The Tor Browser: content/media/webaudio/test/test_audioBufferSourceNodeNeutered.html@44a2da4a2ab2 (annotated)

content/media/webaudio/test/test_audioBufferSourceNodeNeutered.html@44a2da4a2ab2 (annotated)

Fri, 16 Jan 2015 04:50:19 +0100

Replace accessor implementation with direct member state manipulation, by
request https://trac.torproject.org/projects/tor/ticket/9701#comment:32

 <!DOCTYPE HTML>
 <html>
 <head>
   <title>Test AudioBufferSourceNode when an AudioBuffer's getChanneData array is neutered</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <script type="text/javascript" src="webaudio.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 </head>
 <body>
 <pre id="test">
 <script class="testbody" type="text/javascript">
 function createGarbage() {
   var s = [];
   for (var i = 0; i < 10000000; ++i) {
     s.push(i);
   }
   var sum = 0;
   for (var i = 0; i < s.length; ++i) {
     sum += s[i];
   }
   return sum;
 }
 var worker = new Worker("audioBufferSourceNodeNeutered_worker.js");
 var gTest = {
   length: 2048,
   numberOfChannels: 1,
   createGraph: function(context) {
     var buffer = context.createBuffer(1, 10000000, context.sampleRate);
     var data = buffer.getChannelData(0);
     for (var i = 0; i < data.length; ++i) {
       data[i] = (i%100)/100 - 0.5;
     }
     // Neuter the buffer now
     var data = buffer.getChannelData(0).buffer;
     worker.postMessage(data, [data]);
     // Create garbage and GC to replace the buffer data with garbage
     SpecialPowers.gc();
     createGarbage();
     SpecialPowers.gc();
     var source = context.createBufferSource();
     source.buffer = buffer;
     source.start();
     // This should play silence
     return source;
   },
 };
 runTest();
 </script>
 </pre>
 </body>
 </html>