update unified playback manager
This commit is contained in:
Luke Pulverenti
parent
0b4a2c0092
commit
4b90291afc
12 changed files with 1880 additions and 261 deletions
937
dashboard-ui/bower_components/emby-webcomponents/chromecastplayer.js
vendored
Normal file
937
dashboard-ui/bower_components/emby-webcomponents/chromecastplayer.js
vendored
Normal file
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@ -0,0 +1,937 @@
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define(['appSettings', 'playbackManager', 'connectionManager', 'globalize', 'events'], function (appSettings, playbackManager, connectionManager, globalize, events) {
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'use strict';
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// Based on https://github.com/googlecast/CastVideos-chrome/blob/master/CastVideos.js
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var currentResolve;
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var currentReject;
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var PlayerName = 'Chromecast';
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function sendConnectionResult(isOk) {
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var resolve = currentResolve;
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var reject = currentReject;
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currentResolve = null;
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currentReject = null;
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if (isOk) {
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if (resolve) {
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resolve();
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}
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} else {
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if (reject) {
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reject();
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} else {
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playbackManager.removeActivePlayer(PlayerName);
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}
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}
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}
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/**
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* Constants of states for Chromecast device
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**/
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var DEVICE_STATE = {
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'IDLE': 0,
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'ACTIVE': 1,
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'WARNING': 2,
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'ERROR': 3
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};
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/**
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* Constants of states for CastPlayer
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**/
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var PLAYER_STATE = {
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'IDLE': 'IDLE',
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'LOADING': 'LOADING',
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'LOADED': 'LOADED',
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'PLAYING': 'PLAYING',
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'PAUSED': 'PAUSED',
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'STOPPED': 'STOPPED',
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'SEEKING': 'SEEKING',
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'ERROR': 'ERROR'
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};
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var applicationID = "2D4B1DA3";
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// This is the beta version used for testing new changes
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//applicationID = '27C4EB5B';
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var messageNamespace = 'urn:x-cast:com.connectsdk';
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var CastPlayer = function () {
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/* device variables */
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// @type {DEVICE_STATE} A state for device
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this.deviceState = DEVICE_STATE.IDLE;
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/* Cast player variables */
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// @type {Object} a chrome.cast.media.Media object
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this.currentMediaSession = null;
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// @type {string} a chrome.cast.Session object
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this.session = null;
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// @type {PLAYER_STATE} A state for Cast media player
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this.castPlayerState = PLAYER_STATE.IDLE;
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this.hasReceivers = false;
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// bind once - commit 2ebffc2271da0bc5e8b13821586aee2a2e3c7753
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this.errorHandler = this.onError.bind(this);
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this.mediaStatusUpdateHandler = this.onMediaStatusUpdate.bind(this);
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this.initializeCastPlayer();
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};
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/**
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* Initialize Cast media player
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* Initializes the API. Note that either successCallback and errorCallback will be
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* invoked once the API has finished initialization. The sessionListener and
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* receiverListener may be invoked at any time afterwards, and possibly more than once.
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*/
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CastPlayer.prototype.initializeCastPlayer = function () {
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var chrome = window.chrome;
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if (!chrome) {
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return;
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}
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if (!chrome.cast || !chrome.cast.isAvailable) {
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setTimeout(this.initializeCastPlayer.bind(this), 1000);
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return;
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}
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// request session
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var sessionRequest = new chrome.cast.SessionRequest(applicationID);
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var apiConfig = new chrome.cast.ApiConfig(sessionRequest,
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this.sessionListener.bind(this),
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this.receiverListener.bind(this),
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"origin_scoped");
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console.log('chromecast.initialize');
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chrome.cast.initialize(apiConfig, this.onInitSuccess.bind(this), this.errorHandler);
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};
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/**
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* Callback function for init success
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*/
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CastPlayer.prototype.onInitSuccess = function () {
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this.isInitialized = true;
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console.log("chromecast init success");
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};
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/**
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* Generic error callback function
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*/
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CastPlayer.prototype.onError = function () {
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console.log("chromecast error");
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};
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/**
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* @param {!Object} e A new session
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* This handles auto-join when a page is reloaded
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* When active session is detected, playback will automatically
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* join existing session and occur in Cast mode and media
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* status gets synced up with current media of the session
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*/
