-/* Copyright (c) 2014 Jer Noble
+/* Copyright (c) 2014-2016 Jer Noble
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* THE SOFTWARE.
*/
-function Sound(src) {
-
- if (Sound.audioContext === undefined) {
- var AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext;
- Sound.audioContext = new AudioContext();
- }
-
- this._networkState = this.NETWORK.EMPTY;
- this._preload = this.PRELOAD.AUTO;
- this._buffered = {};
- this._readyState = this.READY.NOTHING;
- this._seeking = false;
- this._paused = true;
- this._defaultPlaybackRate = 1;
- this._playbackRate = 1;
- this._played = {};
- this._seekable = {};
- this._ended = false;
- this._autoplay = true;
- this._loop = false;
- this._volume = 1;
- this._muted = false;
- this._defaultMuted = false;
-
- this.selectResourceTimer = null;
- this.fetchResourceTimer = null;
- this.timeUpdateTimer = null;
-
- this.buffer = null;
- this.node = null;
- this.gainNode = null;
-
- this.ajax = null;
- this.eventListeners = { };
- this.startTime = 0;
- this.nextStartTime = 0;
-
- this.autoplaying = false;
- this.delayingTheLoadEvent = false;
- this.sentLoadedData = false;
-
- this.setSrc(src);
-}
+class Sound {
+ constructor(src) {
+ if (Sound.audioContext === undefined) {
+ var AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext;
+ Sound.audioContext = new AudioContext();
+ }
+
+ this._networkState = this.NETWORK.EMPTY;
+ this._preload = this.PRELOAD.AUTO;
+ this._buffered = {};
+ this._readyState = this.READY.NOTHING;
+ this._seeking = false;
+ this._paused = true;
+ this._defaultPlaybackRate = 1;
+ this._playbackRate = 1;
+ this._played = {};
+ this._seekable = {};
+ this._autoplay = true;
+ this._loop = false;
+ this._volume = 1;
+ this._muted = false;
+ this._defaultMuted = false;
+
+ this.selectResourceTimer = null;
+ this.fetchResourceTimer = null;
+ this.timeUpdateTimer = null;
+
+ this.buffer = null;
+ this.node = null;
+ this.gainNode = null;
+
+ this.ajax = null;
+ this.eventListeners = { };
+ this.startTime = 0;
+ this.nextStartTime = 0;
-Sound.prototype = {
- /* Constants */
- ERR: {
- NONE: 0,
- ABORTED: 1,
- NETWORK: 2,
- DECODE: 3,
- SRC_NOT_SUPPORTED: 4,
- },
-
- NETWORK: {
- EMPTY: 0,
- IDLE: 1,
- LOADING: 2,
- NO_SOURCE: 3,
- },
-
- READY: {
- NOTHING: 0,
- METADATA: 1,
- CURRENT_DATA: 2,
- FUTURE_DATA: 3,
- ENOUGH_DATA: 4,
- },
-
- PRELOAD: {
- NONE: 0,
- METADATA: 1,
- AUTO: 2,
- },
-
- load: function() {
+ this.autoplaying = false;
+ this.delayingTheLoadEvent = false;
+ this.sentLoadedData = false;
+
+ this.src = src;
+ }
+
+ load() {
if (this.networkState === this.NETWORK.LOADING || this.networkState === this.NETWORK.IDLE)
this.dispatchEventAsync(new CustomEvent('abort'));
}
if (this._readyState != this.READY.NOTHING)
- this.setReadyState(this.READY.NOTHING);
+ this.readyState = this.READY.NOTHING;
if (!this._paused)
this.pause();
if (!this._seeking)
this._seeking = false;
- this.setCurrentTime(0);
+ this.currentTime = 0;
this.buffer = null;
}
- this.setPlaybackRate(this.defaultPlaybackRate);
+ this.playbackRate = this.defaultPlaybackRate;
this._error = null;
this.autoplaying = true;
this.stopInternal();
this.sentLoadedData = false;
this.selectResource();
- },
+ }
- selectResource: function() {
- this.setNetworkState(this.NETWORK.NO_SOURCE);
+ selectResource() {
+ this.networkState = this.NETWORK.NO_SOURCE;
