The Tor Browser: content/media/webaudio/test/test

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 <!DOCTYPE HTML>

     2 <html>

     3 <head>

     4   <title>Test when and currentTime are in the same coordinate system</title>

     5   <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

     6   <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

     7 </head>

     8 <body>

     9 <pre id="test">

    10 <script class="testbody" type="text/javascript">

    12 SimpleTest.waitForExplicitFinish();

    13 addLoadEvent(function() {

    14   var freq = 330;

    16   var context = new AudioContext();

    18   var buffer = context.createBuffer(1, context.sampleRate / freq, context.sampleRate);

    19   for (var i = 0; i < buffer.length; ++i) {

    20     buffer.getChannelData(0)[i] = Math.sin(2 * Math.PI * i / buffer.length);

    21   }

    23   var source = context.createBufferSource();

    24   source.loop = true;

    25   source.buffer = buffer;

    27   setTimeout(function () {

    28       var finished = false;

    30       source.start(context.currentTime);

    31       var processor = context.createScriptProcessor(256, 1, 1);

    32       processor.onaudioprocess = function (e) {

    33           if (finished) return;

    34           var c = e.inputBuffer.getChannelData(0);

    35           var result = true;

    37           for (var i = 0; i < buffer.length; ++i) {

    38               if (Math.abs(c[i] - buffer.getChannelData(0)[i]) > 1e-9) {

    39                   result = false;

    40                   break;

    41               }

    42           }

    43           finished = true;

    44           ok(result, "when and currentTime are in same time coordinate system");

    45           SimpleTest.finish();

    46       }

    47       processor.connect(context.destination);

    48       source.connect(processor);

    49   }, 500);

    50 });

    52 </script>

    53 </pre>

    54 </body>

    55 </html>

The Tor Browser / file revision