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1x 2x 1x 1x 1x 1x 2x 2x 2x 2x 2x 57x 57x 57x 57x 57x 57x 57x 57x 57x 57x 57x 57x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 57x 57x 57x 57x 57x 57x 30x 27x 27x 30x 12x 30x 27x 27x 30x 27x 30x 12x 30x 30x 30x 30x 16x 57x 16x 19x 49x 1x 1x 4x 4x 4x 2x 1x 1x 16x 16x 16x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 59x 2x 15x 15x 15x 27x 27x 27x 1x | /**
* The copyright in this software is being made available under the BSD License,
* included below. This software may be subject to other third party and contributor
* rights, including patent rights, and no such rights are granted under this license.
*
* Copyright (c) 2013, Dash Industry Forum.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation and/or
* other materials provided with the distribution.
* * Neither the name of Dash Industry Forum nor the names of its
* contributors may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS AS IS AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
import BlacklistController from './controllers/BlacklistController.js';
import BoxParser from './utils/BoxParser.js';
import Constants from './constants/Constants.js';
import DashConstants from '../dash/constants/DashConstants.js';
import DashJSError from './vo/DashJSError.js';
import Debug from '../core/Debug.js';
import Errors from '../core/errors/Errors.js';
import EventBus from '../core/EventBus.js';
import Events from '../core/events/Events.js';
import ExternalMediaSource from './ExternalMediaSource.js';
import FactoryMaker from '../core/FactoryMaker.js';
import FragmentController from './controllers/FragmentController.js';
import MediaInfoSelectionInput from './vo/MediaInfoSelectionInput.js';
import MediaPlayerEvents from './MediaPlayerEvents.js';
import StreamProcessor from './StreamProcessor.js';
import ThumbnailController from './thumbnail/ThumbnailController.js';
import URLUtils from './utils/URLUtils.js';
const MEDIA_TYPES = [Constants.VIDEO, Constants.AUDIO, Constants.TEXT, Constants.MUXED, Constants.IMAGE];
function Stream(config) {
config = config || {};
const context = this.context;
const eventBus = EventBus(context).getInstance();
const urlUtils = URLUtils(context).getInstance();
const manifestModel = config.manifestModel;
const mediaPlayerModel = config.mediaPlayerModel;
const dashMetrics = config.dashMetrics;
const manifestUpdater = config.manifestUpdater;
const adapter = config.adapter;
const timelineConverter = config.timelineConverter;
const capabilities = config.capabilities;
const errHandler = config.errHandler;
const abrController = config.abrController;
const playbackController = config.playbackController;
const throughputController = config.throughputController;
const eventController = config.eventController;
const mediaController = config.mediaController;
const protectionController = config.protectionController;
const textController = config.textController;
const videoModel = config.videoModel;
let streamInfo = config.streamInfo;
const settings = config.settings;
let boxParser,
debug,
fragmentController,
hasAudioTrack,
hasFinishedBuffering,
hasVideoTrack,
instance,
isActive,
isEndedEventSignaled,
isInitialized,
logger,
preloaded,
segmentBlacklistController,
streamProcessors,
thumbnailController,
trackChangedEvents;
/**
* Setup the stream
*/
function setup() {
try {
debug = Debug(context).getInstance();
logger = debug.getLogger(instance);
resetInitialSettings();
boxParser = BoxParser(context).getInstance();
segmentBlacklistController = BlacklistController(context).create({
updateEventName: Events.SEGMENT_LOCATION_BLACKLIST_CHANGED,
addBlacklistEventName: Events.SEGMENT_LOCATION_BLACKLIST_ADD
});
fragmentController = FragmentController(context).create({
streamInfo: streamInfo,
mediaPlayerModel: mediaPlayerModel,
dashMetrics: dashMetrics,
errHandler: errHandler,
settings: settings,
boxParser: boxParser,
dashConstants: DashConstants,
urlUtils: urlUtils
});
} catch (e) {
throw e;
}
}
/**
* Initialize the events
*/
function initialize() {
registerEvents();
registerProtectionEvents();
textController.initializeForStream(streamInfo);
eventBus.trigger(Events.STREAM_UPDATED, { streamInfo: streamInfo });
