mStream/webapp/assets/js/mstream.player.js
2021-02-27 13:18:15 -05:00

866 lines
26 KiB
JavaScript

const MSTREAMPLAYER = (() => {
const mstreamModule = {};
// Playlist variables
mstreamModule.positionCache = { val: -1 };
mstreamModule.playlist = [];
const cacheTimeout = 30000;
var currentReplayGainAmp = 1.0;
mstreamModule.editSongMetadata = function (key, value, songIndex) {
for (var i = 0, len = mstreamModule.playlist.length; i < len; i++) {
if ((mstreamModule.playlist[i].metadata && mstreamModule.playlist[i].metadata.hash === mstreamModule.playlist[songIndex].metadata.hash) || mstreamModule.playlist[i].filepath === mstreamModule.playlist[songIndex].filepath) {
mstreamModule.playlist[i].metadata[key] = value;
}
}
}
mstreamModule.changeVolume = (newVolume) => {
if (isNaN(newVolume) || newVolume < 0 || newVolume > 100) {
return;
}
mstreamModule.playerStats.volume = newVolume;
const rgainAdjustedVolume = newVolume / 100 * currentReplayGainAmp;
getCurrentPlayer().playerObject.volume = rgainAdjustedVolume;
getOtherPlayer().playerObject.volume = rgainAdjustedVolume;
}
// Scrobble function
// This is a placeholder function that the API layer can take hold of to implement the scrobble call
var scrobbleTimer;
mstreamModule.scrobble = function () {
return false;
}
// The audioData looks like this
// var song = {
// "url":"vPath/path/to/song.mp3?token=xxx",
// "filepath": "path/to/song.mp3"
// }
mstreamModule.addSong = (audioData, forceAutoPlayOff) => {
if (!audioData.url || audioData.url == false) {
return false;
}
audioData.error = false;
// Handle shuffle
if (mstreamModule.playerStats.shuffle === true) {
const pos = Math.floor(Math.random() * (shuffleCache.length + 1));
shuffleCache.splice(pos, 0, audioData);
}
return addSongToPlaylist(audioData, forceAutoPlayOff);
}
mstreamModule.getRandomSong = (callback) => {
const params = {
ignoreList: autoDjIgnoreArray,
minRating: mstreamModule.minRating,
ignoreVPaths: mstreamModule.ignoreVPaths
};
MSTREAMAPI.getRandomSong(params, function (res, err) {
if (err) {
callback(null, err);
return;
}
// Get first song from array
const firstSong = res.songs[0];
autoDjIgnoreArray = res.ignoreList;
callback(firstSong, null);
});
}
function autoDJ() {
// Call mStream API for random song
mstreamModule.getRandomSong(function (res, err) {
if (err) {
mstreamModule.playerStats.autoDJ = false;
iziToast.warning({
title: 'Auto DJ Failed',
message: err.responseJSON.error ? err.responseJSON.error : '',
position: 'topCenter',
timeout: 3500
});
return;
}
// Add song to playlist
MSTREAMAPI.addSongWizard(res.filepath, res.metadata);
});
}
function addSongToPlaylist(song, forceAutoPlayOff) {
mstreamModule.playlist.push(song);
// If this the first song in the list
if (mstreamModule.playlist.length === 1) {
mstreamModule.positionCache.val = 0;
return goToSong(mstreamModule.positionCache.val, forceAutoPlayOff);
}
// TODO: Check if we are at the end of the playlist and nothing is playing.
