| <!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 receiving multiple seek requests during a pending seek.</title> |
| <meta name="timeout" content="long"> |
| <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(); |
| |
| // Append all media data for complete playback. |
| test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer end update.'); |
| test.expectEvent(mediaElement, 'loadedmetadata', 'Reached HAVE_METADATA'); |
| test.expectEvent(mediaElement, 'playing', 'Playing media.'); |
| sourceBuffer.appendBuffer(mediaData); |
| |
| test.waitForExpectedEvents(function() |
| { |
| var bufferedRanges = mediaElement.buffered; |
| |
| assert_greater_than_equal(mediaElement.duration, 4.0, 'Duration is >= 4.0s'); |
| assert_equals(bufferedRanges.length, 1, 'Just one buffered range'); |
| assert_less_than_equal(bufferedRanges.start(0), 1.0, 'Buffered range starts <= 1.0s'); |
| assert_greater_than_equal(bufferedRanges.end(0), 4.0, 'Buffered range ends >= 4.0s'); |
| |
| test.expectEvent(mediaElement, 'seeking', 'seeking'); |
| test.expectEvent(mediaElement, 'timeupdate', 'timeupdate'); |
| test.expectEvent(mediaElement, 'seeked', 'seeked'); |
| |
| // Request seeks. |
| mediaElement.currentTime = 1.0; |
| |
| // This 'ephemeral' seek should be invisible to javascript, except any latency incurred in its processing. |
| mediaElement.currentTime = 3.0; |
| |
| mediaElement.currentTime = 1.0; |
| |
| assert_true(mediaElement.seeking, 'Element is seeking'); |
| assert_equals(mediaElement.currentTime, 1.0, 'Element time is at last seek time'); |
| }); |
| |
| test.waitForExpectedEvents(function() |
| { |
| // No more seeking or seeked events should occur. |
| mediaElement.addEventListener('seeking', test.unreached_func("Unexpected event 'seeking'")); |
| mediaElement.addEventListener('seeked', test.unreached_func("Unexpected event 'seeked'")); |
| |
| assert_false(mediaElement.seeking, 'Element is not seeking'); |
| assert_greater_than_equal(mediaElement.currentTime, 1.0, 'Element time is at or after last seek time'); |
| assert_less_than(mediaElement.currentTime, 3.0, 'Element time is before the ephemeral seek time'); |
| |
| var timeBeforeWait = mediaElement.currentTime; |
| test.waitForCurrentTimeChange(mediaElement, function() |
| { |
| // Time should have advanced a little, but not yet reached the ephemeral seek time. |
| assert_greater_than(mediaElement.currentTime, timeBeforeWait, 'Element time has increased'); |
| assert_less_than(mediaElement.currentTime, 3.0, 'Element time is still before the ephemeral seek time'); |
| test.done(); |
| }); |
| }); |
| }, 'Test redundant fully prebuffered seek'); |
| |
| </script> |
| </body> |
| </html> |