}
/**
* Register the streaming events
*/
function registerEvents() {
eventBus.on(Events.BUFFERING_COMPLETED, _onBufferingCompleted, instance);
eventBus.on(Events.INBAND_EVENTS, _onInbandEvents, instance);
eventBus.on(Events.DATA_UPDATE_COMPLETED, _onDataUpdateCompleted, instance);
eventBus.on(MediaPlayerEvents.PLAYBACK_SEEKED, _onPlaybackSeeked, instance);
}
/**
* Unregister the streaming events
*/
function unRegisterEvents() {
eventBus.off(Events.BUFFERING_COMPLETED, _onBufferingCompleted, instance);
eventBus.off(Events.INBAND_EVENTS, _onInbandEvents, instance);
eventBus.off(Events.DATA_UPDATE_COMPLETED, _onDataUpdateCompleted, instance);
eventBus.off(MediaPlayerEvents.PLAYBACK_SEEKED, _onPlaybackSeeked, instance);
}
/**
* Register the protection events
*/
function registerProtectionEvents() {
if (protectionController) {
eventBus.on(Events.KEY_ERROR, _onProtectionError, instance);
eventBus.on(Events.SERVER_CERTIFICATE_UPDATED, _onProtectionError, instance);
eventBus.on(Events.LICENSE_REQUEST_COMPLETE, _onProtectionError, instance);
eventBus.on(Events.KEY_SYSTEM_SELECTED, _onProtectionError, instance);
eventBus.on(Events.KEY_SESSION_CREATED, _onProtectionError, instance);
}
}
/**
* Unregister the protection events
*/
function unRegisterProtectionEvents() {
if (protectionController) {
eventBus.off(Events.KEY_ERROR, _onProtectionError, instance);
eventBus.off(Events.SERVER_CERTIFICATE_UPDATED, _onProtectionError, instance);
eventBus.off(Events.LICENSE_REQUEST_COMPLETE, _onProtectionError, instance);
eventBus.off(Events.KEY_SYSTEM_SELECTED, _onProtectionError, instance);
eventBus.off(Events.KEY_SESSION_CREATED, _onProtectionError, instance);
}
}
/**
* Returns the stream id
* @return {*|null}
*/
function getStreamId() {
return streamInfo ? streamInfo.id : null;
}
/**
* Activates Stream by re-initializing some of its components
* @param {MediaSource} mediaSource
* @param {array} previousSourceBufferSinks
* @param representationsFromPreviousPeriod
* @memberof Stream#
*/
function activate(mediaSource, previousSourceBufferSinks, representationsFromPreviousPeriod = []) {
return new Promise((resolve, reject) => {
if (isActive) {
resolve();
return;
}
if (getPreloaded()) {
isActive = true;
eventBus.trigger(Events.STREAM_ACTIVATED, {
streamInfo
});
resolve();
return;
}
_initializeMedia(mediaSource, previousSourceBufferSinks, representationsFromPreviousPeriod)
.then(() => {
isActive = true;
if (representationsFromPreviousPeriod && representationsFromPreviousPeriod.length > 0) {
startScheduleControllers();
}
eventBus.trigger(Events.STREAM_ACTIVATED, {
streamInfo
});
resolve();
})
.catch((e) => {
reject(e);
});
});
}
function startPreloading(mediaSource, previousBuffers, representationsFromPreviousPeriod = []) {
return new Promise((resolve, reject) => {
Iif (getPreloaded()) {
reject();
return;
}
logger.info(`[startPreloading] Preloading next stream with id ${getId()}`);
_setPreloaded(true);
_commonMediaInitialization(mediaSource, previousBuffers, representationsFromPreviousPeriod)
.then(() => {
for (let i = 0; i < streamProcessors.length && streamProcessors[i]; i++) {
streamProcessors[i].setExplicitBufferingTime(getStartTime());
streamProcessors[i].getScheduleController().startScheduleTimer();
}
resolve();
})
.catch(() => {
_setPreloaded(false);
reject();
});
});
}
/**
*
* @param {object} mediaSource
* @param {array} previousSourceBufferSinks
* @param representationsFromPreviousPeriod
* @return {Promise<Array>}
* @private
*/
function _initializeMedia(mediaSource, previousSourceBufferSinks, representationsFromPreviousPeriod = []) {
return _commonMediaInitialization(mediaSource, previousSourceBufferSinks, representationsFromPreviousPeriod);
}
/**
*
* @param {object} mediaSource
* @param {array} previousSourceBufferSinks
* @return {Promise<array>}
* @private
*/
function _commonMediaInitialization(mediaSource, previousSourceBufferSinks, representationsFromPreviousPeriod) {
return new Promise((resolve, reject) => {
checkConfig();
_addInlineEvents();
let element = videoModel.getElement();
const promises = [];
MEDIA_TYPES.forEach((mediaType) => {
// If we are preloading without a video element we can not start texttrack handling.