// Cache song if appropriate
if ((!cacheTimer) && mstreamModule.playlist.length > mstreamModule.positionCache.val + 1 && mstreamModule.positionCache.val === mstreamModule.playlist.length -2) {
clearTimeout(cacheTimer);
cacheTimer = setTimeout(function () {
setCachedSong(mstreamModule.positionCache.val + 1);
cacheTimer = undefined;
}, cacheTimeout);
}
return true;
}
mstreamModule.clearAndPlay = function (song) {
// Clear playlist
mstreamModule.playlist = [];
return addSong(song);
}
mstreamModule.clearPlaylist = function () {
while (mstreamModule.playlist.length > 0) { mstreamModule.playlist.pop(); }
mstreamModule.positionCache.val = -1;
clearEnd();
// Clear shuffle as well
if (mstreamModule.playerStats.shuffle === true) {
// Clear Shuffle Cache
while (shuffleCache.length > 0) { shuffleCache.pop(); }
}
if (mstreamModule.playerStats.autoDJ === true) {
autoDJ();
}
return true;
}
mstreamModule.nextSong = function () {
// Stop the current song
return goToNextSong();
}
mstreamModule.previousSong = function () {
return goToPreviousSong();
}
mstreamModule.goToSongAtPosition = function (position) {
if (!mstreamModule.playlist[position]) {
return false;
}
clearEnd();
mstreamModule.positionCache.val = position;
return goToSong(mstreamModule.positionCache.val);
}
mstreamModule.removeSongAtPosition = function (position, sanityCheckUrl) {
// Check that position is filled
if (position > mstreamModule.playlist.length || position < 0) {
return false;
}
// If sanityCheckUrl, check that url are the same
if (sanityCheckUrl && sanityCheckUrl != mstreamModule.playlist[position].url) {
return false;
}
var removedSong = mstreamModule.playlist[position];
// Remove song
mstreamModule.playlist.splice(position, 1);
if (mstreamModule.playerStats.shuffle === true) {
// Remove song from shuffle Cache
for (var i = 0, len = shuffleCache.length; i < len; i++) {
// Check if this is the current song
if (removedSong === shuffleCache[i]) {
shuffleCache.splice(i, 1);
}
}
for (var i = 0, len = shufflePrevious.length; i < len; i++) {
// Check if this is the current song
if (removedSong === shufflePrevious[i]) {
shufflePrevious.splice(i, 1);
}
}
}
// Handle case where user removes current song and it's the last song in the playlist
if (position === mstreamModule.positionCache.val && position === mstreamModule.playlist.length) {
clearEnd();
// Go to random song if random is set
if (mstreamModule.playerStats.shuffle === true) {
goToNextSong();
} else if (mstreamModule.playerStats.shouldLoop === true) { // loop is set
mstreamModule.positionCache.val = 0;
goToSong(mstreamModule.positionCache.val);
} else { // Reset to start is nothing is set
mstreamModule.positionCache.val = -1;
}
} else if (position === mstreamModule.positionCache.val) { // User removes currently playing song
// Go to next song
clearEnd();
// If random is set, go to random song
if (mstreamModule.playerStats.shuffle === true) {
goToNextSong();
} else {
goToSong(mstreamModule.positionCache.val);
}
} else if (position < mstreamModule.positionCache.val) {
// Lower position cache by 1 if necessary
mstreamModule.positionCache.val--;
} else if (position === (mstreamModule.positionCache.val + 1)) {
if(mstreamModule.positionCache.val === (mstreamModule.playlist.length - 1) && mstreamModule.playerStats.autoDJ === true) {
autoDJ();
}
// If the next song is removed, reset cache
clearTimeout(cacheTimer);
cacheTimer = setTimeout(function () {
cacheTimer = undefined;
if(mstreamModule.playerStats.shuffle === true) {
// TODO: This doesn't actually get triggered if remove the next shuffle song
// if(shuffleCache[0]) {
// for (var i = 0; i < mstreamModule.playlist.length; i++) {
// if(mstreamModule.playlist[i] === shuffleCache[shuffleCache.length - 1]) {
// setCachedSong(i);
// break;
// }
// }
// }
} else if (mstreamModule.playerStats.shouldLoop === true) {
if (mstreamModule.positionCache.val === (mstreamModule.playlist.length - 1)) {
setCachedSong(0);
} else {
setCachedSong(mstreamModule.positionCache.val + 1);
}
} else {
setCachedSong(mstreamModule.positionCache.val + 1);
}
}, cacheTimeout);
}
}
mstreamModule.getCurrentSong = () => {
return getCurrentPlayer().songObject;
}
function goToPreviousSong() {
// If random is set, go to previous song from cache
if (mstreamModule.playerStats.shuffle === true) {
// Check that there is a previous song to go back to
if (shufflePrevious.length <= 1) {
return;
}
// Pop a song and go to the last song
var nextSong = shufflePrevious.pop();
shuffleCache.push(nextSong);
