|
Server : Apache System : Linux iZ2vcgyutqttsd1p850kl8Z 3.10.0-1160.92.1.el7.x86_64 #1 SMP Tue Jun 20 11:48:01 UTC 2023 x86_64 User : www ( 1000) PHP Version : 5.6.40 Disable Function : passthru,exec,system,putenv,chroot,chgrp,chown,shell_exec,popen,proc_open,pcntl_exec,ini_alter,ini_restore,dl,openlog,syslog,readlink,symlink,popepassthru,pcntl_alarm,pcntl_fork,pcntl_waitpid,pcntl_wait,pcntl_wifexited,pcntl_wifstopped,pcntl_wifsignaled,pcntl_wifcontinued,pcntl_wexitstatus,pcntl_wtermsig,pcntl_wstopsig,pcntl_signal,pcntl_signal_dispatch,pcntl_get_last_error,pcntl_strerror,pcntl_sigprocmask,pcntl_sigwaitinfo,pcntl_sigtimedwait,pcntl_exec,pcntl_getpriority,pcntl_setpriority,imap_open,apache_setenv Directory : /www/wwwroot/saimikebio.com/mobile/js/chplayer/hls/ |
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.Hls = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
} else {
// At least give some kind of context to the user
var err = new Error('Uncaught, unspecified "error" event. (' + er + ')');
err.context = er;
throw err;
}
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
args = Array.prototype.slice.call(arguments, 1);
handler.apply(this, args);
}
} else if (isObject(handler)) {
args = Array.prototype.slice.call(arguments, 1);
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
if (typeof console.trace === 'function') {
// not supported in IE 10
console.trace();
}
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else if (listeners) {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.prototype.listenerCount = function(type) {
if (this._events) {
var evlistener = this._events[type];
if (isFunction(evlistener))
return 1;
else if (evlistener)
return evlistener.length;
}
return 0;
};
EventEmitter.listenerCount = function(emitter, type) {
return emitter.listenerCount(type);
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],2:[function(_dereq_,module,exports){
// see https://tools.ietf.org/html/rfc1808
/* jshint ignore:start */
(function(root) {
/* jshint ignore:end */
var URL_REGEX = /^((?:[^\/;?#]+:)?)(\/\/[^\/\;?#]*)?(.*?)??(;.*?)?(\?.*?)?(#.*?)?$/;
var FIRST_SEGMENT_REGEX = /^([^\/;?#]*)(.*)$/;
var SLASH_DOT_REGEX = /(?:\/|^)\.(?=\/)/g;
var SLASH_DOT_DOT_REGEX = /(?:\/|^)\.\.\/(?!\.\.\/).*?(?=\/)/g;
var URLToolkit = { // jshint ignore:line
// 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 (default, 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 = this.parseURL(baseURL);
if (!baseParts) {
throw new Error('Error trying to parse base URL.');
}
basePartsForNormalise.path = URLToolkit.normalizePath(basePartsForNormalise.path);
return URLToolkit.buildURLFromParts(basePartsForNormalise);
}
var relativeParts = this.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 = this.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 <net_loc> is non-empty, we skip to
// Step 7. Otherwise, the embedded URL inherits the <net_loc>
// (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 <params> is non-empty, we skip to
// step 7; otherwise, it inherits the <params> of the base
// URL (if any) and
if (!relativeParts.params) {
builtParts.params = baseParts.params;
// 5b) if the embedded URL's <query> is non-empty, we skip to
// step 7; otherwise, it inherits the <query> 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 "<segment>/../", where <segment> 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 "<segment>/..", where <segment> is a
// complete path segment not equal to "..", that
// "<segment>/.." is removed.
while (path.length !== (path = path.replace(SLASH_DOT_DOT_REGEX, '')).length) {} // jshint ignore:line
return path.split('').reverse().join('');
},
buildURLFromParts: function(parts) {
return parts.scheme + parts.netLoc + parts.path + parts.params + parts.query + parts.fragment;
}
};
/* jshint ignore:start */
if(typeof exports === 'object' && typeof module === 'object')
module.exports = URLToolkit;
else if(typeof define === 'function' && define.amd)
define([], function() { return URLToolkit; });
else if(typeof exports === 'object')
exports["URLToolkit"] = URLToolkit;
else
root["URLToolkit"] = URLToolkit;
})(this);
/* jshint ignore:end */
},{}],3:[function(_dereq_,module,exports){
var bundleFn = arguments[3];
var sources = arguments[4];
var cache = arguments[5];
var stringify = JSON.stringify;
module.exports = function (fn, options) {
var wkey;
var cacheKeys = Object.keys(cache);
for (var i = 0, l = cacheKeys.length; i < l; i++) {
var key = cacheKeys[i];
var exp = cache[key].exports;
// Using babel as a transpiler to use esmodule, the export will always
// be an object with the default export as a property of it. To ensure
// the existing api and babel esmodule exports are both supported we
// check for both
if (exp === fn || exp && exp.default === fn) {
wkey = key;
break;
}
}
if (!wkey) {
wkey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
var wcache = {};
for (var i = 0, l = cacheKeys.length; i < l; i++) {
var key = cacheKeys[i];
wcache[key] = key;
}
sources[wkey] = [
Function(['require','module','exports'], '(' + fn + ')(self)'),
wcache
];
}
var skey = Math.floor(Math.pow(16, 8) * Math.random()).toString(16);
var scache = {}; scache[wkey] = wkey;
sources[skey] = [
Function(['require'], (
// try to call default if defined to also support babel esmodule
// exports
'var f = require(' + stringify(wkey) + ');' +
'(f.default ? f.default : f)(self);'
)),
scache
];
var workerSources = {};
resolveSources(skey);
function resolveSources(key) {
workerSources[key] = true;
for (var depPath in sources[key][1]) {
var depKey = sources[key][1][depPath];
if (!workerSources[depKey]) {
resolveSources(depKey);
}
}
}
var src = '(' + bundleFn + ')({'
+ Object.keys(workerSources).map(function (key) {
return stringify(key) + ':['
+ sources[key][0]
+ ',' + stringify(sources[key][1]) + ']'
;
}).join(',')
+ '},{},[' + stringify(skey) + '])'
;
var URL = window.URL || window.webkitURL || window.mozURL || window.msURL;
var blob = new Blob([src], { type: 'text/javascript' });
if (options && options.bare) { return blob; }
var workerUrl = URL.createObjectURL(blob);
var worker = new Worker(workerUrl);
worker.objectURL = workerUrl;
return worker;
};
},{}],4:[function(_dereq_,module,exports){
/**
* HLS config
*/
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.hlsDefaultConfig = undefined;
var _abrController = _dereq_(5);
var _abrController2 = _interopRequireDefault(_abrController);
var _bufferController = _dereq_(8);
var _bufferController2 = _interopRequireDefault(_bufferController);
var _capLevelController = _dereq_(9);
var _capLevelController2 = _interopRequireDefault(_capLevelController);
var _fpsController = _dereq_(10);
var _fpsController2 = _interopRequireDefault(_fpsController);
var _xhrLoader = _dereq_(55);
var _xhrLoader2 = _interopRequireDefault(_xhrLoader);
var _audioTrackController = _dereq_(7);
var _audioTrackController2 = _interopRequireDefault(_audioTrackController);
var _audioStreamController = _dereq_(6);
var _audioStreamController2 = _interopRequireDefault(_audioStreamController);
var _cues = _dereq_(47);
var _cues2 = _interopRequireDefault(_cues);
var _timelineController = _dereq_(15);
var _timelineController2 = _interopRequireDefault(_timelineController);
var _subtitleTrackController = _dereq_(14);
var _subtitleTrackController2 = _interopRequireDefault(_subtitleTrackController);
var _subtitleStreamController = _dereq_(13);
var _subtitleStreamController2 = _interopRequireDefault(_subtitleStreamController);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
//#endif
//#endif
//#if subtitle
//import FetchLoader from './utils/fetch-loader';
//#if altaudio
var hlsDefaultConfig = exports.hlsDefaultConfig = {
autoStartLoad: true, // used by stream-controller
startPosition: -1, // used by stream-controller
defaultAudioCodec: undefined, // used by stream-controller
debug: false, // used by logger
capLevelOnFPSDrop: false, // used by fps-controller
capLevelToPlayerSize: false, // used by cap-level-controller
initialLiveManifestSize: 1, // used by stream-controller
maxBufferLength: 30, // used by stream-controller
maxBufferSize: 60 * 1000 * 1000, // used by stream-controller
maxBufferHole: 0.5, // used by stream-controller
maxSeekHole: 2, // used by stream-controller
lowBufferWatchdogPeriod: 0.5, // used by stream-controller
highBufferWatchdogPeriod: 3, // used by stream-controller
nudgeOffset: 0.1, // used by stream-controller
nudgeMaxRetry: 3, // used by stream-controller
maxFragLookUpTolerance: 0.2, // used by stream-controller
liveSyncDurationCount: 3, // used by stream-controller
liveMaxLatencyDurationCount: Infinity, // used by stream-controller
liveSyncDuration: undefined, // used by stream-controller
liveMaxLatencyDuration: undefined, // used by stream-controller
maxMaxBufferLength: 600, // used by stream-controller
enableWorker: true, // used by demuxer
enableSoftwareAES: true, // used by decrypter
manifestLoadingTimeOut: 10000, // used by playlist-loader
manifestLoadingMaxRetry: 1, // used by playlist-loader
manifestLoadingRetryDelay: 1000, // used by playlist-loader
manifestLoadingMaxRetryTimeout: 64000, // used by playlist-loader
startLevel: undefined, // used by level-controller
levelLoadingTimeOut: 10000, // used by playlist-loader
levelLoadingMaxRetry: 4, // used by playlist-loader
levelLoadingRetryDelay: 1000, // used by playlist-loader
levelLoadingMaxRetryTimeout: 64000, // used by playlist-loader
fragLoadingTimeOut: 20000, // used by fragment-loader
fragLoadingMaxRetry: 6, // used by fragment-loader
fragLoadingRetryDelay: 1000, // used by fragment-loader
fragLoadingMaxRetryTimeout: 64000, // used by fragment-loader
fragLoadingLoopThreshold: 3, // used by stream-controller
startFragPrefetch: false, // used by stream-controller
fpsDroppedMonitoringPeriod: 5000, // used by fps-controller
fpsDroppedMonitoringThreshold: 0.2, // used by fps-controller
appendErrorMaxRetry: 3, // used by buffer-controller
loader: _xhrLoader2.default,
//loader: FetchLoader,
fLoader: undefined,
pLoader: undefined,
xhrSetup: undefined,
fetchSetup: undefined,
abrController: _abrController2.default,
bufferController: _bufferController2.default,
capLevelController: _capLevelController2.default,
fpsController: _fpsController2.default,
//#if altaudio
audioStreamController: _audioStreamController2.default,
audioTrackController: _audioTrackController2.default,
//#endif
//#if subtitle
subtitleStreamController: _subtitleStreamController2.default,
subtitleTrackController: _subtitleTrackController2.default,
timelineController: _timelineController2.default,
cueHandler: _cues2.default,
enableCEA708Captions: true, // used by timeline-controller
enableWebVTT: true, // used by timeline-controller
captionsTextTrack1Label: 'English', // used by timeline-controller
captionsTextTrack1LanguageCode: 'en', // used by timeline-controller
captionsTextTrack2Label: 'Spanish', // used by timeline-controller
captionsTextTrack2LanguageCode: 'es', // used by timeline-controller
//#endif
stretchShortVideoTrack: false, // used by mp4-remuxer
forceKeyFrameOnDiscontinuity: true, // used by ts-demuxer
abrEwmaFastLive: 3, // used by abr-controller
abrEwmaSlowLive: 9, // used by abr-controller
abrEwmaFastVoD: 3, // used by abr-controller
abrEwmaSlowVoD: 9, // used by abr-controller
abrEwmaDefaultEstimate: 5e5, // 500 kbps // used by abr-controller
abrBandWidthFactor: 0.95, // used by abr-controller
abrBandWidthUpFactor: 0.7, // used by abr-controller
abrMaxWithRealBitrate: false, // used by abr-controller
maxStarvationDelay: 4, // used by abr-controller
maxLoadingDelay: 4, // used by abr-controller
minAutoBitrate: 0 // used by hls
};
},{"10":10,"13":13,"14":14,"15":15,"47":47,"5":5,"55":55,"6":6,"7":7,"8":8,"9":9}],5:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _bufferHelper = _dereq_(34);
var _bufferHelper2 = _interopRequireDefault(_bufferHelper);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
var _ewmaBandwidthEstimator = _dereq_(48);
var _ewmaBandwidthEstimator2 = _interopRequireDefault(_ewmaBandwidthEstimator);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* simple ABR Controller
* - compute next level based on last fragment bw heuristics
* - implement an abandon rules triggered if we have less than 2 frag buffered and if computed bw shows that we risk buffer stalling
*/
var AbrController = function (_EventHandler) {
_inherits(AbrController, _EventHandler);
function AbrController(hls) {
_classCallCheck(this, AbrController);
var _this = _possibleConstructorReturn(this, (AbrController.__proto__ || Object.getPrototypeOf(AbrController)).call(this, hls, _events2.default.FRAG_LOADING, _events2.default.FRAG_LOADED, _events2.default.FRAG_BUFFERED, _events2.default.ERROR));
_this.lastLoadedFragLevel = 0;
_this._nextAutoLevel = -1;
_this.hls = hls;
_this.onCheck = _this._abandonRulesCheck.bind(_this);
return _this;
}
_createClass(AbrController, [{
key: 'destroy',
value: function destroy() {
this.clearTimer();
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onFragLoading',
value: function onFragLoading(data) {
var frag = data.frag;
if (frag.type === 'main') {
if (!this.timer) {
this.timer = setInterval(this.onCheck, 100);
}
// lazy init of bw Estimator, rationale is that we use different params for Live/VoD
// so we need to wait for stream manifest / playlist type to instantiate it.
if (!this._bwEstimator) {
var hls = this.hls,
level = data.frag.level,
isLive = hls.levels[level].details.live,
config = hls.config,
ewmaFast = void 0,
ewmaSlow = void 0;
if (isLive) {
ewmaFast = config.abrEwmaFastLive;
ewmaSlow = config.abrEwmaSlowLive;
} else {
ewmaFast = config.abrEwmaFastVoD;
ewmaSlow = config.abrEwmaSlowVoD;
}
this._bwEstimator = new _ewmaBandwidthEstimator2.default(hls, ewmaSlow, ewmaFast, config.abrEwmaDefaultEstimate);
}
this.fragCurrent = frag;
}
}
}, {
key: '_abandonRulesCheck',
value: function _abandonRulesCheck() {
/*
monitor fragment retrieval time...
we compute expected time of arrival of the complete fragment.
we compare it to expected time of buffer starvation
*/
var hls = this.hls,
v = hls.media,
frag = this.fragCurrent,
loader = frag.loader,
minAutoLevel = hls.minAutoLevel;
// if loader has been destroyed or loading has been aborted, stop timer and return
if (!loader || loader.stats && loader.stats.aborted) {
_logger.logger.warn('frag loader destroy or aborted, disarm abandonRules');
this.clearTimer();
return;
}
var stats = loader.stats;
/* only monitor frag retrieval time if
(video not paused OR first fragment being loaded(ready state === HAVE_NOTHING = 0)) AND autoswitching enabled AND not lowest level (=> means that we have several levels) */
if (v && (!v.paused && v.playbackRate !== 0 || !v.readyState) && frag.autoLevel && frag.level) {
var requestDelay = performance.now() - stats.trequest,
playbackRate = Math.abs(v.playbackRate);
// monitor fragment load progress after half of expected fragment duration,to stabilize bitrate
if (requestDelay > 500 * frag.duration / playbackRate) {
var levels = hls.levels,
loadRate = Math.max(1, stats.bw ? stats.bw / 8 : stats.loaded * 1000 / requestDelay),
// byte/s; at least 1 byte/s to avoid division by zero
// compute expected fragment length using frag duration and level bitrate. also ensure that expected len is gte than already loaded size
level = levels[frag.level],
levelBitrate = level.realBitrate ? Math.max(level.realBitrate, level.bitrate) : level.bitrate,
expectedLen = stats.total ? stats.total : Math.max(stats.loaded, Math.round(frag.duration * levelBitrate / 8)),
pos = v.currentTime,
fragLoadedDelay = (expectedLen - stats.loaded) / loadRate,
bufferStarvationDelay = (_bufferHelper2.default.bufferInfo(v, pos, hls.config.maxBufferHole).end - pos) / playbackRate;
// consider emergency switch down only if we have less than 2 frag buffered AND
// time to finish loading current fragment is bigger than buffer starvation delay
// ie if we risk buffer starvation if bw does not increase quickly
if (bufferStarvationDelay < 2 * frag.duration / playbackRate && fragLoadedDelay > bufferStarvationDelay) {
var fragLevelNextLoadedDelay = void 0,
nextLoadLevel = void 0;
// lets iterate through lower level and try to find the biggest one that could avoid rebuffering
// we start from current level - 1 and we step down , until we find a matching level
for (nextLoadLevel = frag.level - 1; nextLoadLevel > minAutoLevel; nextLoadLevel--) {
// compute time to load next fragment at lower level
// 0.8 : consider only 80% of current bw to be conservative
// 8 = bits per byte (bps/Bps)
var levelNextBitrate = levels[nextLoadLevel].realBitrate ? Math.max(levels[nextLoadLevel].realBitrate, levels[nextLoadLevel].bitrate) : levels[nextLoadLevel].bitrate;
fragLevelNextLoadedDelay = frag.duration * levelNextBitrate / (8 * 0.8 * loadRate);
if (fragLevelNextLoadedDelay < bufferStarvationDelay) {
// we found a lower level that be rebuffering free with current estimated bw !
break;
}
}
// only emergency switch down if it takes less time to load new fragment at lowest level instead
// of finishing loading current one ...
if (fragLevelNextLoadedDelay < fragLoadedDelay) {
_logger.logger.warn('loading too slow, abort fragment loading and switch to level ' + nextLoadLevel + ':fragLoadedDelay[' + nextLoadLevel + ']<fragLoadedDelay[' + (frag.level - 1) + '];bufferStarvationDelay:' + fragLevelNextLoadedDelay.toFixed(1) + '<' + fragLoadedDelay.toFixed(1) + ':' + bufferStarvationDelay.toFixed(1));
// force next load level in auto mode
hls.nextLoadLevel = nextLoadLevel;
// update bw estimate for this fragment before cancelling load (this will help reducing the bw)
this._bwEstimator.sample(requestDelay, stats.loaded);
//abort fragment loading
loader.abort();
// stop abandon rules timer
this.clearTimer();
hls.trigger(_events2.default.FRAG_LOAD_EMERGENCY_ABORTED, { frag: frag, stats: stats });
}
}
}
}
}
}, {
key: 'onFragLoaded',
value: function onFragLoaded(data) {
var frag = data.frag;
if (frag.type === 'main' && !isNaN(frag.sn)) {
// stop monitoring bw once frag loaded
this.clearTimer();
// store level id after successful fragment load
this.lastLoadedFragLevel = frag.level;
// reset forced auto level value so that next level will be selected
this._nextAutoLevel = -1;
// compute level average bitrate
if (this.hls.config.abrMaxWithRealBitrate) {
var level = this.hls.levels[frag.level];
var loadedBytes = (level.loaded ? level.loaded.bytes : 0) + data.stats.loaded;
var loadedDuration = (level.loaded ? level.loaded.duration : 0) + data.frag.duration;
level.loaded = { bytes: loadedBytes, duration: loadedDuration };
level.realBitrate = Math.round(8 * loadedBytes / loadedDuration);
}
// if fragment has been loaded to perform a bitrate test,
if (data.frag.bitrateTest) {
var stats = data.stats;
stats.tparsed = stats.tbuffered = stats.tload;
this.onFragBuffered(data);
}
}
}
}, {
key: 'onFragBuffered',
value: function onFragBuffered(data) {
var stats = data.stats,
frag = data.frag;
// only update stats on first frag buffering
// if same frag is loaded multiple times, it might be in browser cache, and loaded quickly
// and leading to wrong bw estimation
// on bitrate test, also only update stats once (if tload = tbuffered == on FRAG_LOADED)
if (stats.aborted !== true && frag.loadCounter === 1 && frag.type === 'main' && !isNaN(frag.sn) && (!frag.bitrateTest || stats.tload === stats.tbuffered)) {
// use tparsed-trequest instead of tbuffered-trequest to compute fragLoadingProcessing; rationale is that buffer appending only happens once media is attached
// in case we use config.startFragPrefetch while media is not attached yet, fragment might be parsed while media not attached yet, but it will only be buffered on media attached
// as a consequence it could happen really late in the process. meaning that appending duration might appears huge ... leading to underestimated throughput estimation
var fragLoadingProcessingMs = stats.tparsed - stats.trequest;
_logger.logger.log('latency/loading/parsing/append/kbps:' + Math.round(stats.tfirst - stats.trequest) + '/' + Math.round(stats.tload - stats.tfirst) + '/' + Math.round(stats.tparsed - stats.tload) + '/' + Math.round(stats.tbuffered - stats.tparsed) + '/' + Math.round(8 * stats.loaded / (stats.tbuffered - stats.trequest)));
this._bwEstimator.sample(fragLoadingProcessingMs, stats.loaded);
// if fragment has been loaded to perform a bitrate test, (hls.startLevel = -1), store bitrate test delay duration
if (frag.bitrateTest) {
this.bitrateTestDelay = fragLoadingProcessingMs / 1000;
} else {
this.bitrateTestDelay = 0;
}
}
}
}, {
key: 'onError',
value: function onError(data) {
// stop timer in case of frag loading error
switch (data.details) {
case _errors.ErrorDetails.FRAG_LOAD_ERROR:
case _errors.ErrorDetails.FRAG_LOAD_TIMEOUT:
this.clearTimer();
break;
default:
break;
}
}
}, {
key: 'clearTimer',
value: function clearTimer() {
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
}
// return next auto level
}, {
key: '_findBestLevel',
value: function _findBestLevel(currentLevel, currentFragDuration, currentBw, minAutoLevel, maxAutoLevel, maxFetchDuration, bwFactor, bwUpFactor, levels) {
for (var i = maxAutoLevel; i >= minAutoLevel; i--) {
var levelInfo = levels[i],
levelDetails = levelInfo.details,
avgDuration = levelDetails ? levelDetails.totalduration / levelDetails.fragments.length : currentFragDuration,
live = levelDetails ? levelDetails.live : false,
adjustedbw = void 0;
// follow algorithm captured from stagefright :
// https://android.googlesource.com/platform/frameworks/av/+/master/media/libstagefright/httplive/LiveSession.cpp
// Pick the highest bandwidth stream below or equal to estimated bandwidth.
// consider only 80% of the available bandwidth, but if we are switching up,
// be even more conservative (70%) to avoid overestimating and immediately
// switching back.
if (i <= currentLevel) {
adjustedbw = bwFactor * currentBw;
} else {
adjustedbw = bwUpFactor * currentBw;
}
var bitrate = levels[i].realBitrate ? Math.max(levels[i].realBitrate, levels[i].bitrate) : levels[i].bitrate,
fetchDuration = bitrate * avgDuration / adjustedbw;
_logger.logger.trace('level/adjustedbw/bitrate/avgDuration/maxFetchDuration/fetchDuration: ' + i + '/' + Math.round(adjustedbw) + '/' + bitrate + '/' + avgDuration + '/' + maxFetchDuration + '/' + fetchDuration);
// if adjusted bw is greater than level bitrate AND
if (adjustedbw > bitrate && (
// fragment fetchDuration unknown OR live stream OR fragment fetchDuration less than max allowed fetch duration, then this level matches
// we don't account for max Fetch Duration for live streams, this is to avoid switching down when near the edge of live sliding window ...
!fetchDuration || live || fetchDuration < maxFetchDuration)) {
// as we are looping from highest to lowest, this will return the best achievable quality level
return i;
}
}
// not enough time budget even with quality level 0 ... rebuffering might happen
return -1;
}
}, {
key: 'nextAutoLevel',
get: function get() {
var forcedAutoLevel = this._nextAutoLevel;
var bwEstimator = this._bwEstimator;
// in case next auto level has been forced, and bw not available or not reliable, return forced value
if (forcedAutoLevel !== -1 && (!bwEstimator || !bwEstimator.canEstimate())) {
return forcedAutoLevel;
}
// compute next level using ABR logic
var nextABRAutoLevel = this._nextABRAutoLevel;
// if forced auto level has been defined, use it to cap ABR computed quality level
if (forcedAutoLevel !== -1) {
nextABRAutoLevel = Math.min(forcedAutoLevel, nextABRAutoLevel);
}
return nextABRAutoLevel;
},
set: function set(nextLevel) {
this._nextAutoLevel = nextLevel;
}
}, {
key: '_nextABRAutoLevel',
get: function get() {
var hls = this.hls,
maxAutoLevel = hls.maxAutoLevel,
levels = hls.levels,
config = hls.config,
minAutoLevel = hls.minAutoLevel;
var v = hls.media,
currentLevel = this.lastLoadedFragLevel,
currentFragDuration = this.fragCurrent ? this.fragCurrent.duration : 0,
pos = v ? v.currentTime : 0,
// playbackRate is the absolute value of the playback rate; if v.playbackRate is 0, we use 1 to load as
// if we're playing back at the normal rate.
playbackRate = v && v.playbackRate !== 0 ? Math.abs(v.playbackRate) : 1.0,
avgbw = this._bwEstimator ? this._bwEstimator.getEstimate() : config.abrEwmaDefaultEstimate,
// bufferStarvationDelay is the wall-clock time left until the playback buffer is exhausted.
bufferStarvationDelay = (_bufferHelper2.default.bufferInfo(v, pos, config.maxBufferHole).end - pos) / playbackRate;
// First, look to see if we can find a level matching with our avg bandwidth AND that could also guarantee no rebuffering at all
var bestLevel = this._findBestLevel(currentLevel, currentFragDuration, avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay, config.abrBandWidthFactor, config.abrBandWidthUpFactor, levels);
if (bestLevel >= 0) {
return bestLevel;
} else {
_logger.logger.trace('rebuffering expected to happen, lets try to find a quality level minimizing the rebuffering');
// not possible to get rid of rebuffering ... let's try to find level that will guarantee less than maxStarvationDelay of rebuffering
// if no matching level found, logic will return 0
var maxStarvationDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxStarvationDelay) : config.maxStarvationDelay,
bwFactor = config.abrBandWidthFactor,
bwUpFactor = config.abrBandWidthUpFactor;
if (bufferStarvationDelay === 0) {
// in case buffer is empty, let's check if previous fragment was loaded to perform a bitrate test
var bitrateTestDelay = this.bitrateTestDelay;
if (bitrateTestDelay) {
// if it is the case, then we need to adjust our max starvation delay using maxLoadingDelay config value
// max video loading delay used in automatic start level selection :
// in that mode ABR controller will ensure that video loading time (ie the time to fetch the first fragment at lowest quality level +
// the time to fetch the fragment at the appropriate quality level is less than ```maxLoadingDelay``` )
// cap maxLoadingDelay and ensure it is not bigger 'than bitrate test' frag duration
var maxLoadingDelay = currentFragDuration ? Math.min(currentFragDuration, config.maxLoadingDelay) : config.maxLoadingDelay;
maxStarvationDelay = maxLoadingDelay - bitrateTestDelay;
_logger.logger.trace('bitrate test took ' + Math.round(1000 * bitrateTestDelay) + 'ms, set first fragment max fetchDuration to ' + Math.round(1000 * maxStarvationDelay) + ' ms');
// don't use conservative factor on bitrate test
bwFactor = bwUpFactor = 1;
}
}
bestLevel = this._findBestLevel(currentLevel, currentFragDuration, avgbw, minAutoLevel, maxAutoLevel, bufferStarvationDelay + maxStarvationDelay, bwFactor, bwUpFactor, levels);
return Math.max(bestLevel, 0);
}
}
}]);
return AbrController;
}(_eventHandler2.default);
exports.default = AbrController;
},{"30":30,"31":31,"32":32,"34":34,"48":48,"50":50}],6:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _binarySearch = _dereq_(45);
var _binarySearch2 = _interopRequireDefault(_binarySearch);
var _bufferHelper = _dereq_(34);
var _bufferHelper2 = _interopRequireDefault(_bufferHelper);
var _demuxer = _dereq_(24);
var _demuxer2 = _interopRequireDefault(_demuxer);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _levelHelper = _dereq_(35);
var _levelHelper2 = _interopRequireDefault(_levelHelper);
var _timeRanges = _dereq_(51);
var _timeRanges2 = _interopRequireDefault(_timeRanges);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Audio Stream Controller
*/
var State = {
STOPPED: 'STOPPED',
STARTING: 'STARTING',
IDLE: 'IDLE',
PAUSED: 'PAUSED',
KEY_LOADING: 'KEY_LOADING',
FRAG_LOADING: 'FRAG_LOADING',
FRAG_LOADING_WAITING_RETRY: 'FRAG_LOADING_WAITING_RETRY',
WAITING_TRACK: 'WAITING_TRACK',
PARSING: 'PARSING',
PARSED: 'PARSED',
BUFFER_FLUSHING: 'BUFFER_FLUSHING',
ENDED: 'ENDED',
ERROR: 'ERROR',
WAITING_INIT_PTS: 'WAITING_INIT_PTS'
};
var AudioStreamController = function (_EventHandler) {
_inherits(AudioStreamController, _EventHandler);
function AudioStreamController(hls) {
_classCallCheck(this, AudioStreamController);
var _this = _possibleConstructorReturn(this, (AudioStreamController.__proto__ || Object.getPrototypeOf(AudioStreamController)).call(this, hls, _events2.default.MEDIA_ATTACHED, _events2.default.MEDIA_DETACHING, _events2.default.AUDIO_TRACKS_UPDATED, _events2.default.AUDIO_TRACK_SWITCHING, _events2.default.AUDIO_TRACK_LOADED, _events2.default.KEY_LOADED, _events2.default.FRAG_LOADED, _events2.default.FRAG_PARSING_INIT_SEGMENT, _events2.default.FRAG_PARSING_DATA, _events2.default.FRAG_PARSED, _events2.default.ERROR, _events2.default.BUFFER_CREATED, _events2.default.BUFFER_APPENDED, _events2.default.BUFFER_FLUSHED, _events2.default.INIT_PTS_FOUND));
_this.config = hls.config;
_this.audioCodecSwap = false;
_this.ticks = 0;
_this._state = State.STOPPED;
_this.ontick = _this.tick.bind(_this);
_this.initPTS = [];
_this.waitingFragment = null;
return _this;
}
_createClass(AudioStreamController, [{
key: 'destroy',
value: function destroy() {
this.stopLoad();
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
_eventHandler2.default.prototype.destroy.call(this);
this.state = State.STOPPED;
}
//Signal that video PTS was found
}, {
key: 'onInitPtsFound',
value: function onInitPtsFound(data) {
var demuxerId = data.id,
cc = data.frag.cc,
initPTS = data.initPTS;
if (demuxerId === 'main') {
//Always update the new INIT PTS
//Can change due level switch
this.initPTS[cc] = initPTS;
_logger.logger.log('InitPTS for cc:' + cc + ' found from video track:' + initPTS);
//If we are waiting we need to demux/remux the waiting frag
//With the new initPTS
if (this.state === State.WAITING_INIT_PTS) {
_logger.logger.log('sending pending audio frag to demuxer');
this.state = State.FRAG_LOADING;
//We have audio frag waiting or video pts
//Let process it
this.onFragLoaded(this.waitingFragment);
//Lets clean the waiting frag
this.waitingFragment = null;
}
}
}
}, {
key: 'startLoad',
value: function startLoad(startPosition) {
if (this.tracks) {
var lastCurrentTime = this.lastCurrentTime;
this.stopLoad();
if (!this.timer) {
this.timer = setInterval(this.ontick, 100);
}
this.fragLoadError = 0;
if (lastCurrentTime > 0 && startPosition === -1) {
_logger.logger.log('audio:override startPosition with lastCurrentTime @' + lastCurrentTime.toFixed(3));
this.state = State.IDLE;
} else {
this.lastCurrentTime = this.startPosition ? this.startPosition : startPosition;
this.state = State.STARTING;
}
this.nextLoadPosition = this.startPosition = this.lastCurrentTime;
this.tick();
} else {
this.startPosition = startPosition;
this.state = State.STOPPED;
}
}
}, {
key: 'stopLoad',
value: function stopLoad() {
var frag = this.fragCurrent;
if (frag) {
if (frag.loader) {
frag.loader.abort();
}
this.fragCurrent = null;
}
this.fragPrevious = null;
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
this.state = State.STOPPED;
}
}, {
key: 'tick',
value: function tick() {
this.ticks++;
if (this.ticks === 1) {
this.doTick();
if (this.ticks > 1) {
setTimeout(this.tick, 1);
}
this.ticks = 0;
}
}
}, {
key: 'doTick',
value: function doTick() {
var pos,
track,
trackDetails,
hls = this.hls,
config = hls.config;
//logger.log('audioStream:' + this.state);
switch (this.state) {
case State.ERROR:
//don't do anything in error state to avoid breaking further ...
case State.PAUSED:
//don't do anything in paused state either ...
case State.BUFFER_FLUSHING:
break;
case State.STARTING:
this.state = State.WAITING_TRACK;
this.loadedmetadata = false;
break;
case State.IDLE:
var tracks = this.tracks;
// audio tracks not received => exit loop
if (!tracks) {
break;
}
// if video not attached AND
// start fragment already requested OR start frag prefetch disable
// exit loop
// => if media not attached but start frag prefetch is enabled and start frag not requested yet, we will not exit loop
if (!this.media && (this.startFragRequested || !config.startFragPrefetch)) {
break;
}
// determine next candidate fragment to be loaded, based on current position and
// end of buffer position
// if we have not yet loaded any fragment, start loading from start position
if (this.loadedmetadata) {
pos = this.media.currentTime;
} else {
pos = this.nextLoadPosition;
}
var media = this.mediaBuffer ? this.mediaBuffer : this.media,
bufferInfo = _bufferHelper2.default.bufferInfo(media, pos, config.maxBufferHole),
bufferLen = bufferInfo.len,
bufferEnd = bufferInfo.end,
fragPrevious = this.fragPrevious,
maxBufLen = config.maxMaxBufferLength,
audioSwitch = this.audioSwitch,
trackId = this.trackId;
// if buffer length is less than maxBufLen try to load a new fragment
if ((bufferLen < maxBufLen || audioSwitch) && trackId < tracks.length) {
trackDetails = tracks[trackId].details;
// if track info not retrieved yet, switch state and wait for track retrieval
if (typeof trackDetails === 'undefined') {
this.state = State.WAITING_TRACK;
break;
}
// we just got done loading the final fragment, check if we need to finalize media stream
if (!audioSwitch && !trackDetails.live && fragPrevious && fragPrevious.sn === trackDetails.endSN) {
// if we are not seeking or if we are seeking but everything (almost) til the end is buffered, let's signal eos
// we don't compare exactly media.duration === bufferInfo.end as there could be some subtle media duration difference when switching
// between different renditions. using half frag duration should help cope with these cases.
if (!this.media.seeking || this.media.duration - bufferEnd < fragPrevious.duration / 2) {
// Finalize the media stream
this.hls.trigger(_events2.default.BUFFER_EOS, { type: 'audio' });
this.state = State.ENDED;
break;
}
}
// find fragment index, contiguous with end of buffer position
var fragments = trackDetails.fragments,
fragLen = fragments.length,
start = fragments[0].start,
end = fragments[fragLen - 1].start + fragments[fragLen - 1].duration,
frag = void 0;
// When switching audio track, reload audio as close as possible to currentTime
if (audioSwitch) {
if (trackDetails.live && !trackDetails.PTSKnown) {
_logger.logger.log('switching audiotrack, live stream, unknown PTS,load first fragment');
bufferEnd = 0;
} else {
bufferEnd = pos;
// if currentTime (pos) is less than alt audio playlist start time, it means that alt audio is ahead of currentTime
if (trackDetails.PTSKnown && pos < start) {
// if everything is buffered from pos to start or if audio buffer upfront, let's seek to start
if (bufferInfo.end > start || bufferInfo.nextStart) {
_logger.logger.log('alt audio track ahead of main track, seek to start of alt audio track');
this.media.currentTime = start + 0.05;
} else {
return;
}
}
}
}
if (trackDetails.initSegment && !trackDetails.initSegment.data) {
frag = trackDetails.initSegment;
}
// if bufferEnd before start of playlist, load first fragment
else if (bufferEnd <= start) {
frag = fragments[0];
if (trackDetails.live && frag.loadIdx && frag.loadIdx === this.fragLoadIdx) {
// we just loaded this first fragment, and we are still lagging behind the start of the live playlist
// let's force seek to start
var nextBuffered = bufferInfo.nextStart ? bufferInfo.nextStart : start;
_logger.logger.log('no alt audio available @currentTime:' + this.media.currentTime + ', seeking @' + (nextBuffered + 0.05));
this.media.currentTime = nextBuffered + 0.05;
return;
}
} else {
var foundFrag = void 0;
var maxFragLookUpTolerance = config.maxFragLookUpTolerance;
var fragNext = fragPrevious ? fragments[fragPrevious.sn - fragments[0].sn + 1] : undefined;
var fragmentWithinToleranceTest = function fragmentWithinToleranceTest(candidate) {
// offset should be within fragment boundary - config.maxFragLookUpTolerance
// this is to cope with situations like
// bufferEnd = 9.991
// frag[Ø] : [0,10]
// frag[1] : [10,20]
// bufferEnd is within frag[0] range ... although what we are expecting is to return frag[1] here
// frag start frag start+duration
// |-----------------------------|
// <---> <--->
// ...--------><-----------------------------><---------....
// previous frag matching fragment next frag
// return -1 return 0 return 1
//logger.log(`level/sn/start/end/bufEnd:${level}/${candidate.sn}/${candidate.start}/${(candidate.start+candidate.duration)}/${bufferEnd}`);
// Set the lookup tolerance to be small enough to detect the current segment - ensures we don't skip over very small segments
var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration);
if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
return 1;
} // if maxFragLookUpTolerance will have negative value then don't return -1 for first element
else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
return -1;
}
return 0;
};
if (bufferEnd < end) {
if (bufferEnd > end - maxFragLookUpTolerance) {
maxFragLookUpTolerance = 0;
}
// Prefer the next fragment if it's within tolerance
if (fragNext && !fragmentWithinToleranceTest(fragNext)) {
foundFrag = fragNext;
} else {
foundFrag = _binarySearch2.default.search(fragments, fragmentWithinToleranceTest);
}
} else {
// reach end of playlist
foundFrag = fragments[fragLen - 1];
}
if (foundFrag) {
frag = foundFrag;
start = foundFrag.start;
//logger.log('find SN matching with pos:' + bufferEnd + ':' + frag.sn);
if (fragPrevious && frag.level === fragPrevious.level && frag.sn === fragPrevious.sn) {
if (frag.sn < trackDetails.endSN) {
frag = fragments[frag.sn + 1 - trackDetails.startSN];
_logger.logger.log('SN just loaded, load next one: ' + frag.sn);
} else {
frag = null;
}
}
}
}
if (frag) {
//logger.log(' loading frag ' + i +',pos/bufEnd:' + pos.toFixed(3) + '/' + bufferEnd.toFixed(3));
if (frag.decryptdata && frag.decryptdata.uri != null && frag.decryptdata.key == null) {
_logger.logger.log('Loading key for ' + frag.sn + ' of [' + trackDetails.startSN + ' ,' + trackDetails.endSN + '],track ' + trackId);
this.state = State.KEY_LOADING;
hls.trigger(_events2.default.KEY_LOADING, { frag: frag });
} else {
_logger.logger.log('Loading ' + frag.sn + ' of [' + trackDetails.startSN + ' ,' + trackDetails.endSN + '],track ' + trackId + ', currentTime:' + pos + ',bufferEnd:' + bufferEnd.toFixed(3));
// ensure that we are not reloading the same fragments in loop ...
if (this.fragLoadIdx !== undefined) {
this.fragLoadIdx++;
} else {
this.fragLoadIdx = 0;
}
if (frag.loadCounter) {
frag.loadCounter++;
var maxThreshold = config.fragLoadingLoopThreshold;
// if this frag has already been loaded 3 times, and if it has been reloaded recently
if (frag.loadCounter > maxThreshold && Math.abs(this.fragLoadIdx - frag.loadIdx) < maxThreshold) {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_LOOP_LOADING_ERROR, fatal: false, frag: frag });
return;
}
} else {
frag.loadCounter = 1;
}
frag.loadIdx = this.fragLoadIdx;
this.fragCurrent = frag;
this.startFragRequested = true;
if (!isNaN(frag.sn)) {
this.nextLoadPosition = frag.start + frag.duration;
}
hls.trigger(_events2.default.FRAG_LOADING, { frag: frag });
this.state = State.FRAG_LOADING;
}
}
}
break;
case State.WAITING_TRACK:
track = this.tracks[this.trackId];
// check if playlist is already loaded
if (track && track.details) {
this.state = State.IDLE;
}
break;
case State.FRAG_LOADING_WAITING_RETRY:
var now = performance.now();
var retryDate = this.retryDate;
media = this.media;
var isSeeking = media && media.seeking;
// if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
if (!retryDate || now >= retryDate || isSeeking) {
_logger.logger.log('audioStreamController: retryDate reached, switch back to IDLE state');
this.state = State.IDLE;
}
break;
case State.WAITING_INIT_PTS:
case State.STOPPED:
case State.FRAG_LOADING:
case State.PARSING:
case State.PARSED:
case State.ENDED:
break;
default:
break;
}
}
}, {
key: 'onMediaAttached',
value: function onMediaAttached(data) {
var media = this.media = this.mediaBuffer = data.media;
this.onvseeking = this.onMediaSeeking.bind(this);
this.onvended = this.onMediaEnded.bind(this);
media.addEventListener('seeking', this.onvseeking);
media.addEventListener('ended', this.onvended);
var config = this.config;
if (this.tracks && config.autoStartLoad) {
this.startLoad(config.startPosition);
}
}
}, {
key: 'onMediaDetaching',
value: function onMediaDetaching() {
var media = this.media;
if (media && media.ended) {
_logger.logger.log('MSE detaching and video ended, reset startPosition');
this.startPosition = this.lastCurrentTime = 0;
}
// reset fragment loading counter on MSE detaching to avoid reporting FRAG_LOOP_LOADING_ERROR after error recovery
var tracks = this.tracks;
if (tracks) {
// reset fragment load counter
tracks.forEach(function (track) {
if (track.details) {
track.details.fragments.forEach(function (fragment) {
fragment.loadCounter = undefined;
});
}
});
}
// remove video listeners
if (media) {
media.removeEventListener('seeking', this.onvseeking);
media.removeEventListener('ended', this.onvended);
this.onvseeking = this.onvseeked = this.onvended = null;
}
this.media = this.mediaBuffer = null;
this.loadedmetadata = false;
this.stopLoad();
}
}, {
key: 'onMediaSeeking',
value: function onMediaSeeking() {
if (this.state === State.ENDED) {
// switch to IDLE state to check for potential new fragment
this.state = State.IDLE;
}
if (this.media) {
this.lastCurrentTime = this.media.currentTime;
}
// avoid reporting fragment loop loading error in case user is seeking several times on same position
if (this.fragLoadIdx !== undefined) {
this.fragLoadIdx += 2 * this.config.fragLoadingLoopThreshold;
}
// tick to speed up processing
this.tick();
}
}, {
key: 'onMediaEnded',
value: function onMediaEnded() {
// reset startPosition and lastCurrentTime to restart playback @ stream beginning
this.startPosition = this.lastCurrentTime = 0;
}
}, {
key: 'onAudioTracksUpdated',
value: function onAudioTracksUpdated(data) {
_logger.logger.log('audio tracks updated');
this.tracks = data.audioTracks;
}
}, {
key: 'onAudioTrackSwitching',
value: function onAudioTrackSwitching(data) {
// if any URL found on new audio track, it is an alternate audio track
var altAudio = !!data.url;
this.trackId = data.id;
this.state = State.IDLE;
this.fragCurrent = null;
this.state = State.PAUSED;
this.waitingFragment = null;
// destroy useless demuxer when switching audio to main
if (!altAudio) {
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
} else {
// switching to audio track, start timer if not already started
if (!this.timer) {
this.timer = setInterval(this.ontick, 100);
}
}
//should we switch tracks ?
if (altAudio) {
this.audioSwitch = true;
//main audio track are handled by stream-controller, just do something if switching to alt audio track
this.state = State.IDLE;
// increase fragment load Index to avoid frag loop loading error after buffer flush
if (this.fragLoadIdx !== undefined) {
this.fragLoadIdx += 2 * this.config.fragLoadingLoopThreshold;
}
}
this.tick();
}
}, {
key: 'onAudioTrackLoaded',
value: function onAudioTrackLoaded(data) {
var newDetails = data.details,
trackId = data.id,
track = this.tracks[trackId],
duration = newDetails.totalduration,
sliding = 0;
_logger.logger.log('track ' + trackId + ' loaded [' + newDetails.startSN + ',' + newDetails.endSN + '],duration:' + duration);
if (newDetails.live) {
var curDetails = track.details;
if (curDetails && newDetails.fragments.length > 0) {
// we already have details for that level, merge them
_levelHelper2.default.mergeDetails(curDetails, newDetails);
sliding = newDetails.fragments[0].start;
// TODO
//this.liveSyncPosition = this.computeLivePosition(sliding, curDetails);
if (newDetails.PTSKnown) {
_logger.logger.log('live audio playlist sliding:' + sliding.toFixed(3));
} else {
_logger.logger.log('live audio playlist - outdated PTS, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
_logger.logger.log('live audio playlist - first load, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
}
track.details = newDetails;
// compute start position
if (!this.startFragRequested) {
// compute start position if set to -1. use it straight away if value is defined
if (this.startPosition === -1) {
// first, check if start time offset has been set in playlist, if yes, use this value
var startTimeOffset = newDetails.startTimeOffset;
if (!isNaN(startTimeOffset)) {
_logger.logger.log('start time offset found in playlist, adjust startPosition to ' + startTimeOffset);
this.startPosition = startTimeOffset;
} else {
this.startPosition = 0;
}
}
this.nextLoadPosition = this.startPosition;
}
// only switch batck to IDLE state if we were waiting for track to start downloading a new fragment
if (this.state === State.WAITING_TRACK) {
this.state = State.IDLE;
}
//trigger handler right now
this.tick();
}
}, {
key: 'onKeyLoaded',
value: function onKeyLoaded() {
if (this.state === State.KEY_LOADING) {
this.state = State.IDLE;
this.tick();
}
}
}, {
key: 'onFragLoaded',
value: function onFragLoaded(data) {
var fragCurrent = this.fragCurrent,
fragLoaded = data.frag;
if (this.state === State.FRAG_LOADING && fragCurrent && fragLoaded.type === 'audio' && fragLoaded.level === fragCurrent.level && fragLoaded.sn === fragCurrent.sn) {
var track = this.tracks[this.trackId],
details = track.details,
duration = details.totalduration,
trackId = fragCurrent.level,
sn = fragCurrent.sn,
cc = fragCurrent.cc,
audioCodec = this.config.defaultAudioCodec || track.audioCodec || 'mp4a.40.2',
stats = this.stats = data.stats;
if (sn === 'initSegment') {
this.state = State.IDLE;
stats.tparsed = stats.tbuffered = performance.now();
details.initSegment.data = data.payload;
this.hls.trigger(_events2.default.FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'audio' });
this.tick();
} else {
this.state = State.PARSING;
// transmux the MPEG-TS data to ISO-BMFF segments
this.appended = false;
if (!this.demuxer) {
this.demuxer = new _demuxer2.default(this.hls, 'audio');
}
//Check if we have video initPTS
// If not we need to wait for it
var initPTS = this.initPTS[cc];
var initSegmentData = details.initSegment ? details.initSegment.data : [];
if (initSegmentData || initPTS !== undefined) {
this.pendingBuffering = true;
_logger.logger.log('Demuxing ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],track ' + trackId);
// time Offset is accurate if level PTS is known, or if playlist is not sliding (not live)
var accurateTimeOffset = false; //details.PTSKnown || !details.live;
this.demuxer.push(data.payload, initSegmentData, audioCodec, null, fragCurrent, duration, accurateTimeOffset, initPTS);
} else {
_logger.logger.log('unknown video PTS for continuity counter ' + cc + ', waiting for video PTS before demuxing audio frag ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],track ' + trackId);
this.waitingFragment = data;
this.state = State.WAITING_INIT_PTS;
}
}
}
this.fragLoadError = 0;
}
}, {
key: 'onFragParsingInitSegment',
value: function onFragParsingInitSegment(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
var tracks = data.tracks,
track = void 0;
// delete any video track found on audio demuxer
if (tracks.video) {
delete tracks.video;
}
// include levelCodec in audio and video tracks
track = tracks.audio;
if (track) {
track.levelCodec = 'mp4a.40.2';
track.id = data.id;
this.hls.trigger(_events2.default.BUFFER_CODECS, tracks);
_logger.logger.log('audio track:audio,container:' + track.container + ',codecs[level/parsed]=[' + track.levelCodec + '/' + track.codec + ']');
var initSegment = track.initSegment;
if (initSegment) {
var appendObj = { type: 'audio', data: initSegment, parent: 'audio', content: 'initSegment' };
if (this.audioSwitch) {
this.pendingData = [appendObj];
} else {
this.appended = true;
// arm pending Buffering flag before appending a segment
this.pendingBuffering = true;
this.hls.trigger(_events2.default.BUFFER_APPENDING, appendObj);
}
}
//trigger handler right now
this.tick();
}
}
}
}, {
key: 'onFragParsingData',
value: function onFragParsingData(data) {
var _this2 = this;
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && data.type === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
var trackId = this.trackId,
track = this.tracks[trackId],
hls = this.hls;
if (isNaN(data.endPTS)) {
data.endPTS = data.startPTS + fragCurrent.duration;
data.endDTS = data.startDTS + fragCurrent.duration;
}
_logger.logger.log('parsed ' + data.type + ',PTS:[' + data.startPTS.toFixed(3) + ',' + data.endPTS.toFixed(3) + '],DTS:[' + data.startDTS.toFixed(3) + '/' + data.endDTS.toFixed(3) + '],nb:' + data.nb);
_levelHelper2.default.updateFragPTSDTS(track.details, fragCurrent.sn, data.startPTS, data.endPTS);
var audioSwitch = this.audioSwitch,
media = this.media,
appendOnBufferFlush = false;
//Only flush audio from old audio tracks when PTS is known on new audio track
if (audioSwitch && media) {
if (media.readyState) {
var currentTime = media.currentTime;
_logger.logger.log('switching audio track : currentTime:' + currentTime);
if (currentTime >= data.startPTS) {
_logger.logger.log('switching audio track : flushing all audio');
this.state = State.BUFFER_FLUSHING;
hls.trigger(_events2.default.BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
appendOnBufferFlush = true;
//Lets announce that the initial audio track switch flush occur
this.audioSwitch = false;
hls.trigger(_events2.default.AUDIO_TRACK_SWITCHED, { id: trackId });
}
} else {
//Lets announce that the initial audio track switch flush occur
this.audioSwitch = false;
hls.trigger(_events2.default.AUDIO_TRACK_SWITCHED, { id: trackId });
}
}
var pendingData = this.pendingData;
if (!this.audioSwitch) {
[data.data1, data.data2].forEach(function (buffer) {
if (buffer && buffer.length) {
pendingData.push({ type: data.type, data: buffer, parent: 'audio', content: 'data' });
}
});
if (!appendOnBufferFlush && pendingData.length) {
pendingData.forEach(function (appendObj) {
// only append in PARSING state (rationale is that an appending error could happen synchronously on first segment appending)
// in that case it is useless to append following segments
if (_this2.state === State.PARSING) {
// arm pending Buffering flag before appending a segment
_this2.pendingBuffering = true;
_this2.hls.trigger(_events2.default.BUFFER_APPENDING, appendObj);
}
});
this.pendingData = [];
this.appended = true;
}
}
//trigger handler right now
this.tick();
}
}
}, {
key: 'onFragParsed',
value: function onFragParsed(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'audio' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
this.stats.tparsed = performance.now();
this.state = State.PARSED;
this._checkAppendedParsed();
}
}
}, {
key: 'onBufferCreated',
value: function onBufferCreated(data) {
var audioTrack = data.tracks.audio;
if (audioTrack) {
this.mediaBuffer = audioTrack.buffer;
this.loadedmetadata = true;
}
}
}, {
key: 'onBufferAppended',
value: function onBufferAppended(data) {
if (data.parent === 'audio') {
var state = this.state;
if (state === State.PARSING || state === State.PARSED) {
// check if all buffers have been appended
this.pendingBuffering = data.pending > 0;
this._checkAppendedParsed();
}
}
}
}, {
key: '_checkAppendedParsed',
value: function _checkAppendedParsed() {
//trigger handler right now
if (this.state === State.PARSED && (!this.appended || !this.pendingBuffering)) {
var frag = this.fragCurrent,
stats = this.stats,
hls = this.hls;
if (frag) {
this.fragPrevious = frag;
stats.tbuffered = performance.now();
hls.trigger(_events2.default.FRAG_BUFFERED, { stats: stats, frag: frag, id: 'audio' });
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
_logger.logger.log('audio buffered : ' + _timeRanges2.default.toString(media.buffered));
if (this.audioSwitch && this.appended) {
this.audioSwitch = false;
hls.trigger(_events2.default.AUDIO_TRACK_SWITCHED, { id: this.trackId });
}
this.state = State.IDLE;
}
this.tick();
}
}
}, {
key: 'onError',
value: function onError(data) {
var frag = data.frag;
// don't handle frag error not related to audio fragment
if (frag && frag.type !== 'audio') {
return;
}
switch (data.details) {
case _errors.ErrorDetails.FRAG_LOAD_ERROR:
case _errors.ErrorDetails.FRAG_LOAD_TIMEOUT:
if (!data.fatal) {
var loadError = this.fragLoadError;
if (loadError) {
loadError++;
} else {
loadError = 1;
}
var config = this.config;
if (loadError <= config.fragLoadingMaxRetry) {
this.fragLoadError = loadError;
// reset load counter to avoid frag loop loading error
frag.loadCounter = 0;
// exponential backoff capped to config.fragLoadingMaxRetryTimeout
var delay = Math.min(Math.pow(2, loadError - 1) * config.fragLoadingRetryDelay, config.fragLoadingMaxRetryTimeout);
_logger.logger.warn('audioStreamController: frag loading failed, retry in ' + delay + ' ms');
this.retryDate = performance.now() + delay;
// retry loading state
this.state = State.FRAG_LOADING_WAITING_RETRY;
} else {
_logger.logger.error('audioStreamController: ' + data.details + ' reaches max retry, redispatch as fatal ...');
// switch error to fatal
data.fatal = true;
this.state = State.ERROR;
}
}
break;
case _errors.ErrorDetails.FRAG_LOOP_LOADING_ERROR:
case _errors.ErrorDetails.AUDIO_TRACK_LOAD_ERROR:
case _errors.ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT:
case _errors.ErrorDetails.KEY_LOAD_ERROR:
case _errors.ErrorDetails.KEY_LOAD_TIMEOUT:
// when in ERROR state, don't switch back to IDLE state in case a non-fatal error is received
if (this.state !== State.ERROR) {
// if fatal error, stop processing, otherwise move to IDLE to retry loading
this.state = data.fatal ? State.ERROR : State.IDLE;
_logger.logger.warn('audioStreamController: ' + data.details + ' while loading frag,switch to ' + this.state + ' state ...');
}
break;
case _errors.ErrorDetails.BUFFER_FULL_ERROR:
// if in appending state
if (data.parent === 'audio' && (this.state === State.PARSING || this.state === State.PARSED)) {
var media = this.mediaBuffer,
currentTime = this.media.currentTime,
mediaBuffered = media && _bufferHelper2.default.isBuffered(media, currentTime) && _bufferHelper2.default.isBuffered(media, currentTime + 0.5);
// reduce max buf len if current position is buffered
if (mediaBuffered) {
var _config = this.config;
if (_config.maxMaxBufferLength >= _config.maxBufferLength) {
// reduce max buffer length as it might be too high. we do this to avoid loop flushing ...
