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<!DOCTYPE HTML>
<html>
<meta charset="utf-8">
<head>
<title>Test MediaStreamTrackAudioSourceNode processing is correct</title>
<script 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) {
let buffer = context.createBuffer(2, 2048, context.sampleRate);
for (let i = 0; i < 2048; ++i) {
buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
buffer.getChannelData(1)[i] = -buffer.getChannelData(0)[i];
}
return buffer;
}
let gTest = {
length: 2048,
skipOfflineContextTests: true,
createGraph(context) {
let sourceGraph = new AudioContext();
let source = sourceGraph.createBufferSource();
source.buffer = createBuffer(context);
let dest = sourceGraph.createMediaStreamDestination();
source.connect(dest);
// Extract first audio track from dest.stream
let track = dest.stream.getAudioTracks()[0];
source.start(0);
let mediaStreamTrackSource = new MediaStreamTrackAudioSourceNode(context, { mediaStreamTrack: track });
// channelCount and channelCountMode should have no effect
mediaStreamTrackSource.channelCount = 1;
mediaStreamTrackSource.channelCountMode = "explicit";
return mediaStreamTrackSource;
},
createExpectedBuffers(context) {
return createBuffer(context);
},
};
runTest();
</script>
</pre>
</body>
</html>
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