var currentSong = shufflePrevious[shufflePrevious.length - 1];
// Reset position cache
for (var i = 0, len = mstreamModule.playlist.length; i < len; i++) {
// Check if this is the current song
if (currentSong === mstreamModule.playlist[i]) {
mstreamModule.positionCache.val = i;
}
}
clearEnd();
goToSong(mstreamModule.positionCache.val);
return;
}
// Make sure there is a previous song
if (mstreamModule.positionCache.val < 1) {
return false;
}
// Set previous song and play
clearEnd();
mstreamModule.positionCache.val--;
return goToSong(mstreamModule.positionCache.val);
}
function goToNextSong() {
// If random is set, go to random song
if (mstreamModule.playerStats.shuffle === true) {
// Chose a random value
var nextSong = shuffleCache.pop();
// Prevent same song from playing twice after a re-shuffle
if (nextSong === mstreamModule.getCurrentSong()) {
console.log('DUPEEEEE');
shuffleCache.unshift(nextSong);
nextSong = shuffleCache.pop();
}
if (shuffleCache.length === 0) {
newShuffle();
}
// Reset position cache
for (var i = 0, len = mstreamModule.playlist.length; i < len; i++) {
// Check if this is the current song
if (nextSong === mstreamModule.playlist[i]) {
mstreamModule.positionCache.val = i;
}
}
clearEnd();
goToSong(mstreamModule.positionCache.val);
// Remove duplicates from shuffle previous
for (var i = 0, len = shufflePrevious.length; i < len; i++) {
// Check if this is the current song
if (nextSong === shufflePrevious[i]) {
shufflePrevious.splice(i, 1);
}
}
shufflePrevious.push(nextSong);
return;
}
// Check if the next song exists
if (!mstreamModule.playlist[mstreamModule.positionCache.val + 1]) {
// If loop is set and no other song, go back to first song
if (mstreamModule.playerStats.shouldLoop === true && mstreamModule.playlist.length > 0) {
mstreamModule.positionCache.val = 0;
clearEnd();
return goToSong(mstreamModule.positionCache.val);
}
return false;
}
// Load up next song
mstreamModule.positionCache.val++;
clearEnd();
return goToSong(mstreamModule.positionCache.val);
}
function getCurrentPlayer() {
if (curP === 'A') {
return playerA;
} else if (curP === 'B') {
return playerB;
}
return false;
}
function getOtherPlayer() {
if (curP === 'A') {
return playerB;
} else if (curP === 'B') {
return playerA;
}
return false;
}
function flipFlop() {
if (curP === 'A') {
curP = 'B';
} else if (curP === 'B') {
curP = 'A';
}
return curP;
}
function goToSong(position, forceAutoPlayOff) {
if (!mstreamModule.playlist[position]) {
return false;
}
if (mstreamModule.playerStats.autoDJ === true && position === mstreamModule.playlist.length - 1) {
autoDJ();
}
// Reset Duration
mstreamModule.playerStats.duration = 0;
mstreamModule.playerStats.currentTime = 0;
// Stop the current song
getCurrentPlayer().playerObject.pause();
getCurrentPlayer().playerObject.currentTime = 0;
// Song is cached
flipFlop();
if (getCurrentPlayer().songObject === mstreamModule.playlist[position]) {
// Play
mstreamModule.playPause();
} else {
// console.log('DID NOT USE CACHE');
setMedia(mstreamModule.playlist[position], getCurrentPlayer(), typeof forceAutoPlayOff !== 'undefined' ? !forceAutoPlayOff : true);
}
mstreamModule.resetCurrentMetadata();
// connect to visualizer
if (typeof VIZ !== 'undefined') {
var audioCtx = VIZ.get();
try {
var audioNode = getCurrentPlayer().playerObject;
if (!audioNode.previouslyConnectedViz) {
var analyser = audioCtx.createAnalyser();
var source = audioCtx.createMediaElementSource(audioNode);
source.connect(analyser);
source.connect(audioCtx.destination);
VIZ.connect(analyser);
audioNode.previouslyConnectedViz = true;
}
} catch( err) {
console.log(err);
}
}
// Cache next song
// The timer prevents excessive caching when the user starts button mashing
clearTimeout(cacheTimer);
cacheTimer = setTimeout(function () {
cacheTimer = undefined;
if(mstreamModule.playerStats.shuffle === true) {
if(shuffleCache[0]) {
for (var i = 0; i < mstreamModule.playlist.length; i++) {
if(mstreamModule.playlist[i] === shuffleCache[shuffleCache.length - 1]) {
setCachedSong(i);
break;
}
}
}
} else if (mstreamModule.playerStats.shouldLoop === true) {
if (position === (mstreamModule.playlist.length - 1)) {
setCachedSong(0);
} else {
setCachedSong(position + 1);
}
} else {
setCachedSong(position + 1);
}
}, cacheTimeout);
// Scrobble song after 30 seconds
clearTimeout(scrobbleTimer);
scrobbleTimer = setTimeout(function () { mstreamModule.scrobble() }, 30000);
}
// Should be called whenever the "metadata" field of the current song is changed, or
// the current song is changed.
