test_gainNodePassThrough.html (1145B)
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <title>Test GainNode 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: 2048, 15 numberOfChannels: 1, 16 createGraph(context) { 17 var source = context.createBufferSource(); 18 19 var gain = context.createGain(); 20 21 source.buffer = this.buffer; 22 23 source.connect(gain); 24 25 gain.gain.value = 0.5; 26 27 var gainWrapped = SpecialPowers.wrap(gain); 28 ok("passThrough" in gainWrapped, "GainNode should support the passThrough API"); 29 gainWrapped.passThrough = true; 30 31 source.start(0); 32 return gain; 33 }, 34 createExpectedBuffers(context) { 35 this.buffer = context.createBuffer(1, 2048, context.sampleRate); 36 for (var i = 0; i < 2048; ++i) { 37 this.buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); 38 } 39 40 return [this.buffer]; 41 }, 42 }; 43 44 runTest(); 45 46 </script> 47 </pre> 48 </body> 49 </html>