<!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: gr_ctcss_squelch_ff.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>gr_ctcss_squelch_ff.h</h1><a href="gr__ctcss__squelch__ff_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_GR_CTCSS_SQUELCH_FF_H</span> <a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GR_CTCSS_SQUELCH_FF_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__squelch__base__ff_8h.html">gr_squelch_base_ff.h</a>></span> <a name="l00027"></a>00027 <span class="preprocessor">#include <<a class="code" href="gri__goertzel_8h.html">gri_goertzel.h</a>></span> <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="keyword">class </span><a class="code" href="classgr__ctcss__squelch__ff.html" title="gate or zero output if ctcss tone not present">gr_ctcss_squelch_ff</a>; <a name="l00030"></a>00030 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<gr_ctcss_squelch_ff></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_ctcss_squelch_ff_sptr</a>; <a name="l00031"></a>00031 <a name="l00032"></a>00032 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_ctcss_squelch_ff_sptr</a> <a name="l00033"></a>00033 <a class="code" href="gr__ctcss__squelch__ff_8h.html#a61474818570d21a988192fd2aaa731b5">gr_make_ctcss_squelch_ff</a>(<span class="keywordtype">int</span> rate, <span class="keywordtype">float</span> freq, <span class="keywordtype">float</span> <a class="code" href="classgr__ctcss__squelch__ff.html#ab8172ea481da8ee9924c2fc8b81b816e">level</a>=0.01, <span class="keywordtype">int</span> <a class="code" href="classgr__ctcss__squelch__ff.html#a852ffb98f9ece7b1a2ae88ac4a069708">len</a>=0, <span class="keywordtype">int</span> <a class="code" href="classgr__squelch__base__ff.html#ac2f3750d222001ce567cd0a98aac1f42">ramp</a>=0, <span class="keywordtype">bool</span> <a class="code" href="classgr__squelch__base__ff.html#a3a355b937004b1591ea4cd7e6f350f01">gate</a>=<span class="keyword">false</span>); <a name="l00034"></a>00034 <span class="comment"></span> <a name="l00035"></a>00035 <span class="comment">/*!</span> <a name="l00036"></a>00036 <span class="comment"> * \brief gate or zero output if ctcss tone not present</span> <a name="l00037"></a>00037 <span class="comment"> * \ingroup level_blk</span> <a name="l00038"></a>00038 <span class="comment"> */</span> <a name="l00039"></a><a class="code" href="classgr__ctcss__squelch__ff.html">00039</a> <span class="keyword">class </span><a class="code" href="classgr__ctcss__squelch__ff.html" title="gate or zero output if ctcss tone not present">gr_ctcss_squelch_ff</a> : <span class="keyword">public</span> <a class="code" href="classgr__squelch__base__ff.html">gr_squelch_base_ff</a> <a name="l00040"></a>00040 { <a name="l00041"></a>00041 <span class="keyword">private</span>: <a name="l00042"></a>00042 <span class="keywordtype">float</span> d_freq; <a name="l00043"></a>00043 <span class="keywordtype">float</span> d_level; <a name="l00044"></a>00044 <span class="keywordtype">int</span> d_len; <a name="l00045"></a>00045 <span class="keywordtype">bool</span> d_mute; <a name="l00046"></a>00046 <a name="l00047"></a>00047 <a class="code" href="classgri__goertzel.html" title="Implements Goertzel single-bin DFT calculation.">gri_goertzel</a> d_goertzel_l; <a name="l00048"></a>00048 <a class="code" href="classgri__goertzel.html" title="Implements Goertzel single-bin DFT calculation.">gri_goertzel</a> d_goertzel_c; <a name="l00049"></a>00049 <a class="code" href="classgri__goertzel.html" title="Implements Goertzel single-bin DFT calculation.">gri_goertzel</a> d_goertzel_r; <a name="l00050"></a>00050 <a