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CastPlayer.prototype.sessionListener = function (e) {
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this.session = e;
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if (this.session) {
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console.log('sessionListener ' + JSON.stringify(e));
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if (this.session.media[0]) {
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this.onMediaDiscovered('activeSession', this.session.media[0]);
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}
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this.onSessionConnected(e);
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}
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};
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function alertText(text, title) {
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require(['alert'], function (alert) {
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alert({
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text: text,
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title: title
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});
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});
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}
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CastPlayer.prototype.messageListener = function (namespace, message) {
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if (typeof (message) === 'string') {
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message = JSON.parse(message);
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}
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if (message.type == 'playbackerror') {
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var errorCode = message.data;
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setTimeout(function () {
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alertText(globalize.translate('MessagePlaybackError' + errorCode), globalize.translate('HeaderPlaybackError'));
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}, 300);
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}
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else if (message.type == 'connectionerror') {
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setTimeout(function () {
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alertText(globalize.translate('MessageChromecastConnectionError'), globalize.translate('HeaderError'));
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}, 300);
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}
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else if (message.type) {
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events.trigger(this, message.type, [message.data]);
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}
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};
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/**
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* @param {string} e Receiver availability
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* This indicates availability of receivers but
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* does not provide a list of device IDs
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*/
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CastPlayer.prototype.receiverListener = function (e) {
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if (e === 'available') {
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console.log("chromecast receiver found");
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this.hasReceivers = true;
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}
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else {
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console.log("chromecast receiver list empty");
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this.hasReceivers = false;
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}
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};
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/**
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* session update listener
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*/
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CastPlayer.prototype.sessionUpdateListener = function (isAlive) {
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console.log('sessionUpdateListener alive: ' + isAlive);
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if (isAlive) {
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}
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else {
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this.session = null;
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this.deviceState = DEVICE_STATE.IDLE;
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this.castPlayerState = PLAYER_STATE.IDLE;
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console.log('sessionUpdateListener: setting currentMediaSession to null');
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this.currentMediaSession = null;
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sendConnectionResult(false);
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}
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};
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/**
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* Requests that a receiver application session be created or joined. By default, the SessionRequest
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* passed to the API at initialization time is used; this may be overridden by passing a different
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* session request in opt_sessionRequest.
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*/
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CastPlayer.prototype.launchApp = function () {
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console.log("chromecast launching app...");
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chrome.cast.requestSession(this.onRequestSessionSuccess.bind(this), this.onLaunchError.bind(this));
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};
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/**
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* Callback function for request session success
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* @param {Object} e A chrome.cast.Session object
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*/
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CastPlayer.prototype.onRequestSessionSuccess = function (e) {
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console.log("chromecast session success: " + e.sessionId);
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this.onSessionConnected(e);
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};
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CastPlayer.prototype.onSessionConnected = function (session) {
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this.session = session;
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this.deviceState = DEVICE_STATE.ACTIVE;
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this.session.addMessageListener(messageNamespace, this.messageListener.bind(this));
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this.session.addMediaListener(this.sessionMediaListener.bind(this));
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this.session.addUpdateListener(this.sessionUpdateListener.bind(this));
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events.trigger(this, 'connect');
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this.sendMessage({
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options: {},
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command: 'Identify'
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});
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};
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/**
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* session update listener
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*/
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CastPlayer.prototype.sessionMediaListener = function (e) {
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console.log('sessionMediaListener');
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this.currentMediaSession = e;
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this.currentMediaSession.addUpdateListener(this.mediaStatusUpdateHandler);
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};
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/**
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* Callback function for launch error
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*/
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CastPlayer.prototype.onLaunchError = function () {
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console.log("chromecast launch error");
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this.deviceState = DEVICE_STATE.ERROR;
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sendConnectionResult(false);
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};
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/**
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* Stops the running receiver application associated with the session.
