зеркало из https://github.com/mozilla/gecko-dev.git
Bug 1336098 - When the input is silent, AnalyserNode.getFloatFrequencyData should put -Infinity in the buffer. r=pehrsons
This commit is contained in:
Родитель
eba0707fb7
Коммит
0ac29668f5
|
@ -245,7 +245,9 @@ AnalyserNode::GetFloatFrequencyData(const Float32Array& aArray)
|
|||
size_t length = std::min(size_t(aArray.Length()), mOutputBuffer.Length());
|
||||
|
||||
for (size_t i = 0; i < length; ++i) {
|
||||
buffer[i] = WebAudioUtils::ConvertLinearToDecibels(mOutputBuffer[i], mMinDecibels);
|
||||
buffer[i] =
|
||||
WebAudioUtils::ConvertLinearToDecibels(mOutputBuffer[i],
|
||||
-std::numeric_limits<float>::infinity());
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
@ -33,6 +33,7 @@ support-files =
|
|||
[test_analyserNodeOutput.html]
|
||||
[test_analyserNodePassThrough.html]
|
||||
[test_analyserNodeWithGain.html]
|
||||
[test_analyserNodeMinimum.html]
|
||||
[test_AudioBuffer.html]
|
||||
[test_audioBufferSourceNode.html]
|
||||
[test_audioBufferSourceNodeEnded.html]
|
||||
|
|
|
@ -0,0 +1,51 @@
|
|||
<!DOCTYPE HTML>
|
||||
<html>
|
||||
<head>
|
||||
<title>Test AnalyserNode when the input is silent</title>
|
||||
<script type="text/javascript" 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 ac = new AudioContext();
|
||||
var analyser = ac.createAnalyser();
|
||||
var constant = ac.createConstantSource();
|
||||
var sp = ac.createScriptProcessor(2048, 1, 0);
|
||||
|
||||
constant.offset.value = 0.0;
|
||||
|
||||
constant.connect(analyser)
|
||||
.connect(ac.destination);
|
||||
|
||||
constant.connect(sp);
|
||||
|
||||
var buf = new Float32Array(analyser.frequencyBinCount);
|
||||
var iteration_count = 10;
|
||||
sp.onaudioprocess = function() {
|
||||
analyser.getFloatFrequencyData(buf);
|
||||
var correct = true;
|
||||
for (var i = 0; i < buf.length; i++) {
|
||||
correct &= buf[i] == -Infinity;
|
||||
}
|
||||
ok(correct, "silent input process -Infinity in decibel bins");
|
||||
if(!(iteration_count--)) {
|
||||
sp.onaudioprocess = null;
|
||||
constant.stop();
|
||||
ac.close();
|
||||
SimpleTest.finish();
|
||||
}
|
||||
}
|
||||
|
||||
constant.start();
|
||||
});
|
||||
|
||||
</script>
|
||||
</pre>
|
||||
</body>
|
||||
</html>
|
Загрузка…
Ссылка в новой задаче