mirror of
https://github.com/shaka-project/shaka-player.git
synced 2026-06-26 17:46:26 +03:00
Aaron Vaage
f4d655deb1
To prevent us from packing and unpacking audio and video from an object this changes filterNewPeriod to just take audio and video rather than a map. Change-Id: I152f2b1762d4ff9ce21cb5b501579bca315e4e4a
2918 lines
86 KiB
JavaScript
2918 lines
86 KiB
JavaScript
/**
|
|
* @license
|
|
* Copyright 2016 Google Inc.
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
goog.provide('shaka.Player');
|
|
|
|
goog.require('goog.asserts');
|
|
goog.require('shaka.abr.SimpleAbrManager');
|
|
goog.require('shaka.log');
|
|
goog.require('shaka.media.DrmEngine');
|
|
goog.require('shaka.media.ManifestParser');
|
|
goog.require('shaka.media.MediaSourceEngine');
|
|
goog.require('shaka.media.Playhead');
|
|
goog.require('shaka.media.PlayheadObserver');
|
|
goog.require('shaka.media.SegmentReference');
|
|
goog.require('shaka.media.StreamingEngine');
|
|
goog.require('shaka.net.NetworkingEngine');
|
|
goog.require('shaka.text.SimpleTextDisplayer');
|
|
goog.require('shaka.util.CancelableChain');
|
|
goog.require('shaka.util.ConfigUtils');
|
|
goog.require('shaka.util.Error');
|
|
goog.require('shaka.util.EventManager');
|
|
goog.require('shaka.util.FakeEvent');
|
|
goog.require('shaka.util.FakeEventTarget');
|
|
goog.require('shaka.util.Functional');
|
|
goog.require('shaka.util.IDestroyable');
|
|
goog.require('shaka.util.ManifestParserUtils');
|
|
goog.require('shaka.util.MapUtils');
|
|
goog.require('shaka.util.PublicPromise');
|
|
goog.require('shaka.util.StreamUtils');
|
|
|
|
|
|
|
|
/**
|
|
* Construct a Player.
|
|
*
|
|
* @param {!HTMLMediaElement} video Any existing TextTracks attached to this
|
|
* element that were not created by Shaka will be disabled. A new TextTrack
|
|
* may be created to display captions or subtitles.
|
|
* @param {function(shaka.Player)=} opt_dependencyInjector Optional callback
|
|
* which is called to inject mocks into the Player. Used for testing.
|
|
*
|
|
* @constructor
|
|
* @struct
|
|
* @implements {shaka.util.IDestroyable}
|
|
* @extends {shaka.util.FakeEventTarget}
|
|
* @export
|
|
*/
|
|
shaka.Player = function(video, opt_dependencyInjector) {
|
|
shaka.util.FakeEventTarget.call(this);
|
|
|
|
/** @private {boolean} */
|
|
this.destroyed_ = false;
|
|
|
|
/** @private {HTMLMediaElement} */
|
|
this.video_ = video;
|
|
|
|
/**
|
|
* Only holds the visibility setting until a textDisplayer_ is created.
|
|
* @private {boolean}
|
|
*/
|
|
this.textVisibility_ = false;
|
|
|
|
/** @private {shakaExtern.TextDisplayer} */
|
|
this.textDisplayer_ = null;
|
|
|
|
/** @private {shaka.util.EventManager} */
|
|
this.eventManager_ = new shaka.util.EventManager();
|
|
|
|
/** @private {shaka.net.NetworkingEngine} */
|
|
this.networkingEngine_ = null;
|
|
|
|
/** @private {shaka.media.DrmEngine} */
|
|
this.drmEngine_ = null;
|
|
|
|
/** @private {MediaSource} */
|
|
this.mediaSource_ = null;
|
|
|
|
/** @private {shaka.media.MediaSourceEngine} */
|
|
this.mediaSourceEngine_ = null;
|
|
|
|
/** @private {Promise} */
|
|
this.mediaSourceOpen_ = null;
|
|
|
|
/** @private {shaka.media.Playhead} */
|
|
this.playhead_ = null;
|
|
|
|
/** @private {shaka.media.PlayheadObserver} */
|
|
this.playheadObserver_ = null;
|
|
|
|
/** @private {shaka.media.StreamingEngine} */
|
|
this.streamingEngine_ = null;
|
|
|
|
/** @private {shakaExtern.ManifestParser} */
|
|
this.parser_ = null;
|
|
|
|
/** @private {?shakaExtern.Manifest} */
|
|
this.manifest_ = null;
|
|
|
|
/** @private {?string} */
|
|
this.manifestUri_ = null;
|
|
|
|
/** @private {shakaExtern.AbrManager} */
|
|
this.abrManager_ = null;
|
|
|
|
/**
|
|
* Contains an ID for use with creating streams. The manifest parser should
|
|
* start with small IDs, so this starts with a large one.
|
|
* @private {number}
|
|
*/
|
|
this.nextExternalStreamId_ = 1e9;
|
|
|
|
/** @private {!Array.<number>} */
|
|
this.loadingTextStreamIds_ = [];
|
|
|
|
/** @private {boolean} */
|
|
this.buffering_ = false;
|
|
|
|
/** @private {boolean} */
|
|
this.switchingPeriods_ = true;
|
|
|
|
/** @private {shaka.util.CancelableChain} */
|
|
this.loadChain_ = null;
|
|
|
|
/** @private {Promise} */
|
|
this.unloadChain_ = null;
|
|
|
|
/** @private {?shakaExtern.Variant} */
|
|
this.deferredVariant_ = null;
|
|
|
|
/** @private {boolean} */
|
|
this.deferredVariantClearBuffer_ = false;
|
|
|
|
/** @private {?shakaExtern.Stream} */
|
|
this.deferredTextStream_ = null;
|
|
|
|
/** @private {!Array.<shakaExtern.TimelineRegionInfo>} */
|
|
this.pendingTimelineRegions_ = [];
|
|
|
|
/**
|
|
* A map of Period number to a map of content type to stream id.
|
|
* @private {!Object.<number, !Object.<string, number>>}
|
|
*/
|
|
this.activeStreamsByPeriod_ = {};
|
|
|
|
/** @private {?shakaExtern.PlayerConfiguration} */
|
|
this.config_ = this.defaultConfig_();
|
|
|
|
/** @private {{width: number, height: number}} */
|
|
this.maxHwRes_ = { width: Infinity, height: Infinity };
|
|
|
|
/** @private {shakaExtern.Stats} */
|
|
this.stats_ = this.getCleanStats_();
|
|
|
|
/** @private {number} */
|
|
this.lastTimeStatsUpdateTimestamp_ = 0;
|
|
|
|
/** @private {string} */
|
|
this.currentAudioLanguage_ = this.config_.preferredAudioLanguage;
|
|
|
|
/** @private {string} */
|
|
this.currentTextLanguage_ = this.config_.preferredTextLanguage;
|
|
|
|
/** @private {string} */
|
|
this.currentVariantRole_ = '';
|
|
|
|
/** @private {string} */
|
|
this.currentTextRole_ = '';
|
|
|
|
/**
|
|
* Deprecated. To be removed in v2.3.
|
|
* @private {boolean}
|
|
*/
|
|
this.infiniteRetriesForLiveStreams_ = true;
|
|
|
|
if (opt_dependencyInjector)
|
|
opt_dependencyInjector(this);
|
|
|
|
this.networkingEngine_ = this.createNetworkingEngine();
|
|
this.initialize_();
|
|
};
|
|
goog.inherits(shaka.Player, shaka.util.FakeEventTarget);
|
|
|
|
|
|
/**
|
|
* After destruction, a Player object cannot be used again.
|
|
*
|
|
* @override
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.destroy = function() {
|
|
this.destroyed_ = true;
|
|
|
|
var cancelation = Promise.resolve();
|
|
if (this.loadChain_) {
|
|
// A load is in progress. Cancel it.
|
|
cancelation = this.loadChain_.cancel(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.PLAYER,
|
|
shaka.util.Error.Code.LOAD_INTERRUPTED));
|
|
}
|
|
|
|
return cancelation.then(function() {
|
|
var p = Promise.all([
|
|
// We need to destroy the current fields as well as waiting for an
|
|
// existing unload to complete. It is fine to call destroyStreaming_ if
|
|
// there is an unload since it resets the fields immediately.
|
|
this.unloadChain_,
|
|
this.destroyStreaming_(),
|
|
this.eventManager_ ? this.eventManager_.destroy() : null,
|
|
this.networkingEngine_ ? this.networkingEngine_.destroy() : null
|
|
]);
|
|
|
|
this.video_ = null;
|
|
this.textVisibility_ = false;
|
|
this.eventManager_ = null;
|
|
this.abrManager_ = null;
|
|
this.networkingEngine_ = null;
|
|
this.config_ = null;
|
|
return p;
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* @define {string} A version number taken from git at compile time.
|
|
*/
|
|
goog.define('GIT_VERSION', 'v2.2.0-uncompiled');
|
|
|
|
|
|
/**
|
|
* @const {string}
|
|
* @export
|
|
*/
|
|
shaka.Player.version = GIT_VERSION;
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.ErrorEvent
|
|
* @description Fired when a playback error occurs.
|
|
* @property {string} type
|
|
* 'error'
|
|
* @property {!shaka.util.Error} detail
|
|
* An object which contains details on the error. The error's 'category' and
|
|
* 'code' properties will identify the specific error that occurred. In an
|
|
* uncompiled build, you can also use the 'message' and 'stack' properties
|
|
* to debug.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.EmsgEvent
|
|
* @description Fired when a non-typical emsg is found in a segment.
|
|
* @property {string} type
|
|
* 'emsg'
|
|
* @property {shakaExtern.EmsgInfo} detail
|
|
* An object which contains the content of the emsg box.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.DrmSessionUpdateEvent
|
|
* @description Fired when the CDM has accepted the license response.
|
|
* @property {string} type
|
|
* 'drmsessionupdate'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.TimelineRegionAdded
|
|
* @description Fired when a media timeline region is added.
|
|
* @property {string} type
|
|
* 'timelineregionadded'
|
|
* @property {shakaExtern.TimelineRegionInfo} detail
|
|
* An object which contains a description of the region.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.TimelineRegionEnter
|
|
* @description Fired when the playhead enters a timeline region.
|
|
* @property {string} type
|
|
* 'timelineregionenter'
|
|
* @property {shakaExtern.TimelineRegionInfo} detail
|
|
* An object which contains a description of the region.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.TimelineRegionExit
|
|
* @description Fired when the playhead exits a timeline region.
|
|
* @property {string} type
|
|
* 'timelineregionexit'
|
|
* @property {shakaExtern.TimelineregionInfo} detail
|
|
* An object which contains a description of the region.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.BufferingEvent
|
|
* @description Fired when the player's buffering state changes.
|
|
* @property {string} type
|
|
* 'buffering'
|
|
* @property {boolean} buffering
|
|
* True when the Player enters the buffering state.
|
|
* False when the Player leaves the buffering state.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.LoadingEvent
|
|
* @description Fired when the player begins loading.
|
|
* Used by the Cast receiver to determine idle state.
|
|
* @property {string} type
|
|
* 'loading'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.UnloadingEvent
|
|
* @description Fired when the player unloads or fails to load.
|
|
* Used by the Cast receiver to determine idle state.
|
|
* @property {string} type
|
|
* 'unloading'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.TextTrackVisibilityEvent
|
|
* @description Fired when text track visibility changes.
|
|
* @property {string} type
|
|
* 'texttrackvisibility'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.TracksChangedEvent
|
|
* @description Fired when the list of tracks changes. For example, this will
|
|
* happen when changing periods or when track restrictions change.
|
|
* @property {string} type
|
|
* 'trackschanged'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.AdaptationEvent
|
|
* @description Fired when an automatic adaptation causes the active tracks
|
|
* to change. Does not fire when the application calls selectVariantTrack()
|
|
* selectTextTrack(), selectAudioLanguage() or selectTextLanguage().
|
|
* @property {string} type
|
|
* 'adaptation'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.ExpirationUpdatedEvent
|
|
* @description Fired when there is a change in the expiration times of an
|
|
* EME session.
|
|
* @property {string} type
|
|
* 'expirationupdated'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.LargeGapEvent
|
|
* @description Fired when the playhead enters a large gap. If
|
|
* |config.streaming.jumpLargeGaps| is set, the default action of this event
|
|
* is to jump the gap; this can be prevented by calling preventDefault() on
|
|
* the event object.
|
|
* @property {string} type
|
|
* 'largegap'
|
|
* @property {number} currentTime
|
|
* The current time of the playhead.
|
|
* @property {number} gapSize
|
|
* The size of the gap, in seconds.
