third_party/WebKit/LayoutTests/http/tests/media/video-throttled-load-metadata.html

   1 <html>
   2 <head>
   3     <title>throttled loading metadata</title>
   4     <script src="../../media-resources/media-file.js"></script>
   5     <script src="../../media-resources/video-test.js"></script>
   6     <script>
   7         function loadedmetadata(e)
   8         {
   9             logResult(true, "loaded metadata of media file");
  10             endTest();
  11         }
  12
  13         function error(e)
  14         {
  15             logResult(false, "failed to load media file");
  16             endTest();
  17         }
  18
  19         function start()
  20         {
  21             findMediaElement();
  22
  23             waitForEvent('loadedmetadata', loadedmetadata);
  24             waitForEvent("error", error);
  25             testExpected("video.error", null);
  26
  27             var worker = new Worker("video-throttled-load-metadata-worker.js");
  28             worker.onmessage = function (event) {
  29                 logResult(true, event.data);
  30             }
  31
  32             // Use a .webm to ensure metadata is near the beginning of the file.
  33             var mediaFile = "resources/media-source/webm/test.webm";
  34             video.src = "http://127.0.0.1:8000/media/video-throttled-load.cgi?" +
  35                 "nph=1&name=" + mediaFile + "&throttle=40&type=video/webm";
  36
  37             video.load();
  38         }
  39     </script>
  40 </head>
  41 <body onload="start()">
  42 <video id="video"></video>
  43 <p>
  44 This test case simulates a slow network, and starts a web worker thread to write a log message
  45 when retrieving media metadata to see if the webkit thread is blocked by media retrieving thread.<br>
  46 This test case is for <a href="https://bugs.webkit.org/show_bug.cgi?id=80978">https://bugs.webkit.org/show_bug.cgi?id=80978</a>
  47 </p>
  48 </body>
  49 </html>