/**
 *
 * \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.
 *
 */

#ifndef SRSRAN_RF_TIMESTAMP_H
#define SRSRAN_RF_TIMESTAMP_H

#include "srsran/interfaces/radio_interfaces.h"

namespace srsran {

/**
 * Implemenation of the rf_buffer_interface for the current radio implementation which uses flat arrays.
 * @see rf_buffer_interface
 * @see radio
 *
 */
class rf_timestamp_t : public rf_timestamp_interface
{
public:
  /**
   * Default constructor, all timestamps are zero by default
   */
  rf_timestamp_t() = default;

  /**
   * Copy constructor
   * @param other the other object to copy
   */
  rf_timestamp_t(const rf_timestamp_t& other) { copy(other); }

  /**
   * Default destructor
   */
  ~rf_timestamp_t() = default;

  /**
   * Gets a timestamp by reference
   * @return Given timestamp of the indicated device if the index is bounded, otherwise it returns the default timestamp
   */
  const srsran_timestamp_t& get(uint32_t idx) const override
  {
    if (idx >= SRSRAN_MAX_CHANNELS) {
      return default_ts;
    }

    return timestamps[idx];
  }

  /**
   * Get the timestamp array pointer
   * @return timestamp pointer with the value if the channel index is bounded. Otherwise, returns nullptr
   */
  srsran_timestamp_t* get_ptr(uint32_t idx) override
  {
    if (idx >= SRSRAN_MAX_CHANNELS) {
      return nullptr;
    }
    return &timestamps[idx];
  }

  /**
   * Add a given amount of seconds to all the timestamps
   * @param secs number of seconds
   */
  void add(double secs) override
  {
    for (srsran_timestamp_t& ts : timestamps) {
      srsran_timestamp_add(&ts, 0, secs);
    }
  }

  /**
   * Subtract a given amount of seconds to all the timestamps
   * @param secs number of seconds
   */
  void sub(double secs) override
  {
    for (srsran_timestamp_t& ts : timestamps) {
      srsran_timestamp_sub(&ts, 0, secs);
    }
  }

private:
  const srsran_timestamp_t                            default_ts = {};
  std::array<srsran_timestamp_t, SRSRAN_MAX_CHANNELS> timestamps = {};
};
} // namespace srsran

#endif // SRSRAN_RF_TIMESTAMP_H