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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 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 }); |
| 54 |
| 55 successfullyParsed = true; |
| 56 </script> |
| 57 |
| 58 </body> |
| 59 </html> |
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