_config.maxMaxBufferLength /= 2;
_logger.logger.warn('audio:reduce max buffer length to ' + _config.maxMaxBufferLength + 's');
// increase fragment load Index to avoid frag loop loading error after buffer flush
this.fragLoadIdx += 2 * _config.fragLoadingLoopThreshold;
}
this.state = State.IDLE;
} else {
// current position is not buffered, but browser is still complaining about buffer full error
// this happens on IE/Edge, refer to https://github.com/video-dev/hls.js/pull/708
// in that case flush the whole audio buffer to recover
_logger.logger.warn('buffer full error also media.currentTime is not buffered, flush audio buffer');
this.fragCurrent = null;
// flush everything
this.state = State.BUFFER_FLUSHING;
this.hls.trigger(_events2.default.BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
}
}
break;
default:
break;
}
}
}, {
key: 'onBufferFlushed',
value: function onBufferFlushed() {
var _this3 = this;
var pendingData = this.pendingData;
if (pendingData && pendingData.length) {
_logger.logger.log('appending pending audio data on Buffer Flushed');
pendingData.forEach(function (appendObj) {
_this3.hls.trigger(_events2.default.BUFFER_APPENDING, appendObj);
});
this.appended = true;
this.pendingData = [];
this.state = State.PARSED;
} else {
// move to IDLE once flush complete. this should trigger new fragment loading
this.state = State.IDLE;
// reset reference to frag
this.fragPrevious = null;
this.tick();
}
}
}, {
key: 'state',
set: function set(nextState) {
if (this.state !== nextState) {
var previousState = this.state;
this._state = nextState;
_logger.logger.log('audio stream:' + previousState + '->' + nextState);
}
},
get: function get() {
return this._state;
}
}]);
return AudioStreamController;
}(_eventHandler2.default);
exports.default = AudioStreamController;
},{"24":24,"30":30,"31":31,"32":32,"34":34,"35":35,"45":45,"50":50,"51":51}],7:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* audio track controller
*/
var AudioTrackController = function (_EventHandler) {
_inherits(AudioTrackController, _EventHandler);
function AudioTrackController(hls) {
_classCallCheck(this, AudioTrackController);
var _this = _possibleConstructorReturn(this, (AudioTrackController.__proto__ || Object.getPrototypeOf(AudioTrackController)).call(this, hls, _events2.default.MANIFEST_LOADING, _events2.default.MANIFEST_LOADED, _events2.default.AUDIO_TRACK_LOADED));
_this.ticks = 0;
_this.ontick = _this.tick.bind(_this);
return _this;
}
_createClass(AudioTrackController, [{
key: 'destroy',
value: function destroy() {
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'tick',
value: function tick() {
this.ticks++;
if (this.ticks === 1) {
this.doTick();
if (this.ticks > 1) {
setTimeout(this.tick, 1);
}
this.ticks = 0;
}
}
}, {
key: 'doTick',
value: function doTick() {
this.updateTrack(this.trackId);
}
}, {
key: 'onManifestLoading',
value: function onManifestLoading() {
// reset audio tracks on manifest loading
this.tracks = [];
this.trackId = -1;
}
}, {
key: 'onManifestLoaded',
value: function onManifestLoaded(data) {
var _this2 = this;
var tracks = data.audioTracks || [];
var defaultFound = false;
this.tracks = tracks;
this.hls.trigger(_events2.default.AUDIO_TRACKS_UPDATED, { audioTracks: tracks });
// loop through available audio tracks and autoselect default if needed
var id = 0;
tracks.forEach(function (track) {
if (track.default) {
_this2.audioTrack = id;
defaultFound = true;
return;
}
id++;
});
if (defaultFound === false && tracks.length) {
_logger.logger.log('no default audio track defined, use first audio track as default');
this.audioTrack = 0;
}
}
}, {
key: 'onAudioTrackLoaded',
value: function onAudioTrackLoaded(data) {
if (data.id < this.tracks.length) {
_logger.logger.log('audioTrack ' + data.id + ' loaded');
this.tracks[data.id].details = data.details;
// check if current playlist is a live playlist
if (data.details.live && !this.timer) {
// if live playlist we will have to reload it periodically
// set reload period to playlist target duration
this.timer = setInterval(this.ontick, 1000 * data.details.targetduration);
}
if (!data.details.live && this.timer) {
// playlist is not live and timer is armed : stopping it
clearInterval(this.timer);
this.timer = null;
}
}
}
/** get alternate audio tracks list from playlist **/
}, {
key: 'setAudioTrackInternal',
value: function setAudioTrackInternal(newId) {
// check if level idx is valid
if (newId >= 0 && newId < this.tracks.length) {
// stopping live reloading timer if any
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
this.trackId = newId;
_logger.logger.log('switching to audioTrack ' + newId);
var audioTrack = this.tracks[newId],
hls = this.hls,
type = audioTrack.type,
url = audioTrack.url,
eventObj = { id: newId, type: type, url: url };
// keep AUDIO_TRACK_SWITCH for legacy reason
hls.trigger(_events2.default.AUDIO_TRACK_SWITCH, eventObj);
hls.trigger(_events2.default.AUDIO_TRACK_SWITCHING, eventObj);
// check if we need to load playlist for this audio Track
var details = audioTrack.details;
if (url && (details === undefined || details.live === true)) {
// track not retrieved yet, or live playlist we need to (re)load it
_logger.logger.log('(re)loading playlist for audioTrack ' + newId);
hls.trigger(_events2.default.AUDIO_TRACK_LOADING, { url: url, id: newId });
}
}
}
}, {
key: 'updateTrack',
value: function updateTrack(newId) {
// check if level idx is valid
if (newId >= 0 && newId < this.tracks.length) {
// stopping live reloading timer if any
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
this.trackId = newId;
_logger.logger.log('updating audioTrack ' + newId);
var audioTrack = this.tracks[newId],
url = audioTrack.url;
// check if we need to load playlist for this audio Track
var details = audioTrack.details;
if (url && (details === undefined || details.live === true)) {
// track not retrieved yet, or live playlist we need to (re)load it
_logger.logger.log('(re)loading playlist for audioTrack ' + newId);
this.hls.trigger(_events2.default.AUDIO_TRACK_LOADING, { url: url, id: newId });
}
}
}
}, {
key: 'audioTracks',
get: function get() {
return this.tracks;
}
/** get index of the selected audio track (index in audio track lists) **/
}, {
key: 'audioTrack',
get: function get() {
return this.trackId;
}
/** select an audio track, based on its index in audio track lists**/
,
set: function set(audioTrackId) {
if (this.trackId !== audioTrackId || this.tracks[audioTrackId].details === undefined) {
this.setAudioTrackInternal(audioTrackId);
}
}
}]);
return AudioTrackController;
}(_eventHandler2.default);
exports.default = AudioTrackController;
},{"31":31,"32":32,"50":50}],8:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
var _errors = _dereq_(30);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Buffer Controller
*/
var BufferController = function (_EventHandler) {
_inherits(BufferController, _EventHandler);
function BufferController(hls) {
_classCallCheck(this, BufferController);
// the value that we have set mediasource.duration to
// (the actual duration may be tweaked slighly by the browser)
var _this = _possibleConstructorReturn(this, (BufferController.__proto__ || Object.getPrototypeOf(BufferController)).call(this, hls, _events2.default.MEDIA_ATTACHING, _events2.default.MEDIA_DETACHING, _events2.default.MANIFEST_PARSED, _events2.default.BUFFER_RESET, _events2.default.BUFFER_APPENDING, _events2.default.BUFFER_CODECS, _events2.default.BUFFER_EOS, _events2.default.BUFFER_FLUSHING, _events2.default.LEVEL_PTS_UPDATED, _events2.default.LEVEL_UPDATED));
_this._msDuration = null;
// the value that we want to set mediaSource.duration to
_this._levelDuration = null;
// Source Buffer listeners
_this.onsbue = _this.onSBUpdateEnd.bind(_this);
_this.onsbe = _this.onSBUpdateError.bind(_this);
_this.pendingTracks = {};
_this.tracks = {};
return _this;
}
_createClass(BufferController, [{
key: 'destroy',
value: function destroy() {
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onLevelPtsUpdated',
value: function onLevelPtsUpdated(data) {
var type = data.type;
var audioTrack = this.tracks.audio;
// Adjusting `SourceBuffer.timestampOffset` (desired point in the timeline where the next frames should be appended)
// in Chrome browser when we detect MPEG audio container and time delta between level PTS and `SourceBuffer.timestampOffset`
// is greater than 100ms (this is enough to handle seek for VOD or level change for LIVE videos). At the time of change we issue
// `SourceBuffer.abort()` and adjusting `SourceBuffer.timestampOffset` if `SourceBuffer.updating` is false or awaiting `updateend`
// event if SB is in updating state.
// More info here: https://github.com/video-dev/hls.js/issues/332#issuecomment-257986486
if (type === 'audio' && audioTrack && audioTrack.container === 'audio/mpeg') {
// Chrome audio mp3 track
var audioBuffer = this.sourceBuffer.audio;
var delta = Math.abs(audioBuffer.timestampOffset - data.start);
// adjust timestamp offset if time delta is greater than 100ms
if (delta > 0.1) {
var updating = audioBuffer.updating;
try {
audioBuffer.abort();
} catch (err) {
updating = true;
_logger.logger.warn('can not abort audio buffer: ' + err);
}
if (!updating) {
_logger.logger.warn('change mpeg audio timestamp offset from ' + audioBuffer.timestampOffset + ' to ' + data.start);
audioBuffer.timestampOffset = data.start;
} else {
this.audioTimestampOffset = data.start;
}
}
}
}
}, {
key: 'onManifestParsed',
value: function onManifestParsed(data) {
var audioExpected = data.audio,
videoExpected = data.video,
sourceBufferNb = 0;
// in case of alt audio 2 BUFFER_CODECS events will be triggered, one per stream controller
// sourcebuffers will be created all at once when the expected nb of tracks will be reached
// in case alt audio is not used, only one BUFFER_CODEC event will be fired from main stream controller
// it will contain the expected nb of source buffers, no need to compute it
if (data.altAudio && (audioExpected || videoExpected)) {
sourceBufferNb = (audioExpected ? 1 : 0) + (videoExpected ? 1 : 0);
_logger.logger.log(sourceBufferNb + ' sourceBuffer(s) expected');
}
this.sourceBufferNb = sourceBufferNb;
}
}, {
key: 'onMediaAttaching',
value: function onMediaAttaching(data) {
var media = this.media = data.media;
if (media) {
// setup the media source
var ms = this.mediaSource = new MediaSource();
//Media Source listeners
this.onmso = this.onMediaSourceOpen.bind(this);
this.onmse = this.onMediaSourceEnded.bind(this);
this.onmsc = this.onMediaSourceClose.bind(this);
ms.addEventListener('sourceopen', this.onmso);
ms.addEventListener('sourceended', this.onmse);
ms.addEventListener('sourceclose', this.onmsc);
// link video and media Source
media.src = URL.createObjectURL(ms);
}
}
}, {
key: 'onMediaDetaching',
value: function onMediaDetaching() {
_logger.logger.log('media source detaching');
var ms = this.mediaSource;
if (ms) {
if (ms.readyState === 'open') {
try {
// endOfStream could trigger exception if any sourcebuffer is in updating state
// we don't really care about checking sourcebuffer state here,
// as we are anyway detaching the MediaSource
// let's just avoid this exception to propagate
ms.endOfStream();
} catch (err) {
_logger.logger.warn('onMediaDetaching:' + err.message + ' while calling endOfStream');
}
}
ms.removeEventListener('sourceopen', this.onmso);
ms.removeEventListener('sourceended', this.onmse);
ms.removeEventListener('sourceclose', this.onmsc);
// Detach properly the MediaSource from the HTMLMediaElement as
// suggested in https://github.com/w3c/media-source/issues/53.
if (this.media) {
URL.revokeObjectURL(this.media.src);
this.media.removeAttribute('src');
this.media.load();
}
this.mediaSource = null;
this.media = null;
this.pendingTracks = {};
this.tracks = {};
this.sourceBuffer = {};
this.flushRange = [];
this.segments = [];
this.appended = 0;
}
this.onmso = this.onmse = this.onmsc = null;
this.hls.trigger(_events2.default.MEDIA_DETACHED);
}
}, {
key: 'onMediaSourceOpen',
value: function onMediaSourceOpen() {
_logger.logger.log('media source opened');
this.hls.trigger(_events2.default.MEDIA_ATTACHED, { media: this.media });
var mediaSource = this.mediaSource;
if (mediaSource) {
// once received, don't listen anymore to sourceopen event
mediaSource.removeEventListener('sourceopen', this.onmso);
}
this.checkPendingTracks();
}
}, {
key: 'checkPendingTracks',
value: function checkPendingTracks() {
// if any buffer codecs pending, check if we have enough to create sourceBuffers
var pendingTracks = this.pendingTracks,
pendingTracksNb = Object.keys(pendingTracks).length;
// if any pending tracks and (if nb of pending tracks gt or equal than expected nb or if unknown expected nb)
if (pendingTracksNb && (this.sourceBufferNb <= pendingTracksNb || this.sourceBufferNb === 0)) {
// ok, let's create them now !
this.createSourceBuffers(pendingTracks);
this.pendingTracks = {};
// append any pending segments now !
this.doAppending();
}
}
}, {
key: 'onMediaSourceClose',
value: function onMediaSourceClose() {
_logger.logger.log('media source closed');
}
}, {
key: 'onMediaSourceEnded',
value: function onMediaSourceEnded() {
_logger.logger.log('media source ended');
}
}, {
key: 'onSBUpdateEnd',
value: function onSBUpdateEnd() {
// update timestampOffset
if (this.audioTimestampOffset) {
var audioBuffer = this.sourceBuffer.audio;
_logger.logger.warn('change mpeg audio timestamp offset from ' + audioBuffer.timestampOffset + ' to ' + this.audioTimestampOffset);
audioBuffer.timestampOffset = this.audioTimestampOffset;
delete this.audioTimestampOffset;
}
if (this._needsFlush) {
this.doFlush();
}
if (this._needsEos) {
this.checkEos();
}
this.appending = false;
var parent = this.parent;
// count nb of pending segments waiting for appending on this sourcebuffer
var pending = this.segments.reduce(function (counter, segment) {
return segment.parent === parent ? counter + 1 : counter;
}, 0);
this.hls.trigger(_events2.default.BUFFER_APPENDED, { parent: parent, pending: pending });
// don't append in flushing mode
if (!this._needsFlush) {
this.doAppending();
}
this.updateMediaElementDuration();
}
}, {
key: 'onSBUpdateError',
value: function onSBUpdateError(event) {
_logger.logger.error('sourceBuffer error:', event);
// according to http://www.w3.org/TR/media-source/#sourcebuffer-append-error
// this error might not always be fatal (it is fatal if decode error is set, in that case
// it will be followed by a mediaElement error ...)
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_APPENDING_ERROR, fatal: false });
// we don't need to do more than that, as accordin to the spec, updateend will be fired just after
}
}, {
key: 'onBufferReset',
value: function onBufferReset() {
var sourceBuffer = this.sourceBuffer;
for (var type in sourceBuffer) {
var sb = sourceBuffer[type];
try {
this.mediaSource.removeSourceBuffer(sb);
sb.removeEventListener('updateend', this.onsbue);
sb.removeEventListener('error', this.onsbe);
} catch (err) {}
}
this.sourceBuffer = {};
this.flushRange = [];
this.segments = [];
this.appended = 0;
}
}, {
key: 'onBufferCodecs',
value: function onBufferCodecs(tracks) {
// if source buffer(s) not created yet, appended buffer tracks in this.pendingTracks
// if sourcebuffers already created, do nothing ...
if (Object.keys(this.sourceBuffer).length === 0) {
for (var trackName in tracks) {
this.pendingTracks[trackName] = tracks[trackName];
}
var mediaSource = this.mediaSource;
if (mediaSource && mediaSource.readyState === 'open') {
// try to create sourcebuffers if mediasource opened
this.checkPendingTracks();
}
}
}
}, {
key: 'createSourceBuffers',
value: function createSourceBuffers(tracks) {
var sourceBuffer = this.sourceBuffer,
mediaSource = this.mediaSource;
for (var trackName in tracks) {
if (!sourceBuffer[trackName]) {
var track = tracks[trackName];
// use levelCodec as first priority
var codec = track.levelCodec || track.codec;
var mimeType = track.container + ';codecs=' + codec;
_logger.logger.log('creating sourceBuffer(' + mimeType + ')');
try {
var sb = sourceBuffer[trackName] = mediaSource.addSourceBuffer(mimeType);
sb.addEventListener('updateend', this.onsbue);
sb.addEventListener('error', this.onsbe);
this.tracks[trackName] = { codec: codec, container: track.container };
track.buffer = sb;
} catch (err) {
_logger.logger.error('error while trying to add sourceBuffer:' + err.message);
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_ADD_CODEC_ERROR, fatal: false, err: err, mimeType: mimeType });
}
}
}
this.hls.trigger(_events2.default.BUFFER_CREATED, { tracks: tracks });
}
}, {
key: 'onBufferAppending',
value: function onBufferAppending(data) {
if (!this._needsFlush) {
if (!this.segments) {
this.segments = [data];
} else {
this.segments.push(data);
}
this.doAppending();
}
}
}, {
key: 'onBufferAppendFail',
value: function onBufferAppendFail(data) {
_logger.logger.error('sourceBuffer error:', data.event);
// according to http://www.w3.org/TR/media-source/#sourcebuffer-append-error
// this error might not always be fatal (it is fatal if decode error is set, in that case
// it will be followed by a mediaElement error ...)
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_APPENDING_ERROR, fatal: false });
}
// on BUFFER_EOS mark matching sourcebuffer(s) as ended and trigger checkEos()
}, {
key: 'onBufferEos',
value: function onBufferEos(data) {
var sb = this.sourceBuffer;
var dataType = data.type;
for (var type in sb) {
if (!dataType || type === dataType) {
if (!sb[type].ended) {
sb[type].ended = true;
_logger.logger.log(type + ' sourceBuffer now EOS');
}
}
}
this.checkEos();
}
// if all source buffers are marked as ended, signal endOfStream() to MediaSource.
}, {
key: 'checkEos',
value: function checkEos() {
var sb = this.sourceBuffer,
mediaSource = this.mediaSource;
if (!mediaSource || mediaSource.readyState !== 'open') {
this._needsEos = false;
return;
}
for (var type in sb) {
var sbobj = sb[type];
if (!sbobj.ended) {
return;
}
if (sbobj.updating) {
this._needsEos = true;
return;
}
}
_logger.logger.log('all media data available, signal endOfStream() to MediaSource and stop loading fragment');
//Notify the media element that it now has all of the media data
try {
mediaSource.endOfStream();
} catch (e) {
_logger.logger.warn('exception while calling mediaSource.endOfStream()');
}
this._needsEos = false;
}
}, {
key: 'onBufferFlushing',
value: function onBufferFlushing(data) {
this.flushRange.push({ start: data.startOffset, end: data.endOffset, type: data.type });
// attempt flush immediatly
this.flushBufferCounter = 0;
this.doFlush();
}
}, {
key: 'onLevelUpdated',
value: function onLevelUpdated(event) {
var details = event.details;
if (details.fragments.length === 0) {
return;
}
this._levelDuration = details.totalduration + details.fragments[0].start;
this.updateMediaElementDuration();
}
// https://github.com/video-dev/hls.js/issues/355
}, {
key: 'updateMediaElementDuration',
value: function updateMediaElementDuration() {
var media = this.media,
mediaSource = this.mediaSource,
sourceBuffer = this.sourceBuffer,
levelDuration = this._levelDuration;
if (levelDuration === null || !media || !mediaSource || !sourceBuffer || media.readyState === 0 || mediaSource.readyState !== 'open') {
return;
}
for (var type in sourceBuffer) {
if (sourceBuffer[type].updating) {
// can't set duration whilst a buffer is updating
return;
}
}
if (this._msDuration === null) {
// initialise to the value that the media source is reporting
this._msDuration = mediaSource.duration;
}
var duration = media.duration;
// levelDuration was the last value we set.
// not using mediaSource.duration as the browser may tweak this value
// only update mediasource duration if its value increase, this is to avoid
// flushing already buffered portion when switching between quality level
if (levelDuration > this._msDuration && levelDuration > duration || duration === Infinity || isNaN(duration)) {
_logger.logger.log('Updating mediasource duration to ' + levelDuration.toFixed(3));
this._msDuration = mediaSource.duration = levelDuration;
}
}
}, {
key: 'doFlush',
value: function doFlush() {
// loop through all buffer ranges to flush
while (this.flushRange.length) {
var range = this.flushRange[0];
// flushBuffer will abort any buffer append in progress and flush Audio/Video Buffer
if (this.flushBuffer(range.start, range.end, range.type)) {
// range flushed, remove from flush array
this.flushRange.shift();
this.flushBufferCounter = 0;
} else {
this._needsFlush = true;
// avoid looping, wait for SB update end to retrigger a flush
return;
}
}
if (this.flushRange.length === 0) {
// everything flushed
this._needsFlush = false;
// let's recompute this.appended, which is used to avoid flush looping
var appended = 0;
var sourceBuffer = this.sourceBuffer;
try {
for (var type in sourceBuffer) {
appended += sourceBuffer[type].buffered.length;
}
} catch (error) {
// error could be thrown while accessing buffered, in case sourcebuffer has already been removed from MediaSource
// this is harmess at this stage, catch this to avoid reporting an internal exception
_logger.logger.error('error while accessing sourceBuffer.buffered');
}
this.appended = appended;
this.hls.trigger(_events2.default.BUFFER_FLUSHED);
}
}
}, {
key: 'doAppending',
value: function doAppending() {
var hls = this.hls,
sourceBuffer = this.sourceBuffer,
segments = this.segments;
if (Object.keys(sourceBuffer).length) {
if (this.media.error) {
this.segments = [];
_logger.logger.error('trying to append although a media error occured, flush segment and abort');
return;
}
if (this.appending) {
//logger.log(`sb appending in progress`);
return;
}
if (segments && segments.length) {
var segment = segments.shift();
try {
var type = segment.type,
sb = sourceBuffer[type];
if (sb) {
if (!sb.updating) {
// reset sourceBuffer ended flag before appending segment
sb.ended = false;
//logger.log(`appending ${segment.content} ${type} SB, size:${segment.data.length}, ${segment.parent}`);
this.parent = segment.parent;
sb.appendBuffer(segment.data);
this.appendError = 0;
this.appended++;
this.appending = true;
} else {
segments.unshift(segment);
}
} else {
// in case we don't have any source buffer matching with this segment type,
// it means that Mediasource fails to create sourcebuffer
// discard this segment, and trigger update end
this.onSBUpdateEnd();
}
} catch (err) {
// in case any error occured while appending, put back segment in segments table
_logger.logger.error('error while trying to append buffer:' + err.message);
segments.unshift(segment);
var event = { type: _errors.ErrorTypes.MEDIA_ERROR, parent: segment.parent };
if (err.code !== 22) {
if (this.appendError) {
this.appendError++;
} else {
this.appendError = 1;
}
event.details = _errors.ErrorDetails.BUFFER_APPEND_ERROR;
/* with UHD content, we could get loop of quota exceeded error until
browser is able to evict some data from sourcebuffer. retrying help recovering this
*/
if (this.appendError > hls.config.appendErrorMaxRetry) {
_logger.logger.log('fail ' + hls.config.appendErrorMaxRetry + ' times to append segment in sourceBuffer');
segments = [];
event.fatal = true;
hls.trigger(_events2.default.ERROR, event);
return;
} else {
event.fatal = false;
hls.trigger(_events2.default.ERROR, event);
}
} else {
// QuotaExceededError: http://www.w3.org/TR/html5/infrastructure.html#quotaexceedederror
// let's stop appending any segments, and report BUFFER_FULL_ERROR error
this.segments = [];
event.details = _errors.ErrorDetails.BUFFER_FULL_ERROR;
event.fatal = false;
hls.trigger(_events2.default.ERROR, event);
return;
}
}
}
}
}
/*
flush specified buffered range,
return true once range has been flushed.
as sourceBuffer.remove() is asynchronous, flushBuffer will be retriggered on sourceBuffer update end
*/
}, {
key: 'flushBuffer',
value: function flushBuffer(startOffset, endOffset, typeIn) {
var sb,
i,
bufStart,
bufEnd,
flushStart,
flushEnd,
sourceBuffer = this.sourceBuffer;
if (Object.keys(sourceBuffer).length) {
_logger.logger.log('flushBuffer,pos/start/end: ' + this.media.currentTime.toFixed(3) + '/' + startOffset + '/' + endOffset);
// safeguard to avoid infinite looping : don't try to flush more than the nb of appended segments
if (this.flushBufferCounter < this.appended) {
for (var type in sourceBuffer) {
// check if sourcebuffer type is defined (typeIn): if yes, let's only flush this one
// if no, let's flush all sourcebuffers
if (typeIn && type !== typeIn) {
continue;
}
sb = sourceBuffer[type];
// we are going to flush buffer, mark source buffer as 'not ended'
sb.ended = false;
if (!sb.updating) {
try {
for (i = 0; i < sb.buffered.length; i++) {
bufStart = sb.buffered.start(i);
bufEnd = sb.buffered.end(i);
// workaround firefox not able to properly flush multiple buffered range.
if (navigator.userAgent.toLowerCase().indexOf('firefox') !== -1 && endOffset === Number.POSITIVE_INFINITY) {
flushStart = startOffset;
flushEnd = endOffset;
} else {
flushStart = Math.max(bufStart, startOffset);
flushEnd = Math.min(bufEnd, endOffset);
}
/* sometimes sourcebuffer.remove() does not flush
the exact expected time range.
to avoid rounding issues/infinite loop,
only flush buffer range of length greater than 500ms.
*/
if (Math.min(flushEnd, bufEnd) - flushStart > 0.5) {
this.flushBufferCounter++;
_logger.logger.log('flush ' + type + ' [' + flushStart + ',' + flushEnd + '], of [' + bufStart + ',' + bufEnd + '], pos:' + this.media.currentTime);
sb.remove(flushStart, flushEnd);
return false;
}
}
} catch (e) {
_logger.logger.warn('exception while accessing sourcebuffer, it might have been removed from MediaSource');
}
} else {
//logger.log('abort ' + type + ' append in progress');
// this will abort any appending in progress
//sb.abort();
_logger.logger.warn('cannot flush, sb updating in progress');
return false;
}
}
} else {
_logger.logger.warn('abort flushing too many retries');
}
_logger.logger.log('buffer flushed');
}
// everything flushed !
return true;
}
}]);
return BufferController;
}(_eventHandler2.default);
exports.default = BufferController;
},{"30":30,"31":31,"32":32,"50":50}],9:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* cap stream level to media size dimension controller
*/
var CapLevelController = function (_EventHandler) {
_inherits(CapLevelController, _EventHandler);
function CapLevelController(hls) {
_classCallCheck(this, CapLevelController);
return _possibleConstructorReturn(this, (CapLevelController.__proto__ || Object.getPrototypeOf(CapLevelController)).call(this, hls, _events2.default.FPS_DROP_LEVEL_CAPPING, _events2.default.MEDIA_ATTACHING, _events2.default.MANIFEST_PARSED));
}
_createClass(CapLevelController, [{
key: 'destroy',
value: function destroy() {
if (this.hls.config.capLevelToPlayerSize) {
this.media = this.restrictedLevels = null;
this.autoLevelCapping = Number.POSITIVE_INFINITY;
if (this.timer) {
this.timer = clearInterval(this.timer);
}
}
}
}, {
key: 'onFpsDropLevelCapping',
value: function onFpsDropLevelCapping(data) {
if (!this.restrictedLevels) {
this.restrictedLevels = [];
}
if (!this.isLevelRestricted(data.droppedLevel)) {
this.restrictedLevels.push(data.droppedLevel);
}
}
}, {
key: 'onMediaAttaching',
value: function onMediaAttaching(data) {
this.media = data.media instanceof HTMLVideoElement ? data.media : null;
}
}, {
key: 'onManifestParsed',
value: function onManifestParsed(data) {
var hls = this.hls;
if (hls.config.capLevelToPlayerSize) {
this.autoLevelCapping = Number.POSITIVE_INFINITY;
this.levels = data.levels;
hls.firstLevel = this.getMaxLevel(data.firstLevel);
clearInterval(this.timer);
this.timer = setInterval(this.detectPlayerSize.bind(this), 1000);
this.detectPlayerSize();
}
}
}, {
key: 'detectPlayerSize',
value: function detectPlayerSize() {
if (this.media) {
var levelsLength = this.levels ? this.levels.length : 0;
if (levelsLength) {
var hls = this.hls;
hls.autoLevelCapping = this.getMaxLevel(levelsLength - 1);
if (hls.autoLevelCapping > this.autoLevelCapping) {
// if auto level capping has a higher value for the previous one, flush the buffer using nextLevelSwitch
// usually happen when the user go to the fullscreen mode.
hls.streamController.nextLevelSwitch();
}
this.autoLevelCapping = hls.autoLevelCapping;
}
}
}
/*
* returns level should be the one with the dimensions equal or greater than the media (player) dimensions (so the video will be downscaled)
*/
}, {
key: 'getMaxLevel',
value: function getMaxLevel(capLevelIndex) {
var result = 0,
i = void 0,
level = void 0,
mWidth = this.mediaWidth,
mHeight = this.mediaHeight,
lWidth = 0,
lHeight = 0;
for (i = 0; i <= capLevelIndex; i++) {
level = this.levels[i];
if (this.isLevelRestricted(i)) {
break;
}
result = i;
lWidth = level.width;
lHeight = level.height;
if (mWidth <= lWidth || mHeight <= lHeight) {
break;
}
}
return result;
}
}, {
key: 'isLevelRestricted',
value: function isLevelRestricted(level) {
return this.restrictedLevels && this.restrictedLevels.indexOf(level) !== -1 ? true : false;
}
}, {
key: 'contentScaleFactor',
get: function get() {
var pixelRatio = 1;
try {
pixelRatio = window.devicePixelRatio;
} catch (e) {}
return pixelRatio;
}
}, {
key: 'mediaWidth',
get: function get() {
var width = void 0;
var media = this.media;
if (media) {
width = media.width || media.clientWidth || media.offsetWidth;
width *= this.contentScaleFactor;
}
return width;
}
}, {
key: 'mediaHeight',
get: function get() {
var height = void 0;
var media = this.media;
if (media) {
height = media.height || media.clientHeight || media.offsetHeight;
height *= this.contentScaleFactor;
}
return height;
}
}]);
return CapLevelController;
}(_eventHandler2.default);
exports.default = CapLevelController;
},{"31":31,"32":32}],10:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* FPS Controller
*/
var FPSController = function (_EventHandler) {
_inherits(FPSController, _EventHandler);
function FPSController(hls) {
_classCallCheck(this, FPSController);
return _possibleConstructorReturn(this, (FPSController.__proto__ || Object.getPrototypeOf(FPSController)).call(this, hls, _events2.default.MEDIA_ATTACHING));
}
_createClass(FPSController, [{
key: 'destroy',
value: function destroy() {
if (this.timer) {
clearInterval(this.timer);
}
this.isVideoPlaybackQualityAvailable = false;
}
}, {
key: 'onMediaAttaching',
value: function onMediaAttaching(data) {
var config = this.hls.config;
if (config.capLevelOnFPSDrop) {
var video = this.video = data.media instanceof HTMLVideoElement ? data.media : null;
if (typeof video.getVideoPlaybackQuality === 'function') {
this.isVideoPlaybackQualityAvailable = true;
}
clearInterval(this.timer);
this.timer = setInterval(this.checkFPSInterval.bind(this), config.fpsDroppedMonitoringPeriod);
}
}
}, {
key: 'checkFPS',
value: function checkFPS(video, decodedFrames, droppedFrames) {
var currentTime = performance.now();
if (decodedFrames) {
if (this.lastTime) {
var currentPeriod = currentTime - this.lastTime,
currentDropped = droppedFrames - this.lastDroppedFrames,
currentDecoded = decodedFrames - this.lastDecodedFrames,
droppedFPS = 1000 * currentDropped / currentPeriod,
hls = this.hls;
hls.trigger(_events2.default.FPS_DROP, { currentDropped: currentDropped, currentDecoded: currentDecoded, totalDroppedFrames: droppedFrames });
if (droppedFPS > 0) {
//logger.log('checkFPS : droppedFPS/decodedFPS:' + droppedFPS/(1000 * currentDecoded / currentPeriod));
if (currentDropped > hls.config.fpsDroppedMonitoringThreshold * currentDecoded) {
var currentLevel = hls.currentLevel;
_logger.logger.warn('drop FPS ratio greater than max allowed value for currentLevel: ' + currentLevel);
if (currentLevel > 0 && (hls.autoLevelCapping === -1 || hls.autoLevelCapping >= currentLevel)) {
currentLevel = currentLevel - 1;
hls.trigger(_events2.default.FPS_DROP_LEVEL_CAPPING, { level: currentLevel, droppedLevel: hls.currentLevel });
hls.autoLevelCapping = currentLevel;
hls.streamController.nextLevelSwitch();
}
}
}
}
this.lastTime = currentTime;
this.lastDroppedFrames = droppedFrames;
this.lastDecodedFrames = decodedFrames;
}
}
}, {
key: 'checkFPSInterval',
value: function checkFPSInterval() {
var video = this.video;
if (video) {
if (this.isVideoPlaybackQualityAvailable) {
var videoPlaybackQuality = video.getVideoPlaybackQuality();
this.checkFPS(video, videoPlaybackQuality.totalVideoFrames, videoPlaybackQuality.droppedVideoFrames);
} else {
this.checkFPS(video, video.webkitDecodedFrameCount, video.webkitDroppedFrameCount);
}
}
}
}]);
return FPSController;
}(_eventHandler2.default);
exports.default = FPSController;
},{"31":31,"32":32,"50":50}],11:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
var _errors = _dereq_(30);
var _bufferHelper = _dereq_(34);
var _bufferHelper2 = _interopRequireDefault(_bufferHelper);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Level Controller
*/
var LevelController = function (_EventHandler) {
_inherits(LevelController, _EventHandler);
function LevelController(hls) {
_classCallCheck(this, LevelController);
var _this = _possibleConstructorReturn(this, (LevelController.__proto__ || Object.getPrototypeOf(LevelController)).call(this, hls, _events2.default.MANIFEST_LOADED, _events2.default.LEVEL_LOADED, _events2.default.FRAG_LOADED, _events2.default.ERROR));
_this.ontick = _this.tick.bind(_this);
_this._manualLevel = -1;
return _this;
}
_createClass(LevelController, [{
key: 'destroy',
value: function destroy() {
if (this.timer) {
clearTimeout(this.timer);
this.timer = null;
}
this._manualLevel = -1;
}
}, {
key: 'startLoad',
value: function startLoad() {
this.canload = true;
var levels = this._levels;
// clean up live level details to force reload them, and reset load errors
if (levels) {
levels.forEach(function (level) {
level.loadError = 0;
var levelDetails = level.details;
if (levelDetails && levelDetails.live) {
level.details = undefined;
}
});
}
// speed up live playlist refresh if timer exists
if (this.timer) {
this.tick();
}
}
}, {
key: 'stopLoad',
value: function stopLoad() {
this.canload = false;
}
}, {
key: 'onManifestLoaded',
value: function onManifestLoaded(data) {
var levels0 = [],
levels = [],
bitrateStart,
bitrateSet = {},
videoCodecFound = false,
audioCodecFound = false,
hls = this.hls,
brokenmp4inmp3 = /chrome|firefox/.test(navigator.userAgent.toLowerCase()),
checkSupported = function checkSupported(type, codec) {
return MediaSource.isTypeSupported(type + '/mp4;codecs=' + codec);
};
// regroup redundant level together
data.levels.forEach(function (level) {
if (level.videoCodec) {
videoCodecFound = true;
}
// erase audio codec info if browser does not support mp4a.40.34. demuxer will autodetect codec and fallback to mpeg/audio
if (brokenmp4inmp3 && level.audioCodec && level.audioCodec.indexOf('mp4a.40.34') !== -1) {
level.audioCodec = undefined;
}
if (level.audioCodec || level.attrs && level.attrs.AUDIO) {
audioCodecFound = true;
}
var redundantLevelId = bitrateSet[level.bitrate];
if (redundantLevelId === undefined) {
bitrateSet[level.bitrate] = levels0.length;
level.url = [level.url];
level.urlId = 0;
levels0.push(level);
} else {
levels0[redundantLevelId].url.push(level.url);
}
});
// remove audio-only level if we also have levels with audio+video codecs signalled
if (videoCodecFound && audioCodecFound) {
levels0.forEach(function (level) {
if (level.videoCodec) {
levels.push(level);
}
});
} else {
levels = levels0;
}
// only keep level with supported audio/video codecs
levels = levels.filter(function (level) {
var audioCodec = level.audioCodec,
videoCodec = level.videoCodec;
return (!audioCodec || checkSupported('audio', audioCodec)) && (!videoCodec || checkSupported('video', videoCodec));
});
if (levels.length) {
// start bitrate is the first bitrate of the manifest
bitrateStart = levels[0].bitrate;
// sort level on bitrate
levels.sort(function (a, b) {
return a.bitrate - b.bitrate;
});
this._levels = levels;
// find index of first level in sorted levels
for (var i = 0; i < levels.length; i++) {
if (levels[i].bitrate === bitrateStart) {
this._firstLevel = i;
_logger.logger.log('manifest loaded,' + levels.length + ' level(s) found, first bitrate:' + bitrateStart);
break;
}
}
hls.trigger(_events2.default.MANIFEST_PARSED, { levels: levels, firstLevel: this._firstLevel, stats: data.stats, audio: audioCodecFound, video: videoCodecFound, altAudio: data.audioTracks.length > 0 });
} else {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.MANIFEST_INCOMPATIBLE_CODECS_ERROR, fatal: true, url: hls.url, reason: 'no level with compatible codecs found in manifest' });
}
return;
}
}, {
key: 'setLevelInternal',
value: function setLevelInternal(newLevel) {
var levels = this._levels;
var hls = this.hls;
// check if level idx is valid
if (newLevel >= 0 && newLevel < levels.length) {
// stopping live reloading timer if any
if (this.timer) {
clearTimeout(this.timer);
this.timer = null;
}
if (this._level !== newLevel) {
_logger.logger.log('switching to level ' + newLevel);
this._level = newLevel;
var levelProperties = levels[newLevel];
levelProperties.level = newLevel;
// LEVEL_SWITCH to be deprecated in next major release
hls.trigger(_events2.default.LEVEL_SWITCH, levelProperties);
hls.trigger(_events2.default.LEVEL_SWITCHING, levelProperties);
}
var level = levels[newLevel],
levelDetails = level.details;
// check if we need to load playlist for this level
if (!levelDetails || levelDetails.live === true) {
// level not retrieved yet, or live playlist we need to (re)load it
var urlId = level.urlId;
hls.trigger(_events2.default.LEVEL_LOADING, { url: level.url[urlId], level: newLevel, id: urlId });
}
} else {
// invalid level id given, trigger error
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.OTHER_ERROR, details: _errors.ErrorDetails.LEVEL_SWITCH_ERROR, level: newLevel, fatal: false, reason: 'invalid level idx' });
}
}
}, {
key: 'onError',
value: function onError(data) {
if (data.fatal) {
return;
}
var details = data.details,
hls = this.hls,
levelId = void 0,
level = void 0,
levelError = false;
// try to recover not fatal errors
switch (details) {
case _errors.ErrorDetails.FRAG_LOAD_ERROR:
case _errors.ErrorDetails.FRAG_LOAD_TIMEOUT:
case _errors.ErrorDetails.FRAG_LOOP_LOADING_ERROR:
case _errors.ErrorDetails.KEY_LOAD_ERROR:
case _errors.ErrorDetails.KEY_LOAD_TIMEOUT:
levelId = data.frag.level;
break;
case _errors.ErrorDetails.LEVEL_LOAD_ERROR:
case _errors.ErrorDetails.LEVEL_LOAD_TIMEOUT:
levelId = data.context.level;
levelError = true;
break;
case _errors.ErrorDetails.REMUX_ALLOC_ERROR:
levelId = data.level;
break;
default:
break;
}
/* try to switch to a redundant stream if any available.
* if no redundant stream available, emergency switch down (if in auto mode and current level not 0)
* otherwise, we cannot recover this network error ...
*/
if (levelId !== undefined) {
level = this._levels[levelId];
if (!level.loadError) {
level.loadError = 1;
} else {
level.loadError++;
}
// if any redundant streams available and if we haven't try them all (level.loadError is reseted on successful frag/level load.
// if level.loadError reaches nbRedundantLevel it means that we tried them all, no hope => let's switch down
var nbRedundantLevel = level.url.length;
if (nbRedundantLevel > 1 && level.loadError < nbRedundantLevel) {
level.urlId = (level.urlId + 1) % nbRedundantLevel;
level.details = undefined;
_logger.logger.warn('level controller,' + details + ' for level ' + levelId + ': switching to redundant stream id ' + level.urlId);
} else {
// we could try to recover if in auto mode and current level not lowest level (0)
var recoverable = this._manualLevel === -1 && levelId;
if (recoverable) {
_logger.logger.warn('level controller,' + details + ': switch-down for next fragment');
hls.nextAutoLevel = Math.max(0, levelId - 1);
} else if (level && level.details && level.details.live) {
_logger.logger.warn('level controller,' + details + ' on live stream, discard');
if (levelError) {
// reset this._level so that another call to set level() will retrigger a frag load
this._level = undefined;
}
// other errors are handled by stream controller
} else if (details === _errors.ErrorDetails.LEVEL_LOAD_ERROR || details === _errors.ErrorDetails.LEVEL_LOAD_TIMEOUT) {
var media = hls.media,
// 0.5 : tolerance needed as some browsers stalls playback before reaching buffered end
mediaBuffered = media && _bufferHelper2.default.isBuffered(media, media.currentTime) && _bufferHelper2.default.isBuffered(media, media.currentTime + 0.5);
if (mediaBuffered) {
var retryDelay = hls.config.levelLoadingRetryDelay;
_logger.logger.warn('level controller,' + details + ', but media buffered, retry in ' + retryDelay + 'ms');
this.timer = setTimeout(this.ontick, retryDelay);
} else {
_logger.logger.error('cannot recover ' + details + ' error');
this._level = undefined;
// stopping live reloading timer if any
if (this.timer) {
clearTimeout(this.timer);
this.timer = null;
}
// switch error to fatal
data.fatal = true;
}
}
}
}
}
// reset level load error counter on successful frag loaded
}, {
key: 'onFragLoaded',
value: function onFragLoaded(data) {
var fragLoaded = data.frag;
if (fragLoaded && fragLoaded.type === 'main') {
var level = this._levels[fragLoaded.level];
if (level) {
level.loadError = 0;
}
}
}
}, {
key: 'onLevelLoaded',
value: function onLevelLoaded(data) {
var levelId = data.level;
// only process level loaded events matching with expected level
if (levelId === this._level) {
var curLevel = this._levels[levelId];
// reset level load error counter on successful level loaded
curLevel.loadError = 0;
var newDetails = data.details;
// if current playlist is a live playlist, arm a timer to reload it
if (newDetails.live) {
var reloadInterval = 1000 * (newDetails.averagetargetduration ? newDetails.averagetargetduration : newDetails.targetduration),
curDetails = curLevel.details;
if (curDetails && newDetails.endSN === curDetails.endSN) {
// follow HLS Spec, If the client reloads a Playlist file and finds that it has not
// changed then it MUST wait for a period of one-half the target
// duration before retrying.
reloadInterval /= 2;
_logger.logger.log('same live playlist, reload twice faster');
}
// decrement reloadInterval with level loading delay
reloadInterval -= performance.now() - data.stats.trequest;
// in any case, don't reload more than every second
reloadInterval = Math.max(1000, Math.round(reloadInterval));
_logger.logger.log('live playlist, reload in ' + reloadInterval + ' ms');
this.timer = setTimeout(this.ontick, reloadInterval);
} else {
this.timer = null;
}
}
}
}, {
key: 'tick',
value: function tick() {
var levelId = this._level;
if (levelId !== undefined && this.canload) {
var level = this._levels[levelId];
if (level && level.url) {
var urlId = level.urlId;
this.hls.trigger(_events2.default.LEVEL_LOADING, { url: level.url[urlId], level: levelId, id: urlId });
}
}
}
}, {
key: 'levels',
get: function get() {
return this._levels;
}
}, {
key: 'level',
get: function get() {
return this._level;
},
set: function set(newLevel) {
var levels = this._levels;
if (levels && levels.length > newLevel) {
if (this._level !== newLevel || levels[newLevel].details === undefined) {
this.setLevelInternal(newLevel);
}
}
}
}, {
key: 'manualLevel',
get: function get() {
return this._manualLevel;
},
set: function set(newLevel) {
this._manualLevel = newLevel;
if (this._startLevel === undefined) {
this._startLevel = newLevel;
}
if (newLevel !== -1) {
this.level = newLevel;
}
}
}, {
key: 'firstLevel',
get: function get() {
return this._firstLevel;
},
set: function set(newLevel) {
this._firstLevel = newLevel;
}
}, {
key: 'startLevel',
get: function get() {
// hls.startLevel takes precedence over config.startLevel
// if none of these values are defined, fallback on this._firstLevel (first quality level appearing in variant manifest)
if (this._startLevel === undefined) {
var configStartLevel = this.hls.config.startLevel;
if (configStartLevel !== undefined) {
return configStartLevel;
} else {
return this._firstLevel;
}
} else {
return this._startLevel;
}
},
set: function set(newLevel) {
this._startLevel = newLevel;
}
}, {
key: 'nextLoadLevel',
get: function get() {
if (this._manualLevel !== -1) {
return this._manualLevel;
} else {
return this.hls.nextAutoLevel;
}
},
set: function set(nextLevel) {
this.level = nextLevel;
if (this._manualLevel === -1) {
this.hls.nextAutoLevel = nextLevel;
}
}
}]);
return LevelController;
}(_eventHandler2.default);
exports.default = LevelController;
},{"30":30,"31":31,"32":32,"34":34,"50":50}],12:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _binarySearch = _dereq_(45);
var _binarySearch2 = _interopRequireDefault(_binarySearch);
var _bufferHelper = _dereq_(34);
var _bufferHelper2 = _interopRequireDefault(_bufferHelper);
var _demuxer = _dereq_(24);
var _demuxer2 = _interopRequireDefault(_demuxer);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _levelHelper = _dereq_(35);
var _levelHelper2 = _interopRequireDefault(_levelHelper);
var _timeRanges = _dereq_(51);
var _timeRanges2 = _interopRequireDefault(_timeRanges);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Stream Controller
*/
var State = {
STOPPED: 'STOPPED',
IDLE: 'IDLE',
KEY_LOADING: 'KEY_LOADING',
FRAG_LOADING: 'FRAG_LOADING',
FRAG_LOADING_WAITING_RETRY: 'FRAG_LOADING_WAITING_RETRY',
WAITING_LEVEL: 'WAITING_LEVEL',
PARSING: 'PARSING',
PARSED: 'PARSED',
BUFFER_FLUSHING: 'BUFFER_FLUSHING',
ENDED: 'ENDED',
ERROR: 'ERROR'
};
var StreamController = function (_EventHandler) {
_inherits(StreamController, _EventHandler);
function StreamController(hls) {
_classCallCheck(this, StreamController);
var _this = _possibleConstructorReturn(this, (StreamController.__proto__ || Object.getPrototypeOf(StreamController)).call(this, hls, _events2.default.MEDIA_ATTACHED, _events2.default.MEDIA_DETACHING, _events2.default.MANIFEST_LOADING, _events2.default.MANIFEST_PARSED, _events2.default.LEVEL_LOADED, _events2.default.KEY_LOADED, _events2.default.FRAG_LOADED, _events2.default.FRAG_LOAD_EMERGENCY_ABORTED, _events2.default.FRAG_PARSING_INIT_SEGMENT, _events2.default.FRAG_PARSING_DATA, _events2.default.FRAG_PARSED, _events2.default.ERROR, _events2.default.AUDIO_TRACK_SWITCHING, _events2.default.AUDIO_TRACK_SWITCHED, _events2.default.BUFFER_CREATED, _events2.default.BUFFER_APPENDED, _events2.default.BUFFER_FLUSHED));
_this.config = hls.config;
_this.audioCodecSwap = false;
_this.ticks = 0;
_this._state = State.STOPPED;
_this.ontick = _this.tick.bind(_this);
return _this;
}
_createClass(StreamController, [{
key: 'destroy',
value: function destroy() {
this.stopLoad();
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
_eventHandler2.default.prototype.destroy.call(this);
this.state = State.STOPPED;
}
}, {
key: 'startLoad',
value: function startLoad(startPosition) {
if (this.levels) {
var lastCurrentTime = this.lastCurrentTime,
hls = this.hls;
this.stopLoad();
if (!this.timer) {
this.timer = setInterval(this.ontick, 100);
}
this.level = -1;
this.fragLoadError = 0;
if (!this.startFragRequested) {
// determine load level
var startLevel = hls.startLevel;
if (startLevel === -1) {
// -1 : guess start Level by doing a bitrate test by loading first fragment of lowest quality level
startLevel = 0;
this.bitrateTest = true;
}
// set new level to playlist loader : this will trigger start level load
// hls.nextLoadLevel remains until it is set to a new value or until a new frag is successfully loaded
this.level = hls.nextLoadLevel = startLevel;
this.loadedmetadata = false;
}
// if startPosition undefined but lastCurrentTime set, set startPosition to last currentTime
if (lastCurrentTime > 0 && startPosition === -1) {
_logger.logger.log('override startPosition with lastCurrentTime @' + lastCurrentTime.toFixed(3));
startPosition = lastCurrentTime;
}
this.state = State.IDLE;
this.nextLoadPosition = this.startPosition = this.lastCurrentTime = startPosition;
this.tick();
} else {
this.forceStartLoad = true;
this.state = State.STOPPED;
}
}
}, {
key: 'stopLoad',
value: function stopLoad() {
var frag = this.fragCurrent;
if (frag) {
if (frag.loader) {
frag.loader.abort();
}
this.fragCurrent = null;
}
this.fragPrevious = null;
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
this.state = State.STOPPED;
this.forceStartLoad = false;
}
}, {
key: 'tick',
value: function tick() {
this.ticks++;
if (this.ticks === 1) {
this.doTick();
if (this.ticks > 1) {
setTimeout(this.tick, 1);
}
this.ticks = 0;
}
}
}, {
key: 'doTick',
value: function doTick() {
switch (this.state) {
case State.ERROR:
//don't do anything in error state to avoid breaking further ...
break;
case State.BUFFER_FLUSHING:
// in buffer flushing state, reset fragLoadError counter
this.fragLoadError = 0;
break;
case State.IDLE:
// when this returns false there was an error and we shall return immediatly
// from current tick
if (!this._doTickIdle()) {
return;
}
break;
case State.WAITING_LEVEL:
var level = this.levels[this.level];
// check if playlist is already loaded
if (level && level.details) {
this.state = State.IDLE;
}
break;
case State.FRAG_LOADING_WAITING_RETRY:
var now = performance.now();
var retryDate = this.retryDate;
// if current time is gt than retryDate, or if media seeking let's switch to IDLE state to retry loading
if (!retryDate || now >= retryDate || this.media && this.media.seeking) {
_logger.logger.log('mediaController: retryDate reached, switch back to IDLE state');
this.state = State.IDLE;
}
break;
case State.ERROR:
case State.STOPPED:
case State.FRAG_LOADING:
case State.PARSING:
case State.PARSED:
case State.ENDED:
break;
default:
break;
}
// check buffer
this._checkBuffer();
// check/update current fragment
this._checkFragmentChanged();
}
// Ironically the "idle" state is the on we do the most logic in it seems ....
// NOTE: Maybe we could rather schedule a check for buffer length after half of the currently
// played segment, or on pause/play/seek instead of naively checking every 100ms?
}, {
key: '_doTickIdle',
value: function _doTickIdle() {
var hls = this.hls,
config = hls.config,
media = this.media;
// if video not attached AND
// start fragment already requested OR start frag prefetch disable
// exit loop
// => if start level loaded and media not attached but start frag prefetch is enabled and start frag not requested yet, we will not exit loop
if (this.levelLastLoaded !== undefined && !media && (this.startFragRequested || !config.startFragPrefetch)) {
return true;
}
// if we have not yet loaded any fragment, start loading from start position
var pos = void 0;
if (this.loadedmetadata) {
pos = media.currentTime;
} else {
pos = this.nextLoadPosition;
}
// determine next load level
var level = hls.nextLoadLevel,
levelInfo = this.levels[level],
levelBitrate = levelInfo.bitrate,
maxBufLen = void 0;
// compute max Buffer Length that we could get from this load level, based on level bitrate. don't buffer more than 60 MB and more than 30s
if (levelBitrate) {
maxBufLen = Math.max(8 * config.maxBufferSize / levelBitrate, config.maxBufferLength);
} else {
maxBufLen = config.maxBufferLength;
}
maxBufLen = Math.min(maxBufLen, config.maxMaxBufferLength);
// determine next candidate fragment to be loaded, based on current position and end of buffer position
// ensure up to `config.maxMaxBufferLength` of buffer upfront
var bufferInfo = _bufferHelper2.default.bufferInfo(this.mediaBuffer ? this.mediaBuffer : media, pos, config.maxBufferHole),
bufferLen = bufferInfo.len;
// Stay idle if we are still with buffer margins
if (bufferLen >= maxBufLen) {
return true;
}
// if buffer length is less than maxBufLen try to load a new fragment ...
_logger.logger.trace('buffer length of ' + bufferLen.toFixed(3) + ' is below max of ' + maxBufLen.toFixed(3) + '. checking for more payload ...');
// set next load level : this will trigger a playlist load if needed
this.level = hls.nextLoadLevel = level;
var levelDetails = levelInfo.details;
// if level info not retrieved yet, switch state and wait for level retrieval
// if live playlist, ensure that new playlist has been refreshed to avoid loading/try to load
// a useless and outdated fragment (that might even introduce load error if it is already out of the live playlist)
if (typeof levelDetails === 'undefined' || levelDetails.live && this.levelLastLoaded !== level) {
this.state = State.WAITING_LEVEL;
return true;
}
// we just got done loading the final fragment, check if we need to finalize media stream
var fragPrevious = this.fragPrevious;
if (!levelDetails.live && fragPrevious && fragPrevious.sn === levelDetails.endSN) {
// fragPrevious is last fragment. retrieve level duration using last frag start offset + duration
// real duration might be lower than initial duration if there are drifts between real frag duration and playlist signaling
var duration = Math.min(media.duration, fragPrevious.start + fragPrevious.duration);
// if everything (almost) til the end is buffered, let's signal eos
// we don't compare exactly media.duration === bufferInfo.end as there could be some subtle media duration difference
// using half frag duration should help cope with these cases.
// also cope with almost zero last frag duration (max last frag duration with 200ms) refer to https://github.com/video-dev/hls.js/pull/657
if (duration - Math.max(bufferInfo.end, fragPrevious.start) <= Math.max(0.2, fragPrevious.duration / 2)) {
// Finalize the media stream
var data = {};
if (this.altAudio) {
data.type = 'video';
}
this.hls.trigger(_events2.default.BUFFER_EOS, data);
this.state = State.ENDED;
return true;
}
}
// if we have the levelDetails for the selected variant, lets continue enrichen our stream (load keys/fragments or trigger EOS, etc..)
return this._fetchPayloadOrEos(pos, bufferInfo, levelDetails);
}
}, {
key: '_fetchPayloadOrEos',
value: function _fetchPayloadOrEos(pos, bufferInfo, levelDetails) {
var fragPrevious = this.fragPrevious,
level = this.level,
fragments = levelDetails.fragments,
fragLen = fragments.length;
// empty playlist
if (fragLen === 0) {
return false;
}
// find fragment index, contiguous with end of buffer position
var start = fragments[0].start,
end = fragments[fragLen - 1].start + fragments[fragLen - 1].duration,
bufferEnd = bufferInfo.end,
frag = void 0;
if (levelDetails.initSegment && !levelDetails.initSegment.data) {
frag = levelDetails.initSegment;
} else {
// in case of live playlist we need to ensure that requested position is not located before playlist start
if (levelDetails.live) {
var initialLiveManifestSize = this.config.initialLiveManifestSize;
if (fragLen < initialLiveManifestSize) {
_logger.logger.warn('Can not start playback of a level, reason: not enough fragments ' + fragLen + ' < ' + initialLiveManifestSize);
return false;
}
frag = this._ensureFragmentAtLivePoint(levelDetails, bufferEnd, start, end, fragPrevious, fragments, fragLen);
// if it explicitely returns null don't load any fragment and exit function now
if (frag === null) {
return false;
}
} else {
// VoD playlist: if bufferEnd before start of playlist, load first fragment
if (bufferEnd < start) {
frag = fragments[0];
}
}
}
if (!frag) {
frag = this._findFragment(start, fragPrevious, fragLen, fragments, bufferEnd, end, levelDetails);
}
if (frag) {
return this._loadFragmentOrKey(frag, level, levelDetails, pos, bufferEnd);
}
return true;
}
}, {
key: '_ensureFragmentAtLivePoint',
value: function _ensureFragmentAtLivePoint(levelDetails, bufferEnd, start, end, fragPrevious, fragments, fragLen) {
var config = this.hls.config,
media = this.media;
var frag = void 0;
// check if requested position is within seekable boundaries :
//logger.log(`start/pos/bufEnd/seeking:${start.toFixed(3)}/${pos.toFixed(3)}/${bufferEnd.toFixed(3)}/${this.media.seeking}`);
var maxLatency = config.liveMaxLatencyDuration !== undefined ? config.liveMaxLatencyDuration : config.liveMaxLatencyDurationCount * levelDetails.targetduration;
if (bufferEnd < Math.max(start - config.maxFragLookUpTolerance, end - maxLatency)) {
var liveSyncPosition = this.liveSyncPosition = this.computeLivePosition(start, levelDetails);
_logger.logger.log('buffer end: ' + bufferEnd.toFixed(3) + ' is located too far from the end of live sliding playlist, reset currentTime to : ' + liveSyncPosition.toFixed(3));
bufferEnd = liveSyncPosition;
if (media && media.readyState && media.duration > liveSyncPosition) {
media.currentTime = liveSyncPosition;
}
}
// if end of buffer greater than live edge, don't load any fragment
// this could happen if live playlist intermittently slides in the past.
// level 1 loaded [182580161,182580167]
// level 1 loaded [182580162,182580169]
// Loading 182580168 of [182580162 ,182580169],level 1 ..
// Loading 182580169 of [182580162 ,182580169],level 1 ..
