + 1);
return updatedBuffer;
};
const shallowEqual = function (a, b) {
// if both are undefined
// or one or the other is undefined
// they are not equal
if (!a && !b || !a && b || a && !b) {
return false;
} // they are the same object and thus, equal
if (a === b) {
return true;
} // sort keys so we can make sure they have
// all the same keys later.
const akeys = Object.keys(a).sort();
const bkeys = Object.keys(b).sort(); // different number of keys, not equal
if (akeys.length !== bkeys.length) {
return false;
}
for (let i = 0; i < akeys.length; i++) {
const key = akeys[i]; // different sorted keys, not equal
if (key !== bkeys[i]) {
return false;
} // different values, not equal
if (a[key] !== b[key]) {
return false;
}
}
return true;
};
/**
* The segment loader has no recourse except to fetch a segment in the
* current playlist and use the internal timestamps in that segment to
* generate a syncPoint. This function returns a good candidate index
* for that process.
*
* @param {Array} segments - the segments array from a playlist.
* @return {number} An index of a segment from the playlist to load
*/
const getSyncSegmentCandidate = function (currentTimeline, segments, targetTime) {
segments = segments || [];
const timelineSegments = [];
let time = 0;
for (let i = 0; i < segments.length; i++) {
const segment = segments[i];
if (currentTimeline === segment.timeline) {
timelineSegments.push(i);
time += segment.duration;
if (time > targetTime) {
return i;
}
}
}
if (timelineSegments.length === 0) {
return 0;
} // default to the last timeline segment
return timelineSegments[timelineSegments.length - 1];
}; // In the event of a quota exceeded error, keep at least one second of back buffer. This
// number was arbitrarily chosen and may be updated in the future, but seemed reasonable
// as a start to prevent any potential issues with removing content too close to the
// playhead.
const MIN_BACK_BUFFER = 1; // in ms
const CHECK_BUFFER_DELAY = 500;
const finite = num => typeof num === 'number' && isFinite(num); // With most content hovering around 30fps, if a segment has a duration less than a half
// frame at 30fps or one frame at 60fps, the bandwidth and throughput calculations will
// not accurately reflect the rest of the content.
const MIN_SEGMENT_DURATION_TO_SAVE_STATS = 1 / 60;
const illegalMediaSwitch = (loaderType, startingMedia, trackInfo) => {
// Although these checks should most likely cover non 'main' types, for now it narrows
// the scope of our checks.
if (loaderType !== 'main' || !startingMedia || !trackInfo) {
return null;
}
if (!trackInfo.hasAudio && !trackInfo.hasVideo) {
return 'Neither audio nor video found in segment.';
}
if (startingMedia.hasVideo && !trackInfo.hasVideo) {
return 'Only audio found in segment when we expected video.' + ' We can\'t switch to audio only from a stream that had video.' + ' To get rid of this message, please add codec information to the manifest.';
}
if (!startingMedia.hasVideo && trackInfo.hasVideo) {
return 'Video found in segment when we expected only audio.' + ' We can\'t switch to a stream with video from an audio only stream.' + ' To get rid of this message, please add codec information to the manifest.';
}
return null;
};
/**
* Calculates a time value that is safe to remove from the back buffer without interrupting
* playback.
*
* @param {TimeRange} seekable
* The current seekable range
* @param {number} currentTime
* The current time of the player
* @param {number} targetDuration
* The target duration of the current playlist
* @return {number}
* Time that is safe to remove from the back buffer without interrupting playback
*/
const safeBackBufferTrimTime = (seekable, currentTime, targetDuration) => {
// 30 seconds before the playhead provides a safe default for trimming.
//
// Choosing a reasonable default is particularly important for high bitrate content and
// VOD videos/live streams with large windows, as the buffer may end up overfilled and
// throw an APPEND_BUFFER_ERR.
let trimTime = currentTime - Config.BACK_BUFFER_LENGTH;
if (seekable.length) {
// Some live playlists may have a shorter window of content than the full allowed back
// buffer. For these playlists, don't save content that's no longer within the window.
trimTime = Math.max(trimTime, seekable.start(0));
} // Don't remove within target duration of the current time to avoid the possibility of
// removing the GOP currently being played, as removing it can cause playback stalls.
const maxTrimTime = currentTime - targetDuration;
return Math.min(maxTrimTime, trimTime);
};
const segmentInfoString = segmentInfo => {
const {
startOfSegment,
duration,
segment,
part,
playlist: {
mediaSequence: seq,
id,
segments = []
},
mediaIndex: index,
partIndex,
timeline
} = segmentInfo;
const segmentLen = segments.length - 1;
let selection = 'mediaIndex/partIndex increment';
if (segmentInfo.getMediaInfoForTime) {
selection = `getMediaInfoForTime (${segmentInfo.getMediaInfoForTime})`;
} else if (segmentInfo.isSyncRequest) {
selection = 'getSyncSegmentCandidate (isSyncRequest)';
}
if (segmentInfo.independent) {
selection += ` with independent ${segmentInfo.independent}`;
}
const hasPartIndex = typeof partIndex === 'number';
const name = segmentInfo.segment.uri ? 'segment' : 'pre-segment';
const zeroBasedPartCount = hasPartIndex ? getKnownPartCount({
preloadSegment: segment
}) - 1 : 0;
return `${name} [${seq + index}/${seq + segmentLen}]` + (hasPartIndex ? ` part [${partIndex}/${zeroBasedPartCount}]` : '') + ` segment start/end [${segment.start} => ${segment.end}]` + (hasPartIndex ? ` part start/end [${part.start} => ${part.end}]` : '') + ` startOfSegment [${startOfSegment}]` + ` duration [${duration}]` + ` timeline [${timeline}]` + ` selected by [${selection}]` + ` playlist [${id}]`;
};
const timingInfoPropertyForMedia = mediaType => `${mediaType}TimingInfo`;
/**
* Returns the timestamp offset to use for the segment.
*
* @param {number} segmentTimeline
* The timeline of the segment
* @param {number} currentTimeline
* The timeline currently being followed by the loader
* @param {number} startOfSegment
* The estimated segment start
* @param {TimeRange[]} buffered
* The loader's buffer
* @param {boolean} overrideCheck
* If true, no checks are made to see if the timestamp offset value should be set,
* but sets it directly to a value.
*
* @return {number|null}
* Either a number representing a new timestamp offset, or null if the segment is
* part of the same timeline
*/
const timestampOffsetForSegment = ({
segmentTimeline,
currentTimeline,
startOfSegment,
buffered,
overrideCheck
}) => {
// Check to see if we are crossing a discontinuity to see if we need to set the
// timestamp offset on the transmuxer and source buffer.
//
// Previously, we changed the timestampOffset if the start of this segment was less than
// the currently set timestampOffset, but this isn't desirable as it can produce bad
// behavior, especially around long running live streams.
if (!overrideCheck && segmentTimeline === currentTimeline) {
return null;
} // When changing renditions, it's possible to request a segment on an older timeline. For
// instance, given two renditions with the following:
//
// #EXTINF:10
// segment1
// #EXT-X-DISCONTINUITY
// #EXTINF:10
// segment2
// #EXTINF:10
// segment3
//
// And the current player state:
//
// current time: 8
// buffer: 0 => 20
//
// The next segment on the current rendition would be segment3, filling the buffer from
// 20s onwards. However, if a rendition switch happens after segment2 was requested,
// then the next segment to be requested will be segment1 from the new rendition in
// order to fill time 8 and onwards. Using the buffered end would result in repeated
// content (since it would position segment1 of the new rendition starting at 20s). This
// case can be identified when the new segment's timeline is a prior value. Instead of
// using the buffered end, the startOfSegment can be used, which, hopefully, will be
// more accurate to the actual start time of the segment.
if (segmentTimeline < currentTimeline) {
return startOfSegment;
} // segmentInfo.startOfSegment used to be used as the timestamp offset, however, that
// value uses the end of the last segment if it is available. While this value
// should often be correct, it's better to rely on the buffered end, as the new
// content post discontinuity should line up with the buffered end as if it were
// time 0 for the new content.
return buffered.length ? buffered.end(buffered.length - 1) : startOfSegment;
};
/**
* Returns whether or not the loader should wait for a timeline change from the timeline
* change controller before processing the segment.
*
* Primary timing in VHS goes by video. This is different from most media players, as
* audio is more often used as the primary timing source. For the foreseeable future, VHS
* will continue to use video as the primary timing source, due to the current logic and
* expectations built around it.
* Since the timing follows video, in order to maintain sync, the video loader is
* responsible for setting both audio and video source buffer timestamp offsets.
*
* Setting different values for audio and video source buffers could lead to
* desyncing. The following examples demonstrate some of the situations where this
* distinction is important. Note that all of these cases involve demuxed content. When
* content is muxed, the audio and video are packaged together, therefore syncing
* separate media playlists is not an issue.
*
* CASE 1: Audio prepares to load a new timeline before video:
*
* Timeline: 0 1
* Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Audio Loader: ^
* Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Video Loader ^
*
* In the above example, the audio loader is preparing to load the 6th segment, the first
* after a discontinuity, while the video loader is still loading the 5th segment, before
* the discontinuity.
*
* If the audio loader goes ahead and loads and appends the 6th segment before the video
* loader crosses the discontinuity, then when appended, the 6th audio segment will use
* the timestamp offset from timeline 0. This will likely lead to desyncing. In addition,
* the audio loader must provide the audioAppendStart value to trim the content in the
* transmuxer, and that value relies on the audio timestamp offset. Since the audio
* timestamp offset is set by the video (main) loader, the audio loader shouldn't load the
* segment until that value is provided.
*
* CASE 2: Video prepares to load a new timeline before audio:
*
* Timeline: 0 1
* Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Audio Loader: ^
* Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Video Loader ^
*
* In the above example, the video loader is preparing to load the 6th segment, the first
* after a discontinuity, while the audio loader is still loading the 5th segment, before
* the discontinuity.
*
* If the video loader goes ahead and loads and appends the 6th segment, then once the
* segment is loaded and processed, both the video and audio timestamp offsets will be
* set, since video is used as the primary timing source. This is to ensure content lines
* up appropriately, as any modifications to the video timing are reflected by audio when
* the video loader sets the audio and video timestamp offsets to the same value. However,
* setting the timestamp offset for audio before audio has had a chance to change
* timelines will likely lead to desyncing, as the audio loader will append segment 5 with
* a timestamp intended to apply to segments from timeline 1 rather than timeline 0.
*
* CASE 3: When seeking, audio prepares to load a new timeline before video
*
* Timeline: 0 1
* Audio Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Audio Loader: ^
* Video Segments: 0 1 2 3 4 5 DISCO 6 7 8 9
* Video Loader ^
*
* In the above example, both audio and video loaders are loading segments from timeline
* 0, but imagine that the seek originated from timeline 1.
*
* When seeking to a new timeline, the timestamp offset will be set based on the expected
* segment start of the loaded video segment. In order to maintain sync, the audio loader
* must wait for the video loader to load its segment and update both the audio and video
* timestamp offsets before it may load and append its own segment. This is the case
* whether the seek results in a mismatched segment request (e.g., the audio loader
* chooses to load segment 3 and the video loader chooses to load segment 4) or the
* loaders choose to load the same segment index from each playlist, as the segments may
* not be aligned perfectly, even for matching segment indexes.
*
* @param {Object} timelinechangeController
* @param {number} currentTimeline
* The timeline currently being followed by the loader
* @param {number} segmentTimeline
* The timeline of the segment being loaded
* @param {('main'|'audio')} loaderType
* The loader type
* @param {boolean} audioDisabled
* Whether the audio is disabled for the loader. This should only be true when the
* loader may have muxed audio in its segment, but should not append it, e.g., for
* the main loader when an alternate audio playlist is active.
*
* @return {boolean}
* Whether the loader should wait for a timeline change from the timeline change
* controller before processing the segment
*/
const shouldWaitForTimelineChange = ({
timelineChangeController,
currentTimeline,
segmentTimeline,
loaderType,
audioDisabled
}) => {
if (currentTimeline === segmentTimeline) {
return false;
}
if (loaderType === 'audio') {
const lastMainTimelineChange = timelineChangeController.lastTimelineChange({
type: 'main'
}); // Audio loader should wait if:
//
// * main hasn't had a timeline change yet (thus has not loaded its first segment)
// * main hasn't yet changed to the timeline audio is looking to load
return !lastMainTimelineChange || lastMainTimelineChange.to !== segmentTimeline;
} // The main loader only needs to wait for timeline changes if there's demuxed audio.
// Otherwise, there's nothing to wait for, since audio would be muxed into the main
// loader's segments (or the content is audio/video only and handled by the main
// loader).
if (loaderType === 'main' && audioDisabled) {
const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({
type: 'audio'
}); // Main loader should wait for the audio loader if audio is not pending a timeline
// change to the current timeline.
//
// Since the main loader is responsible for setting the timestamp offset for both
// audio and video, the main loader must wait for audio to be about to change to its
// timeline before setting the offset, otherwise, if audio is behind in loading,
// segments from the previous timeline would be adjusted by the new timestamp offset.
//
// This requirement means that video will not cross a timeline until the audio is
// about to cross to it, so that way audio and video will always cross the timeline
// together.
//
// In addition to normal timeline changes, these rules also apply to the start of a
// stream (going from a non-existent timeline, -1, to timeline 0). It's important
// that these rules apply to the first timeline change because if they did not, it's
// possible that the main loader will cross two timelines before the audio loader has
// crossed one. Logic may be implemented to handle the startup as a special case, but
// it's easier to simply treat all timeline changes the same.
if (pendingAudioTimelineChange && pendingAudioTimelineChange.to === segmentTimeline) {
return false;
}
return true;
}
return false;
};
const shouldFixBadTimelineChanges = timelineChangeController => {
if (!timelineChangeController) {
return false;
}
const pendingAudioTimelineChange = timelineChangeController.pendingTimelineChange({
type: 'audio'
});
const pendingMainTimelineChange = timelineChangeController.pendingTimelineChange({
type: 'main'
});
const hasPendingTimelineChanges = pendingAudioTimelineChange && pendingMainTimelineChange;
const differentPendingChanges = hasPendingTimelineChanges && pendingAudioTimelineChange.to !== pendingMainTimelineChange.to;
const isNotInitialPendingTimelineChange = hasPendingTimelineChanges && pendingAudioTimelineChange.from !== -1 && pendingMainTimelineChange.from !== -1;
if (isNotInitialPendingTimelineChange && differentPendingChanges) {
return true;
}
return false;
};
/**
* Fixes certain bad timeline scenarios by resetting the loader.
*
* @param {SegmentLoader} segmentLoader
*/
const fixBadTimelineChange = segmentLoader => {
if (!segmentLoader) {
return;
}
segmentLoader.pause();
segmentLoader.resetEverything();
segmentLoader.load();
};
/**
* Check if the pending audio timeline change is behind the
* pending main timeline change.
*
* @param {SegmentLoader} segmentLoader
* @return {boolean}
*/
const isAudioTimelineBehind = segmentLoader => {
const pendingAudioTimelineChange = segmentLoader.timelineChangeController_.pendingTimelineChange({
type: 'audio'
});
const pendingMainTimelineChange = segmentLoader.timelineChangeController_.pendingTimelineChange({
type: 'main'
});
const hasPendingTimelineChanges = pendingAudioTimelineChange && pendingMainTimelineChange;
return hasPendingTimelineChanges && pendingAudioTimelineChange.to < pendingMainTimelineChange.to;
};
/**
* A method to check if the player is waiting for a timeline change, and fixes
* certain scenarios where the timelines need to be updated.
*
* @param {SegmentLoader} segmentLoader
*/
const checkAndFixTimelines = segmentLoader => {
const segmentInfo = segmentLoader.pendingSegment_;
if (!segmentInfo) {
return;
}
const waitingForTimelineChange = shouldWaitForTimelineChange({
timelineChangeController: segmentLoader.timelineChangeController_,
currentTimeline: segmentLoader.currentTimeline_,
segmentTimeline: segmentInfo.timeline,
loaderType: segmentLoader.loaderType_,
audioDisabled: segmentLoader.audioDisabled_
});
if (waitingForTimelineChange && shouldFixBadTimelineChanges(segmentLoader.timelineChangeController_)) {
// Audio being behind should only happen on DASH sources.
if (segmentLoader.sourceType_ === 'dash' && isAudioTimelineBehind(segmentLoader)) {
segmentLoader.timelineChangeController_.trigger('audioTimelineBehind');
return;
}
fixBadTimelineChange(segmentLoader);
}
};
const mediaDuration = timingInfos => {
let maxDuration = 0;
['video', 'audio'].forEach(function (type) {
const typeTimingInfo = timingInfos[`${type}TimingInfo`];
if (!typeTimingInfo) {
return;
}
const {
start,
end
} = typeTimingInfo;
let duration;
if (typeof start === 'bigint' || typeof end === 'bigint') {
duration = window.BigInt(end) - window.BigInt(start);
} else if (typeof start === 'number' && typeof end === 'number') {
duration = end - start;
}
if (typeof duration !== 'undefined' && duration > maxDuration) {
maxDuration = duration;
}
}); // convert back to a number if it is lower than MAX_SAFE_INTEGER
// as we only need BigInt when we are above that.
if (typeof maxDuration === 'bigint' && maxDuration < Number.MAX_SAFE_INTEGER) {
maxDuration = Number(maxDuration);
}
return maxDuration;
};
const segmentTooLong = ({
segmentDuration,
maxDuration
}) => {
// 0 duration segments are most likely due to metadata only segments or a lack of
// information.
if (!segmentDuration) {
return false;
} // For HLS:
//
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1
// The EXTINF duration of each Media Segment in the Playlist
// file, when rounded to the nearest integer, MUST be less than or equal
// to the target duration; longer segments can trigger playback stalls
// or other errors.
//
// For DASH, the mpd-parser uses the largest reported segment duration as the target
// duration. Although that reported duration is occasionally approximate (i.e., not
// exact), a strict check may report that a segment is too long more often in DASH.
return Math.round(segmentDuration) > maxDuration + TIME_FUDGE_FACTOR;
};
const getTroublesomeSegmentDurationMessage = (segmentInfo, sourceType) => {
// Right now we aren't following DASH's timing model exactly, so only perform
// this check for HLS content.
if (sourceType !== 'hls') {
return null;
}
const segmentDuration = mediaDuration({
audioTimingInfo: segmentInfo.audioTimingInfo,
videoTimingInfo: segmentInfo.videoTimingInfo
}); // Don't report if we lack information.
//
// If the segment has a duration of 0 it is either a lack of information or a
// metadata only segment and shouldn't be reported here.
if (!segmentDuration) {
return null;
}
const targetDuration = segmentInfo.playlist.targetDuration;
const isSegmentWayTooLong = segmentTooLong({
segmentDuration,
maxDuration: targetDuration * 2
});
const isSegmentSlightlyTooLong = segmentTooLong({
segmentDuration,
maxDuration: targetDuration
});
const segmentTooLongMessage = `Segment with index ${segmentInfo.mediaIndex} ` + `from playlist ${segmentInfo.playlist.id} ` + `has a duration of ${segmentDuration} ` + `when the reported duration is ${segmentInfo.duration} ` + `and the target duration is ${targetDuration}. ` + 'For HLS content, a duration in excess of the target duration may result in ' + 'playback issues. See the HLS specification section on EXT-X-TARGETDURATION for ' + 'more details: ' + 'https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.3.1';
if (isSegmentWayTooLong || isSegmentSlightlyTooLong) {
return {
severity: isSegmentWayTooLong ? 'warn' : 'info',
message: segmentTooLongMessage
};
}
return null;
};
/**
*
* @param {Object} options type of segment loader and segment either segmentInfo or simple segment
* @return a segmentInfo payload for events or errors.
*/
const segmentInfoPayload = ({
type,
segment
}) => {
if (!segment) {
return;
}
const isEncrypted = Boolean(segment.key || segment.map && segment.map.ke);
const isMediaInitialization = Boolean(segment.map && !segment.map.bytes);
const start = segment.startOfSegment === undefined ? segment.start : segment.startOfSegment;
return {
type: type || segment.type,
uri: segment.resolvedUri || segment.uri,
start,
duration: segment.duration,
isEncrypted,
isMediaInitialization
};
};
/**
* An object that manages segment loading and appending.
*
* @class SegmentLoader
* @param {Object} options required and optional options
* @extends videojs.EventTarget
*/
class SegmentLoader extends videojs.EventTarget {
constructor(settings, options = {}) {
super(); // check pre-conditions
if (!settings) {
throw new TypeError('Initialization settings are required');
}
if (typeof settings.currentTime !== 'function') {
throw new TypeError('No currentTime getter specified');
}
if (!settings.mediaSource) {
throw new TypeError('No MediaSource specified');
} // public properties
this.bandwidth = settings.bandwidth;
this.throughput = {
rate: 0,
count: 0
};
this.roundTrip = NaN;
this.resetStats_();
this.mediaIndex = null;
this.partIndex = null; // private settings
this.hasPlayed_ = settings.hasPlayed;
this.currentTime_ = settings.currentTime;
this.seekable_ = settings.seekable;
this.seeking_ = settings.seeking;
this.duration_ = settings.duration;
this.mediaSource_ = settings.mediaSource;
this.vhs_ = settings.vhs;
this.loaderType_ = settings.loaderType;
this.currentMediaInfo_ = void 0;
this.startingMediaInfo_ = void 0;
this.segmentMetadataTrack_ = settings.segmentMetadataTrack;
this.goalBufferLength_ = settings.goalBufferLength;
this.sourceType_ = settings.sourceType;
this.sourceUpdater_ = settings.sourceUpdater;
this.inbandTextTracks_ = settings.inbandTextTracks;
this.state_ = 'INIT';
this.timelineChangeController_ = settings.timelineChangeController;
this.shouldSaveSegmentTimingInfo_ = true;
this.parse708captions_ = settings.parse708captions;
this.useDtsForTimestampOffset_ = settings.useDtsForTimestampOffset;
this.captionServices_ = settings.captionServices;
this.exactManifestTimings = settings.exactManifestTimings;
this.addMetadataToTextTrack = settings.addMetadataToTextTrack; // private instance variables
this.checkBufferTimeout_ = null;
this.error_ = void 0;
this.currentTimeline_ = -1;
this.shouldForceTimestampOffsetAfterResync_ = false;
this.pendingSegment_ = null;
this.xhrOptions_ = null;
this.pendingSegments_ = [];
this.audioDisabled_ = false;
this.isPendingTimestampOffset_ = false; // TODO possibly move gopBuffer and timeMapping info to a separate controller
this.gopBuffer_ = [];
this.timeMapping_ = 0;
this.safeAppend_ = false;
this.appendInitSegment_ = {
audio: true,
video: true
};
this.playlistOfLastInitSegment_ = {
audio: null,
video: null
};
this.callQueue_ = []; // If the segment loader prepares to load a segment, but does not have enough
// information yet to start the loading process (e.g., if the audio loader wants to
// load a segment from the next timeline but the main loader hasn't yet crossed that
// timeline), then the load call will be added to the queue until it is ready to be
// processed.
this.loadQueue_ = [];
this.metadataQueue_ = {
id3: [],
caption: []
};
this.waitingOnRemove_ = false;
this.quotaExceededErrorRetryTimeout_ = null; // Fragmented mp4 playback
this.activeInitSegmentId_ = null;
this.initSegments_ = {}; // HLSe playback
this.cacheEncryptionKeys_ = settings.cacheEncryptionKeys;
this.keyCache_ = {};
this.decrypter_ = settings.decrypter; // Manages the tracking and generation of sync-points, mappings
// between a time in the display time and a segment index within
// a playlist
this.syncController_ = settings.syncController;
this.syncPoint_ = {
segmentIndex: 0,
time: 0
};
this.transmuxer_ = this.createTransmuxer_();
this.triggerSyncInfoUpdate_ = () => this.trigger('syncinfoupdate');
this.syncController_.on('syncinfoupdate', this.triggerSyncInfoUpdate_);
this.mediaSource_.addEventListener('sourceopen', () => {
if (!this.isEndOfStream_()) {
this.ended_ = false;
}
}); // ...for determining the fetch location
this.fetchAtBuffer_ = false;
this.logger_ = logger(`SegmentLoader[${this.loaderType_}]`);
Object.defineProperty(this, 'state', {
get() {
return this.state_;
},
set(newState) {
if (newState !== this.state_) {
this.logger_(`${this.state_} -> ${newState}`);
this.state_ = newState;
this.trigger('statechange');
}
}
});
this.sourceUpdater_.on('ready', () => {
if (this.hasEnoughInfoToAppend_()) {
this.processCallQueue_();
} else {
checkAndFixTimelines(this);
}
});
this.sourceUpdater_.on('codecschange', metadata => {
this.trigger(_extends$1({
type: 'codecschange'
}, metadata));
}); // Only the main loader needs to listen for pending timeline changes, as the main
// loader should wait for audio to be ready to change its timeline so that both main
// and audio timelines change together. For more details, see the
// shouldWaitForTimelineChange function.
if (this.loaderType_ === 'main') {
this.timelineChangeController_.on('pendingtimelinechange', () => {
if (this.hasEnoughInfoToAppend_()) {
this.processCallQueue_();
} else {
checkAndFixTimelines(this);
}
});
} // The main loader only listens on pending timeline changes, but the audio loader,
// since its loads follow main, needs to listen on timeline changes. For more details,
// see the shouldWaitForTimelineChange function.
if (this.loaderType_ === 'audio') {
this.timelineChangeController_.on('timelinechange', metadata => {
this.trigger(_extends$1({
type: 'timelinechange'
}, metadata));
if (this.hasEnoughInfoToLoad_()) {
this.processLoadQueue_();
} else {
checkAndFixTimelines(this);
}
if (this.hasEnoughInfoToAppend_()) {
this.processCallQueue_();
} else {
checkAndFixTimelines(this);
}
});
}
}
/**
* TODO: Current sync controller consists of many hls-specific strategies
* media sequence sync is also hls-specific, and we would like to be protocol-agnostic on this level
* this should be a part of the sync-controller and sync controller should expect different strategy list based on the protocol.
*
* @return {MediaSequenceSync|null}
* @private
*/
get mediaSequenceSync_() {
return this.syncController_.getMediaSequenceSync(this.loaderType_);
}
createTransmuxer_() {
return segmentTransmuxer.createTransmuxer({
remux: false,
alignGopsAtEnd: this.safeAppend_,
keepOriginalTimestamps: true,
parse708captions: this.parse708captions_,
captionServices: this.captionServices_
});
}
/**
* reset all of our media stats
*
* @private
*/
resetStats_() {
this.mediaBytesTransferred = 0;
this.mediaRequests = 0;
this.mediaRequestsAborted = 0;
this.mediaRequestsTimedout = 0;
this.mediaRequestsErrored = 0;
this.mediaTransferDuration = 0;
this.mediaSecondsLoaded = 0;
this.mediaAppends = 0;
}
/**
* dispose of the SegmentLoader and reset to the default state
*/
dispose() {
this.trigger('dispose');
this.state = 'DISPOSED';
this.pause();
this.abort_();
if (this.transmuxer_) {
this.transmuxer_.terminate();
}
this.resetStats_();
if (this.checkBufferTimeout_) {
window.clearTimeout(this.checkBufferTimeout_);
}
if (this.syncController_ && this.triggerSyncInfoUpdate_) {
this.syncController_.off('syncinfoupdate', this.triggerSyncInfoUpdate_);
}
this.off();
}
setAudio(enable) {
this.audioDisabled_ = !enable;
if (enable) {
this.appendInitSegment_.audio = true;
} else {
// remove current track audio if it gets disabled
this.sourceUpdater_.removeAudio(0, this.duration_());
}
}
/**
* abort anything that is currently doing on with the SegmentLoader
* and reset to a default state
*/
abort() {
if (this.state !== 'WAITING') {
if (this.pendingSegment_) {
this.pendingSegment_ = null;
}
return;
}
this.abort_(); // We aborted the requests we were waiting on, so reset the loader's state to READY
// since we are no longer "waiting" on any requests. XHR callback is not always run
// when the request is aborted. This will prevent the loader from being stuck in the
// WAITING state indefinitely.
this.state = 'READY'; // don't wait for buffer check timeouts to begin fetching the
// next segment
if (!this.paused()) {
this.monitorBuffer_();
}
}
/**
* abort all pending xhr requests and null any pending segements
*
* @private
*/
abort_() {
if (this.pendingSegment_ && this.pendingSegment_.abortRequests) {
this.pendingSegment_.abortRequests();
} // clear out the segment being processed
this.pendingSegment_ = null;
this.callQueue_ = [];
this.loadQueue_ = [];
this.metadataQueue_.id3 = [];
this.metadataQueue_.caption = [];
this.timelineChangeController_.clearPendingTimelineChange(this.loaderType_);
this.waitingOnRemove_ = false;
window.clearTimeout(this.quotaExceededErrorRetryTimeout_);
this.quotaExceededErrorRetryTimeout_ = null;
}
checkForAbort_(requestId) {
// If the state is APPENDING, then aborts will not modify the state, meaning the first
// callback that happens should reset the state to READY so that loading can continue.
if (this.state === 'APPENDING' && !this.pendingSegment_) {
this.state = 'READY';
return true;
}
if (!this.pendingSegment_ || this.pendingSegment_.requestId !== requestId) {
return true;
}
return false;
}
/**
* set an error on the segment loader and null out any pending segements
*
* @param {Error} error the error to set on the SegmentLoader
* @return {Error} the error that was set or that is currently set
*/
error(error) {
if (typeof error !== 'undefined') {
this.logger_('error occurred:', error);
this.error_ = error;
}
this.pendingSegment_ = null;
return this.error_;
}
endOfStream() {
this.ended_ = true;
if (this.transmuxer_) {
// need to clear out any cached data to prepare for the new segment
segmentTransmuxer.reset(this.transmuxer_);
}
this.gopBuffer_.length = 0;
this.pause();
this.trigger('ended');
}
/**
* Indicates which time ranges are buffered
*
* @return {TimeRange}
* TimeRange object representing the current buffered ranges
*/
buffered_() {
const trackInfo = this.getMediaInfo_();
if (!this.sourceUpdater_ || !trackInfo) {
return createTimeRanges();
}
if (this.loaderType_ === 'main') {
const {
hasAudio,
hasVideo,
isMuxed
} = trackInfo;
if (hasVideo && hasAudio && !this.audioDisabled_ && !isMuxed) {
return this.sourceUpdater_.buffered();
}
if (hasVideo) {
return this.sourceUpdater_.videoBuffered();
}
} // One case that can be ignored for now is audio only with alt audio,
// as we don't yet have proper support for that.
return this.sourceUpdater_.audioBuffered();
}
/**
* Gets and sets init segment for the provided map
*
* @param {Object} map
* The map object representing the init segment to get or set
* @param {boolean=} set
* If true, the init segment for the provided map should be saved
* @return {Object}
* map object for desired init segment
*/
initSegmentForMap(map, set = false) {
if (!map) {
return null;
}
const id = initSegmentId(map);
let storedMap = this.initSegments_[id];
if (set && !storedMap && map.bytes) {
this.initSegments_[id] = storedMap = {
resolvedUri: map.resolvedUri,
byterange: map.byterange,
bytes: map.bytes,
tracks: map.tracks,
timescales: map.timescales
};
}
return storedMap || map;
}
/**
* Gets and sets key for the provided key
*
* @param {Object} key
* The key object representing the key to get or set
* @param {boolean=} set
* If true, the key for the provided key should be saved
* @return {Object}
* Key object for desired key
*/
segmentKey(key, set = false) {
if (!key) {
return null;
}
const id = segmentKeyId(key);
let storedKey = this.keyCache_[id]; // TODO: We should use the HTTP Expires header to invalidate our cache per
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-6.2.3
if (this.cacheEncryptionKeys_ && set && !storedKey && key.bytes) {
this.keyCache_[id] = storedKey = {
resolvedUri: key.resolvedUri,
bytes: key.bytes
};
}
const result = {
resolvedUri: (storedKey || key).resolvedUri
};
if (storedKey) {
result.bytes = storedKey.bytes;
}
return result;
}
/**
* Returns true if all configuration required for loading is present, otherwise false.
*
* @return {boolean} True if the all configuration is ready for loading
* @private
*/
couldBeginLoading_() {
return this.playlist_ && !this.paused();
}
/**
* load a playlist and start to fill the buffer
*/
load() {
// un-pause
this.monitorBuffer_(); // if we don't have a playlist yet, keep waiting for one to be
// specified
if (!this.playlist_) {
return;
} // if all the configuration is ready, initialize and begin loading
if (this.state === 'INIT' && this.couldBeginLoading_()) {
return this.init_();
} // if we're in the middle of processing a segment already, don't
// kick off an additional segment request
if (!this.couldBeginLoading_() || this.state !== 'READY' && this.state !== 'INIT') {
return;
}
this.state = 'READY';
}
/**
* Once all the starting parameters have been specified, begin
* operation. This method should only be invoked from the INIT
* state.
*
* @private
*/
init_() {
this.state = 'READY'; // if this is the audio segment loader, and it hasn't been inited before, then any old
// audio data from the muxed content should be removed
this.resetEverything();
return this.monitorBuffer_();
}
/**
* set a playlist on the segment loader
*
* @param {PlaylistLoader} media the playlist to set on the segment loader
*/
playlist(newPlaylist, options = {}) {
if (!newPlaylist) {
return;
}
const oldPlaylist = this.playlist_;
const segmentInfo = this.pendingSegment_;
this.playlist_ = newPlaylist;
this.xhrOptions_ = options; // when we haven't started playing yet, the start of a live playlist
// is always our zero-time so force a sync update each time the playlist
// is refreshed from the server
//
// Use the INIT state to determine if playback has started, as the playlist sync info
// should be fixed once requests begin (as sync points are generated based on sync
// info), but not before then.
if (this.state === 'INIT') {
newPlaylist.syncInfo = {
mediaSequence: newPlaylist.mediaSequence,
time: 0
}; // Setting the date time mapping means mapping the program date time (if available)
// to time 0 on the player's timeline. The playlist's syncInfo serves a similar
// purpose, mapping the initial mediaSequence to time zero. Since the syncInfo can
// be updated as the playlist is refreshed before the loader starts loading, the
// program date time mapping needs to be updated as well.
//
// This mapping is only done for the main loader because a program date time should
// map equivalently between playlists.
if (this.loaderType_ === 'main') {
this.syncController_.setDateTimeMappingForStart(newPlaylist);
}
}
let oldId = null;
if (oldPlaylist) {
if (oldPlaylist.id) {
oldId = oldPlaylist.id;
} else if (oldPlaylist.uri) {
oldId = oldPlaylist.uri;
}
}
this.logger_(`playlist update [${oldId} => ${newPlaylist.id || newPlaylist.uri}]`);
if (this.mediaSequenceSync_) {
this.mediaSequenceSync_.update(newPlaylist, this.currentTime_());
this.logger_(`Playlist update:
currentTime: ${this.currentTime_()}
bufferedEnd: ${lastBufferedEnd(this.buffered_())}
`, this.mediaSequenceSync_.diagnostics);
} // in VOD, this is always a rendition switch (or we updated our syncInfo above)
// in LIVE, we always want to update with new playlists (including refreshes)
this.trigger('syncinfoupdate'); // if we were unpaused but waiting for a playlist, start
// buffering now
if (this.state === 'INIT' && this.couldBeginLoading_()) {
return this.init_();
}
if (!oldPlaylist || oldPlaylist.uri !== newPlaylist.uri) {
if (this.mediaIndex !== null) {
// we must reset/resync the segment loader when we switch renditions and
// the segment loader is already synced to the previous rendition
// We only want to reset the loader here for LLHLS playback, as resetLoader sets fetchAtBuffer_
// to false, resulting in fetching segments at currentTime and causing repeated
// same-segment requests on playlist change. This erroneously drives up the playback watcher
// stalled segment count, as re-requesting segments at the currentTime or browser cached segments
// will not change the buffer.
// Reference for LLHLS fixes: https://github.com/videojs/http-streaming/pull/1201
const isLLHLS = !newPlaylist.endList && typeof newPlaylist.partTargetDuration === 'number';
if (isLLHLS) {
this.resetLoader();
} else {
this.resyncLoader();
}
}
this.currentMediaInfo_ = void 0;
this.trigger('playlistupdate'); // the rest of this function depends on `oldPlaylist` being defined
return;
} // we reloaded the same playlist so we are in a live scenario
// and we will likely need to adjust the mediaIndex
const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence;
this.logger_(`live window shift [${mediaSequenceDiff}]`); // update the mediaIndex on the SegmentLoader
// this is important because we can abort a request and this value must be
// equal to the last appended mediaIndex
if (this.mediaIndex !== null) {
this.mediaIndex -= mediaSequenceDiff; // this can happen if we are going to load the first segment, but get a playlist
// update during that. mediaIndex would go from 0 to -1 if mediaSequence in the
// new playlist was incremented by 1.
if (this.mediaIndex < 0) {
this.mediaIndex = null;
this.partIndex = null;
} else {
const segment = this.playlist_.segments[this.mediaIndex]; // partIndex should remain the same for the same segment
// unless parts fell off of the playlist for this segment.
// In that case we need to reset partIndex and resync
if (this.partIndex && (!segment.parts || !segment.parts.length || !segment.parts[this.partIndex])) {
const mediaIndex = this.mediaIndex;
this.logger_(`currently processing part (index ${this.partIndex}) no longer exists.`);
this.resetLoader(); // We want to throw away the partIndex and the data associated with it,
// as the part was dropped from our current playlists segment.
// The mediaIndex will still be valid so keep that around.
this.mediaIndex = mediaIndex;
}
}
} // update the mediaIndex on the SegmentInfo object
// this is important because we will update this.mediaIndex with this value
// in `handleAppendsDone_` after the segment has been successfully appended
if (segmentInfo) {
segmentInfo.mediaIndex -= mediaSequenceDiff;
if (segmentInfo.mediaIndex < 0) {
segmentInfo.mediaIndex = null;
segmentInfo.partIndex = null;
} else {
// we need to update the referenced segment so that timing information is
// saved for the new playlist's segment, however, if the segment fell off the
// playlist, we can leave the old reference and just lose the timing info
if (segmentInfo.mediaIndex >= 0) {
segmentInfo.segment = newPlaylist.segments[segmentInfo.mediaIndex];
}
if (segmentInfo.partIndex >= 0 && segmentInfo.segment.parts) {
segmentInfo.part = segmentInfo.segment.parts[segmentInfo.partIndex];
}
}
}
this.syncController_.saveExpiredSegmentInfo(oldPlaylist, newPlaylist);
}
/**
* Prevent the loader from fetching additional segments. If there
* is a segment request outstanding, it will finish processing
* before the loader halts. A segment loader can be unpaused by
* calling load().
*/
pause() {
if (this.checkBufferTimeout_) {
window.clearTimeout(this.checkBufferTimeout_);
this.checkBufferTimeout_ = null;
}
}
/**
* Returns whether the segment loader is fetching additional
* segments when given the opportunity. This property can be
* modified through calls to pause() and load().
*/
paused() {
return this.checkBufferTimeout_ === null;
}
/**
* Delete all the buffered data and reset the SegmentLoader
*
* @param {Function} [done] an optional callback to be executed when the remove
* operation is complete
*/
resetEverything(done) {
this.ended_ = false;
this.activeInitSegmentId_ = null;
this.appendInitSegment_ = {
audio: true,
video: true
};
this.resetLoader(); // remove from 0, the earliest point, to Infinity, to signify removal of everything.
// VTT Segment Loader doesn't need to do anything but in the regular SegmentLoader,
// we then clamp the value to duration if necessary.
this.remove(0, Infinity, done); // clears fmp4 captions
if (this.transmuxer_) {
this.transmuxer_.postMessage({
action: 'clearAllMp4Captions'
}); // reset the cache in the transmuxer
this.transmuxer_.postMessage({
action: 'reset'
});
}
}
/**
* Force the SegmentLoader to resync and start loading around the currentTime instead
* of starting at the end of the buffer
*
* Useful for fast quality changes
*/
resetLoader() {
this.fetchAtBuffer_ = false;
if (this.mediaSequenceSync_) {
this.mediaSequenceSync_.resetAppendedStatus();
}
this.resyncLoader();
}
/**
* Force the SegmentLoader to restart synchronization and make a conservative guess
* before returning to the simple walk-forward method
*/
resyncLoader() {
if (this.transmuxer_) {
// need to clear out any cached data to prepare for the new segment
segmentTransmuxer.reset(this.transmuxer_);
}
this.mediaIndex = null;
this.partIndex = null;
this.syncPoint_ = null;
this.isPendingTimestampOffset_ = false; // this is mainly to sync timing-info when switching between renditions with and without timestamp-rollover,
// so we don't want it for DASH or fragmented mp4 segments.
const isFmp4 = this.currentMediaInfo_ && this.currentMediaInfo_.isFmp4;
const isHlsTs = this.sourceType_ === 'hls' && !isFmp4;
if (isHlsTs) {
this.shouldForceTimestampOffsetAfterResync_ = true;
}
this.callQueue_ = [];
this.loadQueue_ = [];
this.metadataQueue_.id3 = [];
this.metadataQueue_.caption = [];
this.abort();
if (this.transmuxer_) {
this.transmuxer_.postMessage({
action: 'clearParsedMp4Captions'
});
}
}
/**
* Remove any data in the source buffer between start and end times
*
* @param {number} start - the start time of the region to remove from the buffer
* @param {number} end - the end time of the region to remove from the buffer
* @param {Function} [done] - an optional callback to be executed when the remove
* @param {boolean} force - force all remove operations to happen
* operation is complete
*/
remove(start, end, done = () => {}, force = false) {
// clamp end to duration if we need to remove everything.
// This is due to a browser bug that causes issues if we remove to Infinity.
// videojs/videojs-contrib-hls#1225
if (end === Infinity) {
end = this.duration_();
} // skip removes that would throw an error
// commonly happens during a rendition switch at the start of a video
// from start 0 to end 0
if (end <= start) {
this.logger_('skipping remove because end ${end} is <= start ${start}');
return;
}
if (!this.sourceUpdater_ || !this.getMediaInfo_()) {
this.logger_('skipping remove because no source updater or starting media info'); // nothing to remove if we haven't processed any media
return;
} // set it to one to complete this function's removes
let removesRemaining = 1;
const removeFinished = () => {
removesRemaining--;
if (removesRemaining === 0) {
done();
}
};
if (force || !this.audioDisabled_) {
removesRemaining++;
this.sourceUpdater_.removeAudio(start, end, removeFinished);
} // While it would be better to only remove video if the main loader has video, this
// should be safe with audio only as removeVideo will call back even if there's no
// video buffer.
//
// In theory we can check to see if there's video before calling the remove, but in
// the event that we're switching between renditions and from video to audio only
// (when we add support for that), we may need to clear the video contents despite
// what the new media will contain.
if (force || this.loaderType_ === 'main') {
this.gopBuffer_ = removeGopBuffer(this.gopBuffer_, start, end, this.timeMapping_);
removesRemaining++;
this.sourceUpdater_.removeVideo(start, end, removeFinished);
} // remove any captions and ID3 tags
for (const track in this.inbandTextTracks_) {
removeCuesFromTrack(start, end, this.inbandTextTracks_[track]);
}
removeCuesFromTrack(start, end, this.segmentMetadataTrack_); // finished this function's removes
removeFinished();
}
/**
* (re-)schedule monitorBufferTick_ to run as soon as possible
*
* @private
*/
monitorBuffer_() {
if (this.checkBufferTimeout_) {
window.clearTimeout(this.checkBufferTimeout_);
}
this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), 1);
}
/**
* As long as the SegmentLoader is in the READY state, periodically
* invoke fillBuffer_().
*
* @private
*/
monitorBufferTick_() {
if (this.state === 'READY') {
this.fillBuffer_();
}
if (this.checkBufferTimeout_) {
window.clearTimeout(this.checkBufferTimeout_);
}
this.checkBufferTimeout_ = window.setTimeout(this.monitorBufferTick_.bind(this), CHECK_BUFFER_DELAY);
}
/**
* fill the buffer with segements unless the sourceBuffers are
* currently updating
*
* Note: this function should only ever be called by monitorBuffer_
* and never directly
*
* @private
*/
fillBuffer_() {
// TODO since the source buffer maintains a queue, and we shouldn't call this function
// except when we're ready for the next segment, this check can most likely be removed
if (this.sourceUpdater_.updating()) {
return;
} // see if we need to begin loading immediately
const segmentInfo = this.chooseNextRequest_();
if (!segmentInfo) {
return;
}
const metadata = {
segmentInfo: segmentInfoPayload({
type: this.loaderType_,
segment: segmentInfo
})
};
this.trigger({
type: 'segmentselected',
metadata
});
if (typeof segmentInfo.timestampOffset === 'number') {
this.isPendingTimestampOffset_ = false;
this.timelineChangeController_.pendingTimelineChange({
type: this.loaderType_,
from: this.currentTimeline_,
to: segmentInfo.timeline
});
}
this.loadSegment_(segmentInfo);
}
/**
* Determines if we should call endOfStream on the media source based
* on the state of the buffer or if appened segment was the final
* segment in the playlist.
*
* @param {number} [mediaIndex] the media index of segment we last appended
* @param {Object} [playlist] a media playlist object
* @return {boolean} do we need to call endOfStream on the MediaSource
*/
isEndOfStream_(mediaIndex = this.mediaIndex, playlist = this.playlist_, partIndex = this.partIndex) {
if (!playlist || !this.mediaSource_) {
return false;
}
const segment = typeof mediaIndex === 'number' && playlist.segments[mediaIndex]; // mediaIndex is zero based but length is 1 based
const appendedLastSegment = mediaIndex + 1 === playlist.segments.length; // true if there are no parts, or this is the last part.
const appendedLastPart = !segment || !segment.parts || partIndex + 1 === segment.parts.length; // if we've buffered to the end of the video, we need to call endOfStream
// so that MediaSources can trigger the `ended` event when it runs out of
// buffered data instead of waiting for me
return playlist.endList && this.mediaSource_.readyState === 'open' && appendedLastSegment && appendedLastPart;
}
/**
* Determines what request should be made given current segment loader state.
