dashjs
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A reference client implementation for the playback of MPEG DASH via Javascript and compliant browsers.
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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">streaming_protection_models_ProtectionModel_01b.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.
*/
/**
* Initial implementation of EME
*
* Implemented by Google Chrome prior to v36
*
* @implements ProtectionModel
* @class
*/
import ProtectionKeyController from '../controllers/ProtectionKeyController';
import NeedKey from '../vo/NeedKey';
import DashJSError from '../../vo/DashJSError';
import KeyMessage from '../vo/KeyMessage';
import KeySystemConfiguration from '../vo/KeySystemConfiguration';
import KeySystemAccess from '../vo/KeySystemAccess';
import ProtectionErrors from '../errors/ProtectionErrors';
function ProtectionModel_01b(config) {
config = config || {};
const context = this.context;
const eventBus = config.eventBus;//Need to pass in here so we can use same instance since this is optional module
const events = config.events;
const debug = config.debug;
const api = config.api;
const errHandler = config.errHandler;
let instance,
logger,
videoElement,
keySystem,
protectionKeyController,
// With this version of the EME APIs, sessionIds are not assigned to
// sessions until the first key message is received. We are assuming
// that in the case of multiple sessions, key messages will be received
// in the order that generateKeyRequest() is called.
// Holding spot for newly-created sessions until we determine whether or
// not the CDM supports sessionIds
pendingSessions,
// List of sessions that have been initialized. Only the first position will
// be used in the case that the CDM does not support sessionIds
sessions,
// Not all CDMs support the notion of sessionIds. Without sessionIds
// there is no way for us to differentiate between sessions, therefore
// we must only allow a single session. Once we receive the first key
// message we can set this flag to determine if more sessions are allowed
moreSessionsAllowed,
// This is our main event handler for all desired HTMLMediaElement events
// related to EME. These events are translated into our API-independent
// versions of the same events
eventHandler;
function setup() {
logger = debug.getLogger(instance);
videoElement = null;
keySystem = null;
pendingSessions = [];
sessions = [];
protectionKeyController = ProtectionKeyController(context).getInstance();
eventHandler = createEventHandler();
}
function reset() {
if (videoElement) {
removeEventListeners();
}
for (let i = 0; i < sessions.length; i++) {
closeKeySession(sessions[i]);
}
eventBus.trigger(events.TEARDOWN_COMPLETE);
}
function getAllInitData() {
const retVal = [];
for (let i = 0; i < pendingSessions.length; i++) {
retVal.push(pendingSessions[i].initData);
}
for (let i = 0; i < sessions.length; i++) {
retVal.push(sessions[i].initData);
}
return retVal;
}
function getSessions() {
return sessions.concat(pendingSessions);
}
function requestKeySystemAccess(ksConfigurations) {
return new Promise((resolve, reject) => {
let ve = videoElement;
if (!ve) { // Must have a video element to do this capability tests
ve = document.createElement('video');
}
// Try key systems in order, first one with supported key system configuration
// is used
let found = false;
for (let ksIdx = 0; ksIdx < ksConfigurations.length; ksIdx++) {
const systemString = ksConfigurations[ksIdx].ks.systemString;
const configs = ksConfigurations[ksIdx].configs;
let supportedAudio = null;
let supportedVideo = null;
// Try key system configs in order, first one with supported audio/video
// is used
for (let configIdx = 0; configIdx < configs.length; configIdx++) {
//let audios = configs[configIdx].audioCapabilities;
const videos = configs[configIdx].videoCapabilities;
// Look for supported video container/codecs
if (videos && videos.length !== 0) {
supportedVideo = []; // Indicates that we have a requested video config
for (let videoIdx = 0; videoIdx < videos.length; videoIdx++) {
if (ve.canPlayType(videos[videoIdx].contentType, systemString) !== '') {
supportedVideo.push(videos[videoIdx]);
}
}
}
// No supported audio or video in this configuration OR we have