// level 1 loaded [182580162,182580168] <============= here we should have bufferEnd > end. in that case break to avoid reloading 182580168
// level 1 loaded [182580164,182580171]
//
// don't return null in case media not loaded yet (readystate === 0)
if (levelDetails.PTSKnown && bufferEnd > end && media && media.readyState) {
return null;
}
if (this.startFragRequested && !levelDetails.PTSKnown) {
/* we are switching level on live playlist, but we don't have any PTS info for that quality level ...
try to load frag matching with next SN.
even if SN are not synchronized between playlists, loading this frag will help us
compute playlist sliding and find the right one after in case it was not the right consecutive one */
if (fragPrevious) {
var targetSN = fragPrevious.sn + 1;
if (targetSN >= levelDetails.startSN && targetSN <= levelDetails.endSN) {
frag = fragments[targetSN - levelDetails.startSN];
_logger.logger.log('live playlist, switching playlist, load frag with next SN: ' + frag.sn);
}
}
if (!frag) {
/* we have no idea about which fragment should be loaded.
so let's load mid fragment. it will help computing playlist sliding and find the right one
*/
frag = fragments[Math.min(fragLen - 1, Math.round(fragLen / 2))];
_logger.logger.log('live playlist, switching playlist, unknown, load middle frag : ' + frag.sn);
}
}
return frag;
}
}, {
key: '_findFragment',
value: function _findFragment(start, fragPrevious, fragLen, fragments, bufferEnd, end, levelDetails) {
var config = this.hls.config;
var frag = void 0;
var foundFrag = void 0;
var maxFragLookUpTolerance = config.maxFragLookUpTolerance;
var fragNext = fragPrevious ? fragments[fragPrevious.sn - fragments[0].sn + 1] : undefined;
var fragmentWithinToleranceTest = function fragmentWithinToleranceTest(candidate) {
// offset should be within fragment boundary - config.maxFragLookUpTolerance
// this is to cope with situations like
// bufferEnd = 9.991
// frag[Ø] : [0,10]
// frag[1] : [10,20]
// bufferEnd is within frag[0] range ... although what we are expecting is to return frag[1] here
// frag start frag start+duration
// |-----------------------------|
// <---> <--->
// ...--------><-----------------------------><---------....
// previous frag matching fragment next frag
// return -1 return 0 return 1
//logger.log(`level/sn/start/end/bufEnd:${level}/${candidate.sn}/${candidate.start}/${(candidate.start+candidate.duration)}/${bufferEnd}`);
// Set the lookup tolerance to be small enough to detect the current segment - ensures we don't skip over very small segments
var candidateLookupTolerance = Math.min(maxFragLookUpTolerance, candidate.duration);
if (candidate.start + candidate.duration - candidateLookupTolerance <= bufferEnd) {
return 1;
} // if maxFragLookUpTolerance will have negative value then don't return -1 for first element
else if (candidate.start - candidateLookupTolerance > bufferEnd && candidate.start) {
return -1;
}
return 0;
};
if (bufferEnd < end) {
if (bufferEnd > end - maxFragLookUpTolerance) {
maxFragLookUpTolerance = 0;
}
// Prefer the next fragment if it's within tolerance
if (fragNext && !fragmentWithinToleranceTest(fragNext)) {
foundFrag = fragNext;
} else {
foundFrag = _binarySearch2.default.search(fragments, fragmentWithinToleranceTest);
}
} else {
// reach end of playlist
foundFrag = fragments[fragLen - 1];
}
if (foundFrag) {
frag = foundFrag;
var curSNIdx = frag.sn - levelDetails.startSN;
var sameLevel = fragPrevious && frag.level === fragPrevious.level;
var prevFrag = fragments[curSNIdx - 1];
var nextFrag = fragments[curSNIdx + 1];
//logger.log('find SN matching with pos:' + bufferEnd + ':' + frag.sn);
if (sameLevel && frag.sn === fragPrevious.sn) {
if (frag.sn < levelDetails.endSN) {
var deltaPTS = fragPrevious.deltaPTS;
// if there is a significant delta between audio and video, larger than max allowed hole,
// and if previous remuxed fragment did not start with a keyframe. (fragPrevious.dropped)
// let's try to load previous fragment again to get last keyframe
// then we will reload again current fragment (that way we should be able to fill the buffer hole ...)
if (deltaPTS && deltaPTS > config.maxBufferHole && fragPrevious.dropped && curSNIdx) {
frag = prevFrag;
_logger.logger.warn('SN just loaded, with large PTS gap between audio and video, maybe frag is not starting with a keyframe ? load previous one to try to overcome this');
// decrement previous frag load counter to avoid frag loop loading error when next fragment will get reloaded
fragPrevious.loadCounter--;
} else {
frag = nextFrag;
_logger.logger.log('SN just loaded, load next one: ' + frag.sn);
}
} else {
frag = null;
}
} else if (frag.dropped && !sameLevel) {
// Only backtrack a max of 1 consecutive fragment to prevent sliding back too far when little or no frags start with keyframes
if (nextFrag && nextFrag.backtracked) {
_logger.logger.warn('Already backtracked from fragment ' + (curSNIdx + 1) + ', will not backtrack to fragment ' + curSNIdx + '. Loading fragment ' + (curSNIdx + 1));
frag = nextFrag;
} else {
// If a fragment has dropped frames and it's in a different level/sequence, load the previous fragment to try and find the keyframe
// Reset the dropped count now since it won't be reset until we parse the fragment again, which prevents infinite backtracking on the same segment
_logger.logger.warn('Loaded fragment with dropped frames, backtracking 1 segment to find a keyframe');
frag.dropped = 0;
if (prevFrag) {
if (prevFrag.loadCounter) {
prevFrag.loadCounter--;
}
frag = prevFrag;
} else {
frag = null;
}
}
}
}
return frag;
}
}, {
key: '_loadFragmentOrKey',
value: function _loadFragmentOrKey(frag, level, levelDetails, pos, bufferEnd) {
var hls = this.hls,
config = hls.config;
//logger.log('loading frag ' + i +',pos/bufEnd:' + pos.toFixed(3) + '/' + bufferEnd.toFixed(3));
if (frag.decryptdata && frag.decryptdata.uri != null && frag.decryptdata.key == null) {
_logger.logger.log('Loading key for ' + frag.sn + ' of [' + levelDetails.startSN + ' ,' + levelDetails.endSN + '],level ' + level);
this.state = State.KEY_LOADING;
hls.trigger(_events2.default.KEY_LOADING, { frag: frag });
} else {
_logger.logger.log('Loading ' + frag.sn + ' of [' + levelDetails.startSN + ' ,' + levelDetails.endSN + '],level ' + level + ', currentTime:' + pos.toFixed(3) + ',bufferEnd:' + bufferEnd.toFixed(3));
// ensure that we are not reloading the same fragments in loop ...
if (this.fragLoadIdx !== undefined) {
this.fragLoadIdx++;
} else {
this.fragLoadIdx = 0;
}
if (frag.loadCounter) {
frag.loadCounter++;
var maxThreshold = config.fragLoadingLoopThreshold;
// if this frag has already been loaded 3 times, and if it has been reloaded recently
if (frag.loadCounter > maxThreshold && Math.abs(this.fragLoadIdx - frag.loadIdx) < maxThreshold) {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_LOOP_LOADING_ERROR, fatal: false, frag: frag });
return false;
}
} else {
frag.loadCounter = 1;
}
frag.loadIdx = this.fragLoadIdx;
this.fragCurrent = frag;
this.startFragRequested = true;
if (!isNaN(frag.sn)) {
this.nextLoadPosition = frag.start + frag.duration;
}
frag.autoLevel = hls.autoLevelEnabled;
frag.bitrateTest = this.bitrateTest;
hls.trigger(_events2.default.FRAG_LOADING, { frag: frag });
// lazy demuxer init, as this could take some time ... do it during frag loading
if (!this.demuxer) {
this.demuxer = new _demuxer2.default(hls, 'main');
}
this.state = State.FRAG_LOADING;
return true;
}
}
}, {
key: 'getBufferedFrag',
value: function getBufferedFrag(position) {
return _binarySearch2.default.search(this._bufferedFrags, function (frag) {
if (position < frag.startPTS) {
return -1;
} else if (position > frag.endPTS) {
return 1;
}
return 0;
});
}
}, {
key: 'followingBufferedFrag',
value: function followingBufferedFrag(frag) {
if (frag) {
// try to get range of next fragment (500ms after this range)
return this.getBufferedFrag(frag.endPTS + 0.5);
}
return null;
}
}, {
key: '_checkFragmentChanged',
value: function _checkFragmentChanged() {
var fragPlayingCurrent,
currentTime,
video = this.media;
if (video && video.readyState && video.seeking === false) {
currentTime = video.currentTime;
/* if video element is in seeked state, currentTime can only increase.
(assuming that playback rate is positive ...)
As sometimes currentTime jumps back to zero after a
media decode error, check this, to avoid seeking back to
wrong position after a media decode error
*/
if (currentTime > video.playbackRate * this.lastCurrentTime) {
this.lastCurrentTime = currentTime;
}
if (_bufferHelper2.default.isBuffered(video, currentTime)) {
fragPlayingCurrent = this.getBufferedFrag(currentTime);
} else if (_bufferHelper2.default.isBuffered(video, currentTime + 0.1)) {
/* ensure that FRAG_CHANGED event is triggered at startup,
when first video frame is displayed and playback is paused.
add a tolerance of 100ms, in case current position is not buffered,
check if current pos+100ms is buffered and use that buffer range
for FRAG_CHANGED event reporting */
fragPlayingCurrent = this.getBufferedFrag(currentTime + 0.1);
}
if (fragPlayingCurrent) {
var fragPlaying = fragPlayingCurrent;
if (fragPlaying !== this.fragPlaying) {
this.hls.trigger(_events2.default.FRAG_CHANGED, { frag: fragPlaying });
var fragPlayingLevel = fragPlaying.level;
if (!this.fragPlaying || this.fragPlaying.level !== fragPlayingLevel) {
this.hls.trigger(_events2.default.LEVEL_SWITCHED, { level: fragPlayingLevel });
}
this.fragPlaying = fragPlaying;
}
}
}
}
/*
on immediate level switch :
- pause playback if playing
- cancel any pending load request
- and trigger a buffer flush
*/
}, {
key: 'immediateLevelSwitch',
value: function immediateLevelSwitch() {
_logger.logger.log('immediateLevelSwitch');
if (!this.immediateSwitch) {
this.immediateSwitch = true;
var media = this.media,
previouslyPaused = void 0;
if (media) {
previouslyPaused = media.paused;
media.pause();
} else {
// don't restart playback after instant level switch in case media not attached
previouslyPaused = true;
}
this.previouslyPaused = previouslyPaused;
}
var fragCurrent = this.fragCurrent;
if (fragCurrent && fragCurrent.loader) {
fragCurrent.loader.abort();
}
this.fragCurrent = null;
// increase fragment load Index to avoid frag loop loading error after buffer flush
this.fragLoadIdx += 2 * this.config.fragLoadingLoopThreshold;
// flush everything
this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
}
/*
on immediate level switch end, after new fragment has been buffered :
- nudge video decoder by slightly adjusting video currentTime (if currentTime buffered)
- resume the playback if needed
*/
}, {
key: 'immediateLevelSwitchEnd',
value: function immediateLevelSwitchEnd() {
var media = this.media;
if (media && media.buffered.length) {
this.immediateSwitch = false;
if (_bufferHelper2.default.isBuffered(media, media.currentTime)) {
// only nudge if currentTime is buffered
media.currentTime -= 0.0001;
}
if (!this.previouslyPaused) {
media.play();
}
}
}
}, {
key: 'nextLevelSwitch',
value: function nextLevelSwitch() {
/* try to switch ASAP without breaking video playback :
in order to ensure smooth but quick level switching,
we need to find the next flushable buffer range
we should take into account new segment fetch time
*/
var media = this.media;
// ensure that media is defined and that metadata are available (to retrieve currentTime)
if (media && media.readyState) {
var fetchdelay = void 0,
fragPlayingCurrent = void 0,
nextBufferedFrag = void 0;
// increase fragment load Index to avoid frag loop loading error after buffer flush
this.fragLoadIdx += 2 * this.config.fragLoadingLoopThreshold;
fragPlayingCurrent = this.getBufferedFrag(media.currentTime);
if (fragPlayingCurrent && fragPlayingCurrent.startPTS > 1) {
// flush buffer preceding current fragment (flush until current fragment start offset)
// minus 1s to avoid video freezing, that could happen if we flush keyframe of current video ...
this.flushMainBuffer(0, fragPlayingCurrent.startPTS - 1);
}
if (!media.paused) {
// add a safety delay of 1s
var nextLevelId = this.hls.nextLoadLevel,
nextLevel = this.levels[nextLevelId],
fragLastKbps = this.fragLastKbps;
if (fragLastKbps && this.fragCurrent) {
fetchdelay = this.fragCurrent.duration * nextLevel.bitrate / (1000 * fragLastKbps) + 1;
} else {
fetchdelay = 0;
}
} else {
fetchdelay = 0;
}
//logger.log('fetchdelay:'+fetchdelay);
// find buffer range that will be reached once new fragment will be fetched
nextBufferedFrag = this.getBufferedFrag(media.currentTime + fetchdelay);
if (nextBufferedFrag) {
// we can flush buffer range following this one without stalling playback
nextBufferedFrag = this.followingBufferedFrag(nextBufferedFrag);
if (nextBufferedFrag) {
// if we are here, we can also cancel any loading/demuxing in progress, as they are useless
var fragCurrent = this.fragCurrent;
if (fragCurrent && fragCurrent.loader) {
fragCurrent.loader.abort();
}
this.fragCurrent = null;
// flush position is the start position of this new buffer
this.flushMainBuffer(nextBufferedFrag.startPTS, Number.POSITIVE_INFINITY);
}
}
}
}
}, {
key: 'flushMainBuffer',
value: function flushMainBuffer(startOffset, endOffset) {
this.state = State.BUFFER_FLUSHING;
var flushScope = { startOffset: startOffset, endOffset: endOffset };
// if alternate audio tracks are used, only flush video, otherwise flush everything
if (this.altAudio) {
flushScope.type = 'video';
}
this.hls.trigger(_events2.default.BUFFER_FLUSHING, flushScope);
}
}, {
key: 'onMediaAttached',
value: function onMediaAttached(data) {
var media = this.media = this.mediaBuffer = data.media;
this.onvseeking = this.onMediaSeeking.bind(this);
this.onvseeked = this.onMediaSeeked.bind(this);
this.onvended = this.onMediaEnded.bind(this);
media.addEventListener('seeking', this.onvseeking);
media.addEventListener('seeked', this.onvseeked);
media.addEventListener('ended', this.onvended);
var config = this.config;
if (this.levels && config.autoStartLoad) {
this.hls.startLoad(config.startPosition);
}
}
}, {
key: 'onMediaDetaching',
value: function onMediaDetaching() {
var media = this.media;
if (media && media.ended) {
_logger.logger.log('MSE detaching and video ended, reset startPosition');
this.startPosition = this.lastCurrentTime = 0;
}
// reset fragment loading counter on MSE detaching to avoid reporting FRAG_LOOP_LOADING_ERROR after error recovery
var levels = this.levels;
if (levels) {
// reset fragment load counter
levels.forEach(function (level) {
if (level.details) {
level.details.fragments.forEach(function (fragment) {
fragment.loadCounter = undefined;
fragment.backtracked = undefined;
});
}
});
}
// remove video listeners
if (media) {
media.removeEventListener('seeking', this.onvseeking);
media.removeEventListener('seeked', this.onvseeked);
media.removeEventListener('ended', this.onvended);
this.onvseeking = this.onvseeked = this.onvended = null;
}
this.media = this.mediaBuffer = null;
this.loadedmetadata = false;
this.stopLoad();
}
}, {
key: 'onMediaSeeking',
value: function onMediaSeeking() {
var media = this.media,
currentTime = media ? media.currentTime : undefined,
config = this.config;
_logger.logger.log('media seeking to ' + currentTime.toFixed(3));
if (this.state === State.FRAG_LOADING) {
var mediaBuffer = this.mediaBuffer ? this.mediaBuffer : media;
var bufferInfo = _bufferHelper2.default.bufferInfo(mediaBuffer, currentTime, this.config.maxBufferHole),
fragCurrent = this.fragCurrent;
// check if we are seeking to a unbuffered area AND if frag loading is in progress
if (bufferInfo.len === 0 && fragCurrent) {
var tolerance = config.maxFragLookUpTolerance,
fragStartOffset = fragCurrent.start - tolerance,
fragEndOffset = fragCurrent.start + fragCurrent.duration + tolerance;
// check if we seek position will be out of currently loaded frag range : if out cancel frag load, if in, don't do anything
if (currentTime < fragStartOffset || currentTime > fragEndOffset) {
if (fragCurrent.loader) {
_logger.logger.log('seeking outside of buffer while fragment load in progress, cancel fragment load');
fragCurrent.loader.abort();
}
this.fragCurrent = null;
this.fragPrevious = null;
// switch to IDLE state to load new fragment
this.state = State.IDLE;
} else {
_logger.logger.log('seeking outside of buffer but within currently loaded fragment range');
}
}
} else if (this.state === State.ENDED) {
// switch to IDLE state to check for potential new fragment
this.state = State.IDLE;
}
if (media) {
this.lastCurrentTime = currentTime;
}
// avoid reporting fragment loop loading error in case user is seeking several times on same position
if (this.state !== State.FRAG_LOADING && this.fragLoadIdx !== undefined) {
this.fragLoadIdx += 2 * config.fragLoadingLoopThreshold;
}
// in case seeking occurs although no media buffered, adjust startPosition and nextLoadPosition to seek target
if (!this.loadedmetadata) {
this.nextLoadPosition = this.startPosition = currentTime;
}
// tick to speed up processing
this.tick();
}
}, {
key: 'onMediaSeeked',
value: function onMediaSeeked() {
_logger.logger.log('media seeked to ' + this.media.currentTime.toFixed(3));
// tick to speed up FRAGMENT_PLAYING triggering
this.tick();
}
}, {
key: 'onMediaEnded',
value: function onMediaEnded() {
_logger.logger.log('media ended');
// reset startPosition and lastCurrentTime to restart playback @ stream beginning
this.startPosition = this.lastCurrentTime = 0;
}
}, {
key: 'onManifestLoading',
value: function onManifestLoading() {
// reset buffer on manifest loading
_logger.logger.log('trigger BUFFER_RESET');
this.hls.trigger(_events2.default.BUFFER_RESET);
this._bufferedFrags = [];
this.stalled = false;
this.startPosition = this.lastCurrentTime = 0;
}
}, {
key: 'onManifestParsed',
value: function onManifestParsed(data) {
var aac = false,
heaac = false,
codec;
data.levels.forEach(function (level) {
// detect if we have different kind of audio codecs used amongst playlists
codec = level.audioCodec;
if (codec) {
if (codec.indexOf('mp4a.40.2') !== -1) {
aac = true;
}
if (codec.indexOf('mp4a.40.5') !== -1) {
heaac = true;
}
}
});
this.audioCodecSwitch = aac && heaac;
if (this.audioCodecSwitch) {
_logger.logger.log('both AAC/HE-AAC audio found in levels; declaring level codec as HE-AAC');
}
this.levels = data.levels;
this.startLevelLoaded = false;
this.startFragRequested = false;
var config = this.config;
if (config.autoStartLoad || this.forceStartLoad) {
this.hls.startLoad(config.startPosition);
}
}
}, {
key: 'onLevelLoaded',
value: function onLevelLoaded(data) {
var newDetails = data.details,
newLevelId = data.level,
curLevel = this.levels[newLevelId],
duration = newDetails.totalduration,
sliding = 0;
_logger.logger.log('level ' + newLevelId + ' loaded [' + newDetails.startSN + ',' + newDetails.endSN + '],duration:' + duration);
this.levelLastLoaded = newLevelId;
if (newDetails.live) {
var curDetails = curLevel.details;
if (curDetails && newDetails.fragments.length > 0) {
// we already have details for that level, merge them
_levelHelper2.default.mergeDetails(curDetails, newDetails);
sliding = newDetails.fragments[0].start;
this.liveSyncPosition = this.computeLivePosition(sliding, curDetails);
if (newDetails.PTSKnown) {
_logger.logger.log('live playlist sliding:' + sliding.toFixed(3));
} else {
_logger.logger.log('live playlist - outdated PTS, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
_logger.logger.log('live playlist - first load, unknown sliding');
}
} else {
newDetails.PTSKnown = false;
}
// override level info
curLevel.details = newDetails;
this.hls.trigger(_events2.default.LEVEL_UPDATED, { details: newDetails, level: newLevelId });
if (this.startFragRequested === false) {
// compute start position if set to -1. use it straight away if value is defined
if (this.startPosition === -1 || this.lastCurrentTime === -1) {
// first, check if start time offset has been set in playlist, if yes, use this value
var startTimeOffset = newDetails.startTimeOffset;
if (!isNaN(startTimeOffset)) {
if (startTimeOffset < 0) {
_logger.logger.log('negative start time offset ' + startTimeOffset + ', count from end of last fragment');
startTimeOffset = sliding + duration + startTimeOffset;
}
_logger.logger.log('start time offset found in playlist, adjust startPosition to ' + startTimeOffset);
this.startPosition = startTimeOffset;
} else {
// if live playlist, set start position to be fragment N-this.config.liveSyncDurationCount (usually 3)
if (newDetails.live) {
this.startPosition = this.computeLivePosition(sliding, newDetails);
_logger.logger.log('configure startPosition to ' + this.startPosition);
} else {
this.startPosition = 0;
}
}
this.lastCurrentTime = this.startPosition;
}
this.nextLoadPosition = this.startPosition;
}
// only switch batck to IDLE state if we were waiting for level to start downloading a new fragment
if (this.state === State.WAITING_LEVEL) {
this.state = State.IDLE;
}
//trigger handler right now
this.tick();
}
}, {
key: 'onKeyLoaded',
value: function onKeyLoaded() {
if (this.state === State.KEY_LOADING) {
this.state = State.IDLE;
this.tick();
}
}
}, {
key: 'onFragLoaded',
value: function onFragLoaded(data) {
var fragCurrent = this.fragCurrent,
fragLoaded = data.frag;
if (this.state === State.FRAG_LOADING && fragCurrent && fragLoaded.type === 'main' && fragLoaded.level === fragCurrent.level && fragLoaded.sn === fragCurrent.sn) {
var stats = data.stats,
currentLevel = this.levels[fragCurrent.level],
details = currentLevel.details;
_logger.logger.log('Loaded ' + fragCurrent.sn + ' of [' + details.startSN + ' ,' + details.endSN + '],level ' + fragCurrent.level);
// reset frag bitrate test in any case after frag loaded event
this.bitrateTest = false;
this.stats = stats;
// if this frag was loaded to perform a bitrate test AND if hls.nextLoadLevel is greater than 0
// then this means that we should be able to load a fragment at a higher quality level
if (fragLoaded.bitrateTest === true && this.hls.nextLoadLevel) {
// switch back to IDLE state ... we just loaded a fragment to determine adequate start bitrate and initialize autoswitch algo
this.state = State.IDLE;
this.startFragRequested = false;
stats.tparsed = stats.tbuffered = performance.now();
this.hls.trigger(_events2.default.FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'main' });
this.tick();
} else if (fragLoaded.sn === 'initSegment') {
this.state = State.IDLE;
stats.tparsed = stats.tbuffered = performance.now();
details.initSegment.data = data.payload;
this.hls.trigger(_events2.default.FRAG_BUFFERED, { stats: stats, frag: fragCurrent, id: 'main' });
this.tick();
} else {
this.state = State.PARSING;
// transmux the MPEG-TS data to ISO-BMFF segments
var duration = details.totalduration,
level = fragCurrent.level,
sn = fragCurrent.sn,
audioCodec = this.config.defaultAudioCodec || currentLevel.audioCodec;
if (this.audioCodecSwap) {
_logger.logger.log('swapping playlist audio codec');
if (audioCodec === undefined) {
audioCodec = this.lastAudioCodec;
}
if (audioCodec) {
if (audioCodec.indexOf('mp4a.40.5') !== -1) {
audioCodec = 'mp4a.40.2';
} else {
audioCodec = 'mp4a.40.5';
}
}
}
this.pendingBuffering = true;
this.appended = false;
_logger.logger.log('Parsing ' + sn + ' of [' + details.startSN + ' ,' + details.endSN + '],level ' + level + ', cc ' + fragCurrent.cc);
var demuxer = this.demuxer;
if (!demuxer) {
demuxer = this.demuxer = new _demuxer2.default(this.hls, 'main');
}
// time Offset is accurate if level PTS is known, or if playlist is not sliding (not live) and if media is not seeking (this is to overcome potential timestamp drifts between playlists and fragments)
var media = this.media;
var mediaSeeking = media && media.seeking;
var accurateTimeOffset = !mediaSeeking && (details.PTSKnown || !details.live);
var initSegmentData = details.initSegment ? details.initSegment.data : [];
demuxer.push(data.payload, initSegmentData, audioCodec, currentLevel.videoCodec, fragCurrent, duration, accurateTimeOffset, undefined);
}
}
this.fragLoadError = 0;
}
}, {
key: 'onFragParsingInitSegment',
value: function onFragParsingInitSegment(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
var tracks = data.tracks,
trackName,
track;
// if audio track is expected to come from audio stream controller, discard any coming from main
if (tracks.audio && this.altAudio) {
delete tracks.audio;
}
// include levelCodec in audio and video tracks
track = tracks.audio;
if (track) {
var audioCodec = this.levels[this.level].audioCodec,
ua = navigator.userAgent.toLowerCase();
if (audioCodec && this.audioCodecSwap) {
_logger.logger.log('swapping playlist audio codec');
if (audioCodec.indexOf('mp4a.40.5') !== -1) {
audioCodec = 'mp4a.40.2';
} else {
audioCodec = 'mp4a.40.5';
}
}
// in case AAC and HE-AAC audio codecs are signalled in manifest
// force HE-AAC , as it seems that most browsers prefers that way,
// except for mono streams OR on FF
// these conditions might need to be reviewed ...
if (this.audioCodecSwitch) {
// don't force HE-AAC if mono stream
if (track.metadata.channelCount !== 1 &&
// don't force HE-AAC if firefox
ua.indexOf('firefox') === -1) {
audioCodec = 'mp4a.40.5';
}
}
// HE-AAC is broken on Android, always signal audio codec as AAC even if variant manifest states otherwise
if (ua.indexOf('android') !== -1 && track.container !== 'audio/mpeg') {
// Exclude mpeg audio
audioCodec = 'mp4a.40.2';
_logger.logger.log('Android: force audio codec to ' + audioCodec);
}
track.levelCodec = audioCodec;
track.id = data.id;
}
track = tracks.video;
if (track) {
track.levelCodec = this.levels[this.level].videoCodec;
track.id = data.id;
}
this.hls.trigger(_events2.default.BUFFER_CODECS, tracks);
// loop through tracks that are going to be provided to bufferController
for (trackName in tracks) {
track = tracks[trackName];
_logger.logger.log('main track:' + trackName + ',container:' + track.container + ',codecs[level/parsed]=[' + track.levelCodec + '/' + track.codec + ']');
var initSegment = track.initSegment;
if (initSegment) {
this.appended = true;
// arm pending Buffering flag before appending a segment
this.pendingBuffering = true;
this.hls.trigger(_events2.default.BUFFER_APPENDING, { type: trackName, data: initSegment, parent: 'main', content: 'initSegment' });
}
}
//trigger handler right now
this.tick();
}
}
}, {
key: 'onFragParsingData',
value: function onFragParsingData(data) {
var _this2 = this;
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && !(data.type === 'audio' && this.altAudio) && // filter out main audio if audio track is loaded through audio stream controller
this.state === State.PARSING) {
var level = this.levels[this.level],
frag = fragCurrent;
if (isNaN(data.endPTS)) {
data.endPTS = data.startPTS + fragCurrent.duration;
data.endDTS = data.startDTS + fragCurrent.duration;
}
_logger.logger.log('Parsed ' + data.type + ',PTS:[' + data.startPTS.toFixed(3) + ',' + data.endPTS.toFixed(3) + '],DTS:[' + data.startDTS.toFixed(3) + '/' + data.endDTS.toFixed(3) + '],nb:' + data.nb + ',dropped:' + (data.dropped || 0));
// Detect gaps in a fragment and try to fix it by finding a keyframe in the previous fragment (see _findFragments)
if (data.type === 'video') {
frag.dropped = data.dropped;
if (frag.dropped) {
if (!frag.backtracked) {
// Return back to the IDLE state without appending to buffer
// Causes findFragments to backtrack a segment and find the keyframe
// Audio fragments arriving before video sets the nextLoadPosition, causing _findFragments to skip the backtracked fragment
frag.backtracked = true;
this.nextLoadPosition = data.startPTS;
this.state = State.IDLE;
this.tick();
return;
} else {
_logger.logger.warn('Already backtracked on this fragment, appending with the gap');
}
} else {
// Only reset the backtracked flag if we've loaded the frag without any dropped frames
frag.backtracked = false;
}
}
var drift = _levelHelper2.default.updateFragPTSDTS(level.details, frag.sn, data.startPTS, data.endPTS, data.startDTS, data.endDTS),
hls = this.hls;
hls.trigger(_events2.default.LEVEL_PTS_UPDATED, { details: level.details, level: this.level, drift: drift, type: data.type, start: data.startPTS, end: data.endPTS });
// has remuxer dropped video frames located before first keyframe ?
[data.data1, data.data2].forEach(function (buffer) {
// only append in PARSING state (rationale is that an appending error could happen synchronously on first segment appending)
// in that case it is useless to append following segments
if (buffer && buffer.length && _this2.state === State.PARSING) {
_this2.appended = true;
// arm pending Buffering flag before appending a segment
_this2.pendingBuffering = true;
hls.trigger(_events2.default.BUFFER_APPENDING, { type: data.type, data: buffer, parent: 'main', content: 'data' });
}
});
//trigger handler right now
this.tick();
}
}
}, {
key: 'onFragParsed',
value: function onFragParsed(data) {
var fragCurrent = this.fragCurrent;
var fragNew = data.frag;
if (fragCurrent && data.id === 'main' && fragNew.sn === fragCurrent.sn && fragNew.level === fragCurrent.level && this.state === State.PARSING) {
this.stats.tparsed = performance.now();
this.state = State.PARSED;
this._checkAppendedParsed();
}
}
}, {
key: 'onAudioTrackSwitching',
value: function onAudioTrackSwitching(data) {
// if any URL found on new audio track, it is an alternate audio track
var altAudio = !!data.url,
trackId = data.id;
// if we switch on main audio, ensure that main fragment scheduling is synced with media.buffered
// don't do anything if we switch to alt audio: audio stream controller is handling it.
// we will just have to change buffer scheduling on audioTrackSwitched
if (!altAudio) {
if (this.mediaBuffer !== this.media) {
_logger.logger.log('switching on main audio, use media.buffered to schedule main fragment loading');
this.mediaBuffer = this.media;
var fragCurrent = this.fragCurrent;
// we need to refill audio buffer from main: cancel any frag loading to speed up audio switch
if (fragCurrent.loader) {
_logger.logger.log('switching to main audio track, cancel main fragment load');
fragCurrent.loader.abort();
}
this.fragCurrent = null;
this.fragPrevious = null;
// destroy demuxer to force init segment generation (following audio switch)
if (this.demuxer) {
this.demuxer.destroy();
this.demuxer = null;
}
// switch to IDLE state to load new fragment
this.state = State.IDLE;
}
var hls = this.hls;
// switching to main audio, flush all audio and trigger track switched
hls.trigger(_events2.default.BUFFER_FLUSHING, { startOffset: 0, endOffset: Number.POSITIVE_INFINITY, type: 'audio' });
hls.trigger(_events2.default.AUDIO_TRACK_SWITCHED, { id: trackId });
this.altAudio = false;
}
}
}, {
key: 'onAudioTrackSwitched',
value: function onAudioTrackSwitched(data) {
var trackId = data.id,
altAudio = !!this.hls.audioTracks[trackId].url;
if (altAudio) {
var videoBuffer = this.videoBuffer;
// if we switched on alternate audio, ensure that main fragment scheduling is synced with video sourcebuffer buffered
if (videoBuffer && this.mediaBuffer !== videoBuffer) {
_logger.logger.log('switching on alternate audio, use video.buffered to schedule main fragment loading');
this.mediaBuffer = videoBuffer;
}
}
this.altAudio = altAudio;
this.tick();
}
}, {
key: 'onBufferCreated',
value: function onBufferCreated(data) {
var tracks = data.tracks,
mediaTrack = void 0,
name = void 0,
alternate = false;
for (var type in tracks) {
var track = tracks[type];
if (track.id === 'main') {
name = type;
mediaTrack = track;
// keep video source buffer reference
if (type === 'video') {
this.videoBuffer = tracks[type].buffer;
}
} else {
alternate = true;
}
}
if (alternate && mediaTrack) {
_logger.logger.log('alternate track found, use ' + name + '.buffered to schedule main fragment loading');
this.mediaBuffer = mediaTrack.buffer;
} else {
this.mediaBuffer = this.media;
}
}
}, {
key: 'onBufferAppended',
value: function onBufferAppended(data) {
if (data.parent === 'main') {
var state = this.state;
if (state === State.PARSING || state === State.PARSED) {
// check if all buffers have been appended
this.pendingBuffering = data.pending > 0;
this._checkAppendedParsed();
}
}
}
}, {
key: '_checkAppendedParsed',
value: function _checkAppendedParsed() {
//trigger handler right now
if (this.state === State.PARSED && (!this.appended || !this.pendingBuffering)) {
var frag = this.fragCurrent;
if (frag) {
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
_logger.logger.log('main buffered : ' + _timeRanges2.default.toString(media.buffered));
// filter fragments potentially evicted from buffer. this is to avoid memleak on live streams
var bufferedFrags = this._bufferedFrags.filter(function (frag) {
return _bufferHelper2.default.isBuffered(media, (frag.startPTS + frag.endPTS) / 2);
});
// push new range
bufferedFrags.push(frag);
// sort frags, as we use BinarySearch for lookup in getBufferedFrag ...
this._bufferedFrags = bufferedFrags.sort(function (a, b) {
return a.startPTS - b.startPTS;
});
this.fragPrevious = frag;
var stats = this.stats;
stats.tbuffered = performance.now();
// we should get rid of this.fragLastKbps
this.fragLastKbps = Math.round(8 * stats.total / (stats.tbuffered - stats.tfirst));
this.hls.trigger(_events2.default.FRAG_BUFFERED, { stats: stats, frag: frag, id: 'main' });
this.state = State.IDLE;
}
this.tick();
}
}
}, {
key: 'onError',
value: function onError(data) {
var frag = data.frag || this.fragCurrent;
// don't handle frag error not related to main fragment
if (frag && frag.type !== 'main') {
return;
}
var media = this.media,
// 0.5 : tolerance needed as some browsers stalls playback before reaching buffered end
mediaBuffered = media && _bufferHelper2.default.isBuffered(media, media.currentTime) && _bufferHelper2.default.isBuffered(media, media.currentTime + 0.5);
switch (data.details) {
case _errors.ErrorDetails.FRAG_LOAD_ERROR:
case _errors.ErrorDetails.FRAG_LOAD_TIMEOUT:
case _errors.ErrorDetails.KEY_LOAD_ERROR:
case _errors.ErrorDetails.KEY_LOAD_TIMEOUT:
if (!data.fatal) {
var loadError = this.fragLoadError;
if (loadError) {
loadError++;
} else {
loadError = 1;
}
var config = this.config;
// keep retrying / don't raise fatal network error if current position is buffered or if in automode with current level not 0
if (loadError <= config.fragLoadingMaxRetry || mediaBuffered || frag.autoLevel && frag.level) {
this.fragLoadError = loadError;
// reset load counter to avoid frag loop loading error
frag.loadCounter = 0;
// exponential backoff capped to config.fragLoadingMaxRetryTimeout
var delay = Math.min(Math.pow(2, loadError - 1) * config.fragLoadingRetryDelay, config.fragLoadingMaxRetryTimeout);
_logger.logger.warn('mediaController: frag loading failed, retry in ' + delay + ' ms');
this.retryDate = performance.now() + delay;
// retry loading state
// if loadedmetadata is not set, it means that we are emergency switch down on first frag
// in that case, reset startFragRequested flag
if (!this.loadedmetadata) {
this.startFragRequested = false;
this.nextLoadPosition = this.startPosition;
}
this.state = State.FRAG_LOADING_WAITING_RETRY;
} else {
_logger.logger.error('mediaController: ' + data.details + ' reaches max retry, redispatch as fatal ...');
// switch error to fatal
data.fatal = true;
this.state = State.ERROR;
}
}
break;
case _errors.ErrorDetails.FRAG_LOOP_LOADING_ERROR:
if (!data.fatal) {
// if buffer is not empty
if (mediaBuffered) {
// try to reduce max buffer length : rationale is that we could get
// frag loop loading error because of buffer eviction
this._reduceMaxBufferLength(frag.duration);
this.state = State.IDLE;
} else {
// buffer empty. report as fatal if in manual mode or if lowest level.
// level controller takes care of emergency switch down logic
if (!frag.autoLevel || frag.level === 0) {
// switch error to fatal
data.fatal = true;
this.state = State.ERROR;
}
}
}
break;
case _errors.ErrorDetails.LEVEL_LOAD_ERROR:
case _errors.ErrorDetails.LEVEL_LOAD_TIMEOUT:
if (this.state !== State.ERROR) {
if (data.fatal) {
// if fatal error, stop processing
this.state = State.ERROR;
_logger.logger.warn('streamController: ' + data.details + ',switch to ' + this.state + ' state ...');
} else {
// in cas of non fatal error while waiting level load to be completed, switch back to IDLE
if (this.state === State.WAITING_LEVEL) {
this.state = State.IDLE;
}
}
}
break;
case _errors.ErrorDetails.BUFFER_FULL_ERROR:
// if in appending state
if (data.parent === 'main' && (this.state === State.PARSING || this.state === State.PARSED)) {
// reduce max buf len if current position is buffered
if (mediaBuffered) {
this._reduceMaxBufferLength(this.config.maxBufferLength);
this.state = State.IDLE;
} else {
// current position is not buffered, but browser is still complaining about buffer full error
// this happens on IE/Edge, refer to https://github.com/video-dev/hls.js/pull/708
// in that case flush the whole buffer to recover
_logger.logger.warn('buffer full error also media.currentTime is not buffered, flush everything');
this.fragCurrent = null;
// flush everything
this.flushMainBuffer(0, Number.POSITIVE_INFINITY);
}
}
break;
default:
break;
}
}
}, {
key: '_reduceMaxBufferLength',
value: function _reduceMaxBufferLength(minLength) {
var config = this.config;
if (config.maxMaxBufferLength >= minLength) {
// reduce max buffer length as it might be too high. we do this to avoid loop flushing ...
config.maxMaxBufferLength /= 2;
_logger.logger.warn('main:reduce max buffer length to ' + config.maxMaxBufferLength + 's');
// increase fragment load Index to avoid frag loop loading error after buffer flush
this.fragLoadIdx += 2 * config.fragLoadingLoopThreshold;
}
}
}, {
key: '_checkBuffer',
value: function _checkBuffer() {
var media = this.media;
// if ready state different from HAVE_NOTHING (numeric value 0), we are allowed to seek
if (media && media.readyState) {
var currentTime = media.currentTime,
mediaBuffer = this.mediaBuffer ? this.mediaBuffer : media,
buffered = mediaBuffer.buffered;
// adjust currentTime to start position on loaded metadata
if (!this.loadedmetadata && buffered.length) {
this.loadedmetadata = true;
// only adjust currentTime if different from startPosition or if startPosition not buffered
// at that stage, there should be only one buffered range, as we reach that code after first fragment has been buffered
var startPosition = media.seeking ? currentTime : this.startPosition,
startPositionBuffered = _bufferHelper2.default.isBuffered(mediaBuffer, startPosition);
// if currentTime not matching with expected startPosition or startPosition not buffered
if (currentTime !== startPosition || !startPositionBuffered) {
_logger.logger.log('target start position:' + startPosition);
// if startPosition not buffered, let's seek to buffered.start(0)
if (!startPositionBuffered) {
startPosition = buffered.start(0);
_logger.logger.log('target start position not buffered, seek to buffered.start(0) ' + startPosition);
}
_logger.logger.log('adjust currentTime from ' + currentTime + ' to ' + startPosition);
media.currentTime = startPosition;
}
} else if (this.immediateSwitch) {
this.immediateLevelSwitchEnd();
} else {
var bufferInfo = _bufferHelper2.default.bufferInfo(media, currentTime, 0),
expectedPlaying = !(media.paused || // not playing when media is paused
media.ended || // not playing when media is ended
media.buffered.length === 0),
// not playing if nothing buffered
jumpThreshold = 0.5,
// tolerance needed as some browsers stalls playback before reaching buffered range end
playheadMoving = currentTime !== this.lastCurrentTime,
config = this.config;
if (playheadMoving) {
// played moving, but was previously stalled => now not stuck anymore
if (this.stallReported) {
_logger.logger.warn('playback not stuck anymore @' + currentTime + ', after ' + Math.round(performance.now() - this.stalled) + 'ms');
this.stallReported = false;
}
this.stalled = undefined;
this.nudgeRetry = 0;
} else {
// playhead not moving
if (expectedPlaying) {
// playhead not moving BUT media expected to play
var tnow = performance.now();
var hls = this.hls;
if (!this.stalled) {
// stall just detected, store current time
this.stalled = tnow;
this.stallReported = false;
} else {
// playback already stalled, check stalling duration
// if stalling for more than a given threshold, let's try to recover
var stalledDuration = tnow - this.stalled;
var bufferLen = bufferInfo.len;
var nudgeRetry = this.nudgeRetry || 0;
// have we reached stall deadline ?
if (bufferLen <= jumpThreshold && stalledDuration > config.lowBufferWatchdogPeriod * 1000) {
// report stalled error once
if (!this.stallReported) {
this.stallReported = true;
_logger.logger.warn('playback stalling in low buffer @' + currentTime);
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_STALLED_ERROR, fatal: false, buffer: bufferLen });
}
// if buffer len is below threshold, try to jump to start of next buffer range if close
// no buffer available @ currentTime, check if next buffer is close (within a config.maxSeekHole second range)
var nextBufferStart = bufferInfo.nextStart,
delta = nextBufferStart - currentTime;
if (nextBufferStart && delta < config.maxSeekHole && delta > 0) {
this.nudgeRetry = ++nudgeRetry;
var nudgeOffset = nudgeRetry * config.nudgeOffset;
// next buffer is close ! adjust currentTime to nextBufferStart
// this will ensure effective video decoding
_logger.logger.log('adjust currentTime from ' + media.currentTime + ' to next buffered @ ' + nextBufferStart + ' + nudge ' + nudgeOffset);
media.currentTime = nextBufferStart + nudgeOffset;
// reset stalled so to rearm watchdog timer
this.stalled = undefined;
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_SEEK_OVER_HOLE, fatal: false, hole: nextBufferStart + nudgeOffset - currentTime });
}
} else if (bufferLen > jumpThreshold && stalledDuration > config.highBufferWatchdogPeriod * 1000) {
// report stalled error once
if (!this.stallReported) {
this.stallReported = true;
_logger.logger.warn('playback stalling in high buffer @' + currentTime);
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_STALLED_ERROR, fatal: false, buffer: bufferLen });
}
// reset stalled so to rearm watchdog timer
this.stalled = undefined;
this.nudgeRetry = ++nudgeRetry;
if (nudgeRetry < config.nudgeMaxRetry) {
var _currentTime = media.currentTime;
var targetTime = _currentTime + nudgeRetry * config.nudgeOffset;
_logger.logger.log('adjust currentTime from ' + _currentTime + ' to ' + targetTime);
// playback stalled in buffered area ... let's nudge currentTime to try to overcome this
media.currentTime = targetTime;
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_NUDGE_ON_STALL, fatal: false });
} else {
_logger.logger.error('still stuck in high buffer @' + currentTime + ' after ' + config.nudgeMaxRetry + ', raise fatal error');
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.BUFFER_STALLED_ERROR, fatal: true });
}
}
}
}
}
}
}
}
}, {
key: 'onFragLoadEmergencyAborted',
value: function onFragLoadEmergencyAborted() {
this.state = State.IDLE;
// if loadedmetadata is not set, it means that we are emergency switch down on first frag
// in that case, reset startFragRequested flag
if (!this.loadedmetadata) {
this.startFragRequested = false;
this.nextLoadPosition = this.startPosition;
}
this.tick();
}
}, {
key: 'onBufferFlushed',
value: function onBufferFlushed() {
/* after successful buffer flushing, filter flushed fragments from bufferedFrags
use mediaBuffered instead of media (so that we will check against video.buffered ranges in case of alt audio track)
*/
var media = this.mediaBuffer ? this.mediaBuffer : this.media;
this._bufferedFrags = this._bufferedFrags.filter(function (frag) {
return _bufferHelper2.default.isBuffered(media, (frag.startPTS + frag.endPTS) / 2);
});
// increase fragment load Index to avoid frag loop loading error after buffer flush
this.fragLoadIdx += 2 * this.config.fragLoadingLoopThreshold;
// move to IDLE once flush complete. this should trigger new fragment loading
this.state = State.IDLE;
// reset reference to frag
this.fragPrevious = null;
}
}, {
key: 'swapAudioCodec',
value: function swapAudioCodec() {
this.audioCodecSwap = !this.audioCodecSwap;
}
}, {
key: 'computeLivePosition',
value: function computeLivePosition(sliding, levelDetails) {
var targetLatency = this.config.liveSyncDuration !== undefined ? this.config.liveSyncDuration : this.config.liveSyncDurationCount * levelDetails.targetduration;
return sliding + Math.max(0, levelDetails.totalduration - targetLatency);
}
}, {
key: 'state',
set: function set(nextState) {
if (this.state !== nextState) {
var previousState = this.state;
this._state = nextState;
_logger.logger.log('main stream:' + previousState + '->' + nextState);
this.hls.trigger(_events2.default.STREAM_STATE_TRANSITION, { previousState: previousState, nextState: nextState });
}
},
get: function get() {
return this._state;
}
}, {
key: 'currentLevel',
get: function get() {
var media = this.media;
if (media) {
var frag = this.getBufferedFrag(media.currentTime);
if (frag) {
return frag.level;
}
}
return -1;
}
}, {
key: 'nextBufferedFrag',
get: function get() {
var media = this.media;
if (media) {
// first get end range of current fragment
return this.followingBufferedFrag(this.getBufferedFrag(media.currentTime));
} else {
return null;
}
}
}, {
key: 'nextLevel',
get: function get() {
var frag = this.nextBufferedFrag;
if (frag) {
return frag.level;
} else {
return -1;
}
}
}, {
key: 'liveSyncPosition',
get: function get() {
return this._liveSyncPosition;
},
set: function set(value) {
this._liveSyncPosition = value;
}
}]);
return StreamController;
}(_eventHandler2.default);
exports.default = StreamController;
},{"24":24,"30":30,"31":31,"32":32,"34":34,"35":35,"45":45,"50":50,"51":51}],13:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Subtitle Stream Controller
*/
var SubtitleStreamController = function (_EventHandler) {
_inherits(SubtitleStreamController, _EventHandler);
function SubtitleStreamController(hls) {
_classCallCheck(this, SubtitleStreamController);
var _this = _possibleConstructorReturn(this, (SubtitleStreamController.__proto__ || Object.getPrototypeOf(SubtitleStreamController)).call(this, hls, _events2.default.ERROR, _events2.default.SUBTITLE_TRACKS_UPDATED, _events2.default.SUBTITLE_TRACK_SWITCH, _events2.default.SUBTITLE_TRACK_LOADED, _events2.default.SUBTITLE_FRAG_PROCESSED));
_this.config = hls.config;
_this.vttFragSNsProcessed = {};
_this.vttFragQueues = undefined;
_this.currentlyProcessing = null;
_this.currentTrackId = -1;
return _this;
}
_createClass(SubtitleStreamController, [{
key: 'destroy',
value: function destroy() {
_eventHandler2.default.prototype.destroy.call(this);
}
// Remove all queued items and create a new, empty queue for each track.
}, {
key: 'clearVttFragQueues',
value: function clearVttFragQueues() {
var _this2 = this;
this.vttFragQueues = {};
this.tracks.forEach(function (track) {
_this2.vttFragQueues[track.id] = [];
});
}
// If no frag is being processed and queue isn't empty, initiate processing of next frag in line.
}, {
key: 'nextFrag',
value: function nextFrag() {
if (this.currentlyProcessing === null && this.currentTrackId > -1 && this.vttFragQueues[this.currentTrackId].length) {
var frag = this.currentlyProcessing = this.vttFragQueues[this.currentTrackId].shift();
this.hls.trigger(_events2.default.FRAG_LOADING, { frag: frag });
}
}
// When fragment has finished processing, add sn to list of completed if successful.
}, {
key: 'onSubtitleFragProcessed',
value: function onSubtitleFragProcessed(data) {
if (data.success) {
this.vttFragSNsProcessed[data.frag.trackId].push(data.frag.sn);
}
this.currentlyProcessing = null;
this.nextFrag();
}
// If something goes wrong, procede to next frag, if we were processing one.
}, {
key: 'onError',
value: function onError(data) {
var frag = data.frag;
// don't handle frag error not related to subtitle fragment
if (frag && frag.type !== 'subtitle') {
return;
}
if (this.currentlyProcessing) {
this.currentlyProcessing = null;
this.nextFrag();
}
}
// Got all new subtitle tracks.
}, {
key: 'onSubtitleTracksUpdated',
value: function onSubtitleTracksUpdated(data) {
var _this3 = this;
_logger.logger.log('subtitle tracks updated');
this.tracks = data.subtitleTracks;
this.clearVttFragQueues();
this.vttFragSNsProcessed = {};
this.tracks.forEach(function (track) {
_this3.vttFragSNsProcessed[track.id] = [];
});
}
}, {
key: 'onSubtitleTrackSwitch',
value: function onSubtitleTrackSwitch(data) {
this.currentTrackId = data.id;
this.clearVttFragQueues();
}
// Got a new set of subtitle fragments.
}, {
key: 'onSubtitleTrackLoaded',
value: function onSubtitleTrackLoaded(data) {
var processedFragSNs = this.vttFragSNsProcessed[data.id],
fragQueue = this.vttFragQueues[data.id],
currentFragSN = !!this.currentlyProcessing ? this.currentlyProcessing.sn : -1;
var alreadyProcessed = function alreadyProcessed(frag) {
return processedFragSNs.indexOf(frag.sn) > -1;
};
var alreadyInQueue = function alreadyInQueue(frag) {
return fragQueue.some(function (fragInQueue) {
return fragInQueue.sn === frag.sn;
});
};
// Add all fragments that haven't been, aren't currently being and aren't waiting to be processed, to queue.
data.details.fragments.forEach(function (frag) {
if (!(alreadyProcessed(frag) || frag.sn === currentFragSN || alreadyInQueue(frag))) {
// Frags don't know their subtitle track ID, so let's just add that...
frag.trackId = data.id;
fragQueue.push(frag);
}
});
this.nextFrag();
}
}]);
return SubtitleStreamController;
}(_eventHandler2.default);
exports.default = SubtitleStreamController;
},{"31":31,"32":32,"50":50}],14:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* audio track controller
*/
var SubtitleTrackController = function (_EventHandler) {
_inherits(SubtitleTrackController, _EventHandler);
function SubtitleTrackController(hls) {
_classCallCheck(this, SubtitleTrackController);
var _this = _possibleConstructorReturn(this, (SubtitleTrackController.__proto__ || Object.getPrototypeOf(SubtitleTrackController)).call(this, hls, _events2.default.MEDIA_ATTACHED, _events2.default.MEDIA_DETACHING, _events2.default.MANIFEST_LOADING, _events2.default.MANIFEST_LOADED, _events2.default.SUBTITLE_TRACK_LOADED));
_this.tracks = [];
_this.trackId = -1;
_this.media = undefined;
return _this;
}
_createClass(SubtitleTrackController, [{
key: 'destroy',
value: function destroy() {
_eventHandler2.default.prototype.destroy.call(this);
}
// Listen for subtitle track change, then extract the current track ID.
}, {
key: 'onMediaAttached',
value: function onMediaAttached(data) {
var _this2 = this;
this.media = data.media;
if (!this.media) {
return;
}
this.media.textTracks.addEventListener('change', function () {
// Media is undefined when switching streams via loadSource()
if (!_this2.media) {
return;
}
var trackId = -1;
var tracks = _this2.media.textTracks;
for (var id = 0; id < tracks.length; id++) {
if (tracks[id].mode === 'showing') {
trackId = id;
}
}
// Setting current subtitleTrack will invoke code.
_this2.subtitleTrack = trackId;
});
}
}, {
key: 'onMediaDetaching',
value: function onMediaDetaching() {
// TODO: Remove event listeners.
this.media = undefined;
}
// Reset subtitle tracks on manifest loading
}, {
key: 'onManifestLoading',
value: function onManifestLoading() {
this.tracks = [];
this.trackId = -1;
}
// Fired whenever a new manifest is loaded.
}, {
key: 'onManifestLoaded',
value: function onManifestLoaded(data) {
var _this3 = this;
var tracks = data.subtitles || [];
var defaultFound = false;
this.tracks = tracks;
this.trackId = -1;
this.hls.trigger(_events2.default.SUBTITLE_TRACKS_UPDATED, { subtitleTracks: tracks });
// loop through available subtitle tracks and autoselect default if needed
// TODO: improve selection logic to handle forced, etc
tracks.forEach(function (track) {
if (track.default) {
_this3.subtitleTrack = track.id;
defaultFound = true;
}
});
}
// Trigger subtitle track playlist reload.
}, {
key: 'onTick',
value: function onTick() {
var trackId = this.trackId;
var subtitleTrack = this.tracks[trackId];
if (!subtitleTrack) {
return;
}
var details = subtitleTrack.details;
// check if we need to load playlist for this subtitle Track
if (details === undefined || details.live === true) {
// track not retrieved yet, or live playlist we need to (re)load it
_logger.logger.log('(re)loading playlist for subtitle track ' + trackId);
this.hls.trigger(_events2.default.SUBTITLE_TRACK_LOADING, { url: subtitleTrack.url, id: trackId });
}
}
}, {
key: 'onSubtitleTrackLoaded',
value: function onSubtitleTrackLoaded(data) {
var _this4 = this;
if (data.id < this.tracks.length) {
_logger.logger.log('subtitle track ' + data.id + ' loaded');
this.tracks[data.id].details = data.details;
// check if current playlist is a live playlist
if (data.details.live && !this.timer) {
// if live playlist we will have to reload it periodically
// set reload period to playlist target duration
this.timer = setInterval(function () {
_this4.onTick();
}, 1000 * data.details.targetduration, this);
}
if (!data.details.live && this.timer) {
// playlist is not live and timer is armed : stopping it
clearInterval(this.timer);
this.timer = null;
}
}
}
/** get alternate subtitle tracks list from playlist **/
}, {
key: 'setSubtitleTrackInternal',
value: function setSubtitleTrackInternal(newId) {
// check if level idx is valid
if (newId >= 0 && newId < this.tracks.length) {
// stopping live reloading timer if any
if (this.timer) {
clearInterval(this.timer);
this.timer = null;
}
this.trackId = newId;
_logger.logger.log('switching to subtitle track ' + newId);
var subtitleTrack = this.tracks[newId];
this.hls.trigger(_events2.default.SUBTITLE_TRACK_SWITCH, { id: newId });
// check if we need to load playlist for this subtitle Track
var details = subtitleTrack.details;
if (details === undefined || details.live === true) {
// track not retrieved yet, or live playlist we need to (re)load it
_logger.logger.log('(re)loading playlist for subtitle track ' + newId);
this.hls.trigger(_events2.default.SUBTITLE_TRACK_LOADING, { url: subtitleTrack.url, id: newId });
}
}
}
}, {
key: 'subtitleTracks',
get: function get() {
return this.tracks;
}
/** get index of the selected subtitle track (index in subtitle track lists) **/
}, {
key: 'subtitleTrack',
get: function get() {
return this.trackId;
}
/** select a subtitle track, based on its index in subtitle track lists**/
,
set: function set(subtitleTrackId) {
if (this.trackId !== subtitleTrackId) {
// || this.tracks[subtitleTrackId].details === undefined) {
this.setSubtitleTrackInternal(subtitleTrackId);
}
}
}]);
return SubtitleTrackController;
}(_eventHandler2.default);
exports.default = SubtitleTrackController;
},{"31":31,"32":32,"50":50}],15:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _cea608Parser = _dereq_(46);
var _cea608Parser2 = _interopRequireDefault(_cea608Parser);
var _webvttParser = _dereq_(54);
var _webvttParser2 = _interopRequireDefault(_webvttParser);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Timeline Controller
*/
function clearCurrentCues(track) {
if (track && track.cues) {
while (track.cues.length > 0) {
track.removeCue(track.cues[0]);
}
}
}
function reuseVttTextTrack(inUseTrack, manifestTrack) {
return inUseTrack && inUseTrack.label === manifestTrack.name && !(inUseTrack.textTrack1 || inUseTrack.textTrack2);
}
function intersection(x1, x2, y1, y2) {
return Math.min(x2, y2) - Math.max(x1, y1);
}
var TimelineController = function (_EventHandler) {
_inherits(TimelineController, _EventHandler);
function TimelineController(hls) {
_classCallCheck(this, TimelineController);
var _this = _possibleConstructorReturn(this, (TimelineController.__proto__ || Object.getPrototypeOf(TimelineController)).call(this, hls, _events2.default.MEDIA_ATTACHING, _events2.default.MEDIA_DETACHING, _events2.default.FRAG_PARSING_USERDATA, _events2.default.MANIFEST_LOADING, _events2.default.MANIFEST_LOADED, _events2.default.FRAG_LOADED, _events2.default.LEVEL_SWITCHING, _events2.default.INIT_PTS_FOUND));
_this.hls = hls;
_this.config = hls.config;
_this.enabled = true;
_this.Cues = hls.config.cueHandler;
_this.textTracks = [];
_this.tracks = [];
_this.unparsedVttFrags = [];
_this.initPTS = undefined;
_this.cueRanges = [];
if (_this.config.enableCEA708Captions) {
var self = _this;
var sendAddTrackEvent = function sendAddTrackEvent(track, media) {
var e = null;
try {
e = new window.Event('addtrack');
} catch (err) {
//for IE11
e = document.createEvent('Event');
e.initEvent('addtrack', false, false);
}
e.track = track;
media.dispatchEvent(e);
};
var channel1 = {
'newCue': function newCue(startTime, endTime, screen) {
if (!self.textTrack1) {
//Enable reuse of existing text track.
var existingTrack1 = self.getExistingTrack('1');
if (!existingTrack1) {
var textTrack1 = self.createTextTrack('captions', self.config.captionsTextTrack1Label, self.config.captionsTextTrack1LanguageCode);
if (textTrack1) {
textTrack1.textTrack1 = true;
self.textTrack1 = textTrack1;
}
} else {
self.textTrack1 = existingTrack1;
clearCurrentCues(self.textTrack1);
sendAddTrackEvent(self.textTrack1, self.media);
}
}
self.addCues('textTrack1', startTime, endTime, screen);
}
};
var channel2 = {
'newCue': function newCue(startTime, endTime, screen) {
if (!self.textTrack2) {
//Enable reuse of existing text track.
var existingTrack2 = self.getExistingTrack('2');
if (!existingTrack2) {
var textTrack2 = self.createTextTrack('captions', self.config.captionsTextTrack2Label, self.config.captionsTextTrack1LanguageCode);
if (textTrack2) {
textTrack2.textTrack2 = true;
self.textTrack2 = textTrack2;
}
} else {
self.textTrack2 = existingTrack2;
clearCurrentCues(self.textTrack2);
sendAddTrackEvent(self.textTrack2, self.media);
}
}
self.addCues('textTrack2', startTime, endTime, screen);
}
};
_this.cea608Parser = new _cea608Parser2.default(0, channel1, channel2);
}
return _this;
}
_createClass(TimelineController, [{
key: 'addCues',
value: function addCues(channel, startTime, endTime, screen) {
// skip cues which overlap more than 50% with previously parsed time ranges
var ranges = this.cueRanges;
var merged = false;
for (var i = ranges.length; i--;) {
var cueRange = ranges[i];
var overlap = intersection(cueRange[0], cueRange[1], startTime, endTime);
if (overlap >= 0) {
cueRange[0] = Math.min(cueRange[0], startTime);
cueRange[1] = Math.max(cueRange[1], endTime);
merged = true;
if (overlap / (endTime - startTime) > 0.5) {
return;
}
}
}
if (!merged) {
ranges.push([startTime, endTime]);
}
this.Cues.newCue(this[channel], startTime, endTime, screen);
}
// Triggered when an initial PTS is found; used for synchronisation of WebVTT.
