gr_single_pole_iir_filter_cc.h

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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004,2005,2006 Free Software Foundation, Inc.
00004  * 
00005  * This file is part of GNU Radio
00006  * 
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  * 
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  * 
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_GR_SINGLE_POLE_IIR_FILTER_CC_H
00024 #define INCLUDED_GR_SINGLE_POLE_IIR_FILTER_CC_H
00025 
00026 #include <gr_sync_block.h>
00027 #include <gr_single_pole_iir.h>
00028 #include <gr_complex.h>
00029 #include <stdexcept>
00030 
00031 class gr_single_pole_iir_filter_cc;
00032 typedef boost::shared_ptr<gr_single_pole_iir_filter_cc> gr_single_pole_iir_filter_cc_sptr;
00033 
00034 gr_single_pole_iir_filter_cc_sptr 
00035 gr_make_single_pole_iir_filter_cc (double alpha, unsigned int vlen=1);
00036 
00056 class gr_single_pole_iir_filter_cc : public gr_sync_block
00057 {
00058  private:
00059   friend gr_single_pole_iir_filter_cc_sptr 
00060   gr_make_single_pole_iir_filter_cc (double alpha, unsigned int vlen);
00061 
00062   unsigned int                                          d_vlen;
00063   std::vector<gr_single_pole_iir<gr_complex,gr_complex,double> >        d_iir;
00064 
00065   gr_single_pole_iir_filter_cc (double alpha, unsigned int vlen);
00066 
00067  public:
00068   ~gr_single_pole_iir_filter_cc ();
00069 
00070   void set_taps (double alpha);
00071 
00072   int work (int noutput_items,
00073             gr_vector_const_void_star &input_items,
00074             gr_vector_void_star &output_items);
00075 };
00076 
00077 #endif

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