if (!(mediaType === Constants.TEXT && !mediaSource) && (mediaType !== Constants.VIDEO || (!element || (element && (/^VIDEO$/i).test(element.nodeName))))) {
const representationFromPreviousPeriod = representationsFromPreviousPeriod.find((representation) => {
return representation.mediaInfo.type === mediaType
})
promises.push(_initializeMediaForType(mediaType, mediaSource, representationFromPreviousPeriod));
}
});
Promise.all(promises)
.then(() => {
return _createBufferSinks(previousSourceBufferSinks)
})
.then((bufferSinks) => {
if (streamProcessors.length === 0) {
const msg = 'No streams to play.';
errHandler.error(new DashJSError(Errors.MANIFEST_ERROR_ID_NOSTREAMS_CODE, msg, manifestModel.getValue()));
logger.fatal(msg);
} else {
_initializationCompleted();
}
if (mediaSource) {
// All mediaInfos for texttracks are added to the TextSourceBuffer by now. We can start creating the tracks
textController.createTracks(streamInfo);
}
resolve(bufferSinks);
})
.catch((e) => {
reject(e);
});
});
}
/**
* We call this function if segments have been preloaded without a video element. Once the video element is attached MSE is available
* @param mediaSource
* @returns {Promise<unknown>}
*/
function initializeForTextWithMediaSource(mediaSource) {
return new Promise((resolve, reject) => {
_initializeMediaForType(Constants.TEXT, mediaSource, null)
.then(() => {
return createBufferSinkForText()
})
.then(() => {
textController.createTracks(streamInfo);
resolve()
})
.catch((e) => {
reject(e);
})
})
}
/**
* Initialize for a given media type. Creates a corresponding StreamProcessor
* @param {string} type
* @param {object} mediaSource
* @private
*/
function _initializeMediaForType(type, mediaSource, representationFromPreviousPeriod) {
let allMediaForType = adapter.getAllMediaInfoForType(streamInfo, type);
let embeddedMediaInfos = [];
let mediaInfo = null;
let initialMediaInfo;
let enhancementMediaInfoIndex = -1;
Iif (!allMediaForType || allMediaForType.length === 0) {
logger.info('No ' + type + ' data.');
return Promise.resolve();
}
if (type === Constants.VIDEO) {
hasVideoTrack = true;
}
Iif (type === Constants.AUDIO) {
hasAudioTrack = true;
}
for (let i = 0, ln = allMediaForType.length; i < ln; i++) {
mediaInfo = allMediaForType[i];
Iif (type === Constants.TEXT && !!mediaInfo.isEmbedded) {
textController.addEmbeddedTrack(streamInfo, mediaInfo);
embeddedMediaInfos.push(mediaInfo);
}
if (_isMediaSupported(mediaInfo)) {
mediaController.addTrack(mediaInfo);
}
Iif (mediaInfo.type === Constants.ENHANCEMENT) {
enhancementMediaInfoIndex = i;
}
}
Iif (embeddedMediaInfos.length > 0) {
mediaController.setInitialMediaSettingsForType(type, streamInfo);
textController.addMediaInfosToBuffer(streamInfo, type, embeddedMediaInfos);
}
// Filter out embedded text track before creating StreamProcessor
allMediaForType = allMediaForType.filter(mediaInfo => {
return !mediaInfo.isEmbedded;
});
