content/media/webaudio/test/test_analyserNode.html@44a2da4a2ab2
content/media/webaudio/test/test_analyserNode.html
Fri, 16 Jan 2015 04:50:19 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Fri, 16 Jan 2015 04:50:19 +0100
- branch
- TOR_BUG_9701
- changeset 13
- 44a2da4a2ab2
- permissions
- -rw-r--r--
Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32
1 <!DOCTYPE HTML>
2 <html>
3 <head>
4 <title>Test AnalyserNode</title>
5 <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
6 <script type="text/javascript" src="webaudio.js"></script>
7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
8 </head>
9 <body>
10 <pre id="test">
11 <script class="testbody" type="text/javascript">
13 SimpleTest.waitForExplicitFinish();
14 addLoadEvent(function() {
16 var context = new AudioContext();
17 var buffer = context.createBuffer(1, 2048, context.sampleRate);
18 for (var i = 0; i < 2048; ++i) {
19 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);
20 }
22 var destination = context.destination;
24 var source = context.createBufferSource();
26 var analyser = context.createAnalyser();
28 source.buffer = buffer;
30 source.connect(analyser);
31 analyser.connect(destination);
33 is(analyser.channelCount, 1, "analyser node has 2 input channels by default");
34 is(analyser.channelCountMode, "explicit", "Correct channelCountMode for the analyser node");
35 is(analyser.channelInterpretation, "speakers", "Correct channelCountInterpretation for the analyser node");
37 is(analyser.fftSize, 2048, "Correct default value for fftSize");
38 is(analyser.frequencyBinCount, 1024, "Correct default value for frequencyBinCount");
39 expectException(function() {
40 analyser.fftSize = 0;
41 }, DOMException.INDEX_SIZE_ERR);
42 expectException(function() {
43 analyser.fftSize = 1;
44 }, DOMException.INDEX_SIZE_ERR);
45 expectException(function() {
46 analyser.fftSize = 8;
47 }, DOMException.INDEX_SIZE_ERR);
48 expectException(function() {
49 analyser.fftSize = 100; // non-power of two
50 }, DOMException.INDEX_SIZE_ERR);
51 expectException(function() {
52 analyser.fftSize = 2049;
53 }, DOMException.INDEX_SIZE_ERR);
54 expectException(function() {
55 analyser.fftSize = 4096;
56 }, DOMException.INDEX_SIZE_ERR);
57 analyser.fftSize = 1024;
58 is(analyser.frequencyBinCount, 512, "Correct new value for frequencyBinCount");
60 is(analyser.minDecibels, -100, "Correct default value for minDecibels");
61 is(analyser.maxDecibels, -30, "Correct default value for maxDecibels");
62 expectException(function() {
63 analyser.minDecibels = -30;
64 }, DOMException.INDEX_SIZE_ERR);
65 expectException(function() {
66 analyser.minDecibels = -29;
67 }, DOMException.INDEX_SIZE_ERR);
68 expectException(function() {
69 analyser.maxDecibels = -100;
70 }, DOMException.INDEX_SIZE_ERR);
71 expectException(function() {
72 analyser.maxDecibels = -101;
73 }, DOMException.INDEX_SIZE_ERR);
75 is(analyser.smoothingTimeConstant, 0.8, "Correct default value for smoothingTimeConstant");
76 expectException(function() {
77 analyser.smoothingTimeConstant = -0.1;
78 }, DOMException.INDEX_SIZE_ERR);
79 expectException(function() {
80 analyser.smoothingTimeConstant = 1.1;
81 }, DOMException.INDEX_SIZE_ERR);
82 analyser.smoothingTimeConstant = 0;
83 analyser.smoothingTimeConstant = 1;
85 SimpleTest.finish();
86 });
88 </script>
89 </pre>
90 </body>
91 </html>
