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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
| commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
| tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /dom/media/webaudio/test/test_analyserNodeWithGain.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webaudio/test/test_analyserNodeWithGain.html')
| -rw-r--r-- | dom/media/webaudio/test/test_analyserNodeWithGain.html | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_analyserNodeWithGain.html b/dom/media/webaudio/test/test_analyserNodeWithGain.html new file mode 100644 index 0000000000..fa0a2caa75 --- /dev/null +++ b/dom/media/webaudio/test/test_analyserNodeWithGain.html @@ -0,0 +1,47 @@ +<!DOCTYPE html> +<title>Test effect of AnalyserNode on GainNode output</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script> +promise_test(function() { + // fftSize <= bufferSize so that the time domain data is full of input after + // processing the buffer. + const fftSize = 32; + const bufferSize = 128; + + var context = new OfflineAudioContext(1, bufferSize, 48000); + + var analyser1 = context.createAnalyser(); + analyser1.fftSize = fftSize; + analyser1.connect(context.destination); + var analyser2 = context.createAnalyser(); + analyser2.fftSize = fftSize; + + var gain = context.createGain(); + gain.gain.value = 2.0; + gain.connect(analyser1); + gain.connect(analyser2); + + // Create a DC input to make getFloatTimeDomainData() output consistent at + // any time. + var buffer = context.createBuffer(1, 1, context.sampleRate); + buffer.getChannelData(0)[0] = 1.0 / gain.gain.value; + var source = context.createBufferSource(); + source.buffer = buffer; + source.loop = true; + source.connect(gain); + source.start(); + + return context.startRendering(). + then(function(buffer) { + assert_equals(buffer.getChannelData(0)[0], 1.0, + "analyser1 output"); + + var data = new Float32Array(1); + analyser1.getFloatTimeDomainData(data); + assert_equals(data[0], 1.0, "analyser1 time domain data"); + analyser2.getFloatTimeDomainData(data); + assert_equals(data[0], 1.0, "analyser2 time domain data"); + }); +}); +</script> |