Iif (allMediaForType.length === 0) {
return Promise.resolve();
}
Iif (type === Constants.IMAGE) {
thumbnailController = ThumbnailController(context).create({
streamInfo: streamInfo,
adapter: adapter,
baseURLController: config.baseURLController,
timelineConverter: config.timelineConverter,
debug: debug,
eventBus: eventBus,
events: Events,
dashConstants: DashConstants,
dashMetrics: config.dashMetrics,
segmentBaseController: config.segmentBaseController
});
thumbnailController.initialize();
return Promise.resolve();
}
eventBus.trigger(Events.STREAM_INITIALIZING, {
streamInfo: streamInfo,
mediaInfo: mediaInfo
});
mediaController.setInitialMediaSettingsForType(type, streamInfo);
let streamProcessor = _createStreamProcessor(allMediaForType, mediaSource, type);
if (enhancementMediaInfoIndex >= 0) {
// An adaptation set, mapped to mediaInfo, of enhancement type was found so a stream processor shall be created for it
// the enhancement stream processor will work in parallel to the media stream processor it enhances
let enhancementMediaSource = new ExternalMediaSource(eventBus);
enhancementMediaSource.open();
enhancementMediaSource.duration = streamInfo.manifestInfo.duration;
let enhancementStreamProcessor = _createStreamProcessor(allMediaForType, enhancementMediaSource, Constants.ENHANCEMENT);
enhancementStreamProcessor.selectMediaInfo(new MediaInfoSelectionInput({ newMediaInfo: allMediaForType[enhancementMediaInfoIndex] }));
streamProcessor.setEnhancementStreamProcessor(enhancementStreamProcessor);
}
initialMediaInfo = mediaController.getCurrentTrackFor(type, streamInfo.id);
if (initialMediaInfo) {
// In case of mixed fragmented and embedded text tracks, check if initial selected text track is not an embedded track
const newMediaInfo = type !== Constants.TEXT || !initialMediaInfo.isEmbedded ? initialMediaInfo : allMediaForType[0];
const mediaInfoSelectionInput = new MediaInfoSelectionInput({
newMediaInfo,
previouslySelectedRepresentation: representationFromPreviousPeriod
});
return streamProcessor.selectMediaInfo(mediaInfoSelectionInput);
}
return Promise.resolve();
}
function _isMediaSupported(mediaInfo) {
const type = mediaInfo ? mediaInfo.type : null;
let msg;
Iif (type === Constants.MUXED) {
msg = 'Multiplexed representations are intentionally not supported, as they are not compliant with the DASH-AVC/264 guidelines';
logger.fatal(msg);
errHandler.error(new DashJSError(Errors.MANIFEST_ERROR_ID_MULTIPLEXED_CODE, msg, manifestModel.getValue()));
return false;
}
Iif (type === Constants.TEXT || type === Constants.IMAGE) {
return true;
}
Iif (!!mediaInfo.contentProtection && mediaInfo.contentProtection.length > 0 && !capabilities.supportsEncryptedMedia()) {
errHandler.error(new DashJSError(Errors.CAPABILITY_MEDIAKEYS_ERROR_CODE, Errors.CAPABILITY_MEDIAKEYS_ERROR_MESSAGE));
return false;
}
return true;
}
/**
* Creates the StreamProcessor for a given media type.
