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mediasource-duration.html
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<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<html>
<head>
<title>MediaSource.duration & HTMLMediaElement.duration test cases.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mediasource-util.js"></script>
</head>
<body>
<div id="log"></div>
<script>
var subType = MediaSourceUtil.getSubType(MediaSourceUtil.AUDIO_ONLY_TYPE);
var manifestFilenameAudio = subType + "/test-a-128k-44100Hz-1ch-manifest.json";
var manifestFilenameVideo = subType + "/test-v-128k-320x240-30fps-10kfr-manifest.json";
function mediasource_truncated_duration_seek_test(testFunction, description, options)
{
return mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.duration, 2, 'Sufficient test media duration');
var fullDuration = segmentInfo.duration;
var seekTo = fullDuration / 2.0;
var truncatedDuration = seekTo / 2.0;
mediaElement.play();
// Append all the segments
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'playing', 'Playing triggered');
sourceBuffer.appendBuffer(mediaData);
test.waitForExpectedEvents(function()
{
test.expectEvent(mediaElement, 'seeking', 'seeking to seekTo');
test.expectEvent(mediaElement, 'timeupdate', 'timeupdate while seeking to seekTo');
test.expectEvent(mediaElement, 'seeked', 'seeked to seekTo');
mediaElement.currentTime = seekTo;
assert_true(mediaElement.seeking, 'mediaElement.seeking (to seekTo)');
});
test.waitForExpectedEvents(function()
{
assert_greater_than_equal(mediaElement.currentTime, seekTo, 'Playback time has reached seekTo');
assert_false(mediaElement.seeking, 'mediaElement.seeking after seeked to seekTo');
assert_false(sourceBuffer.updating, 'sourceBuffer.updating');
sourceBuffer.remove(truncatedDuration, Infinity);
assert_true(sourceBuffer.updating, 'sourceBuffer.updating');
test.expectEvent(sourceBuffer, 'updatestart', 'sourceBuffer');
test.expectEvent(sourceBuffer, 'update', 'sourceBuffer');
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
});
test.waitForExpectedEvents(function()
{
assert_greater_than_equal(mediaElement.currentTime, seekTo, 'Playback time has reached seekTo');
assert_false(sourceBuffer.updating, 'sourceBuffer.updating');
// Remove will not remove partial frames, so the resulting duration is the highest end time
// of the track buffer ranges, and is greater than or equal to the highest coded frame
// presentation time across all track buffer ranges. We first obtain the intersected track buffer
// ranges end time and set the duration to that value.
truncatedDuration = sourceBuffer.buffered.end(sourceBuffer.buffered.length-1);
assert_less_than(truncatedDuration, seekTo,
'remove has removed the current playback position from at least one track buffer');
mediaSource.duration = truncatedDuration;
test.expectEvent(mediaElement, 'seeking', 'Seeking to truncated duration');
// The actual duration may be slightly higher than truncatedDuration because the
// duration is adjusted upwards if necessary to be the highest end time across all track buffer
// ranges. Allow that increase here.
assert_less_than_equal(truncatedDuration, mediaSource.duration,
'Duration should not be less than what was set');
// Here, we assume no test media coded frame duration is longer than 100ms.
assert_less_than(mediaSource.duration - truncatedDuration, 0.1);
// Update our truncatedDuration to be the actual new duration.
truncatedDuration = mediaSource.duration;
assert_true(mediaElement.seeking, 'Seeking after setting truncatedDuration');
});
test.waitForExpectedEvents(function()
{
assert_equals(mediaElement.currentTime, truncatedDuration,
'Playback time is truncatedDuration while seeking');
assert_true(mediaElement.seeking, 'mediaElement.seeking while seeking to truncatedDuration');
assert_equals(mediaElement.duration, truncatedDuration,
'mediaElement truncatedDuration during seek to it');
assert_equals(mediaSource.duration, truncatedDuration,
'mediaSource truncatedDuration during seek to it');
testFunction(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData,
truncatedDuration);
});
}, description, options);
}
mediasource_truncated_duration_seek_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer,
mediaData, truncatedDuration)
{
// Tests that duration truncation below current playback position
// starts seek to new duration.
test.done();
}, 'Test seek starts on duration truncation below currentTime');
mediasource_truncated_duration_seek_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer,
mediaData, truncatedDuration)
{
// The duration has been truncated at this point, and there is an
// outstanding seek pending.
test.expectEvent(sourceBuffer, 'updateend', 'updateend after appending more data');
test.expectEvent(mediaElement, 'timeupdate', 'timeupdate while finishing seek to truncatedDuration');
test.expectEvent(mediaElement, 'seeked', 'seeked to truncatedDuration');
// Allow seek to complete by appending more data beginning at the
// truncated duration timestamp.