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/**
|
|
* @event shaka.Player.StreamingEvent
|
|
* @description Fired after the manifest has been parsed and track information
|
|
* is available, but before streams have been chosen and before any segments
|
|
* have been fetched. You may use this event to configure the player based on
|
|
* information found in the manifest.
|
|
* @property {string} type
|
|
* 'streaming'
|
|
* @exportDoc
|
|
*/
|
|
|
|
|
|
/** @private {!Object.<string, function():*>} */
|
|
shaka.Player.supportPlugins_ = {};
|
|
|
|
|
|
/**
|
|
* Registers a plugin callback that will be called with support(). The
|
|
* callback will return the value that will be stored in the return value from
|
|
* support().
|
|
*
|
|
* @param {string} name
|
|
* @param {function():*} callback
|
|
* @export
|
|
*/
|
|
shaka.Player.registerSupportPlugin = function(name, callback) {
|
|
shaka.Player.supportPlugins_[name] = callback;
|
|
};
|
|
|
|
|
|
/**
|
|
* Return whether the browser provides basic support. If this returns false,
|
|
* Shaka Player cannot be used at all. In this case, do not construct a Player
|
|
* instance and do not use the library.
|
|
*
|
|
* @return {boolean}
|
|
* @export
|
|
*/
|
|
shaka.Player.isBrowserSupported = function() {
|
|
// Basic features needed for the library to be usable.
|
|
var basic = !!window.Promise && !!window.Uint8Array &&
|
|
!!Array.prototype.forEach;
|
|
|
|
return basic &&
|
|
shaka.media.MediaSourceEngine.isBrowserSupported() &&
|
|
shaka.media.DrmEngine.isBrowserSupported();
|
|
};
|
|
|
|
|
|
/**
|
|
* Probes the browser to determine what features are supported. This makes a
|
|
* number of requests to EME/MSE/etc which may result in user prompts. This
|
|
* should only be used for diagnostics.
|
|
*
|
|
* NOTE: This may show a request to the user for permission.
|
|
*
|
|
* @see https://goo.gl/ovYLvl
|
|
* @return {!Promise.<shakaExtern.SupportType>}
|
|
* @export
|
|
*/
|
|
shaka.Player.probeSupport = function() {
|
|
goog.asserts.assert(shaka.Player.isBrowserSupported(),
|
|
'Must have basic support');
|
|
return shaka.media.DrmEngine.probeSupport().then(function(drm) {
|
|
var manifest = shaka.media.ManifestParser.probeSupport();
|
|
var media = shaka.media.MediaSourceEngine.probeSupport();
|
|
var ret = {
|
|
manifest: manifest,
|
|
media: media,
|
|
drm: drm
|
|
};
|
|
|
|
var plugins = shaka.Player.supportPlugins_;
|
|
for (var name in plugins) {
|
|
ret[name] = plugins[name]();
|
|
}
|
|
|
|
return ret;
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Load a manifest.
|
|
*
|
|
* @param {string} manifestUri
|
|
* @param {number=} opt_startTime Optional start time, in seconds, to begin
|
|
* playback. Defaults to 0 for VOD and to the live edge for live.
|
|
* @param {shakaExtern.ManifestParser.Factory=} opt_manifestParserFactory
|
|
* Optional manifest parser factory to override auto-detection or use an
|
|
* unregistered parser.
|
|
* @return {!Promise} Resolved when the manifest has been loaded and playback
|
|
* has begun; rejected when an error occurs or the call was interrupted by
|
|
* destroy(), unload() or another call to load().
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.load = function(manifestUri, opt_startTime,
|
|
opt_manifestParserFactory) {
|
|
var unloadPromise = this.unload();
|
|
var loadChain = new shaka.util.CancelableChain();
|
|
this.loadChain_ = loadChain;
|
|
this.dispatchEvent(new shaka.util.FakeEvent('loading'));
|
|
|
|
var startTime = Date.now();
|
|
|
|
return loadChain.then(function() {
|
|
return unloadPromise;
|
|
}).then(function() {
|
|
// Not tracked in stats because it should be insignificant.
|
|
// Logged in case it is not.
|
|
shaka.log.debug('Unload latency:', (Date.now() - startTime) / 1000);
|
|
|
|
this.stats_ = this.getCleanStats_();
|
|
|
|
this.eventManager_.listen(this.video_, 'playing',
|
|
this.updateState_.bind(this));
|
|
this.eventManager_.listen(this.video_, 'pause',
|
|
this.updateState_.bind(this));
|
|
this.eventManager_.listen(this.video_, 'ended',
|
|
this.updateState_.bind(this));
|
|
|
|
var abrManagerFactory = this.config_.abrFactory;
|
|
this.abrManager_ = new abrManagerFactory();
|
|
this.configureAbrManager_();
|
|
|
|
this.textDisplayer_ = new this.config_.textDisplayFactory();
|
|
this.textDisplayer_.setTextVisibility(this.textVisibility_);
|
|
|
|
goog.asserts.assert(this.networkingEngine_, 'Must not be destroyed');
|
|
return shaka.media.ManifestParser.getFactory(
|
|
manifestUri,
|
|
this.networkingEngine_,
|
|
this.config_.manifest.retryParameters,
|
|
opt_manifestParserFactory);
|
|
}.bind(this)).then(function(factory) {
|
|
|
|
this.parser_ = new factory();
|
|
this.parser_.configure(this.config_.manifest);
|
|
goog.asserts.assert(this.networkingEngine_, 'Must not be destroyed');
|
|
var playerInterface = {
|
|
networkingEngine: this.networkingEngine_,
|
|
filterNewPeriod: this.filterNewPeriod_.bind(this),
|
|
filterAllPeriods: this.filterAllPeriods_.bind(this),
|
|
onTimelineRegionAdded: this.onTimelineRegionAdded_.bind(this),
|
|
onEvent: this.onEvent_.bind(this),
|
|
onError: this.onError_.bind(this)
|
|
};
|
|
|
|
if (this.parser_.start.length > 2) {
|
|
goog.asserts.assert(false, 'Old ManifestParser interface is deprecated');
|
|
shaka.log.alwaysWarn(
|
|
'The ManifestParser interface has changed. Please upgrade your ' +
|
|
'plugin to accept the PlayerInterface structure. See the ' +
|
|
'ManifestParser documentation for details.');
|
|
// Use a string index here so the compiler doesn't complain about the
|
|
// incorrect arguments.
|
|
return this.parser_['start'](
|
|
manifestUri, this.networkingEngine_, playerInterface.filterNewPeriod,
|
|
playerInterface.onError, playerInterface.onEvent);
|
|
}
|
|
|
|
return this.parser_.start(manifestUri, playerInterface);
|
|
}.bind(this)).then(function(manifest) {
|
|
|
|
// When there is a variant with video and audio, filter out all
|
|
// variants which lack one or the other.
|
|
// This is to avoid problems where we choose audio-only variants because
|
|
// they have lower bandwidth, when there are variants with video available.
|
|
var hasAVVariant = manifest.periods.some(function(period) {
|
|
return period.variants.some(function(variant) {
|
|
return variant.video && variant.audio;
|
|
});
|
|
});
|
|
if (hasAVVariant) {
|
|
shaka.log.debug('Found variant with audio and video content, ' +
|
|
'so filtering all periods.');
|
|
manifest.periods.forEach(function(period) {
|
|
period.variants = period.variants.filter(function(variant) {
|
|
return variant.video && variant.audio;
|
|
});
|
|
});
|
|
}
|
|
|
|
if (manifest.periods.length == 0) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.NO_PERIODS);
|
|
}
|
|
|
|
this.manifest_ = manifest;
|
|
this.manifestUri_ = manifestUri;
|
|
this.drmEngine_ = this.createDrmEngine();
|
|
this.drmEngine_.configure(this.config_.drm);
|
|
return this.drmEngine_.init(manifest, false /* isOffline */);
|
|
}.bind(this)).then(function() {
|
|
// Re-filter the manifest after DRM has been initialized.
|
|
this.filterAllPeriods_(this.manifest_.periods);
|
|
|
|
this.lastTimeStatsUpdateTimestamp_ = Date.now() / 1000;
|
|
|
|
// Copy preferred languages from the config again, in case the config was
|
|
// changed between construction and playback.
|
|
this.currentAudioLanguage_ = this.config_.preferredAudioLanguage;
|
|
this.currentTextLanguage_ = this.config_.preferredTextLanguage;
|
|
|
|
var fullDuration = this.manifest_.presentationTimeline.getDuration();
|
|
var playRangeEnd = this.config_.playRangeEnd;
|
|
var playRangeStart = this.config_.playRangeStart;
|
|
|
|
if (playRangeStart > 0) {
|
|
if (this.isLive()) {
|
|
shaka.log.warning('PlayerConfiguration.playRangeStart has been ' +
|
|
'configured for live content. Ignoring the setting.');
|
|
} else {
|
|
this.manifest_.presentationTimeline.setAvailabilityStart(
|
|
playRangeStart);
|
|
}
|
|
}
|
|
|
|
// If the playback has been configured to end before the end of the
|
|
// presentation, update the duration unless it's live content.
|
|
if (playRangeEnd < fullDuration) {
|
|
if (this.isLive()) {
|
|
shaka.log.warning('PlayerConfiguration.playRangeEnd has been ' +
|
|
'configured for live content. Ignoring the setting.');
|
|
} else {
|
|
this.manifest_.presentationTimeline.setDuration(playRangeEnd);
|
|
}
|
|
}
|
|
|
|
// Wait for MediaSource to open before continuing.
|
|
return Promise.all([
|
|
this.drmEngine_.attach(this.video_),
|
|
this.mediaSourceOpen_
|
|
]);
|
|
}.bind(this)).then(function() {
|
|
if (this.abrManager_['chooseStreams']) {
|
|
shaka.log.alwaysWarn('AbrManager API has changed. ' +
|
|
'The SwitchCallback signature has changed to accept a variant ' +
|
|
'instead of a map. Please update your AbrManager. ' +
|
|
'The old API will be removed in v2.3.');
|
|
this.abrManager_['init'](this.switchV21_.bind(this));
|
|
} else {
|
|
this.abrManager_.init(this.switch_.bind(this));
|
|
}
|
|
// MediaSource is open, so create the Playhead, MediaSourceEngine, and
|
|
// StreamingEngine.
|
|
this.playhead_ = this.createPlayhead(opt_startTime);
|
|
this.playheadObserver_ = this.createPlayheadObserver();
|
|
this.mediaSourceEngine_ = this.createMediaSourceEngine();
|
|
|
|
this.streamingEngine_ = this.createStreamingEngine();
|
|
this.streamingEngine_.configure(this.config_.streaming);
|
|
|
|
var event = new shaka.util.FakeEvent('streaming');
|
|
this.dispatchEvent(event);
|
|
|
|
// If the content is multi-codec and the browser can play more than one of
|
|
// them, choose codecs now before we initialize streaming.
|
|
this.chooseCodecsAndFilterManifest_();
|
|
return this.streamingEngine_.init();
|
|
}.bind(this)).then(function() {
|
|
if (this.config_.streaming.startAtSegmentBoundary) {
|
|
var time = this.adjustStartTime_(this.playhead_.getTime());
|
|
this.playhead_.setStartTime(time);
|
|
}
|
|
|
|
// Re-filter the manifest after streams have been chosen.
|
|
this.manifest_.periods.forEach(this.filterNewPeriod_.bind(this));
|
|
// Dispatch a 'trackschanged' event now that all initial filtering is done.
|
|
this.onTracksChanged_();
|
|
// Since the first streams just became active, send an adaptation event.
|
|
this.onAdaptation_();
|
|
|
|
// Now that we've filtered out variants that aren't compatible with the
|
|
// active one, update abr manager with filtered variants for the current
|
|
// period.
