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