tpc_encoder.h

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/* -*- c++ -*- */
/*
 * Copyright 2015 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * SPDX-License-Identifier: GPL-3.0-or-later
 *
 */
 
#ifndef INCLUDED_TPC_ENCODER_H
#define INCLUDED_TPC_ENCODER_H
 
#include <gnuradio/fec/encoder.h>
#include <gnuradio/fec/generic_encoder.h>
#include <map>
#include <string>
#include <vector>
 
 
namespace gr {
namespace fec {
 
class FEC_API tpc_encoder : public generic_encoder
{
 
    // private constructor
    tpc_encoder(std::vector<int> row_polys,
                std::vector<int> col_polys,
                int krow,
                int kcol,
                int bval,
                int qval);
 
    // plug into the generic fec api
    void generic_work(void* inBuffer, void* outbuffer) override;
    int get_output_size() override;
    int get_input_size() override;
 
    std::vector<int> d_rowpolys;
    std::vector<int> d_colpolys;
 
    unsigned int d_krow;
    unsigned int d_kcol;
 
    unsigned int d_bval;
    unsigned int d_qval;
 
    // store the state transitions & outputs
    int rowNumStates;
    std::vector<std::vector<int>> rowOutputs;
    std::vector<std::vector<int>> rowNextStates;
    int colNumStates;
    std::vector<std::vector<int>> colOutputs;
    std::vector<std::vector<int>> colNextStates;
 
    std::vector<int> rowTail;
    std::vector<int> colTail;
 
    int rowEncoder_K;
    size_t rowEncoder_n;
    int rowEncoder_m;
    int colEncoder_K;
    size_t colEncoder_n;
    int colEncoder_m;
    int outputSize;
    int inputSize;
 
    // memory allocated for processing
    int inputSizeWithPad;
    std::vector<unsigned char> inputWithPad;
 
    std::vector<std::vector<uint8_t>> rowEncodedBits;
    std::vector<unsigned char> rowToEncode;
    size_t numRowsToEncode;
    std::vector<uint8_t> rowEncoded_block;
 
    std::vector<std::vector<uint8_t>> colEncodedBits;
    std::vector<unsigned char> colToEncode;
    int numColsToEncode;
    std::vector<uint8_t> colEncoded_block;
 
    void block_conv_encode(std::vector<uint8_t>& output,
                           std::vector<uint8_t> input,
                           std::vector<std::vector<int>> transOutputVec,
                           std::vector<std::vector<int>> transNextStateVec,
                           std::vector<int> tail,
                           size_t KK,
                           size_t nn);
 
    FILE* fp;
 
public:
    ~tpc_encoder() override;
    static generic_encoder::sptr make(std::vector<int> row_poly,
                                      std::vector<int> col_poly,
                                      int krow,
                                      int kcol,
                                      int bval,
                                      int qval);
    double rate() override { return (1.0 * get_input_size() / get_output_size()); }
    bool set_frame_size(unsigned int) override { return false; }
};
 
 
} // namespace fec
} // namespace gr
 
#endif /* INCLUDED_TPC_ENCODER_H */