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*/
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CastPlayer.prototype.stopApp = function () {
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if (this.session) {
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this.session.stop(this.onStopAppSuccess.bind(this, 'Session stopped'),
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this.errorHandler);
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}
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};
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/**
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* Callback function for stop app success
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*/
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CastPlayer.prototype.onStopAppSuccess = function (message) {
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console.log(message);
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this.deviceState = DEVICE_STATE.IDLE;
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this.castPlayerState = PLAYER_STATE.IDLE;
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console.log('onStopAppSuccess: setting currentMediaSession to null');
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this.currentMediaSession = null;
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};
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/**
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* Loads media into a running receiver application
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* @param {Number} mediaIndex An index number to indicate current media content
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*/
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CastPlayer.prototype.loadMedia = function (options, command) {
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if (!this.session) {
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console.log("no session");
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return Promise.reject();
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}
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// Convert the items to smaller stubs to send the minimal amount of information
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options.items = options.items.map(function (i) {
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return {
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Id: i.Id,
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Name: i.Name,
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Type: i.Type,
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MediaType: i.MediaType,
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IsFolder: i.IsFolder
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};
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});
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return this.sendMessage({
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options: options,
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command: command
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});
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};
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CastPlayer.prototype.sendMessage = function (message) {
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var player = this;
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var receiverName = null;
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var session = player.session;
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if (session && session.receiver && session.receiver.friendlyName) {
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receiverName = session.receiver.friendlyName;
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}
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message = Object.assign(message, {
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userId: ApiClient.getCurrentUserId(),
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deviceId: ApiClient.deviceId(),
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accessToken: ApiClient.accessToken(),
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serverAddress: ApiClient.serverAddress(),
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receiverName: receiverName
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});
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var bitrateSetting = appSettings.maxChromecastBitrate();
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if (bitrateSetting) {
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message.maxBitrate = bitrateSetting;
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}
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return new Promise(function (resolve, reject) {
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require(['chromecasthelpers'], function (chromecasthelpers) {
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chromecasthelpers.getServerAddress(ApiClient).then(function (serverAddress) {
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message.serverAddress = serverAddress;
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player.sendMessageInternal(message).then(resolve, reject);
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}, reject);
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});
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});
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};
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CastPlayer.prototype.sendMessageInternal = function (message) {
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message = JSON.stringify(message);
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//console.log(message);
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this.session.sendMessage(messageNamespace, message, this.onPlayCommandSuccess.bind(this), this.errorHandler);
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return Promise.resolve();
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};
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CastPlayer.prototype.onPlayCommandSuccess = function () {
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console.log('Message was sent to receiver ok.');
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};
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/**
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* Callback function for loadMedia success
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* @param {Object} mediaSession A new media object.
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*/
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CastPlayer.prototype.onMediaDiscovered = function (how, mediaSession) {
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console.log("chromecast new media session ID:" + mediaSession.mediaSessionId + ' (' + how + ')');
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this.currentMediaSession = mediaSession;
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if (how == 'loadMedia') {
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this.castPlayerState = PLAYER_STATE.PLAYING;
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}
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if (how == 'activeSession') {
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this.castPlayerState = mediaSession.playerState;
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}
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this.currentMediaSession.addUpdateListener(this.mediaStatusUpdateHandler);
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};
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/**
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* Callback function for media status update from receiver
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* @param {!Boolean} e true/false
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*/
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CastPlayer.prototype.onMediaStatusUpdate = function (e) {
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if (e == false) {
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this.castPlayerState = PLAYER_STATE.IDLE;
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}
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console.log("chromecast updating media: " + e);
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};
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/**
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* Set media volume in Cast mode
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* @param {Boolean} mute A boolean
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*/
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CastPlayer.prototype.setReceiverVolume = function (mute, vol) {
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if (!this.currentMediaSession) {
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console.log('this.currentMediaSession is null');
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return;
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}
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if (!mute) {
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this.session.setReceiverVolumeLevel((vol || 1),
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this.mediaCommandSuccessCallback.bind(this),
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this.errorHandler);
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}
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else {
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this.session.setReceiverMuted(true,
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this.mediaCommandSuccessCallback.bind(this),
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this.errorHandler);
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}
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};
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/**
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* Mute CC
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*/
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CastPlayer.prototype.mute = function () {
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this.setReceiverVolume(true);
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};
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/**
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* Callback function for media command success
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*/
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CastPlayer.prototype.mediaCommandSuccessCallback = function (info, e) {
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console.log(info);
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};
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function chromecastPlayer() {
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var self = this;
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// Create Cast Player
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var castPlayer;
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// playbackManager needs this
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self.name = PlayerName;
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self.type = 'mediaplayer';
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self.id = 'chromecast';
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self.isLocalPlayer = false;
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self.getItemsForPlayback = function (query) {
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var userId = ApiClient.getCurrentUserId();
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if (query.Ids && query.Ids.split(',').length == 1) {
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return ApiClient.getItem(userId, query.Ids.split(',')).then(function (item) {
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return {
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Items: [item],
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TotalRecordCount: 1
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};
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});
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}
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else {
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query.Limit = query.Limit || 100;
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query.ExcludeLocationTypes = "Virtual";
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return ApiClient.getItems(userId, query);
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}
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};
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function initializeChromecast() {
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fileref.loaded = true;
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castPlayer = new CastPlayer();
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// To allow the native android app to override
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document.dispatchEvent(new CustomEvent("chromecastloaded", {
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detail: {
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player: self
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}
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}));
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events.on(castPlayer, "connect", function (e) {
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if (currentResolve) {
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sendConnectionResult(true);
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} else {
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playbackManager.setActivePlayer(PlayerName, self.getCurrentTargetInfo());
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}
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console.log('cc: connect');
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// Reset this so the next query doesn't make it appear like content is playing.
