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<script src="/w3c/resources/testharness.js"></script>
<script src="/w3c/resources/testharnessreport.js"></script>
<script src="mediasource-util.js"></script>
<link rel='stylesheet' href='/w3c/resources/testharness.css'>
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<script>
function mediasource_sequencemode_test(testFunction, description, options)
{
return mediasource_testafterdataloaded(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.media.length, 3, 'at least 3 media segments for supported type');
test.failOnEvent(mediaElement, 'error');
sourceBuffer.mode = 'sequence';
assert_equals(sourceBuffer.mode, 'sequence', 'mode after setting it to \'sequence\'');
var initSegment = MediaSourceUtil.extractSegmentData(mediaData, segmentInfo.init);
test.expectEvent(sourceBuffer, 'updatestart', 'initSegment append started.');
test.expectEvent(sourceBuffer, 'update', 'initSegment append success.');
test.expectEvent(sourceBuffer, 'updateend', 'initSegment append ended.');
sourceBuffer.appendBuffer(initSegment);
test.waitForExpectedEvents(function()
{
assert_equals(sourceBuffer.timestampOffset, 0, 'timestampOffset initially 0');
testFunction(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData);
});
}, description, options);
}
function append_segment(test, sourceBuffer, mediaData, info, callback)
{
var mediaSegment = MediaSourceUtil.extractSegmentData(mediaData, info);
test.expectEvent(sourceBuffer, 'updatestart', 'media segment append started.');
test.expectEvent(sourceBuffer, 'update', 'media segment append success.');
test.expectEvent(sourceBuffer, 'updateend', 'media segment append ended.');
sourceBuffer.appendBuffer(mediaSegment);
test.waitForExpectedEvents(callback);
}
function threeDecimalPlaces(number)
{
return Number(number.toFixed(3));
}
// Verifies expected times to 3 decimal places before and after mediaSource.endOfStream(),
// and calls |callback| on success.
function verify_offset_and_buffered(test, mediaSource, sourceBuffer,
expectedTimestampOffset, expectedBufferedRangeStartTime,
expectedBufferedRangeEndTimeAfterEOS,
callback) {
assert_equals(threeDecimalPlaces(sourceBuffer.timestampOffset),
threeDecimalPlaces(expectedTimestampOffset),
'expectedTimestampOffset');
// Prior to EOS, the buffered range end time may not have fully reached the next media
// segment's timecode (adjusted by any timestampOffset). It should not exceed it though.
// Therefore, an exact assertBufferedEquals() will not work here.
assert_equals(sourceBuffer.buffered.length, 1, 'sourceBuffer.buffered has 1 range before EOS');
assert_equals(threeDecimalPlaces(sourceBuffer.buffered.start(0)),
threeDecimalPlaces(expectedBufferedRangeStartTime),
'sourceBuffer.buffered range begins where expected before EOS');
assert_less_than_equal(threeDecimalPlaces(sourceBuffer.buffered.end(0)),
threeDecimalPlaces(expectedBufferedRangeEndTimeAfterEOS),
'sourceBuffer.buffered range ends at or before expected upper bound before EOS');
test.expectEvent(mediaSource, 'sourceended', 'mediaSource endOfStream');
mediaSource.endOfStream();
test.waitForExpectedEvents(function()
{
assertBufferedEquals(sourceBuffer,
'{ [' + expectedBufferedRangeStartTime.toFixed(3) + ', ' + expectedBufferedRangeEndTimeAfterEOS.toFixed(3) + ') }',
'sourceBuffer.buffered after EOS');
callback();
});
}
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(segmentInfo.media[0].timecode, 0, 'segment starts at time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[0], function()
{
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
0, 0,
segmentInfo.media[0].highest_end_time + sourceBuffer.timestampOffset,
test.done);
});
}, 'Test sequence AppendMode appendBuffer(first media segment)');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.media[1].timecode, 0, 'segment starts after time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[1], function()
{
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
-segmentInfo.media[1].timecode, 0,
segmentInfo.media[1].highest_end_time + sourceBuffer.timestampOffset,
test.done);
});
}, 'Test sequence AppendMode appendBuffer(second media segment)');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.media[1].timecode, 0, 'segment starts after time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[1], function()
{
assert_equals(segmentInfo.media[0].timecode, 0, 'segment starts at time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[0], function()
{
// Current timestampOffset should reflect offset required to put media[0]
// immediately after media[1]'s highest frame end timestamp (as was adjusted
// by an earlier timestampOffset).
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
segmentInfo.media[1].highest_end_time - segmentInfo.media[1].timecode, 0,
segmentInfo.media[0].highest_end_time + sourceBuffer.timestampOffset,
test.done);
})
});
}, 'Test sequence AppendMode appendBuffer(second media segment, then first media segment)');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(segmentInfo.media[0].timecode, 0, 'segment starts at time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[0], function()
{
assert_greater_than(segmentInfo.media[1].timecode, 0, 'segment starts after time 0');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[1], function()
{
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
0, 0,
segmentInfo.media[1].highest_end_time + sourceBuffer.timestampOffset,
test.done);
})
});
}, 'Test sequence AppendMode appendBuffer back-to-back(first media segment, then second media segment)');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_greater_than(segmentInfo.media[1].timecode, 0, 'segment starts after time 0');
sourceBuffer.timestampOffset = 10;
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[1], function()
{
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
10 - segmentInfo.media[1].timecode,
10,
segmentInfo.media[1].highest_end_time + sourceBuffer.timestampOffset,
test.done);
});
}, 'Test sequence AppendMode appendBuffer after setting TSO > 0');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
assert_equals(segmentInfo.media[0].timecode, 0, 'segment starts at time 0');
assert_greater_than(segmentInfo.media[4].timecode,
3 * segmentInfo.media[0].highest_end_time,
'2nd segment should start after 3 times first segment\'s end time');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[0], function()
{
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[4], function()
{
verify_offset_and_buffered(test, mediaSource, sourceBuffer,
segmentInfo.media[0].highest_end_time - segmentInfo.media[4].timecode,
0,
segmentInfo.media[4].highest_end_time + sourceBuffer.timestampOffset,
test.done);
});
});
}, 'Test sequence AppendMode appendBuffer with large gap between segments.');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
sourceBuffer.appendWindowStart = 10;
assert_equals(segmentInfo.media[0].timecode, 0, 'segment starts at time 0');
assert_less_than(segmentInfo.media[0].highest_end_time, 10, 'segment ends before time 10');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[0], function()
{
assert_equals(sourceBuffer.timestampOffset, 0, 'timestampOffset is 0');
assertBufferedEquals(sourceBuffer, '{ }', 'sourceBuffer.buffered');
});
test.done();
}, 'Test sequence AppendMode appendBuffer fully before the appendwindow.');
mediasource_sequencemode_test(function(test, mediaElement, mediaSource, segmentInfo, sourceBuffer, mediaData)
{
sourceBuffer.appendWindowEnd = 0.2;
assert_greater_than(segmentInfo.media[1].timecode, 0.2, 'segment starts after time 0.2');
assert_greater_than(segmentInfo.media[1].highest_end_time, 0.2, 'segment ends after time 0.2');
append_segment(test, sourceBuffer, mediaData, segmentInfo.media[1], function()
{
assert_equals(sourceBuffer.timestampOffset, 0, 'timestampOffset is 0');
assertBufferedEquals(sourceBuffer, '{ }', 'sourceBuffer.buffered');
});
test.done();
}, 'Test sequence AppendMode appendBuffer fully after the appendwindow.');
</script>
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