test_audioParamTimelineDestinationOffset.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test AudioParam timeline events scheduled after the destination stream has started playback</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">

SimpleTest.requestFlakyTimeout("This test needs to wait until the AudioDestinationNode's stream's timer starts.");

var gTest = {

  length: 16384,

  numberOfChannels: 1,

  createGraphAsync(context, callback) {

    var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate);

    for (var i = 0; i < 2048; ++i) {

      sourceBuffer.getChannelData(0)[i] = 1;

    setTimeout(function() {

      var source = context.createBufferSource();

      source.buffer = sourceBuffer;

      source.start(context.currentTime);

      source.stop(context.currentTime + sourceBuffer.duration);

      var gain = context.createGain();

      gain.gain.setValueAtTime(0, context.currentTime);

      gain.gain.setTargetAtTime(0, context.currentTime + sourceBuffer.duration, 1);

      source.connect(gain);

      callback(gain);

    }, 100);

},

};

runTest();

</script>

</pre>

</body>

</html>