79 lines
3.2 KiB
HTML
79 lines
3.2 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<title>MSE: loop-back data not available yet (shorter MUTED audio)</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<script type="text/javascript" src="mediasource.js"></script>
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<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
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</head>
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<body>
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<script class="testbody" type="text/javascript">
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/**
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* This test is used to check whether a looping video can loop back successfully
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* when it has a shorter MUTED audio track than its video track. When reaching
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* EOS for the shorter track, there is no loop-back data at the start position
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* (they are not appended yet) Even that, we should still be able to loop back
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* but the looping would become non-seamless in this situation.
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*/
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SimpleTest.waitForExplicitFinish();
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runWithMSE(async (ms, el) => {
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await once(ms, "sourceopen");
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ok(true, "Receive a sourceopen event");
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const videosb = ms.addSourceBuffer("video/mp4");
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const audiosb = ms.addSourceBuffer("audio/mp4");
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// Here we create a shorter audio than video.
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info(`create different length source buffers`);
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await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
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await fetchAndLoad(videosb, "bipbop/bipbop_video", range(5, 8), ".m4s");
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audiosb.appendWindowEnd = videosb.buffered.end(0) - 0.2;
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await fetchAndLoad(audiosb, "bipbop/bipbop_audio", ["init"], ".mp4");
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await fetchAndLoad(audiosb, "bipbop/bipbop_audio", range(5, 8), ".m4s");
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ms.endOfStream();
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await Promise.all([once(el, "durationchange"), once(ms, "sourceended")]);
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info(`audio=[${audiosb.buffered.start(0)}-${audiosb.buffered.end(0)}], video=[${videosb.buffered.start(0)}-${videosb.buffered.end(0)}]`);
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ok(true, `endOfStream completed, buffer=[${el.buffered.start(0)}, ${el.buffered.end(0)}]`);
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ok(videosb.buffered.end(0) > audiosb.buffered.end(0), `video should be longer than audio`);
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info(`seek to the position where buffered data exists`);
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el.muted = true;
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el.loop = true;
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el.controls = true;
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el.currentTime = el.buffered.start(0);
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await el.play();
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info(`video should trigger seeking when reaching to the end`);
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let seekingCount = 0, seekedCount = 0;
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el.addEventListener("seeking", () => {
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is(++seekingCount, 1, "should only receive seeking once!");
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});
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el.addEventListener("seeked", () => {
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is(++seekedCount, 1, "should only receive seeked once!");
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});
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await once(el, "seeking");
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info(`trim old data before append new data`);
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let p = Promise.all([once(videosb, "updateend"), once(audiosb, "updateend")]);
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videosb.remove(videosb.buffered.start(0), videosb.buffered.end(0));
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audiosb.remove(audiosb.buffered.start(0), audiosb.buffered.end(0));
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await p;
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info(`append new data`);
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const seekedPromise = once(el, "seeked");
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p = Promise.all([once(videosb, "updateend"), once(audiosb, "updateend")]);
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await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 2), ".m4s");
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await fetchAndLoad(audiosb, "bipbop/bipbop_audio", range(1, 2), ".m4s");
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await p;
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info(`audio=[${audiosb.buffered.start(0)}-${audiosb.buffered.end(0)}], video=[${videosb.buffered.start(0)}-${videosb.buffered.end(0)}]`);
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info(`now we should be able to finish seeking to the start position`);
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await seekedPromise;
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SimpleTest.finish(SimpleTest);
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});
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</script>
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</body>
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</html>
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