<!DOCTYPE html>
<!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). -->
<html>
<head>
<title>Test MediaSource behavior when a seek is requested while another seek is pending.</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>
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
mediaElement.play();
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
var firstSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);
var segmentIndex = 2;
var secondSegmentInfo = segmentInfo.media[segmentIndex];
// Append the initialization segment to trigger a transition to HAVE_METADATA.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'loadedmetadata', 'Reached HAVE_METADATA');
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
assert_false(mediaElement.seeking, 'mediaElement is not seeking');
assert_equals(mediaElement.readyState, mediaElement.HAVE_METADATA, 'Still in HAVE_METADATA');
// Seek to a new position before letting the initial seek to 0 completes.
test.expectEvent(mediaElement, 'seeking', 'mediaElement');
mediaElement.currentTime = Math.max(secondSegmentInfo.timev, secondSegmentInfo.timea);
assert_true(mediaElement.seeking, 'mediaElement is seeking');
// Append media data for time 0.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
sourceBuffer.appendBuffer(firstSegment);
});
test.waitForExpectedEvents(function()
{
// Verify that the media data didn't trigger a 'seeking' event or a transition beyond HAVE_METADATA.
assert_true(mediaElement.seeking, 'mediaElement is still seeking');
assert_equals(mediaElement.readyState, mediaElement.HAVE_METADATA, 'Still in HAVE_METADATA');
// Append media data for the current position until the element starts playing.
test.expectEvent(mediaElement, 'seeked', 'mediaElement finished seek');
test.expectEvent(mediaElement, 'playing', 'mediaElement playing');
MediaSourceUtil.appendUntilEventFires(test, mediaElement, 'playing', sourceBuffer, mediaData, segmentInfo, segmentIndex);
});
test.waitForExpectedEvents(function()
{
if (sourceBuffer.updating)
{
// The event playing was fired prior to the appendBuffer completing.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.waitForExpectedEvents(function()
{
assert_false(sourceBuffer.updating, 'append have compleded');
test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
mediaSource.endOfStream();
});
}
else
{
test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
mediaSource.endOfStream();
}
});
test.waitForExpectedEvents(function()
{
// Note: we just completed the seek. However, we only have less than a second worth of data to play. It is possible that
// playback has reached the end since the seek completed.
if (!mediaElement.paused)
{
assert_greater_than_equal(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater or equal than HAVE_CURRENT_DATA');
}
else
{
assert_true(mediaElement.ended);
}
test.done();
});
}, 'Test seeking to a new location before transitioning beyond HAVE_METADATA.');
mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
mediaElement.play();
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
var firstSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.media[0]);
var secondSegmentInfo = segmentInfo.media[2];
var secondSegment = MediaSourceUtil.extractSegmentData(mediaData, secondSegmentInfo);
var segmentIndex = 4;
var thirdSegmentInfo = segmentInfo.media[segmentIndex];
// Append the initialization segment to trigger a transition to HAVE_METADATA.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'loadedmetadata', 'Reached HAVE_METADATA');
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.expectEvent(mediaElement, 'playing', 'mediaElement playing');
sourceBuffer.appendBuffer(firstSegment);
});
test.waitForExpectedEvents(function()
{
assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
// Seek to a new position.
test.expectEvent(mediaElement, 'seeking', 'mediaElement');
mediaElement.currentTime = Math.max(secondSegmentInfo.timev, secondSegmentInfo.timea);
assert_true(mediaElement.seeking, 'mediaElement is seeking');
});
test.waitForExpectedEvents(function()
{
assert_true(mediaElement.seeking, 'mediaElement is still seeking');
// Seek to a second position while the first seek is still pending.
test.expectEvent(mediaElement, 'seeking', 'mediaElement');
mediaElement.currentTime = Math.max(thirdSegmentInfo.timev, thirdSegmentInfo.timea);
assert_true(mediaElement.seeking, 'mediaElement is seeking');
// Append media data for the first seek position.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
sourceBuffer.appendBuffer(secondSegment);
});
test.waitForExpectedEvents(function()
{
// Note that we can't assume that the element is still seeking
// when the seeking event is fired as the operation is asynchronous.
// Append media data for the second seek position.
test.expectEvent(mediaElement, 'seeked', 'mediaElement finished seek');
MediaSourceUtil.appendUntilEventFires(test, mediaElement, 'seeked', sourceBuffer, mediaData, segmentInfo, segmentIndex);
});
test.waitForExpectedEvents(function()
{
assert_false(mediaElement.seeking, 'mediaElement is no longer seeking');
if (sourceBuffer.updating)
{
// The event seeked was fired prior to the appendBuffer completing.
test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
test.waitForExpectedEvents(function()
{
assert_false(sourceBuffer.updating, 'append have compleded');
test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
mediaSource.endOfStream();
});
}
else
{
test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
mediaSource.endOfStream();
}
});
test.waitForExpectedEvents(function()
{
// Note: we just completed the seek. However, we only have less than a second worth of data to play. It is possible that
// playback has reached the end since the seek completed.
if (!mediaElement.paused)
{
assert_greater_than_equal(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater or equal than HAVE_CURRENT_DATA');
}
else
{
assert_true(mediaElement.ended);
}
test.done();
});
}, 'Test seeking to a new location during a pending seek.');
</script>
</body>
</html>