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52 lines
1.3 KiB
HTML
52 lines
1.3 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Test that WaveShaperNode doesn't corrupt its inputs when the gain is !=
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1.0 (bug 1203616)</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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<script class="testbody" type="text/javascript">
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SimpleTest.waitForExplicitFinish();
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var samplerate = 44100;
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var context = new OfflineAudioContext(1, 44100, samplerate);
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var dc = context.createBufferSource();
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var buffer = context.createBuffer(1, 1, samplerate);
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buffer.getChannelData(0)[0] = 1.0;
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dc.buffer = buffer;
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var gain = context.createGain();
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var ws2 = context.createWaveShaper();
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var ws = [];
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// No-op waveshaper curves.
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for (var i = 0; i < 2; i++) {
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ws[i] = context.createWaveShaper();
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var curve = new Float32Array(2);
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curve[0] = -1.0;
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curve[1] = 1.0;
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ws[i].curve = curve;
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ws[i].connect(context.destination);
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gain.connect(ws[i]);
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}
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dc.connect(gain);
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dc.start();
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gain.gain.value = 0.5;
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context.startRendering().then(buffer => {
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document.querySelector("pre").innerHTML = buffer.getChannelData(0)[0];
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ok(buffer.getChannelData(0)[0] == 1.0, "Volume was handled properly");
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SimpleTest.finish();
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});
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</script>
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<pre>
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</pre>
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</body>
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