dashjs
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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: offline/storage/IndexDBStore.js</title><!--[if lt IE 9]>
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<![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 aria-hidden="true" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" style="display:none"><defs><symbol id="copy-icon" viewbox="0 0 488.3 488.3"><g><path d="M314.25,85.4h-227c-21.3,0-38.6,17.3-38.6,38.6v325.7c0,21.3,17.3,38.6,38.6,38.6h227c21.3,0,38.6-17.3,38.6-38.6V124 C352.75,102.7,335.45,85.4,314.25,85.4z M325.75,449.6c0,6.4-5.2,11.6-11.6,11.6h-227c-6.4,0-11.6-5.2-11.6-11.6V124 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c4.065,4.065,9.387,6.098,14.715,6.098c5.321,0,10.649-2.033,14.715-6.098C514.033,497.778,514.033,484.596,505.902,476.472z"/></g></g></symbol><symbol id="font-size-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M11.246 15H4.754l-2 5H.6L7 4h2l6.4 16h-2.154l-2-5zm-.8-2L8 6.885 5.554 13h4.892zM21 12.535V12h2v8h-2v-.535a4 4 0 1 1 0-6.93zM19 18a2 2 0 1 0 0-4 2 2 0 0 0 0 4z"/></symbol><symbol id="add-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M11 11V5h2v6h6v2h-6v6h-2v-6H5v-2z"/></symbol><symbol id="minus-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M5 11h14v2H5z"/></symbol><symbol id="dark-theme-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M10 7a7 7 0 0 0 12 4.9v.1c0 5.523-4.477 10-10 10S2 17.523 2 12 6.477 2 12 2h.1A6.979 6.979 0 0 0 10 7zm-6 5a8 8 0 0 0 15.062 3.762A9 9 0 0 1 8.238 4.938 7.999 7.999 0 0 0 4 12z"/></symbol><symbol id="light-theme-icon" viewBox="0 0 24 24"><path 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5.92678 4.28033 6.21967L8 9.93934L11.7197 6.21967C12.0126 5.92678 12.4874 5.92678 12.7803 6.21967Z"></path></symbol><symbol id="codepen-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M16.5 13.202L13 15.535v3.596L19.197 15 16.5 13.202zM14.697 12L12 10.202 9.303 12 12 13.798 14.697 12zM20 10.869L18.303 12 20 13.131V10.87zM19.197 9L13 4.869v3.596l3.5 2.333L19.197 9zM7.5 10.798L11 8.465V4.869L4.803 9 7.5 10.798zM4.803 15L11 19.131v-3.596l-3.5-2.333L4.803 15zM4 13.131L5.697 12 4 10.869v2.262zM2 9a1 1 0 0 1 .445-.832l9-6a1 1 0 0 1 1.11 0l9 6A1 1 0 0 1 22 9v6a1 1 0 0 1-.445.832l-9 6a1 1 0 0 1-1.11 0l-9-6A1 1 0 0 1 2 15V9z"/></symbol><symbol id="close-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M12 10.586l4.95-4.95 1.414 1.414-4.95 4.95 4.95 4.95-1.414 1.414-4.95-4.95-4.95 4.95-1.414-1.414 4.95-4.95-4.95-4.95L7.05 5.636z"/></symbol><symbol id="menu-icon" viewBox="0 0 24 24"><path fill="none" d="M0 0h24v24H0z"/><path d="M3 4h18v2H3V4zm0 7h18v2H3v-2zm0 7h18v2H3v-2z"/></symbol></defs></svg></head><body data-theme="light"><div class="sidebar-container"><div class="sidebar" id="sidebar"><a href="/" class="sidebar-title sidebar-title-anchor">Home</a><div class="sidebar-items-container"><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-modules"><div>Modules</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="module-DashAdapter.html">DashAdapter</a></div><div class="sidebar-section-children"><a href="module-DashMetrics.html">DashMetrics</a></div><div class="sidebar-section-children"><a href="module-MediaPlayer.html">MediaPlayer</a></div><div class="sidebar-section-children"><a href="module-OfflineController.html">OfflineController</a></div><div class="sidebar-section-children"><a href="module-ProtectionController.html">ProtectionController</a></div><div class="sidebar-section-children"><a href="module-Settings.html">Settings</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-classes"><div>Classes</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="Errors.html">Errors</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html">MediaPlayerEvents</a></div><div