* @param {array} allMediaForType
* @param {object} mediaSource
* @param {object} streamProcessorMediaType
* @private
*/
function _createStreamProcessor(allMediaForType, mediaSource, streamProcessorMediaType) {
const mediaInfo = (allMediaForType && allMediaForType.length > 0) ? allMediaForType.filter(m => (m.type === streamProcessorMediaType))[0] : null;
let fragmentModel = fragmentController.getModel(mediaInfo ? mediaInfo.type : null);
const type = mediaInfo ? mediaInfo.type : null;
const mimeType = mediaInfo ? mediaInfo.mimeType : null;
const isFragmented = mediaInfo ? mediaInfo.isFragmented : null;
let streamProcessor = StreamProcessor(context).create({
abrController,
adapter,
baseURLController: config.baseURLController,
boxParser,
capabilities,
dashMetrics: config.dashMetrics,
errHandler,
fragmentModel,
manifestModel,
mediaController,
mediaPlayerModel,
mimeType,
playbackController,
segmentBaseController: config.segmentBaseController,
segmentBlacklistController,
settings,
streamInfo,
textController,
throughputController,
timelineConverter,
type,
});
streamProcessor.initialize(mediaSource, hasVideoTrack, isFragmented);
streamProcessors.push(streamProcessor);
streamProcessor.setMediaInfoArray(allMediaForType);
if (type === Constants.TEXT) {
textController.addMediaInfosToBuffer(streamInfo, type, allMediaForType, fragmentModel);
}
return streamProcessor;
}
/**
* Creates the SourceBufferSink objects for all StreamProcessors
* @param {array} previousSourceBufferSinks
* @return {Promise<object>}
* @private
*/
function _createBufferSinks(previousSourceBufferSinks) {
return new Promise((resolve) => {
const buffers = {};
const promises = streamProcessors.map((sp) => {
const oldRepresentation = sp.getRepresentation();
return sp.createBufferSinks(previousSourceBufferSinks, oldRepresentation);
});
Promise.all(promises)
.then((bufferSinks) => {
bufferSinks.forEach((sink) => {
if (sink) {
buffers[sink.getType()] = sink;
}
});
resolve(buffers);
})
.catch(() => {
resolve(buffers);
});
});
}
function createBufferSinkForText() {
const sp = _getProcessorByType(Constants.TEXT);
if (sp) {
return sp.createBufferSinks()
}
return Promise.resolve();
}
/**
* Partially resets some of the Stream elements. This function is called when preloading of streams is canceled or a stream switch occurs.
* @memberof Stream#
* @param {boolean} keepBuffers
*/
function deactivate(keepBuffers) {
let ln = streamProcessors ? streamProcessors.length : 0;
const errored = false;
for (let i = 0; i < ln; i++) {
let fragmentModel = streamProcessors[i].getFragmentModel();
fragmentModel.abortRequests();
fragmentModel.resetInitialSettings();
streamProcessors[i].reset(errored, keepBuffers);
}
if (textController) {
textController.deactivateStream(streamInfo);
}
Iif (thumbnailController) {
thumbnailController.reset();
thumbnailController = null;
}
streamProcessors = [];
isActive = false;
hasFinishedBuffering = false;
_setPreloaded(false);
setIsEndedEventSignaled(false);
eventBus.trigger(Events.STREAM_DEACTIVATED, { streamInfo });
}
function getIsActive() {
return isActive;
}
function setMediaSource(mediaSource) {
return new Promise((resolve, reject) => {
const promises = [];
for (let i = 0; i < streamProcessors.length;) {
if (_isMediaSupported(streamProcessors[i].getMediaInfo())) {
promises.push(streamProcessors[i].setMediaSource(mediaSource));
i++;
} else {
streamProcessors[i].reset();
streamProcessors.splice(i, 1);
}
}
Promise.all(promises)
.then(() => {
for (let i = 0; i < streamProcessors.length; i++) {
//Adding of new tracks to a stream processor isn't guaranteed by the spec after the METADATA_LOADED state
//so do this after the buffers are created above.