sourceBuffer.timestampOffset = truncatedDuration;
sourceBuffer.appendBuffer(mediaData);
test.waitForExpectedEvents(function()
{
assert_greater_than_equal(mediaElement.currentTime, truncatedDuration,
'Playback time has reached truncatedDuration');
assert_approx_equals(mediaElement.duration, truncatedDuration + segmentInfo.duration, 0.05,
'mediaElement duration increased by new append');
assert_equals(mediaSource.duration, mediaElement.duration,
'mediaSource duration increased by new append');
assert_false(mediaElement.seeking, 'mediaElement.seeking after seeked to truncatedDuration');
test.done();
});
}, 'Test appendBuffer completes previous seek to truncated duration');
mediasource_truncated_duration_seek_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer,
mediaData, truncatedDuration)
{
// The duration has been truncated at this point, and there is an
// outstanding seek pending.
test.expectEvent(mediaSource, 'sourceended', 'endOfStream acknowledged');
test.expectEvent(mediaElement, 'timeupdate', 'timeupdate while finishing seek to truncatedDuration');
test.expectEvent(mediaElement, 'seeked', 'seeked to truncatedDuration');
// Call endOfStream() to complete the pending seek.
mediaSource.endOfStream();
test.waitForExpectedEvents(function()
{
assert_greater_than_equal(mediaElement.currentTime, truncatedDuration,
'Playback time has reached truncatedDuration');
// The mediaSource.readyState is "ended". Buffered ranges have been adjusted to the longest track.
truncatedDuration = sourceBuffer.buffered.end(sourceBuffer.buffered.length-1);
assert_equals(mediaElement.duration, truncatedDuration,
'mediaElement truncatedDuration after seek to it');
assert_equals(mediaSource.duration, truncatedDuration,
'mediaSource truncatedDuration after seek to it');
assert_false(mediaElement.seeking, 'mediaElement.seeking after seeked to truncatedDuration');
test.done();
});
}, 'Test endOfStream completes previous seek to truncated duration');
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.duration, 2, 'Sufficient test media duration');
var fullDuration = segmentInfo.duration;
var newDuration = 0.5;
var expectedDurationChangeEventCount = 1;
var durationchangeEventCounter = 0;
var durationchangeEventHandler = test.step_func(function(event)
{
assert_equals(mediaElement.duration, mediaSource.duration, 'mediaElement newDuration');
// Final duration may be greater than originally set as per MSE's 2.4.6 Duration change
// Adjust newDuration accordingly.
assert_less_than_equal(newDuration, mediaSource.duration, 'mediaSource newDuration');
durationchangeEventCounter++;
});
mediaElement.play();
// Append all the segments
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'playing', 'Playing triggered');
sourceBuffer.appendBuffer(mediaData);
test.waitForExpectedEvents(function()
{
assert_less_than(mediaElement.currentTime, newDuration / 2, 'mediaElement currentTime');
assert_false(sourceBuffer.updating, "updating");
// Truncate duration. This should result in one 'durationchange' fired.
sourceBuffer.remove(newDuration, Infinity);
assert_true(sourceBuffer.updating, "updating");
test.expectEvent(sourceBuffer, 'updatestart', 'sourceBuffer');
test.expectEvent(sourceBuffer, 'update', 'sourceBuffer');
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
});
test.waitForExpectedEvents(function()
{
// Media load also fires 'durationchange' event, so only start counting them now.
mediaElement.addEventListener('durationchange', durationchangeEventHandler);
assert_false(sourceBuffer.updating, "updating");
// Truncate duration. This should result in one 'durationchange' fired.
mediaSource.duration = newDuration;
// Final duration may be greater than originally set as per MSE's 2.4.6 Duration change
// Adjust newDuration accordingly.
assert_true(newDuration <= mediaSource.duration, 'adjusted duration');
newDuration = mediaSource.duration;
// Set duration again to make sure it does not trigger another 'durationchange' event.
mediaSource.duration = newDuration;
// Mark endOfStream so that playback can reach 'ended' at the new duration.
test.expectEvent(mediaSource, 'sourceended', 'endOfStream acknowledged');
mediaSource.endOfStream();
// endOfStream can change duration slightly.
// Allow for one more 'durationchange' event only in this case.
var currentDuration = mediaSource.duration;
if (currentDuration != newDuration) {
newDuration = currentDuration;
++expectedDurationChangeEventCount;
}
// Allow media to play to end while counting 'durationchange' events.
