| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| offlineaudiocontext-suspend-resume-eventhandler.html |
| </title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="../resources/audit-util.js"></script> |
| <script src="../resources/audit.js"></script> |
| </head> |
| <body> |
| <script id="layout-test-code"> |
| let audit = Audit.createTaskRunner(); |
| |
| let context; |
| let 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. |
| let sampleRate = renderQuantum * 100; |
| |
| let renderDuration = 2; |
| let scheduledSuspendTime = 0; |
| |
| // With the sample rate setting above, this ensures suspension time fall |
| // in to the render quantum boundary. |
| let suspendInterval = 0.25; |
| |
| audit.define( |
| { |
| label: 'test', |
| description: 'Test event handler from resume() and suspend()' |
| }, |
| (task, should) => { |
| context = new OfflineAudioContext( |
| 1, sampleRate * renderDuration, sampleRate); |
| |
| context.onstatechange = function() { |
| if (context.state === 'suspended' && |
| context.currentTime === scheduledSuspendTime) { |
| should( |
| context.state === 'suspended' && |
| context.currentTime === scheduledSuspendTime, |
| 'onstatechange event handler: context is suspended at ' + |
| scheduledSuspendTime + ' second(s)') |
| .beTrue(); |
| scheduledSuspendTime = context.currentTime + suspendInterval; |
| |
| // Scheduling a suspend before the render duration should pass. |
| if (scheduledSuspendTime < renderDuration) { |
| should( |
| () => context.suspend(scheduledSuspendTime), |
| 'Scheduling a new suspend at ' + scheduledSuspendTime + |
| ' second(s)') |
| .notThrow(); |
| ; |
| } |
| |
| // Scheduling a suspend exactly at the render duration should be |
| // rejected. |
| if (scheduledSuspendTime === renderDuration) { |
| should( |
| context.suspend(scheduledSuspendTime), |
| 'Scheduling at ' + renderDuration + ' seconds') |
| .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(context.state, 'oncomplete event handler: context.state') |
| .beEqualTo('closed'); |
| task.done(); |
| }; |
| |
| // Schedule the first suspension. |
| should( |
| () => context.suspend(scheduledSuspendTime), |
| 'A new suspend has been scheduled at ' + scheduledSuspendTime + |
| ' second(s)') |
| .notThrow(); |
| ; |
| |
| context.startRendering(); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
