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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-audioparam-interface/retrospective-setTargetAtTime.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-audioparam-interface/retrospective-setTargetAtTime.html')
-rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-setTargetAtTime.html | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-setTargetAtTime.html b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-setTargetAtTime.html new file mode 100644 index 0000000000..41a37bdb91 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/the-audioparam-interface/retrospective-setTargetAtTime.html @@ -0,0 +1,80 @@ +<!doctype html> +<meta charset=utf-8> +<html> + <head> + <title>Test setTargetAtTime with start time in the past</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> + let audit = Audit.createTaskRunner(); + + audit.define( + { + label: 'test', + description: 'Test setTargetAtTime with start time in the past' + }, + (task, should) => { + // Use a sample rate that is a power of two to eliminate round-off + // in computing the currentTime. + let context = new OfflineAudioContext(2, 16384, 16384); + let source = new ConstantSourceNode(context); + + // Suspend the context at this frame so we can synchronously set up + // automations. + const suspendFrame = 128; + + let test = new GainNode(context); + let reference = new GainNode(context); + + source.connect(test); + source.connect(reference); + + let merger = new ChannelMergerNode( + context, {numberOfInputs: context.destination.channelCount}); + test.connect(merger, 0, 0); + reference.connect(merger, 0, 1); + + merger.connect(context.destination); + + context.suspend(suspendFrame / context.sampleRate) + .then(() => { + // Call setTargetAtTime with a time in the past + test.gain.setTargetAtTime(0.1, 0.5*context.currentTime, 0.1); + reference.gain.setTargetAtTime(0.1, context.currentTime, 0.1); + }) + .then(() => context.resume()); + + source.start(); + + context.startRendering() + .then(resultBuffer => { + let testValue = resultBuffer.getChannelData(0); + let referenceValue = resultBuffer.getChannelData(1); + + // Until the suspendFrame, both should be exactly equal to 1. + should( + testValue.slice(0, suspendFrame), + `Test[0:${suspendFrame - 1}]`) + .beConstantValueOf(1); + should( + referenceValue.slice(0, suspendFrame), + `Reference[0:${suspendFrame - 1}]`) + .beConstantValueOf(1); + + // After the suspendFrame, both should be equal (and not + // constant) + should( + testValue.slice(suspendFrame), `Test[${suspendFrame}:]`) + .beEqualToArray(referenceValue.slice(suspendFrame)); + }) + .then(() => task.done()); + }); + + audit.run(); + </script> + </body> +</html> |