зеркало из https://github.com/mozilla/pluotsorbet.git
Split audio player logic into its own class
This commit is contained in:
Marco Castelluccio
Родитель
841a9d936d
Коммит
dd7d7b81cc
353
midp/media.js
353
midp/media.js
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@ -59,6 +59,9 @@ var extToFormat = new Map([
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["jpeg", "JPEG"],
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]);
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var supportedAudioFormats = ["MPEG_layer_3", "wav", "amr"];
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var supportedVideoFormats = ["JPEG"];
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Native.create("com/sun/mmedia/DefaultConfiguration.nListContentTypesOpen.(Ljava/lang/String;)I", function(jProtocol) {
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var protocol = util.fromJavaString(jProtocol);
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var types = [];
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@ -126,33 +129,27 @@ Native.create("com/sun/mmedia/DefaultConfiguration.nListProtocolsClose.(I)V", fu
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var PlayerCache = {
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};
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function Player(url) {
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this.url = url;
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// this.mediaFormat will only be updated by PlayerImpl.nGetMediaFormat.
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this.mediaFormat = url ? this.guessFormatFromURL(url) : "UNKNOWN";
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this.contentType = "";
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this.wholeContentSize = -1;
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this.contentSize = 0;
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this.volume = -1;
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this.isMuted = false;
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function AudioPlayer(playerContainer) {
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this.playerContainer = playerContainer;
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/* @type {Int8Array} */
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this.data = null;
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this.isMuted = false;
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/* @type {AudioBuffer} */
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this.audioBuffer = null;
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/* @type {AudioContext} */
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this.audioContext = null;
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this.audioContext = new AudioContext();
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/* @type {AudioBufferSourceNode} */
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this.source = null;
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/*
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* Audio gain node used to control volume.
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* @type {GainNode}
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*/
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this.gainNode = null;
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this.gainNode = this.audioContext.createGain();
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this.volume = Math.round(this.gainNode.gain.value * 100);
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this.gainNode.connect(this.audioContext.destination);
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this.isPlaying = false;
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this.startTime = 0;
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@ -160,6 +157,170 @@ function Player(url) {
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this.duration = 0;
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}
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AudioPlayer.prototype.realize = function() {
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return new Promise(function(resolve, reject) { resolve(true); });
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}
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AudioPlayer.prototype.play = function() {
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var offset = this.stopTime - this.startTime;
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this.source = this.audioContext.createBufferSource();
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this.source.buffer = this.cloneBuffer();
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this.source.connect(this.gainNode || this.audioContext.destination);
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this.source.start(0, offset);
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this.isPlaying = true;
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this.startTime = this.audioContext.currentTime - offset;
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this.source.onended = function() {
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this.close();
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}.bind(this);
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}
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AudioPlayer.prototype.start = function() {
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if (this.playerContainer.contentSize > 0) {
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this.decode(this.playerContainer.data.subarray(0, this.playerContainer.contentSize), function(decoded) {
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// Save a copy of the audio buffer for resumimg or replaying.