*
* @return {Object} a request object that describes the segment/part to load
*/
chooseNextRequest_() {
const buffered = this.buffered_();
const bufferedEnd = lastBufferedEnd(buffered) || 0;
const bufferedTime = timeAheadOf(buffered, this.currentTime_());
const preloaded = !this.hasPlayed_() && bufferedTime >= 1;
const haveEnoughBuffer = bufferedTime >= this.goalBufferLength_();
const segments = this.playlist_.segments; // return no segment if:
// 1. we don't have segments
// 2. The video has not yet played and we already downloaded a segment
// 3. we already have enough buffered time
if (!segments.length || preloaded || haveEnoughBuffer) {
return null;
}
this.syncPoint_ = this.syncPoint_ || this.syncController_.getSyncPoint(this.playlist_, this.duration_(), this.currentTimeline_, this.currentTime_(), this.loaderType_);
const next = {
partIndex: null,
mediaIndex: null,
startOfSegment: null,
playlist: this.playlist_,
isSyncRequest: Boolean(!this.syncPoint_)
};
if (next.isSyncRequest) {
next.mediaIndex = getSyncSegmentCandidate(this.currentTimeline_, segments, bufferedEnd);
this.logger_(`choose next request. Can not find sync point. Fallback to media Index: ${next.mediaIndex}`);
} else if (this.mediaIndex !== null) {
const segment = segments[this.mediaIndex];
const partIndex = typeof this.partIndex === 'number' ? this.partIndex : -1;
next.startOfSegment = segment.end ? segment.end : bufferedEnd;
if (segment.parts && segment.parts[partIndex + 1]) {
next.mediaIndex = this.mediaIndex;
next.partIndex = partIndex + 1;
} else {
next.mediaIndex = this.mediaIndex + 1;
}
} else {
let segmentIndex;
let partIndex;
let startTime;
const targetTime = this.fetchAtBuffer_ ? bufferedEnd : this.currentTime_();
if (this.mediaSequenceSync_) {
this.logger_(`chooseNextRequest_ request after Quality Switch:
For TargetTime: ${targetTime}.
CurrentTime: ${this.currentTime_()}
BufferedEnd: ${bufferedEnd}
Fetch At Buffer: ${this.fetchAtBuffer_}
`, this.mediaSequenceSync_.diagnostics);
}
if (this.mediaSequenceSync_ && this.mediaSequenceSync_.isReliable) {
const syncInfo = this.getSyncInfoFromMediaSequenceSync_(targetTime);
if (!syncInfo) {
const message = 'No sync info found while using media sequence sync';
this.error({
message,
metadata: {
errorType: videojs.Error.StreamingFailedToSelectNextSegment,
error: new Error(message)
}
});
this.logger_('chooseNextRequest_ - no sync info found using media sequence sync'); // no match
return null;
}
this.logger_(`chooseNextRequest_ mediaSequence syncInfo (${syncInfo.start} --> ${syncInfo.end})`);
segmentIndex = syncInfo.segmentIndex;
partIndex = syncInfo.partIndex;
startTime = syncInfo.start;
} else {
this.logger_('chooseNextRequest_ - fallback to a regular segment selection algorithm, based on a syncPoint.'); // fallback
const mediaInfoForTime = Playlist.getMediaInfoForTime({
exactManifestTimings: this.exactManifestTimings,
playlist: this.playlist_,
currentTime: targetTime,
startingPartIndex: this.syncPoint_.partIndex,
startingSegmentIndex: this.syncPoint_.segmentIndex,
startTime: this.syncPoint_.time
});
segmentIndex = mediaInfoForTime.segmentIndex;
partIndex = mediaInfoForTime.partIndex;
startTime = mediaInfoForTime.startTime;
}
next.getMediaInfoForTime = this.fetchAtBuffer_ ? `bufferedEnd ${targetTime}` : `currentTime ${targetTime}`;
next.mediaIndex = segmentIndex;
next.startOfSegment = startTime;
next.partIndex = partIndex;
this.logger_(`choose next request. Playlist switched and we have a sync point. Media Index: ${next.mediaIndex} `);
}
const nextSegment = segments[next.mediaIndex];
let nextPart = nextSegment && typeof next.partIndex === 'number' && nextSegment.parts && nextSegment.parts[next.partIndex]; // if the next segment index is invalid or
// the next partIndex is invalid do not choose a next segment.
if (!nextSegment || typeof next.partIndex === 'number' && !nextPart) {
return null;
} // if the next segment has parts, and we don't have a partIndex.
// Set partIndex to 0
if (typeof next.partIndex !== 'number' && nextSegment.parts) {
next.partIndex = 0;
nextPart = nextSegment.parts[0];
} // independentSegments applies to every segment in a playlist. If independentSegments appears in a main playlist,
// it applies to each segment in each media playlist.
// https://datatracker.ietf.org/doc/html/draft-pantos-http-live-streaming-23#section-4.3.5.1
const hasIndependentSegments = this.vhs_.playlists && this.vhs_.playlists.main && this.vhs_.playlists.main.independentSegments || this.playlist_.independentSegments; // if we have no buffered data then we need to make sure
// that the next part we append is "independent" if possible.
// So we check if the previous part is independent, and request
// it if it is.
if (!bufferedTime && nextPart && !hasIndependentSegments && !nextPart.independent) {
if (next.partIndex === 0) {
const lastSegment = segments[next.mediaIndex - 1];
const lastSegmentLastPart = lastSegment.parts && lastSegment.parts.length && lastSegment.parts[lastSegment.parts.length - 1];
if (lastSegmentLastPart && lastSegmentLastPart.independent) {
next.mediaIndex -= 1;
next.partIndex = lastSegment.parts.length - 1;
next.independent = 'previous segment';
}
} else if (nextSegment.parts[next.partIndex - 1].independent) {
next.partIndex -= 1;
next.independent = 'previous part';
}
}
const ended = this.mediaSource_ && this.mediaSource_.readyState === 'ended'; // do not choose a next segment if all of the following:
// 1. this is the last segment in the playlist
// 2. end of stream has been called on the media source already
// 3. the player is not seeking
if (next.mediaIndex >= segments.length - 1 && ended && !this.seeking_()) {
return null;
}
if (this.shouldForceTimestampOffsetAfterResync_) {
this.shouldForceTimestampOffsetAfterResync_ = false;
next.forceTimestampOffset = true;
this.logger_('choose next request. Force timestamp offset after loader resync');
}
return this.generateSegmentInfo_(next);
}
getSyncInfoFromMediaSequenceSync_(targetTime) {
if (!this.mediaSequenceSync_) {
return null;
} // we should pull the target time to the least available time if we drop out of sync for any reason
const finalTargetTime = Math.max(targetTime, this.mediaSequenceSync_.start);
if (targetTime !== finalTargetTime) {
this.logger_(`getSyncInfoFromMediaSequenceSync_. Pulled target time from ${targetTime} to ${finalTargetTime}`);
}
const mediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(finalTargetTime);
if (!mediaSequenceSyncInfo) {
// no match at all
return null;
}
if (!mediaSequenceSyncInfo.isAppended) {
// has a perfect match
return mediaSequenceSyncInfo;
} // has match, but segment was already appended.
// attempt to auto-advance to the nearest next segment:
const nextMediaSequenceSyncInfo = this.mediaSequenceSync_.getSyncInfoForTime(mediaSequenceSyncInfo.end);
if (!nextMediaSequenceSyncInfo) {
// no match at all
return null;
}
if (nextMediaSequenceSyncInfo.isAppended) {
this.logger_('getSyncInfoFromMediaSequenceSync_: We encounter unexpected scenario where next media sequence sync info is also appended!');
} // got match with the nearest next segment
return nextMediaSequenceSyncInfo;
}
generateSegmentInfo_(options) {
const {
independent,
playlist,
mediaIndex,
startOfSegment,
isSyncRequest,
partIndex,
forceTimestampOffset,
getMediaInfoForTime
} = options;
const segment = playlist.segments[mediaIndex];
const part = typeof partIndex === 'number' && segment.parts[partIndex];
const segmentInfo = {
requestId: 'segment-loader-' + Math.random(),
// resolve the segment URL relative to the playlist
uri: part && part.resolvedUri || segment.resolvedUri,
// the segment's mediaIndex at the time it was requested
mediaIndex,
partIndex: part ? partIndex : null,
// whether or not to update the SegmentLoader's state with this
// segment's mediaIndex
isSyncRequest,
startOfSegment,
// the segment's playlist
playlist,
// unencrypted bytes of the segment
bytes: null,
// when a key is defined for this segment, the encrypted bytes
encryptedBytes: null,
// The target timestampOffset for this segment when we append it
// to the source buffer
timestampOffset: null,
// The timeline that the segment is in
timeline: segment.timeline,
// The expected duration of the segment in seconds
duration: part && part.duration || segment.duration,
// retain the segment in case the playlist updates while doing an async process
segment,
part,
byteLength: 0,
transmuxer: this.transmuxer_,
// type of getMediaInfoForTime that was used to get this segment
getMediaInfoForTime,
independent
};
const overrideCheck = typeof forceTimestampOffset !== 'undefined' ? forceTimestampOffset : this.isPendingTimestampOffset_;
segmentInfo.timestampOffset = this.timestampOffsetForSegment_({
segmentTimeline: segment.timeline,
currentTimeline: this.currentTimeline_,
startOfSegment,
buffered: this.buffered_(),
overrideCheck
});
const audioBufferedEnd = lastBufferedEnd(this.sourceUpdater_.audioBuffered());
if (typeof audioBufferedEnd === 'number') {
// since the transmuxer is using the actual timing values, but the buffer is
// adjusted by the timestamp offset, we must adjust the value here
segmentInfo.audioAppendStart = audioBufferedEnd - this.sourceUpdater_.audioTimestampOffset();
}
if (this.sourceUpdater_.videoBuffered().length) {
segmentInfo.gopsToAlignWith = gopsSafeToAlignWith(this.gopBuffer_,
// since the transmuxer is using the actual timing values, but the time is
// adjusted by the timestmap offset, we must adjust the value here
this.currentTime_() - this.sourceUpdater_.videoTimestampOffset(), this.timeMapping_);
}
return segmentInfo;
} // get the timestampoffset for a segment,
// added so that vtt segment loader can override and prevent
// adding timestamp offsets.
timestampOffsetForSegment_(options) {
return timestampOffsetForSegment(options);
}
/**
* Determines if the network has enough bandwidth to complete the current segment
* request in a timely manner. If not, the request will be aborted early and bandwidth
* updated to trigger a playlist switch.
*
* @param {Object} stats
* Object containing stats about the request timing and size
* @private
*/
earlyAbortWhenNeeded_(stats) {
if (this.vhs_.tech_.paused() ||
// Don't abort if the current playlist is on the lowestEnabledRendition
// TODO: Replace using timeout with a boolean indicating whether this playlist is
// the lowestEnabledRendition.
!this.xhrOptions_.timeout ||
// Don't abort if we have no bandwidth information to estimate segment sizes
!this.playlist_.attributes.BANDWIDTH) {
return;
} // Wait at least 1 second since the first byte of data has been received before
// using the calculated bandwidth from the progress event to allow the bitrate
// to stabilize
if (Date.now() - (stats.firstBytesReceivedAt || Date.now()) < 1000) {
return;
}
const currentTime = this.currentTime_();
const measuredBandwidth = stats.bandwidth;
const segmentDuration = this.pendingSegment_.duration;
const requestTimeRemaining = Playlist.estimateSegmentRequestTime(segmentDuration, measuredBandwidth, this.playlist_, stats.bytesReceived); // Subtract 1 from the timeUntilRebuffer so we still consider an early abort
// if we are only left with less than 1 second when the request completes.
// A negative timeUntilRebuffering indicates we are already rebuffering
const timeUntilRebuffer$1 = timeUntilRebuffer(this.buffered_(), currentTime, this.vhs_.tech_.playbackRate()) - 1; // Only consider aborting early if the estimated time to finish the download
// is larger than the estimated time until the player runs out of forward buffer
if (requestTimeRemaining <= timeUntilRebuffer$1) {
return;
}
const switchCandidate = minRebufferMaxBandwidthSelector({
main: this.vhs_.playlists.main,
currentTime,
bandwidth: measuredBandwidth,
duration: this.duration_(),
segmentDuration,
timeUntilRebuffer: timeUntilRebuffer$1,
currentTimeline: this.currentTimeline_,
syncController: this.syncController_
});
if (!switchCandidate) {
return;
}
const rebufferingImpact = requestTimeRemaining - timeUntilRebuffer$1;
const timeSavedBySwitching = rebufferingImpact - switchCandidate.rebufferingImpact;
let minimumTimeSaving = 0.5; // If we are already rebuffering, increase the amount of variance we add to the
// potential round trip time of the new request so that we are not too aggressive
// with switching to a playlist that might save us a fraction of a second.
if (timeUntilRebuffer$1 <= TIME_FUDGE_FACTOR) {
minimumTimeSaving = 1;
}
if (!switchCandidate.playlist || switchCandidate.playlist.uri === this.playlist_.uri || timeSavedBySwitching < minimumTimeSaving) {
return;
} // set the bandwidth to that of the desired playlist being sure to scale by
// BANDWIDTH_VARIANCE and add one so the playlist selector does not exclude it
// don't trigger a bandwidthupdate as the bandwidth is artifial
this.bandwidth = switchCandidate.playlist.attributes.BANDWIDTH * Config.BANDWIDTH_VARIANCE + 1;
this.trigger('earlyabort');
}
handleAbort_(segmentInfo) {
this.logger_(`Aborting ${segmentInfoString(segmentInfo)}`);
this.mediaRequestsAborted += 1;
}
/**
* XHR `progress` event handler
*
* @param {Event}
* The XHR `progress` event
* @param {Object} simpleSegment
* A simplified segment object copy
* @private
*/
handleProgress_(event, simpleSegment) {
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
}
this.trigger('progress');
}
handleTrackInfo_(simpleSegment, trackInfo) {
const {
hasAudio,
hasVideo
} = trackInfo;
const metadata = {
segmentInfo: segmentInfoPayload({
type: this.loaderType_,
segment: simpleSegment
}),
trackInfo: {
hasAudio,
hasVideo
}
};
this.trigger({
type: 'segmenttransmuxingtrackinfoavailable',
metadata
});
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
}
if (this.checkForIllegalMediaSwitch(trackInfo)) {
return;
}
trackInfo = trackInfo || {}; // When we have track info, determine what media types this loader is dealing with.
// Guard against cases where we're not getting track info at all until we are
// certain that all streams will provide it.
if (!shallowEqual(this.currentMediaInfo_, trackInfo)) {
this.appendInitSegment_ = {
audio: true,
video: true
};
this.startingMediaInfo_ = trackInfo;
this.currentMediaInfo_ = trackInfo;
this.logger_('trackinfo update', trackInfo);
this.trigger('trackinfo');
} // trackinfo may cause an abort if the trackinfo
// causes a codec change to an unsupported codec.
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
} // set trackinfo on the pending segment so that
// it can append.
this.pendingSegment_.trackInfo = trackInfo; // check if any calls were waiting on the track info
if (this.hasEnoughInfoToAppend_()) {
this.processCallQueue_();
} else {
checkAndFixTimelines(this);
}
}
handleTimingInfo_(simpleSegment, mediaType, timeType, time) {
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
}
const segmentInfo = this.pendingSegment_;
const timingInfoProperty = timingInfoPropertyForMedia(mediaType);
segmentInfo[timingInfoProperty] = segmentInfo[timingInfoProperty] || {};
segmentInfo[timingInfoProperty][timeType] = time;
this.logger_(`timinginfo: ${mediaType} - ${timeType} - ${time}`); // check if any calls were waiting on the timing info
if (this.hasEnoughInfoToAppend_()) {
this.processCallQueue_();
} else {
checkAndFixTimelines(this);
}
}
handleCaptions_(simpleSegment, captionData) {
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
} // This could only happen with fmp4 segments, but
// should still not happen in general
if (captionData.length === 0) {
this.logger_('SegmentLoader received no captions from a caption event');
return;
}
const segmentInfo = this.pendingSegment_; // Wait until we have some video data so that caption timing
// can be adjusted by the timestamp offset
if (!segmentInfo.hasAppendedData_) {
this.metadataQueue_.caption.push(this.handleCaptions_.bind(this, simpleSegment, captionData));
return;
}
const timestampOffset = this.sourceUpdater_.videoTimestampOffset() === null ? this.sourceUpdater_.audioTimestampOffset() : this.sourceUpdater_.videoTimestampOffset();
const captionTracks = {}; // get total start/end and captions for each track/stream
captionData.forEach(caption => {
// caption.stream is actually a track name...
// set to the existing values in tracks or default values
captionTracks[caption.stream] = captionTracks[caption.stream] || {
// Infinity, as any other value will be less than this
startTime: Infinity,
captions: [],
// 0 as an other value will be more than this
endTime: 0
};
const captionTrack = captionTracks[caption.stream];
captionTrack.startTime = Math.min(captionTrack.startTime, caption.startTime + timestampOffset);
captionTrack.endTime = Math.max(captionTrack.endTime, caption.endTime + timestampOffset);
captionTrack.captions.push(caption);
});
Object.keys(captionTracks).forEach(trackName => {
const {
startTime,
endTime,
captions
} = captionTracks[trackName];
const inbandTextTracks = this.inbandTextTracks_;
this.logger_(`adding cues from ${startTime} -> ${endTime} for ${trackName}`);
createCaptionsTrackIfNotExists(inbandTextTracks, this.vhs_.tech_, trackName); // clear out any cues that start and end at the same time period for the same track.
// We do this because a rendition change that also changes the timescale for captions
// will result in captions being re-parsed for certain segments. If we add them again
// without clearing we will have two of the same captions visible.
removeCuesFromTrack(startTime, endTime, inbandTextTracks[trackName]);
addCaptionData({
captionArray: captions,
inbandTextTracks,
timestampOffset
});
}); // Reset stored captions since we added parsed
// captions to a text track at this point
if (this.transmuxer_) {
this.transmuxer_.postMessage({
action: 'clearParsedMp4Captions'
});
}
}
handleId3_(simpleSegment, id3Frames, dispatchType) {
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
}
const segmentInfo = this.pendingSegment_; // we need to have appended data in order for the timestamp offset to be set
if (!segmentInfo.hasAppendedData_) {
this.metadataQueue_.id3.push(this.handleId3_.bind(this, simpleSegment, id3Frames, dispatchType));
return;
}
this.addMetadataToTextTrack(dispatchType, id3Frames, this.duration_());
}
processMetadataQueue_() {
this.metadataQueue_.id3.forEach(fn => fn());
this.metadataQueue_.caption.forEach(fn => fn());
this.metadataQueue_.id3 = [];
this.metadataQueue_.caption = [];
}
processCallQueue_() {
const callQueue = this.callQueue_; // Clear out the queue before the queued functions are run, since some of the
// functions may check the length of the load queue and default to pushing themselves
// back onto the queue.
this.callQueue_ = [];
callQueue.forEach(fun => fun());
}
processLoadQueue_() {
const loadQueue = this.loadQueue_; // Clear out the queue before the queued functions are run, since some of the
// functions may check the length of the load queue and default to pushing themselves
// back onto the queue.
this.loadQueue_ = [];
loadQueue.forEach(fun => fun());
}
/**
* Determines whether the loader has enough info to load the next segment.
*
* @return {boolean}
* Whether or not the loader has enough info to load the next segment
*/
hasEnoughInfoToLoad_() {
// Since primary timing goes by video, only the audio loader potentially needs to wait
// to load.
if (this.loaderType_ !== 'audio') {
return true;
}
const segmentInfo = this.pendingSegment_; // A fill buffer must have already run to establish a pending segment before there's
// enough info to load.
if (!segmentInfo) {
return false;
} // The first segment can and should be loaded immediately so that source buffers are
// created together (before appending). Source buffer creation uses the presence of
// audio and video data to determine whether to create audio/video source buffers, and
// uses processed (transmuxed or parsed) media to determine the types required.
if (!this.getCurrentMediaInfo_()) {
return true;
}
if (
// Technically, instead of waiting to load a segment on timeline changes, a segment
// can be requested and downloaded and only wait before it is transmuxed or parsed.
// But in practice, there are a few reasons why it is better to wait until a loader
// is ready to append that segment before requesting and downloading:
//
// 1. Because audio and main loaders cross discontinuities together, if this loader
// is waiting for the other to catch up, then instead of requesting another
// segment and using up more bandwidth, by not yet loading, more bandwidth is
// allotted to the loader currently behind.
// 2. media-segment-request doesn't have to have logic to consider whether a segment
// is ready to be processed or not, isolating the queueing behavior to the loader.
// 3. The audio loader bases some of its segment properties on timing information
// provided by the main loader, meaning that, if the logic for waiting on
// processing was in media-segment-request, then it would also need to know how
// to re-generate the segment information after the main loader caught up.
shouldWaitForTimelineChange({
timelineChangeController: this.timelineChangeController_,
currentTimeline: this.currentTimeline_,
segmentTimeline: segmentInfo.timeline,
loaderType: this.loaderType_,
audioDisabled: this.audioDisabled_
})) {
return false;
}
return true;
}
getCurrentMediaInfo_(segmentInfo = this.pendingSegment_) {
return segmentInfo && segmentInfo.trackInfo || this.currentMediaInfo_;
}
getMediaInfo_(segmentInfo = this.pendingSegment_) {
return this.getCurrentMediaInfo_(segmentInfo) || this.startingMediaInfo_;
}
getPendingSegmentPlaylist() {
return this.pendingSegment_ ? this.pendingSegment_.playlist : null;
}
hasEnoughInfoToAppend_() {
if (!this.sourceUpdater_.ready()) {
return false;
} // If content needs to be removed or the loader is waiting on an append reattempt,
// then no additional content should be appended until the prior append is resolved.
if (this.waitingOnRemove_ || this.quotaExceededErrorRetryTimeout_) {
return false;
}
const segmentInfo = this.pendingSegment_;
const trackInfo = this.getCurrentMediaInfo_(); // no segment to append any data for or
// we do not have information on this specific
// segment yet
if (!segmentInfo || !trackInfo) {
return false;
}
const {
hasAudio,
hasVideo,
isMuxed
} = trackInfo;
if (hasVideo && !segmentInfo.videoTimingInfo) {
return false;
} // muxed content only relies on video timing information for now.
if (hasAudio && !this.audioDisabled_ && !isMuxed && !segmentInfo.audioTimingInfo) {
return false;
} // we need to allow an append here even if we're moving to different timelines.
if (shouldWaitForTimelineChange({
timelineChangeController: this.timelineChangeController_,
currentTimeline: this.currentTimeline_,
segmentTimeline: segmentInfo.timeline,
loaderType: this.loaderType_,
audioDisabled: this.audioDisabled_
})) {
return false;
}
return true;
}
handleData_(simpleSegment, result) {
this.earlyAbortWhenNeeded_(simpleSegment.stats);
if (this.checkForAbort_(simpleSegment.requestId)) {
return;
} // If there's anything in the call queue, then this data came later and should be
// executed after the calls currently queued.
if (this.callQueue_.length || !this.hasEnoughInfoToAppend_()) {
checkAndFixTimelines(this);
this.callQueue_.push(this.handleData_.bind(this, simpleSegment, result));
return;
}
const segmentInfo = this.pendingSegment_; // update the time mapping so we can translate from display time to media time
this.setTimeMapping_(segmentInfo.timeline); // for tracking overall stats
this.updateMediaSecondsLoaded_(segmentInfo.part || segmentInfo.segment); // Note that the state isn't changed from loading to appending. This is because abort
// logic may change behavior depending on the state, and changing state too early may
// inflate our estimates of bandwidth. In the future this should be re-examined to
// note more granular states.
// don't process and append data if the mediaSource is closed
if (this.mediaSource_.readyState === 'closed') {
return;
} // if this request included an initialization segment, save that data
// to the initSegment cache
if (simpleSegment.map) {
simpleSegment.map = this.initSegmentForMap(simpleSegment.map, true); // move over init segment properties to media request
segmentInfo.segment.map = simpleSegment.map;
} // if this request included a segment key, save that data in the cache
if (simpleSegment.key) {
this.segmentKey(simpleSegment.key, true);
}
segmentInfo.isFmp4 = simpleSegment.isFmp4;
segmentInfo.timingInfo = segmentInfo.timingInfo || {};
if (segmentInfo.isFmp4) {
this.trigger('fmp4');
segmentInfo.timingInfo.start = segmentInfo[timingInfoPropertyForMedia(result.type)].start;
} else {
const trackInfo = this.getCurrentMediaInfo_();
const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
let firstVideoFrameTimeForData;
if (useVideoTimingInfo) {
firstVideoFrameTimeForData = segmentInfo.videoTimingInfo.start;
} // Segment loader knows more about segment timing than the transmuxer (in certain
// aspects), so make any changes required for a more accurate start time.
// Don't set the end time yet, as the segment may not be finished processing.
segmentInfo.timingInfo.start = this.trueSegmentStart_({
currentStart: segmentInfo.timingInfo.start,
playlist: segmentInfo.playlist,
mediaIndex: segmentInfo.mediaIndex,
currentVideoTimestampOffset: this.sourceUpdater_.videoTimestampOffset(),
useVideoTimingInfo,
firstVideoFrameTimeForData,
videoTimingInfo: segmentInfo.videoTimingInfo,
audioTimingInfo: segmentInfo.audioTimingInfo
});
} // Init segments for audio and video only need to be appended in certain cases. Now
// that data is about to be appended, we can check the final cases to determine
// whether we should append an init segment.
this.updateAppendInitSegmentStatus(segmentInfo, result.type); // Timestamp offset should be updated once we get new data and have its timing info,
// as we use the start of the segment to offset the best guess (playlist provided)
// timestamp offset.
this.updateSourceBufferTimestampOffset_(segmentInfo); // if this is a sync request we need to determine whether it should
// be appended or not.
if (segmentInfo.isSyncRequest) {
// first save/update our timing info for this segment.
// this is what allows us to choose an accurate segment
// and the main reason we make a sync request.
this.updateTimingInfoEnd_(segmentInfo);
this.syncController_.saveSegmentTimingInfo({
segmentInfo,
shouldSaveTimelineMapping: this.loaderType_ === 'main'
});
const next = this.chooseNextRequest_(); // If the sync request isn't the segment that would be requested next
// after taking into account its timing info, do not append it.
if (next.mediaIndex !== segmentInfo.mediaIndex || next.partIndex !== segmentInfo.partIndex) {
this.logger_('sync segment was incorrect, not appending');
return;
} // otherwise append it like any other segment as our guess was correct.
this.logger_('sync segment was correct, appending');
} // Save some state so that in the future anything waiting on first append (and/or
// timestamp offset(s)) can process immediately. While the extra state isn't optimal,
// we need some notion of whether the timestamp offset or other relevant information
// has had a chance to be set.
segmentInfo.hasAppendedData_ = true; // Now that the timestamp offset should be set, we can append any waiting ID3 tags.
this.processMetadataQueue_();
this.appendData_(segmentInfo, result);
}
updateAppendInitSegmentStatus(segmentInfo, type) {
// alt audio doesn't manage timestamp offset
if (this.loaderType_ === 'main' && typeof segmentInfo.timestampOffset === 'number' &&
// in the case that we're handling partial data, we don't want to append an init
// segment for each chunk
!segmentInfo.changedTimestampOffset) {
// if the timestamp offset changed, the timeline may have changed, so we have to re-
// append init segments
this.appendInitSegment_ = {
audio: true,
video: true
};
}
if (this.playlistOfLastInitSegment_[type] !== segmentInfo.playlist) {
// make sure we append init segment on playlist changes, in case the media config
// changed
this.appendInitSegment_[type] = true;
}
}
getInitSegmentAndUpdateState_({
type,
initSegment,
map,
playlist
}) {
// "The EXT-X-MAP tag specifies how to obtain the Media Initialization Section
// (Section 3) required to parse the applicable Media Segments. It applies to every
// Media Segment that appears after it in the Playlist until the next EXT-X-MAP tag
// or until the end of the playlist."
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-23#section-4.3.2.5
if (map) {
const id = initSegmentId(map);
if (this.activeInitSegmentId_ === id) {
// don't need to re-append the init segment if the ID matches
return null;
} // a map-specified init segment takes priority over any transmuxed (or otherwise
// obtained) init segment
//
// this also caches the init segment for later use
initSegment = this.initSegmentForMap(map, true).bytes;
this.activeInitSegmentId_ = id;
} // We used to always prepend init segments for video, however, that shouldn't be
// necessary. Instead, we should only append on changes, similar to what we've always
// done for audio. This is more important (though may not be that important) for
// frame-by-frame appending for LHLS, simply because of the increased quantity of
// appends.
if (initSegment && this.appendInitSegment_[type]) {
// Make sure we track the playlist that we last used for the init segment, so that
// we can re-append the init segment in the event that we get data from a new
// playlist. Discontinuities and track changes are handled in other sections.
this.playlistOfLastInitSegment_[type] = playlist; // Disable future init segment appends for this type. Until a change is necessary.
this.appendInitSegment_[type] = false; // we need to clear out the fmp4 active init segment id, since
// we are appending the muxer init segment
this.activeInitSegmentId_ = null;
return initSegment;
}
return null;
}
handleQuotaExceededError_({
segmentInfo,
type,
bytes
}, error) {
const audioBuffered = this.sourceUpdater_.audioBuffered();
const videoBuffered = this.sourceUpdater_.videoBuffered(); // For now we're ignoring any notion of gaps in the buffer, but they, in theory,
// should be cleared out during the buffer removals. However, log in case it helps
// debug.
if (audioBuffered.length > 1) {
this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the audio buffer: ' + timeRangesToArray(audioBuffered).join(', '));
}
if (videoBuffered.length > 1) {
this.logger_('On QUOTA_EXCEEDED_ERR, found gaps in the video buffer: ' + timeRangesToArray(videoBuffered).join(', '));
}
const audioBufferStart = audioBuffered.length ? audioBuffered.start(0) : 0;
const audioBufferEnd = audioBuffered.length ? audioBuffered.end(audioBuffered.length - 1) : 0;
const videoBufferStart = videoBuffered.length ? videoBuffered.start(0) : 0;
const videoBufferEnd = videoBuffered.length ? videoBuffered.end(videoBuffered.length - 1) : 0;
if (audioBufferEnd - audioBufferStart <= MIN_BACK_BUFFER && videoBufferEnd - videoBufferStart <= MIN_BACK_BUFFER) {
// Can't remove enough buffer to make room for new segment (or the browser doesn't
// allow for appends of segments this size). In the future, it may be possible to
// split up the segment and append in pieces, but for now, error out this playlist
// in an attempt to switch to a more manageable rendition.
this.logger_('On QUOTA_EXCEEDED_ERR, single segment too large to append to ' + 'buffer, triggering an error. ' + `Appended byte length: ${bytes.byteLength}, ` + `audio buffer: ${timeRangesToArray(audioBuffered).join(', ')}, ` + `video buffer: ${timeRangesToArray(videoBuffered).join(', ')}, `);
this.error({
message: 'Quota exceeded error with append of a single segment of content',
excludeUntil: Infinity
});
this.trigger('error');
return;
} // To try to resolve the quota exceeded error, clear back buffer and retry. This means
// that the segment-loader should block on future events until this one is handled, so
// that it doesn't keep moving onto further segments. Adding the call to the call
// queue will prevent further appends until waitingOnRemove_ and
// quotaExceededErrorRetryTimeout_ are cleared.
//
// Note that this will only block the current loader. In the case of demuxed content,
// the other load may keep filling as fast as possible. In practice, this should be
// OK, as it is a rare case when either audio has a high enough bitrate to fill up a
// source buffer, or video fills without enough room for audio to append (and without
// the availability of clearing out seconds of back buffer to make room for audio).
// But it might still be good to handle this case in the future as a TODO.
this.waitingOnRemove_ = true;
this.callQueue_.push(this.appendToSourceBuffer_.bind(this, {
segmentInfo,
type,
bytes
}));
const currentTime = this.currentTime_(); // Try to remove as much audio and video as possible to make room for new content
// before retrying.
const timeToRemoveUntil = currentTime - MIN_BACK_BUFFER;
this.logger_(`On QUOTA_EXCEEDED_ERR, removing audio/video from 0 to ${timeToRemoveUntil}`);
this.remove(0, timeToRemoveUntil, () => {
this.logger_(`On QUOTA_EXCEEDED_ERR, retrying append in ${MIN_BACK_BUFFER}s`);
this.waitingOnRemove_ = false; // wait the length of time alotted in the back buffer to prevent wasted
// attempts (since we can't clear less than the minimum)
this.quotaExceededErrorRetryTimeout_ = window.setTimeout(() => {
this.logger_('On QUOTA_EXCEEDED_ERR, re-processing call queue');
this.quotaExceededErrorRetryTimeout_ = null;
this.processCallQueue_();
}, MIN_BACK_BUFFER * 1000);
}, true);
}
handleAppendError_({
segmentInfo,
type,
bytes
}, error) {
// if there's no error, nothing to do
if (!error) {
return;
}
if (error.code === QUOTA_EXCEEDED_ERR) {
this.handleQuotaExceededError_({
segmentInfo,
type,
bytes
}); // A quota exceeded error should be recoverable with a future re-append, so no need
// to trigger an append error.
return;
}
this.logger_('Received non QUOTA_EXCEEDED_ERR on append', error); // If an append errors, we often can't recover.
// (see https://w3c.github.io/media-source/#sourcebuffer-append-error).
//
// Trigger a special error so that it can be handled separately from normal,
// recoverable errors.
this.error({
message: `${type} append of ${bytes.length}b failed for segment ` + `#${segmentInfo.mediaIndex} in playlist ${segmentInfo.playlist.id}`,
metadata: {
errorType: videojs.Error.StreamingFailedToAppendSegment
}
});
this.trigger('appenderror');
}
appendToSourceBuffer_({
segmentInfo,
type,
initSegment,
data,
bytes
}) {
// If this is a re-append, bytes were already created and don't need to be recreated
if (!bytes) {
const segments = [data];
let byteLength = data.byteLength;
if (initSegment) {
// if the media initialization segment is changing, append it before the content
// segment
segments.unshift(initSegment);
byteLength += initSegment.byteLength;
} // Technically we should be OK appending the init segment separately, however, we
// haven't yet tested that, and prepending is how we have always done things.
bytes = concatSegments({
bytes: byteLength,
segments
});
}
const metadata = {
segmentInfo: segmentInfoPayload({
type: this.loaderType_,
segment: segmentInfo
})
};
this.trigger({
type: 'segmentappendstart',
metadata
});
this.sourceUpdater_.appendBuffer({
segmentInfo,
type,
bytes
}, this.handleAppendError_.bind(this, {
segmentInfo,
type,
bytes
}));
}
handleSegmentTimingInfo_(type, requestId, segmentTimingInfo) {
if (!this.pendingSegment_ || requestId !== this.pendingSegment_.requestId) {
return;
}
const segment = this.pendingSegment_.segment;
const timingInfoProperty = `${type}TimingInfo`;
if (!segment[timingInfoProperty]) {
segment[timingInfoProperty] = {};
}
segment[timingInfoProperty].transmuxerPrependedSeconds = segmentTimingInfo.prependedContentDuration || 0;
segment[timingInfoProperty].transmuxedPresentationStart = segmentTimingInfo.start.presentation;
segment[timingInfoProperty].transmuxedDecodeStart = segmentTimingInfo.start.decode;
segment[timingInfoProperty].transmuxedPresentationEnd = segmentTimingInfo.end.presentation;
segment[timingInfoProperty].transmuxedDecodeEnd = segmentTimingInfo.end.decode; // mainly used as a reference for debugging
segment[timingInfoProperty].baseMediaDecodeTime = segmentTimingInfo.baseMediaDecodeTime;
}
appendData_(segmentInfo, result) {
const {
type,
data
} = result;
if (!data || !data.byteLength) {
return;
}
if (type === 'audio' && this.audioDisabled_) {
return;
}
const initSegment = this.getInitSegmentAndUpdateState_({
type,
initSegment: result.initSegment,
playlist: segmentInfo.playlist,
map: segmentInfo.isFmp4 ? segmentInfo.segment.map : null
});
this.appendToSourceBuffer_({
segmentInfo,
type,
initSegment,
data
});
}
/**
* load a specific segment from a request into the buffer
*
* @private
*/
loadSegment_(segmentInfo) {
this.state = 'WAITING';
this.pendingSegment_ = segmentInfo;
this.trimBackBuffer_(segmentInfo);
if (typeof segmentInfo.timestampOffset === 'number') {
if (this.transmuxer_) {
this.transmuxer_.postMessage({
action: 'clearAllMp4Captions'
});
}
}
if (!this.hasEnoughInfoToLoad_()) {
checkAndFixTimelines(this);
this.loadQueue_.push(() => {
// regenerate the audioAppendStart, timestampOffset, etc as they
// may have changed since this function was added to the queue.
const options = _extends$1({}, segmentInfo, {
forceTimestampOffset: true
});
_extends$1(segmentInfo, this.generateSegmentInfo_(options));
this.isPendingTimestampOffset_ = false;
this.updateTransmuxerAndRequestSegment_(segmentInfo);
});
return;
}
this.updateTransmuxerAndRequestSegment_(segmentInfo);
}
updateTransmuxerAndRequestSegment_(segmentInfo) {
// We'll update the source buffer's timestamp offset once we have transmuxed data, but
// the transmuxer still needs to be updated before then.
//
// Even though keepOriginalTimestamps is set to true for the transmuxer, timestamp
// offset must be passed to the transmuxer for stream correcting adjustments.
if (this.shouldUpdateTransmuxerTimestampOffset_(segmentInfo.timestampOffset)) {
this.gopBuffer_.length = 0; // gopsToAlignWith was set before the GOP buffer was cleared
segmentInfo.gopsToAlignWith = [];
this.timeMapping_ = 0; // reset values in the transmuxer since a discontinuity should start fresh
this.transmuxer_.postMessage({
action: 'reset'
});
this.transmuxer_.postMessage({
action: 'setTimestampOffset',
timestampOffset: segmentInfo.timestampOffset
});
}
const simpleSegment = this.createSimplifiedSegmentObj_(segmentInfo);
const isEndOfStream = this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex);
const isWalkingForward = this.mediaIndex !== null;
const isDiscontinuity = segmentInfo.timeline !== this.currentTimeline_ &&
// currentTimeline starts at -1, so we shouldn't end the timeline switching to 0,
// the first timeline
segmentInfo.timeline > 0;
const isEndOfTimeline = isEndOfStream || isWalkingForward && isDiscontinuity;
this.logger_(`Requesting
${compactSegmentUrlDescription(segmentInfo.uri)}
${segmentInfoString(segmentInfo)}`); // If there's an init segment associated with this segment, but it is not cached (identified by a lack of bytes),
// then this init segment has never been seen before and should be appended.
//
// At this point the content type (audio/video or both) is not yet known, but it should be safe to set
// both to true and leave the decision of whether to append the init segment to append time.
if (simpleSegment.map && !simpleSegment.map.bytes) {
this.logger_('going to request init segment.');
this.appendInitSegment_ = {
video: true,
audio: true
};
}
segmentInfo.abortRequests = mediaSegmentRequest({
xhr: this.vhs_.xhr,
xhrOptions: this.xhrOptions_,
decryptionWorker: this.decrypter_,
segment: simpleSegment,
abortFn: this.handleAbort_.bind(this, segmentInfo),
progressFn: this.handleProgress_.bind(this),
trackInfoFn: this.handleTrackInfo_.bind(this),
timingInfoFn: this.handleTimingInfo_.bind(this),
videoSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'video', segmentInfo.requestId),
audioSegmentTimingInfoFn: this.handleSegmentTimingInfo_.bind(this, 'audio', segmentInfo.requestId),
captionsFn: this.handleCaptions_.bind(this),
isEndOfTimeline,
endedTimelineFn: () => {
this.logger_('received endedtimeline callback');
},
id3Fn: this.handleId3_.bind(this),
dataFn: this.handleData_.bind(this),
doneFn: this.segmentRequestFinished_.bind(this),
onTransmuxerLog: ({
message,
level,
stream
}) => {
this.logger_(`${segmentInfoString(segmentInfo)} logged from transmuxer stream ${stream} as a ${level}: ${message}`);
},
triggerSegmentEventFn: ({
type,
segment,
keyInfo,
trackInfo,
timingInfo
}) => {
const segInfo = segmentInfoPayload({
segment
});
const metadata = {
segmentInfo: segInfo
}; // add other properties if necessary.
if (keyInfo) {
metadata.keyInfo = keyInfo;
}
if (trackInfo) {
metadata.trackInfo = trackInfo;
}
if (timingInfo) {
metadata.timingInfo = timingInfo;
}
this.trigger({
type,
metadata
});
}
});
}
/**
* trim the back buffer so that we don't have too much data
* in the source buffer
*
* @private
*
* @param {Object} segmentInfo - the current segment
*/
trimBackBuffer_(segmentInfo) {
const removeToTime = safeBackBufferTrimTime(this.seekable_(), this.currentTime_(), this.playlist_.targetDuration || 10); // Chrome has a hard limit of 150MB of
// buffer and a very conservative "garbage collector"
// We manually clear out the old buffer to ensure
// we don't trigger the QuotaExceeded error
// on the source buffer during subsequent appends
if (removeToTime > 0) {
this.remove(0, removeToTime);
}
}
/**
* created a simplified copy of the segment object with just the
* information necessary to perform the XHR and decryption
*
* @private
*
* @param {Object} segmentInfo - the current segment
* @return {Object} a simplified segment object copy
*/
createSimplifiedSegmentObj_(segmentInfo) {
const segment = segmentInfo.segment;
const part = segmentInfo.part;
const isEncrypted = segmentInfo.segment.key || segmentInfo.segment.map && segmentInfo.segment.map.key;
const isMediaInitialization = segmentInfo.segment.map && !segmentInfo.segment.map.bytes;
const simpleSegment = {
resolvedUri: part ? part.resolvedUri : segment.resolvedUri,
byterange: part ? part.byterange : segment.byterange,
requestId: segmentInfo.requestId,
transmuxer: segmentInfo.transmuxer,
audioAppendStart: segmentInfo.audioAppendStart,
gopsToAlignWith: segmentInfo.gopsToAlignWith,
part: segmentInfo.part,
type: this.loaderType_,
start: segmentInfo.startOfSegment,
duration: segmentInfo.duration,
isEncrypted,
isMediaInitialization
};
const previousSegment = segmentInfo.playlist.segments[segmentInfo.mediaIndex - 1];
if (previousSegment && previousSegment.timeline === segment.timeline) {
// The baseStartTime of a segment is used to handle rollover when probing the TS
// segment to retrieve timing information. Since the probe only looks at the media's
// times (e.g., PTS and DTS values of the segment), and doesn't consider the
// player's time (e.g., player.currentTime()), baseStartTime should reflect the
// media time as well. transmuxedDecodeEnd represents the end time of a segment, in
// seconds of media time, so should be used here. The previous segment is used since
// the end of the previous segment should represent the beginning of the current
// segment, so long as they are on the same timeline.
if (previousSegment.videoTimingInfo) {
simpleSegment.baseStartTime = previousSegment.videoTimingInfo.transmuxedDecodeEnd;
} else if (previousSegment.audioTimingInfo) {
simpleSegment.baseStartTime = previousSegment.audioTimingInfo.transmuxedDecodeEnd;
}
}
if (segment.key) {
// if the media sequence is greater than 2^32, the IV will be incorrect
// assuming 10s segments, that would be about 1300 years
const iv = segment.key.iv || new Uint32Array([0, 0, 0, segmentInfo.mediaIndex + segmentInfo.playlist.mediaSequence]);
simpleSegment.key = this.segmentKey(segment.key);
simpleSegment.key.iv = iv;
}
if (segment.map) {
simpleSegment.map = this.initSegmentForMap(segment.map);
}
return simpleSegment;
}
saveTransferStats_(stats) {
// every request counts as a media request even if it has been aborted
// or canceled due to a timeout
this.mediaRequests += 1;
if (stats) {
this.mediaBytesTransferred += stats.bytesReceived;
this.mediaTransferDuration += stats.roundTripTime;
}
}
saveBandwidthRelatedStats_(duration, stats) {
// byteLength will be used for throughput, and should be based on bytes receieved,
// which we only know at the end of the request and should reflect total bytes
// downloaded rather than just bytes processed from components of the segment
this.pendingSegment_.byteLength = stats.bytesReceived;
if (duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
this.logger_(`Ignoring segment's bandwidth because its duration of ${duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
return;
}
const metadata = {
bandwidthInfo: {
from: this.bandwidth,
to: stats.bandwidth
}
}; // player event with payload
this.trigger({
type: 'bandwidthupdated',
metadata
});
this.bandwidth = stats.bandwidth;
this.roundTrip = stats.roundTripTime;
}
handleTimeout_() {
// although the VTT segment loader bandwidth isn't really used, it's good to
// maintain functinality between segment loaders
this.mediaRequestsTimedout += 1;
this.bandwidth = 1;
this.roundTrip = NaN;
this.trigger('bandwidthupdate');
this.trigger('timeout');
}
/**
* Handle the callback from the segmentRequest function and set the
* associated SegmentLoader state and errors if necessary
*
* @private
*/
segmentRequestFinished_(error, simpleSegment, result) {
// TODO handle special cases, e.g., muxed audio/video but only audio in the segment
// check the call queue directly since this function doesn't need to deal with any
// data, and can continue even if the source buffers are not set up and we didn't get
// any data from the segment
if (this.callQueue_.length) {
this.callQueue_.push(this.segmentRequestFinished_.bind(this, error, simpleSegment, result));
return;
}
this.saveTransferStats_(simpleSegment.stats); // The request was aborted and the SegmentLoader has already been reset
if (!this.pendingSegment_) {
return;
} // the request was aborted and the SegmentLoader has already started
// another request. this can happen when the timeout for an aborted
// request triggers due to a limitation in the XHR library
// do not count this as any sort of request or we risk double-counting
if (simpleSegment.requestId !== this.pendingSegment_.requestId) {
return;
} // an error occurred from the active pendingSegment_ so reset everything
if (error) {
this.pendingSegment_ = null;
this.state = 'READY'; // aborts are not a true error condition and nothing corrective needs to be done
if (error.code === REQUEST_ERRORS.ABORTED) {
return;
}
this.pause(); // the error is really just that at least one of the requests timed-out
// set the bandwidth to a very low value and trigger an ABR switch to
// take emergency action
if (error.code === REQUEST_ERRORS.TIMEOUT) {
this.handleTimeout_();
return;
} // if control-flow has arrived here, then the error is real
// emit an error event to exclude the current playlist
this.mediaRequestsErrored += 1;
this.error(error);
this.trigger('error');
return;
}
const segmentInfo = this.pendingSegment_; // the response was a success so set any bandwidth stats the request
// generated for ABR purposes
this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats);
segmentInfo.endOfAllRequests = simpleSegment.endOfAllRequests;
if (result.gopInfo) {
this.gopBuffer_ = updateGopBuffer(this.gopBuffer_, result.gopInfo, this.safeAppend_);
} // Although we may have already started appending on progress, we shouldn't switch the
// state away from loading until we are officially done loading the segment data.
this.state = 'APPENDING'; // used for testing
this.trigger('appending');
this.waitForAppendsToComplete_(segmentInfo);
}
setTimeMapping_(timeline) {
const timelineMapping = this.syncController_.mappingForTimeline(timeline);
if (timelineMapping !== null) {
this.timeMapping_ = timelineMapping;
}
}
updateMediaSecondsLoaded_(segment) {
if (typeof segment.start === 'number' && typeof segment.end === 'number') {
this.mediaSecondsLoaded += segment.end - segment.start;
} else {
this.mediaSecondsLoaded += segment.duration;
}
}
shouldUpdateTransmuxerTimestampOffset_(timestampOffset) {
if (timestampOffset === null) {
return false;
} // note that we're potentially using the same timestamp offset for both video and
// audio
if (this.loaderType_ === 'main' && timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
return true;
}
if (!this.audioDisabled_ && timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
return true;
}
return false;
}
trueSegmentStart_({
currentStart,
playlist,
mediaIndex,
firstVideoFrameTimeForData,
currentVideoTimestampOffset,
useVideoTimingInfo,
videoTimingInfo,
audioTimingInfo
}) {
if (typeof currentStart !== 'undefined') {
// if start was set once, keep using it
return currentStart;
}
if (!useVideoTimingInfo) {
return audioTimingInfo.start;
}
const previousSegment = playlist.segments[mediaIndex - 1]; // The start of a segment should be the start of the first full frame contained
// within that segment. Since the transmuxer maintains a cache of incomplete data
// from and/or the last frame seen, the start time may reflect a frame that starts
// in the previous segment. Check for that case and ensure the start time is
// accurate for the segment.
if (mediaIndex === 0 || !previousSegment || typeof previousSegment.start === 'undefined' || previousSegment.end !== firstVideoFrameTimeForData + currentVideoTimestampOffset) {
return firstVideoFrameTimeForData;
}
return videoTimingInfo.start;
}
waitForAppendsToComplete_(segmentInfo) {
const trackInfo = this.getCurrentMediaInfo_(segmentInfo);
if (!trackInfo) {
this.error({
message: 'No starting media returned, likely due to an unsupported media format.',
playlistExclusionDuration: Infinity
});
this.trigger('error');
return;
} // Although transmuxing is done, appends may not yet be finished. Throw a marker
// on each queue this loader is responsible for to ensure that the appends are
// complete.
const {
hasAudio,
hasVideo,
isMuxed
} = trackInfo;
const waitForVideo = this.loaderType_ === 'main' && hasVideo;
const waitForAudio = !this.audioDisabled_ && hasAudio && !isMuxed;
segmentInfo.waitingOnAppends = 0; // segments with no data
if (!segmentInfo.hasAppendedData_) {
if (!segmentInfo.timingInfo && typeof segmentInfo.timestampOffset === 'number') {
// When there's no audio or video data in the segment, there's no audio or video
// timing information.
