trellissoftout.h

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/***************************************************************************
                          trellissoftout.h  -  description
                             -------------------
    begin                : Mit Aug 6 2003
    copyright            : (C) 2003 by Peter Haase
    email                : p.haase@tuhh.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This library is free software; you can redistribute it and/or         *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library 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     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the Free Software   *
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston,                 *
 *   MA  02111-1307  USA                                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef TRELLISSOFTOUT_H
#define TRELLISSOFTOUT_H

#include <iostream>
#include <iomanip>
#include <complex>
#include <stdexcept>
#include <algorithm>
#include <memory>


#include "signals.h"
#include "misc.h"
#include "phbib.h"
#include "trellis.h"




namespace simthlib
{


class TrellisSoftoutAlgorithm 
{

   public:

    TrellisSoftoutAlgorithm(std::auto_ptr<simthlib::Trellis> usedTrellis);

    virtual ~TrellisSoftoutAlgorithm( );

    virtual void softout4Output(const simth::LlvSeq &metr, simth::LlrSeq* softout, const simth::LlrSeq* apri = NULL) = 0;

    virtual void softout4Input(const simth::LlvSeq &metr, simth::LlrSeq* softout, const simth::LlrSeq* apri = NULL) = 0;


    virtual void decode(const simth::LlvSeq &metr, simth::BitSeq* decodedData, const simth::LlrSeq* apri = NULL) = 0;


    //virtual void reducedSoftout4Output(const simth::LlvSeq &metr, simth::LlrSeq* softout, const simth::LlrSeq* apri,
    //                                  int startState, int endState) = 0;

    const simthlib::Trellis* getTrellis() {return usedTrellis_;}
    
  protected:

    simthlib::Trellis* usedTrellis() {return usedTrellis_;}

    size_t pathLength() const {return pathLength_;}

    void setPathLength(int newPathLength);

  private:

    simthlib::Trellis* usedTrellis_;    

    size_t pathLength_;

    void invariante() const;
};


inline void TrellisSoftoutAlgorithm::invariante() const
{
  if(DEBUG){
  }
}


inline void TrellisSoftoutAlgorithm::setPathLength(int newPathLength)
{
  pathLength_ = newPathLength;
  invariante();
}


namespace trellissoftout{

enum softoutalgorithmmode {SOVA, MAXLOGMAP, LOGMAP};

enum sova_type {CODER_IN, CODER_OUT};


std::auto_ptr<TrellisSoftoutAlgorithm> makeSoftoutAlgorithm(softoutalgorithmmode mode, int mem,
                                                      int inSymbols, int outSymbols);
std::auto_ptr<TrellisSoftoutAlgorithm> makeSoftoutAlgorithm(softoutalgorithmmode mode, int inSymbolsPerStep,
                                                      const simth::checkedVector<int>& polynomials);
std::auto_ptr<TrellisSoftoutAlgorithm> makeSoftoutAlgorithm(softoutalgorithmmode mode, int inSymbolsPerStep,
              const simth::checkedVector<int>& polynomials, int recursivePolynomial, bool systematic);

std::auto_ptr<TrellisSoftoutAlgorithm> makeSoftoutAlgorithm(softoutalgorithmmode mode, int inSymbolsPerStep,
              int bitsPerSymbol, simthlib::ConvCodeTrellis::StartingMode startingMode, simthlib::map_type mappMode, 
              const simth::checkedVector<int>& polynomials, int recursivePolynomial);
              
std::auto_ptr<TrellisSoftoutAlgorithm> makeExplicitSoftoutAlgorithm(softoutalgorithmmode mode,int inputBitsPerStep, int outputBitsPerStep, 
                                    simthlib::ConvCodeTrellis::StartingMode startingMode, simthlib::map_type mappMode);


}

}
      
#endif

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