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import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

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Roy Tam 2018-01-19 03:59:58 +08:00
commit dcd9973243
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dom/media/webaudio/test/test_audioParamSetCurveAtTimeZeroDuration.html Normal file
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<!DOCTYPE HTML>
<html>
<head>
<title>Test AudioParam.linearRampToValue</title>
<script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="webaudio.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
var T0 = 0;
var gTest = {
length: 2048,
numberOfChannels: 1,
createGraph: function(context) {
var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
sourceBuffer.getChannelData(0)[i] = 1;
}
var source = context.createBufferSource();
source.buffer = sourceBuffer;
var gain = context.createGain();
gain.gain.setValueCurveAtTime(this.curve, this.T0, 0);
source.connect(gain);
source.start(0);
return gain;
},
createExpectedBuffers: function(context) {
this.T0 = 1024 / context.sampleRate;
this.curve = new Float32Array(100);
for (var i = 0; i < 100; ++i) {
this.curve[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
}
var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate);
for (var i = 0; i < 1024; ++i) {
expectedBuffer.getChannelData(0)[i] = 1;
}
for (var i = 1024; i < 2048; ++i) {
expectedBuffer.getChannelData(0)[i] = this.curve[99];
}
return expectedBuffer;
},
};
runTest();
</script>
</pre>
</body>
</html>