}, {
key: 'onInitPtsFound',
value: function onInitPtsFound(data) {
var _this2 = this;
if (typeof this.initPTS === 'undefined') {
this.initPTS = data.initPTS;
}
// Due to asynchrony, initial PTS may arrive later than the first VTT fragments are loaded.
// Parse any unparsed fragments upon receiving the initial PTS.
if (this.unparsedVttFrags.length) {
this.unparsedVttFrags.forEach(function (frag) {
_this2.onFragLoaded(frag);
});
this.unparsedVttFrags = [];
}
}
}, {
key: 'getExistingTrack',
value: function getExistingTrack(channelNumber) {
var media = this.media;
if (media) {
for (var i = 0; i < media.textTracks.length; i++) {
var textTrack = media.textTracks[i];
var propName = 'textTrack' + channelNumber;
if (textTrack[propName] === true) {
return textTrack;
}
}
}
return null;
}
}, {
key: 'createTextTrack',
value: function createTextTrack(kind, label, lang) {
var media = this.media;
if (media) {
return media.addTextTrack(kind, label, lang);
}
}
}, {
key: 'destroy',
value: function destroy() {
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onMediaAttaching',
value: function onMediaAttaching(data) {
this.media = data.media;
}
}, {
key: 'onMediaDetaching',
value: function onMediaDetaching() {
clearCurrentCues(this.textTrack1);
clearCurrentCues(this.textTrack2);
}
}, {
key: 'onManifestLoading',
value: function onManifestLoading() {
this.lastSn = -1; // Detect discontiguity in fragment parsing
this.prevCC = -1;
this.vttCCs = { ccOffset: 0, presentationOffset: 0 }; // Detect discontinuity in subtitle manifests
// clear outdated subtitles
var media = this.media;
if (media) {
var textTracks = media.textTracks;
if (textTracks) {
for (var i = 0; i < textTracks.length; i++) {
clearCurrentCues(textTracks[i]);
}
}
}
}
}, {
key: 'onManifestLoaded',
value: function onManifestLoaded(data) {
var _this3 = this;
this.textTracks = [];
this.unparsedVttFrags = this.unparsedVttFrags || [];
this.initPTS = undefined;
this.cueRanges = [];
if (this.config.enableWebVTT) {
this.tracks = data.subtitles || [];
var inUseTracks = this.media ? this.media.textTracks : [];
this.tracks.forEach(function (track, index) {
var textTrack = void 0;
if (index < inUseTracks.length) {
var inUseTrack = inUseTracks[index];
// Reuse tracks with the same label, but do not reuse 608/708 tracks
if (reuseVttTextTrack(inUseTrack, track)) {
textTrack = inUseTrack;
}
}
if (!textTrack) {
textTrack = _this3.createTextTrack('subtitles', track.name, track.lang);
}
textTrack.mode = track.default ? 'showing' : 'hidden';
_this3.textTracks.push(textTrack);
});
}
}
}, {
key: 'onLevelSwitching',
value: function onLevelSwitching() {
this.enabled = this.hls.currentLevel.closedCaptions !== 'NONE';
}
}, {
key: 'onFragLoaded',
value: function onFragLoaded(data) {
var frag = data.frag,
payload = data.payload;
if (frag.type === 'main') {
var sn = frag.sn;
// if this frag isn't contiguous, clear the parser so cues with bad start/end times aren't added to the textTrack
if (sn !== this.lastSn + 1) {
this.cea608Parser.reset();
}
this.lastSn = sn;
}
// If fragment is subtitle type, parse as WebVTT.
else if (frag.type === 'subtitle') {
if (payload.byteLength) {
// We need an initial synchronisation PTS. Store fragments as long as none has arrived.
if (typeof this.initPTS === 'undefined') {
this.unparsedVttFrags.push(data);
return;
}
var vttCCs = this.vttCCs;
if (!vttCCs[frag.cc]) {
vttCCs[frag.cc] = { start: frag.start, prevCC: this.prevCC, new: true };
this.prevCC = frag.cc;
}
var textTracks = this.textTracks,
hls = this.hls;
// Parse the WebVTT file contents.
_webvttParser2.default.parse(payload, this.initPTS, vttCCs, frag.cc, function (cues) {
// Add cues and trigger event with success true.
cues.forEach(function (cue) {
textTracks[frag.trackId].addCue(cue);
});
hls.trigger(_events2.default.SUBTITLE_FRAG_PROCESSED, { success: true, frag: frag });
}, function (e) {
// Something went wrong while parsing. Trigger event with success false.
_logger.logger.log('Failed to parse VTT cue: ' + e);
hls.trigger(_events2.default.SUBTITLE_FRAG_PROCESSED, { success: false, frag: frag });
});
} else {
// In case there is no payload, finish unsuccessfully.
this.hls.trigger(_events2.default.SUBTITLE_FRAG_PROCESSED, { success: false, frag: frag });
}
}
}
}, {
key: 'onFragParsingUserdata',
value: function onFragParsingUserdata(data) {
// push all of the CEA-708 messages into the interpreter
// immediately. It will create the proper timestamps based on our PTS value
if (this.enabled && this.config.enableCEA708Captions) {
for (var i = 0; i < data.samples.length; i++) {
var ccdatas = this.extractCea608Data(data.samples[i].bytes);
this.cea608Parser.addData(data.samples[i].pts, ccdatas);
}
}
}
}, {
key: 'extractCea608Data',
value: function extractCea608Data(byteArray) {
var count = byteArray[0] & 31;
var position = 2;
var tmpByte, ccbyte1, ccbyte2, ccValid, ccType;
var actualCCBytes = [];
for (var j = 0; j < count; j++) {
tmpByte = byteArray[position++];
ccbyte1 = 0x7F & byteArray[position++];
ccbyte2 = 0x7F & byteArray[position++];
ccValid = (4 & tmpByte) !== 0;
ccType = 3 & tmpByte;
if (ccbyte1 === 0 && ccbyte2 === 0) {
continue;
}
if (ccValid) {
if (ccType === 0) // || ccType === 1
{
actualCCBytes.push(ccbyte1);
actualCCBytes.push(ccbyte2);
}
}
}
return actualCCBytes;
}
}]);
return TimelineController;
}(_eventHandler2.default);
exports.default = TimelineController;
},{"31":31,"32":32,"46":46,"50":50,"54":54}],16:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var AESCrypto = function () {
function AESCrypto(subtle, iv) {
_classCallCheck(this, AESCrypto);
this.subtle = subtle;
this.aesIV = iv;
}
_createClass(AESCrypto, [{
key: 'decrypt',
value: function decrypt(data, key) {
return this.subtle.decrypt({ name: 'AES-CBC', iv: this.aesIV }, key, data);
}
}]);
return AESCrypto;
}();
exports.default = AESCrypto;
},{}],17:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var AESDecryptor = function () {
function AESDecryptor() {
_classCallCheck(this, AESDecryptor);
// Static after running initTable
this.rcon = [0x0, 0x1, 0x2, 0x4, 0x8, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36];
this.subMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
this.invSubMix = [new Uint32Array(256), new Uint32Array(256), new Uint32Array(256), new Uint32Array(256)];
this.sBox = new Uint32Array(256);
this.invSBox = new Uint32Array(256);
// Changes during runtime
this.key = new Uint32Array(0);
this.initTable();
}
// Using view.getUint32() also swaps the byte order.
_createClass(AESDecryptor, [{
key: 'uint8ArrayToUint32Array_',
value: function uint8ArrayToUint32Array_(arrayBuffer) {
var view = new DataView(arrayBuffer);
var newArray = new Uint32Array(4);
for (var i = 0; i < 4; i++) {
newArray[i] = view.getUint32(i * 4);
}
return newArray;
}
}, {
key: 'initTable',
value: function initTable() {
var sBox = this.sBox;
var invSBox = this.invSBox;
var subMix = this.subMix;
var subMix0 = subMix[0];
var subMix1 = subMix[1];
var subMix2 = subMix[2];
var subMix3 = subMix[3];
var invSubMix = this.invSubMix;
var invSubMix0 = invSubMix[0];
var invSubMix1 = invSubMix[1];
var invSubMix2 = invSubMix[2];
var invSubMix3 = invSubMix[3];
var d = new Uint32Array(256);
var x = 0;
var xi = 0;
var i = 0;
for (i = 0; i < 256; i++) {
if (i < 128) {
d[i] = i << 1;
} else {
d[i] = i << 1 ^ 0x11b;
}
}
for (i = 0; i < 256; i++) {
var sx = xi ^ xi << 1 ^ xi << 2 ^ xi << 3 ^ xi << 4;
sx = sx >>> 8 ^ sx & 0xff ^ 0x63;
sBox[x] = sx;
invSBox[sx] = x;
// Compute multiplication
var x2 = d[x];
var x4 = d[x2];
var x8 = d[x4];
// Compute sub/invSub bytes, mix columns tables
var t = d[sx] * 0x101 ^ sx * 0x1010100;
subMix0[x] = t << 24 | t >>> 8;
subMix1[x] = t << 16 | t >>> 16;
subMix2[x] = t << 8 | t >>> 24;
subMix3[x] = t;
// Compute inv sub bytes, inv mix columns tables
t = x8 * 0x1010101 ^ x4 * 0x10001 ^ x2 * 0x101 ^ x * 0x1010100;
invSubMix0[sx] = t << 24 | t >>> 8;
invSubMix1[sx] = t << 16 | t >>> 16;
invSubMix2[sx] = t << 8 | t >>> 24;
invSubMix3[sx] = t;
// Compute next counter
if (!x) {
x = xi = 1;
} else {
x = x2 ^ d[d[d[x8 ^ x2]]];
xi ^= d[d[xi]];
}
}
}
}, {
key: 'expandKey',
value: function expandKey(keyBuffer) {
// convert keyBuffer to Uint32Array
var key = this.uint8ArrayToUint32Array_(keyBuffer);
var sameKey = true;
var offset = 0;
while (offset < key.length && sameKey) {
sameKey = key[offset] === this.key[offset];
offset++;
}
if (sameKey) {
return;
}
this.key = key;
var keySize = this.keySize = key.length;
if (keySize !== 4 && keySize !== 6 && keySize !== 8) {
throw new Error('Invalid aes key size=' + keySize);
}
var ksRows = this.ksRows = (keySize + 6 + 1) * 4;
var ksRow = void 0;
var invKsRow = void 0;
var keySchedule = this.keySchedule = new Uint32Array(ksRows);
var invKeySchedule = this.invKeySchedule = new Uint32Array(ksRows);
var sbox = this.sBox;
var rcon = this.rcon;
var invSubMix = this.invSubMix;
var invSubMix0 = invSubMix[0];
var invSubMix1 = invSubMix[1];
var invSubMix2 = invSubMix[2];
var invSubMix3 = invSubMix[3];
var prev = void 0;
var t = void 0;
for (ksRow = 0; ksRow < ksRows; ksRow++) {
if (ksRow < keySize) {
prev = keySchedule[ksRow] = key[ksRow];
continue;
}
t = prev;
if (ksRow % keySize === 0) {
// Rot word
t = t << 8 | t >>> 24;
// Sub word
t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 0xff] << 16 | sbox[t >>> 8 & 0xff] << 8 | sbox[t & 0xff];
// Mix Rcon
t ^= rcon[ksRow / keySize | 0] << 24;
} else if (keySize > 6 && ksRow % keySize === 4) {
// Sub word
t = sbox[t >>> 24] << 24 | sbox[t >>> 16 & 0xff] << 16 | sbox[t >>> 8 & 0xff] << 8 | sbox[t & 0xff];
}
keySchedule[ksRow] = prev = (keySchedule[ksRow - keySize] ^ t) >>> 0;
}
for (invKsRow = 0; invKsRow < ksRows; invKsRow++) {
ksRow = ksRows - invKsRow;
if (invKsRow & 3) {
t = keySchedule[ksRow];
} else {
t = keySchedule[ksRow - 4];
}
if (invKsRow < 4 || ksRow <= 4) {
invKeySchedule[invKsRow] = t;
} else {
invKeySchedule[invKsRow] = invSubMix0[sbox[t >>> 24]] ^ invSubMix1[sbox[t >>> 16 & 0xff]] ^ invSubMix2[sbox[t >>> 8 & 0xff]] ^ invSubMix3[sbox[t & 0xff]];
}
invKeySchedule[invKsRow] = invKeySchedule[invKsRow] >>> 0;
}
}
// Adding this as a method greatly improves performance.
}, {
key: 'networkToHostOrderSwap',
value: function networkToHostOrderSwap(word) {
return word << 24 | (word & 0xff00) << 8 | (word & 0xff0000) >> 8 | word >>> 24;
}
}, {
key: 'decrypt',
value: function decrypt(inputArrayBuffer, offset, aesIV) {
var nRounds = this.keySize + 6;
var invKeySchedule = this.invKeySchedule;
var invSBOX = this.invSBox;
var invSubMix = this.invSubMix;
var invSubMix0 = invSubMix[0];
var invSubMix1 = invSubMix[1];
var invSubMix2 = invSubMix[2];
var invSubMix3 = invSubMix[3];
var initVector = this.uint8ArrayToUint32Array_(aesIV);
var initVector0 = initVector[0];
var initVector1 = initVector[1];
var initVector2 = initVector[2];
var initVector3 = initVector[3];
var inputInt32 = new Int32Array(inputArrayBuffer);
var outputInt32 = new Int32Array(inputInt32.length);
var t0 = void 0,
t1 = void 0,
t2 = void 0,
t3 = void 0;
var s0 = void 0,
s1 = void 0,
s2 = void 0,
s3 = void 0;
var inputWords0 = void 0,
inputWords1 = void 0,
inputWords2 = void 0,
inputWords3 = void 0;
var ksRow, i;
var swapWord = this.networkToHostOrderSwap;
while (offset < inputInt32.length) {
inputWords0 = swapWord(inputInt32[offset]);
inputWords1 = swapWord(inputInt32[offset + 1]);
inputWords2 = swapWord(inputInt32[offset + 2]);
inputWords3 = swapWord(inputInt32[offset + 3]);
s0 = inputWords0 ^ invKeySchedule[0];
s1 = inputWords3 ^ invKeySchedule[1];
s2 = inputWords2 ^ invKeySchedule[2];
s3 = inputWords1 ^ invKeySchedule[3];
ksRow = 4;
// Iterate through the rounds of decryption
for (i = 1; i < nRounds; i++) {
t0 = invSubMix0[s0 >>> 24] ^ invSubMix1[s1 >> 16 & 0xff] ^ invSubMix2[s2 >> 8 & 0xff] ^ invSubMix3[s3 & 0xff] ^ invKeySchedule[ksRow];
t1 = invSubMix0[s1 >>> 24] ^ invSubMix1[s2 >> 16 & 0xff] ^ invSubMix2[s3 >> 8 & 0xff] ^ invSubMix3[s0 & 0xff] ^ invKeySchedule[ksRow + 1];
t2 = invSubMix0[s2 >>> 24] ^ invSubMix1[s3 >> 16 & 0xff] ^ invSubMix2[s0 >> 8 & 0xff] ^ invSubMix3[s1 & 0xff] ^ invKeySchedule[ksRow + 2];
t3 = invSubMix0[s3 >>> 24] ^ invSubMix1[s0 >> 16 & 0xff] ^ invSubMix2[s1 >> 8 & 0xff] ^ invSubMix3[s2 & 0xff] ^ invKeySchedule[ksRow + 3];
// Update state
s0 = t0;
s1 = t1;
s2 = t2;
s3 = t3;
ksRow = ksRow + 4;
}
// Shift rows, sub bytes, add round key
t0 = invSBOX[s0 >>> 24] << 24 ^ invSBOX[s1 >> 16 & 0xff] << 16 ^ invSBOX[s2 >> 8 & 0xff] << 8 ^ invSBOX[s3 & 0xff] ^ invKeySchedule[ksRow];
t1 = invSBOX[s1 >>> 24] << 24 ^ invSBOX[s2 >> 16 & 0xff] << 16 ^ invSBOX[s3 >> 8 & 0xff] << 8 ^ invSBOX[s0 & 0xff] ^ invKeySchedule[ksRow + 1];
t2 = invSBOX[s2 >>> 24] << 24 ^ invSBOX[s3 >> 16 & 0xff] << 16 ^ invSBOX[s0 >> 8 & 0xff] << 8 ^ invSBOX[s1 & 0xff] ^ invKeySchedule[ksRow + 2];
t3 = invSBOX[s3 >>> 24] << 24 ^ invSBOX[s0 >> 16 & 0xff] << 16 ^ invSBOX[s1 >> 8 & 0xff] << 8 ^ invSBOX[s2 & 0xff] ^ invKeySchedule[ksRow + 3];
ksRow = ksRow + 3;
// Write
outputInt32[offset] = swapWord(t0 ^ initVector0);
outputInt32[offset + 1] = swapWord(t3 ^ initVector1);
outputInt32[offset + 2] = swapWord(t2 ^ initVector2);
outputInt32[offset + 3] = swapWord(t1 ^ initVector3);
// reset initVector to last 4 unsigned int
initVector0 = inputWords0;
initVector1 = inputWords1;
initVector2 = inputWords2;
initVector3 = inputWords3;
offset = offset + 4;
}
return outputInt32.buffer;
}
}, {
key: 'destroy',
value: function destroy() {
this.key = undefined;
this.keySize = undefined;
this.ksRows = undefined;
this.sBox = undefined;
this.invSBox = undefined;
this.subMix = undefined;
this.invSubMix = undefined;
this.keySchedule = undefined;
this.invKeySchedule = undefined;
this.rcon = undefined;
}
}]);
return AESDecryptor;
}();
exports.default = AESDecryptor;
},{}],18:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _aesCrypto = _dereq_(16);
var _aesCrypto2 = _interopRequireDefault(_aesCrypto);
var _fastAesKey = _dereq_(19);
var _fastAesKey2 = _interopRequireDefault(_fastAesKey);
var _aesDecryptor = _dereq_(17);
var _aesDecryptor2 = _interopRequireDefault(_aesDecryptor);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/*globals self: false */
var Decrypter = function () {
function Decrypter(observer, config) {
_classCallCheck(this, Decrypter);
this.observer = observer;
this.config = config;
this.logEnabled = true;
try {
var browserCrypto = crypto ? crypto : self.crypto;
this.subtle = browserCrypto.subtle || browserCrypto.webkitSubtle;
} catch (e) {}
this.disableWebCrypto = !this.subtle;
}
_createClass(Decrypter, [{
key: 'isSync',
value: function isSync() {
return this.disableWebCrypto && this.config.enableSoftwareAES;
}
}, {
key: 'decrypt',
value: function decrypt(data, key, iv, callback) {
var _this = this;
if (this.disableWebCrypto && this.config.enableSoftwareAES) {
if (this.logEnabled) {
_logger.logger.log('JS AES decrypt');
this.logEnabled = false;
}
var decryptor = this.decryptor;
if (!decryptor) {
this.decryptor = decryptor = new _aesDecryptor2.default();
}
decryptor.expandKey(key);
callback(decryptor.decrypt(data, 0, iv));
} else {
if (this.logEnabled) {
_logger.logger.log('WebCrypto AES decrypt');
this.logEnabled = false;
}
var subtle = this.subtle;
if (this.key !== key) {
this.key = key;
this.fastAesKey = new _fastAesKey2.default(subtle, key);
}
this.fastAesKey.expandKey().then(function (aesKey) {
// decrypt using web crypto
var crypto = new _aesCrypto2.default(subtle, iv);
crypto.decrypt(data, aesKey).catch(function (err) {
_this.onWebCryptoError(err, data, key, iv, callback);
}).then(function (result) {
callback(result);
});
}).catch(function (err) {
_this.onWebCryptoError(err, data, key, iv, callback);
});
}
}
}, {
key: 'onWebCryptoError',
value: function onWebCryptoError(err, data, key, iv, callback) {
if (this.config.enableSoftwareAES) {
_logger.logger.log('WebCrypto Error, disable WebCrypto API');
this.disableWebCrypto = true;
this.logEnabled = true;
this.decrypt(data, key, iv, callback);
} else {
_logger.logger.error('decrypting error : ' + err.message);
this.observer.trigger(Event.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_DECRYPT_ERROR, fatal: true, reason: err.message });
}
}
}, {
key: 'destroy',
value: function destroy() {
var decryptor = this.decryptor;
if (decryptor) {
decryptor.destroy();
this.decryptor = undefined;
}
}
}]);
return Decrypter;
}();
exports.default = Decrypter;
},{"16":16,"17":17,"19":19,"30":30,"50":50}],19:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var FastAESKey = function () {
function FastAESKey(subtle, key) {
_classCallCheck(this, FastAESKey);
this.subtle = subtle;
this.key = key;
}
_createClass(FastAESKey, [{
key: 'expandKey',
value: function expandKey() {
return this.subtle.importKey('raw', this.key, { name: 'AES-CBC' }, false, ['encrypt', 'decrypt']);
}
}]);
return FastAESKey;
}();
exports.default = FastAESKey;
},{}],20:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* AAC demuxer
*/
var _adts = _dereq_(21);
var _adts2 = _interopRequireDefault(_adts);
var _logger = _dereq_(50);
var _id = _dereq_(26);
var _id2 = _interopRequireDefault(_id);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var AACDemuxer = function () {
function AACDemuxer(observer, remuxer, config) {
_classCallCheck(this, AACDemuxer);
this.observer = observer;
this.config = config;
this.remuxer = remuxer;
}
_createClass(AACDemuxer, [{
key: 'resetInitSegment',
value: function resetInitSegment(initSegment, audioCodec, videoCodec, duration) {
this._aacTrack = { container: 'audio/adts', type: 'audio', id: -1, sequenceNumber: 0, isAAC: true, samples: [], len: 0, manifestCodec: audioCodec, duration: duration, inputTimeScale: 90000 };
}
}, {
key: 'resetTimeStamp',
value: function resetTimeStamp() {}
}, {
key: 'append',
// feed incoming data to the front of the parsing pipeline
value: function append(data, timeOffset, contiguous, accurateTimeOffset) {
var track,
id3 = new _id2.default(data),
pts = 90 * id3.timeStamp,
config,
frameLength,
frameDuration,
frameIndex,
offset,
headerLength,
stamp,
len,
aacSample;
track = this._aacTrack;
// look for ADTS header (0xFFFx)
for (offset = id3.length, len = data.length; offset < len - 1; offset++) {
if (data[offset] === 0xff && (data[offset + 1] & 0xf0) === 0xf0) {
break;
}
}
if (!track.samplerate) {
config = _adts2.default.getAudioConfig(this.observer, data, offset, track.manifestCodec);
track.config = config.config;
track.samplerate = config.samplerate;
track.channelCount = config.channelCount;
track.codec = config.codec;
_logger.logger.log('parsed codec:' + track.codec + ',rate:' + config.samplerate + ',nb channel:' + config.channelCount);
}
frameIndex = 0;
frameDuration = 1024 * 90000 / track.samplerate;
while (offset + 5 < len) {
// The protection skip bit tells us if we have 2 bytes of CRC data at the end of the ADTS header
headerLength = !!(data[offset + 1] & 0x01) ? 7 : 9;
// retrieve frame size
frameLength = (data[offset + 3] & 0x03) << 11 | data[offset + 4] << 3 | (data[offset + 5] & 0xE0) >>> 5;
frameLength -= headerLength;
//stamp = pes.pts;
if (frameLength > 0 && offset + headerLength + frameLength <= len) {
stamp = pts + frameIndex * frameDuration;
//logger.log(`AAC frame, offset/length/total/pts:${offset+headerLength}/${frameLength}/${data.byteLength}/${(stamp/90).toFixed(0)}`);
aacSample = { unit: data.subarray(offset + headerLength, offset + headerLength + frameLength), pts: stamp, dts: stamp };
track.samples.push(aacSample);
track.len += frameLength;
offset += frameLength + headerLength;
frameIndex++;
// look for ADTS header (0xFFFx)
for (; offset < len - 1; offset++) {
if (data[offset] === 0xff && (data[offset + 1] & 0xf0) === 0xf0) {
break;
}
}
} else {
break;
}
}
this.remuxer.remux(track, { samples: [] }, { samples: [{ pts: pts, dts: pts, unit: id3.payload }] }, { samples: [] }, timeOffset, contiguous, accurateTimeOffset);
}
}, {
key: 'destroy',
value: function destroy() {}
}], [{
key: 'probe',
value: function probe(data) {
// check if data contains ID3 timestamp and ADTS sync worc
var id3 = new _id2.default(data),
offset,
len;
if (id3.hasTimeStamp) {
// look for ADTS header (0xFFFx)
for (offset = id3.length, len = data.length; offset < len - 1; offset++) {
if (data[offset] === 0xff && (data[offset + 1] & 0xf0) === 0xf0) {
//logger.log('ADTS sync word found !');
return true;
}
}
}
return false;
}
}]);
return AACDemuxer;
}();
exports.default = AACDemuxer;
},{"21":21,"26":26,"50":50}],21:[function(_dereq_,module,exports){
'use strict';
var _logger = _dereq_(50);
var _errors = _dereq_(30);
/**
* ADTS parser helper
*/
var ADTS = {
getAudioConfig: function getAudioConfig(observer, data, offset, audioCodec) {
var adtsObjectType,
// :int
adtsSampleingIndex,
// :int
adtsExtensionSampleingIndex,
// :int
adtsChanelConfig,
// :int
config,
userAgent = navigator.userAgent.toLowerCase(),
manifestCodec = audioCodec,
adtsSampleingRates = [96000, 88200, 64000, 48000, 44100, 32000, 24000, 22050, 16000, 12000, 11025, 8000, 7350];
// byte 2
adtsObjectType = ((data[offset + 2] & 0xC0) >>> 6) + 1;
adtsSampleingIndex = (data[offset + 2] & 0x3C) >>> 2;
if (adtsSampleingIndex > adtsSampleingRates.length - 1) {
observer.trigger(Event.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_PARSING_ERROR, fatal: true, reason: 'invalid ADTS sampling index:' + adtsSampleingIndex });
return;
}
adtsChanelConfig = (data[offset + 2] & 0x01) << 2;
// byte 3
adtsChanelConfig |= (data[offset + 3] & 0xC0) >>> 6;
_logger.logger.log('manifest codec:' + audioCodec + ',ADTS data:type:' + adtsObjectType + ',sampleingIndex:' + adtsSampleingIndex + '[' + adtsSampleingRates[adtsSampleingIndex] + 'Hz],channelConfig:' + adtsChanelConfig);
// firefox: freq less than 24kHz = AAC SBR (HE-AAC)
if (/firefox/i.test(userAgent)) {
if (adtsSampleingIndex >= 6) {
adtsObjectType = 5;
config = new Array(4);
// HE-AAC uses SBR (Spectral Band Replication) , high frequencies are constructed from low frequencies
// there is a factor 2 between frame sample rate and output sample rate
// multiply frequency by 2 (see table below, equivalent to substract 3)
adtsExtensionSampleingIndex = adtsSampleingIndex - 3;
} else {
adtsObjectType = 2;
config = new Array(2);
adtsExtensionSampleingIndex = adtsSampleingIndex;
}
// Android : always use AAC
} else if (userAgent.indexOf('android') !== -1) {
adtsObjectType = 2;
config = new Array(2);
adtsExtensionSampleingIndex = adtsSampleingIndex;
} else {
/* for other browsers (Chrome/Vivaldi/Opera ...)
always force audio type to be HE-AAC SBR, as some browsers do not support audio codec switch properly (like Chrome ...)
*/
adtsObjectType = 5;
config = new Array(4);
// if (manifest codec is HE-AAC or HE-AACv2) OR (manifest codec not specified AND frequency less than 24kHz)
if (audioCodec && (audioCodec.indexOf('mp4a.40.29') !== -1 || audioCodec.indexOf('mp4a.40.5') !== -1) || !audioCodec && adtsSampleingIndex >= 6) {
// HE-AAC uses SBR (Spectral Band Replication) , high frequencies are constructed from low frequencies
// there is a factor 2 between frame sample rate and output sample rate
// multiply frequency by 2 (see table below, equivalent to substract 3)
adtsExtensionSampleingIndex = adtsSampleingIndex - 3;
} else {
// if (manifest codec is AAC) AND (frequency less than 24kHz AND nb channel is 1) OR (manifest codec not specified and mono audio)
// Chrome fails to play back with low frequency AAC LC mono when initialized with HE-AAC. This is not a problem with stereo.
if (audioCodec && audioCodec.indexOf('mp4a.40.2') !== -1 && adtsSampleingIndex >= 6 && adtsChanelConfig === 1 || !audioCodec && adtsChanelConfig === 1) {
adtsObjectType = 2;
config = new Array(2);
}
adtsExtensionSampleingIndex = adtsSampleingIndex;
}
}
/* refer to http://wiki.multimedia.cx/index.php?title=MPEG-4_Audio#Audio_Specific_Config
ISO 14496-3 (AAC).pdf - Table 1.13 — Syntax of AudioSpecificConfig()
Audio Profile / Audio Object Type
0: Null
1: AAC Main
2: AAC LC (Low Complexity)
3: AAC SSR (Scalable Sample Rate)
4: AAC LTP (Long Term Prediction)
5: SBR (Spectral Band Replication)
6: AAC Scalable
sampling freq
0: 96000 Hz
1: 88200 Hz
2: 64000 Hz
3: 48000 Hz
4: 44100 Hz
5: 32000 Hz
6: 24000 Hz
7: 22050 Hz
8: 16000 Hz
9: 12000 Hz
10: 11025 Hz
11: 8000 Hz
12: 7350 Hz
13: Reserved
14: Reserved
15: frequency is written explictly
Channel Configurations
These are the channel configurations:
0: Defined in AOT Specifc Config
1: 1 channel: front-center
2: 2 channels: front-left, front-right
*/
// audioObjectType = profile => profile, the MPEG-4 Audio Object Type minus 1
config[0] = adtsObjectType << 3;
// samplingFrequencyIndex
config[0] |= (adtsSampleingIndex & 0x0E) >> 1;
config[1] |= (adtsSampleingIndex & 0x01) << 7;
// channelConfiguration
config[1] |= adtsChanelConfig << 3;
if (adtsObjectType === 5) {
// adtsExtensionSampleingIndex
config[1] |= (adtsExtensionSampleingIndex & 0x0E) >> 1;
config[2] = (adtsExtensionSampleingIndex & 0x01) << 7;
// adtsObjectType (force to 2, chrome is checking that object type is less than 5 ???
// https://chromium.googlesource.com/chromium/src.git/+/master/media/formats/mp4/aac.cc
config[2] |= 2 << 2;
config[3] = 0;
}
return { config: config, samplerate: adtsSampleingRates[adtsSampleingIndex], channelCount: adtsChanelConfig, codec: 'mp4a.40.' + adtsObjectType, manifestCodec: manifestCodec };
}
};
module.exports = ADTS;
},{"30":30,"50":50}],22:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /* inline demuxer.
* probe fragments and instantiate appropriate demuxer depending on content type (TSDemuxer, AACDemuxer, ...)
*/
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _errors = _dereq_(30);
var _decrypter = _dereq_(18);
var _decrypter2 = _interopRequireDefault(_decrypter);
var _aacdemuxer = _dereq_(20);
var _aacdemuxer2 = _interopRequireDefault(_aacdemuxer);
var _mp4demuxer = _dereq_(27);
var _mp4demuxer2 = _interopRequireDefault(_mp4demuxer);
var _tsdemuxer = _dereq_(29);
var _tsdemuxer2 = _interopRequireDefault(_tsdemuxer);
var _mp4Remuxer = _dereq_(42);
var _mp4Remuxer2 = _interopRequireDefault(_mp4Remuxer);
var _passthroughRemuxer = _dereq_(43);
var _passthroughRemuxer2 = _interopRequireDefault(_passthroughRemuxer);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var DemuxerInline = function () {
function DemuxerInline(observer, typeSupported, config, vendor) {
_classCallCheck(this, DemuxerInline);
this.observer = observer;
this.typeSupported = typeSupported;
this.config = config;
this.vendor = vendor;
}
_createClass(DemuxerInline, [{
key: 'destroy',
value: function destroy() {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.destroy();
}
}
}, {
key: 'push',
value: function push(data, decryptdata, initSegment, audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS) {
if (data.byteLength > 0 && decryptdata != null && decryptdata.key != null && decryptdata.method === 'AES-128') {
var decrypter = this.decrypter;
if (decrypter == null) {
decrypter = this.decrypter = new _decrypter2.default(this.observer, this.config);
}
var localthis = this;
// performance.now() not available on WebWorker, at least on Safari Desktop
var startTime;
try {
startTime = performance.now();
} catch (error) {
startTime = Date.now();
}
decrypter.decrypt(data, decryptdata.key.buffer, decryptdata.iv.buffer, function (decryptedData) {
var endTime;
try {
endTime = performance.now();
} catch (error) {
endTime = Date.now();
}
localthis.observer.trigger(_events2.default.FRAG_DECRYPTED, { stats: { tstart: startTime, tdecrypt: endTime } });
localthis.pushDecrypted(new Uint8Array(decryptedData), decryptdata, new Uint8Array(initSegment), audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS);
});
} else {
this.pushDecrypted(new Uint8Array(data), decryptdata, new Uint8Array(initSegment), audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS);
}
}
}, {
key: 'pushDecrypted',
value: function pushDecrypted(data, decryptdata, initSegment, audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS) {
var demuxer = this.demuxer;
if (!demuxer ||
// in case of continuity change, we might switch from content type (AAC container to TS container for example)
// so let's check that current demuxer is still valid
discontinuity && !this.probe(data)) {
var observer = this.observer;
var typeSupported = this.typeSupported;
var config = this.config;
var muxConfig = [{ demux: _tsdemuxer2.default, remux: _mp4Remuxer2.default }, { demux: _aacdemuxer2.default, remux: _mp4Remuxer2.default }, { demux: _mp4demuxer2.default, remux: _passthroughRemuxer2.default }];
// probe for content type
for (var i in muxConfig) {
var mux = muxConfig[i];
var probe = mux.demux.probe;
if (probe(data)) {
var _remuxer = this.remuxer = new mux.remux(observer, config, typeSupported, this.vendor);
demuxer = new mux.demux(observer, _remuxer, config, typeSupported);
this.probe = probe;
break;
}
}
if (!demuxer) {
observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_PARSING_ERROR, fatal: true, reason: 'no demux matching with content found' });
return;
}
this.demuxer = demuxer;
}
var remuxer = this.remuxer;
if (discontinuity || trackSwitch) {
demuxer.resetInitSegment(initSegment, audioCodec, videoCodec, duration);
remuxer.resetInitSegment();
}
if (discontinuity) {
demuxer.resetTimeStamp();
remuxer.resetTimeStamp(defaultInitPTS);
}
if (typeof demuxer.setDecryptData === 'function') {
demuxer.setDecryptData(decryptdata);
}
demuxer.append(data, timeOffset, contiguous, accurateTimeOffset);
}
}]);
return DemuxerInline;
}();
exports.default = DemuxerInline;
},{"18":18,"20":20,"27":27,"29":29,"30":30,"32":32,"42":42,"43":43}],23:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _demuxerInline = _dereq_(22);
var _demuxerInline2 = _interopRequireDefault(_demuxerInline);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _logger = _dereq_(50);
var _events3 = _dereq_(1);
var _events4 = _interopRequireDefault(_events3);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
/* demuxer web worker.
* - listen to worker message, and trigger DemuxerInline upon reception of Fragments.
* - provides MP4 Boxes back to main thread using [transferable objects](https://developers.google.com/web/updates/2011/12/Transferable-Objects-Lightning-Fast) in order to minimize message passing overhead.
*/
var DemuxerWorker = function DemuxerWorker(self) {
// observer setup
var observer = new _events4.default();
observer.trigger = function trigger(event) {
for (var _len = arguments.length, data = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
data[_key - 1] = arguments[_key];
}
observer.emit.apply(observer, [event, event].concat(data));
};
observer.off = function off(event) {
for (var _len2 = arguments.length, data = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
data[_key2 - 1] = arguments[_key2];
}
observer.removeListener.apply(observer, [event].concat(data));
};
var forwardMessage = function forwardMessage(ev, data) {
self.postMessage({ event: ev, data: data });
};
self.addEventListener('message', function (ev) {
var data = ev.data;
//console.log('demuxer cmd:' + data.cmd);
switch (data.cmd) {
case 'init':
var config = JSON.parse(data.config);
self.demuxer = new _demuxerInline2.default(observer, data.typeSupported, config, data.vendor);
try {
(0, _logger.enableLogs)(config.debug === true);
} catch (err) {
console.warn('demuxerWorker: unable to enable logs');
}
// signal end of worker init
forwardMessage('init', null);
break;
case 'demux':
self.demuxer.push(data.data, data.decryptdata, data.initSegment, data.audioCodec, data.videoCodec, data.timeOffset, data.discontinuity, data.trackSwitch, data.contiguous, data.duration, data.accurateTimeOffset, data.defaultInitPTS);
break;
default:
break;
}
});
// forward events to main thread
observer.on(_events2.default.FRAG_DECRYPTED, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_INIT_SEGMENT, forwardMessage);
observer.on(_events2.default.FRAG_PARSED, forwardMessage);
observer.on(_events2.default.ERROR, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_METADATA, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_USERDATA, forwardMessage);
observer.on(_events2.default.INIT_PTS_FOUND, forwardMessage);
// special case for FRAG_PARSING_DATA: pass data1/data2 as transferable object (no copy)
observer.on(_events2.default.FRAG_PARSING_DATA, function (ev, data) {
var transferable = [];
var message = { event: ev, data: data };
if (data.data1) {
message.data1 = data.data1.buffer;
transferable.push(data.data1.buffer);
delete data.data1;
}
if (data.data2) {
message.data2 = data.data2.buffer;
transferable.push(data.data2.buffer);
delete data.data2;
}
self.postMessage(message, transferable);
});
};
exports.default = DemuxerWorker;
},{"1":1,"22":22,"32":32,"50":50}],24:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _demuxerInline = _dereq_(22);
var _demuxerInline2 = _interopRequireDefault(_demuxerInline);
var _demuxerWorker = _dereq_(23);
var _demuxerWorker2 = _interopRequireDefault(_demuxerWorker);
var _logger = _dereq_(50);
var _errors = _dereq_(30);
var _events3 = _dereq_(1);
var _events4 = _interopRequireDefault(_events3);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Demuxer = function () {
function Demuxer(hls, id) {
_classCallCheck(this, Demuxer);
this.hls = hls;
this.id = id;
// observer setup
var observer = this.observer = new _events4.default();
var config = hls.config;
observer.trigger = function trigger(event) {
for (var _len = arguments.length, data = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
data[_key - 1] = arguments[_key];
}
observer.emit.apply(observer, [event, event].concat(data));
};
observer.off = function off(event) {
for (var _len2 = arguments.length, data = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
data[_key2 - 1] = arguments[_key2];
}
observer.removeListener.apply(observer, [event].concat(data));
};
var forwardMessage = function (ev, data) {
data = data || {};
data.frag = this.frag;
data.id = this.id;
hls.trigger(ev, data);
}.bind(this);
// forward events to main thread
observer.on(_events2.default.FRAG_DECRYPTED, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_INIT_SEGMENT, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_DATA, forwardMessage);
observer.on(_events2.default.FRAG_PARSED, forwardMessage);
observer.on(_events2.default.ERROR, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_METADATA, forwardMessage);
observer.on(_events2.default.FRAG_PARSING_USERDATA, forwardMessage);
observer.on(_events2.default.INIT_PTS_FOUND, forwardMessage);
var typeSupported = {
mp4: MediaSource.isTypeSupported('video/mp4'),
mpeg: MediaSource.isTypeSupported('audio/mpeg'),
mp3: MediaSource.isTypeSupported('audio/mp4; codecs="mp3"')
};
// navigator.vendor is not always available in Web Worker
// refer to https://developer.mozilla.org/en-US/docs/Web/API/WorkerGlobalScope/navigator
var vendor = navigator.vendor;
if (config.enableWorker && typeof Worker !== 'undefined') {
_logger.logger.log('demuxing in webworker');
var w = void 0;
try {
var work = _dereq_(3);
w = this.w = work(_demuxerWorker2.default);
this.onwmsg = this.onWorkerMessage.bind(this);
w.addEventListener('message', this.onwmsg);
w.onerror = function (event) {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.OTHER_ERROR, details: _errors.ErrorDetails.INTERNAL_EXCEPTION, fatal: true, event: 'demuxerWorker', err: { message: event.message + ' (' + event.filename + ':' + event.lineno + ')' } });
};
w.postMessage({ cmd: 'init', typeSupported: typeSupported, vendor: vendor, id: id, config: JSON.stringify(config) });
} catch (err) {
_logger.logger.error('error while initializing DemuxerWorker, fallback on DemuxerInline');
if (w) {
// revoke the Object URL that was used to create demuxer worker, so as not to leak it
URL.revokeObjectURL(w.objectURL);
}
this.demuxer = new _demuxerInline2.default(observer, typeSupported, config, vendor);
this.w = undefined;
}
} else {
this.demuxer = new _demuxerInline2.default(observer, typeSupported, config, vendor);
}
}
_createClass(Demuxer, [{
key: 'destroy',
value: function destroy() {
var w = this.w;
if (w) {
w.removeEventListener('message', this.onwmsg);
w.terminate();
this.w = null;
} else {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.destroy();
this.demuxer = null;
}
}
var observer = this.observer;
if (observer) {
observer.removeAllListeners();
this.observer = null;
}
}
}, {
key: 'push',
value: function push(data, initSegment, audioCodec, videoCodec, frag, duration, accurateTimeOffset, defaultInitPTS) {
var w = this.w;
var timeOffset = !isNaN(frag.startDTS) ? frag.startDTS : frag.start;
var decryptdata = frag.decryptdata;
var lastFrag = this.frag;
var discontinuity = !(lastFrag && frag.cc === lastFrag.cc);
var trackSwitch = !(lastFrag && frag.level === lastFrag.level);
var nextSN = lastFrag && frag.sn === lastFrag.sn + 1;
var contiguous = !trackSwitch && nextSN;
if (discontinuity) {
_logger.logger.log(this.id + ':discontinuity detected');
}
if (trackSwitch) {
_logger.logger.log(this.id + ':switch detected');
}
this.frag = frag;
if (w) {
// post fragment payload as transferable objects (no copy)
w.postMessage({ cmd: 'demux', data: data, decryptdata: decryptdata, initSegment: initSegment, audioCodec: audioCodec, videoCodec: videoCodec, timeOffset: timeOffset, discontinuity: discontinuity, trackSwitch: trackSwitch, contiguous: contiguous, duration: duration, accurateTimeOffset: accurateTimeOffset, defaultInitPTS: defaultInitPTS }, [data]);
} else {
var demuxer = this.demuxer;
if (demuxer) {
demuxer.push(data, decryptdata, initSegment, audioCodec, videoCodec, timeOffset, discontinuity, trackSwitch, contiguous, duration, accurateTimeOffset, defaultInitPTS);
}
}
}
}, {
key: 'onWorkerMessage',
value: function onWorkerMessage(ev) {
var data = ev.data,
hls = this.hls;
//console.log('onWorkerMessage:' + data.event);
switch (data.event) {
case 'init':
// revoke the Object URL that was used to create demuxer worker, so as not to leak it
URL.revokeObjectURL(this.w.objectURL);
break;
// special case for FRAG_PARSING_DATA: data1 and data2 are transferable objects
case _events2.default.FRAG_PARSING_DATA:
data.data.data1 = new Uint8Array(data.data1);
if (data.data2) {
data.data.data2 = new Uint8Array(data.data2);
}
/* falls through */
default:
data.data = data.data || {};
data.data.frag = this.frag;
data.data.id = this.id;
hls.trigger(data.event, data.data);
break;
}
}
}]);
return Demuxer;
}();
exports.default = Demuxer;
},{"1":1,"22":22,"23":23,"3":3,"30":30,"32":32,"50":50}],25:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* Parser for exponential Golomb codes, a variable-bitwidth number encoding scheme used by h264.
*/
var _logger = _dereq_(50);
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var ExpGolomb = function () {
function ExpGolomb(data) {
_classCallCheck(this, ExpGolomb);
this.data = data;
// the number of bytes left to examine in this.data
this.bytesAvailable = data.byteLength;
// the current word being examined
this.word = 0; // :uint
// the number of bits left to examine in the current word
this.bitsAvailable = 0; // :uint
}
// ():void
_createClass(ExpGolomb, [{
key: 'loadWord',
value: function loadWord() {
var data = this.data,
bytesAvailable = this.bytesAvailable,
position = data.byteLength - bytesAvailable,
workingBytes = new Uint8Array(4),
availableBytes = Math.min(4, bytesAvailable);
if (availableBytes === 0) {
throw new Error('no bytes available');
}
workingBytes.set(data.subarray(position, position + availableBytes));
this.word = new DataView(workingBytes.buffer).getUint32(0);
// track the amount of this.data that has been processed
this.bitsAvailable = availableBytes * 8;
this.bytesAvailable -= availableBytes;
}
// (count:int):void
}, {
key: 'skipBits',
value: function skipBits(count) {
var skipBytes; // :int
if (this.bitsAvailable > count) {
this.word <<= count;
this.bitsAvailable -= count;
} else {
count -= this.bitsAvailable;
skipBytes = count >> 3;
count -= skipBytes >> 3;
this.bytesAvailable -= skipBytes;
this.loadWord();
this.word <<= count;
this.bitsAvailable -= count;
}
}
// (size:int):uint
}, {
key: 'readBits',
value: function readBits(size) {
var bits = Math.min(this.bitsAvailable, size),
// :uint
valu = this.word >>> 32 - bits; // :uint
if (size > 32) {
_logger.logger.error('Cannot read more than 32 bits at a time');
}
this.bitsAvailable -= bits;
if (this.bitsAvailable > 0) {
this.word <<= bits;
} else if (this.bytesAvailable > 0) {
this.loadWord();
}
bits = size - bits;
if (bits > 0 && this.bitsAvailable) {
return valu << bits | this.readBits(bits);
} else {
return valu;
}
}
// ():uint
}, {
key: 'skipLZ',
value: function skipLZ() {
var leadingZeroCount; // :uint
for (leadingZeroCount = 0; leadingZeroCount < this.bitsAvailable; ++leadingZeroCount) {
if (0 !== (this.word & 0x80000000 >>> leadingZeroCount)) {
// the first bit of working word is 1
this.word <<= leadingZeroCount;
this.bitsAvailable -= leadingZeroCount;
return leadingZeroCount;
}
}
// we exhausted word and still have not found a 1
this.loadWord();
return leadingZeroCount + this.skipLZ();
}
// ():void
}, {
key: 'skipUEG',
value: function skipUEG() {
this.skipBits(1 + this.skipLZ());
}
// ():void
}, {
key: 'skipEG',
value: function skipEG() {
this.skipBits(1 + this.skipLZ());
}
// ():uint
}, {
key: 'readUEG',
value: function readUEG() {
var clz = this.skipLZ(); // :uint
return this.readBits(clz + 1) - 1;
}
// ():int
}, {
key: 'readEG',
value: function readEG() {
var valu = this.readUEG(); // :int
if (0x01 & valu) {
// the number is odd if the low order bit is set
return 1 + valu >>> 1; // add 1 to make it even, and divide by 2
} else {
return -1 * (valu >>> 1); // divide by two then make it negative
}
}
// Some convenience functions
// :Boolean
}, {
key: 'readBoolean',
value: function readBoolean() {
return 1 === this.readBits(1);
}
// ():int
}, {
key: 'readUByte',
value: function readUByte() {
return this.readBits(8);
}
// ():int
}, {
key: 'readUShort',
value: function readUShort() {
return this.readBits(16);
}
// ():int
}, {
key: 'readUInt',
value: function readUInt() {
return this.readBits(32);
}
/**
* Advance the ExpGolomb decoder past a scaling list. The scaling
* list is optionally transmitted as part of a sequence parameter
* set and is not relevant to transmuxing.
* @param count {number} the number of entries in this scaling list
* @see Recommendation ITU-T H.264, Section 7.3.2.1.1.1
*/
}, {
key: 'skipScalingList',
value: function skipScalingList(count) {
var lastScale = 8,
nextScale = 8,
j,
deltaScale;
for (j = 0; j < count; j++) {
if (nextScale !== 0) {
deltaScale = this.readEG();
nextScale = (lastScale + deltaScale + 256) % 256;
}
lastScale = nextScale === 0 ? lastScale : nextScale;
}
}
/**
* Read a sequence parameter set and return some interesting video
* properties. A sequence parameter set is the H264 metadata that
* describes the properties of upcoming video frames.
* @param data {Uint8Array} the bytes of a sequence parameter set
* @return {object} an object with configuration parsed from the
* sequence parameter set, including the dimensions of the
* associated video frames.
*/
}, {
key: 'readSPS',
value: function readSPS() {
var frameCropLeftOffset = 0,
frameCropRightOffset = 0,
frameCropTopOffset = 0,
frameCropBottomOffset = 0,
profileIdc,
profileCompat,
levelIdc,
numRefFramesInPicOrderCntCycle,
picWidthInMbsMinus1,
picHeightInMapUnitsMinus1,
frameMbsOnlyFlag,
scalingListCount,
i,
readUByte = this.readUByte.bind(this),
readBits = this.readBits.bind(this),
readUEG = this.readUEG.bind(this),
readBoolean = this.readBoolean.bind(this),
skipBits = this.skipBits.bind(this),
skipEG = this.skipEG.bind(this),
skipUEG = this.skipUEG.bind(this),
skipScalingList = this.skipScalingList.bind(this);
readUByte();
profileIdc = readUByte(); // profile_idc
profileCompat = readBits(5); // constraint_set[0-4]_flag, u(5)
skipBits(3); // reserved_zero_3bits u(3),
levelIdc = readUByte(); //level_idc u(8)
skipUEG(); // seq_parameter_set_id
// some profiles have more optional data we don't need
if (profileIdc === 100 || profileIdc === 110 || profileIdc === 122 || profileIdc === 244 || profileIdc === 44 || profileIdc === 83 || profileIdc === 86 || profileIdc === 118 || profileIdc === 128) {
var chromaFormatIdc = readUEG();
if (chromaFormatIdc === 3) {
skipBits(1); // separate_colour_plane_flag
}
skipUEG(); // bit_depth_luma_minus8
skipUEG(); // bit_depth_chroma_minus8
skipBits(1); // qpprime_y_zero_transform_bypass_flag
if (readBoolean()) {
// seq_scaling_matrix_present_flag
scalingListCount = chromaFormatIdc !== 3 ? 8 : 12;
for (i = 0; i < scalingListCount; i++) {
if (readBoolean()) {
// seq_scaling_list_present_flag[ i ]
if (i < 6) {
skipScalingList(16);
} else {
skipScalingList(64);
}
}
}
}
}
skipUEG(); // log2_max_frame_num_minus4
var picOrderCntType = readUEG();
if (picOrderCntType === 0) {
readUEG(); //log2_max_pic_order_cnt_lsb_minus4
} else if (picOrderCntType === 1) {
skipBits(1); // delta_pic_order_always_zero_flag
skipEG(); // offset_for_non_ref_pic
skipEG(); // offset_for_top_to_bottom_field
numRefFramesInPicOrderCntCycle = readUEG();
for (i = 0; i < numRefFramesInPicOrderCntCycle; i++) {
skipEG(); // offset_for_ref_frame[ i ]
}
}
skipUEG(); // max_num_ref_frames
skipBits(1); // gaps_in_frame_num_value_allowed_flag
picWidthInMbsMinus1 = readUEG();
picHeightInMapUnitsMinus1 = readUEG();
frameMbsOnlyFlag = readBits(1);
if (frameMbsOnlyFlag === 0) {
skipBits(1); // mb_adaptive_frame_field_flag
}
skipBits(1); // direct_8x8_inference_flag
if (readBoolean()) {
// frame_cropping_flag
frameCropLeftOffset = readUEG();
frameCropRightOffset = readUEG();
frameCropTopOffset = readUEG();
frameCropBottomOffset = readUEG();
}
var pixelRatio = [1, 1];
if (readBoolean()) {
// vui_parameters_present_flag
if (readBoolean()) {
// aspect_ratio_info_present_flag
var aspectRatioIdc = readUByte();
switch (aspectRatioIdc) {
case 1:
pixelRatio = [1, 1];break;
case 2:
pixelRatio = [12, 11];break;
case 3:
pixelRatio = [10, 11];break;
case 4:
pixelRatio = [16, 11];break;
case 5:
pixelRatio = [40, 33];break;
case 6:
pixelRatio = [24, 11];break;
case 7:
pixelRatio = [20, 11];break;
case 8:
pixelRatio = [32, 11];break;
case 9:
pixelRatio = [80, 33];break;
case 10:
pixelRatio = [18, 11];break;
case 11:
pixelRatio = [15, 11];break;
case 12:
pixelRatio = [64, 33];break;
case 13:
pixelRatio = [160, 99];break;
case 14:
pixelRatio = [4, 3];break;
case 15:
pixelRatio = [3, 2];break;
case 16:
pixelRatio = [2, 1];break;
case 255:
{
pixelRatio = [readUByte() << 8 | readUByte(), readUByte() << 8 | readUByte()];
break;
}
}
}
}
return {
width: Math.ceil((picWidthInMbsMinus1 + 1) * 16 - frameCropLeftOffset * 2 - frameCropRightOffset * 2),
height: (2 - frameMbsOnlyFlag) * (picHeightInMapUnitsMinus1 + 1) * 16 - (frameMbsOnlyFlag ? 2 : 4) * (frameCropTopOffset + frameCropBottomOffset),
pixelRatio: pixelRatio
};
}
}, {
key: 'readSliceType',
value: function readSliceType() {
// skip NALu type
this.readUByte();
// discard first_mb_in_slice
this.readUEG();
// return slice_type
return this.readUEG();
}
}]);
return ExpGolomb;
}();
exports.default = ExpGolomb;
},{"50":50}],26:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* ID3 parser
*/
var _logger = _dereq_(50);
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
//import Hex from '../utils/hex';
var ID3 = function () {
function ID3(data) {
_classCallCheck(this, ID3);
this._hasTimeStamp = false;
var offset = 0,
byte1,
byte2,
byte3,
byte4,
tagSize,
endPos,
header,
len;
do {
header = this.readUTF(data, offset, 3);
offset += 3;
// first check for ID3 header
if (header === 'ID3') {
// skip 24 bits
offset += 3;
// retrieve tag(s) length
byte1 = data[offset++] & 0x7f;
byte2 = data[offset++] & 0x7f;
byte3 = data[offset++] & 0x7f;
byte4 = data[offset++] & 0x7f;
tagSize = (byte1 << 21) + (byte2 << 14) + (byte3 << 7) + byte4;
endPos = offset + tagSize;
//logger.log(`ID3 tag found, size/end: ${tagSize}/${endPos}`);
// read ID3 tags
this._parseID3Frames(data, offset, endPos);
offset = endPos;
} else if (header === '3DI') {
// http://id3.org/id3v2.4.0-structure chapter 3.4. ID3v2 footer
offset += 7;
_logger.logger.log('3DI footer found, end: ' + offset);
} else {
offset -= 3;
len = offset;
if (len) {
//logger.log(`ID3 len: ${len}`);
if (!this.hasTimeStamp) {
_logger.logger.warn('ID3 tag found, but no timestamp');
}
this._length = len;
this._payload = data.subarray(0, len);
}
return;
}
} while (true);
}
_createClass(ID3, [{
key: 'readUTF',
value: function readUTF(data, start, len) {
var result = '',
offset = start,
end = start + len;
do {
result += String.fromCharCode(data[offset++]);
} while (offset < end);
return result;
}
}, {
key: '_parseID3Frames',
value: function _parseID3Frames(data, offset, endPos) {
var tagId, tagLen, tagStart, tagFlags, timestamp;
while (offset + 8 <= endPos) {
tagId = this.readUTF(data, offset, 4);
offset += 4;
tagLen = data[offset++] << 24 + data[offset++] << 16 + data[offset++] << 8 + data[offset++];
tagFlags = data[offset++] << 8 + data[offset++];
tagStart = offset;
//logger.log("ID3 tag id:" + tagId);
switch (tagId) {
case 'PRIV':
//logger.log('parse frame:' + Hex.hexDump(data.subarray(offset,endPos)));
// owner should be "com.apple.streaming.transportStreamTimestamp"
if (this.readUTF(data, offset, 44) === 'com.apple.streaming.transportStreamTimestamp') {
offset += 44;
// smelling even better ! we found the right descriptor
// skip null character (string end) + 3 first bytes
offset += 4;
// timestamp is 33 bit expressed as a big-endian eight-octet number, with the upper 31 bits set to zero.
var pts33Bit = data[offset++] & 0x1;
this._hasTimeStamp = true;
timestamp = ((data[offset++] << 23) + (data[offset++] << 15) + (data[offset++] << 7) + data[offset++]) / 45;
if (pts33Bit) {
timestamp += 47721858.84; // 2^32 / 90
}
timestamp = Math.round(timestamp);
_logger.logger.trace('ID3 timestamp found: ' + timestamp);
this._timeStamp = timestamp;
}
break;
default:
break;
}
}
}
}, {
key: 'hasTimeStamp',
get: function get() {
return this._hasTimeStamp;
}
}, {
key: 'timeStamp',
get: function get() {
return this._timeStamp;
}
}, {
key: 'length',
get: function get() {
return this._length;
}
}, {
key: 'payload',
get: function get() {
return this._payload;
}
}]);
return ID3;
}();
exports.default = ID3;
},{"50":50}],27:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* MP4 demuxer
*/
//import {logger} from '../utils/logger';
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var MP4Demuxer = function () {
function MP4Demuxer(observer, remuxer) {
_classCallCheck(this, MP4Demuxer);
this.observer = observer;
this.remuxer = remuxer;
}
_createClass(MP4Demuxer, [{
key: 'resetTimeStamp',
value: function resetTimeStamp() {}
}, {
key: 'resetInitSegment',
value: function resetInitSegment(initSegment, audioCodec, videoCodec, duration) {
//jshint unused:false
var initData = this.initData = MP4Demuxer.parseInitSegment(initSegment);
var tracks = {};
if (initData.audio) {
tracks.audio = { container: 'audio/mp4', codec: audioCodec, initSegment: initSegment };
}
if (initData.video) {
tracks.video = { container: 'video/mp4', codec: videoCodec, initSegment: initSegment };
}
this.observer.trigger(_events2.default.FRAG_PARSING_INIT_SEGMENT, { tracks: tracks });
}
}, {
key: 'append',
// feed incoming data to the front of the parsing pipeline
value: function append(data, timeOffset, contiguous, accurateTimeOffset) {
var initData = this.initData;
var startDTS = MP4Demuxer.startDTS(initData, data);
this.remuxer.remux(initData.audio, initData.video, null, null, startDTS, contiguous, accurateTimeOffset, data);
}
}, {
key: 'destroy',
value: function destroy() {}
}], [{
key: 'probe',
value: function probe(data) {
if (data.length >= 8) {
var dataType = MP4Demuxer.bin2str(data.subarray(4, 8));
return ['moof', 'ftyp', 'styp'].indexOf(dataType) >= 0;
}
return false;
}
}, {
key: 'bin2str',
value: function bin2str(buffer) {
return String.fromCharCode.apply(null, buffer);
}
// Find the data for a box specified by its path
}, {
key: 'findBox',
value: function findBox(data, path) {
var results = [],
i,
size,
type,
end,
subresults;
if (!path.length) {
// short-circuit the search for empty paths
return null;
}
for (i = 0; i < data.byteLength;) {
size = data[i] << 24;
size |= data[i + 1] << 16;
size |= data[i + 2] << 8;
size |= data[i + 3];
type = MP4Demuxer.bin2str(data.subarray(i + 4, i + 8));
end = size > 1 ? i + size : data.byteLength;
if (type === path[0]) {
if (path.length === 1) {
// this is the end of the path and we've found the box we were
// looking for
results.push(data.subarray(i + 8, end));
} else {
// recursively search for the next box along the path
subresults = MP4Demuxer.findBox(data.subarray(i + 8, end), path.slice(1));
if (subresults.length) {
results = results.concat(subresults);
}
}
}
i = end;
}
// we've finished searching all of data
return results;
}
/**
* Parses an MP4 initialization segment and extracts stream type and
* 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
* moov > trak > mdia > hdlr
* ```
* @param init {Uint8Array} the bytes of the init segment
* @return {object} a hash of track type to timescale values or null if
* the init segment is malformed.