|
|
var currentPeriod = this.streamingEngine_.getCurrentPeriod();
|
|
var variants = shaka.util.StreamUtils.filterVariantsByLanguageAndRole(
|
|
currentPeriod, this.currentAudioLanguage_, this.currentVariantRole_);
|
|
this.abrManager_.setVariants(variants);
|
|
|
|
var hasPrimary = currentPeriod.variants.some(function(variant) {
|
|
return variant.primary;
|
|
});
|
|
if (!this.currentAudioLanguage_ && !hasPrimary) {
|
|
shaka.log.warning('No preferred audio language set. We will choose an ' +
|
|
'arbitrary language initially');
|
|
}
|
|
|
|
this.pendingTimelineRegions_.forEach(
|
|
this.playheadObserver_.addTimelineRegion.bind(this.playheadObserver_));
|
|
this.pendingTimelineRegions_ = [];
|
|
|
|
// Wait for the 'loadeddata' event to measure load() latency.
|
|
this.eventManager_.listenOnce(this.video_, 'loadeddata', function() {
|
|
// Compute latency in seconds (Date.now() gives ms):
|
|
var latency = (Date.now() - startTime) / 1000;
|
|
this.stats_.loadLatency = latency;
|
|
shaka.log.debug('Load latency:', latency);
|
|
}.bind(this));
|
|
|
|
this.loadChain_ = null;
|
|
}.bind(this)).finalize().catch(function(error) {
|
|
goog.asserts.assert(error instanceof shaka.util.Error,
|
|
'Wrong error type!');
|
|
shaka.log.debug('load() failed:', error);
|
|
|
|
// If we haven't started another load, clear the loadChain_ member.
|
|
if (this.loadChain_ == loadChain) {
|
|
this.loadChain_ = null;
|
|
this.dispatchEvent(new shaka.util.FakeEvent('unloading'));
|
|
}
|
|
return Promise.reject(error);
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* In case of multiple usable codecs, choose one based on lowest average
|
|
* bandwidth and filter out the rest.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.chooseCodecsAndFilterManifest_ = function() {
|
|
function variantCodecs(variant) {
|
|
// Only consider the base of the codec string. For example, these should
|
|
// both be considered the same codec: avc1.42c01e, avc1.4d401f
|
|
var baseVideoCodec =
|
|
variant.video ? variant.video.codecs.split('.')[0] : '';
|
|
var baseAudioCodec =
|
|
variant.audio ? variant.audio.codecs.split('.')[0] : '';
|
|
return baseVideoCodec + '-' + baseAudioCodec;
|
|
}
|
|
|
|
// Organize variants into buckets by codecs.
|
|
var variantsByCodecs = {};
|
|
this.manifest_.periods.forEach(function(period) {
|
|
period.variants.forEach(function(variant) {
|
|
var codecs = variantCodecs(variant);
|
|
if (!(codecs in variantsByCodecs)) {
|
|
variantsByCodecs[codecs] = [];
|
|
}
|
|
variantsByCodecs[codecs].push(variant);
|
|
});
|
|
});
|
|
|
|
// Compute the average bandwidth for each group of variants.
|
|
// Choose the lowest-bandwidth codecs.
|
|
var bestCodecs = null;
|
|
var lowestAverageBandwidth = Infinity;
|
|
shaka.util.MapUtils.forEach(variantsByCodecs, function(codecs, variants) {
|
|
var sum = 0;
|
|
var num = 0;
|
|
variants.forEach(function(variant) {
|
|
sum += variant.bandwidth || 0;
|
|
++num;
|
|
});
|
|
var averageBandwidth = sum / num;
|
|
shaka.log.debug('codecs', codecs, 'avg bandwidth', averageBandwidth);
|
|
|
|
if (averageBandwidth < lowestAverageBandwidth) {
|
|
bestCodecs = codecs;
|
|
lowestAverageBandwidth = averageBandwidth;
|
|
}
|
|
});
|
|
goog.asserts.assert(bestCodecs != null, 'Should have chosen codecs!');
|
|
goog.asserts.assert(!isNaN(lowestAverageBandwidth),
|
|
'Bandwidth should be a number!');
|
|
|
|
// Filter out any variants that don't match, forcing AbrManager to choose from
|
|
// the most efficient variants possible.
|
|
this.manifest_.periods.forEach(function(period) {
|
|
period.variants = period.variants.filter(function(variant) {
|
|
var codecs = variantCodecs(variant);
|
|
if (codecs == bestCodecs) return true;
|
|
|
|
shaka.log.debug('Dropping Variant (better codec available)', variant);
|
|
return false;
|
|
});
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of DrmEngine. This can be replaced by tests to
|
|
* create fake instances instead.
|
|
*
|
|
* @return {!shaka.media.DrmEngine}
|
|
*/
|
|
shaka.Player.prototype.createDrmEngine = function() {
|
|
goog.asserts.assert(this.networkingEngine_, 'Must not be destroyed');
|
|
|
|
var playerInterface = {
|
|
netEngine: this.networkingEngine_,
|
|
onError: this.onError_.bind(this),
|
|
onKeyStatus: this.onKeyStatus_.bind(this),
|
|
onExpirationUpdated: this.onExpirationUpdated_.bind(this),
|
|
onEvent: this.onEvent_.bind(this)
|
|
};
|
|
return new shaka.media.DrmEngine(playerInterface);
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of NetworkingEngine. This can be replaced by tests
|
|
* to create fake instances instead.
|
|
*
|
|
* @return {!shaka.net.NetworkingEngine}
|
|
*/
|
|
shaka.Player.prototype.createNetworkingEngine = function() {
|
|
return new shaka.net.NetworkingEngine(this.onSegmentDownloaded_.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of Playhead. This can be replaced by tests to create
|
|
* fake instances instead.
|
|
*
|
|
* @param {number=} opt_startTime
|
|
* @return {!shaka.media.Playhead}
|
|
*/
|
|
shaka.Player.prototype.createPlayhead = function(opt_startTime) {
|
|
goog.asserts.assert(this.manifest_, 'Must have manifest');
|
|
var startTime = opt_startTime == undefined ? null : opt_startTime;
|
|
return new shaka.media.Playhead(
|
|
this.video_, this.manifest_, this.config_.streaming,
|
|
startTime, this.onSeek_.bind(this), this.onEvent_.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of PlayheadOvserver. This can be replaced by tests to
|
|
* create fake instances instead.
|
|
*
|
|
* @return {!shaka.media.PlayheadObserver}
|
|
*/
|
|
shaka.Player.prototype.createPlayheadObserver = function() {
|
|
goog.asserts.assert(this.manifest_, 'Must have manifest');
|
|
return new shaka.media.PlayheadObserver(
|
|
this.video_, this.mediaSource_, this.manifest_, this.config_.streaming,
|
|
this.onBuffering_.bind(this), this.onEvent_.bind(this),
|
|
this.onChangePeriod_.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Create and open MediaSource. Potentially slow.
|
|
*
|
|
* @return {!Promise}
|
|
*/
|
|
shaka.Player.prototype.createMediaSource = function() {
|
|
this.mediaSource_ = new MediaSource();
|
|
var ret = new shaka.util.PublicPromise();
|
|
this.eventManager_.listen(this.mediaSource_, 'sourceopen', ret.resolve);
|
|
this.video_.src = window.URL.createObjectURL(this.mediaSource_);
|
|
return ret;
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of MediaSourceEngine. This can be replaced by tests
|
|
* to create fake instances instead.
|
|
*
|
|
* @return {!shaka.media.MediaSourceEngine}
|
|
*/
|
|
shaka.Player.prototype.createMediaSourceEngine = function() {
|
|
return new shaka.media.MediaSourceEngine(
|
|
this.video_, this.mediaSource_, this.textDisplayer_);
|
|
};
|
|
|
|
|
|
/**
|
|
* Creates a new instance of StreamingEngine. This can be replaced by tests
|
|
* to create fake instances instead.
|
|
*
|
|
* @return {!shaka.media.StreamingEngine}
|
|
*/
|
|
shaka.Player.prototype.createStreamingEngine = function() {
|
|
goog.asserts.assert(
|
|
this.playhead_ && this.playheadObserver_ && this.mediaSourceEngine_ &&
|
|
this.manifest_,
|
|
'Must not be destroyed');
|
|
|
|
var playerInterface = {
|
|
playhead: this.playhead_,
|
|
mediaSourceEngine: this.mediaSourceEngine_,
|
|
netEngine: this.networkingEngine_,
|
|
onChooseStreams: this.onChooseStreams_.bind(this),
|
|
onCanSwitch: this.canSwitch_.bind(this),
|
|
onError: this.onError_.bind(this),
|
|
onEvent: this.onEvent_.bind(this),
|
|
onManifestUpdate: this.onManifestUpdate_.bind(this),
|
|
onSegmentAppended: this.onSegmentAppended_.bind(this),
|
|
filterNewPeriod: this.filterNewPeriod_.bind(this),
|
|
filterAllPeriods: this.filterAllPeriods_.bind(this)
|
|
};
|
|
return new shaka.media.StreamingEngine(this.manifest_, playerInterface);
|
|
};
|
|
|
|
|
|
/**
|
|
* Configure the Player instance.
|
|
*
|
|
* The config object passed in need not be complete. It will be merged with
|
|
* the existing Player configuration.
|
|
*
|
|
* Config keys and types will be checked. If any problems with the config
|
|
* object are found, errors will be reported through logs.
|
|
*
|
|
* @param {!Object} config This should follow the form of
|
|
* {@link shakaExtern.PlayerConfiguration}, but you may omit any field you do
|
|
* not wish to change.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.configure = function(config) {
|
|
goog.asserts.assert(this.config_, 'Config must not be null!');
|
|
|
|
// Backward compatibility for AbrManager injection. To be removed in v2.3.
|
|
if (config['abr'] && config['abr']['manager']) {
|
|
shaka.log.alwaysWarn('AbrManager configuration has changed. ' +
|
|
'Please use abrFactory instead of abr.manager. ' +
|
|
'The old API will be removed in v2.3.');
|
|
var managerInstance = config['abr']['manager'];
|
|
var backwardCompatibilityFactory = function() {
|
|
return managerInstance;
|
|
};
|
|
|
|
delete config['abr']['manager'];
|
|
config['abrFactory'] = backwardCompatibilityFactory;
|
|
}
|
|
|
|
// Backward compatibility for streaming config. To be removed in v2.3.
|
|
if (config['streaming'] &&
|
|
config['streaming']['infiniteRetriesForLiveStreams'] != null) {
|
|
shaka.log.alwaysWarn('Streaming configuration has changed. ' +
|
|
'Please use streaming.failureCallback instead of ' +
|
|
'streaming.infiniteRetriesForLiveStreams. ' +
|
|
'The old API will be removed in v2.3.');
|
|
|
|
this.infiniteRetriesForLiveStreams_ =
|
|
!!config['streaming']['infiniteRetriesForLiveStreams'];
|
|
delete config['streaming']['infiniteRetriesForLiveStreams'];
|
|
}
|
|
|
|
shaka.util.ConfigUtils.mergeConfigObjects(
|
|
this.config_, config, this.defaultConfig_(), this.configOverrides_(), '');
|
|
|
|
// We only need to clear buffers is the user is changing a setting that we
|
|
// need to see reflected immediately.
|
|
var clearBuffer = 'restrictions' in config;
|
|
this.applyConfig_(clearBuffer);
|
|
};
|
|
|
|
|
|
/**
|
|
* Apply config changes.
|
|
* @param {boolean} clearBuffer
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.applyConfig_ = function(clearBuffer) {
|
|
if (this.parser_) {
|
|
this.parser_.configure(this.config_.manifest);
|
|
}
|
|
if (this.drmEngine_) {
|
|
this.drmEngine_.configure(this.config_.drm);
|
|
}
|
|
if (this.streamingEngine_) {
|
|
this.streamingEngine_.configure(this.config_.streaming);
|
|
|
|
// Need to apply the restrictions to every period.
|
|
try {
|
|
// this.filterNewPeriod_() may throw.
|
|
this.manifest_.periods.forEach(this.filterNewPeriod_.bind(this));
|
|
} catch (error) {
|
|
this.onError_(error);
|
|
}
|
|
|
|
// May need to choose new streams.
|
|
shaka.log.debug('Choosing new streams after changing configuration');
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
this.chooseStreamsAndSwitch_(period, clearBuffer);
|
|
}
|
|
|
|
if (this.abrManager_) {
|
|
this.configureAbrManager_();
|
|
// Simply enable/disable ABR with each call, since multiple calls to these
|
|
// methods have no effect.
