This file is indexed.

/usr/share/qt5/doc/qtmultimedia/qtmultimedia-multimedia-spectrum-3rdparty-fftreal-fftreal-wrapper-h.html is in qtmultimedia5-doc-html 5.9.5-0ubuntu1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html>
<html lang="en">
<head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
  <title>fftreal_wrapper.h Example File | Qt Multimedia 5.9</title>
  <link rel="stylesheet" type="text/css" href="style/offline-simple.css" />
  <script type="text/javascript">
    document.getElementsByTagName("link").item(0).setAttribute("href", "style/offline.css");
    // loading style sheet breaks anchors that were jumped to before
    // so force jumping to anchor again
    setTimeout(function() {
        var anchor = location.hash;
        // need to jump to different anchor first (e.g. none)
        location.hash = "#";
        setTimeout(function() {
            location.hash = anchor;
        }, 0);
    }, 0);
  </script>
</head>
<body>
<div class="header" id="qtdocheader">
  <div class="main">
    <div class="main-rounded">
      <div class="navigationbar">
        <table><tr>
<td >Qt 5.9</td><td ><a href="qtmultimedia-index.html">Qt Multimedia</a></td><td ><a href="qtmultimedia-multimedia-spectrum-example.html">Spectrum Example</a></td><td >fftreal_wrapper.h Example File</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right">Qt 5.9.5 Reference Documentation</td>
        </tr></table>
      </div>
    </div>
<div class="content">
<div class="line">
<div class="content mainContent">
<div class="sidebar"><div class="sidebar-content" id="sidebar-content"></div></div>
<h1 class="title">fftreal_wrapper.h Example File</h1>
<span class="subtitle">multimedia/spectrum/3rdparty/fftreal/fftreal_wrapper.h</span>
<!-- $$$multimedia/spectrum/3rdparty/fftreal/fftreal_wrapper.h-description -->
<div class="descr"> <a name="details"></a>
<pre class="cpp">

  <span class="comment">/***************************************************************************
  **
  ** Copyright (C) 2015 The Qt Company Ltd.
  ** Contact: http://www.qt.io/licensing/
  **
  ** This file is part of the examples of the Qt Toolkit.
  **
  ** This program is free software: you can redistribute it and/or modify
  ** it under the terms of the GNU Lesser General Public License as
  ** published by the Free Software Foundation, either version 2.1. This
  ** program is distributed in the hope that it will be useful, but WITHOUT
  ** ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  ** FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
  ** for more details. You should have received a copy of the GNU General
  ** Public License along with this program. If not, see
  ** &lt;http://www.gnu.org/licenses/&gt;.
  **
  ***************************************************************************/</span>

  <span class="preprocessor">#ifndef FFTREAL_WRAPPER_H</span>
  <span class="preprocessor">#define FFTREAL_WRAPPER_H</span>

  <span class="preprocessor">#include &lt;QtCore/QtGlobal&gt;</span>

  <span class="preprocessor">#if defined(FFTREAL_LIBRARY)</span>
  <span class="preprocessor">#  define FFTREAL_EXPORT Q_DECL_EXPORT</span>
  <span class="preprocessor">#else</span>
  <span class="preprocessor">#  define FFTREAL_EXPORT Q_DECL_IMPORT</span>
  <span class="preprocessor">#endif</span>

  <span class="keyword">class</span> FFTRealWrapperPrivate;

  <span class="comment">// Each pass of the FFT processes 2^X samples, where X is the</span>
  <span class="comment">// number below.</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="type">int</span> FFTLengthPowerOfTwo <span class="operator">=</span> <span class="number">12</span>;

  <span class="comment">/**
   * Wrapper around the FFTRealFixLen template provided by the FFTReal
   * library
   *
   * This class instantiates a single instance of FFTRealFixLen, using
   * FFTLengthPowerOfTwo as the template parameter.  It then exposes
   * FFTRealFixLen&lt;FFTLengthPowerOfTwo&gt;::do_fft via the calculateFFT
   * function, thereby allowing an application to dynamically link
   * against the FFTReal implementation.
   *
   * See http://ldesoras.free.fr/prod.html
   */</span>
  <span class="keyword">class</span> FFTREAL_EXPORT FFTRealWrapper
  {
  <span class="keyword">public</span>:
      FFTRealWrapper();
      <span class="operator">~</span>FFTRealWrapper();

      <span class="keyword">typedef</span> <span class="type">float</span> DataType;
      <span class="type">void</span> calculateFFT(DataType in<span class="operator">[</span><span class="operator">]</span><span class="operator">,</span> <span class="keyword">const</span> DataType out<span class="operator">[</span><span class="operator">]</span>);

  <span class="keyword">private</span>:
      FFTRealWrapperPrivate<span class="operator">*</span>  m_private;
  };

  <span class="preprocessor">#endif // FFTREAL_WRAPPER_H</span>

</pre>
</div>
<!-- @@@multimedia/spectrum/3rdparty/fftreal/fftreal_wrapper.h -->
        </div>
       </div>
   </div>
   </div>
</div>
<div class="footer">
   <p>
   <acronym title="Copyright">&copy;</acronym> 2017 The Qt Company Ltd.
   Documentation contributions included herein are the copyrights of
   their respective owners.<br>    The documentation provided herein is licensed under the terms of the    <a href="http://www.gnu.org/licenses/fdl.html">GNU Free Documentation    License version 1.3</a> as published by the Free Software Foundation.<br>    Qt and respective logos are trademarks of The Qt Company Ltd.     in Finland and/or other countries worldwide. All other trademarks are property
   of their respective owners. </p>
</div>
</body>
</html>