*/
}, {
key: 'parseInitSegment',
value: function parseInitSegment(initSegment) {
var result = [];
var traks = MP4Demuxer.findBox(initSegment, ['moov', 'trak']);
traks.forEach(function (trak) {
var tkhd = MP4Demuxer.findBox(trak, ['tkhd'])[0];
if (tkhd) {
var version = tkhd[0];
var index = version === 0 ? 12 : 20;
var trackId = tkhd[index] << 24 | tkhd[index + 1] << 16 | tkhd[index + 2] << 8 | tkhd[index + 3];
trackId = trackId < 0 ? 4294967296 + trackId : trackId;
var mdhd = MP4Demuxer.findBox(trak, ['mdia', 'mdhd'])[0];
if (mdhd) {
version = mdhd[0];
index = version === 0 ? 12 : 20;
var timescale = mdhd[index] << 24 | mdhd[index + 1] << 16 | mdhd[index + 2] << 8 | mdhd[index + 3];
var hdlr = MP4Demuxer.findBox(trak, ['mdia', 'hdlr'])[0];
if (hdlr) {
var hdlrType = MP4Demuxer.bin2str(hdlr.subarray(8, 12));
var type = { 'soun': 'audio', 'vide': 'video' }[hdlrType];
if (type) {
result[trackId] = { timescale: timescale, type: type };
result[type] = { timescale: timescale, id: trackId };
}
}
}
}
});
return 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
*/
}, {
key: 'startDTS',
value: function startDTS(initData, fragment) {
var trafs, baseTimes, result;
// we need info from two childrend of each track fragment box
trafs = MP4Demuxer.findBox(fragment, ['moof', 'traf']);
// determine the start times for each track
baseTimes = [].concat.apply([], trafs.map(function (traf) {
return MP4Demuxer.findBox(traf, ['tfhd']).map(function (tfhd) {
var id, scale, baseTime;
// get the track id from the tfhd
id = tfhd[4] << 24 | tfhd[5] << 16 | tfhd[6] << 8 | tfhd[7];
// assume a 90kHz clock if no timescale was specified
scale = initData[id].timescale || 90e3;
// get the base media decode time from the tfdt
baseTime = MP4Demuxer.findBox(traf, ['tfdt']).map(function (tfdt) {
var version, result;
version = tfdt[0];
result = tfdt[4] << 24 | tfdt[5] << 16 | tfdt[6] << 8 | tfdt[7];
if (version === 1) {
result *= Math.pow(2, 32);
result += tfdt[8] << 24 | tfdt[9] << 16 | tfdt[10] << 8 | tfdt[11];
}
return result;
})[0];
baseTime = baseTime || Infinity;
// convert base time to seconds
return baseTime / scale;
});
}));
// return the minimum
result = Math.min.apply(null, baseTimes);
return isFinite(result) ? result : 0;
}
}]);
return MP4Demuxer;
}();
exports.default = MP4Demuxer;
},{"32":32}],28:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* SAMPLE-AES decrypter
*/
var _decrypter = _dereq_(18);
var _decrypter2 = _interopRequireDefault(_decrypter);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var SampleAesDecrypter = function () {
function SampleAesDecrypter(observer, config, decryptdata, discardEPB) {
_classCallCheck(this, SampleAesDecrypter);
this.decryptdata = decryptdata;
this.discardEPB = discardEPB;
this.decrypter = new _decrypter2.default(observer, config);
}
_createClass(SampleAesDecrypter, [{
key: 'decryptBuffer',
value: function decryptBuffer(encryptedData, callback) {
this.decrypter.decrypt(encryptedData, this.decryptdata.key.buffer, this.decryptdata.iv.buffer, callback);
}
// AAC - encrypt all full 16 bytes blocks starting from offset 16
}, {
key: 'decryptAacSample',
value: function decryptAacSample(samples, sampleIndex, callback, sync) {
var curUnit = samples[sampleIndex].unit;
var encryptedData = curUnit.subarray(16, curUnit.length - curUnit.length % 16);
var encryptedBuffer = encryptedData.buffer.slice(encryptedData.byteOffset, encryptedData.byteOffset + encryptedData.length);
var localthis = this;
this.decryptBuffer(encryptedBuffer, function (decryptedData) {
decryptedData = new Uint8Array(decryptedData);
curUnit.set(decryptedData, 16);
if (!sync) {
localthis.decryptAacSamples(samples, sampleIndex + 1, callback);
}
});
}
}, {
key: 'decryptAacSamples',
value: function decryptAacSamples(samples, sampleIndex, callback) {
for (;; sampleIndex++) {
if (sampleIndex >= samples.length) {
callback();
return;
}
if (samples[sampleIndex].unit.length < 32) {
continue;
}
var sync = this.decrypter.isSync();
this.decryptAacSample(samples, sampleIndex, callback, sync);
if (!sync) {
return;
}
}
}
// AVC - encrypt one 16 bytes block out of ten, starting from offset 32
}, {
key: 'getAvcEncryptedData',
value: function getAvcEncryptedData(decodedData) {
var encryptedDataLen = Math.floor((decodedData.length - 48) / 160) * 16 + 16;
var encryptedData = new Int8Array(encryptedDataLen);
var outputPos = 0;
for (var inputPos = 32; inputPos <= decodedData.length - 16; inputPos += 160, outputPos += 16) {
encryptedData.set(decodedData.subarray(inputPos, inputPos + 16), outputPos);
}
return encryptedData;
}
}, {
key: 'getAvcDecryptedUnit',
value: function getAvcDecryptedUnit(decodedData, decryptedData) {
decryptedData = new Uint8Array(decryptedData);
var inputPos = 0;
for (var outputPos = 32; outputPos <= decodedData.length - 16; outputPos += 160, inputPos += 16) {
decodedData.set(decryptedData.subarray(inputPos, inputPos + 16), outputPos);
}
return decodedData;
}
}, {
key: 'decryptAvcSample',
value: function decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit, sync) {
var decodedData = this.discardEPB(curUnit.data);
var encryptedData = this.getAvcEncryptedData(decodedData);
var localthis = this;
this.decryptBuffer(encryptedData.buffer, function (decryptedData) {
curUnit.data = localthis.getAvcDecryptedUnit(decodedData, decryptedData);
if (!sync) {
localthis.decryptAvcSamples(samples, sampleIndex, unitIndex + 1, callback);
}
});
}
}, {
key: 'decryptAvcSamples',
value: function decryptAvcSamples(samples, sampleIndex, unitIndex, callback) {
for (;; sampleIndex++, unitIndex = 0) {
if (sampleIndex >= samples.length) {
callback();
return;
}
var curUnits = samples[sampleIndex].units;
for (;; unitIndex++) {
if (unitIndex >= curUnits.length) {
break;
}
var curUnit = curUnits[unitIndex];
if (curUnit.length <= 48 || curUnit.type !== 1 && curUnit.type !== 5) {
continue;
}
var sync = this.decrypter.isSync();
this.decryptAvcSample(samples, sampleIndex, unitIndex, callback, curUnit, sync);
if (!sync) {
return;
}
}
}
}
}]);
return SampleAesDecrypter;
}();
exports.default = SampleAesDecrypter;
},{"18":18}],29:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* highly optimized TS demuxer:
* parse PAT, PMT
* extract PES packet from audio and video PIDs
* extract AVC/H264 NAL units and AAC/ADTS samples from PES packet
* trigger the remuxer upon parsing completion
* it also tries to workaround as best as it can audio codec switch (HE-AAC to AAC and vice versa), without having to restart the MediaSource.
* it also controls the remuxing process :
* upon discontinuity or level switch detection, it will also notifies the remuxer so that it can reset its state.
*/
// import Hex from '../utils/hex';
var _adts = _dereq_(21);
var _adts2 = _interopRequireDefault(_adts);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _expGolomb = _dereq_(25);
var _expGolomb2 = _interopRequireDefault(_expGolomb);
var _sampleAes = _dereq_(28);
var _sampleAes2 = _interopRequireDefault(_sampleAes);
var _logger = _dereq_(50);
var _errors = _dereq_(30);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var TSDemuxer = function () {
function TSDemuxer(observer, remuxer, config, typeSupported) {
_classCallCheck(this, TSDemuxer);
this.observer = observer;
this.config = config;
this.typeSupported = typeSupported;
this.remuxer = remuxer;
this.sampleAes = null;
}
_createClass(TSDemuxer, [{
key: 'setDecryptData',
value: function setDecryptData(decryptdata) {
if (decryptdata != null && decryptdata.key != null && decryptdata.method === 'SAMPLE-AES') {
this.sampleAes = new _sampleAes2.default(this.observer, this.config, decryptdata, this.discardEPB);
} else {
this.sampleAes = null;
}
}
}, {
key: 'resetInitSegment',
value: function resetInitSegment(initSegment, audioCodec, videoCodec, duration) {
this.pmtParsed = false;
this._pmtId = -1;
this._avcTrack = { container: 'video/mp2t', type: 'video', id: -1, inputTimeScale: 90000, sequenceNumber: 0, samples: [], len: 0, dropped: 0 };
this._audioTrack = { container: 'video/mp2t', type: 'audio', id: -1, inputTimeScale: 90000, sequenceNumber: 0, samples: [], len: 0, isAAC: true };
this._id3Track = { type: 'id3', id: -1, inputTimeScale: 90000, sequenceNumber: 0, samples: [], len: 0 };
this._txtTrack = { type: 'text', id: -1, inputTimeScale: 90000, sequenceNumber: 0, samples: [], len: 0 };
// flush any partial content
this.aacOverFlow = null;
this.aacLastPTS = null;
this.avcSample = null;
this.audioCodec = audioCodec;
this.videoCodec = videoCodec;
this._duration = duration;
}
}, {
key: 'resetTimeStamp',
value: function resetTimeStamp() {}
// feed incoming data to the front of the parsing pipeline
}, {
key: 'append',
value: function append(data, timeOffset, contiguous, accurateTimeOffset) {
var start,
len = data.length,
stt,
pid,
atf,
offset,
pes,
unknownPIDs = false;
this.contiguous = contiguous;
var pmtParsed = this.pmtParsed,
avcTrack = this._avcTrack,
audioTrack = this._audioTrack,
id3Track = this._id3Track,
avcId = avcTrack.id,
audioId = audioTrack.id,
id3Id = id3Track.id,
pmtId = this._pmtId,
avcData = avcTrack.pesData,
audioData = audioTrack.pesData,
id3Data = id3Track.pesData,
parsePAT = this._parsePAT,
parsePMT = this._parsePMT,
parsePES = this._parsePES,
parseAVCPES = this._parseAVCPES.bind(this),
parseAACPES = this._parseAACPES.bind(this),
parseMPEGPES = this._parseMPEGPES.bind(this),
parseID3PES = this._parseID3PES.bind(this);
// don't parse last TS packet if incomplete
len -= len % 188;
// loop through TS packets
for (start = 0; start < len; start += 188) {
if (data[start] === 0x47) {
stt = !!(data[start + 1] & 0x40);
// pid is a 13-bit field starting at the last bit of TS[1]
pid = ((data[start + 1] & 0x1f) << 8) + data[start + 2];
atf = (data[start + 3] & 0x30) >> 4;
// if an adaption field is present, its length is specified by the fifth byte of the TS packet header.
if (atf > 1) {
offset = start + 5 + data[start + 4];
// continue if there is only adaptation field
if (offset === start + 188) {
continue;
}
} else {
offset = start + 4;
}
switch (pid) {
case avcId:
if (stt) {
if (avcData && (pes = parsePES(avcData))) {
parseAVCPES(pes, false);
}
avcData = { data: [], size: 0 };
}
if (avcData) {
avcData.data.push(data.subarray(offset, start + 188));
avcData.size += start + 188 - offset;
}
break;
case audioId:
if (stt) {
if (audioData && (pes = parsePES(audioData))) {
if (audioTrack.isAAC) {
parseAACPES(pes);
} else {
parseMPEGPES(pes);
}
}
audioData = { data: [], size: 0 };
}
if (audioData) {
audioData.data.push(data.subarray(offset, start + 188));
audioData.size += start + 188 - offset;
}
break;
case id3Id:
if (stt) {
if (id3Data && (pes = parsePES(id3Data))) {
parseID3PES(pes);
}
id3Data = { data: [], size: 0 };
}
if (id3Data) {
id3Data.data.push(data.subarray(offset, start + 188));
id3Data.size += start + 188 - offset;
}
break;
case 0:
if (stt) {
offset += data[offset] + 1;
}
pmtId = this._pmtId = parsePAT(data, offset);
break;
case pmtId:
if (stt) {
offset += data[offset] + 1;
}
var parsedPIDs = parsePMT(data, offset, this.typeSupported.mpeg === true || this.typeSupported.mp3 === true, this.sampleAes != null);
// only update track id if track PID found while parsing PMT
// this is to avoid resetting the PID to -1 in case
// track PID transiently disappears from the stream
// this could happen in case of transient missing audio samples for example
avcId = parsedPIDs.avc;
if (avcId > 0) {
avcTrack.id = avcId;
}
audioId = parsedPIDs.audio;
if (audioId > 0) {
audioTrack.id = audioId;
audioTrack.isAAC = parsedPIDs.isAAC;
}
id3Id = parsedPIDs.id3;
if (id3Id > 0) {
id3Track.id = id3Id;
}
if (unknownPIDs && !pmtParsed) {
_logger.logger.log('reparse from beginning');
unknownPIDs = false;
// we set it to -188, the += 188 in the for loop will reset start to 0
start = -188;
}
pmtParsed = this.pmtParsed = true;
break;
case 17:
case 0x1fff:
break;
default:
unknownPIDs = true;
break;
}
} else {
this.observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_PARSING_ERROR, fatal: false, reason: 'TS packet did not start with 0x47' });
}
}
// try to parse last PES packets
if (avcData && (pes = parsePES(avcData))) {
parseAVCPES(pes, true);
avcTrack.pesData = null;
} else {
// either avcData null or PES truncated, keep it for next frag parsing
avcTrack.pesData = avcData;
}
if (audioData && (pes = parsePES(audioData))) {
if (audioTrack.isAAC) {
parseAACPES(pes);
} else {
parseMPEGPES(pes);
}
audioTrack.pesData = null;
} else {
if (audioData && audioData.size) {
_logger.logger.log('last AAC PES packet truncated,might overlap between fragments');
}
// either audioData null or PES truncated, keep it for next frag parsing
audioTrack.pesData = audioData;
}
if (id3Data && (pes = parsePES(id3Data))) {
parseID3PES(pes);
id3Track.pesData = null;
} else {
// either id3Data null or PES truncated, keep it for next frag parsing
id3Track.pesData = id3Data;
}
if (this.sampleAes == null) {
this.remuxer.remux(audioTrack, avcTrack, id3Track, this._txtTrack, timeOffset, contiguous, accurateTimeOffset);
} else {
this.decryptAndRemux(audioTrack, avcTrack, id3Track, this._txtTrack, timeOffset, contiguous, accurateTimeOffset);
}
}
}, {
key: 'decryptAndRemux',
value: function decryptAndRemux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
if (audioTrack.samples && audioTrack.isAAC) {
var localthis = this;
this.sampleAes.decryptAacSamples(audioTrack.samples, 0, function () {
localthis.decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
});
} else {
this.decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
}
}
}, {
key: 'decryptAndRemuxAvc',
value: function decryptAndRemuxAvc(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
if (videoTrack.samples) {
var localthis = this;
this.sampleAes.decryptAvcSamples(videoTrack.samples, 0, 0, function () {
localthis.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
});
} else {
this.remuxer.remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset);
}
}
}, {
key: 'destroy',
value: function destroy() {
this._initPTS = this._initDTS = undefined;
this._duration = 0;
}
}, {
key: '_parsePAT',
value: function _parsePAT(data, offset) {
// skip the PSI header and parse the first PMT entry
return (data[offset + 10] & 0x1F) << 8 | data[offset + 11];
//logger.log('PMT PID:' + this._pmtId);
}
}, {
key: '_parsePMT',
value: function _parsePMT(data, offset, mpegSupported, isSampleAes) {
var sectionLength,
tableEnd,
programInfoLength,
pid,
result = { audio: -1, avc: -1, id3: -1, isAAC: true };
sectionLength = (data[offset + 1] & 0x0f) << 8 | data[offset + 2];
tableEnd = offset + 3 + sectionLength - 4;
// to determine where the table is, we have to figure out how
// long the program info descriptors are
programInfoLength = (data[offset + 10] & 0x0f) << 8 | data[offset + 11];
// advance the offset to the first entry in the mapping table
offset += 12 + programInfoLength;
while (offset < tableEnd) {
pid = (data[offset + 1] & 0x1F) << 8 | data[offset + 2];
switch (data[offset]) {
case 0xcf:
// SAMPLE-AES AAC
if (!isSampleAes) {
_logger.logger.log('unkown stream type:' + data[offset]);
break;
}
/* falls through */
// ISO/IEC 13818-7 ADTS AAC (MPEG-2 lower bit-rate audio)
case 0x0f:
//logger.log('AAC PID:' + pid);
if (result.audio === -1) {
result.audio = pid;
}
break;
// Packetized metadata (ID3)
case 0x15:
//logger.log('ID3 PID:' + pid);
if (result.id3 === -1) {
result.id3 = pid;
}
break;
case 0xdb:
// SAMPLE-AES AVC
if (!isSampleAes) {
_logger.logger.log('unkown stream type:' + data[offset]);
break;
}
/* falls through */
// ITU-T Rec. H.264 and ISO/IEC 14496-10 (lower bit-rate video)
case 0x1b:
//logger.log('AVC PID:' + pid);
if (result.avc === -1) {
result.avc = pid;
}
break;
// ISO/IEC 11172-3 (MPEG-1 audio)
// or ISO/IEC 13818-3 (MPEG-2 halved sample rate audio)
case 0x03:
case 0x04:
//logger.log('MPEG PID:' + pid);
if (!mpegSupported) {
_logger.logger.log('MPEG audio found, not supported in this browser for now');
} else if (result.audio === -1) {
result.audio = pid;
result.isAAC = false;
}
break;
case 0x24:
_logger.logger.warn('HEVC stream type found, not supported for now');
break;
default:
_logger.logger.log('unkown stream type:' + data[offset]);
break;
}
// move to the next table entry
// skip past the elementary stream descriptors, if present
offset += ((data[offset + 3] & 0x0F) << 8 | data[offset + 4]) + 5;
}
return result;
}
}, {
key: '_parsePES',
value: function _parsePES(stream) {
var i = 0,
frag,
pesFlags,
pesPrefix,
pesLen,
pesHdrLen,
pesData,
pesPts,
pesDts,
payloadStartOffset,
data = stream.data;
// safety check
if (!stream || stream.size === 0) {
return null;
}
// we might need up to 19 bytes to read PES header
// if first chunk of data is less than 19 bytes, let's merge it with following ones until we get 19 bytes
// usually only one merge is needed (and this is rare ...)
while (data[0].length < 19 && data.length > 1) {
var newData = new Uint8Array(data[0].length + data[1].length);
newData.set(data[0]);
newData.set(data[1], data[0].length);
data[0] = newData;
data.splice(1, 1);
}
//retrieve PTS/DTS from first fragment
frag = data[0];
pesPrefix = (frag[0] << 16) + (frag[1] << 8) + frag[2];
if (pesPrefix === 1) {
pesLen = (frag[4] << 8) + frag[5];
// if PES parsed length is not zero and greater than total received length, stop parsing. PES might be truncated
// minus 6 : PES header size
if (pesLen && pesLen > stream.size - 6) {
return null;
}
pesFlags = frag[7];
if (pesFlags & 0xC0) {
/* PES header described here : http://dvd.sourceforge.net/dvdinfo/pes-hdr.html
as PTS / DTS is 33 bit we cannot use bitwise operator in JS,
as Bitwise operators treat their operands as a sequence of 32 bits */
pesPts = (frag[9] & 0x0E) * 536870912 + // 1 << 29
(frag[10] & 0xFF) * 4194304 + // 1 << 22
(frag[11] & 0xFE) * 16384 + // 1 << 14
(frag[12] & 0xFF) * 128 + // 1 << 7
(frag[13] & 0xFE) / 2;
// check if greater than 2^32 -1
if (pesPts > 4294967295) {
// decrement 2^33
pesPts -= 8589934592;
}
if (pesFlags & 0x40) {
pesDts = (frag[14] & 0x0E) * 536870912 + // 1 << 29
(frag[15] & 0xFF) * 4194304 + // 1 << 22
(frag[16] & 0xFE) * 16384 + // 1 << 14
(frag[17] & 0xFF) * 128 + // 1 << 7
(frag[18] & 0xFE) / 2;
// check if greater than 2^32 -1
if (pesDts > 4294967295) {
// decrement 2^33
pesDts -= 8589934592;
}
if (pesPts - pesDts > 60 * 90000) {
_logger.logger.warn(Math.round((pesPts - pesDts) / 90000) + 's delta between PTS and DTS, align them');
pesPts = pesDts;
}
} else {
pesDts = pesPts;
}
}
pesHdrLen = frag[8];
// 9 bytes : 6 bytes for PES header + 3 bytes for PES extension
payloadStartOffset = pesHdrLen + 9;
stream.size -= payloadStartOffset;
//reassemble PES packet
pesData = new Uint8Array(stream.size);
for (var j = 0, dataLen = data.length; j < dataLen; j++) {
frag = data[j];
var len = frag.byteLength;
if (payloadStartOffset) {
if (payloadStartOffset > len) {
// trim full frag if PES header bigger than frag
payloadStartOffset -= len;
continue;
} else {
// trim partial frag if PES header smaller than frag
frag = frag.subarray(payloadStartOffset);
len -= payloadStartOffset;
payloadStartOffset = 0;
}
}
pesData.set(frag, i);
i += len;
}
if (pesLen) {
// payload size : remove PES header + PES extension
pesLen -= pesHdrLen + 3;
}
return { data: pesData, pts: pesPts, dts: pesDts, len: pesLen };
} else {
return null;
}
}
}, {
key: 'pushAccesUnit',
value: function pushAccesUnit(avcSample, avcTrack) {
if (avcSample.units.length && avcSample.frame) {
var samples = avcTrack.samples;
var nbSamples = samples.length;
// only push AVC sample if starting with a keyframe is not mandatory OR
// if keyframe already found in this fragment OR
// keyframe found in last fragment (track.sps) AND
// samples already appended (we already found a keyframe in this fragment) OR fragment is contiguous
if (!this.config.forceKeyFrameOnDiscontinuity || avcSample.key === true || avcTrack.sps && (nbSamples || this.contiguous)) {
avcSample.id = nbSamples;
samples.push(avcSample);
} else {
// dropped samples, track it
avcTrack.dropped++;
}
}
if (avcSample.debug.length) {
_logger.logger.log(avcSample.pts + '/' + avcSample.dts + ':' + avcSample.debug);
}
}
}, {
key: '_parseAVCPES',
value: function _parseAVCPES(pes, last) {
var _this = this;
//logger.log('parse new PES');
var track = this._avcTrack,
units = this._parseAVCNALu(pes.data),
debug = false,
expGolombDecoder,
avcSample = this.avcSample,
push,
i;
//free pes.data to save up some memory
pes.data = null;
units.forEach(function (unit) {
switch (unit.type) {
//NDR
case 1:
push = true;
if (debug && avcSample) {
avcSample.debug += 'NDR ';
}
avcSample.frame = true;
// retrieve slice type by parsing beginning of NAL unit (follow H264 spec, slice_header definition) to detect keyframe embedded in NDR
var data = unit.data;
if (data.length > 4) {
var sliceType = new _expGolomb2.default(data).readSliceType();
// 2 : I slice, 4 : SI slice, 7 : I slice, 9: SI slice
// SI slice : A slice that is coded using intra prediction only and using quantisation of the prediction samples.
// An SI slice can be coded such that its decoded samples can be constructed identically to an SP slice.
// I slice: A slice that is not an SI slice that is decoded using intra prediction only.
//if (sliceType === 2 || sliceType === 7) {
if (sliceType === 2 || sliceType === 4 || sliceType === 7 || sliceType === 9) {
avcSample.key = true;
}
}
break;
//IDR
case 5:
push = true;
// handle PES not starting with AUD
if (!avcSample) {
avcSample = _this.avcSample = _this._createAVCSample(true, pes.pts, pes.dts, '');
}
if (debug) {
avcSample.debug += 'IDR ';
}
avcSample.key = true;
avcSample.frame = true;
break;
//SEI
case 6:
push = true;
if (debug && avcSample) {
avcSample.debug += 'SEI ';
}
expGolombDecoder = new _expGolomb2.default(_this.discardEPB(unit.data));
// skip frameType
expGolombDecoder.readUByte();
var payloadType = 0;
var payloadSize = 0;
var endOfCaptions = false;
var b = 0;
while (!endOfCaptions && expGolombDecoder.bytesAvailable > 1) {
payloadType = 0;
do {
b = expGolombDecoder.readUByte();
payloadType += b;
} while (b === 0xFF);
// Parse payload size.
payloadSize = 0;
do {
b = expGolombDecoder.readUByte();
payloadSize += b;
} while (b === 0xFF);
// TODO: there can be more than one payload in an SEI packet...
// TODO: need to read type and size in a while loop to get them all
if (payloadType === 4 && expGolombDecoder.bytesAvailable !== 0) {
endOfCaptions = true;
var countryCode = expGolombDecoder.readUByte();
if (countryCode === 181) {
var providerCode = expGolombDecoder.readUShort();
if (providerCode === 49) {
var userStructure = expGolombDecoder.readUInt();
if (userStructure === 0x47413934) {
var userDataType = expGolombDecoder.readUByte();
// Raw CEA-608 bytes wrapped in CEA-708 packet
if (userDataType === 3) {
var firstByte = expGolombDecoder.readUByte();
var secondByte = expGolombDecoder.readUByte();
var totalCCs = 31 & firstByte;
var byteArray = [firstByte, secondByte];
for (i = 0; i < totalCCs; i++) {
// 3 bytes per CC
byteArray.push(expGolombDecoder.readUByte());
byteArray.push(expGolombDecoder.readUByte());
byteArray.push(expGolombDecoder.readUByte());
}
_this._insertSampleInOrder(_this._txtTrack.samples, { type: 3, pts: pes.pts, bytes: byteArray });
}
}
}
}
} else if (payloadSize < expGolombDecoder.bytesAvailable) {
for (i = 0; i < payloadSize; i++) {
expGolombDecoder.readUByte();
}
}
}
break;
//SPS
case 7:
push = true;
if (debug && avcSample) {
avcSample.debug += 'SPS ';
}
if (!track.sps) {
expGolombDecoder = new _expGolomb2.default(unit.data);
var config = expGolombDecoder.readSPS();
track.width = config.width;
track.height = config.height;
track.pixelRatio = config.pixelRatio;
track.sps = [unit.data];
track.duration = _this._duration;
var codecarray = unit.data.subarray(1, 4);
var codecstring = 'avc1.';
for (i = 0; i < 3; i++) {
var h = codecarray[i].toString(16);
if (h.length < 2) {
h = '0' + h;
}
codecstring += h;
}
track.codec = codecstring;
}
break;
//PPS
case 8:
push = true;
if (debug && avcSample) {
avcSample.debug += 'PPS ';
}
if (!track.pps) {
track.pps = [unit.data];
}
break;
// AUD
case 9:
push = false;
if (avcSample) {
_this.pushAccesUnit(avcSample, track);
}
avcSample = _this.avcSample = _this._createAVCSample(false, pes.pts, pes.dts, debug ? 'AUD ' : '');
break;
// Filler Data
case 12:
push = false;
break;
default:
push = false;
if (avcSample) {
avcSample.debug += 'unknown NAL ' + unit.type + ' ';
}
break;
}
if (avcSample && push) {
var _units = avcSample.units;
_units.push(unit);
}
});
// if last PES packet, push samples
if (last && avcSample) {
this.pushAccesUnit(avcSample, track);
this.avcSample = null;
}
}
}, {
key: '_createAVCSample',
value: function _createAVCSample(key, pts, dts, debug) {
return { key: key, pts: pts, dts: dts, units: [], debug: debug };
}
}, {
key: '_insertSampleInOrder',
value: function _insertSampleInOrder(arr, data) {
var len = arr.length;
if (len > 0) {
if (data.pts >= arr[len - 1].pts) {
arr.push(data);
} else {
for (var pos = len - 1; pos >= 0; pos--) {
if (data.pts < arr[pos].pts) {
arr.splice(pos, 0, data);
break;
}
}
}
} else {
arr.push(data);
}
}
}, {
key: '_getLastNalUnit',
value: function _getLastNalUnit() {
var avcSample = this.avcSample,
lastUnit = void 0;
// try to fallback to previous sample if current one is empty
if (!avcSample || avcSample.units.length === 0) {
var track = this._avcTrack,
samples = track.samples;
avcSample = samples[samples.length - 1];
}
if (avcSample) {
var units = avcSample.units;
lastUnit = units[units.length - 1];
}
return lastUnit;
}
}, {
key: '_parseAVCNALu',
value: function _parseAVCNALu(array) {
var i = 0,
len = array.byteLength,
value,
overflow,
track = this._avcTrack,
state = track.naluState || 0,
lastState = state;
var units = [],
unit,
unitType,
lastUnitStart = -1,
lastUnitType;
//logger.log('PES:' + Hex.hexDump(array));
if (state === -1) {
// special use case where we found 3 or 4-byte start codes exactly at the end of previous PES packet
lastUnitStart = 0;
// NALu type is value read from offset 0
lastUnitType = array[0] & 0x1f;
state = 0;
i = 1;
}
while (i < len) {
value = array[i++];
// optimization. state 0 and 1 are the predominant case. let's handle them outside of the switch/case
if (!state) {
state = value ? 0 : 1;
continue;
}
if (state === 1) {
state = value ? 0 : 2;
continue;
}
// here we have state either equal to 2 or 3
if (!value) {
state = 3;
} else if (value === 1) {
if (lastUnitStart >= 0) {
unit = { data: array.subarray(lastUnitStart, i - state - 1), type: lastUnitType };
//logger.log('pushing NALU, type/size:' + unit.type + '/' + unit.data.byteLength);
units.push(unit);
} else {
// lastUnitStart is undefined => this is the first start code found in this PES packet
// first check if start code delimiter is overlapping between 2 PES packets,
// ie it started in last packet (lastState not zero)
// and ended at the beginning of this PES packet (i <= 4 - lastState)
var lastUnit = this._getLastNalUnit();
if (lastUnit) {
if (lastState && i <= 4 - lastState) {
// start delimiter overlapping between PES packets
// strip start delimiter bytes from the end of last NAL unit
// check if lastUnit had a state different from zero
if (lastUnit.state) {
// strip last bytes
lastUnit.data = lastUnit.data.subarray(0, lastUnit.data.byteLength - lastState);
}
}
// If NAL units are not starting right at the beginning of the PES packet, push preceding data into previous NAL unit.
overflow = i - state - 1;
if (overflow > 0) {
//logger.log('first NALU found with overflow:' + overflow);
var tmp = new Uint8Array(lastUnit.data.byteLength + overflow);
tmp.set(lastUnit.data, 0);
tmp.set(array.subarray(0, overflow), lastUnit.data.byteLength);
lastUnit.data = tmp;
}
}
}
// check if we can read unit type
if (i < len) {
unitType = array[i] & 0x1f;
//logger.log('find NALU @ offset:' + i + ',type:' + unitType);
lastUnitStart = i;
lastUnitType = unitType;
state = 0;
} else {
// not enough byte to read unit type. let's read it on next PES parsing
state = -1;
}
} else {
state = 0;
}
}
if (lastUnitStart >= 0 && state >= 0) {
unit = { data: array.subarray(lastUnitStart, len), type: lastUnitType, state: state };
units.push(unit);
//logger.log('pushing NALU, type/size/state:' + unit.type + '/' + unit.data.byteLength + '/' + state);
}
// no NALu found
if (units.length === 0) {
// append pes.data to previous NAL unit
var _lastUnit = this._getLastNalUnit();
if (_lastUnit) {
var _tmp = new Uint8Array(_lastUnit.data.byteLength + array.byteLength);
_tmp.set(_lastUnit.data, 0);
_tmp.set(array, _lastUnit.data.byteLength);
_lastUnit.data = _tmp;
}
}
track.naluState = state;
return units;
}
/**
* remove Emulation Prevention bytes from a RBSP
*/
}, {
key: 'discardEPB',
value: function discardEPB(data) {
var length = data.byteLength,
EPBPositions = [],
i = 1,
newLength,
newData;
// Find all `Emulation Prevention Bytes`
while (i < length - 2) {
if (data[i] === 0 && data[i + 1] === 0 && data[i + 2] === 0x03) {
EPBPositions.push(i + 2);
i += 2;
} else {
i++;
}
}
// If no Emulation Prevention Bytes were found just return the original
// array
if (EPBPositions.length === 0) {
return data;
}
// Create a new array to hold the NAL unit data
newLength = length - EPBPositions.length;
newData = new Uint8Array(newLength);
var sourceIndex = 0;
for (i = 0; i < newLength; sourceIndex++, i++) {
if (sourceIndex === EPBPositions[0]) {
// Skip this byte
sourceIndex++;
// Remove this position index
EPBPositions.shift();
}
newData[i] = data[sourceIndex];
}
return newData;
}
}, {
key: '_parseAACPES',
value: function _parseAACPES(pes) {
var track = this._audioTrack,
data = pes.data,
pts = pes.pts,
startOffset = 0,
aacOverFlow = this.aacOverFlow,
aacLastPTS = this.aacLastPTS,
config,
frameLength,
frameDuration,
frameIndex,
offset,
headerLength,
stamp,
len,
aacSample;
if (aacOverFlow) {
var tmp = new Uint8Array(aacOverFlow.byteLength + data.byteLength);
tmp.set(aacOverFlow, 0);
tmp.set(data, aacOverFlow.byteLength);
//logger.log(`AAC: append overflowing ${aacOverFlow.byteLength} bytes to beginning of new PES`);
data = tmp;
}
// look for ADTS header (0xFFFx)
for (offset = startOffset, len = data.length; offset < len - 1; offset++) {
if (data[offset] === 0xff && (data[offset + 1] & 0xf0) === 0xf0) {
break;
}
}
// if ADTS header does not start straight from the beginning of the PES payload, raise an error
if (offset) {
var reason, fatal;
if (offset < len - 1) {
reason = 'AAC PES did not start with ADTS header,offset:' + offset;
fatal = false;
} else {
reason = 'no ADTS header found in AAC PES';
fatal = true;
}
_logger.logger.warn('parsing error:' + reason);
this.observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_PARSING_ERROR, fatal: fatal, reason: reason });
if (fatal) {
return;
}
}
if (!track.samplerate) {
var audioCodec = this.audioCodec;
config = _adts2.default.getAudioConfig(this.observer, data, offset, audioCodec);
track.config = config.config;
track.samplerate = config.samplerate;
track.channelCount = config.channelCount;
track.codec = config.codec;
track.manifestCodec = config.manifestCodec;
track.duration = this._duration;
_logger.logger.log('parsed codec:' + track.codec + ',rate:' + config.samplerate + ',nb channel:' + config.channelCount);
}
frameIndex = 0;
frameDuration = 1024 * 90000 / track.samplerate;
// if last AAC frame is overflowing, we should ensure timestamps are contiguous:
// first sample PTS should be equal to last sample PTS + frameDuration
if (aacOverFlow && aacLastPTS) {
var newPTS = aacLastPTS + frameDuration;
if (Math.abs(newPTS - pts) > 1) {
_logger.logger.log('AAC: align PTS for overlapping frames by ' + Math.round((newPTS - pts) / 90));
pts = newPTS;
}
}
while (offset + 5 < len) {
// The protection skip bit tells us if we have 2 bytes of CRC data at the end of the ADTS header
headerLength = !!(data[offset + 1] & 0x01) ? 7 : 9;
// retrieve frame size
frameLength = (data[offset + 3] & 0x03) << 11 | data[offset + 4] << 3 | (data[offset + 5] & 0xE0) >>> 5;
frameLength -= headerLength;
//stamp = pes.pts;
if (frameLength > 0 && offset + headerLength + frameLength <= len) {
stamp = pts + frameIndex * frameDuration;
//logger.log(`AAC frame, offset/length/total/pts:${offset+headerLength}/${frameLength}/${data.byteLength}/${(stamp/90).toFixed(0)}`);
aacSample = { unit: data.subarray(offset + headerLength, offset + headerLength + frameLength), pts: stamp, dts: stamp };
track.samples.push(aacSample);
track.len += frameLength;
offset += frameLength + headerLength;
frameIndex++;
// look for ADTS header (0xFFFx)
for (; offset < len - 1; offset++) {
if (data[offset] === 0xff && (data[offset + 1] & 0xf0) === 0xf0) {
break;
}
}
} else {
break;
}
}
if (offset < len) {
aacOverFlow = data.subarray(offset, len);
//logger.log(`AAC: overflow detected:${len-offset}`);
} else {
aacOverFlow = null;
}
this.aacOverFlow = aacOverFlow;
this.aacLastPTS = stamp;
}
}, {
key: '_parseMPEGPES',
value: function _parseMPEGPES(pes) {
var data = pes.data;
var pts = pes.pts;
var length = data.length;
var frameIndex = 0;
var offset = 0;
var parsed;
while (offset < length && (parsed = this._parseMpeg(data, offset, length, frameIndex++, pts)) > 0) {
offset += parsed;
}
}
}, {
key: '_onMpegFrame',
value: function _onMpegFrame(data, bitRate, sampleRate, channelCount, frameIndex, pts) {
var frameDuration = 1152 / sampleRate * 1000;
var stamp = pts + frameIndex * frameDuration;
var track = this._audioTrack;
track.config = [];
track.channelCount = channelCount;
track.samplerate = sampleRate;
track.duration = this._duration;
track.samples.push({ unit: data, pts: stamp, dts: stamp });
track.len += data.length;
}
}, {
key: '_onMpegNoise',
value: function _onMpegNoise(data) {
_logger.logger.warn('mpeg audio has noise: ' + data.length + ' bytes');
}
}, {
key: '_parseMpeg',
value: function _parseMpeg(data, start, end, frameIndex, pts) {
var BitratesMap = [32, 64, 96, 128, 160, 192, 224, 256, 288, 320, 352, 384, 416, 448, 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384, 32, 40, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 32, 48, 56, 64, 80, 96, 112, 128, 144, 160, 176, 192, 224, 256, 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160];
var SamplingRateMap = [44100, 48000, 32000, 22050, 24000, 16000, 11025, 12000, 8000];
if (start + 2 > end) {
return -1; // we need at least 2 bytes to detect sync pattern
}
if (data[start] === 0xFF || (data[start + 1] & 0xE0) === 0xE0) {
// Using http://www.datavoyage.com/mpgscript/mpeghdr.htm as a reference
if (start + 24 > end) {
return -1;
}
var headerB = data[start + 1] >> 3 & 3;
var headerC = data[start + 1] >> 1 & 3;
var headerE = data[start + 2] >> 4 & 15;
var headerF = data[start + 2] >> 2 & 3;
var headerG = !!(data[start + 2] & 2);
if (headerB !== 1 && headerE !== 0 && headerE !== 15 && headerF !== 3) {
var columnInBitrates = headerB === 3 ? 3 - headerC : headerC === 3 ? 3 : 4;
var bitRate = BitratesMap[columnInBitrates * 14 + headerE - 1] * 1000;
var columnInSampleRates = headerB === 3 ? 0 : headerB === 2 ? 1 : 2;
var sampleRate = SamplingRateMap[columnInSampleRates * 3 + headerF];
var padding = headerG ? 1 : 0;
var channelCount = data[start + 3] >> 6 === 3 ? 1 : 2; // If bits of channel mode are `11` then it is a single channel (Mono)
var frameLength = headerC === 3 ? (headerB === 3 ? 12 : 6) * bitRate / sampleRate + padding << 2 : (headerB === 3 ? 144 : 72) * bitRate / sampleRate + padding | 0;
if (start + frameLength > end) {
return -1;
}
if (this._onMpegFrame) {
this._onMpegFrame(data.subarray(start, start + frameLength), bitRate, sampleRate, channelCount, frameIndex, pts);
}
return frameLength;
}
}
// noise or ID3, trying to skip
var offset = start + 2;
while (offset < end) {
if (data[offset - 1] === 0xFF && (data[offset] & 0xE0) === 0xE0) {
// sync pattern is found
if (this._onMpegNoise) {
this._onMpegNoise(data.subarray(start, offset - 1));
}
return offset - start - 1;
}
offset++;
}
return -1;
}
}, {
key: '_parseID3PES',
value: function _parseID3PES(pes) {
this._id3Track.samples.push(pes);
}
}], [{
key: 'probe',
value: function probe(data) {
// a TS fragment should contain at least 3 TS packets, a PAT, a PMT, and one PID, each starting with 0x47
if (data.length >= 3 * 188 && data[0] === 0x47 && data[188] === 0x47 && data[2 * 188] === 0x47) {
return true;
} else {
return false;
}
}
}]);
return TSDemuxer;
}();
exports.default = TSDemuxer;
},{"21":21,"25":25,"28":28,"30":30,"32":32,"50":50}],30:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var ErrorTypes = exports.ErrorTypes = {
// Identifier for a network error (loading error / timeout ...)
