Chromium Code Reviews Chromium Code Reviews
Issue 1140723003:
Implement suspend() and resume() for OfflineAudioContext (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master| OLD | NEW |
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| (Empty) | |
| 1 <!doctype html> | |
| 2 <html> | |
| 3 <head> | |
| 4 <script src="../resources/js-test.js"></script> | |
| 5 <script src="resources/compatibility.js"></script> | |
| 6 <script src="resources/audio-testing.js"></script> | |
| 7 </head> | |
| 8 | |
| 9 <body> | |
| 10 <script> | |
| 11 description('Test OfflineAudioContext.resume() and OfflineAudioContext.sus pend() with the timed sequence.'); | |
| 12 window.jsTestIsAsync = true; | |
| 13 | |
| 14 var context; | |
| 15 | |
| 16 // The sample rate is multiple of the rendering quantum, so suspension | |
| 17 // times fall in to the render quantum boundary. | |
| 18 var renderQuantum = 128; | |
| 19 | |
| 20 var sampleRate = renderQuantum * 100; | |
| 21 var renderDuration = 2; | |
| 22 | |
| 23 // These numbers are in an arbitrary order, but not randomly generated in | |
| 24 // runtime to avoid moving pieces. However, it is safe to arrange them | |
| 25 // in a random order in runtime. | |
| 26 // | |
| 27 // Also these numbers are multiple of 0.25, so they are supposed to fall | |
| 28 // in the render quantum boundary for easier and more intuitive | |
| 29 // verification. | |
| 30 var suspendTimes = [0.25, 0.75, 1.0, 0.5, 1.25, 0.0, 1.75]; | |
| 31 | |
| 32 // Sorted ascending suspend time is our expected result. | |
| 33 var expectedSuspendTimes = suspendTimes.slice(0).sort(function (a, b) { | |
| 34 return a - b; | |
| 35 }); | |
| 36 | |
| 37 var actualSuspendTimes = []; | |
| 38 | |
| 39 context = new OfflineAudioContext(1, sampleRate * renderDuration, sampleRa te); | |
| 40 | |
| 41 for (var i = 0; i < suspendTimes.length; i++) { | |
| 42 | |
| 43 // Schedule suspends in a random time order, but the actual suspend | |
| 44 // must happen in ascending time order. | |
| 45 scheduleSuspend(suspendTimes[i]); | |
| 46 | |
| 47 } | |
| 48 | |
| 49 function scheduleSuspend(suspendTime) { | |
| 50 context.suspend(suspendTime).then(function () { | |
| 51 actualSuspendTimes.push(suspendTime); | |
| 52 context.resume(); | |
| 53 }) | |
| 54 } | |
| 55 | |
| 56 function verifyResult() { | |
| 57 | |
| 58 for (var i = 0; i < actualSuspendTimes.length; i++) { | |
| 59 var scheduledOrder = suspendTimes.indexOf(actualSuspendTimes[i]) | |
| 60 var expectedOrder = expectedSuspendTimes.indexOf(actualSuspendTimes[i] ) | |
| 61 | |
| 62 Should('The actual resolution order of the suspend ' + scheduledOrder + | |
| 63 ' (' + suspendTimes[scheduledOrder].toFixed(2) + ' sec.)', i) | |
| 64 .beEqualTo(expectedOrder); | |
| 65 } | |
| 66 } | |
| 67 | |
| 68 context.startRendering().then(function () { | |
| 69 verifyResult(); | |
| 70 finishJSTest(); | |
| 71 }); | |
|
Raymond Toy
2015/07/15 20:59:13
Would it be nicer to write this as
startRendering
hongchan
2015/07/15 23:24:22
Done.
| |
| 72 | |
| 73 successfullyParsed = true; | |
| 74 </script> | |
| 75 | |
| 76 </body> | |
| 77 </html> | |
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