Quelle test_chaining.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/media/test/test_chaining.html

<!DOCTYPE HTML>
<html>
<head>
  <title>Media test: chained ogg files.</title>
  <meta charset='utf-8'>
  <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>
<pre id="test">
<script class="testbody" type="text/javascript">
var manager = new MediaTestManager;

function finish_test(element) {
  removeNodeAndSource(element);
  manager.finished(element.token);
}

function onended(e) {
  var t = e.target;
  is(t._metadataCount, t._links, "We should have received "+ t._links +
     " metadataloaded event. " + t.src);

  // If we encounter a file that has links with a different numbers of channel,
  // we stop the decoding at the end of the first link. Hence, we report normal
  // |seekable| and |buffered| values.
  if (t._links != 1) {
    is(t.seekable.length, 0, "No seekable ranges should be reported." + t.src);
    is(t.buffered.length, 0, "No buffered region should be reported." + t.src);
  }

  is(t.played.length, 1, "The played region should be continuous." + t.src);

  if (t._links != 1) {
    var oldCurrentTime = t.currentTime;
    t.currentTime = 0.0;
    is(t.currentTime, oldCurrentTime,
        "Seeking should be disabled when playing chained media." + t.src);
  }

  finish_test(t);
}

function onmetadataloaded(e) {
  var t = e.target;
  if (! t._metadataCount) {
    t._metadataCount = 0;
  }

  if (t._metadataCount > 1 && t._links === 1) {
    ok(false, "We should receive only one \"loadedmetadata\" event for a chained file we don't support.")
  }

  // We should be able to assert equality here, but somehow it fails (rarely but
  // still) on try. Instead, we give it a little slack and assert that the index
  // increases monotonically.
  ok(t.mozGetMetadata().index >= t._metadataCount || t._links === 1,
     "The metadata index value should increase." + t.src);

  ok(t.currentTime >= t._prevCurrentTime,
     "The currenttime should be increased correctly in new chained part.");
  t._prevCurrentTime = t.currentTime;

  // The files have all a user comment name 'index' that increments at each link
  // in the chained media.
  t._metadataCount++;
  if (!t.playing && !t.ended) {
    t.play();
  }
}

function startTest(test, token) {
  var elemType = /^audio/.test(test.type) ? "audio" : "video";
  var element = document.createElement(elemType);
  document.body.appendChild(element);
  manager.started(token);
  element._links= test.links;
  element.src = test.name;
  element.token = token;
  element.controls = true;
  element.addEventListener("loadedmetadata", onmetadataloaded);
  element.addEventListener("ended", onended);
  element.preload = "metadata";
  element._prevCurrentTime = 0;
}

manager.runTests(gChainingTests, startTest);
</script>
</pre>
</body>
</html>

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