NETWORK_ERROR: 'networkError',
// Identifier for a media Error (video/parsing/mediasource error)
MEDIA_ERROR: 'mediaError',
// Identifier for a mux Error (demuxing/remuxing)
MUX_ERROR: 'muxError',
// Identifier for all other errors
OTHER_ERROR: 'otherError'
};
var ErrorDetails = exports.ErrorDetails = {
// Identifier for a manifest load error - data: { url : faulty URL, response : { code: error code, text: error text }}
MANIFEST_LOAD_ERROR: 'manifestLoadError',
// Identifier for a manifest load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
MANIFEST_LOAD_TIMEOUT: 'manifestLoadTimeOut',
// Identifier for a manifest parsing error - data: { url : faulty URL, reason : error reason}
MANIFEST_PARSING_ERROR: 'manifestParsingError',
// Identifier for a manifest with only incompatible codecs error - data: { url : faulty URL, reason : error reason}
MANIFEST_INCOMPATIBLE_CODECS_ERROR: 'manifestIncompatibleCodecsError',
// Identifier for a level load error - data: { url : faulty URL, response : { code: error code, text: error text }}
LEVEL_LOAD_ERROR: 'levelLoadError',
// Identifier for a level load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
LEVEL_LOAD_TIMEOUT: 'levelLoadTimeOut',
// Identifier for a level switch error - data: { level : faulty level Id, event : error description}
LEVEL_SWITCH_ERROR: 'levelSwitchError',
// Identifier for an audio track load error - data: { url : faulty URL, response : { code: error code, text: error text }}
AUDIO_TRACK_LOAD_ERROR: 'audioTrackLoadError',
// Identifier for an audio track load timeout - data: { url : faulty URL, response : { code: error code, text: error text }}
AUDIO_TRACK_LOAD_TIMEOUT: 'audioTrackLoadTimeOut',
// Identifier for fragment load error - data: { frag : fragment object, response : { code: error code, text: error text }}
FRAG_LOAD_ERROR: 'fragLoadError',
// Identifier for fragment loop loading error - data: { frag : fragment object}
FRAG_LOOP_LOADING_ERROR: 'fragLoopLoadingError',
// Identifier for fragment load timeout error - data: { frag : fragment object}
FRAG_LOAD_TIMEOUT: 'fragLoadTimeOut',
// Identifier for a fragment decryption error event - data: {id : demuxer Id,frag: fragment object, reason : parsing error description }
FRAG_DECRYPT_ERROR: 'fragDecryptError',
// Identifier for a fragment parsing error event - data: { id : demuxer Id, reason : parsing error description }
// will be renamed DEMUX_PARSING_ERROR and switched to MUX_ERROR in the next major release
FRAG_PARSING_ERROR: 'fragParsingError',
// Identifier for a remux alloc error event - data: { id : demuxer Id, frag : fragment object, bytes : nb of bytes on which allocation failed , reason : error text }
REMUX_ALLOC_ERROR: 'remuxAllocError',
// Identifier for decrypt key load error - data: { frag : fragment object, response : { code: error code, text: error text }}
KEY_LOAD_ERROR: 'keyLoadError',
// Identifier for decrypt key load timeout error - data: { frag : fragment object}
KEY_LOAD_TIMEOUT: 'keyLoadTimeOut',
// Triggered when an exception occurs while adding a sourceBuffer to MediaSource - data : { err : exception , mimeType : mimeType }
BUFFER_ADD_CODEC_ERROR: 'bufferAddCodecError',
// Identifier for a buffer append error - data: append error description
BUFFER_APPEND_ERROR: 'bufferAppendError',
// Identifier for a buffer appending error event - data: appending error description
BUFFER_APPENDING_ERROR: 'bufferAppendingError',
// Identifier for a buffer stalled error event
BUFFER_STALLED_ERROR: 'bufferStalledError',
// Identifier for a buffer full event
BUFFER_FULL_ERROR: 'bufferFullError',
// Identifier for a buffer seek over hole event
BUFFER_SEEK_OVER_HOLE: 'bufferSeekOverHole',
// Identifier for a buffer nudge on stall (playback is stuck although currentTime is in a buffered area)
BUFFER_NUDGE_ON_STALL: 'bufferNudgeOnStall',
// Identifier for an internal exception happening inside hls.js while handling an event
INTERNAL_EXCEPTION: 'internalException',
// Malformed WebVTT contents
WEBVTT_EXCEPTION: 'webVTTException'
};
},{}],31:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /*
*
* All objects in the event handling chain should inherit from this class
*
*/
var _logger = _dereq_(50);
var _errors = _dereq_(30);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var EventHandler = function () {
function EventHandler(hls) {
_classCallCheck(this, EventHandler);
this.hls = hls;
this.onEvent = this.onEvent.bind(this);
for (var _len = arguments.length, events = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
events[_key - 1] = arguments[_key];
}
this.handledEvents = events;
this.useGenericHandler = true;
this.registerListeners();
}
_createClass(EventHandler, [{
key: 'destroy',
value: function destroy() {
this.unregisterListeners();
}
}, {
key: 'isEventHandler',
value: function isEventHandler() {
return _typeof(this.handledEvents) === 'object' && this.handledEvents.length && typeof this.onEvent === 'function';
}
}, {
key: 'registerListeners',
value: function registerListeners() {
if (this.isEventHandler()) {
this.handledEvents.forEach(function (event) {
if (event === 'hlsEventGeneric') {
throw new Error('Forbidden event name: ' + event);
}
this.hls.on(event, this.onEvent);
}.bind(this));
}
}
}, {
key: 'unregisterListeners',
value: function unregisterListeners() {
if (this.isEventHandler()) {
this.handledEvents.forEach(function (event) {
this.hls.off(event, this.onEvent);
}.bind(this));
}
}
/**
* arguments: event (string), data (any)
*/
}, {
key: 'onEvent',
value: function onEvent(event, data) {
this.onEventGeneric(event, data);
}
}, {
key: 'onEventGeneric',
value: function onEventGeneric(event, data) {
var eventToFunction = function eventToFunction(event, data) {
var funcName = 'on' + event.replace('hls', '');
if (typeof this[funcName] !== 'function') {
throw new Error('Event ' + event + ' has no generic handler in this ' + this.constructor.name + ' class (tried ' + funcName + ')');
}
return this[funcName].bind(this, data);
};
try {
eventToFunction.call(this, event, data).call();
} catch (err) {
_logger.logger.error('internal error happened while processing ' + event + ':' + err.message);
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.OTHER_ERROR, details: _errors.ErrorDetails.INTERNAL_EXCEPTION, fatal: false, event: event, err: err });
}
}
}]);
return EventHandler;
}();
exports.default = EventHandler;
},{"30":30,"32":32,"50":50}],32:[function(_dereq_,module,exports){
'use strict';
module.exports = {
// fired before MediaSource is attaching to media element - data: { media }
MEDIA_ATTACHING: 'hlsMediaAttaching',
// fired when MediaSource has been succesfully attached to media element - data: { }
MEDIA_ATTACHED: 'hlsMediaAttached',
// fired before detaching MediaSource from media element - data: { }
MEDIA_DETACHING: 'hlsMediaDetaching',
// fired when MediaSource has been detached from media element - data: { }
MEDIA_DETACHED: 'hlsMediaDetached',
// fired when we buffer is going to be resetted
BUFFER_RESET: 'hlsBufferReset',
// fired when we know about the codecs that we need buffers for to push into - data: {tracks : { container, codec, levelCodec, initSegment, metadata }}
BUFFER_CODECS: 'hlsBufferCodecs',
// fired when sourcebuffers have been created data: { tracks : tracks}
BUFFER_CREATED: 'hlsBufferCreated',
// fired when we append a segment to the buffer - data: { segment: segment object }
BUFFER_APPENDING: 'hlsBufferAppending',
// fired when we are done with appending a media segment to the buffer data : { parent : segment parent that triggered BUFFER_APPENDING , pending : nb of segments waiting for appending for this segment parent}
BUFFER_APPENDED: 'hlsBufferAppended',
// fired when the stream is finished and we want to notify the media buffer that there will be no more data
BUFFER_EOS: 'hlsBufferEos',
// fired when the media buffer should be flushed - data {startOffset, endOffset}
BUFFER_FLUSHING: 'hlsBufferFlushing',
// fired when the media has been flushed
BUFFER_FLUSHED: 'hlsBufferFlushed',
// fired to signal that a manifest loading starts - data: { url : manifestURL}
MANIFEST_LOADING: 'hlsManifestLoading',
// fired after manifest has been loaded - data: { levels : [available quality levels] , audioTracks : [ available audio tracks], url : manifestURL, stats : { trequest, tfirst, tload, mtime}}
MANIFEST_LOADED: 'hlsManifestLoaded',
// fired after manifest has been parsed - data: { levels : [available quality levels] , firstLevel : index of first quality level appearing in Manifest}
MANIFEST_PARSED: 'hlsManifestParsed',
// fired when a level switch is requested - data: { level : id of new level } // deprecated in favor LEVEL_SWITCHING
LEVEL_SWITCH: 'hlsLevelSwitch',
// fired when a level switch is requested - data: { level : id of new level }
LEVEL_SWITCHING: 'hlsLevelSwitching',
// fired when a level switch is effective - data: { level : id of new level }
LEVEL_SWITCHED: 'hlsLevelSwitched',
// fired when a level playlist loading starts - data: { url : level URL level : id of level being loaded}
LEVEL_LOADING: 'hlsLevelLoading',
// fired when a level playlist loading finishes - data: { details : levelDetails object, level : id of loaded level, stats : { trequest, tfirst, tload, mtime} }
LEVEL_LOADED: 'hlsLevelLoaded',
// fired when a level's details have been updated based on previous details, after it has been loaded. - data: { details : levelDetails object, level : id of updated level }
LEVEL_UPDATED: 'hlsLevelUpdated',
// fired when a level's PTS information has been updated after parsing a fragment - data: { details : levelDetails object, level : id of updated level, drift: PTS drift observed when parsing last fragment }
LEVEL_PTS_UPDATED: 'hlsLevelPtsUpdated',
// fired to notify that audio track lists has been updated data: { audioTracks : audioTracks}
AUDIO_TRACKS_UPDATED: 'hlsAudioTracksUpdated',
// fired when an audio track switch occurs - data: { id : audio track id} // deprecated in favor AUDIO_TRACK_SWITCHING
AUDIO_TRACK_SWITCH: 'hlsAudioTrackSwitch',
// fired when an audio track switching is requested - data: { id : audio track id}
AUDIO_TRACK_SWITCHING: 'hlsAudioTrackSwitching',
// fired when an audio track switch actually occurs - data: { id : audio track id}
AUDIO_TRACK_SWITCHED: 'hlsAudioTrackSwitched',
// fired when an audio track loading starts - data: { url : audio track URL id : audio track id}
AUDIO_TRACK_LOADING: 'hlsAudioTrackLoading',
// fired when an audio track loading finishes - data: { details : levelDetails object, id : audio track id, stats : { trequest, tfirst, tload, mtime} }
AUDIO_TRACK_LOADED: 'hlsAudioTrackLoaded',
// fired to notify that subtitle track lists has been updated data: { subtitleTracks : subtitleTracks}
SUBTITLE_TRACKS_UPDATED: 'hlsSubtitleTracksUpdated',
// fired when an subtitle track switch occurs - data: { id : subtitle track id}
SUBTITLE_TRACK_SWITCH: 'hlsSubtitleTrackSwitch',
// fired when an subtitle track loading starts - data: { url : subtitle track URL id : subtitle track id}
SUBTITLE_TRACK_LOADING: 'hlsSubtitleTrackLoading',
// fired when an subtitle track loading finishes - data: { details : levelDetails object, id : subtitle track id, stats : { trequest, tfirst, tload, mtime} }
SUBTITLE_TRACK_LOADED: 'hlsSubtitleTrackLoaded',
// fired when a subtitle fragment has been processed - data: { success : boolean, frag : the processed frag}
SUBTITLE_FRAG_PROCESSED: 'hlsSubtitleFragProcessed',
// fired when the first timestamp is found. - data: { id : demuxer id, initPTS: initPTS , frag : fragment object}
INIT_PTS_FOUND: 'hlsInitPtsFound',
// fired when a fragment loading starts - data: { frag : fragment object}
FRAG_LOADING: 'hlsFragLoading',
// fired when a fragment loading is progressing - data: { frag : fragment object, { trequest, tfirst, loaded}}
FRAG_LOAD_PROGRESS: 'hlsFragLoadProgress',
// Identifier for fragment load aborting for emergency switch down - data: {frag : fragment object}
FRAG_LOAD_EMERGENCY_ABORTED: 'hlsFragLoadEmergencyAborted',
// fired when a fragment loading is completed - data: { frag : fragment object, payload : fragment payload, stats : { trequest, tfirst, tload, length}}
FRAG_LOADED: 'hlsFragLoaded',
// fired when a fragment has finished decrypting - data: { id : demuxer id, frag: fragment object, stats : {tstart,tdecrypt} }
FRAG_DECRYPTED: 'hlsFragDecrypted',
// fired when Init Segment has been extracted from fragment - data: { id : demuxer id, frag: fragment object, moov : moov MP4 box, codecs : codecs found while parsing fragment}
FRAG_PARSING_INIT_SEGMENT: 'hlsFragParsingInitSegment',
// fired when parsing sei text is completed - data: { id : demuxer id, , frag: fragment object, samples : [ sei samples pes ] }
FRAG_PARSING_USERDATA: 'hlsFragParsingUserdata',
// fired when parsing id3 is completed - data: { id : demuxer id, frag: fragment object, samples : [ id3 samples pes ] }
FRAG_PARSING_METADATA: 'hlsFragParsingMetadata',
// fired when data have been extracted from fragment - data: { id : demuxer id, frag: fragment object, data1 : moof MP4 box or TS fragments, data2 : mdat MP4 box or null}
FRAG_PARSING_DATA: 'hlsFragParsingData',
// fired when fragment parsing is completed - data: { id : demuxer id,frag: fragment object }
FRAG_PARSED: 'hlsFragParsed',
// fired when fragment remuxed MP4 boxes have all been appended into SourceBuffer - data: { id : demuxer id,frag : fragment object, stats : { trequest, tfirst, tload, tparsed, tbuffered, length} }
FRAG_BUFFERED: 'hlsFragBuffered',
// fired when fragment matching with current media position is changing - data : { id : demuxer id, frag : fragment object }
FRAG_CHANGED: 'hlsFragChanged',
// Identifier for a FPS drop event - data: {curentDropped, currentDecoded, totalDroppedFrames}
FPS_DROP: 'hlsFpsDrop',
//triggered when FPS drop triggers auto level capping - data: {level, droppedlevel}
FPS_DROP_LEVEL_CAPPING: 'hlsFpsDropLevelCapping',
// Identifier for an error event - data: { type : error type, details : error details, fatal : if true, hls.js cannot/will not try to recover, if false, hls.js will try to recover,other error specific data}
ERROR: 'hlsError',
// fired when hls.js instance starts destroying. Different from MEDIA_DETACHED as one could want to detach and reattach a media to the instance of hls.js to handle mid-rolls for example
DESTROYING: 'hlsDestroying',
// fired when a decrypt key loading starts - data: { frag : fragment object}
KEY_LOADING: 'hlsKeyLoading',
// fired when a decrypt key loading is completed - data: { frag : fragment object, payload : key payload, stats : { trequest, tfirst, tload, length}}
KEY_LOADED: 'hlsKeyLoaded',
// fired upon stream controller state transitions - data: {previousState, nextState}
STREAM_STATE_TRANSITION: 'hlsStreamStateTransition'
};
},{}],33:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* AAC helper
*/
var AAC = function () {
function AAC() {
_classCallCheck(this, AAC);
}
_createClass(AAC, null, [{
key: 'getSilentFrame',
value: function getSilentFrame(codec, channelCount) {
switch (codec) {
case 'mp4a.40.2':
if (channelCount === 1) {
return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x23, 0x80]);
} else if (channelCount === 2) {
return new Uint8Array([0x21, 0x00, 0x49, 0x90, 0x02, 0x19, 0x00, 0x23, 0x80]);
} else if (channelCount === 3) {
return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x8e]);
} else if (channelCount === 4) {
return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x80, 0x2c, 0x80, 0x08, 0x02, 0x38]);
} else if (channelCount === 5) {
return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x38]);
} else if (channelCount === 6) {
return new Uint8Array([0x00, 0xc8, 0x00, 0x80, 0x20, 0x84, 0x01, 0x26, 0x40, 0x08, 0x64, 0x00, 0x82, 0x30, 0x04, 0x99, 0x00, 0x21, 0x90, 0x02, 0x00, 0xb2, 0x00, 0x20, 0x08, 0xe0]);
}
break;
// handle HE-AAC below (mp4a.40.5 / mp4a.40.29)
default:
if (channelCount === 1) {
// ffmpeg -y -f lavfi -i "aevalsrc=0:d=0.05" -c:a libfdk_aac -profile:a aac_he -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x4e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x1c, 0x6, 0xf1, 0xc1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
} else if (channelCount === 2) {
// ffmpeg -y -f lavfi -i "aevalsrc=0|0:d=0.05" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
} else if (channelCount === 3) {
// ffmpeg -y -f lavfi -i "aevalsrc=0|0|0:d=0.05" -c:a libfdk_aac -profile:a aac_he_v2 -b:a 4k output.aac && hexdump -v -e '16/1 "0x%x," "\n"' -v output.aac
return new Uint8Array([0x1, 0x40, 0x22, 0x80, 0xa3, 0x5e, 0xe6, 0x80, 0xba, 0x8, 0x0, 0x0, 0x0, 0x0, 0x95, 0x0, 0x6, 0xf1, 0xa1, 0xa, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5a, 0x5e]);
}
break;
}
return null;
}
}]);
return AAC;
}();
exports.default = AAC;
},{}],34:[function(_dereq_,module,exports){
"use strict";
/**
* Buffer Helper utils, providing methods dealing buffer length retrieval
*/
var BufferHelper = {
isBuffered: function isBuffered(media, position) {
if (media) {
var buffered = media.buffered;
for (var i = 0; i < buffered.length; i++) {
if (position >= buffered.start(i) && position <= buffered.end(i)) {
return true;
}
}
}
return false;
},
bufferInfo: function bufferInfo(media, pos, maxHoleDuration) {
if (media) {
var vbuffered = media.buffered,
buffered = [],
i;
for (i = 0; i < vbuffered.length; i++) {
buffered.push({ start: vbuffered.start(i), end: vbuffered.end(i) });
}
return this.bufferedInfo(buffered, pos, maxHoleDuration);
} else {
return { len: 0, start: pos, end: pos, nextStart: undefined };
}
},
bufferedInfo: function bufferedInfo(buffered, pos, maxHoleDuration) {
var buffered2 = [],
// bufferStart and bufferEnd are buffer boundaries around current video position
bufferLen,
bufferStart,
bufferEnd,
bufferStartNext,
i;
// sort on buffer.start/smaller end (IE does not always return sorted buffered range)
buffered.sort(function (a, b) {
var diff = a.start - b.start;
if (diff) {
return diff;
} else {
return b.end - a.end;
}
});
// there might be some small holes between buffer time range
// consider that holes smaller than maxHoleDuration are irrelevant and build another
// buffer time range representations that discards those holes
for (i = 0; i < buffered.length; i++) {
var buf2len = buffered2.length;
if (buf2len) {
var buf2end = buffered2[buf2len - 1].end;
// if small hole (value between 0 or maxHoleDuration ) or overlapping (negative)
if (buffered[i].start - buf2end < maxHoleDuration) {
// merge overlapping time ranges
// update lastRange.end only if smaller than item.end
// e.g. [ 1, 15] with [ 2,8] => [ 1,15] (no need to modify lastRange.end)
// whereas [ 1, 8] with [ 2,15] => [ 1,15] ( lastRange should switch from [1,8] to [1,15])
if (buffered[i].end > buf2end) {
buffered2[buf2len - 1].end = buffered[i].end;
}
} else {
// big hole
buffered2.push(buffered[i]);
}
} else {
// first value
buffered2.push(buffered[i]);
}
}
for (i = 0, bufferLen = 0, bufferStart = bufferEnd = pos; i < buffered2.length; i++) {
var start = buffered2[i].start,
end = buffered2[i].end;
//logger.log('buf start/end:' + buffered.start(i) + '/' + buffered.end(i));
if (pos + maxHoleDuration >= start && pos < end) {
// play position is inside this buffer TimeRange, retrieve end of buffer position and buffer length
bufferStart = start;
bufferEnd = end;
bufferLen = bufferEnd - pos;
} else if (pos + maxHoleDuration < start) {
bufferStartNext = start;
break;
}
}
return { len: bufferLen, start: bufferStart, end: bufferEnd, nextStart: bufferStartNext };
}
};
module.exports = BufferHelper;
},{}],35:[function(_dereq_,module,exports){
'use strict';
var _logger = _dereq_(50);
var LevelHelper = {
mergeDetails: function mergeDetails(oldDetails, newDetails) {
var start = Math.max(oldDetails.startSN, newDetails.startSN) - newDetails.startSN,
end = Math.min(oldDetails.endSN, newDetails.endSN) - newDetails.startSN,
delta = newDetails.startSN - oldDetails.startSN,
oldfragments = oldDetails.fragments,
newfragments = newDetails.fragments,
ccOffset = 0,
PTSFrag;
// check if old/new playlists have fragments in common
if (end < start) {
newDetails.PTSKnown = false;
return;
}
// loop through overlapping SN and update startPTS , cc, and duration if any found
for (var i = start; i <= end; i++) {
var oldFrag = oldfragments[delta + i],
newFrag = newfragments[i];
if (newFrag && oldFrag) {
ccOffset = oldFrag.cc - newFrag.cc;
if (!isNaN(oldFrag.startPTS)) {
newFrag.start = newFrag.startPTS = oldFrag.startPTS;
newFrag.endPTS = oldFrag.endPTS;
newFrag.duration = oldFrag.duration;
PTSFrag = newFrag;
}
}
}
if (ccOffset) {
_logger.logger.log('discontinuity sliding from playlist, take drift into account');
for (i = 0; i < newfragments.length; i++) {
newfragments[i].cc += ccOffset;
}
}
// if at least one fragment contains PTS info, recompute PTS information for all fragments
if (PTSFrag) {
LevelHelper.updateFragPTSDTS(newDetails, PTSFrag.sn, PTSFrag.startPTS, PTSFrag.endPTS, PTSFrag.startDTS, PTSFrag.endDTS);
} else {
// ensure that delta is within oldfragments range
// also adjust sliding in case delta is 0 (we could have old=[50-60] and new=old=[50-61])
// in that case we also need to adjust start offset of all fragments
if (delta >= 0 && delta < oldfragments.length) {
// adjust start by sliding offset
var sliding = oldfragments[delta].start;
for (i = 0; i < newfragments.length; i++) {
newfragments[i].start += sliding;
}
}
}
// if we are here, it means we have fragments overlapping between
// old and new level. reliable PTS info is thus relying on old level
newDetails.PTSKnown = oldDetails.PTSKnown;
return;
},
updateFragPTSDTS: function updateFragPTSDTS(details, sn, startPTS, endPTS, startDTS, endDTS) {
var fragIdx, fragments, frag, i;
// exit if sn out of range
if (!details || sn < details.startSN || sn > details.endSN) {
return 0;
}
fragIdx = sn - details.startSN;
fragments = details.fragments;
frag = fragments[fragIdx];
if (!isNaN(frag.startPTS)) {
// delta PTS between audio and video
var deltaPTS = Math.abs(frag.startPTS - startPTS);
if (isNaN(frag.deltaPTS)) {
frag.deltaPTS = deltaPTS;
} else {
frag.deltaPTS = Math.max(deltaPTS, frag.deltaPTS);
}
startPTS = Math.min(startPTS, frag.startPTS);
endPTS = Math.max(endPTS, frag.endPTS);
startDTS = Math.min(startDTS, frag.startDTS);
endDTS = Math.max(endDTS, frag.endDTS);
}
var drift = startPTS - frag.start;
frag.start = frag.startPTS = startPTS;
frag.endPTS = endPTS;
frag.startDTS = startDTS;
frag.endDTS = endDTS;
frag.duration = endPTS - startPTS;
// adjust fragment PTS/duration from seqnum-1 to frag 0
for (i = fragIdx; i > 0; i--) {
LevelHelper.updatePTS(fragments, i, i - 1);
}
// adjust fragment PTS/duration from seqnum to last frag
for (i = fragIdx; i < fragments.length - 1; i++) {
LevelHelper.updatePTS(fragments, i, i + 1);
}
details.PTSKnown = true;
//logger.log(` frag start/end:${startPTS.toFixed(3)}/${endPTS.toFixed(3)}`);
return drift;
},
updatePTS: function updatePTS(fragments, fromIdx, toIdx) {
var fragFrom = fragments[fromIdx],
fragTo = fragments[toIdx],
fragToPTS = fragTo.startPTS;
// if we know startPTS[toIdx]
if (!isNaN(fragToPTS)) {
// update fragment duration.
// it helps to fix drifts between playlist reported duration and fragment real duration
if (toIdx > fromIdx) {
fragFrom.duration = fragToPTS - fragFrom.start;
if (fragFrom.duration < 0) {
_logger.logger.warn('negative duration computed for frag ' + fragFrom.sn + ',level ' + fragFrom.level + ', there should be some duration drift between playlist and fragment!');
}
} else {
fragTo.duration = fragFrom.start - fragToPTS;
if (fragTo.duration < 0) {
_logger.logger.warn('negative duration computed for frag ' + fragTo.sn + ',level ' + fragTo.level + ', there should be some duration drift between playlist and fragment!');
}
}
} else {
// we dont know startPTS[toIdx]
if (toIdx > fromIdx) {
fragTo.start = fragFrom.start + fragFrom.duration;
} else {
fragTo.start = fragFrom.start - fragTo.duration;
}
}
}
}; /**
* Level Helper class, providing methods dealing with playlist sliding and drift
*/
module.exports = LevelHelper;
},{"50":50}],36:[function(_dereq_,module,exports){
/**
* HLS interface
*/
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _urlToolkit = _dereq_(2);
var _urlToolkit2 = _interopRequireDefault(_urlToolkit);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _errors = _dereq_(30);
var _playlistLoader = _dereq_(40);
var _playlistLoader2 = _interopRequireDefault(_playlistLoader);
var _fragmentLoader = _dereq_(38);
var _fragmentLoader2 = _interopRequireDefault(_fragmentLoader);
var _keyLoader = _dereq_(39);
var _keyLoader2 = _interopRequireDefault(_keyLoader);
var _streamController = _dereq_(12);
var _streamController2 = _interopRequireDefault(_streamController);
var _levelController = _dereq_(11);
var _levelController2 = _interopRequireDefault(_levelController);
var _logger = _dereq_(50);
var _events3 = _dereq_(1);
var _events4 = _interopRequireDefault(_events3);
var _config = _dereq_(4);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Hls = function () {
_createClass(Hls, null, [{
key: 'isSupported',
value: function isSupported() {
window.MediaSource = window.MediaSource || window.WebKitMediaSource;
return window.MediaSource && typeof window.MediaSource.isTypeSupported === 'function' && window.MediaSource.isTypeSupported('video/mp4; codecs="avc1.42E01E,mp4a.40.2"');
}
}, {
key: 'version',
get: function get() {
// replaced with browserify-versionify transform
return '0.7.5';
}
}, {
key: 'Events',
get: function get() {
return _events2.default;
}
}, {
key: 'ErrorTypes',
get: function get() {
return _errors.ErrorTypes;
}
}, {
key: 'ErrorDetails',
get: function get() {
return _errors.ErrorDetails;
}
}, {
key: 'DefaultConfig',
get: function get() {
if (!Hls.defaultConfig) {
return _config.hlsDefaultConfig;
}
return Hls.defaultConfig;
},
set: function set(defaultConfig) {
Hls.defaultConfig = defaultConfig;
}
}]);
function Hls() {
var _this = this;
var config = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
_classCallCheck(this, Hls);
var defaultConfig = Hls.DefaultConfig;
if ((config.liveSyncDurationCount || config.liveMaxLatencyDurationCount) && (config.liveSyncDuration || config.liveMaxLatencyDuration)) {
throw new Error('Illegal hls.js config: don\'t mix up liveSyncDurationCount/liveMaxLatencyDurationCount and liveSyncDuration/liveMaxLatencyDuration');
}
for (var prop in defaultConfig) {
if (prop in config) {
continue;
}
config[prop] = defaultConfig[prop];
}
if (config.liveMaxLatencyDurationCount !== undefined && config.liveMaxLatencyDurationCount <= config.liveSyncDurationCount) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDurationCount" must be gt "liveSyncDurationCount"');
}
if (config.liveMaxLatencyDuration !== undefined && (config.liveMaxLatencyDuration <= config.liveSyncDuration || config.liveSyncDuration === undefined)) {
throw new Error('Illegal hls.js config: "liveMaxLatencyDuration" must be gt "liveSyncDuration"');
}
(0, _logger.enableLogs)(config.debug);
this.config = config;
this._autoLevelCapping = -1;
// observer setup
var observer = this.observer = new _events4.default();
observer.trigger = function trigger(event) {
for (var _len = arguments.length, data = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
data[_key - 1] = arguments[_key];
}
observer.emit.apply(observer, [event, event].concat(data));
};
observer.off = function off(event) {
for (var _len2 = arguments.length, data = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
data[_key2 - 1] = arguments[_key2];
}
observer.removeListener.apply(observer, [event].concat(data));
};
this.on = observer.on.bind(observer);
this.off = observer.off.bind(observer);
this.trigger = observer.trigger.bind(observer);
// core controllers and network loaders
var abrController = this.abrController = new config.abrController(this);
var bufferController = new config.bufferController(this);
var capLevelController = new config.capLevelController(this);
var fpsController = new config.fpsController(this);
var playListLoader = new _playlistLoader2.default(this);
var fragmentLoader = new _fragmentLoader2.default(this);
var keyLoader = new _keyLoader2.default(this);
// network controllers
var levelController = this.levelController = new _levelController2.default(this);
var streamController = this.streamController = new _streamController2.default(this);
var networkControllers = [levelController, streamController];
// optional audio stream controller
var Controller = config.audioStreamController;
if (Controller) {
networkControllers.push(new Controller(this));
}
this.networkControllers = networkControllers;
var coreComponents = [playListLoader, fragmentLoader, keyLoader, abrController, bufferController, capLevelController, fpsController];
// optional audio track and subtitle controller
Controller = config.audioTrackController;
if (Controller) {
var audioTrackController = new Controller(this);
this.audioTrackController = audioTrackController;
coreComponents.push(audioTrackController);
}
Controller = config.subtitleTrackController;
if (Controller) {
var subtitleTrackController = new Controller(this);
this.subtitleTrackController = subtitleTrackController;
coreComponents.push(subtitleTrackController);
}
// optional subtitle controller
[config.subtitleStreamController, config.timelineController].forEach(function (Controller) {
if (Controller) {
coreComponents.push(new Controller(_this));
}
});
this.coreComponents = coreComponents;
}
_createClass(Hls, [{
key: 'destroy',
value: function destroy() {
_logger.logger.log('destroy');
this.trigger(_events2.default.DESTROYING);
this.detachMedia();
this.coreComponents.concat(this.networkControllers).forEach(function (component) {
component.destroy();
});
this.url = null;
this.observer.removeAllListeners();
this._autoLevelCapping = -1;
}
}, {
key: 'attachMedia',
value: function attachMedia(media) {
_logger.logger.log('attachMedia');
this.media = media;
this.trigger(_events2.default.MEDIA_ATTACHING, { media: media });
}
}, {
key: 'detachMedia',
value: function detachMedia() {
_logger.logger.log('detachMedia');
this.trigger(_events2.default.MEDIA_DETACHING);
this.media = null;
}
}, {
key: 'loadSource',
value: function loadSource(url) {
url = _urlToolkit2.default.buildAbsoluteURL(window.location.href, url, { alwaysNormalize: true });
_logger.logger.log('loadSource:' + url);
this.url = url;
// when attaching to a source URL, trigger a playlist load
this.trigger(_events2.default.MANIFEST_LOADING, { url: url });
}
}, {
key: 'startLoad',
value: function startLoad() {
var startPosition = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : -1;
_logger.logger.log('startLoad(' + startPosition + ')');
this.networkControllers.forEach(function (controller) {
controller.startLoad(startPosition);
});
}
}, {
key: 'stopLoad',
value: function stopLoad() {
_logger.logger.log('stopLoad');
this.networkControllers.forEach(function (controller) {
controller.stopLoad();
});
}
}, {
key: 'swapAudioCodec',
value: function swapAudioCodec() {
_logger.logger.log('swapAudioCodec');
this.streamController.swapAudioCodec();
}
}, {
key: 'recoverMediaError',
value: function recoverMediaError() {
_logger.logger.log('recoverMediaError');
var media = this.media;
this.detachMedia();
this.attachMedia(media);
}
/** Return all quality levels **/
}, {
key: 'levels',
get: function get() {
return this.levelController.levels;
}
/** Return current playback quality level **/
}, {
key: 'currentLevel',
get: function get() {
return this.streamController.currentLevel;
}
/* set quality level immediately (-1 for automatic level selection) */
,
set: function set(newLevel) {
_logger.logger.log('set currentLevel:' + newLevel);
this.loadLevel = newLevel;
this.streamController.immediateLevelSwitch();
}
/** Return next playback quality level (quality level of next fragment) **/
}, {
key: 'nextLevel',
get: function get() {
return this.streamController.nextLevel;
}
/* set quality level for next fragment (-1 for automatic level selection) */
,
set: function set(newLevel) {
_logger.logger.log('set nextLevel:' + newLevel);
this.levelController.manualLevel = newLevel;
this.streamController.nextLevelSwitch();
}
/** Return the quality level of current/last loaded fragment **/
}, {
key: 'loadLevel',
get: function get() {
return this.levelController.level;
}
/* set quality level for current/next loaded fragment (-1 for automatic level selection) */
,
set: function set(newLevel) {
_logger.logger.log('set loadLevel:' + newLevel);
this.levelController.manualLevel = newLevel;
}
/** Return the quality level of next loaded fragment **/
}, {
key: 'nextLoadLevel',
get: function get() {
return this.levelController.nextLoadLevel;
}
/** set quality level of next loaded fragment **/
,
set: function set(level) {
this.levelController.nextLoadLevel = level;
}
/** Return first level (index of first level referenced in manifest)
**/
}, {
key: 'firstLevel',
get: function get() {
return Math.max(this.levelController.firstLevel, this.minAutoLevel);
}
/** set first level (index of first level referenced in manifest)
**/
,
set: function set(newLevel) {
_logger.logger.log('set firstLevel:' + newLevel);
this.levelController.firstLevel = newLevel;
}
/** Return start level (level of first fragment that will be played back)
if not overrided by user, first level appearing in manifest will be used as start level
if -1 : automatic start level selection, playback will start from level matching download bandwidth (determined from download of first segment)
**/
}, {
key: 'startLevel',
get: function get() {
return this.levelController.startLevel;
}
/** set start level (level of first fragment that will be played back)
if not overrided by user, first level appearing in manifest will be used as start level
if -1 : automatic start level selection, playback will start from level matching download bandwidth (determined from download of first segment)
**/
,
set: function set(newLevel) {
_logger.logger.log('set startLevel:' + newLevel);
var hls = this;
// if not in automatic start level detection, ensure startLevel is greater than minAutoLevel
if (newLevel !== -1) {
newLevel = Math.max(newLevel, hls.minAutoLevel);
}
hls.levelController.startLevel = newLevel;
}
/** Return the capping/max level value that could be used by automatic level selection algorithm **/
}, {
key: 'autoLevelCapping',
get: function get() {
return this._autoLevelCapping;
}
/** set the capping/max level value that could be used by automatic level selection algorithm **/
,
set: function set(newLevel) {
_logger.logger.log('set autoLevelCapping:' + newLevel);
this._autoLevelCapping = newLevel;
}
/* check if we are in automatic level selection mode */
}, {
key: 'autoLevelEnabled',
get: function get() {
return this.levelController.manualLevel === -1;
}
/* return manual level */
}, {
key: 'manualLevel',
get: function get() {
return this.levelController.manualLevel;
}
/* return min level selectable in auto mode according to config.minAutoBitrate */
}, {
key: 'minAutoLevel',
get: function get() {
var hls = this,
levels = hls.levels,
minAutoBitrate = hls.config.minAutoBitrate,
len = levels ? levels.length : 0;
for (var i = 0; i < len; i++) {
var levelNextBitrate = levels[i].realBitrate ? Math.max(levels[i].realBitrate, levels[i].bitrate) : levels[i].bitrate;
if (levelNextBitrate > minAutoBitrate) {
return i;
}
}
return 0;
}
/* return max level selectable in auto mode according to autoLevelCapping */
}, {
key: 'maxAutoLevel',
get: function get() {
var hls = this;
var levels = hls.levels;
var autoLevelCapping = hls.autoLevelCapping;
var maxAutoLevel = void 0;
if (autoLevelCapping === -1 && levels && levels.length) {
maxAutoLevel = levels.length - 1;
} else {
maxAutoLevel = autoLevelCapping;
}
return maxAutoLevel;
}
// return next auto level
}, {
key: 'nextAutoLevel',
get: function get() {
var hls = this;
// ensure next auto level is between min and max auto level
return Math.min(Math.max(hls.abrController.nextAutoLevel, hls.minAutoLevel), hls.maxAutoLevel);
}
// this setter is used to force next auto level
// this is useful to force a switch down in auto mode : in case of load error on level N, hls.js can set nextAutoLevel to N-1 for example)
// forced value is valid for one fragment. upon succesful frag loading at forced level, this value will be resetted to -1 by ABR controller
,
set: function set(nextLevel) {
var hls = this;
hls.abrController.nextAutoLevel = Math.max(hls.minAutoLevel, nextLevel);
}
/** get alternate audio tracks list from playlist **/
}, {
key: 'audioTracks',
get: function get() {
var audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTracks : [];
}
/** get index of the selected audio track (index in audio track lists) **/
}, {
key: 'audioTrack',
get: function get() {
var audioTrackController = this.audioTrackController;
return audioTrackController ? audioTrackController.audioTrack : -1;
}
/** select an audio track, based on its index in audio track lists**/
,
set: function set(audioTrackId) {
var audioTrackController = this.audioTrackController;
if (audioTrackController) {
audioTrackController.audioTrack = audioTrackId;
}
}
}, {
key: 'liveSyncPosition',
get: function get() {
return this.streamController.liveSyncPosition;
}
/** get alternate subtitle tracks list from playlist **/
}, {
key: 'subtitleTracks',
get: function get() {
var subtitleTrackController = this.subtitleTrackController;
return subtitleTrackController ? subtitleTrackController.subtitleTracks : [];
}
/** get index of the selected subtitle track (index in subtitle track lists) **/
}, {
key: 'subtitleTrack',
get: function get() {
var subtitleTrackController = this.subtitleTrackController;
return subtitleTrackController ? subtitleTrackController.subtitleTrack : -1;
}
/** select an subtitle track, based on its index in subtitle track lists**/
,
set: function set(subtitleTrackId) {
var subtitleTrackController = this.subtitleTrackController;
if (subtitleTrackController) {
subtitleTrackController.subtitleTrack = subtitleTrackId;
}
}
}]);
return Hls;
}();
exports.default = Hls;
},{"1":1,"11":11,"12":12,"2":2,"30":30,"32":32,"38":38,"39":39,"4":4,"40":40,"50":50}],37:[function(_dereq_,module,exports){
'use strict';
// This is mostly for support of the es6 module export
// syntax with the babel compiler, it looks like it doesnt support
// function exports like we are used to in node/commonjs
module.exports = _dereq_(36).default;
},{"36":36}],38:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Fragment Loader
*/
var FragmentLoader = function (_EventHandler) {
_inherits(FragmentLoader, _EventHandler);
function FragmentLoader(hls) {
_classCallCheck(this, FragmentLoader);
var _this = _possibleConstructorReturn(this, (FragmentLoader.__proto__ || Object.getPrototypeOf(FragmentLoader)).call(this, hls, _events2.default.FRAG_LOADING));
_this.loaders = {};
return _this;
}
_createClass(FragmentLoader, [{
key: 'destroy',
value: function destroy() {
var loaders = this.loaders;
for (var loaderName in loaders) {
var loader = loaders[loaderName];
if (loader) {
loader.destroy();
}
}
this.loaders = {};
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onFragLoading',
value: function onFragLoading(data) {
var frag = data.frag,
type = frag.type,
loader = this.loaders[type],
config = this.hls.config;
frag.loaded = 0;
if (loader) {
_logger.logger.warn('abort previous fragment loader for type:' + type);
loader.abort();
}
loader = this.loaders[type] = frag.loader = typeof config.fLoader !== 'undefined' ? new config.fLoader(config) : new config.loader(config);
var loaderContext = void 0,
loaderConfig = void 0,
loaderCallbacks = void 0;
loaderContext = { url: frag.url, frag: frag, responseType: 'arraybuffer', progressData: false };
var start = frag.byteRangeStartOffset,
end = frag.byteRangeEndOffset;
if (!isNaN(start) && !isNaN(end)) {
loaderContext.rangeStart = start;
loaderContext.rangeEnd = end;
}
loaderConfig = { timeout: config.fragLoadingTimeOut, maxRetry: 0, retryDelay: 0, maxRetryDelay: config.fragLoadingMaxRetryTimeout };
loaderCallbacks = { onSuccess: this.loadsuccess.bind(this), onError: this.loaderror.bind(this), onTimeout: this.loadtimeout.bind(this), onProgress: this.loadprogress.bind(this) };
loader.load(loaderContext, loaderConfig, loaderCallbacks);
}
}, {
key: 'loadsuccess',
value: function loadsuccess(response, stats, context) {
var payload = response.data,
frag = context.frag;
// detach fragment loader on load success
frag.loader = undefined;
this.loaders[frag.type] = undefined;
this.hls.trigger(_events2.default.FRAG_LOADED, { payload: payload, frag: frag, stats: stats });
}
}, {
key: 'loaderror',
value: function loaderror(response, context) {
var loader = context.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.FRAG_LOAD_ERROR, fatal: false, frag: context.frag, response: response });
}
}, {
key: 'loadtimeout',
value: function loadtimeout(stats, context) {
var loader = context.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.FRAG_LOAD_TIMEOUT, fatal: false, frag: context.frag });
}
// data will be used for progressive parsing
}, {
key: 'loadprogress',
value: function loadprogress(stats, context, data) {
// jshint ignore:line
var frag = context.frag;
frag.loaded = stats.loaded;
this.hls.trigger(_events2.default.FRAG_LOAD_PROGRESS, { frag: frag, stats: stats });
}
}]);
return FragmentLoader;
}(_eventHandler2.default);
exports.default = FragmentLoader;
},{"30":30,"31":31,"32":32,"50":50}],39:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _errors = _dereq_(30);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /*
* Decrypt key Loader
*/
var KeyLoader = function (_EventHandler) {
_inherits(KeyLoader, _EventHandler);
function KeyLoader(hls) {
_classCallCheck(this, KeyLoader);
var _this = _possibleConstructorReturn(this, (KeyLoader.__proto__ || Object.getPrototypeOf(KeyLoader)).call(this, hls, _events2.default.KEY_LOADING));
_this.loaders = {};
_this.decryptkey = null;
_this.decrypturl = null;
return _this;
}
_createClass(KeyLoader, [{
key: 'destroy',
value: function destroy() {
for (var loaderName in this.loaders) {
var loader = this.loaders[loaderName];
if (loader) {
loader.destroy();
}
}
this.loaders = {};
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onKeyLoading',
value: function onKeyLoading(data) {
var frag = data.frag,
type = frag.type,
loader = this.loaders[type],
decryptdata = frag.decryptdata,
uri = decryptdata.uri;
// if uri is different from previous one or if decrypt key not retrieved yet
if (uri !== this.decrypturl || this.decryptkey === null) {
var config = this.hls.config;
if (loader) {
_logger.logger.warn('abort previous key loader for type:' + type);
loader.abort();
}
frag.loader = this.loaders[type] = new config.loader(config);
this.decrypturl = uri;
this.decryptkey = null;
var loaderContext = void 0,
loaderConfig = void 0,
loaderCallbacks = void 0;
loaderContext = { url: uri, frag: frag, responseType: 'arraybuffer' };
loaderConfig = { timeout: config.fragLoadingTimeOut, maxRetry: config.fragLoadingMaxRetry, retryDelay: config.fragLoadingRetryDelay, maxRetryDelay: config.fragLoadingMaxRetryTimeout };
loaderCallbacks = { onSuccess: this.loadsuccess.bind(this), onError: this.loaderror.bind(this), onTimeout: this.loadtimeout.bind(this) };
frag.loader.load(loaderContext, loaderConfig, loaderCallbacks);
} else if (this.decryptkey) {
// we already loaded this key, return it
decryptdata.key = this.decryptkey;
this.hls.trigger(_events2.default.KEY_LOADED, { frag: frag });
}
}
}, {
key: 'loadsuccess',
value: function loadsuccess(response, stats, context) {
var frag = context.frag;
this.decryptkey = frag.decryptdata.key = new Uint8Array(response.data);
// detach fragment loader on load success
frag.loader = undefined;
this.loaders[frag.type] = undefined;
this.hls.trigger(_events2.default.KEY_LOADED, { frag: frag });
}
}, {
key: 'loaderror',
value: function loaderror(response, context) {
var frag = context.frag,
loader = frag.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.KEY_LOAD_ERROR, fatal: false, frag: frag, response: response });
}
}, {
key: 'loadtimeout',
value: function loadtimeout(stats, context) {
var frag = context.frag,
loader = frag.loader;
if (loader) {
loader.abort();
}
this.loaders[context.type] = undefined;
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.KEY_LOAD_TIMEOUT, fatal: false, frag: frag });
}
}]);
return KeyLoader;
}(_eventHandler2.default);
exports.default = KeyLoader;
},{"30":30,"31":31,"32":32,"50":50}],40:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* Playlist Loader
*/
var _urlToolkit = _dereq_(2);
var _urlToolkit2 = _interopRequireDefault(_urlToolkit);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _eventHandler = _dereq_(31);
var _eventHandler2 = _interopRequireDefault(_eventHandler);
var _errors = _dereq_(30);
var _attrList = _dereq_(44);
var _attrList2 = _interopRequireDefault(_attrList);
var _logger = _dereq_(50);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
// https://regex101.com is your friend
var MASTER_PLAYLIST_REGEX = /#EXT-X-STREAM-INF:([^\n\r]*)[\r\n]+([^\r\n]+)/g;
var MASTER_PLAYLIST_MEDIA_REGEX = /#EXT-X-MEDIA:(.*)/g;
var LEVEL_PLAYLIST_REGEX_FAST = /#EXTINF:(\d*(?:\.\d+)?)(?:,(.*))?|(?!#)(\S.+)|#EXT-X-BYTERANGE: *(.+)|#EXT-X-PROGRAM-DATE-TIME:(.+)|#.*/g;
var LEVEL_PLAYLIST_REGEX_SLOW = /(?:(?:#(EXTM3U))|(?:#EXT-X-(PLAYLIST-TYPE):(.+))|(?:#EXT-X-(MEDIA-SEQUENCE): *(\d+))|(?:#EXT-X-(TARGETDURATION): *(\d+))|(?:#EXT-X-(KEY):(.+))|(?:#EXT-X-(START):(.+))|(?:#EXT-X-(ENDLIST))|(?:#EXT-X-(DISCONTINUITY-SEQ)UENCE:(\d+))|(?:#EXT-X-(DIS)CONTINUITY))|(?:#EXT-X-(VERSION):(\d+))|(?:#EXT-X-(MAP):(.+))|(?:(#)(.*):(.*))|(?:(#)(.*))(?:.*)\r?\n?/;
var LevelKey = function () {
function LevelKey() {
_classCallCheck(this, LevelKey);
this.method = null;
this.key = null;
this.iv = null;
this._uri = null;
}
_createClass(LevelKey, [{
key: 'uri',
get: function get() {
if (!this._uri && this.reluri) {
this._uri = _urlToolkit2.default.buildAbsoluteURL(this.baseuri, this.reluri, { alwaysNormalize: true });
}
return this._uri;
}
}]);
return LevelKey;
}();
var Fragment = function () {
function Fragment() {
_classCallCheck(this, Fragment);
this._url = null;
this._byteRange = null;
this._decryptdata = null;
this.tagList = [];
}
_createClass(Fragment, [{
key: 'createInitializationVector',
/**
* Utility method for parseLevelPlaylist to create an initialization vector for a given segment
* @returns {Uint8Array}
*/
value: function createInitializationVector(segmentNumber) {
var uint8View = new Uint8Array(16);
for (var i = 12; i < 16; i++) {
uint8View[i] = segmentNumber >> 8 * (15 - i) & 0xff;
}
return uint8View;
}
/**
* Utility method for parseLevelPlaylist to get a fragment's decryption data from the currently parsed encryption key data
* @param levelkey - a playlist's encryption info
* @param segmentNumber - the fragment's segment number
* @returns {*} - an object to be applied as a fragment's decryptdata
*/
}, {
key: 'fragmentDecryptdataFromLevelkey',
value: function fragmentDecryptdataFromLevelkey(levelkey, segmentNumber) {
var decryptdata = levelkey;
if (levelkey && levelkey.method && levelkey.uri && !levelkey.iv) {
decryptdata = new LevelKey();
decryptdata.method = levelkey.method;
decryptdata.baseuri = levelkey.baseuri;
decryptdata.reluri = levelkey.reluri;
decryptdata.iv = this.createInitializationVector(segmentNumber);
}
return decryptdata;
}
}, {
key: 'cloneObj',
value: function cloneObj(obj) {
return JSON.parse(JSON.stringify(obj));
}
}, {
key: 'url',
get: function get() {
if (!this._url && this.relurl) {
this._url = _urlToolkit2.default.buildAbsoluteURL(this.baseurl, this.relurl, { alwaysNormalize: true });
}
return this._url;
},
set: function set(value) {
this._url = value;
}
}, {
key: 'programDateTime',
get: function get() {
if (!this._programDateTime && this.rawProgramDateTime) {
this._programDateTime = new Date(Date.parse(this.rawProgramDateTime));
}
return this._programDateTime;
}
}, {
key: 'byteRange',
get: function get() {
if (!this._byteRange) {
var byteRange = this._byteRange = [];
if (this.rawByteRange) {
var params = this.rawByteRange.split('@', 2);
if (params.length === 1) {
var lastByteRangeEndOffset = this.lastByteRangeEndOffset;
byteRange[0] = lastByteRangeEndOffset ? lastByteRangeEndOffset : 0;
} else {
byteRange[0] = parseInt(params[1]);
}
byteRange[1] = parseInt(params[0]) + byteRange[0];
}
}
return this._byteRange;
}
}, {
key: 'byteRangeStartOffset',
get: function get() {
return this.byteRange[0];
}
}, {
key: 'byteRangeEndOffset',
get: function get() {
return this.byteRange[1];
}
}, {
key: 'decryptdata',
get: function get() {
if (!this._decryptdata) {
this._decryptdata = this.fragmentDecryptdataFromLevelkey(this.levelkey, this.sn);
}
return this._decryptdata;
}
}]);
return Fragment;
}();
var PlaylistLoader = function (_EventHandler) {
_inherits(PlaylistLoader, _EventHandler);
function PlaylistLoader(hls) {
_classCallCheck(this, PlaylistLoader);
var _this = _possibleConstructorReturn(this, (PlaylistLoader.__proto__ || Object.getPrototypeOf(PlaylistLoader)).call(this, hls, _events2.default.MANIFEST_LOADING, _events2.default.LEVEL_LOADING, _events2.default.AUDIO_TRACK_LOADING, _events2.default.SUBTITLE_TRACK_LOADING));
_this.loaders = {};
return _this;
}
_createClass(PlaylistLoader, [{
key: 'destroy',
value: function destroy() {
for (var loaderName in this.loaders) {
var loader = this.loaders[loaderName];
if (loader) {
loader.destroy();
}
}
this.loaders = {};
_eventHandler2.default.prototype.destroy.call(this);
}
}, {
key: 'onManifestLoading',
value: function onManifestLoading(data) {
this.load(data.url, { type: 'manifest' });
}
}, {
key: 'onLevelLoading',
value: function onLevelLoading(data) {
this.load(data.url, { type: 'level', level: data.level, id: data.id });
}
}, {
key: 'onAudioTrackLoading',
value: function onAudioTrackLoading(data) {
this.load(data.url, { type: 'audioTrack', id: data.id });
}
}, {
key: 'onSubtitleTrackLoading',
value: function onSubtitleTrackLoading(data) {
this.load(data.url, { type: 'subtitleTrack', id: data.id });
}
}, {
key: 'load',
value: function load(url, context) {
var loader = this.loaders[context.type];
if (loader) {
var loaderContext = loader.context;
if (loaderContext && loaderContext.url === url) {
_logger.logger.trace('playlist request ongoing');
return;
} else {
_logger.logger.warn('abort previous loader for type:' + context.type);
loader.abort();
}
}
var config = this.hls.config,
retry = void 0,
timeout = void 0,
retryDelay = void 0,
maxRetryDelay = void 0;
if (context.type === 'manifest') {
retry = config.manifestLoadingMaxRetry;
timeout = config.manifestLoadingTimeOut;
retryDelay = config.manifestLoadingRetryDelay;
maxRetryDelay = config.manifestLoadingMaxRetryTimeout;
} else {
retry = config.levelLoadingMaxRetry;
timeout = config.levelLoadingTimeOut;
retryDelay = config.levelLoadingRetryDelay;
maxRetryDelay = config.levelLoadingMaxRetryTimeout;
_logger.logger.log('loading playlist for ' + context.type + ' ' + (context.level || context.id));
}
loader = this.loaders[context.type] = context.loader = typeof config.pLoader !== 'undefined' ? new config.pLoader(config) : new config.loader(config);
context.url = url;
context.responseType = '';
var loaderConfig = void 0,
loaderCallbacks = void 0;
loaderConfig = { timeout: timeout, maxRetry: retry, retryDelay: retryDelay, maxRetryDelay: maxRetryDelay };
loaderCallbacks = { onSuccess: this.loadsuccess.bind(this), onError: this.loaderror.bind(this), onTimeout: this.loadtimeout.bind(this) };
loader.load(context, loaderConfig, loaderCallbacks);
}
}, {
key: 'resolve',
value: function resolve(url, baseUrl) {
return _urlToolkit2.default.buildAbsoluteURL(baseUrl, url, { alwaysNormalize: true });
}
}, {
key: 'parseMasterPlaylist',
value: function parseMasterPlaylist(string, baseurl) {
var levels = [],
result = void 0;
MASTER_PLAYLIST_REGEX.lastIndex = 0;
while ((result = MASTER_PLAYLIST_REGEX.exec(string)) != null) {
var level = {};
var attrs = level.attrs = new _attrList2.default(result[1]);
level.url = this.resolve(result[2], baseurl);
var resolution = attrs.decimalResolution('RESOLUTION');
if (resolution) {
level.width = resolution.width;
level.height = resolution.height;
}
level.bitrate = attrs.decimalInteger('AVERAGE-BANDWIDTH') || attrs.decimalInteger('BANDWIDTH');
level.name = attrs.NAME;
var codecs = attrs.CODECS;
if (codecs) {
codecs = codecs.split(/[ ,]+/);
for (var i = 0; i < codecs.length; i++) {
var codec = codecs[i];
if (codec.indexOf('avc1') !== -1) {
level.videoCodec = this.avc1toavcoti(codec);
} else {
level.audioCodec = codec;
}
}
}
levels.push(level);
}
return levels;
}
}, {
key: 'parseMasterPlaylistMedia',
value: function parseMasterPlaylistMedia(string, baseurl, type) {
var result = void 0,
medias = [],
id = 0;
MASTER_PLAYLIST_MEDIA_REGEX.lastIndex = 0;
while ((result = MASTER_PLAYLIST_MEDIA_REGEX.exec(string)) != null) {
var media = {};
var attrs = new _attrList2.default(result[1]);
if (attrs.TYPE === type) {
media.groupId = attrs['GROUP-ID'];
media.name = attrs.NAME;
media.type = type;
media.default = attrs.DEFAULT === 'YES';
media.autoselect = attrs.AUTOSELECT === 'YES';
media.forced = attrs.FORCED === 'YES';
if (attrs.URI) {
media.url = this.resolve(attrs.URI, baseurl);
}
media.lang = attrs.LANGUAGE;
if (!media.name) {
media.name = media.lang;
}
media.id = id++;
medias.push(media);
}
}
return medias;
}
}, {
key: 'avc1toavcoti',
value: function avc1toavcoti(codec) {
var result,
avcdata = codec.split('.');
if (avcdata.length > 2) {
result = avcdata.shift() + '.';
result += parseInt(avcdata.shift()).toString(16);
result += ('000' + parseInt(avcdata.shift()).toString(16)).substr(-4);
} else {
result = codec;
}
return result;
}
}, {
key: 'parseLevelPlaylist',
value: function parseLevelPlaylist(string, baseurl, id, type) {
var currentSN = 0,
totalduration = 0,
level = { type: null, version: null, url: baseurl, fragments: [], live: true, startSN: 0 },
levelkey = new LevelKey(),
cc = 0,
prevFrag = null,
frag = new Fragment(),
result,
i;
LEVEL_PLAYLIST_REGEX_FAST.lastIndex = 0;
while ((result = LEVEL_PLAYLIST_REGEX_FAST.exec(string)) !== null) {
var duration = result[1];
if (duration) {
// INF
frag.duration = parseFloat(duration);
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
var title = (' ' + result[2]).slice(1);
frag.title = title ? title : null;
frag.tagList.push(title ? ['INF', duration, title] : ['INF', duration]);
} else if (result[3]) {
// url
if (!isNaN(frag.duration)) {
var sn = currentSN++;
frag.type = type;
frag.start = totalduration;
frag.levelkey = levelkey;
frag.sn = sn;
frag.level = id;
frag.cc = cc;
frag.baseurl = baseurl;
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
frag.relurl = (' ' + result[3]).slice(1);
level.fragments.push(frag);
prevFrag = frag;
totalduration += frag.duration;
frag = new Fragment();
}
} else if (result[4]) {
// X-BYTERANGE
frag.rawByteRange = (' ' + result[4]).slice(1);
if (prevFrag) {
var lastByteRangeEndOffset = prevFrag.byteRangeEndOffset;
if (lastByteRangeEndOffset) {
frag.lastByteRangeEndOffset = lastByteRangeEndOffset;
}
}
} else if (result[5]) {
// PROGRAM-DATE-TIME
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
frag.rawProgramDateTime = (' ' + result[5]).slice(1);
frag.tagList.push(['PROGRAM-DATE-TIME', frag.rawProgramDateTime]);
} else {
result = result[0].match(LEVEL_PLAYLIST_REGEX_SLOW);
for (i = 1; i < result.length; i++) {
if (result[i] !== undefined) {
break;
}
}
// avoid sliced strings https://github.com/video-dev/hls.js/issues/939
var value1 = (' ' + result[i + 1]).slice(1);
var value2 = (' ' + result[i + 2]).slice(1);
switch (result[i]) {
case '#':
frag.tagList.push(value2 ? [value1, value2] : [value1]);
break;
case 'PLAYLIST-TYPE':
level.type = value1.toUpperCase();
break;
case 'MEDIA-SEQUENCE':
currentSN = level.startSN = parseInt(value1);
break;
case 'TARGETDURATION':
level.targetduration = parseFloat(value1);
break;
case 'VERSION':
level.version = parseInt(value1);
break;
case 'EXTM3U':
break;
case 'ENDLIST':
level.live = false;
break;
case 'DIS':
cc++;
frag.tagList.push(['DIS']);
break;
case 'DISCONTINUITY-SEQ':
cc = parseInt(value1);
break;
case 'KEY':
// https://tools.ietf.org/html/draft-pantos-http-live-streaming-08#section-3.4.4
var decryptparams = value1;
var keyAttrs = new _attrList2.default(decryptparams);
var decryptmethod = keyAttrs.enumeratedString('METHOD'),
decrypturi = keyAttrs.URI,
decryptiv = keyAttrs.hexadecimalInteger('IV');
if (decryptmethod) {
levelkey = new LevelKey();
if (decrypturi && ['AES-128', 'SAMPLE-AES'].indexOf(decryptmethod) >= 0) {
levelkey.method = decryptmethod;
// URI to get the key
levelkey.baseuri = baseurl;
levelkey.reluri = decrypturi;
levelkey.key = null;
// Initialization Vector (IV)
levelkey.iv = decryptiv;
}
}
break;
case 'START':
var startParams = value1;
var startAttrs = new _attrList2.default(startParams);
var startTimeOffset = startAttrs.decimalFloatingPoint('TIME-OFFSET');
//TIME-OFFSET can be 0
if (!isNaN(startTimeOffset)) {
level.startTimeOffset = startTimeOffset;
}
break;
case 'MAP':
var mapAttrs = new _attrList2.default(value1);
frag.relurl = mapAttrs.URI;
frag.rawByteRange = mapAttrs.BYTERANGE;
frag.baseurl = baseurl;
frag.level = id;
frag.type = type;
frag.sn = 'initSegment';
level.initSegment = frag;
frag = new Fragment();
break;
default:
_logger.logger.warn('line parsed but not handled: ' + result);
break;
}
}
}
frag = prevFrag;
//logger.log('found ' + level.fragments.length + ' fragments');
if (frag && !frag.relurl) {
level.fragments.pop();
totalduration -= frag.duration;
}
level.totalduration = totalduration;
level.averagetargetduration = totalduration / level.fragments.length;
level.endSN = currentSN - 1;
return level;
}
}, {
key: 'loadsuccess',
value: function loadsuccess(response, stats, context) {
var string = response.data,
url = response.url,
type = context.type,
id = context.id,
level = context.level,
hls = this.hls;
this.loaders[type] = undefined;
// responseURL not supported on some browsers (it is used to detect URL redirection)
// data-uri mode also not supported (but no need to detect redirection)
if (url === undefined || url.indexOf('data:') === 0) {
// fallback to initial URL
url = context.url;
}
stats.tload = performance.now();
//stats.mtime = new Date(target.getResponseHeader('Last-Modified'));
if (string.indexOf('#EXTM3U') === 0) {
if (string.indexOf('#EXTINF:') > 0) {
var isLevel = type !== 'audioTrack' && type !== 'subtitleTrack',
levelId = !isNaN(level) ? level : !isNaN(id) ? id : 0,
levelDetails = this.parseLevelPlaylist(string, url, levelId, type === 'audioTrack' ? 'audio' : type === 'subtitleTrack' ? 'subtitle' : 'main');
levelDetails.tload = stats.tload;
if (type === 'manifest') {
// first request, stream manifest (no master playlist), fire manifest loaded event with level details
hls.trigger(_events2.default.MANIFEST_LOADED, { levels: [{ url: url, details: levelDetails }], audioTracks: [], url: url, stats: stats });
}
stats.tparsed = performance.now();
if (levelDetails.targetduration) {
if (isLevel) {
hls.trigger(_events2.default.LEVEL_LOADED, { details: levelDetails, level: level || 0, id: id || 0, stats: stats });
} else {
if (type === 'audioTrack') {
hls.trigger(_events2.default.AUDIO_TRACK_LOADED, { details: levelDetails, id: id, stats: stats });
} else if (type === 'subtitleTrack') {
hls.trigger(_events2.default.SUBTITLE_TRACK_LOADED, { details: levelDetails, id: id, stats: stats });
}
}
} else {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.MANIFEST_PARSING_ERROR, fatal: true, url: url, reason: 'invalid targetduration' });
}
} else {
var levels = this.parseMasterPlaylist(string, url);
// multi level playlist, parse level info
if (levels.length) {
var audioTracks = this.parseMasterPlaylistMedia(string, url, 'AUDIO');
var subtitles = this.parseMasterPlaylistMedia(string, url, 'SUBTITLES');
if (audioTracks.length) {
// check if we have found an audio track embedded in main playlist (audio track without URI attribute)
var embeddedAudioFound = false;
audioTracks.forEach(function (audioTrack) {
if (!audioTrack.url) {
embeddedAudioFound = true;
}
});
// if no embedded audio track defined, but audio codec signaled in quality level, we need to signal this main audio track
// this could happen with playlists with alt audio rendition in which quality levels (main) contains both audio+video. but with mixed audio track not signaled
if (embeddedAudioFound === false && levels[0].audioCodec && !levels[0].attrs.AUDIO) {
_logger.logger.log('audio codec signaled in quality level, but no embedded audio track signaled, create one');
audioTracks.unshift({ type: 'main', name: 'main' });
}
}
hls.trigger(_events2.default.MANIFEST_LOADED, { levels: levels, audioTracks: audioTracks, subtitles: subtitles, url: url, stats: stats });
} else {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.MANIFEST_PARSING_ERROR, fatal: true, url: url, reason: 'no level found in manifest' });
}
}
} else {
hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: _errors.ErrorDetails.MANIFEST_PARSING_ERROR, fatal: true, url: url, reason: 'no EXTM3U delimiter' });
}
}
}, {
key: 'loaderror',
value: function loaderror(response, context) {
var details,
fatal,
loader = context.loader;
switch (context.type) {
case 'manifest':
details = _errors.ErrorDetails.MANIFEST_LOAD_ERROR;
fatal = true;
break;
case 'level':
details = _errors.ErrorDetails.LEVEL_LOAD_ERROR;
fatal = false;
break;
case 'audioTrack':
details = _errors.ErrorDetails.AUDIO_TRACK_LOAD_ERROR;
fatal = false;
break;
}
if (loader) {
loader.abort();
this.loaders[context.type] = undefined;
}
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: details, fatal: fatal, url: loader.url, loader: loader, response: response, context: context });
}
}, {
key: 'loadtimeout',
value: function loadtimeout(stats, context) {
var details,
fatal,
loader = context.loader;
switch (context.type) {
case 'manifest':
details = _errors.ErrorDetails.MANIFEST_LOAD_TIMEOUT;
fatal = true;
break;
case 'level':
details = _errors.ErrorDetails.LEVEL_LOAD_TIMEOUT;
fatal = false;
break;
case 'audioTrack':
details = _errors.ErrorDetails.AUDIO_TRACK_LOAD_TIMEOUT;
fatal = false;
break;
}
if (loader) {
loader.abort();
this.loaders[context.type] = undefined;
}
this.hls.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.NETWORK_ERROR, details: details, fatal: fatal, url: loader.url, loader: loader, context: context });
}
}]);
return PlaylistLoader;
}(_eventHandler2.default);
exports.default = PlaylistLoader;
},{"2":2,"30":30,"31":31,"32":32,"44":44,"50":50}],41:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
* Generate MP4 Box
*/
//import Hex from '../utils/hex';
var UINT32_MAX = Math.pow(2, 32) - 1;
var MP4 = function () {
function MP4() {
_classCallCheck(this, MP4);
}
_createClass(MP4, null, [{
key: 'init',
value: function init() {
MP4.types = {
avc1: [], // codingname
avcC: [],
btrt: [],
dinf: [],
dref: [],
esds: [],
ftyp: [],
hdlr: [],
mdat: [],
mdhd: [],
mdia: [],
mfhd: [],
minf: [],
moof: [],
moov: [],
mp4a: [],
'.mp3': [],
mvex: [],
mvhd: [],
pasp: [],
sdtp: [],
stbl: [],
stco: [],
stsc: [],
stsd: [],
stsz: [],
stts: [],
tfdt: [],
tfhd: [],
traf: [],
trak: [],
trun: [],
trex: [],
tkhd: [],
vmhd: [],
smhd: []
};
var i;
for (i in MP4.types) {
if (MP4.types.hasOwnProperty(i)) {
MP4.types[i] = [i.charCodeAt(0), i.charCodeAt(1), i.charCodeAt(2), i.charCodeAt(3)];
}
}
var videoHdlr = new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // pre_defined
0x76, 0x69, 0x64, 0x65, // handler_type: 'vide'
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x56, 0x69, 0x64, 0x65, 0x6f, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'VideoHandler'
]);
var audioHdlr = new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // pre_defined
0x73, 0x6f, 0x75, 0x6e, // handler_type: 'soun'
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x53, 0x6f, 0x75, 0x6e, 0x64, 0x48, 0x61, 0x6e, 0x64, 0x6c, 0x65, 0x72, 0x00 // name: 'SoundHandler'
]);
MP4.HDLR_TYPES = {
'video': videoHdlr,
'audio': audioHdlr
};
var dref = new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01, // entry_count
0x00, 0x00, 0x00, 0x0c, // entry_size
0x75, 0x72, 0x6c, 0x20, // 'url' type
0x00, // version 0
0x00, 0x00, 0x01 // entry_flags
]);
var stco = new Uint8Array([0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00 // entry_count
]);
MP4.STTS = MP4.STSC = MP4.STCO = stco;
MP4.STSZ = new Uint8Array([0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, // sample_size
0x00, 0x00, 0x00, 0x00]);
MP4.VMHD = new Uint8Array([0x00, // version
0x00, 0x00, 0x01, // flags
0x00, 0x00, // graphicsmode
0x00, 0x00, 0x00, 0x00, 0x00, 0x00 // opcolor
]);
MP4.SMHD = new Uint8Array([0x00, // version
0x00, 0x00, 0x00, // flags
0x00, 0x00, // balance
0x00, 0x00 // reserved
]);
MP4.STSD = new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x01]); // entry_count
var majorBrand = new Uint8Array([105, 115, 111, 109]); // isom
var avc1Brand = new Uint8Array([97, 118, 99, 49]); // avc1
var minorVersion = new Uint8Array([0, 0, 0, 1]);
MP4.FTYP = MP4.box(MP4.types.ftyp, majorBrand, minorVersion, majorBrand, avc1Brand);
MP4.DINF = MP4.box(MP4.types.dinf, MP4.box(MP4.types.dref, dref));
}
}, {
key: 'box',
value: function box(type) {
var payload = Array.prototype.slice.call(arguments, 1),
size = 8,
i = payload.length,
len = i,
result;
// calculate the total size we need to allocate
while (i--) {
size += payload[i].byteLength;
}
result = new Uint8Array(size);
result[0] = size >> 24 & 0xff;
result[1] = size >> 16 & 0xff;
result[2] = size >> 8 & 0xff;
result[3] = size & 0xff;
result.set(type, 4);
// copy the payload into the result
for (i = 0, size = 8; i < len; i++) {
// copy payload[i] array @ offset size
result.set(payload[i], size);
size += payload[i].byteLength;
}
return result;
}
}, {
key: 'hdlr',
value: function hdlr(type) {
return MP4.box(MP4.types.hdlr, MP4.HDLR_TYPES[type]);
}
}, {
key: 'mdat',
value: function mdat(data) {
return MP4.box(MP4.types.mdat, data);
}
}, {
key: 'mdhd',
value: function mdhd(timescale, duration) {
duration *= timescale;
var upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
var lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
return MP4.box(MP4.types.mdhd, new Uint8Array([0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, // modification_time
timescale >> 24 & 0xFF, timescale >> 16 & 0xFF, timescale >> 8 & 0xFF, timescale & 0xFF, // timescale
upperWordDuration >> 24, upperWordDuration >> 16 & 0xFF, upperWordDuration >> 8 & 0xFF, upperWordDuration & 0xFF, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xFF, lowerWordDuration >> 8 & 0xFF, lowerWordDuration & 0xFF, 0x55, 0xc4, // 'und' language (undetermined)
0x00, 0x00]));
}
}, {
key: 'mdia',
value: function mdia(track) {
return MP4.box(MP4.types.mdia, MP4.mdhd(track.timescale, track.duration), MP4.hdlr(track.type), MP4.minf(track));
}
}, {
key: 'mfhd',
value: function mfhd(sequenceNumber) {
return MP4.box(MP4.types.mfhd, new Uint8Array([0x00, 0x00, 0x00, 0x00, // flags
sequenceNumber >> 24, sequenceNumber >> 16 & 0xFF, sequenceNumber >> 8 & 0xFF, sequenceNumber & 0xFF]));
}
}, {
key: 'minf',
value: function minf(track) {
if (track.type === 'audio') {
return MP4.box(MP4.types.minf, MP4.box(MP4.types.smhd, MP4.SMHD), MP4.DINF, MP4.stbl(track));
} else {
return MP4.box(MP4.types.minf, MP4.box(MP4.types.vmhd, MP4.VMHD), MP4.DINF, MP4.stbl(track));
}
}
}, {
key: 'moof',
value: function moof(sn, baseMediaDecodeTime, track) {
return MP4.box(MP4.types.moof, MP4.mfhd(sn), MP4.traf(track, baseMediaDecodeTime));
}
/**
* @param tracks... (optional) {array} the tracks associated with this movie
*/
}, {
key: 'moov',
value: function moov(tracks) {
var i = tracks.length,
boxes = [];
while (i--) {
boxes[i] = MP4.trak(tracks[i]);
}
return MP4.box.apply(null, [MP4.types.moov, MP4.mvhd(tracks[0].timescale, tracks[0].duration)].concat(boxes).concat(MP4.mvex(tracks)));
}
}, {
key: 'mvex',
value: function mvex(tracks) {
var i = tracks.length,
boxes = [];
while (i--) {
boxes[i] = MP4.trex(tracks[i]);
}
return MP4.box.apply(null, [MP4.types.mvex].concat(boxes));
}
}, {
key: 'mvhd',
value: function mvhd(timescale, duration) {
duration *= timescale;
var upperWordDuration = Math.floor(duration / (UINT32_MAX + 1));
var lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
var bytes = new Uint8Array([0x01, // version 1
0x00, 0x00, 0x00, // flags
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, // modification_time
timescale >> 24 & 0xFF, timescale >> 16 & 0xFF, timescale >> 8 & 0xFF, timescale & 0xFF, // timescale
upperWordDuration >> 24, upperWordDuration >> 16 & 0xFF, upperWordDuration >> 8 & 0xFF, upperWordDuration & 0xFF, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xFF, lowerWordDuration >> 8 & 0xFF, lowerWordDuration & 0xFF, 0x00, 0x01, 0x00, 0x00, // 1.0 rate
0x01, 0x00, // 1.0 volume
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined
0xff, 0xff, 0xff, 0xff // next_track_ID
]);
return MP4.box(MP4.types.mvhd, bytes);
}
}, {
key: 'sdtp',
value: function sdtp(track) {
var samples = track.samples || [],
bytes = new Uint8Array(4 + samples.length),
flags,
i;
// leave the full box header (4 bytes) all zero
// write the sample table
for (i = 0; i < samples.length; i++) {
flags = samples[i].flags;
bytes[i + 4] = flags.dependsOn << 4 | flags.isDependedOn << 2 | flags.hasRedundancy;
}
return MP4.box(MP4.types.sdtp, bytes);
}
}, {
key: 'stbl',
value: function stbl(track) {
return MP4.box(MP4.types.stbl, MP4.stsd(track), MP4.box(MP4.types.stts, MP4.STTS), MP4.box(MP4.types.stsc, MP4.STSC), MP4.box(MP4.types.stsz, MP4.STSZ), MP4.box(MP4.types.stco, MP4.STCO));
}
}, {
key: 'avc1',
value: function avc1(track) {
var sps = [],
pps = [],
i,
data,
len;
// assemble the SPSs
for (i = 0; i < track.sps.length; i++) {
data = track.sps[i];
len = data.byteLength;
sps.push(len >>> 8 & 0xFF);
sps.push(len & 0xFF);
sps = sps.concat(Array.prototype.slice.call(data)); // SPS
}
// assemble the PPSs
for (i = 0; i < track.pps.length; i++) {
data = track.pps[i];
len = data.byteLength;
pps.push(len >>> 8 & 0xFF);
pps.push(len & 0xFF);
pps = pps.concat(Array.prototype.slice.call(data));
}
var avcc = MP4.box(MP4.types.avcC, new Uint8Array([0x01, // version
sps[3], // profile
sps[4], // profile compat
sps[5], // level
0xfc | 3, // lengthSizeMinusOne, hard-coded to 4 bytes
0xE0 | track.sps.length // 3bit reserved (111) + numOfSequenceParameterSets
].concat(sps).concat([track.pps.length // numOfPictureParameterSets
]).concat(pps))),
// "PPS"
width = track.width,
height = track.height,
hSpacing = track.pixelRatio[0],
vSpacing = track.pixelRatio[1];
//console.log('avcc:' + Hex.hexDump(avcc));
return MP4.box(MP4.types.avc1, new Uint8Array([0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
0x00, 0x00, // pre_defined
0x00, 0x00, // reserved
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // pre_defined
width >> 8 & 0xFF, width & 0xff, // width
height >> 8 & 0xFF, height & 0xff, // height
0x00, 0x48, 0x00, 0x00, // horizresolution
0x00, 0x48, 0x00, 0x00, // vertresolution
0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x01, // frame_count
0x12, 0x64, 0x61, 0x69, 0x6C, //dailymotion/hls.js
0x79, 0x6D, 0x6F, 0x74, 0x69, 0x6F, 0x6E, 0x2F, 0x68, 0x6C, 0x73, 0x2E, 0x6A, 0x73, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // compressorname
0x00, 0x18, // depth = 24
0x11, 0x11]), // pre_defined = -1
avcc, MP4.box(MP4.types.btrt, new Uint8Array([0x00, 0x1c, 0x9c, 0x80, // bufferSizeDB
0x00, 0x2d, 0xc6, 0xc0, // maxBitrate
0x00, 0x2d, 0xc6, 0xc0])), // avgBitrate
MP4.box(MP4.types.pasp, new Uint8Array([hSpacing >> 24, // hSpacing
hSpacing >> 16 & 0xFF, hSpacing >> 8 & 0xFF, hSpacing & 0xFF, vSpacing >> 24, // vSpacing
vSpacing >> 16 & 0xFF, vSpacing >> 8 & 0xFF, vSpacing & 0xFF])));
}
}, {
key: 'esds',
value: function esds(track) {
var configlen = track.config.length;
return new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
0x03, // descriptor_type
0x17 + configlen, // length
0x00, 0x01, //es_id
0x00, // stream_priority
0x04, // descriptor_type
0x0f + configlen, // length
0x40, //codec : mpeg4_audio
0x15, // stream_type
0x00, 0x00, 0x00, // buffer_size
0x00, 0x00, 0x00, 0x00, // maxBitrate
0x00, 0x00, 0x00, 0x00, // avgBitrate
0x05 // descriptor_type
].concat([configlen]).concat(track.config).concat([0x06, 0x01, 0x02])); // GASpecificConfig)); // length + audio config descriptor
}
}, {
key: 'mp4a',
value: function mp4a(track) {
var samplerate = track.samplerate;
return MP4.box(MP4.types.mp4a, new Uint8Array([0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved
0x00, track.channelCount, // channelcount
0x00, 0x10, // sampleSize:16bits
0x00, 0x00, 0x00, 0x00, // reserved2
samplerate >> 8 & 0xFF, samplerate & 0xff, //
0x00, 0x00]), MP4.box(MP4.types.esds, MP4.esds(track)));
}
}, {
key: 'mp3',
value: function mp3(track) {
var samplerate = track.samplerate;
return MP4.box(MP4.types['.mp3'], new Uint8Array([0x00, 0x00, 0x00, // reserved
0x00, 0x00, 0x00, // reserved
0x00, 0x01, // data_reference_index
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved
0x00, track.channelCount, // channelcount
0x00, 0x10, // sampleSize:16bits
0x00, 0x00, 0x00, 0x00, // reserved2
samplerate >> 8 & 0xFF, samplerate & 0xff, //
0x00, 0x00]));
}
}, {
key: 'stsd',
value: function stsd(track) {
if (track.type === 'audio') {
if (!track.isAAC && track.codec === 'mp3') {
return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp3(track));
}
return MP4.box(MP4.types.stsd, MP4.STSD, MP4.mp4a(track));
} else {
return MP4.box(MP4.types.stsd, MP4.STSD, MP4.avc1(track));
}
}
}, {
key: 'tkhd',
value: function tkhd(track) {
var id = track.id,
duration = track.duration * track.timescale,
width = track.width,
height = track.height,
upperWordDuration = Math.floor(duration / (UINT32_MAX + 1)),
lowerWordDuration = Math.floor(duration % (UINT32_MAX + 1));
return MP4.box(MP4.types.tkhd, new Uint8Array([0x01, // version 1
0x00, 0x00, 0x07, // flags
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, // creation_time
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, // modification_time
id >> 24 & 0xFF, id >> 16 & 0xFF, id >> 8 & 0xFF, id & 0xFF, // track_ID
0x00, 0x00, 0x00, 0x00, // reserved
upperWordDuration >> 24, upperWordDuration >> 16 & 0xFF, upperWordDuration >> 8 & 0xFF, upperWordDuration & 0xFF, lowerWordDuration >> 24, lowerWordDuration >> 16 & 0xFF, lowerWordDuration >> 8 & 0xFF, lowerWordDuration & 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // reserved
0x00, 0x00, // layer
0x00, 0x00, // alternate_group
0x00, 0x00, // non-audio track volume
0x00, 0x00, // reserved
0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, // transformation: unity matrix
width >> 8 & 0xFF, width & 0xFF, 0x00, 0x00, // width
height >> 8 & 0xFF, height & 0xFF, 0x00, 0x00 // height
]));
}
}, {
key: 'traf',
value: function traf(track, baseMediaDecodeTime) {
var sampleDependencyTable = MP4.sdtp(track),
id = track.id,
upperWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime / (UINT32_MAX + 1)),
lowerWordBaseMediaDecodeTime = Math.floor(baseMediaDecodeTime % (UINT32_MAX + 1));
return MP4.box(MP4.types.traf, MP4.box(MP4.types.tfhd, new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
id >> 24, id >> 16 & 0XFF, id >> 8 & 0XFF, id & 0xFF])), MP4.box(MP4.types.tfdt, new Uint8Array([0x01, // version 1
0x00, 0x00, 0x00, // flags
upperWordBaseMediaDecodeTime >> 24, upperWordBaseMediaDecodeTime >> 16 & 0XFF, upperWordBaseMediaDecodeTime >> 8 & 0XFF, upperWordBaseMediaDecodeTime & 0xFF, lowerWordBaseMediaDecodeTime >> 24, lowerWordBaseMediaDecodeTime >> 16 & 0XFF, lowerWordBaseMediaDecodeTime >> 8 & 0XFF, lowerWordBaseMediaDecodeTime & 0xFF])), MP4.trun(track, sampleDependencyTable.length + 16 + // tfhd
20 + // tfdt
8 + // traf header
16 + // mfhd
8 + // moof header
8), // mdat header
sampleDependencyTable);
}
/**
* Generate a track box.
