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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_bug964376.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_bug964376.html')
| -rw-r--r-- | dom/media/webaudio/test/test_bug964376.html | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/dom/media/webaudio/test/test_bug964376.html b/dom/media/webaudio/test/test_bug964376.html new file mode 100644 index 000000000..1d9af1c1e --- /dev/null +++ b/dom/media/webaudio/test/test_bug964376.html @@ -0,0 +1,64 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test repeating audio is not distorted</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"> + +function gcd(a, b) { + if (b === 0) { + return a; + } + return gcd(b, a % b); +} + +var SAMPLE_PLACEMENT = 128; + +var gTest = { + length: 2048, + numberOfChannels: 1, + + createGraph: function(context) { + var freq = Math.round(context.sampleRate / SAMPLE_PLACEMENT); + var dur = context.sampleRate / gcd(freq, context.sampleRate); + var buffer = context.createBuffer(1, dur, context.sampleRate); + + for (var i = 0; i < context.sampleRate; ++i) { + buffer.getChannelData(0)[i] = Math.sin(freq * 2 * Math.PI * i / context.sampleRate); + } + + var source = context.createBufferSource(); + source.buffer = buffer; + source.loop = true; + source.playbackRate.setValueAtTime(0.5, SAMPLE_PLACEMENT / context.sampleRate); + source.start(0); + + return source; + }, + + createExpectedBuffers: function(context) { + var freq = Math.round(context.sampleRate / SAMPLE_PLACEMENT); + var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); + var c = expectedBuffer.getChannelData(0); + for (var i = 0; i < c.length; ++i) { + if (i < SAMPLE_PLACEMENT) { + c[i] = Math.sin(freq * 2 * Math.PI * i / context.sampleRate); + } else { + c[i] = Math.sin(freq / 2 * 2 * Math.PI * (i + SAMPLE_PLACEMENT) / context.sampleRate); + } + } + + return expectedBuffer; + }, +}; + +runTest(); +</script> +</pre> +</body> +</html> |