third_party/WebKit/LayoutTests/webaudio/scriptprocessornode-zero-input-channels.html

   1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
   2 <html>
   3 <head>
   4 <script src="resources/compatibility.js"></script>
   5 <script src="resources/audio-testing.js"></script>
   6 <script src="../resources/js-test.js"></script>
   7 </head>
   8
   9 <body>
  10 <div id="description"></div>
  11 <div id="console"></div>
  12
  13 <script>
  14 description("Tests that ScriptProcessorNode accepts 0 input channels.");
  15
  16 var sampleRate = 44100.0;
  17 var renderLengthInFrames = 512;
  18 var bufferSize = 512;
  19
  20 function checkResult(e)
  21 {
  22     testPassed("ScriptProcessorNode accepts 0 input channels.");
  23
  24     finishJSTest();
  25 }
  26
  27 function runTest()
  28 {
  29     if (window.testRunner) {
  30         testRunner.dumpAsText();
  31         testRunner.waitUntilDone();
  32     }
  33
  34     window.jsTestIsAsync = true;
  35
  36     var context = new OfflineAudioContext(1, renderLengthInFrames, sampleRate);
  37
  38     var node;
  39
  40     try {
  41         node = context.createScriptProcessor(bufferSize, 0, 1);
  42         testPassed("Successfully created ScriptProcessorNode.");
  43     } catch (e) {
  44         testFailed("Failed to create ScriptProcessorNode.");
  45     }
  46
  47     var source = context.createBufferSource();
  48     source.buffer = createImpulseBuffer(context, bufferSize);
  49
  50     // The onaudioprocess function doesn't need to do anything.  We just need the process to start
  51     // to test that implementation accepts 0 input channels.
  52     //
  53     // FIXME: check the .inputBuffer attribute of the AudioProcessingEvent.
  54     node.onaudioprocess = function(e) { };
  55     source.connect(node);
  56     node.connect(context.destination);
  57     source.start(0);
  58
  59     context.oncomplete = checkResult;
  60     context.startRendering();
  61 }
  62
  63 runTest();
  64 successfullyParsed = true;
  65 </script>
  66
  67 </body>
  68 </html>