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| 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-audiobuffersourcenode-interface/note-grain-on-play.html | |
| parent | Initial commit. (diff) | |
| download | firefox-upstream.tar.xz firefox-upstream.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-audiobuffersourcenode-interface/note-grain-on-play.html')
| -rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/note-grain-on-play.html | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/note-grain-on-play.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/note-grain-on-play.html new file mode 100644 index 0000000000..37c4462add --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audiobuffersourcenode-interface/note-grain-on-play.html @@ -0,0 +1,121 @@ +<!DOCTYPE html> +<html> + <head> + <title> + note-grain-on-play.html + </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> + <script src="/webaudio/resources/note-grain-on-testing.js"></script> + </head> + <body> + <div id="description"></div> + <div id="console"></div> + <script id="layout-test-code"> + let audit = Audit.createTaskRunner(); + + // To test noteGrainOn, a single ramp signal is created. + // Various sections of the ramp are rendered by noteGrainOn() at + // different times, and we verify that the actual output + // consists of the correct section of the ramp at the correct + // time. + + let linearRampBuffer; + + // Array of the grain offset used for each ramp played. + let grainOffsetTime = []; + + // Verify the received signal is a ramp from the correct section + // of our ramp signal. + function verifyGrain(renderedData, startFrame, endFrame, grainIndex) { + let grainOffsetFrame = + timeToSampleFrame(grainOffsetTime[grainIndex], sampleRate); + let grainFrameLength = endFrame - startFrame; + let ramp = linearRampBuffer.getChannelData(0); + let isCorrect = true; + + let expected; + let actual; + let frame; + + for (let k = 0; k < grainFrameLength; ++k) { + if (renderedData[startFrame + k] != ramp[grainOffsetFrame + k]) { + expected = ramp[grainOffsetFrame + k]; + actual = renderedData[startFrame + k]; + frame = startFrame + k; + isCorrect = false; + break; + } + } + return { + verified: isCorrect, + expected: expected, + actual: actual, + frame: frame + }; + } + + function checkResult(buffer, should) { + renderedData = buffer.getChannelData(0); + let nSamples = renderedData.length; + + // Number of grains that we found that have incorrect data. + let invalidGrainDataCount = 0; + + let startEndFrames = findStartAndEndSamples(renderedData); + + // Verify the start and stop times. Not strictly needed for + // this test, but it's useful to know that if the ramp data + // appears to be incorrect. + verifyStartAndEndFrames(startEndFrames, should); + + // Loop through each of the rendered grains and check that + // each grain contains our expected ramp. + for (let k = 0; k < startEndFrames.start.length; ++k) { + // Verify that the rendered data matches the expected + // section of our ramp signal. + let result = verifyGrain( + renderedData, startEndFrames.start[k], startEndFrames.end[k], k); + should(result.verified, 'Pulse ' + k + ' contained the expected data') + .beTrue(); + } + should( + invalidGrainDataCount, + 'Number of grains that did not contain the expected data') + .beEqualTo(0); + } + + audit.define( + { + label: 'note-grain-on-play', + description: 'Test noteGrainOn offset rendering' + }, + function(task, should) { + // Create offline audio context. + context = + new OfflineAudioContext(2, sampleRate * renderTime, sampleRate); + + // Create a linear ramp for testing noteGrainOn. + linearRampBuffer = createSignalBuffer(context, function(k) { + // Want the ramp to start + // with 1, not 0. + return k + 1; + }); + + let grainInfo = + playAllGrains(context, linearRampBuffer, numberOfTests); + + grainOffsetTime = grainInfo.grainOffsetTimes; + + context.startRendering().then(function(audioBuffer) { + checkResult(audioBuffer, should); + task.done(); + }); + }); + + audit.run(); + </script> + </body> +</html> |