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

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<!DOCTYPE html><html lang="en" style="font-size:16px"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="https://dashif.org/img/favicon.ico"><link type="text/css" rel="stylesheet" href="jsdoc-custom.css"><title>Source: streaming/models/CustomParametersModel.js</title><!--[if lt IE 9]> <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--><script src="scripts/third-party/hljs.js" defer="defer"></script><script src="scripts/third-party/hljs-line-num.js" defer="defer"></script><script src="scripts/third-party/popper.js" defer="defer"></script><script src="scripts/third-party/tippy.js" defer="defer"></script><script src="scripts/third-party/tocbot.min.js"></script><script>var baseURL="/",locationPathname="";baseURL=(locationPathname=document.location.pathname).substr(0,locationPathname.lastIndexOf("/")+1)</script><link rel="stylesheet" href="styles/clean-jsdoc-theme.min.css"><svg 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href="MediaPlayerEvents.html#event:FRAGMENT_LOADING_PROGRESS">FRAGMENT_LOADING_PROGRESS</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:FRAGMENT_LOADING_STARTED">FRAGMENT_LOADING_STARTED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:INBAND_PRFT">INBAND_PRFT</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:LOG">LOG</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:MANIFEST_LOADED">MANIFEST_LOADED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:MANIFEST_LOADING_FINISHED">MANIFEST_LOADING_FINISHED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:MANIFEST_LOADING_STARTED">MANIFEST_LOADING_STARTED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:MANIFEST_VALIDITY_CHANGED">MANIFEST_VALIDITY_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:METRIC_ADDED">METRIC_ADDED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:METRIC_CHANGED">METRIC_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:METRIC_UPDATED">METRIC_UPDATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:METRICS_CHANGED">METRICS_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PERIOD_SWITCH_COMPLETED">PERIOD_SWITCH_COMPLETED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PERIOD_SWITCH_STARTED">PERIOD_SWITCH_STARTED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_ENDED">PLAYBACK_ENDED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_ERROR">PLAYBACK_ERROR</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_LOADED_DATA">PLAYBACK_LOADED_DATA</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_METADATA_LOADED">PLAYBACK_METADATA_LOADED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_NOT_ALLOWED">PLAYBACK_NOT_ALLOWED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_PAUSED">PLAYBACK_PAUSED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_PLAYING">PLAYBACK_PLAYING</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_PROGRESS">PLAYBACK_PROGRESS</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_RATE_CHANGED">PLAYBACK_RATE_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_SEEKED">PLAYBACK_SEEKED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_SEEKING">PLAYBACK_SEEKING</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_STALLED">PLAYBACK_STALLED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_STARTED">PLAYBACK_STARTED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_TIME_UPDATED">PLAYBACK_TIME_UPDATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_VOLUME_CHANGED">PLAYBACK_VOLUME_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:PLAYBACK_WAITING">PLAYBACK_WAITING</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:QUALITY_CHANGE_RENDERED">QUALITY_CHANGE_RENDERED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:QUALITY_CHANGE_REQUESTED">QUALITY_CHANGE_REQUESTED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:REPRESENTATION_SWITCH">REPRESENTATION_SWITCH</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_ACTIVATED">STREAM_ACTIVATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_DEACTIVATED">STREAM_DEACTIVATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_INITIALIZED">STREAM_INITIALIZED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_INITIALIZING">STREAM_INITIALIZING</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_TEARDOWN_COMPLETE">STREAM_TEARDOWN_COMPLETE</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:STREAM_UPDATED">STREAM_UPDATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:TEXT_TRACK_ADDED">TEXT_TRACK_ADDED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:TEXT_TRACKS_ADDED">TEXT_TRACKS_ADDED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:THROUGHPUT_MEASUREMENT_STORED">THROUGHPUT_MEASUREMENT_STORED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:TRACK_CHANGE_RENDERED">TRACK_CHANGE_RENDERED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:TTML_PARSED">TTML_PARSED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:TTML_TO_PARSE">TTML_TO_PARSE</a></div><div class="sidebar-section-children"><a href="MetricsReportingEvents.html#event:CMCD_DATA_GENERATED">CMCD_DATA_GENERATED</a></div><div class="sidebar-section-children"><a href="OfflineEvents.html#event:OFFLINE_RECORD_FINISHED">OFFLINE_RECORD_FINISHED</a></div><div class="sidebar-section-children"><a href="OfflineEvents.html#event:OFFLINE_RECORD_LOADEDMETADATA">OFFLINE_RECORD_LOADEDMETADATA</a></div><div class="sidebar-section-children"><a href="OfflineEvents.html#event:OFFLINE_RECORD_STARTED">OFFLINE_RECORD_STARTED</a></div><div