1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_bug956489.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,55 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test when and currentTime are in the same coordinate system</title>
1.8 + <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
1.9 + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
1.10 +</head>
1.11 +<body>
1.12 +<pre id="test">
1.13 +<script class="testbody" type="text/javascript">
1.14 +
1.15 +SimpleTest.waitForExplicitFinish();
1.16 +addLoadEvent(function() {
1.17 + var freq = 330;
1.18 +
1.19 + var context = new AudioContext();
1.20 +
1.21 + var buffer = context.createBuffer(1, context.sampleRate / freq, context.sampleRate);
1.22 + for (var i = 0; i < buffer.length; ++i) {
1.23 + buffer.getChannelData(0)[i] = Math.sin(2 * Math.PI * i / buffer.length);
1.24 + }
1.25 +
1.26 + var source = context.createBufferSource();
1.27 + source.loop = true;
1.28 + source.buffer = buffer;
1.29 +
1.30 + setTimeout(function () {
1.31 + var finished = false;
1.32 +
1.33 + source.start(context.currentTime);
1.34 + var processor = context.createScriptProcessor(256, 1, 1);
1.35 + processor.onaudioprocess = function (e) {
1.36 + if (finished) return;
1.37 + var c = e.inputBuffer.getChannelData(0);
1.38 + var result = true;
1.39 +
1.40 + for (var i = 0; i < buffer.length; ++i) {
1.41 + if (Math.abs(c[i] - buffer.getChannelData(0)[i]) > 1e-9) {
1.42 + result = false;
1.43 + break;
1.44 + }
1.45 + }
1.46 + finished = true;
1.47 + ok(result, "when and currentTime are in same time coordinate system");
1.48 + SimpleTest.finish();
1.49 + }
1.50 + processor.connect(context.destination);
1.51 + source.connect(processor);
1.52 + }, 500);
1.53 +});
1.54 +
1.55 +</script>
1.56 +</pre>
1.57 +</body>
1.58 +</html>
