/*******************************************************************************
    OpenAirInterface 
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface 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 General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is 
   included in this distribution in the file called "COPYING". If not, 
   see <http://www.gnu.org/licenses/>.

  Contact Information
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@eurecom.fr
  
  Address      : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE

 *******************************************************************************/
extern unsigned int threegpplte_interleaver_output;
extern unsigned int threegpplte_interleaver_tmp;

extern inline void threegpplte_interleaver_reset(void) {
  threegpplte_interleaver_output = 0;
  threegpplte_interleaver_tmp    = 0;
}

extern inline unsigned short threegpplte_interleaver(unsigned short f1,
					      unsigned short f2,
					      unsigned short K) {

  threegpplte_interleaver_tmp = (threegpplte_interleaver_tmp+(f2<<1));

  threegpplte_interleaver_output = (threegpplte_interleaver_output + threegpplte_interleaver_tmp + f1 - f2)%K;

#ifdef DEBUG_TURBO_ENCODER
  printf("Interleaver output %d\n",threegpplte_interleaver_output);
#endif
  return(threegpplte_interleaver_output);
}


extern inline short threegpp_interleaver_parameters(unsigned short bytes_per_codeword) {
  if (bytes_per_codeword<=64)
    return (bytes_per_codeword-5);
  else if (bytes_per_codeword <=128)
    return (59 + ((bytes_per_codeword-64)>>1));
  else if (bytes_per_codeword <= 256)
    return (91 + ((bytes_per_codeword-128)>>2));
  else if (bytes_per_codeword <= 768)
    return (123 + ((bytes_per_codeword-256)>>3));
  else {
#ifdef DEBUG_TURBO_ENCODER
    printf("Illegal codeword size !!!\n");
#endif 
    return(-1);
  }
}
