/usr/share/gtk-doc/html/gst-plugins-base-libs-1.0/gst-plugins-base-libs-gstfft.html is in gstreamer1.0-plugins-base-doc 1.2.3-1.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 | <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>gstfft</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GStreamer Base Plugins 1.0 Library Reference Manual">
<link rel="up" href="gstreamer-ffft.html" title="FFT Library">
<link rel="prev" href="gstreamer-ffft.html" title="FFT Library">
<link rel="next" href="gst-plugins-base-libs-gstffts16.html" title="gstffts16">
<meta name="generator" content="GTK-Doc V1.19 (XML mode)">
<link rel="stylesheet" href="style.css" type="text/css">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="2">
<tr valign="middle">
<td><a accesskey="p" href="gstreamer-ffft.html"><img src="left.png" width="24" height="24" border="0" alt="Prev"></a></td>
<td><a accesskey="u" href="gstreamer-ffft.html"><img src="up.png" width="24" height="24" border="0" alt="Up"></a></td>
<td><a accesskey="h" href="index.html"><img src="home.png" width="24" height="24" border="0" alt="Home"></a></td>
<th width="100%" align="center">GStreamer Base Plugins 1.0 Library Reference Manual</th>
<td><a accesskey="n" href="gst-plugins-base-libs-gstffts16.html"><img src="right.png" width="24" height="24" border="0" alt="Next"></a></td>
</tr>
<tr><td colspan="5" class="shortcuts">
<a href="#gst-plugins-base-libs-gstfft.synopsis" class="shortcut">Top</a>
|
<a href="#gst-plugins-base-libs-gstfft.description" class="shortcut">Description</a>
</td></tr>
</table>
<div class="refentry">
<a name="gst-plugins-base-libs-gstfft"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="gst-plugins-base-libs-gstfft.top_of_page"></a>gstfft</span></h2>
<p>gstfft — General FFT functions and declarations</p>
</td>
<td valign="top" align="right"></td>
</tr></table></div>
<div class="refsynopsisdiv">
<a name="gst-plugins-base-libs-gstfft.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <gst/fft/gstfft.h>
enum <a class="link" href="gst-plugins-base-libs-gstfft.html#GstFFTWindow" title="enum GstFFTWindow">GstFFTWindow</a>;
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="gst-plugins-base-libs-gstfft.html#gst-fft-next-fast-length" title="gst_fft_next_fast_length ()">gst_fft_next_fast_length</a> (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> n</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstfft.description"></a><h2>Description</h2>
<p>
This library includes general definitions and functions, useful for
all typed FFT classes.
</p>
</div>
<div class="refsect1">
<a name="gst-plugins-base-libs-gstfft.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="GstFFTWindow"></a><h3>enum GstFFTWindow</h3>
<pre class="programlisting">typedef enum {
GST_FFT_WINDOW_RECTANGULAR,
GST_FFT_WINDOW_HAMMING,
GST_FFT_WINDOW_HANN,
GST_FFT_WINDOW_BARTLETT,
GST_FFT_WINDOW_BLACKMAN
} GstFFTWindow;
</pre>
<p>
The various window functions available.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><a name="GST-FFT-WINDOW-RECTANGULAR:CAPS"></a><span class="term"><code class="literal">GST_FFT_WINDOW_RECTANGULAR</code></span></p></td>
<td>Rectangular window
</td>
</tr>
<tr>
<td><p><a name="GST-FFT-WINDOW-HAMMING:CAPS"></a><span class="term"><code class="literal">GST_FFT_WINDOW_HAMMING</code></span></p></td>
<td>Hamming window
</td>
</tr>
<tr>
<td><p><a name="GST-FFT-WINDOW-HANN:CAPS"></a><span class="term"><code class="literal">GST_FFT_WINDOW_HANN</code></span></p></td>
<td>Hann (sometimes also called Hanning) window
</td>
</tr>
<tr>
<td><p><a name="GST-FFT-WINDOW-BARTLETT:CAPS"></a><span class="term"><code class="literal">GST_FFT_WINDOW_BARTLETT</code></span></p></td>
<td>Bartlett window
</td>
</tr>
<tr>
<td><p><a name="GST-FFT-WINDOW-BLACKMAN:CAPS"></a><span class="term"><code class="literal">GST_FFT_WINDOW_BLACKMAN</code></span></p></td>
<td>Blackman window
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gst-fft-next-fast-length"></a><h3>gst_fft_next_fast_length ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gst_fft_next_fast_length (<em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gint"><span class="type">gint</span></a> n</code></em>);</pre>
<p>
Returns the next number to <em class="parameter"><code>n</code></em> that is entirely a product
of 2, 3 and 5. Using this as the <em class="parameter"><code>len</code></em> parameter for
the different GstFFT types will provide the best performance.
</p>
<div class="variablelist"><table border="0" class="variablelist">
<colgroup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>n</code></em> :</span></p></td>
<td>Number for which the next fast length should be returned</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the next fast FFT length.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
</div>
<div class="footer">
<hr>
Generated by GTK-Doc V1.19</div>
</body>
</html>
|