1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_audioBufferSourceNodeLoopStartEnd.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,52 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test AudioBufferSourceNode looping</title>
1.8 + <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
1.9 + <script type="text/javascript" src="webaudio.js"></script>
1.10 + <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
1.11 +</head>
1.12 +<body>
1.13 +<pre id="test">
1.14 +<script class="testbody" type="text/javascript">
1.15 +
1.16 +var gTest = {
1.17 + length: 2048 * 4,
1.18 + numberOfChannels: 1,
1.19 + createGraph: function(context) {
1.20 + var buffer = context.createBuffer(1, 2048, context.sampleRate);
1.21 + for (var i = 0; i < 2048; ++i) {
1.22 + buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
1.23 + }
1.24 +
1.25 + var source = context.createBufferSource();
1.26 + source.buffer = buffer;
1.27 + source.start(0);
1.28 + source.loop = true;
1.29 + source.loopStart = buffer.duration * 0.25;
1.30 + source.loopEnd = buffer.duration * 0.75;
1.31 + return source;
1.32 + },
1.33 + createExpectedBuffers: function(context) {
1.34 + var expectedBuffer = context.createBuffer(1, 2048 * 4, context.sampleRate);
1.35 + for (var i = 0; i < 1536; ++i) {
1.36 + expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
1.37 + }
1.38 + for (var i = 0; i < 6; ++i) {
1.39 + for (var j = 512; j < 1536; ++j) {
1.40 + expectedBuffer.getChannelData(0)[1536 + i * 1024 + j - 512] = Math.sin(440 * 2 * Math.PI * j / context.sampleRate);
1.41 + }
1.42 + }
1.43 + for (var j = 7680; j < 2048 * 4; ++j) {
1.44 + expectedBuffer.getChannelData(0)[j] = Math.sin(440 * 2 * Math.PI * (j - 7168) / context.sampleRate);
1.45 + }
1.46 + return expectedBuffer;
1.47 + },
1.48 +};
1.49 +
1.50 +runTest();
1.51 +
1.52 +</script>
1.53 +</pre>
1.54 +</body>
1.55 +</html>