//
// If there's no audio or video timing information, then the timestamp offset
// can't be adjusted to the appropriate value for the transmuxer and source
// buffers.
//
// Therefore, the next segment should be used to set the timestamp offset.
this.isPendingTimestampOffset_ = true;
} // override settings for metadata only segments
segmentInfo.timingInfo = {
start: 0
};
segmentInfo.waitingOnAppends++;
if (!this.isPendingTimestampOffset_) {
// update the timestampoffset
this.updateSourceBufferTimestampOffset_(segmentInfo); // make sure the metadata queue is processed even though we have
// no video/audio data.
this.processMetadataQueue_();
} // append is "done" instantly with no data.
this.checkAppendsDone_(segmentInfo);
return;
} // Since source updater could call back synchronously, do the increments first.
if (waitForVideo) {
segmentInfo.waitingOnAppends++;
}
if (waitForAudio) {
segmentInfo.waitingOnAppends++;
}
if (waitForVideo) {
this.sourceUpdater_.videoQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
}
if (waitForAudio) {
this.sourceUpdater_.audioQueueCallback(this.checkAppendsDone_.bind(this, segmentInfo));
}
}
checkAppendsDone_(segmentInfo) {
if (this.checkForAbort_(segmentInfo.requestId)) {
return;
}
segmentInfo.waitingOnAppends--;
if (segmentInfo.waitingOnAppends === 0) {
this.handleAppendsDone_();
}
}
checkForIllegalMediaSwitch(trackInfo) {
const illegalMediaSwitchError = illegalMediaSwitch(this.loaderType_, this.getCurrentMediaInfo_(), trackInfo);
if (illegalMediaSwitchError) {
this.error({
message: illegalMediaSwitchError,
playlistExclusionDuration: Infinity
});
this.trigger('error');
return true;
}
return false;
}
updateSourceBufferTimestampOffset_(segmentInfo) {
if (segmentInfo.timestampOffset === null ||
// we don't yet have the start for whatever media type (video or audio) has
// priority, timing-wise, so we must wait
typeof segmentInfo.timingInfo.start !== 'number' ||
// already updated the timestamp offset for this segment
segmentInfo.changedTimestampOffset ||
// the alt audio loader should not be responsible for setting the timestamp offset
this.loaderType_ !== 'main') {
return;
}
let didChange = false; // Primary timing goes by video, and audio is trimmed in the transmuxer, meaning that
// the timing info here comes from video. In the event that the audio is longer than
// the video, this will trim the start of the audio.
// This also trims any offset from 0 at the beginning of the media
segmentInfo.timestampOffset -= this.getSegmentStartTimeForTimestampOffsetCalculation_({
videoTimingInfo: segmentInfo.segment.videoTimingInfo,
audioTimingInfo: segmentInfo.segment.audioTimingInfo,
timingInfo: segmentInfo.timingInfo
}); // In the event that there are part segment downloads, each will try to update the
// timestamp offset. Retaining this bit of state prevents us from updating in the
// future (within the same segment), however, there may be a better way to handle it.
segmentInfo.changedTimestampOffset = true;
if (segmentInfo.timestampOffset !== this.sourceUpdater_.videoTimestampOffset()) {
this.sourceUpdater_.videoTimestampOffset(segmentInfo.timestampOffset);
didChange = true;
}
if (segmentInfo.timestampOffset !== this.sourceUpdater_.audioTimestampOffset()) {
this.sourceUpdater_.audioTimestampOffset(segmentInfo.timestampOffset);
didChange = true;
}
if (didChange) {
this.trigger('timestampoffset');
}
}
getSegmentStartTimeForTimestampOffsetCalculation_({
videoTimingInfo,
audioTimingInfo,
timingInfo
}) {
if (!this.useDtsForTimestampOffset_) {
return timingInfo.start;
}
if (videoTimingInfo && typeof videoTimingInfo.transmuxedDecodeStart === 'number') {
return videoTimingInfo.transmuxedDecodeStart;
} // handle audio only
if (audioTimingInfo && typeof audioTimingInfo.transmuxedDecodeStart === 'number') {
return audioTimingInfo.transmuxedDecodeStart;
} // handle content not transmuxed (e.g., MP4)
return timingInfo.start;
}
updateTimingInfoEnd_(segmentInfo) {
segmentInfo.timingInfo = segmentInfo.timingInfo || {};
const trackInfo = this.getMediaInfo_();
const useVideoTimingInfo = this.loaderType_ === 'main' && trackInfo && trackInfo.hasVideo;
const prioritizedTimingInfo = useVideoTimingInfo && segmentInfo.videoTimingInfo ? segmentInfo.videoTimingInfo : segmentInfo.audioTimingInfo;
if (!prioritizedTimingInfo) {
return;
}
segmentInfo.timingInfo.end = typeof prioritizedTimingInfo.end === 'number' ?
// End time may not exist in a case where we aren't parsing the full segment (one
// current example is the case of fmp4), so use the rough duration to calculate an
// end time.
prioritizedTimingInfo.end : prioritizedTimingInfo.start + segmentInfo.duration;
}
/**
* callback to run when appendBuffer is finished. detects if we are
* in a good state to do things with the data we got, or if we need
* to wait for more
*
* @private
*/
handleAppendsDone_() {
// appendsdone can cause an abort
if (this.pendingSegment_) {
const metadata = {
segmentInfo: segmentInfoPayload({
type: this.loaderType_,
segment: this.pendingSegment_
})
};
this.trigger({
type: 'appendsdone',
metadata
});
}
if (!this.pendingSegment_) {
this.state = 'READY'; // TODO should this move into this.checkForAbort to speed up requests post abort in
// all appending cases?
if (!this.paused()) {
this.monitorBuffer_();
}
return;
}
const segmentInfo = this.pendingSegment_;
if (segmentInfo.part && segmentInfo.part.syncInfo) {
// low-latency flow
segmentInfo.part.syncInfo.markAppended();
} else if (segmentInfo.segment.syncInfo) {
// normal flow
segmentInfo.segment.syncInfo.markAppended();
} // Now that the end of the segment has been reached, we can set the end time. It's
// best to wait until all appends are done so we're sure that the primary media is
// finished (and we have its end time).
this.updateTimingInfoEnd_(segmentInfo);
if (this.shouldSaveSegmentTimingInfo_) {
// Timeline mappings should only be saved for the main loader. This is for multiple
// reasons:
//
// 1) Only one mapping is saved per timeline, meaning that if both the audio loader
// and the main loader try to save the timeline mapping, whichever comes later
// will overwrite the first. In theory this is OK, as the mappings should be the
// same, however, it breaks for (2)
// 2) In the event of a live stream, the initial live point will make for a somewhat
// arbitrary mapping. If audio and video streams are not perfectly in-sync, then
// the mapping will be off for one of the streams, dependent on which one was
// first saved (see (1)).
// 3) Primary timing goes by video in VHS, so the mapping should be video.
//
// Since the audio loader will wait for the main loader to load the first segment,
// the main loader will save the first timeline mapping, and ensure that there won't
// be a case where audio loads two segments without saving a mapping (thus leading
// to missing segment timing info).
this.syncController_.saveSegmentTimingInfo({
segmentInfo,
shouldSaveTimelineMapping: this.loaderType_ === 'main'
});
}
const segmentDurationMessage = getTroublesomeSegmentDurationMessage(segmentInfo, this.sourceType_);
if (segmentDurationMessage) {
if (segmentDurationMessage.severity === 'warn') {
videojs.log.warn(segmentDurationMessage.message);
} else {
this.logger_(segmentDurationMessage.message);
}
}
this.recordThroughput_(segmentInfo);
this.pendingSegment_ = null;
this.state = 'READY';
if (segmentInfo.isSyncRequest) {
this.trigger('syncinfoupdate'); // if the sync request was not appended
// then it was not the correct segment.
// throw it away and use the data it gave us
// to get the correct one.
if (!segmentInfo.hasAppendedData_) {
this.logger_(`Throwing away un-appended sync request ${segmentInfoString(segmentInfo)}`);
return;
}
}
this.logger_(`Appended ${segmentInfoString(segmentInfo)}`);
this.addSegmentMetadataCue_(segmentInfo);
this.fetchAtBuffer_ = true;
if (this.currentTimeline_ !== segmentInfo.timeline) {
this.timelineChangeController_.lastTimelineChange({
type: this.loaderType_,
from: this.currentTimeline_,
to: segmentInfo.timeline
}); // If audio is not disabled, the main segment loader is responsible for updating
// the audio timeline as well. If the content is video only, this won't have any
// impact.
if (this.loaderType_ === 'main' && !this.audioDisabled_) {
this.timelineChangeController_.lastTimelineChange({
type: 'audio',
from: this.currentTimeline_,
to: segmentInfo.timeline
});
}
}
this.currentTimeline_ = segmentInfo.timeline; // We must update the syncinfo to recalculate the seekable range before
// the following conditional otherwise it may consider this a bad "guess"
// and attempt to resync when the post-update seekable window and live
// point would mean that this was the perfect segment to fetch
this.trigger('syncinfoupdate');
const segment = segmentInfo.segment;
const part = segmentInfo.part;
const badSegmentGuess = segment.end && this.currentTime_() - segment.end > segmentInfo.playlist.targetDuration * 3;
const badPartGuess = part && part.end && this.currentTime_() - part.end > segmentInfo.playlist.partTargetDuration * 3; // If we previously appended a segment/part that ends more than 3 part/targetDurations before
// the currentTime_ that means that our conservative guess was too conservative.
// In that case, reset the loader state so that we try to use any information gained
// from the previous request to create a new, more accurate, sync-point.
if (badSegmentGuess || badPartGuess) {
this.logger_(`bad ${badSegmentGuess ? 'segment' : 'part'} ${segmentInfoString(segmentInfo)}`);
this.resetEverything();
return;
}
const isWalkingForward = this.mediaIndex !== null; // Don't do a rendition switch unless we have enough time to get a sync segment
// and conservatively guess
if (isWalkingForward) {
this.trigger('bandwidthupdate');
}
this.trigger('progress');
this.mediaIndex = segmentInfo.mediaIndex;
this.partIndex = segmentInfo.partIndex; // any time an update finishes and the last segment is in the
// buffer, end the stream. this ensures the "ended" event will
// fire if playback reaches that point.
if (this.isEndOfStream_(segmentInfo.mediaIndex, segmentInfo.playlist, segmentInfo.partIndex)) {
this.endOfStream();
} // used for testing
this.trigger('appended');
if (segmentInfo.hasAppendedData_) {
this.mediaAppends++;
}
if (!this.paused()) {
this.monitorBuffer_();
}
}
/**
* Records the current throughput of the decrypt, transmux, and append
* portion of the semgment pipeline. `throughput.rate` is a the cumulative
* moving average of the throughput. `throughput.count` is the number of
* data points in the average.
*
* @private
* @param {Object} segmentInfo the object returned by loadSegment
*/
recordThroughput_(segmentInfo) {
if (segmentInfo.duration < MIN_SEGMENT_DURATION_TO_SAVE_STATS) {
this.logger_(`Ignoring segment's throughput because its duration of ${segmentInfo.duration}` + ` is less than the min to record ${MIN_SEGMENT_DURATION_TO_SAVE_STATS}`);
return;
}
const rate = this.throughput.rate; // Add one to the time to ensure that we don't accidentally attempt to divide
// by zero in the case where the throughput is ridiculously high
const segmentProcessingTime = Date.now() - segmentInfo.endOfAllRequests + 1; // Multiply by 8000 to convert from bytes/millisecond to bits/second
const segmentProcessingThroughput = Math.floor(segmentInfo.byteLength / segmentProcessingTime * 8 * 1000); // This is just a cumulative moving average calculation:
// newAvg = oldAvg + (sample - oldAvg) / (sampleCount + 1)
this.throughput.rate += (segmentProcessingThroughput - rate) / ++this.throughput.count;
}
/**
* Adds a cue to the segment-metadata track with some metadata information about the
* segment
*
* @private
* @param {Object} segmentInfo
* the object returned by loadSegment
* @method addSegmentMetadataCue_
*/
addSegmentMetadataCue_(segmentInfo) {
if (!this.segmentMetadataTrack_) {
return;
}
const segment = segmentInfo.segment;
const start = segment.start;
const end = segment.end; // Do not try adding the cue if the start and end times are invalid.
if (!finite(start) || !finite(end)) {
return;
}
removeCuesFromTrack(start, end, this.segmentMetadataTrack_);
const Cue = window.WebKitDataCue || window.VTTCue;
const value = {
custom: segment.custom,
dateTimeObject: segment.dateTimeObject,
dateTimeString: segment.dateTimeString,
programDateTime: segment.programDateTime,
bandwidth: segmentInfo.playlist.attributes.BANDWIDTH,
resolution: segmentInfo.playlist.attributes.RESOLUTION,
codecs: segmentInfo.playlist.attributes.CODECS,
byteLength: segmentInfo.byteLength,
uri: segmentInfo.uri,
timeline: segmentInfo.timeline,
playlist: segmentInfo.playlist.id,
start,
end
};
const data = JSON.stringify(value);
const cue = new Cue(start, end, data); // Attach the metadata to the value property of the cue to keep consistency between
// the differences of WebKitDataCue in safari and VTTCue in other browsers
cue.value = value;
this.segmentMetadataTrack_.addCue(cue);
}
}
function noop() {}
const toTitleCase = function (string) {
if (typeof string !== 'string') {
return string;
}
return string.replace(/./, w => w.toUpperCase());
};
/**
* @file source-updater.js
*/
const bufferTypes = ['video', 'audio'];
const updating = (type, sourceUpdater) => {
const sourceBuffer = sourceUpdater[`${type}Buffer`];
return sourceBuffer && sourceBuffer.updating || sourceUpdater.queuePending[type];
};
const nextQueueIndexOfType = (type, queue) => {
for (let i = 0; i < queue.length; i++) {
const queueEntry = queue[i];
if (queueEntry.type === 'mediaSource') {
// If the next entry is a media source entry (uses multiple source buffers), block
// processing to allow it to go through first.
return null;
}
if (queueEntry.type === type) {
return i;
}
}
return null;
};
const shiftQueue = (type, sourceUpdater) => {
if (sourceUpdater.queue.length === 0) {
return;
}
let queueIndex = 0;
let queueEntry = sourceUpdater.queue[queueIndex];
if (queueEntry.type === 'mediaSource') {
if (!sourceUpdater.updating() && sourceUpdater.mediaSource.readyState !== 'closed') {
sourceUpdater.queue.shift();
queueEntry.action(sourceUpdater);
if (queueEntry.doneFn) {
queueEntry.doneFn();
} // Only specific source buffer actions must wait for async updateend events. Media
// Source actions process synchronously. Therefore, both audio and video source
// buffers are now clear to process the next queue entries.
shiftQueue('audio', sourceUpdater);
shiftQueue('video', sourceUpdater);
} // Media Source actions require both source buffers, so if the media source action
// couldn't process yet (because one or both source buffers are busy), block other
// queue actions until both are available and the media source action can process.
return;
}
if (type === 'mediaSource') {
// If the queue was shifted by a media source action (this happens when pushing a
// media source action onto the queue), then it wasn't from an updateend event from an
// audio or video source buffer, so there's no change from previous state, and no
// processing should be done.
return;
} // Media source queue entries don't need to consider whether the source updater is
// started (i.e., source buffers are created) as they don't need the source buffers, but
// source buffer queue entries do.
if (!sourceUpdater.ready() || sourceUpdater.mediaSource.readyState === 'closed' || updating(type, sourceUpdater)) {
return;
}
if (queueEntry.type !== type) {
queueIndex = nextQueueIndexOfType(type, sourceUpdater.queue);
if (queueIndex === null) {
// Either there's no queue entry that uses this source buffer type in the queue, or
// there's a media source queue entry before the next entry of this type, in which
// case wait for that action to process first.
return;
}
queueEntry = sourceUpdater.queue[queueIndex];
}
sourceUpdater.queue.splice(queueIndex, 1); // Keep a record that this source buffer type is in use.
//
// The queue pending operation must be set before the action is performed in the event
// that the action results in a synchronous event that is acted upon. For instance, if
// an exception is thrown that can be handled, it's possible that new actions will be
// appended to an empty queue and immediately executed, but would not have the correct
// pending information if this property was set after the action was performed.
sourceUpdater.queuePending[type] = queueEntry;
queueEntry.action(type, sourceUpdater);
if (!queueEntry.doneFn) {
// synchronous operation, process next entry
sourceUpdater.queuePending[type] = null;
shiftQueue(type, sourceUpdater);
return;
}
};
const cleanupBuffer = (type, sourceUpdater) => {
const buffer = sourceUpdater[`${type}Buffer`];
const titleType = toTitleCase(type);
if (!buffer) {
return;
}
buffer.removeEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
buffer.removeEventListener('error', sourceUpdater[`on${titleType}Error_`]);
sourceUpdater.codecs[type] = null;
sourceUpdater[`${type}Buffer`] = null;
};
const inSourceBuffers = (mediaSource, sourceBuffer) => mediaSource && sourceBuffer && Array.prototype.indexOf.call(mediaSource.sourceBuffers, sourceBuffer) !== -1;
const actions = {
appendBuffer: (bytes, segmentInfo, onError) => (type, sourceUpdater) => {
const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
}
sourceUpdater.logger_(`Appending segment ${segmentInfo.mediaIndex}'s ${bytes.length} bytes to ${type}Buffer`);
try {
sourceBuffer.appendBuffer(bytes);
} catch (e) {
sourceUpdater.logger_(`Error with code ${e.code} ` + (e.code === QUOTA_EXCEEDED_ERR ? '(QUOTA_EXCEEDED_ERR) ' : '') + `when appending segment ${segmentInfo.mediaIndex} to ${type}Buffer`);
sourceUpdater.queuePending[type] = null;
onError(e);
}
},
remove: (start, end) => (type, sourceUpdater) => {
const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
}
sourceUpdater.logger_(`Removing ${start} to ${end} from ${type}Buffer`);
try {
sourceBuffer.remove(start, end);
} catch (e) {
sourceUpdater.logger_(`Remove ${start} to ${end} from ${type}Buffer failed`);
}
},
timestampOffset: offset => (type, sourceUpdater) => {
const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
}
sourceUpdater.logger_(`Setting ${type}timestampOffset to ${offset}`);
sourceBuffer.timestampOffset = offset;
},
callback: callback => (type, sourceUpdater) => {
callback();
},
endOfStream: error => sourceUpdater => {
if (sourceUpdater.mediaSource.readyState !== 'open') {
return;
}
sourceUpdater.logger_(`Calling mediaSource endOfStream(${error || ''})`);
try {
sourceUpdater.mediaSource.endOfStream(error);
} catch (e) {
videojs.log.warn('Failed to call media source endOfStream', e);
}
},
duration: duration => sourceUpdater => {
sourceUpdater.logger_(`Setting mediaSource duration to ${duration}`);
try {
sourceUpdater.mediaSource.duration = duration;
} catch (e) {
videojs.log.warn('Failed to set media source duration', e);
}
},
abort: () => (type, sourceUpdater) => {
if (sourceUpdater.mediaSource.readyState !== 'open') {
return;
}
const sourceBuffer = sourceUpdater[`${type}Buffer`]; // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
}
sourceUpdater.logger_(`calling abort on ${type}Buffer`);
try {
sourceBuffer.abort();
} catch (e) {
videojs.log.warn(`Failed to abort on ${type}Buffer`, e);
}
},
addSourceBuffer: (type, codec) => sourceUpdater => {
const titleType = toTitleCase(type);
const mime = getMimeForCodec(codec);
sourceUpdater.logger_(`Adding ${type}Buffer with codec ${codec} to mediaSource`);
const sourceBuffer = sourceUpdater.mediaSource.addSourceBuffer(mime);
sourceBuffer.addEventListener('updateend', sourceUpdater[`on${titleType}UpdateEnd_`]);
sourceBuffer.addEventListener('error', sourceUpdater[`on${titleType}Error_`]);
sourceUpdater.codecs[type] = codec;
sourceUpdater[`${type}Buffer`] = sourceBuffer;
},
removeSourceBuffer: type => sourceUpdater => {
const sourceBuffer = sourceUpdater[`${type}Buffer`];
cleanupBuffer(type, sourceUpdater); // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
}
sourceUpdater.logger_(`Removing ${type}Buffer with codec ${sourceUpdater.codecs[type]} from mediaSource`);
try {
sourceUpdater.mediaSource.removeSourceBuffer(sourceBuffer);
} catch (e) {
videojs.log.warn(`Failed to removeSourceBuffer ${type}Buffer`, e);
}
},
changeType: codec => (type, sourceUpdater) => {
const sourceBuffer = sourceUpdater[`${type}Buffer`];
const mime = getMimeForCodec(codec); // can't do anything if the media source / source buffer is null
// or the media source does not contain this source buffer.
if (!inSourceBuffers(sourceUpdater.mediaSource, sourceBuffer)) {
return;
} // do not update codec if we don't need to.
// Only update if we change the codec base.
// For example, going from avc1.640028 to avc1.64001f does not require a changeType call.
const newCodecBase = codec.substring(0, codec.indexOf('.'));
const oldCodec = sourceUpdater.codecs[type];
const oldCodecBase = oldCodec.substring(0, oldCodec.indexOf('.'));
if (oldCodecBase === newCodecBase) {
return;
}
const metadata = {
codecsChangeInfo: {
from: oldCodec,
to: codec
}
};
sourceUpdater.trigger({
type: 'codecschange',
metadata
});
sourceUpdater.logger_(`changing ${type}Buffer codec from ${oldCodec} to ${codec}`); // check if change to the provided type is supported
try {
sourceBuffer.changeType(mime);
sourceUpdater.codecs[type] = codec;
} catch (e) {
metadata.errorType = videojs.Error.StreamingCodecsChangeError;
metadata.error = e;
e.metadata = metadata;
sourceUpdater.error_ = e;
sourceUpdater.trigger('error');
videojs.log.warn(`Failed to changeType on ${type}Buffer`, e);
}
}
};
const pushQueue = ({
type,
sourceUpdater,
action,
doneFn,
name
}) => {
sourceUpdater.queue.push({
type,
action,
doneFn,
name
});
shiftQueue(type, sourceUpdater);
};
const onUpdateend = (type, sourceUpdater) => e => {
// Although there should, in theory, be a pending action for any updateend receieved,
// there are some actions that may trigger updateend events without set definitions in
// the w3c spec. For instance, setting the duration on the media source may trigger
// updateend events on source buffers. This does not appear to be in the spec. As such,
// if we encounter an updateend without a corresponding pending action from our queue
// for that source buffer type, process the next action.
const bufferedRangesForType = sourceUpdater[`${type}Buffered`]();
const descriptiveString = bufferedRangesToString(bufferedRangesForType);
sourceUpdater.logger_(`received "updateend" event for ${type} Source Buffer: `, descriptiveString);
if (sourceUpdater.queuePending[type]) {
const doneFn = sourceUpdater.queuePending[type].doneFn;
sourceUpdater.queuePending[type] = null;
if (doneFn) {
// if there's an error, report it
doneFn(sourceUpdater[`${type}Error_`]);
}
}
shiftQueue(type, sourceUpdater);
};
/**
* A queue of callbacks to be serialized and applied when a
* MediaSource and its associated SourceBuffers are not in the
* updating state. It is used by the segment loader to update the
* underlying SourceBuffers when new data is loaded, for instance.
*
* @class SourceUpdater
* @param {MediaSource} mediaSource the MediaSource to create the SourceBuffer from
* @param {string} mimeType the desired MIME type of the underlying SourceBuffer
*/
class SourceUpdater extends videojs.EventTarget {
constructor(mediaSource) {
super();
this.mediaSource = mediaSource;
this.sourceopenListener_ = () => shiftQueue('mediaSource', this);
this.mediaSource.addEventListener('sourceopen', this.sourceopenListener_);
this.logger_ = logger('SourceUpdater'); // initial timestamp offset is 0
this.audioTimestampOffset_ = 0;
this.videoTimestampOffset_ = 0;
this.queue = [];
this.queuePending = {
audio: null,
video: null
};
this.delayedAudioAppendQueue_ = [];
this.videoAppendQueued_ = false;
this.codecs = {};
this.onVideoUpdateEnd_ = onUpdateend('video', this);
this.onAudioUpdateEnd_ = onUpdateend('audio', this);
this.onVideoError_ = e => {
// used for debugging
this.videoError_ = e;
};
this.onAudioError_ = e => {
// used for debugging
this.audioError_ = e;
};
this.createdSourceBuffers_ = false;
this.initializedEme_ = false;
this.triggeredReady_ = false;
}
initializedEme() {
this.initializedEme_ = true;
this.triggerReady();
}
hasCreatedSourceBuffers() {
// if false, likely waiting on one of the segment loaders to get enough data to create
// source buffers
return this.createdSourceBuffers_;
}
hasInitializedAnyEme() {
return this.initializedEme_;
}
ready() {
return this.hasCreatedSourceBuffers() && this.hasInitializedAnyEme();
}
createSourceBuffers(codecs) {
if (this.hasCreatedSourceBuffers()) {
// already created them before
return;
} // the intial addOrChangeSourceBuffers will always be
// two add buffers.
this.addOrChangeSourceBuffers(codecs);
this.createdSourceBuffers_ = true;
this.trigger('createdsourcebuffers');
this.triggerReady();
}
triggerReady() {
// only allow ready to be triggered once, this prevents the case
// where:
// 1. we trigger createdsourcebuffers
// 2. ie 11 synchronously initializates eme
// 3. the synchronous initialization causes us to trigger ready
// 4. We go back to the ready check in createSourceBuffers and ready is triggered again.
if (this.ready() && !this.triggeredReady_) {
this.triggeredReady_ = true;
this.trigger('ready');
}
}
/**
* Add a type of source buffer to the media source.
*
* @param {string} type
* The type of source buffer to add.
*
* @param {string} codec
* The codec to add the source buffer with.
*/
addSourceBuffer(type, codec) {
pushQueue({
type: 'mediaSource',
sourceUpdater: this,
action: actions.addSourceBuffer(type, codec),
name: 'addSourceBuffer'
});
}
/**
* call abort on a source buffer.
*
* @param {string} type
* The type of source buffer to call abort on.
*/
abort(type) {
pushQueue({
type,
sourceUpdater: this,
action: actions.abort(type),
name: 'abort'
});
}
/**
* Call removeSourceBuffer and remove a specific type
* of source buffer on the mediaSource.
*
* @param {string} type
* The type of source buffer to remove.
*/
removeSourceBuffer(type) {
if (!this.canRemoveSourceBuffer()) {
videojs.log.error('removeSourceBuffer is not supported!');
return;
}
pushQueue({
type: 'mediaSource',
sourceUpdater: this,
action: actions.removeSourceBuffer(type),
name: 'removeSourceBuffer'
});
}
/**
* Whether or not the removeSourceBuffer function is supported
* on the mediaSource.
*
* @return {boolean}
* if removeSourceBuffer can be called.
*/
canRemoveSourceBuffer() {
// As of Firefox 83 removeSourceBuffer
// throws errors, so we report that it does not support this.
return !videojs.browser.IS_FIREFOX && window.MediaSource && window.MediaSource.prototype && typeof window.MediaSource.prototype.removeSourceBuffer === 'function';
}
/**
* Whether or not the changeType function is supported
* on our SourceBuffers.
*
* @return {boolean}
* if changeType can be called.
*/
static canChangeType() {
return window.SourceBuffer && window.SourceBuffer.prototype && typeof window.SourceBuffer.prototype.changeType === 'function';
}
/**
* Whether or not the changeType function is supported
* on our SourceBuffers.
*
* @return {boolean}
* if changeType can be called.
*/
canChangeType() {
return this.constructor.canChangeType();
}
/**
* Call the changeType function on a source buffer, given the code and type.
*
* @param {string} type
* The type of source buffer to call changeType on.
*
* @param {string} codec
* The codec string to change type with on the source buffer.
*/
changeType(type, codec) {
if (!this.canChangeType()) {
videojs.log.error('changeType is not supported!');
return;
}
pushQueue({
type,
sourceUpdater: this,
action: actions.changeType(codec),
name: 'changeType'
});
}
/**
* Add source buffers with a codec or, if they are already created,
* call changeType on source buffers using changeType.
*
* @param {Object} codecs
* Codecs to switch to
*/
addOrChangeSourceBuffers(codecs) {
if (!codecs || typeof codecs !== 'object' || Object.keys(codecs).length === 0) {
throw new Error('Cannot addOrChangeSourceBuffers to undefined codecs');
}
Object.keys(codecs).forEach(type => {
const codec = codecs[type];
if (!this.hasCreatedSourceBuffers()) {
return this.addSourceBuffer(type, codec);
}
if (this.canChangeType()) {
this.changeType(type, codec);
}
});
}
/**
* Queue an update to append an ArrayBuffer.
*
* @param {MediaObject} object containing audioBytes and/or videoBytes
* @param {Function} done the function to call when done
* @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-appendBuffer-void-ArrayBuffer-data
*/
appendBuffer(options, doneFn) {
const {
segmentInfo,
type,
bytes
} = options;
this.processedAppend_ = true;
if (type === 'audio' && this.videoBuffer && !this.videoAppendQueued_) {
this.delayedAudioAppendQueue_.push([options, doneFn]);
this.logger_(`delayed audio append of ${bytes.length} until video append`);
return;
} // In the case of certain errors, for instance, QUOTA_EXCEEDED_ERR, updateend will
// not be fired. This means that the queue will be blocked until the next action
// taken by the segment-loader. Provide a mechanism for segment-loader to handle
// these errors by calling the doneFn with the specific error.
const onError = doneFn;
pushQueue({
type,
sourceUpdater: this,
action: actions.appendBuffer(bytes, segmentInfo || {
mediaIndex: -1
}, onError),
doneFn,
name: 'appendBuffer'
});
if (type === 'video') {
this.videoAppendQueued_ = true;
if (!this.delayedAudioAppendQueue_.length) {
return;
}
const queue = this.delayedAudioAppendQueue_.slice();
this.logger_(`queuing delayed audio ${queue.length} appendBuffers`);
this.delayedAudioAppendQueue_.length = 0;
queue.forEach(que => {
this.appendBuffer.apply(this, que);
});
}
}
/**
* Get the audio buffer's buffered timerange.
*
* @return {TimeRange}
* The audio buffer's buffered time range
*/
audioBuffered() {
// no media source/source buffer or it isn't in the media sources
// source buffer list
if (!inSourceBuffers(this.mediaSource, this.audioBuffer)) {
return createTimeRanges();
}
return this.audioBuffer.buffered ? this.audioBuffer.buffered : createTimeRanges();
}
/**
* Get the video buffer's buffered timerange.
*
* @return {TimeRange}
* The video buffer's buffered time range
*/
videoBuffered() {
// no media source/source buffer or it isn't in the media sources
// source buffer list
if (!inSourceBuffers(this.mediaSource, this.videoBuffer)) {
return createTimeRanges();
}
return this.videoBuffer.buffered ? this.videoBuffer.buffered : createTimeRanges();
}
/**
* Get a combined video/audio buffer's buffered timerange.
*
* @return {TimeRange}
* the combined time range
*/
buffered() {
const video = inSourceBuffers(this.mediaSource, this.videoBuffer) ? this.videoBuffer : null;
const audio = inSourceBuffers(this.mediaSource, this.audioBuffer) ? this.audioBuffer : null;
if (audio && !video) {
return this.audioBuffered();
}
if (video && !audio) {
return this.videoBuffered();
}
return bufferIntersection(this.audioBuffered(), this.videoBuffered());
}
/**
* Add a callback to the queue that will set duration on the mediaSource.
*
* @param {number} duration
* The duration to set
*
* @param {Function} [doneFn]
* function to run after duration has been set.
*/
setDuration(duration, doneFn = noop) {
// In order to set the duration on the media source, it's necessary to wait for all
// source buffers to no longer be updating. "If the updating attribute equals true on
// any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
// abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
pushQueue({
type: 'mediaSource',
sourceUpdater: this,
action: actions.duration(duration),
name: 'duration',
doneFn
});
}
/**
* Add a mediaSource endOfStream call to the queue
*
* @param {Error} [error]
* Call endOfStream with an error
*
* @param {Function} [doneFn]
* A function that should be called when the
* endOfStream call has finished.
*/
endOfStream(error = null, doneFn = noop) {
if (typeof error !== 'string') {
error = undefined;
} // In order to set the duration on the media source, it's necessary to wait for all
// source buffers to no longer be updating. "If the updating attribute equals true on
// any SourceBuffer in sourceBuffers, then throw an InvalidStateError exception and
// abort these steps." (source: https://www.w3.org/TR/media-source/#attributes).
pushQueue({
type: 'mediaSource',
sourceUpdater: this,
action: actions.endOfStream(error),
name: 'endOfStream',
doneFn
});
}
/**
* Queue an update to remove a time range from the buffer.
*
* @param {number} start where to start the removal
* @param {number} end where to end the removal
* @param {Function} [done=noop] optional callback to be executed when the remove
* operation is complete
* @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
*/
removeAudio(start, end, done = noop) {
if (!this.audioBuffered().length || this.audioBuffered().end(0) === 0) {
done();
return;
}
pushQueue({
type: 'audio',
sourceUpdater: this,
action: actions.remove(start, end),
doneFn: done,
name: 'remove'
});
}
/**
* Queue an update to remove a time range from the buffer.
*
* @param {number} start where to start the removal
* @param {number} end where to end the removal
* @param {Function} [done=noop] optional callback to be executed when the remove
* operation is complete
* @see http://www.w3.org/TR/media-source/#widl-SourceBuffer-remove-void-double-start-unrestricted-double-end
*/
removeVideo(start, end, done = noop) {
if (!this.videoBuffered().length || this.videoBuffered().end(0) === 0) {
done();
return;
}
pushQueue({
type: 'video',
sourceUpdater: this,
action: actions.remove(start, end),
doneFn: done,
name: 'remove'
});
}
/**
* Whether the underlying sourceBuffer is updating or not
*
* @return {boolean} the updating status of the SourceBuffer
*/
updating() {
// the audio/video source buffer is updating
if (updating('audio', this) || updating('video', this)) {
return true;
}
return false;
}
/**
* Set/get the timestampoffset on the audio SourceBuffer
*
* @return {number} the timestamp offset
*/
audioTimestampOffset(offset) {
if (typeof offset !== 'undefined' && this.audioBuffer &&
// no point in updating if it's the same
this.audioTimestampOffset_ !== offset) {
pushQueue({
type: 'audio',
sourceUpdater: this,
action: actions.timestampOffset(offset),
name: 'timestampOffset'
});
this.audioTimestampOffset_ = offset;
}
return this.audioTimestampOffset_;
}
/**
* Set/get the timestampoffset on the video SourceBuffer
*
* @return {number} the timestamp offset
*/
videoTimestampOffset(offset) {
if (typeof offset !== 'undefined' && this.videoBuffer &&
// no point in updating if it's the same
this.videoTimestampOffset_ !== offset) {
pushQueue({
type: 'video',
sourceUpdater: this,
action: actions.timestampOffset(offset),
name: 'timestampOffset'
});
this.videoTimestampOffset_ = offset;
}
return this.videoTimestampOffset_;
}
/**
* Add a function to the queue that will be called
* when it is its turn to run in the audio queue.
*
* @param {Function} callback
* The callback to queue.
*/
audioQueueCallback(callback) {
if (!this.audioBuffer) {
return;
}
pushQueue({
type: 'audio',
sourceUpdater: this,
action: actions.callback(callback),
name: 'callback'
});
}
/**
* Add a function to the queue that will be called
* when it is its turn to run in the video queue.
*
* @param {Function} callback
* The callback to queue.
*/
videoQueueCallback(callback) {
if (!this.videoBuffer) {
return;
}
pushQueue({
type: 'video',
sourceUpdater: this,
action: actions.callback(callback),
name: 'callback'
});
}
/**
* dispose of the source updater and the underlying sourceBuffer
*/
dispose() {
this.trigger('dispose');
bufferTypes.forEach(type => {
this.abort(type);
if (this.canRemoveSourceBuffer()) {
this.removeSourceBuffer(type);
} else {
this[`${type}QueueCallback`](() => cleanupBuffer(type, this));
}
});
this.videoAppendQueued_ = false;
this.delayedAudioAppendQueue_.length = 0;
if (this.sourceopenListener_) {
this.mediaSource.removeEventListener('sourceopen', this.sourceopenListener_);
}
this.off();
}
}
const uint8ToUtf8 = uintArray => decodeURIComponent(escape(String.fromCharCode.apply(null, uintArray)));
const bufferToHexString = buffer => {
const uInt8Buffer = new Uint8Array(buffer);
return Array.from(uInt8Buffer).map(byte => byte.toString(16).padStart(2, '0')).join('');
};
/**
* @file vtt-segment-loader.js
*/
const VTT_LINE_TERMINATORS = new Uint8Array('\n\n'.split('').map(char => char.charCodeAt(0)));
class NoVttJsError extends Error {
constructor() {
super('Trying to parse received VTT cues, but there is no WebVTT. Make sure vtt.js is loaded.');
}
}
/**
* An object that manages segment loading and appending.
*
* @class VTTSegmentLoader
* @param {Object} options required and optional options
* @extends videojs.EventTarget
*/
class VTTSegmentLoader extends SegmentLoader {
constructor(settings, options = {}) {
super(settings, options); // SegmentLoader requires a MediaSource be specified or it will throw an error;
// however, VTTSegmentLoader has no need of a media source, so delete the reference
this.mediaSource_ = null;
this.subtitlesTrack_ = null;
this.featuresNativeTextTracks_ = settings.featuresNativeTextTracks;
this.loadVttJs = settings.loadVttJs; // The VTT segment will have its own time mappings. Saving VTT segment timing info in
// the sync controller leads to improper behavior.
this.shouldSaveSegmentTimingInfo_ = false;
}
createTransmuxer_() {
// don't need to transmux any subtitles
return null;
}
/**
* Indicates which time ranges are buffered
*
* @return {TimeRange}
* TimeRange object representing the current buffered ranges
*/
buffered_() {
if (!this.subtitlesTrack_ || !this.subtitlesTrack_.cues || !this.subtitlesTrack_.cues.length) {
return createTimeRanges();
}
const cues = this.subtitlesTrack_.cues;
const start = cues[0].startTime;
const end = cues[cues.length - 1].startTime;
return createTimeRanges([[start, end]]);
}
/**
* Gets and sets init segment for the provided map
*
* @param {Object} map
* The map object representing the init segment to get or set
* @param {boolean=} set
* If true, the init segment for the provided map should be saved
* @return {Object}
* map object for desired init segment
*/
initSegmentForMap(map, set = false) {
if (!map) {
return null;
}
const id = initSegmentId(map);
let storedMap = this.initSegments_[id];
if (set && !storedMap && map.bytes) {
// append WebVTT line terminators to the media initialization segment if it exists
// to follow the WebVTT spec (https://w3c.github.io/webvtt/#file-structure) that
// requires two or more WebVTT line terminators between the WebVTT header and the
// rest of the file
const combinedByteLength = VTT_LINE_TERMINATORS.byteLength + map.bytes.byteLength;
const combinedSegment = new Uint8Array(combinedByteLength);
combinedSegment.set(map.bytes);
combinedSegment.set(VTT_LINE_TERMINATORS, map.bytes.byteLength);
this.initSegments_[id] = storedMap = {
resolvedUri: map.resolvedUri,
byterange: map.byterange,
bytes: combinedSegment
};
}
return storedMap || map;
}
/**
* Returns true if all configuration required for loading is present, otherwise false.
*
* @return {boolean} True if the all configuration is ready for loading
* @private
*/
couldBeginLoading_() {
return this.playlist_ && this.subtitlesTrack_ && !this.paused();
}
/**
* Once all the starting parameters have been specified, begin
* operation. This method should only be invoked from the INIT
* state.
*
* @private
*/
init_() {
this.state = 'READY';
this.resetEverything();
return this.monitorBuffer_();
}
/**
* Set a subtitle track on the segment loader to add subtitles to
*
* @param {TextTrack=} track
* The text track to add loaded subtitles to
* @return {TextTrack}
* Returns the subtitles track
*/
track(track) {
if (typeof track === 'undefined') {
return this.subtitlesTrack_;
}
this.subtitlesTrack_ = track; // if we were unpaused but waiting for a sourceUpdater, start
// buffering now
if (this.state === 'INIT' && this.couldBeginLoading_()) {
this.init_();
}
return this.subtitlesTrack_;
}
/**
* Remove any data in the source buffer between start and end times
*
* @param {number} start - the start time of the region to remove from the buffer
* @param {number} end - the end time of the region to remove from the buffer
*/
remove(start, end) {
removeCuesFromTrack(start, end, this.subtitlesTrack_);
}
/**
* fill the buffer with segements unless the sourceBuffers are
* currently updating
*
* Note: this function should only ever be called by monitorBuffer_
* and never directly
*
* @private
*/
fillBuffer_() {
// see if we need to begin loading immediately
const segmentInfo = this.chooseNextRequest_();
if (!segmentInfo) {
return;
}
if (this.syncController_.timestampOffsetForTimeline(segmentInfo.timeline) === null) {
// We don't have the timestamp offset that we need to sync subtitles.
// Rerun on a timestamp offset or user interaction.
const checkTimestampOffset = () => {
this.state = 'READY';
if (!this.paused()) {
// if not paused, queue a buffer check as soon as possible
this.monitorBuffer_();
}
};
this.syncController_.one('timestampoffset', checkTimestampOffset);
this.state = 'WAITING_ON_TIMELINE';
return;
}
this.loadSegment_(segmentInfo);
} // never set a timestamp offset for vtt segments.
timestampOffsetForSegment_() {
return null;
}
chooseNextRequest_() {
return this.skipEmptySegments_(super.chooseNextRequest_());
}
/**
* Prevents the segment loader from requesting segments we know contain no subtitles
* by walking forward until we find the next segment that we don't know whether it is
* empty or not.
