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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_analyserScale.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_analyserScale.html')
| -rw-r--r-- | dom/media/webaudio/test/test_analyserScale.html | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_analyserScale.html b/dom/media/webaudio/test/test_analyserScale.html new file mode 100644 index 000000000..3aec8d22b --- /dev/null +++ b/dom/media/webaudio/test/test_analyserScale.html @@ -0,0 +1,59 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test AnalyserNode when the input is scaled </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 context = new AudioContext(); + + var gain = context.createGain(); + var analyser = context.createAnalyser(); + var osc = context.createOscillator(); + + + osc.connect(gain); + gain.connect(analyser); + + osc.start(); + + var array = new Uint8Array(analyser.frequencyBinCount); + + function getAnalyserData() { + gain.gain.setValueAtTime(currentGain, context.currentTime); + analyser.getByteTimeDomainData(array); + var inrange = true; + var max = -1; + for (var i = 0; i < array.length; i++) { + if (array[i] > max) { + max = Math.abs(array[i] - 128); + } + } + if (max <= currentGain * 128) { + ok(true, "Analyser got scaled data for " + currentGain); + currentGain = tests.shift(); + if (currentGain == undefined) { + SimpleTest.finish(); + return; + } + } + requestAnimationFrame(getAnalyserData); + } + + var tests = [1.0, 0.5, 0.0]; + var currentGain = tests.shift(); + requestAnimationFrame(getAnalyserData); +}); + +</script> +</pre> +</body> +</html> |