third_party/web_platform_tests/media-source/mediasource-seek-during-pending-seek.html - cobalt - Git at Google

 <!DOCTYPE html>
 <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 = secondSegmentInfo.timecode;
                   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()
               {
                   test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
                   mediaSource.endOfStream();
               });

               test.waitForExpectedEvents(function()
               {
                   assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
                   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 = secondSegmentInfo.timecode;
                   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 = thirdSegmentInfo.timecode;
                   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()
               {
                   assert_true(mediaElement.seeking, 'mediaElement is still seeking');

                   // Append media data for the second seek position.
                   test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
                   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');

                   test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
                   mediaSource.endOfStream();
               });

               test.waitForExpectedEvents(function()
               {
                   assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
                   test.done();
               });
           }, 'Test seeking to a new location during a pending seek.');
         </script>
     </body>
 </html>
	<!DOCTYPE html>
	<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 = secondSegmentInfo.timecode;
	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()
	{
	test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
	mediaSource.endOfStream();
	});

	test.waitForExpectedEvents(function()
	{
	assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
	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 = secondSegmentInfo.timecode;
	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 = thirdSegmentInfo.timecode;
	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()
	{
	assert_true(mediaElement.seeking, 'mediaElement is still seeking');

	// Append media data for the second seek position.
	test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer');
	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');

	test.expectEvent(mediaSource, 'sourceended', 'mediaSource ended');
	mediaSource.endOfStream();
	});

	test.waitForExpectedEvents(function()
	{
	assert_greater_than(mediaElement.readyState, mediaElement.HAVE_CURRENT_DATA, 'Greater than HAVE_CURRENT_DATA');
	test.done();
	});
	}, 'Test seeking to a new location during a pending seek.');
	</script>
	</body>
	</html>