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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/media/webaudio/test/test_scriptProcessorNodeChannelCount.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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diff --git a/dom/media/webaudio/test/test_scriptProcessorNodeChannelCount.html b/dom/media/webaudio/test/test_scriptProcessorNodeChannelCount.html
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+<!DOCTYPE HTML>
+<html>
+<head>
+ <title>Test AudioBufferSourceNode</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">
+
+// We do not use our generic graph test framework here because
+// the testing logic here is sort of complicated, and would
+// not be easy to map to OfflineAudioContext, as ScriptProcessorNodes
+// can experience delays.
+
+SimpleTest.waitForExplicitFinish();
+addLoadEvent(function() {
+ var context = new AudioContext();
+ var buffer = context.createBuffer(6, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ for (var j = 0; j < 6; ++j) {
+ buffer.getChannelData(0)[i] = Math.sin(440 * j * Math.PI * i / context.sampleRate);
+ }
+ }
+
+ var monoBuffer = context.createBuffer(1, 2048, context.sampleRate);
+ for (var i = 0; i < 2048; ++i) {
+ monoBuffer.getChannelData(0)[i] = 1;
+ }
+
+ var source = context.createBufferSource();
+
+ var sp = context.createScriptProcessor(2048, 3);
+ expectException(function() { sp.channelCount = 2; },
+ DOMException.NOT_SUPPORTED_ERR);
+ sp.channelCountMode = "explicit";
+ expectException(function() { sp.channelCountMode = "max"; },
+ DOMException.NOT_SUPPORTED_ERR);
+ expectException(function() { sp.channelCountMode = "clamped-max"; },
+ DOMException.NOT_SUPPORTED_ERR);
+ sp.channelInterpretation = "discrete";
+ source.start(0);
+ source.buffer = buffer;
+ source.connect(sp);
+ sp.connect(context.destination);
+
+ var monoSource = context.createBufferSource();
+ monoSource.buffer = monoBuffer;
+ monoSource.connect(sp);
+ monoSource.start(2048 / context.sampleRate);
+
+ sp.onaudioprocess = function(e) {
+ is(e.inputBuffer.numberOfChannels, 3, "Should be correctly down-mixed to three channels");
+ for (var i = 0; i < 3; ++i) {
+ compareChannels(e.inputBuffer.getChannelData(i), buffer.getChannelData(i));
+ }
+
+ // On the next iteration, we'll get a silence buffer
+ sp.onaudioprocess = function(e) {
+ var emptyBuffer = context.createBuffer(1, 2048, context.sampleRate);
+ is(e.inputBuffer.numberOfChannels, 3, "Should be correctly up-mixed to three channels");
+ compareChannels(e.inputBuffer.getChannelData(0), monoBuffer.getChannelData(0));
+ for (var i = 1; i < 3; ++i) {
+ compareChannels(e.inputBuffer.getChannelData(i), emptyBuffer.getChannelData(0));
+ }
+
+ sp.onaudioprocess = null;
+ sp.disconnect(context.destination);
+
+ SimpleTest.finish();
+ };
+ };
+});
+
+</script>
+</pre>
+</body>
+</html>