#ifndef ALIT0PARAMETERS_H
#define ALIT0PARAMETERS_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights
 * reserved. 
 *
 * Latest changes by Christian Holm Christensen <cholm@nbi.dk>
 *
 * See cxx source for full Copyright notice                               
 */

//____________________________________________________________________
//
//  Singleton class to handle various parameters of the
//  T0 - T0
//  Should get data fromm Conditions DB.
//
# include <TNamed.h>
# include <TF1.h>
# include <TGraph.h>
#include <TObjArray.h>
class AliT0CalibData;
class AliCDBEntry;

class AliT0Parameters : public TNamed
{
public:
  static AliT0Parameters* Instance();

  void Init();  
  // Set various `Fixed' parameters 
  void SetPh2Mip(Int_t r=300)          { fPh2Mip = r; }
  void SetmV2Mip(Int_t r=50)          { fmV2Mip = r; }
  void SetChannelWidth(Int_t s=25)   { fChannelWidth = s;}
  void SetmV2channel(Int_t size=320) { fmV2Channel = size; }
  void SetQTmin(Int_t qt=13) {fQTmin = qt;}
  void SetQTmax(Int_t qt=125) {fQTmax = qt;}
  void SetGain(Int_t size=1) { fFixedGain = size; }
  void SetZposition( Float_t valueC=69.7, Float_t valueA=373) {
    fT0zPosition[0]=valueC, fT0zPosition[1]=valueA;}
  void SetPMTeff(Int_t ipmt);  

  void SetTimeDelayTVD(Float_t r=150)   { fTimeDelayTVD = r; };
  Float_t GetTimeDelayTVD()   { return fTimeDelayTVD; }

  // Set various variable parameter defaults
  void SetTimeDelayCablesCFD(Int_t ipmt,Float_t r=150)   
  { fTimeDelayCablesCFD[ipmt] = r;}
  void SetTimeDelayCablesLED(Int_t ipmt,Float_t r=150)    
  { fTimeDelayCablesLED[ipmt] = r;}
  void SetTimeDelayPMT(Int_t ipmt,Float_t r=5)    
  { fTimeDelayPMT[ipmt] = r;}
  void SetTimeDelayElectronicCFD(Int_t ipmt,Float_t r=8)    
  { fTimeDelayElectronicCFD[ipmt] = r;}
  void SetTimeDelayElectronicLED(Int_t ipmt,Float_t r=10)  
  { fTimeDelayElectronicLED[ipmt] = r;}
  void SetVariableDelayLine(Int_t ipmt, Int_t v=0)  
  { fVariableDelayLine[ipmt] = v;}
  void SetSlewingLED(Int_t ipmt); 
  void SetSlewingRec(Int_t ipmt); 
 

  // Get `Fixed' various parameters
  Int_t GetPh2Mip()          const { return fPh2Mip; }
  Int_t GetmV2Mip()          const { return fmV2Mip; }
  Int_t GetChannelWidth()     const { return fChannelWidth; }
  Int_t GetmV2channel()     const { return fmV2Channel; }
  Int_t GetQTmin() const {return fQTmin;}
  Int_t GetQTmax() const {return fQTmax;}
  Float_t  GetGain(Int_t ipmt)        const;
  Float_t GetZposition(Int_t i) const {return fT0zPosition[i];}
  TGraph *  GetPMTeff(Int_t ipmt) const  
  {return (TGraph*)fPMTeff.At(ipmt);}
  Float_t GetpmtEFF(Int_t ipmt, Float_t lambda) const
  {return((TGraph*)fPMTeff.At(ipmt))->Eval(lambda);} 

  Float_t  GetTimeDelayCablesCFD(Int_t ipmt) const 
  {return fTimeDelayCablesCFD[ipmt]; } 
  Float_t  GetTimeDelayCablesLED(Int_t ipmt) const 
  {return fTimeDelayCablesLED[ipmt]; } ; 

  Float_t  GetTimeDelayElectronicLED(Int_t ipmt) const 
  {return fTimeDelayElectronicLED[ipmt]; } ; 
  Float_t  GetTimeDelayElectronicCFD(Int_t ipmt) const 
  {return fTimeDelayElectronicCFD[ipmt]; } ; 
  Int_t GetVariableDelayLine(Int_t ipmt) const 
  {return fVariableDelayLine[ipmt];}

  Float_t GetSlewingLED(Int_t ipmt, Float_t mv) const;
  //  {return((TGraph*)fSlewingLED.At(ipmt))->Eval(mv);} 
  TGraph *  GetSlew(Int_t ipmt) const ; 
  //  {return (TGraph*)fSlewingLED.At(ipmt);}
  TGraph *  GetSlewRec(Int_t ipmt) const;  
  //  {return (TGraph*)fSlewingRec.At(ipmt);}
  Float_t GetSlewingRec(Int_t ipmt, Float_t mv) const;
  //  {return((TGraph*)fSlewingRec.At(ipmt))->Eval(mv);} 

  Float_t GetTimeDelayCFD(Int_t ipmt);
  Float_t GetTimeDelayLED(Int_t ipmt);

protected:
  AliT0Parameters();
  virtual ~AliT0Parameters() {}
  static AliT0Parameters* fgInstance; // Static singleton instance
  
  Bool_t fIsInit;                // Whether we've been initialised
  Float_t  fT0zPosition[2] ;  // z-position of the two T0s
  Int_t   fPh2Mip;            // # photoelectrons per MIP in radiator
  Int_t   fmV2Mip;            // # mV per MIP in radiator
  Int_t        fChannelWidth;          // channel width in ns   
  Int_t        fmV2Channel;     // ADC mv  2  channel # (200000ps/(25*25).
  Int_t fQTmin;                 //min  time for QTC
  Int_t fQTmax;                 //max  time fro QTC 
  Int_t         fFixedGain;       //
  Float_t fTimeDelayCablesCFD[24];       //! time delay in cables
  Float_t fTimeDelayCablesLED[24];       //! time delay in cables
  Float_t fTimeDelayElectronicCFD[24];       //! time delay in electronic
  Float_t fTimeDelayElectronicLED[24];       //! time delay in electronic
  Float_t fTimeDelayPMT[24];       //! time delay in PMT
  Int_t fVariableDelayLine[24];      //time delay in VDL for trigger equvalizing
  TObjArray fSlewingLED;  //array of slewing correction for each PMT
  TObjArray fSlewingRec;  //array of slewing correction for Reconstruction
  TObjArray fPMTeff; //array PMT registration efficiency
  
  Float_t fTimeDelayLED;  //  sum time delay for LED channel
  Float_t fTimeDelayCFD;  // sum time delay for CFD channel
  Float_t  fTimeDelayTVD;  //time delay for TVD (vertex trigger channel)
  
  static AliT0CalibData * fgCalibData; // singleton for Calibration data

  AliCDBEntry*   fCalibentry ;  // pointer to T0 calibration object

  ClassDef(AliT0Parameters,2)
private:
  AliT0Parameters(const  AliT0Parameters&);
  AliT0Parameters& operator=(const AliT0Parameters&);

};

typedef AliT0Parameters AliSTARTParameters; // for backward compatibility

#endif
//____________________________________________________________________