| <!DOCTYPE html> |
| <!-- Copyright © 2016 Chromium authors and World Wide Web Consortium, (Massachusetts Institute of Technology, ERCIM, Keio University, Beihang). --> |
| <html> |
| <head> |
| <title>HTMLVideoElement.getVideoPlaybackQuality() test cases.</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) |
| { |
| var previousQuality = mediaElement.getVideoPlaybackQuality(); |
| var timeUpdateCount = 0; |
| mediaElement.addEventListener("timeupdate", test.step_func(function (e) |
| { |
| var videoElement = e.target; |
| var newQuality = videoElement.getVideoPlaybackQuality(); |
| var now = window.performance.now(); |
| |
| assert_not_equals(previousQuality, newQuality, |
| "New quality object is different from the previous one"); |
| assert_greater_than(newQuality.creationTime, previousQuality.creationTime, |
| "creationTime increases monotonically"); |
| assert_approx_equals(newQuality.creationTime, now, 100, |
| "creationTime roughly equals current time"); |
| |
| assert_greater_than_equal(newQuality.totalVideoFrames, 0, "totalVideoFrames >= 0"); |
| assert_greater_than_equal(newQuality.totalVideoFrames, previousQuality.totalVideoFrames, |
| "totalVideoFrames increases monotonically"); |
| assert_less_than(newQuality.totalVideoFrames, 300, |
| "totalVideoFrames should remain low as duration is less than 10s and framerate less than 30fps"); |
| |
| assert_greater_than_equal(newQuality.droppedVideoFrames, 0, "droppedVideoFrames >= 0"); |
| assert_greater_than_equal(newQuality.droppedVideoFrames, previousQuality.droppedVideoFrames, |
| "droppedVideoFrames increases monotonically"); |
| assert_less_than_equal(newQuality.droppedVideoFrames, newQuality.totalVideoFrames, |
| "droppedVideoFrames is only a portion of totalVideoFrames"); |
| |
| previousQuality = newQuality; |
| timeUpdateCount++; |
| })); |
| |
| mediaElement.addEventListener('error', test.unreached_func("Unexpected event 'error'")); |
| |
| sourceBuffer.appendBuffer(mediaData); |
| test.expectEvent(sourceBuffer, 'updateend', 'sourceBuffer'); |
| |
| test.waitForExpectedEvents(function() |
| { |
| assert_false(sourceBuffer.updating, "updating"); |
| mediaSource.endOfStream(); |
| assert_less_than(mediaSource.duration, 10, "duration"); |
| mediaElement.play().catch(test.unreached_func("Unexpected promise rejection"));; |
| test.expectEvent(mediaElement, 'ended', 'mediaElement'); |
| }); |
| |
| test.waitForExpectedEvents(function() |
| { |
| assert_greater_than(timeUpdateCount, 2, "timeUpdateCount"); |
| test.done(); |
| }); |
| }, "Test HTMLVideoElement.getVideoPlaybackQuality() with MediaSource API"); |
| </script> |
| </body> |
| </html> |