mstreamModule.resetCurrentMetadata = () => {
const curSong = getCurrentPlayer().songObject;
mstreamModule.playerStats.metadata.artist = curSong.metadata && curSong.metadata.artist ? curSong.metadata.artist : "";
mstreamModule.playerStats.metadata.album = curSong.metadata && curSong.metadata.album ? curSong.metadata.album : "";
mstreamModule.playerStats.metadata.track = curSong.metadata && curSong.metadata.track ? curSong.metadata.track : "";
mstreamModule.playerStats.metadata.title = curSong.metadata && curSong.metadata.title ? curSong.metadata.title : "";
mstreamModule.playerStats.metadata.year = curSong.metadata && curSong.metadata.year ? curSong.metadata.year : "";
mstreamModule.playerStats.metadata['album-art'] = curSong.metadata && curSong.metadata['album-art'] ? curSong.metadata['album-art'] : "";
mstreamModule.playerStats.metadata['replaygain-track-db'] = curSong.metadata && curSong.metadata['replaygain-track-db'] ? curSong.metadata['replaygain-track-db'] : "";
if ('mediaSession' in navigator) {
navigator.mediaSession.metadata = new MediaMetadata({
title: mstreamModule.playerStats.metadata.title,
artist: mstreamModule.playerStats.metadata.artist,
album: mstreamModule.playerStats.metadata.album,
artwork: [] //TODO: Get album art working here
});
}
mstreamModule.updateReplayGainFromSong(curSong);
}
// Update ReplayGain state from given song, if required.
mstreamModule.updateReplayGainFromSong = function (song) {
console.assert(song);
var newRgAmpValue = undefined;
if (mstreamModule.playerStats.replayGain) {
if (song.metadata) {
const rgainDb = song.metadata['replaygain-track-db'];
if (rgainDb) {
// Note: the music-metadata package has a similar calculation in its Utils class, and that's used to
// calculate a returned 'ratio' value. However, the calculation used there is actually calculating the power
// ratio and not the amplitude ratio as required. As power is amplitude squared, that results in a volume
// reduction that's too small (i.e. 0.25**2 = 0.00625).
newRgAmpValue = Math.pow(10, (rgainDb + mstreamModule.playerStats.replayGainPreGainDb) / 20)
}
}
if (newRgAmpValue === undefined) {
currentReplayGainAmp = 0.316; // -10 db for songs without ReplayGain info.
} else {
currentReplayGainAmp = newRgAmpValue;
}
} else {
currentReplayGainAmp = 1.0;
}
mstreamModule.changeVolume(mstreamModule.playerStats.volume);
}
mstreamModule.resetPositionCache = function () {
var len;
const curSong = getCurrentPlayer().songObject;
for (var i = 0, len = mstreamModule.playlist.length; i < len; i++) {
// Check if this is the current song
if (curSong === mstreamModule.playlist[i]) {
mstreamModule.positionCache.val = i;
return;
}
}
// No song found, reset
mstreamModule.positionCache.val = -1;
}
// ========================= Howler Player ===============
function howlPlayerPlay() {
const localPlayer = getCurrentPlayer();
mstreamModule.playerStats.playing = true;
localPlayer.playerObject.play();
}
function howlPlayerPause() {
const localPlayer = getCurrentPlayer();
mstreamModule.playerStats.playing = false;
localPlayer.playerObject.pause();
}
function howlPlayerPlayPause() {
const localPlayer = getCurrentPlayer();
// TODO: Check that media is loaded
if (localPlayer.playerObject.paused === false) {
mstreamModule.playerStats.playing = false;
localPlayer.playerObject.pause();
} else {
localPlayer.playerObject.play();
mstreamModule.playerStats.playing = true;
}
}
// ========================================================
function clearEnd() {
const localPlayer = getCurrentPlayer();
localPlayer.playerObject.onended = () => {};
}
// Player
// Event: On Song end
// Set Media
// Play, pause, skip, etc
mstreamModule.playPause = () => {
return howlPlayerPlayPause();
}
mstreamModule.changePlaybackRate = (newRate) => {
newRate = Number(newRate);