|
|
if (this.config_.abr.enabled && !this.switchingPeriods_) {
|
|
this.abrManager_.enable();
|
|
} else {
|
|
this.abrManager_.disable();
|
|
}
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Backward compatibility for AbrManager configuration. To be removed in v2.3.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.configureAbrManager_ = function() {
|
|
if (this.abrManager_.configure) {
|
|
this.abrManager_.configure(this.config_.abr);
|
|
} else {
|
|
shaka.log.alwaysWarn('AbrManager API has changed. ' +
|
|
'AbrManager.setDefaultEstimate() and ' +
|
|
'AbrManager.setRestrictions() are deprecated. ' +
|
|
'AbrManager.configure() is used instead. ' +
|
|
'Please upgrade to the new API. ' +
|
|
'The old API will be removed in v2.3.');
|
|
|
|
this.abrManager_['setDefaultEstimate'](
|
|
this.config_.abr.defaultBandwidthEstimate);
|
|
this.abrManager_['setRestrictions'](this.config_.abr.restrictions);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Return a copy of the current configuration. Modifications of the returned
|
|
* value will not affect the Player's active configuration. You must call
|
|
* player.configure() to make changes.
|
|
*
|
|
* @return {shakaExtern.PlayerConfiguration}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getConfiguration = function() {
|
|
goog.asserts.assert(this.config_, 'Config must not be null!');
|
|
|
|
var ret = this.defaultConfig_();
|
|
shaka.util.ConfigUtils.mergeConfigObjects(
|
|
ret, this.config_, this.defaultConfig_(), this.configOverrides_(), '');
|
|
return ret;
|
|
};
|
|
|
|
|
|
/**
|
|
* Reset configuration to default.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.resetConfiguration = function() {
|
|
// Don't call mergeConfigObjects_(), since that would not reset open-ended
|
|
// dictionaries like drm.servers.
|
|
this.config_ = this.defaultConfig_();
|
|
|
|
// Rather than checking if it makes sense to clear the buffers based on which
|
|
// values are getting reset, just clear them.
|
|
this.applyConfig_(true);
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {HTMLMediaElement} A reference to the HTML Media Element passed
|
|
* in during initialization.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getMediaElement = function() {
|
|
return this.video_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {shaka.net.NetworkingEngine} A reference to the Player's networking
|
|
* engine. Applications may use this to make requests through Shaka's
|
|
* networking plugins.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getNetworkingEngine = function() {
|
|
return this.networkingEngine_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {?string} If a manifest is loaded, returns the manifest URI given in
|
|
* the last call to load(). Otherwise, returns null.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getManifestUri = function() {
|
|
return this.manifestUri_;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {boolean} True if the current stream is live. False otherwise.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.isLive = function() {
|
|
return this.manifest_ ?
|
|
this.manifest_.presentationTimeline.isLive() :
|
|
false;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {boolean} True if the current stream is in-progress VOD.
|
|
* False otherwise.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.isInProgress = function() {
|
|
return this.manifest_ ?
|
|
this.manifest_.presentationTimeline.isInProgress() :
|
|
false;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {boolean} True for audio-only content. False otherwise.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.isAudioOnly = function() {
|
|
if (!this.manifest_ || !this.manifest_.periods.length)
|
|
return false;
|
|
|
|
var variants = this.manifest_.periods[0].variants;
|
|
if (!variants.length)
|
|
return false;
|
|
|
|
// Note that if there are some audio-only variants and some audio-video
|
|
// variants, the audio-only variants are removed during filtering.
|
|
// Therefore if the first variant has no video, that's sufficient to say it
|
|
// is audio-only content.
|
|
return !variants[0].video;
|
|
};
|
|
|
|
|
|
/**
|
|
* Get the seekable range for the current stream.
|
|
* @return {{start: number, end: number}}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.seekRange = function() {
|
|
var start = 0;
|
|
var end = 0;
|
|
if (this.manifest_) {
|
|
var timeline = this.manifest_.presentationTimeline;
|
|
start = timeline.getSegmentAvailabilityStart();
|
|
end = timeline.getSeekRangeEnd();
|
|
}
|
|
return {'start': start, 'end': end};
|
|
};
|
|
|
|
|
|
/**
|
|
* Get the key system currently being used by EME. This returns the empty
|
|
* string if not using EME.
|
|
*
|
|
* @return {string}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.keySystem = function() {
|
|
return this.drmEngine_ ? this.drmEngine_.keySystem() : '';
|
|
};
|
|
|
|
|
|
/**
|
|
* Get the DrmInfo used to initialize EME. This returns null when not using
|
|
* EME.
|
|
*
|
|
* @return {?shakaExtern.DrmInfo}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.drmInfo = function() {
|
|
return this.drmEngine_ ? this.drmEngine_.getDrmInfo() : null;
|
|
};
|
|
|
|
|
|
/**
|
|
* The next known expiration time for any EME session. If the sessions never
|
|
* expire, or there are no EME sessions, this returns Infinity.
|
|
*
|
|
* @return {number}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getExpiration = function() {
|
|
return this.drmEngine_ ? this.drmEngine_.getExpiration() : Infinity;
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {boolean} True if the Player is in a buffering state.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.isBuffering = function() {
|
|
return this.buffering_;
|
|
};
|
|
|
|
|
|
/**
|
|
* Unload the current manifest and make the Player available for re-use.
|
|
*
|
|
* @return {!Promise} Resolved when streaming has stopped and the previous
|
|
* content, if any, has been unloaded.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.unload = function() {
|
|
if (this.destroyed_) return Promise.resolve();
|
|
this.dispatchEvent(new shaka.util.FakeEvent('unloading'));
|
|
|
|
var p = Promise.resolve();
|
|
if (this.loadChain_) {
|
|
// A load is in progress, cancel it.
|
|
var interrupt = new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.PLAYER,
|
|
shaka.util.Error.Code.LOAD_INTERRUPTED);
|
|
p = this.loadChain_.cancel(interrupt);
|
|
}
|
|
|
|
return p.then(function() {
|
|
// If there is an existing unload operation, use that.
|
|
if (!this.unloadChain_) {
|
|
this.unloadChain_ = this.resetStreaming_().then(function() {
|
|
this.unloadChain_ = null;
|
|
}.bind(this));
|
|
}
|
|
return this.unloadChain_;
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Gets the current effective playback rate. If using trick play, it will
|
|
* return the current trick play rate; otherwise, it will return the video
|
|
* playback rate.
|
|
* @return {number}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getPlaybackRate = function() {
|
|
return this.playhead_ ? this.playhead_.getPlaybackRate() : 0;
|
|
};
|
|
|
|
|
|
/**
|
|
* Skip through the content without playing. Simulated using repeated seeks.
|
|
*
|
|
* Trick play will be canceled automatically if the playhead hits the beginning
|
|
* or end of the seekable range for the content.
|
|
*
|
|
* @param {number} rate The playback rate to simulate. For example, a rate of
|
|
* 2.5 would result in 2.5 seconds of content being skipped every second.
|
|
* To trick-play backward, use a negative rate.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.trickPlay = function(rate) {
|
|
shaka.log.debug('Trick play rate', rate);
|
|
if (this.playhead_)
|
|
this.playhead_.setPlaybackRate(rate);
|
|
|
|
if (this.streamingEngine_)
|
|
this.streamingEngine_.setTrickPlay(rate != 1);
|
|
};
|
|
|
|
|
|
/**
|
|
* Cancel trick-play.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.cancelTrickPlay = function() {
|
|
shaka.log.debug('Trick play canceled');
|
|
if (this.playhead_)
|
|
this.playhead_.setPlaybackRate(1);
|
|
|
|
if (this.streamingEngine_)
|
|
this.streamingEngine_.setTrickPlay(false);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return a list of variant tracks available for the current
|
|
* Period. If there are multiple Periods, then you must seek to the Period
|
|
* before being able to switch.
|
|
*
|
|
* @return {!Array.<shakaExtern.Track>}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getVariantTracks = function() {
|
|
if (!this.manifest_)
|
|
return [];
|
|
this.assertCorrectActiveStreams_();
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
|
|
var currentPeriod = shaka.util.StreamUtils.findPeriodContainingTime(
|
|
this.manifest_, this.playhead_.getTime());
|
|
var activeStreams = this.activeStreamsByPeriod_[currentPeriod] || {};
|
|
return shaka.util.StreamUtils.getVariantTracks(
|
|
this.manifest_.periods[currentPeriod],
|
|
activeStreams[ContentType.AUDIO],
|
|
activeStreams[ContentType.VIDEO]);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return a list of text tracks available for the current
|
|
* Period. If there are multiple Periods, then you must seek to the Period
|
|
* before being able to switch.
|
|
*
|
|
* @return {!Array.<shakaExtern.Track>}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getTextTracks = function() {
|
|
if (!this.manifest_)
|
|
return [];
|
|
this.assertCorrectActiveStreams_();
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
var currentPeriod = shaka.util.StreamUtils.findPeriodContainingTime(
|
|
this.manifest_, this.playhead_.getTime());
|
|
var activeStreams = this.activeStreamsByPeriod_[currentPeriod] || {};
|
|
return shaka.util.StreamUtils
|
|
.getTextTracks(
|
|
this.manifest_.periods[currentPeriod],
|
|
activeStreams[ContentType.TEXT])
|
|
.filter(function(track) {
|
|
// Don't show any tracks that are being loaded still.
|
|
return this.loadingTextStreamIds_.indexOf(track.id) < 0;
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Select a specific text track. Note that AdaptationEvents are not
|
|
* fired for manual track selections.
|
|
*
|
|
* @param {shakaExtern.Track} track
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.selectTextTrack = function(track) {
|
|
if (!this.streamingEngine_)
|
|
return;
|
|
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
var stream = StreamUtils.findTextStreamForTrack(period, track);
|
|
|
|
if (!stream) {
|
|
shaka.log.error('Unable to find the track with id "' + track.id +
|
|
'"; did we change Periods?');
|
|
return;
|
|
}
|
|
|
|
// Add entries to the history.
|
|
this.addTextStreamToSwitchHistory_(stream, /* fromAdaptation */ false);
|
|
this.switchTextStream_(stream);
|
|
};
|
|
|
|
|
|
/**
|
|
* Select a specific track. Note that AdaptationEvents are not fired for manual
|
|
* track selections.
|
|
*
|
|
* @param {shakaExtern.Track} track
|
|
* @param {boolean=} opt_clearBuffer
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.selectVariantTrack = function(track, opt_clearBuffer) {
|
|
if (!this.streamingEngine_)
|
|
return;
|
|
|
|
if (this.config_.abr.enabled) {
|
|
shaka.log.alwaysWarn('Changing tracks while abr manager is enabled will ' +
|
|
'likely result in the selected track being ' +
|
|
'overriden. Consider disabling abr before calling ' +
|
|
'selectVariantTrack().');
|
|
}
|
|
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
var variant = StreamUtils.findVariantForTrack(period, track);
|
|
if (!variant) {
|
|
shaka.log.error('Unable to locate track with id "' + track.id + '".');
|
|
return;
|
|
}
|
|
|
|
// Double check that the track is allowed to be played.
|
|
// The track list should only contain playable variants,
|
|
// but if restrictions change and selectVariantTrack()
|
|
// is called before the track list is updated, we could
|
|
// get a now-restricted variant.
|
|
var variantIsPlayable = StreamUtils.isPlayable(variant);
|
|
if (!variantIsPlayable) {
|
|
shaka.log.error('Unable to switch to track with id "' + track.id +
|
|
'" because it is restricted.');
|
|
return;
|
|
}
|
|
|
|
// Add entries to the history.
|
|
this.addVariantToSwitchHistory_(variant, /* fromAdaptation */ false);
|
|
this.switchVariant_(variant, opt_clearBuffer);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return a list of audio languages available for the current
|
|
* Period.
|
|
*
|
|
* @return {!Array.<string>}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getAudioLanguages = function() {
|
|
if (!this.streamingEngine_) {
|
|
return [];
|
|
}
|
|
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
var variants = StreamUtils.getPlayableVariants(period.variants);
|
|
return variants.map(function(variant) {
|
|
return variant.language;
|
|
}).filter(shaka.util.Functional.isNotDuplicate);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return a list of text languages available for the current
|
|
* Period.
|
|
*
|
|
* @return {!Array.<string>}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getTextLanguages = function() {
|
|
if (!this.streamingEngine_) {
|
|
return [];
|
|
}
|
|
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
return period.textStreams.map(function(stream) {
|
|
return stream.language;
|
|
}).filter(shaka.util.Functional.isNotDuplicate);
|
|
};
|
|
|
|
|
|
/**
|
|
* Sets currentAudioLanguage to the selected language and chooses
|
|
* new variant in that language if need be.
