content/media/webaudio/test/test_gainNode.html@44a2da4a2ab2 (annotated)
content/media/webaudio/test/test_gainNode.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
| michael@0 | 1 | <!DOCTYPE HTML> |
| michael@0 | 2 | <html> |
| michael@0 | 3 | <head> |
| michael@0 | 4 | <title>Test GainNode</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 | var gTest = { |
| michael@0 | 14 | length: 2048, |
| michael@0 | 15 | numberOfChannels: 1, |
| michael@0 | 16 | createGraph: function(context) { |
| 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 source = context.createBufferSource(); |
| michael@0 | 23 | |
| michael@0 | 24 | var gain = context.createGain(); |
| michael@0 | 25 | |
| michael@0 | 26 | source.buffer = buffer; |
| michael@0 | 27 | |
| michael@0 | 28 | source.connect(gain); |
| michael@0 | 29 | |
| michael@0 | 30 | ok(gain.gain, "The audioparam member must exist"); |
| michael@0 | 31 | is(gain.gain.value, 1.0, "Correct initial value"); |
| michael@0 | 32 | is(gain.gain.defaultValue, 1.0, "Correct default value"); |
| michael@0 | 33 | gain.gain.value = 0.5; |
| michael@0 | 34 | is(gain.gain.value, 0.5, "Correct initial value"); |
| michael@0 | 35 | is(gain.gain.defaultValue, 1.0, "Correct default value"); |
| michael@0 | 36 | is(gain.channelCount, 2, "gain node has 2 input channels by default"); |
| michael@0 | 37 | is(gain.channelCountMode, "max", "Correct channelCountMode for the gain node"); |
| michael@0 | 38 | is(gain.channelInterpretation, "speakers", "Correct channelCountInterpretation for the gain node"); |
| michael@0 | 39 | |
| michael@0 | 40 | source.start(0); |
| michael@0 | 41 | return gain; |
| michael@0 | 42 | }, |
| michael@0 | 43 | createExpectedBuffers: function(context) { |
| michael@0 | 44 | var expectedBuffer = context.createBuffer(1, 2048, context.sampleRate); |
| michael@0 | 45 | for (var i = 0; i < 2048; ++i) { |
| michael@0 | 46 | expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate) / 2; |
| michael@0 | 47 | } |
| michael@0 | 48 | return expectedBuffer; |
| michael@0 | 49 | }, |
| michael@0 | 50 | }; |
| michael@0 | 51 | |
| michael@0 | 52 | runTest(); |
| michael@0 | 53 | |
| michael@0 | 54 | </script> |
| michael@0 | 55 | </pre> |
| michael@0 | 56 | </body> |
| michael@0 | 57 | </html> |
