The Tor Browser: content/media/webaudio/test/test_delayNodeWithGain.html@b8a032363ba2

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 DelayNode with a GainNode</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 src="webaudio.js" type="text/javascript"></script>

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

    13 var gTest = {

    14   length: 4096,

    15   numberOfChannels: 1,

    16   createGraph: function(context) {

    17     var buffer = context.createBuffer(1, 2048, context.sampleRate);

    18     for (var i = 0; i < 2048; ++i) {

    19       buffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * i / context.sampleRate);

    20     }

    22     var source = context.createBufferSource();

    24     var delay = context.createDelay();

    26     source.buffer = buffer;

    28     var gain = context.createGain();

    29     gain.gain.value = 0.5;

    31     source.connect(gain);

    32     gain.connect(delay);

    34     // Delay the source stream by 2048 frames

    35     delay.delayTime.value = 2048 / context.sampleRate;

    37     source.start(0);

    38     return delay;

    39   },

    40   createExpectedBuffers: function(context) {

    41     var expectedBuffer = context.createBuffer(1, 2048 * 2, context.sampleRate);

    42     for (var i = 2048; i < 2048 * 2; ++i) {

    43       expectedBuffer.getChannelData(0)[i] = Math.sin(440 * 2 * Math.PI * (i - 2048) / context.sampleRate) / 2;

    44     }

    45     return expectedBuffer;

    46   },

    47 };

    49 runTest();

    51 </script>

    52 </pre>

    53 </body>

    54 </html>

The Tor Browser / file revision