#ifndef ALIRAWDATAHEADER_H
#define ALIRAWDATAHEADER_H
/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

struct AliRawDataHeader {
  AliRawDataHeader() :
    fSize(0xFFFFFFFF), 
    fEventID1(0),
    fL1TriggerType(0),
    fVersion(2),
    fEventID2(0),
    fAttributesSubDetectors(0),
    fStatusMiniEventID(0x1000),  // status bit 4: no L1/L2 trigger information
    fTriggerClassLow(0),
    fROILowTriggerClassHigh(0),
    fROIHigh(0)
  {}

  UShort_t  GetEventID1() const
    {return (fEventID1 & 0xFFF);};

  UChar_t   GetL1TriggerMessage() const
    {return (UChar_t)((fEventID1 >> 14) | ((UShort_t)fL1TriggerType << 2));};

  UChar_t   GetVersion() const
    {return fVersion;};

  UChar_t   GetAttributes() const 
    {return (fAttributesSubDetectors >> 24) & 0xFF;};
  Bool_t    TestAttribute(Int_t index) const
    {return (fAttributesSubDetectors >> (24 + index)) & 1;};
  void      SetAttribute(Int_t index)
    {fAttributesSubDetectors |= (1 << (24 + index));};
  void      ResetAttribute(Int_t index)
    {fAttributesSubDetectors &= (0xFFFFFFFF ^ (1 << (24 + index)));};
  UInt_t    GetSubDetectors() const
    {return fAttributesSubDetectors & 0xFFFFFF;};

  UInt_t    GetStatus() const
    {return (fStatusMiniEventID >> 12) & 0xFFFF;};
  UInt_t    GetMiniEventID() const
    {return fStatusMiniEventID & 0x7FF;};

  ULong64_t GetTriggerClasses() const
    {return ((ULong64_t) (fROILowTriggerClassHigh & 0x1FFFF)) << 32 + fTriggerClassLow;}
  ULong64_t GetROI() const
    {return ((ULong64_t) fROIHigh) << 32 + ((fROILowTriggerClassHigh >> 28) & 0xF);}

  void      SetTriggerClass(ULong64_t mask)
    {fTriggerClassLow = (mask & 0xFFFFFFFF);  // low bits of trigger class
     fROILowTriggerClassHigh = ((mask >> 32) & 0x3FFFF); // low bits of ROI data (bits 28-31) and high bits of trigger class (bits 0-17)
    };

  UInt_t    fSize;              // size of the raw data in bytes
  UShort_t  fEventID1;          // bunch crossing number
  UChar_t   fL1TriggerType;     // level 1 trigger type
  UChar_t   fVersion;           // version of the data header format
  UInt_t    fEventID2;          // orbit number
  UInt_t    fAttributesSubDetectors; // block attributes (bits 24-31) and participating sub detectors
  UInt_t    fStatusMiniEventID; // status & error bits (bits 12-27) and mini event ID (bits 0-11)
  UInt_t    fTriggerClassLow;   // low bits of trigger class
  UInt_t    fROILowTriggerClassHigh; // low bits of ROI data (bits 28-31) and high bits of trigger class (bits 0-17)
  UInt_t    fROIHigh;           // high bits of ROI data
};

#endif