class="sidebar-section-children"><a href="MediaPlayerModel.html">MediaPlayerModel</a></div><div class="sidebar-section-children"><a href="MetricsReportingEvents.html">MetricsReportingEvents</a></div><div class="sidebar-section-children"><a href="MssErrors.html">MssErrors</a></div><div class="sidebar-section-children"><a href="OfflineErrors.html">OfflineErrors</a></div><div class="sidebar-section-children"><a href="OfflineEvents.html">OfflineEvents</a></div><div class="sidebar-section-children"><a href="ProtectionErrors.html">ProtectionErrors</a></div><div class="sidebar-section-children"><a href="ProtectionEvents.html">ProtectionEvents</a></div></div><div class="sidebar-section-title with-arrow" data-isopen="false" id="sidebar-events"><div>Events</div><svg><use xlink:href="#down-icon"></use></svg></div><div class="sidebar-section-children-container"><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:ADAPTATION_SET_REMOVED_NO_CAPABILITIES">ADAPTATION_SET_REMOVED_NO_CAPABILITIES</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:AST_IN_FUTURE">AST_IN_FUTURE</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:BASE_URLS_UPDATED">BASE_URLS_UPDATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:BUFFER_EMPTY">BUFFER_EMPTY</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:BUFFER_LEVEL_STATE_CHANGED">BUFFER_LEVEL_STATE_CHANGED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:BUFFER_LEVEL_UPDATED">BUFFER_LEVEL_UPDATED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:BUFFER_LOADED">BUFFER_LOADED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CAN_PLAY">CAN_PLAY</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CAN_PLAY_THROUGH">CAN_PLAY_THROUGH</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CAPTION_CONTAINER_RESIZE">CAPTION_CONTAINER_RESIZE</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CAPTION_RENDERED">CAPTION_RENDERED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CONFORMANCE_VIOLATION">CONFORMANCE_VIOLATION</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CONTENT_STEERING_REQUEST_COMPLETED">CONTENT_STEERING_REQUEST_COMPLETED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CUE_ENTER">CUE_ENTER</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:CUE_ENTER">CUE_ENTER</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:DVB_FONT_DOWNLOAD_ADDED">DVB_FONT_DOWNLOAD_ADDED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:DVB_FONT_DOWNLOAD_COMPLETE">DVB_FONT_DOWNLOAD_COMPLETE</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:DVB_FONT_DOWNLOAD_FAILED">DVB_FONT_DOWNLOAD_FAILED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:DYNAMIC_TO_STATIC">DYNAMIC_TO_STATIC</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:ERROR">ERROR</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:EVENT_MODE_ON_RECEIVE">EVENT_MODE_ON_RECEIVE</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:EVENT_MODE_ON_START">EVENT_MODE_ON_START</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:FRAGMENT_LOADING_ABANDONED">FRAGMENT_LOADING_ABANDONED</a></div><div class="sidebar-section-children"><a href="MediaPlayerEvents.html#event:FRAGMENT_LOADING_COMPLETED">FRAGMENT_LOADING_COMPLETED</a></div><div class="sidebar-section-children"><a 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" xlink:href="#dark-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section id="source-page" class="source-page"><header><h1 id="title" class="has-anchor">offline_storage_IndexDBStore.js</h1></header><article><pre class="prettyprint source lang-js"><code>/**
* 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.
