test_mediaStreamTrackAudioSourceNode.html (1586B)
1 <!DOCTYPE HTML> 2 <html> 3 <meta charset="utf-8"> 4 <head> 5 <title>Test MediaStreamTrackAudioSourceNode 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 let buffer = context.createBuffer(2, 2048, context.sampleRate); 16 for (let 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 let gTest = { 24 length: 2048, 25 skipOfflineContextTests: true, 26 createGraph(context) { 27 let sourceGraph = new AudioContext(); 28 let source = sourceGraph.createBufferSource(); 29 source.buffer = createBuffer(context); 30 let dest = sourceGraph.createMediaStreamDestination(); 31 source.connect(dest); 32 33 // Extract first audio track from dest.stream 34 let track = dest.stream.getAudioTracks()[0]; 35 36 source.start(0); 37 38 let mediaStreamTrackSource = new MediaStreamTrackAudioSourceNode(context, { mediaStreamTrack: track }); 39 // channelCount and channelCountMode should have no effect 40 mediaStreamTrackSource.channelCount = 1; 41 mediaStreamTrackSource.channelCountMode = "explicit"; 42 return mediaStreamTrackSource; 43 }, 44 createExpectedBuffers(context) { 45 return createBuffer(context); 46 }, 47 }; 48 49 runTest(); 50 51 </script> 52 </pre> 53 </body> 54 </html>