<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>GNU Radio 3.2.2 C++ API: gri_goertzel.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.6.2 --> <h1>gri_goertzel.h</h1><a href="gri__goertzel_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*- */</span> <a name="l00002"></a>00002 <span class="comment">/*</span> <a name="l00003"></a>00003 <span class="comment"> * Copyright 2006 Free Software Foundation, Inc.</span> <a name="l00004"></a>00004 <span class="comment"> * </span> <a name="l00005"></a>00005 <span class="comment"> * This file is part of GNU Radio</span> <a name="l00006"></a>00006 <span class="comment"> * </span> <a name="l00007"></a>00007 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span> <a name="l00008"></a>00008 <span class="comment"> * it under the terms of the GNU General Public License as published by</span> <a name="l00009"></a>00009 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span> <a name="l00010"></a>00010 <span class="comment"> * any later version.</span> <a name="l00011"></a>00011 <span class="comment"> * </span> <a name="l00012"></a>00012 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span> <a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span> <a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span> <a name="l00015"></a>00015 <span class="comment"> * GNU General Public License for more details.</span> <a name="l00016"></a>00016 <span class="comment"> * </span> <a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU General Public License</span> <a name="l00018"></a>00018 <span class="comment"> * along with GNU Radio; see the file COPYING. If not, write to</span> <a name="l00019"></a>00019 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span> <a name="l00020"></a>00020 <span class="comment"> * Boston, MA 02110-1301, USA.</span> <a name="l00021"></a>00021 <span class="comment"> */</span> <a name="l00022"></a>00022 <a name="l00023"></a>00023 <span class="preprocessor">#ifndef INCLUDED_GRI_GOERTZEL_H</span> <a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GRI_GOERTZEL_H</span> <a name="l00025"></a>00025 <span class="preprocessor"></span> <a name="l00026"></a>00026 <span class="preprocessor">#include <<a class="code" href="gr__types_8h.html">gr_types.h</a>></span> <a name="l00027"></a>00027 <span class="comment"></span> <a name="l00028"></a>00028 <span class="comment">/*!</span> <a name="l00029"></a>00029 <span class="comment"> * \brief Implements Goertzel single-bin DFT calculation</span> <a name="l00030"></a>00030 <span class="comment"> * \ingroup misc</span> <a name="l00031"></a>00031 <span class="comment"> */</span> <a name="l00032"></a><a class="code" href="classgri__goertzel.html">00032</a> <span class="keyword">class </span><a class="code" href="classgri__goertzel.html" title="Implements Goertzel single-bin DFT calculation.">gri_goertzel</a> <a name="l00033"></a>00033 { <a name="l00034"></a>00034 <span class="keyword">public</span>: <a name="l00035"></a><a class="code" href="classgri__goertzel.html#abb2bad35613053e168e8eb55e227cd81">00035</a> <a class="code" href="classgri__goertzel.html#abb2bad35613053e168e8eb55e227cd81">gri_goertzel</a>() {} <a name="l00036"></a>00036 <a class="code" href="classgri__goertzel.html#abb2bad35613053e168e8eb55e227cd81">gri_goertzel</a>(<span class="keywordtype">int</span> rate, <span class="keywordtype">int</span> len, <span class="keywordtype">float</span> freq); <a name="l00037"></a>00037 <a name="l00038"></a>00038 <span class="comment">// Process a input array</span> <a name="l00039"></a>00039 <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> <a class="code" href="classgri__goertzel.html#a769715ae35410dc37917d2729d2fbf2a">batch</a>(<span class="keywordtype">float</span> *in); <a name="l00040"></a>00040 <a name="l00041"></a>00041 <span class="comment">// Process sample by sample</span> <a name="l00042"></a>00042 <span class="keywordtype">void</span> <a class="code" href="classgri__goertzel.html#a44f79dbf29b56ad28158ac848ef23984">input</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> &in); <a name="l00043"></a>00043 <a class="code" href="gr__complex_8h.html#aec4bfe41433369afae9327f1b0bc9109">gr_complex</a> <a class="code" href="classgri__goertzel.html#ae92df59b08801b3d0c800a22288172aa">output</a>(); <a name="l00044"></a><a class="code" href="classgri__goertzel.html#ae1dfaba30b30496337f2ed83ec57c21c">00044</a> <span class="keywordtype">bool</span> <a class="code" href="classgri__goertzel.html#ae1dfaba30b30496337f2ed83ec57c21c">ready</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_processed == d_len; } <a name="l00045"></a>00045 <a name="l00046"></a>00046 <span class="keyword">private</span>: <a name="l00047"></a>00047 <span class="keywordtype">float</span> d_d1; <a name="l00048"></a>00048 <span class="keywordtype">float</span> d_d2; <a name="l00049"></a>00049 <span class="keywordtype">float</span> d_wr; <a name="l00050"></a>00050 <span class="keywordtype">float</span> d_wi; <a name="l00051"></a>00051 <span class="keywordtype">int</span> d_len; <a name="l00052"></a>00052 <span class="keywordtype">int</span> d_processed; <a name="l00053"></a>00053 }; <a name="l00054"></a>00054 <a name="l00055"></a>00055 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_GRI_GOERTZEL_H */</span> </pre></div></div> <hr size="1"/><address style="text-align: right;"><small>Generated by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address> </body> </html>