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| author | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
|---|---|---|
| committer | Matt A. Tobin <mattatobin@localhost.localdomain> | 2018-02-02 04:16:08 -0500 |
| commit | 5f8de423f190bbb79a62f804151bc24824fa32d8 (patch) | |
| tree | 10027f336435511475e392454359edea8e25895d /dom/media/webaudio/test/test_audioParamExponentialRamp.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_audioParamExponentialRamp.html')
| -rw-r--r-- | dom/media/webaudio/test/test_audioParamExponentialRamp.html | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_audioParamExponentialRamp.html b/dom/media/webaudio/test/test_audioParamExponentialRamp.html new file mode 100644 index 000000000..e1b1c5142 --- /dev/null +++ b/dom/media/webaudio/test/test_audioParamExponentialRamp.html @@ -0,0 +1,54 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test AudioParam.exponentialRampToValue</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"> + +var V0 = 0.1; +var V1 = 0.9; +var T0 = 0; + +var gTest = { + length: 2048, + numberOfChannels: 1, + createGraph: function(context) { + var sourceBuffer = context.createBuffer(1, 2048, context.sampleRate); + for (var i = 0; i < 2048; ++i) { + sourceBuffer.getChannelData(0)[i] = 1; + } + + var source = context.createBufferSource(); + source.buffer = sourceBuffer; + + var gain = context.createGain(); + gain.gain.setValueAtTime(V0, 0); + gain.gain.exponentialRampToValueAtTime(V1, 2048/context.sampleRate); + + source.connect(gain); + + source.start(0); + return gain; + }, + createExpectedBuffers: function(context) { + var T1 = 2048 / context.sampleRate; + var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); + for (var i = 0; i < 2048; ++i) { + var t = i / context.sampleRate; + expectedBuffer.getChannelData(0)[i] = V0 * Math.pow(V1 / V0, (t - T0) / (T1 - T0)); + } + return expectedBuffer; + }, +}; + +runTest(); + +</script> +</pre> +</body> +</html> |