*/
/**
* @ignore
*/
const localforage = require('localforage');
const entities = require('html-entities').XmlEntities;
function IndexDBStore() {
let instance,
manifestStore,
fragmentStores;
function setup() {
fragmentStores = {};
if (typeof window === 'undefined') {
return;
}
localforage.config({
driver: localforage.INDEXEDDB,
name: 'dash_offline_db'
});
manifestStore = localforage.createInstance({
driver: localforage.INDEXEDDB,
name: 'dash_offline_db',
version: 1.0,
storeName: 'manifest'
});
}
/////////////////////////////////////////
//
// GET/SET Methods
//
////////////////////////////////////////
/**
* Creates an instance of localforage to store fragments in indexed db
* @param {string} storeName
* @instance
*/
function createFragmentStore(storeName) {
if (!fragmentStores[storeName]) {
console.log('setStore ' + storeName);
let fragmentStore = localforage.createInstance({
driver: localforage.INDEXEDDB,
name: 'dash_offline_db',
version: 1.0,
storeName: storeName
});
fragmentStores[storeName] = fragmentStore;
}
}
/**
* Update download status
* @param {number} manifestId
* @param {string} newStatus
* @returns {Promise} promise
* @instance
*/
function setDownloadingStatus(manifestId, newStatus) {
return getManifestById(manifestId).then(function (item) {
item.status = newStatus;
return updateManifest(item).catch(function () {
return Promise.reject('Cannot set status ' + newStatus + ' for this stream !');
});
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Updat last downloaded fragment index for representationId
* @param {number} manifestId - manifest id
* @param {string} representationId - representation
* @param {number} state - representation state
* @returns {Promise} promise
* @instance
*/
function setRepresentationCurrentState(manifestId, representationId, state) {
return getManifestById(manifestId).then(function (item) {
if (!item.state) {
item.state = {};
}
if (!item.state[representationId]) {
item.state[representationId] = {
index: -1,
downloaded: 0
};
}
item.state[representationId] = state;
return updateManifest(item).catch(function () {
return Promise.reject('Cannot set current index for represenation id ' + representationId);
});
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Returns current downloaded segment index for representation
* @param {number} manifestId - manifest id
* @param {string} representationId - representation
* @returns {Promise} promise
* @instance
*/
function getRepresentationCurrentState(manifestId, representationId) {
return getManifestById(manifestId).then(function (item) {
let state = {
index: -1,
downloaded: 0
};
if (item.state && item.state[representationId]) {
state = item.state[representationId];
}
return Promise.resolve(state);
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Returns a fragment from its key
* @param {number} manifestId
* @param {number} key
* @returns {Promise} fragment
* @instance
*/
function getFragmentByKey(manifestId, key) {
let fragmentStore = fragmentStores[manifestId];
if (!fragmentStore) {
return Promise.reject(new Error (`No fragment store found for manifest ${manifestId}`));
}
return fragmentStore.getItem(key).then(function (value) {
return Promise.resolve(value);
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Returns a manifest from its identifier
* @param {number} id
* @returns {Promise} {Object[]} manifests
* @instance
*/
function getManifestById(id) {
return getAllManifests().then(function (array) {
if (array) {
let item = null;
for (let i = 0; i < array.manifests.length; i++) {
if (array.manifests[i].manifestId === parseInt(id)) {
item = array.manifests[i];
}
}
if (item !== null) {
item.manifest = entities.decode(item.manifest);
return Promise.resolve(item);
} else {
return Promise.reject('Cannot found manifest with this manifestId : ' + id);
}
} else {
return Promise.reject('Any manifests stored in DB !');
}
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Returns all offline manifests
* @returns {Promise} {Object[]} manifests
* @instance
*/
function getAllManifests() {
return manifestStore.getItem('manifest').then(function (array) {
return Promise.resolve(array ? array : {
'manifests': []
});
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Return higher manifest id
* @returns {Promise} number
* @instance
*/
function getCurrentHigherManifestId() {
return getAllManifests().then(function (array) {
let higherManifestId = 0;
if (array) {
for (let i = 0; i < array.manifests.length; i++) {
if (array.manifests[i].manifestId > higherManifestId) {
higherManifestId = array.manifests[i].manifestId;
}
}
return Promise.resolve(higherManifestId);
} else {
return Promise.resolve(higherManifestId);
}
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Update manifest
* @param {Object} manifest updated manifest
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function updateManifest(manifest) {
return getAllManifests().then(function (array) {
try {
for (let i = 0; i < array.manifests.length; i++) {
if (array.manifests[i].manifestId === manifest.manifestId) {
array.manifests[i] = manifest;
}
}
return manifestStore.setItem('manifest', array);
} catch (err) {
