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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
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| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/media/webaudio/test/test_convolverNodeWithGain.html | |
| parent | 49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff) | |
| download | UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.gz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.lz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.tar.xz UXP-5f8de423f190bbb79a62f804151bc24824fa32d8.zip | |
Add m-esr52 at 52.6.0
Diffstat (limited to 'dom/media/webaudio/test/test_convolverNodeWithGain.html')
| -rw-r--r-- | dom/media/webaudio/test/test_convolverNodeWithGain.html | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_convolverNodeWithGain.html b/dom/media/webaudio/test/test_convolverNodeWithGain.html new file mode 100644 index 000000000..7bbe24089 --- /dev/null +++ b/dom/media/webaudio/test/test_convolverNodeWithGain.html @@ -0,0 +1,62 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test ConvolverNode after a GainNode - Bug 891254 </title> + <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> +</head> +<body> +<pre id="test"> +<script src="webaudio.js" type="text/javascript"></script> +<script class="testbody" type="text/javascript"> + +const signalLength = 2048; +const responseLength = 100; +const outputLength = 4096; // > signalLength + responseLength + +var gTest = { + length: outputLength, + numberOfChannels: 1, + createGraph: function(context) { + var buffer = context.createBuffer(1, signalLength, context.sampleRate); + for (var i = 0; i < signalLength; ++i) { + buffer.getChannelData(0)[i] = Math.sin(2 * Math.PI * i / signalLength); + } + + var source = context.createBufferSource(); + source.buffer = buffer; + source.start(0); + + var response = context.createBuffer(1, responseLength, context.sampleRate); + for (var i = 0; i < responseLength; ++i) { + response.getChannelData(0)[i] = i / responseLength; + } + + var gain = context.createGain(); + gain.gain.value = -1; + source.connect(gain); + + var convolver1 = context.createConvolver(); + convolver1.buffer = response; + gain.connect(convolver1); + + var convolver2 = context.createConvolver(); + convolver2.buffer = response; + source.connect(convolver2); + + // The output of convolver1 should be the inverse of convolver2, so blend + // them together and expect silence. + var blend = context.createGain(); + convolver1.connect(blend); + convolver2.connect(blend); + + return blend; + }, +}; + +runTest(); + +</script> +</pre> +</body> +</html> |