this.delayingTheLoadEvent = true;
this.selectResourceTimer = setTimeout(this.selectResourceAsync.bind(this), 0);
- },
+ }
- selectResourceAsync: function() {
+ selectResourceAsync() {
this.selectResourceTimer = null;
if (!this._src) {
- this.setNetworkState(this.NETWORK.EMPTY);
+ this.networkState = this.NETWORK.EMPTY;
return;
}
- this.setNetworkState(this.NETWORK.LOADING);
+ this.networkState = this.NETWORK.LOADING;
this.dispatchEventAsync(new CustomEvent('loadstart'));
this.fetchResourceTimer = setTimeout(this.fetchResource(), 0);
- },
+ }
- fetchResource: function() {
+ fetchResource() {
this.fetchResourceTimer = null;
if (this._preload === this.PRELOAD.NONE) {
- this.setNetworkState(this.NETWORK.IDLE);
+ this.networkState = this.NETWORK.IDLE;
this.dispatchEventAsync(new CustomEvent('suspend'));
this.delayingTheLoadEvent = false;
return;
this.ajax.onload = this.resourceFetchingSucceeded.bind(this);
this.ajax.onerror = this.resourceFetchingFailed.bind(this);
this.ajax.send();
- },
+ }
- resourceFetchingProgressed: function() {
+ resourceFetchingProgressed() {
this.dispatchEventAsync(new CustomEvent('progress'));
- },
+ }
- resourceFetchingSucceeded: function() {
+ resourceFetchingSucceeded() {
if (!this.ajax.response)
return;
- this.setNetworkState(this.NETWORK.IDLE);
+ this.networkState = this.NETWORK.IDLE;
this.dispatchEventAsync(new CustomEvent('suspend'));
- this.setReadyState(this.READY.METADATA);
+ this.readyState = this.READY.METADATA;
try {
Sound.audioContext.decodeAudioData(
} catch(exception) {
console.log(exception);
}
- },
+ }
- resourceFetchingFailed: function() {
+ resourceFetchingFailed() {
this.error = { code: MediaError.MEDIA_ERR_SRC_NOT_SUPPORTED };
- this.setNetworkState(this.NETWORK.NO_SOURCE);
+ this.networkState = this.NETWORK.NO_SOURCE;
this.dispatchEventAsync(new CustomEvent('error'));
this.delayingTheLoadEvent = false;
- },
+ }
- resourceDecodingSucceeded: function(buffer) {
+ resourceDecodingSucceeded(buffer) {
this.buffer = buffer;
- this.setCurrentTime(0);
+ this.currentTime = 0;
this.dispatchEventAsync(new CustomEvent('durationchange'));
- this.setReadyState(this.READY.ENOUGH_DATA);
+ this.readyState = this.READY.ENOUGH_DATA;
if (this.autoplaying && this._paused && this._autoplay)
this.play();
this.dispatchEventAsync(new CustomEvent('canplaythrough'));
- },
+ }
- resourceDecodingFailed: function(error) {
+ resourceDecodingFailed(error) {
this._error = { code: HTMLMediaElement.MEDIA_ERR_DECODE };
this.dispatchEventAsync(new CustomEvent('error'));
if (this._readyState === this.READY.NOTHING) {
- this.setNetworkState(this.NETWORK.EMPTY);
+ this.networkState = this.NETWORK.EMPTY;
this.dispatchEventAsync('emptied');
} else
- this.setNetworkState(this.NETWORK.IDLE);
- },
+ this.networkState = this.NETWORK.IDLE;
+ }
- play: function() {
+ play() {
if (this._networkState === this.NETWORK.EMPTY)
this.loadResource();
if (this.node)
return;
- if (this._ended) {
+ if (this.endedPlayback()) {
if (this._playbackRate > 0)
- this.setCurrentTime(0);
+ this.currentTime = 0;
else
- this.setCurrentTime(this.duration)
+ this.currentTime = this.duration
}
- if (this._paused || this._ended) {
+ if (this._paused || this.endedPlayback()) {
this._paused = false;
- this._ended = false;
this.dispatchEventAsync(new CustomEvent('play'));
if (this._readyState < this.READY.FUTURE_DATA)
