interleaver_impl.h

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#ifndef INCLUDED_LORA_INTERLEAVER_IMPL_H
#define INCLUDED_LORA_INTERLEAVER_IMPL_H
 
#include <lora_sdr/interleaver.h>
// #define GRLORA_DEBUG
 
namespace gr {
namespace lora_sdr {
 
class interleaver_impl : public interleaver {
private:
  /**
   * @brief Transmission coding rate
   *
   */
  uint8_t m_cr;
 
  /**
   * @brief Transmission spreading factor
   *
   */
  uint8_t m_sf;
 
  /**
   * @brief variable that counts the number of codewords
   *
   */
  uint32_t cw_cnt;
 
  /**
   * @brief length of the frame in number of items
   *
   */
  int m_frame_len;
 
public:
  /**
   * @brief Construct a new interleaver impl object
   *
   * @param cr coding rate
   * @param sf sampling rate
   */
  interleaver_impl(uint8_t cr, uint8_t sf);
 
  /**
   * @brief Destroy the interleaver impl object
   *
   */
  ~interleaver_impl();
 
  /**
   * @brief Standard gnuradio function to ensure a number of input items are
   * received before continuing
   *
   * @param noutput_items : number of input items
   * @param ninput_items_required : number of requires input items = 1
   */
  void forecast(int noutput_items, gr_vector_int &ninput_items_required);
  
  /**
   * @brief Main function that does the actual computation of the interleaver.
   * 
   *
   * @param noutput_items : number of output items
   * @param ninput_items : number of input items
   * @param input_items : the data of the input items (i.e hamming encoding stage)
   * @param output_items : output data
   * @return int
   */
  int general_work(int noutput_items, gr_vector_int &ninput_items,
                   gr_vector_const_void_star &input_items,
                   gr_vector_void_star &output_items);
};
 
} // namespace lora_sdr
} // namespace gr
 
#endif /* INCLUDED_LORA_INTERLEAVER_IMPL_H */