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///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2016 Edouard Griffiths, F4EXB. //
// //
// This program 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 as version 3 of the License, or //
// //
// This program 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 V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef FEC_H_
#define FEC_H_
#include "export.h"
namespace DSDcc
{
class DSDCC_API Hamming_7_4
{
public:
Hamming_7_4();
~Hamming_7_4();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits);
private:
unsigned char m_corr[8]; //!< single bit error correction by syndrome index
static const unsigned char m_G[7*4]; //!< Generator matrix of bits
static const unsigned char m_H[7*3]; //!< Parity check matrix of bits
};
class DSDCC_API Hamming_12_8
{
public:
Hamming_12_8();
~Hamming_12_8();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits, unsigned char *decodedBits, int nbCodewords);
private:
unsigned char m_corr[16]; //!< single bit error correction by syndrome index
static const unsigned char m_G[12*8]; //!< Generator matrix of bits
static const unsigned char m_H[12*4]; //!< Parity check matrix of bits
};
class DSDCC_API Hamming_15_11
{
public:
Hamming_15_11();
~Hamming_15_11();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits, unsigned char *decodedBits, int nbCodewords);
private:
unsigned char m_corr[16]; //!< single bit error correction by syndrome index
static const unsigned char m_G[15*11]; //!< Generator matrix of bits
static const unsigned char m_H[15*4]; //!< Parity check matrix of bits
};
class DSDCC_API Hamming_16_11_4
{
public:
Hamming_16_11_4();
~Hamming_16_11_4();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits, unsigned char *decodedBits, int nbCodewords);
private:
unsigned char m_corr[32]; //!< single bit error correction by syndrome index
static const unsigned char m_G[16*11]; //!< Generator matrix of bits
static const unsigned char m_H[16*5]; //!< Parity check matrix of bits
};
class DSDCC_API Golay_20_8
{
public:
Golay_20_8();
~Golay_20_8();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits);
private:
unsigned char m_corr[4096][3]; //!< up to 3 bit error correction by syndrome index
static const unsigned char m_G[20*8]; //!< Generator matrix of bits
static const unsigned char m_H[20*12]; //!< Parity check matrix of bits
};
class DSDCC_API Golay_23_12
{
public:
Golay_23_12();
~Golay_23_12();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits);
private:
unsigned char m_corr[2048][3]; //!< up to 3 bit error correction by syndrome index
static const unsigned char m_G[23*12]; //!< Generator matrix of bits
static const unsigned char m_H[23*11]; //!< Parity check matrix of bits
};
class DSDCC_API Golay_24_12
{
public:
Golay_24_12();
~Golay_24_12();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits);
private:
unsigned char m_corr[4096][3]; //!< up to 3 bit error correction by syndrome index
static const unsigned char m_G[24*12]; //!< Generator matrix of bits
static const unsigned char m_H[24*12]; //!< Parity check matrix of bits
};
class DSDCC_API QR_16_7_6
{
public:
QR_16_7_6();
~QR_16_7_6();
void init();
void encode(unsigned char *origBits, unsigned char *encodedBits);
bool decode(unsigned char *rxBits);
private:
unsigned char m_corr[512][2]; //!< up to 2 bit error correction by syndrome index
static const unsigned char m_G[16*7]; //!< Generator matrix of bits
static const unsigned char m_H[16*9]; //!< Parity check matrix of bits
};
} // namespace DSDcc
#endif /* FEC_H_ */
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