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self.lastPlayerData = {};
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});
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events.on(castPlayer, "playbackstart", function (e, data) {
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console.log('cc: playbackstart');
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castPlayer.initializeCastPlayer();
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var state = self.getPlayerStateInternal(data);
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events.trigger(self, "playbackstart", [state]);
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});
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events.on(castPlayer, "playbackstop", function (e, data) {
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console.log('cc: playbackstop');
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var state = self.getPlayerStateInternal(data);
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events.trigger(self, "playbackstop", [state]);
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// Reset this so the next query doesn't make it appear like content is playing.
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self.lastPlayerData = {};
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});
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events.on(castPlayer, "playbackprogress", function (e, data) {
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console.log('cc: positionchange');
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var state = self.getPlayerStateInternal(data);
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events.trigger(self, "timeupdate", [state]);
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});
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events.on(castPlayer, "volumechange", function (e, data) {
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console.log('cc: volumechange');
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var state = self.getPlayerStateInternal(data);
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events.trigger(self, "volumechange", [state]);
|
||||
});
|
||||
|
||||
events.on(castPlayer, "playstatechange", function (e, data) {
|
||||
|
||||
console.log('cc: playstatechange');
|
||||
var state = self.getPlayerStateInternal(data);
|
||||
|
||||
events.trigger(self, "pause", [state]);
|
||||
});
|
||||
}
|
||||
|
||||
self.play = function (options) {
|
||||
|
||||
return ApiClient.getCurrentUser().then(function (user) {
|
||||
|
||||
if (options.items) {
|
||||
|
||||
return self.playWithCommand(options, 'PlayNow');
|
||||
|
||||
} else {
|
||||
|
||||
return self.getItemsForPlayback({
|
||||
|
||||
Ids: options.ids.join(',')
|
||||
|
||||
}).then(function (result) {
|
||||
|
||||
options.items = result.Items;
|
||||
return self.playWithCommand(options, 'PlayNow');
|
||||
|
||||
});
|
||||
}
|
||||
|
||||
});
|
||||
|
||||
};
|
||||
|
||||
self.playWithCommand = function (options, command) {
|
||||
|
||||
if (!options.items) {
|
||||
var apiClient = connectionManager.getApiClient(options.serverId);
|
||||
return apiClient.getItem(apiClient.getCurrentUserId(), options.ids[0]).then(function (item) {
|
||||
|
||||
options.items = [item];
|
||||
return self.playWithCommand(options, command);
|
||||
});
|
||||
}
|
||||
|
||||
return castPlayer.loadMedia(options, command);
|
||||
};
|
||||
|
||||
self.unpause = function () {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'Unpause'
|
||||
});
|
||||
};
|
||||
|
||||
self.pause = function () {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'Pause'
|
||||
});
|
||||
};
|
||||
|
