srsRAN_4G/srsue/hdr/phy/search.h

/**
 *
 * \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 SRSUE_SEARCH_H
#define SRSUE_SEARCH_H

#include "srslte/interfaces/ue_interfaces.h"
#include "srslte/radio/radio.h"
#include "srslte/srslog/srslog.h"
#include "srslte/srslte.h"

namespace srsue {

class search_callback
{
public:
  virtual int                          radio_recv_fnc(srslte::rf_buffer_t&, srslte_timestamp_t* rx_time) = 0;
  virtual void                         set_ue_sync_opts(srslte_ue_sync_t* q, float cfo)                  = 0;
  virtual srslte::radio_interface_phy* get_radio()                                                       = 0;
  virtual void                         set_rx_gain(float gain)                                           = 0;
};

// Class to run cell search
class search
{
public:
  typedef enum { CELL_NOT_FOUND, CELL_FOUND, ERROR, TIMEOUT } ret_code;

  explicit search(srslog::basic_logger& logger) : logger(logger) {}
  ~search();
  void     init(srslte::rf_buffer_t& buffer_, uint32_t nof_rx_channels, search_callback* parent);
  void     reset();
  float    get_last_cfo();
  void     set_agc_enable(bool enable);
  ret_code run(srslte_cell_t* cell, std::array<uint8_t, SRSLTE_BCH_PAYLOAD_LEN>& bch_payload);

private:
  search_callback*       p = nullptr;
  srslog::basic_logger&  logger;
  srslte::rf_buffer_t    buffer       = {};
  srslte_ue_cellsearch_t cs           = {};
  srslte_ue_mib_sync_t   ue_mib_sync  = {};
  int                    force_N_id_2 = 0;
};

}; // namespace srsue

#endif // SRSUE_SEARCH_H