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<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=778077
-->
<head>
<meta charset="utf-8">
<title>Test for Bug 778077</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>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=778077">Mozilla Bug 778077</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
</pre>
<script type="application/javascript">
/** Test for Bug 778077 - HTMLMediaElement.fastSeek() **/
// Iterate through a list of keyframe timestamps, and seek to
// halfway between the keyframe and the keyframe after it.
var manager = new MediaTestManager;
function doSeek(v) {
// fastSeek to half way between this keyframe and the next, or if this is the last
// keyframe seek to halfway between this keyframe and the end of media.
var nextKeyFrame = (v.keyframeIndex + 1) < v.keyframes.length ? v.keyframes[v.keyframeIndex + 1] : v.duration;
v.target = (v.keyframes[v.keyframeIndex] + nextKeyFrame) / 2;
v.fastSeek(v.target);
ok(Math.abs(v.currentTime - v.target) < 0.01,
v.name + " seekTo=" + v.target + " currentTime (" + v.currentTime + ") should be close to seek target initially");
}
function onloadedmetadata(event) {
var v = event.target;
doSeek(v);
}
function onseeked(event) {
var v = event.target;
var keyframe = v.keyframes[v.keyframeIndex];
// Check that the current time ended up roughly after the keyframe.
// We must be a bit fuzzy here, as the decoder backend may actually
// seek to the audio sample prior to the keyframe.
ok(v.currentTime >= keyframe - 0.05,
v.name + " seekTo=" + v.target + " currentTime (" + v.currentTime +
") should be end up roughly after keyframe (" + keyframe + ") after fastSeek");
ok(v.currentTime <= v.target,
v.name + " seekTo=" + v.target + " currentTime (" + v.currentTime +
") should be end up less than target after fastSeek");
v.keyframeIndex++
if (v.keyframeIndex == v.keyframes.length) {
v.src = "";
v.remove();
manager.finished(v.token);
} else {
doSeek(v);
}
}
function startTest(test, token) {
manager.started(token);
let v = document.createElement("video");
v.src = test.name;
v.name = test.name;
v.preload = "metadata";
v.token = token;
v.target = 0;
v.keyframes = test.keyframes;
v.keyframeIndex = 0;
ok(v.keyframes.length, v.name + " - video should have at least one sync point");
v.addEventListener("loadedmetadata", onloadedmetadata);
v.addEventListener("seeked", onseeked);
document.body.appendChild(v);
}
manager.runTests(gFastSeekTests, startTest);
</script>
</body>
</html>
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