<!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_freq_xlating_fir_filter_scf.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_freq_xlating_fir_filter_scf.h</h1><a href="gr__freq__xlating__fir__filter__scf_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 2002,2004 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="comment">/*</span> <a name="l00024"></a>00024 <span class="comment"> * WARNING: This file is automatically generated by</span> <a name="l00025"></a>00025 <span class="comment"> * generate_gr_freq_xlating_fir_filter_XXX.py Any changes made to this file</span> <a name="l00026"></a>00026 <span class="comment"> * will be overwritten.</span> <a name="l00027"></a>00027 <span class="comment"> */</span> <a name="l00028"></a>00028 <a name="l00029"></a>00029 <span class="preprocessor">#ifndef INCLUDED_GR_FREQ_XLATING_FIR_FILTER_SCF_H</span> <a name="l00030"></a>00030 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GR_FREQ_XLATING_FIR_FILTER_SCF_H</span> <a name="l00031"></a>00031 <span class="preprocessor"></span> <a name="l00032"></a>00032 <span class="preprocessor">#include <<a class="code" href="gr__sync__decimator_8h.html">gr_sync_decimator.h</a>></span> <a name="l00033"></a>00033 <span class="preprocessor">#include <<a class="code" href="gr__rotator_8h.html">gr_rotator.h</a>></span> <a name="l00034"></a>00034 <a name="l00035"></a>00035 <span class="keyword">class </span><a class="code" href="classgr__freq__xlating__fir__filter__scf.html" title="FIR filter combined with frequency translation with short input, gr_complex output...">gr_freq_xlating_fir_filter_scf</a>; <a name="l00036"></a>00036 <span class="keyword">typedef</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">boost::shared_ptr<gr_freq_xlating_fir_filter_scf></a> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_freq_xlating_fir_filter_scf_sptr</a>; <a name="l00037"></a>00037 <span class="comment"></span> <a name="l00038"></a>00038 <span class="comment">/*!</span> <a name="l00039"></a>00039 <span class="comment"> * Construct a FIR filter with the given taps and a composite frequency</span> <a name="l00040"></a>00040 <span class="comment"> * translation that shifts center_freq down to zero Hz. The frequency </span> <a name="l00041"></a>00041 <span class="comment"> * translation logically comes before the filtering operation.</span> <a name="l00042"></a>00042 <span class="comment"> */</span> <a name="l00043"></a>00043 <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_freq_xlating_fir_filter_scf_sptr</a> <a name="l00044"></a>00044 <a class="code" href="gr__freq__xlating__fir__filter__scf_8h.html#a49ed46f749ff1a7267acd0fdcf0e2b3e">gr_make_freq_xlating_fir_filter_scf</a> (<span class="keywordtype">int</span> <a class="code" href="classgr__sync__decimator.html#a285a3292be71f47df2e8f10a779eb752">decimation</a>, <span class="keyword">const</span> <a class="code" href="classstd_1_1vector.html">std::vector<float></a> &<a class="code" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>, <a name="l00045"></a>00045 <span class="keywordtype">double</span> center_freq, <span class="keywordtype">double</span> sampling_freq); <a name="l00046"></a>00046 <a name="l00047"></a>00047 <a name="l00048"></a>00048 <span class="keyword">class </span><a class="code" href="classgr__fir__scc.html" title="Abstract class for FIR with short input, gr_complex output and gr_complex tapsThis...">gr_fir_scc</a>; <a name="l00049"></a>00049 <span class="comment"></span> <a name="l00050"></a>00050 <span class="comment">/*!</span> <a name="l00051"></a>00051 <span class="comment"> * \brief FIR filter combined with frequency translation with short input, gr_complex output and float taps</span> <a name="l00052"></a>00052 <span class="comment"> * \ingroup filter_blk</span> <a name="l00053"></a>00053 <span class="comment"> *</span> <a name="l00054"></a>00054 <span class="comment"> * This class efficiently combines a frequency translation</span> <a name="l00055"></a>00055 <span class="comment"> * (typically "down conversion") with a FIR filter (typically low-pass)</span> <a name="l00056"></a>00056 <span class="comment"> * and decimation. It is ideally suited for a "channel selection filter"</span> <a name="l00057"></a>00057 <span class="comment"> * and can be efficiently used to select and decimate a narrow band signal</span> <a name="l00058"></a>00058 <span class="comment"> * out of wide bandwidth input.</span> <a name="l00059"></a>00059 <span class="comment"> *</span> <a name="l00060"></a>00060 <span class="comment"> * Uses a single input array to produce a single output array.</span> <a name="l00061"></a>00061 <span class="comment"> * Additional inputs and/or outputs are ignored.