this._autoplay = false;
this.playInternal();
- },
+ }
- playInternal: function() {
+ playInternal() {
this.gainNode = Sound.audioContext.createGainNode();
this.gainNode.gain.value = this._muted ? 0 : this._volume;
this.gainNode.connect(Sound.audioContext.destination);
this.node.buffer = this.buffer;
this.node.playbackRate.value = this._playbackRate;
this.node.onended = this.onended.bind(this);
- var remainingDuration = this._playbackRate < 0 ? this.nextStartTime : this.buffer.duration - this.nextStartTime;
- this.node.start(0, this.nextStartTime, remainingDuration);
+ if (this._playbackRate < 0)
+ this.node.start(0, 0, this.nextStartTime);
+ else
+ this.node.start(0, this.nextStartTime, this.buffer.duration - this.nextStartTime);
this.timeUpdateTimer = setInterval(this.sendTimeUpdate.bind(this), 250);
- },
+ }
- sendTimeUpdate: function() {
+ sendTimeUpdate() {
this.dispatchEventAsync(new CustomEvent('timeupdate'));
- },
+ }
- pause: function() {
+ pause() {
if (this._networkState === this.NETWORK.EMPTY)
this.loadResource();
this.nextStartTime = this._playbackRate * (Sound.audioContext.currentTime - this.startTime);
this.stopInternal();
- },
+ }
- stopInternal: function() {
+ stopInternal() {
if (this.node) {
this.node.disconnect();
delete this.node;
}
clearInterval(this.timeUpdateTimer);
- },
+ }
- onended: function() {
+ onended() {
if (this._loop) {
+ this.nextStartTime = this._playbackRate < 0 ? this.duration : 0;
this.stopInternal();
this.playInternal();
return;
}
- this._ended = true;
+ this.nextStartTime = this._playbackRate < 0 ? 0 : this.duration;
this.stopInternal();
this.dispatchEventAsync(new CustomEvent('ended'));
- },
+ }
- addEventListener: function(eventName, handler) {
+ endedPlayback() {
+ if (this._readyState < this.READY.METADATA)
+ return false;
+
+ if (this.currentTime >= this.duration && this._playbackRate >= 0 && !this._loop)
+ return true;
+
+ if (this.currentTime <= 0 && this._playbackRate <= 0)
+ return true;
+ }
+
+ get ended() {
+ return this.endedPlayback() && this._playbackRate >= 0;
+ }
+
+ addEventListener(eventName, handler) {
if (!this.eventListeners[eventName])
this.eventListeners[eventName] = [];
return;
listeners.push(handler);
- },
+ }
- removeEventListener: function(eventName, handler) {
+ removeEventListener(eventName, handler) {
if (!this.eventListeners[eventName])
return;
return;
listeners.splice(index, 1);
- },
+ }
- dispatchEventAsync: function(event) {
+ dispatchEventAsync(event) {
window.setTimeout(this.dispatchEvent.bind(this, event), 0);
- },
+ }
- dispatchEvent: function(event) {
+ dispatchEvent(event) {
if (!this.eventListeners[event.type])
return;
- event.target = this;
var listeners = this.eventListeners[event.type];
listeners.forEach(function(listener) {
listener.call(this, event);
});
- },
+ }
- getSrc: function() {
+ get src() {
return this._src;
- },
+ }
- setSrc: function(src) {
+ set src(src) {
this._src = src;
if (this._src)
this.load();
- },
+ }
- getCurrentSrc: function() {
+ get currentSrc() {
return this._src;
- },
+ }
- getNetworkState: function() {
+ get setworkState() {
return this._networkState;
- },
+ }
- setNetworkState: function(value) {
+ set networkState(value) {
this._networkState = value;
- },
+ }
- getReadyState: function() {
+ get readyState() {
return this._readyState;
- },
+ }
- setReadyState: function(value) {
