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/**
* @license -------------------------------------------------------------------
* module: WebAudioShim - Fix naming issues for WebAudioAPI supports
* src: https://github.com/Dinahmoe/webaudioshim
* author: Dinahmoe AB
* -------------------------------------------------------------------
* Copyright (c) 2012 DinahMoe AB
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
window.AudioContext = window.AudioContext || window.webkitAudioContext || null;
window.OfflineAudioContext = window.OfflineAudioContext || window.webkitOfflineAudioContext || null;
(function (Context) {
var isFunction = function (f) {
return Object.prototype.toString.call(f) === "[object Function]" ||
Object.prototype.toString.call(f) === "[object AudioContextConstructor]";
};
var contextMethods = [
["createGainNode", "createGain"],
["createDelayNode", "createDelay"],
["createJavaScriptNode", "createScriptProcessor"]
];
///
var proto;
var instance;
var sourceProto;
///
if (!isFunction(Context)) {
return;
}
instance = new Context();
if (!instance.destination || !instance.sampleRate) {
return;
}
proto = Context.prototype;
sourceProto = Object.getPrototypeOf(instance.createBufferSource());
if (!isFunction(sourceProto.start)) {
if (isFunction(sourceProto.noteOn)) {
sourceProto.start = function (when, offset, duration) {
switch (arguments.length) {
case 0:
throw new Error("Not enough arguments.");
case 1:
this.noteOn(when);
break;
case 2:
if (this.buffer) {
this.noteGrainOn(when, offset, this.buffer.duration - offset);
} else {
throw new Error("Missing AudioBuffer");
}
break;
case 3:
this.noteGrainOn(when, offset, duration);
}
};
}
}
if (!isFunction(sourceProto.noteOn)) {
sourceProto.noteOn = sourceProto.start;
}
if (!isFunction(sourceProto.noteGrainOn)) {
sourceProto.noteGrainOn = sourceProto.start;
}
if (!isFunction(sourceProto.stop)) {
sourceProto.stop = sourceProto.noteOff;
}
if (!isFunction(sourceProto.noteOff)) {
sourceProto.noteOff = sourceProto.stop;
}
contextMethods.forEach(function (names) {
var name1;
var name2;
while (names.length) {
name1 = names.pop();
if (isFunction(this[name1])) {
this[names.pop()] = this[name1];
} else {
name2 = names.pop();
this[name1] = this[name2];
}
}
}, proto);
})(window.AudioContext);
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