blob: b3dbbe70e4591e54462afd9bca7b650ed3409f1a [file] [log] [blame]
<!DOCTYPE html>
<html>
<head>
<title>media-source-append-acb-tolerance</title>
<script src="mock-media-source.js"></script>
<script src="../video-test.js"></script>
<script>
var source;
var sourceBuffer;
var initSegment;
var bufferedSamples;
var enqueuedSamples;
if (window.internals)
internals.initializeMockMediaSource();
function impreciseSampleRun(start, end) {
// A common case for WebM files is for duration to have greater precision than timestamps.
// This is because DefaultDuration is always set in nanoseconds (per spec), while other timestamps are set in
// Timescale (usually milliseconds).
// These settings try to replicate the timing found in a typical WebM 30 fps video.
// Duration here is set to microseconds instead of nanoseconds because otherwise MockSampleBox would overflow
// after just 2.133 seconds.
const samples = [];
const fps = 30;
const numFrames = (end - start) * fps;
for (let numFrame = 0; numFrame < numFrames; numFrame++) {
const ptsMilliseconds = Math.round(1000 * (start + numFrame / fps));
const durationMicroseconds = 33333;
samples.push(makeASample(1000 * ptsMilliseconds, 1000 * ptsMilliseconds, durationMicroseconds, 1e6,
1, numFrame === 0 ? SAMPLE_FLAG.SYNC : SAMPLE_FLAG.NONE));
}
return concatenateSamples(samples);
}
window.addEventListener('load', async () => {
findMediaElement();
source = new MediaSource();
testExpected('source.readyState', 'closed');
const sourceOpened = waitFor(source, 'sourceopen');
const videoSource = document.createElement('source');
videoSource.type = 'video/mock; codecs=mock';
videoSource.src = URL.createObjectURL(source);
video.appendChild(videoSource);
await sourceOpened;
run('sourceBuffer = source.addSourceBuffer("video/mock; codecs=mock")');
initSegment = makeAInit(15, [makeATrack(1, 'mock', TRACK_KIND.VIDEO)]);
run('sourceBuffer.appendBuffer(initSegment)');
await waitFor(sourceBuffer, 'updateend');
// Segment A
run('sourceBuffer.appendBuffer(impreciseSampleRun(0, 5))');
await waitFor(sourceBuffer, 'updateend');
// Segment C
run('sourceBuffer.appendBuffer(impreciseSampleRun(10, 15))');
await waitFor(sourceBuffer, 'updateend');
// Segment B
run('sourceBuffer.appendBuffer(impreciseSampleRun(5, 10))');
await waitFor(sourceBuffer, 'updateend');
bufferedSamples = await internals.bufferedSamplesForTrackId(sourceBuffer, 1);
enqueuedSamples = await internals.enqueuedSamplesForTrackID(sourceBuffer, 1);
// 30 samples were appended in total. All of them should have ended up in buffered samples and in the decode queue.
testExpected('bufferedSamples.length', 15 * 30);
testExpected('enqueuedSamples.length', 15 * 30);
enqueuedSamples.forEach(consoleWrite);
endTest();
});
</script>
</head>
<body>
<video controls></video>
</body>
</html>