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<!DOCTYPE HTML>
<html>
<head>
<title>MSE: data gap detection</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="mediasource.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
</head>
<body>
<pre id="test">
<script class="testbody" type="text/javascript">
SimpleTest.waitForExplicitFinish();
runWithMSE(async (ms, el) => {
const threshold = 0.5; // gap threshold in seconds.
const fuzz = 0.000001; // fuzz when comparing double.
await once(ms, "sourceopen");
ok(true, "Receive a sourceopen event");
const videosb = ms.addSourceBuffer("video/mp4");
const vchunks = [{start: 0, end: 3.203333}, { start: 3.203333, end: 6.406666}];
await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 5), ".m4s");
// We will insert a gap of threshold
videosb.timestampOffset = threshold;
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(5, 9), ".m4s");
// HTMLMediaElement fires 'waiting' if somebody invokes |play()| before the MDSM
// has notified it of available data. Make sure that we get 'playing' before
// we starting waiting for 'waiting'.
info("Invoking play()");
let p = once(el, "playing");
el.play();
await p;
await once(el, "waiting");
// We're waiting for data after the start of the last frame.
// 0.033333 is the duration of the last frame.
ok((el.currentTime >= vchunks[1].end - 0.033333 + threshold - fuzz &&
el.currentTime <= vchunks[1].end + threshold + fuzz),
`skipped the gap properly: ${el.currentTime} ${vchunks[1].end + threshold}`);
is(el.buffered.length, 2, "buffered range has right length");
// Now we test that seeking will succeed despite the gap.
el.currentTime = el.buffered.end(0) + (threshold / 2);
await once(el, "seeked");
// Now we test that we don't pass the gap.
// Clean up our sourcebuffer by removing all data.
videosb.timestampOffset = 0;
videosb.remove(0, Infinity);
el.currentTime = 0;
el.pause();
await once(videosb, "updateend");
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 5), ".m4s");
// We will insert a gap of threshold + 1ms
videosb.timestampOffset = threshold + 1 / 1000;
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(5, 9), ".m4s");
info("Invoking play()");
p = once(el, "playing");
el.play();
await p;
await once(el, "waiting");
// We're waiting for data after the start of the last frame.
// 0.033333 is the duration of the last frame.
ok((el.currentTime >= vchunks[0].end - 0.033333 - fuzz &&
el.currentTime <= vchunks[0].end + fuzz),
`stopped at the gap properly: ${el.currentTime} ${vchunks[0].end}`);
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>
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