||||
self.shuffle = function (item) {
|
||||
|
||||
var apiClient = connectionManager.getApiClient(item.ServerId);
|
||||
var userId = apiClient.getCurrentUserId();
|
||||
|
||||
apiClient.getItem(userId, item.Id).then(function (item) {
|
||||
|
||||
self.playWithCommand({
|
||||
|
||||
items: [item]
|
||||
|
||||
}, 'Shuffle');
|
||||
|
||||
});
|
||||
|
||||
};
|
||||
|
||||
self.instantMix = function (item) {
|
||||
|
||||
var apiClient = connectionManager.getApiClient(item.ServerId);
|
||||
var userId = apiClient.getCurrentUserId();
|
||||
|
||||
apiClient.getItem(userId, item.Id).then(function (item) {
|
||||
|
||||
self.playWithCommand({
|
||||
|
||||
items: [item]
|
||||
|
||||
}, 'InstantMix');
|
||||
|
||||
});
|
||||
|
||||
};
|
||||
|
||||
self.canPlayMediaType = function (mediaType) {
|
||||
|
||||
mediaType = (mediaType || '').toLowerCase();
|
||||
return mediaType === 'audio' || mediaType === 'video';
|
||||
};
|
||||
|
||||
self.canQueueMediaType = function (mediaType) {
|
||||
return self.canPlayMediaType(mediaType);
|
||||
};
|
||||
|
||||
self.queue = function (options) {
|
||||
self.playWithCommand(options, 'PlayLast');
|
||||
};
|
||||
|
||||
self.queueNext = function (options) {
|
||||
self.playWithCommand(options, 'PlayNext');
|
||||
};
|
||||
|
||||
self.stop = function () {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'Stop'
|
||||
});
|
||||
};
|
||||
|
||||
self.displayContent = function (options) {
|
||||
|
||||
castPlayer.sendMessage({
|
||||
options: options,
|
||||
command: 'DisplayContent'
|
||||
});
|
||||
};
|
||||
|
||||
self.currentTime = function (val) {
|
||||
|
||||
if (val != null) {
|
||||
return self.seek(val);
|
||||
}
|
||||
|
||||
var state = self.lastPlayerData || {};
|
||||
state = state.PlayState || {};
|
||||
return state.PositionTicks;
|
||||
};
|
||||
|
||||
self.paused = function () {
|
||||
var state = self.lastPlayerData || {};
|
||||
state = state.PlayState || {};
|
||||
|
||||
return state.IsPaused;
|
||||
};
|
||||
|
||||
self.isMuted = function () {
|
||||
var state = self.lastPlayerData || {};
|
||||
state = state.PlayState || {};
|
||||
|
||||
return state.IsMuted;
|
||||
};
|
||||
|
||||
self.setMute = function (isMuted) {
|
||||
|
||||
if (isMuted) {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'Mute'
|
||||
});
|
||||
//castPlayer.setMute(true);
|
||||
} else {
|
||||
self.setVolume(self.getVolume() + 2);
|
||||
}
|
||||
};
|
||||
|
||||
self.setRepeatMode = function (mode) {
|
||||
castPlayer.sendMessage({
|
||||
options: {
|
||||
RepeatMode: mode
|
||||
},
|
||||
command: 'SetRepeatMode'
|
||||
});
|
||||
};
|
||||
|
||||
self.toggleMute = function () {
|
||||
|
||||
if (self.isMuted()) {
|
||||
self.setMute(false);
|
||||
} else {
|
||||
self.setMute(true);
|
||||
}
|
||||
};
|
||||
|
||||
self.getTargets = function () {
|
||||
|
||||
var targets = [];
|
||||
|
||||
if (castPlayer.hasReceivers) {
|
||||
targets.push(self.getCurrentTargetInfo());
|
||||
}
|
||||
|
||||
return Promise.resolve(targets);
|
||||
};
|
||||
|
||||
self.getCurrentTargetInfo = function () {
|
||||
|
||||
var appName = null;
|
||||
|
||||
if (castPlayer.session && castPlayer.session.receiver && castPlayer.session.receiver.friendlyName) {
|
||||
appName = castPlayer.session.receiver.friendlyName;
|
||||
}
|
||||
|
||||
return {
|
||||
name: PlayerName,
|
||||
id: PlayerName,
|
||||
playerName: PlayerName,
|
||||
playableMediaTypes: ["Audio", "Video"],
|
||||
isLocalPlayer: false,
|
||||
appName: PlayerName,
|
||||
deviceName: appName,
|
||||
supportedCommands: ["VolumeUp",
|
||||
"VolumeDown",
|
||||
"Mute",
|
||||
"Unmute",
|
||||
"ToggleMute",
|
||||
"SetVolume",
|
||||
"SetAudioStreamIndex",
|
||||
