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| Index: LayoutTests/webaudio/offlineaudiocontext-suspend-resume-promise.html |
| diff --git a/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-promise.html b/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-promise.html |
| new file mode 100644 |
| index 0000000000000000000000000000000000000000..dec1f532d3b3e714fb46c6b3a0fbf1a2b103bc3c |
| --- /dev/null |
| +++ b/LayoutTests/webaudio/offlineaudiocontext-suspend-resume-promise.html |
| @@ -0,0 +1,59 @@ |
| +<!doctype html> |
| +<html> |
| + <head> |
| + <script src="../resources/js-test.js"></script> |
| + <script src="resources/compatibility.js"></script> |
| + <script src="resources/audio-testing.js"></script> |
| + </head> |
| + |
| + <body> |
| + <script> |
| + description('Test promise resolution of OfflineAudioContext.resume() and OfflineAudioContext.suspend().'); |
| + window.jsTestIsAsync = true; |
| + |
| + var context; |
| + |
| + // The sample rate is multiple of the rendering quantum, so suspension |
| + // times fall in to the render quantum boundary. |
| + var renderQuantum = 128; |
| + |
| + var sampleRate = renderQuantum * 100; |
| + var renderDuration = 2; |
| + var scheduledSuspendTime = 0; |
| + |
| + // With the sample rate setting above, this ensures suspension time fall |
| + // in to the render quantum boundary. |
| + var suspendInterval = 0.25; |
| + |
| + context = new OfflineAudioContext(1, sampleRate * renderDuration, sampleRate); |
| + |
| + function onSuspended() { |
| + Should('context.currentTime', context.currentTime) |
| + .beEqualTo(scheduledSuspendTime); |
| + |
| + scheduledSuspendTime = context.currentTime + suspendInterval; |
| + |
| + // When |scheduledSuspendTime >= renderDuration|, suspending the context |
| + // will reject the promise. |
| + if (scheduledSuspendTime < renderDuration) { |
| + context.suspend(scheduledSuspendTime).then(onSuspended); |
| + } else { |
| + Should('context.suspend(scheduledSuspendTime)', |
| + context.suspend(scheduledSuspendTime)).beRejected(); |
| + } |
| + |
| + context.resume(); |
| + } |
| + |
| + // Initiate the suspension loop. |
| + context.suspend(scheduledSuspendTime).then(onSuspended); |
| + context.startRendering().then(function () { |
| + Should('context.state', context.state).beEqualTo('closed'); |
| + finishJSTest(); |
| + }); |
|
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.
|
| + |
| + successfullyParsed = true; |
| + </script> |
| + |
| + </body> |
| +</html> |
