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62 lines
1.9 KiB
HTML
62 lines
1.9 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test ConvolverNode channel count</title>
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<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.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 src="webaudio.js" type="text/javascript"></script>
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<script class="testbody" type="text/javascript">
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const signalLength = 2048;
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const responseLength = 1000;
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const outputLength = 2048; // < signalLength + responseLength to test bug 910171
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var gTest = {
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length: outputLength,
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numberOfChannels: 2,
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createGraph: function(context) {
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var buffer = context.createBuffer(2, signalLength, context.sampleRate);
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for (var i = 0; i < signalLength; ++i) {
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var sample = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
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// When mixed into a single channel, this produces silence
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buffer.getChannelData(0)[i] = sample;
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buffer.getChannelData(1)[i] = -sample;
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}
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var response = context.createBuffer(2, responseLength, context.sampleRate);
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for (var i = 0; i < responseLength; ++i) {
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response.getChannelData(0)[i] = i / responseLength;
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response.getChannelData(1)[i] = 1 - (i / responseLength);
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}
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var convolver = context.createConvolver();
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convolver.buffer = response;
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convolver.channelCount = 1;
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expectException(function() { convolver.channelCount = 3; },
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DOMException.NOT_SUPPORTED_ERR);
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convolver.channelCountMode = "explicit";
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expectException(function() { convolver.channelCountMode = "max"; },
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DOMException.NOT_SUPPORTED_ERR);
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convolver.channelInterpretation = "discrete";
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convolver.channelInterpretation = "speakers";
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var source = context.createBufferSource();
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source.buffer = buffer;
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source.connect(convolver);
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source.start(0);
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return convolver;
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},
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};
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runTest();
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</script>
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</pre>
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</body>
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</html>
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