1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/media/webaudio/test/test_analyserNode.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,91 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<head>
1.7 + <title>Test AnalyserNode</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 +SimpleTest.waitForExplicitFinish();
1.17 +addLoadEvent(function() {
1.18 +
1.19 + var context = new AudioContext();
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 destination = context.destination;
1.26 +
1.27 + var source = context.createBufferSource();
1.28 +
1.29 + var analyser = context.createAnalyser();
1.30 +
1.31 + source.buffer = buffer;
1.32 +
1.33 + source.connect(analyser);
1.34 + analyser.connect(destination);
1.35 +
1.36 + is(analyser.channelCount, 1, "analyser node has 2 input channels by default");
1.37 + is(analyser.channelCountMode, "explicit", "Correct channelCountMode for the analyser node");
1.38 + is(analyser.channelInterpretation, "speakers", "Correct channelCountInterpretation for the analyser node");
1.39 +
1.40 + is(analyser.fftSize, 2048, "Correct default value for fftSize");
1.41 + is(analyser.frequencyBinCount, 1024, "Correct default value for frequencyBinCount");
1.42 + expectException(function() {
1.43 + analyser.fftSize = 0;
1.44 + }, DOMException.INDEX_SIZE_ERR);
1.45 + expectException(function() {
1.46 + analyser.fftSize = 1;
1.47 + }, DOMException.INDEX_SIZE_ERR);
1.48 + expectException(function() {
1.49 + analyser.fftSize = 8;
1.50 + }, DOMException.INDEX_SIZE_ERR);
1.51 + expectException(function() {
1.52 + analyser.fftSize = 100; // non-power of two
1.53 + }, DOMException.INDEX_SIZE_ERR);
1.54 + expectException(function() {
1.55 + analyser.fftSize = 2049;
1.56 + }, DOMException.INDEX_SIZE_ERR);
1.57 + expectException(function() {
1.58 + analyser.fftSize = 4096;
1.59 + }, DOMException.INDEX_SIZE_ERR);
1.60 + analyser.fftSize = 1024;
1.61 + is(analyser.frequencyBinCount, 512, "Correct new value for frequencyBinCount");
1.62 +
1.63 + is(analyser.minDecibels, -100, "Correct default value for minDecibels");
1.64 + is(analyser.maxDecibels, -30, "Correct default value for maxDecibels");
1.65 + expectException(function() {
1.66 + analyser.minDecibels = -30;
1.67 + }, DOMException.INDEX_SIZE_ERR);
1.68 + expectException(function() {
1.69 + analyser.minDecibels = -29;
1.70 + }, DOMException.INDEX_SIZE_ERR);
1.71 + expectException(function() {
1.72 + analyser.maxDecibels = -100;
1.73 + }, DOMException.INDEX_SIZE_ERR);
1.74 + expectException(function() {
1.75 + analyser.maxDecibels = -101;
1.76 + }, DOMException.INDEX_SIZE_ERR);
1.77 +
1.78 + is(analyser.smoothingTimeConstant, 0.8, "Correct default value for smoothingTimeConstant");
1.79 + expectException(function() {
1.80 + analyser.smoothingTimeConstant = -0.1;
1.81 + }, DOMException.INDEX_SIZE_ERR);
1.82 + expectException(function() {
1.83 + analyser.smoothingTimeConstant = 1.1;
1.84 + }, DOMException.INDEX_SIZE_ERR);
1.85 + analyser.smoothingTimeConstant = 0;
1.86 + analyser.smoothingTimeConstant = 1;
1.87 +
1.88 + SimpleTest.finish();
1.89 +});
1.90 +
1.91 +</script>
1.92 +</pre>
1.93 +</body>
1.94 +</html>
