/*******************************************************************************
    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.


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    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
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 *******************************************************************************/

/*! \file PHY/LTE_TRANSPORT/pilots_mbsfn.c
* \brief Top-level routines for generating DL mbsfn reference signals 
* \authors S. Paranche, R. Knopp
* \date 2012
* \version 0.1
* \company Eurecom
* \email: knopp@eurecom.fr
* \note
* \warning
*/
//#include "defs.h"
#include "PHY/defs.h"

    
int generate_mbsfn_pilot(PHY_VARS_eNB *phy_vars_eNB,
			 mod_sym_t **txdataF,
			 int16_t amp,
			 uint16_t subframe) {

  LTE_DL_FRAME_PARMS *frame_parms = &phy_vars_eNB->lte_frame_parms;  
  uint32_t subframe_offset,Nsymb,samples_per_symbol;

  

  if (subframe<0 || subframe>= 10) {
    msg("generate_mbsfn_pilots_subframe: subframe not in range (%d)\n",subframe);
    return(-1);
  }

  Nsymb = (frame_parms->Ncp==NORMAL) ? 7 : 6;
 
  subframe_offset = subframe*frame_parms->ofdm_symbol_size*Nsymb<<1;
  samples_per_symbol = frame_parms->ofdm_symbol_size;
    
    //    printf("tti %d : offset %d (slot %d)\n",tti,tti_offset,slot_offset);
    //Generate Pilots
    
    //antenna 4 symbol 2 Slot 0
  lte_dl_mbsfn(phy_vars_eNB,
	       &txdataF[0][subframe_offset+(2*samples_per_symbol)],
	       amp,
	       subframe,
	       0);

    
    
    //antenna 4 symbol 0 slot 1
  lte_dl_mbsfn(phy_vars_eNB,
	       &txdataF[0][subframe_offset+(6*samples_per_symbol)],
	       amp,
	       subframe,
	       1);
		   
    //antenna 4 symbol 4 slot 1
  lte_dl_mbsfn(phy_vars_eNB,
	       &txdataF[0][subframe_offset+(10*samples_per_symbol)],
	       amp,
	       subframe,
	       2);
     
  return(0);  
}

  
