<!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>
