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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_channelMergerNode.html Normal file
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<!DOCTYPE HTML>
<html>
<head>
<title>Test ChannelMergerNode</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 gTest = {
length: 2048,
numberOfChannels: 6,
createGraph: function(context) {
var buffers = [];
for (var j = 0; j < 6; ++j) {
var buffer = context.createBuffer(2, 2048, context.sampleRate);
for (var i = 0; i < 2048; ++i) {
buffer.getChannelData(0)[i] = Math.sin(440 * 2 * (j + 1) * Math.PI * i / context.sampleRate);
// Second channel is silent
}
buffers.push(buffer);
}
var merger = context.createChannelMerger();
is(merger.channelCount, 1, "merger node has 1 input channels");
is(merger.channelCountMode, "explicit", "Correct channelCountMode for the merger node");
is(merger.channelInterpretation, "speakers", "Correct channelCountInterpretation for the merger node");
for (var i = 0; i < 6; ++i) {
var source = context.createBufferSource();
source.buffer = buffers[i];
source.connect(merger, 0, i);
source.start(0);
}
return merger;
},
createExpectedBuffers: function(context) {
var expectedBuffer = context.createBuffer(6, 2048, context.sampleRate);
for (var i = 0; i < 6; ++i) {
for (var j = 0; j < 2048; ++j) {
expectedBuffer.getChannelData(i)[j] = 0.5 * Math.sin(440 * 2 * (i + 1) * Math.PI * j / context.sampleRate);
}
}
return expectedBuffer;
},
};
runTest();
</script>
</pre>
</body>
</html>