| <!DOCTYPE html> |
| <html> |
| <head> |
| <title> |
| Test the construction of AudioWorkletNode with real-time context |
| </title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/webaudio/resources/audit.js"></script> |
| </head> |
| <body> |
| <script id="layout-test-code"> |
| const audit = Audit.createTaskRunner(); |
| const context = new AudioContext(); |
| |
| setup(function () { |
| context.audioWorklet.addModule( |
| 'processors/channel-count-processor.js').then(() => audit.run()); |
| |
| // Test if the output channe count dynamically changes if the input |
| // and output is 1. |
| audit.define( |
| {label: 'Dynamically change the channel count to if unspecified.'}, |
| (task, should) => { |
| // Use arbitrary parameters for the test. |
| const buffer = new AudioBuffer({ |
| numberOfChannels: 17, |
| length: 1, |
| sampleRate: context.sampleRate, |
| }); |
| const source = new AudioBufferSourceNode(context); |
| source.buffer = buffer; |
| |
| const node = new AudioWorkletNode(context, 'channel-count', { |
| numberOfInputs: 1, |
| numberOfOutputs: 1, |
| }); |
| |
| node.port.onmessage = (message) => { |
| const expected = message.data; |
| should(expected.outputChannel, |
| 'The expected output channel count').beEqualTo(17); |
| task.done(); |
| }; |
| |
| // We need to make an actual connection becasue the channel count |
| // change happen when the rendering starts. It is to test if the |
| // channel count adapts to the upstream node correctly. |
| source.connect(node).connect(context.destination); |
| source.start(); |
| }); |
| |
| // Test if outputChannelCount is honored as expected even if the input |
| // and output is 1. |
| audit.define( |
| {label: 'Givien outputChannelCount must be honored.'}, |
| (task, should) => { |
| const node = new AudioWorkletNode( |
| context, 'channel-count', { |
| numberOfInputs: 1, |
| numberOfOutputs: 1, |
| outputChannelCount: [2], |
| }); |
| |
| node.port.onmessage = (message) => { |
| const expected = message.data; |
| should(expected.outputChannel, |
| 'The expected output channel count').beEqualTo(2); |
| task.done(); |
| }; |
| |
| // We need to make an actual connection becasue the channel count |
| // change might happen when the rendering starts. It is to test |
| // if the specified channel count is kept correctly. |
| node.connect(context.destination); |
| }); |
| }); |
| </script> |
| </body> |
| </html> |