throw new Error('Any results found !');
}
});
}
/**
* save selected representation by user
* @param {Object} manifest updated manifest
* @param {Object} selected selected representations
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function saveSelectedRepresentations(manifest, selected) {
return getManifestById(manifest).then(function (item) {
if (!item.selected) {
item.selected = {};
}
item.selected = selected;
return updateManifest(item).catch(function () {
return Promise.reject('Cannot save selected representations');
});
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Store a manifest in manifest array
* @param {Object} manifest
* @instance
*/
function storeManifest(manifest) {
return manifestStore.getItem('manifest').then(function (results) {
let array = results ? results : {
'manifests': []
};
array.manifests.push(manifest);
return manifestStore.setItem('manifest', array);
});
}
/**
* Store a fragment in fragment store
* @param {number} manifestId
* @param {number} fragmentId
* @param {Object} fragmentData
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function storeFragment(manifestId, fragmentId, fragmentData) {
let fragmentStore = fragmentStores[manifestId];
if (!fragmentStore) {
return Promise.reject(new Error (`No fragment store found for manifest ${manifestId}`));
}
return fragmentStore.setItem(fragmentId, fragmentData, function () {
return Promise.resolve();
}).catch(function (err) {
return Promise.reject(err);
});
}
/////////////////////////////////////////
//
// DROP Methods
//
////////////////////////////////////////
/**
* Remove all manifest and fragment store
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function dropAll() {
return localforage.clear().then(function () {
return Promise.resolve();
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Remove framgent store given its name
* @param {string} storeName
* @instance
*/
function dropFragmentStore(storeName) {
localforage.dropInstance({
driver: localforage.INDEXEDDB,
name: 'dash_offline_db',
version: 1.0,
storeName: storeName
}).then(function () {
delete fragmentStores[storeName];
}).catch(function (err) {
console.log('dropFragmentStore failed ' + err);
});
return;
}
/**
* Remove download given its id (fragmentStore + manifest entry in manifest array)
* @param {number} manifestId
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function deleteDownloadById(manifestId) {
return manifestStore.getItem('manifest').then(function (array) {
if (array) {
return deleteFragmentStore(manifestId).then(function () {
for (let i = 0; i < array.manifests.length; i++) {
if (array.manifests[i].manifestId === parseInt(manifestId)) {
array.manifests.splice(i, 1);
}
}
return manifestStore.setItem('manifest', array).then(function () {
return Promise.resolve('This stream has been successfull removed !');
}).catch(function () {
return Promise.reject('An error occured when trying to delete this manifest');
});
});
} else {
return Promise.resolve('Nothing to delete !');
}
}).catch(function (err) {
return Promise.reject(err);
});
}
/**
* Remove fragment store
* @param {string} storeName
* @returns {Promise} promise asynchronously resolved
* @instance
*/
function deleteFragmentStore(storeName) {
localforage.createInstance({
name: 'dash_offline_db',
storeName: storeName
});
return localforage.dropInstance({
name: 'dash_offline_db',
storeName: storeName
}).then(function () {
delete fragmentStores[storeName];
return Promise.resolve();
}).catch(function (err) {
console.log(err);
return Promise.reject(err);
});
}
setup();
instance = {
dropAll: dropAll,
getFragmentByKey: getFragmentByKey,
getManifestById: getManifestById,
storeFragment: storeFragment,
storeManifest: storeManifest,
updateManifest: updateManifest,
saveSelectedRepresentations: saveSelectedRepresentations,
createFragmentStore: createFragmentStore,
setDownloadingStatus: setDownloadingStatus,
setRepresentationCurrentState: setRepresentationCurrentState,
getRepresentationCurrentState: getRepresentationCurrentState,
getCurrentHigherManifestId: getCurrentHigherManifestId,
getAllManifests: getAllManifests,
dropFragmentStore: dropFragmentStore,
deleteDownloadById: deleteDownloadById
};
return instance;
}
IndexDBStore.__dashjs_factory_name = 'IndexDBStore';
export default dashjs.FactoryMaker.getSingletonFactory(IndexDBStore); /* jshint ignore:line */
</code></pre></article></section></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use xlink:href="#search-icon"></use></svg> <input type="text" id="vpcKVYIppa" class="search-input" placeholder="Search..." autofocus></div><div class="search-result-c" id="fWwVHRuDuN"><span class="search-result-c-text">Type anything to view search result</span></div></div></div><div class="mobile-menu-icon-container"><button class="icon-button" id="mobile-menu" data-isopen="false" aria-label="menu"><svg><use xlink:href="#menu-icon"></use></svg></button></div><div id="mobile-sidebar" class="mobile-sidebar-container"><div class="mobile-sidebar-wrapper"><a href="/" class="sidebar-title sidebar-title-anchor">Home</a><div class="mobile-nav-links"></div><div 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