// requested audio or video configuration that is not supported
if ((!supportedAudio && !supportedVideo) ||
(supportedAudio && supportedAudio.length === 0) ||
(supportedVideo && supportedVideo.length === 0)) {
continue;
}
// This configuration is supported
found = true;
const ksConfig = new KeySystemConfiguration(supportedAudio, supportedVideo);
const ks = protectionKeyController.getKeySystemBySystemString(systemString);
const keySystemAccess = new KeySystemAccess(ks, ksConfig)
eventBus.trigger(events.KEY_SYSTEM_ACCESS_COMPLETE, { data: keySystemAccess });
resolve({ data: keySystemAccess });
break;
}
}
if (!found) {
const errorMessage = 'Key system access denied! -- No valid audio/video content configurations detected!';
eventBus.trigger(events.KEY_SYSTEM_ACCESS_COMPLETE, { error: errorMessage });
reject({ error: errorMessage });
}
})
}
function selectKeySystem(keySystemAccess) {
keySystem = keySystemAccess.keySystem;
return Promise.resolve(keySystem);
}
function setMediaElement(mediaElement) {
if (videoElement === mediaElement) {
return;
}
// Replacing the previous element
if (videoElement) {
removeEventListeners();
// Close any open sessions - avoids memory leak on LG webOS 2016/2017 TVs
for (var i = 0; i < sessions.length; i++) {
closeKeySession(sessions[i]);
}
sessions = [];
}
videoElement = mediaElement;
// Only if we are not detaching from the existing element
if (videoElement) {
videoElement.addEventListener(api.keyerror, eventHandler);
videoElement.addEventListener(api.needkey, eventHandler);
videoElement.addEventListener(api.keymessage, eventHandler);
videoElement.addEventListener(api.keyadded, eventHandler);
eventBus.trigger(events.VIDEO_ELEMENT_SELECTED);
}
}
function createKeySession(ksInfo) {
if (!keySystem) {
throw new Error('Can not create sessions until you have selected a key system');
}
// Determine if creating a new session is allowed
if (moreSessionsAllowed || sessions.length === 0) {
const newSession = { // Implements SessionToken
sessionId: null,
keyId: ksInfo.keyId,
initData: ksInfo.initData,
getKeyId: function () {
return this.keyId;
},
getSessionId: function () {
return this.sessionId;
},
getExpirationTime: function () {
return NaN;
},
getSessionType: function () {
return 'temporary';
}
};
pendingSessions.push(newSession);
// Send our request to the CDM
videoElement[api.generateKeyRequest](keySystem.systemString, new Uint8Array(ksInfo.initData));
return newSession;
} else {
throw new Error('Multiple sessions not allowed!');
}
}
function updateKeySession(sessionToken, message) {
const sessionId = sessionToken.sessionId;
if (!protectionKeyController.isClearKey(keySystem)) {
// Send our request to the CDM
videoElement[api.addKey](keySystem.systemString,
new Uint8Array(message), new Uint8Array(sessionToken.initData), sessionId);
} else {
// For clearkey, message is a ClearKeyKeySet
for (let i = 0; i < message.keyPairs.length; i++) {
videoElement[api.addKey](keySystem.systemString,
message.keyPairs[i].key, message.keyPairs[i].keyID, sessionId);
}
}
eventBus.trigger(events.KEY_SESSION_UPDATED);
}
function closeKeySession(sessionToken) {
// Send our request to the CDM
try {
videoElement[api.cancelKeyRequest](keySystem.systemString, sessionToken.sessionId);
} catch (error) {
eventBus.trigger(events.KEY_SESSION_CLOSED, {
data: null,
error: 'Error closing session (' + sessionToken.sessionId + ') ' + error.message
});
}
}
function setServerCertificate(/*serverCertificate*/) { /* Not supported */
}
function loadKeySession(/*ksInfo*/) { /* Not supported */
}
function removeKeySession(/*sessionToken*/) { /* Not supported */
}
function createEventHandler() {
return {
handleEvent: function (event) {
let sessionToken = null;
switch (event.type) {
case api.needkey:
let initData = ArrayBuffer.isView(event.initData) ? event.initData.buffer : event.initData;
eventBus.trigger(events.NEED_KEY, { key: new NeedKey(initData, 'cenc') });
break;
case api.keyerror:
sessionToken = findSessionByID(sessions, event.sessionId);
if (!sessionToken) {
sessionToken = findSessionByID(pendingSessions, event.sessionId);
}
if (sessionToken) {
let code = ProtectionErrors.MEDIA_KEYERR_CODE;
let msg = '';
switch (event.errorCode.code) {
case 1:
code = ProtectionErrors.MEDIA_KEYERR_UNKNOWN_CODE;
msg += 'MEDIA_KEYERR_UNKNOWN - ' + ProtectionErrors.MEDIA_KEYERR_UNKNOWN_MESSAGE;