*
* @param {Object} segmentInfo
* a segment info object that describes the current segment
* @return {Object}
* a segment info object that describes the current segment
*/
skipEmptySegments_(segmentInfo) {
while (segmentInfo && segmentInfo.segment.empty) {
// stop at the last possible segmentInfo
if (segmentInfo.mediaIndex + 1 >= segmentInfo.playlist.segments.length) {
segmentInfo = null;
break;
}
segmentInfo = this.generateSegmentInfo_({
playlist: segmentInfo.playlist,
mediaIndex: segmentInfo.mediaIndex + 1,
startOfSegment: segmentInfo.startOfSegment + segmentInfo.duration,
isSyncRequest: segmentInfo.isSyncRequest
});
}
return segmentInfo;
}
stopForError(error) {
this.error(error);
this.state = 'READY';
this.pause();
this.trigger('error');
}
/**
* append a decrypted segement to the SourceBuffer through a SourceUpdater
*
* @private
*/
segmentRequestFinished_(error, simpleSegment, result) {
if (!this.subtitlesTrack_) {
this.state = 'READY';
return;
}
this.saveTransferStats_(simpleSegment.stats); // the request was aborted
if (!this.pendingSegment_) {
this.state = 'READY';
this.mediaRequestsAborted += 1;
return;
}
if (error) {
if (error.code === REQUEST_ERRORS.TIMEOUT) {
this.handleTimeout_();
}
if (error.code === REQUEST_ERRORS.ABORTED) {
this.mediaRequestsAborted += 1;
} else {
this.mediaRequestsErrored += 1;
}
this.stopForError(error);
return;
}
const segmentInfo = this.pendingSegment_; // although the VTT segment loader bandwidth isn't really used, it's good to
// maintain functionality between segment loaders
this.saveBandwidthRelatedStats_(segmentInfo.duration, simpleSegment.stats); // if this request included a segment key, save that data in the cache
if (simpleSegment.key) {
this.segmentKey(simpleSegment.key, true);
}
this.state = 'APPENDING'; // used for tests
this.trigger('appending');
const segment = segmentInfo.segment;
if (segment.map) {
segment.map.bytes = simpleSegment.map.bytes;
}
segmentInfo.bytes = simpleSegment.bytes; // Make sure that vttjs has loaded, otherwise, load it and wait till it finished loading
if (typeof window.WebVTT !== 'function' && typeof this.loadVttJs === 'function') {
this.state = 'WAITING_ON_VTTJS'; // should be fine to call multiple times
// script will be loaded once but multiple listeners will be added to the queue, which is expected.
this.loadVttJs().then(() => this.segmentRequestFinished_(error, simpleSegment, result), () => this.stopForError({
message: 'Error loading vtt.js'
}));
return;
}
segment.requested = true;
try {
this.parseVTTCues_(segmentInfo);
} catch (e) {
this.stopForError({
message: e.message,
metadata: {
errorType: videojs.Error.StreamingVttParserError,
error: e
}
});
return;
}
this.updateTimeMapping_(segmentInfo, this.syncController_.timelines[segmentInfo.timeline], this.playlist_);
if (segmentInfo.cues.length) {
segmentInfo.timingInfo = {
start: segmentInfo.cues[0].startTime,
end: segmentInfo.cues[segmentInfo.cues.length - 1].endTime
};
} else {
segmentInfo.timingInfo = {
start: segmentInfo.startOfSegment,
end: segmentInfo.startOfSegment + segmentInfo.duration
};
}
if (segmentInfo.isSyncRequest) {
this.trigger('syncinfoupdate');
this.pendingSegment_ = null;
this.state = 'READY';
return;
}
segmentInfo.byteLength = segmentInfo.bytes.byteLength;
this.mediaSecondsLoaded += segment.duration; // Create VTTCue instances for each cue in the new segment and add them to
// the subtitle track
segmentInfo.cues.forEach(cue => {
this.subtitlesTrack_.addCue(this.featuresNativeTextTracks_ ? new window.VTTCue(cue.startTime, cue.endTime, cue.text) : cue);
}); // Remove any duplicate cues from the subtitle track. The WebVTT spec allows
// cues to have identical time-intervals, but if the text is also identical
// we can safely assume it is a duplicate that can be removed (ex. when a cue
// "overlaps" VTT segments)
removeDuplicateCuesFromTrack(this.subtitlesTrack_);
this.handleAppendsDone_();
}
handleData_() {// noop as we shouldn't be getting video/audio data captions
// that we do not support here.
}
updateTimingInfoEnd_() {// noop
}
/**
* Uses the WebVTT parser to parse the segment response
*
* @throws NoVttJsError
*
* @param {Object} segmentInfo
* a segment info object that describes the current segment
* @private
*/
parseVTTCues_(segmentInfo) {
let decoder;
let decodeBytesToString = false;
if (typeof window.WebVTT !== 'function') {
// caller is responsible for exception handling.
throw new NoVttJsError();
}
if (typeof window.TextDecoder === 'function') {
decoder = new window.TextDecoder('utf8');
} else {
decoder = window.WebVTT.StringDecoder();
decodeBytesToString = true;
}
const parser = new window.WebVTT.Parser(window, window.vttjs, decoder);
segmentInfo.cues = [];
segmentInfo.timestampmap = {
MPEGTS: 0,
LOCAL: 0
};
parser.oncue = segmentInfo.cues.push.bind(segmentInfo.cues);
parser.ontimestampmap = map => {
segmentInfo.timestampmap = map;
};
parser.onparsingerror = error => {
videojs.log.warn('Error encountered when parsing cues: ' + error.message);
};
if (segmentInfo.segment.map) {
let mapData = segmentInfo.segment.map.bytes;
if (decodeBytesToString) {
mapData = uint8ToUtf8(mapData);
}
parser.parse(mapData);
}
let segmentData = segmentInfo.bytes;
if (decodeBytesToString) {
segmentData = uint8ToUtf8(segmentData);
}
parser.parse(segmentData);
parser.flush();
}
/**
* Updates the start and end times of any cues parsed by the WebVTT parser using
* the information parsed from the X-TIMESTAMP-MAP header and a TS to media time mapping
* from the SyncController
*
* @param {Object} segmentInfo
* a segment info object that describes the current segment
* @param {Object} mappingObj
* object containing a mapping from TS to media time
* @param {Object} playlist
* the playlist object containing the segment
* @private
*/
updateTimeMapping_(segmentInfo, mappingObj, playlist) {
const segment = segmentInfo.segment;
if (!mappingObj) {
// If the sync controller does not have a mapping of TS to Media Time for the
// timeline, then we don't have enough information to update the cue
// start/end times
return;
}
if (!segmentInfo.cues.length) {
// If there are no cues, we also do not have enough information to figure out
// segment timing. Mark that the segment contains no cues so we don't re-request
// an empty segment.
segment.empty = true;
return;
}
const {
MPEGTS,
LOCAL
} = segmentInfo.timestampmap;
/**
* From the spec:
* The MPEGTS media timestamp MUST use a 90KHz timescale,
* even when non-WebVTT Media Segments use a different timescale.
*/
const mpegTsInSeconds = MPEGTS / clock_1;
const diff = mpegTsInSeconds - LOCAL + mappingObj.mapping;
segmentInfo.cues.forEach(cue => {
const duration = cue.endTime - cue.startTime;
const startTime = MPEGTS === 0 ? cue.startTime + diff : this.handleRollover_(cue.startTime + diff, mappingObj.time);
cue.startTime = Math.max(startTime, 0);
cue.endTime = Math.max(startTime + duration, 0);
});
if (!playlist.syncInfo) {
const firstStart = segmentInfo.cues[0].startTime;
const lastStart = segmentInfo.cues[segmentInfo.cues.length - 1].startTime;
playlist.syncInfo = {
mediaSequence: playlist.mediaSequence + segmentInfo.mediaIndex,
time: Math.min(firstStart, lastStart - segment.duration)
};
}
}
/**
* MPEG-TS PES timestamps are limited to 2^33.
* Once they reach 2^33, they roll over to 0.
* mux.js handles PES timestamp rollover for the following scenarios:
* [forward rollover(right)] ->
* PES timestamps monotonically increase, and once they reach 2^33, they roll over to 0
* [backward rollover(left)] -->
* we seek back to position before rollover.
*
* According to the HLS SPEC:
* When synchronizing WebVTT with PES timestamps, clients SHOULD account
* for cases where the 33-bit PES timestamps have wrapped and the WebVTT
* cue times have not. When the PES timestamp wraps, the WebVTT Segment
* SHOULD have a X-TIMESTAMP-MAP header that maps the current WebVTT
* time to the new (low valued) PES timestamp.
*
* So we want to handle rollover here and align VTT Cue start/end time to the player's time.
*/
handleRollover_(value, reference) {
if (reference === null) {
return value;
}
let valueIn90khz = value * clock_1;
const referenceIn90khz = reference * clock_1;
let offset;
if (referenceIn90khz < valueIn90khz) {
// - 2^33
offset = -8589934592;
} else {
// + 2^33
offset = 8589934592;
} // distance(value - reference) > 2^32
while (Math.abs(valueIn90khz - referenceIn90khz) > 4294967296) {
valueIn90khz += offset;
}
return valueIn90khz / clock_1;
}
}
/**
* @file ad-cue-tags.js
*/
/**
* Searches for an ad cue that overlaps with the given mediaTime
*
* @param {Object} track
* the track to find the cue for
*
* @param {number} mediaTime
* the time to find the cue at
*
* @return {Object|null}
* the found cue or null
*/
const findAdCue = function (track, mediaTime) {
const cues = track.cues;
for (let i = 0; i < cues.length; i++) {
const cue = cues[i];
if (mediaTime >= cue.adStartTime && mediaTime <= cue.adEndTime) {
return cue;
}
}
return null;
};
const updateAdCues = function (media, track, offset = 0) {
if (!media.segments) {
return;
}
let mediaTime = offset;
let cue;
for (let i = 0; i < media.segments.length; i++) {
const segment = media.segments[i];
if (!cue) {
// Since the cues will span for at least the segment duration, adding a fudge
// factor of half segment duration will prevent duplicate cues from being
// created when timing info is not exact (e.g. cue start time initialized
// at 10.006677, but next call mediaTime is 10.003332 )
cue = findAdCue(track, mediaTime + segment.duration / 2);
}
if (cue) {
if ('cueIn' in segment) {
// Found a CUE-IN so end the cue
cue.endTime = mediaTime;
cue.adEndTime = mediaTime;
mediaTime += segment.duration;
cue = null;
continue;
}
if (mediaTime < cue.endTime) {
// Already processed this mediaTime for this cue
mediaTime += segment.duration;
continue;
} // otherwise extend cue until a CUE-IN is found
cue.endTime += segment.duration;
} else {
if ('cueOut' in segment) {
cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, segment.cueOut);
cue.adStartTime = mediaTime; // Assumes tag format to be
// #EXT-X-CUE-OUT:30
cue.adEndTime = mediaTime + parseFloat(segment.cueOut);
track.addCue(cue);
}
if ('cueOutCont' in segment) {
// Entered into the middle of an ad cue
// Assumes tag formate to be
// #EXT-X-CUE-OUT-CONT:10/30
const [adOffset, adTotal] = segment.cueOutCont.split('/').map(parseFloat);
cue = new window.VTTCue(mediaTime, mediaTime + segment.duration, '');
cue.adStartTime = mediaTime - adOffset;
cue.adEndTime = cue.adStartTime + adTotal;
track.addCue(cue);
}
}
mediaTime += segment.duration;
}
};
class SyncInfo {
/**
* @param {number} start - media sequence start
* @param {number} end - media sequence end
* @param {number} segmentIndex - index for associated segment
* @param {number|null} [partIndex] - index for associated part
* @param {boolean} [appended] - appended indicator
*
*/
constructor({
start,
end,
segmentIndex,
partIndex = null,
appended = false
}) {
this.start_ = start;
this.end_ = end;
this.segmentIndex_ = segmentIndex;
this.partIndex_ = partIndex;
this.appended_ = appended;
}
isInRange(targetTime) {
return targetTime >= this.start && targetTime < this.end;
}
markAppended() {
this.appended_ = true;
}
resetAppendedStatus() {
this.appended_ = false;
}
get isAppended() {
return this.appended_;
}
get start() {
return this.start_;
}
get end() {
return this.end_;
}
get segmentIndex() {
return this.segmentIndex_;
}
get partIndex() {
return this.partIndex_;
}
}
class SyncInfoData {
/**
*
* @param {SyncInfo} segmentSyncInfo - sync info for a given segment
* @param {Array} [partsSyncInfo] - sync infos for a list of parts for a given segment
*/
constructor(segmentSyncInfo, partsSyncInfo = []) {
this.segmentSyncInfo_ = segmentSyncInfo;
this.partsSyncInfo_ = partsSyncInfo;
}
get segmentSyncInfo() {
return this.segmentSyncInfo_;
}
get partsSyncInfo() {
return this.partsSyncInfo_;
}
get hasPartsSyncInfo() {
return this.partsSyncInfo_.length > 0;
}
resetAppendStatus() {
this.segmentSyncInfo_.resetAppendedStatus();
this.partsSyncInfo_.forEach(partSyncInfo => partSyncInfo.resetAppendedStatus());
}
}
class MediaSequenceSync {
constructor() {
/**
* @type {Map}
* @protected
*/
this.storage_ = new Map();
this.diagnostics_ = '';
this.isReliable_ = false;
this.start_ = -Infinity;
this.end_ = Infinity;
}
get start() {
return this.start_;
}
get end() {
return this.end_;
}
get diagnostics() {
return this.diagnostics_;
}
get isReliable() {
return this.isReliable_;
}
resetAppendedStatus() {
this.storage_.forEach(syncInfoData => syncInfoData.resetAppendStatus());
}
/**
* update sync storage
*
* @param {Object} playlist
* @param {number} currentTime
*
* @return {void}
*/
update(playlist, currentTime) {
const {
mediaSequence,
segments
} = playlist;
this.isReliable_ = this.isReliablePlaylist_(mediaSequence, segments);
if (!this.isReliable_) {
return;
}
return this.updateStorage_(segments, mediaSequence, this.calculateBaseTime_(mediaSequence, currentTime));
}
/**
* @param {number} targetTime
* @return {SyncInfo|null}
*/
getSyncInfoForTime(targetTime) {
for (const {
segmentSyncInfo,
partsSyncInfo
} of this.storage_.values()) {
// Normal segment flow:
if (!partsSyncInfo.length) {
if (segmentSyncInfo.isInRange(targetTime)) {
return segmentSyncInfo;
}
} else {
// Low latency flow:
for (const partSyncInfo of partsSyncInfo) {
if (partSyncInfo.isInRange(targetTime)) {
return partSyncInfo;
}
}
}
}
return null;
}
getSyncInfoForMediaSequence(mediaSequence) {
return this.storage_.get(mediaSequence);
}
updateStorage_(segments, startingMediaSequence, startingTime) {
const newStorage = new Map();
let newDiagnostics = '\n';
let currentStart = startingTime;
let currentMediaSequence = startingMediaSequence;
this.start_ = currentStart;
segments.forEach((segment, segmentIndex) => {
const prevSyncInfoData = this.storage_.get(currentMediaSequence);
const segmentStart = currentStart;
const segmentEnd = segmentStart + segment.duration;
const segmentIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.segmentSyncInfo && prevSyncInfoData.segmentSyncInfo.isAppended);
const segmentSyncInfo = new SyncInfo({
start: segmentStart,
end: segmentEnd,
appended: segmentIsAppended,
segmentIndex
});
segment.syncInfo = segmentSyncInfo;
let currentPartStart = currentStart;
const partsSyncInfo = (segment.parts || []).map((part, partIndex) => {
const partStart = currentPartStart;
const partEnd = currentPartStart + part.duration;
const partIsAppended = Boolean(prevSyncInfoData && prevSyncInfoData.partsSyncInfo && prevSyncInfoData.partsSyncInfo[partIndex] && prevSyncInfoData.partsSyncInfo[partIndex].isAppended);
const partSyncInfo = new SyncInfo({
start: partStart,
end: partEnd,
appended: partIsAppended,
segmentIndex,
partIndex
});
currentPartStart = partEnd;
newDiagnostics += `Media Sequence: ${currentMediaSequence}.${partIndex} | Range: ${partStart} --> ${partEnd} | Appended: ${partIsAppended}\n`;
part.syncInfo = partSyncInfo;
return partSyncInfo;
});
newStorage.set(currentMediaSequence, new SyncInfoData(segmentSyncInfo, partsSyncInfo));
newDiagnostics += `${compactSegmentUrlDescription(segment.resolvedUri)} | Media Sequence: ${currentMediaSequence} | Range: ${segmentStart} --> ${segmentEnd} | Appended: ${segmentIsAppended}\n`;
currentMediaSequence++;
currentStart = segmentEnd;
});
this.end_ = currentStart;
this.storage_ = newStorage;
this.diagnostics_ = newDiagnostics;
}
calculateBaseTime_(mediaSequence, fallback) {
if (!this.storage_.size) {
// Initial setup flow.
return 0;
}
if (this.storage_.has(mediaSequence)) {
// Normal flow.
return this.storage_.get(mediaSequence).segmentSyncInfo.start;
} // Fallback flow.
// There is a gap between last recorded playlist and a new one received.
return fallback;
}
isReliablePlaylist_(mediaSequence, segments) {
return mediaSequence !== undefined && mediaSequence !== null && Array.isArray(segments) && segments.length;
}
}
class DependantMediaSequenceSync extends MediaSequenceSync {
constructor(parent) {
super();
this.parent_ = parent;
}
calculateBaseTime_(mediaSequence, fallback) {
if (!this.storage_.size) {
const info = this.parent_.getSyncInfoForMediaSequence(mediaSequence);
if (info) {
return info.segmentSyncInfo.start;
}
return 0;
}
return super.calculateBaseTime_(mediaSequence, fallback);
}
}
/**
* @file sync-controller.js
*/
// synchronize expired playlist segments.
// the max media sequence diff is 48 hours of live stream
// content with two second segments. Anything larger than that
// will likely be invalid.
const MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC = 86400;
const syncPointStrategies = [
// Stategy "VOD": Handle the VOD-case where the sync-point is *always*
// the equivalence display-time 0 === segment-index 0
{
name: 'VOD',
run: (syncController, playlist, duration, currentTimeline, currentTime) => {
if (duration !== Infinity) {
const syncPoint = {
time: 0,
segmentIndex: 0,
partIndex: null
};
return syncPoint;
}
return null;
}
}, {
name: 'MediaSequence',
/**
* run media sequence strategy
*
* @param {SyncController} syncController
* @param {Object} playlist
* @param {number} duration
* @param {number} currentTimeline
* @param {number} currentTime
* @param {string} type
*/
run: (syncController, playlist, duration, currentTimeline, currentTime, type) => {
const mediaSequenceSync = syncController.getMediaSequenceSync(type);
if (!mediaSequenceSync) {
return null;
}
if (!mediaSequenceSync.isReliable) {
return null;
}
const syncInfo = mediaSequenceSync.getSyncInfoForTime(currentTime);
if (!syncInfo) {
return null;
}
return {
time: syncInfo.start,
partIndex: syncInfo.partIndex,
segmentIndex: syncInfo.segmentIndex
};
}
},
// Stategy "ProgramDateTime": We have a program-date-time tag in this playlist
{
name: 'ProgramDateTime',
run: (syncController, playlist, duration, currentTimeline, currentTime) => {
if (!Object.keys(syncController.timelineToDatetimeMappings).length) {
return null;
}
let syncPoint = null;
let lastDistance = null;
const partsAndSegments = getPartsAndSegments(playlist);
currentTime = currentTime || 0;
for (let i = 0; i < partsAndSegments.length; i++) {
// start from the end and loop backwards for live
// or start from the front and loop forwards for non-live
const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
const partAndSegment = partsAndSegments[index];
const segment = partAndSegment.segment;
const datetimeMapping = syncController.timelineToDatetimeMappings[segment.timeline];
if (!datetimeMapping || !segment.dateTimeObject) {
continue;
}
const segmentTime = segment.dateTimeObject.getTime() / 1000;
let start = segmentTime + datetimeMapping; // take part duration into account.
if (segment.parts && typeof partAndSegment.partIndex === 'number') {
for (let z = 0; z < partAndSegment.partIndex; z++) {
start += segment.parts[z].duration;
}
}
const distance = Math.abs(currentTime - start); // Once the distance begins to increase, or if distance is 0, we have passed
// currentTime and can stop looking for better candidates
if (lastDistance !== null && (distance === 0 || lastDistance < distance)) {
break;
}
lastDistance = distance;
syncPoint = {
time: start,
segmentIndex: partAndSegment.segmentIndex,
partIndex: partAndSegment.partIndex
};
}
return syncPoint;
}
},
// Stategy "Segment": We have a known time mapping for a timeline and a
// segment in the current timeline with timing data
{
name: 'Segment',
run: (syncController, playlist, duration, currentTimeline, currentTime) => {
let syncPoint = null;
let lastDistance = null;
currentTime = currentTime || 0;
const partsAndSegments = getPartsAndSegments(playlist);
for (let i = 0; i < partsAndSegments.length; i++) {
// start from the end and loop backwards for live
// or start from the front and loop forwards for non-live
const index = playlist.endList || currentTime === 0 ? i : partsAndSegments.length - (i + 1);
const partAndSegment = partsAndSegments[index];
const segment = partAndSegment.segment;
const start = partAndSegment.part && partAndSegment.part.start || segment && segment.start;
if (segment.timeline === currentTimeline && typeof start !== 'undefined') {
const distance = Math.abs(currentTime - start); // Once the distance begins to increase, we have passed
// currentTime and can stop looking for better candidates
if (lastDistance !== null && lastDistance < distance) {
break;
}
if (!syncPoint || lastDistance === null || lastDistance >= distance) {
lastDistance = distance;
syncPoint = {
time: start,
segmentIndex: partAndSegment.segmentIndex,
partIndex: partAndSegment.partIndex
};
}
}
}
return syncPoint;
}
},
// Stategy "Discontinuity": We have a discontinuity with a known
// display-time
{
name: 'Discontinuity',
run: (syncController, playlist, duration, currentTimeline, currentTime) => {
let syncPoint = null;
currentTime = currentTime || 0;
if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
let lastDistance = null;
for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
const segmentIndex = playlist.discontinuityStarts[i];
const discontinuity = playlist.discontinuitySequence + i + 1;
const discontinuitySync = syncController.discontinuities[discontinuity];
if (discontinuitySync) {
const distance = Math.abs(currentTime - discontinuitySync.time); // Once the distance begins to increase, we have passed
// currentTime and can stop looking for better candidates
if (lastDistance !== null && lastDistance < distance) {
break;
}
if (!syncPoint || lastDistance === null || lastDistance >= distance) {
lastDistance = distance;
syncPoint = {
time: discontinuitySync.time,
segmentIndex,
partIndex: null
};
}
}
}
}
return syncPoint;
}
},
// Stategy "Playlist": We have a playlist with a known mapping of
// segment index to display time
{
name: 'Playlist',
run: (syncController, playlist, duration, currentTimeline, currentTime) => {
if (playlist.syncInfo) {
const syncPoint = {
time: playlist.syncInfo.time,
segmentIndex: playlist.syncInfo.mediaSequence - playlist.mediaSequence,
partIndex: null
};
return syncPoint;
}
return null;
}
}];
class SyncController extends videojs.EventTarget {
constructor(options = {}) {
super(); // ...for synching across variants
this.timelines = [];
this.discontinuities = [];
this.timelineToDatetimeMappings = {}; // TODO: this map should be only available for HLS. Since only HLS has MediaSequence.
// For some reason this map helps with syncing between quality switch for MPEG-DASH as well.
// Moreover if we disable this map for MPEG-DASH - quality switch will be broken.
// MPEG-DASH should have its own separate sync strategy
const main = new MediaSequenceSync();
const audio = new DependantMediaSequenceSync(main);
const vtt = new DependantMediaSequenceSync(main);
this.mediaSequenceStorage_ = {
main,
audio,
vtt
};
this.logger_ = logger('SyncController');
}
/**
*
* @param {string} loaderType
* @return {MediaSequenceSync|null}
*/
getMediaSequenceSync(loaderType) {
return this.mediaSequenceStorage_[loaderType] || null;
}
/**
* Find a sync-point for the playlist specified
*
* A sync-point is defined as a known mapping from display-time to
* a segment-index in the current playlist.
*
* @param {Playlist} playlist
* The playlist that needs a sync-point
* @param {number} duration
* Duration of the MediaSource (Infinite if playing a live source)
* @param {number} currentTimeline
* The last timeline from which a segment was loaded
* @param {number} currentTime
* Current player's time
* @param {string} type
* Segment loader type
* @return {Object}
* A sync-point object
*/
getSyncPoint(playlist, duration, currentTimeline, currentTime, type) {
// Always use VOD sync point for VOD
if (duration !== Infinity) {
const vodSyncPointStrategy = syncPointStrategies.find(({
name
}) => name === 'VOD');
return vodSyncPointStrategy.run(this, playlist, duration);
}
const syncPoints = this.runStrategies_(playlist, duration, currentTimeline, currentTime, type);
if (!syncPoints.length) {
// Signal that we need to attempt to get a sync-point manually
// by fetching a segment in the playlist and constructing
// a sync-point from that information
return null;
} // If we have exact match just return it instead of finding the nearest distance
for (const syncPointInfo of syncPoints) {
const {
syncPoint,
strategy
} = syncPointInfo;
const {
segmentIndex,
time
} = syncPoint;
if (segmentIndex < 0) {
continue;
}
const selectedSegment = playlist.segments[segmentIndex];
const start = time;
const end = start + selectedSegment.duration;
this.logger_(`Strategy: ${strategy}. Current time: ${currentTime}. selected segment: ${segmentIndex}. Time: [${start} -> ${end}]}`);
if (currentTime >= start && currentTime < end) {
this.logger_('Found sync point with exact match: ', syncPoint);
return syncPoint;
}
} // Now find the sync-point that is closest to the currentTime because
// that should result in the most accurate guess about which segment
// to fetch
return this.selectSyncPoint_(syncPoints, {
key: 'time',
value: currentTime
});
}
/**
* Calculate the amount of time that has expired off the playlist during playback
*
* @param {Playlist} playlist
* Playlist object to calculate expired from
* @param {number} duration
* Duration of the MediaSource (Infinity if playling a live source)
* @return {number|null}
* The amount of time that has expired off the playlist during playback. Null
* if no sync-points for the playlist can be found.
*/
getExpiredTime(playlist, duration) {
if (!playlist || !playlist.segments) {
return null;
}
const syncPoints = this.runStrategies_(playlist, duration, playlist.discontinuitySequence, 0); // Without sync-points, there is not enough information to determine the expired time
if (!syncPoints.length) {
return null;
}
const syncPoint = this.selectSyncPoint_(syncPoints, {
key: 'segmentIndex',
value: 0
}); // If the sync-point is beyond the start of the playlist, we want to subtract the
// duration from index 0 to syncPoint.segmentIndex instead of adding.
if (syncPoint.segmentIndex > 0) {
syncPoint.time *= -1;
}
return Math.abs(syncPoint.time + sumDurations({
defaultDuration: playlist.targetDuration,
durationList: playlist.segments,
startIndex: syncPoint.segmentIndex,
endIndex: 0
}));
}
/**
* Runs each sync-point strategy and returns a list of sync-points returned by the
* strategies
*
* @private
* @param {Playlist} playlist
* The playlist that needs a sync-point
* @param {number} duration
* Duration of the MediaSource (Infinity if playing a live source)
* @param {number} currentTimeline
* The last timeline from which a segment was loaded
* @param {number} currentTime
* Current player's time
* @param {string} type
* Segment loader type
* @return {Array}
* A list of sync-point objects
*/
runStrategies_(playlist, duration, currentTimeline, currentTime, type) {
const syncPoints = []; // Try to find a sync-point in by utilizing various strategies...
for (let i = 0; i < syncPointStrategies.length; i++) {
const strategy = syncPointStrategies[i];
const syncPoint = strategy.run(this, playlist, duration, currentTimeline, currentTime, type);
if (syncPoint) {
syncPoint.strategy = strategy.name;
syncPoints.push({
strategy: strategy.name,
syncPoint
});
}
}
return syncPoints;
}
/**
* Selects the sync-point nearest the specified target
*
* @private
* @param {Array} syncPoints
* List of sync-points to select from
* @param {Object} target
* Object specifying the property and value we are targeting
* @param {string} target.key
* Specifies the property to target. Must be either 'time' or 'segmentIndex'
* @param {number} target.value
* The value to target for the specified key.
* @return {Object}
* The sync-point nearest the target
*/
selectSyncPoint_(syncPoints, target) {
let bestSyncPoint = syncPoints[0].syncPoint;
let bestDistance = Math.abs(syncPoints[0].syncPoint[target.key] - target.value);
let bestStrategy = syncPoints[0].strategy;
for (let i = 1; i < syncPoints.length; i++) {
const newDistance = Math.abs(syncPoints[i].syncPoint[target.key] - target.value);
if (newDistance < bestDistance) {
bestDistance = newDistance;
bestSyncPoint = syncPoints[i].syncPoint;
bestStrategy = syncPoints[i].strategy;
}
}
this.logger_(`syncPoint for [${target.key}: ${target.value}] chosen with strategy` + ` [${bestStrategy}]: [time:${bestSyncPoint.time},` + ` segmentIndex:${bestSyncPoint.segmentIndex}` + (typeof bestSyncPoint.partIndex === 'number' ? `,partIndex:${bestSyncPoint.partIndex}` : '') + ']');
return bestSyncPoint;
}
/**
* Save any meta-data present on the segments when segments leave
* the live window to the playlist to allow for synchronization at the
* playlist level later.
*
* @param {Playlist} oldPlaylist - The previous active playlist
* @param {Playlist} newPlaylist - The updated and most current playlist
*/
saveExpiredSegmentInfo(oldPlaylist, newPlaylist) {
const mediaSequenceDiff = newPlaylist.mediaSequence - oldPlaylist.mediaSequence; // Ignore large media sequence gaps
if (mediaSequenceDiff > MAX_MEDIA_SEQUENCE_DIFF_FOR_SYNC) {
videojs.log.warn(`Not saving expired segment info. Media sequence gap ${mediaSequenceDiff} is too large.`);
return;
} // When a segment expires from the playlist and it has a start time
// save that information as a possible sync-point reference in future
for (let i = mediaSequenceDiff - 1; i >= 0; i--) {
const lastRemovedSegment = oldPlaylist.segments[i];
if (lastRemovedSegment && typeof lastRemovedSegment.start !== 'undefined') {
newPlaylist.syncInfo = {
mediaSequence: oldPlaylist.mediaSequence + i,
time: lastRemovedSegment.start
};
this.logger_(`playlist refresh sync: [time:${newPlaylist.syncInfo.time},` + ` mediaSequence: ${newPlaylist.syncInfo.mediaSequence}]`);
this.trigger('syncinfoupdate');
break;
}
}
}
/**
* Save the mapping from playlist's ProgramDateTime to display. This should only happen
* before segments start to load.
*
* @param {Playlist} playlist - The currently active playlist
*/
setDateTimeMappingForStart(playlist) {
// It's possible for the playlist to be updated before playback starts, meaning time
// zero is not yet set. If, during these playlist refreshes, a discontinuity is
// crossed, then the old time zero mapping (for the prior timeline) would be retained
// unless the mappings are cleared.
this.timelineToDatetimeMappings = {};
if (playlist.segments && playlist.segments.length && playlist.segments[0].dateTimeObject) {
const firstSegment = playlist.segments[0];
const playlistTimestamp = firstSegment.dateTimeObject.getTime() / 1000;
this.timelineToDatetimeMappings[firstSegment.timeline] = -playlistTimestamp;
}
}
/**
* Calculates and saves timeline mappings, playlist sync info, and segment timing values
* based on the latest timing information.
*
* @param {Object} options
* Options object
* @param {SegmentInfo} options.segmentInfo
* The current active request information
* @param {boolean} options.shouldSaveTimelineMapping
* If there's a timeline change, determines if the timeline mapping should be
* saved for timeline mapping and program date time mappings.
*/
saveSegmentTimingInfo({
segmentInfo,
shouldSaveTimelineMapping
}) {
const didCalculateSegmentTimeMapping = this.calculateSegmentTimeMapping_(segmentInfo, segmentInfo.timingInfo, shouldSaveTimelineMapping);
const segment = segmentInfo.segment;
if (didCalculateSegmentTimeMapping) {
this.saveDiscontinuitySyncInfo_(segmentInfo); // If the playlist does not have sync information yet, record that information
// now with segment timing information
if (!segmentInfo.playlist.syncInfo) {
segmentInfo.playlist.syncInfo = {
mediaSequence: segmentInfo.playlist.mediaSequence + segmentInfo.mediaIndex,
time: segment.start
};
}
}
const dateTime = segment.dateTimeObject;
if (segment.discontinuity && shouldSaveTimelineMapping && dateTime) {
this.timelineToDatetimeMappings[segment.timeline] = -(dateTime.getTime() / 1000);
}
}
timestampOffsetForTimeline(timeline) {
if (typeof this.timelines[timeline] === 'undefined') {
return null;
}
return this.timelines[timeline].time;
}
mappingForTimeline(timeline) {
if (typeof this.timelines[timeline] === 'undefined') {
return null;
}
return this.timelines[timeline].mapping;
}
/**
* Use the "media time" for a segment to generate a mapping to "display time" and
* save that display time to the segment.
*
* @private
* @param {SegmentInfo} segmentInfo
* The current active request information
* @param {Object} timingInfo
* The start and end time of the current segment in "media time"
* @param {boolean} shouldSaveTimelineMapping
* If there's a timeline change, determines if the timeline mapping should be
* saved in timelines.
* @return {boolean}
* Returns false if segment time mapping could not be calculated
*/
calculateSegmentTimeMapping_(segmentInfo, timingInfo, shouldSaveTimelineMapping) {
// TODO: remove side effects
const segment = segmentInfo.segment;
const part = segmentInfo.part;
let mappingObj = this.timelines[segmentInfo.timeline];
let start;
let end;
if (typeof segmentInfo.timestampOffset === 'number') {
mappingObj = {
time: segmentInfo.startOfSegment,
mapping: segmentInfo.startOfSegment - timingInfo.start
};
if (shouldSaveTimelineMapping) {
this.timelines[segmentInfo.timeline] = mappingObj;
this.trigger('timestampoffset');
this.logger_(`time mapping for timeline ${segmentInfo.timeline}: ` + `[time: ${mappingObj.time}] [mapping: ${mappingObj.mapping}]`);
}
start = segmentInfo.startOfSegment;
end = timingInfo.end + mappingObj.mapping;
} else if (mappingObj) {
start = timingInfo.start + mappingObj.mapping;
end = timingInfo.end + mappingObj.mapping;
} else {
return false;
}
if (part) {
part.start = start;
part.end = end;
} // If we don't have a segment start yet or the start value we got
// is less than our current segment.start value, save a new start value.
// We have to do this because parts will have segment timing info saved
// multiple times and we want segment start to be the earliest part start
// value for that segment.
if (!segment.start || start < segment.start) {
segment.start = start;
}
segment.end = end;
return true;
}
/**
* Each time we have discontinuity in the playlist, attempt to calculate the location
* in display of the start of the discontinuity and save that. We also save an accuracy
* value so that we save values with the most accuracy (closest to 0.)
*
* @private
* @param {SegmentInfo} segmentInfo - The current active request information
*/
saveDiscontinuitySyncInfo_(segmentInfo) {
const playlist = segmentInfo.playlist;
const segment = segmentInfo.segment; // If the current segment is a discontinuity then we know exactly where
// the start of the range and it's accuracy is 0 (greater accuracy values
// mean more approximation)
if (segment.discontinuity) {
this.discontinuities[segment.timeline] = {
time: segment.start,
accuracy: 0
};
} else if (playlist.discontinuityStarts && playlist.discontinuityStarts.length) {
// Search for future discontinuities that we can provide better timing
// information for and save that information for sync purposes
for (let i = 0; i < playlist.discontinuityStarts.length; i++) {
const segmentIndex = playlist.discontinuityStarts[i];
const discontinuity = playlist.discontinuitySequence + i + 1;
const mediaIndexDiff = segmentIndex - segmentInfo.mediaIndex;
const accuracy = Math.abs(mediaIndexDiff);
if (!this.discontinuities[discontinuity] || this.discontinuities[discontinuity].accuracy > accuracy) {
let time;
if (mediaIndexDiff < 0) {
time = segment.start - sumDurations({
defaultDuration: playlist.targetDuration,
durationList: playlist.segments,
startIndex: segmentInfo.mediaIndex,
endIndex: segmentIndex
});
} else {
time = segment.end + sumDurations({
defaultDuration: playlist.targetDuration,
durationList: playlist.segments,
startIndex: segmentInfo.mediaIndex + 1,
endIndex: segmentIndex
});
}
this.discontinuities[discontinuity] = {
time,
accuracy
};
}
}
}
}
dispose() {
this.trigger('dispose');
this.off();
}
}
/**
* The TimelineChangeController acts as a source for segment loaders to listen for and
* keep track of latest and pending timeline changes. This is useful to ensure proper
* sync, as each loader may need to make a consideration for what timeline the other
* loader is on before making changes which could impact the other loader's media.
*
* @class TimelineChangeController
* @extends videojs.EventTarget
*/
class TimelineChangeController extends videojs.EventTarget {
constructor() {
super();
this.pendingTimelineChanges_ = {};
this.lastTimelineChanges_ = {};
}
clearPendingTimelineChange(type) {
this.pendingTimelineChanges_[type] = null;
this.trigger('pendingtimelinechange');
}
pendingTimelineChange({
type,
from,
to
}) {
if (typeof from === 'number' && typeof to === 'number') {
this.pendingTimelineChanges_[type] = {
type,
from,
to
};
this.trigger('pendingtimelinechange');
}
return this.pendingTimelineChanges_[type];
}
lastTimelineChange({
type,
from,
to
}) {
if (typeof from === 'number' && typeof to === 'number') {
this.lastTimelineChanges_[type] = {
type,
from,
to
};
delete this.pendingTimelineChanges_[type];
const metadata = {
timelineChangeInfo: {
from,
to
}
};
this.trigger({
type: 'timelinechange',
metadata
});
}
return this.lastTimelineChanges_[type];
}
dispose() {
this.trigger('dispose');
this.pendingTimelineChanges_ = {};
this.lastTimelineChanges_ = {};
this.off();
}
}
/* rollup-plugin-worker-factory start for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
const workerCode = transform(getWorkerString(function () {
/**
* @file stream.js
*/
/**
* A lightweight readable stream implemention that handles event dispatching.
*
* @class Stream
*/
var Stream = /*#__PURE__*/function () {
function Stream() {
this.listeners = {};
}
/**
* Add a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener the callback to be invoked when an event of
* the specified type occurs
*/
var _proto = Stream.prototype;
_proto.on = function on(type, listener) {
if (!this.listeners[type]) {
this.listeners[type] = [];
}
this.listeners[type].push(listener);
}
/**
* Remove a listener for a specified event type.
*
* @param {string} type the event name
* @param {Function} listener a function previously registered for this
* type of event through `on`
* @return {boolean} if we could turn it off or not
*/;
_proto.off = function off(type, listener) {
if (!this.listeners[type]) {
return false;
}
var index = this.listeners[type].indexOf(listener); // TODO: which is better?
// In Video.js we slice listener functions
// on trigger so that it does not mess up the order
// while we loop through.
//
// Here we slice on off so that the loop in trigger
// can continue using it's old reference to loop without
// messing up the order.
this.listeners[type] = this.listeners[type].slice(0);
this.listeners[type].splice(index, 1);
return index > -1;
}
/**
* Trigger an event of the specified type on this stream. Any additional
* arguments to this function are passed as parameters to event listeners.
*
* @param {string} type the event name
*/;
_proto.trigger = function trigger(type) {
var callbacks = this.listeners[type];
if (!callbacks) {
return;
} // Slicing the arguments on every invocation of this method
// can add a significant amount of overhead. Avoid the
// intermediate object creation for the common case of a
// single callback argument
if (arguments.length === 2) {
var length = callbacks.length;
for (var i = 0; i < length; ++i) {
callbacks[i].call(this, arguments[1]);
}
} else {
var args = Array.prototype.slice.call(arguments, 1);
var _length = callbacks.length;
for (var _i = 0; _i < _length; ++_i) {
callbacks[_i].apply(this, args);
}
}
}
/**
* Destroys the stream and cleans up.
*/;
_proto.dispose = function dispose() {
this.listeners = {};
}
/**
* Forwards all `data` events on this stream to the destination stream. The
* destination stream should provide a method `push` to receive the data
* events as they arrive.
*
* @param {Stream} destination the stream that will receive all `data` events
* @see http://nodejs.org/api/stream.html#stream_readable_pipe_destination_options
*/;
_proto.pipe = function pipe(destination) {
this.on('data', function (data) {
destination.push(data);
});
};
return Stream;
}();
/*! @name pkcs7 @version 1.0.4 @license Apache-2.0 */
/**
* Returns the subarray of a Uint8Array without PKCS#7 padding.
*
* @param padded {Uint8Array} unencrypted bytes that have been padded
* @return {Uint8Array} the unpadded bytes
* @see http://tools.ietf.org/html/rfc5652
*/
function unpad(padded) {
return padded.subarray(0, padded.byteLength - padded[padded.byteLength - 1]);
}
/*! @name aes-decrypter @version 4.0.1 @license Apache-2.0 */
/**
* @file aes.js
*
* This file contains an adaptation of the AES decryption algorithm
* from the Standford Javascript Cryptography Library. That work is
* covered by the following copyright and permissions notice:
*
* Copyright 2009-2010 Emily Stark, Mike Hamburg, Dan Boneh.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* The views and conclusions contained in the software and documentation
* are those of the authors and should not be interpreted as representing
* official policies, either expressed or implied, of the authors.
*/
/**
* Expand the S-box tables.
*
* @private
*/
const precompute = function () {
const tables = [[[], [], [], [], []], [[], [], [], [], []]];
const encTable = tables[0];
const decTable = tables[1];
const sbox = encTable[4];
const sboxInv = decTable[4];
let i;
let x;
let xInv;
const d = [];
const th = [];
let x2;
let x4;
let x8;
let s;
let tEnc;
let tDec; // Compute double and third tables
for (i = 0; i < 256; i++) {
th[(d[i] = i << 1 ^ (i >> 7) * 283) ^ i] = i;
}
for (x = xInv = 0; !sbox[x]; x ^= x2 || 1, xInv = th[xInv] || 1) {
// Compute sbox
s = xInv ^ xInv << 1 ^ xInv << 2 ^ xInv << 3 ^ xInv << 4;
s = s >> 8 ^ s & 255 ^ 99;
sbox[x] = s;
sboxInv[s] = x; // Compute MixColumns
x8 = d[x4 = d[x2 = d[x]]];
tDec = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
tEnc = d[s] * 0x101 ^ s * 0x1010100;
for (i = 0; i < 4; i++) {
encTable[i][x] = tEnc = tEnc << 24 ^ tEnc >>> 8;
decTable[i][s] = tDec = tDec << 24 ^ tDec >>> 8;
}
} // Compactify. Considerable speedup on Firefox.
for (i = 0; i < 5; i++) {
encTable[i] = encTable[i].slice(0);
decTable[i] = decTable[i].slice(0);
}
return tables;
};
let aesTables = null;
/**
* Schedule out an AES key for both encryption and decryption. This
* is a low-level class. Use a cipher mode to do bulk encryption.
*
* @class AES
* @param key {Array} The key as an array of 4, 6 or 8 words.
*/
class AES {
constructor(key) {
/**
* The expanded S-box and inverse S-box tables. These will be computed
* on the client so that we don't have to send them down the wire.
*
* There are two tables, _tables[0] is for encryption and
* _tables[1] is for decryption.
*
* The first 4 sub-tables are the expanded S-box with MixColumns. The
* last (_tables[01][4]) is the S-box itself.
*
* @private
*/
// if we have yet to precompute the S-box tables
// do so now
if (!aesTables) {
aesTables = precompute();
} // then make a copy of that object for use
this._tables = [[aesTables[0][0].slice(), aesTables[0][1].slice(), aesTables[0][2].slice(), aesTables[0][3].slice(), aesTables[0][4].slice()], [aesTables[1][0].slice(), aesTables[1][1].slice(), aesTables[1][2].slice(), aesTables[1][3].slice(), aesTables[1][4].slice()]];
let i;
let j;
let tmp;
const sbox = this._tables[0][4];
const decTable = this._tables[1];
const keyLen = key.length;
let rcon = 1;
if (keyLen !== 4 && keyLen !== 6 && keyLen !== 8) {
throw new Error('Invalid aes key size');
}
const encKey = key.slice(0);
const decKey = [];
this._key = [encKey, decKey]; // schedule encryption keys
for (i = keyLen; i < 4 * keyLen + 28; i++) {
tmp = encKey[i - 1]; // apply sbox
if (i % keyLen === 0 || keyLen === 8 && i % keyLen === 4) {
tmp = sbox[tmp >>> 24] << 24 ^ sbox[tmp >> 16 & 255] << 16 ^ sbox[tmp >> 8 & 255] << 8 ^ sbox[tmp & 255]; // shift rows and add rcon
if (i % keyLen === 0) {
tmp = tmp << 8 ^ tmp >>> 24 ^ rcon << 24;
rcon = rcon << 1 ^ (rcon >> 7) * 283;
}
}
encKey[i] = encKey[i - keyLen] ^ tmp;
} // schedule decryption keys
for (j = 0; i; j++, i--) {
tmp = encKey[j & 3 ? i : i - 4];
if (i <= 4 || j < 4) {
decKey[j] = tmp;
} else {
decKey[j] = decTable[0][sbox[tmp >>> 24]] ^ decTable[1][sbox[tmp >> 16 & 255]] ^ decTable[2][sbox[tmp >> 8 & 255]] ^ decTable[3][sbox[tmp & 255]];
}
}
}
/**
* Decrypt 16 bytes, specified as four 32-bit words.
*
* @param {number} encrypted0 the first word to decrypt
* @param {number} encrypted1 the second word to decrypt
* @param {number} encrypted2 the third word to decrypt
* @param {number} encrypted3 the fourth word to decrypt
* @param {Int32Array} out the array to write the decrypted words
* into
* @param {number} offset the offset into the output array to start
* writing results
* @return {Array} The plaintext.
*/
decrypt(encrypted0, encrypted1, encrypted2, encrypted3, out, offset) {
const key = this._key[1]; // state variables a,b,c,d are loaded with pre-whitened data
let a = encrypted0 ^ key[0];
let b = encrypted3 ^ key[1];
let c = encrypted2 ^ key[2];
let d = encrypted1 ^ key[3];
let a2;
let b2;
let c2; // key.length === 2 ?
const nInnerRounds = key.length / 4 - 2;
let i;
let kIndex = 4;
const table = this._tables[1]; // load up the tables
const table0 = table[0];
const table1 = table[1];
const table2 = table[2];
const table3 = table[3];
const sbox = table[4]; // Inner rounds. Cribbed from OpenSSL.
for (i = 0; i < nInnerRounds; i++) {
a2 = table0[a >>> 24] ^ table1[b >> 16 & 255] ^ table2[c >> 8 & 255] ^ table3[d & 255] ^ key[kIndex];
b2 = table0[b >>> 24] ^ table1[c >> 16 & 255] ^ table2[d >> 8 & 255] ^ table3[a & 255] ^ key[kIndex + 1];
c2 = table0[c >>> 24] ^ table1[d >> 16 & 255] ^ table2[a >> 8 & 255] ^ table3[b & 255] ^ key[kIndex + 2];
d = table0[d >>> 24] ^ table1[a >> 16 & 255] ^ table2[b >> 8 & 255] ^ table3[c & 255] ^ key[kIndex + 3];
kIndex += 4;
a = a2;
b = b2;
c = c2;
} // Last round.
for (i = 0; i < 4; i++) {
out[(3 & -i) + offset] = sbox[a >>> 24] << 24 ^ sbox[b >> 16 & 255] << 16 ^ sbox[c >> 8 & 255] << 8 ^ sbox[d & 255] ^ key[kIndex++];
a2 = a;
a = b;
b = c;
c = d;
d = a2;
}
}
}
/**
* @file async-stream.js
*/
/**
* A wrapper around the Stream class to use setTimeout
* and run stream "jobs" Asynchronously
*
* @class AsyncStream
* @extends Stream
*/
class AsyncStream extends Stream {
constructor() {
super(Stream);
this.jobs = [];
this.delay = 1;
this.timeout_ = null;
}
/**
* process an async job
*
* @private
*/
processJob_() {
this.jobs.shift()();
if (this.jobs.length) {
this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
} else {
this.timeout_ = null;
}
}
/**
* push a job into the stream
*
* @param {Function} job the job to push into the stream
*/
push(job) {
this.jobs.push(job);
if (!this.timeout_) {
this.timeout_ = setTimeout(this.processJob_.bind(this), this.delay);
}
}
}
/**
* @file decrypter.js
*
* An asynchronous implementation of AES-128 CBC decryption with
* PKCS#7 padding.
