1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
|
<!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>
|
