src/third_party/WebKit/LayoutTests/http/tests/media/media-source/webkitmediasource-duration.html

   1 <!DOCTYPE html>
   2 <html>
   3   <head>
   4     <script src="/media-resources/video-test.js"></script>
   5     <script src="/media/resources/media-source/webm/segment-info.js"></script>
   6     <script src="webkitmediasource-util.js"></script>
   7     <script>
   8       var segmentHelper = new MediaSourceTest.SegmentHelper(WebMSegmentInfo.testWebM);
   9       var seekTo = 2;
  10       var newDuration = 1;
  11
  12       function onSourceOpen(event)
  13       {
  14         mediaSource.removeEventListener('webkitsourceopen', onSourceOpen);
  15
  16         // Add an initialization segment and multiple media segments.
  17         segmentHelper.addSourceBuffer();
  18         segmentHelper.appendInitSegment();
  19         segmentHelper.appendAllMediaSegments();
  20
  21         // Appending all segments triggers a playing event;
  22         // add a listener for that event.
  23         video.addEventListener('playing', onPlaying);
  24       }
  25
  26       function onPlaying(event)
  27       {
  28         consoleWrite("Original duration = " + mediaSource.duration.toFixed());
  29         video.currentTime = seekTo;
  30
  31         // Changing video current-time triggers a seeked event.
  32         // Add a listener to it.
  33         video.addEventListener('seeked', onSeeked);
  34       }
  35
  36       function onSeeked(event)
  37       {
  38         // Playtime should now be at 2 seconds.
  39         // Set duration to < current playtime.
  40         mediaSource.duration = newDuration;
  41         testExpected("mediaSource.duration", newDuration, "==");
  42
  43         // Because the duration was set to be before the playback position,
  44         // current playback position should now be the same as the new duration.
  45         testExpected("mediaSource.duration", video.currentTime, "==");
  46         consoleWrite("PASS: Media Source duration truncated and current time changed to = " + mediaSource.duration);
  47         endTest();
  48       }
  49
  50       function start()
  51       {
  52         findMediaElement();
  53
  54         waitForEventAndFail('error');
  55
  56         mediaSource.addEventListener('webkitsourceopen', onSourceOpen);
  57
  58         segmentHelper.init(video, function (success)
  59         {
  60           if (!success) {
  61             failTest("Failed to load segment data");
  62             return;
  63           }
  64
  65           MediaSourceTest.setSrcToMediaSourceTestURL(video);
  66         });
  67       }
  68     </script>
  69   </head>
  70   <body onload="start()">
  71     <video autoplay controls></video>
  72     <p>Tests simple operations with duration attribute of MediaSource object.</p>
  73   </body>
  74 </html>