+ set readyState(value) {
var oldState = this._readyState;
var newState = this._readyState = value;
}
if (oldState >= this.READY.FUTURE_DATA && newState <= this.READY.CURRENT_DATA) {
- if (this.autoplaying && this._paused && this._autoplay && !this._ended && !this._error) {
+ if (this.autoplaying && this._paused && this._autoplay && !this.endedPlayback() && !this._error) {
this.dispatchEventAsync('timeupdate');
this.dispatchEventAsync('waiting');
this.nextStartTime = this._playbackRate * (Sound.audioContext.currentTime - this.startTime);
if (this.autoplaying && this._paused && this._autoplay)
this.play();
}
- },
+ }
- getPreload: function() {
+ get preload() {
switch (this._preload) {
case this.PRELOAD.NONE: return 'none';
case this.PRELOAD.METADATA: return 'metadata';
case this.PRELOAD.AUTO: return 'auto';
default: return '';
}
- },
+ }
- setPreload: function(preload) {
+ set preload(preload) {
switch (preload) {
default:
case 'none':
this.load();
break;
}
- },
+ }
- getCurrentTime: function() {
+ get currentTime() {
if (!this.node)
return this.nextStartTime;
return this.nextStartTime + this._playbackRate * (Sound.audioContext.currentTime - this.startTime);
- },
+ }
- setCurrentTime: function(time) {
+ set currentTime(time) {
this.nextStartTime = parseFloat(time);
this.dispatchEventAsync(new CustomEvent('timeupdate'));
if (!this.node)
this.stopInternal();
this.playInternal();
- },
+ }
- getDuration: function() {
+ get duration() {
if (!this.buffer)
return NaN;
return this.buffer.duration;
- },
+ }
- getPaused: function() {
+ get paused() {
return this._paused;
- },
+ }
- getPlaybackRate: function() {
+ get playbackRate() {
return this._playbackRate;
- },
+ }
- setPlaybackRate: function(rate) {
+ set playbackRate(rate) {
var oldPlaybackRate = this._playbackRate;
this._playbackRate = parseFloat(rate);
this.dispatchEventAsync(new CustomEvent('ratechange'));
if (this.node) {
- this.nextStartTime = oldPlaybackRate * (Sound.audioContext.currentTime - this.startTime);
+ var currentTime = Sound.audioContext.currentTime
+ this.nextStartTime += oldPlaybackRate * (currentTime - this.startTime);
+ this.startTime = currentTime;
this.node.playbackRate.value = this._playbackRate;
+
+ if ((oldPlaybackRate <= 0) != (this._playbackRate <= 0)) {
+ this.stopInternal();
+ this.playInternal();
+ }
}
- },
+ }
- getDefaultPlaybackRate: function() {
+ get defaultPlaybackRate() {
return this._defaultPlaybackRate;
- },
+ }
- setDefaultPlaybackRate: function(rate) {
+ set defaultPlaybackRate(rate) {
this._defaultPlaybackRate = parseFloat(rate);
this.dispatchEventAsync(new CustomEvent('ratechange'));
- },
+ }
- getVolume: function() {
+ get volume() {
return this._volume;
- },
+ }
- setVolume: function(volume) {
+ set volume(volume) {
if (this._volume === volume)
return;
if (this.gainNode)
this.gainNode.gain.value = this._muted ? 0 : this._volume;
- },
+ }
- getMuted: function() {
+ get muted() {
return this._muted;
- },
+ }
- setMuted: function(muted) {
+ set muted(muted) {
if (this._muted === muted)
return;
if (this.gainNode)
this.gainNode.gain.value = this._muted ? 0 : this._volume;
- },
+ }
- getAutoplay: function() {
+ get autoplay() {
return this._autoplay;
- },
+ }
- setAutoplay: function(autoplay) {
+ set autoplay(autoplay) {
if (this._autoplay === autoplay)
return;
this._autoplay = autoplay;
