sound test

From: Jer Noble Date: Thu, 20 Feb 2014 19:13:28 +0000 (-0800) Subject: Initial commit. X-Git-Url: http://id.pley.net/sound.git/commitdiff_plain/1c34429baed75a88bb01e077086cd59201cb2a9a Initial commit. --- 1c34429baed75a88bb01e077086cd59201cb2a9a diff --git a/Coin.wav b/Coin.wav new file mode 100755 index 0000000..fef4191 Binary files /dev/null and b/Coin.wav differ diff --git a/Overworld.mp3 b/Overworld.mp3 new file mode 100755 index 0000000..8154f1d Binary files /dev/null and b/Overworld.mp3 differ diff --git a/sound.html b/sound.html new file mode 100644 index 0000000..34889fa --- /dev/null +++ b/sound.html @@ -0,0 +1,18 @@ + + + + sound test + + + + + + + + + \ No newline at end of file diff --git a/sound.js b/sound.js new file mode 100644 index 0000000..f823be3 --- /dev/null +++ b/sound.js @@ -0,0 +1,430 @@ +function Sound() { + + if (Sound.audioContext === undefined) + Sound.audioContext = new webkitAudioContext(); + + this._src = null; + this._networkState = this.NETWORK.EMPTY; + this._preload = true; + 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 = false; + this._loop = false; + this._volume = 1; + this._muted = false; + this._defaultMuted = false; + + this.buffer = null; + this.node = null; + this.gainNode = null; + + this.ajax = null; + this.eventListeners = { }; + this.shouldBePlaying = 0; + this.startTime = 0; + this.nextStartTime = 0; + this.load(); +} + +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, + }, + + load: function() { + if (this.ajax) + this.ajax.abort(); + + if (this.networkState === this.NETWORK.LOADING || this.networkState === this.NETWORK.IDLE) { + this.dispatchEventAsync(new CustomEvent('emptied')); + this.setReadyState(this.READY.NOTHING); + if (!this._paused) + this.pause(); + if (!this._seeking) + this._seeking = false; + this.setCurrentTime(0); + this.buffer = null; + } + + this.setPlaybackRate(this.defaultPlaybackRate); + this._error = null; + this._autoplay = true; + this.stopInternal(); + + if (!this._src) { + this._networkState = this.NETWORK.EMPTY; + return; + } + + this._networkState = this.NETWORK.LOADING; + this.dispatchEventAsync(new CustomEvent('loadstart')); + + this.ajax = new XMLHttpRequest(); + this.ajax.open("GET", this._src, true); + this.ajax.responseType = "arraybuffer"; + this.ajax.onload = function() { + if (!this.ajax.response) + return; + + this.setReadyState(this.READY.FUTURE_DATA); + + try { + Sound.audioContext.decodeAudioData( + this.ajax.response, + function(buffer) { + this.buffer = buffer; + if (this.shouldBePlaying) + this.play(); + }.bind(this), + function(error) { + console.log("Error in creating buffer for sound '" + this._src + "': " + error); + }.bind(this) + ); + } catch(exception) { + console.log(exception); + } + }.bind(this); + this.ajax.onprogress = function() { + this.dispatchEventAsync(new CustomEvent('progress')); + }.bind(this); + this.ajax.send(); + }, + + play: function() { + if (!this.buffer) { + this.shouldBePlaying = true; + return; + } + + if (this.node) + return; + + if (this._ended && this._playbackRate > 0) + this.setCurrentTime(0); + + if (this._paused) { + this._paused = false; + this.dispatchEventAsync(new CustomEvent('play')); + + if (this._readyState < this.READY.FUTURE_DATA) + this.dispatchEventAsync(new CustomEvent('waiting')); + else + this.dispatchEventAsync(new CustomEvent('playing')); + } + + this._autoplay = false; + + this.playInternal(); + }, + + playInternal: function() { + this.gainNode = Sound.audioContext.createGainNode(); + this.gainNode.gain.value = this._volume; + this.gainNode.connect(Sound.audioContext.destination); + + this.node = Sound.audioContext.createBufferSource(); + this.node.connect(this.gainNode); + this.node.buffer = this.buffer; + this.node.playbackRate.value = this._playbackRate; + this.node.start(0, this.nextStartTime); + this.node.onended = this.onended.bind(this); + }, + + + pause: function() { + this._autoplay = false; + + if (!this._paused) { + this._paused = false; + this.dispatchEventAsync(new CustomEvent('timeupdate')); + this.dispatchEventAsync(new CustomEvent('pause')); + } + + if (!this.buffer || !this.node) + return; + + this.nextStartTime = Sound.audioContext.currentTime - this.startTime; + this.stopInternal(); + }, + + stopInternal: function() { + if (this.node) { + this.node.disconnect(); + delete this.node; + } + if (this.gainNode) { + this.gainNode.disconnect(); + delete this.gainNode; + } + }, + + onended: function() { + this._ended = true; + this.nextStartTime = 0; + this.stopInternal(); + this.dispatchEventAsync(new CustomEvent('ended')); + }, + + addEventListener: function(eventName, handler) { + if (!this.eventListeners[eventName]) + this.eventListeners[eventName] = []; + + var listeners = this.eventListeners[eventName]; + if (listeners.indexOf(handler) !== -1) + return; + + listeners.push(handler); + }, + + removeEventListener: function(eventName, handler) { + if (!this.eventListeners[eventName]) + return; + + var listeners = this.eventListeners[eventName]; + var index = listeners.indexOf(handler); + if (index === -1) + return; + + listeners.splice(index, 1); + }, + + dispatchEventAsync: function(event) { + window.setTimeout(this.dispatchEvent.bind(this, event), 0); + }, + + dispatchEvent: function(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() { + return this._src; + }, + + setSrc: function(src) { + this._src = src; + this.load(); + }, + + getCurrentSrc: function() { + return this._src; + }, + + getNetworkState: function() { + return this._networkState; + }, + + getReadyState: function() { + return this._readyState; + }, + + setReadyState: function(value) { + this._readyState = value; + }, + + getPreload: function() { + if (!this._preload) + return 'none'; + return 'auto'; + }, + + setPreload: function(preload) { + switch (preload) { + case 'none': + this._preload = false; + break; + default: + this._preload = true; + if (!this.buffer) + load(); + break; + } + }, + + getCurrentTime: function() { + if (!this.node) + return this.nextStartTime; + return this.nextStartTime + Sound.audioContext.currentTIme - this.startTime; + }, + + setCurrentTime: function(time) { + this.nextStartTime = time; + this.dispatchEventAsync(new CustomEvent('timeupdate')); + if (!this.node) + return; + + this.stopInternal(); + this.playInternal(); + }, + + getDuration: function() { + if (!this.buffer) + return NaN; + + return this.buffer.duration; + }, + + getPaused: function() { + return this._paused; + }, + + getPlaybackRate: function() { + return this._playbackRate; + }, + + setPlaybackRate: function(rate) { + this._playbackRate = rate; + + if (this.buffer) { + this.stopInternal(); + this.playInternal(); + } + }, + + getVolume: function() { + return this._volume; + }, + + setVolume: function(volume) { + this._volume = volume; + if (!this.gainNode) + return; + + this.gainNode.gain.value = volume; + this.dispatchEventAsync(new CustomEvent('volumechange')); + }, +}; + +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, +}); + +document.createElement = function(elementName) { + if (elementName === "Audio" || elementName === "audio") + return new Sound(); + return Document.prototype.createElement.call(this, elementName); +}; \ No newline at end of file