*/
/**
* Convert network-order (big-endian) bytes into their little-endian
* representation.
*/
const ntoh = function (word) {
return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;
};
/**
* Decrypt bytes using AES-128 with CBC and PKCS#7 padding.
*
* @param {Uint8Array} encrypted the encrypted bytes
* @param {Uint32Array} key the bytes of the decryption key
* @param {Uint32Array} initVector the initialization vector (IV) to
* use for the first round of CBC.
* @return {Uint8Array} the decrypted bytes
*
* @see http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
* @see http://en.wikipedia.org/wiki/Block_cipher_mode_of_operation#Cipher_Block_Chaining_.28CBC.29
* @see https://tools.ietf.org/html/rfc2315
*/
const decrypt = function (encrypted, key, initVector) {
// word-level access to the encrypted bytes
const encrypted32 = new Int32Array(encrypted.buffer, encrypted.byteOffset, encrypted.byteLength >> 2);
const decipher = new AES(Array.prototype.slice.call(key)); // byte and word-level access for the decrypted output
const decrypted = new Uint8Array(encrypted.byteLength);
const decrypted32 = new Int32Array(decrypted.buffer); // temporary variables for working with the IV, encrypted, and
// decrypted data
let init0;
let init1;
let init2;
let init3;
let encrypted0;
let encrypted1;
let encrypted2;
let encrypted3; // iteration variable
let wordIx; // pull out the words of the IV to ensure we don't modify the
// passed-in reference and easier access
init0 = initVector[0];
init1 = initVector[1];
init2 = initVector[2];
init3 = initVector[3]; // decrypt four word sequences, applying cipher-block chaining (CBC)
// to each decrypted block
for (wordIx = 0; wordIx < encrypted32.length; wordIx += 4) {
// convert big-endian (network order) words into little-endian
// (javascript order)
encrypted0 = ntoh(encrypted32[wordIx]);
encrypted1 = ntoh(encrypted32[wordIx + 1]);
encrypted2 = ntoh(encrypted32[wordIx + 2]);
encrypted3 = ntoh(encrypted32[wordIx + 3]); // decrypt the block
decipher.decrypt(encrypted0, encrypted1, encrypted2, encrypted3, decrypted32, wordIx); // XOR with the IV, and restore network byte-order to obtain the
// plaintext
decrypted32[wordIx] = ntoh(decrypted32[wordIx] ^ init0);
decrypted32[wordIx + 1] = ntoh(decrypted32[wordIx + 1] ^ init1);
decrypted32[wordIx + 2] = ntoh(decrypted32[wordIx + 2] ^ init2);
decrypted32[wordIx + 3] = ntoh(decrypted32[wordIx + 3] ^ init3); // setup the IV for the next round
init0 = encrypted0;
init1 = encrypted1;
init2 = encrypted2;
init3 = encrypted3;
}
return decrypted;
};
/**
* The `Decrypter` class that manages decryption of AES
* data through `AsyncStream` objects and the `decrypt`
* function
*
* @param {Uint8Array} encrypted the encrypted bytes
* @param {Uint32Array} key the bytes of the decryption key
* @param {Uint32Array} initVector the initialization vector (IV) to
* @param {Function} done the function to run when done
* @class Decrypter
*/
class Decrypter {
constructor(encrypted, key, initVector, done) {
const step = Decrypter.STEP;
const encrypted32 = new Int32Array(encrypted.buffer);
const decrypted = new Uint8Array(encrypted.byteLength);
let i = 0;
this.asyncStream_ = new AsyncStream(); // split up the encryption job and do the individual chunks asynchronously
this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
for (i = step; i < encrypted32.length; i += step) {
initVector = new Uint32Array([ntoh(encrypted32[i - 4]), ntoh(encrypted32[i - 3]), ntoh(encrypted32[i - 2]), ntoh(encrypted32[i - 1])]);
this.asyncStream_.push(this.decryptChunk_(encrypted32.subarray(i, i + step), key, initVector, decrypted));
} // invoke the done() callback when everything is finished
this.asyncStream_.push(function () {
// remove pkcs#7 padding from the decrypted bytes
done(null, unpad(decrypted));
});
}
/**
* a getter for step the maximum number of bytes to process at one time
*
* @return {number} the value of step 32000
*/
static get STEP() {
// 4 * 8000;
return 32000;
}
/**
* @private
*/
decryptChunk_(encrypted, key, initVector, decrypted) {
return function () {
const bytes = decrypt(encrypted, key, initVector);
decrypted.set(bytes, encrypted.byteOffset);
};
}
}
var commonjsGlobal = typeof globalThis !== 'undefined' ? globalThis : typeof window !== 'undefined' ? window : typeof global !== 'undefined' ? global : typeof self !== 'undefined' ? self : {};
var win;
if (typeof window !== "undefined") {
win = window;
} else if (typeof commonjsGlobal !== "undefined") {
win = commonjsGlobal;
} else if (typeof self !== "undefined") {
win = self;
} else {
win = {};
}
var window_1 = win;
var isArrayBufferView = function isArrayBufferView(obj) {
if (ArrayBuffer.isView === 'function') {
return ArrayBuffer.isView(obj);
}
return obj && obj.buffer instanceof ArrayBuffer;
};
var BigInt = window_1.BigInt || Number;
[BigInt('0x1'), BigInt('0x100'), BigInt('0x10000'), BigInt('0x1000000'), BigInt('0x100000000'), BigInt('0x10000000000'), BigInt('0x1000000000000'), BigInt('0x100000000000000'), BigInt('0x10000000000000000')];
(function () {
var a = new Uint16Array([0xFFCC]);
var b = new Uint8Array(a.buffer, a.byteOffset, a.byteLength);
if (b[0] === 0xFF) {
return 'big';
}
if (b[0] === 0xCC) {
return 'little';
}
return 'unknown';
})();
/**
* Creates an object for sending to a web worker modifying properties that are TypedArrays
* into a new object with seperated properties for the buffer, byteOffset, and byteLength.
*
* @param {Object} message
* Object of properties and values to send to the web worker
* @return {Object}
* Modified message with TypedArray values expanded
* @function createTransferableMessage
*/
const createTransferableMessage = function (message) {
const transferable = {};
Object.keys(message).forEach(key => {
const value = message[key];
if (isArrayBufferView(value)) {
transferable[key] = {
bytes: value.buffer,
byteOffset: value.byteOffset,
byteLength: value.byteLength
};
} else {
transferable[key] = value;
}
});
return transferable;
};
/* global self */
/**
* Our web worker interface so that things can talk to aes-decrypter
* that will be running in a web worker. the scope is passed to this by
* webworkify.
*/
self.onmessage = function (event) {
const data = event.data;
const encrypted = new Uint8Array(data.encrypted.bytes, data.encrypted.byteOffset, data.encrypted.byteLength);
const key = new Uint32Array(data.key.bytes, data.key.byteOffset, data.key.byteLength / 4);
const iv = new Uint32Array(data.iv.bytes, data.iv.byteOffset, data.iv.byteLength / 4);
/* eslint-disable no-new, handle-callback-err */
new Decrypter(encrypted, key, iv, function (err, bytes) {
self.postMessage(createTransferableMessage({
source: data.source,
decrypted: bytes
}), [bytes.buffer]);
});
/* eslint-enable */
};
}));
var Decrypter = factory(workerCode);
/* rollup-plugin-worker-factory end for worker!/home/runner/work/http-streaming/http-streaming/src/decrypter-worker.js */
/**
* Convert the properties of an HLS track into an audioTrackKind.
*
* @private
*/
const audioTrackKind_ = properties => {
let kind = properties.default ? 'main' : 'alternative';
if (properties.characteristics && properties.characteristics.indexOf('public.accessibility.describes-video') >= 0) {
kind = 'main-desc';
}
return kind;
};
/**
* Pause provided segment loader and playlist loader if active
*
* @param {SegmentLoader} segmentLoader
* SegmentLoader to pause
* @param {Object} mediaType
* Active media type
* @function stopLoaders
*/
const stopLoaders = (segmentLoader, mediaType) => {
segmentLoader.abort();
segmentLoader.pause();
if (mediaType && mediaType.activePlaylistLoader) {
mediaType.activePlaylistLoader.pause();
mediaType.activePlaylistLoader = null;
}
};
/**
* Start loading provided segment loader and playlist loader
*
* @param {PlaylistLoader} playlistLoader
* PlaylistLoader to start loading
* @param {Object} mediaType
* Active media type
* @function startLoaders
*/
const startLoaders = (playlistLoader, mediaType) => {
// Segment loader will be started after `loadedmetadata` or `loadedplaylist` from the
// playlist loader
mediaType.activePlaylistLoader = playlistLoader;
playlistLoader.load();
};
/**
* Returns a function to be called when the media group changes. It performs a
* non-destructive (preserve the buffer) resync of the SegmentLoader. This is because a
* change of group is merely a rendition switch of the same content at another encoding,
* rather than a change of content, such as switching audio from English to Spanish.
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Handler for a non-destructive resync of SegmentLoader when the active media
* group changes.
* @function onGroupChanged
*/
const onGroupChanged = (type, settings) => () => {
const {
segmentLoaders: {
[type]: segmentLoader,
main: mainSegmentLoader
},
mediaTypes: {
[type]: mediaType
}
} = settings;
const activeTrack = mediaType.activeTrack();
const activeGroup = mediaType.getActiveGroup();
const previousActiveLoader = mediaType.activePlaylistLoader;
const lastGroup = mediaType.lastGroup_; // the group did not change do nothing
if (activeGroup && lastGroup && activeGroup.id === lastGroup.id) {
return;
}
mediaType.lastGroup_ = activeGroup;
mediaType.lastTrack_ = activeTrack;
stopLoaders(segmentLoader, mediaType);
if (!activeGroup || activeGroup.isMainPlaylist) {
// there is no group active or active group is a main playlist and won't change
return;
}
if (!activeGroup.playlistLoader) {
if (previousActiveLoader) {
// The previous group had a playlist loader but the new active group does not
// this means we are switching from demuxed to muxed audio. In this case we want to
// do a destructive reset of the main segment loader and not restart the audio
// loaders.
mainSegmentLoader.resetEverything();
}
return;
} // Non-destructive resync
segmentLoader.resyncLoader();
startLoaders(activeGroup.playlistLoader, mediaType);
};
const onGroupChanging = (type, settings) => () => {
const {
segmentLoaders: {
[type]: segmentLoader
},
mediaTypes: {
[type]: mediaType
}
} = settings;
mediaType.lastGroup_ = null;
segmentLoader.abort();
segmentLoader.pause();
};
/**
* Returns a function to be called when the media track changes. It performs a
* destructive reset of the SegmentLoader to ensure we start loading as close to
* currentTime as possible.
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Handler for a destructive reset of SegmentLoader when the active media
* track changes.
* @function onTrackChanged
*/
const onTrackChanged = (type, settings) => () => {
const {
mainPlaylistLoader,
segmentLoaders: {
[type]: segmentLoader,
main: mainSegmentLoader
},
mediaTypes: {
[type]: mediaType
}
} = settings;
const activeTrack = mediaType.activeTrack();
const activeGroup = mediaType.getActiveGroup();
const previousActiveLoader = mediaType.activePlaylistLoader;
const lastTrack = mediaType.lastTrack_; // track did not change, do nothing
if (lastTrack && activeTrack && lastTrack.id === activeTrack.id) {
return;
}
mediaType.lastGroup_ = activeGroup;
mediaType.lastTrack_ = activeTrack;
stopLoaders(segmentLoader, mediaType);
if (!activeGroup) {
// there is no group active so we do not want to restart loaders
return;
}
if (activeGroup.isMainPlaylist) {
// track did not change, do nothing
if (!activeTrack || !lastTrack || activeTrack.id === lastTrack.id) {
return;
}
const pc = settings.vhs.playlistController_;
const newPlaylist = pc.selectPlaylist(); // media will not change do nothing
if (pc.media() === newPlaylist) {
return;
}
mediaType.logger_(`track change. Switching main audio from ${lastTrack.id} to ${activeTrack.id}`);
mainPlaylistLoader.pause();
mainSegmentLoader.resetEverything();
pc.fastQualityChange_(newPlaylist);
return;
}
if (type === 'AUDIO') {
if (!activeGroup.playlistLoader) {
// when switching from demuxed audio/video to muxed audio/video (noted by no
// playlist loader for the audio group), we want to do a destructive reset of the
// main segment loader and not restart the audio loaders
mainSegmentLoader.setAudio(true); // don't have to worry about disabling the audio of the audio segment loader since
// it should be stopped
mainSegmentLoader.resetEverything();
return;
} // although the segment loader is an audio segment loader, call the setAudio
// function to ensure it is prepared to re-append the init segment (or handle other
// config changes)
segmentLoader.setAudio(true);
mainSegmentLoader.setAudio(false);
}
if (previousActiveLoader === activeGroup.playlistLoader) {
// Nothing has actually changed. This can happen because track change events can fire
// multiple times for a "single" change. One for enabling the new active track, and
// one for disabling the track that was active
startLoaders(activeGroup.playlistLoader, mediaType);
return;
}
if (segmentLoader.track) {
// For WebVTT, set the new text track in the segmentloader
segmentLoader.track(activeTrack);
} // destructive reset
segmentLoader.resetEverything();
startLoaders(activeGroup.playlistLoader, mediaType);
};
const onError = {
/**
* Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
* an error.
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Error handler. Logs warning (or error if the playlist is excluded) to
* console and switches back to default audio track.
* @function onError.AUDIO
*/
AUDIO: (type, settings) => () => {
const {
mediaTypes: {
[type]: mediaType
},
excludePlaylist
} = settings; // switch back to default audio track
const activeTrack = mediaType.activeTrack();
const activeGroup = mediaType.activeGroup();
const id = (activeGroup.filter(group => group.default)[0] || activeGroup[0]).id;
const defaultTrack = mediaType.tracks[id];
if (activeTrack === defaultTrack) {
// Default track encountered an error. All we can do now is exclude the current
// rendition and hope another will switch audio groups
excludePlaylist({
error: {
message: 'Problem encountered loading the default audio track.'
}
});
return;
}
videojs.log.warn('Problem encountered loading the alternate audio track.' + 'Switching back to default.');
for (const trackId in mediaType.tracks) {
mediaType.tracks[trackId].enabled = mediaType.tracks[trackId] === defaultTrack;
}
mediaType.onTrackChanged();
},
/**
* Returns a function to be called when a SegmentLoader or PlaylistLoader encounters
* an error.
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Error handler. Logs warning to console and disables the active subtitle track
* @function onError.SUBTITLES
*/
SUBTITLES: (type, settings) => () => {
const {
mediaTypes: {
[type]: mediaType
}
} = settings;
videojs.log.warn('Problem encountered loading the subtitle track.' + 'Disabling subtitle track.');
const track = mediaType.activeTrack();
if (track) {
track.mode = 'disabled';
}
mediaType.onTrackChanged();
}
};
const setupListeners = {
/**
* Setup event listeners for audio playlist loader
*
* @param {string} type
* MediaGroup type
* @param {PlaylistLoader|null} playlistLoader
* PlaylistLoader to register listeners on
* @param {Object} settings
* Object containing required information for media groups
* @function setupListeners.AUDIO
*/
AUDIO: (type, playlistLoader, settings) => {
if (!playlistLoader) {
// no playlist loader means audio will be muxed with the video
return;
}
const {
tech,
requestOptions,
segmentLoaders: {
[type]: segmentLoader
}
} = settings;
playlistLoader.on('loadedmetadata', () => {
const media = playlistLoader.media();
segmentLoader.playlist(media, requestOptions); // if the video is already playing, or if this isn't a live video and preload
// permits, start downloading segments
if (!tech.paused() || media.endList && tech.preload() !== 'none') {
segmentLoader.load();
}
});
playlistLoader.on('loadedplaylist', () => {
segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
if (!tech.paused()) {
segmentLoader.load();
}
});
playlistLoader.on('error', onError[type](type, settings));
},
/**
* Setup event listeners for subtitle playlist loader
*
* @param {string} type
* MediaGroup type
* @param {PlaylistLoader|null} playlistLoader
* PlaylistLoader to register listeners on
* @param {Object} settings
* Object containing required information for media groups
* @function setupListeners.SUBTITLES
*/
SUBTITLES: (type, playlistLoader, settings) => {
const {
tech,
requestOptions,
segmentLoaders: {
[type]: segmentLoader
},
mediaTypes: {
[type]: mediaType
}
} = settings;
playlistLoader.on('loadedmetadata', () => {
const media = playlistLoader.media();
segmentLoader.playlist(media, requestOptions);
segmentLoader.track(mediaType.activeTrack()); // if the video is already playing, or if this isn't a live video and preload
// permits, start downloading segments
if (!tech.paused() || media.endList && tech.preload() !== 'none') {
segmentLoader.load();
}
});
playlistLoader.on('loadedplaylist', () => {
segmentLoader.playlist(playlistLoader.media(), requestOptions); // If the player isn't paused, ensure that the segment loader is running
if (!tech.paused()) {
segmentLoader.load();
}
});
playlistLoader.on('error', onError[type](type, settings));
}
};
const initialize = {
/**
* Setup PlaylistLoaders and AudioTracks for the audio groups
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @function initialize.AUDIO
*/
'AUDIO': (type, settings) => {
const {
vhs,
sourceType,
segmentLoaders: {
[type]: segmentLoader
},
requestOptions,
main: {
mediaGroups
},
mediaTypes: {
[type]: {
groups,
tracks,
logger_
}
},
mainPlaylistLoader
} = settings;
const audioOnlyMain = isAudioOnly(mainPlaylistLoader.main); // force a default if we have none
if (!mediaGroups[type] || Object.keys(mediaGroups[type]).length === 0) {
mediaGroups[type] = {
main: {
default: {
default: true
}
}
};
if (audioOnlyMain) {
mediaGroups[type].main.default.playlists = mainPlaylistLoader.main.playlists;
}
}
for (const groupId in mediaGroups[type]) {
if (!groups[groupId]) {
groups[groupId] = [];
}
for (const variantLabel in mediaGroups[type][groupId]) {
let properties = mediaGroups[type][groupId][variantLabel];
let playlistLoader;
if (audioOnlyMain) {
logger_(`AUDIO group '${groupId}' label '${variantLabel}' is a main playlist`);
properties.isMainPlaylist = true;
playlistLoader = null; // if vhs-json was provided as the source, and the media playlist was resolved,
// use the resolved media playlist object
} else if (sourceType === 'vhs-json' && properties.playlists) {
playlistLoader = new PlaylistLoader(properties.playlists[0], vhs, requestOptions);
} else if (properties.resolvedUri) {
playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions); // TODO: dash isn't the only type with properties.playlists
// should we even have properties.playlists in this check.
} else if (properties.playlists && sourceType === 'dash') {
playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
} else {
// no resolvedUri means the audio is muxed with the video when using this
// audio track
playlistLoader = null;
}
properties = merge({
id: variantLabel,
playlistLoader
}, properties);
setupListeners[type](type, properties.playlistLoader, settings);
groups[groupId].push(properties);
if (typeof tracks[variantLabel] === 'undefined') {
const track = new videojs.AudioTrack({
id: variantLabel,
kind: audioTrackKind_(properties),
enabled: false,
language: properties.language,
default: properties.default,
label: variantLabel
});
tracks[variantLabel] = track;
}
}
} // setup single error event handler for the segment loader
segmentLoader.on('error', onError[type](type, settings));
},
/**
* Setup PlaylistLoaders and TextTracks for the subtitle groups
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @function initialize.SUBTITLES
*/
'SUBTITLES': (type, settings) => {
const {
tech,
vhs,
sourceType,
segmentLoaders: {
[type]: segmentLoader
},
requestOptions,
main: {
mediaGroups
},
mediaTypes: {
[type]: {
groups,
tracks
}
},
mainPlaylistLoader
} = settings;
for (const groupId in mediaGroups[type]) {
if (!groups[groupId]) {
groups[groupId] = [];
}
for (const variantLabel in mediaGroups[type][groupId]) {
if (!vhs.options_.useForcedSubtitles && mediaGroups[type][groupId][variantLabel].forced) {
// Subtitle playlists with the forced attribute are not selectable in Safari.
// According to Apple's HLS Authoring Specification:
// If content has forced subtitles and regular subtitles in a given language,
// the regular subtitles track in that language MUST contain both the forced
// subtitles and the regular subtitles for that language.
// Because of this requirement and that Safari does not add forced subtitles,
// forced subtitles are skipped here to maintain consistent experience across
// all platforms
continue;
}
let properties = mediaGroups[type][groupId][variantLabel];
let playlistLoader;
if (sourceType === 'hls') {
playlistLoader = new PlaylistLoader(properties.resolvedUri, vhs, requestOptions);
} else if (sourceType === 'dash') {
const playlists = properties.playlists.filter(p => p.excludeUntil !== Infinity);
if (!playlists.length) {
return;
}
playlistLoader = new DashPlaylistLoader(properties.playlists[0], vhs, requestOptions, mainPlaylistLoader);
} else if (sourceType === 'vhs-json') {
playlistLoader = new PlaylistLoader(
// if the vhs-json object included the media playlist, use the media playlist
// as provided, otherwise use the resolved URI to load the playlist
properties.playlists ? properties.playlists[0] : properties.resolvedUri, vhs, requestOptions);
}
properties = merge({
id: variantLabel,
playlistLoader
}, properties);
setupListeners[type](type, properties.playlistLoader, settings);
groups[groupId].push(properties);
if (typeof tracks[variantLabel] === 'undefined') {
const track = tech.addRemoteTextTrack({
id: variantLabel,
kind: 'subtitles',
default: properties.default && properties.autoselect,
language: properties.language,
label: variantLabel
}, false).track;
tracks[variantLabel] = track;
}
}
} // setup single error event handler for the segment loader
segmentLoader.on('error', onError[type](type, settings));
},
/**
* Setup TextTracks for the closed-caption groups
*
* @param {String} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @function initialize['CLOSED-CAPTIONS']
*/
'CLOSED-CAPTIONS': (type, settings) => {
const {
tech,
main: {
mediaGroups
},
mediaTypes: {
[type]: {
groups,
tracks
}
}
} = settings;
for (const groupId in mediaGroups[type]) {
if (!groups[groupId]) {
groups[groupId] = [];
}
for (const variantLabel in mediaGroups[type][groupId]) {
const properties = mediaGroups[type][groupId][variantLabel]; // Look for either 608 (CCn) or 708 (SERVICEn) caption services
if (!/^(?:CC|SERVICE)/.test(properties.instreamId)) {
continue;
}
const captionServices = tech.options_.vhs && tech.options_.vhs.captionServices || {};
let newProps = {
label: variantLabel,
language: properties.language,
instreamId: properties.instreamId,
default: properties.default && properties.autoselect
};
if (captionServices[newProps.instreamId]) {
newProps = merge(newProps, captionServices[newProps.instreamId]);
}
if (newProps.default === undefined) {
delete newProps.default;
} // No PlaylistLoader is required for Closed-Captions because the captions are
// embedded within the video stream
groups[groupId].push(merge({
id: variantLabel
}, properties));
if (typeof tracks[variantLabel] === 'undefined') {
const track = tech.addRemoteTextTrack({
id: newProps.instreamId,
kind: 'captions',
default: newProps.default,
language: newProps.language,
label: newProps.label
}, false).track;
tracks[variantLabel] = track;
}
}
}
}
};
const groupMatch = (list, media) => {
for (let i = 0; i < list.length; i++) {
if (playlistMatch(media, list[i])) {
return true;
}
if (list[i].playlists && groupMatch(list[i].playlists, media)) {
return true;
}
}
return false;
};
/**
* Returns a function used to get the active group of the provided type
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Function that returns the active media group for the provided type. Takes an
* optional parameter {TextTrack} track. If no track is provided, a list of all
* variants in the group, otherwise the variant corresponding to the provided
* track is returned.
* @function activeGroup
*/
const activeGroup = (type, settings) => track => {
const {
mainPlaylistLoader,
mediaTypes: {
[type]: {
groups
}
}
} = settings;
const media = mainPlaylistLoader.media();
if (!media) {
return null;
}
let variants = null; // set to variants to main media active group
if (media.attributes[type]) {
variants = groups[media.attributes[type]];
}
const groupKeys = Object.keys(groups);
if (!variants) {
// find the mainPlaylistLoader media
// that is in a media group if we are dealing
// with audio only
if (type === 'AUDIO' && groupKeys.length > 1 && isAudioOnly(settings.main)) {
for (let i = 0; i < groupKeys.length; i++) {
const groupPropertyList = groups[groupKeys[i]];
if (groupMatch(groupPropertyList, media)) {
variants = groupPropertyList;
break;
}
} // use the main group if it exists
} else if (groups.main) {
variants = groups.main; // only one group, use that one
} else if (groupKeys.length === 1) {
variants = groups[groupKeys[0]];
}
}
if (typeof track === 'undefined') {
return variants;
}
if (track === null || !variants) {
// An active track was specified so a corresponding group is expected. track === null
// means no track is currently active so there is no corresponding group
return null;
}
return variants.filter(props => props.id === track.id)[0] || null;
};
const activeTrack = {
/**
* Returns a function used to get the active track of type provided
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Function that returns the active media track for the provided type. Returns
* null if no track is active
* @function activeTrack.AUDIO
*/
AUDIO: (type, settings) => () => {
const {
mediaTypes: {
[type]: {
tracks
}
}
} = settings;
for (const id in tracks) {
if (tracks[id].enabled) {
return tracks[id];
}
}
return null;
},
/**
* Returns a function used to get the active track of type provided
*
* @param {string} type
* MediaGroup type
* @param {Object} settings
* Object containing required information for media groups
* @return {Function}
* Function that returns the active media track for the provided type. Returns
* null if no track is active
* @function activeTrack.SUBTITLES
*/
SUBTITLES: (type, settings) => () => {
const {
mediaTypes: {
[type]: {
tracks
}
}
} = settings;
for (const id in tracks) {
if (tracks[id].mode === 'showing' || tracks[id].mode === 'hidden') {
return tracks[id];
}
}
return null;
}
};
const getActiveGroup = (type, {
mediaTypes
}) => () => {
const activeTrack_ = mediaTypes[type].activeTrack();
if (!activeTrack_) {
return null;
}
return mediaTypes[type].activeGroup(activeTrack_);
};
/**
* Setup PlaylistLoaders and Tracks for media groups (Audio, Subtitles,
* Closed-Captions) specified in the main manifest.
*
* @param {Object} settings
* Object containing required information for setting up the media groups
* @param {Tech} settings.tech
* The tech of the player
* @param {Object} settings.requestOptions
* XHR request options used by the segment loaders
* @param {PlaylistLoader} settings.mainPlaylistLoader
* PlaylistLoader for the main source
* @param {VhsHandler} settings.vhs
* VHS SourceHandler
* @param {Object} settings.main
* The parsed main manifest
* @param {Object} settings.mediaTypes
* Object to store the loaders, tracks, and utility methods for each media type
* @param {Function} settings.excludePlaylist
* Excludes the current rendition and forces a rendition switch.
* @function setupMediaGroups
*/
const setupMediaGroups = settings => {
['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
initialize[type](type, settings);
});
const {
mediaTypes,
mainPlaylistLoader,
tech,
vhs,
segmentLoaders: {
['AUDIO']: audioSegmentLoader,
main: mainSegmentLoader
}
} = settings; // setup active group and track getters and change event handlers
['AUDIO', 'SUBTITLES'].forEach(type => {
mediaTypes[type].activeGroup = activeGroup(type, settings);
mediaTypes[type].activeTrack = activeTrack[type](type, settings);
mediaTypes[type].onGroupChanged = onGroupChanged(type, settings);
mediaTypes[type].onGroupChanging = onGroupChanging(type, settings);
mediaTypes[type].onTrackChanged = onTrackChanged(type, settings);
mediaTypes[type].getActiveGroup = getActiveGroup(type, settings);
}); // DO NOT enable the default subtitle or caption track.
// DO enable the default audio track
const audioGroup = mediaTypes.AUDIO.activeGroup();
if (audioGroup) {
const groupId = (audioGroup.filter(group => group.default)[0] || audioGroup[0]).id;
mediaTypes.AUDIO.tracks[groupId].enabled = true;
mediaTypes.AUDIO.onGroupChanged();
mediaTypes.AUDIO.onTrackChanged();
const activeAudioGroup = mediaTypes.AUDIO.getActiveGroup(); // a similar check for handling setAudio on each loader is run again each time the
// track is changed, but needs to be handled here since the track may not be considered
// changed on the first call to onTrackChanged
if (!activeAudioGroup.playlistLoader) {
// either audio is muxed with video or the stream is audio only
mainSegmentLoader.setAudio(true);
} else {
// audio is demuxed
mainSegmentLoader.setAudio(false);
audioSegmentLoader.setAudio(true);
}
}
mainPlaylistLoader.on('mediachange', () => {
['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanged());
});
mainPlaylistLoader.on('mediachanging', () => {
['AUDIO', 'SUBTITLES'].forEach(type => mediaTypes[type].onGroupChanging());
}); // custom audio track change event handler for usage event
const onAudioTrackChanged = () => {
mediaTypes.AUDIO.onTrackChanged();
tech.trigger({
type: 'usage',
name: 'vhs-audio-change'
});
};
tech.audioTracks().addEventListener('change', onAudioTrackChanged);
tech.remoteTextTracks().addEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
vhs.on('dispose', () => {
tech.audioTracks().removeEventListener('change', onAudioTrackChanged);
tech.remoteTextTracks().removeEventListener('change', mediaTypes.SUBTITLES.onTrackChanged);
}); // clear existing audio tracks and add the ones we just created
tech.clearTracks('audio');
for (const id in mediaTypes.AUDIO.tracks) {
tech.audioTracks().addTrack(mediaTypes.AUDIO.tracks[id]);
}
};
/**
* Creates skeleton object used to store the loaders, tracks, and utility methods for each
* media type
*
* @return {Object}
* Object to store the loaders, tracks, and utility methods for each media type
* @function createMediaTypes
*/
const createMediaTypes = () => {
const mediaTypes = {};
['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
mediaTypes[type] = {
groups: {},
tracks: {},
activePlaylistLoader: null,
activeGroup: noop,
activeTrack: noop,
getActiveGroup: noop,
onGroupChanged: noop,
onTrackChanged: noop,
lastTrack_: null,
logger_: logger(`MediaGroups[${type}]`)
};
});
return mediaTypes;
};
/**
* A utility class for setting properties and maintaining the state of the content steering manifest.
*
* Content Steering manifest format:
* VERSION: number (required) currently only version 1 is supported.
* TTL: number in seconds (optional) until the next content steering manifest reload.
* RELOAD-URI: string (optional) uri to fetch the next content steering manifest.
* SERVICE-LOCATION-PRIORITY or PATHWAY-PRIORITY a non empty array of unique string values.
* PATHWAY-CLONES: array (optional) (HLS only) pathway clone objects to copy from other playlists.
*/
class SteeringManifest {
constructor() {
this.priority_ = [];
this.pathwayClones_ = new Map();
}
set version(number) {
// Only version 1 is currently supported for both DASH and HLS.
if (number === 1) {
this.version_ = number;
}
}
set ttl(seconds) {
// TTL = time-to-live, default = 300 seconds.
this.ttl_ = seconds || 300;
}
set reloadUri(uri) {
if (uri) {
// reload URI can be relative to the previous reloadUri.
this.reloadUri_ = resolveUrl(this.reloadUri_, uri);
}
}
set priority(array) {
// priority must be non-empty and unique values.
if (array && array.length) {
this.priority_ = array;
}
}
set pathwayClones(array) {
// pathwayClones must be non-empty.
if (array && array.length) {
this.pathwayClones_ = new Map(array.map(clone => [clone.ID, clone]));
}
}
get version() {
return this.version_;
}
get ttl() {
return this.ttl_;
}
get reloadUri() {
return this.reloadUri_;
}
get priority() {
return this.priority_;
}
get pathwayClones() {
return this.pathwayClones_;
}
}
/**
* This class represents a content steering manifest and associated state. See both HLS and DASH specifications.
* HLS: https://developer.apple.com/streaming/HLSContentSteeringSpecification.pdf and
* https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/ section 4.4.6.6.
* DASH: https://dashif.org/docs/DASH-IF-CTS-00XX-Content-Steering-Community-Review.pdf
*
* @param {function} xhr for making a network request from the browser.
* @param {function} bandwidth for fetching the current bandwidth from the main segment loader.
*/
class ContentSteeringController extends videojs.EventTarget {
constructor(xhr, bandwidth) {
super();
this.currentPathway = null;
this.defaultPathway = null;
this.queryBeforeStart = false;
this.availablePathways_ = new Set();
this.steeringManifest = new SteeringManifest();
this.proxyServerUrl_ = null;
this.manifestType_ = null;
this.ttlTimeout_ = null;
this.request_ = null;
this.currentPathwayClones = new Map();
this.nextPathwayClones = new Map();
this.excludedSteeringManifestURLs = new Set();
this.logger_ = logger('Content Steering');
this.xhr_ = xhr;
this.getBandwidth_ = bandwidth;
}
/**
* Assigns the content steering tag properties to the steering controller
*
* @param {string} baseUrl the baseURL from the main manifest for resolving the steering manifest url
* @param {Object} steeringTag the content steering tag from the main manifest
*/
assignTagProperties(baseUrl, steeringTag) {
this.manifestType_ = steeringTag.serverUri ? 'HLS' : 'DASH'; // serverUri is HLS serverURL is DASH
const steeringUri = steeringTag.serverUri || steeringTag.serverURL;
if (!steeringUri) {
this.logger_(`steering manifest URL is ${steeringUri}, cannot request steering manifest.`);
this.trigger('error');
return;
} // Content steering manifests can be encoded as a data URI. We can decode, parse and return early if that's the case.
if (steeringUri.startsWith('data:')) {
this.decodeDataUriManifest_(steeringUri.substring(steeringUri.indexOf(',') + 1));
return;
} // reloadUri is the resolution of the main manifest URL and steering URL.
this.steeringManifest.reloadUri = resolveUrl(baseUrl, steeringUri); // pathwayId is HLS defaultServiceLocation is DASH
this.defaultPathway = steeringTag.pathwayId || steeringTag.defaultServiceLocation; // currently only DASH supports the following properties on tags.
this.queryBeforeStart = steeringTag.queryBeforeStart;
this.proxyServerUrl_ = steeringTag.proxyServerURL; // trigger a steering event if we have a pathway from the content steering tag.
// this tells VHS which segment pathway to start with.
// If queryBeforeStart is true we need to wait for the steering manifest response.
if (this.defaultPathway && !this.queryBeforeStart) {
this.trigger('content-steering');
}
}
/**
* Requests the content steering manifest and parse the response. This should only be called after
* assignTagProperties was called with a content steering tag.
*
* @param {string} initialUri The optional uri to make the request with.
* If set, the request should be made with exactly what is passed in this variable.
* This scenario should only happen once on initalization.
*/
requestSteeringManifest(initial) {
const reloadUri = this.steeringManifest.reloadUri;
if (!reloadUri) {
return;
} // We currently don't support passing MPD query parameters directly to the content steering URL as this requires
// ExtUrlQueryInfo tag support. See the DASH content steering spec section 8.1.
// This request URI accounts for manifest URIs that have been excluded.
const uri = initial ? reloadUri : this.getRequestURI(reloadUri); // If there are no valid manifest URIs, we should stop content steering.
if (!uri) {
this.logger_('No valid content steering manifest URIs. Stopping content steering.');
this.trigger('error');
this.dispose();
return;
}
const metadata = {
contentSteeringInfo: {
uri
}
};
this.trigger({
type: 'contentsteeringloadstart',
metadata
});
this.request_ = this.xhr_({
uri,
requestType: 'content-steering-manifest'
}, (error, errorInfo) => {
if (error) {
// If the client receives HTTP 410 Gone in response to a manifest request,
// it MUST NOT issue another request for that URI for the remainder of the
// playback session. It MAY continue to use the most-recently obtained set
// of Pathways.
if (errorInfo.status === 410) {
this.logger_(`manifest request 410 ${error}.`);
this.logger_(`There will be no more content steering requests to ${uri} this session.`);
this.excludedSteeringManifestURLs.add(uri);
return;
} // If the client receives HTTP 429 Too Many Requests with a Retry-After
// header in response to a manifest request, it SHOULD wait until the time
// specified by the Retry-After header to reissue the request.
if (errorInfo.status === 429) {
const retrySeconds = errorInfo.responseHeaders['retry-after'];
this.logger_(`manifest request 429 ${error}.`);
this.logger_(`content steering will retry in ${retrySeconds} seconds.`);
this.startTTLTimeout_(parseInt(retrySeconds, 10));
return;
} // If the Steering Manifest cannot be loaded and parsed correctly, the
// client SHOULD continue to use the previous values and attempt to reload
// it after waiting for the previously-specified TTL (or 5 minutes if
// none).
this.logger_(`manifest failed to load ${error}.`);
this.startTTLTimeout_();
return;
}
this.trigger({
type: 'contentsteeringloadcomplete',
metadata
});
let steeringManifestJson;
try {
steeringManifestJson = JSON.parse(this.request_.responseText);
} catch (parseError) {
const errorMetadata = {
errorType: videojs.Error.StreamingContentSteeringParserError,
error: parseError
};
this.trigger({
type: 'error',
metadata: errorMetadata
});
}
this.assignSteeringProperties_(steeringManifestJson);
const parsedMetadata = {
contentSteeringInfo: metadata.contentSteeringInfo,
contentSteeringManifest: {
version: this.steeringManifest.version,
reloadUri: this.steeringManifest.reloadUri,
priority: this.steeringManifest.priority
}
};
this.trigger({
type: 'contentsteeringparsed',
metadata: parsedMetadata
});
this.startTTLTimeout_();
});
}
/**
* Set the proxy server URL and add the steering manifest url as a URI encoded parameter.
*
* @param {string} steeringUrl the steering manifest url
* @return the steering manifest url to a proxy server with all parameters set
*/
setProxyServerUrl_(steeringUrl) {
const steeringUrlObject = new window.URL(steeringUrl);
const proxyServerUrlObject = new window.URL(this.proxyServerUrl_);
proxyServerUrlObject.searchParams.set('url', encodeURI(steeringUrlObject.toString()));
return this.setSteeringParams_(proxyServerUrlObject.toString());
}
/**
* Decodes and parses the data uri encoded steering manifest
*
* @param {string} dataUri the data uri to be decoded and parsed.
*/
decodeDataUriManifest_(dataUri) {
const steeringManifestJson = JSON.parse(window.atob(dataUri));
this.assignSteeringProperties_(steeringManifestJson);
}
/**
* Set the HLS or DASH content steering manifest request query parameters. For example:
* _HLS_pathway="" and _HLS_throughput=
* _DASH_pathway and _DASH_throughput
*
* @param {string} uri to add content steering server parameters to.
* @return a new uri as a string with the added steering query parameters.
*/
setSteeringParams_(url) {
const urlObject = new window.URL(url);
const path = this.getPathway();
const networkThroughput = this.getBandwidth_();
if (path) {
const pathwayKey = `_${this.manifestType_}_pathway`;
urlObject.searchParams.set(pathwayKey, path);
}
if (networkThroughput) {
const throughputKey = `_${this.manifestType_}_throughput`;
urlObject.searchParams.set(throughputKey, networkThroughput);
}
return urlObject.toString();
}
/**
* Assigns the current steering manifest properties and to the SteeringManifest object
*
* @param {Object} steeringJson the raw JSON steering manifest
*/
assignSteeringProperties_(steeringJson) {
this.steeringManifest.version = steeringJson.VERSION;
if (!this.steeringManifest.version) {
this.logger_(`manifest version is ${steeringJson.VERSION}, which is not supported.`);
this.trigger('error');
return;
}
this.steeringManifest.ttl = steeringJson.TTL;
this.steeringManifest.reloadUri = steeringJson['RELOAD-URI']; // HLS = PATHWAY-PRIORITY required. DASH = SERVICE-LOCATION-PRIORITY optional
this.steeringManifest.priority = steeringJson['PATHWAY-PRIORITY'] || steeringJson['SERVICE-LOCATION-PRIORITY']; // Pathway clones to be created/updated in HLS.
// See section 7.2 https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
this.steeringManifest.pathwayClones = steeringJson['PATHWAY-CLONES'];
this.nextPathwayClones = this.steeringManifest.pathwayClones; // 1. apply first pathway from the array.
// 2. if first pathway doesn't exist in manifest, try next pathway.
// a. if all pathways are exhausted, ignore the steering manifest priority.
// 3. if segments fail from an established pathway, try all variants/renditions, then exclude the failed pathway.
// a. exclude a pathway for a minimum of the last TTL duration. Meaning, from the next steering response,
// the excluded pathway will be ignored.
// See excludePathway usage in excludePlaylist().
// If there are no available pathways, we need to stop content steering.
if (!this.availablePathways_.size) {
this.logger_('There are no available pathways for content steering. Ending content steering.');
this.trigger('error');
this.dispose();
}
const chooseNextPathway = pathwaysByPriority => {
for (const path of pathwaysByPriority) {
if (this.availablePathways_.has(path)) {
return path;
}
} // If no pathway matches, ignore the manifest and choose the first available.
return [...this.availablePathways_][0];
};
const nextPathway = chooseNextPathway(this.steeringManifest.priority);
if (this.currentPathway !== nextPathway) {
this.currentPathway = nextPathway;
this.trigger('content-steering');
}
}
/**
* Returns the pathway to use for steering decisions
*
* @return {string} returns the current pathway or the default
*/
getPathway() {
return this.currentPathway || this.defaultPathway;
}
/**
* Chooses the manifest request URI based on proxy URIs and server URLs.
* Also accounts for exclusion on certain manifest URIs.
*
* @param {string} reloadUri the base uri before parameters
*
* @return {string} the final URI for the request to the manifest server.
*/
getRequestURI(reloadUri) {
if (!reloadUri) {
return null;
}
const isExcluded = uri => this.excludedSteeringManifestURLs.has(uri);
if (this.proxyServerUrl_) {
const proxyURI = this.setProxyServerUrl_(reloadUri);
if (!isExcluded(proxyURI)) {
return proxyURI;
}
}
const steeringURI = this.setSteeringParams_(reloadUri);
if (!isExcluded(steeringURI)) {
return steeringURI;
} // Return nothing if all valid manifest URIs are excluded.
return null;
}
/**
* Start the timeout for re-requesting the steering manifest at the TTL interval.
*
* @param {number} ttl time in seconds of the timeout. Defaults to the
* ttl interval in the steering manifest
*/
startTTLTimeout_(ttl = this.steeringManifest.ttl) {
// 300 (5 minutes) is the default value.
const ttlMS = ttl * 1000;
this.ttlTimeout_ = window.setTimeout(() => {
this.requestSteeringManifest();
}, ttlMS);
}
/**
* Clear the TTL timeout if necessary.
*/
clearTTLTimeout_() {
window.clearTimeout(this.ttlTimeout_);
this.ttlTimeout_ = null;
}
/**
* aborts any current steering xhr and sets the current request object to null
*/
abort() {
if (this.request_) {
this.request_.abort();
}
this.request_ = null;
}
/**
* aborts steering requests clears the ttl timeout and resets all properties.
*/
dispose() {
this.off('content-steering');
this.off('error');
this.abort();
this.clearTTLTimeout_();
this.currentPathway = null;
this.defaultPathway = null;
this.queryBeforeStart = null;
this.proxyServerUrl_ = null;
this.manifestType_ = null;
this.ttlTimeout_ = null;
this.request_ = null;
this.excludedSteeringManifestURLs = new Set();
this.availablePathways_ = new Set();
this.steeringManifest = new SteeringManifest();
}
/**
* adds a pathway to the available pathways set
*
* @param {string} pathway the pathway string to add
*/
addAvailablePathway(pathway) {
if (pathway) {
this.availablePathways_.add(pathway);
}
}
/**
* Clears all pathways from the available pathways set
*/
clearAvailablePathways() {
this.availablePathways_.clear();
}
/**
* Removes a pathway from the available pathways set.
*/
excludePathway(pathway) {
return this.availablePathways_.delete(pathway);
}
/**
* Checks the refreshed DASH manifest content steering tag for changes.
*
* @param {string} baseURL new steering tag on DASH manifest refresh
* @param {Object} newTag the new tag to check for changes
* @return a true or false whether the new tag has different values
*/
didDASHTagChange(baseURL, newTag) {
return !newTag && this.steeringManifest.reloadUri || newTag && (resolveUrl(baseURL, newTag.serverURL) !== this.steeringManifest.reloadUri || newTag.defaultServiceLocation !== this.defaultPathway || newTag.queryBeforeStart !== this.queryBeforeStart || newTag.proxyServerURL !== this.proxyServerUrl_);
}
getAvailablePathways() {
return this.availablePathways_;
}
}
const ABORT_EARLY_EXCLUSION_SECONDS = 10;
let Vhs$1; // SegmentLoader stats that need to have each loader's
// values summed to calculate the final value
const loaderStats = ['mediaRequests', 'mediaRequestsAborted', 'mediaRequestsTimedout', 'mediaRequestsErrored', 'mediaTransferDuration', 'mediaBytesTransferred', 'mediaAppends'];
const sumLoaderStat = function (stat) {
return this.audioSegmentLoader_[stat] + this.mainSegmentLoader_[stat];
};
const shouldSwitchToMedia = function ({
currentPlaylist,
buffered,
currentTime,
nextPlaylist,
bufferLowWaterLine,
bufferHighWaterLine,
duration,
bufferBasedABR,
log
}) {
// we have no other playlist to switch to
if (!nextPlaylist) {
videojs.log.warn('We received no playlist to switch to. Please check your stream.');
return false;
}
const sharedLogLine = `allowing switch ${currentPlaylist && currentPlaylist.id || 'null'} -> ${nextPlaylist.id}`;
if (!currentPlaylist) {
log(`${sharedLogLine} as current playlist is not set`);
return true;
} // no need to switch if playlist is the same
if (nextPlaylist.id === currentPlaylist.id) {
return false;
} // determine if current time is in a buffered range.
const isBuffered = Boolean(findRange(buffered, currentTime).length); // If the playlist is live, then we want to not take low water line into account.
