зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.8 KiB
HTML
58 строки
1.8 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test ChannelMergerNode</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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var gTest = {
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length: 2048,
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numberOfChannels: 8,
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createGraph: function(context) {
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var buffers = [];
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for (var j = 0; j < 4; ++j) {
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var buffer = context.createBuffer(2, 2048, context.sampleRate);
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for (var i = 0; i < 2048; ++i) {
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buffer.getChannelData(0)[i] = Math.sin(440 * 2 * (j + 1) * Math.PI * i / context.sampleRate);
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// Second channel is silent
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}
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buffers.push(buffer);
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}
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var emptyBuffer = context.createBuffer(1, 2048, context.sampleRate);
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var merger = context.createChannelMerger();
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is(merger.channelCount, 2, "merger node has 2 input channels by default");
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is(merger.channelCountMode, "max", "Correct channelCountMode for the merger node");
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is(merger.channelInterpretation, "speakers", "Correct channelCountInterpretation for the merger node");
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for (var i = 0; i < 4; ++i) {
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var source = context.createBufferSource();
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source.buffer = buffers[i];
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source.connect(merger, 0, i);
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source.start(0);
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}
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return merger;
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},
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createExpectedBuffers: function(context) {
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var expectedBuffer = context.createBuffer(8, 2048, context.sampleRate);
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for (var i = 0; i < 4; ++i) {
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for (var j = 0; j < 2048; ++j) {
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expectedBuffer.getChannelData(i * 2)[j] = Math.sin(440 * 2 * (i + 1) * Math.PI * j / context.sampleRate);
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}
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}
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return expectedBuffer;
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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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