mediasource-getvideoplaybackquality.html

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This test has a WPT meta file that disables it given conditions:
- os == "android" : bug 1550895 (frequently fails on geckoview)
This test has a WPT meta file that expects 1 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /media-source/mediasource-getvideoplaybackquality.html - WPT Dashboard Interop Dashboard

<!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>