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/* -*- c++ -*- */
/*
* Copyright 2013-2014 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_FEC_CC_DECODER_IMPL_H
#define INCLUDED_FEC_CC_DECODER_IMPL_H
#include <map>
#include <string>
#include <gnuradio/fec/cc_decoder.h>
namespace gr {
namespace fec {
namespace code {
class FEC_API cc_decoder_impl : public cc_decoder
{
private:
//plug into the generic fec api
int get_output_size();
int get_input_size();
int get_history();
float get_shift();
int get_input_item_size();
const char* get_input_conversion();
//const char* get_output_conversion();
//everything else...
void create_viterbi();
int init_viterbi(struct v* vp, int starting_state);
int init_viterbi_unbiased(struct v* vp);
int update_viterbi_blk(unsigned char* syms, int nbits);
int chainback_viterbi(unsigned char* data, unsigned int nbits,
unsigned int endstate, unsigned int tailsize);
int find_endstate();
unsigned char *Branchtab;
unsigned char Partab[256];
int d_ADDSHIFT;
int d_SUBSHIFT;
conv_kernel d_kernel;
unsigned int d_max_frame_size;
unsigned int d_frame_size;
unsigned int d_k;
unsigned int d_rate;
std::vector<int> d_polys;
cc_mode_t d_mode;
int d_padding;
struct v* d_vp;
unsigned char* d_managed_in;
unsigned int d_managed_in_size;
int d_numstates;
int d_decision_t_size;
int *d_start_state;
int d_start_state_chaining;
int d_start_state_nonchaining;
int *d_end_state;
int d_end_state_chaining;
int d_end_state_nonchaining;
unsigned int d_veclen;
int parity(int x);
int parityb(unsigned char x);
void partab_init(void);
public:
cc_decoder_impl(int frame_size, int k,
int rate, std::vector<int> polys,
int start_state = 0, int end_state = -1,
cc_mode_t mode=CC_STREAMING, bool padded=false);
~cc_decoder_impl();
void generic_work(void *inbuffer, void *outbuffer);
bool set_frame_size(unsigned int frame_size);
double rate();
};
} /* namespace code */
} /* namespace fec */
} /* namespace gr */
#endif /* INCLUDED_FEC_CC_DECODER_IMPL_H */
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