1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_delayNodeAtMax.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,53 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test DelayNode with maxDelayTime delay - bug 890528</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 src="webaudio.js" type="text/javascript"></script>
1.14 +<script class="testbody" type="text/javascript">
1.15 +
1.16 +const signalLength = 2048;
1.17 +const delayLength = 1000; // Not on a block boundary
1.18 +const outputLength = 4096 // > signalLength + 2 * delayLength;
1.19 +
1.20 +function applySignal(buffer, offset) {
1.21 + for (var i = 0; i < signalLength; ++i) {
1.22 + buffer.getChannelData(0)[offset + i] = Math.cos(Math.PI * i / signalLength);
1.23 + }
1.24 +}
1.25 +
1.26 +var gTest = {
1.27 + numberOfChannels: 1,
1.28 + createGraph: function(context) {
1.29 + var buffer = context.createBuffer(1, signalLength, context.sampleRate);
1.30 + applySignal(buffer, 0);
1.31 +
1.32 + var source = context.createBufferSource();
1.33 + source.buffer = buffer;
1.34 +
1.35 + const delayTime = delayLength / context.sampleRate;
1.36 + var delay = context.createDelay(delayTime);
1.37 + delay.delayTime.value = delayTime;
1.38 +
1.39 + source.connect(delay);
1.40 +
1.41 + source.start(0);
1.42 + return delay;
1.43 + },
1.44 + createExpectedBuffers: function(context) {
1.45 + var expectedBuffer = context.createBuffer(1, outputLength, context.sampleRate);
1.46 + applySignal(expectedBuffer, delayLength);
1.47 + return expectedBuffer;
1.48 + },
1.49 +};
1.50 +
1.51 +runTest();
1.52 +
1.53 +</script>
1.54 +</pre>
1.55 +</body>
1.56 +</html>
