| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| Test AudioWorkletProcessorState in AudioWorkletNode |
| </title> |
| <script src="../../resources/testharness.js"></script> |
| <script src="../../resources/testharnessreport.js"></script> |
| <script src="../../../webaudio-resources/audit.js"></script> |
| <script src="audio-worklet-common.js"></script> |
| </head> |
| <body> |
| <script id="layout-test-code"> |
| // TODO(hongchan): remove this assertion when AudioWorklet shipped. |
| assertAudioWorklet(); |
| |
| let audit = Audit.createTaskRunner(); |
| |
| const sampleRate = 48000; |
| const renderLength = sampleRate * 0.1; |
| |
| // Test "pending", "running" and "stopped" state transition. |
| audit.define('pending-running-stopped', |
| (task, should) => { |
| let context = new OfflineAudioContext(1, renderLength, sampleRate); |
| context.audioWorklet.addModule('state-processor.js').then(() => { |
| let timedWorkletNode = new AudioWorkletNode(context, 'timed'); |
| |
| // The construction of associated processor has not been |
| // completed. In this state, no audio processing can happen and |
| // all messages to the processor will be queued. |
| should(timedWorkletNode.processorState, |
| 'Checking the processor state upon the constructor call') |
| .beEqualTo('pending'); |
| |
| timedWorkletNode.connect(context.destination); |
| |
| // Checks the handler of |onprocessorstatechange|. Because the |
| // processor script is correct, the |running| state change MUST |
| // be fired. |
| let isFirstPhase = true; |
| timedWorkletNode.onprocessorstatechange = () => { |
| // The first phase should be "running". |
| if (isFirstPhase) { |
| should(timedWorkletNode.processorState, |
| 'Checking the processor state upon ' + |
| 'processorstatechange event') |
| .beEqualTo('running'); |
| isFirstPhase = false; |
| } else { |
| // The second phase in this test must be "stopped". |
| should(timedWorkletNode.processorState, |
| 'Checking the processor state after ' + |
| 'processor stopped processing') |
| .beEqualTo('stopped'); |
| task.done(); |
| } |
| }; |
| |
| context.startRendering(); |
| }); |
| }); |
| |
| // Test the error state caused by the failure of processor constructor. |
| audit.define('constructor-error', |
| (task, should) => { |
| let context = new OfflineAudioContext(1, renderLength, sampleRate); |
| context.audioWorklet.addModule('state-processor.js').then(() => { |
| let constructorErrorWorkletNode = |
| new AudioWorkletNode(context, 'constructor-error'); |
| should(constructorErrorWorkletNode.processorState, |
| 'constructorErrorWorkletNode.processorState after ' + |
| 'its construction') |
| .beEqualTo('pending'); |
| constructorErrorWorkletNode.onprocessorstatechange = () => { |
| should(constructorErrorWorkletNode.processorState, |
| 'workletNode.processorState upon processorstatechange ' + |
| 'event after the failure from processor.constructor()') |
| .beEqualTo('error'); |
| task.done(); |
| }; |
| }); |
| }); |
| |
| // Test the error state caused by the failure of processor's process() |
| // function. |
| audit.define('process-error', |
| (task, should) => { |
| let context = new OfflineAudioContext(1, renderLength, sampleRate); |
| context.audioWorklet.addModule('state-processor.js').then(() => { |
| let processErrorWorkletNode = |
| new AudioWorkletNode(context, 'process-error'); |
| should(processErrorWorkletNode.processorState, |
| 'processErrorWorkletNode.processorState after ' + |
| 'its construction') |
| .beEqualTo('pending'); |
| |
| processErrorWorkletNode.connect(context.destination); |
| |
| let isFirstPhase = true; |
| processErrorWorkletNode.onprocessorstatechange = () => { |
| if (isFirstPhase) { |
| // Ignore the first state change event, which is "running"; |
| isFirstPhase = false; |
| } else { |
| should(processErrorWorkletNode.processorState, |
| 'workletNode.processorState upon processorstatechange ' + |
| 'event after the failure from processor.process()') |
| .beEqualTo('error'); |
| task.done(); |
| } |
| }; |
| |
| context.startRendering(); |
| }); |
| }); |
| |
| audit.run(); |
| </script> |
| </body> |
| </html> |
