dashjs/build/es5/src/streaming/models/MediaPlayerModel.js

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

'use strict';Object.defineProperty(exports,"__esModule",{value:true});var _UTCTiming=require('../../dash/vo/UTCTiming');var _UTCTiming2=_interopRequireDefault(_UTCTiming);var _FactoryMaker=require('../../core/FactoryMaker');var _FactoryMaker2=_interopRequireDefault(_FactoryMaker);var _Constants=require('../constants/Constants');var _Constants2=_interopRequireDefault(_Constants);var _ABRRulesCollection=require('../rules/abr/ABRRulesCollection');var _ABRRulesCollection2=_interopRequireDefault(_ABRRulesCollection);var _Settings=require('../../core/Settings');var _Settings2=_interopRequireDefault(_Settings);var _SupervisorTools=require('../utils/SupervisorTools');function _interopRequireDefault(obj){return obj&&obj.__esModule?obj:{default:obj};}/**
 * 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.
 */var DEFAULT_MIN_BUFFER_TIME=12;var DEFAULT_MIN_BUFFER_TIME_FAST_SWITCH=20;var DEFAULT_LOW_LATENCY_LIVE_DELAY=3.0;var LOW_LATENCY_REDUCTION_FACTOR=10;var LOW_LATENCY_MULTIPLY_FACTOR=5;var DEFAULT_XHR_WITH_CREDENTIALS=false;function MediaPlayerModel(){var instance=void 0,UTCTimingSources=void 0,xhrWithCredentials=void 0,customABRRule=void 0;var DEFAULT_UTC_TIMING_SOURCE={scheme:'urn:mpeg:dash:utc:http-xsdate:2014',value:'http://time.akamai.com/?iso&ms'};var context=this.context;var settings=(0,_Settings2.default)(context).getInstance();function setup(){UTCTimingSources=[];xhrWithCredentials={default:DEFAULT_XHR_WITH_CREDENTIALS};customABRRule=[];}//TODO Should we use Object.define to have setters/getters? makes more readable code on other side.
function findABRCustomRuleIndex(rulename){var i=void 0;for(i=0;i<customABRRule.length;i++){if(customABRRule[i].rulename===rulename){return i;}}return-1;}function getABRCustomRules(){return customABRRule;}function addABRCustomRule(type,rulename,rule){if(typeof type!=='string'||type!==_ABRRulesCollection2.default.ABANDON_FRAGMENT_RULES&&type!==_ABRRulesCollection2.default.QUALITY_SWITCH_RULES||typeof rulename!=='string'){throw _Constants2.default.BAD_ARGUMENT_ERROR;}var index=findABRCustomRuleIndex(rulename);if(index===-1){// add rule
customABRRule.push({type:type,rulename:rulename,rule:rule});}else{// update rule
customABRRule[index].type=type;customABRRule[index].rule=rule;}}function removeABRCustomRule(rulename){if(rulename){var index=findABRCustomRuleIndex(rulename);//if no rulename custom rule has been found, do nothing
if(index!==-1){// remove rule
customABRRule.splice(index,1);}}else{//if no rulename is defined, remove all ABR custome rules
customABRRule=[];}}function getStableBufferTime(){if(settings.get().streaming.lowLatencyEnabled){return settings.get().streaming.liveDelay*0.6;}var stableBufferTime=settings.get().streaming.stableBufferTime;return stableBufferTime>-1?stableBufferTime:settings.get().streaming.fastSwitchEnabled?DEFAULT_MIN_BUFFER_TIME_FAST_SWITCH:DEFAULT_MIN_BUFFER_TIME;}function getRetryAttemptsForType(type){return settings.get().streaming.lowLatencyEnabled?settings.get().streaming.retryAttempts[type]*LOW_LATENCY_MULTIPLY_FACTOR:settings.get().streaming.retryAttempts[type];}function getRetryIntervalsForType(type){return settings.get().streaming.lowLatencyEnabled?settings.get().streaming.retryIntervals[type]/LOW_LATENCY_REDUCTION_FACTOR:settings.get().streaming.retryIntervals[type];}function getLiveDelay(){if(settings.get().streaming.lowLatencyEnabled){return settings.get().streaming.liveDelay||DEFAULT_LOW_LATENCY_LIVE_DELAY;}return settings.get().streaming.liveDelay;}function addUTCTimingSource(schemeIdUri,value){removeUTCTimingSource(schemeIdUri,value);//check if it already exists and remove if so.
var vo=new _UTCTiming2.default();vo.schemeIdUri=schemeIdUri;vo.value=value;UTCTimingSources.push(vo);}function getUTCTimingSources(){return UTCTimingSources;}function removeUTCTimingSource(schemeIdUri,value){(0,_SupervisorTools.checkParameterType)(schemeIdUri,'string');(0,_SupervisorTools.checkParameterType)(value,'string');UTCTimingSources.forEach(function(obj,idx){if(obj.schemeIdUri===schemeIdUri&&obj.value===value){UTCTimingSources.splice(idx,1);}});}function clearDefaultUTCTimingSources(){UTCTimingSources=[];}function restoreDefaultUTCTimingSources(){addUTCTimingSource(DEFAULT_UTC_TIMING_SOURCE.scheme,DEFAULT_UTC_TIMING_SOURCE.value);}function setXHRWithCredentialsForType(type,value){if(!type){Object.keys(xhrWithCredentials).forEach(function(key){setXHRWithCredentialsForType(key,value);});}else{xhrWithCredentials[type]=!!value;}}function getXHRWithCredentialsForType(type){var useCreds=xhrWithCredentials[type];return useCreds===undefined?xhrWithCredentials.default:useCreds;}function getDefaultUtcTimingSource(){return DEFAULT_UTC_TIMING_SOURCE;}function reset(){//TODO need to figure out what props to persist across sessions and which to reset if any.
//setup();
}instance={getABRCustomRules:getABRCustomRules,addABRCustomRule:addABRCustomRule,removeABRCustomRule:removeABRCustomRule,getStableBufferTime:getStableBufferTime,getRetryAttemptsForType:getRetryAttemptsForType,getRetryIntervalsForType:getRetryIntervalsForType,getLiveDelay:getLiveDelay,addUTCTimingSource:addUTCTimingSource,removeUTCTimingSource:removeUTCTimingSource,getUTCTimingSources:getUTCTimingSources,clearDefaultUTCTimingSources:clearDefaultUTCTimingSources,restoreDefaultUTCTimingSources:restoreDefaultUTCTimingSources,setXHRWithCredentialsForType:setXHRWithCredentialsForType,getXHRWithCredentialsForType:getXHRWithCredentialsForType,getDefaultUtcTimingSource:getDefaultUtcTimingSource,reset:reset};setup();return instance;}//TODO see if you can move this and not export and just getter to get default value.
MediaPlayerModel.__dashjs_factory_name='MediaPlayerModel';exports.default=_FactoryMaker2.default.getSingletonFactory(MediaPlayerModel);
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