crc.h

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// 
// SPUC - Signal processing using C++ - A DSP library
/*---------------------------------------------------------------------------*
 *                                   IT++                                    *
 *---------------------------------------------------------------------------*
 * Copyright (c) 1995-2002 by Tony Ottosson, Thomas Eriksson, Pål Frenger,   *
 * Tobias Ringström, and Jonas Samuelsson.                                   *
 *                                                                           *
 * Permission to use, copy, modify, and distribute this software and its     *
 * documentation under the terms of the GNU General Public License is hereby *
 * granted. No representations are made about the suitability of this        *
 * software for any purpose. It is provided "as is" without expressed or     *
 * implied warranty. See the GNU General Public License for more details.    *
 *---------------------------------------------------------------------------*/

#ifndef __crc_h
#define __crc_h

#include <vector.h>
#include <matrix.h>
#include <string>
namespace SPUC {
//using namespace std;
class CRC_Code {
 public:

  CRC_Code() { reverse_parity = false; }

  CRC_Code(const string &code) { reverse_parity = false; set_code(code); }

  void set_generator(const bvec &poly);

  void set_code(const string &code);

  void parity(const bvec &in_bits, bvec &out);

  bool check_parity(const bvec &coded_bits);

  void encode(const bvec &in_bits, bvec &out);

  bvec encode(const bvec &in_bits);

  bool decode(const bvec &coded_bits, bvec &out);

  bool decode(bvec &bits);

 private:
  bool reverse_parity;
  bvec polynomial;
  int no_parity;
};
} 
#endif // __crc_h

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