2013-05-01 20:13:43 -07:00
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test connecting an AudioNode to an AudioParam</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="text/javascript" src="webaudio.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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</head>
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<body>
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<pre id="test">
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<script class="testbody" type="text/javascript">
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2013-05-09 05:45:35 -07:00
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var gTest = {
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length: 2048,
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createGraph: function(context) {
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var sourceBuffer = context.createBuffer(2, 2048, context.sampleRate);
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for (var i = 0; i < 2048; ++i) {
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sourceBuffer.getChannelData(0)[i] = 1;
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sourceBuffer.getChannelData(1)[i] = -1;
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2013-05-01 20:13:43 -07:00
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}
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2013-05-09 05:45:35 -07:00
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var destination = context.destination;
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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var paramSource = context.createBufferSource();
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paramSource.buffer = this.buffer;
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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var source = context.createBufferSource();
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source.buffer = sourceBuffer;
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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var gain = context.createGain();
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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paramSource.connect(gain.gain);
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source.connect(gain);
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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paramSource.start(0);
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source.start(0);
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return gain;
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},
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createExpectedBuffers: function(context) {
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this.buffer = context.createBuffer(2, 2048, context.sampleRate);
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for (var i = 0; i < 2048; ++i) {
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for (var j = 0; j < 2; ++j) {
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this.buffer.getChannelData(j)[i] = Math.sin(440 * 2 * (j + 1) * Math.PI * i / context.sampleRate);
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}
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}
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var expectedBuffer = context.createBuffer(2, 2048, context.sampleRate);
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for (var i = 0; i < 2048; ++i) {
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expectedBuffer.getChannelData(0)[i] = 1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2;
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expectedBuffer.getChannelData(1)[i] = -(1 + (this.buffer.getChannelData(0)[i] + this.buffer.getChannelData(1)[i]) / 2);
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}
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return expectedBuffer;
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},
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};
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2013-05-01 20:13:43 -07:00
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2013-05-09 05:45:35 -07:00
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runTest();
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2013-05-01 20:13:43 -07:00
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</script>
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</pre>
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</body>
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</html>
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