The Tor Browser: content/media/webaudio/test/test_delayNodeAtMax.html@6474c204b198 (annotated)

content/media/webaudio/test/test_delayNodeAtMax.html@6474c204b198 (annotated)

Wed, 31 Dec 2014 06:09:35 +0100

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

 <!DOCTYPE HTML>
 <html>
 <head>
   <title>Test DelayNode with maxDelayTime delay - bug 890528</title>
   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
 </head>
 <body>
 <pre id="test">
 <script src="webaudio.js" type="text/javascript"></script>
 <script class="testbody" type="text/javascript">
 const signalLength = 2048;
 const delayLength = 1000; // Not on a block boundary
 const outputLength = 4096 // > signalLength + 2 * delayLength;
 function applySignal(buffer, offset) {
   for (var i = 0; i < signalLength; ++i) {
     buffer.getChannelData(0)[offset + i] = Math.cos(Math.PI * i / signalLength);
   }
 }
 var gTest = {
   numberOfChannels: 1,
   createGraph: function(context) {
     var buffer = context.createBuffer(1, signalLength, context.sampleRate);
     applySignal(buffer, 0);
     var source = context.createBufferSource();
     source.buffer = buffer;
     const delayTime = delayLength / context.sampleRate;
     var delay = context.createDelay(delayTime);
     delay.delayTime.value = delayTime;
     source.connect(delay);
     source.start(0);
     return delay;
   },
   createExpectedBuffers: function(context) {
     var expectedBuffer = context.createBuffer(1, outputLength, context.sampleRate);
     applySignal(expectedBuffer, delayLength);
     return expectedBuffer;
   },
 };
 runTest();
 </script>
 </pre>
 </body>
 </html>