test_waveShaperPassThrough.html (1427B)
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <title>Test WaveShaperNode with passthrough</title> 5 <script src="/tests/SimpleTest/SimpleTest.js"></script> 6 <script type="text/javascript" src="webaudio.js"></script> 7 <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" /> 8 </head> 9 <body> 10 <pre id="test"> 11 <script class="testbody" type="text/javascript"> 12 13 var gTest = { 14 length: 4096, 15 numberOfChannels: 1, 16 createGraph(context) { 17 var source = context.createBufferSource(); 18 source.buffer = this.buffer; 19 20 var shaper = context.createWaveShaper(); 21 shaper.curve = this.curve; 22 23 var shaperWrapped = SpecialPowers.wrap(shaper); 24 ok("passThrough" in shaperWrapped, "WaveShaperNode should support the passThrough API"); 25 shaperWrapped.passThrough = true; 26 27 source.connect(shaper); 28 29 source.start(0); 30 return shaper; 31 }, 32 createExpectedBuffers(context) { 33 this.buffer = context.createBuffer(1, 4096, context.sampleRate); 34 for (var i = 1; i < 4095; ++i) { 35 this.buffer.getChannelData(0)[i] = 2 * (i / 4096) - 1; 36 } 37 // Two out of range values 38 this.buffer.getChannelData(0)[0] = -2; 39 this.buffer.getChannelData(0)[4095] = 2; 40 41 this.curve = new Float32Array(2048); 42 for (var i = 0; i < 2048; ++i) { 43 this.curve[i] = Math.sin(100 * Math.PI * (i + 1) / context.sampleRate); 44 } 45 46 return [this.buffer]; 47 }, 48 }; 49 50 runTest(); 51 52 </script> 53 </pre> 54 </body> 55 </html>