"SetSubtitleStreamIndex",
|
||||
"DisplayContent",
|
||||
"SetRepeatMode",
|
||||
"EndSession"]
|
||||
};
|
||||
};
|
||||
|
||||
self.seek = function (position) {
|
||||
|
||||
position = parseInt(position);
|
||||
|
||||
position = position / 10000000;
|
||||
|
||||
castPlayer.sendMessage({
|
||||
options: {
|
||||
position: position
|
||||
},
|
||||
command: 'Seek'
|
||||
});
|
||||
};
|
||||
|
||||
self.setAudioStreamIndex = function (index) {
|
||||
castPlayer.sendMessage({
|
||||
options: {
|
||||
index: index
|
||||
},
|
||||
command: 'SetAudioStreamIndex'
|
||||
});
|
||||
};
|
||||
|
||||
self.setSubtitleStreamIndex = function (index) {
|
||||
castPlayer.sendMessage({
|
||||
options: {
|
||||
index: index
|
||||
},
|
||||
command: 'SetSubtitleStreamIndex'
|
||||
});
|
||||
};
|
||||
|
||||
self.nextTrack = function () {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'NextTrack'
|
||||
});
|
||||
};
|
||||
|
||||
self.previousTrack = function () {
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'PreviousTrack'
|
||||
});
|
||||
};
|
||||
|
||||
self.beginPlayerUpdates = function () {
|
||||
// Setup polling here
|
||||
};
|
||||
|
||||
self.endPlayerUpdates = function () {
|
||||
// Stop polling here
|
||||
};
|
||||
|
||||
self.getVolume = function () {
|
||||
|
||||
var state = self.lastPlayerData || {};
|
||||
state = state.PlayState || {};
|
||||
|
||||
return state.VolumeLevel == null ? 100 : state.VolumeLevel;
|
||||
};
|
||||
|
||||
self.volumeDown = function () {
|
||||
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'VolumeDown'
|
||||
});
|
||||
};
|
||||
|
||||
self.endSession = function () {
|
||||
|
||||
self.stop();
|
||||
setTimeout(function () {
|
||||
castPlayer.stopApp();
|
||||
}, 1000);
|
||||
};
|
||||
|
||||
self.volumeUp = function () {
|
||||
|
||||
castPlayer.sendMessage({
|
||||
options: {},
|
||||
command: 'VolumeUp'
|
||||
});
|
||||
};
|
||||
|
||||
self.setVolume = function (vol) {
|
||||
|
||||
vol = Math.min(vol, 100);
|
||||
vol = Math.max(vol, 0);
|
||||
|
||||
//castPlayer.setReceiverVolume(false, (vol / 100));
|
||||
castPlayer.sendMessage({
|
||||
options: {
|
||||
volume: vol
|
||||
},
|
||||
command: 'SetVolume'
|
||||
});
|
||||
};
|
||||
|
||||
self.getPlayerState = function () {
|
||||
|
||||
var result = self.getPlayerStateInternal();
|
||||
return Promise.resolve(result);
|
||||
};
|
||||
|
||||
self.lastPlayerData = {};
|
||||
|
||||
self.getPlayerStateInternal = function (data) {
|
||||
|
||||
data = data || self.lastPlayerData;
|
||||
self.lastPlayerData = data;
|
||||
|
||||
console.log(JSON.stringify(data));
|
||||
return data;
|
||||
};
|
||||
|
||||
self.tryPair = function (target) {
|
||||
|
||||
if (castPlayer.deviceState != DEVICE_STATE.ACTIVE && castPlayer.isInitialized) {
|
||||
|
||||
return new Promise(function (resolve, reject) {
|
||||
currentResolve = resolve;
|
||||
currentReject = reject;
|
||||
|
||||
castPlayer.launchApp();
|
||||
});
|
||||
} else {
|
||||
|
||||
currentResolve = null;
|
||||
currentReject = null;
|
||||
|
||||
return Promise.reject();
|
||||
}
|
||||
};
|
||||
|
||||
if (fileref.loaded) {
|
||||
initializeChromecast();
|
||||
} else {
|
||||
fileref.onload = initializeChromecast;
|
||||
}
|
||||
}
|
||||
|
||||
var fileref = document.createElement('script');
|
||||
fileref.setAttribute("type", "text/javascript");
|
||||
fileref.onload = function () {
|
||||
fileref.loaded = true;
|
||||
};
|
||||
fileref.setAttribute("src", "https://www.gstatic.com/cv/js/sender/v1/cast_sender.js");
|
||||
document.querySelector('head').appendChild(fileref);
|
||||
|
||||
return chromecastPlayer;
|
||||
});
|
||||
Loading…
Add table
Add a link
Reference in a new issue