// This is because in LIVE, the player plays 3 segments from the end of the
// playlist, and if `BUFFER_LOW_WATER_LINE` is greater than the duration availble
// in those segments, a viewer will never experience a rendition upswitch.
if (!currentPlaylist.endList) {
// For LLHLS live streams, don't switch renditions before playback has started, as it almost
// doubles the time to first playback.
if (!isBuffered && typeof currentPlaylist.partTargetDuration === 'number') {
log(`not ${sharedLogLine} as current playlist is live llhls, but currentTime isn't in buffered.`);
return false;
}
log(`${sharedLogLine} as current playlist is live`);
return true;
}
const forwardBuffer = timeAheadOf(buffered, currentTime);
const maxBufferLowWaterLine = bufferBasedABR ? Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE : Config.MAX_BUFFER_LOW_WATER_LINE; // For the same reason as LIVE, we ignore the low water line when the VOD
// duration is below the max potential low water line
if (duration < maxBufferLowWaterLine) {
log(`${sharedLogLine} as duration < max low water line (${duration} < ${maxBufferLowWaterLine})`);
return true;
}
const nextBandwidth = nextPlaylist.attributes.BANDWIDTH;
const currBandwidth = currentPlaylist.attributes.BANDWIDTH; // when switching down, if our buffer is lower than the high water line,
// we can switch down
if (nextBandwidth < currBandwidth && (!bufferBasedABR || forwardBuffer < bufferHighWaterLine)) {
let logLine = `${sharedLogLine} as next bandwidth < current bandwidth (${nextBandwidth} < ${currBandwidth})`;
if (bufferBasedABR) {
logLine += ` and forwardBuffer < bufferHighWaterLine (${forwardBuffer} < ${bufferHighWaterLine})`;
}
log(logLine);
return true;
} // and if our buffer is higher than the low water line,
// we can switch up
if ((!bufferBasedABR || nextBandwidth > currBandwidth) && forwardBuffer >= bufferLowWaterLine) {
let logLine = `${sharedLogLine} as forwardBuffer >= bufferLowWaterLine (${forwardBuffer} >= ${bufferLowWaterLine})`;
if (bufferBasedABR) {
logLine += ` and next bandwidth > current bandwidth (${nextBandwidth} > ${currBandwidth})`;
}
log(logLine);
return true;
}
log(`not ${sharedLogLine} as no switching criteria met`);
return false;
};
/**
* the main playlist controller controller all interactons
* between playlists and segmentloaders. At this time this mainly
* involves a main playlist and a series of audio playlists
* if they are available
*
* @class PlaylistController
* @extends videojs.EventTarget
*/
class PlaylistController extends videojs.EventTarget {
constructor(options) {
super();
const {
src,
withCredentials,
tech,
bandwidth,
externVhs,
useCueTags,
playlistExclusionDuration,
enableLowInitialPlaylist,
sourceType,
cacheEncryptionKeys,
bufferBasedABR,
leastPixelDiffSelector,
captionServices
} = options;
if (!src) {
throw new Error('A non-empty playlist URL or JSON manifest string is required');
}
let {
maxPlaylistRetries
} = options;
if (maxPlaylistRetries === null || typeof maxPlaylistRetries === 'undefined') {
maxPlaylistRetries = Infinity;
}
Vhs$1 = externVhs;
this.bufferBasedABR = Boolean(bufferBasedABR);
this.leastPixelDiffSelector = Boolean(leastPixelDiffSelector);
this.withCredentials = withCredentials;
this.tech_ = tech;
this.vhs_ = tech.vhs;
this.player_ = options.player_;
this.sourceType_ = sourceType;
this.useCueTags_ = useCueTags;
this.playlistExclusionDuration = playlistExclusionDuration;
this.maxPlaylistRetries = maxPlaylistRetries;
this.enableLowInitialPlaylist = enableLowInitialPlaylist;
if (this.useCueTags_) {
this.cueTagsTrack_ = this.tech_.addTextTrack('metadata', 'ad-cues');
this.cueTagsTrack_.inBandMetadataTrackDispatchType = '';
}
this.requestOptions_ = {
withCredentials,
maxPlaylistRetries,
timeout: null
};
this.on('error', this.pauseLoading);
this.mediaTypes_ = createMediaTypes();
this.mediaSource = new window.MediaSource();
this.handleDurationChange_ = this.handleDurationChange_.bind(this);
this.handleSourceOpen_ = this.handleSourceOpen_.bind(this);
this.handleSourceEnded_ = this.handleSourceEnded_.bind(this);
this.mediaSource.addEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
this.mediaSource.addEventListener('sourceopen', this.handleSourceOpen_);
this.mediaSource.addEventListener('sourceended', this.handleSourceEnded_); // we don't have to handle sourceclose since dispose will handle termination of
// everything, and the MediaSource should not be detached without a proper disposal
this.seekable_ = createTimeRanges();
this.hasPlayed_ = false;
this.syncController_ = new SyncController(options);
this.segmentMetadataTrack_ = tech.addRemoteTextTrack({
kind: 'metadata',
label: 'segment-metadata'
}, false).track;
this.decrypter_ = new Decrypter();
this.sourceUpdater_ = new SourceUpdater(this.mediaSource);
this.inbandTextTracks_ = {};
this.timelineChangeController_ = new TimelineChangeController();
this.keyStatusMap_ = new Map();
const segmentLoaderSettings = {
vhs: this.vhs_,
parse708captions: options.parse708captions,
useDtsForTimestampOffset: options.useDtsForTimestampOffset,
captionServices,
mediaSource: this.mediaSource,
currentTime: this.tech_.currentTime.bind(this.tech_),
seekable: () => this.seekable(),
seeking: () => this.tech_.seeking(),
duration: () => this.duration(),
hasPlayed: () => this.hasPlayed_,
goalBufferLength: () => this.goalBufferLength(),
bandwidth,
syncController: this.syncController_,
decrypter: this.decrypter_,
sourceType: this.sourceType_,
inbandTextTracks: this.inbandTextTracks_,
cacheEncryptionKeys,
sourceUpdater: this.sourceUpdater_,
timelineChangeController: this.timelineChangeController_,
exactManifestTimings: options.exactManifestTimings,
addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
}; // The source type check not only determines whether a special DASH playlist loader
// should be used, but also covers the case where the provided src is a vhs-json
// manifest object (instead of a URL). In the case of vhs-json, the default
// PlaylistLoader should be used.
this.mainPlaylistLoader_ = this.sourceType_ === 'dash' ? new DashPlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
addMetadataToTextTrack: this.addMetadataToTextTrack.bind(this)
})) : new PlaylistLoader(src, this.vhs_, merge(this.requestOptions_, {
addDateRangesToTextTrack: this.addDateRangesToTextTrack_.bind(this)
}));
this.setupMainPlaylistLoaderListeners_(); // setup segment loaders
// combined audio/video or just video when alternate audio track is selected
this.mainSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
segmentMetadataTrack: this.segmentMetadataTrack_,
loaderType: 'main'
}), options); // alternate audio track
this.audioSegmentLoader_ = new SegmentLoader(merge(segmentLoaderSettings, {
loaderType: 'audio'
}), options);
this.subtitleSegmentLoader_ = new VTTSegmentLoader(merge(segmentLoaderSettings, {
loaderType: 'vtt',
featuresNativeTextTracks: this.tech_.featuresNativeTextTracks,
loadVttJs: () => new Promise((resolve, reject) => {
function onLoad() {
tech.off('vttjserror', onError);
resolve();
}
function onError() {
tech.off('vttjsloaded', onLoad);
reject();
}
tech.one('vttjsloaded', onLoad);
tech.one('vttjserror', onError); // safe to call multiple times, script will be loaded only once:
tech.addWebVttScript_();
})
}), options);
const getBandwidth = () => {
return this.mainSegmentLoader_.bandwidth;
};
this.contentSteeringController_ = new ContentSteeringController(this.vhs_.xhr, getBandwidth);
this.setupSegmentLoaderListeners_();
if (this.bufferBasedABR) {
this.mainPlaylistLoader_.one('loadedplaylist', () => this.startABRTimer_());
this.tech_.on('pause', () => this.stopABRTimer_());
this.tech_.on('play', () => this.startABRTimer_());
} // Create SegmentLoader stat-getters
// mediaRequests_
// mediaRequestsAborted_
// mediaRequestsTimedout_
// mediaRequestsErrored_
// mediaTransferDuration_
// mediaBytesTransferred_
// mediaAppends_
loaderStats.forEach(stat => {
this[stat + '_'] = sumLoaderStat.bind(this, stat);
});
this.logger_ = logger('pc');
this.triggeredFmp4Usage = false;
if (this.tech_.preload() === 'none') {
this.loadOnPlay_ = () => {
this.loadOnPlay_ = null;
this.mainPlaylistLoader_.load();
};
this.tech_.one('play', this.loadOnPlay_);
} else {
this.mainPlaylistLoader_.load();
}
this.timeToLoadedData__ = -1;
this.mainAppendsToLoadedData__ = -1;
this.audioAppendsToLoadedData__ = -1;
const event = this.tech_.preload() === 'none' ? 'play' : 'loadstart'; // start the first frame timer on loadstart or play (for preload none)
this.tech_.one(event, () => {
const timeToLoadedDataStart = Date.now();
this.tech_.one('loadeddata', () => {
this.timeToLoadedData__ = Date.now() - timeToLoadedDataStart;
this.mainAppendsToLoadedData__ = this.mainSegmentLoader_.mediaAppends;
this.audioAppendsToLoadedData__ = this.audioSegmentLoader_.mediaAppends;
});
});
}
mainAppendsToLoadedData_() {
return this.mainAppendsToLoadedData__;
}
audioAppendsToLoadedData_() {
return this.audioAppendsToLoadedData__;
}
appendsToLoadedData_() {
const main = this.mainAppendsToLoadedData_();
const audio = this.audioAppendsToLoadedData_();
if (main === -1 || audio === -1) {
return -1;
}
return main + audio;
}
timeToLoadedData_() {
return this.timeToLoadedData__;
}
/**
* Run selectPlaylist and switch to the new playlist if we should
*
* @param {string} [reason=abr] a reason for why the ABR check is made
* @private
*/
checkABR_(reason = 'abr') {
const nextPlaylist = this.selectPlaylist();
if (nextPlaylist && this.shouldSwitchToMedia_(nextPlaylist)) {
this.switchMedia_(nextPlaylist, reason);
}
}
switchMedia_(playlist, cause, delay) {
const oldMedia = this.media();
const oldId = oldMedia && (oldMedia.id || oldMedia.uri);
const newId = playlist && (playlist.id || playlist.uri);
if (oldId && oldId !== newId) {
this.logger_(`switch media ${oldId} -> ${newId} from ${cause}`);
const metadata = {
renditionInfo: {
id: newId,
bandwidth: playlist.attributes.BANDWIDTH,
resolution: playlist.attributes.RESOLUTION,
codecs: playlist.attributes.CODECS
},
cause
};
this.trigger({
type: 'renditionselected',
metadata
});
this.tech_.trigger({
type: 'usage',
name: `vhs-rendition-change-${cause}`
});
}
this.mainPlaylistLoader_.media(playlist, delay);
}
/**
* A function that ensures we switch our playlists inside of `mediaTypes`
* to match the current `serviceLocation` provided by the contentSteering controller.
* We want to check media types of `AUDIO`, `SUBTITLES`, and `CLOSED-CAPTIONS`.
*
* This should only be called on a DASH playback scenario while using content steering.
* This is necessary due to differences in how media in HLS manifests are generally tied to
* a video playlist, where in DASH that is not always the case.
*/
switchMediaForDASHContentSteering_() {
['AUDIO', 'SUBTITLES', 'CLOSED-CAPTIONS'].forEach(type => {
const mediaType = this.mediaTypes_[type];
const activeGroup = mediaType ? mediaType.activeGroup() : null;
const pathway = this.contentSteeringController_.getPathway();
if (activeGroup && pathway) {
// activeGroup can be an array or a single group
const mediaPlaylists = activeGroup.length ? activeGroup[0].playlists : activeGroup.playlists;
const dashMediaPlaylists = mediaPlaylists.filter(p => p.attributes.serviceLocation === pathway); // Switch the current active playlist to the correct CDN
if (dashMediaPlaylists.length) {
this.mediaTypes_[type].activePlaylistLoader.media(dashMediaPlaylists[0]);
}
}
});
}
/**
* Start a timer that periodically calls checkABR_
*
* @private
*/
startABRTimer_() {
this.stopABRTimer_();
this.abrTimer_ = window.setInterval(() => this.checkABR_(), 250);
}
/**
* Stop the timer that periodically calls checkABR_
*
* @private
*/
stopABRTimer_() {
// if we're scrubbing, we don't need to pause.
// This getter will be added to Video.js in version 7.11.
if (this.tech_.scrubbing && this.tech_.scrubbing()) {
return;
}
window.clearInterval(this.abrTimer_);
this.abrTimer_ = null;
}
/**
* Get a list of playlists for the currently selected audio playlist
*
* @return {Array} the array of audio playlists
*/
getAudioTrackPlaylists_() {
const main = this.main();
const defaultPlaylists = main && main.playlists || []; // if we don't have any audio groups then we can only
// assume that the audio tracks are contained in main
// playlist array, use that or an empty array.
if (!main || !main.mediaGroups || !main.mediaGroups.AUDIO) {
return defaultPlaylists;
}
const AUDIO = main.mediaGroups.AUDIO;
const groupKeys = Object.keys(AUDIO);
let track; // get the current active track
if (Object.keys(this.mediaTypes_.AUDIO.groups).length) {
track = this.mediaTypes_.AUDIO.activeTrack(); // or get the default track from main if mediaTypes_ isn't setup yet
} else {
// default group is `main` or just the first group.
const defaultGroup = AUDIO.main || groupKeys.length && AUDIO[groupKeys[0]];
for (const label in defaultGroup) {
if (defaultGroup[label].default) {
track = {
label
};
break;
}
}
} // no active track no playlists.
if (!track) {
return defaultPlaylists;
}
const playlists = []; // get all of the playlists that are possible for the
// active track.
for (const group in AUDIO) {
if (AUDIO[group][track.label]) {
const properties = AUDIO[group][track.label];
if (properties.playlists && properties.playlists.length) {
playlists.push.apply(playlists, properties.playlists);
} else if (properties.uri) {
playlists.push(properties);
} else if (main.playlists.length) {
// if an audio group does not have a uri
// see if we have main playlists that use it as a group.
// if we do then add those to the playlists list.
for (let i = 0; i < main.playlists.length; i++) {
const playlist = main.playlists[i];
if (playlist.attributes && playlist.attributes.AUDIO && playlist.attributes.AUDIO === group) {
playlists.push(playlist);
}
}
}
}
}
if (!playlists.length) {
return defaultPlaylists;
}
return playlists;
}
/**
* Register event handlers on the main playlist loader. A helper
* function for construction time.
*
* @private
*/
setupMainPlaylistLoaderListeners_() {
this.mainPlaylistLoader_.on('loadedmetadata', () => {
const media = this.mainPlaylistLoader_.media();
const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
// timeout the request.
if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
this.requestOptions_.timeout = 0;
} else {
this.requestOptions_.timeout = requestTimeout;
} // if this isn't a live video and preload permits, start
// downloading segments
if (media.endList && this.tech_.preload() !== 'none') {
this.mainSegmentLoader_.playlist(media, this.requestOptions_);
this.mainSegmentLoader_.load();
}
setupMediaGroups({
sourceType: this.sourceType_,
segmentLoaders: {
AUDIO: this.audioSegmentLoader_,
SUBTITLES: this.subtitleSegmentLoader_,
main: this.mainSegmentLoader_
},
tech: this.tech_,
requestOptions: this.requestOptions_,
mainPlaylistLoader: this.mainPlaylistLoader_,
vhs: this.vhs_,
main: this.main(),
mediaTypes: this.mediaTypes_,
excludePlaylist: this.excludePlaylist.bind(this)
});
this.triggerPresenceUsage_(this.main(), media);
this.setupFirstPlay();
if (!this.mediaTypes_.AUDIO.activePlaylistLoader || this.mediaTypes_.AUDIO.activePlaylistLoader.media()) {
this.trigger('selectedinitialmedia');
} else {
// We must wait for the active audio playlist loader to
// finish setting up before triggering this event so the
// representations API and EME setup is correct
this.mediaTypes_.AUDIO.activePlaylistLoader.one('loadedmetadata', () => {
this.trigger('selectedinitialmedia');
});
}
});
this.mainPlaylistLoader_.on('loadedplaylist', () => {
if (this.loadOnPlay_) {
this.tech_.off('play', this.loadOnPlay_);
}
let updatedPlaylist = this.mainPlaylistLoader_.media();
if (!updatedPlaylist) {
// Add content steering listeners on first load and init.
this.attachContentSteeringListeners_();
this.initContentSteeringController_(); // exclude any variants that are not supported by the browser before selecting
// an initial media as the playlist selectors do not consider browser support
this.excludeUnsupportedVariants_();
let selectedMedia;
if (this.enableLowInitialPlaylist) {
selectedMedia = this.selectInitialPlaylist();
}
if (!selectedMedia) {
selectedMedia = this.selectPlaylist();
}
if (!selectedMedia || !this.shouldSwitchToMedia_(selectedMedia)) {
return;
}
this.initialMedia_ = selectedMedia;
this.switchMedia_(this.initialMedia_, 'initial'); // Under the standard case where a source URL is provided, loadedplaylist will
// fire again since the playlist will be requested. In the case of vhs-json
// (where the manifest object is provided as the source), when the media
// playlist's `segments` list is already available, a media playlist won't be
// requested, and loadedplaylist won't fire again, so the playlist handler must be
// called on its own here.
const haveJsonSource = this.sourceType_ === 'vhs-json' && this.initialMedia_.segments;
if (!haveJsonSource) {
return;
}
updatedPlaylist = this.initialMedia_;
}
this.handleUpdatedMediaPlaylist(updatedPlaylist);
});
this.mainPlaylistLoader_.on('error', () => {
const error = this.mainPlaylistLoader_.error;
this.excludePlaylist({
playlistToExclude: error.playlist,
error
});
});
this.mainPlaylistLoader_.on('mediachanging', () => {
this.mainSegmentLoader_.abort();
this.mainSegmentLoader_.pause();
});
this.mainPlaylistLoader_.on('mediachange', () => {
const media = this.mainPlaylistLoader_.media();
const requestTimeout = media.targetDuration * 1.5 * 1000; // If we don't have any more available playlists, we don't want to
// timeout the request.
if (isLowestEnabledRendition(this.mainPlaylistLoader_.main, this.mainPlaylistLoader_.media())) {
this.requestOptions_.timeout = 0;
} else {
this.requestOptions_.timeout = requestTimeout;
}
if (this.sourceType_ === 'dash') {
// we don't want to re-request the same hls playlist right after it was changed
this.mainPlaylistLoader_.load();
} // TODO: Create a new event on the PlaylistLoader that signals
// that the segments have changed in some way and use that to
// update the SegmentLoader instead of doing it twice here and
// on `loadedplaylist`
this.mainSegmentLoader_.pause();
this.mainSegmentLoader_.playlist(media, this.requestOptions_);
if (this.waitingForFastQualityPlaylistReceived_) {
this.runFastQualitySwitch_();
} else {
this.mainSegmentLoader_.load();
}
this.tech_.trigger({
type: 'mediachange',
bubbles: true
});
});
this.mainPlaylistLoader_.on('playlistunchanged', () => {
const updatedPlaylist = this.mainPlaylistLoader_.media(); // ignore unchanged playlists that have already been
// excluded for not-changing. We likely just have a really slowly updating
// playlist.
if (updatedPlaylist.lastExcludeReason_ === 'playlist-unchanged') {
return;
}
const playlistOutdated = this.stuckAtPlaylistEnd_(updatedPlaylist);
if (playlistOutdated) {
// Playlist has stopped updating and we're stuck at its end. Try to
// exclude it and switch to another playlist in the hope that that
// one is updating (and give the player a chance to re-adjust to the
// safe live point).
this.excludePlaylist({
error: {
message: 'Playlist no longer updating.',
reason: 'playlist-unchanged'
}
}); // useful for monitoring QoS
this.tech_.trigger('playliststuck');
}
});
this.mainPlaylistLoader_.on('renditiondisabled', () => {
this.tech_.trigger({
type: 'usage',
name: 'vhs-rendition-disabled'
});
});
this.mainPlaylistLoader_.on('renditionenabled', () => {
this.tech_.trigger({
type: 'usage',
name: 'vhs-rendition-enabled'
});
});
const playlistLoaderEvents = ['manifestrequeststart', 'manifestrequestcomplete', 'manifestparsestart', 'manifestparsecomplete', 'playlistrequeststart', 'playlistrequestcomplete', 'playlistparsestart', 'playlistparsecomplete', 'renditiondisabled', 'renditionenabled'];
playlistLoaderEvents.forEach(eventName => {
this.mainPlaylistLoader_.on(eventName, metadata => {
// trigger directly on the player to ensure early events are fired.
this.player_.trigger(_extends$1({}, metadata));
});
});
}
/**
* Given an updated media playlist (whether it was loaded for the first time, or
* refreshed for live playlists), update any relevant properties and state to reflect
* changes in the media that should be accounted for (e.g., cues and duration).
*
* @param {Object} updatedPlaylist the updated media playlist object
*
* @private
*/
handleUpdatedMediaPlaylist(updatedPlaylist) {
if (this.useCueTags_) {
this.updateAdCues_(updatedPlaylist);
} // TODO: Create a new event on the PlaylistLoader that signals
// that the segments have changed in some way and use that to
// update the SegmentLoader instead of doing it twice here and
// on `mediachange`
this.mainSegmentLoader_.pause();
this.mainSegmentLoader_.playlist(updatedPlaylist, this.requestOptions_);
if (this.waitingForFastQualityPlaylistReceived_) {
this.runFastQualitySwitch_();
}
this.updateDuration(!updatedPlaylist.endList); // If the player isn't paused, ensure that the segment loader is running,
// as it is possible that it was temporarily stopped while waiting for
// a playlist (e.g., in case the playlist errored and we re-requested it).
if (!this.tech_.paused()) {
this.mainSegmentLoader_.load();
if (this.audioSegmentLoader_) {
this.audioSegmentLoader_.load();
}
}
}
/**
* A helper function for triggerring presence usage events once per source
*
* @private
*/
triggerPresenceUsage_(main, media) {
const mediaGroups = main.mediaGroups || {};
let defaultDemuxed = true;
const audioGroupKeys = Object.keys(mediaGroups.AUDIO);
for (const mediaGroup in mediaGroups.AUDIO) {
for (const label in mediaGroups.AUDIO[mediaGroup]) {
const properties = mediaGroups.AUDIO[mediaGroup][label];
if (!properties.uri) {
defaultDemuxed = false;
}
}
}
if (defaultDemuxed) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-demuxed'
});
}
if (Object.keys(mediaGroups.SUBTITLES).length) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-webvtt'
});
}
if (Vhs$1.Playlist.isAes(media)) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-aes'
});
}
if (audioGroupKeys.length && Object.keys(mediaGroups.AUDIO[audioGroupKeys[0]]).length > 1) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-alternate-audio'
});
}
if (this.useCueTags_) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-playlist-cue-tags'
});
}
}
shouldSwitchToMedia_(nextPlaylist) {
const currentPlaylist = this.mainPlaylistLoader_.media() || this.mainPlaylistLoader_.pendingMedia_;
const currentTime = this.tech_.currentTime();
const bufferLowWaterLine = this.bufferLowWaterLine();
const bufferHighWaterLine = this.bufferHighWaterLine();
const buffered = this.tech_.buffered();
return shouldSwitchToMedia({
buffered,
currentTime,
currentPlaylist,
nextPlaylist,
bufferLowWaterLine,
bufferHighWaterLine,
duration: this.duration(),
bufferBasedABR: this.bufferBasedABR,
log: this.logger_
});
}
/**
* Register event handlers on the segment loaders. A helper function
* for construction time.
*
* @private
*/
setupSegmentLoaderListeners_() {
this.mainSegmentLoader_.on('bandwidthupdate', () => {
// Whether or not buffer based ABR or another ABR is used, on a bandwidth change it's
// useful to check to see if a rendition switch should be made.
this.checkABR_('bandwidthupdate');
this.tech_.trigger('bandwidthupdate');
});
this.mainSegmentLoader_.on('timeout', () => {
if (this.bufferBasedABR) {
// If a rendition change is needed, then it would've be done on `bandwidthupdate`.
// Here the only consideration is that for buffer based ABR there's no guarantee
// of an immediate switch (since the bandwidth is averaged with a timeout
// bandwidth value of 1), so force a load on the segment loader to keep it going.
this.mainSegmentLoader_.load();
}
}); // `progress` events are not reliable enough of a bandwidth measure to trigger buffer
// based ABR.
if (!this.bufferBasedABR) {
this.mainSegmentLoader_.on('progress', () => {
this.trigger('progress');
});
}
this.mainSegmentLoader_.on('error', () => {
const error = this.mainSegmentLoader_.error();
this.excludePlaylist({
playlistToExclude: error.playlist,
error
});
});
this.mainSegmentLoader_.on('appenderror', () => {
this.error = this.mainSegmentLoader_.error_;
this.trigger('error');
});
this.mainSegmentLoader_.on('syncinfoupdate', () => {
this.onSyncInfoUpdate_();
});
this.mainSegmentLoader_.on('timestampoffset', () => {
this.tech_.trigger({
type: 'usage',
name: 'vhs-timestamp-offset'
});
});
this.audioSegmentLoader_.on('syncinfoupdate', () => {
this.onSyncInfoUpdate_();
});
this.audioSegmentLoader_.on('appenderror', () => {
this.error = this.audioSegmentLoader_.error_;
this.trigger('error');
});
this.mainSegmentLoader_.on('ended', () => {
this.logger_('main segment loader ended');
this.onEndOfStream();
}); // In DASH, there is the possibility of the video segment and the audio segment
// at a current time to be on different timelines. When this occurs, the player
// forwards playback to a point where these two segment types are back on the same
// timeline. This time will be just after the end of the audio segment that is on
// a previous timeline.
if (this.sourceType_ === 'dash') {
this.timelineChangeController_.on('audioTimelineBehind', () => {
const segmentInfo = this.audioSegmentLoader_.pendingSegment_;
if (!segmentInfo || !segmentInfo.segment || !segmentInfo.segment.syncInfo) {
return;
} // Update the current time to just after the faulty audio segment.
// This moves playback to a spot where both audio and video segments
// are on the same timeline.
const newTime = segmentInfo.segment.syncInfo.end + 0.01;
this.tech_.setCurrentTime(newTime);
});
}
this.mainSegmentLoader_.on('earlyabort', event => {
// never try to early abort with the new ABR algorithm
if (this.bufferBasedABR) {
return;
}
this.delegateLoaders_('all', ['abort']);
this.excludePlaylist({
error: {
message: 'Aborted early because there isn\'t enough bandwidth to complete ' + 'the request without rebuffering.'
},
playlistExclusionDuration: ABORT_EARLY_EXCLUSION_SECONDS
});
});
const updateCodecs = () => {
if (!this.sourceUpdater_.hasCreatedSourceBuffers()) {
return this.tryToCreateSourceBuffers_();
}
const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
if (!codecs) {
return;
}
this.sourceUpdater_.addOrChangeSourceBuffers(codecs);
};
this.mainSegmentLoader_.on('trackinfo', updateCodecs);
this.audioSegmentLoader_.on('trackinfo', updateCodecs);
this.mainSegmentLoader_.on('fmp4', () => {
if (!this.triggeredFmp4Usage) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-fmp4'
});
this.triggeredFmp4Usage = true;
}
});
this.audioSegmentLoader_.on('fmp4', () => {
if (!this.triggeredFmp4Usage) {
this.tech_.trigger({
type: 'usage',
name: 'vhs-fmp4'
});
this.triggeredFmp4Usage = true;
}
});
this.audioSegmentLoader_.on('ended', () => {
this.logger_('audioSegmentLoader ended');
this.onEndOfStream();
});
const segmentLoaderEvents = ['segmentselected', 'segmentloadstart', 'segmentloaded', 'segmentkeyloadstart', 'segmentkeyloadcomplete', 'segmentdecryptionstart', 'segmentdecryptioncomplete', 'segmenttransmuxingstart', 'segmenttransmuxingcomplete', 'segmenttransmuxingtrackinfoavailable', 'segmenttransmuxingtiminginfoavailable', 'segmentappendstart', 'appendsdone', 'bandwidthupdated', 'timelinechange', 'codecschange'];
segmentLoaderEvents.forEach(eventName => {
this.mainSegmentLoader_.on(eventName, metadata => {
this.player_.trigger(_extends$1({}, metadata));
});
this.audioSegmentLoader_.on(eventName, metadata => {
this.player_.trigger(_extends$1({}, metadata));
});
this.subtitleSegmentLoader_.on(eventName, metadata => {
this.player_.trigger(_extends$1({}, metadata));
});
});
}
mediaSecondsLoaded_() {
return Math.max(this.audioSegmentLoader_.mediaSecondsLoaded + this.mainSegmentLoader_.mediaSecondsLoaded);
}
/**
* Call load on our SegmentLoaders
*/
load() {
this.mainSegmentLoader_.load();
if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
this.audioSegmentLoader_.load();
}
if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
this.subtitleSegmentLoader_.load();
}
}
/**
* Re-tune playback quality level for the current player
* conditions. This method will perform destructive actions like removing
* already buffered content in order to readjust the currently active
* playlist quickly. This is good for manual quality changes
*
* @private
*/
fastQualityChange_(media = this.selectPlaylist()) {
if (media && media === this.mainPlaylistLoader_.media()) {
this.logger_('skipping fastQualityChange because new media is same as old');
return;
}
this.switchMedia_(media, 'fast-quality'); // we would like to avoid race condition when we call fastQuality,
// reset everything and start loading segments from prev segments instead of new because new playlist is not received yet
this.waitingForFastQualityPlaylistReceived_ = true;
}
runFastQualitySwitch_() {
this.waitingForFastQualityPlaylistReceived_ = false; // Delete all buffered data to allow an immediate quality switch.
this.mainSegmentLoader_.pause();
this.mainSegmentLoader_.resetEverything(() => {
this.mainSegmentLoader_.load();
}); // don't need to reset audio as it is reset when media changes
}
/**
* Begin playback.
*/
play() {
if (this.setupFirstPlay()) {
return;
}
if (this.tech_.ended()) {
this.tech_.setCurrentTime(0);
}
if (this.hasPlayed_) {
this.load();
}
const seekable = this.tech_.seekable(); // if the viewer has paused and we fell out of the live window,
// seek forward to the live point
if (this.tech_.duration() === Infinity) {
if (this.tech_.currentTime() < seekable.start(0)) {
return this.tech_.setCurrentTime(seekable.end(seekable.length - 1));
}
}
}
/**
* Seek to the latest media position if this is a live video and the
* player and video are loaded and initialized.
*/
setupFirstPlay() {
const media = this.mainPlaylistLoader_.media(); // Check that everything is ready to begin buffering for the first call to play
// If 1) there is no active media
// 2) the player is paused
// 3) the first play has already been setup
// then exit early
if (!media || this.tech_.paused() || this.hasPlayed_) {
return false;
} // when the video is a live stream and/or has a start time
if (!media.endList || media.start) {
const seekable = this.seekable();
if (!seekable.length) {
// without a seekable range, the player cannot seek to begin buffering at the
// live or start point
return false;
}
const seekableEnd = seekable.end(0);
let startPoint = seekableEnd;
if (media.start) {
const offset = media.start.timeOffset;
if (offset < 0) {
startPoint = Math.max(seekableEnd + offset, seekable.start(0));
} else {
startPoint = Math.min(seekableEnd, offset);
}
} // trigger firstplay to inform the source handler to ignore the next seek event
this.trigger('firstplay'); // seek to the live point
this.tech_.setCurrentTime(startPoint);
}
this.hasPlayed_ = true; // we can begin loading now that everything is ready
this.load();
return true;
}
/**
* handle the sourceopen event on the MediaSource
*
* @private
*/
handleSourceOpen_() {
// Only attempt to create the source buffer if none already exist.
// handleSourceOpen is also called when we are "re-opening" a source buffer
// after `endOfStream` has been called (in response to a seek for instance)
this.tryToCreateSourceBuffers_(); // if autoplay is enabled, begin playback. This is duplicative of
// code in video.js but is required because play() must be invoked
// *after* the media source has opened.
if (this.tech_.autoplay()) {
const playPromise = this.tech_.play(); // Catch/silence error when a pause interrupts a play request
// on browsers which return a promise
if (typeof playPromise !== 'undefined' && typeof playPromise.then === 'function') {
playPromise.then(null, e => {});
}
}
this.trigger('sourceopen');
}
/**
* handle the sourceended event on the MediaSource
*
* @private
*/
handleSourceEnded_() {
if (!this.inbandTextTracks_.metadataTrack_) {
return;
}
const cues = this.inbandTextTracks_.metadataTrack_.cues;
if (!cues || !cues.length) {
return;
}
const duration = this.duration();
cues[cues.length - 1].endTime = isNaN(duration) || Math.abs(duration) === Infinity ? Number.MAX_VALUE : duration;
}
/**
* handle the durationchange event on the MediaSource
*
* @private
*/
handleDurationChange_() {
this.tech_.trigger('durationchange');
}
/**
* Calls endOfStream on the media source when all active stream types have called
* endOfStream
*
* @param {string} streamType
* Stream type of the segment loader that called endOfStream
* @private
*/
onEndOfStream() {
let isEndOfStream = this.mainSegmentLoader_.ended_;
if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
const mainMediaInfo = this.mainSegmentLoader_.getCurrentMediaInfo_(); // if the audio playlist loader exists, then alternate audio is active
if (!mainMediaInfo || mainMediaInfo.hasVideo) {
// if we do not know if the main segment loader contains video yet or if we
// definitively know the main segment loader contains video, then we need to wait
// for both main and audio segment loaders to call endOfStream
isEndOfStream = isEndOfStream && this.audioSegmentLoader_.ended_;
} else {
// otherwise just rely on the audio loader
isEndOfStream = this.audioSegmentLoader_.ended_;
}
}
if (!isEndOfStream) {
return;
}
this.stopABRTimer_();
this.sourceUpdater_.endOfStream();
}
/**
* Check if a playlist has stopped being updated
*
* @param {Object} playlist the media playlist object
* @return {boolean} whether the playlist has stopped being updated or not
*/
stuckAtPlaylistEnd_(playlist) {
const seekable = this.seekable();
if (!seekable.length) {
// playlist doesn't have enough information to determine whether we are stuck
return false;
}
const expired = this.syncController_.getExpiredTime(playlist, this.duration());
if (expired === null) {
return false;
} // does not use the safe live end to calculate playlist end, since we
// don't want to say we are stuck while there is still content
const absolutePlaylistEnd = Vhs$1.Playlist.playlistEnd(playlist, expired);
const currentTime = this.tech_.currentTime();
const buffered = this.tech_.buffered();
if (!buffered.length) {
// return true if the playhead reached the absolute end of the playlist
return absolutePlaylistEnd - currentTime <= SAFE_TIME_DELTA;
}
const bufferedEnd = buffered.end(buffered.length - 1); // return true if there is too little buffer left and buffer has reached absolute
// end of playlist
return bufferedEnd - currentTime <= SAFE_TIME_DELTA && absolutePlaylistEnd - bufferedEnd <= SAFE_TIME_DELTA;
}
/**
* Exclude a playlist for a set amount of time, making it unavailable for selection by
* the rendition selection algorithm, then force a new playlist (rendition) selection.
*
* @param {Object=} playlistToExclude
* the playlist to exclude, defaults to the currently selected playlist
* @param {Object=} error
* an optional error
* @param {number=} playlistExclusionDuration
* an optional number of seconds to exclude the playlist
*/
excludePlaylist({
playlistToExclude = this.mainPlaylistLoader_.media(),
error = {},
playlistExclusionDuration
}) {
// If the `error` was generated by the playlist loader, it will contain
// the playlist we were trying to load (but failed) and that should be
// excluded instead of the currently selected playlist which is likely
// out-of-date in this scenario
playlistToExclude = playlistToExclude || this.mainPlaylistLoader_.media();
playlistExclusionDuration = playlistExclusionDuration || error.playlistExclusionDuration || this.playlistExclusionDuration; // If there is no current playlist, then an error occurred while we were
// trying to load the main OR while we were disposing of the tech
if (!playlistToExclude) {
this.error = error;
if (this.mediaSource.readyState !== 'open') {
this.trigger('error');
} else {
this.sourceUpdater_.endOfStream('network');
}
return;
}
playlistToExclude.playlistErrors_++;
const playlists = this.mainPlaylistLoader_.main.playlists;
const enabledPlaylists = playlists.filter(isEnabled);
const isFinalRendition = enabledPlaylists.length === 1 && enabledPlaylists[0] === playlistToExclude; // Don't exclude the only playlist unless it was excluded
// forever
if (playlists.length === 1 && playlistExclusionDuration !== Infinity) {
videojs.log.warn(`Problem encountered with playlist ${playlistToExclude.id}. ` + 'Trying again since it is the only playlist.');
this.tech_.trigger('retryplaylist'); // if this is a final rendition, we should delay
return this.mainPlaylistLoader_.load(isFinalRendition);
}
if (isFinalRendition) {
// If we're content steering, try other pathways.
if (this.main().contentSteering) {
const pathway = this.pathwayAttribute_(playlistToExclude); // Ignore at least 1 steering manifest refresh.
const reIncludeDelay = this.contentSteeringController_.steeringManifest.ttl * 1000;
this.contentSteeringController_.excludePathway(pathway);
this.excludeThenChangePathway_();
setTimeout(() => {
this.contentSteeringController_.addAvailablePathway(pathway);
}, reIncludeDelay);
return;
} // Since we're on the final non-excluded playlist, and we're about to exclude
// it, instead of erring the player or retrying this playlist, clear out the current
// exclusion list. This allows other playlists to be attempted in case any have been
// fixed.
let reincluded = false;
playlists.forEach(playlist => {
// skip current playlist which is about to be excluded
if (playlist === playlistToExclude) {
return;
}
const excludeUntil = playlist.excludeUntil; // a playlist cannot be reincluded if it wasn't excluded to begin with.
if (typeof excludeUntil !== 'undefined' && excludeUntil !== Infinity) {
reincluded = true;
delete playlist.excludeUntil;
}
});
if (reincluded) {
videojs.log.warn('Removing other playlists from the exclusion list because the last ' + 'rendition is about to be excluded.'); // Technically we are retrying a playlist, in that we are simply retrying a previous
// playlist. This is needed for users relying on the retryplaylist event to catch a
// case where the player might be stuck and looping through "dead" playlists.
this.tech_.trigger('retryplaylist');
}
} // Exclude this playlist
let excludeUntil;
if (playlistToExclude.playlistErrors_ > this.maxPlaylistRetries) {
excludeUntil = Infinity;
} else {
excludeUntil = Date.now() + playlistExclusionDuration * 1000;
}
playlistToExclude.excludeUntil = excludeUntil;
if (error.reason) {
playlistToExclude.lastExcludeReason_ = error.reason;
}
this.tech_.trigger('excludeplaylist');
this.tech_.trigger({
type: 'usage',
name: 'vhs-rendition-excluded'
}); // TODO: only load a new playlist if we're excluding the current playlist
// If this function was called with a playlist that's not the current active playlist
// (e.g., media().id !== playlistToExclude.id),
// then a new playlist should not be selected and loaded, as there's nothing wrong with the current playlist.
const nextPlaylist = this.selectPlaylist();
if (!nextPlaylist) {
this.error = 'Playback cannot continue. No available working or supported playlists.';
this.trigger('error');
return;
}
const logFn = error.internal ? this.logger_ : videojs.log.warn;
const errorMessage = error.message ? ' ' + error.message : '';
logFn(`${error.internal ? 'Internal problem' : 'Problem'} encountered with playlist ${playlistToExclude.id}.` + `${errorMessage} Switching to playlist ${nextPlaylist.id}.`); // if audio group changed reset audio loaders
if (nextPlaylist.attributes.AUDIO !== playlistToExclude.attributes.AUDIO) {
this.delegateLoaders_('audio', ['abort', 'pause']);
} // if subtitle group changed reset subtitle loaders
if (nextPlaylist.attributes.SUBTITLES !== playlistToExclude.attributes.SUBTITLES) {
this.delegateLoaders_('subtitle', ['abort', 'pause']);
}
this.delegateLoaders_('main', ['abort', 'pause']);
const delayDuration = nextPlaylist.targetDuration / 2 * 1000 || 5 * 1000;
const shouldDelay = typeof nextPlaylist.lastRequest === 'number' && Date.now() - nextPlaylist.lastRequest <= delayDuration; // delay if it's a final rendition or if the last refresh is sooner than half targetDuration
return this.switchMedia_(nextPlaylist, 'exclude', isFinalRendition || shouldDelay);
}
/**
* Pause all segment/playlist loaders
*/
pauseLoading() {
this.delegateLoaders_('all', ['abort', 'pause']);
this.stopABRTimer_();
}
/**
* Call a set of functions in order on playlist loaders, segment loaders,
* or both types of loaders.
*
* @param {string} filter
* Filter loaders that should call fnNames using a string. Can be:
* * all - run on all loaders
* * audio - run on all audio loaders
* * subtitle - run on all subtitle loaders
* * main - run on the main loaders
*
* @param {Array|string} fnNames
* A string or array of function names to call.
*/
delegateLoaders_(filter, fnNames) {
const loaders = [];
const dontFilterPlaylist = filter === 'all';
if (dontFilterPlaylist || filter === 'main') {
loaders.push(this.mainPlaylistLoader_);
}
const mediaTypes = [];
if (dontFilterPlaylist || filter === 'audio') {
mediaTypes.push('AUDIO');
}
if (dontFilterPlaylist || filter === 'subtitle') {
mediaTypes.push('CLOSED-CAPTIONS');
mediaTypes.push('SUBTITLES');
}
mediaTypes.forEach(mediaType => {
const loader = this.mediaTypes_[mediaType] && this.mediaTypes_[mediaType].activePlaylistLoader;
if (loader) {
loaders.push(loader);
}
});
['main', 'audio', 'subtitle'].forEach(name => {
const loader = this[`${name}SegmentLoader_`];
if (loader && (filter === name || filter === 'all')) {
loaders.push(loader);
}
});
loaders.forEach(loader => fnNames.forEach(fnName => {
if (typeof loader[fnName] === 'function') {
loader[fnName]();
}
}));
}
/**
* set the current time on all segment loaders
*
* @param {TimeRange} currentTime the current time to set
* @return {TimeRange} the current time
*/
setCurrentTime(currentTime) {
const buffered = findRange(this.tech_.buffered(), currentTime);
if (!(this.mainPlaylistLoader_ && this.mainPlaylistLoader_.media())) {
// return immediately if the metadata is not ready yet
return 0;
} // it's clearly an edge-case but don't thrown an error if asked to
// seek within an empty playlist
if (!this.mainPlaylistLoader_.media().segments) {
return 0;
} // if the seek location is already buffered, continue buffering as usual
if (buffered && buffered.length) {
return currentTime;
} // cancel outstanding requests so we begin buffering at the new
// location
this.mainSegmentLoader_.pause();
this.mainSegmentLoader_.resetEverything();
if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
this.audioSegmentLoader_.pause();
this.audioSegmentLoader_.resetEverything();
}
if (this.mediaTypes_.SUBTITLES.activePlaylistLoader) {
this.subtitleSegmentLoader_.pause();
this.subtitleSegmentLoader_.resetEverything();
} // start segment loader loading in case they are paused
this.load();
}
/**
* get the current duration
*
* @return {TimeRange} the duration
*/
duration() {
if (!this.mainPlaylistLoader_) {
return 0;
}
const media = this.mainPlaylistLoader_.media();
if (!media) {
// no playlists loaded yet, so can't determine a duration
return 0;
} // Don't rely on the media source for duration in the case of a live playlist since
// setting the native MediaSource's duration to infinity ends up with consequences to
// seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
//
// This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
// however, few browsers have support for setLiveSeekableRange()
// https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
//
// Until a time when the duration of the media source can be set to infinity, and a
// seekable range specified across browsers, just return Infinity.
if (!media.endList) {
return Infinity;
} // Since this is a VOD video, it is safe to rely on the media source's duration (if
// available). If it's not available, fall back to a playlist-calculated estimate.
if (this.mediaSource) {
return this.mediaSource.duration;
}
return Vhs$1.Playlist.duration(media);
}
/**
* check the seekable range
*
* @return {TimeRange} the seekable range
*/
seekable() {
return this.seekable_;
}
onSyncInfoUpdate_() {
let audioSeekable; // TODO check for creation of both source buffers before updating seekable
//
// A fix was made to this function where a check for
// this.sourceUpdater_.hasCreatedSourceBuffers
// was added to ensure that both source buffers were created before seekable was
// updated. However, it originally had a bug where it was checking for a true and
// returning early instead of checking for false. Setting it to check for false to
// return early though created other issues. A call to play() would check for seekable
// end without verifying that a seekable range was present. In addition, even checking
// for that didn't solve some issues, as handleFirstPlay is sometimes worked around
// due to a media update calling load on the segment loaders, skipping a seek to live,
// thereby starting live streams at the beginning of the stream rather than at the end.
//
// This conditional should be fixed to wait for the creation of two source buffers at
// the same time as the other sections of code are fixed to properly seek to live and
// not throw an error due to checking for a seekable end when no seekable range exists.