break;
case 2:
code = ProtectionErrors.MEDIA_KEYERR_CLIENT_CODE;
msg += 'MEDIA_KEYERR_CLIENT - ' + ProtectionErrors.MEDIA_KEYERR_CLIENT_MESSAGE;
break;
case 3:
code = ProtectionErrors.MEDIA_KEYERR_SERVICE_CODE;
msg += 'MEDIA_KEYERR_SERVICE - ' + ProtectionErrors.MEDIA_KEYERR_SERVICE_MESSAGE;
break;
case 4:
code = ProtectionErrors.MEDIA_KEYERR_OUTPUT_CODE;
msg += 'MEDIA_KEYERR_OUTPUT - ' + ProtectionErrors.MEDIA_KEYERR_OUTPUT_MESSAGE;
break;
case 5:
code = ProtectionErrors.MEDIA_KEYERR_HARDWARECHANGE_CODE;
msg += 'MEDIA_KEYERR_HARDWARECHANGE - ' + ProtectionErrors.MEDIA_KEYERR_HARDWARECHANGE_MESSAGE;
break;
case 6:
code = ProtectionErrors.MEDIA_KEYERR_DOMAIN_CODE;
msg += 'MEDIA_KEYERR_DOMAIN - ' + ProtectionErrors.MEDIA_KEYERR_DOMAIN_MESSAGE;
break;
}
msg += ' System Code = ' + event.systemCode;
// TODO: Build error string based on key error
eventBus.trigger(events.KEY_ERROR, { error: new DashJSError(code, msg, sessionToken) });
} else {
logger.error('No session token found for key error');
}
break;
case api.keyadded:
sessionToken = findSessionByID(sessions, event.sessionId);
if (!sessionToken) {
sessionToken = findSessionByID(pendingSessions, event.sessionId);
}
if (sessionToken) {
logger.debug('DRM: Key added.');
eventBus.trigger(events.KEY_ADDED, { data: sessionToken });//TODO not sure anything is using sessionToken? why there?
} else {
logger.debug('No session token found for key added');
}
break;
case api.keymessage:
// If this CDM does not support session IDs, we will be limited
// to a single session
moreSessionsAllowed = (event.sessionId !== null) && (event.sessionId !== undefined);
// SessionIDs supported
if (moreSessionsAllowed) {
// Attempt to find an uninitialized token with this sessionId
sessionToken = findSessionByID(sessions, event.sessionId);
if (!sessionToken && pendingSessions.length > 0) {
// This is the first message for our latest session, so set the
// sessionId and add it to our list
sessionToken = pendingSessions.shift();
sessions.push(sessionToken);
sessionToken.sessionId = event.sessionId;
eventBus.trigger(events.KEY_SESSION_CREATED, { data: sessionToken });
}
} else if (pendingSessions.length > 0) { // SessionIDs not supported
sessionToken = pendingSessions.shift();
sessions.push(sessionToken);
if (pendingSessions.length !== 0) {
errHandler.error(new DashJSError(ProtectionErrors.MEDIA_KEY_MESSAGE_ERROR_CODE, ProtectionErrors.MEDIA_KEY_MESSAGE_ERROR_MESSAGE));
}
}
if (sessionToken) {
let message = ArrayBuffer.isView(event.message) ? event.message.buffer : event.message;
// For ClearKey, the spec mandates that you pass this message to the
// addKey method, so we always save it to the token since there is no
// way to tell which key system is in use
sessionToken.keyMessage = message;
eventBus.trigger(events.INTERNAL_KEY_MESSAGE, { data: new KeyMessage(sessionToken, message, event.defaultURL) });
} else {
logger.warn('No session token found for key message');
}
break;
}
}
};
}
/**
* Helper function to retrieve the stored session token based on a given
* sessionId value
*
* @param {Array} sessionArray - the array of sessions to search
* @param {*} sessionId - the sessionId to search for
* @returns {*} the session token with the given sessionId
*/
function findSessionByID(sessionArray, sessionId) {
if (!sessionId || !sessionArray) {
return null;
} else {
const len = sessionArray.length;
for (let i = 0; i < len; i++) {
if (sessionArray[i].sessionId == sessionId) {
return sessionArray[i];
}
}
return null;
}
}
function removeEventListeners() {
videoElement.removeEventListener(api.keyerror, eventHandler);
videoElement.removeEventListener(api.needkey, eventHandler);
videoElement.removeEventListener(api.keymessage, eventHandler);
videoElement.removeEventListener(api.keyadded, eventHandler);
}
instance = {
getAllInitData,
getSessions,
requestKeySystemAccess,
selectKeySystem,
setMediaElement,
createKeySession,
updateKeySession,
closeKeySession,
setServerCertificate,
loadKeySession,
removeKeySession,
stop: reset,
reset
};
setup();
return instance;
}
ProtectionModel_01b.__dashjs_factory_name = 'ProtectionModel_01b';
export default dashjs.FactoryMaker.getClassFactory(ProtectionModel_01b); /* 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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