srsRAN_4G/lib/include/srsran/phy/fec/turbo/turbodecoder_gen.h

/**
 *
 * \section COPYRIGHT
 *
 * Copyright 2013-2021 Software Radio Systems Limited
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the LICENSE file which can be found at the top level of
 * the distribution.
 *
 */

/**********************************************************************************************
 *  File:         turbodecoder.h
 *
 *  Description:  Turbo Decoder.
 *                Parallel Concatenated Convolutional Code (PCCC) with two 8-state constituent
 *                encoders and one turbo code internal interleaver. The coding rate of turbo
 *                encoder is 1/3.
 *                MAP_GEN is the MAX-LOG-MAP generic implementation of the decoder.
 *
 *  Reference:    3GPP TS 36.212 version 10.0.0 Release 10 Sec. 5.1.3.2
 *********************************************************************************************/

#ifndef SRSRAN_TURBODECODER_GEN_H
#define SRSRAN_TURBODECODER_GEN_H

#include "srsran/config.h"
#include "srsran/phy/fec/cbsegm.h"
#include "srsran/phy/fec/turbo/tc_interl.h"
#define SRSRAN_TCOD_RATE 3
#define SRSRAN_TCOD_TOTALTAIL 12

#define SRSRAN_TCOD_MAX_LEN_CB 6144

typedef struct SRSRAN_API {
  uint32_t max_long_cb;
  int16_t* beta;
} tdec_gen_t;

int  tdec_gen_init(void** h, uint32_t max_long_cb);
void tdec_gen_free(void* h);
void tdec_gen_dec(void* h, int16_t* input, int16_t* app, int16_t* parity, int16_t* output, uint32_t long_cb);
void tdec_gen_extract_input(int16_t* input,
                            int16_t* syst,
                            int16_t* parity0,
                            int16_t* parity1,
                            int16_t* app2,
                            uint32_t long_cb);
void tdec_gen_decision_byte(int16_t* app1, uint8_t* output, uint32_t long_cb);

#endif // SRSRAN_TURBODECODER_GEN_H