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/* -*- c++ -*- */
/*
* Copyright 2015 Free Software Foundation, Inc.
*
* This 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.
*
* This software 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 this software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_ldpc_G_matrix_impl_H
#define INCLUDED_ldpc_G_matrix_impl_H
#include <gsl/gsl_blas.h>
#include <gsl/gsl_linalg.h>
#include <gsl/gsl_permutation.h>
#include <gsl/gsl_randist.h>
#include "fec_mtrx_impl.h"
#include <gnuradio/fec/ldpc_G_matrix.h>
#include <gnuradio/fec/ldpc_H_matrix.h>
#include <gnuradio/logger.h>
namespace gr {
namespace fec {
namespace code {
/*!
* \brief Class for storing H or G matrix
* \ingroup error_coding_blk
*
* \details
* This class stores a GSL matrix variable, specifically
* either a:
*
* 1) Generator matrix, G, in the standard format G = [I P],
* where I is an identity matrix and P is the parity
* submatrix.
*
* or
*
* 2) Parity matrix, H, in the standard format H = [P' I],
* where P' is the transpose of the parity submatrix and I
* is an identity matrix.
*
* This variable can used by the ldpc_gen_mtrx_encoder and
* ldpc_bit_flip_decoder classes.
*/
class ldpc_G_matrix_impl : public fec_mtrx_impl, public ldpc_G_matrix
{
private:
// GSL matrix structure for transpose of G
gsl_matrix* d_G_transp_ptr;
gsl_matrix* d_H_obj;
//! Get the generator matrix (used during encoding)
const gsl_matrix* G_transpose() const;
gr::logger_ptr d_logger;
gr::logger_ptr d_debug_logger;
public:
ldpc_G_matrix_impl(const std::string filename);
void encode(unsigned char* outbuffer, const unsigned char* inbuffer) const;
void decode(unsigned char* outbuffer,
const float* inbuffer,
unsigned int frame_size,
unsigned int max_iterations) const;
unsigned int n() const { return fec_mtrx_impl::n(); }
unsigned int k() const { return fec_mtrx_impl::k(); }
gsl_matrix* generate_H();
gr::fec::code::fec_mtrx_sptr get_base_sptr();
/*!
* \brief Destructor
* \details
* Calls the gsl_matrix_free function to free memory.
*/
virtual ~ldpc_G_matrix_impl();
};
} // namespace code
} // namespace fec
} // namespace gr
#endif /* INCLUDED_ldpc_G_matrix_impl_H */
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