<!DOCTYPE HTML>
<html>
<head>
  <title>Test GainNode in presence of loops</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">

var gTest = {
  length: 4096,
  numberOfChannels: 1,
  createGraph(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;
    source.loop = true;
    source.start(0);
    source.stop(sourceBuffer.duration * 2);

    var gain = context.createGain();
    // Adjust the gain in a way that we don't just end up modifying AudioChunk::mVolume
    gain.gain.setValueAtTime(0.5, 0);
    source.connect(gain);
    return gain;
  },
  createExpectedBuffers(context) {
    var expectedBuffer = context.createBuffer(1, 4096, context.sampleRate);
    for (var i = 0; i < 4096; ++i) {
      expectedBuffer.getChannelData(0)[i] = 0.5;
    }
    return expectedBuffer;
  },
};

runTest();

</script>
</pre>
</body>
</html>