* @param track {object} a track definition
* @return {Uint8Array} the track box
*/
}, {
key: 'trak',
value: function trak(track) {
track.duration = track.duration || 0xffffffff;
return MP4.box(MP4.types.trak, MP4.tkhd(track), MP4.mdia(track));
}
}, {
key: 'trex',
value: function trex(track) {
var id = track.id;
return MP4.box(MP4.types.trex, new Uint8Array([0x00, // version 0
0x00, 0x00, 0x00, // flags
id >> 24, id >> 16 & 0XFF, id >> 8 & 0XFF, id & 0xFF, // track_ID
0x00, 0x00, 0x00, 0x01, // default_sample_description_index
0x00, 0x00, 0x00, 0x00, // default_sample_duration
0x00, 0x00, 0x00, 0x00, // default_sample_size
0x00, 0x01, 0x00, 0x01 // default_sample_flags
]));
}
}, {
key: 'trun',
value: function trun(track, offset) {
var samples = track.samples || [],
len = samples.length,
arraylen = 12 + 16 * len,
array = new Uint8Array(arraylen),
i,
sample,
duration,
size,
flags,
cts;
offset += 8 + arraylen;
array.set([0x00, // version 0
0x00, 0x0f, 0x01, // flags
len >>> 24 & 0xFF, len >>> 16 & 0xFF, len >>> 8 & 0xFF, len & 0xFF, // sample_count
offset >>> 24 & 0xFF, offset >>> 16 & 0xFF, offset >>> 8 & 0xFF, offset & 0xFF // data_offset
], 0);
for (i = 0; i < len; i++) {
sample = samples[i];
duration = sample.duration;
size = sample.size;
flags = sample.flags;
cts = sample.cts;
array.set([duration >>> 24 & 0xFF, duration >>> 16 & 0xFF, duration >>> 8 & 0xFF, duration & 0xFF, // sample_duration
size >>> 24 & 0xFF, size >>> 16 & 0xFF, size >>> 8 & 0xFF, size & 0xFF, // sample_size
flags.isLeading << 2 | flags.dependsOn, flags.isDependedOn << 6 | flags.hasRedundancy << 4 | flags.paddingValue << 1 | flags.isNonSync, flags.degradPrio & 0xF0 << 8, flags.degradPrio & 0x0F, // sample_flags
cts >>> 24 & 0xFF, cts >>> 16 & 0xFF, cts >>> 8 & 0xFF, cts & 0xFF // sample_composition_time_offset
], 12 + 16 * i);
}
return MP4.box(MP4.types.trun, array);
}
}, {
key: 'initSegment',
value: function initSegment(tracks) {
if (!MP4.types) {
MP4.init();
}
var movie = MP4.moov(tracks),
result;
result = new Uint8Array(MP4.FTYP.byteLength + movie.byteLength);
result.set(MP4.FTYP);
result.set(movie, MP4.FTYP.byteLength);
return result;
}
}]);
return MP4;
}();
exports.default = MP4;
},{}],42:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* fMP4 remuxer
*/
var _aac = _dereq_(33);
var _aac2 = _interopRequireDefault(_aac);
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
var _logger = _dereq_(50);
var _mp4Generator = _dereq_(41);
var _mp4Generator2 = _interopRequireDefault(_mp4Generator);
var _errors = _dereq_(30);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var MP4Remuxer = function () {
function MP4Remuxer(observer, config, typeSupported, vendor) {
_classCallCheck(this, MP4Remuxer);
this.observer = observer;
this.config = config;
this.typeSupported = typeSupported;
var userAgent = navigator.userAgent;
this.isSafari = vendor && vendor.indexOf('Apple') > -1 && userAgent && !userAgent.match('CriOS');
this.ISGenerated = false;
}
_createClass(MP4Remuxer, [{
key: 'destroy',
value: function destroy() {}
}, {
key: 'resetTimeStamp',
value: function resetTimeStamp(defaultTimeStamp) {
this._initPTS = this._initDTS = defaultTimeStamp;
}
}, {
key: 'resetInitSegment',
value: function resetInitSegment() {
this.ISGenerated = false;
}
}, {
key: 'remux',
value: function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset) {
// generate Init Segment if needed
if (!this.ISGenerated) {
this.generateIS(audioTrack, videoTrack, timeOffset);
}
if (this.ISGenerated) {
// Purposefully remuxing audio before video, so that remuxVideo can use nextAudioPts, which is
// calculated in remuxAudio.
//logger.log('nb AAC samples:' + audioTrack.samples.length);
if (audioTrack.samples.length) {
var audioData = this.remuxAudio(audioTrack, timeOffset, contiguous, accurateTimeOffset);
//logger.log('nb AVC samples:' + videoTrack.samples.length);
if (videoTrack.samples.length) {
var audioTrackLength = void 0;
if (audioData) {
audioTrackLength = audioData.endPTS - audioData.startPTS;
}
this.remuxVideo(videoTrack, timeOffset, contiguous, audioTrackLength);
}
} else {
var videoData = void 0;
//logger.log('nb AVC samples:' + videoTrack.samples.length);
if (videoTrack.samples.length) {
videoData = this.remuxVideo(videoTrack, timeOffset, contiguous);
}
if (videoData && audioTrack.codec) {
this.remuxEmptyAudio(audioTrack, timeOffset, contiguous, videoData);
}
}
}
//logger.log('nb ID3 samples:' + audioTrack.samples.length);
if (id3Track.samples.length) {
this.remuxID3(id3Track, timeOffset);
}
//logger.log('nb ID3 samples:' + audioTrack.samples.length);
if (textTrack.samples.length) {
this.remuxText(textTrack, timeOffset);
}
//notify end of parsing
this.observer.trigger(_events2.default.FRAG_PARSED);
}
}, {
key: 'generateIS',
value: function generateIS(audioTrack, videoTrack, timeOffset) {
var observer = this.observer,
audioSamples = audioTrack.samples,
videoSamples = videoTrack.samples,
typeSupported = this.typeSupported,
container = 'audio/mp4',
tracks = {},
data = { tracks: tracks },
computePTSDTS = this._initPTS === undefined,
initPTS,
initDTS;
if (computePTSDTS) {
initPTS = initDTS = Infinity;
}
if (audioTrack.config && audioSamples.length) {
// let's use audio sampling rate as MP4 time scale.
// rationale is that there is a integer nb of audio frames per audio sample (1024 for AAC)
// using audio sampling rate here helps having an integer MP4 frame duration
// this avoids potential rounding issue and AV sync issue
audioTrack.timescale = audioTrack.samplerate;
_logger.logger.log('audio sampling rate : ' + audioTrack.samplerate);
if (!audioTrack.isAAC) {
if (typeSupported.mpeg) {
// Chrome and Safari
container = 'audio/mpeg';
audioTrack.codec = '';
} else if (typeSupported.mp3) {
// Firefox
audioTrack.codec = 'mp3';
}
}
tracks.audio = {
container: container,
codec: audioTrack.codec,
initSegment: !audioTrack.isAAC && typeSupported.mpeg ? new Uint8Array() : _mp4Generator2.default.initSegment([audioTrack]),
metadata: {
channelCount: audioTrack.channelCount
}
};
if (computePTSDTS) {
// remember first PTS of this demuxing context. for audio, PTS = DTS
initPTS = initDTS = audioSamples[0].pts - audioTrack.inputTimeScale * timeOffset;
}
}
if (videoTrack.sps && videoTrack.pps && videoSamples.length) {
// let's use input time scale as MP4 video timescale
// we use input time scale straight away to avoid rounding issues on frame duration / cts computation
var inputTimeScale = videoTrack.inputTimeScale;
videoTrack.timescale = inputTimeScale;
tracks.video = {
container: 'video/mp4',
codec: videoTrack.codec,
initSegment: _mp4Generator2.default.initSegment([videoTrack]),
metadata: {
width: videoTrack.width,
height: videoTrack.height
}
};
if (computePTSDTS) {
initPTS = Math.min(initPTS, videoSamples[0].pts - inputTimeScale * timeOffset);
initDTS = Math.min(initDTS, videoSamples[0].dts - inputTimeScale * timeOffset);
this.observer.trigger(_events2.default.INIT_PTS_FOUND, { initPTS: initPTS });
}
}
if (Object.keys(tracks).length) {
observer.trigger(_events2.default.FRAG_PARSING_INIT_SEGMENT, data);
this.ISGenerated = true;
if (computePTSDTS) {
this._initPTS = initPTS;
this._initDTS = initDTS;
}
} else {
observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MEDIA_ERROR, details: _errors.ErrorDetails.FRAG_PARSING_ERROR, fatal: false, reason: 'no audio/video samples found' });
}
}
}, {
key: 'remuxVideo',
value: function remuxVideo(track, timeOffset, contiguous, audioTrackLength) {
var offset = 8,
timeScale = track.timescale,
mp4SampleDuration,
mdat,
moof,
firstPTS,
firstDTS,
nextDTS,
lastPTS,
lastDTS,
inputSamples = track.samples,
outputSamples = [],
nbSamples = inputSamples.length,
ptsNormalize = this._PTSNormalize,
initDTS = this._initDTS;
// for (let i = 0; i < track.samples.length; i++) {
// let avcSample = track.samples[i];
// let units = avcSample.units;
// let unitsString = '';
// for (let j = 0; j < units.length ; j++) {
// unitsString += units[j].type + ',';
// if (units[j].data.length < 500) {
// unitsString += Hex.hexDump(units[j].data);
// }
// }
// logger.log(avcSample.pts + '/' + avcSample.dts + ',' + unitsString + avcSample.units.length);
// }
// sort video samples by DTS then PTS then demux id order
inputSamples.sort(function (a, b) {
var deltadts = a.dts - b.dts;
var deltapts = a.pts - b.pts;
return deltadts ? deltadts : deltapts ? deltapts : a.id - b.id;
});
// handle broken streams with PTS < DTS, tolerance up 200ms (18000 in 90kHz timescale)
var PTSDTSshift = inputSamples.reduce(function (prev, curr) {
return Math.max(Math.min(prev, curr.pts - curr.dts), -18000);
}, 0);
if (PTSDTSshift < 0) {
_logger.logger.warn('PTS < DTS detected in video samples, shifting DTS by ' + Math.round(PTSDTSshift / 90) + ' ms to overcome this issue');
for (var i = 0; i < inputSamples.length; i++) {
inputSamples[i].dts += PTSDTSshift;
}
}
// PTS is coded on 33bits, and can loop from -2^32 to 2^32
// ptsNormalize will make PTS/DTS value monotonic, we use last known DTS value as reference value
var nextAvcDts = void 0;
// contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
if (contiguous) {
// if parsed fragment is contiguous with last one, let's use last DTS value as reference
nextAvcDts = this.nextAvcDts;
} else {
// if not contiguous, let's use target timeOffset
nextAvcDts = timeOffset * timeScale;
}
// compute first DTS and last DTS, normalize them against reference value
var sample = inputSamples[0];
firstDTS = Math.max(ptsNormalize(sample.dts - initDTS, nextAvcDts), 0);
firstPTS = Math.max(ptsNormalize(sample.pts - initDTS, nextAvcDts), 0);
// check timestamp continuity accross consecutive fragments (this is to remove inter-fragment gap/hole)
var delta = Math.round((firstDTS - nextAvcDts) / 90);
// if fragment are contiguous, detect hole/overlapping between fragments
if (contiguous) {
if (delta) {
if (delta > 1) {
_logger.logger.log('AVC:' + delta + ' ms hole between fragments detected,filling it');
} else if (delta < -1) {
_logger.logger.log('AVC:' + -delta + ' ms overlapping between fragments detected');
}
// remove hole/gap : set DTS to next expected DTS
firstDTS = nextAvcDts;
inputSamples[0].dts = firstDTS + initDTS;
// offset PTS as well, ensure that PTS is smaller or equal than new DTS
firstPTS = Math.max(firstPTS - delta, nextAvcDts);
inputSamples[0].pts = firstPTS + initDTS;
_logger.logger.log('Video/PTS/DTS adjusted: ' + Math.round(firstPTS / 90) + '/' + Math.round(firstDTS / 90) + ',delta:' + delta + ' ms');
}
}
nextDTS = firstDTS;
// compute lastPTS/lastDTS
sample = inputSamples[inputSamples.length - 1];
lastDTS = Math.max(ptsNormalize(sample.dts - initDTS, nextAvcDts), 0);
lastPTS = Math.max(ptsNormalize(sample.pts - initDTS, nextAvcDts), 0);
lastPTS = Math.max(lastPTS, lastDTS);
var isSafari = this.isSafari;
// on Safari let's signal the same sample duration for all samples
// sample duration (as expected by trun MP4 boxes), should be the delta between sample DTS
// set this constant duration as being the avg delta between consecutive DTS.
if (isSafari) {
mp4SampleDuration = Math.round((lastDTS - firstDTS) / (inputSamples.length - 1));
}
var nbNalu = 0,
naluLen = 0;
for (var _i = 0; _i < nbSamples; _i++) {
// compute total/avc sample length and nb of NAL units
var _sample = inputSamples[_i],
units = _sample.units,
nbUnits = units.length,
sampleLen = 0;
for (var j = 0; j < nbUnits; j++) {
sampleLen += units[j].data.length;
}
naluLen += sampleLen;
nbNalu += nbUnits;
_sample.length = sampleLen;
// normalize PTS/DTS
if (isSafari) {
// sample DTS is computed using a constant decoding offset (mp4SampleDuration) between samples
_sample.dts = firstDTS + _i * mp4SampleDuration;
} else {
// ensure sample monotonic DTS
_sample.dts = Math.max(ptsNormalize(_sample.dts - initDTS, nextAvcDts), firstDTS);
}
// we normalize PTS against nextAvcDts, we also substract initDTS (some streams don't start @ PTS O)
// and we ensure that computed value is greater or equal than sample DTS
_sample.pts = Math.max(ptsNormalize(_sample.pts - initDTS, nextAvcDts), _sample.dts);
}
/* concatenate the video data and construct the mdat in place
(need 8 more bytes to fill length and mpdat type) */
var mdatSize = naluLen + 4 * nbNalu + 8;
try {
mdat = new Uint8Array(mdatSize);
} catch (err) {
this.observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MUX_ERROR, details: _errors.ErrorDetails.REMUX_ALLOC_ERROR, fatal: false, bytes: mdatSize, reason: 'fail allocating video mdat ' + mdatSize });
return;
}
var view = new DataView(mdat.buffer);
view.setUint32(0, mdatSize);
mdat.set(_mp4Generator2.default.types.mdat, 4);
for (var _i2 = 0; _i2 < nbSamples; _i2++) {
var avcSample = inputSamples[_i2],
avcSampleUnits = avcSample.units,
mp4SampleLength = 0,
compositionTimeOffset = void 0;
// convert NALU bitstream to MP4 format (prepend NALU with size field)
for (var _j = 0, _nbUnits = avcSampleUnits.length; _j < _nbUnits; _j++) {
var unit = avcSampleUnits[_j],
unitData = unit.data,
unitDataLen = unit.data.byteLength;
view.setUint32(offset, unitDataLen);
offset += 4;
mdat.set(unitData, offset);
offset += unitDataLen;
mp4SampleLength += 4 + unitDataLen;
}
if (!isSafari) {
// expected sample duration is the Decoding Timestamp diff of consecutive samples
if (_i2 < nbSamples - 1) {
mp4SampleDuration = inputSamples[_i2 + 1].dts - avcSample.dts;
} else {
var config = this.config,
lastFrameDuration = avcSample.dts - inputSamples[_i2 > 0 ? _i2 - 1 : _i2].dts;
if (config.stretchShortVideoTrack) {
// In some cases, a segment's audio track duration may exceed the video track duration.
// Since we've already remuxed audio, and we know how long the audio track is, we look to
// see if the delta to the next segment is longer than the minimum of maxBufferHole and
// maxSeekHole. If so, playback would potentially get stuck, so we artificially inflate
// the duration of the last frame to minimize any potential gap between segments.
var maxBufferHole = config.maxBufferHole,
maxSeekHole = config.maxSeekHole,
gapTolerance = Math.floor(Math.min(maxBufferHole, maxSeekHole) * timeScale),
deltaToFrameEnd = (audioTrackLength ? firstPTS + audioTrackLength * timeScale : this.nextAudioPts) - avcSample.pts;
if (deltaToFrameEnd > gapTolerance) {
// We subtract lastFrameDuration from deltaToFrameEnd to try to prevent any video
// frame overlap. maxBufferHole/maxSeekHole should be >> lastFrameDuration anyway.
mp4SampleDuration = deltaToFrameEnd - lastFrameDuration;
if (mp4SampleDuration < 0) {
mp4SampleDuration = lastFrameDuration;
}
_logger.logger.log('It is approximately ' + deltaToFrameEnd / 90 + ' ms to the next segment; using duration ' + mp4SampleDuration / 90 + ' ms for the last video frame.');
} else {
mp4SampleDuration = lastFrameDuration;
}
} else {
mp4SampleDuration = lastFrameDuration;
}
}
compositionTimeOffset = Math.round(avcSample.pts - avcSample.dts);
} else {
compositionTimeOffset = Math.max(0, mp4SampleDuration * Math.round((avcSample.pts - avcSample.dts) / mp4SampleDuration));
}
//console.log('PTS/DTS/initDTS/normPTS/normDTS/relative PTS : ${avcSample.pts}/${avcSample.dts}/${initDTS}/${ptsnorm}/${dtsnorm}/${(avcSample.pts/4294967296).toFixed(3)}');
outputSamples.push({
size: mp4SampleLength,
// constant duration
duration: mp4SampleDuration,
cts: compositionTimeOffset,
flags: {
isLeading: 0,
isDependedOn: 0,
hasRedundancy: 0,
degradPrio: 0,
dependsOn: avcSample.key ? 2 : 1,
isNonSync: avcSample.key ? 0 : 1
}
});
}
// next AVC sample DTS should be equal to last sample DTS + last sample duration (in PES timescale)
this.nextAvcDts = lastDTS + mp4SampleDuration;
var dropped = track.dropped;
track.len = 0;
track.nbNalu = 0;
track.dropped = 0;
if (outputSamples.length && navigator.userAgent.toLowerCase().indexOf('chrome') > -1) {
var flags = outputSamples[0].flags;
// chrome workaround, mark first sample as being a Random Access Point to avoid sourcebuffer append issue
// https://code.google.com/p/chromium/issues/detail?id=229412
flags.dependsOn = 2;
flags.isNonSync = 0;
}
track.samples = outputSamples;
moof = _mp4Generator2.default.moof(track.sequenceNumber++, firstDTS, track);
track.samples = [];
var data = {
data1: moof,
data2: mdat,
startPTS: firstPTS / timeScale,
endPTS: (lastPTS + mp4SampleDuration) / timeScale,
startDTS: firstDTS / timeScale,
endDTS: this.nextAvcDts / timeScale,
type: 'video',
nb: outputSamples.length,
dropped: dropped
};
this.observer.trigger(_events2.default.FRAG_PARSING_DATA, data);
return data;
}
}, {
key: 'remuxAudio',
value: function remuxAudio(track, timeOffset, contiguous, accurateTimeOffset) {
var inputTimeScale = track.inputTimeScale,
mp4timeScale = track.timescale,
scaleFactor = inputTimeScale / mp4timeScale,
mp4SampleDuration = track.isAAC ? 1024 : 1152,
inputSampleDuration = mp4SampleDuration * scaleFactor,
ptsNormalize = this._PTSNormalize,
initDTS = this._initDTS,
rawMPEG = !track.isAAC && this.typeSupported.mpeg;
var view,
offset = rawMPEG ? 0 : 8,
audioSample,
mp4Sample,
unit,
mdat,
moof,
firstPTS,
firstDTS,
lastDTS,
pts,
dts,
ptsnorm,
dtsnorm,
outputSamples = [],
inputSamples = [],
fillFrame,
newStamp,
nextAudioPts;
track.samples.sort(function (a, b) {
return a.pts - b.pts;
});
inputSamples = track.samples;
// for audio samples, also consider consecutive fragments as being contiguous (even if a level switch occurs),
// for sake of clarity:
// consecutive fragments are frags with
// - less than 100ms gaps between new time offset and next expected PTS OR
// - less than 20 audio frames distance
// contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
// this helps ensuring audio continuity
// and this also avoids audio glitches/cut when switching quality, or reporting wrong duration on first audio frame
nextAudioPts = this.nextAudioPts;
contiguous |= inputSamples.length && nextAudioPts && (Math.abs(timeOffset - nextAudioPts / inputTimeScale) < 0.1 || Math.abs(inputSamples[0].pts - nextAudioPts - initDTS) < 20 * inputSampleDuration);
if (!contiguous) {
// if fragments are not contiguous, let's use timeOffset to compute next Audio PTS
nextAudioPts = timeOffset * inputTimeScale;
}
// If the audio track is missing samples, the frames seem to get "left-shifted" within the
// resulting mp4 segment, causing sync issues and leaving gaps at the end of the audio segment.
// In an effort to prevent this from happening, we inject frames here where there are gaps.
// When possible, we inject a silent frame; when that's not possible, we duplicate the last
// frame.
// only inject/drop audio frames in case time offset is accurate
if (accurateTimeOffset && track.isAAC) {
for (var i = 0, nextPtsNorm = nextAudioPts; i < inputSamples.length;) {
// First, let's see how far off this frame is from where we expect it to be
var sample = inputSamples[i],
ptsNorm = ptsNormalize(sample.pts - initDTS, nextAudioPts),
delta = ptsNorm - nextPtsNorm;
// If we're overlapping by more than a duration, drop this sample
if (delta <= -inputSampleDuration) {
_logger.logger.warn('Dropping 1 audio frame @ ' + (nextPtsNorm / inputTimeScale).toFixed(3) + 's due to ' + Math.abs(1000 * delta / inputTimeScale) + ' ms overlap.');
inputSamples.splice(i, 1);
track.len -= sample.unit.length;
// Don't touch nextPtsNorm or i
}
// Otherwise, if we're more than a frame away from where we should be, insert missing frames
// also only inject silent audio frames if currentTime !== 0 (nextPtsNorm !== 0)
else if (delta >= inputSampleDuration && nextPtsNorm) {
var missing = Math.round(delta / inputSampleDuration);
_logger.logger.warn('Injecting ' + missing + ' audio frame @ ' + (nextPtsNorm / inputTimeScale).toFixed(3) + 's due to ' + 1000 * delta / inputTimeScale + ' ms gap.');
for (var j = 0; j < missing; j++) {
newStamp = nextPtsNorm + initDTS;
newStamp = Math.max(newStamp, initDTS);
fillFrame = _aac2.default.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
_logger.logger.log('Unable to get silent frame for given audio codec; duplicating last frame instead.');
fillFrame = sample.unit.subarray();
}
inputSamples.splice(i, 0, { unit: fillFrame, pts: newStamp, dts: newStamp });
track.len += fillFrame.length;
nextPtsNorm += inputSampleDuration;
i += 1;
}
// Adjust sample to next expected pts
sample.pts = sample.dts = nextPtsNorm + initDTS;
nextPtsNorm += inputSampleDuration;
i += 1;
}
// Otherwise, we're within half a frame duration, so just adjust pts
else {
if (Math.abs(delta) > 0.1 * inputSampleDuration) {
//logger.log(`Invalid frame delta ${Math.round(ptsNorm - nextPtsNorm + inputSampleDuration)} at PTS ${Math.round(ptsNorm / 90)} (should be ${Math.round(inputSampleDuration)}).`);
}
nextPtsNorm += inputSampleDuration;
if (i === 0) {
sample.pts = sample.dts = initDTS + nextAudioPts;
} else {
sample.pts = sample.dts = inputSamples[i - 1].pts + inputSampleDuration;
}
i += 1;
}
}
}
for (var _j2 = 0, _nbSamples = inputSamples.length; _j2 < _nbSamples; _j2++) {
audioSample = inputSamples[_j2];
unit = audioSample.unit;
pts = audioSample.pts - initDTS;
dts = audioSample.dts - initDTS;
//logger.log(`Audio/PTS:${Math.round(pts/90)}`);
// if not first sample
if (lastDTS !== undefined) {
ptsnorm = ptsNormalize(pts, lastDTS);
dtsnorm = ptsNormalize(dts, lastDTS);
mp4Sample.duration = Math.round((dtsnorm - lastDTS) / scaleFactor);
} else {
ptsnorm = ptsNormalize(pts, nextAudioPts);
dtsnorm = ptsNormalize(dts, nextAudioPts);
var _delta = Math.round(1000 * (ptsnorm - nextAudioPts) / inputTimeScale),
numMissingFrames = 0;
// if fragment are contiguous, detect hole/overlapping between fragments
// contiguous fragments are consecutive fragments from same quality level (same level, new SN = old SN + 1)
if (contiguous && track.isAAC) {
// log delta
if (_delta) {
if (_delta > 0) {
numMissingFrames = Math.round((ptsnorm - nextAudioPts) / inputSampleDuration);
_logger.logger.log(_delta + ' ms hole between AAC samples detected,filling it');
if (numMissingFrames > 0) {
fillFrame = _aac2.default.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
fillFrame = unit.subarray();
}
track.len += numMissingFrames * fillFrame.length;
}
// if we have frame overlap, overlapping for more than half a frame duraion
} else if (_delta < -12) {
// drop overlapping audio frames... browser will deal with it
_logger.logger.log(-_delta + ' ms overlapping between AAC samples detected, drop frame');
track.len -= unit.byteLength;
continue;
}
// set PTS/DTS to expected PTS/DTS
ptsnorm = dtsnorm = nextAudioPts;
}
}
// remember first PTS of our audioSamples, ensure value is positive
firstPTS = Math.max(0, ptsnorm);
firstDTS = Math.max(0, dtsnorm);
if (track.len > 0) {
/* concatenate the audio data and construct the mdat in place
(need 8 more bytes to fill length and mdat type) */
var mdatSize = rawMPEG ? track.len : track.len + 8;
try {
mdat = new Uint8Array(mdatSize);
} catch (err) {
this.observer.trigger(_events2.default.ERROR, { type: _errors.ErrorTypes.MUX_ERROR, details: _errors.ErrorDetails.REMUX_ALLOC_ERROR, fatal: false, bytes: mdatSize, reason: 'fail allocating audio mdat ' + mdatSize });
return;
}
if (!rawMPEG) {
view = new DataView(mdat.buffer);
view.setUint32(0, mdatSize);
mdat.set(_mp4Generator2.default.types.mdat, 4);
}
} else {
// no audio samples
return;
}
for (var _i3 = 0; _i3 < numMissingFrames; _i3++) {
newStamp = ptsnorm - (numMissingFrames - _i3) * inputSampleDuration;
fillFrame = _aac2.default.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
if (!fillFrame) {
_logger.logger.log('Unable to get silent frame for given audio codec; duplicating this frame instead.');
fillFrame = unit.subarray();
}
mdat.set(fillFrame, offset);
offset += fillFrame.byteLength;
mp4Sample = {
size: fillFrame.byteLength,
cts: 0,
duration: 1024,
flags: {
isLeading: 0,
isDependedOn: 0,
hasRedundancy: 0,
degradPrio: 0,
dependsOn: 1
}
};
outputSamples.push(mp4Sample);
}
}
mdat.set(unit, offset);
var unitLen = unit.byteLength;
offset += unitLen;
//console.log('PTS/DTS/initDTS/normPTS/normDTS/relative PTS : ${audioSample.pts}/${audioSample.dts}/${initDTS}/${ptsnorm}/${dtsnorm}/${(audioSample.pts/4294967296).toFixed(3)}');
mp4Sample = {
size: unitLen,
cts: 0,
duration: 0,
flags: {
isLeading: 0,
isDependedOn: 0,
hasRedundancy: 0,
degradPrio: 0,
dependsOn: 1
}
};
outputSamples.push(mp4Sample);
lastDTS = dtsnorm;
}
var lastSampleDuration = 0;
var nbSamples = outputSamples.length;
//set last sample duration as being identical to previous sample
if (nbSamples >= 2) {
lastSampleDuration = outputSamples[nbSamples - 2].duration;
mp4Sample.duration = lastSampleDuration;
}
if (nbSamples) {
// next audio sample PTS should be equal to last sample PTS + duration
this.nextAudioPts = ptsnorm + scaleFactor * lastSampleDuration;
//logger.log('Audio/PTS/PTSend:' + audioSample.pts.toFixed(0) + '/' + this.nextAacDts.toFixed(0));
track.len = 0;
track.samples = outputSamples;
if (rawMPEG) {
moof = new Uint8Array();
} else {
moof = _mp4Generator2.default.moof(track.sequenceNumber++, firstDTS / scaleFactor, track);
}
track.samples = [];
var audioData = {
data1: moof,
data2: mdat,
startPTS: firstPTS / inputTimeScale,
endPTS: this.nextAudioPts / inputTimeScale,
startDTS: firstDTS / inputTimeScale,
endDTS: (dtsnorm + scaleFactor * lastSampleDuration) / inputTimeScale,
type: 'audio',
nb: nbSamples
};
this.observer.trigger(_events2.default.FRAG_PARSING_DATA, audioData);
return audioData;
}
return null;
}
}, {
key: 'remuxEmptyAudio',
value: function remuxEmptyAudio(track, timeOffset, contiguous, videoData) {
var inputTimeScale = track.inputTimeScale,
mp4timeScale = track.samplerate ? track.samplerate : inputTimeScale,
scaleFactor = inputTimeScale / mp4timeScale,
nextAudioPts = this.nextAudioPts,
// sync with video's timestamp
startDTS = (nextAudioPts !== undefined ? nextAudioPts : videoData.startDTS * inputTimeScale) + this._initDTS,
endDTS = videoData.endDTS * inputTimeScale + this._initDTS,
// one sample's duration value
sampleDuration = 1024,
frameDuration = scaleFactor * sampleDuration,
// samples count of this segment's duration
nbSamples = Math.ceil((endDTS - startDTS) / frameDuration),
// silent frame
silentFrame = _aac2.default.getSilentFrame(track.manifestCodec || track.codec, track.channelCount);
_logger.logger.warn('remux empty Audio');
// Can't remux if we can't generate a silent frame...
if (!silentFrame) {
_logger.logger.trace('Unable to remuxEmptyAudio since we were unable to get a silent frame for given audio codec!');
return;
}
var samples = [];
for (var i = 0; i < nbSamples; i++) {
var stamp = startDTS + i * frameDuration;
samples.push({ unit: silentFrame, pts: stamp, dts: stamp });
track.len += silentFrame.length;
}
track.samples = samples;
this.remuxAudio(track, timeOffset, contiguous);
}
}, {
key: 'remuxID3',
value: function remuxID3(track, timeOffset) {
var length = track.samples.length,
sample;
var inputTimeScale = track.inputTimeScale;
var initPTS = this._initPTS;
var initDTS = this._initDTS;
// consume samples
if (length) {
for (var index = 0; index < length; index++) {
sample = track.samples[index];
// setting id3 pts, dts to relative time
// using this._initPTS and this._initDTS to calculate relative time
sample.pts = (sample.pts - initPTS) / inputTimeScale;
sample.dts = (sample.dts - initDTS) / inputTimeScale;
}
this.observer.trigger(_events2.default.FRAG_PARSING_METADATA, {
samples: track.samples
});
}
track.samples = [];
timeOffset = timeOffset;
}
}, {
key: 'remuxText',
value: function remuxText(track, timeOffset) {
track.samples.sort(function (a, b) {
return a.pts - b.pts;
});
var length = track.samples.length,
sample;
var inputTimeScale = track.inputTimeScale;
var initPTS = this._initPTS;
// consume samples
if (length) {
for (var index = 0; index < length; index++) {
sample = track.samples[index];
// setting text pts, dts to relative time
// using this._initPTS and this._initDTS to calculate relative time
sample.pts = (sample.pts - initPTS) / inputTimeScale;
}
this.observer.trigger(_events2.default.FRAG_PARSING_USERDATA, {
samples: track.samples
});
}
track.samples = [];
timeOffset = timeOffset;
}
}, {
key: '_PTSNormalize',
value: function _PTSNormalize(value, reference) {
var offset;
if (reference === undefined) {
return value;
}
if (reference < value) {
// - 2^33
offset = -8589934592;
} else {
// + 2^33
offset = 8589934592;
}
/* PTS is 33bit (from 0 to 2^33 -1)
if diff between value and reference is bigger than half of the amplitude (2^32) then it means that
PTS looping occured. fill the gap */
while (Math.abs(value - reference) > 4294967296) {
value += offset;
}
return value;
}
}]);
return MP4Remuxer;
}();
exports.default = MP4Remuxer;
},{"30":30,"32":32,"33":33,"41":41,"50":50}],43:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* passthrough remuxer
*/
var _events = _dereq_(32);
var _events2 = _interopRequireDefault(_events);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var PassThroughRemuxer = function () {
function PassThroughRemuxer(observer) {
_classCallCheck(this, PassThroughRemuxer);
this.observer = observer;
}
_createClass(PassThroughRemuxer, [{
key: 'destroy',
value: function destroy() {}
}, {
key: 'resetTimeStamp',
value: function resetTimeStamp() {}
}, {
key: 'resetInitSegment',
value: function resetInitSegment() {}
}, {
key: 'remux',
value: function remux(audioTrack, videoTrack, id3Track, textTrack, timeOffset, contiguous, accurateTimeOffset, rawData) {
var observer = this.observer;
var streamType = '';
if (audioTrack) {
streamType += 'audio';
}
if (videoTrack) {
streamType += 'video';
}
observer.trigger(_events2.default.FRAG_PARSING_DATA, {
data1: rawData,
startPTS: timeOffset,
startDTS: timeOffset,
type: streamType,
nb: 1,
dropped: 0
});
//notify end of parsing
observer.trigger(_events2.default.FRAG_PARSED);
}
}]);
return PassThroughRemuxer;
}();
exports.default = PassThroughRemuxer;
},{"32":32}],44:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var DECIMAL_RESOLUTION_REGEX = /^(\d+)x(\d+)$/;
var ATTR_LIST_REGEX = /\s*(.+?)\s*=((?:\".*?\")|.*?)(?:,|$)/g;
// adapted from https://github.com/kanongil/node-m3u8parse/blob/master/attrlist.js
var AttrList = function () {
function AttrList(attrs) {
_classCallCheck(this, AttrList);
if (typeof attrs === 'string') {
attrs = AttrList.parseAttrList(attrs);
}
for (var attr in attrs) {
if (attrs.hasOwnProperty(attr)) {
this[attr] = attrs[attr];
}
}
}
_createClass(AttrList, [{
key: 'decimalInteger',
value: function decimalInteger(attrName) {
var intValue = parseInt(this[attrName], 10);
if (intValue > Number.MAX_SAFE_INTEGER) {
return Infinity;
}
return intValue;
}
}, {
key: 'hexadecimalInteger',
value: function hexadecimalInteger(attrName) {
if (this[attrName]) {
var stringValue = (this[attrName] || '0x').slice(2);
stringValue = (stringValue.length & 1 ? '0' : '') + stringValue;
var value = new Uint8Array(stringValue.length / 2);
for (var i = 0; i < stringValue.length / 2; i++) {
value[i] = parseInt(stringValue.slice(i * 2, i * 2 + 2), 16);
}
return value;
} else {
return null;
}
}
}, {
key: 'hexadecimalIntegerAsNumber',
value: function hexadecimalIntegerAsNumber(attrName) {
var intValue = parseInt(this[attrName], 16);
if (intValue > Number.MAX_SAFE_INTEGER) {
return Infinity;
}
return intValue;
}
}, {
key: 'decimalFloatingPoint',
value: function decimalFloatingPoint(attrName) {
return parseFloat(this[attrName]);
}
}, {
key: 'enumeratedString',
value: function enumeratedString(attrName) {
return this[attrName];
}
}, {
key: 'decimalResolution',
value: function decimalResolution(attrName) {
var res = DECIMAL_RESOLUTION_REGEX.exec(this[attrName]);
if (res === null) {
return undefined;
}
return {
width: parseInt(res[1], 10),
height: parseInt(res[2], 10)
};
}
}], [{
key: 'parseAttrList',
value: function parseAttrList(input) {
var match,
attrs = {};
ATTR_LIST_REGEX.lastIndex = 0;
while ((match = ATTR_LIST_REGEX.exec(input)) !== null) {
var value = match[2],
quote = '"';
if (value.indexOf(quote) === 0 && value.lastIndexOf(quote) === value.length - 1) {
value = value.slice(1, -1);
}
attrs[match[1]] = value;
}
return attrs;
}
}]);
return AttrList;
}();
exports.default = AttrList;
},{}],45:[function(_dereq_,module,exports){
"use strict";
var BinarySearch = {
/**
* Searches for an item in an array which matches a certain condition.
* This requires the condition to only match one item in the array,
* and for the array to be ordered.
*
* @param {Array} list The array to search.
* @param {Function} comparisonFunction
* Called and provided a candidate item as the first argument.
* Should return:
* > -1 if the item should be located at a lower index than the provided item.
* > 1 if the item should be located at a higher index than the provided item.
* > 0 if the item is the item you're looking for.
*
* @return {*} The object if it is found or null otherwise.
*/
search: function search(list, comparisonFunction) {
var minIndex = 0;
var maxIndex = list.length - 1;
var currentIndex = null;
var currentElement = null;
while (minIndex <= maxIndex) {
currentIndex = (minIndex + maxIndex) / 2 | 0;
currentElement = list[currentIndex];
var comparisonResult = comparisonFunction(currentElement);
if (comparisonResult > 0) {
minIndex = currentIndex + 1;
} else if (comparisonResult < 0) {
maxIndex = currentIndex - 1;
} else {
return currentElement;
}
}
return null;
}
};
module.exports = BinarySearch;
},{}],46:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/**
*
* This code was ported from the dash.js project at:
* https://github.com/Dash-Industry-Forum/dash.js/blob/development/externals/cea608-parser.js
* https://github.com/Dash-Industry-Forum/dash.js/commit/8269b26a761e0853bb21d78780ed945144ecdd4d#diff-71bc295a2d6b6b7093a1d3290d53a4b2
*
* The original copyright appears below:
*
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2015-2016, DASH Industry Forum.
* 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.
* * 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.
* 2. Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 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 THE COPYRIGHT HOLDER 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.
*/
/**
* Exceptions from regular ASCII. CodePoints are mapped to UTF-16 codes
*/
var specialCea608CharsCodes = {
0x2a: 0xe1, // lowercase a, acute accent
0x5c: 0xe9, // lowercase e, acute accent
0x5e: 0xed, // lowercase i, acute accent
0x5f: 0xf3, // lowercase o, acute accent
0x60: 0xfa, // lowercase u, acute accent
0x7b: 0xe7, // lowercase c with cedilla
0x7c: 0xf7, // division symbol
0x7d: 0xd1, // uppercase N tilde
0x7e: 0xf1, // lowercase n tilde
0x7f: 0x2588, // Full block
// THIS BLOCK INCLUDES THE 16 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
// THAT COME FROM HI BYTE=0x11 AND LOW BETWEEN 0x30 AND 0x3F
// THIS MEANS THAT \x50 MUST BE ADDED TO THE VALUES
0x80: 0xae, // Registered symbol (R)
0x81: 0xb0, // degree sign
0x82: 0xbd, // 1/2 symbol
0x83: 0xbf, // Inverted (open) question mark
0x84: 0x2122, // Trademark symbol (TM)
0x85: 0xa2, // Cents symbol
0x86: 0xa3, // Pounds sterling
0x87: 0x266a, // Music 8'th note
0x88: 0xe0, // lowercase a, grave accent
0x89: 0x20, // transparent space (regular)
0x8a: 0xe8, // lowercase e, grave accent
0x8b: 0xe2, // lowercase a, circumflex accent
0x8c: 0xea, // lowercase e, circumflex accent
0x8d: 0xee, // lowercase i, circumflex accent
0x8e: 0xf4, // lowercase o, circumflex accent
0x8f: 0xfb, // lowercase u, circumflex accent
// THIS BLOCK INCLUDES THE 32 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
// THAT COME FROM HI BYTE=0x12 AND LOW BETWEEN 0x20 AND 0x3F
0x90: 0xc1, // capital letter A with acute
0x91: 0xc9, // capital letter E with acute
0x92: 0xd3, // capital letter O with acute
0x93: 0xda, // capital letter U with acute
0x94: 0xdc, // capital letter U with diaresis
0x95: 0xfc, // lowercase letter U with diaeresis
0x96: 0x2018, // opening single quote
0x97: 0xa1, // inverted exclamation mark
0x98: 0x2a, // asterisk
0x99: 0x2019, // closing single quote
0x9a: 0x2501, // box drawings heavy horizontal
0x9b: 0xa9, // copyright sign
0x9c: 0x2120, // Service mark
0x9d: 0x2022, // (round) bullet
0x9e: 0x201c, // Left double quotation mark
0x9f: 0x201d, // Right double quotation mark
0xa0: 0xc0, // uppercase A, grave accent
0xa1: 0xc2, // uppercase A, circumflex
0xa2: 0xc7, // uppercase C with cedilla
0xa3: 0xc8, // uppercase E, grave accent
0xa4: 0xca, // uppercase E, circumflex
0xa5: 0xcb, // capital letter E with diaresis
0xa6: 0xeb, // lowercase letter e with diaresis
0xa7: 0xce, // uppercase I, circumflex
0xa8: 0xcf, // uppercase I, with diaresis
0xa9: 0xef, // lowercase i, with diaresis
0xaa: 0xd4, // uppercase O, circumflex
0xab: 0xd9, // uppercase U, grave accent
0xac: 0xf9, // lowercase u, grave accent
0xad: 0xdb, // uppercase U, circumflex
0xae: 0xab, // left-pointing double angle quotation mark
0xaf: 0xbb, // right-pointing double angle quotation mark
// THIS BLOCK INCLUDES THE 32 EXTENDED (TWO-BYTE) LINE 21 CHARACTERS
// THAT COME FROM HI BYTE=0x13 AND LOW BETWEEN 0x20 AND 0x3F
0xb0: 0xc3, // Uppercase A, tilde
0xb1: 0xe3, // Lowercase a, tilde
0xb2: 0xcd, // Uppercase I, acute accent
0xb3: 0xcc, // Uppercase I, grave accent
0xb4: 0xec, // Lowercase i, grave accent
0xb5: 0xd2, // Uppercase O, grave accent
0xb6: 0xf2, // Lowercase o, grave accent
0xb7: 0xd5, // Uppercase O, tilde
0xb8: 0xf5, // Lowercase o, tilde
0xb9: 0x7b, // Open curly brace
0xba: 0x7d, // Closing curly brace
0xbb: 0x5c, // Backslash
0xbc: 0x5e, // Caret
0xbd: 0x5f, // Underscore
0xbe: 0x7c, // Pipe (vertical line)
0xbf: 0x223c, // Tilde operator
0xc0: 0xc4, // Uppercase A, umlaut
0xc1: 0xe4, // Lowercase A, umlaut
0xc2: 0xd6, // Uppercase O, umlaut
0xc3: 0xf6, // Lowercase o, umlaut
0xc4: 0xdf, // Esszett (sharp S)
0xc5: 0xa5, // Yen symbol
0xc6: 0xa4, // Generic currency sign
0xc7: 0x2503, // Box drawings heavy vertical
0xc8: 0xc5, // Uppercase A, ring
0xc9: 0xe5, // Lowercase A, ring
0xca: 0xd8, // Uppercase O, stroke
0xcb: 0xf8, // Lowercase o, strok
0xcc: 0x250f, // Box drawings heavy down and right
0xcd: 0x2513, // Box drawings heavy down and left
0xce: 0x2517, // Box drawings heavy up and right
0xcf: 0x251b // Box drawings heavy up and left
};
/**
* Utils
*/
var getCharForByte = function getCharForByte(byte) {
var charCode = byte;
if (specialCea608CharsCodes.hasOwnProperty(byte)) {
charCode = specialCea608CharsCodes[byte];
}
return String.fromCharCode(charCode);
};
var NR_ROWS = 15,
NR_COLS = 100;
// Tables to look up row from PAC data
var rowsLowCh1 = { 0x11: 1, 0x12: 3, 0x15: 5, 0x16: 7, 0x17: 9, 0x10: 11, 0x13: 12, 0x14: 14 };
var rowsHighCh1 = { 0x11: 2, 0x12: 4, 0x15: 6, 0x16: 8, 0x17: 10, 0x13: 13, 0x14: 15 };
var rowsLowCh2 = { 0x19: 1, 0x1A: 3, 0x1D: 5, 0x1E: 7, 0x1F: 9, 0x18: 11, 0x1B: 12, 0x1C: 14 };
var rowsHighCh2 = { 0x19: 2, 0x1A: 4, 0x1D: 6, 0x1E: 8, 0x1F: 10, 0x1B: 13, 0x1C: 15 };
var backgroundColors = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta', 'black', 'transparent'];
/**
* Simple logger class to be able to write with time-stamps and filter on level.