class="sidebar-section-children"><a href="OfflineEvents.html#event:OFFLINE_RECORD_STOPPED">OFFLINE_RECORD_STOPPED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_ADDED">KEY_ADDED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_ERROR">KEY_ERROR</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_MESSAGE">KEY_MESSAGE</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_SESSION_CLOSED">KEY_SESSION_CLOSED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_SESSION_CREATED">KEY_SESSION_CREATED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_SESSION_REMOVED">KEY_SESSION_REMOVED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_STATUSES_CHANGED">KEY_STATUSES_CHANGED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_SYSTEM_ACCESS_COMPLETE">KEY_SYSTEM_ACCESS_COMPLETE</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:KEY_SYSTEM_SELECTED">KEY_SYSTEM_SELECTED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:LICENSE_REQUEST_COMPLETE">LICENSE_REQUEST_COMPLETE</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:LICENSE_REQUEST_SENDING">LICENSE_REQUEST_SENDING</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:PROTECTION_CREATED">PROTECTION_CREATED</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html#event:PROTECTION_DESTROYED">PROTECTION_DESTROYED</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-global"><div>Global</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="global.html#LICENSE_SERVER_MANIFEST_CONFIGURATIONS">LICENSE_SERVER_MANIFEST_CONFIGURATIONS</a></div><div class="sidebar-section-children"><a href="global.html#MediaType">MediaType</a></div></div></div></div></div><div class="navbar-container" id="VuAckcnZhf"><nav class="navbar"><div class="navbar-left-items"></div><div class="navbar-right-items"><div class="navbar-right-item"><button class="icon-button search-button" aria-label="open-search"><svg><use xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" 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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 UTCTiming from '../../dash/vo/UTCTiming'; import FactoryMaker from '../../core/FactoryMaker'; import Settings from '../../core/Settings'; import {checkParameterType} from '../utils/SupervisorTools'; import ABRRulesCollection from '../rules/abr/ABRRulesCollection'; import Constants from '../constants/Constants'; const DEFAULT_XHR_WITH_CREDENTIALS = false; function CustomParametersModel() { let instance, utcTimingSources, xhrWithCredentials, licenseRequestFilters, licenseResponseFilters, customCapabilitiesFilters, customInitialTrackSelectionFunction, customAbrRules; const context = this.context; const settings = Settings(context).getInstance(); function setup() { xhrWithCredentials = { default: DEFAULT_XHR_WITH_CREDENTIALS }; _resetInitialSettings(); } function _resetInitialSettings() { licenseRequestFilters = []; licenseResponseFilters = []; customCapabilitiesFilters = []; customAbrRules = []; customInitialTrackSelectionFunction = null; utcTimingSources = []; } function reset() { _resetInitialSettings(); } function setConfig() { } /** * Registers a custom initial track selection function. Only one function is allowed. Calling this method will overwrite a potentially existing function. * @param {function} customFunc - the custom function that returns the initial track */ function setCustomInitialTrackSelectionFunction(customFunc) { customInitialTrackSelectionFunction = customFunc; } /** * Resets the custom initial track selection */ function resetCustomInitialTrackSelectionFunction() { customInitialTrackSelectionFunction = null; } /** * Returns the initial track selection function * @return {function} */ function getCustomInitialTrackSelectionFunction() { return customInitialTrackSelectionFunction; } /** * Returns all license request filters * @return {array} */ function getLicenseRequestFilters() { return licenseRequestFilters; } /** * Returns all license response filters * @return {array} */ function getLicenseResponseFilters() { return licenseResponseFilters; } /** * Registers a license request filter. This enables application to manipulate/overwrite any request parameter and/or request data. * The provided callback function shall return a promise that shall be resolved once the filter process is completed. * The filters are applied in the order they are registered. * @param {function} filter - the license request filter callback */ function registerLicenseRequestFilter(filter) { licenseRequestFilters.push(filter); } /** * Registers a license response filter. This enables application to manipulate/overwrite the response data * The provided callback function shall return a promise that shall be resolved once the filter process is completed. * The filters are applied in the order they are registered. * @param {function} filter - the license response filter callback */ function registerLicenseResponseFilter(filter) { licenseResponseFilters.push(filter); } /** * Unregisters a license request filter. * @param {function} filter - the license request filter callback */ function unregisterLicenseRequestFilter(filter) { _unregisterFilter(licenseRequestFilters, filter); } /** * Unregisters a license response filter. * @param {function} filter - the license response filter callback */ function unregisterLicenseResponseFilter(filter) { _unregisterFilter(licenseResponseFilters, filter); } /** * Returns all custom capabilities filter * @return {array} */ function getCustomCapabilitiesFilters() { return customCapabilitiesFilters; } /** * Registers