test_mediaStreamAudioSourceNode.html (1456B)
1 <!DOCTYPE HTML> 2 <html> 3 <meta charset="utf-8"> 4 <head> 5 <title>Test MediaStreamAudioSourceNode processing is correct</title> 6 <script src="/tests/SimpleTest/SimpleTest.js"></script> 7 <script type="text/javascript" src="webaudio.js"></script> 8 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> 9 </head> 10 <body> 11 <pre id="test"> 12 <script class="testbody" type="text/javascript"> 13 14 function createBuffer(context) { 15 var buffer = context.createBuffer(2, 2048, context.sampleRate); 16 for (var i = 0; i < 2048; ++i) { 17 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); 18 buffer.getChannelData(1)[i] = -buffer.getChannelData(0)[i]; 19 } 20 return buffer; 21 } 22 23 var gTest = { 24 length: 2048, 25 skipOfflineContextTests: true, 26 createGraph(context) { 27 var sourceGraph = new AudioContext(); 28 var source = sourceGraph.createBufferSource(); 29 source.buffer = createBuffer(context); 30 var dest = sourceGraph.createMediaStreamDestination(); 31 source.connect(dest); 32 source.start(0); 33 34 var mediaStreamSource = new MediaStreamAudioSourceNode(context, { mediaStream: dest.stream }); 35 // channelCount and channelCountMode should have no effect 36 mediaStreamSource.channelCount = 1; 37 mediaStreamSource.channelCountMode = "explicit"; 38 return mediaStreamSource; 39 }, 40 createExpectedBuffers(context) { 41 return createBuffer(context); 42 }, 43 }; 44 45 runTest(); 46 47 </script> 48 </pre> 49 </body> 50 </html>