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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html')
| -rw-r--r-- | dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html b/dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html new file mode 100644 index 000000000..1cfb51ce8 --- /dev/null +++ b/dom/media/webaudio/test/test_convolverNodeFiniteInfluence.html @@ -0,0 +1,44 @@ +<!DOCTYPE html> +<title>Test convolution effect has finite duration</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script> +promise_test(function() { + + const responseLength = 256; + // Accept an influence period of twice the responseLength to accept FFT + // implementations. + const tolerancePeriod = 2 * responseLength; + const totalSize = tolerancePeriod + responseLength; + + var context = new OfflineAudioContext(1, totalSize, 48000); + + var responseBuffer = + context.createBuffer(1, responseLength, context.sampleRate); + var responseChannelData = responseBuffer.getChannelData(0); + responseChannelData[0] = 1; + responseChannelData[responseLength - 1] = 1; + var convolver = context.createConvolver(); + convolver.buffer = responseBuffer; + convolver.connect(context.destination); + + var sourceBuffer = context.createBuffer(1, totalSize, context.sampleRate); + sourceBuffer.getChannelData(0)[0] = NaN; + var source = context.createBufferSource(); + source.buffer = sourceBuffer; + source.connect(convolver); + source.start(); + + return context.startRendering(). + then((buffer) => { + var convolverOutput = buffer.getChannelData(0); + // There should be no non-zeros after the tolerance period. + var testIndex = tolerancePeriod; + for (; + testIndex < buffer.length - 1 && convolverOutput[testIndex] == 0; + ++testIndex) { + } + assert_equals(convolverOutput[testIndex], 0, "output at " + testIndex); + }); +}); +</script> |