1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_delayNode.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,74 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test DelayNode</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 +var gTest = {
1.17 + length: 4096,
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 +
1.27 + var delay = context.createDelay();
1.28 +
1.29 + source.buffer = buffer;
1.30 +
1.31 + source.connect(delay);
1.32 +
1.33 + ok(delay.delayTime, "The audioparam member must exist");
1.34 + is(delay.delayTime.value, 0, "Correct initial value");
1.35 + is(delay.delayTime.defaultValue, 0, "Correct default value");
1.36 + delay.delayTime.value = 0.5;
1.37 + is(delay.delayTime.value, 0.5, "Correct initial value");
1.38 + is(delay.delayTime.defaultValue, 0, "Correct default value");
1.39 + is(delay.channelCount, 2, "delay node has 2 input channels by default");
1.40 + is(delay.channelCountMode, "max", "Correct channelCountMode for the delay node");
1.41 + is(delay.channelInterpretation, "speakers", "Correct channelCountInterpretation for the delay node");
1.42 +
1.43 + expectException(function() {
1.44 + context.createDelay(0);
1.45 + }, DOMException.NOT_SUPPORTED_ERR);
1.46 + expectException(function() {
1.47 + context.createDelay(180);
1.48 + }, DOMException.NOT_SUPPORTED_ERR);
1.49 + expectTypeError(function() {
1.50 + context.createDelay(NaN);
1.51 + }, DOMException.NOT_SUPPORTED_ERR);
1.52 + expectException(function() {
1.53 + context.createDelay(-1);
1.54 + }, DOMException.NOT_SUPPORTED_ERR);
1.55 + context.createDelay(1); // should not throw
1.56 +
1.57 + // Delay the source stream by 2048 frames
1.58 + delay.delayTime.value = 2048 / context.sampleRate;
1.59 +
1.60 + source.start(0);
1.61 + return delay;
1.62 + },
1.63 + createExpectedBuffers: function(context) {
1.64 + var expectedBuffer = context.createBuffer(1, 2048 * 2, context.sampleRate);
1.65 + for (var i = 2048; i < 2048 * 2; ++i) {
1.66 + expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * (i - 2048) / context.sampleRate);
1.67 + }
1.68 + return expectedBuffer;
1.69 + },
1.70 +};
1.71 +
1.72 +runTest();
1.73 +
1.74 +</script>
1.75 +</pre>
1.76 +</body>
1.77 +</html>
