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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html')
-rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html b/testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html new file mode 100644 index 0000000000..e37a98c386 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-convolvernode-interface/transferred-buffer-output.html @@ -0,0 +1,107 @@ +<!doctype html> +<html> + <head> + <title> + Test Convolver Output with Transferred Buffer + </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> + // Arbitrary sample rate. + const sampleRate = 16000; + + // Number of frames to render. Just need to have at least 2 render + // quanta. + const lengthInFrames = 10 * RENDER_QUANTUM_FRAMES; + + let audit = Audit.createTaskRunner(); + + // Buffer to use for the impulse response of a ConvolverNode. + let impulseBuffer; + + // This sets up a worker to receive one channel of an AudioBuffer. + function setUpWorkerForTest() { + impulseBuffer = new AudioBuffer({ + numberOfChannels: 2, + length: 2 * RENDER_QUANTUM_FRAMES, + sampleRate: sampleRate + }); + + // Just fill the buffer with a constant value; the contents shouldn't + // matter for this test since we're transferring one of the channels. + impulseBuffer.getChannelData(0).fill(1); + impulseBuffer.getChannelData(1).fill(2); + + // We're going to transfer channel 0 to the worker, making it + // unavailable for the convolver + let data = impulseBuffer.getChannelData(0).buffer; + + let string = [ + 'onmessage = function(e) {', ' postMessage(\'done\');', '};' + ].join('\n'); + + let blobURL = URL.createObjectURL(new Blob([string])); + let worker = new Worker(blobURL); + worker.onmessage = workerReply; + worker.postMessage(data, [data]); + } + + function workerReply() { + // Worker has received the message. Run the test. + audit.run(); + } + + audit.define( + { + label: 'Test Convolver with transferred buffer', + description: 'Output should be all zeroes' + }, + async (task, should) => { + // Two channels so we can capture the output of the convolver with a + // stereo convolver. + let context = new OfflineAudioContext({ + numberOfChannels: 2, + length: lengthInFrames, + sampleRate: sampleRate + }); + + // Use a simple constant source so we easily check that the + // convolver output is correct. + let source = new ConstantSourceNode(context); + + // Create the convolver with the desired impulse response and + // disable normalization so we can easily check the output. + let conv = new ConvolverNode( + context, {disableNormalization: true, buffer: impulseBuffer}); + + source.connect(conv).connect(context.destination); + + source.start(); + + let renderedBuffer = await context.startRendering(); + + // Get the actual data + let c0 = renderedBuffer.getChannelData(0); + let c1 = renderedBuffer.getChannelData(1); + + // Since one channel was transferred, we must behave as if all were + // transferred. Hence, the output should be all zeroes for both + // channels. + should(c0, `Convolver channel 0 output[0:${c0.length - 1}]`) + .beConstantValueOf(0); + + should(c1, `Convolver channel 1 output[0:${c1.length - 1}]`) + .beConstantValueOf(0); + + task.done(); + }); + + setUpWorkerForTest(); + </script> + </body> +</html> |