content/media/webaudio/test/test_bug972678.html@b8a032363ba2 (annotated)
content/media/webaudio/test/test_bug972678.html
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | <!DOCTYPE HTML> |
| michael@0 | 2 | <html> |
| michael@0 | 3 | <head> |
| michael@0 | 4 | <title>Test buffers do not interfere when scheduled in sequence</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 | var OFFSETS = [0.005, 0.01, 0.02, 0.03]; |
| michael@0 | 13 | var LENGTH = 128; |
| michael@0 | 14 | |
| michael@0 | 15 | var gTest = { |
| michael@0 | 16 | length: 128 * OFFSETS.length, |
| michael@0 | 17 | numberOfChannels: 1, |
| michael@0 | 18 | |
| michael@0 | 19 | createGraph: function(context) { |
| michael@0 | 20 | var gain = context.createGain(); |
| michael@0 | 21 | |
| michael@0 | 22 | // create a repeating sample |
| michael@0 | 23 | var repeatingSample = context.createBuffer(1, 2, context.sampleRate); |
| michael@0 | 24 | var c = repeatingSample.getChannelData(0); |
| michael@0 | 25 | for (var i = 0; i < repeatingSample.length; ++i) { |
| michael@0 | 26 | c[i] = i % 2 == 0 ? 1 : -1; |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | OFFSETS.forEach(function (offset, offsetIdx) { |
| michael@0 | 30 | // Schedule a set of nodes to repeat the sample. |
| michael@0 | 31 | for (var i = 0; i < LENGTH; i += repeatingSample.length) { |
| michael@0 | 32 | var source = context.createBufferSource(); |
| michael@0 | 33 | source.buffer = repeatingSample; |
| michael@0 | 34 | source.connect(gain); |
| michael@0 | 35 | source.start((offsetIdx * LENGTH + i + offset) / context.sampleRate); |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | buffer = context.createBuffer(1, LENGTH, context.sampleRate); |
| michael@0 | 39 | c = buffer.getChannelData(0); |
| michael@0 | 40 | for (var i = 0; i < buffer.length; ++i) { |
| michael@0 | 41 | c[i] = i % 2 == 0 ? -1 : 1; |
| michael@0 | 42 | } |
| michael@0 | 43 | |
| michael@0 | 44 | var source = context.createBufferSource(); |
| michael@0 | 45 | source.buffer = buffer; |
| michael@0 | 46 | source.connect(gain); |
| michael@0 | 47 | source.start((offsetIdx * LENGTH + offset) / context.sampleRate); |
| michael@0 | 48 | }); |
| michael@0 | 49 | |
| michael@0 | 50 | return gain; |
| michael@0 | 51 | }, |
| michael@0 | 52 | |
| michael@0 | 53 | createExpectedBuffers: function(context) { |
| michael@0 | 54 | return context.createBuffer(1, gTest.length, context.sampleRate); |
| michael@0 | 55 | }, |
| michael@0 | 56 | }; |
| michael@0 | 57 | |
| michael@0 | 58 | runTest(); |
| michael@0 | 59 | </script> |
| michael@0 | 60 | </pre> |
| michael@0 | 61 | </body> |
| michael@0 | 62 | </html> |
