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<!DOCTYPE HTML>
<html>
<head>
<title>MSE: Check that playback only starts once we have data at time = 0</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) => {
el.controls = true;
el.addEventListener("loadeddata", () => {
ok(el.buffered.length, "data is buffered");
is(el.buffered.start(0), 0, "must fire loadeddata when data has been loaded");
is(el.currentTime, 0, "must fire loadeddata at start");
});
el.addEventListener("playing", () => {
ok(el.buffered.length, "data is buffered");
is(el.buffered.start(0), 0, "must fire playing when data has been loaded");
ok(el.currentTime >= 0, "must have started playback");
});
await once(ms, "sourceopen");
ok(true, "Receive a sourceopen event");
const videosb = ms.addSourceBuffer("video/mp4");
is(el.readyState, el.HAVE_NOTHING, "readyState is HAVE_NOTHING");
let p = once(el, "loadedmetadata");
await fetchAndLoad(videosb, "bipbop/bipbop_video", ["init"], ".mp4");
await p;
videosb.appendWindowStart = 2;
videosb.appendWindowEnd = 4;
is(el.readyState, el.HAVE_METADATA, "readyState is HAVE_METADATA");
// Load [2.4, 3.968344). 2.4 as it's the first keyframe after 2s and
// 3.968344 as the last frame ends after 4s.
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 8), ".m4s");
is(el.readyState, el.HAVE_METADATA, "readyState is HAVE_METADATA");
// test that appendWindowEnd did its job.
ok(el.buffered.start(0) >= 2, "no data can be found prior appendWindowStart");
ok(el.buffered.end(el.buffered.length - 1) <= 4, "no data can be found beyond appendWindowEnd");
el.play();
await once(el, "play");
videosb.appendWindowStart = 0;
p = once(el, "playing");
await fetchAndLoad(videosb, "bipbop/bipbop_video", range(1, 8), ".m4s");
await p;
ok(true, "playing");
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>
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