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| (Empty) | |
| 1 <!-- Used by media_constrained_network_perf to record perf metrics. --> |
| 2 <!DOCTYPE html> |
| 3 <html lang="en-US"> |
| 4 <head> |
| 5 <title>Constrained Video Test</title> |
| 6 </head> |
| 7 |
| 8 <body> |
| 9 <video/> |
| 10 </body> |
| 11 |
| 12 <script type="text/javascript"> |
| 13 var video = document.querySelector('video'); |
| 14 |
| 15 // Tracks time when page load completes and src= is set. |
| 16 var loadTime; |
| 17 |
| 18 // Tracks time when playback starts. |
| 19 var startTime; |
| 20 |
| 21 // Metrics to record. See media_constrained_network_perf for more details. |
| 22 // Use -1 to indicate that we haven't recorded these values yet. The PyAuto |
| 23 // controller will poll for these values until they are each >= 0. |
| 24 var extra_play_percentage = -1, time_to_playback = -1; |
| 25 |
| 26 video.addEventListener('playing', function(event) { |
| 27 startTime = new Date().getTime(); |
| 28 |
| 29 time_to_playback = Math.max(0, startTime - loadTime); |
| 30 }, false); |
| 31 |
| 32 video.addEventListener('ended', function(event) { |
| 33 playTime = new Date().getTime() - startTime; |
| 34 durMs = video.duration * 1000; |
| 35 |
| 36 extra_play_percentage = Math.max(0, (playTime - durMs) / durMs) |
| 37 }, false); |
| 38 |
| 39 // Called by the PyAuto controller to initiate testing. |
| 40 function startTest(src) { |
| 41 loadTime = new Date().getTime(); |
| 42 video.src = src |
| 43 video.play(); |
| 44 |
| 45 if (window.domAutomationController) |
| 46 window.domAutomationController.send(true); |
| 47 } |
| 48 </script> |
| 49 </html> |
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Chromium Code Reviews
Issue 8802030:
Introduce new PyAuto test to measure EPT, TTP metrics. (Closed)
Base URL: http://git.chromium.org/chromium/src.git@master