The Tor Browser: content/media/webaudio/test/test_mediaStreamAudioSourceNode.html@44a2da4a2ab2

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

     1 <!DOCTYPE HTML>

     2 <html>

     3 <meta charset="utf-8">

     4 <head>

     5   <title>Test MediaStreamAudioSourceNode processing is correct</title>

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

     7   <script type="text/javascript" src="webaudio.js"></script>

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

     9 </head>

    10 <body>

    11 <pre id="test">

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

    14 function createBuffer(context, delay) {

    15   var buffer = context.createBuffer(2, 2048, context.sampleRate);

    16   for (var i = 0; i < 2048 - delay; ++i) {

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

    18     buffer.getChannelData(1)[i + delay] = -buffer.getChannelData(0)[i + delay];

    19   }

    20   return buffer;

    21 }

    23 var gTest = {

    24   length: 2048,

    25   skipOfflineContextTests: true,

    26   createGraph: function(context) {

    27     var sourceGraph = new AudioContext();

    28     var source = sourceGraph.createBufferSource();

    29     source.buffer = createBuffer(context, 0);

    30     var dest = sourceGraph.createMediaStreamDestination();

    31     source.connect(dest);

    32     source.start(0);

    34     var mediaStreamSource = context.createMediaStreamSource(dest.stream);

    35     // channelCount and channelCountMode should have no effect

    36     mediaStreamSource.channelCount = 1;

    37     mediaStreamSource.channelCountMode = "explicit";

    38     return mediaStreamSource;

    39   },

    40   createExpectedBuffers: function(context) {

    41     return createBuffer(context, 1);

    42   },

    43 };

    45 runTest();

    47 </script>

    48 </pre>

    49 </body>

    50 </html>

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