GNU Radio 3.4.0 C++ API
trellis_siso_combined_f.h
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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_TRELLIS_SISO_COMBINED_F_H
00024 #define INCLUDED_TRELLIS_SISO_COMBINED_F_H
00025 
00026 #include "fsm.h"
00027 #include "siso_type.h"
00028 #include "calc_metric.h"
00029 #include "core_algorithms.h"
00030 #include <gr_block.h>
00031 
00032 class trellis_siso_combined_f;
00033 typedef boost::shared_ptr<trellis_siso_combined_f> trellis_siso_combined_f_sptr;
00034 
00035 trellis_siso_combined_f_sptr trellis_make_siso_combined_f (
00036     const fsm &FSM,     // underlying FSM
00037     int K,              // block size in trellis steps
00038     int S0,             // initial state (put -1 if not specified)
00039     int SK,             // final state (put -1 if not specified)
00040     bool POSTI,         // true if you want a-posteriori info about the input symbols to be mux-ed in the output
00041     bool POSTO,         // true if you want a-posteriori info about the output symbols to be mux-ed in the output
00042     trellis_siso_type_t d_SISO_TYPE, // perform "min-sum" or "sum-product" combining 
00043     int D,
00044     const std::vector<float> &TABLE,
00045     trellis_metric_type_t TYPE
00046 );
00047 
00048 /*!
00049  *  \ingroup coding_blk
00050  */
00051 class trellis_siso_combined_f : public gr_block
00052 {
00053   fsm d_FSM;
00054   int d_K;
00055   int d_S0;
00056   int d_SK;
00057   bool d_POSTI;
00058   bool d_POSTO;
00059   trellis_siso_type_t d_SISO_TYPE;
00060   int d_D;
00061   std::vector<float> d_TABLE;
00062   trellis_metric_type_t d_TYPE;
00063   //std::vector<float> d_alpha;
00064   //std::vector<float> d_beta;
00065 
00066   friend trellis_siso_combined_f_sptr trellis_make_siso_combined_f (
00067     const fsm &FSM,
00068     int K,
00069     int S0,
00070     int SK,
00071     bool POSTI,
00072     bool POSTO,
00073     trellis_siso_type_t d_SISO_TYPE,
00074     int D,
00075     const std::vector<float> &TABLE,
00076     trellis_metric_type_t TYPE);
00077 
00078 
00079   trellis_siso_combined_f (
00080     const fsm &FSM,
00081     int K,
00082     int S0,
00083     int SK,
00084     bool POSTI,
00085     bool POSTO,
00086     trellis_siso_type_t d_SISO_TYPE,
00087     int D,
00088     const std::vector<float> &TABLE,
00089     trellis_metric_type_t TYPE);
00090 
00091 
00092 public:
00093   fsm FSM () const { return d_FSM; }
00094   int K () const { return d_K; }
00095   int S0 () const { return d_S0; }
00096   int SK () const { return d_SK; }
00097   bool POSTI () const { return d_POSTI; }
00098   bool POSTO () const { return d_POSTO; }
00099   trellis_siso_type_t SISO_TYPE () const { return d_SISO_TYPE; }
00100   int D () const { return d_D; }
00101   std::vector<float> TABLE () const { return d_TABLE; }
00102   trellis_metric_type_t TYPE () const { return d_TYPE; }
00103   void forecast (int noutput_items,
00104                  gr_vector_int &ninput_items_required);
00105   int general_work (int noutput_items,
00106                     gr_vector_int &ninput_items,
00107                     gr_vector_const_void_star &input_items,
00108                     gr_vector_void_star &output_items);
00109 };
00110 
00111 #endif