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comparison: content/media/webaudio/test/test_gainNode.html
content/media/webaudio/test/test_gainNode.html
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| -1:000000000000 | 0:426fe8f97de4 |
|---|---|
| 1 <!DOCTYPE HTML> | |
| 2 <html> | |
| 3 <head> | |
| 4 <title>Test GainNode</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 gTest = { | |
| 14 length: 2048, | |
| 15 numberOfChannels: 1, | |
| 16 createGraph: function(context) { | |
| 17 var buffer = context.createBuffer(1, 2048, context.sampleRate); | |
| 18 for (var i = 0; i < 2048; ++i) { | |
| 19 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); | |
| 20 } | |
| 21 | |
| 22 var source = context.createBufferSource(); | |
| 23 | |
| 24 var gain = context.createGain(); | |
| 25 | |
| 26 source.buffer = buffer; | |
| 27 | |
| 28 source.connect(gain); | |
| 29 | |
| 30 ok(gain.gain, "The audioparam member must exist"); | |
| 31 is(gain.gain.value, 1.0, "Correct initial value"); | |
| 32 is(gain.gain.defaultValue, 1.0, "Correct default value"); | |
| 33 gain.gain.value = 0.5; | |
| 34 is(gain.gain.value, 0.5, "Correct initial value"); | |
| 35 is(gain.gain.defaultValue, 1.0, "Correct default value"); | |
| 36 is(gain.channelCount, 2, "gain node has 2 input channels by default"); | |
| 37 is(gain.channelCountMode, "max", "Correct channelCountMode for the gain node"); | |
| 38 is(gain.channelInterpretation, "speakers", "Correct channelCountInterpretation for the gain node"); | |
| 39 | |
| 40 source.start(0); | |
| 41 return gain; | |
| 42 }, | |
| 43 createExpectedBuffers: function(context) { | |
| 44 var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); | |
| 45 for (var i = 0; i < 2048; ++i) { | |
| 46 expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate) / 2; | |
| 47 } | |
| 48 return expectedBuffer; | |
| 49 }, | |
| 50 }; | |
| 51 | |
| 52 runTest(); | |
| 53 | |
| 54 </script> | |
| 55 </pre> | |
| 56 </body> | |
| 57 </html> |