</span> <a name="l00062"></a>00062 <span class="comment"> */</span> <a name="l00063"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html">00063</a> <span class="keyword">class </span><a class="code" href="classgr__freq__xlating__fir__filter__scf.html" title="FIR filter combined with frequency translation with short input, gr_complex output...">gr_freq_xlating_fir_filter_scf</a> : <span class="keyword">public</span> <a class="code" href="classgr__sync__decimator.html" title="synchronous N:1 input to output with historyOverride work to provide the signal processing...">gr_sync_decimator</a> <a name="l00064"></a>00064 { <a name="l00065"></a>00065 <span class="keyword">public</span>: <a name="l00066"></a>00066 <span class="keyword">virtual</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a69b1a7b49b2e738efcf5b231c986af07">~gr_freq_xlating_fir_filter_scf</a> (); <a name="l00067"></a>00067 <a name="l00068"></a>00068 <span class="keywordtype">void</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#ab01b03d9373f39609382afee3ec37e75">set_center_freq</a> (<span class="keywordtype">double</span> center_freq); <a name="l00069"></a>00069 <span class="keywordtype">void</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a5eb895276824ad19521f381732f5f7a4">set_taps</a> (<span class="keyword">const</span> <a class="code" href="classstd_1_1vector.html">std::vector<float></a> &<a class="code" href="interpolator__taps_8h.html#a30bf032e13c2a9fc4a98e14e390cd65a">taps</a>); <a name="l00070"></a>00070 <a name="l00071"></a>00071 <span class="keywordtype">int</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a4c1621cf9e8cd06c27261040ab50ddec" title="just like gr_block::general_work, only this arranges to call consume_each for you...">work</a> (<span class="keywordtype">int</span> noutput_items, <a name="l00072"></a>00072 <a class="code" href="classstd_1_1vector.html">gr_vector_const_void_star</a> &input_items, <a name="l00073"></a>00073 <a class="code" href="classstd_1_1vector.html">gr_vector_void_star</a> &output_items); <a name="l00074"></a>00074 <a name="l00075"></a>00075 <span class="keyword">private</span>: <a name="l00076"></a>00076 <span class="keyword">friend</span> <a class="code" href="classboost_1_1shared__ptr.html" title="shared_ptr documentation stub">gr_freq_xlating_fir_filter_scf_sptr</a> <a name="l00077"></a>00077 <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a49ed46f749ff1a7267acd0fdcf0e2b3e">gr_make_freq_xlating_fir_filter_scf</a> (<span class="keywordtype">int</span> <a class="code" href="classgr__sync__decimator.html#a285a3292be71f47df2e8f10a779eb752">decimation</a>, <span class="keyword">const</span> <a class="code" href="classstd_1_1vector.html">std::vector<float></a> &taps, <a name="l00078"></a>00078 <span class="keywordtype">double</span> center_freq, <span class="keywordtype">double</span> sampling_freq); <a name="l00079"></a>00079 <a name="l00080"></a>00080 <span class="keyword">protected</span>: <a name="l00081"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a77361c1cafd317c97448c82d9e4afdd1">00081</a> <a class="code" href="classstd_1_1vector.html">std::vector<float></a> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a77361c1cafd317c97448c82d9e4afdd1">d_proto_taps</a>; <a name="l00082"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a7490402a2e31a5fdaa426b92205d3986">00082</a> <a class="code" href="classgr__fir__scc.html" title="Abstract class for FIR with short input, gr_complex output and gr_complex tapsThis...">gr_fir_scc</a> *<a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a7490402a2e31a5fdaa426b92205d3986">d_composite_fir</a>; <a name="l00083"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a8961434b4dd424f9b930339fb7048a5e">00083</a> <a class="code" href="classgr__rotator.html">gr_rotator</a> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a8961434b4dd424f9b930339fb7048a5e">d_r</a>; <a name="l00084"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a483ed0e013ce93112c52381ed49570c3">00084</a> <span class="keywordtype">double</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a483ed0e013ce93112c52381ed49570c3">d_center_freq</a>; <a name="l00085"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#aed4909d6fe6cc07eeeae6df1e2118dcc">00085</a> <span class="keywordtype">double</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#aed4909d6fe6cc07eeeae6df1e2118dcc">d_sampling_freq</a>; <a name="l00086"></a><a class="code" href="classgr__freq__xlating__fir__filter__scf.html#ae99d0da5bc2c44009ae1a82d32166651">00086</a> <span class="keywordtype">bool</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#ae99d0da5bc2c44009ae1a82d32166651">d_updated</a>; <a name="l00087"></a>00087 <a name="l00088"></a>00088 <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#a442a9e318f23483d904babaeabe3237a">build_composite_fir</a> (); <a name="l00089"></a>00089 <span class="comment"></span> <a name="l00090"></a>00090 <span class="comment"> /*!</span> <a name="l00091"></a>00091 <span class="comment"> * Construct a FIR filter with the given taps and a composite frequency</span> <a name="l00092"></a>00092 <span class="comment"> * translation that shifts center_freq down to zero Hz. The frequency </span> <a name="l00093"></a>00093 <span class="comment"> * translation logically comes before the filtering operation.</span> <a name="l00094"></a>00094 <span class="comment"> */</span> <a name="l00095"></a>00095 <a class="code" href="classgr__freq__xlating__fir__filter__scf.html#aa0a08601166b994c625d8a6edf57d000">gr_freq_xlating_fir_filter_scf</a> (<span class="keywordtype">int</span> decimation, <a name="l00096"></a>00096 <span class="keyword">const</span> <a class="code" href="classstd_1_1vector.html">std::vector<float></a> &taps, <a name="l00097"></a>00097 <span class="keywordtype">double</span> center_freq, <span class="keywordtype">double</span> sampling_freq); <a name="l00098"></a>00098 }; <a name="l00099"></a>00099 <a name="l00100"></a>00100 <span class="preprocessor">#endif </span><span class="comment">/* _gr_freq_xlating_fir_filter_scf_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>