PndCRCCalculator.h

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#ifndef MVD_MVDOFFLINETBANALYSIS_PNDCRCCALCULATOR_H_
#define MVD_MVDOFFLINETBANALYSIS_PNDCRCCALCULATOR_H_

#include "Rtypes.h"
#include "TObject.h"

class PndCRCCalculator : public TObject {
public:
        PndCRCCalculator();
        PndCRCCalculator(UInt_t order, ULong64_t polynom, ULong64_t CRCXor, UInt_t refIn, UInt_t refOut, UInt_t CRCInit_direct);
        //settings for ToPix: fOrder(16), fPolynom(0x8005), fCRCXor(0x0000), fRefIn(0), fRefOut(0), fCRCInit_direct(0)
        //settings for PASTA: fOrder(16), fPolynom(0x1021), fCRCXor(0x0000), fRefIn(0), fRefOut(0), fCRCInit_direct(0x04FA)
        virtual ~PndCRCCalculator();

        ULong64_t CalculateCRCTableFast(std::vector<char> p, ULong64_t len);
        ULong64_t ReflectBitsStream(ULong64_t crc, int bitnum);
//      std::vector<char> ConvertData(std::vector<ULong64_t> topixFrame);
        void PrintCRCTable();


protected:
        void GenerateCRCTable();

private:
        // CRC parameters :

        const UInt_t fOrder;
        const ULong64_t fPolynom;
        const ULong64_t fCRCXor;
        const UInt_t fRefIn;
        const UInt_t fRefOut;

        ULong64_t fCRCMask;
        ULong64_t fCRCHighBit;
        ULong64_t fCRCInit_direct;
        ULong64_t fCRCTab[256];

        ClassDef(PndCRCCalculator,1);
};

#endif /* MVD_MVDOFFLINETBANALYSIS_TOPIX4_PNDHAMMINGDECODER_H_ */