|
|
*
|
|
* @param {!string} language
|
|
* @param {string=} opt_role
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.selectAudioLanguage = function(language, opt_role) {
|
|
if (!this.streamingEngine_) return;
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
this.currentAudioLanguage_ = language;
|
|
this.currentVariantRole_ = opt_role || '';
|
|
this.chooseStreamsAndSwitch_(period, true);
|
|
};
|
|
|
|
|
|
/**
|
|
* Sets currentTextLanguage to the selected language and chooses
|
|
* new text stream in that language if need be.
|
|
*
|
|
* @param {!string} language
|
|
* @param {string=} opt_role
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.selectTextLanguage = function(language, opt_role) {
|
|
if (!this.streamingEngine_) return;
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
this.currentTextLanguage_ = language;
|
|
this.currentTextRole_ = opt_role || '';
|
|
this.chooseStreamsAndSwitch_(period, true);
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {boolean} True if the current text track is visible.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.isTextTrackVisible = function() {
|
|
if (this.textDisplayer_) {
|
|
return this.textDisplayer_.isTextVisible();
|
|
} else {
|
|
return this.textVisibility_;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Set the visibility of the current text track, if any.
|
|
*
|
|
* @param {boolean} on
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.setTextTrackVisibility = function(on) {
|
|
if (this.textDisplayer_) {
|
|
this.textDisplayer_.setTextVisibility(on);
|
|
} else {
|
|
this.textVisibility_ = on;
|
|
}
|
|
this.onTextTrackVisibility_();
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns current playhead time as a Date.
|
|
*
|
|
* @return {Date}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getPlayheadTimeAsDate = function() {
|
|
if (!this.manifest_) return null;
|
|
|
|
goog.asserts.assert(this.isLive(),
|
|
'getPlayheadTimeAsDate should be called on a live stream!');
|
|
|
|
var time =
|
|
this.manifest_.presentationTimeline.getPresentationStartTime() * 1000 +
|
|
this.video_.currentTime * 1000;
|
|
|
|
return new Date(time);
|
|
};
|
|
|
|
|
|
/**
|
|
* Returns the presentation start time as a Date.
|
|
*
|
|
* @return {Date}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getPresentationStartTimeAsDate = function() {
|
|
if (!this.manifest_) return null;
|
|
|
|
goog.asserts.assert(this.isLive(),
|
|
'getPresentationStartTimeAsDate should be called on a live stream!');
|
|
|
|
var time =
|
|
this.manifest_.presentationTimeline.getPresentationStartTime() * 1000;
|
|
|
|
return new Date(time);
|
|
};
|
|
|
|
|
|
/**
|
|
* Return the information about the current buffered ranges.
|
|
*
|
|
* @return {shakaExtern.BufferedInfo}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getBufferedInfo = function() {
|
|
if (!this.mediaSourceEngine_) {
|
|
return {
|
|
total: [],
|
|
audio: [],
|
|
video: [],
|
|
text: []
|
|
};
|
|
}
|
|
|
|
return this.mediaSourceEngine_.getBufferedInfo();
|
|
};
|
|
|
|
|
|
/**
|
|
* Return playback and adaptation stats.
|
|
*
|
|
* @return {shakaExtern.Stats}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getStats = function() {
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
|
|
this.updateTimeStats_();
|
|
this.updateState_();
|
|
|
|
var video = null;
|
|
var variant = null;
|
|
|
|
var videoElem = /** @type {!HTMLVideoElement} */ (this.video_);
|
|
var videoInfo = videoElem && videoElem.getVideoPlaybackQuality ?
|
|
videoElem.getVideoPlaybackQuality() : {};
|
|
|
|
if (this.playhead_ && this.manifest_) {
|
|
var periodIdx = shaka.util.StreamUtils.findPeriodContainingTime(
|
|
this.manifest_, this.playhead_.getTime());
|
|
var period = this.manifest_.periods[periodIdx];
|
|
var activeStreams = this.activeStreamsByPeriod_[periodIdx];
|
|
|
|
variant = shaka.util.StreamUtils.getVariantByStreamIds(
|
|
activeStreams[ContentType.AUDIO],
|
|
activeStreams[ContentType.VIDEO],
|
|
period.variants);
|
|
|
|
video = variant.video || {};
|
|
}
|
|
|
|
if (!video) video = {};
|
|
if (!variant) variant = {};
|
|
|
|
// Clone the internal object so our state cannot be tampered with.
|
|
var cloneObject = shaka.util.ConfigUtils.cloneObject;
|
|
return {
|
|
// Not tracked in this.stats_:
|
|
width: video.width || 0,
|
|
height: video.height || 0,
|
|
streamBandwidth: variant.bandwidth || 0,
|
|
decodedFrames: Number(videoInfo.totalVideoFrames),
|
|
droppedFrames: Number(videoInfo.droppedVideoFrames),
|
|
estimatedBandwidth: this.abrManager_ ?
|
|
this.abrManager_.getBandwidthEstimate() : NaN,
|
|
|
|
loadLatency: this.stats_.loadLatency,
|
|
playTime: this.stats_.playTime,
|
|
bufferingTime: this.stats_.bufferingTime,
|
|
// Deep-clone the objects as well as the arrays that contain them:
|
|
switchHistory: cloneObject(this.stats_.switchHistory),
|
|
stateHistory: cloneObject(this.stats_.stateHistory)
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* Adds the given text track to the current Period. Load() must resolve before
|
|
* calling. The current Period or the presentation must have a duration. This
|
|
* returns a Promise that will resolve when the track can be switched to and
|
|
* will resolve with the track that was created.
|
|
*
|
|
* @param {string} uri
|
|
* @param {string} language
|
|
* @param {string} kind
|
|
* @param {string} mime
|
|
* @param {string=} opt_codec
|
|
* @param {string=} opt_label
|
|
* @return {!Promise.<shakaExtern.Track>}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.addTextTrack = function(
|
|
uri, language, kind, mime, opt_codec, opt_label) {
|
|
if (!this.streamingEngine_) {
|
|
shaka.log.error(
|
|
'Must call load() and wait for it to resolve before adding text ' +
|
|
'tracks.');
|
|
return Promise.reject();
|
|
}
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
|
|
// Get the Period duration.
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
/** @type {number} */
|
|
var periodDuration;
|
|
for (var i = 0; i < this.manifest_.periods.length; i++) {
|
|
if (this.manifest_.periods[i] == period) {
|
|
if (i == this.manifest_.periods.length - 1) {
|
|
periodDuration = this.manifest_.presentationTimeline.getDuration() -
|
|
period.startTime;
|
|
if (periodDuration == Infinity) {
|
|
shaka.log.error(
|
|
'The current Period or the presentation must have a duration ' +
|
|
'to add external text tracks.');
|
|
return Promise.reject();
|
|
}
|
|
} else {
|
|
var nextPeriod = this.manifest_.periods[i + 1];
|
|
periodDuration = nextPeriod.startTime - period.startTime;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
/** @type {shakaExtern.Stream} */
|
|
var stream = {
|
|
id: this.nextExternalStreamId_++,
|
|
createSegmentIndex: Promise.resolve.bind(Promise),
|
|
findSegmentPosition: function(time) { return 1; },
|
|
getSegmentReference: function(ref) {
|
|
if (ref != 1) return null;
|
|
return new shaka.media.SegmentReference(
|
|
1, 0, periodDuration, function() { return [uri]; }, 0, null);
|
|
},
|
|
initSegmentReference: null,
|
|
presentationTimeOffset: 0,
|
|
mimeType: mime,
|
|
codecs: opt_codec || '',
|
|
kind: kind,
|
|
encrypted: false,
|
|
keyId: null,
|
|
language: language,
|
|
label: opt_label || null,
|
|
type: ContentType.TEXT,
|
|
primary: false,
|
|
trickModeVideo: null,
|
|
containsEmsgBoxes: false,
|
|
roles: [],
|
|
channelsCount: null
|
|
};
|
|
|
|
// Add the stream to the loading list to ensure it isn't switched to while it
|
|
// is initializing.
|
|
this.loadingTextStreamIds_.push(stream.id);
|
|
period.textStreams.push(stream);
|
|
|
|
return this.streamingEngine_.notifyNewTextStream(stream).then(function() {
|
|
if (this.destroyed_) return;
|
|
|
|
// If this was the first text stream, StreamingEngine will start streaming
|
|
// it in notifyNewTextStream. So update the active stream.
|
|
var curPeriodIdx = this.manifest_.periods.indexOf(period);
|
|
var activeText = this.streamingEngine_.getActiveText();
|
|
if (activeText) {
|
|
this.activeStreamsByPeriod_[curPeriodIdx][ContentType.TEXT] =
|
|
activeText.id;
|
|
}
|
|
|
|
// Remove the stream from the loading list.
|
|
this.loadingTextStreamIds_.splice(
|
|
this.loadingTextStreamIds_.indexOf(stream.id), 1);
|
|
|
|
shaka.log.debug('Choosing new streams after adding a text stream');
|
|
this.chooseStreamsAndSwitch_(period, true);
|
|
this.onTracksChanged_();
|
|
|
|
return {
|
|
id: stream.id,
|
|
active: false,
|
|
type: ContentType.TEXT,
|
|
bandwidth: 0,
|
|
language: language,
|
|
label: opt_label || null,
|
|
kind: kind,
|
|
width: null,
|
|
height: null
|
|
};
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Set the maximum resolution that the platform's hardware can handle.
|
|
* This will be called automatically by shaka.cast.CastReceiver to enforce
|
|
* limitations of the Chromecast hardware.
|
|
*
|
|
* @param {number} width
|
|
* @param {number} height
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.setMaxHardwareResolution = function(width, height) {
|
|
this.maxHwRes_.width = width;
|
|
this.maxHwRes_.height = height;
|
|
};
|
|
|
|
|
|
/**
|
|
* Retry streaming after a failure. Does nothing if not in a failure state.
|
|
* @return {boolean} False if unable to retry.
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.retryStreaming = function() {
|
|
return this.streamingEngine_ ? this.streamingEngine_.retry() : false;
|
|
};
|
|
|
|
|
|
/**
|
|
* Return the manifest information if it's loaded. Otherwise, return null.
|
|
* @return {?shakaExtern.Manifest}
|
|
* @export
|
|
*/
|
|
shaka.Player.prototype.getManifest = function() {
|
|
return this.manifest_;
|
|
};
|
|
|
|
|
|
/**
|
|
* Initialize the Player.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.initialize_ = function() {
|
|
// Start the (potentially slow) process of opening MediaSource now.
|
|
this.mediaSourceOpen_ = this.createMediaSource();
|
|
|
|
// Listen for video errors.
|
|
this.eventManager_.listen(this.video_, 'error',
|
|
this.onVideoError_.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {shakaExtern.Variant} variant
|
|
* @param {boolean} fromAdaptation
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.addVariantToSwitchHistory_ =
|
|
function(variant, fromAdaptation) {
|
|
if (variant.video)
|
|
this.updateActiveStreams_(variant.video);
|
|
if (variant.audio)
|
|
this.updateActiveStreams_(variant.audio);
|
|
|
|
// TODO: Get StreamingEngine to track variants and create getActiveVariant()
|
|
var activePeriod = this.streamingEngine_.getActivePeriod();
|
|
var activeVariant = shaka.util.StreamUtils.getVariantByStreams(
|
|
this.streamingEngine_.getActiveAudio(),
|
|
this.streamingEngine_.getActiveVideo(),
|
|
activePeriod ? activePeriod.variants : []);
|
|
|
|
// Only log the switch if the variant changes. For the initial decision,
|
|
// activeVariant is null and variant != activeVariant in this case, too.
|
|
// This allows us to avoid onAdaptation_() when nothing has changed.