streamProcessors[i].dischargePreBuffer();
}
if (streamProcessors.length === 0) {
const msg = 'No streams to play.';
errHandler.error(new DashJSError(Errors.MANIFEST_ERROR_ID_NOSTREAMS_CODE, msg + 'nostreams', manifestModel.getValue()));
logger.fatal(msg);
}
resolve();
})
.catch((e) => {
logger.error(e);
reject(e);
})
})
}
function resetInitialSettings(keepBuffers) {
deactivate(keepBuffers);
isInitialized = false;
hasVideoTrack = false;
hasAudioTrack = false;
isEndedEventSignaled = false;
trackChangedEvents = [];
}
function reset(keepBuffers) {
if (fragmentController) {
fragmentController.reset();
fragmentController = null;
}
if (abrController && streamInfo) {
abrController.clearDataForStream(streamInfo.id);
}
if (segmentBlacklistController) {
segmentBlacklistController.reset();
segmentBlacklistController = null;
}
if (textController && streamInfo) {
textController.clearDataForStream(streamInfo.id);
}
if (mediaController && streamInfo) {
mediaController.clearDataForStream(streamInfo.id);
}
resetInitialSettings(keepBuffers);
streamInfo = null;
unRegisterEvents();
unRegisterProtectionEvents();
}
function getDuration() {
return streamInfo ? streamInfo.duration : NaN;
}
function getIsEndedEventSignaled() {
return isEndedEventSignaled;
}
function setIsEndedEventSignaled(value) {
isEndedEventSignaled = value;
}
function getStartTime() {
return streamInfo ? streamInfo.start : NaN;
}
function getId() {
return streamInfo ? streamInfo.id : null;
}
function getStreamInfo() {
return streamInfo;
}
function getHasAudioTrack() {
return hasAudioTrack;
}
function getHasVideoTrack() {
return hasVideoTrack;
}
function getThumbnailController() {
return thumbnailController;
}
function checkConfig() {
Iif (!videoModel || !abrController) {
throw new Error(Constants.MISSING_CONFIG_ERROR);
}
}
/**
* @param {string} type
* @returns {Array}
* @memberof Stream#
*/
function getRepresentationsByType(type) {
checkConfig();
if (type === Constants.IMAGE) {
if (!thumbnailController) {
return [];
}
return thumbnailController.getPossibleVoRepresentations();
}
const mediaInfo = _getMediaInfo(type);
return abrController.getPossibleVoRepresentationsFilteredBySettings(mediaInfo, true);
}
/**
* @param {string} type
* @param {string} id
* @returns {Array}
* @memberof Stream#
*/
function getRepresentationForTypeById(type, id) {
let possibleVoRepresentations;
if (type === Constants.IMAGE) {
if (!thumbnailController) {
return null;
}
possibleVoRepresentations = thumbnailController.getPossibleVoRepresentations();
} else {
const mediaInfos = _getAllMediaInfos(type);
possibleVoRepresentations = mediaInfos.flatMap((mediaInfo) => {
return abrController.getPossibleVoRepresentationsFilteredBySettings(mediaInfo, true);
})
}
if (!possibleVoRepresentations || possibleVoRepresentations.length === 0) {
return null
}
const targetReps = possibleVoRepresentations.filter((rep) => {
return rep.id === id
})
return targetReps && targetReps.length > 0 ? targetReps[0] : null;
}
/**
* @param {string} type
* @param {number} index
* @returns {Array}
* @memberof Stream#
*/
function getRepresentationForTypeByIndex(type, index) {
let possibleVoRepresentations;
if (type === Constants.IMAGE) {
if (!thumbnailController) {
return null;
}
possibleVoRepresentations = thumbnailController.getPossibleVoRepresentations();
} else {
const mediaInfo = _getMediaInfo(type);
possibleVoRepresentations = abrController.getPossibleVoRepresentationsFilteredBySettings(mediaInfo, true);
}
index = Math.max(Math.min(index, possibleVoRepresentations.length - 1), 0)
return possibleVoRepresentations[index];
}
function _onProtectionError(event) {
if (event.error) {
errHandler.error(event.error);
logger.fatal(event.error.message);
}
}
function triggerProtectionError(event) {
_onProtectionError(event);
}
function prepareTrackChange(e) {
if (!isActive || !streamInfo) {
return;
}
hasFinishedBuffering = false;
let newMediaInfo = e.newMediaInfo;
let manifest = manifestModel.getValue();
let processor = getProcessorForMediaInfo(newMediaInfo);
if (!processor) {
return;
}
let currentTime = playbackController.getTime();
