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53 lines
1.5 KiB
HTML
53 lines
1.5 KiB
HTML
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<!DOCTYPE HTML>
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<html>
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<head>
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<title>Test ScriptProcessorNode playbackTime for bug 970773</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 class="testbody" type="text/javascript">
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SimpleTest.waitForExplicitFinish();
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var context = new AudioContext();
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const delay = 0.1;
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function doTest() {
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const processorBufferLength = 256;
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// |currentTime| may include double precision floating point
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// rounding errors, so round to nearest integer sample to ignore these.
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var minimumPlaybackSample =
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Math.round(context.currentTime * context.sampleRate) +
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processorBufferLength;
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var sp = context.createScriptProcessor(processorBufferLength);
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sp.connect(context.destination);
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sp.onaudioprocess =
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function(e) {
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is(e.inputBuffer.length, processorBufferLength,
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"expected buffer length");
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var playbackSample = Math.round(e.playbackTime * context.sampleRate)
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ok(playbackSample >= minimumPlaybackSample,
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"playbackSample " + playbackSample +
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" beyond expected minimum " + minimumPlaybackSample);
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sp.onaudioprocess = null;
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SimpleTest.finish();
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};
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}
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// Wait until AudioDestinationNode has accumulated enough 'extra' time so that
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// a failure would be easily detected.
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(function waitForExtraTime() {
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if (context.currentTime < delay) {
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SimpleTest.executeSoon(waitForExtraTime);
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} else {
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doTest();
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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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