|
|
if (variant != activeVariant) {
|
|
this.stats_.switchHistory.push({
|
|
timestamp: Date.now() / 1000,
|
|
id: variant.id,
|
|
type: 'variant',
|
|
fromAdaptation: fromAdaptation,
|
|
bandwidth: variant.bandwidth
|
|
});
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {shakaExtern.Stream} textStream
|
|
* @param {boolean} fromAdaptation
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.addTextStreamToSwitchHistory_ =
|
|
function(textStream, fromAdaptation) {
|
|
this.updateActiveStreams_(textStream);
|
|
|
|
this.stats_.switchHistory.push({
|
|
timestamp: Date.now() / 1000,
|
|
id: textStream.id,
|
|
type: 'text',
|
|
fromAdaptation: fromAdaptation,
|
|
bandwidth: null
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!shakaExtern.Stream} stream
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.updateActiveStreams_ = function(stream) {
|
|
goog.asserts.assert(this.manifest_, 'Must not be destroyed');
|
|
var periodIndex =
|
|
shaka.util.StreamUtils.findPeriodContainingStream(this.manifest_, stream);
|
|
if (!this.activeStreamsByPeriod_[periodIndex])
|
|
this.activeStreamsByPeriod_[periodIndex] = {};
|
|
this.activeStreamsByPeriod_[periodIndex][stream.type] = stream.id;
|
|
};
|
|
|
|
|
|
/**
|
|
* Destroy members responsible for streaming.
|
|
*
|
|
* @return {!Promise}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.destroyStreaming_ = function() {
|
|
if (this.eventManager_) {
|
|
this.eventManager_.unlisten(this.mediaSource_, 'sourceopen');
|
|
this.eventManager_.unlisten(this.video_, 'loadeddata');
|
|
this.eventManager_.unlisten(this.video_, 'playing');
|
|
this.eventManager_.unlisten(this.video_, 'pause');
|
|
this.eventManager_.unlisten(this.video_, 'ended');
|
|
}
|
|
|
|
if (this.video_) {
|
|
this.video_.removeAttribute('src');
|
|
this.video_.load();
|
|
}
|
|
|
|
var p = Promise.all([
|
|
this.abrManager_ ? this.abrManager_.stop() : null,
|
|
this.drmEngine_ ? this.drmEngine_.destroy() : null,
|
|
this.mediaSourceEngine_ ? this.mediaSourceEngine_.destroy() : null,
|
|
this.playhead_ ? this.playhead_.destroy() : null,
|
|
this.playheadObserver_ ? this.playheadObserver_.destroy() : null,
|
|
this.streamingEngine_ ? this.streamingEngine_.destroy() : null,
|
|
this.parser_ ? this.parser_.stop() : null,
|
|
this.textDisplayer_ ? this.textDisplayer_.destroy() : null
|
|
]);
|
|
|
|
this.drmEngine_ = null;
|
|
this.mediaSourceEngine_ = null;
|
|
this.playhead_ = null;
|
|
this.playheadObserver_ = null;
|
|
this.streamingEngine_ = null;
|
|
this.parser_ = null;
|
|
this.textDisplayer_ = null;
|
|
this.manifest_ = null;
|
|
this.manifestUri_ = null;
|
|
this.mediaSourceOpen_ = null;
|
|
this.mediaSource_ = null;
|
|
this.pendingTimelineRegions_ = [];
|
|
this.activeStreamsByPeriod_ = {};
|
|
this.stats_ = this.getCleanStats_();
|
|
|
|
return p;
|
|
};
|
|
|
|
|
|
/**
|
|
* Reset the streaming system.
|
|
* @return {!Promise}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.resetStreaming_ = function() {
|
|
if (!this.parser_) {
|
|
// Nothing is playing, so this is effectively a no-op.
|
|
return Promise.resolve();
|
|
}
|
|
|
|
// Destroy the streaming system before we recreate everything.
|
|
return this.destroyStreaming_().then(function() {
|
|
if (this.destroyed_) return;
|
|
|
|
// Force an exit from the buffering state.
|
|
this.onBuffering_(false);
|
|
|
|
// Start the (potentially slow) process of opening MediaSource now.
|
|
this.mediaSourceOpen_ = this.createMediaSource();
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {!Object}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.configOverrides_ = function() {
|
|
return {
|
|
'.drm.servers': '',
|
|
'.drm.clearKeys': '',
|
|
'.drm.advanced': {
|
|
distinctiveIdentifierRequired: false,
|
|
persistentStateRequired: false,
|
|
videoRobustness: '',
|
|
audioRobustness: '',
|
|
serverCertificate: new Uint8Array(0)
|
|
}
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {shakaExtern.PlayerConfiguration}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.defaultConfig_ = function() {
|
|
return {
|
|
drm: {
|
|
retryParameters: shaka.net.NetworkingEngine.defaultRetryParameters(),
|
|
// These will all be verified by special cases in mergeConfigObjects_():
|
|
servers: {}, // key is arbitrary key system ID, value must be string
|
|
clearKeys: {}, // key is arbitrary key system ID, value must be string
|
|
advanced: {}, // key is arbitrary key system ID, value is a record type
|
|
delayLicenseRequestUntilPlayed: false
|
|
},
|
|
manifest: {
|
|
retryParameters: shaka.net.NetworkingEngine.defaultRetryParameters(),
|
|
dash: {
|
|
customScheme: function(node) {
|
|
// Reference node to keep closure from removing it.
|
|
// If the argument is removed, it breaks our function length check
|
|
// in mergeConfigObjects_().
|
|
// TODO: Find a better solution if possible.
|
|
// NOTE: Chrome App Content Security Policy prohibits usage of new
|
|
// Function()
|
|
|
|
if (node) return null;
|
|
},
|
|
clockSyncUri: '',
|
|
ignoreDrmInfo: false,
|
|
xlinkFailGracefully: false
|
|
}
|
|
},
|
|
streaming: {
|
|
retryParameters: shaka.net.NetworkingEngine.defaultRetryParameters(),
|
|
failureCallback:
|
|
this.defaultStreamingFailureCallback_.bind(this),
|
|
rebufferingGoal: 2,
|
|
bufferingGoal: 10,
|
|
bufferBehind: 30,
|
|
ignoreTextStreamFailures: false,
|
|
startAtSegmentBoundary: false,
|
|
smallGapLimit: 0.5,
|
|
jumpLargeGaps: false
|
|
},
|
|
abrFactory: shaka.abr.SimpleAbrManager,
|
|
textDisplayFactory: function(videoElement) {
|
|
return new shaka.text.SimpleTextDisplayer(videoElement);
|
|
}.bind(null, this.video_),
|
|
abr: {
|
|
enabled: true,
|
|
// This is a relatively safe default, since 3G cell connections
|
|
// are faster than this. For slower connections, such as 2G,
|
|
// the default estimate may be too high.
|
|
defaultBandwidthEstimate: 500e3, // 500kbps
|
|
switchInterval: 8,
|
|
bandwidthUpgradeTarget: 0.85,
|
|
bandwidthDowngradeTarget: 0.95,
|
|
restrictions: {
|
|
minWidth: 0,
|
|
maxWidth: Infinity,
|
|
minHeight: 0,
|
|
maxHeight: Infinity,
|
|
minPixels: 0,
|
|
maxPixels: Infinity,
|
|
minBandwidth: 0,
|
|
maxBandwidth: Infinity
|
|
}
|
|
},
|
|
preferredAudioLanguage: '',
|
|
preferredTextLanguage: '',
|
|
restrictions: {
|
|
minWidth: 0,
|
|
maxWidth: Infinity,
|
|
minHeight: 0,
|
|
maxHeight: Infinity,
|
|
minPixels: 0,
|
|
maxPixels: Infinity,
|
|
minBandwidth: 0,
|
|
maxBandwidth: Infinity
|
|
},
|
|
playRangeStart: 0,
|
|
playRangeEnd: Infinity
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!shaka.util.Error} error
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.defaultStreamingFailureCallback_ = function(error) {
|
|
var retryErrorCodes = [
|
|
shaka.util.Error.Code.BAD_HTTP_STATUS,
|
|
shaka.util.Error.Code.HTTP_ERROR,
|
|
shaka.util.Error.Code.TIMEOUT
|
|
];
|
|
|
|
if (this.isLive() && this.infiniteRetriesForLiveStreams_ &&
|
|
retryErrorCodes.indexOf(error.code) >= 0) {
|
|
error.severity = shaka.util.Error.Severity.RECOVERABLE;
|
|
|
|
shaka.log.warning('Live streaming error. Retrying automatically...');
|
|
this.retryStreaming();
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @return {shakaExtern.Stats}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.getCleanStats_ = function() {
|
|
return {
|
|
// These are not tracked in the private stats structure and are only here to
|
|
// satisfy the compiler.
|
|
width: NaN,
|
|
height: NaN,
|
|
streamBandwidth: NaN,
|
|
decodedFrames: NaN,
|
|
droppedFrames: NaN,
|
|
estimatedBandwidth: NaN,
|
|
|
|
// These are tracked in the private stats structure to avoid the need for
|
|
// many private member variables.
|
|
loadLatency: NaN,
|
|
playTime: 0,
|
|
bufferingTime: 0,
|
|
switchHistory: [],
|
|
stateHistory: []
|
|
};
|
|
};
|
|
|
|
|
|
/**
|
|
* Filters a list of periods.
|
|
* @param {!Array.<!shakaExtern.Period>} periods
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.filterAllPeriods_ = function(periods) {
|
|
goog.asserts.assert(this.video_, 'Must not be destroyed');
|
|
var ArrayUtils = shaka.util.ArrayUtils;
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeAudio =
|
|
this.streamingEngine_ ? this.streamingEngine_.getActiveAudio() : null;
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeVideo =
|
|
this.streamingEngine_ ? this.streamingEngine_.getActiveVideo() : null;
|
|
|
|
var filterPeriod = StreamUtils.filterNewPeriod.bind(
|
|
null, this.drmEngine_, activeAudio, activeVideo);
|
|
periods.forEach(filterPeriod);
|
|
|
|
var validPeriodsCount = ArrayUtils.count(periods, function(period) {
|
|
return period.variants.some(StreamUtils.isPlayable);
|
|
});
|
|
|
|
// If no periods is playable, throw CONTENT_UNSUPPORTED_BY_BROWSER.
|
|
if (validPeriodsCount == 0) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.CONTENT_UNSUPPORTED_BY_BROWSER);
|
|
}
|
|
|
|
// If only some of the periods are playable, throw UNPLAYABLE_PERIOD.
|
|
if (validPeriodsCount < periods.length) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.UNPLAYABLE_PERIOD);
|
|
}
|
|
|
|
periods.forEach(function(period) {
|
|
var tracksChanged = shaka.util.StreamUtils.applyRestrictions(
|
|
period, this.config_.restrictions, this.maxHwRes_);
|
|
if (tracksChanged && this.streamingEngine_ &&
|
|
this.streamingEngine_.getCurrentPeriod() == period) {
|
|
this.onTracksChanged_();
|
|
}
|
|
|
|
var hasValidVariant = period.variants.some(StreamUtils.isPlayable);
|
|
if (!hasValidVariant) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.RESTRICTIONS_CANNOT_BE_MET);
|
|
}
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Filters a new period.
|
|
* @param {shakaExtern.Period} period
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.filterNewPeriod_ = function(period) {
|
|
goog.asserts.assert(this.video_, 'Must not be destroyed');
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeAudio =
|
|
this.streamingEngine_ ? this.streamingEngine_.getActiveAudio() : null;
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeVideo =
|
|
this.streamingEngine_ ? this.streamingEngine_.getActiveVideo() : null;
|
|
|
|
StreamUtils.filterNewPeriod(
|
|
this.drmEngine_, activeAudio, activeVideo, period);
|
|
|
|
/** @type {!Array.<shakaExtern.Variant>} */
|
|
var variants = period.variants;
|
|
|
|
// Check for playable variants before restrictions to give a different error
|
|
// if we have restricted all the tracks rather than there being none.
|
|
var hasPlayableVariant = variants.some(StreamUtils.isPlayable);
|
|
|
|
var tracksChanged = shaka.util.StreamUtils.applyRestrictions(
|
|
period, this.config_.restrictions, this.maxHwRes_);
|
|
if (tracksChanged && this.streamingEngine_ &&
|
|
this.streamingEngine_.getCurrentPeriod() == period) {
|
|
this.onTracksChanged_();
|
|
}
|
|
|
|
// Check for playable variants again. If the first check found variants, but
|
|
// not the second, then all variants are restricted.
|
|
var hasAvailableVariant = variants.some(StreamUtils.isPlayable);
|
|
|
|
if (!hasPlayableVariant) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.UNPLAYABLE_PERIOD);
|
|
}
|
|
|
|
if (!hasAvailableVariant) {
|
|
throw new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.RESTRICTIONS_CANNOT_BE_MET);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Switches to the given variant, deferring if needed.
|
|
* @param {shakaExtern.Variant} variant
|
|
* @param {boolean=} opt_clearBuffer
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.switchVariant_ =
|
|
function(variant, opt_clearBuffer) {
|
|
if (this.switchingPeriods_) {
|
|
// Store this action for later.
