00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2004 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_IIR_FILTER_FFD_H 00024 #define INCLUDED_GR_IIR_FILTER_FFD_H 00025 00026 #include <gr_sync_block.h> 00027 #include <gri_iir.h> 00028 #include <stdexcept> 00029 00030 class gr_iir_filter_ffd; 00031 typedef boost::shared_ptr<gr_iir_filter_ffd> gr_iir_filter_ffd_sptr; 00032 gr_iir_filter_ffd_sptr 00033 gr_make_iir_filter_ffd (const std::vector<double> &fftaps, 00034 const std::vector<double> &fbtaps) throw (std::invalid_argument); 00035 00059 class gr_iir_filter_ffd : public gr_sync_block 00060 { 00061 private: 00062 friend gr_iir_filter_ffd_sptr 00063 gr_make_iir_filter_ffd (const std::vector<double> &fftaps, 00064 const std::vector<double> &fbtaps) throw (std::invalid_argument); 00065 00066 gri_iir<float,float,double> d_iir; 00067 std::vector<double> d_new_fftaps; 00068 std::vector<double> d_new_fbtaps; 00069 bool d_updated; 00070 00074 gr_iir_filter_ffd (const std::vector<double> &fftaps, 00075 const std::vector<double> &fbtaps) throw (std::invalid_argument); 00076 00077 public: 00078 ~gr_iir_filter_ffd (); 00079 00080 void set_taps (const std::vector<double> &fftaps, 00081 const std::vector<double> &fbtaps) throw (std::invalid_argument); 00082 00083 int work (int noutput_items, 00084 gr_vector_const_void_star &input_items, 00085 gr_vector_void_star &output_items); 00086 }; 00087 00088 #endif