From c20b1f29d05b360d2314dc3189cee0a024b276ca Mon Sep 17 00:00:00 2001 From: Jer Noble Date: Thu, 27 Mar 2014 11:39:34 -0700 Subject: [PATCH] Support Audio.preload. --- sound.html | 39 +++++++++++++-------------- sound.js | 77 ++++++++++++++++++++++++++++++++++++------------------ 2 files changed, 72 insertions(+), 44 deletions(-) diff --git a/sound.html b/sound.html index 6f0a1f6..d050524 100644 --- a/sound.html +++ b/sound.html @@ -5,7 +5,7 @@ @@ -45,11 +46,11 @@

- - - - - + + + + +

diff --git a/sound.js b/sound.js index c4f9c0e..df5202e 100644 --- a/sound.js +++ b/sound.js @@ -1,11 +1,12 @@ -function Sound() { +function Sound(src) { - if (Sound.audioContext === undefined) - Sound.audioContext = new webkitAudioContext(); + if (Sound.audioContext === undefined) { + var AudioContext = window.AudioContext || window.webkitAudioContext || window.mozAudioContext; + Sound.audioContext = new AudioContext(); + } - this._src = null; this._networkState = this.NETWORK.EMPTY; - this._preload = true; + this._preload = this.PRELOAD.AUTO; this._buffered = {}; this._readyState = this.READY.NOTHING; this._seeking = false; @@ -15,7 +16,7 @@ function Sound() { this._played = {}; this._seekable = {}; this._ended = false; - this._autoplay = false; + this._autoplay = true; this._loop = false; this._volume = 1; this._muted = false; @@ -26,10 +27,12 @@ function Sound() { this.gainNode = null; this.ajax = null; - this.eventListeners = { }; + this.eventListeners = { }; this.shouldBePlaying = 0; this.startTime = 0; this.nextStartTime = 0; + + this.setSrc(src); } Sound.prototype = { @@ -57,6 +60,12 @@ Sound.prototype = { ENOUGH_DATA: 4, }, + PRELOAD: { + NONE: 0, + METADATA: 1, + AUTO: 2, + }, + load: function() { if (this.ajax) this.ajax.abort(); @@ -74,7 +83,7 @@ Sound.prototype = { this.setPlaybackRate(this.defaultPlaybackRate); this._error = null; - this._autoplay = true; + this.shouldBePlaying = this._autoplay; this.stopInternal(); if (!this._src) { @@ -243,7 +252,7 @@ Sound.prototype = { setSrc: function(src) { this._src = src; - if (this._autoplay && this._src != null) + if (this._autoplay || this._preload != this.PRELOAD.NONE) this.load(); }, @@ -264,21 +273,30 @@ Sound.prototype = { }, getPreload: function() { - if (!this._preload) - return 'none'; - return 'auto'; + 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) { switch (preload) { - case 'none': - this._preload = false; - break; - default: - this._preload = true; - if (!this.buffer) - load(); - break; + default: + case 'none': + this._preload = this.PRELOAD.NONE; + break; + case 'metadata': + this._preload = this.PRELOAD.METADATA; + if (this._networkState === this.NETWORK.EMPTY) + this.load(); + break; + case 'auto': + this._preload = this.PRELOAD.auto; + if (this._networkState === this.NETWORK.EMPTY) + this.load(); + break; } }, @@ -288,7 +306,7 @@ Sound.prototype = { return this.nextStartTime + Sound.audioContext.currentTIme - this.startTime; }, - setCurrentTime: function(time) { + setCurrentTime: function(time) { this.nextStartTime = time; this.dispatchEventAsync(new CustomEvent('timeupdate')); if (!this.node) @@ -327,7 +345,7 @@ Sound.prototype = { }, setVolume: function(volume) { - if (this._volume == volume) + if (this._volume === volume) return; this._volume = volume; @@ -342,7 +360,7 @@ Sound.prototype = { }, setMuted: function(muted) { - if (this._muted == muted) + if (this._muted === muted) return; this._muted = muted; @@ -357,11 +375,11 @@ Sound.prototype = { }, setAutoplay: function(autoplay) { - if (this._autoplay == autoplay) + if (this._autoplay === autoplay) return; this._autoplay = autoplay; - if (this._autoplay && this._src != null) + if (this._autoplay && this._networkState === this.NETWORK.EMPTY) this.load(); }, @@ -469,8 +487,17 @@ Object.defineProperty(Sound.prototype, 'defaultMuted', { set: Sound.prototype.setDefaultMuted, }); +Object.defineProperty(Sound.prototype, 'preload', { + get: Sound.prototype.getPreload, + set: Sound.prototype.setPreload, +}); + document.createElement = function(elementName) { if (elementName === "Audio" || elementName === "audio") return new Sound(); return Document.prototype.createElement.call(this, elementName); +}; + +window.Audio = function(src) { + return new Sound(src); }; \ No newline at end of file -- 2.40.1