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this.audioBuffer = decoded;
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this.duration = decoded.duration;
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this.play();
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}.bind(this));
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return;
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}
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console.warn("Cannot start playing.");
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}
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AudioPlayer.prototype.pause = function() {
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if (!this.isPlaying) {
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return;
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}
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this.isPlaying = false;
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this.source.onended = null;
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this.stopTime = this.audioContext.currentTime;
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this.source.stop();
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this.source.disconnect();
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this.source = null;
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}
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AudioPlayer.prototype.resume = function() {
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if (this.isPlaying) {
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return;
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}
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if (this.stopTime - this.startTime >= this.duration) {
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return;
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}
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this.play();
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}
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AudioPlayer.prototype.close = function() {
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if (this.source) {
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this.source.stop();
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this.source.disconnect();
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this.source = null;
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}
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if (this.gainNode) {
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this.gainNode.disconnect();
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this.gainNode = null;
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}
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this.audioBuffer = null;
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this.startTime = 0;
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this.stopTime = 0;
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this.isPlaying = false;
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}
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AudioPlayer.prototype.getMediaTime = function() {
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if (!this.audioContext) {
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return -1;
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}
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var time = 0;
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if (this.isPlaying) {
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time = this.audioContext.currentTime - this.startTime;
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} else {
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time = Math.min(this.duration, this.stopTime - this.startTime);
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}
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return Math.round(time * 1000);
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}
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AudioPlayer.prototype.cloneBuffer = function() {
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var buffer = this.audioBuffer;
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var cloned = this.audioContext.createBuffer(
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buffer.numberOfChannels,
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buffer.length,
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buffer.sampleRate
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);
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for (var i = 0; i < buffer.numberOfChannels; ++i) {
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var channel = buffer.getChannelData(i);
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cloned.getChannelData(i).set(new Float32Array(channel));
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}
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return cloned;
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};
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AudioPlayer.prototype.decode = function(encoded, callback) {
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this.audioContext.decodeAudioData(encoded.buffer, callback);
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};
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AudioPlayer.prototype.getVolume = function() {
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return this.volume;
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};
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AudioPlayer.prototype.setVolume = function(level) {
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if (!this.gainNode) {
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return -1;
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}
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if (level < 0) {
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level = 0;
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} else if (level > 100) {
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level = 100;
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}
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this.volume = level;
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if (!this.isMuted) {
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this.gainNode.gain.value = level / 100;
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}
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return level;
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}
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AudioPlayer.prototype.getMute = function() {
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return this.isMuted;
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}
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AudioPlayer.prototype.setMute = function(mute) {
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if (this.isMuted === mute) {
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return;
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}
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this.isMuted = mute;
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if (!this.gainNode) {
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return;
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}
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if (mute) {
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this.gainNode.gain.value = 0;
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} else {
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this.gainNode.gain.value = this.volume / 100;
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}
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}
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function Player(url) {
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this.url = url;
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// this.mediaFormat will only be updated by PlayerImpl.nGetMediaFormat.
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this.mediaFormat = url ? this.guessFormatFromURL(url) : "UNKNOWN";
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this.contentType = "";
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this.wholeContentSize = -1;
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this.contentSize = 0;
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this.data = null;
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this.player = null;
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}
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// default buffer size 1 MB
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Player.DEFAULT_BUFFER_SIZE = 1024 * 1024;
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@ -168,59 +329,41 @@ Player.prototype.guessFormatFromURL = function() {
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}
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Player.prototype.realize = function(contentType) {
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if (contentType) {
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switch (contentType) {
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case "audio/x-wav":
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case "audio/amr":
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case "audio/mpeg":
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this.contentType = contentType;
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break;
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default:
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console.warn("Unsupported content type: " + contentType);
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return false;
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return new Promise((function(resolve, reject) {
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if (contentType) {
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switch (contentType) {
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case "audio/x-wav":
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case "audio/amr":
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case "audio/mpeg":
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this.contentType = contentType;
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break;
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default:
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console.warn("Unsupported content type: " + contentType);
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resolve(false);
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return;
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}
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}
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}
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this.audioContext = new AudioContext();
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if (this.isVolumeControlSupported()) {
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this.gainNode = this.audioContext.createGain();
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this.volume = Math.round(this.gainNode.gain.value * 100);
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this.gainNode.connect(this.audioContext.destination);
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}
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return true;
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if (supportedAudioFormats.indexOf(this.mediaFormat) !== -1) {
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this.player = new AudioPlayer(this);
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this.player.realize().then(resolve);
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} else {
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console.warn("Unsupported media format: " + this.mediaFormat);
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resolve(false);
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}
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}).bind(this));
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};
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Player.prototype.close = function() {
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if (this.source) {
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this.source.stop();
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this.source.disconnect();
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this.source = null;
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}
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if (this.gainNode) {
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this.gainNode.disconnect();
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this.gainNode = null;
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}
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this.audioBuffer = null;
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this.data = null;
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this.startTime = 0;
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this.stopTime = 0;
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this.isPlaying = false;
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this.player.close();
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};
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/**
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* @return current time in ms.