|
|
this.deferredVariant_ = variant;
|
|
this.deferredVariantClearBuffer_ = opt_clearBuffer || false;
|
|
} else {
|
|
// Act now.
|
|
this.streamingEngine_.switchVariant(variant, opt_clearBuffer || false);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Switches to the given text stream, deferring if needed.
|
|
* @param {shakaExtern.Stream} textStream
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.switchTextStream_ = function(textStream) {
|
|
if (this.switchingPeriods_) {
|
|
// Store this action for later.
|
|
this.deferredTextStream_ = textStream;
|
|
} else {
|
|
// Act now.
|
|
this.streamingEngine_.switchTextStream(textStream);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Verifies that the active streams according to the player match those in
|
|
* StreamingEngine.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.assertCorrectActiveStreams_ = function() {
|
|
if (!this.streamingEngine_ || !this.manifest_ || !goog.DEBUG) return;
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
|
|
var activeAudio = this.streamingEngine_.getActiveAudio();
|
|
var activeVideo = this.streamingEngine_.getActiveVideo();
|
|
var activeText = this.streamingEngine_.getActiveText();
|
|
|
|
/** @type {?shakaExtern.Stream} */
|
|
var mainStream = activeVideo || activeAudio;
|
|
if (!mainStream)
|
|
return;
|
|
|
|
var streamingPeriodIndex =
|
|
StreamUtils.findPeriodContainingStream(this.manifest_, mainStream);
|
|
var currentPeriodIndex =
|
|
this.manifest_.periods.indexOf(this.streamingEngine_.getCurrentPeriod());
|
|
if (streamingPeriodIndex < 0 || streamingPeriodIndex != currentPeriodIndex)
|
|
return;
|
|
|
|
var playerActive = this.activeStreamsByPeriod_[currentPeriodIndex] || {};
|
|
var activeStreams = [activeAudio, activeVideo, activeText];
|
|
activeStreams.forEach(function(stream) {
|
|
if (stream) {
|
|
var id = stream.id;
|
|
var type = stream.type;
|
|
|
|
if (type == ContentType.TEXT && this.deferredTextStream_) {
|
|
id = this.deferredTextStream_.id;
|
|
}
|
|
|
|
if (type == ContentType.AUDIO && this.deferredVariant_) {
|
|
id = this.deferredVariant_.audio.id;
|
|
}
|
|
|
|
if (type == ContentType.VIDEO && this.deferredVariant_) {
|
|
id = this.deferredVariant_.video.id;
|
|
}
|
|
|
|
goog.asserts.assert(
|
|
id == playerActive[type], 'Inconsistent active stream');
|
|
}
|
|
});
|
|
};
|
|
|
|
|
|
/** @private */
|
|
shaka.Player.prototype.updateTimeStats_ = function() {
|
|
// Only count while we're loaded.
|
|
if (!this.manifest_)
|
|
return;
|
|
|
|
var now = Date.now() / 1000;
|
|
if (this.buffering_)
|
|
this.stats_.bufferingTime += (now - this.lastTimeStatsUpdateTimestamp_);
|
|
else
|
|
this.stats_.playTime += (now - this.lastTimeStatsUpdateTimestamp_);
|
|
|
|
this.lastTimeStatsUpdateTimestamp_ = now;
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {number} time
|
|
* @return {number}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.adjustStartTime_ = function(time) {
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeAudio = this.streamingEngine_.getActiveAudio();
|
|
/** @type {?shakaExtern.Stream} */
|
|
var activeVideo = this.streamingEngine_.getActiveVideo();
|
|
/** @type {shakaExtern.Period} */
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
|
|
// This method is called after StreamingEngine.init resolves, this means that
|
|
// all the active streams have had createSegmentIndex called.
|
|
function getAdjustedTime(stream, time) {
|
|
if (!stream) return null;
|
|
var idx = stream.findSegmentPosition(time - period.startTime);
|
|
if (idx == null) return null;
|
|
var ref = stream.getSegmentReference(idx);
|
|
if (!ref) return null;
|
|
var refTime = ref.startTime + period.startTime;
|
|
goog.asserts.assert(refTime <= time, 'Segment should start before time');
|
|
return refTime;
|
|
}
|
|
|
|
var audioStartTime = getAdjustedTime(activeAudio, time);
|
|
var videoStartTime = getAdjustedTime(activeVideo, time);
|
|
|
|
// If we have both video and audio times, pick the larger one. If we picked
|
|
// the smaller one, that one will download an entire segment to buffer the
|
|
// difference.
|
|
if (videoStartTime != null && audioStartTime != null)
|
|
return Math.max(videoStartTime, audioStartTime);
|
|
else if (videoStartTime != null)
|
|
return videoStartTime;
|
|
else if (audioStartTime != null)
|
|
return audioStartTime;
|
|
else
|
|
return time;
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from NetworkingEngine.
|
|
*
|
|
* @param {number} deltaTimeMs
|
|
* @param {number} numBytes
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onSegmentDownloaded_ = function(deltaTimeMs, numBytes) {
|
|
if (this.abrManager_) {
|
|
// Abr manager might not exist during offline storage.
|
|
this.abrManager_.segmentDownloaded(deltaTimeMs, numBytes);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from PlayheadObserver.
|
|
*
|
|
* @param {boolean} buffering
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onBuffering_ = function(buffering) {
|
|
// Before setting |buffering_|, update the time spent in the previous state.
|
|
this.updateTimeStats_();
|
|
this.buffering_ = buffering;
|
|
this.updateState_();
|
|
|
|
if (this.playhead_)
|
|
this.playhead_.setBuffering(buffering);
|
|
|
|
var event = new shaka.util.FakeEvent('buffering', { 'buffering': buffering });
|
|
this.dispatchEvent(event);
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from PlayheadObserver.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onChangePeriod_ = function() {
|
|
this.onTracksChanged_();
|
|
};
|
|
|
|
|
|
/**
|
|
* Called from potential initiators of state change, or before returning stats
|
|
* to the user.
|
|
*
|
|
* This method decides if state has actually changed, updates the last entry,
|
|
* and adds a new one if needed.
|
|
*
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.updateState_ = function() {
|
|
if (this.destroyed_) return;
|
|
|
|
var newState;
|
|
if (this.buffering_) {
|
|
newState = 'buffering';
|
|
} else if (this.video_.ended) {
|
|
newState = 'ended';
|
|
} else if (this.video_.paused) {
|
|
newState = 'paused';
|
|
} else {
|
|
newState = 'playing';
|
|
}
|
|
|
|
var now = Date.now() / 1000;
|
|
if (this.stats_.stateHistory.length) {
|
|
var lastIndex = this.stats_.stateHistory.length - 1;
|
|
var lastEntry = this.stats_.stateHistory[lastIndex];
|
|
lastEntry.duration = now - lastEntry.timestamp;
|
|
|
|
if (newState == lastEntry.state) {
|
|
// The state has not changed, so do not add anything to the history.
|
|
return;
|
|
}
|
|
}
|
|
|
|
this.stats_.stateHistory.push({
|
|
timestamp: now,
|
|
state: newState,
|
|
duration: 0
|
|
});
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from Playhead.
|
|
*
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onSeek_ = function() {
|
|
if (this.playheadObserver_)
|
|
this.playheadObserver_.seeked();
|
|
if (this.streamingEngine_)
|
|
this.streamingEngine_.seeked();
|
|
};
|
|
|
|
|
|
/**
|
|
* Choose a variant through ABR manager.
|
|
* On error, dispatches an error event and returns null.
|
|
*
|
|
* @param {!Array.<shakaExtern.Variant>} variants
|
|
* @return {?shakaExtern.Variant}
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.chooseVariant_ = function(variants) {
|
|
goog.asserts.assert(this.config_, 'Must not be destroyed');
|
|
|
|
if (!variants || !variants.length) {
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MANIFEST,
|
|
shaka.util.Error.Code.RESTRICTIONS_CANNOT_BE_MET));
|
|
return null;
|
|
}
|
|
|
|
// Update abr manager with newly filtered variants.
|
|
this.abrManager_.setVariants(variants);
|
|
|
|
// Backward compatibility for the AbrManager plugin interface.
|
|
if (this.abrManager_['chooseStreams']) {
|
|
shaka.log.alwaysWarn('AbrManager API has changed. ' +
|
|
'AbrManager.chooseStreams() is deprecated. ' +
|
|
'Please implement AbrManager.chooseVariant() to upgrade. ' +
|
|
'The old API will be removed in v2.3.');
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
var mediaTypesToUpdate = ['video', 'audio'];
|
|
var chosen = this.abrManager_['chooseStreams'](mediaTypesToUpdate);
|
|
var chosenVariant = shaka.util.StreamUtils.getVariantByStreams(
|
|
chosen[ContentType.AUDIO], chosen[ContentType.VIDEO], variants);
|
|
return chosenVariant;
|
|
}
|
|
|
|
return this.abrManager_.chooseVariant();
|
|
};
|
|
|
|
|
|
/**
|
|
* Chooses streams from the given Period and switches to them.
|
|
* Called after a config change, a new text stream, a key status event, or an
|
|
* explicit language change.
|
|
*
|
|
* @param {!shakaExtern.Period} period
|
|
* @param {!boolean} clearBuffer
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.chooseStreamsAndSwitch_ = function(period, clearBuffer) {
|
|
goog.asserts.assert(this.config_, 'Must not be destroyed');
|
|
|
|
var variants = shaka.util.StreamUtils.filterVariantsByLanguageAndRole(
|
|
period, this.currentAudioLanguage_, this.currentVariantRole_);
|
|
var textStreams = shaka.util.StreamUtils.filterTextStreamsByLanguageAndRole(
|
|
period, this.currentTextLanguage_, this.currentTextRole_);
|
|
|
|
// Because we're running this after a config change (manual language change),
|
|
// a new text stream, or a key status event, and because switching to an
|
|
// active stream is a no-op, it is always okay to clear the buffer here.
|
|
var chosenVariant = this.chooseVariant_(variants);
|
|
if (chosenVariant) {
|
|
this.addVariantToSwitchHistory_(chosenVariant, /* fromAdaptation */ true);
|
|
this.switchVariant_(chosenVariant, clearBuffer);
|
|
}
|
|
|
|
var chosenText = textStreams[0];
|
|
if (chosenText) {
|
|
this.addTextStreamToSwitchHistory_(chosenText, /* fromAdaptation */ true);
|
|
this.switchTextStream_(chosenText);
|
|
}
|
|
|
|
// Send an adaptation event so that the UI can show the new language/tracks.
|
|
this.onAdaptation_();
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from StreamingEngine, invoked when a period starts.
|
|
*
|
|
* @param {!shakaExtern.Period} period
|
|
* @return {shaka.media.StreamingEngine.ChosenStreams} An object containing the
|
|
* chosen variant and text stream.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onChooseStreams_ = function(period) {
|
|
shaka.log.debug('onChooseStreams_', period);
|
|
goog.asserts.assert(this.config_, 'Must not be destroyed');
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
var StreamUtils = shaka.util.StreamUtils;
|
|
|
|
// We are switching Periods, so the AbrManager will be disabled. But if we
|
|
// want to abr.enabled, we do not want to call AbrManager.enable before
|
|
// canSwitch_ is called.
|
|
this.switchingPeriods_ = true;
|
|
this.abrManager_.disable();
|
|
|
|
shaka.log.debug('Choosing new streams after period changed');
|
|
|
|
// Create empty object first and initialize the fields through
|
|
// [] to allow field names to be expressions.
|
|
// TODO: this feedback system for language matches could be cleaned up
|
|
var languageMatches = {};
|
|
languageMatches[ContentType.AUDIO] = false;
|
|
languageMatches[ContentType.TEXT] = false;
|
|
|
|
var variants = StreamUtils.filterVariantsByLanguageAndRole(
|
|
period, this.currentAudioLanguage_, this.currentVariantRole_,
|
|
languageMatches);
|
|
|
|
var textStreams = StreamUtils.filterTextStreamsByLanguageAndRole(
|
|
period, this.currentTextLanguage_, this.currentTextRole_,
|
|
languageMatches);
|
|
|
|
shaka.log.v2('onChooseStreams_, variants and text streams: ',
|
|
variants, textStreams);
|
|
|
|
var chosenVariant = this.chooseVariant_(variants);
|
|
var chosenTextStream = textStreams[0] || null;
|
|
|
|
shaka.log.v2('onChooseStreams_, chosen=', chosenVariant, chosenTextStream);
|
|
|
|
// Ignore deferred variant or text streams. We are starting a new period,
|
|
// so any deferred switches must logically have been from an older period.
