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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_oscillatorNodeNegativeFrequency.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-upstream.tar.xz firefox-esr-upstream.zip | |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'dom/media/webaudio/test/test_oscillatorNodeNegativeFrequency.html')
| -rw-r--r-- | dom/media/webaudio/test/test_oscillatorNodeNegativeFrequency.html | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_oscillatorNodeNegativeFrequency.html b/dom/media/webaudio/test/test_oscillatorNodeNegativeFrequency.html new file mode 100644 index 0000000000..c46c0fea13 --- /dev/null +++ b/dom/media/webaudio/test/test_oscillatorNodeNegativeFrequency.html @@ -0,0 +1,50 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test the OscillatorNode when the frequency is negative</title> + <script src="/tests/SimpleTest/SimpleTest.js"></script> + <script type="text/javascript" src="webaudio.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<pre id="test"> +<script class="testbody" type="text/javascript"> + +SimpleTest.waitForExplicitFinish(); +addLoadEvent(function() { + + var types = ["sine", + "square", + "sawtooth", + "triangle"]; + + var finished = 0; + function finish() { + if (++finished == types.length) { + SimpleTest.finish(); + } + } + + types.forEach(function(t) { + var context = new OfflineAudioContext(1, 256, 44100); + var osc = context.createOscillator(); + + osc.frequency.value = -440; + osc.type = t; + + osc.connect(context.destination); + osc.start(); + context.startRendering().then(function(buffer) { + var samples = buffer.getChannelData(0); + // This samples the wave form in the middle of the first period, the value + // should be negative. + ok(samples[Math.floor(44100 / 440 / 4)] < 0., "Phase should be inverted when using a " + t + " waveform"); + finish(); + }); + }); +}); + +</script> +</pre> +</body> +</html> |