*/
var logger = {
verboseFilter: { 'DATA': 3, 'DEBUG': 3, 'INFO': 2, 'WARNING': 2, 'TEXT': 1, 'ERROR': 0 },
time: null,
verboseLevel: 0, // Only write errors
setTime: function setTime(newTime) {
this.time = newTime;
},
log: function log(severity, msg) {
var minLevel = this.verboseFilter[severity];
if (this.verboseLevel >= minLevel) {
console.log(this.time + ' [' + severity + '] ' + msg);
}
}
};
var numArrayToHexArray = function numArrayToHexArray(numArray) {
var hexArray = [];
for (var j = 0; j < numArray.length; j++) {
hexArray.push(numArray[j].toString(16));
}
return hexArray;
};
var PenState = function () {
function PenState(foreground, underline, italics, background, flash) {
_classCallCheck(this, PenState);
this.foreground = foreground || 'white';
this.underline = underline || false;
this.italics = italics || false;
this.background = background || 'black';
this.flash = flash || false;
}
_createClass(PenState, [{
key: 'reset',
value: function reset() {
this.foreground = 'white';
this.underline = false;
this.italics = false;
this.background = 'black';
this.flash = false;
}
}, {
key: 'setStyles',
value: function setStyles(styles) {
var attribs = ['foreground', 'underline', 'italics', 'background', 'flash'];
for (var i = 0; i < attribs.length; i++) {
var style = attribs[i];
if (styles.hasOwnProperty(style)) {
this[style] = styles[style];
}
}
}
}, {
key: 'isDefault',
value: function isDefault() {
return this.foreground === 'white' && !this.underline && !this.italics && this.background === 'black' && !this.flash;
}
}, {
key: 'equals',
value: function equals(other) {
return this.foreground === other.foreground && this.underline === other.underline && this.italics === other.italics && this.background === other.background && this.flash === other.flash;
}
}, {
key: 'copy',
value: function copy(newPenState) {
this.foreground = newPenState.foreground;
this.underline = newPenState.underline;
this.italics = newPenState.italics;
this.background = newPenState.background;
this.flash = newPenState.flash;
}
}, {
key: 'toString',
value: function toString() {
return 'color=' + this.foreground + ', underline=' + this.underline + ', italics=' + this.italics + ', background=' + this.background + ', flash=' + this.flash;
}
}]);
return PenState;
}();
/**
* Unicode character with styling and background.
* @constructor
*/
var StyledUnicodeChar = function () {
function StyledUnicodeChar(uchar, foreground, underline, italics, background, flash) {
_classCallCheck(this, StyledUnicodeChar);
this.uchar = uchar || ' '; // unicode character
this.penState = new PenState(foreground, underline, italics, background, flash);
}
_createClass(StyledUnicodeChar, [{
key: 'reset',
value: function reset() {
this.uchar = ' ';
this.penState.reset();
}
}, {
key: 'setChar',
value: function setChar(uchar, newPenState) {
this.uchar = uchar;
this.penState.copy(newPenState);
}
}, {
key: 'setPenState',
value: function setPenState(newPenState) {
this.penState.copy(newPenState);
}
}, {
key: 'equals',
value: function equals(other) {
return this.uchar === other.uchar && this.penState.equals(other.penState);
}
}, {
key: 'copy',
value: function copy(newChar) {
this.uchar = newChar.uchar;
this.penState.copy(newChar.penState);
}
}, {
key: 'isEmpty',
value: function isEmpty() {
return this.uchar === ' ' && this.penState.isDefault();
}
}]);
return StyledUnicodeChar;
}();
/**
* CEA-608 row consisting of NR_COLS instances of StyledUnicodeChar.
* @constructor
*/
var Row = function () {
function Row() {
_classCallCheck(this, Row);
this.chars = [];
for (var i = 0; i < NR_COLS; i++) {
this.chars.push(new StyledUnicodeChar());
}
this.pos = 0;
this.currPenState = new PenState();
}
_createClass(Row, [{
key: 'equals',
value: function equals(other) {
var equal = true;
for (var i = 0; i < NR_COLS; i++) {
if (!this.chars[i].equals(other.chars[i])) {
equal = false;
break;
}
}
return equal;
}
}, {
key: 'copy',
value: function copy(other) {
for (var i = 0; i < NR_COLS; i++) {
this.chars[i].copy(other.chars[i]);
}
}
}, {
key: 'isEmpty',
value: function isEmpty() {
var empty = true;
for (var i = 0; i < NR_COLS; i++) {
if (!this.chars[i].isEmpty()) {
empty = false;
break;
}
}
return empty;
}
/**
* Set the cursor to a valid column.
*/
}, {
key: 'setCursor',
value: function setCursor(absPos) {
if (this.pos !== absPos) {
this.pos = absPos;
}
if (this.pos < 0) {
logger.log('ERROR', 'Negative cursor position ' + this.pos);
this.pos = 0;
} else if (this.pos > NR_COLS) {
logger.log('ERROR', 'Too large cursor position ' + this.pos);
this.pos = NR_COLS;
}
}
/**
* Move the cursor relative to current position.
*/
}, {
key: 'moveCursor',
value: function moveCursor(relPos) {
var newPos = this.pos + relPos;
if (relPos > 1) {
for (var i = this.pos + 1; i < newPos + 1; i++) {
this.chars[i].setPenState(this.currPenState);
}
}
this.setCursor(newPos);
}
/**
* Backspace, move one step back and clear character.
*/
}, {
key: 'backSpace',
value: function backSpace() {
this.moveCursor(-1);
this.chars[this.pos].setChar(' ', this.currPenState);
}
}, {
key: 'insertChar',
value: function insertChar(byte) {
if (byte >= 0x90) {
//Extended char
this.backSpace();
}
var char = getCharForByte(byte);
if (this.pos >= NR_COLS) {
logger.log('ERROR', 'Cannot insert ' + byte.toString(16) + ' (' + char + ') at position ' + this.pos + '. Skipping it!');
return;
}
this.chars[this.pos].setChar(char, this.currPenState);
this.moveCursor(1);
}
}, {
key: 'clearFromPos',
value: function clearFromPos(startPos) {
var i;
for (i = startPos; i < NR_COLS; i++) {
this.chars[i].reset();
}
}
}, {
key: 'clear',
value: function clear() {
this.clearFromPos(0);
this.pos = 0;
this.currPenState.reset();
}
}, {
key: 'clearToEndOfRow',
value: function clearToEndOfRow() {
this.clearFromPos(this.pos);
}
}, {
key: 'getTextString',
value: function getTextString() {
var chars = [];
var empty = true;
for (var i = 0; i < NR_COLS; i++) {
var char = this.chars[i].uchar;
if (char !== ' ') {
empty = false;
}
chars.push(char);
}
if (empty) {
return '';
} else {
return chars.join('');
}
}
}, {
key: 'setPenStyles',
value: function setPenStyles(styles) {
this.currPenState.setStyles(styles);
var currChar = this.chars[this.pos];
currChar.setPenState(this.currPenState);
}
}]);
return Row;
}();
/**
* Keep a CEA-608 screen of 32x15 styled characters
* @constructor
*/
var CaptionScreen = function () {
function CaptionScreen() {
_classCallCheck(this, CaptionScreen);
this.rows = [];
for (var i = 0; i < NR_ROWS; i++) {
this.rows.push(new Row()); // Note that we use zero-based numbering (0-14)
}
this.currRow = NR_ROWS - 1;
this.nrRollUpRows = null;
this.reset();
}
_createClass(CaptionScreen, [{
key: 'reset',
value: function reset() {
for (var i = 0; i < NR_ROWS; i++) {
this.rows[i].clear();
}
this.currRow = NR_ROWS - 1;
}
}, {
key: 'equals',
value: function equals(other) {
var equal = true;
for (var i = 0; i < NR_ROWS; i++) {
if (!this.rows[i].equals(other.rows[i])) {
equal = false;
break;
}
}
return equal;
}
}, {
key: 'copy',
value: function copy(other) {
for (var i = 0; i < NR_ROWS; i++) {
this.rows[i].copy(other.rows[i]);
}
}
}, {
key: 'isEmpty',
value: function isEmpty() {
var empty = true;
for (var i = 0; i < NR_ROWS; i++) {
if (!this.rows[i].isEmpty()) {
empty = false;
break;
}
}
return empty;
}
}, {
key: 'backSpace',
value: function backSpace() {
var row = this.rows[this.currRow];
row.backSpace();
}
}, {
key: 'clearToEndOfRow',
value: function clearToEndOfRow() {
var row = this.rows[this.currRow];
row.clearToEndOfRow();
}
/**
* Insert a character (without styling) in the current row.
*/
}, {
key: 'insertChar',
value: function insertChar(char) {
var row = this.rows[this.currRow];
row.insertChar(char);
}
}, {
key: 'setPen',
value: function setPen(styles) {
var row = this.rows[this.currRow];
row.setPenStyles(styles);
}
}, {
key: 'moveCursor',
value: function moveCursor(relPos) {
var row = this.rows[this.currRow];
row.moveCursor(relPos);
}
}, {
key: 'setCursor',
value: function setCursor(absPos) {
logger.log('INFO', 'setCursor: ' + absPos);
var row = this.rows[this.currRow];
row.setCursor(absPos);
}
}, {
key: 'setPAC',
value: function setPAC(pacData) {
logger.log('INFO', 'pacData = ' + JSON.stringify(pacData));
var newRow = pacData.row - 1;
if (this.nrRollUpRows && newRow < this.nrRollUpRows - 1) {
newRow = this.nrRollUpRows - 1;
}
//Make sure this only affects Roll-up Captions by checking this.nrRollUpRows
if (this.nrRollUpRows && this.currRow !== newRow) {
//clear all rows first
for (var i = 0; i < NR_ROWS; i++) {
this.rows[i].clear();
}
//Copy this.nrRollUpRows rows from lastOutputScreen and place it in the newRow location
//topRowIndex - the start of rows to copy (inclusive index)
var topRowIndex = this.currRow + 1 - this.nrRollUpRows;
//We only copy if the last position was already shown.
//We use the cueStartTime value to check this.
var lastOutputScreen = this.lastOutputScreen;
if (lastOutputScreen) {
var prevLineTime = lastOutputScreen.rows[topRowIndex].cueStartTime;
if (prevLineTime && prevLineTime < logger.time) {
for (var _i = 0; _i < this.nrRollUpRows; _i++) {
this.rows[newRow - this.nrRollUpRows + _i + 1].copy(lastOutputScreen.rows[topRowIndex + _i]);
}
}
}
}
this.currRow = newRow;
var row = this.rows[this.currRow];
if (pacData.indent !== null) {
var indent = pacData.indent;
var prevPos = Math.max(indent - 1, 0);
row.setCursor(pacData.indent);
pacData.color = row.chars[prevPos].penState.foreground;
}
var styles = { foreground: pacData.color, underline: pacData.underline, italics: pacData.italics, background: 'black', flash: false };
this.setPen(styles);
}
/**
* Set background/extra foreground, but first do back_space, and then insert space (backwards compatibility).
*/
}, {
key: 'setBkgData',
value: function setBkgData(bkgData) {
logger.log('INFO', 'bkgData = ' + JSON.stringify(bkgData));
this.backSpace();
this.setPen(bkgData);
this.insertChar(0x20); //Space
}
}, {
key: 'setRollUpRows',
value: function setRollUpRows(nrRows) {
this.nrRollUpRows = nrRows;
}
}, {
key: 'rollUp',
value: function rollUp() {
if (this.nrRollUpRows === null) {
logger.log('DEBUG', 'roll_up but nrRollUpRows not set yet');
return; //Not properly setup
}
logger.log('TEXT', this.getDisplayText());
var topRowIndex = this.currRow + 1 - this.nrRollUpRows;
var topRow = this.rows.splice(topRowIndex, 1)[0];
topRow.clear();
this.rows.splice(this.currRow, 0, topRow);
logger.log('INFO', 'Rolling up');
//logger.log('TEXT', this.get_display_text())
}
/**
* Get all non-empty rows with as unicode text.
*/
}, {
key: 'getDisplayText',
value: function getDisplayText(asOneRow) {
asOneRow = asOneRow || false;
var displayText = [];
var text = '';
var rowNr = -1;
for (var i = 0; i < NR_ROWS; i++) {
var rowText = this.rows[i].getTextString();
if (rowText) {
rowNr = i + 1;
if (asOneRow) {
displayText.push('Row ' + rowNr + ': \'' + rowText + '\'');
} else {
displayText.push(rowText.trim());
}
}
}
if (displayText.length > 0) {
if (asOneRow) {
text = '[' + displayText.join(' | ') + ']';
} else {
text = displayText.join('\n');
}
}
return text;
}
}, {
key: 'getTextAndFormat',
value: function getTextAndFormat() {
return this.rows;
}
}]);
return CaptionScreen;
}();
//var modes = ['MODE_ROLL-UP', 'MODE_POP-ON', 'MODE_PAINT-ON', 'MODE_TEXT'];
var Cea608Channel = function () {
function Cea608Channel(channelNumber, outputFilter) {
_classCallCheck(this, Cea608Channel);
this.chNr = channelNumber;
this.outputFilter = outputFilter;
this.mode = null;
this.verbose = 0;
this.displayedMemory = new CaptionScreen();
this.nonDisplayedMemory = new CaptionScreen();
this.lastOutputScreen = new CaptionScreen();
this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
this.writeScreen = this.displayedMemory;
this.mode = null;
this.cueStartTime = null; // Keeps track of where a cue started.
}
_createClass(Cea608Channel, [{
key: 'reset',
value: function reset() {
this.mode = null;
this.displayedMemory.reset();
this.nonDisplayedMemory.reset();
this.lastOutputScreen.reset();
this.currRollUpRow = this.displayedMemory.rows[NR_ROWS - 1];
this.writeScreen = this.displayedMemory;
this.mode = null;
this.cueStartTime = null;
this.lastCueEndTime = null;
}
}, {
key: 'getHandler',
value: function getHandler() {
return this.outputFilter;
}
}, {
key: 'setHandler',
value: function setHandler(newHandler) {
this.outputFilter = newHandler;
}
}, {
key: 'setPAC',
value: function setPAC(pacData) {
this.writeScreen.setPAC(pacData);
}
}, {
key: 'setBkgData',
value: function setBkgData(bkgData) {
this.writeScreen.setBkgData(bkgData);
}
}, {
key: 'setMode',
value: function setMode(newMode) {
if (newMode === this.mode) {
return;
}
this.mode = newMode;
logger.log('INFO', 'MODE=' + newMode);
if (this.mode === 'MODE_POP-ON') {
this.writeScreen = this.nonDisplayedMemory;
} else {
this.writeScreen = this.displayedMemory;
this.writeScreen.reset();
}
if (this.mode !== 'MODE_ROLL-UP') {
this.displayedMemory.nrRollUpRows = null;
this.nonDisplayedMemory.nrRollUpRows = null;
}
this.mode = newMode;
}
}, {
key: 'insertChars',
value: function insertChars(chars) {
for (var i = 0; i < chars.length; i++) {
this.writeScreen.insertChar(chars[i]);
}
var screen = this.writeScreen === this.displayedMemory ? 'DISP' : 'NON_DISP';
logger.log('INFO', screen + ': ' + this.writeScreen.getDisplayText(true));
if (this.mode === 'MODE_PAINT-ON' || this.mode === 'MODE_ROLL-UP') {
logger.log('TEXT', 'DISPLAYED: ' + this.displayedMemory.getDisplayText(true));
this.outputDataUpdate();
}
}
}, {
key: 'ccRCL',
value: function ccRCL() {
// Resume Caption Loading (switch mode to Pop On)
logger.log('INFO', 'RCL - Resume Caption Loading');
this.setMode('MODE_POP-ON');
}
}, {
key: 'ccBS',
value: function ccBS() {
// BackSpace
logger.log('INFO', 'BS - BackSpace');
if (this.mode === 'MODE_TEXT') {
return;
}
this.writeScreen.backSpace();
if (this.writeScreen === this.displayedMemory) {
this.outputDataUpdate();
}
}
}, {
key: 'ccAOF',
value: function ccAOF() {
// Reserved (formerly Alarm Off)
return;
}
}, {
key: 'ccAON',
value: function ccAON() {
// Reserved (formerly Alarm On)
return;
}
}, {
key: 'ccDER',
value: function ccDER() {
// Delete to End of Row
logger.log('INFO', 'DER- Delete to End of Row');
this.writeScreen.clearToEndOfRow();
this.outputDataUpdate();
}
}, {
key: 'ccRU',
value: function ccRU(nrRows) {
//Roll-Up Captions-2,3,or 4 Rows
logger.log('INFO', 'RU(' + nrRows + ') - Roll Up');
this.writeScreen = this.displayedMemory;
this.setMode('MODE_ROLL-UP');
this.writeScreen.setRollUpRows(nrRows);
}
}, {
key: 'ccFON',
value: function ccFON() {
//Flash On
logger.log('INFO', 'FON - Flash On');
this.writeScreen.setPen({ flash: true });
}
}, {
key: 'ccRDC',
value: function ccRDC() {
// Resume Direct Captioning (switch mode to PaintOn)
logger.log('INFO', 'RDC - Resume Direct Captioning');
this.setMode('MODE_PAINT-ON');
}
}, {
key: 'ccTR',
value: function ccTR() {
// Text Restart in text mode (not supported, however)
logger.log('INFO', 'TR');
this.setMode('MODE_TEXT');
}
}, {
key: 'ccRTD',
value: function ccRTD() {
// Resume Text Display in Text mode (not supported, however)
logger.log('INFO', 'RTD');
this.setMode('MODE_TEXT');
}
}, {
key: 'ccEDM',
value: function ccEDM() {
// Erase Displayed Memory
logger.log('INFO', 'EDM - Erase Displayed Memory');
this.displayedMemory.reset();
this.outputDataUpdate();
}
}, {
key: 'ccCR',
value: function ccCR() {
// Carriage Return
logger.log('CR - Carriage Return');
this.writeScreen.rollUp();
this.outputDataUpdate();
}
}, {
key: 'ccENM',
value: function ccENM() {
//Erase Non-Displayed Memory
logger.log('INFO', 'ENM - Erase Non-displayed Memory');
this.nonDisplayedMemory.reset();
}
}, {
key: 'ccEOC',
value: function ccEOC() {
//End of Caption (Flip Memories)
logger.log('INFO', 'EOC - End Of Caption');
if (this.mode === 'MODE_POP-ON') {
var tmp = this.displayedMemory;
this.displayedMemory = this.nonDisplayedMemory;
this.nonDisplayedMemory = tmp;
this.writeScreen = this.nonDisplayedMemory;
logger.log('TEXT', 'DISP: ' + this.displayedMemory.getDisplayText());
}
this.outputDataUpdate();
}
}, {
key: 'ccTO',
value: function ccTO(nrCols) {
// Tab Offset 1,2, or 3 columns
logger.log('INFO', 'TO(' + nrCols + ') - Tab Offset');
this.writeScreen.moveCursor(nrCols);
}
}, {
key: 'ccMIDROW',
value: function ccMIDROW(secondByte) {
// Parse MIDROW command
var styles = { flash: false };
styles.underline = secondByte % 2 === 1;
styles.italics = secondByte >= 0x2e;
if (!styles.italics) {
var colorIndex = Math.floor(secondByte / 2) - 0x10;
var colors = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta'];
styles.foreground = colors[colorIndex];
} else {
styles.foreground = 'white';
}
logger.log('INFO', 'MIDROW: ' + JSON.stringify(styles));
this.writeScreen.setPen(styles);
}
}, {
key: 'outputDataUpdate',
value: function outputDataUpdate() {
var t = logger.time;
if (t === null) {
return;
}
if (this.outputFilter) {
if (this.outputFilter.updateData) {
this.outputFilter.updateData(t, this.displayedMemory);
}
if (this.cueStartTime === null && !this.displayedMemory.isEmpty()) {
// Start of a new cue
this.cueStartTime = t;
} else {
if (!this.displayedMemory.equals(this.lastOutputScreen)) {
if (this.outputFilter.newCue) {
this.outputFilter.newCue(this.cueStartTime, t, this.lastOutputScreen);
}
this.cueStartTime = this.displayedMemory.isEmpty() ? null : t;
}
}
this.lastOutputScreen.copy(this.displayedMemory);
}
}
}, {
key: 'cueSplitAtTime',
value: function cueSplitAtTime(t) {
if (this.outputFilter) {
if (!this.displayedMemory.isEmpty()) {
if (this.outputFilter.newCue) {
this.outputFilter.newCue(this.cueStartTime, t, this.displayedMemory);
}
this.cueStartTime = t;
}
}
}
}]);
return Cea608Channel;
}();
var Cea608Parser = function () {
function Cea608Parser(field, out1, out2) {
_classCallCheck(this, Cea608Parser);
this.field = field || 1;
this.outputs = [out1, out2];
this.channels = [new Cea608Channel(1, out1), new Cea608Channel(2, out2)];
this.currChNr = -1; // Will be 1 or 2
this.lastCmdA = null; // First byte of last command
this.lastCmdB = null; // Second byte of last command
this.bufferedData = [];
this.startTime = null;
this.lastTime = null;
this.dataCounters = { 'padding': 0, 'char': 0, 'cmd': 0, 'other': 0 };
}
_createClass(Cea608Parser, [{
key: 'getHandler',
value: function getHandler(index) {
return this.channels[index].getHandler();
}
}, {
key: 'setHandler',
value: function setHandler(index, newHandler) {
this.channels[index].setHandler(newHandler);
}
/**
* Add data for time t in forms of list of bytes (unsigned ints). The bytes are treated as pairs.
*/
}, {
key: 'addData',
value: function addData(t, byteList) {
var cmdFound,
a,
b,
charsFound = false;
this.lastTime = t;
logger.setTime(t);
for (var i = 0; i < byteList.length; i += 2) {
a = byteList[i] & 0x7f;
b = byteList[i + 1] & 0x7f;
if (a === 0 && b === 0) {
this.dataCounters.padding += 2;
continue;
} else {
logger.log('DATA', '[' + numArrayToHexArray([byteList[i], byteList[i + 1]]) + '] -> (' + numArrayToHexArray([a, b]) + ')');
}
cmdFound = this.parseCmd(a, b);
if (!cmdFound) {
cmdFound = this.parseMidrow(a, b);
}
if (!cmdFound) {
cmdFound = this.parsePAC(a, b);
}
if (!cmdFound) {
cmdFound = this.parseBackgroundAttributes(a, b);
}
if (!cmdFound) {
charsFound = this.parseChars(a, b);
if (charsFound) {
if (this.currChNr && this.currChNr >= 0) {
var channel = this.channels[this.currChNr - 1];
channel.insertChars(charsFound);
} else {
logger.log('WARNING', 'No channel found yet. TEXT-MODE?');
}
}
}
if (cmdFound) {
this.dataCounters.cmd += 2;
} else if (charsFound) {
this.dataCounters.char += 2;
} else {
this.dataCounters.other += 2;
logger.log('WARNING', 'Couldn\'t parse cleaned data ' + numArrayToHexArray([a, b]) + ' orig: ' + numArrayToHexArray([byteList[i], byteList[i + 1]]));
}
}
}
/**
* Parse Command.
* @returns {Boolean} Tells if a command was found
*/
}, {
key: 'parseCmd',
value: function parseCmd(a, b) {
var chNr = null;
var cond1 = (a === 0x14 || a === 0x1C) && 0x20 <= b && b <= 0x2F;
var cond2 = (a === 0x17 || a === 0x1F) && 0x21 <= b && b <= 0x23;
if (!(cond1 || cond2)) {
return false;
}
if (a === this.lastCmdA && b === this.lastCmdB) {
this.lastCmdA = null;
this.lastCmdB = null; // Repeated commands are dropped (once)
logger.log('DEBUG', 'Repeated command (' + numArrayToHexArray([a, b]) + ') is dropped');
return true;
}
if (a === 0x14 || a === 0x17) {
chNr = 1;
} else {
chNr = 2; // (a === 0x1C || a=== 0x1f)
}
var channel = this.channels[chNr - 1];
if (a === 0x14 || a === 0x1C) {
if (b === 0x20) {
channel.ccRCL();
} else if (b === 0x21) {
channel.ccBS();
} else if (b === 0x22) {
channel.ccAOF();
} else if (b === 0x23) {
channel.ccAON();
} else if (b === 0x24) {
channel.ccDER();
} else if (b === 0x25) {
channel.ccRU(2);
} else if (b === 0x26) {
channel.ccRU(3);
} else if (b === 0x27) {
channel.ccRU(4);
} else if (b === 0x28) {
channel.ccFON();
} else if (b === 0x29) {
channel.ccRDC();
} else if (b === 0x2A) {
channel.ccTR();
} else if (b === 0x2B) {
channel.ccRTD();
} else if (b === 0x2C) {
channel.ccEDM();
} else if (b === 0x2D) {
channel.ccCR();
} else if (b === 0x2E) {
channel.ccENM();
} else if (b === 0x2F) {
channel.ccEOC();
}
} else {
//a == 0x17 || a == 0x1F
channel.ccTO(b - 0x20);
}
this.lastCmdA = a;
this.lastCmdB = b;
this.currChNr = chNr;
return true;
}
/**
* Parse midrow styling command
* @returns {Boolean}
*/
}, {
key: 'parseMidrow',
value: function parseMidrow(a, b) {
var chNr = null;
if ((a === 0x11 || a === 0x19) && 0x20 <= b && b <= 0x2f) {
if (a === 0x11) {
chNr = 1;
} else {
chNr = 2;
}
if (chNr !== this.currChNr) {
logger.log('ERROR', 'Mismatch channel in midrow parsing');
return false;
}
var channel = this.channels[chNr - 1];
channel.ccMIDROW(b);
logger.log('DEBUG', 'MIDROW (' + numArrayToHexArray([a, b]) + ')');
return true;
}
return false;
}
/**
* Parse Preable Access Codes (Table 53).
* @returns {Boolean} Tells if PAC found
*/
}, {
key: 'parsePAC',
value: function parsePAC(a, b) {
var chNr = null;
var row = null;
var case1 = (0x11 <= a && a <= 0x17 || 0x19 <= a && a <= 0x1F) && 0x40 <= b && b <= 0x7F;
var case2 = (a === 0x10 || a === 0x18) && 0x40 <= b && b <= 0x5F;
if (!(case1 || case2)) {
return false;
}
if (a === this.lastCmdA && b === this.lastCmdB) {
this.lastCmdA = null;
this.lastCmdB = null;
return true; // Repeated commands are dropped (once)
}
chNr = a <= 0x17 ? 1 : 2;
if (0x40 <= b && b <= 0x5F) {
row = chNr === 1 ? rowsLowCh1[a] : rowsLowCh2[a];
} else {
// 0x60 <= b <= 0x7F
row = chNr === 1 ? rowsHighCh1[a] : rowsHighCh2[a];
}
var pacData = this.interpretPAC(row, b);
var channel = this.channels[chNr - 1];
channel.setPAC(pacData);
this.lastCmdA = a;
this.lastCmdB = b;
this.currChNr = chNr;
return true;
}
/**
* Interpret the second byte of the pac, and return the information.
* @returns {Object} pacData with style parameters.
*/
}, {
key: 'interpretPAC',
value: function interpretPAC(row, byte) {
var pacIndex = byte;
var pacData = { color: null, italics: false, indent: null, underline: false, row: row };
if (byte > 0x5F) {
pacIndex = byte - 0x60;
} else {
pacIndex = byte - 0x40;
}
pacData.underline = (pacIndex & 1) === 1;
if (pacIndex <= 0xd) {
pacData.color = ['white', 'green', 'blue', 'cyan', 'red', 'yellow', 'magenta', 'white'][Math.floor(pacIndex / 2)];
} else if (pacIndex <= 0xf) {
pacData.italics = true;
pacData.color = 'white';
} else {
pacData.indent = Math.floor((pacIndex - 0x10) / 2) * 4;
}
return pacData; // Note that row has zero offset. The spec uses 1.
}
/**
* Parse characters.
* @returns An array with 1 to 2 codes corresponding to chars, if found. null otherwise.
*/
}, {
key: 'parseChars',
value: function parseChars(a, b) {
var channelNr = null,
charCodes = null,
charCode1 = null;
if (a >= 0x19) {
channelNr = 2;
charCode1 = a - 8;
} else {
channelNr = 1;
charCode1 = a;
}
if (0x11 <= charCode1 && charCode1 <= 0x13) {
// Special character
var oneCode = b;
if (charCode1 === 0x11) {
oneCode = b + 0x50;
} else if (charCode1 === 0x12) {
oneCode = b + 0x70;
} else {
oneCode = b + 0x90;
}
logger.log('INFO', 'Special char \'' + getCharForByte(oneCode) + '\' in channel ' + channelNr);
charCodes = [oneCode];
} else if (0x20 <= a && a <= 0x7f) {
charCodes = b === 0 ? [a] : [a, b];
}
if (charCodes) {
var hexCodes = numArrayToHexArray(charCodes);
logger.log('DEBUG', 'Char codes = ' + hexCodes.join(','));
this.lastCmdA = null;
this.lastCmdB = null;
}
return charCodes;
}
/**
* Parse extended background attributes as well as new foreground color black.
* @returns{Boolean} Tells if background attributes are found
*/
}, {
key: 'parseBackgroundAttributes',
value: function parseBackgroundAttributes(a, b) {
var bkgData, index, chNr, channel;
var case1 = (a === 0x10 || a === 0x18) && 0x20 <= b && b <= 0x2f;
var case2 = (a === 0x17 || a === 0x1f) && 0x2d <= b && b <= 0x2f;
if (!(case1 || case2)) {
return false;
}
bkgData = {};
if (a === 0x10 || a === 0x18) {
index = Math.floor((b - 0x20) / 2);
bkgData.background = backgroundColors[index];
if (b % 2 === 1) {
bkgData.background = bkgData.background + '_semi';
}
} else if (b === 0x2d) {
bkgData.background = 'transparent';
} else {
bkgData.foreground = 'black';
if (b === 0x2f) {
bkgData.underline = true;
}
}
chNr = a < 0x18 ? 1 : 2;
channel = this.channels[chNr - 1];
channel.setBkgData(bkgData);
this.lastCmdA = null;
this.lastCmdB = null;
return true;
}
/**
* Reset state of parser and its channels.
*/
}, {
key: 'reset',
value: function reset() {
for (var i = 0; i < this.channels.length; i++) {
if (this.channels[i]) {
this.channels[i].reset();
}
}
this.lastCmdA = null;
this.lastCmdB = null;
}
/**
* Trigger the generation of a cue, and the start of a new one if displayScreens are not empty.
*/
}, {
key: 'cueSplitAtTime',
value: function cueSplitAtTime(t) {
for (var i = 0; i < this.channels.length; i++) {
if (this.channels[i]) {
this.channels[i].cueSplitAtTime(t);
}
}
}
}]);
return Cea608Parser;
}();
exports.default = Cea608Parser;
},{}],47:[function(_dereq_,module,exports){
'use strict';
var _vttparser = _dereq_(53);
var Cues = {
newCue: function newCue(track, startTime, endTime, captionScreen) {
var row;
var cue;
var indenting;
var indent;
var text;
var VTTCue = window.VTTCue || window.TextTrackCue;
for (var r = 0; r < captionScreen.rows.length; r++) {
row = captionScreen.rows[r];
indenting = true;
indent = 0;
text = '';
if (!row.isEmpty()) {
for (var c = 0; c < row.chars.length; c++) {
if (row.chars[c].uchar.match(/\s/) && indenting) {
indent++;
} else {
text += row.chars[c].uchar;
indenting = false;
}
}
//To be used for cleaning-up orphaned roll-up captions
row.cueStartTime = startTime;
// Give a slight bump to the endTime if it's equal to startTime to avoid a SyntaxError in IE
if (startTime === endTime) {
endTime += 0.0001;
}
cue = new VTTCue(startTime, endTime, (0, _vttparser.fixLineBreaks)(text.trim()));
if (indent >= 16) {
indent--;
} else {
indent++;
}
// VTTCue.line get's flakey when using controls, so let's now include line 13&14
// also, drop line 1 since it's to close to the top
if (navigator.userAgent.match(/Firefox\//)) {
cue.line = r + 1;
} else {
cue.line = r > 7 ? r - 2 : r + 1;
}
cue.align = 'left';
// Clamp the position between 0 and 100 - if out of these bounds, Firefox throws an exception and captions break
cue.position = Math.max(0, Math.min(100, 100 * (indent / 32) + (navigator.userAgent.match(/Firefox\//) ? 50 : 0)));
track.addCue(cue);
}
}
}
};
module.exports = Cues;
},{"53":53}],48:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /*
* EWMA Bandwidth Estimator
* - heavily inspired from shaka-player
* Tracks bandwidth samples and estimates available bandwidth.
* Based on the minimum of two exponentially-weighted moving averages with
* different half-lives.
*/
var _ewma = _dereq_(49);
var _ewma2 = _interopRequireDefault(_ewma);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var EwmaBandWidthEstimator = function () {
function EwmaBandWidthEstimator(hls, slow, fast, defaultEstimate) {
_classCallCheck(this, EwmaBandWidthEstimator);
this.hls = hls;
this.defaultEstimate_ = defaultEstimate;
this.minWeight_ = 0.001;
this.minDelayMs_ = 50;
this.slow_ = new _ewma2.default(slow);
this.fast_ = new _ewma2.default(fast);
}
_createClass(EwmaBandWidthEstimator, [{
key: 'sample',
value: function sample(durationMs, numBytes) {
durationMs = Math.max(durationMs, this.minDelayMs_);
var bandwidth = 8000 * numBytes / durationMs,
//console.log('instant bw:'+ Math.round(bandwidth));
// we weight sample using loading duration....
weight = durationMs / 1000;
this.fast_.sample(weight, bandwidth);
this.slow_.sample(weight, bandwidth);
}
}, {
key: 'canEstimate',
value: function canEstimate() {
var fast = this.fast_;
return fast && fast.getTotalWeight() >= this.minWeight_;
}
}, {
key: 'getEstimate',
value: function getEstimate() {
if (this.canEstimate()) {
//console.log('slow estimate:'+ Math.round(this.slow_.getEstimate()));
//console.log('fast estimate:'+ Math.round(this.fast_.getEstimate()));
// Take the minimum of these two estimates. This should have the effect of
// adapting down quickly, but up more slowly.
return Math.min(this.fast_.getEstimate(), this.slow_.getEstimate());
} else {
return this.defaultEstimate_;
}
}
}, {
key: 'destroy',
value: function destroy() {}
}]);
return EwmaBandWidthEstimator;
}();
exports.default = EwmaBandWidthEstimator;
},{"49":49}],49:[function(_dereq_,module,exports){
"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
/*
* compute an Exponential Weighted moving average
* - https://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average
* - heavily inspired from shaka-player
*/
var EWMA = function () {
// About half of the estimated value will be from the last |halfLife| samples by weight.
function EWMA(halfLife) {
_classCallCheck(this, EWMA);
// Larger values of alpha expire historical data more slowly.
this.alpha_ = halfLife ? Math.exp(Math.log(0.5) / halfLife) : 0;
this.estimate_ = 0;
this.totalWeight_ = 0;
}
_createClass(EWMA, [{
key: "sample",
value: function sample(weight, value) {
var adjAlpha = Math.pow(this.alpha_, weight);
this.estimate_ = value * (1 - adjAlpha) + adjAlpha * this.estimate_;
this.totalWeight_ += weight;
}
}, {
key: "getTotalWeight",
value: function getTotalWeight() {
return this.totalWeight_;
}
}, {
key: "getEstimate",
value: function getEstimate() {
if (this.alpha_) {
var zeroFactor = 1 - Math.pow(this.alpha_, this.totalWeight_);
return this.estimate_ / zeroFactor;
} else {
return this.estimate_;
}
}
}]);
return EWMA;
}();
exports.default = EWMA;
},{}],50:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; };
function noop() {}
var fakeLogger = {
trace: noop,
debug: noop,
log: noop,
warn: noop,
info: noop,
error: noop
};
var exportedLogger = fakeLogger;
/*globals self: false */
//let lastCallTime;
// function formatMsgWithTimeInfo(type, msg) {
// const now = Date.now();
// const diff = lastCallTime ? '+' + (now - lastCallTime) : '0';
// lastCallTime = now;
// msg = (new Date(now)).toISOString() + ' | [' + type + '] > ' + msg + ' ( ' + diff + ' ms )';
// return msg;
// }
function formatMsg(type, msg) {
msg = '[' + type + '] > ' + msg;
return msg;
}
function consolePrintFn(type) {
var func = self.console[type];
if (func) {
return function () {
for (var _len = arguments.length, args = Array(_len), _key = 0; _key < _len; _key++) {
args[_key] = arguments[_key];
}
if (args[0]) {
args[0] = formatMsg(type, args[0]);
}
func.apply(self.console, args);
};
}
return noop;
}
function exportLoggerFunctions(debugConfig) {
for (var _len2 = arguments.length, functions = Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
functions[_key2 - 1] = arguments[_key2];
}
functions.forEach(function (type) {
exportedLogger[type] = debugConfig[type] ? debugConfig[type].bind(debugConfig) : consolePrintFn(type);
});
}
var enableLogs = exports.enableLogs = function enableLogs(debugConfig) {
if (debugConfig === true || (typeof debugConfig === 'undefined' ? 'undefined' : _typeof(debugConfig)) === 'object') {
exportLoggerFunctions(debugConfig,
// Remove out from list here to hard-disable a log-level
//'trace',
'debug', 'log', 'info', 'warn', 'error');
// Some browsers don't allow to use bind on console object anyway
// fallback to default if needed
try {
exportedLogger.log();
} catch (e) {
exportedLogger = fakeLogger;
}
} else {
exportedLogger = fakeLogger;
}
};
var logger = exports.logger = exportedLogger;
},{}],51:[function(_dereq_,module,exports){
'use strict';
/**
* TimeRanges to string helper
*/
var TimeRanges = {
toString: function toString(r) {
var log = '',
len = r.length;
for (var i = 0; i < len; i++) {
log += '[' + r.start(i).toFixed(3) + ',' + r.end(i).toFixed(3) + ']';
}
return log;
}
};
module.exports = TimeRanges;
},{}],52:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
/**
* 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.
*/
exports.default = function () {
if (typeof window !== 'undefined' && window.VTTCue) {
return window.VTTCue;
}
var autoKeyword = 'auto';
var directionSetting = {
'': true,
lr: true,
rl: true
};
var alignSetting = {
start: true,
middle: true,
end: true,
left: true,
right: true
};
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 extend(obj) {
var i = 1;
for (; i < arguments.length; i++) {
var cobj = arguments[i];
for (var p in cobj) {
obj[p] = cobj[p];
}
}
return obj;
}
function VTTCue(startTime, endTime, text) {
var cue = this;
var isIE8 = function () {
if (typeof navigator === 'undefined') {
return;
}
return (/MSIE\s8\.0/.test(navigator.userAgent)
);
}();
var baseObj = {};
if (isIE8) {
cue = document.createElement('custom');
} else {
baseObj.enumerable = true;
}
/**
* 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.
cue.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 = 50;
var _positionAlign = 'middle';
var _size = 50;
var _align = 'middle';
Object.defineProperty(cue, 'id', extend({}, baseObj, {
get: function get() {
return _id;
},
set: function set(value) {
_id = '' + value;
}
}));
Object.defineProperty(cue, 'pauseOnExit', extend({}, baseObj, {
get: function get() {
return _pauseOnExit;
},
set: function set(value) {
_pauseOnExit = !!value;
}
}));
Object.defineProperty(cue, 'startTime', extend({}, baseObj, {
get: function get() {
return _startTime;
},
set: function set(value) {
if (typeof value !== 'number') {
throw new TypeError('Start time must be set to a number.');
}
_startTime = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'endTime', extend({}, baseObj, {
get: function get() {
return _endTime;
},
set: function set(value) {
if (typeof value !== 'number') {
throw new TypeError('End time must be set to a number.');
}
_endTime = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'text', extend({}, baseObj, {
get: function get() {
return _text;
},
set: function set(value) {
_text = '' + value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'region', extend({}, baseObj, {
get: function get() {
return _region;
},
set: function set(value) {
_region = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'vertical', extend({}, baseObj, {
get: function get() {
return _vertical;
},
set: function set(value) {
var setting = findDirectionSetting(value);
// Have to check for false because the setting an be an empty string.
if (setting === false) {
throw new SyntaxError('An invalid or illegal string was specified.');
}
_vertical = setting;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'snapToLines', extend({}, baseObj, {
get: function get() {
return _snapToLines;
},
set: function set(value) {
_snapToLines = !!value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'line', extend({}, baseObj, {
get: function get() {
return _line;
},
set: function set(value) {
if (typeof value !== 'number' && value !== autoKeyword) {
throw new SyntaxError('An invalid number or illegal string was specified.');
}
_line = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'lineAlign', extend({}, baseObj, {
get: function get() {
return _lineAlign;
},
set: function set(value) {
var setting = findAlignSetting(value);
if (!setting) {
throw new SyntaxError('An invalid or illegal string was specified.');
}
_lineAlign = setting;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'position', extend({}, baseObj, {
get: function get() {
return _position;
},
set: function set(value) {
if (value < 0 || value > 100) {
throw new Error('Position must be between 0 and 100.');
}
_position = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'positionAlign', extend({}, baseObj, {
get: function get() {
return _positionAlign;
},
set: function set(value) {
var setting = findAlignSetting(value);
if (!setting) {
throw new SyntaxError('An invalid or illegal string was specified.');
}
_positionAlign = setting;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'size', extend({}, baseObj, {
get: function get() {
return _size;
},
set: function set(value) {
if (value < 0 || value > 100) {
throw new Error('Size must be between 0 and 100.');
}
_size = value;
this.hasBeenReset = true;
}
}));
Object.defineProperty(cue, 'align', extend({}, baseObj, {
get: function get() {
return _align;
},
set: function set(value) {
var setting = findAlignSetting(value);
if (!setting) {
throw new SyntaxError('An invalid or illegal string was specified.');
}
_align = setting;
this.hasBeenReset = true;
}
}));
/**
* Other <track> spec defined properties
*/
// http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#text-track-cue-display-state
cue.displayState = undefined;
if (isIE8) {
return cue;
}
}
/**
* VTTCue methods
*/
VTTCue.prototype.getCueAsHTML = function () {
// Assume WebVTT.convertCueToDOMTree is on the global.
var WebVTT = window.WebVTT;
return WebVTT.convertCueToDOMTree(window, this.text);
};
return VTTCue;
}();
},{}],53:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.fixLineBreaks = undefined;
var _vttcue = _dereq_(52);
var _vttcue2 = _interopRequireDefault(_vttcue);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var StringDecoder = function StringDecoder() {
return {
decode: function decode(data) {
if (!data) {
return '';
}
if (typeof data !== 'string') {
throw new Error('Error - expected string data.');
}
return decodeURIComponent(encodeURIComponent(data));
}
};
}; /*
* Source: https://github.com/mozilla/vtt.js/blob/master/dist/vtt.js#L1716
*/
function VTTParser() {
this.window = window;
this.state = 'INITIAL';
this.buffer = '';
this.decoder = new StringDecoder();
this.regionList = [];
}
// 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{2})(:\d{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 = Object.create(null);
}
Settings.prototype = {
// Only accept the first assignment to any key.
set: function set(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 get(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 has(k) {
return k in this.values;
},
// Accept a setting if its one of the given alternatives.
alt: function alt(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 integer(k, v) {
if (/^-?\d+$/.test(v)) {
// integer
this.set(k, parseInt(v, 10));
}
},
// Accept a setting if its a valid percentage.
percent: function percent(k, v) {
var m;
if (m = v.match(/^([\d]{1,3})(\.[\d]*)?%$/)) {
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];
var v = kv[1];
callback(k, v);
}
}
var defaults = new _vttcue2.default(0, 0, 0);
// 'middle' was changed to 'center' in the spec: https://github.com/w3c/webvtt/pull/244
// Chrome and Safari don't yet support this change, but FF does
var center = defaults.align === 'middle' ? 'middle' : 'center';
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 Error('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);
if (settings.percent(k, vals0)) {
settings.set('snapToLines', false);
}
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', 'line-left', 'line-right', 'auto']);
}
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', '');
var line = settings.get('line', 'auto');
if (line === 'auto' && defaults.line === -1) {
// set numeric line number for Safari
line = -1;
}
cue.line = line;
cue.lineAlign = settings.get('lineAlign', 'start');
cue.snapToLines = settings.get('snapToLines', true);
cue.size = settings.get('size', 100);
cue.align = settings.get('align', center);
var position = settings.get('position', 'auto');
if (position === 'auto' && defaults.position === 50) {
// set numeric position for Safari
position = cue.align === 'start' || cue.align === 'left' ? 0 : cue.align === 'end' || cue.align === 'right' ? 100 : 50;
}
cue.position = position;
}
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 Error('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);
}
function fixLineBreaks(input) {
return input.replace(/<br(?: \/)?>/gi, '\n');
}
VTTParser.prototype = {
parse: function parse(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;
buffer = fixLineBreaks(buffer);
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;
}
// 3.2 WebVTT metadata header syntax
function parseHeader(input) {
parseOptions(input, function (k, v) {
switch (k) {
case 'Region':
// 3.3 WebVTT region metadata header syntax
console.log('parse region', v);
//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].*)?$/);
if (!m || !m[0]) {
throw new Error('Malformed WebVTT signature.');
}
self.state = 'HEADER';
}
var alreadyCollectedLine = false;
while (self.buffer) {
// We can't parse a line until we have the full line.
if (!/\r\n|\n/.test(self.buffer)) {
return this;
}
if (!alreadyCollectedLine) {
line = collectNextLine();
} else {
alreadyCollectedLine = false;
}
switch (self.state) {
case 'HEADER':
// 13-18 - Allow a header (metadata) under the WEBVTT line.
if (/:/.test(line)) {
parseHeader(line);
} else if (!line) {
// An empty line terminates the header and starts the body (cues).
self.state = 'ID';
}
continue;
case 'NOTE':
// Ignore NOTE blocks.
if (!line) {
self.state = 'ID';
}
continue;
case 'ID':
// Check for the start of NOTE blocks.
if (/^NOTE($|[ \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 _vttcue2.default(0, 0, '');
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) {
// 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.
if (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;
continue;
case 'BADCUE':
// BADCUE
// 54-62 - Collect and discard the remaining cue.
if (!line) {
self.state = 'ID';
}
continue;
}
}
} catch (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 flush() {
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 Error('Malformed WebVTT signature.');
}
} catch (e) {
throw e;
}
if (self.onflush) {
self.onflush();
}
return this;
}
};
exports.fixLineBreaks = fixLineBreaks;
exports.default = VTTParser;
},{"52":52}],54:[function(_dereq_,module,exports){
'use strict';
var _vttparser = _dereq_(53);
var _vttparser2 = _interopRequireDefault(_vttparser);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var cueString2millis = function cueString2millis(timeString) {
var ts = parseInt(timeString.substr(-3));
var secs = parseInt(timeString.substr(-6, 2));
var mins = parseInt(timeString.substr(-9, 2));
var hours = timeString.length > 9 ? parseInt(timeString.substr(0, timeString.indexOf(':'))) : 0;
if (isNaN(ts) || isNaN(secs) || isNaN(mins) || isNaN(hours)) {
return -1;
}
ts += 1000 * secs;
ts += 60 * 1000 * mins;
ts += 60 * 60 * 1000 * hours;
return ts;
};
var calculateOffset = function calculateOffset(vttCCs, cc, presentationTime) {
var currCC = vttCCs[cc];
var prevCC = vttCCs[currCC.prevCC];
// This is the first discontinuity or cues have been processed since the last discontinuity
// Offset = current discontinuity time
if (!prevCC || !prevCC.new && currCC.new) {
vttCCs.ccOffset = vttCCs.presentationOffset = currCC.start;
currCC.new = false;
return;
}
// There have been discontinuities since cues were last parsed.
// Offset = time elapsed
while (prevCC && prevCC.new) {
vttCCs.ccOffset += currCC.start - prevCC.start;
currCC.new = false;
currCC = prevCC;
prevCC = vttCCs[currCC.prevCC];
}
vttCCs.presentationOffset = presentationTime;
};
var WebVTTParser = {
parse: function parse(vttByteArray, syncPTS, vttCCs, cc, callBack, errorCallBack) {
// Convert byteArray into string, replacing any somewhat exotic linefeeds with "\n", then split on that character.
var re = /\r\n|\n\r|\n|\r/g;
var vttLines = String.fromCharCode.apply(null, new Uint8Array(vttByteArray)).trim().replace(re, '\n').split('\n');
var cueTime = '00:00.000';
var mpegTs = 0;
var localTime = 0;
var presentationTime = 0;
var cues = [];
var parsingError = void 0;
var inHeader = true;
// let VTTCue = VTTCue || window.TextTrackCue;
// Create parser object using VTTCue with TextTrackCue fallback on certain browsers.
var parser = new _vttparser2.default();
parser.oncue = function (cue) {
// Adjust cue timing; clamp cues to start no earlier than - and drop cues that don't end after - 0 on timeline.
var currCC = vttCCs[cc];
var cueOffset = vttCCs.ccOffset;
// Update offsets for new discontinuities
if (currCC && currCC.new) {
if (localTime) {
// When local time is provided, offset = discontinuity start time - local time
cueOffset = vttCCs.ccOffset = currCC.start;
} else {
calculateOffset(vttCCs, cc, presentationTime);
}
}
if (presentationTime && !localTime) {
// If we have MPEGTS but no LOCAL time, offset = presentation time + discontinuity offset
cueOffset = presentationTime + vttCCs.ccOffset - vttCCs.presentationOffset;
}
cue.startTime += cueOffset - localTime;
cue.endTime += cueOffset - localTime;
// Fix encoding of special characters. TODO: Test with all sorts of weird characters.
cue.text = decodeURIComponent(escape(cue.text));
if (cue.endTime > 0) {
cues.push(cue);
}
};
parser.onparsingerror = function (e) {
parsingError = e;
};
parser.onflush = function () {
if (parsingError && errorCallBack) {
errorCallBack(parsingError);
return;
}
callBack(cues);
};
// Go through contents line by line.
vttLines.forEach(function (line) {
if (inHeader) {
// Look for X-TIMESTAMP-MAP in header.
if (line.startsWith('X-TIMESTAMP-MAP=')) {
// Once found, no more are allowed anyway, so stop searching.
inHeader = false;
// Extract LOCAL and MPEGTS.
line.substr(16).split(',').forEach(function (timestamp) {
if (timestamp.startsWith('LOCAL:')) {
cueTime = timestamp.substr(6);
} else if (timestamp.startsWith('MPEGTS:')) {
mpegTs = parseInt(timestamp.substr(7));
}
});
try {
// Calculate subtitle offset in milliseconds.
// If sync PTS is less than zero, we have a 33-bit wraparound, which is fixed by adding 2^33 = 8589934592.
syncPTS = syncPTS < 0 ? syncPTS + 8589934592 : syncPTS;
// Adjust MPEGTS by sync PTS.
mpegTs -= syncPTS;
// Convert cue time to seconds
localTime = cueString2millis(cueTime) / 1000;
// Convert MPEGTS to seconds from 90kHz.
presentationTime = mpegTs / 90000;
if (localTime === -1) {
parsingError = new Error('Malformed X-TIMESTAMP-MAP: ' + line);
}
} catch (e) {
parsingError = new Error('Malformed X-TIMESTAMP-MAP: ' + line);
}
// Return without parsing X-TIMESTAMP-MAP line.
return;
} else if (line === '') {
inHeader = false;
}
}
// Parse line by default.
parser.parse(line + '\n');
});
parser.flush();
}
};
module.exports = WebVTTParser;
},{"53":53}],55:[function(_dereq_,module,exports){
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); /**
* XHR based logger
*/
var _logger = _dereq_(50);
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var XhrLoader = function () {
function XhrLoader(config) {
_classCallCheck(this, XhrLoader);
if (config && config.xhrSetup) {
this.xhrSetup = config.xhrSetup;
}
}
_createClass(XhrLoader, [{
key: 'destroy',
value: function destroy() {
this.abort();
this.loader = null;
}
}, {
key: 'abort',
value: function abort() {
var loader = this.loader;
if (loader && loader.readyState !== 4) {
this.stats.aborted = true;
loader.abort();
}
window.clearTimeout(this.requestTimeout);
this.requestTimeout = null;
window.clearTimeout(this.retryTimeout);
this.retryTimeout = null;
}
}, {
key: 'load',
value: function load(context, config, callbacks) {
this.context = context;
this.config = config;
this.callbacks = callbacks;
this.stats = { trequest: performance.now(), retry: 0 };
this.retryDelay = config.retryDelay;
this.loadInternal();
}
}, {
key: 'loadInternal',
value: function loadInternal() {
var xhr,
context = this.context;
if (typeof XDomainRequest !== 'undefined') {
xhr = this.loader = new XDomainRequest();
} else {
xhr = this.loader = new XMLHttpRequest();
}
var stats = this.stats;
stats.tfirst = 0;
stats.loaded = 0;
var xhrSetup = this.xhrSetup;
if (xhrSetup) {
try {
xhrSetup(xhr, context.url);
} catch (e) {
// fix xhrSetup: (xhr, url) => {xhr.setRequestHeader("Content-Language", "test");}
// not working, as xhr.setRequestHeader expects xhr.readyState === OPEN
xhr.open('GET', context.url, true);
xhrSetup(xhr, context.url);
}
}
if (!xhr.readyState) {
xhr.open('GET', context.url, true);
}
if (context.rangeEnd) {
xhr.setRequestHeader('Range', 'bytes=' + context.rangeStart + '-' + (context.rangeEnd - 1));
}
xhr.onreadystatechange = this.readystatechange.bind(this);
xhr.onprogress = this.loadprogress.bind(this);
xhr.responseType = context.responseType;
// setup timeout before we perform request
this.requestTimeout = window.setTimeout(this.loadtimeout.bind(this), this.config.timeout);
xhr.send();
}
}, {
key: 'readystatechange',
value: function readystatechange(event) {
var xhr = event.currentTarget,
readyState = xhr.readyState,
stats = this.stats,
context = this.context,
config = this.config;
// don't proceed if xhr has been aborted
if (stats.aborted) {
return;
}
// >= HEADERS_RECEIVED
if (readyState >= 2) {
// clear xhr timeout and rearm it if readyState less than 4
window.clearTimeout(this.requestTimeout);
if (stats.tfirst === 0) {
stats.tfirst = Math.max(performance.now(), stats.trequest);
}
if (readyState === 4) {
var status = xhr.status;
// http status between 200 to 299 are all successful
if (status >= 200 && status < 300) {
stats.tload = Math.max(stats.tfirst, performance.now());
var data = void 0,
len = void 0;
if (context.responseType === 'arraybuffer') {
data = xhr.response;
len = data.byteLength;
} else {
data = xhr.responseText;
len = data.length;
}
stats.loaded = stats.total = len;
var response = { url: xhr.responseURL, data: data };
this.callbacks.onSuccess(response, stats, context);
} else {
// if max nb of retries reached or if http status between 400 and 499 (such error cannot be recovered, retrying is useless), return error
if (stats.retry >= config.maxRetry || status >= 400 && status < 499) {
_logger.logger.error(status + ' while loading ' + context.url);
this.callbacks.onError({ code: status, text: xhr.statusText }, context);
} else {
// retry
_logger.logger.warn(status + ' while loading ' + context.url + ', retrying in ' + this.retryDelay + '...');
// aborts and resets internal state
this.destroy();
// schedule retry
this.retryTimeout = window.setTimeout(this.loadInternal.bind(this), this.retryDelay);
// set exponential backoff
this.retryDelay = Math.min(2 * this.retryDelay, config.maxRetryDelay);
stats.retry++;
}
}
} else {
// readyState >= 2 AND readyState !==4 (readyState = HEADERS_RECEIVED || LOADING) rearm timeout as xhr not finished yet
this.requestTimeout = window.setTimeout(this.loadtimeout.bind(this), config.timeout);
}
}
}
}, {
key: 'loadtimeout',
value: function loadtimeout() {
_logger.logger.warn('timeout while loading ' + this.context.url);
this.callbacks.onTimeout(this.stats, this.context);
}
}, {
key: 'loadprogress',
value: function loadprogress(event) {
var stats = this.stats;
stats.loaded = event.loaded;
if (event.lengthComputable) {
stats.total = event.total;
}
var onProgress = this.callbacks.onProgress;
if (onProgress) {
// last args is to provide on progress data
onProgress(stats, this.context, null);
}
}
}]);
return XhrLoader;
}();
exports.default = XhrLoader;
},{"50":50}]},{},[37])(37)
});
//# sourceMappingURL=hls.js.map