/*
 * Copyright 2013-2019 Software Radio Systems Limited
 *
 * This file is part of srsLTE.
 *
 * srsLTE is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of
 * the License, or (at your option) any later version.
 *
 * srsLTE is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * A copy of the GNU Affero General Public License can be found in
 * the LICENSE file in the top-level directory of this distribution
 * and at http://www.gnu.org/licenses/.
 *
 */

#ifndef SRSUE_PRACH_H
#define SRSUE_PRACH_H

#include <string.h>

#include "srslte/srslte.h"
#include "srslte/radio/radio.h"
#include "srslte/common/log.h"
#include "srslte/interfaces/ue_interfaces.h"

namespace srsue {

  class prach {
  public: 
    prach() {
      bzero(&prach_obj, sizeof(srslte_prach_t));
      bzero(&cell, sizeof(srslte_cell_t));
      bzero(&cfo_h, sizeof(srslte_cfo_t));

      transmitted_tti   = 0;
      target_power_dbm  = 0;
      mem_initiated     = false;
      cell_initiated    = false;
      signal_buffer     = NULL;   
    }
    ~prach();
    void           init(uint32_t max_prb, srslte::log* log_h);
    void           stop();
    bool           set_cell(srslte_cell_t cell, srslte_prach_cfg_t prach_cfg);
    bool           prepare_to_send(uint32_t preamble_idx, int allowed_subframe = -1, float target_power_dbm = -1);
    bool           is_ready_to_send(uint32_t current_tti);
    bool           is_pending();
    cf_t*          generate(float cfo, uint32_t *nof_sf, float *target_power = NULL);

    phy_interface_mac::prach_info_t get_info();

  private:
    const static int MAX_LEN_SF = 3;

    srslte::log   *log_h;
    int            preamble_idx;  
    int            allowed_subframe; 
    bool           mem_initiated;
    bool           cell_initiated;
    uint32_t       len;
    cf_t*          buffer[12][64];
    srslte_prach_t prach_obj;
    int            transmitted_tti;
    srslte_cell_t  cell;
    cf_t          *signal_buffer;
    srslte_cfo_t   cfo_h; 
    float          target_power_dbm;
    
  };

} // namespace srsue

#endif // SRSUE_PRACH_H