From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" <mattatobin@localhost.localdomain> Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- .../test/test_audioBufferSourceNodeOffset.html | 55 ++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 dom/media/webaudio/test/test_audioBufferSourceNodeOffset.html (limited to 'dom/media/webaudio/test/test_audioBufferSourceNodeOffset.html') diff --git a/dom/media/webaudio/test/test_audioBufferSourceNodeOffset.html b/dom/media/webaudio/test/test_audioBufferSourceNodeOffset.html new file mode 100644 index 000000000..b7a16634e --- /dev/null +++ b/dom/media/webaudio/test/test_audioBufferSourceNodeOffset.html @@ -0,0 +1,55 @@ +<!DOCTYPE HTML> +<html> +<head> + <title>Test the offset property on AudioBufferSourceNode</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 fuzz = 0.3; + +if (navigator.platform.startsWith("Mac")) { + // bug 895720 + fuzz = 0.6; +} + +SimpleTest.waitForExplicitFinish(); +addLoadEvent(function() { + var samplesFromSource = 0; + var context = new AudioContext(); + var sp = context.createScriptProcessor(256); + + sp.onaudioprocess = function(e) { + samplesFromSource += e.inputBuffer.length; + } + + var buffer = context.createBuffer(1, context.sampleRate, context.sampleRate); + for (var i = 0; i < context.sampleRate; ++i) { + buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); + } + + var source = context.createBufferSource(); + + source.onended = function(e) { + // The timing at which the audioprocess and ended listeners are called can + // change, hence the fuzzy equal here. + var errorRatio = samplesFromSource / (0.5 * context.sampleRate); + ok(errorRatio > (1.0 - fuzz) && errorRatio < (1.0 + fuzz), + "Correct number of samples received (expected: " + + (0.5 * context.sampleRate) + ", actual: " + samplesFromSource + ")."); + SimpleTest.finish(); + }; + + source.buffer = buffer; + source.connect(sp); + source.start(0, 0.5); +}); + +</script> +</pre> +</body> +</html> -- cgit v1.2.3