diff options
| 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 /testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.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 'testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.html')
| -rw-r--r-- | testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.html | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.html b/testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.html new file mode 100644 index 0000000000..96c2eb0658 --- /dev/null +++ b/testing/web-platform/tests/webaudio/the-audio-api/processing-model/feedback-delay-time.html @@ -0,0 +1,42 @@ +<!DOCTYPE html> +<html class="a"> + <head> + <title>Feedback cycle with delay in audio node graph</title> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + </head> + <body> + <script> + function doTest() { + var off = new OfflineAudioContext(1, 512, 48000); + var b = off.createBuffer(1, 1, 48000); + b.getChannelData(0)[0] = 1; + var impulse = new AudioBufferSourceNode(off, {buffer: b}); + impulse.start(0); + var delay = new DelayNode(off, {delayTime: 128 / 48000}); + var fb = new GainNode(off); + impulse.connect(fb).connect(delay).connect(fb).connect(off.destination); + var samples; + return off.startRendering().then((b) => { + return Promise.resolve(b.getChannelData(0)); + }); + } + + promise_test(() => { + return doTest().then(samples => { + for (var i = 0; i < samples.length; i++) { + if ((i % 128) != 0) { + assert_equals( + samples[i], 0.0, + 'Non-silent audio found in between delayed impulses'); + } else { + assert_equals( + samples[i], 1.0, + 'Silent audio found instead of a delayed impulse'); + } + } + }); + }, 'Test that a DelayNode allows a feedback loop of a single rendering quantum'); + </script> + </body> +</html> |