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54 lines
1.4 KiB
HTML
54 lines
1.4 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test DelayNode with maxDelayTime delay - bug 890528</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 delayLength = 1000; // Not on a block boundary
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const outputLength = 4096 // > signalLength + 2 * delayLength;
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function applySignal(buffer, offset) {
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for (var i = 0; i < signalLength; ++i) {
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buffer.getChannelData(0)[offset + i] = Math.cos(Math.PI * i / signalLength);
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}
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}
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var gTest = {
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numberOfChannels: 1,
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createGraph: function(context) {
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var buffer = context.createBuffer(1, signalLength, context.sampleRate);
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applySignal(buffer, 0);
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var source = context.createBufferSource();
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source.buffer = buffer;
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const delayTime = delayLength / context.sampleRate;
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var delay = context.createDelay(delayTime);
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delay.delayTime.value = delayTime;
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source.connect(delay);
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source.start(0);
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return delay;
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},
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createExpectedBuffers: function(context) {
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var expectedBuffer = context.createBuffer(1, outputLength, context.sampleRate);
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applySignal(expectedBuffer, delayLength);
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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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