/**
 *
 * \section COPYRIGHT
 *
 * Copyright 2013-2020 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:         sequence.h
 *
 *  Description:  Pseudo Random Sequence generation. Sequences are defined by a length-31 Gold
 *                sequence.
 *
 *  Reference:    3GPP TS 36.211 version 10.0.0 Release 10 Sec. 7.2
 *********************************************************************************************/

#ifndef SRSLTE_SEQUENCE_H
#define SRSLTE_SEQUENCE_H

#include "srslte/config.h"
#include "srslte/phy/common/phy_common.h"

#define SRSLTE_SEQUENCE_MOD(X) ((uint32_t)((X) & (uint64_t)INT32_MAX))

typedef struct SRSLTE_API {
  uint32_t x1;
  uint32_t x2;
} srslte_sequence_state_t;

SRSLTE_API void srslte_sequence_state_init(srslte_sequence_state_t* s, uint32_t seed);

SRSLTE_API void srslte_sequence_state_gen_f(srslte_sequence_state_t* s, float value, float* out, uint32_t length);

SRSLTE_API void srslte_sequence_state_advance(srslte_sequence_state_t* s, uint32_t length);

typedef struct SRSLTE_API {
  uint8_t* c;
  uint8_t* c_bytes;
  float*   c_float;
  short*   c_short;
  int8_t*  c_char;
  uint32_t cur_len;
  uint32_t max_len;
} srslte_sequence_t;

SRSLTE_API int srslte_sequence_init(srslte_sequence_t* q, uint32_t len);

SRSLTE_API void srslte_sequence_free(srslte_sequence_t* q);

SRSLTE_API int srslte_sequence_LTE_pr(srslte_sequence_t* q, uint32_t len, uint32_t seed);

SRSLTE_API int srslte_sequence_set_LTE_pr(srslte_sequence_t* q, uint32_t len, uint32_t seed);

SRSLTE_API void srslte_sequence_apply_f(const float* in, float* out, uint32_t length, uint32_t seed);

SRSLTE_API void srslte_sequence_apply_s(const int16_t* in, int16_t* out, uint32_t length, uint32_t seed);

SRSLTE_API void srslte_sequence_apply_c(const int8_t* in, int8_t* out, uint32_t length, uint32_t seed);

SRSLTE_API void srslte_sequence_apply_bit(const uint8_t* in, uint8_t* out, uint32_t length, uint32_t seed);

SRSLTE_API void srslte_sequence_apply_bit_packed(const uint8_t* in, uint8_t* out, uint32_t length, uint32_t seed);

SRSLTE_API int srslte_sequence_pbch(srslte_sequence_t* seq, srslte_cp_t cp, uint32_t cell_id);

SRSLTE_API int srslte_sequence_pcfich(srslte_sequence_t* seq, uint32_t nslot, uint32_t cell_id);

SRSLTE_API int srslte_sequence_phich(srslte_sequence_t* seq, uint32_t nslot, uint32_t cell_id);

SRSLTE_API int srslte_sequence_pdcch(srslte_sequence_t* seq, uint32_t nslot, uint32_t cell_id, uint32_t len);

SRSLTE_API int
srslte_sequence_pdsch(srslte_sequence_t* seq, uint16_t rnti, int q, uint32_t nslot, uint32_t cell_id, uint32_t len);

SRSLTE_API int
srslte_sequence_pusch(srslte_sequence_t* seq, uint16_t rnti, uint32_t nslot, uint32_t cell_id, uint32_t len);

SRSLTE_API int srslte_sequence_pucch(srslte_sequence_t* seq, uint16_t rnti, uint32_t nslot, uint32_t cell_id);

SRSLTE_API int srslte_sequence_pmch(srslte_sequence_t* seq, uint32_t nslot, uint32_t mbsfn_id, uint32_t len);

SRSLTE_API int srslte_sequence_npbch(srslte_sequence_t* seq, srslte_cp_t cp, uint32_t cell_id);

SRSLTE_API int srslte_sequence_npbch_r14(srslte_sequence_t* seq, uint32_t n_id_ncell, uint32_t nf);

SRSLTE_API int srslte_sequence_npdsch(srslte_sequence_t* seq,
                                      uint16_t           rnti,
                                      int                q,
                                      uint32_t           nf,
                                      uint32_t           nslot,
                                      uint32_t           cell_id,
                                      uint32_t           len);

SRSLTE_API int srslte_sequence_npdsch_bcch_r14(srslte_sequence_t* seq, uint32_t nf, uint32_t n_id_ncell, uint32_t len);

SRSLTE_API int srslte_sequence_npdcch(srslte_sequence_t* seq, uint32_t nslot, uint32_t cell_id, uint32_t len);

SRSLTE_API int srslte_sequence_npusch(srslte_sequence_t* seq,
                                      uint16_t           rnti,
                                      uint32_t           nf,
                                      uint32_t           nslot,
                                      uint32_t           cell_id,
                                      uint32_t           len);

SRSLTE_API int srslte_sequence_nprach(srslte_sequence_t* seq, uint32_t cell_id);

#endif // SRSLTE_SEQUENCE_H