if (isNaN(newRate) || newRate > 10 || newRate < 0.1) {
console.log('Bad New Rate');
return;
}
mstreamModule.playerStats.playbackRate = newRate;
const lPlayer = getCurrentPlayer();
lPlayer.playerObject.playbackRate = newRate;
const oPlayer = getOtherPlayer();
oPlayer.playerObject.playbackRate = newRate;
}
mstreamModule.playerStats = {
playbackRate: 1,
duration: 0,
currentTime: 0,
playing: false,
shouldLoop: false,
shuffle: false,
volume: 100,
metadata: {
"artist": "",
"album": "",
"track": "",
"title": "",
"year": "",
"album-art": "",
},
replayGain: false,
replayGainPreGainDb: 0
}
function makeNewPlayer(playerObj) {
playerObj.playerObject = new Audio();
playerObj.playerObject.volume = mstreamModule.playerStats.volume/100;
playerObj.playerObject.playbackRate = mstreamModule.playerStats.playbackRate;
playerObj.playerObject.addEventListener('error', err => {
console.log(err)
if (playerObj.songObject) { playerObj.songObject.error = true; }
if (iziToast) {
iziToast.error({
title: 'Failed To Play Song',
position: 'topCenter',
timeout: 3500
});
}
if (playerObj === getCurrentPlayer()) {
goToNextSong();
}else {
// Invalidate cache
const newOtherPlayerObject = getOtherPlayer();
newOtherPlayerObject.songObject = false;
playerObj.playerObject.onended = () => {};
}
});
playerObj.playerObject.addEventListener('timeupdate', err => {
mstreamModule.playerStats.currentTime = getCurrentPlayer().playerObject.currentTime;
mstreamModule.playerStats.duration = getCurrentPlayer().playerObject.duration;
});
}
const playerA = {
playerObject: false,
songObject: false
}
const playerB = {
playerObject: false,
songObject: false
}
makeNewPlayer(playerA);
makeNewPlayer(playerB);
var curP = 'A';
function setMedia(song, player, play) {
player.playerObject.src = song.url;
player.songObject = song;
player.playerObject.load();
player.playerObject.playbackRate = mstreamModule.playerStats.playbackRate;
player.playerObject.onended = () => {
callMeOnStreamEnd();
}
if (play == true) {
howlPlayerPlay();
}
}
function callMeOnStreamEnd() {
mstreamModule.playerStats.playing = false;
// Go to next song
goToNextSong();
}
mstreamModule.goBackSeek = (backBy) => {
const lPlayer = getCurrentPlayer();
var seekTo = lPlayer.playerObject.currentTime - backBy;
if (seekTo < 0) {
seekTo = 0;
}
lPlayer.playerObject.currentTime = seekTo;
}
mstreamModule.goForwardSeek = (forwardBy) => {
const lPlayer = getCurrentPlayer();
if (lPlayer.playerObject.currentTime > (lPlayer.playerObject.duration - 5) ) {
return;
}
let seekTo = lPlayer.playerObject.currentTime + forwardBy;
if (seekTo > (lPlayer.playerObject.duration - 5)) {
seekTo = lPlayer.playerObject.duration - 5;
}
lPlayer.playerObject.currentTime = seekTo;
}
// NOTE: Seektime is in seconds
mstreamModule.seek = (seekTime) => {
const lPlayer = getCurrentPlayer();
// Check that the seek number is less than the duration
if (seekTime < 0 || seekTime > lPlayer.playerObject.duration) {
return false;
}
lPlayer.playerObject.currentTime = seektime;
}
mstreamModule.seekByPercentage = (percentage) => {
if (percentage < 0 || percentage > 99) {
return false;
}
const lPlayer = getCurrentPlayer();
if (!lPlayer.songObject) { return; }
const seektime = (percentage * lPlayer.playerObject.duration) / 100;
lPlayer.playerObject.currentTime = seektime;
}
// var timers = {};
// startTime(100);
// function startTime(interval) {
// if (timers.sliderUpdateInterval) { clearInterval(timers.sliderUpdateInterval); }
// timers.sliderUpdateInterval = setInterval(() => {
// const lPlayer = getCurrentPlayer();
// mstreamModule.playerStats.currentTime = lPlayer.playerObject.currentTime;
// mstreamModule.playerStats.duration = lPlayer.playerObject.duration;
// }, interval);
// }
// Timer for caching. Helps prevent excess caching due to button mashing
var cacheTimer;
function setCachedSong(position) {
