/**
 *
 * \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.
 *
 */

#ifndef SRSLTE_PUSCH_NR_H
#define SRSLTE_PUSCH_NR_H

#include "srslte/config.h"
#include "srslte/phy/ch_estimation/dmrs_sch.h"
#include "srslte/phy/modem/evm.h"
#include "srslte/phy/modem/modem_table.h"
#include "srslte/phy/phch/phch_cfg_nr.h"
#include "srslte/phy/phch/regs.h"
#include "srslte/phy/phch/sch_nr.h"
#include "srslte/phy/phch/uci_nr.h"
#include "srslte/phy/scrambling/scrambling.h"

/**
 * @brief PUSCH encoder and decoder initialization arguments
 */
typedef struct SRSLTE_API {
  srslte_sch_nr_args_t sch;
  srslte_uci_nr_args_t uci;
  bool                 measure_evm;
  bool                 measure_time;
} srslte_pusch_nr_args_t;

/**
 * @brief PDSCH NR object
 */
typedef struct SRSLTE_API {
  uint32_t             max_prb;                         ///< Maximum number of allocated prb
  uint32_t             max_layers;                      ///< Maximum number of allocated layers
  uint32_t             max_cw;                          ///< Maximum number of allocated code words
  srslte_carrier_nr_t  carrier;                         ///< NR carrier configuration
  srslte_sch_nr_t      sch;                             ///< SCH Encoder/Decoder Object
  srslte_uci_nr_t      uci;                             ///< UCI Encoder/Decoder Object
  uint8_t*             b[SRSLTE_MAX_CODEWORDS];         ///< SCH Encoded and scrambled data
  cf_t*                d[SRSLTE_MAX_CODEWORDS];         ///< PDSCH modulated bits
  cf_t*                x[SRSLTE_MAX_LAYERS_NR];         ///< PDSCH modulated bits
  srslte_modem_table_t modem_tables[SRSLTE_MOD_NITEMS]; ///< Modulator tables
  srslte_evm_buffer_t* evm_buffer;
  bool                 meas_time_en;
  uint32_t             meas_time_us;
  srslte_uci_cfg_nr_t  uci_cfg;   ///< Internal UCI bits configuration
  uint8_t*             g_ulsch;   ///< Temporal Encoded UL-SCH data
  uint8_t*             g_ack;     ///< Temporal Encoded HARQ-ACK bits
  uint8_t*             g_csi1;    ///< Temporal Encoded CSI part 1 bits
  uint8_t*             g_csi2;    ///< Temporal Encoded CSI part 2 bits
  uint32_t*            pos_ulsch; ///< Reserved resource elements for HARQ-ACK multiplexing position
  uint32_t*            pos_ack;   ///< Reserved resource elements for HARQ-ACK multiplexing position
  uint32_t*            pos_csi1;  ///< Reserved resource elements for CSI part 1 multiplexing position
  uint32_t*            pos_csi2;  ///< Reserved resource elements for CSI part 1 multiplexing position
  bool                 uci_mux;   ///< Set to true if PUSCH needs to multiplex UCI
  uint32_t             G_ack;     ///< Number of encoded HARQ-ACK bits
  uint32_t             G_csi1;    ///< Number of encoded CSI part 1 bits
  uint32_t             G_csi2;    ///< Number of encoded CSI part 2 bits
  uint32_t             G_ulsch;   ///< Number of encoded shared channel
} srslte_pusch_nr_t;

/**
 * @brief Groups NR-PUSCH data for transmission
 */
typedef struct {
  uint8_t*              payload; ///< SCH payload
  srslte_uci_value_nr_t uci;     ///< UCI payload
} srslte_pusch_data_nr_t;

/**
 * @brief Groups NR-PUSCH data for reception
 */
typedef struct {
  uint8_t*              payload; ///< SCH payload
  srslte_uci_value_nr_t uci;     ///< UCI payload
  bool                  crc;     ///< CRC match
  float                 evm;     ///< EVM measurement if configured through arguments
} srslte_pusch_res_nr_t;

SRSLTE_API int srslte_pusch_nr_init_gnb(srslte_pusch_nr_t* q, const srslte_pusch_nr_args_t* args);

SRSLTE_API int srslte_pusch_nr_init_ue(srslte_pusch_nr_t* q, const srslte_pusch_nr_args_t* args);

SRSLTE_API void srslte_pusch_nr_free(srslte_pusch_nr_t* q);

SRSLTE_API int srslte_pusch_nr_set_carrier(srslte_pusch_nr_t* q, const srslte_carrier_nr_t* carrier);

SRSLTE_API int srslte_pusch_nr_encode(srslte_pusch_nr_t*            q,
                                      const srslte_sch_cfg_nr_t*    cfg,
                                      const srslte_sch_grant_nr_t*  grant,
                                      const srslte_pusch_data_nr_t* data,
                                      cf_t*                         sf_symbols[SRSLTE_MAX_PORTS]);

SRSLTE_API int srslte_pusch_nr_decode(srslte_pusch_nr_t*           q,
                                      const srslte_sch_cfg_nr_t*   cfg,
                                      const srslte_sch_grant_nr_t* grant,
                                      srslte_chest_dl_res_t*       channel,
                                      cf_t*                        sf_symbols[SRSLTE_MAX_PORTS],
                                      srslte_pusch_res_nr_t        data[SRSLTE_MAX_TB]);

SRSLTE_API uint32_t srslte_pusch_nr_rx_info(const srslte_pusch_nr_t*     q,
                                            const srslte_sch_cfg_nr_t*   cfg,
                                            const srslte_sch_grant_nr_t* grant,
                                            const srslte_pusch_res_nr_t* res,
                                            char*                        str,
                                            uint32_t                     str_len);

SRSLTE_API uint32_t srslte_pusch_nr_tx_info(const srslte_pusch_nr_t*     q,
                                            const srslte_sch_cfg_nr_t*   cfg,
                                            const srslte_sch_grant_nr_t* grant,
                                            char*                        str,
                                            uint32_t                     str_len);

#endif // SRSLTE_PUSCH_NR_H