//
// For now, fall back to the older behavior, with the understanding that the seekable
// range may not be completely correct, leading to a suboptimal initial live point.
if (!this.mainPlaylistLoader_) {
return;
}
let media = this.mainPlaylistLoader_.media();
if (!media) {
return;
}
let expired = this.syncController_.getExpiredTime(media, this.duration());
if (expired === null) {
// not enough information to update seekable
return;
}
const main = this.mainPlaylistLoader_.main;
const mainSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
if (mainSeekable.length === 0) {
return;
}
if (this.mediaTypes_.AUDIO.activePlaylistLoader) {
media = this.mediaTypes_.AUDIO.activePlaylistLoader.media();
expired = this.syncController_.getExpiredTime(media, this.duration());
if (expired === null) {
return;
}
audioSeekable = Vhs$1.Playlist.seekable(media, expired, Vhs$1.Playlist.liveEdgeDelay(main, media));
if (audioSeekable.length === 0) {
return;
}
}
let oldEnd;
let oldStart;
if (this.seekable_ && this.seekable_.length) {
oldEnd = this.seekable_.end(0);
oldStart = this.seekable_.start(0);
}
if (!audioSeekable) {
// seekable has been calculated based on buffering video data so it
// can be returned directly
this.seekable_ = mainSeekable;
} else if (audioSeekable.start(0) > mainSeekable.end(0) || mainSeekable.start(0) > audioSeekable.end(0)) {
// seekables are pretty far off, rely on main
this.seekable_ = mainSeekable;
} else {
this.seekable_ = createTimeRanges([[audioSeekable.start(0) > mainSeekable.start(0) ? audioSeekable.start(0) : mainSeekable.start(0), audioSeekable.end(0) < mainSeekable.end(0) ? audioSeekable.end(0) : mainSeekable.end(0)]]);
} // seekable is the same as last time
if (this.seekable_ && this.seekable_.length) {
if (this.seekable_.end(0) === oldEnd && this.seekable_.start(0) === oldStart) {
return;
}
}
this.logger_(`seekable updated [${printableRange(this.seekable_)}]`);
const metadata = {
seekableRanges: this.seekable_
};
this.trigger({
type: 'seekablerangeschanged',
metadata
});
this.tech_.trigger('seekablechanged');
}
/**
* Update the player duration
*/
updateDuration(isLive) {
if (this.updateDuration_) {
this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
this.updateDuration_ = null;
}
if (this.mediaSource.readyState !== 'open') {
this.updateDuration_ = this.updateDuration.bind(this, isLive);
this.mediaSource.addEventListener('sourceopen', this.updateDuration_);
return;
}
if (isLive) {
const seekable = this.seekable();
if (!seekable.length) {
return;
} // Even in the case of a live playlist, the native MediaSource's duration should not
// be set to Infinity (even though this would be expected for a live playlist), since
// setting the native MediaSource's duration to infinity ends up with consequences to
// seekable behavior. See https://github.com/w3c/media-source/issues/5 for details.
//
// This is resolved in the spec by https://github.com/w3c/media-source/pull/92,
// however, few browsers have support for setLiveSeekableRange()
// https://developer.mozilla.org/en-US/docs/Web/API/MediaSource/setLiveSeekableRange
//
// Until a time when the duration of the media source can be set to infinity, and a
// seekable range specified across browsers, the duration should be greater than or
// equal to the last possible seekable value.
// MediaSource duration starts as NaN
// It is possible (and probable) that this case will never be reached for many
// sources, since the MediaSource reports duration as the highest value without
// accounting for timestamp offset. For example, if the timestamp offset is -100 and
// we buffered times 0 to 100 with real times of 100 to 200, even though current
// time will be between 0 and 100, the native media source may report the duration
// as 200. However, since we report duration separate from the media source (as
// Infinity), and as long as the native media source duration value is greater than
// our reported seekable range, seeks will work as expected. The large number as
// duration for live is actually a strategy used by some players to work around the
// issue of live seekable ranges cited above.
if (isNaN(this.mediaSource.duration) || this.mediaSource.duration < seekable.end(seekable.length - 1)) {
this.sourceUpdater_.setDuration(seekable.end(seekable.length - 1));
}
return;
}
const buffered = this.tech_.buffered();
let duration = Vhs$1.Playlist.duration(this.mainPlaylistLoader_.media());
if (buffered.length > 0) {
duration = Math.max(duration, buffered.end(buffered.length - 1));
}
if (this.mediaSource.duration !== duration) {
this.sourceUpdater_.setDuration(duration);
}
}
/**
* dispose of the PlaylistController and everything
* that it controls
*/
dispose() {
this.trigger('dispose');
this.decrypter_.terminate();
this.mainPlaylistLoader_.dispose();
this.mainSegmentLoader_.dispose();
this.contentSteeringController_.dispose();
this.keyStatusMap_.clear();
if (this.loadOnPlay_) {
this.tech_.off('play', this.loadOnPlay_);
}
['AUDIO', 'SUBTITLES'].forEach(type => {
const groups = this.mediaTypes_[type].groups;
for (const id in groups) {
groups[id].forEach(group => {
if (group.playlistLoader) {
group.playlistLoader.dispose();
}
});
}
});
this.audioSegmentLoader_.dispose();
this.subtitleSegmentLoader_.dispose();
this.sourceUpdater_.dispose();
this.timelineChangeController_.dispose();
this.stopABRTimer_();
if (this.updateDuration_) {
this.mediaSource.removeEventListener('sourceopen', this.updateDuration_);
}
this.mediaSource.removeEventListener('durationchange', this.handleDurationChange_); // load the media source into the player
this.mediaSource.removeEventListener('sourceopen', this.handleSourceOpen_);
this.mediaSource.removeEventListener('sourceended', this.handleSourceEnded_);
this.off();
}
/**
* return the main playlist object if we have one
*
* @return {Object} the main playlist object that we parsed
*/
main() {
return this.mainPlaylistLoader_.main;
}
/**
* return the currently selected playlist
*
* @return {Object} the currently selected playlist object that we parsed
*/
media() {
// playlist loader will not return media if it has not been fully loaded
return this.mainPlaylistLoader_.media() || this.initialMedia_;
}
areMediaTypesKnown_() {
const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
const hasMainMediaInfo = !!this.mainSegmentLoader_.getCurrentMediaInfo_(); // if we are not using an audio loader, then we have audio media info
// otherwise check on the segment loader.
const hasAudioMediaInfo = !usingAudioLoader ? true : !!this.audioSegmentLoader_.getCurrentMediaInfo_(); // one or both loaders has not loaded sufficently to get codecs
if (!hasMainMediaInfo || !hasAudioMediaInfo) {
return false;
}
return true;
} // find from and to for codec switch event
getCodecsOrExclude_() {
const media = {
main: this.mainSegmentLoader_.getCurrentMediaInfo_() || {},
audio: this.audioSegmentLoader_.getCurrentMediaInfo_() || {}
};
const playlist = this.mainSegmentLoader_.getPendingSegmentPlaylist() || this.media(); // set "main" media equal to video
media.video = media.main;
const playlistCodecs = codecsForPlaylist(this.main(), playlist);
const codecs = {};
const usingAudioLoader = !!this.mediaTypes_.AUDIO.activePlaylistLoader;
if (media.main.hasVideo) {
codecs.video = playlistCodecs.video || media.main.videoCodec || DEFAULT_VIDEO_CODEC;
}
if (media.main.isMuxed) {
codecs.video += `,${playlistCodecs.audio || media.main.audioCodec || DEFAULT_AUDIO_CODEC}`;
}
if (media.main.hasAudio && !media.main.isMuxed || media.audio.hasAudio || usingAudioLoader) {
codecs.audio = playlistCodecs.audio || media.main.audioCodec || media.audio.audioCodec || DEFAULT_AUDIO_CODEC; // set audio isFmp4 so we use the correct "supports" function below
media.audio.isFmp4 = media.main.hasAudio && !media.main.isMuxed ? media.main.isFmp4 : media.audio.isFmp4;
} // no codecs, no playback.
if (!codecs.audio && !codecs.video) {
this.excludePlaylist({
playlistToExclude: playlist,
error: {
message: 'Could not determine codecs for playlist.'
},
playlistExclusionDuration: Infinity
});
return;
} // fmp4 relies on browser support, while ts relies on muxer support
const supportFunction = (isFmp4, codec) => isFmp4 ? browserSupportsCodec(codec) : muxerSupportsCodec(codec);
const unsupportedCodecs = {};
let unsupportedAudio;
['video', 'audio'].forEach(function (type) {
if (codecs.hasOwnProperty(type) && !supportFunction(media[type].isFmp4, codecs[type])) {
const supporter = media[type].isFmp4 ? 'browser' : 'muxer';
unsupportedCodecs[supporter] = unsupportedCodecs[supporter] || [];
unsupportedCodecs[supporter].push(codecs[type]);
if (type === 'audio') {
unsupportedAudio = supporter;
}
}
});
if (usingAudioLoader && unsupportedAudio && playlist.attributes.AUDIO) {
const audioGroup = playlist.attributes.AUDIO;
this.main().playlists.forEach(variant => {
const variantAudioGroup = variant.attributes && variant.attributes.AUDIO;
if (variantAudioGroup === audioGroup && variant !== playlist) {
variant.excludeUntil = Infinity;
}
});
this.logger_(`excluding audio group ${audioGroup} as ${unsupportedAudio} does not support codec(s): "${codecs.audio}"`);
} // if we have any unsupported codecs exclude this playlist.
if (Object.keys(unsupportedCodecs).length) {
const message = Object.keys(unsupportedCodecs).reduce((acc, supporter) => {
if (acc) {
acc += ', ';
}
acc += `${supporter} does not support codec(s): "${unsupportedCodecs[supporter].join(',')}"`;
return acc;
}, '') + '.';
this.excludePlaylist({
playlistToExclude: playlist,
error: {
internal: true,
message
},
playlistExclusionDuration: Infinity
});
return;
} // check if codec switching is happening
if (this.sourceUpdater_.hasCreatedSourceBuffers() && !this.sourceUpdater_.canChangeType()) {
const switchMessages = [];
['video', 'audio'].forEach(type => {
const newCodec = (parseCodecs(this.sourceUpdater_.codecs[type] || '')[0] || {}).type;
const oldCodec = (parseCodecs(codecs[type] || '')[0] || {}).type;
if (newCodec && oldCodec && newCodec.toLowerCase() !== oldCodec.toLowerCase()) {
switchMessages.push(`"${this.sourceUpdater_.codecs[type]}" -> "${codecs[type]}"`);
}
});
if (switchMessages.length) {
this.excludePlaylist({
playlistToExclude: playlist,
error: {
message: `Codec switching not supported: ${switchMessages.join(', ')}.`,
internal: true
},
playlistExclusionDuration: Infinity
});
return;
}
} // TODO: when using the muxer shouldn't we just return
// the codecs that the muxer outputs?
return codecs;
}
/**
* Create source buffers and exlude any incompatible renditions.
*
* @private
*/
tryToCreateSourceBuffers_() {
// media source is not ready yet or sourceBuffers are already
// created.
if (this.mediaSource.readyState !== 'open' || this.sourceUpdater_.hasCreatedSourceBuffers()) {
return;
}
if (!this.areMediaTypesKnown_()) {
return;
}
const codecs = this.getCodecsOrExclude_(); // no codecs means that the playlist was excluded
if (!codecs) {
return;
}
this.sourceUpdater_.createSourceBuffers(codecs);
const codecString = [codecs.video, codecs.audio].filter(Boolean).join(',');
this.excludeIncompatibleVariants_(codecString);
}
/**
* Excludes playlists with codecs that are unsupported by the muxer and browser.
*/
excludeUnsupportedVariants_() {
const playlists = this.main().playlists;
const ids = []; // TODO: why don't we have a property to loop through all
// playlist? Why did we ever mix indexes and keys?
Object.keys(playlists).forEach(key => {
const variant = playlists[key]; // check if we already processed this playlist.
if (ids.indexOf(variant.id) !== -1) {
return;
}
ids.push(variant.id);
const codecs = codecsForPlaylist(this.main, variant);
const unsupported = [];
if (codecs.audio && !muxerSupportsCodec(codecs.audio) && !browserSupportsCodec(codecs.audio)) {
unsupported.push(`audio codec ${codecs.audio}`);
}
if (codecs.video && !muxerSupportsCodec(codecs.video) && !browserSupportsCodec(codecs.video)) {
unsupported.push(`video codec ${codecs.video}`);
}
if (codecs.text && codecs.text === 'stpp.ttml.im1t') {
unsupported.push(`text codec ${codecs.text}`);
}
if (unsupported.length) {
variant.excludeUntil = Infinity;
this.logger_(`excluding ${variant.id} for unsupported: ${unsupported.join(', ')}`);
}
});
}
/**
* Exclude playlists that are known to be codec or
* stream-incompatible with the SourceBuffer configuration. For
* instance, Media Source Extensions would cause the video element to
* stall waiting for video data if you switched from a variant with
* video and audio to an audio-only one.
*
* @param {Object} media a media playlist compatible with the current
* set of SourceBuffers. Variants in the current main playlist that
* do not appear to have compatible codec or stream configurations
* will be excluded from the default playlist selection algorithm
* indefinitely.
* @private
*/
excludeIncompatibleVariants_(codecString) {
const ids = [];
const playlists = this.main().playlists;
const codecs = unwrapCodecList(parseCodecs(codecString));
const codecCount_ = codecCount(codecs);
const videoDetails = codecs.video && parseCodecs(codecs.video)[0] || null;
const audioDetails = codecs.audio && parseCodecs(codecs.audio)[0] || null;
Object.keys(playlists).forEach(key => {
const variant = playlists[key]; // check if we already processed this playlist.
// or it if it is already excluded forever.
if (ids.indexOf(variant.id) !== -1 || variant.excludeUntil === Infinity) {
return;
}
ids.push(variant.id);
const exclusionReasons = []; // get codecs from the playlist for this variant
const variantCodecs = codecsForPlaylist(this.mainPlaylistLoader_.main, variant);
const variantCodecCount = codecCount(variantCodecs); // if no codecs are listed, we cannot determine that this
// variant is incompatible. Wait for mux.js to probe
if (!variantCodecs.audio && !variantCodecs.video) {
return;
} // TODO: we can support this by removing the
// old media source and creating a new one, but it will take some work.
// The number of streams cannot change
if (variantCodecCount !== codecCount_) {
exclusionReasons.push(`codec count "${variantCodecCount}" !== "${codecCount_}"`);
} // only exclude playlists by codec change, if codecs cannot switch
// during playback.
if (!this.sourceUpdater_.canChangeType()) {
const variantVideoDetails = variantCodecs.video && parseCodecs(variantCodecs.video)[0] || null;
const variantAudioDetails = variantCodecs.audio && parseCodecs(variantCodecs.audio)[0] || null; // the video codec cannot change
if (variantVideoDetails && videoDetails && variantVideoDetails.type.toLowerCase() !== videoDetails.type.toLowerCase()) {
exclusionReasons.push(`video codec "${variantVideoDetails.type}" !== "${videoDetails.type}"`);
} // the audio codec cannot change
if (variantAudioDetails && audioDetails && variantAudioDetails.type.toLowerCase() !== audioDetails.type.toLowerCase()) {
exclusionReasons.push(`audio codec "${variantAudioDetails.type}" !== "${audioDetails.type}"`);
}
}
if (exclusionReasons.length) {
variant.excludeUntil = Infinity;
this.logger_(`excluding ${variant.id}: ${exclusionReasons.join(' && ')}`);
}
});
}
updateAdCues_(media) {
let offset = 0;
const seekable = this.seekable();
if (seekable.length) {
offset = seekable.start(0);
}
updateAdCues(media, this.cueTagsTrack_, offset);
}
/**
* Calculates the desired forward buffer length based on current time
*
* @return {number} Desired forward buffer length in seconds
*/
goalBufferLength() {
const currentTime = this.tech_.currentTime();
const initial = Config.GOAL_BUFFER_LENGTH;
const rate = Config.GOAL_BUFFER_LENGTH_RATE;
const max = Math.max(initial, Config.MAX_GOAL_BUFFER_LENGTH);
return Math.min(initial + currentTime * rate, max);
}
/**
* Calculates the desired buffer low water line based on current time
*
* @return {number} Desired buffer low water line in seconds
*/
bufferLowWaterLine() {
const currentTime = this.tech_.currentTime();
const initial = Config.BUFFER_LOW_WATER_LINE;
const rate = Config.BUFFER_LOW_WATER_LINE_RATE;
const max = Math.max(initial, Config.MAX_BUFFER_LOW_WATER_LINE);
const newMax = Math.max(initial, Config.EXPERIMENTAL_MAX_BUFFER_LOW_WATER_LINE);
return Math.min(initial + currentTime * rate, this.bufferBasedABR ? newMax : max);
}
bufferHighWaterLine() {
return Config.BUFFER_HIGH_WATER_LINE;
}
addDateRangesToTextTrack_(dateRanges) {
createMetadataTrackIfNotExists(this.inbandTextTracks_, 'com.apple.streaming', this.tech_);
addDateRangeMetadata({
inbandTextTracks: this.inbandTextTracks_,
dateRanges
});
}
addMetadataToTextTrack(dispatchType, metadataArray, videoDuration) {
const timestampOffset = this.sourceUpdater_.videoBuffer ? this.sourceUpdater_.videoTimestampOffset() : this.sourceUpdater_.audioTimestampOffset(); // There's potentially an issue where we could double add metadata if there's a muxed
// audio/video source with a metadata track, and an alt audio with a metadata track.
// However, this probably won't happen, and if it does it can be handled then.
createMetadataTrackIfNotExists(this.inbandTextTracks_, dispatchType, this.tech_);
addMetadata({
inbandTextTracks: this.inbandTextTracks_,
metadataArray,
timestampOffset,
videoDuration
});
}
/**
* Utility for getting the pathway or service location from an HLS or DASH playlist.
*
* @param {Object} playlist for getting pathway from.
* @return the pathway attribute of a playlist
*/
pathwayAttribute_(playlist) {
return playlist.attributes['PATHWAY-ID'] || playlist.attributes.serviceLocation;
}
/**
* Initialize available pathways and apply the tag properties.
*/
initContentSteeringController_() {
const main = this.main();
if (!main.contentSteering) {
return;
}
for (const playlist of main.playlists) {
this.contentSteeringController_.addAvailablePathway(this.pathwayAttribute_(playlist));
}
this.contentSteeringController_.assignTagProperties(main.uri, main.contentSteering); // request the steering manifest immediately if queryBeforeStart is set.
if (this.contentSteeringController_.queryBeforeStart) {
// When queryBeforeStart is true, initial request should omit steering parameters.
this.contentSteeringController_.requestSteeringManifest(true);
return;
} // otherwise start content steering after playback starts
this.tech_.one('canplay', () => {
this.contentSteeringController_.requestSteeringManifest();
});
}
/**
* Reset the content steering controller and re-init.
*/
resetContentSteeringController_() {
this.contentSteeringController_.clearAvailablePathways();
this.contentSteeringController_.dispose();
this.initContentSteeringController_();
}
/**
* Attaches the listeners for content steering.
*/
attachContentSteeringListeners_() {
this.contentSteeringController_.on('content-steering', this.excludeThenChangePathway_.bind(this));
const contentSteeringEvents = ['contentsteeringloadstart', 'contentsteeringloadcomplete', 'contentsteeringparsed'];
contentSteeringEvents.forEach(eventName => {
this.contentSteeringController_.on(eventName, metadata => {
this.trigger(_extends$1({}, metadata));
});
});
if (this.sourceType_ === 'dash') {
this.mainPlaylistLoader_.on('loadedplaylist', () => {
const main = this.main(); // check if steering tag or pathways changed.
const didDashTagChange = this.contentSteeringController_.didDASHTagChange(main.uri, main.contentSteering);
const didPathwaysChange = () => {
const availablePathways = this.contentSteeringController_.getAvailablePathways();
const newPathways = [];
for (const playlist of main.playlists) {
const serviceLocation = playlist.attributes.serviceLocation;
if (serviceLocation) {
newPathways.push(serviceLocation);
if (!availablePathways.has(serviceLocation)) {
return true;
}
}
} // If we have no new serviceLocations and previously had availablePathways
if (!newPathways.length && availablePathways.size) {
return true;
}
return false;
};
if (didDashTagChange || didPathwaysChange()) {
this.resetContentSteeringController_();
}
});
}
}
/**
* Simple exclude and change playlist logic for content steering.
*/
excludeThenChangePathway_() {
const currentPathway = this.contentSteeringController_.getPathway();
if (!currentPathway) {
return;
}
this.handlePathwayClones_();
const main = this.main();
const playlists = main.playlists;
const ids = new Set();
let didEnablePlaylists = false;
Object.keys(playlists).forEach(key => {
const variant = playlists[key];
const pathwayId = this.pathwayAttribute_(variant);
const differentPathwayId = pathwayId && currentPathway !== pathwayId;
const steeringExclusion = variant.excludeUntil === Infinity && variant.lastExcludeReason_ === 'content-steering';
if (steeringExclusion && !differentPathwayId) {
delete variant.excludeUntil;
delete variant.lastExcludeReason_;
didEnablePlaylists = true;
}
const noExcludeUntil = !variant.excludeUntil && variant.excludeUntil !== Infinity;
const shouldExclude = !ids.has(variant.id) && differentPathwayId && noExcludeUntil;
if (!shouldExclude) {
return;
}
ids.add(variant.id);
variant.excludeUntil = Infinity;
variant.lastExcludeReason_ = 'content-steering'; // TODO: kind of spammy, maybe move this.
this.logger_(`excluding ${variant.id} for ${variant.lastExcludeReason_}`);
});
if (this.contentSteeringController_.manifestType_ === 'DASH') {
Object.keys(this.mediaTypes_).forEach(key => {
const type = this.mediaTypes_[key];
if (type.activePlaylistLoader) {
const currentPlaylist = type.activePlaylistLoader.media_; // Check if the current media playlist matches the current CDN
if (currentPlaylist && currentPlaylist.attributes.serviceLocation !== currentPathway) {
didEnablePlaylists = true;
}
}
});
}
if (didEnablePlaylists) {
this.changeSegmentPathway_();
}
}
/**
* Add, update, or delete playlists and media groups for
* the pathway clones for HLS Content Steering.
*
* See https://datatracker.ietf.org/doc/draft-pantos-hls-rfc8216bis/
*
* NOTE: Pathway cloning does not currently support the `PER_VARIANT_URIS` and
* `PER_RENDITION_URIS` as we do not handle `STABLE-VARIANT-ID` or
* `STABLE-RENDITION-ID` values.
*/
handlePathwayClones_() {
const main = this.main();
const playlists = main.playlists;
const currentPathwayClones = this.contentSteeringController_.currentPathwayClones;
const nextPathwayClones = this.contentSteeringController_.nextPathwayClones;
const hasClones = currentPathwayClones && currentPathwayClones.size || nextPathwayClones && nextPathwayClones.size;
if (!hasClones) {
return;
}
for (const [id, clone] of currentPathwayClones.entries()) {
const newClone = nextPathwayClones.get(id); // Delete the old pathway clone.
if (!newClone) {
this.mainPlaylistLoader_.updateOrDeleteClone(clone);
this.contentSteeringController_.excludePathway(id);
}
}
for (const [id, clone] of nextPathwayClones.entries()) {
const oldClone = currentPathwayClones.get(id); // Create a new pathway if it is a new pathway clone object.
if (!oldClone) {
const playlistsToClone = playlists.filter(p => {
return p.attributes['PATHWAY-ID'] === clone['BASE-ID'];
});
playlistsToClone.forEach(p => {
this.mainPlaylistLoader_.addClonePathway(clone, p);
});
this.contentSteeringController_.addAvailablePathway(id);
continue;
} // There have not been changes to the pathway clone object, so skip.
if (this.equalPathwayClones_(oldClone, clone)) {
continue;
} // Update a preexisting cloned pathway.
// True is set for the update flag.
this.mainPlaylistLoader_.updateOrDeleteClone(clone, true);
this.contentSteeringController_.addAvailablePathway(id);
} // Deep copy contents of next to current pathways.
this.contentSteeringController_.currentPathwayClones = new Map(JSON.parse(JSON.stringify([...nextPathwayClones])));
}
/**
* Determines whether two pathway clone objects are equivalent.
*
* @param {Object} a The first pathway clone object.
* @param {Object} b The second pathway clone object.
* @return {boolean} True if the pathway clone objects are equal, false otherwise.
*/
equalPathwayClones_(a, b) {
if (a['BASE-ID'] !== b['BASE-ID'] || a.ID !== b.ID || a['URI-REPLACEMENT'].HOST !== b['URI-REPLACEMENT'].HOST) {
return false;
}
const aParams = a['URI-REPLACEMENT'].PARAMS;
const bParams = b['URI-REPLACEMENT'].PARAMS; // We need to iterate through both lists of params because one could be
// missing a parameter that the other has.
for (const p in aParams) {
if (aParams[p] !== bParams[p]) {
return false;
}
}
for (const p in bParams) {
if (aParams[p] !== bParams[p]) {
return false;
}
}
return true;
}
/**
* Changes the current playlists for audio, video and subtitles after a new pathway
* is chosen from content steering.
*/
changeSegmentPathway_() {
const nextPlaylist = this.selectPlaylist();
this.pauseLoading(); // Switch audio and text track playlists if necessary in DASH
if (this.contentSteeringController_.manifestType_ === 'DASH') {
this.switchMediaForDASHContentSteering_();
}
this.switchMedia_(nextPlaylist, 'content-steering');
}
/**
* Iterates through playlists and check their keyId set and compare with the
* keyStatusMap, only enable playlists that have a usable key. If the playlist
* has no keyId leave it enabled by default.
*/
excludeNonUsablePlaylistsByKeyId_() {
if (!this.mainPlaylistLoader_ || !this.mainPlaylistLoader_.main) {
return;
}
let nonUsableKeyStatusCount = 0;
const NON_USABLE = 'non-usable';
this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
const keyIdSet = this.mainPlaylistLoader_.getKeyIdSet(playlist); // If the playlist doesn't have keyIDs lets not exclude it.
if (!keyIdSet || !keyIdSet.size) {
return;
}
keyIdSet.forEach(key => {
const USABLE = 'usable';
const hasUsableKeyStatus = this.keyStatusMap_.has(key) && this.keyStatusMap_.get(key) === USABLE;
const nonUsableExclusion = playlist.lastExcludeReason_ === NON_USABLE && playlist.excludeUntil === Infinity;
if (!hasUsableKeyStatus) {
// Only exclude playlists that haven't already been excluded as non-usable.
if (playlist.excludeUntil !== Infinity && playlist.lastExcludeReason_ !== NON_USABLE) {
playlist.excludeUntil = Infinity;
playlist.lastExcludeReason_ = NON_USABLE;
this.logger_(`excluding playlist ${playlist.id} because the key ID ${key} doesn't exist in the keyStatusMap or is not ${USABLE}`);
} // count all nonUsableKeyStatus
nonUsableKeyStatusCount++;
} else if (hasUsableKeyStatus && nonUsableExclusion) {
delete playlist.excludeUntil;
delete playlist.lastExcludeReason_;
this.logger_(`enabling playlist ${playlist.id} because key ID ${key} is ${USABLE}`);
}
});
}); // If for whatever reason every playlist has a non usable key status. Lets try re-including the SD renditions as a failsafe.
if (nonUsableKeyStatusCount >= this.mainPlaylistLoader_.main.playlists.length) {
this.mainPlaylistLoader_.main.playlists.forEach(playlist => {
const isNonHD = playlist && playlist.attributes && playlist.attributes.RESOLUTION && playlist.attributes.RESOLUTION.height < 720;
const excludedForNonUsableKey = playlist.excludeUntil === Infinity && playlist.lastExcludeReason_ === NON_USABLE;
if (isNonHD && excludedForNonUsableKey) {
// Only delete the excludeUntil so we don't try and re-exclude these playlists.
delete playlist.excludeUntil;
videojs.log.warn(`enabling non-HD playlist ${playlist.id} because all playlists were excluded due to ${NON_USABLE} key IDs`);
}
});
}
}
/**
* Adds a keystatus to the keystatus map, tries to convert to string if necessary.
*
* @param {any} keyId the keyId to add a status for
* @param {string} status the status of the keyId
*/
addKeyStatus_(keyId, status) {
const isString = typeof keyId === 'string';
const keyIdHexString = isString ? keyId : bufferToHexString(keyId);
const formattedKeyIdString = keyIdHexString.slice(0, 32).toLowerCase();
this.logger_(`KeyStatus '${status}' with key ID ${formattedKeyIdString} added to the keyStatusMap`);
this.keyStatusMap_.set(formattedKeyIdString, status);
}
/**
* Utility function for adding key status to the keyStatusMap and filtering usable encrypted playlists.
*
* @param {any} keyId the keyId from the keystatuschange event
* @param {string} status the key status string
*/
updatePlaylistByKeyStatus(keyId, status) {
this.addKeyStatus_(keyId, status);
if (!this.waitingForFastQualityPlaylistReceived_) {
this.excludeNonUsableThenChangePlaylist_();
} // Listen to loadedplaylist with a single listener and check for new contentProtection elements when a playlist is updated.
this.mainPlaylistLoader_.off('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
this.mainPlaylistLoader_.on('loadedplaylist', this.excludeNonUsableThenChangePlaylist_.bind(this));
}
excludeNonUsableThenChangePlaylist_() {
this.excludeNonUsablePlaylistsByKeyId_();
this.fastQualityChange_();
}
}
/**
* Returns a function that acts as the Enable/disable playlist function.
*
* @param {PlaylistLoader} loader - The main playlist loader
* @param {string} playlistID - id of the playlist
* @param {Function} changePlaylistFn - A function to be called after a
* playlist's enabled-state has been changed. Will NOT be called if a
* playlist's enabled-state is unchanged
* @param {boolean=} enable - Value to set the playlist enabled-state to
* or if undefined returns the current enabled-state for the playlist
* @return {Function} Function for setting/getting enabled
*/
const enableFunction = (loader, playlistID, changePlaylistFn) => enable => {
const playlist = loader.main.playlists[playlistID];
const incompatible = isIncompatible(playlist);
const currentlyEnabled = isEnabled(playlist);
if (typeof enable === 'undefined') {
return currentlyEnabled;
}
if (enable) {
delete playlist.disabled;
} else {
playlist.disabled = true;
}
const metadata = {
renditionInfo: {
id: playlistID,
bandwidth: playlist.attributes.BANDWIDTH,
resolution: playlist.attributes.RESOLUTION,
codecs: playlist.attributes.CODECS
},
cause: 'fast-quality'
};
if (enable !== currentlyEnabled && !incompatible) {
// Ensure the outside world knows about our changes
changePlaylistFn(playlist);
if (enable) {
loader.trigger({
type: 'renditionenabled',
metadata
});
} else {
loader.trigger({
type: 'renditiondisabled',
metadata
});
}
}
return enable;
};
/**
* The representation object encapsulates the publicly visible information
* in a media playlist along with a setter/getter-type function (enabled)
* for changing the enabled-state of a particular playlist entry
*
* @class Representation
*/
class Representation {
constructor(vhsHandler, playlist, id) {
const {
playlistController_: pc
} = vhsHandler;
const qualityChangeFunction = pc.fastQualityChange_.bind(pc); // some playlist attributes are optional
if (playlist.attributes) {
const resolution = playlist.attributes.RESOLUTION;
this.width = resolution && resolution.width;
this.height = resolution && resolution.height;
this.bandwidth = playlist.attributes.BANDWIDTH;
this.frameRate = playlist.attributes['FRAME-RATE'];
}
this.codecs = codecsForPlaylist(pc.main(), playlist);
this.playlist = playlist; // The id is simply the ordinality of the media playlist
// within the main playlist
this.id = id; // Partially-apply the enableFunction to create a playlist-
// specific variant
this.enabled = enableFunction(vhsHandler.playlists, playlist.id, qualityChangeFunction);
}
}
/**
* A mixin function that adds the `representations` api to an instance
* of the VhsHandler class
*
* @param {VhsHandler} vhsHandler - An instance of VhsHandler to add the
* representation API into
*/
const renditionSelectionMixin = function (vhsHandler) {
// Add a single API-specific function to the VhsHandler instance
vhsHandler.representations = () => {
const main = vhsHandler.playlistController_.main();
const playlists = isAudioOnly(main) ? vhsHandler.playlistController_.getAudioTrackPlaylists_() : main.playlists;
if (!playlists) {
return [];
}
return playlists.filter(media => !isIncompatible(media)).map((e, i) => new Representation(vhsHandler, e, e.id));
};
};
/**
* @file playback-watcher.js
*
* Playback starts, and now my watch begins. It shall not end until my death. I shall
* take no wait, hold no uncleared timeouts, father no bad seeks. I shall wear no crowns
* and win no glory. I shall live and die at my post. I am the corrector of the underflow.
* I am the watcher of gaps. I am the shield that guards the realms of seekable. I pledge
* my life and honor to the Playback Watch, for this Player and all the Players to come.
*/
const timerCancelEvents = ['seeking', 'seeked', 'pause', 'playing', 'error'];
/**
* @class PlaybackWatcher
*/
class PlaybackWatcher extends videojs.EventTarget {
/**
* Represents an PlaybackWatcher object.
*
* @class
* @param {Object} options an object that includes the tech and settings
*/
constructor(options) {
super();
this.playlistController_ = options.playlistController;
this.tech_ = options.tech;
this.seekable = options.seekable;
this.allowSeeksWithinUnsafeLiveWindow = options.allowSeeksWithinUnsafeLiveWindow;
this.liveRangeSafeTimeDelta = options.liveRangeSafeTimeDelta;
this.media = options.media;
this.playedRanges_ = [];
this.consecutiveUpdates = 0;
this.lastRecordedTime = null;
this.checkCurrentTimeTimeout_ = null;
this.logger_ = logger('PlaybackWatcher');
this.logger_('initialize');
const playHandler = () => this.monitorCurrentTime_();
const canPlayHandler = () => this.monitorCurrentTime_();
const waitingHandler = () => this.techWaiting_();
const cancelTimerHandler = () => this.resetTimeUpdate_();
const pc = this.playlistController_;
const loaderTypes = ['main', 'subtitle', 'audio'];
const loaderChecks = {};
loaderTypes.forEach(type => {
loaderChecks[type] = {
reset: () => this.resetSegmentDownloads_(type),
updateend: () => this.checkSegmentDownloads_(type)
};
pc[`${type}SegmentLoader_`].on('appendsdone', loaderChecks[type].updateend); // If a rendition switch happens during a playback stall where the buffer
// isn't changing we want to reset. We cannot assume that the new rendition
// will also be stalled, until after new appends.
pc[`${type}SegmentLoader_`].on('playlistupdate', loaderChecks[type].reset); // Playback stalls should not be detected right after seeking.
// This prevents one segment playlists (single vtt or single segment content)
// from being detected as stalling. As the buffer will not change in those cases, since
// the buffer is the entire video duration.
this.tech_.on(['seeked', 'seeking'], loaderChecks[type].reset);
});
/**
* We check if a seek was into a gap through the following steps:
* 1. We get a seeking event and we do not get a seeked event. This means that
* a seek was attempted but not completed.
* 2. We run `fixesBadSeeks_` on segment loader appends. This means that we already
* removed everything from our buffer and appended a segment, and should be ready
* to check for gaps.
*/
const setSeekingHandlers = fn => {
['main', 'audio'].forEach(type => {
pc[`${type}SegmentLoader_`][fn]('appended', this.seekingAppendCheck_);
});
};
this.seekingAppendCheck_ = () => {
if (this.fixesBadSeeks_()) {
this.consecutiveUpdates = 0;
this.lastRecordedTime = this.tech_.currentTime();
setSeekingHandlers('off');
}
};
this.clearSeekingAppendCheck_ = () => setSeekingHandlers('off');
this.watchForBadSeeking_ = () => {
this.clearSeekingAppendCheck_();
setSeekingHandlers('on');
};
this.tech_.on('seeked', this.clearSeekingAppendCheck_);
this.tech_.on('seeking', this.watchForBadSeeking_);
this.tech_.on('waiting', waitingHandler);
this.tech_.on(timerCancelEvents, cancelTimerHandler);
this.tech_.on('canplay', canPlayHandler);
/*
An edge case exists that results in gaps not being skipped when they exist at the beginning of a stream. This case
is surfaced in one of two ways:
1) The `waiting` event is fired before the player has buffered content, making it impossible
to find or skip the gap. The `waiting` event is followed by a `play` event. On first play
we can check if playback is stalled due to a gap, and skip the gap if necessary.
2) A source with a gap at the beginning of the stream is loaded programatically while the player
is in a playing state. To catch this case, it's important that our one-time play listener is setup
even if the player is in a playing state
*/
this.tech_.one('play', playHandler); // Define the dispose function to clean up our events
this.dispose = () => {
this.clearSeekingAppendCheck_();
this.logger_('dispose');
this.tech_.off('waiting', waitingHandler);
this.tech_.off(timerCancelEvents, cancelTimerHandler);
this.tech_.off('canplay', canPlayHandler);
this.tech_.off('play', playHandler);
this.tech_.off('seeking', this.watchForBadSeeking_);
this.tech_.off('seeked', this.clearSeekingAppendCheck_);
loaderTypes.forEach(type => {
pc[`${type}SegmentLoader_`].off('appendsdone', loaderChecks[type].updateend);
pc[`${type}SegmentLoader_`].off('playlistupdate', loaderChecks[type].reset);
this.tech_.off(['seeked', 'seeking'], loaderChecks[type].reset);
});
if (this.checkCurrentTimeTimeout_) {
window.clearTimeout(this.checkCurrentTimeTimeout_);
}
this.resetTimeUpdate_();
};
}
/**
* Periodically check current time to see if playback stopped
*
* @private
*/
monitorCurrentTime_() {
this.checkCurrentTime_();
if (this.checkCurrentTimeTimeout_) {
window.clearTimeout(this.checkCurrentTimeTimeout_);
} // 42 = 24 fps // 250 is what Webkit uses // FF uses 15
this.checkCurrentTimeTimeout_ = window.setTimeout(this.monitorCurrentTime_.bind(this), 250);
}
/**
* Reset stalled download stats for a specific type of loader
*
* @param {string} type
* The segment loader type to check.
*
* @listens SegmentLoader#playlistupdate
* @listens Tech#seeking
* @listens Tech#seeked
*/
resetSegmentDownloads_(type) {
const loader = this.playlistController_[`${type}SegmentLoader_`];
if (this[`${type}StalledDownloads_`] > 0) {
this.logger_(`resetting possible stalled download count for ${type} loader`);
}
this[`${type}StalledDownloads_`] = 0;
this[`${type}Buffered_`] = loader.buffered_();
}
/**
* Checks on every segment `appendsdone` to see
* if segment appends are making progress. If they are not
* and we are still downloading bytes. We exclude the playlist.
*
* @param {string} type
* The segment loader type to check.
*
* @listens SegmentLoader#appendsdone
*/
checkSegmentDownloads_(type) {
const pc = this.playlistController_;
const loader = pc[`${type}SegmentLoader_`];
const buffered = loader.buffered_();
const isBufferedDifferent = isRangeDifferent(this[`${type}Buffered_`], buffered);
this[`${type}Buffered_`] = buffered; // if another watcher is going to fix the issue or
// the buffered value for this loader changed
// appends are working
if (isBufferedDifferent) {
const metadata = {
bufferedRanges: buffered
};
pc.trigger({
type: 'bufferedrangeschanged',
metadata
});
this.resetSegmentDownloads_(type);
return;
}
this[`${type}StalledDownloads_`]++;
this.logger_(`found #${this[`${type}StalledDownloads_`]} ${type} appends that did not increase buffer (possible stalled download)`, {
playlistId: loader.playlist_ && loader.playlist_.id,
buffered: timeRangesToArray(buffered)
}); // after 10 possibly stalled appends with no reset, exclude
if (this[`${type}StalledDownloads_`] < 10) {
return;
}
this.logger_(`${type} loader stalled download exclusion`);
this.resetSegmentDownloads_(type);
this.tech_.trigger({
type: 'usage',
name: `vhs-${type}-download-exclusion`
});
if (type === 'subtitle') {
return;
} // TODO: should we exclude audio tracks rather than main tracks
// when type is audio?
pc.excludePlaylist({
error: {
message: `Excessive ${type} segment downloading detected.`
},
playlistExclusionDuration: Infinity
});
}
/**
* The purpose of this function is to emulate the "waiting" event on
* browsers that do not emit it when they are waiting for more
* data to continue playback
*
* @private
*/
checkCurrentTime_() {
if (this.tech_.paused() || this.tech_.seeking()) {
return;
}
const currentTime = this.tech_.currentTime();
const buffered = this.tech_.buffered();
if (this.lastRecordedTime === currentTime && (!buffered.length || currentTime + SAFE_TIME_DELTA >= buffered.end(buffered.length - 1))) {
// If current time is at the end of the final buffered region, then any playback
// stall is most likely caused by buffering in a low bandwidth environment. The tech
// should fire a `waiting` event in this scenario, but due to browser and tech
// inconsistencies. Calling `techWaiting_` here allows us to simulate
// responding to a native `waiting` event when the tech fails to emit one.
return this.techWaiting_();
}
if (this.consecutiveUpdates >= 5 && currentTime === this.lastRecordedTime) {
this.consecutiveUpdates++;
this.waiting_();
} else if (currentTime === this.lastRecordedTime) {
this.consecutiveUpdates++;
} else {
this.playedRanges_.push(createTimeRanges([this.lastRecordedTime, currentTime]));
const metadata = {
playedRanges: this.playedRanges_
};
this.playlistController_.trigger({
type: 'playedrangeschanged',
metadata
});
this.consecutiveUpdates = 0;
this.lastRecordedTime = currentTime;
}
}
/**
* Resets the 'timeupdate' mechanism designed to detect that we are stalled
*
* @private
*/
resetTimeUpdate_() {
this.consecutiveUpdates = 0;
}
/**
* Fixes situations where there's a bad seek
*
* @return {boolean} whether an action was taken to fix the seek
* @private
*/
fixesBadSeeks_() {
const seeking = this.tech_.seeking();
if (!seeking) {
return false;
} // TODO: It's possible that these seekable checks should be moved out of this function
// and into a function that runs on seekablechange. It's also possible that we only need
// afterSeekableWindow as the buffered check at the bottom is good enough to handle before
// seekable range.
const seekable = this.seekable();
const currentTime = this.tech_.currentTime();
const isAfterSeekableRange = this.afterSeekableWindow_(seekable, currentTime, this.media(), this.allowSeeksWithinUnsafeLiveWindow);
let seekTo;
if (isAfterSeekableRange) {
const seekableEnd = seekable.end(seekable.length - 1); // sync to live point (if VOD, our seekable was updated and we're simply adjusting)
seekTo = seekableEnd;
}
if (this.beforeSeekableWindow_(seekable, currentTime)) {
const seekableStart = seekable.start(0); // sync to the beginning of the live window
// provide a buffer of .1 seconds to handle rounding/imprecise numbers
seekTo = seekableStart + (
// if the playlist is too short and the seekable range is an exact time (can
// happen in live with a 3 segment playlist), then don't use a time delta
seekableStart === seekable.end(0) ? 0 : SAFE_TIME_DELTA);
}
if (typeof seekTo !== 'undefined') {
this.logger_(`Trying to seek outside of seekable at time ${currentTime} with ` + `seekable range ${printableRange(seekable)}. Seeking to ` + `${seekTo}.`);
this.tech_.setCurrentTime(seekTo);
return true;
}
const sourceUpdater = this.playlistController_.sourceUpdater_;
const buffered = this.tech_.buffered();
const audioBuffered = sourceUpdater.audioBuffer ? sourceUpdater.audioBuffered() : null;
const videoBuffered = sourceUpdater.videoBuffer ? sourceUpdater.videoBuffered() : null;
const media = this.media(); // verify that at least two segment durations or one part duration have been
// appended before checking for a gap.
const minAppendedDuration = media.partTargetDuration ? media.partTargetDuration : (media.targetDuration - TIME_FUDGE_FACTOR) * 2; // verify that at least two segment durations have been
// appended before checking for a gap.
const bufferedToCheck = [audioBuffered, videoBuffered];
for (let i = 0; i < bufferedToCheck.length; i++) {
// skip null buffered
if (!bufferedToCheck[i]) {
continue;
}
const timeAhead = timeAheadOf(bufferedToCheck[i], currentTime); // if we are less than two video/audio segment durations or one part
// duration behind we haven't appended enough to call this a bad seek.
if (timeAhead < minAppendedDuration) {
return false;
}
}
const nextRange = findNextRange(buffered, currentTime); // we have appended enough content, but we don't have anything buffered
// to seek over the gap
if (nextRange.length === 0) {
return false;
}
seekTo = nextRange.start(0) + SAFE_TIME_DELTA;
this.logger_(`Buffered region starts (${nextRange.start(0)}) ` + ` just beyond seek point (${currentTime}). Seeking to ${seekTo}.`);
this.tech_.setCurrentTime(seekTo);
return true;
}
/**
* Handler for situations when we determine the player is waiting.
*
* @private
*/
waiting_() {
if (this.techWaiting_()) {
return;
} // All tech waiting checks failed. Use last resort correction
const currentTime = this.tech_.currentTime();
const buffered = this.tech_.buffered();
const currentRange = findRange(buffered, currentTime); // Sometimes the player can stall for unknown reasons within a contiguous buffered
// region with no indication that anything is amiss (seen in Firefox). Seeking to
// currentTime is usually enough to kickstart the player. This checks that the player
// is currently within a buffered region before attempting a corrective seek.
// Chrome does not appear to continue `timeupdate` events after a `waiting` event
// until there is ~ 3 seconds of forward buffer available. PlaybackWatcher should also
// make sure there is ~3 seconds of forward buffer before taking any corrective action
// to avoid triggering an `unknownwaiting` event when the network is slow.
if (currentRange.length && currentTime + 3 <= currentRange.end(0)) {
this.resetTimeUpdate_();
this.tech_.setCurrentTime(currentTime);
this.logger_(`Stopped at ${currentTime} while inside a buffered region ` + `[${currentRange.start(0)} -> ${currentRange.end(0)}]. Attempting to resume ` + 'playback by seeking to the current time.'); // unknown waiting corrections may be useful for monitoring QoS
this.tech_.trigger({
type: 'usage',
name: 'vhs-unknown-waiting'
});
return;
}
}
/**
* Handler for situations when the tech fires a `waiting` event
*
* @return {boolean}
* True if an action (or none) was needed to correct the waiting. False if no
* checks passed
* @private
*/
techWaiting_() {
const seekable = this.seekable();
const currentTime = this.tech_.currentTime();
if (this.tech_.seeking()) {
// Tech is seeking or already waiting on another action, no action needed
return true;
}
if (this.beforeSeekableWindow_(seekable, currentTime)) {
const livePoint = seekable.end(seekable.length - 1);
this.logger_(`Fell out of live window at time ${currentTime}. Seeking to ` + `live point (seekable end) ${livePoint}`);
this.resetTimeUpdate_();
this.tech_.setCurrentTime(livePoint); // live window resyncs may be useful for monitoring QoS
this.tech_.trigger({
type: 'usage',
name: 'vhs-live-resync'
});
return true;
}
const sourceUpdater = this.tech_.vhs.playlistController_.sourceUpdater_;
const buffered = this.tech_.buffered();
const videoUnderflow = this.videoUnderflow_({
audioBuffered: sourceUpdater.audioBuffered(),
videoBuffered: sourceUpdater.videoBuffered(),
currentTime
});
if (videoUnderflow) {
// Even though the video underflowed and was stuck in a gap, the audio overplayed
// the gap, leading currentTime into a buffered range. Seeking to currentTime
// allows the video to catch up to the audio position without losing any audio
// (only suffering ~3 seconds of frozen video and a pause in audio playback).
this.resetTimeUpdate_();
this.tech_.setCurrentTime(currentTime); // video underflow may be useful for monitoring QoS
this.tech_.trigger({
type: 'usage',
name: 'vhs-video-underflow'
});
return true;
}
const nextRange = findNextRange(buffered, currentTime); // check for gap
if (nextRange.length > 0) {
this.logger_(`Stopped at ${currentTime} and seeking to ${nextRange.start(0)}`);
this.resetTimeUpdate_();
this.skipTheGap_(currentTime);
return true;
} // All checks failed. Returning false to indicate failure to correct waiting
return false;
}
afterSeekableWindow_(seekable, currentTime, playlist, allowSeeksWithinUnsafeLiveWindow = false) {
if (!seekable.length) {
// we can't make a solid case if there's no seekable, default to false
return false;
}
let allowedEnd = seekable.end(seekable.length - 1) + SAFE_TIME_DELTA;
const isLive = !playlist.endList;
const isLLHLS = typeof playlist.partTargetDuration === 'number';
if (isLive && (isLLHLS || allowSeeksWithinUnsafeLiveWindow)) {
allowedEnd = seekable.end(seekable.length - 1) + playlist.targetDuration * 3;
}
if (currentTime > allowedEnd) {
return true;
}
return false;
}
beforeSeekableWindow_(seekable, currentTime) {
if (seekable.length &&
// can't fall before 0 and 0 seekable start identifies VOD stream
seekable.start(0) > 0 && currentTime < seekable.start(0) - this.liveRangeSafeTimeDelta) {
return true;
}
return false;
}
videoUnderflow_({
videoBuffered,
audioBuffered,
currentTime
}) {
// audio only content will not have video underflow :)
if (!videoBuffered) {
return;
}
let gap; // find a gap in demuxed content.
if (videoBuffered.length && audioBuffered.length) {
// in Chrome audio will continue to play for ~3s when we run out of video
// so we have to check that the video buffer did have some buffer in the
// past.
const lastVideoRange = findRange(videoBuffered, currentTime - 3);
const videoRange = findRange(videoBuffered, currentTime);
const audioRange = findRange(audioBuffered, currentTime);
if (audioRange.length && !videoRange.length && lastVideoRange.length) {
gap = {
start: lastVideoRange.end(0),
end: audioRange.end(0)
};
} // find a gap in muxed content.
