diff options
| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 09:22:09 +0000 |
| commit | 43a97878ce14b72f0981164f87f2e35e14151312 (patch) | |
| tree | 620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html | |
| parent | Initial commit. (diff) | |
| download | firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip | |
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html')
| -rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html b/testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html new file mode 100644 index 0000000000..45d2c9ad4b --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-waveshapernode-interface/silent-inputs.html @@ -0,0 +1,103 @@ +<!doctype html> +<html> + <head> + <title> + Test Silent Inputs to WaveShaperNode + </title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="/webaudio/resources/audit-util.js"></script> + <script src="/webaudio/resources/audit.js"></script> + </head> + <body> + <script id="layout-test-code"> + let audit = Audit.createTaskRunner(); + let sampleRate = 16000; + + // Identity curve for the wave shaper: the input value is mapped directly + // to the output value. + let identityCurve = [-1, 0, 1]; + let nonZeroCurve = [0.5, 0.5, 0.5]; + + audit.define( + { + label: 'test-0', + description: 'curve output is non-zero for silent inputs' + }, + (task, should) => { + let {context, source, shaper} = + setupGraph(nonZeroCurve, sampleRate, sampleRate); + + source.offset.setValueAtTime(0, 0); + + context.startRendering() + .then(audioBuffer => { + should( + audioBuffer.getChannelData(0), + 'WaveShaper with silent inputs and curve ' + + JSON.stringify(shaper.curve)) + .beConstantValueOf(0.5); + }) + .then(() => task.done()); + }); + + audit.define( + { + label: 'test-1', + description: '2x curve output is non-zero for silent inputs' + }, + (task, should) => { + let {context, source, shaper} = + setupGraph(nonZeroCurve, sampleRate, sampleRate); + + source.offset.setValueAtTime(0, 0); + shaper.overSample = '2x'; + + context.startRendering() + .then(audioBuffer => { + should( + audioBuffer.getChannelData(0), + 'WaveShaper with ' + shaper.overSample + + ' oversample, silent inputs, and curve ' + + JSON.stringify(shaper.curve)) + .beConstantValueOf(0.5); + }) + .then(() => task.done()); + }); + + audit.define( + { + label: 'test-2', + description: 'curve output is non-zero for no inputs' + }, + (task, should) => { + let {context, source, shaper} = + setupGraph(nonZeroCurve, sampleRate, sampleRate); + + source.disconnect(); + + context.startRendering() + .then(audioBuffer => { + should( + audioBuffer.getChannelData(0), + 'WaveShaper with no inputs and curve ' + + JSON.stringify(shaper.curve)) + .beConstantValueOf(0.5); + }) + .then(() => task.done()); + }); + + function setupGraph(curve, testFrames, sampleRate) { + let context = new OfflineAudioContext(1, testFrames, sampleRate); + let source = new ConstantSourceNode(context); + let shaper = new WaveShaperNode(context, {curve: curve}); + + source.connect(shaper).connect(context.destination); + + return {context: context, source: source, shaper: shaper}; + } + + audit.run(); + </script> + </body> +</html> |