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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_mediaStreamAudioSourceNodePassThrough.html Normal file
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<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<head>
<title>Test MediaStreamAudioSourceNode passthrough</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">
function createBuffer(context, delay) {
var buffer = context.createBuffer(2, 2048, context.sampleRate);
for (var i = 0; i < 2048 - delay; ++i) {
buffer.getChannelData(0)[i + delay] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
buffer.getChannelData(1)[i + delay] = -buffer.getChannelData(0)[i + delay];
}
return buffer;
}
var gTest = {
length: 2048,
skipOfflineContextTests: true,
createGraph: function(context) {
var sourceGraph = new AudioContext();
var source = sourceGraph.createBufferSource();
source.buffer = createBuffer(context, 0);
var dest = sourceGraph.createMediaStreamDestination();
source.connect(dest);
source.start(0);
var mediaStreamSource = context.createMediaStreamSource(dest.stream);
// channelCount and channelCountMode should have no effect
mediaStreamSource.channelCount = 1;
mediaStreamSource.channelCountMode = "explicit";
var srcWrapped = SpecialPowers.wrap(mediaStreamSource);
ok("passThrough" in srcWrapped, "MediaStreamAudioSourceNode should support the passThrough API");
srcWrapped.passThrough = true;
return mediaStreamSource;
},
createExpectedBuffers: function(context) {
return context.createBuffer(2, 2048, context.sampleRate);
},
};
runTest();
</script>
</pre>
</body>
</html>