<!DOCTYPE HTML> <html> <head> <title>MSE: data gap detection</title> <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <script type="text/javascript" src="mediasource.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> </head> <body> <pre id="test"> <script class="testbody" type="text/javascript"> SimpleTest.waitForExplicitFinish(); runWithMSE(function(ms, el) { var threshold = 0.5; // gap threshold in seconds. var fuzz = 0.000001; // fuzz when comparing double. once(ms, 'sourceopen').then(function() { ok(true, "Receive a sourceopen event"); var videosb = ms.addSourceBuffer("video/mp4"); var vchunks = [ {start: 0, end: 3.203333}, { start: 3.203333, end: 6.406666}]; fetchAndLoad(videosb, 'bipbop/bipbop_video', ['init'], '.mp4') .then(fetchAndLoad.bind(null, videosb, 'bipbop/bipbop_video', range(1, 5), '.m4s')) .then(function() { // We will insert a gap of threshold videosb.timestampOffset = threshold; return fetchAndLoad(videosb, 'bipbop/bipbop_video', range(5, 9), '.m4s'); }).then(function() { // HTMLMediaElement fires 'waiting' if somebody invokes |play()| before the MDSM // has notified it of available data. Make sure that we get 'playing' before // we starting waiting for 'waiting'. info("Invoking play()"); var p = once(el, 'playing'); el.play(); return p; }).then(function() { return once(el, 'waiting'); }).then(function() { // We're waiting for data after the start of the last frame. // 0.033333 is the duration of the last frame. ok(el.currentTime >= vchunks[1].end - 0.033333 + threshold - fuzz && el.currentTime <= vchunks[1].end + threshold + fuzz, "skipped the gap properly: " + el.currentTime + " " + (vchunks[1].end + threshold)); is(el.buffered.length, 2, "buffered range has right length"); // Now we test that seeking will succeed despite the gap. el.currentTime = el.buffered.end(0) + (threshold / 2); return once(el, 'seeked'); }).then(function() { // Now we test that we don't pass the gap. // Clean up our sourcebuffer by removing all data. videosb.timestampOffset = 0; videosb.remove(0, Infinity); el.currentTime = 0; el.pause(); return once(videosb, "updateend"); }).then(function() { return fetchAndLoad(videosb, 'bipbop/bipbop_video', range(1, 5), '.m4s'); }).then(function() { // We will insert a gap of threshold + 1ms videosb.timestampOffset = threshold + 1/1000; return fetchAndLoad(videosb, 'bipbop/bipbop_video', range(5, 9), '.m4s'); }).then(function() { info("Invoking play()"); var p = once(el, 'playing'); el.play(); return p; }).then(function() { return once(el, 'waiting'); }).then(function() { // We're waiting for data after the start of the last frame. // 0.033333 is the duration of the last frame. ok(el.currentTime >= vchunks[0].end - 0.033333 - fuzz && el.currentTime <= vchunks[0].end + fuzz, "stopped at the gap properly: " + el.currentTime + " " + vchunks[0].end); SimpleTest.finish(); }); }); }); </script> </pre> </body> </html>