name="l00051"></a>00051 <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_ctcss_squelch_ff_sptr</a> <a class="code" href="classgr__ctcss__squelch__ff.html#a129126ace0df5bfc5ca457afcf84977c">gr_make_ctcss_squelch_ff</a>(<span class="keywordtype">int</span> rate, <span class="keywordtype">float</span> freq, <span class="keywordtype">float</span> <a class="code" href="classgr__ctcss__squelch__ff.html#ab8172ea481da8ee9924c2fc8b81b816e">level</a>, <span class="keywordtype">int</span> <a class="code" href="classgr__ctcss__squelch__ff.html#a852ffb98f9ece7b1a2ae88ac4a069708">len</a>, <span class="keywordtype">int</span> <a class="code" href="classgr__squelch__base__ff.html#ac2f3750d222001ce567cd0a98aac1f42">ramp</a>, <span class="keywordtype">bool</span> <a class="code" href="classgr__squelch__base__ff.html#a3a355b937004b1591ea4cd7e6f350f01">gate</a>); <a name="l00052"></a>00052 <a class="code" href="classgr__ctcss__squelch__ff.html" title="gate or zero output if ctcss tone not present">gr_ctcss_squelch_ff</a>(<span class="keywordtype">int</span> rate, <span class="keywordtype">float</span> freq, <span class="keywordtype">float</span> level, <span class="keywordtype">int</span> len, <span class="keywordtype">int</span> ramp, <span class="keywordtype">bool</span> gate); <a name="l00053"></a>00053 <a name="l00054"></a>00054 <span class="keywordtype">int</span> find_tone(<span class="keywordtype">float</span> freq); <a name="l00055"></a>00055 <a name="l00056"></a>00056 <span class="keyword">protected</span>: <a name="l00057"></a>00057 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classgr__ctcss__squelch__ff.html#a5437e033ee9e42874cf16e751a73ff78">update_state</a>(<span class="keyword">const</span> <span class="keywordtype">float</span> &in); <a name="l00058"></a><a class="code" href="classgr__ctcss__squelch__ff.html#aa1819609522061104cffd2e5efde2ff3">00058</a> <span class="keyword">virtual</span> <span class="keywordtype">bool</span> <a class="code" href="classgr__ctcss__squelch__ff.html#aa1819609522061104cffd2e5efde2ff3">mute</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_mute; } <a name="l00059"></a>00059 <a name="l00060"></a>00060 <span class="keyword">public</span>: <a name="l00061"></a>00061 <a class="code" href="classstd_1_1vector.html">std::vector<float></a> <a class="code" href="classgr__ctcss__squelch__ff.html#a133380235e76cf3043f50bd80a1cb663">squelch_range</a>() <span class="keyword">const</span>; <a name="l00062"></a><a class="code" href="classgr__ctcss__squelch__ff.html#ab8172ea481da8ee9924c2fc8b81b816e">00062</a> <span class="keywordtype">float</span> <a class="code" href="classgr__ctcss__squelch__ff.html#ab8172ea481da8ee9924c2fc8b81b816e">level</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_level; } <a name="l00063"></a><a class="code" href="classgr__ctcss__squelch__ff.html#a24889c3a5c009e634fed7c8c814f13bf">00063</a> <span class="keywordtype">void</span> <a class="code" href="classgr__ctcss__squelch__ff.html#a24889c3a5c009e634fed7c8c814f13bf">set_level</a>(<span class="keywordtype">float</span> level) { d_level = level; } <a name="l00064"></a><a class="code" href="classgr__ctcss__squelch__ff.html#a852ffb98f9ece7b1a2ae88ac4a069708">00064</a> <span class="keywordtype">int</span> <a class="code" href="classgr__ctcss__squelch__ff.html#a852ffb98f9ece7b1a2ae88ac4a069708">len</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> d_len; } <a name="l00065"></a>00065 }; <a name="l00066"></a>00066 <a name="l00067"></a>00067 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_GR_CTCSS_SQUELCH_FF_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>