// console.log(' ATTEMPTING TO CACHE');
if (!mstreamModule.playlist[position]) {
//console.log(' FAILED TO CACHE');
return false;
}
// console.log(mstreamModule.playlist[position])
var oPlayer = getOtherPlayer();
setMedia(mstreamModule.playlist[position], oPlayer, false);
// console.log(' IT CACHED!!!!!!');
return true;
}
// Loop
mstreamModule.setRepeat = (newValue) => {
if (typeof (newValue) !== "boolean") { return; }
if (mstreamModule.playerStats.autoDJ === true) { return; }
mstreamModule.playerStats.shouldLoop = newValue;
}
mstreamModule.toggleRepeat = () => {
if (mstreamModule.playerStats.autoDJ === true) { return; }
mstreamModule.playerStats.shouldLoop = !mstreamModule.playerStats.shouldLoop;
return mstreamModule.playerStats.shouldLoop;
}
// Random Song
var shuffleCache = []; // Cache the last 5 songs played to avoid repeats
var shufflePrevious = [];
mstreamModule.setShuffle = (newValue) => {
if (typeof newValue !== "boolean") { return; }
if (mstreamModule.playerStats.autoDJ === true) { return; }
mstreamModule.playerStats.shuffle = newValue;
mstreamModule.playerStats.shuffle === true ? newShuffle() : turnShuffleOff();
}
mstreamModule.toggleShuffle = () => {
if (mstreamModule.playerStats.autoDJ === true) { return; }
mstreamModule.playerStats.shuffle = !mstreamModule.playerStats.shuffle;
mstreamModule.playerStats.shuffle === true ? newShuffle() : turnShuffleOff();
return mstreamModule.playerStats.shuffle;
}
function newShuffle() {
shuffleCache = shuffle(mstreamModule.playlist.slice(0));
}
function turnShuffleOff() {
shufflePrevious = [];
shuffleCache = [];
}
function shuffle(array) {
var currentIndex = array.length
, temporaryValue
, randomIndex
;
// While there remain elements to shuffle...
while (0 !== currentIndex) {
// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;
// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}
return array;
}
// AutoDJ
mstreamModule.playerStats.autoDJ = false;
var autoDjIgnoreArray = [];
mstreamModule.ignoreVPaths = {};
mstreamModule.minRating = 0;
mstreamModule.toggleAutoDJ = () => {
mstreamModule.playerStats.autoDJ = !mstreamModule.playerStats.autoDJ;
if (mstreamModule.playerStats.autoDJ === true) {
// Turn off shuffle & loop
mstreamModule.playerStats.shuffle = false;
mstreamModule.playerStats.shouldLoop = false;
// Add song if necessary
if (mstreamModule.playlist.length === 0 || mstreamModule.positionCache.val === mstreamModule.playlist.length - 1) {
autoDJ();
}
}
return mstreamModule.playerStats.autoDJ;
}
// ReplayGain
mstreamModule.setReplayGainActive = (isActive) => {
mstreamModule.playerStats.replayGain = isActive;
if (getCurrentPlayer().songObject) {
mstreamModule.updateReplayGainFromSong(getCurrentPlayer().songObject);
}
}
mstreamModule.setReplayGainPreGainDb = (db) => {
mstreamModule.playerStats.replayGainPreGainDb = db;
if (getCurrentPlayer().songObject) {
mstreamModule.updateReplayGainFromSong(getCurrentPlayer().songObject);
}
}
// Setup Media Session
if ('mediaSession' in navigator) {
navigator.mediaSession.setActionHandler('play', function() { howlPlayerPlay(); });
navigator.mediaSession.setActionHandler('pause', function() { howlPlayerPause(); });
navigator.mediaSession.setActionHandler('stop', function() { howlPlayerPause(); });
// navigator.mediaSession.setActionHandler('seekbackward', function() { /* Code excerpted. */ });
// navigator.mediaSession.setActionHandler('seekforward', function() { /* Code excerpted. */ });
// navigator.mediaSession.setActionHandler('seekto', function() { /* Code excerpted. */ });
navigator.mediaSession.setActionHandler('previoustrack', function() { goToPreviousSong(); });
navigator.mediaSession.setActionHandler('nexttrack', function() { goToNextSong() });
}
// Return an object that is assigned to Module
return mstreamModule;
})();