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*/
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Player.prototype.getMediaTime = function() {
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if (!this.audioContext) {
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return -1;
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}
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var time = 0;
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if (this.isPlaying) {
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time = this.audioContext.currentTime - this.startTime;
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} else {
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time = Math.min(this.duration, this.stopTime - this.startTime);
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}
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return Math.round(time * 1000);
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return this.player.getMediaTime();
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};
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Player.prototype.getBufferSize = function() {
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@ -307,113 +450,35 @@ Player.prototype.writeBuffer = function(buffer) {
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};
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Player.prototype.play = function() {
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var offset = this.stopTime - this.startTime;
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this.source = this.audioContext.createBufferSource();
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this.source.buffer = this.cloneBuffer();
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this.source.connect(this.gainNode || this.audioContext.destination);
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this.source.start(0, offset);
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this.isPlaying = true;
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this.startTime = this.audioContext.currentTime - offset;
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this.source.onended = function() {
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this.close();
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}.bind(this);
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this.player.play();
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};
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Player.prototype.start = function() {
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return new Promise(function(resolve, reject) {
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if (this.contentSize > 0) {
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this.decode(this.data.subarray(0, this.contentSize), function(decoded) {
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// Save a copy of the audio buffer for resumimg or replaying.
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this.audioBuffer = decoded;
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this.duration = decoded.duration;
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this.play();
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resolve();
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}.bind(this));
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return;
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}
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console.warn("Cannot start playing.");
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resolve();
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}.bind(this));
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this.player.start();
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};
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Player.prototype.pause = function() {
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if (!this.isPlaying) {
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return;
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}
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this.isPlaying = false;
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this.source.onended = null;
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this.stopTime = this.audioContext.currentTime;
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this.source.stop();
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this.source.disconnect();
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this.source = null;
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this.player.pause();
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};
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Player.prototype.resume = function() {
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if (this.isPlaying) {
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return;
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}
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if (this.stopTime - this.startTime >= this.duration) {
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return;
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}
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this.play();
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};
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Player.prototype.cloneBuffer = function() {
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var buffer = this.audioBuffer;
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var cloned = this.audioContext.createBuffer(
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buffer.numberOfChannels,
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buffer.length,
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buffer.sampleRate
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);
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for (var i = 0; i < buffer.numberOfChannels; ++i) {
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var channel = buffer.getChannelData(i);
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cloned.getChannelData(i).set(new Float32Array(channel));
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}
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return cloned;
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};
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Player.prototype.decode = function(encoded, callback) {
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this.audioContext.decodeAudioData(encoded.buffer, callback);
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this.player.resume();
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};
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Player.prototype.getVolume = function() {
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return this.volume;
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return this.player.getVolume();
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};
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Player.prototype.setVolume = function(level) {
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if (!this.gainNode) {
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return -1;
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}
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if (level < 0) {
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level = 0;
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} else if (level > 100) {
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level = 100;
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}
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this.volume = level;
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if (!this.isMuted) {
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this.gainNode.gain.value = level / 100;
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}
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return level;
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this.player.setVolume(level);
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};
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Player.prototype.getMute = function() {
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return this.isMuted;
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return this.player.getMute();
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};
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Player.prototype.setMute = function(mute) {
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if (this.isMuted === mute) {
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return;
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}
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this.isMuted = mute;
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if (!this.gainNode) {
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return;
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}
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if (mute) {
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this.gainNode.gain.value = 0;
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} else {
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this.gainNode.gain.value = this.volume / 100;
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}
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return this.player.setMute(mute);
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};
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Native.create("com/sun/mmedia/PlayerImpl.nInit.(IILjava/lang/String;)I", function(appId, pId, jURI) {
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@ -451,7 +516,7 @@ Native.create("com/sun/mmedia/PlayerImpl.nRealize.(ILjava/lang/String;)Z", funct
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var mime = util.fromJavaString(jMime);
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var player = PlayerCache[handle];
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return player.realize(mime);
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});
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}, true);
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Native.create("com/sun/mmedia/MediaDownload.nGetJavaBufferSize.(I)I", function(handle) {
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