2013-05-29 23:33:14 +00:00
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test OfflineAudioContext with a channel count less than the specified number</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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SimpleTest.waitForExplicitFinish();
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addLoadEvent(function() {
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var ctx = new OfflineAudioContext(6, 100, 22050);
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var buf = ctx.createBuffer(2, 100, ctx.sampleRate);
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for (var i = 0; i < 2; ++i) {
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for (var j = 0; j < 100; ++j) {
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buf.getChannelData(i)[j] = Math.sin(2 * Math.PI * 200 * j / ctx.sampleRate);
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}
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}
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var emptyBuffer = ctx.createBuffer(1, 100, ctx.sampleRate);
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var src = ctx.createBufferSource();
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src.buffer = buf;
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src.start(0);
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src.connect(ctx.destination);
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ctx.destination.channelCountMode = "max";
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ctx.startRendering();
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ctx.oncomplete = function(e) {
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is(e.renderedBuffer.numberOfChannels, 6, "Correct expected number of buffers");
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2013-12-02 23:13:15 +00:00
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compareChannels(e.renderedBuffer.getChannelData(0), buf.getChannelData(0));
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compareChannels(e.renderedBuffer.getChannelData(1), buf.getChannelData(1));
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2013-05-29 23:33:14 +00:00
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for (var i = 2; i < 6; ++i) {
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2013-12-02 23:13:15 +00:00
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compareChannels(e.renderedBuffer.getChannelData(i), emptyBuffer.getChannelData(0));
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2013-05-29 23:33:14 +00:00
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}
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SimpleTest.finish();
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};
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});
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</script>
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</pre>
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</body>
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</html>
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