test_mediaStreamTrackAudioSourceNodeCrossOrigin.html

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<!DOCTYPE HTML>

<html>

<meta charset="utf-8">

<head>

<title>Test MediaStreamTrackAudioSourceNode doesn't get data from cross-origin media resources</title>

<script src="/tests/SimpleTest/SimpleTest.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.waitForExplicitFinish();

const CROSS_ORIGIN_URL = "http://example.org:80/tests/dom/media/webaudio/test/sine-440-10s.opus"

let iterationCount = 0;

let context = null;

let sp;

function processSamples(e) {

  ++iterationCount;

  let buf = e.inputBuffer.getChannelData(0);

  let nonzeroSamplesThisBuffer = 0;

  for (let i = 0; i < buf.length; ++i) {

    if (buf[i] != 0) {

      ++nonzeroSamplesThisBuffer;

  is(nonzeroSamplesThisBuffer, 0,

     "a source that is cross origin cannot be inspected by Web Audio");

  if (iterationCount == 40) {

    sp.onaudioprocess = null;

    context.close();

    SimpleTest.finish();

let audio = new Audio();

audio.src = CROSS_ORIGIN_URL;

audio.onloadedmetadata = function () {

  context = new AudioContext();

  let stream = audio.mozCaptureStream();

  let track = stream.getAudioTracks()[0];

  let node = context.createMediaStreamTrackSource(track);

  node.connect(context.destination);

  sp = context.createScriptProcessor(2048, 1);

  sp.onaudioprocess = processSamples;

  node.connect(sp);

</script>

</pre>

</body>