00001 /* -*- c++ -*- */ 00002 /* 00003 * Copyright 2008 Free Software Foundation, Inc. 00004 * 00005 * GNU Radio is free software; you can redistribute it and/or modify 00006 * it under the terms of the GNU General Public License as published by 00007 * the Free Software Foundation; either version 3, or (at your option) 00008 * any later version. 00009 * 00010 * GNU Radio is distributed in the hope that it will be useful, 00011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 00012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00013 * GNU General Public License for more details. 00014 * 00015 * You should have received a copy of the GNU General Public License 00016 * along with GNU Radio; see the file COPYING. If not, write to 00017 * the Free Software Foundation, Inc., 51 Franklin Street, 00018 * Boston, MA 02110-1301, USA. 00019 */ 00020 #ifndef INCLUDED_GR_DECODE_CCSDS_27_FB_H 00021 #define INCLUDED_GR_DECODE_CCSDS_27_FB_H 00022 00023 #include <gr_sync_decimator.h> 00024 00025 extern "C" { 00026 #include "../viterbi/viterbi.h" 00027 } 00028 00029 class gr_decode_ccsds_27_fb; 00030 00031 typedef boost::shared_ptr<gr_decode_ccsds_27_fb> gr_decode_ccsds_27_fb_sptr; 00032 00033 gr_decode_ccsds_27_fb_sptr gr_make_decode_ccsds_27_fb(); 00034 00054 class gr_decode_ccsds_27_fb : public gr_sync_decimator 00055 { 00056 private: 00057 friend gr_decode_ccsds_27_fb_sptr gr_make_decode_ccsds_27_fb(); 00058 00059 gr_decode_ccsds_27_fb(); 00060 00061 // Viterbi state 00062 int d_mettab[2][256]; 00063 struct viterbi_state d_state0[64]; 00064 struct viterbi_state d_state1[64]; 00065 unsigned char d_viterbi_in[16]; 00066 00067 int d_count; 00068 00069 public: 00070 ~gr_decode_ccsds_27_fb(); 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 /* INCLUDED_GR_DECODE_CCSDS_27_FB_H */