test_audioBufferSourceNodeDetached.html

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<!DOCTYPE HTML>

<html>

<head>

  <title>Test AudioBufferSourceNode when an AudioBuffer's getChanneData buffer is detached</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 createGarbage() {

  var s = [];

  for (var i = 0; i < 10000000; ++i) {

    s.push(i);

  var sum = 0;

  for (var i = 0; i < s.length; ++i) {

    sum += s[i];

  return sum;

var worker = new Worker("audioBufferSourceNodeDetached_worker.js");

var gTest = {

  length: 2048,

  numberOfChannels: 1,

  createGraph(context) {

    var buffer = context.createBuffer(1, 10000000, context.sampleRate);

    var data = buffer.getChannelData(0);

    for (var i = 0; i < data.length; ++i) {

      data[i] = (i%100)/100 - 0.5;

    // Detach the buffer now

    var data = buffer.getChannelData(0).buffer;

    worker.postMessage(data, [data]);

    // Create garbage and GC to replace the buffer data with garbage

    SpecialPowers.gc();

    createGarbage();

    SpecialPowers.gc();

    var source = context.createBufferSource();

    source.buffer = buffer;

    source.start();

    // This should play silence

    return source;

},

};

runTest();

</script>

</pre>

</body>

</html>