test.expectEvent(mediaElement, 'ended', 'Playback ended');
test.waitForExpectedEvents(function()
{
mediaElement.removeEventListener('durationchange', durationchangeEventHandler);
assert_equals(durationchangeEventCounter, expectedDurationChangeEventCount, 'durationchanges');
test.done();
});
});
}, 'Test setting same duration multiple times does not fire duplicate durationchange');
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.duration, 2, 'Sufficient test media duration');
var fullDuration = segmentInfo.duration;
var newDuration = fullDuration / 2;
// Append all the segments
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'loadedmetadata', 'mediaElement');
sourceBuffer.appendBuffer(mediaData);
test.waitForExpectedEvents(function()
{
assert_false(sourceBuffer.updating, "updating");
assert_throws_dom("InvalidStateError", function()
{
mediaSource.duration = newDuration;
}, "duration");
test.done();
});
}, 'Test setting the duration to less than the highest starting presentation timestamp will throw');
mediasource_test(function(test, mediaElement, mediaSource)
{
mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
MediaSourceUtil.fetchManifestAndData(test, manifestFilenameAudio, function(typeAudio, dataAudio)
{
MediaSourceUtil.fetchManifestAndData(test, manifestFilenameVideo, function(typeVideo, dataVideo)
{
var sourceBufferAudio = mediaSource.addSourceBuffer(typeAudio);
var sourceBufferVideo = mediaSource.addSourceBuffer(typeVideo);
var newDuration = 1.2;
sourceBufferAudio.appendWindowEnd = 2.0;
sourceBufferAudio.appendWindowStart = newDuration / 2.0;
sourceBufferAudio.appendBuffer(dataAudio);
sourceBufferVideo.appendWindowEnd = 2.0;
sourceBufferVideo.appendWindowStart = newDuration * 1.3;
sourceBufferVideo.appendBuffer(dataVideo);
test.expectEvent(sourceBufferAudio, "updateend");
test.expectEvent(sourceBufferVideo, "updateend");
test.waitForExpectedEvents(function()
{
assert_equals(sourceBufferAudio.buffered.length, 1);
assert_equals(sourceBufferVideo.buffered.length, 1);
assert_less_than(sourceBufferAudio.buffered.start(0), newDuration);
assert_greater_than(sourceBufferVideo.buffered.start(0), newDuration);
assert_throws_dom("InvalidStateError", function () { mediaSource.duration = newDuration; });
test.done();
});
});
});
}, "Truncating the duration throws an InvalidStateError exception when new duration is less than the highest buffered range start time of one of the track buffers");
mediasource_test(function(test, mediaElement, mediaSource)
{
mediaElement.addEventListener("error", test.unreached_func("Unexpected event 'error'"));
MediaSourceUtil.fetchManifestAndData(test, manifestFilenameAudio, function(typeAudio, dataAudio)
{
MediaSourceUtil.fetchManifestAndData(test, manifestFilenameVideo, function(typeVideo, dataVideo)
{
var sourceBufferAudio = mediaSource.addSourceBuffer(typeAudio);
var sourceBufferVideo = mediaSource.addSourceBuffer(typeVideo);
// Buffer audio [0.8,1.8)
sourceBufferAudio.timestampOffset = 0.8;
sourceBufferAudio.appendWindowEnd = 1.8;
sourceBufferAudio.appendBuffer(dataAudio);
// Buffer video [1.5,3)
sourceBufferVideo.timestampOffset = 1.5;
sourceBufferVideo.appendWindowEnd = 3;
sourceBufferVideo.appendBuffer(dataVideo);
test.expectEvent(sourceBufferAudio, "updateend");
test.expectEvent(sourceBufferVideo, "updateend");
test.waitForExpectedEvents(function()
{
var newDuration = 2.0;
// Verify the test setup
assert_equals(sourceBufferAudio.buffered.length, 1);
assert_equals(sourceBufferVideo.buffered.length, 1);
assert_greater_than(sourceBufferAudio.buffered.end(0), 1.5);
assert_less_than(sourceBufferAudio.buffered.end(0), newDuration);
assert_less_than(sourceBufferVideo.buffered.start(0), newDuration);
assert_greater_than(sourceBufferVideo.buffered.end(0), newDuration + 0.5);
// Verify the expected error
// We assume relocated test video has at least one coded
// frame presentation interval which fits in [>2.0,>2.5)
assert_throws_dom("InvalidStateError", function () { mediaSource.duration = newDuration; });
test.done();
});
});
});
}, "Truncating the duration throws an InvalidStateError exception when new duration is less than a buffered coded frame presentation time");
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_less_than(segmentInfo.duration, 60, 'Sufficient test media duration');
sourceBuffer.appendBuffer(mediaData);
test.expectEvent(sourceBuffer, 'updateend', 'Media data appended to the SourceBuffer');
test.waitForExpectedEvents(function()
{
mediaSource.duration = 60;
assert_false(sourceBuffer.updating, 'No SourceBuffer update when duration is increased');
test.done();
});
}, 'Increasing the duration does not trigger any SourceBuffer update');
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.duration, 2, 'Sufficient test media duration');
mediaElement.play();
sourceBuffer.appendBuffer(mediaData);
test.expectEvent(sourceBuffer, 'updateend', 'Media data appended to the SourceBuffer');
test.waitForExpectedEvents(function()
{
mediaSource.duration = 60;
assert_false(sourceBuffer.updating, 'No SourceBuffer update when duration is increased');
test.done();
});
}, 'Increasing the duration during media playback does not trigger any SourceBuffer update');
</script>
</body>
</html>