//-----------------------------------------------------------------------------
//Oct 18, 2003 RLC: HATD data block
//-----------------------------------------------------------------------------
#ifndef THatDataBlock_hh
#define THatDataBlock_hh


#include "Stntuple/data/THatTdcHeader.hh"
#include "Stntuple/data/THatTdcWord.hh"

#include <Stntuple/base/TStnArrayI.hh>
#include <Stntuple/data/TTdcModule.hh>

#include <Stntuple/obj/TStnDataBlock.hh>

class THatDataBlock : public TStnDataBlock {

  friend Int_t StntupleInitHatDataBlock(TStnDataBlock* block, 
					AbsEvent*      event, 
					int            mode);
public:
  enum { kHatTdcs = 16 };
//-----------------------------------------------------------------------------
//  data members: 
//-----------------------------------------------------------------------------
protected:
  Int_t          fNHatdHits;		// total number of HATD hit data words 
  TTdcModule     fHatTdc[kHatTdcs];	// HATD TDC's (transient)
  TStnArrayI     fHatd;			// HATD buffer
//-----------------------------------------------------------------------------
//  functions
//-----------------------------------------------------------------------------
public:
  THatDataBlock();
  virtual ~THatDataBlock();
					// ****** init methods
  Int_t           InitTdcChannels();
					// ****** accessors

  TTdcModule&     HatTdc(Int_t i)       { return fHatTdc[i]; }
  Int_t           NHatdHits    () const { return fNHatdHits; }

  TStnArrayI&     GetHatd      () { return fHatd; }

  Int_t           ReadCalibrations(int run_number);

  // i is the TDC number
  THatTdcHeader&  GetHatTdcHeader(Int_t i);

  // i is the TDC number. j=hit number
  THatTdcWord&    GetHatTdcWord(Int_t i, Int_t j);

  // get eta and phi indices from header and data word
  // this returns 0->23, or 0-47 in the plug region where there are 48 towers
  static Int_t    GetEtaPhi(THatTdcHeader& h, THatTdcWord& w, 
			    Int_t& phi, Int_t& eta);

  // get data for eta and phi indicies
  // user must check return value to see if the hit was present
  // this returns 0->23 in phi even in the plug region with 48 towers
  // since those towers are ganged by 2
  Int_t    GetDataEtaPhi(THatTdcHeader& h, THatTdcWord& w, 
				Int_t phi, Int_t eta);

					// ****** overloaded functions of 
					// TObject

  void          Clear(Option_t* opt="");
  void          Print(Option_t* opt="") const;

  ClassDef(THatDataBlock,1)	// HATD data
};

#endif