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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_pannerNodeAtZeroDistance.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_pannerNodeAtZeroDistance.html')
| -rw-r--r-- | dom/media/webaudio/test/test_pannerNodeAtZeroDistance.html | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_pannerNodeAtZeroDistance.html b/dom/media/webaudio/test/test_pannerNodeAtZeroDistance.html new file mode 100644 index 0000000000..a0c20f01fe --- /dev/null +++ b/dom/media/webaudio/test/test_pannerNodeAtZeroDistance.html @@ -0,0 +1,149 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test PannerNode produces output even when the even when the distance is from the listener is zero</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"> + +var BUF_SIZE = 128; + +var types = [ + "equalpower", + "HRTF" +] + +var finished = 2 * types.length; + +function finish() { + if (!--finished) { + SimpleTest.finish(); + } +} + +function testMono(type) { + var ac = new OfflineAudioContext(1, BUF_SIZE, 44100); + + // A sine to be used to fill the buffers + function sine(t) { + return Math.sin(440 * 2 * Math.PI * t / ac.sampleRate); + } + + var monoBuffer = ac.createBuffer(1, BUF_SIZE, ac.sampleRate); + for (var i = 0; i < BUF_SIZE; ++i) { + monoBuffer.getChannelData(0)[i] = sine(i); + } + + var monoSource = ac.createBufferSource(); + monoSource.buffer = monoBuffer; + monoSource.start(0); + + var panner = ac.createPanner(); + panner.distanceModel = "linear"; + panner.refDistance = 1; + panner.positionX.value = 0; + panner.positionY.value = 0; + panner.positionZ.value = 0; + monoSource.connect(panner); + + var panner2 = ac.createPanner(); + panner2.distanceModel = "inverse"; + panner2.refDistance = 1; + panner2.positionX.value = 0; + panner2.positionY.value = 0; + panner2.positionZ.value = 0; + panner.connect(panner2); + + var panner3 = ac.createPanner(); + panner3.distanceModel = "exponential"; + panner3.refDistance = 1; + panner3.positionX.value = 0; + panner3.positionY.value = 0; + panner3.positionZ.value = 0; + panner2.connect(panner3); + + panner3.connect(ac.destination); + + // Use the input buffer to compare the output. According to the spec, + // mono input at zero distance will apply gain = cos(0.5 * Math.PI / 2) + // https://webaudio.github.io/web-audio-api/#Spatialzation-equal-power-panning + const gain = Math.cos(0.5 * Math.PI / 2); + for (var i = 0; i < BUF_SIZE; ++i) { + monoBuffer.getChannelData(0)[i] = gain * monoBuffer.getChannelData(0)[i]; + } + + ac.startRendering().then(function(buffer) { + compareBuffers(buffer, monoBuffer); + finish(); + }); +} + +function testStereo(type) { + var ac = new OfflineAudioContext(2, BUF_SIZE, 44100); + + // A sine to be used to fill the buffers + function sine(t) { + return Math.sin(440 * 2 * Math.PI * t / ac.sampleRate); + } + + var stereoBuffer = ac.createBuffer(2, BUF_SIZE, ac.sampleRate); + for (var i = 0; i < BUF_SIZE; ++i) { + stereoBuffer.getChannelData(0)[i] = sine(i); + stereoBuffer.getChannelData(1)[i] = sine(i); + } + + var stereoSource = ac.createBufferSource(); + stereoSource.buffer = stereoBuffer; + stereoSource.start(0); + + var panner = ac.createPanner(); + panner.distanceModel = "linear"; + panner.refDistance = 1; + panner.positionX.value = 0; + panner.positionY.value = 0; + panner.positionZ.value = 0; + stereoSource.connect(panner); + + var panner2 = ac.createPanner(); + panner2.distanceModel = "inverse"; + panner2.refDistance = 1; + panner2.positionX.value = 0; + panner2.positionY.value = 0; + panner2.positionZ.value = 0; + panner.connect(panner2); + + var panner3 = ac.createPanner(); + panner3.distanceModel = "exponential"; + panner3.refDistance = 1; + panner3.positionX.value = 0; + panner3.positionY.value = 0; + panner3.positionZ.value = 0; + panner2.connect(panner3); + + panner3.connect(ac.destination); + + ac.startRendering().then(function(buffer) { + compareBuffers(buffer, stereoBuffer); + finish(); + }); +} + +function test(type) { + testMono(type); + testStereo(type); +} + +addLoadEvent(function() { + types.forEach(test); +}); + +SimpleTest.waitForExplicitFinish(); + +</script> +</pre> +</body> +</html> |