kopia lustrzana https://github.com/backface/turtlestitch
Fixes issue #310 - play note block fails on Firefox due to use of deprecated
WebAudio names. The fix uses the correct names and monkey-patches browsers that use the old ones.pull/3/merge
rodzic
9d63d129a6
commit
b4eb1d1864
15
objects.js
15
objects.js
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@ -5647,17 +5647,20 @@ Note.prototype.setupContext = function () {
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if (this.audioContext) { return; }
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var AudioContext = (function () {
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// cross browser some day?
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return window.AudioContext ||
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var ctx = window.AudioContext ||
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window.mozAudioContext ||
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window.msAudioContext ||
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window.oAudioContext ||
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window.webkitAudioContext;
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if (!ctx.prototype.hasOwnProperty('createGain'))
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ctx.prototype.createGain = ctx.prototype.createGainNode;
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return ctx;
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}());
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if (!AudioContext) {
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throw new Error('Web Audio API is not supported\nin this browser');
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}
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Note.prototype.audioContext = new AudioContext();
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Note.prototype.gainNode = Note.prototype.audioContext.createGainNode();
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Note.prototype.gainNode = Note.prototype.audioContext.createGain();
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Note.prototype.gainNode.gain.value = 0.25; // reduce volume by 1/4
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};
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@ -5665,17 +5668,21 @@ Note.prototype.setupContext = function () {
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Note.prototype.play = function () {
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this.oscillator = this.audioContext.createOscillator();
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if (!this.oscillator.start)
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this.oscillator.start = this.oscillator.noteOn;
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if (!this.oscillator.stop)
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this.oscillator.stop = this.oscillator.noteOff;
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this.oscillator.type = 0;
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this.oscillator.frequency.value =
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Math.pow(2, (this.pitch - 69) / 12) * 440;
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this.oscillator.connect(this.gainNode);
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this.gainNode.connect(this.audioContext.destination);
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this.oscillator.noteOn(0); // deprecated, renamed to start()
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this.oscillator.start(0);
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};
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Note.prototype.stop = function () {
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if (this.oscillator) {
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this.oscillator.noteOff(0); // deprecated, renamed to stop()
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this.oscillator.stop(0);
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this.oscillator = null;
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}
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};
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