| <!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 event handler callback from OfflineAudioContext.resume() and OfflineAudioContext.suspend().'); |
| window.jsTestIsAsync = true; |
| |
| var context; |
| var renderQuantum = 128; |
| |
| // The sample rate is multiple of the rendering quantum, so suspension |
| // times in the test will fall on the render quantum boundary. Although |
| // this is not necessary, it is easier to understand the test. |
| 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; |
| |
| function runTest() { |
| context = new OfflineAudioContext(1, sampleRate * renderDuration, sampleRate); |
| |
| context.onstatechange = function () { |
| if (context.state === 'suspended' && context.currentTime === scheduledSuspendTime) { |
| |
| testPassed('onstatechange event handler: context is suspended at ' + |
| scheduledSuspendTime + ' second(s).'); |
| |
| scheduledSuspendTime = context.currentTime + suspendInterval; |
| |
| // Scheduling a suspend before the render duration should pass. |
| if (scheduledSuspendTime < renderDuration) { |
| context.suspend(scheduledSuspendTime); |
| testPassed('A new suspend has been scheduled at ' + |
| scheduledSuspendTime + ' second(s).'); |
| } |
| |
| // Scheduling a suspend exactly at the render duration should be |
| // rejected. |
| if (scheduledSuspendTime === renderDuration) { |
| Should('Scheduling at ' + renderDuration + ' seconds', |
| context.suspend(scheduledSuspendTime)).beRejected(); |
| } |
| |
| context.resume(); |
| } |
| }; |
| |
| // This test is for verifying all the event handlers on OAC and that is |
| // why 'oncomplete' is used here. |
| context.oncomplete = function () { |
| Should('oncomplete event handler: context.state', context.state).beEqualTo('closed'); |
| finishJSTest(); |
| }; |
| |
| // Schedule the first suspension. |
| context.suspend(scheduledSuspendTime); |
| testPassed('A new suspend has been scheduled at ' + scheduledSuspendTime + ' second(s).'); |
| |
| context.startRendering(); |
| } |
| |
| runTest(); |
| successfullyParsed = true; |
| </script> |
| |
| </body> |
| </html> |