logger.info('Stream - Process track changed at current time ' + currentTime);
// Applies only for MSS streams
if (manifest.refreshManifestOnSwitchTrack) {
trackChangedEvents.push(e);
if (!manifestUpdater.getIsUpdating()) {
logger.debug('Stream - Refreshing manifest for switch track');
manifestUpdater.refreshManifest();
}
} else {
processor.clearScheduleTimer();
processor.setTrackSwitchInProgress(true);
const oldRepresentation = processor.getRepresentation();
processor.selectMediaInfo(new MediaInfoSelectionInput({ newMediaInfo }))
.then(() => {
const replaceBuffer = e && e.options && e.options.hasOwnProperty('replaceBuffer') ? e.options.replaceBuffer : false;
return processor.prepareTrackSwitch(oldRepresentation, replaceBuffer);
})
.then(() => {
processor.setTrackSwitchInProgress(false);
})
}
}
function prepareQualityChange(e) {
const processor = _getProcessorByType(e.mediaType);
if (processor) {
processor.prepareQualityChange(e);
}
}
function _addInlineEvents() {
if (eventController) {
const events = adapter.getEventsFor(streamInfo);
Iif (events && events.length > 0) {
eventController.addInlineEvents(events, streamInfo.id);
}
}
}
function _getMediaInfo(type) {
let streamProcessor = _getStreamProcessorForType(type);
if (streamProcessor) {
return streamProcessor.getMediaInfo();
}
return null;
}
function _getAllMediaInfos(type) {
let streamProcessor = _getStreamProcessorForType(type);
if (streamProcessor) {
return streamProcessor.getAllMediaInfos();
}
return [];
}
function _getStreamProcessorForType(type) {
if (!type) {
return null
}
return streamProcessors.find((streamProcessor) => {
return streamProcessor.getType() === type;
})
}
function _onBufferingCompleted() {
let processors = getStreamProcessors();
const ln = processors.length;
if (ln === 0) {
logger.warn('onBufferingCompleted - can\'t trigger STREAM_BUFFERING_COMPLETED because no streamProcessor is defined');
return;
}
// if there is at least one buffer controller that has not completed buffering yet do nothing
for (let i = 0; i < ln; i++) {
//if audio or video buffer is not buffering completed state, do not send STREAM_BUFFERING_COMPLETED
if (!processors[i].isBufferingCompleted() && (processors[i].getType() === Constants.AUDIO || processors[i].getType() === Constants.VIDEO)) {
logger.debug('onBufferingCompleted - One streamProcessor has finished but', processors[i].getType(), 'one is not buffering completed');
return;
}
}
logger.debug('onBufferingCompleted - trigger STREAM_BUFFERING_COMPLETED');
hasFinishedBuffering = true;
eventBus.trigger(Events.STREAM_BUFFERING_COMPLETED, { streamInfo: streamInfo }, { streamInfo });
}
function _onInbandEvents(e) {
if (eventController) {
eventController.addInbandEvents(e.events, streamInfo.id);
}
}
function _onDataUpdateCompleted() {
_initializationCompleted();
}
function _onPlaybackSeeked() {
_addInlineEvents();
}
function getProcessorForMediaInfo(mediaInfo) {
if (!mediaInfo || !mediaInfo.type) {
return null;
}
return _getProcessorByType(mediaInfo.type);
}
function _getProcessorByType(type) {
if (!type) {
return null;
}
let processors = getStreamProcessors();
return processors.filter(function (processor) {
return (processor.getType() === type);
})[0];
}
function getStreamProcessors() {
let arr = [];
let type,
streamProcessor;
for (let i = 0; i < streamProcessors.length; i++) {
streamProcessor = streamProcessors[i];
type = streamProcessor.getType();
if (type === Constants.AUDIO || type === Constants.VIDEO || type === Constants.TEXT || type === Constants.ENHANCEMENT) {
arr.push(streamProcessor);
}
}
return arr;
}
function startScheduleControllers() {
const ln = streamProcessors.length;
for (let i = 0; i < ln && streamProcessors[i]; i++) {
streamProcessors[i].getScheduleController().startScheduleTimer();
}
}
function updateData(updatedStreamInfo) {
return new Promise((resolve) => {
streamInfo = updatedStreamInfo;
if (eventController) {
_addInlineEvents();
}
let promises = [];
for (let i = 0, ln = streamProcessors.length; i < ln; i++) {
let streamProcessor = streamProcessors[i];
const currentMediaInfo = streamProcessor.getMediaInfo();
