gecko-dev/dom/media/test/test_chaining.html

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HTML

<!DOCTYPE HTML>
<html>
<head>
<title>Media test: chained ogg files.</title>
<meta charset='utf-8'>
<script type="text/javascript" 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);
// 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";
}
manager.runTests(gChainingTests, startTest);
</script>
</pre>
</body>
</html>