} else {
const nextRange = findNextRange(videoBuffered, currentTime); // Even if there is no available next range, there is still a possibility we are
// stuck in a gap due to video underflow.
if (!nextRange.length) {
gap = this.gapFromVideoUnderflow_(videoBuffered, currentTime);
}
}
if (gap) {
this.logger_(`Encountered a gap in video from ${gap.start} to ${gap.end}. ` + `Seeking to current time ${currentTime}`);
return true;
}
return false;
}
/**
* Timer callback. If playback still has not proceeded, then we seek
* to the start of the next buffered region.
*
* @private
*/
skipTheGap_(scheduledCurrentTime) {
const buffered = this.tech_.buffered();
const currentTime = this.tech_.currentTime();
const nextRange = findNextRange(buffered, currentTime);
this.resetTimeUpdate_();
if (nextRange.length === 0 || currentTime !== scheduledCurrentTime) {
return;
}
this.logger_('skipTheGap_:', 'currentTime:', currentTime, 'scheduled currentTime:', scheduledCurrentTime, 'nextRange start:', nextRange.start(0)); // only seek if we still have not played
this.tech_.setCurrentTime(nextRange.start(0) + TIME_FUDGE_FACTOR);
const metadata = {
gapInfo: {
from: currentTime,
to: nextRange.start(0)
}
};
this.playlistController_.trigger({
type: 'gapjumped',
metadata
});
this.tech_.trigger({
type: 'usage',
name: 'vhs-gap-skip'
});
}
gapFromVideoUnderflow_(buffered, currentTime) {
// At least in Chrome, if there is a gap in the video buffer, the audio will continue
// playing for ~3 seconds after the video gap starts. This is done to account for
// video buffer underflow/underrun (note that this is not done when there is audio
// buffer underflow/underrun -- in that case the video will stop as soon as it
// encounters the gap, as audio stalls are more noticeable/jarring to a user than
// video stalls). The player's time will reflect the playthrough of audio, so the
// time will appear as if we are in a buffered region, even if we are stuck in a
// "gap."
//
// Example:
// video buffer: 0 => 10.1, 10.2 => 20
// audio buffer: 0 => 20
// overall buffer: 0 => 10.1, 10.2 => 20
// current time: 13
//
// Chrome's video froze at 10 seconds, where the video buffer encountered the gap,
// however, the audio continued playing until it reached ~3 seconds past the gap
// (13 seconds), at which point it stops as well. Since current time is past the
// gap, findNextRange will return no ranges.
//
// To check for this issue, we see if there is a gap that starts somewhere within
// a 3 second range (3 seconds +/- 1 second) back from our current time.
const gaps = findGaps(buffered);
for (let i = 0; i < gaps.length; i++) {
const start = gaps.start(i);
const end = gaps.end(i); // gap is starts no more than 4 seconds back
if (currentTime - start < 4 && currentTime - start > 2) {
return {
start,
end
};
}
}
return null;
}
}
const defaultOptions = {
errorInterval: 30,
getSource(next) {
const tech = this.tech({
IWillNotUseThisInPlugins: true
});
const sourceObj = tech.currentSource_ || this.currentSource();
return next(sourceObj);
}
};
/**
* Main entry point for the plugin
*
* @param {Player} player a reference to a videojs Player instance
* @param {Object} [options] an object with plugin options
* @private
*/
const initPlugin = function (player, options) {
let lastCalled = 0;
let seekTo = 0;
const localOptions = merge(defaultOptions, options);
player.ready(() => {
player.trigger({
type: 'usage',
name: 'vhs-error-reload-initialized'
});
});
/**
* Player modifications to perform that must wait until `loadedmetadata`
* has been triggered
*
* @private
*/
const loadedMetadataHandler = function () {
if (seekTo) {
player.currentTime(seekTo);
}
};
/**
* Set the source on the player element, play, and seek if necessary
*
* @param {Object} sourceObj An object specifying the source url and mime-type to play
* @private
*/
const setSource = function (sourceObj) {
if (sourceObj === null || sourceObj === undefined) {
return;
}
seekTo = player.duration() !== Infinity && player.currentTime() || 0;
player.one('loadedmetadata', loadedMetadataHandler);
player.src(sourceObj);
player.trigger({
type: 'usage',
name: 'vhs-error-reload'
});
player.play();
};
/**
* Attempt to get a source from either the built-in getSource function
* or a custom function provided via the options
*
* @private
*/
const errorHandler = function () {
// Do not attempt to reload the source if a source-reload occurred before
// 'errorInterval' time has elapsed since the last source-reload
if (Date.now() - lastCalled < localOptions.errorInterval * 1000) {
player.trigger({
type: 'usage',
name: 'vhs-error-reload-canceled'
});
return;
}
if (!localOptions.getSource || typeof localOptions.getSource !== 'function') {
videojs.log.error('ERROR: reloadSourceOnError - The option getSource must be a function!');
return;
}
lastCalled = Date.now();
return localOptions.getSource.call(player, setSource);
};
/**
* Unbind any event handlers that were bound by the plugin
*
* @private
*/
const cleanupEvents = function () {
player.off('loadedmetadata', loadedMetadataHandler);
player.off('error', errorHandler);
player.off('dispose', cleanupEvents);
};
/**
* Cleanup before re-initializing the plugin
*
* @param {Object} [newOptions] an object with plugin options
* @private
*/
const reinitPlugin = function (newOptions) {
cleanupEvents();
initPlugin(player, newOptions);
};
player.on('error', errorHandler);
player.on('dispose', cleanupEvents); // Overwrite the plugin function so that we can correctly cleanup before
// initializing the plugin
player.reloadSourceOnError = reinitPlugin;
};
/**
* Reload the source when an error is detected as long as there
* wasn't an error previously within the last 30 seconds
*
* @param {Object} [options] an object with plugin options
*/
const reloadSourceOnError = function (options) {
initPlugin(this, options);
};
var version$4 = "3.13.3";
var version$3 = "7.0.3";
var version$2 = "1.3.0";
var version$1 = "7.1.0";
var version = "4.0.1";
const Vhs = {
PlaylistLoader,
Playlist,
utils,
STANDARD_PLAYLIST_SELECTOR: lastBandwidthSelector,
INITIAL_PLAYLIST_SELECTOR: lowestBitrateCompatibleVariantSelector,
lastBandwidthSelector,
movingAverageBandwidthSelector,
comparePlaylistBandwidth,
comparePlaylistResolution,
xhr: xhrFactory()
}; // Define getter/setters for config properties
Object.keys(Config).forEach(prop => {
Object.defineProperty(Vhs, prop, {
get() {
videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
return Config[prop];
},
set(value) {
videojs.log.warn(`using Vhs.${prop} is UNSAFE be sure you know what you are doing`);
if (typeof value !== 'number' || value < 0) {
videojs.log.warn(`value of Vhs.${prop} must be greater than or equal to 0`);
return;
}
Config[prop] = value;
}
});
});
const LOCAL_STORAGE_KEY = 'videojs-vhs';
/**
* Updates the selectedIndex of the QualityLevelList when a mediachange happens in vhs.
*
* @param {QualityLevelList} qualityLevels The QualityLevelList to update.
* @param {PlaylistLoader} playlistLoader PlaylistLoader containing the new media info.
* @function handleVhsMediaChange
*/
const handleVhsMediaChange = function (qualityLevels, playlistLoader) {
const newPlaylist = playlistLoader.media();
let selectedIndex = -1;
for (let i = 0; i < qualityLevels.length; i++) {
if (qualityLevels[i].id === newPlaylist.id) {
selectedIndex = i;
break;
}
}
qualityLevels.selectedIndex_ = selectedIndex;
qualityLevels.trigger({
selectedIndex,
type: 'change'
});
};
/**
* Adds quality levels to list once playlist metadata is available
*
* @param {QualityLevelList} qualityLevels The QualityLevelList to attach events to.
* @param {Object} vhs Vhs object to listen to for media events.
* @function handleVhsLoadedMetadata
*/
const handleVhsLoadedMetadata = function (qualityLevels, vhs) {
vhs.representations().forEach(rep => {
qualityLevels.addQualityLevel(rep);
});
handleVhsMediaChange(qualityLevels, vhs.playlists);
}; // VHS is a source handler, not a tech. Make sure attempts to use it
// as one do not cause exceptions.
Vhs.canPlaySource = function () {
return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
};
const emeKeySystems = (keySystemOptions, mainPlaylist, audioPlaylist) => {
if (!keySystemOptions) {
return keySystemOptions;
}
let codecs = {};
if (mainPlaylist && mainPlaylist.attributes && mainPlaylist.attributes.CODECS) {
codecs = unwrapCodecList(parseCodecs(mainPlaylist.attributes.CODECS));
}
if (audioPlaylist && audioPlaylist.attributes && audioPlaylist.attributes.CODECS) {
codecs.audio = audioPlaylist.attributes.CODECS;
}
const videoContentType = getMimeForCodec(codecs.video);
const audioContentType = getMimeForCodec(codecs.audio); // upsert the content types based on the selected playlist
const keySystemContentTypes = {};
for (const keySystem in keySystemOptions) {
keySystemContentTypes[keySystem] = {};
if (audioContentType) {
keySystemContentTypes[keySystem].audioContentType = audioContentType;
}
if (videoContentType) {
keySystemContentTypes[keySystem].videoContentType = videoContentType;
} // Default to using the video playlist's PSSH even though they may be different, as
// videojs-contrib-eme will only accept one in the options.
//
// This shouldn't be an issue for most cases as early intialization will handle all
// unique PSSH values, and if they aren't, then encrypted events should have the
// specific information needed for the unique license.
if (mainPlaylist.contentProtection && mainPlaylist.contentProtection[keySystem] && mainPlaylist.contentProtection[keySystem].pssh) {
keySystemContentTypes[keySystem].pssh = mainPlaylist.contentProtection[keySystem].pssh;
} // videojs-contrib-eme accepts the option of specifying: 'com.some.cdm': 'url'
// so we need to prevent overwriting the URL entirely
if (typeof keySystemOptions[keySystem] === 'string') {
keySystemContentTypes[keySystem].url = keySystemOptions[keySystem];
}
}
return merge(keySystemOptions, keySystemContentTypes);
};
/**
* @typedef {Object} KeySystems
*
* keySystems configuration for https://github.com/videojs/videojs-contrib-eme
* Note: not all options are listed here.
*
* @property {Uint8Array} [pssh]
* Protection System Specific Header
*/
/**
* Goes through all the playlists and collects an array of KeySystems options objects
* containing each playlist's keySystems and their pssh values, if available.
*
* @param {Object[]} playlists
* The playlists to look through
* @param {string[]} keySystems
* The keySystems to collect pssh values for
*
* @return {KeySystems[]}
* An array of KeySystems objects containing available key systems and their
* pssh values
*/
const getAllPsshKeySystemsOptions = (playlists, keySystems) => {
return playlists.reduce((keySystemsArr, playlist) => {
if (!playlist.contentProtection) {
return keySystemsArr;
}
const keySystemsOptions = keySystems.reduce((keySystemsObj, keySystem) => {
const keySystemOptions = playlist.contentProtection[keySystem];
if (keySystemOptions && keySystemOptions.pssh) {
keySystemsObj[keySystem] = {
pssh: keySystemOptions.pssh
};
}
return keySystemsObj;
}, {});
if (Object.keys(keySystemsOptions).length) {
keySystemsArr.push(keySystemsOptions);
}
return keySystemsArr;
}, []);
};
/**
* Returns a promise that waits for the
* [eme plugin](https://github.com/videojs/videojs-contrib-eme) to create a key session.
*
* Works around https://bugs.chromium.org/p/chromium/issues/detail?id=895449 in non-IE11
* browsers.
*
* As per the above ticket, this is particularly important for Chrome, where, if
* unencrypted content is appended before encrypted content and the key session has not
* been created, a MEDIA_ERR_DECODE will be thrown once the encrypted content is reached
* during playback.
*
* @param {Object} player
* The player instance
* @param {Object[]} sourceKeySystems
* The key systems options from the player source
* @param {Object} [audioMedia]
* The active audio media playlist (optional)
* @param {Object[]} mainPlaylists
* The playlists found on the main playlist object
*
* @return {Object}
* Promise that resolves when the key session has been created
*/
const waitForKeySessionCreation = ({
player,
sourceKeySystems,
audioMedia,
mainPlaylists
}) => {
if (!player.eme.initializeMediaKeys) {
return Promise.resolve();
} // TODO should all audio PSSH values be initialized for DRM?
//
// All unique video rendition pssh values are initialized for DRM, but here only
// the initial audio playlist license is initialized. In theory, an encrypted
// event should be fired if the user switches to an alternative audio playlist
// where a license is required, but this case hasn't yet been tested. In addition, there
// may be many alternate audio playlists unlikely to be used (e.g., multiple different
// languages).
const playlists = audioMedia ? mainPlaylists.concat([audioMedia]) : mainPlaylists;
const keySystemsOptionsArr = getAllPsshKeySystemsOptions(playlists, Object.keys(sourceKeySystems));
const initializationFinishedPromises = [];
const keySessionCreatedPromises = []; // Since PSSH values are interpreted as initData, EME will dedupe any duplicates. The
// only place where it should not be deduped is for ms-prefixed APIs, but
// the existence of modern EME APIs in addition to
// ms-prefixed APIs on Edge should prevent this from being a concern.
// initializeMediaKeys also won't use the webkit-prefixed APIs.
keySystemsOptionsArr.forEach(keySystemsOptions => {
keySessionCreatedPromises.push(new Promise((resolve, reject) => {
player.tech_.one('keysessioncreated', resolve);
}));
initializationFinishedPromises.push(new Promise((resolve, reject) => {
player.eme.initializeMediaKeys({
keySystems: keySystemsOptions
}, err => {
if (err) {
reject(err);
return;
}
resolve();
});
}));
}); // The reasons Promise.race is chosen over Promise.any:
//
// * Promise.any is only available in Safari 14+.
// * None of these promises are expected to reject. If they do reject, it might be
// better here for the race to surface the rejection, rather than mask it by using
// Promise.any.
return Promise.race([
// If a session was previously created, these will all finish resolving without
// creating a new session, otherwise it will take until the end of all license
// requests, which is why the key session check is used (to make setup much faster).
Promise.all(initializationFinishedPromises),
// Once a single session is created, the browser knows DRM will be used.
Promise.race(keySessionCreatedPromises)]);
};
/**
* If the [eme](https://github.com/videojs/videojs-contrib-eme) plugin is available, and
* there are keySystems on the source, sets up source options to prepare the source for
* eme.
*
* @param {Object} player
* The player instance
* @param {Object[]} sourceKeySystems
* The key systems options from the player source
* @param {Object} media
* The active media playlist
* @param {Object} [audioMedia]
* The active audio media playlist (optional)
*
* @return {boolean}
* Whether or not options were configured and EME is available
*/
const setupEmeOptions = ({
player,
sourceKeySystems,
media,
audioMedia
}) => {
const sourceOptions = emeKeySystems(sourceKeySystems, media, audioMedia);
if (!sourceOptions) {
return false;
}
player.currentSource().keySystems = sourceOptions; // eme handles the rest of the setup, so if it is missing
// do nothing.
if (sourceOptions && !player.eme) {
videojs.log.warn('DRM encrypted source cannot be decrypted without a DRM plugin');
return false;
}
return true;
};
const getVhsLocalStorage = () => {
if (!window.localStorage) {
return null;
}
const storedObject = window.localStorage.getItem(LOCAL_STORAGE_KEY);
if (!storedObject) {
return null;
}
try {
return JSON.parse(storedObject);
} catch (e) {
// someone may have tampered with the value
return null;
}
};
const updateVhsLocalStorage = options => {
if (!window.localStorage) {
return false;
}
let objectToStore = getVhsLocalStorage();
objectToStore = objectToStore ? merge(objectToStore, options) : options;
try {
window.localStorage.setItem(LOCAL_STORAGE_KEY, JSON.stringify(objectToStore));
} catch (e) {
// Throws if storage is full (e.g., always on iOS 5+ Safari private mode, where
// storage is set to 0).
// https://developer.mozilla.org/en-US/docs/Web/API/Storage/setItem#Exceptions
// No need to perform any operation.
return false;
}
return objectToStore;
};
/**
* Parses VHS-supported media types from data URIs. See
* https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs
* for information on data URIs.
*
* @param {string} dataUri
* The data URI
*
* @return {string|Object}
* The parsed object/string, or the original string if no supported media type
* was found
*/
const expandDataUri = dataUri => {
if (dataUri.toLowerCase().indexOf('data:application/vnd.videojs.vhs+json,') === 0) {
return JSON.parse(dataUri.substring(dataUri.indexOf(',') + 1));
} // no known case for this data URI, return the string as-is
return dataUri;
};
/**
* Adds a request hook to an xhr object
*
* @param {Object} xhr object to add the onRequest hook to
* @param {function} callback hook function for an xhr request
*/
const addOnRequestHook = (xhr, callback) => {
if (!xhr._requestCallbackSet) {
xhr._requestCallbackSet = new Set();
}
xhr._requestCallbackSet.add(callback);
};
/**
* Adds a response hook to an xhr object
*
* @param {Object} xhr object to add the onResponse hook to
* @param {function} callback hook function for an xhr response
*/
const addOnResponseHook = (xhr, callback) => {
if (!xhr._responseCallbackSet) {
xhr._responseCallbackSet = new Set();
}
xhr._responseCallbackSet.add(callback);
};
/**
* Removes a request hook on an xhr object, deletes the onRequest set if empty.
*
* @param {Object} xhr object to remove the onRequest hook from
* @param {function} callback hook function to remove
*/
const removeOnRequestHook = (xhr, callback) => {
if (!xhr._requestCallbackSet) {
return;
}
xhr._requestCallbackSet.delete(callback);
if (!xhr._requestCallbackSet.size) {
delete xhr._requestCallbackSet;
}
};
/**
* Removes a response hook on an xhr object, deletes the onResponse set if empty.
*
* @param {Object} xhr object to remove the onResponse hook from
* @param {function} callback hook function to remove
*/
const removeOnResponseHook = (xhr, callback) => {
if (!xhr._responseCallbackSet) {
return;
}
xhr._responseCallbackSet.delete(callback);
if (!xhr._responseCallbackSet.size) {
delete xhr._responseCallbackSet;
}
};
/**
* Whether the browser has built-in HLS support.
*/
Vhs.supportsNativeHls = function () {
if (!document || !document.createElement) {
return false;
}
const video = document.createElement('video'); // native HLS is definitely not supported if HTML5 video isn't
if (!videojs.getTech('Html5').isSupported()) {
return false;
} // HLS manifests can go by many mime-types
const canPlay = [
// Apple santioned
'application/vnd.apple.mpegurl',
// Apple sanctioned for backwards compatibility
'audio/mpegurl',
// Very common
'audio/x-mpegurl',
// Very common
'application/x-mpegurl',
// Included for completeness
'video/x-mpegurl', 'video/mpegurl', 'application/mpegurl'];
return canPlay.some(function (canItPlay) {
return /maybe|probably/i.test(video.canPlayType(canItPlay));
});
}();
Vhs.supportsNativeDash = function () {
if (!document || !document.createElement || !videojs.getTech('Html5').isSupported()) {
return false;
}
return /maybe|probably/i.test(document.createElement('video').canPlayType('application/dash+xml'));
}();
Vhs.supportsTypeNatively = type => {
if (type === 'hls') {
return Vhs.supportsNativeHls;
}
if (type === 'dash') {
return Vhs.supportsNativeDash;
}
return false;
};
/**
* VHS is a source handler, not a tech. Make sure attempts to use it
* as one do not cause exceptions.
*/
Vhs.isSupported = function () {
return videojs.log.warn('VHS is no longer a tech. Please remove it from ' + 'your player\'s techOrder.');
};
/**
* A global function for setting an onRequest hook
*
* @param {function} callback for request modifiction
*/
Vhs.xhr.onRequest = function (callback) {
addOnRequestHook(Vhs.xhr, callback);
};
/**
* A global function for setting an onResponse hook
*
* @param {callback} callback for response data retrieval
*/
Vhs.xhr.onResponse = function (callback) {
addOnResponseHook(Vhs.xhr, callback);
};
/**
* Deletes a global onRequest callback if it exists
*
* @param {function} callback to delete from the global set
*/
Vhs.xhr.offRequest = function (callback) {
removeOnRequestHook(Vhs.xhr, callback);
};
/**
* Deletes a global onResponse callback if it exists
*
* @param {function} callback to delete from the global set
*/
Vhs.xhr.offResponse = function (callback) {
removeOnResponseHook(Vhs.xhr, callback);
};
const Component = videojs.getComponent('Component');
/**
* The Vhs Handler object, where we orchestrate all of the parts
* of VHS to interact with video.js
*
* @class VhsHandler
* @extends videojs.Component
* @param {Object} source the soruce object
* @param {Tech} tech the parent tech object
* @param {Object} options optional and required options
*/
class VhsHandler extends Component {
constructor(source, tech, options) {
super(tech, options.vhs); // if a tech level `initialBandwidth` option was passed
// use that over the VHS level `bandwidth` option
if (typeof options.initialBandwidth === 'number') {
this.options_.bandwidth = options.initialBandwidth;
}
this.logger_ = logger('VhsHandler'); // we need access to the player in some cases,
// so, get it from Video.js via the `playerId`
if (tech.options_ && tech.options_.playerId) {
const _player = videojs.getPlayer(tech.options_.playerId);
this.player_ = _player;
}
this.tech_ = tech;
this.source_ = source;
this.stats = {};
this.ignoreNextSeekingEvent_ = false;
this.setOptions_();
if (this.options_.overrideNative && tech.overrideNativeAudioTracks && tech.overrideNativeVideoTracks) {
tech.overrideNativeAudioTracks(true);
tech.overrideNativeVideoTracks(true);
} else if (this.options_.overrideNative && (tech.featuresNativeVideoTracks || tech.featuresNativeAudioTracks)) {
// overriding native VHS only works if audio tracks have been emulated
// error early if we're misconfigured
throw new Error('Overriding native VHS requires emulated tracks. ' + 'See https://git.io/vMpjB');
} // listen for fullscreenchange events for this player so that we
// can adjust our quality selection quickly
this.on(document, ['fullscreenchange', 'webkitfullscreenchange', 'mozfullscreenchange', 'MSFullscreenChange'], event => {
const fullscreenElement = document.fullscreenElement || document.webkitFullscreenElement || document.mozFullScreenElement || document.msFullscreenElement;
if (fullscreenElement && fullscreenElement.contains(this.tech_.el())) {
this.playlistController_.fastQualityChange_();
} else {
// When leaving fullscreen, since the in page pixel dimensions should be smaller
// than full screen, see if there should be a rendition switch down to preserve
// bandwidth.
this.playlistController_.checkABR_();
}
});
this.on(this.tech_, 'seeking', function () {
if (this.ignoreNextSeekingEvent_) {
this.ignoreNextSeekingEvent_ = false;
return;
}
this.setCurrentTime(this.tech_.currentTime());
});
this.on(this.tech_, 'error', function () {
// verify that the error was real and we are loaded
// enough to have pc loaded.
if (this.tech_.error() && this.playlistController_) {
this.playlistController_.pauseLoading();
}
});
this.on(this.tech_, 'play', this.play);
}
/**
* Set VHS options based on options from configuration, as well as partial
* options to be passed at a later time.
*
* @param {Object} options A partial chunk of config options
*/
setOptions_(options = {}) {
this.options_ = merge(this.options_, options); // defaults
this.options_.withCredentials = this.options_.withCredentials || false;
this.options_.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions === false ? false : true;
this.options_.useDevicePixelRatio = this.options_.useDevicePixelRatio || false;
this.options_.useBandwidthFromLocalStorage = typeof this.source_.useBandwidthFromLocalStorage !== 'undefined' ? this.source_.useBandwidthFromLocalStorage : this.options_.useBandwidthFromLocalStorage || false;
this.options_.useForcedSubtitles = this.options_.useForcedSubtitles || false;
this.options_.useNetworkInformationApi = this.options_.useNetworkInformationApi || false;
this.options_.useDtsForTimestampOffset = this.options_.useDtsForTimestampOffset || false;
this.options_.customTagParsers = this.options_.customTagParsers || [];
this.options_.customTagMappers = this.options_.customTagMappers || [];
this.options_.cacheEncryptionKeys = this.options_.cacheEncryptionKeys || false;
this.options_.llhls = this.options_.llhls === false ? false : true;
this.options_.bufferBasedABR = this.options_.bufferBasedABR || false;
if (typeof this.options_.playlistExclusionDuration !== 'number') {
this.options_.playlistExclusionDuration = 60;
}
if (typeof this.options_.bandwidth !== 'number') {
if (this.options_.useBandwidthFromLocalStorage) {
const storedObject = getVhsLocalStorage();
if (storedObject && storedObject.bandwidth) {
this.options_.bandwidth = storedObject.bandwidth;
this.tech_.trigger({
type: 'usage',
name: 'vhs-bandwidth-from-local-storage'
});
}
if (storedObject && storedObject.throughput) {
this.options_.throughput = storedObject.throughput;
this.tech_.trigger({
type: 'usage',
name: 'vhs-throughput-from-local-storage'
});
}
}
} // if bandwidth was not set by options or pulled from local storage, start playlist
// selection at a reasonable bandwidth
if (typeof this.options_.bandwidth !== 'number') {
this.options_.bandwidth = Config.INITIAL_BANDWIDTH;
} // If the bandwidth number is unchanged from the initial setting
// then this takes precedence over the enableLowInitialPlaylist option
this.options_.enableLowInitialPlaylist = this.options_.enableLowInitialPlaylist && this.options_.bandwidth === Config.INITIAL_BANDWIDTH; // grab options passed to player.src
['withCredentials', 'useDevicePixelRatio', 'customPixelRatio', 'limitRenditionByPlayerDimensions', 'bandwidth', 'customTagParsers', 'customTagMappers', 'cacheEncryptionKeys', 'playlistSelector', 'initialPlaylistSelector', 'bufferBasedABR', 'liveRangeSafeTimeDelta', 'llhls', 'useForcedSubtitles', 'useNetworkInformationApi', 'useDtsForTimestampOffset', 'exactManifestTimings', 'leastPixelDiffSelector'].forEach(option => {
if (typeof this.source_[option] !== 'undefined') {
this.options_[option] = this.source_[option];
}
});
this.limitRenditionByPlayerDimensions = this.options_.limitRenditionByPlayerDimensions;
this.useDevicePixelRatio = this.options_.useDevicePixelRatio;
const customPixelRatio = this.options_.customPixelRatio; // Ensure the custom pixel ratio is a number greater than or equal to 0
if (typeof customPixelRatio === 'number' && customPixelRatio >= 0) {
this.customPixelRatio = customPixelRatio;
}
} // alias for public method to set options
setOptions(options = {}) {
this.setOptions_(options);
}
/**
* called when player.src gets called, handle a new source
*
* @param {Object} src the source object to handle
*/
src(src, type) {
// do nothing if the src is falsey
if (!src) {
return;
}
this.setOptions_(); // add main playlist controller options
this.options_.src = expandDataUri(this.source_.src);
this.options_.tech = this.tech_;
this.options_.externVhs = Vhs;
this.options_.sourceType = simpleTypeFromSourceType(type); // Whenever we seek internally, we should update the tech
this.options_.seekTo = time => {
this.tech_.setCurrentTime(time);
}; // pass player to allow for player level eventing on construction.
this.options_.player_ = this.player_;
this.playlistController_ = new PlaylistController(this.options_);
const playbackWatcherOptions = merge({
liveRangeSafeTimeDelta: SAFE_TIME_DELTA
}, this.options_, {
seekable: () => this.seekable(),
media: () => this.playlistController_.media(),
playlistController: this.playlistController_
});
this.playbackWatcher_ = new PlaybackWatcher(playbackWatcherOptions);
this.attachStreamingEventListeners_();
this.playlistController_.on('error', () => {
const player = videojs.players[this.tech_.options_.playerId];
let error = this.playlistController_.error;
if (typeof error === 'object' && !error.code) {
error.code = 3;
} else if (typeof error === 'string') {
error = {
message: error,
code: 3
};
}
player.error(error);
});
const defaultSelector = this.options_.bufferBasedABR ? Vhs.movingAverageBandwidthSelector(0.55) : Vhs.STANDARD_PLAYLIST_SELECTOR; // `this` in selectPlaylist should be the VhsHandler for backwards
// compatibility with < v2
this.playlistController_.selectPlaylist = this.selectPlaylist ? this.selectPlaylist.bind(this) : defaultSelector.bind(this);
this.playlistController_.selectInitialPlaylist = Vhs.INITIAL_PLAYLIST_SELECTOR.bind(this); // re-expose some internal objects for backwards compatibility with < v2
this.playlists = this.playlistController_.mainPlaylistLoader_;
this.mediaSource = this.playlistController_.mediaSource; // Proxy assignment of some properties to the main playlist
// controller. Using a custom property for backwards compatibility
// with < v2
Object.defineProperties(this, {
selectPlaylist: {
get() {
return this.playlistController_.selectPlaylist;
},
set(selectPlaylist) {
this.playlistController_.selectPlaylist = selectPlaylist.bind(this);
}
},
throughput: {
get() {
return this.playlistController_.mainSegmentLoader_.throughput.rate;
},
set(throughput) {
this.playlistController_.mainSegmentLoader_.throughput.rate = throughput; // By setting `count` to 1 the throughput value becomes the starting value
// for the cumulative average
this.playlistController_.mainSegmentLoader_.throughput.count = 1;
}
},
bandwidth: {
get() {
let playerBandwidthEst = this.playlistController_.mainSegmentLoader_.bandwidth;
const networkInformation = window.navigator.connection || window.navigator.mozConnection || window.navigator.webkitConnection;
const tenMbpsAsBitsPerSecond = 10e6;
if (this.options_.useNetworkInformationApi && networkInformation) {
// downlink returns Mbps
// https://developer.mozilla.org/en-US/docs/Web/API/NetworkInformation/downlink
const networkInfoBandwidthEstBitsPerSec = networkInformation.downlink * 1000 * 1000; // downlink maxes out at 10 Mbps. In the event that both networkInformationApi and the player
// estimate a bandwidth greater than 10 Mbps, use the larger of the two estimates to ensure that
// high quality streams are not filtered out.
if (networkInfoBandwidthEstBitsPerSec >= tenMbpsAsBitsPerSecond && playerBandwidthEst >= tenMbpsAsBitsPerSecond) {
playerBandwidthEst = Math.max(playerBandwidthEst, networkInfoBandwidthEstBitsPerSec);
} else {
playerBandwidthEst = networkInfoBandwidthEstBitsPerSec;
}
}
return playerBandwidthEst;
},
set(bandwidth) {
this.playlistController_.mainSegmentLoader_.bandwidth = bandwidth; // setting the bandwidth manually resets the throughput counter
// `count` is set to zero that current value of `rate` isn't included
// in the cumulative average
this.playlistController_.mainSegmentLoader_.throughput = {
rate: 0,
count: 0
};
}
},
/**
* `systemBandwidth` is a combination of two serial processes bit-rates. The first
* is the network bitrate provided by `bandwidth` and the second is the bitrate of
* the entire process after that - decryption, transmuxing, and appending - provided
* by `throughput`.
*
* Since the two process are serial, the overall system bandwidth is given by:
* sysBandwidth = 1 / (1 / bandwidth + 1 / throughput)
*/
systemBandwidth: {
get() {
const invBandwidth = 1 / (this.bandwidth || 1);
let invThroughput;
if (this.throughput > 0) {
invThroughput = 1 / this.throughput;
} else {
invThroughput = 0;
}
const systemBitrate = Math.floor(1 / (invBandwidth + invThroughput));
return systemBitrate;
},
set() {
videojs.log.error('The "systemBandwidth" property is read-only');
}
}
});
if (this.options_.bandwidth) {
this.bandwidth = this.options_.bandwidth;
}
if (this.options_.throughput) {
this.throughput = this.options_.throughput;
}
Object.defineProperties(this.stats, {
bandwidth: {
get: () => this.bandwidth || 0,
enumerable: true
},
mediaRequests: {
get: () => this.playlistController_.mediaRequests_() || 0,
enumerable: true
},
mediaRequestsAborted: {
get: () => this.playlistController_.mediaRequestsAborted_() || 0,
enumerable: true
},
mediaRequestsTimedout: {
get: () => this.playlistController_.mediaRequestsTimedout_() || 0,
enumerable: true
},
mediaRequestsErrored: {
get: () => this.playlistController_.mediaRequestsErrored_() || 0,
enumerable: true
},
mediaTransferDuration: {
get: () => this.playlistController_.mediaTransferDuration_() || 0,
enumerable: true
},
mediaBytesTransferred: {
get: () => this.playlistController_.mediaBytesTransferred_() || 0,
enumerable: true
},
mediaSecondsLoaded: {
get: () => this.playlistController_.mediaSecondsLoaded_() || 0,
enumerable: true
},
mediaAppends: {
get: () => this.playlistController_.mediaAppends_() || 0,
enumerable: true
},
mainAppendsToLoadedData: {
get: () => this.playlistController_.mainAppendsToLoadedData_() || 0,
enumerable: true
},
audioAppendsToLoadedData: {
get: () => this.playlistController_.audioAppendsToLoadedData_() || 0,
enumerable: true
},
appendsToLoadedData: {
get: () => this.playlistController_.appendsToLoadedData_() || 0,
enumerable: true
},
timeToLoadedData: {
get: () => this.playlistController_.timeToLoadedData_() || 0,
enumerable: true
},
buffered: {
get: () => timeRangesToArray(this.tech_.buffered()),
enumerable: true
},
currentTime: {
get: () => this.tech_.currentTime(),
enumerable: true
},
currentSource: {
get: () => this.tech_.currentSource_,
enumerable: true
},
currentTech: {
get: () => this.tech_.name_,
enumerable: true
},
duration: {
get: () => this.tech_.duration(),
enumerable: true
},
main: {
get: () => this.playlists.main,
enumerable: true
},
playerDimensions: {
get: () => this.tech_.currentDimensions(),
enumerable: true
},
seekable: {
get: () => timeRangesToArray(this.tech_.seekable()),
enumerable: true
},
timestamp: {
get: () => Date.now(),
enumerable: true
},
videoPlaybackQuality: {
get: () => this.tech_.getVideoPlaybackQuality(),
enumerable: true
}
});
this.tech_.one('canplay', this.playlistController_.setupFirstPlay.bind(this.playlistController_));
this.tech_.on('bandwidthupdate', () => {
if (this.options_.useBandwidthFromLocalStorage) {
updateVhsLocalStorage({
bandwidth: this.bandwidth,
throughput: Math.round(this.throughput)
});
}
});
this.playlistController_.on('selectedinitialmedia', () => {
// Add the manual rendition mix-in to VhsHandler
renditionSelectionMixin(this);
});
this.playlistController_.sourceUpdater_.on('createdsourcebuffers', () => {
this.setupEme_();
}); // the bandwidth of the primary segment loader is our best
// estimate of overall bandwidth
this.on(this.playlistController_, 'progress', function () {
this.tech_.trigger('progress');
}); // In the live case, we need to ignore the very first `seeking` event since
// that will be the result of the seek-to-live behavior
this.on(this.playlistController_, 'firstplay', function () {
this.ignoreNextSeekingEvent_ = true;
});
this.setupQualityLevels_(); // do nothing if the tech has been disposed already
// this can occur if someone sets the src in player.ready(), for instance
if (!this.tech_.el()) {
return;
}
this.mediaSourceUrl_ = window.URL.createObjectURL(this.playlistController_.mediaSource);
this.tech_.src(this.mediaSourceUrl_);
}
createKeySessions_() {
const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
this.logger_('waiting for EME key session creation');
waitForKeySessionCreation({
player: this.player_,
sourceKeySystems: this.source_.keySystems,
audioMedia: audioPlaylistLoader && audioPlaylistLoader.media(),
mainPlaylists: this.playlists.main.playlists
}).then(() => {
this.logger_('created EME key session');
this.playlistController_.sourceUpdater_.initializedEme();
}).catch(err => {
this.logger_('error while creating EME key session', err);
this.player_.error({
message: 'Failed to initialize media keys for EME',
code: 3
});
});
}
handleWaitingForKey_() {
// If waitingforkey is fired, it's possible that the data that's necessary to retrieve
// the key is in the manifest. While this should've happened on initial source load, it
// may happen again in live streams where the keys change, and the manifest info
// reflects the update.
//
// Because videojs-contrib-eme compares the PSSH data we send to that of PSSH data it's
// already requested keys for, we don't have to worry about this generating extraneous
// requests.
this.logger_('waitingforkey fired, attempting to create any new key sessions');
this.createKeySessions_();
}
/**
* If necessary and EME is available, sets up EME options and waits for key session
* creation.
*
* This function also updates the source updater so taht it can be used, as for some
* browsers, EME must be configured before content is appended (if appending unencrypted
* content before encrypted content).
*/
setupEme_() {
const audioPlaylistLoader = this.playlistController_.mediaTypes_.AUDIO.activePlaylistLoader;
const didSetupEmeOptions = setupEmeOptions({
player: this.player_,
sourceKeySystems: this.source_.keySystems,
media: this.playlists.media(),
audioMedia: audioPlaylistLoader && audioPlaylistLoader.media()
});
this.player_.tech_.on('keystatuschange', e => {
this.playlistController_.updatePlaylistByKeyStatus(e.keyId, e.status);
});
this.handleWaitingForKey_ = this.handleWaitingForKey_.bind(this);
this.player_.tech_.on('waitingforkey', this.handleWaitingForKey_);
if (!didSetupEmeOptions) {
// If EME options were not set up, we've done all we could to initialize EME.
this.playlistController_.sourceUpdater_.initializedEme();
return;
}
this.createKeySessions_();
}
/**
* Initializes the quality levels and sets listeners to update them.
*
* @method setupQualityLevels_
* @private
*/
setupQualityLevels_() {
const player = videojs.players[this.tech_.options_.playerId]; // if there isn't a player or there isn't a qualityLevels plugin
// or qualityLevels_ listeners have already been setup, do nothing.
if (!player || !player.qualityLevels || this.qualityLevels_) {
return;
}
this.qualityLevels_ = player.qualityLevels();
this.playlistController_.on('selectedinitialmedia', () => {
handleVhsLoadedMetadata(this.qualityLevels_, this);
});
this.playlists.on('mediachange', () => {
handleVhsMediaChange(this.qualityLevels_, this.playlists);
});
}
/**
* return the version
*/
static version() {
return {
'@videojs/http-streaming': version$4,
'mux.js': version$3,
'mpd-parser': version$2,
'm3u8-parser': version$1,
'aes-decrypter': version
};
}
/**
* return the version
*/
version() {
return this.constructor.version();
}
canChangeType() {
return SourceUpdater.canChangeType();
}
/**
* Begin playing the video.
*/
play() {
this.playlistController_.play();
}
/**
* a wrapper around the function in PlaylistController
*/
setCurrentTime(currentTime) {
this.playlistController_.setCurrentTime(currentTime);
}
/**
* a wrapper around the function in PlaylistController
*/
duration() {
return this.playlistController_.duration();
}
/**
* a wrapper around the function in PlaylistController
*/
seekable() {
return this.playlistController_.seekable();
}
/**
* Abort all outstanding work and cleanup.
*/
dispose() {
if (this.playbackWatcher_) {
this.playbackWatcher_.dispose();
}
if (this.playlistController_) {
this.playlistController_.dispose();
}
if (this.qualityLevels_) {
this.qualityLevels_.dispose();
}
if (this.tech_ && this.tech_.vhs) {
delete this.tech_.vhs;
}
if (this.mediaSourceUrl_ && window.URL.revokeObjectURL) {
window.URL.revokeObjectURL(this.mediaSourceUrl_);
this.mediaSourceUrl_ = null;
}
if (this.tech_) {
this.tech_.off('waitingforkey', this.handleWaitingForKey_);
}
super.dispose();
}
convertToProgramTime(time, callback) {
return getProgramTime({
playlist: this.playlistController_.media(),
time,
callback
});
} // the player must be playing before calling this
seekToProgramTime(programTime, callback, pauseAfterSeek = true, retryCount = 2) {
return seekToProgramTime({
programTime,
playlist: this.playlistController_.media(),
retryCount,
pauseAfterSeek,
seekTo: this.options_.seekTo,
tech: this.options_.tech,
callback
});
}
/**
* Adds the onRequest, onResponse, offRequest and offResponse functions
* to the VhsHandler xhr Object.
*/
setupXhrHooks_() {
/**
* A player function for setting an onRequest hook
*
* @param {function} callback for request modifiction
*/
this.xhr.onRequest = callback => {
addOnRequestHook(this.xhr, callback);
};
/**
* A player function for setting an onResponse hook
*
* @param {callback} callback for response data retrieval
*/
this.xhr.onResponse = callback => {
addOnResponseHook(this.xhr, callback);
};
/**
* Deletes a player onRequest callback if it exists
*
* @param {function} callback to delete from the player set
*/
this.xhr.offRequest = callback => {
removeOnRequestHook(this.xhr, callback);
};
/**
* Deletes a player onResponse callback if it exists
*
* @param {function} callback to delete from the player set
*/
this.xhr.offResponse = callback => {
removeOnResponseHook(this.xhr, callback);
}; // Trigger an event on the player to notify the user that vhs is ready to set xhr hooks.
// This allows hooks to be set before the source is set to vhs when handleSource is called.
this.player_.trigger('xhr-hooks-ready');
}
attachStreamingEventListeners_() {
const playlistControllerEvents = ['seekablerangeschanged', 'bufferedrangeschanged', 'contentsteeringloadstart', 'contentsteeringloadcomplete', 'contentsteeringparsed'];
const playbackWatcher = ['gapjumped', 'playedrangeschanged']; // re-emit streaming events and payloads on the player.
playlistControllerEvents.forEach(eventName => {
this.playlistController_.on(eventName, metadata => {
this.player_.trigger(_extends$1({}, metadata));
});
});
playbackWatcher.forEach(eventName => {
this.playbackWatcher_.on(eventName, metadata => {
this.player_.trigger(_extends$1({}, metadata));
});
});
}
}
/**
* The Source Handler object, which informs video.js what additional
* MIME types are supported and sets up playback. It is registered
* automatically to the appropriate tech based on the capabilities of
* the browser it is running in. It is not necessary to use or modify
* this object in normal usage.
*/
const VhsSourceHandler = {
name: 'videojs-http-streaming',
VERSION: version$4,
canHandleSource(srcObj, options = {}) {
const localOptions = merge(videojs.options, options);
return VhsSourceHandler.canPlayType(srcObj.type, localOptions);
},
handleSource(source, tech, options = {}) {
const localOptions = merge(videojs.options, options);
tech.vhs = new VhsHandler(source, tech, localOptions);
tech.vhs.xhr = xhrFactory();
tech.vhs.setupXhrHooks_();
tech.vhs.src(source.src, source.type);
return tech.vhs;
},
canPlayType(type, options) {
const simpleType = simpleTypeFromSourceType(type);
if (!simpleType) {
return '';
}
const overrideNative = VhsSourceHandler.getOverrideNative(options);
const supportsTypeNatively = Vhs.supportsTypeNatively(simpleType);
const canUseMsePlayback = !supportsTypeNatively || overrideNative;
return canUseMsePlayback ? 'maybe' : '';
},
getOverrideNative(options = {}) {
const {
vhs = {}
} = options;
const defaultOverrideNative = !(videojs.browser.IS_ANY_SAFARI || videojs.browser.IS_IOS);
const {
overrideNative = defaultOverrideNative
} = vhs;
return overrideNative;
}
};
/**
* Check to see if the native MediaSource object exists and supports
* an MP4 container with both H.264 video and AAC-LC audio.
*
* @return {boolean} if native media sources are supported
*/
const supportsNativeMediaSources = () => {
return browserSupportsCodec('avc1.4d400d,mp4a.40.2');
}; // register source handlers with the appropriate techs
if (supportsNativeMediaSources()) {
videojs.getTech('Html5').registerSourceHandler(VhsSourceHandler, 0);
}
videojs.VhsHandler = VhsHandler;
videojs.VhsSourceHandler = VhsSourceHandler;
videojs.Vhs = Vhs;
if (!videojs.use) {
videojs.registerComponent('Vhs', Vhs);
}
videojs.options.vhs = videojs.options.vhs || {};
if (!videojs.getPlugin || !videojs.getPlugin('reloadSourceOnError')) {
videojs.registerPlugin('reloadSourceOnError', reloadSourceOnError);
}
return videojs;
}));