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/* -*- c++ -*- */
/*
* Copyright 2013-2014 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#ifndef INCLUDED_FEC_CC_DECODER_IMPL_H
#define INCLUDED_FEC_CC_DECODER_IMPL_H
#include <gnuradio/fec/cc_decoder.h>
#include <volk/volk_alloc.hh>
#include <map>
#include <string>
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() override;
int get_input_size() override;
int get_history() override;
float get_shift() override;
int get_input_item_size() override;
const char* get_input_conversion() override;
// 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();
volk::vector<unsigned char> d_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;
volk::vector<unsigned char> d_managed_in;
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() override;
// Disable copy because of the raw pointers.
cc_decoder_impl(const cc_decoder_impl&) = delete;
cc_decoder_impl& operator=(const cc_decoder_impl&) = delete;
void generic_work(void* inbuffer, void* outbuffer) override;
bool set_frame_size(unsigned int frame_size) override;
double rate() override;
};
} /* namespace code */
} /* namespace fec */
} /* namespace gr */
#endif /* INCLUDED_FEC_CC_DECODER_IMPL_H */
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