The Tor Browser / file comparison
comparison: content/media/webaudio/test/test_audioParamSetCurveAtTime.html
content/media/webaudio/test/test_audioParamSetCurveAtTime.html
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:a410aede21f0 |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test AudioParam.linearRampToValue</title> | |
| 5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> | |
| 6 <script type="text/javascript" src="webaudio.js"></script> | |
| 7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> | |
| 8 </head> | |
| 9 <body> | |
| 10 <pre id="test"> | |
| 11 <script class="testbody" type="text/javascript"> | |
| 12 | |
| 13 var T0 = 0; | |
| 14 | |
| 15 var gTest = { | |
| 16 length: 2048, | |
| 17 numberOfChannels: 1, | |
| 18 createGraph: function(context) { | |
| 19 var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate); | |
| 20 for (var i = 0; i < 2048; ++i) { | |
| 21 sourceBuffer.getChannelData(0)[i] = 1; | |
| 22 } | |
| 23 | |
| 24 var source = context.createBufferSource(); | |
| 25 source.buffer = sourceBuffer; | |
| 26 | |
| 27 var gain = context.createGain(); | |
| 28 gain.gain.setValueCurveAtTime(this.curve, T0, this.duration); | |
| 29 | |
| 30 source.connect(gain); | |
| 31 | |
| 32 source.start(0); | |
| 33 return gain; | |
| 34 }, | |
| 35 createExpectedBuffers: function(context) { | |
| 36 this.duration = 1024 / context.sampleRate; | |
| 37 this.curve = new Float32Array(100); | |
| 38 for (var i = 0; i < 100; ++i) { | |
| 39 this.curve[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); | |
| 40 } | |
| 41 var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); | |
| 42 for (var i = 0; i < 2048; ++i) { | |
| 43 var t = i / context.sampleRate; | |
| 44 expectedBuffer.getChannelData(0)[i] = this.curve[Math.min(99, Math.floor(100 * Math.min(1.0, (t - T0) / this.duration)))]; | |
| 45 } | |
| 46 return expectedBuffer; | |
| 47 }, | |
| 48 }; | |
| 49 | |
| 50 runTest(); | |
| 51 | |
| 52 </script> | |
| 53 </pre> | |
| 54 </body> | |
| 55 </html> |
