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| 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 event handler callback from OfflineAudioContext.resume()
and OfflineAudioContext.suspend().'); |
| 12 window.jsTestIsAsync = true; |
| 13 |
| 14 var context; |
| 15 var renderQuantum = 128; |
| 16 |
| 17 // The sample rate is multiple of the rendering quantum, so suspension |
| 18 // times in the test will fall on the render quantum boundary. Although |
| 19 // this is not necessary, it is easier to understand the test. |
| 20 var sampleRate = renderQuantum * 100; |
| 21 |
| 22 var renderDuration = 2; |
| 23 var scheduledSuspendTime = 0; |
| 24 |
| 25 // With the sample rate setting above, this ensures suspension time fall |
| 26 // in to the render quantum boundary. |
| 27 var suspendInterval = 0.25; |
| 28 |
| 29 function runTest() { |
| 30 context = new OfflineAudioContext(1, sampleRate * renderDuration, sample
Rate); |
| 31 |
| 32 context.onstatechange = function () { |
| 33 if (context.state === 'suspended' && context.currentTime === scheduled
SuspendTime) { |
| 34 |
| 35 testPassed('onstatechange event handler: context is suspended at ' + |
| 36 scheduledSuspendTime + ' second(s).'); |
| 37 |
| 38 scheduledSuspendTime = context.currentTime + suspendInterval; |
| 39 |
| 40 // Scheduling a suspend before the render duration should pass. |
| 41 if (scheduledSuspendTime < renderDuration) { |
| 42 context.suspend(scheduledSuspendTime); |
| 43 testPassed('A new suspend has been scheduled at ' + |
| 44 scheduledSuspendTime + ' second(s).'); |
| 45 } |
| 46 |
| 47 // Scheduling a suspend exactly at the render duration should be |
| 48 // rejected. |
| 49 if (scheduledSuspendTime === renderDuration) { |
| 50 Should('Scheduling at ' + renderDuration + ' seconds', |
| 51 context.suspend(scheduledSuspendTime)).beRejected(); |
| 52 } |
| 53 |
| 54 context.resume(); |
| 55 } |
| 56 }; |
| 57 |
| 58 // This test is for verifying all the event handlers on OAC and that is |
| 59 // why 'oncomplete' is used here. |
| 60 context.oncomplete = function () { |
| 61 Should('oncomplete event handler: context.state', context.state).beEqu
alTo('closed'); |
| 62 finishJSTest(); |
| 63 }; |
| 64 |
| 65 // Schedule the first suspension. |
| 66 context.suspend(scheduledSuspendTime); |
| 67 testPassed('A new suspend has been scheduled at ' + scheduledSuspendTime
+ ' second(s).'); |
| 68 |
| 69 context.startRendering(); |
| 70 } |
| 71 |
| 72 runTest(); |
| 73 successfullyParsed = true; |
| 74 </script> |
| 75 |
| 76 </body> |
| 77 </html> |
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Chromium Code Reviews
Issue 1405413004:
Implement suspend() and resume() for OfflineAudioContext (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master