a custom capabilities filter. This enables application to filter representations to use. * The provided callback function shall return a boolean based on whether or not to use the representation. * The filters are applied in the order they are registered. * @param {function} filter - the custom capabilities filter callback */ function registerCustomCapabilitiesFilter(filter) { customCapabilitiesFilters.push(filter); } /** * Unregisters a custom capabilities filter. * @param {function} filter - the custom capabilities filter callback */ function unregisterCustomCapabilitiesFilter(filter) { _unregisterFilter(customCapabilitiesFilters, filter); } /** * Unregister a filter from the list of existing filers. * @param {array} filters * @param {function} filter * @private */ function _unregisterFilter(filters, filter) { let index = -1; filters.some((item, i) => { if (item === filter) { index = i; return true; } }); if (index &lt; 0) return; filters.splice(index, 1); } /** * Iterate through the list of custom ABR rules and find the right rule by name * @param {string} rulename * @return {number} rule number */ function _findAbrCustomRuleIndex(rulename) { let i; for (i = 0; i &lt; customAbrRules.length; i++) { if (customAbrRules[i].rulename === rulename) { return i; } } return -1; } /** * Add a custom ABR Rule * Rule will be apply on next stream if a stream is being played * * @param {string} type - rule type (one of ['qualitySwitchRules','abandonFragmentRules']) * @param {string} rulename - name of rule (used to identify custom rule). If one rule of same name has been added, then existing rule will be updated * @param {object} rule - the rule object instance * @throws {@link Constants#BAD_ARGUMENT_ERROR BAD_ARGUMENT_ERROR} if called with invalid arguments. */ function addAbrCustomRule(type, rulename, rule) { if (typeof type !== 'string' || (type !== ABRRulesCollection.ABANDON_FRAGMENT_RULES &amp;&amp; type !== ABRRulesCollection.QUALITY_SWITCH_RULES) || typeof rulename !== 'string') { throw Constants.BAD_ARGUMENT_ERROR; } let index = _findAbrCustomRuleIndex(rulename); if (index === -1) { // add rule customAbrRules.push({ type: type, rulename: rulename, rule: rule }); } else { // update rule customAbrRules[index].type = type; customAbrRules[index].rule = rule; } } /** * Remove a custom ABR Rule * * @param {string} rulename - name of the rule to be removed */ function removeAbrCustomRule(rulename) { if (rulename) { let index = _findAbrCustomRuleIndex(rulename); //if no rulename custom rule has been found, do nothing if (index !== -1) { // remove rule customAbrRules.splice(index, 1); } } else { //if no rulename is defined, remove all ABR custome rules customAbrRules = []; } } /** * Remove all custom rules */ function removeAllAbrCustomRule() { customAbrRules = []; } /** * Return all ABR custom rules * @return {array} */ function getAbrCustomRules() { return customAbrRules; } /** * Add a UTC timing source at the top of the list * @param {string} schemeIdUri * @param {string} value */ function addUTCTimingSource(schemeIdUri, value) { removeUTCTimingSource(schemeIdUri, value); //check if it already exists and remove if so. let vo = new UTCTiming(); vo.schemeIdUri = schemeIdUri; vo.value = value; utcTimingSources.push(vo); } /** * Return all UTC timing sources * @return {array} */ function getUTCTimingSources() { return utcTimingSources; } /** * Remove a specific timing source from the array * @param {string} schemeIdUri * @param {string} value */ function removeUTCTimingSource(schemeIdUri, value) { checkParameterType(schemeIdUri, 'string'); checkParameterType(value, 'string'); utcTimingSources.forEach(function (obj, idx) { if (obj.schemeIdUri === schemeIdUri &amp;&amp; obj.value === value) { utcTimingSources.splice(idx, 1); } }); } /** * Remove all timing sources */ function clearDefaultUTCTimingSources() { utcTimingSources = []; } /** * Add the default timing source to the list */ function restoreDefaultUTCTimingSources() { let defaultUtcTimingSource = settings.get().streaming.utcSynchronization.defaultTimingSource; addUTCTimingSource(defaultUtcTimingSource.scheme, defaultUtcTimingSource.value); } function setXHRWithCredentialsForType(type, value) { if (!type) { Object.keys(xhrWithCredentials).forEach(key => { setXHRWithCredentialsForType(key, value); }); } else { xhrWithCredentials[type] = !!value; } } function getXHRWithCredentialsForType(type) { const useCreds = xhrWithCredentials[type]; return useCreds === undefined ? xhrWithCredentials.default : useCreds; } instance = { getCustomInitialTrackSelectionFunction, setCustomInitialTrackSelectionFunction, resetCustomInitialTrackSelectionFunction, getLicenseResponseFilters, getLicenseRequestFilters, getCustomCapabilitiesFilters, registerCustomCapabilitiesFilter, registerLicenseResponseFilter, registerLicenseRequestFilter, unregisterCustomCapabilitiesFilter, unregisterLicenseResponseFilter, unregisterLicenseRequestFilter, addAbrCustomRule, removeAllAbrCustomRule, removeAbrCustomRule, getAbrCustomRules, addUTCTimingSource, removeUTCTimingSource, getUTCTimingSources, clearDefaultUTCTimingSources, restoreDefaultUTCTimingSources, setXHRWithCredentialsForType, getXHRWithCredentialsForType, setConfig, reset }; setup(); return instance; } CustomParametersModel.__dashjs_factory_name = 'CustomParametersModel'; export default FactoryMaker.getSingletonFactory(CustomParametersModel); </code></pre></article></section></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" 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