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 buffers do not interfere when scheduled in sequence</title>

     5   <script type="text/javascript" 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 var OFFSETS = [0.005, 0.01, 0.02, 0.03];

    13 var LENGTH = 128;

    15 var gTest = {

    16   length: 128 * OFFSETS.length,

    17   numberOfChannels: 1,

    19   createGraph: function(context) {

    20     var gain = context.createGain();

    22     // create a repeating sample

    23     var repeatingSample = context.createBuffer(1, 2, context.sampleRate);

    24     var c = repeatingSample.getChannelData(0);

    25     for (var i = 0; i < repeatingSample.length; ++i) {

    26       c[i] = i % 2 == 0 ? 1 : -1;

    27     }

    29     OFFSETS.forEach(function (offset, offsetIdx) {

    30       // Schedule a set of nodes to repeat the sample.

    31       for (var i = 0; i < LENGTH; i += repeatingSample.length) {

    32         var source = context.createBufferSource();

    33         source.buffer = repeatingSample;

    34         source.connect(gain);

    35         source.start((offsetIdx * LENGTH + i + offset) / context.sampleRate);

    36       }

    38       buffer = context.createBuffer(1, LENGTH, context.sampleRate);

    39       c = buffer.getChannelData(0);

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

    41         c[i] = i % 2 == 0 ? -1 : 1;

    42       }

    44       var source = context.createBufferSource();

    45       source.buffer = buffer;

    46       source.connect(gain);

    47       source.start((offsetIdx * LENGTH + offset) / context.sampleRate);

    48     });

    50     return gain;

    51   },

    53   createExpectedBuffers: function(context) {

    54     return context.createBuffer(1, gTest.length, context.sampleRate);

    55   },

    56 };

    58 runTest();

    59 </script>

    60 </pre>

    61 </body>

    62 </html>

The Tor Browser / file revision