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 promise resolution of OfflineAudioContext.resume() and O fflineAudioContext.suspend().'); | |
| 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 var scheduledSuspendTime = 0; | |
| 23 | |
| 24 // With the sample rate setting above, this ensures suspension time fall | |
| 25 // in to the render quantum boundary. | |
| 26 var suspendInterval = 0.25; | |
| 27 | |
| 28 context = new OfflineAudioContext(1, sampleRate * renderDuration, sampleRa te); | |
| 29 | |
| 30 function onSuspended() { | |
| 31 Should('context.currentTime', context.currentTime) | |
| 32 .beEqualTo(scheduledSuspendTime); | |
| 33 | |
| 34 scheduledSuspendTime = context.currentTime + suspendInterval; | |
| 35 | |
| 36 // When |scheduledSuspendTime >= renderDuration|, suspending the context | |
| 37 // will reject the promise. | |
| 38 if (scheduledSuspendTime < renderDuration) { | |
| 39 context.suspend(scheduledSuspendTime).then(onSuspended); | |
| 40 } else { | |
| 41 Should('context.suspend(scheduledSuspendTime)', | |
| 42 context.suspend(scheduledSuspendTime)).beRejected(); | |
| 43 } | |
| 44 | |
| 45 context.resume(); | |
| 46 } | |
| 47 | |
| 48 // Initiate the suspension loop. | |
| 49 context.suspend(scheduledSuspendTime).then(onSuspended); | |
| 50 context.startRendering().then(function () { | |
| 51 Should('context.state', context.state).beEqualTo('closed'); | |
| 52 finishJSTest(); | |
| 53 }); | |
|
Raymond Toy
2015/07/15 20:59:13
Would it be nicer to write startRendering() like t
hongchan
2015/07/15 23:24:22
Done.
| |
| 54 | |
| 55 successfullyParsed = true; | |
| 56 </script> | |
| 57 | |
| 58 </body> | |
| 59 </html> | |
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