test_fastSeek-forwards.html (2831B)
1 <!DOCTYPE HTML> 2 <html> 3 <!-- 4 https://bugzilla.mozilla.org/show_bug.cgi?id=1022913 5 --> 6 <head> 7 <meta charset="utf-8"> 8 <title>Test for Bug 1022913</title> 9 <script src="/tests/SimpleTest/SimpleTest.js"></script> 10 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> 11 <script type="text/javascript" src="manifest.js"></script> 12 </head> 13 <body> 14 <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1022913">Mozilla Bug 1022913</a> 15 <p id="display"></p> 16 <div id="content" style="display: none"> 17 18 </div> 19 <pre id="test"> 20 </pre> 21 <script type="application/javascript"> 22 23 // Test that if we're doing a fastSeek() forwards that we don't end up 24 // seeking backwards. This can happen if the keyframe before the seek 25 // target is before the current playback position. We'd prefer to seek to 26 // the keyframe after the seek target in this case, but we don't implement 27 // this yet (bug 1026330). 28 var manager = new MediaTestManager; 29 30 var onSecondSeekComplete = function(event) { 31 var v = event.target; 32 v.removeEventListener("seeked", onSecondSeekComplete); 33 ok(v.currentTime >= v.firstSeekTarget, v.name + " seek never go backwards. time=" + v.currentTime + " firstSeekTarget=" + v.firstSeekTarget + " secondSeekTarget=" + v.secondSeekTarget); 34 manager.finished(v.token); 35 removeNodeAndSource(v); 36 }; 37 38 var onFirstSeekComplete = function(event) { 39 var v = event.target; 40 v.removeEventListener("seeked", onFirstSeekComplete); 41 // Seek to 75% of the way between the start and the first keyframe 42 // using fastSeek. We then test that the currentTime doesn't drop back 43 // to the previous keyframe, currentTime should go forwards. 44 v.addEventListener("seeked", onSecondSeekComplete); 45 v.secondSeekTarget = v.keyframes[1] * 0.75; 46 v.fastSeek(v.secondSeekTarget); 47 } 48 49 var onLoadedMetadata = function(event) { 50 // Seek to the mid-point between the start and the first keyframe. 51 var v = event.target; 52 v.removeEventListener("loadedmetadata", onLoadedMetadata); 53 v.addEventListener("seeked", onFirstSeekComplete); 54 v.firstSeekTarget = v.keyframes[1] * 0.5; 55 v.currentTime = v.firstSeekTarget; 56 } 57 58 function startTest(test, token) { 59 manager.started(token); 60 let v = document.createElement("video"); 61 v.src = test.name; 62 v.name = test.name; 63 v.preload = "metadata"; 64 v.token = token; 65 v.target = 0; 66 v.keyframes = test.keyframes; 67 v.keyframeIndex = 0; 68 ok(v.keyframes.length >= 2, v.name + " - video should have at least two sync points"); 69 v.addEventListener("loadedmetadata", onLoadedMetadata); 70 document.body.appendChild(v); 71 } 72 73 manager.runTests(gFastSeekTests, startTest); 74 75 </script> 76 </body> 77 </html>