if (this._autoplay && this._networkState === this.NETWORK.EMPTY)
this.load();
- },
+ }
- getLoop: function() {
+ get loop() {
return this._loop;
- },
+ }
- setLoop: function(loop) {
+ set loop(loop) {
this._loop = loop;
- },
+ }
+}
+
+Sound.prototype.ERR = {
+ NONE: 0,
+ ABORTED: 1,
+ NETWORK: 2,
+ DECODE: 3,
+ SRC_NOT_SUPPORTED: 4,
};
-Object.defineProperty(Sound.prototype, 'src', {
- get: Sound.prototype.getSrc,
- set: Sound.prototype.setSrc,
-});
-
-Object.defineProperty(Sound.prototype, 'currentSrc', {
- get: Sound.prototype.getCurrentSrc,
-});
-
-Object.defineProperty(Sound.prototype, 'networkState', {
- get: Sound.prototype.getNetworkState,
-});
-
-Object.defineProperty(Sound.prototype, 'preload', {
- get: Sound.prototype.getPreload,
- set: Sound.prototype.setPreload,
-});
-
-Object.defineProperty(Sound.prototype, 'buffered', {
- get: Sound.prototype.getBuffered,
-});
-
-Object.defineProperty(Sound.prototype, 'readyState', {
- get: Sound.prototype.getReadyState,
-});
-
-Object.defineProperty(Sound.prototype, 'seeking', {
- get: Sound.prototype.getSeeking,
-});
-
-Object.defineProperty(Sound.prototype, 'currentTime', {
- get: Sound.prototype.getCurrentTime,
- set: Sound.prototype.setCurrentTime,
-});
-
-Object.defineProperty(Sound.prototype, 'duration', {
- get: Sound.prototype.getDuration,
-});
-
-Object.defineProperty(Sound.prototype, 'paused', {
- get: Sound.prototype.getPaused,
-});
-
-Object.defineProperty(Sound.prototype, 'defaultPlaybackRate', {
- get: Sound.prototype.getDefaultPlaybackRate,
- set: Sound.prototype.setDefaultPlaybackRate,
-});
-
-Object.defineProperty(Sound.prototype, 'playbackRate', {
- get: Sound.prototype.getPlaybackRate,
- set: Sound.prototype.setPlaybackRate,
-});
-
-Object.defineProperty(Sound.prototype, 'played', {
- get: Sound.prototype.getPlayed,
-});
-
-Object.defineProperty(Sound.prototype, 'seekable', {
- get: Sound.prototype.getSeekable,
-});
-
-Object.defineProperty(Sound.prototype, 'ended', {
- get: Sound.prototype.getEnded,
-});
-
-Object.defineProperty(Sound.prototype, 'autoplay', {
- get: Sound.prototype.getAutoplay,
- set: Sound.prototype.setAutoplay,
-});
-
-Object.defineProperty(Sound.prototype, 'loop', {
- get: Sound.prototype.getLoop,
- set: Sound.prototype.setLoop,
-});
-
-Object.defineProperty(Sound.prototype, 'controls', {
- get: Sound.prototype.getControls,
- set: Sound.prototype.setControls,
-});
-
-Object.defineProperty(Sound.prototype, 'volume', {
- get: Sound.prototype.getVolume,
- set: Sound.prototype.setVolume,
-});
-
-Object.defineProperty(Sound.prototype, 'muted', {
- get: Sound.prototype.getMuted,
- set: Sound.prototype.setMuted,
-});
-
-Object.defineProperty(Sound.prototype, 'defaultMuted', {
- get: Sound.prototype.getDefaultMuted,
- set: Sound.prototype.setDefaultMuted,
-});
-
-Object.defineProperty(Sound.prototype, 'preload', {
- get: Sound.prototype.getPreload,
- set: Sound.prototype.setPreload,
-});
+Sound.prototype.NETWORK = {
+ EMPTY: 0,
+ IDLE: 1,
+ LOADING: 2,
+ NO_SOURCE: 3,
+};
+
+Sound.prototype.READY = {
+ NOTHING: 0,
+ METADATA: 1,
+ CURRENT_DATA: 2,
+ FUTURE_DATA: 3,
+ ENOUGH_DATA: 4,
+};
+
+Sound.prototype.PRELOAD = {
+ NONE: 0,
+ METADATA: 1,
+ AUTO: 2,
+};
document.createElement = function(elementName) {
if (elementName === "Audio" || elementName === "audio")
git://105106.c2e0p.group / sound.git / blobdiff