@l5i/dashjs/build/es5/src/streaming/controllers/FragmentController.js

A reference client implementation for the playback of MPEG DASH via Javascript and compliant browsers.

/**
 * 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.
 */'use strict';Object.defineProperty(exports,'__esModule',{value:true});function _interopRequireDefault(obj){return obj && obj.__esModule?obj:{'default':obj};}var _constantsConstants=require('../constants/Constants');var _constantsConstants2=_interopRequireDefault(_constantsConstants);var _voMetricsHTTPRequest=require('../vo/metrics/HTTPRequest');var _voDataChunk=require('../vo/DataChunk');var _voDataChunk2=_interopRequireDefault(_voDataChunk);var _modelsFragmentModel=require('../models/FragmentModel');var _modelsFragmentModel2=_interopRequireDefault(_modelsFragmentModel);var _FragmentLoader=require('../FragmentLoader');var _FragmentLoader2=_interopRequireDefault(_FragmentLoader);var _utilsRequestModifier=require('../utils/RequestModifier');var _utilsRequestModifier2=_interopRequireDefault(_utilsRequestModifier);var _coreEventBus=require('../../core/EventBus');var _coreEventBus2=_interopRequireDefault(_coreEventBus);var _coreEventsEvents=require('../../core/events/Events');var _coreEventsEvents2=_interopRequireDefault(_coreEventsEvents);var _coreFactoryMaker=require('../../core/FactoryMaker');var _coreFactoryMaker2=_interopRequireDefault(_coreFactoryMaker);var _coreDebug=require('../../core/Debug');var _coreDebug2=_interopRequireDefault(_coreDebug);function FragmentController(config){config = config || {};var context=this.context;var eventBus=(0,_coreEventBus2['default'])(context).getInstance();var errHandler=config.errHandler;var mediaPlayerModel=config.mediaPlayerModel;var metricsModel=config.metricsModel;var instance=undefined,logger=undefined,fragmentModels=undefined;function setup(){logger = (0,_coreDebug2['default'])(context).getInstance().getLogger(instance);resetInitialSettings();eventBus.on(_coreEventsEvents2['default'].FRAGMENT_LOADING_COMPLETED,onFragmentLoadingCompleted,instance);eventBus.on(_coreEventsEvents2['default'].FRAGMENT_LOADING_PROGRESS,onFragmentLoadingCompleted,instance);}function getModel(type){var model=fragmentModels[type];if(!model){model = (0,_modelsFragmentModel2['default'])(context).create({metricsModel:metricsModel,fragmentLoader:(0,_FragmentLoader2['default'])(context).create({metricsModel:metricsModel,mediaPlayerModel:mediaPlayerModel,errHandler:errHandler,requestModifier:(0,_utilsRequestModifier2['default'])(context).getInstance()})});fragmentModels[type] = model;}return model;}function isInitializationRequest(request){return request && request.type && request.type === _voMetricsHTTPRequest.HTTPRequest.INIT_SEGMENT_TYPE;}function resetInitialSettings(){for(var model in fragmentModels) {fragmentModels[model].reset();}fragmentModels = {};}function reset(){eventBus.off(_coreEventsEvents2['default'].FRAGMENT_LOADING_COMPLETED,onFragmentLoadingCompleted,this);eventBus.off(_coreEventsEvents2['default'].FRAGMENT_LOADING_PROGRESS,onFragmentLoadingCompleted,this);resetInitialSettings();}function createDataChunk(bytes,request,streamId,endFragment){var chunk=new _voDataChunk2['default']();chunk.streamId = streamId;chunk.mediaInfo = request.mediaInfo;chunk.segmentType = request.type;chunk.start = request.startTime;chunk.duration = request.duration;chunk.end = chunk.start + chunk.duration;chunk.bytes = bytes;chunk.index = request.index;chunk.quality = request.quality;chunk.representationId = request.representationId;chunk.endFragment = endFragment;return chunk;}function onFragmentLoadingCompleted(e){if(fragmentModels[e.request.mediaType] !== e.sender){return;}var request=e.request;var bytes=e.response;var isInit=isInitializationRequest(request);var streamInfo=request.mediaInfo.streamInfo;if(e.error){if(e.request.mediaType === _constantsConstants2['default'].AUDIO || e.request.mediaType === _constantsConstants2['default'].VIDEO || e.request.mediaType === _constantsConstants2['default'].FRAGMENTED_TEXT){ // add service location to blacklist controller - only for audio or video. text should not set errors
eventBus.trigger(_coreEventsEvents2['default'].SERVICE_LOCATION_BLACKLIST_ADD,{entry:e.request.serviceLocation});}}if(!bytes || !streamInfo){logger.warn('No ' + request.mediaType + ' bytes to push or stream is inactive.');return;}var chunk=createDataChunk(bytes,request,streamInfo.id,e.type !== _coreEventsEvents2['default'].FRAGMENT_LOADING_PROGRESS);eventBus.trigger(isInit?_coreEventsEvents2['default'].INIT_FRAGMENT_LOADED:_coreEventsEvents2['default'].MEDIA_FRAGMENT_LOADED,{chunk:chunk,fragmentModel:e.sender});}instance = {getModel:getModel,isInitializationRequest:isInitializationRequest,reset:reset};setup();return instance;}FragmentController.__dashjs_factory_name = 'FragmentController';exports['default'] = _coreFactoryMaker2['default'].getClassFactory(FragmentController);module.exports = exports['default'];
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