|
|
// Verify this in uncompiled mode.
|
|
if (goog.DEBUG) {
|
|
var deferredPeriodIndex;
|
|
var deferredPeriod;
|
|
|
|
// This assertion satisfies a compiler nullability check below.
|
|
goog.asserts.assert(this.manifest_, 'Manifest should exist!');
|
|
|
|
if (this.deferredVariant_) {
|
|
deferredPeriodIndex = StreamUtils.findPeriodContainingVariant(
|
|
this.manifest_, this.deferredVariant_);
|
|
deferredPeriod = this.manifest_.periods[deferredPeriodIndex];
|
|
goog.asserts.assert(
|
|
deferredPeriod != period,
|
|
'Mistakenly ignoring deferred variant from the same period!');
|
|
}
|
|
|
|
if (this.deferredTextStream_) {
|
|
deferredPeriodIndex = StreamUtils.findPeriodContainingStream(
|
|
this.manifest_, this.deferredTextStream_);
|
|
deferredPeriod = this.manifest_.periods[deferredPeriodIndex];
|
|
goog.asserts.assert(
|
|
deferredPeriod != period,
|
|
'Mistakenly ignoring deferred text stream from the same period!');
|
|
}
|
|
}
|
|
this.deferredVariant_ = null;
|
|
this.deferredTextStream_ = null;
|
|
|
|
if (chosenVariant) {
|
|
this.addVariantToSwitchHistory_(chosenVariant, /* fromAdaptation */ true);
|
|
}
|
|
if (chosenTextStream) {
|
|
this.addTextStreamToSwitchHistory_(
|
|
chosenTextStream, /* fromAdaptation */ true);
|
|
|
|
// If audio and text tracks have different languages, and the text track
|
|
// matches the user's preference, then show the captions. Only do this
|
|
// when we are choosing the initial tracks during startup.
|
|
var startingUp = !this.streamingEngine_.getActivePeriod();
|
|
if (startingUp) {
|
|
if (chosenVariant && chosenVariant.audio &&
|
|
languageMatches[ContentType.TEXT] &&
|
|
chosenTextStream.language != chosenVariant.audio.language) {
|
|
this.textDisplayer_.setTextVisibility(true);
|
|
this.onTextTrackVisibility_();
|
|
}
|
|
}
|
|
}
|
|
|
|
// Don't fire a tracks-changed event since we aren't inside the new Period
|
|
// yet.
|
|
return { variant: chosenVariant, text: chosenTextStream };
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from StreamingEngine, invoked when the period is set up.
|
|
*
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.canSwitch_ = function() {
|
|
shaka.log.debug('canSwitch_');
|
|
goog.asserts.assert(this.config_, 'Must not be destroyed');
|
|
|
|
this.switchingPeriods_ = false;
|
|
|
|
if (this.config_.abr.enabled)
|
|
this.abrManager_.enable();
|
|
|
|
// If we still have deferred switches, switch now.
|
|
if (this.deferredVariant_) {
|
|
this.streamingEngine_.switchVariant(
|
|
this.deferredVariant_, this.deferredVariantClearBuffer_);
|
|
this.deferredVariant_ = null;
|
|
}
|
|
if (this.deferredTextStream_) {
|
|
this.streamingEngine_.switchTextStream(this.deferredTextStream_);
|
|
this.deferredTextStream_ = null;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from StreamingEngine.
|
|
*
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onManifestUpdate_ = function() {
|
|
if (this.parser_ && this.parser_.update)
|
|
this.parser_.update();
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from StreamingEngine.
|
|
*
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onSegmentAppended_ = function() {
|
|
if (this.playhead_)
|
|
this.playhead_.onSegmentAppended();
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from AbrManager.
|
|
*
|
|
* @param {shakaExtern.Variant} variant
|
|
* @param {boolean=} opt_clearBuffer
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.switch_ = function(variant, opt_clearBuffer) {
|
|
shaka.log.debug('switch_');
|
|
goog.asserts.assert(this.config_.abr.enabled,
|
|
'AbrManager should not call switch while disabled!');
|
|
goog.asserts.assert(!this.switchingPeriods_,
|
|
'AbrManager should not call switch while transitioning between Periods!');
|
|
|
|
this.addVariantToSwitchHistory_(variant, /* fromAdaptation */ true);
|
|
|
|
if (!this.streamingEngine_) {
|
|
// There's no way to change it.
|
|
return;
|
|
}
|
|
|
|
this.streamingEngine_.switchVariant(variant, opt_clearBuffer || false);
|
|
this.onAdaptation_();
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from v2.1 or v2.0 AbrManager plugins, for backward compatibility.
|
|
* To be removed in v2.3.
|
|
*
|
|
* @param {!Object.<shaka.util.ManifestParserUtils.ContentType,
|
|
* !shakaExtern.Stream>} streamsByType
|
|
* @param {boolean=} opt_clearBuffer
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.switchV21_ = function(streamsByType, opt_clearBuffer) {
|
|
if (!this.streamingEngine_) {
|
|
// There's no way to change it.
|
|
return;
|
|
}
|
|
|
|
var ContentType = shaka.util.ManifestParserUtils.ContentType;
|
|
var activePeriod = this.streamingEngine_.getActivePeriod();
|
|
|
|
var variant = shaka.util.StreamUtils.getVariantByStreams(
|
|
streamsByType[ContentType.AUDIO], streamsByType[ContentType.VIDEO],
|
|
activePeriod ? activePeriod.variants : []);
|
|
|
|
goog.asserts.assert(variant, 'Could not find variant to switch!');
|
|
if (variant) {
|
|
this.switch_(variant, opt_clearBuffer);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* Dispatches a 'adaptation' event.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onAdaptation_ = function() {
|
|
// In the next frame, dispatch a 'adaptation' event.
|
|
// This gives StreamingEngine time to absorb the changes before the user
|
|
// tries to query them.
|
|
Promise.resolve().then(function() {
|
|
if (this.destroyed_) return;
|
|
var event = new shaka.util.FakeEvent('adaptation');
|
|
this.dispatchEvent(event);
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/**
|
|
* Dispatches a 'trackschanged' event.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onTracksChanged_ = function() {
|
|
// In the next frame, dispatch a 'trackschanged' event.
|
|
// This gives StreamingEngine time to absorb the changes before the user
|
|
// tries to query them.
|
|
Promise.resolve().then(function() {
|
|
if (this.destroyed_) return;
|
|
var event = new shaka.util.FakeEvent('trackschanged');
|
|
this.dispatchEvent(event);
|
|
}.bind(this));
|
|
};
|
|
|
|
|
|
/** @private */
|
|
shaka.Player.prototype.onTextTrackVisibility_ = function() {
|
|
var event = new shaka.util.FakeEvent('texttrackvisibility');
|
|
this.dispatchEvent(event);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!shaka.util.Error} error
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onError_ = function(error) {
|
|
// Errors dispatched after destroy is called are irrelevant.
|
|
if (this.destroyed_) return;
|
|
|
|
goog.asserts.assert(error instanceof shaka.util.Error, 'Wrong error type!');
|
|
|
|
var event = new shaka.util.FakeEvent('error', { 'detail': error });
|
|
this.dispatchEvent(event);
|
|
if (event.defaultPrevented) {
|
|
error.handled = true;
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {shakaExtern.TimelineRegionInfo} region
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onTimelineRegionAdded_ = function(region) {
|
|
if (this.playheadObserver_) {
|
|
this.playheadObserver_.addTimelineRegion(region);
|
|
} else {
|
|
this.pendingTimelineRegions_.push(region);
|
|
}
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!Event} event
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onEvent_ = function(event) {
|
|
this.dispatchEvent(event);
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!Event} event
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onVideoError_ = function(event) {
|
|
if (!this.video_.error) return;
|
|
|
|
var code = this.video_.error.code;
|
|
if (code == 1 /* MEDIA_ERR_ABORTED */) {
|
|
// Ignore this error code, which should only occur when navigating away or
|
|
// deliberately stopping playback of HTTP content.
|
|
return;
|
|
}
|
|
|
|
// Extra error information from MS Edge and IE11:
|
|
var extended = this.video_.error.msExtendedCode;
|
|
if (extended) {
|
|
// Convert to unsigned:
|
|
if (extended < 0) {
|
|
extended += Math.pow(2, 32);
|
|
}
|
|
// Format as hex:
|
|
extended = extended.toString(16);
|
|
}
|
|
|
|
// Extra error information from Chrome:
|
|
var message = this.video_.error.message;
|
|
|
|
this.onError_(new shaka.util.Error(
|
|
shaka.util.Error.Severity.CRITICAL,
|
|
shaka.util.Error.Category.MEDIA,
|
|
shaka.util.Error.Code.VIDEO_ERROR,
|
|
code, extended, message));
|
|
};
|
|
|
|
|
|
/**
|
|
* @param {!Object.<string, string>} keyStatusMap A map of hex key IDs to
|
|
* statuses.
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onKeyStatus_ = function(keyStatusMap) {
|
|
goog.asserts.assert(this.streamingEngine_, 'Should have been initialized.');
|
|
// 'usable', 'released', 'output-downscaled', 'status-pending' are statuses
|
|
// of the usable keys.
|
|
// 'expired' status is being handled separately in DrmEngine.
|
|
var restrictedStatuses = ['output-restricted', 'internal-error'];
|
|
|
|
var period = this.streamingEngine_.getCurrentPeriod();
|
|
var tracksChanged = false;
|
|
|
|
// If EME is using a synthetic key, the only key is '00' (a single 0 byte).
|
|
// In this case, it is only used to report global success/failure.
|
|
// See note about old platforms in: https://goo.gl/KtQMja
|
|
var isGlobalStatus = Object.keys(keyStatusMap).length == 1 &&
|
|
Object.keys(keyStatusMap)[0] == '00';
|
|
|
|
if (isGlobalStatus) {
|
|
shaka.log.warning(
|
|
'Got a synthetic key status event, so we don\'t know the real key ' +
|
|
'statuses. If we don\'t have all the keys, you\'ll need to set ' +
|
|
'restrictions so we don\'t select those tracks.');
|
|
}
|
|
|
|
period.variants.forEach(function(variant) {
|
|
var streams = [];
|
|
if (variant.audio) streams.push(variant.audio);
|
|
if (variant.video) streams.push(variant.video);
|
|
|
|
streams.forEach(function(stream) {
|
|
var originalAllowed = variant.allowedByKeySystem;
|
|
|
|
// Only update if we have a key ID for the stream. If the key isn't
|
|
// present, then we don't have that key and it should be restricted.
|
|
if (stream.keyId) {
|
|
var keyStatus = keyStatusMap[isGlobalStatus ? '00' : stream.keyId];
|
|
variant.allowedByKeySystem =
|
|
!!keyStatus && restrictedStatuses.indexOf(keyStatus) < 0;
|
|
}
|
|
|
|
if (originalAllowed != variant.allowedByKeySystem) {
|
|
tracksChanged = true;
|
|
}
|
|
});
|
|
});
|
|
|
|
// TODO: Get StreamingEngine to track variants and create getActiveVariant()
|
|
var activeAudio = this.streamingEngine_.getActiveAudio();
|
|
var activeVideo = this.streamingEngine_.getActiveVideo();
|
|
var activeVariant = shaka.util.StreamUtils.getVariantByStreams(
|
|
activeAudio, activeVideo, period.variants);
|
|
|
|
if (activeVariant && !activeVariant.allowedByKeySystem) {
|
|
shaka.log.debug('Choosing new streams after key status changed');
|
|
this.chooseStreamsAndSwitch_(period, true);
|
|
}
|
|
|
|
if (tracksChanged)
|
|
this.onTracksChanged_();
|
|
};
|
|
|
|
|
|
/**
|
|
* Callback from DrmEngine
|
|
* @param {string} keyId
|
|
* @param {number} expiration
|
|
* @private
|
|
*/
|
|
shaka.Player.prototype.onExpirationUpdated_ = function(keyId, expiration) {
|
|
if (this.parser_ && this.parser_.onExpirationUpdated)
|
|
this.parser_.onExpirationUpdated(keyId, expiration);
|
|
|
|
var event = new shaka.util.FakeEvent('expirationupdated');
|
|
this.dispatchEvent(event);
|
|
};
|