content/media/webaudio/test/test_analyserNode.html@6474c204b198 (annotated)
content/media/webaudio/test/test_analyserNode.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | <!DOCTYPE HTML> |
| michael@0 | 2 | <html> |
| michael@0 | 3 | <head> |
| michael@0 | 4 | <title>Test AnalyserNode</title> |
| michael@0 | 5 | <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> |
| michael@0 | 6 | <script type="text/javascript" src="webaudio.js"></script> |
| michael@0 | 7 | <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> |
| michael@0 | 8 | </head> |
| michael@0 | 9 | <body> |
| michael@0 | 10 | <pre id="test"> |
| michael@0 | 11 | <script class="testbody" type="text/javascript"> |
| michael@0 | 12 | |
| michael@0 | 13 | SimpleTest.waitForExplicitFinish(); |
| michael@0 | 14 | addLoadEvent(function() { |
| michael@0 | 15 | |
| michael@0 | 16 | var context = new AudioContext(); |
| michael@0 | 17 | var buffer = context.createBuffer(1, 2048, context.sampleRate); |
| michael@0 | 18 | for (var i = 0; i < 2048; ++i) { |
| michael@0 | 19 | buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); |
| michael@0 | 20 | } |
| michael@0 | 21 | |
| michael@0 | 22 | var destination = context.destination; |
| michael@0 | 23 | |
| michael@0 | 24 | var source = context.createBufferSource(); |
| michael@0 | 25 | |
| michael@0 | 26 | var analyser = context.createAnalyser(); |
| michael@0 | 27 | |
| michael@0 | 28 | source.buffer = buffer; |
| michael@0 | 29 | |
| michael@0 | 30 | source.connect(analyser); |
| michael@0 | 31 | analyser.connect(destination); |
| michael@0 | 32 | |
| michael@0 | 33 | is(analyser.channelCount, 1, "analyser node has 2 input channels by default"); |
| michael@0 | 34 | is(analyser.channelCountMode, "explicit", "Correct channelCountMode for the analyser node"); |
| michael@0 | 35 | is(analyser.channelInterpretation, "speakers", "Correct channelCountInterpretation for the analyser node"); |
| michael@0 | 36 | |
| michael@0 | 37 | is(analyser.fftSize, 2048, "Correct default value for fftSize"); |
| michael@0 | 38 | is(analyser.frequencyBinCount, 1024, "Correct default value for frequencyBinCount"); |
| michael@0 | 39 | expectException(function() { |
| michael@0 | 40 | analyser.fftSize = 0; |
| michael@0 | 41 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 42 | expectException(function() { |
| michael@0 | 43 | analyser.fftSize = 1; |
| michael@0 | 44 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 45 | expectException(function() { |
| michael@0 | 46 | analyser.fftSize = 8; |
| michael@0 | 47 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 48 | expectException(function() { |
| michael@0 | 49 | analyser.fftSize = 100; // non-power of two |
| michael@0 | 50 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 51 | expectException(function() { |
| michael@0 | 52 | analyser.fftSize = 2049; |
| michael@0 | 53 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 54 | expectException(function() { |
| michael@0 | 55 | analyser.fftSize = 4096; |
| michael@0 | 56 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 57 | analyser.fftSize = 1024; |
| michael@0 | 58 | is(analyser.frequencyBinCount, 512, "Correct new value for frequencyBinCount"); |
| michael@0 | 59 | |
| michael@0 | 60 | is(analyser.minDecibels, -100, "Correct default value for minDecibels"); |
| michael@0 | 61 | is(analyser.maxDecibels, -30, "Correct default value for maxDecibels"); |
| michael@0 | 62 | expectException(function() { |
| michael@0 | 63 | analyser.minDecibels = -30; |
| michael@0 | 64 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 65 | expectException(function() { |
| michael@0 | 66 | analyser.minDecibels = -29; |
| michael@0 | 67 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 68 | expectException(function() { |
| michael@0 | 69 | analyser.maxDecibels = -100; |
| michael@0 | 70 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 71 | expectException(function() { |
| michael@0 | 72 | analyser.maxDecibels = -101; |
| michael@0 | 73 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 74 | |
| michael@0 | 75 | is(analyser.smoothingTimeConstant, 0.8, "Correct default value for smoothingTimeConstant"); |
| michael@0 | 76 | expectException(function() { |
| michael@0 | 77 | analyser.smoothingTimeConstant = -0.1; |
| michael@0 | 78 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 79 | expectException(function() { |
| michael@0 | 80 | analyser.smoothingTimeConstant = 1.1; |
| michael@0 | 81 | }, DOMException.INDEX_SIZE_ERR); |
| michael@0 | 82 | analyser.smoothingTimeConstant = 0; |
| michael@0 | 83 | analyser.smoothingTimeConstant = 1; |
| michael@0 | 84 | |
| michael@0 | 85 | SimpleTest.finish(); |
| michael@0 | 86 | }); |
| michael@0 | 87 | |
| michael@0 | 88 | </script> |
| michael@0 | 89 | </pre> |
| michael@0 | 90 | </body> |
| michael@0 | 91 | </html> |
