/** CbmMvdStripsDigi.cxx
 **@author V.Friese <v.friese@gsi.de>
 **@since 28.08.2006
 **@version 2.0
 **/


#include "CbmMvdStripsDigi.h"


// -----   Bit fields for charge and time stamp   --------------------------
const Int_t CbmMvdStripsDigi::fgkCharBits = 12;   // in data0
const Int_t CbmMvdStripsDigi::fgkTimeBits = 14;   // in data1
const Int_t CbmMvdStripsDigi::fgkAddrBits = 
  CbmMvdStripsDigi::fgkStatBits +
  CbmMvdStripsDigi::fgkSectBits +
  CbmMvdStripsDigi::fgkSideBits + 
  CbmMvdStripsDigi::fgkChanBits;
// -------------------------------------------------------------------------



// -----   Bit shift for charge and time stamp   ---------------------------
const Int_t CbmMvdStripsDigi::fgkCharShift = CbmMvdStripsDigi::fgkAddrBits;
const Int_t CbmMvdStripsDigi::fgkTimeShift = CbmMvdStripsDigi::fgkCharShift + CbmMvdStripsDigi::fgkCharBits;
// -------------------------------------------------------------------------



// -----   Bit masks for charge and time stamp   ---------------------------
const Long64_t CbmMvdStripsDigi::fgkAddrMask = (1 << CbmMvdStripsDigi::fgkAddrBits) - 1;
const Long64_t CbmMvdStripsDigi::fgkCharMask = (1 << CbmMvdStripsDigi::fgkCharBits) - 1;
const Long64_t CbmMvdStripsDigi::fgkTimeMask = (1 << CbmMvdStripsDigi::fgkTimeBits) - 1;
// -------------------------------------------------------------------------




// -----   Default constructor   -------------------------------------------
CbmMvdStripsDigi::CbmMvdStripsDigi() : fData(0) {
}
// -------------------------------------------------------------------------



// -----   Standard constructor   ------------------------------------------
CbmMvdStripsDigi::CbmMvdStripsDigi(std::vector<Int_t> index, Int_t station, Int_t sector, Int_t side, 
		       Int_t channel, Int_t adc, Int_t time) {
  AddIndex(index);
  fData = ( (DetectorId(station, sector, side, channel) >> 4) & fgkAddrMask )
    | ( (adc  & fgkCharMask) << fgkCharShift )
    | ( (time & fgkTimeMask) << fgkTimeShift ) ;
 
}
// -------------------------------------------------------------------------
CbmMvdStripsDigi::CbmMvdStripsDigi(Int_t index, Int_t station, Int_t sector, Int_t side, 
		       Int_t channel, Int_t adc, Int_t time) {
  AddIndex(index,adc);
  fData = ( (DetectorId(station, sector, side, channel) >> 4) & fgkAddrMask )
    | ( (adc  & fgkCharMask) << fgkCharShift )
    | ( (time & fgkTimeMask) << fgkTimeShift ) ;
 
}



// -----   Destructor   ----------------------------------------------------
CbmMvdStripsDigi::~CbmMvdStripsDigi() { }
// -------------------------------------------------------------------------




// -----   Add charge   ----------------------------------------------------
void CbmMvdStripsDigi::AddAdc(Int_t adc) {
  Int_t maxAdc = (1 << fgkCharBits) - 1;
  Int_t newAdc = GetAdc() + adc;
  if ( newAdc > maxAdc ) newAdc = maxAdc;
  SetAdc(newAdc);
}
// -------------------------------------------------------------------------




// -----   Set new charge   ------------------------------------------------
void CbmMvdStripsDigi::SetAdc(Int_t adc) {

  // First set old charge to zero
  fData = fData & ~(fgkCharMask << fgkCharShift);

  // Now set new charge
  fData = fData | ( (adc & fgkCharMask) << fgkCharShift );

}
// -------------------------------------------------------------------------



ClassImp(CbmMvdStripsDigi)