test_singleSourceDest.html (2866B)
1 <!DOCTYPE HTML> 2 <html> 3 <head> 4 <title>Test whether we can create an AudioContext interface</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 SimpleTest.waitForExplicitFinish(); 14 addLoadEvent(function() { 15 var context = new AudioContext(); 16 var buffer = context.createBuffer(1, 2048, context.sampleRate); 17 for (var i = 0; i < 2048; ++i) { 18 buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate); 19 } 20 21 var destination = context.destination; 22 is(destination.context, context, "Destination node has proper context"); 23 is(destination.context, context, "Destination node has proper context"); 24 is(destination.numberOfInputs, 1, "Destination node has 1 inputs"); 25 is(destination.numberOfOutputs, 0, "Destination node has 0 outputs"); 26 is(destination.channelCount, 2, "Destination node has 2 input channels by default"); 27 is(destination.channelCountMode, "explicit", "Correct channelCountMode for the destination node"); 28 is(destination.channelInterpretation, "speakers", "Correct channelCountInterpretation for the destination node"); 29 ok(destination instanceof EventTarget, "AudioNodes must be EventTargets"); 30 31 var source = context.createBufferSource(); 32 is(source.context, context, "Source node has proper context"); 33 is(source.numberOfInputs, 0, "Source node has 0 inputs"); 34 is(source.numberOfOutputs, 1, "Source node has 1 outputs"); 35 is(source.loop, false, "Source node is not looping"); 36 is(source.loopStart, 0, "Correct default value for loopStart"); 37 is(source.loopEnd, 0, "Correct default value for loopEnd"); 38 ok(!source.buffer, "Source node should not have a buffer when it's created"); 39 is(source.channelCount, 2, "source node has 2 input channels by default"); 40 is(source.channelCountMode, "max", "Correct channelCountMode for the source node"); 41 is(source.channelInterpretation, "speakers", "Correct channelCountInterpretation for the source node"); 42 43 expectException(function() { 44 source.channelCount = 0; 45 }, DOMException.NOT_SUPPORTED_ERR); 46 47 source.buffer = buffer; 48 ok(source.buffer, "Source node should have a buffer now"); 49 50 source.connect(destination); 51 52 is(source.numberOfInputs, 0, "Source node has 0 inputs"); 53 is(source.numberOfOutputs, 1, "Source node has 0 outputs"); 54 is(destination.numberOfInputs, 1, "Destination node has 0 inputs"); 55 is(destination.numberOfOutputs, 0, "Destination node has 0 outputs"); 56 57 source.start(0); 58 SimpleTest.executeSoon(function() { 59 source.stop(0); 60 source.disconnect(); 61 62 SpecialPowers.clearUserPref("media.webaudio.enabled"); 63 SimpleTest.finish(); 64 }); 65 }); 66 67 </script> 68 </pre> 69 </body> 70 </html>