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<!DOCTYPE HTML>
<html>
<head>
<title>MSE: verify correct frames selected for given position</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, v) => {
await once(ms, "sourceopen");
const sb = ms.addSourceBuffer("video/webm");
let arrayBuffer = await fetchWithXHR("seek.webm");
let p = once(v, "loadedmetadata");
// Append entire file covering range [0, 4].
sb.appendBuffer(new Uint8Array(arrayBuffer));
await p;
is(v.currentTime, 0, "currentTime has correct initial value");
is(v.videoWidth, 320, "videoWidth has correct initial value");
is(v.videoHeight, 240, "videoHeight has correct initial value");
arrayBuffer = await fetchWithXHR("seek_lowres.webm");
// Append initialization segment.
info("Appending low-res init segment");
p = once(sb, "updateend");
sb.appendBuffer(new Uint8Array(arrayBuffer, 0, 438));
await p;
info("Appending low-res range [2,4]");
// Append media segment covering range [2, 4].
p = once(sb, "updateend");
sb.appendBuffer(new Uint8Array(arrayBuffer, 51003));
await p;
ms.endOfStream();
info("Seeking to t=3");
p = Promise.all([once(v, "seeked"), once(v, "resize")]);
v.currentTime = 3;
await p;
is(v.currentTime, 3, "Video currentTime at target");
is(v.videoWidth, 160, "videoWidth has correct low-res value");
is(v.videoHeight, 120, "videoHeight has correct low-res value");
info("Seeking to t=1");
p = Promise.all([once(v, "seeked"), once(v, "resize")]);
v.currentTime = 1;
await p;
is(v.currentTime, 1, "Video currentTime at target");
is(v.videoWidth, 320, "videoWidth has correct high-res value");
is(v.videoHeight, 240, "videoHeight has correct high-res value");
SimpleTest.finish();
});
</script>
</pre>
</body>
</html>
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