/* -*- c++ -*- */
/*
 * Copyright 2004 Free Software Foundation, Inc.
 * 
 * This file is part of GNU Radio
 * 
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 * 
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */

#ifndef INCLUDED_CORE_ALGORITHMS_H
#define INCLUDED_CORE_ALGORITHMS_H

#include <cmath>
#include <vector>
//#include <gr_complex.h>
#include "metric_type.h"
#include "fsm.h"
#include "interleaver.h"


float min(float a, float b);
float min_star(float a, float b);

template <class T> 
void viterbi_algorithm(int I, int S, int O,
             const std::vector<int> &NS,
             const std::vector<int> &OS,
             const std::vector< std::vector<int> > &PS,
             const std::vector< std::vector<int> > &PI,
             int K,
             int S0,int SK,
             const float *in, T *out
);

template <class Ti, class To>
void viterbi_algorithm_combined(int I, int S, int O,
             const std::vector<int> &NS,
             const std::vector<int> &OS,
             const std::vector< std::vector<int> > &PS,
             const std::vector< std::vector<int> > &PI,
             int K,
             int S0,int SK,
             int D,
             const std::vector<Ti> &TABLE,
             trellis_metric_type_t TYPE,
             const Ti *in, To *out
);



void siso_algorithm(int I, int S, int O,
             const std::vector<int> &NS,
             const std::vector<int> &OS,
             const std::vector< std::vector<int> > &PS,
             const std::vector< std::vector<int> > &PI,
             int K,
             int S0,int SK,
             bool POSTI, bool POSTO,
             float (*p2mymin)(float,float),
             const float *priori, const float *prioro, float *post
);


template <class T>
void siso_algorithm_combined(int I, int S, int O,
             const std::vector<int> &NS,
             const std::vector<int> &OS,
             const std::vector< std::vector<int> > &PS,
             const std::vector< std::vector<int> > &PI,
             int K,
             int S0,int SK,
             bool POSTI, bool POSTO,
             float (*p2mymin)(float,float),
             int D,
             const std::vector<T> &TABLE,
             trellis_metric_type_t TYPE,
             const float *priori, const T *observations, float *post
);


template<class Ti, class To>
void sccc_decoder_combined(
      const fsm &FSMo, int STo0, int SToK,
      const fsm &FSMi, int STi0, int STiK,
      const interleaver &INTERLEAVER, int blocklength, int repetitions,
      float (*p2mymin)(float,float),
      int D, const std::vector<Ti> &TABLE,
      trellis_metric_type_t METRIC_TYPE,
      float scaling,
      const Ti *observations, To *data
);


template<class T>
void sccc_decoder(
      const fsm &FSMo, int STo0, int SToK,
      const fsm &FSMi, int STi0, int STiK,
      const interleaver &INTERLEAVER, int blocklength, int repetitions,
      float (*p2mymin)(float,float),
      const float *iprioro, T *data
);


template<class T>
void pccc_decoder(
      const fsm &FSM1, int ST10, int ST1K,
      const fsm &FSM2, int ST20, int ST2K,
      const interleaver &INTERLEAVER, int blocklength, int repetitions,
      float (*p2mymin)(float,float),
      const float *cprioro, T *data
);



#endif