promises.push(streamProcessor.updateStreamInfo(streamInfo));
let allMediaForType = adapter.getAllMediaInfoForType(streamInfo, streamProcessor.getType());
// Filter out embedded text track before updating media info in StreamProcessor
allMediaForType = allMediaForType.filter(mediaInfo => {
return !mediaInfo.isEmbedded;
});
// Check if AdaptationSet has not been removed in MPD update
streamProcessor.setMediaInfoArray(allMediaForType);
if (allMediaForType) {
for (let j = 0; j < allMediaForType.length; j++) {
if (adapter.areMediaInfosEqual(currentMediaInfo, allMediaForType[j])) {
promises.push(streamProcessor.selectMediaInfo(new MediaInfoSelectionInput({ newMediaInfo: allMediaForType[j] })))
}
}
}
}
let processor;
Promise.all(promises)
.then(() => {
let promises = [];
// Only relevant for MSS
while (trackChangedEvents.length > 0) {
let trackChangedEvent = trackChangedEvents.pop();
let newMediaInfo = trackChangedEvent.newMediaInfo;
processor = getProcessorForMediaInfo(trackChangedEvent.oldMediaInfo);
if (!processor) {
return;
}
const oldRepresentation = processor.getRepresentation();
processor.setTrackSwitchInProgress(true);
promises.push(processor.prepareTrackSwitch(oldRepresentation));
promises.push(processor.selectMediaInfo(new MediaInfoSelectionInput({ newMediaInfo })));
}
return Promise.all(promises)
})
.then(() => {
_initializationCompleted();
if (processor) {
processor.setTrackSwitchInProgress(false);
}
eventBus.trigger(Events.STREAM_UPDATED, { streamInfo: streamInfo });
resolve();
})
.catch((e) => {
errHandler.error(e);
})
})
}
function _initializationCompleted() {
const ln = streamProcessors.length;
if (protectionController) {
// Need to check if streamProcessors exists because streamProcessors
// could be cleared in case an error is detected while initializing DRM keysystem
protectionController.clearMediaInfoArray();
for (let i = 0; i < ln && streamProcessors[i]; i++) {
const type = streamProcessors[i].getType();
const mediaInfo = streamProcessors[i].getMediaInfo();
if (type === Constants.AUDIO ||
type === Constants.VIDEO ||
(type === Constants.TEXT && mediaInfo && mediaInfo.isFragmented)) {
let mediaInfo = streamProcessors[i].getMediaInfo();
if (mediaInfo) {
protectionController.initializeForMedia(mediaInfo);
}
}
}
protectionController.handleKeySystemFromManifest();
}
if (!isInitialized) {
isInitialized = true;
videoModel.waitForReadyState(Constants.VIDEO_ELEMENT_READY_STATES.HAVE_METADATA, () => {
eventBus.trigger(Events.STREAM_INITIALIZED, {
streamInfo: streamInfo
});
})
}
}
function _setPreloaded(value) {
preloaded = value;
}
function getPreloaded() {
return preloaded;
}
function getHasFinishedBuffering() {
return hasFinishedBuffering;
}
function getAdapter() {
return adapter;
}
function getCurrentRepresentationForType(type) {
const sp = _getProcessorByType(type);
if (!sp) {
return null;
}
return sp.getRepresentation();
}
function getCurrentMediaInfoForType(type) {
const sp = _getProcessorByType(type);
if (!sp) {
return null;
}
return sp.getMediaInfo();
}
function checkAndHandleCompletedBuffering() {
Iif (hasFinishedBuffering) {
return;
}
streamProcessors.forEach((streamProcessor) => {
streamProcessor.checkAndHandleCompletedBuffering();
})
}
instance = {
activate,
checkAndHandleCompletedBuffering,
deactivate,
getAdapter,
getCurrentMediaInfoForType,
getCurrentRepresentationForType,
getDuration,
getHasAudioTrack,
getHasFinishedBuffering,
getHasVideoTrack,
getId,
getIsActive,
getIsEndedEventSignaled,
getPreloaded,
getRepresentationForTypeById,
getRepresentationForTypeByIndex,
getRepresentationsByType,
getStartTime,
getStreamId,
getStreamInfo,
getStreamProcessors,
getThumbnailController,
initialize,
initializeForTextWithMediaSource,
prepareQualityChange,
prepareTrackChange,
reset,
setIsEndedEventSignaled,
setMediaSource,
startPreloading,
startScheduleControllers,
triggerProtectionError,
updateData,
};
setup();
return instance;
}
Stream.__dashjs_factory_name = 'Stream';
export default FactoryMaker.getClassFactory(Stream);
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