test_video_to_canvas.html

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<!DOCTYPE HTML>

<html>

<!--

https://bugzilla.mozilla.org/show_bug.cgi?id=486646

-->

<head>

  <title>Test for Bug 486646</title>

  <script src="/tests/SimpleTest/SimpleTest.js"></script>

  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

  <script type="text/javascript" src="manifest.js"></script>

</head>

<body>

<script class="testbody" type="text/javascript">

var manager = new MediaTestManager;

function loaded(e) {

  var v = e.target;

  ok(v.readyState >= v.HAVE_CURRENT_DATA,

     "readyState must be >= HAVE_CURRENT_DATA for " + v._name);

  var canvas = document.createElement("canvas");

  canvas.width = v.videoWidth;

  canvas.height = v.videoHeight;

  document.body.appendChild(canvas);

  var ctx = canvas.getContext("2d");

  try {

    ctx.drawImage(v, 0, 0);

    ok(true, "Shouldn't throw exception while drawing to canvas from video for " + v._name);

  } catch (ex) {

    ok(false, "Shouldn't throw exception while drawing to canvas from video for " + v._name);

  v._finished = true;

  v.remove();

  manager.finished(v.token);

function startTest(test, token) {

  var type = getMajorMimeType(test.type);

  if (type != "video")

    return;

  var v = document.createElement('video');

  v.token = token;

  manager.started(token);

  v.src = test.name;

  v._name = test.name;

  v._finished = false;

  v.autoplay = true;

  v.style.display = "none";

  v.addEventListener("ended", loaded);

  document.body.appendChild(v);

SimpleTest.waitForExplicitFinish();

SpecialPowers.pushPrefEnv({"set": [["media.cache_size", 40000]]}, beginTest);

function beginTest() {

  manager.runTests(gSmallTests, startTest);

</script>

</pre>

</body>

</html>