CSCSP_MBblock.h

Go to the documentation of this file.

#ifndef CSCSP_MBblock_h
#define CSCSP_MBblock_h

#include <cstring>

class CSCSP_MBblock {
private:
    unsigned quality_  : 3; // muon quality (0-7),  quality > 0 for valid data;
    unsigned zero_1    : 1; // format specific
    unsigned phi_bend_ : 5; // phi bend angle
    unsigned zero_2    : 3; // format specific
    unsigned flag_     : 1; // if 1 then it is a second muon from previous bunch crossing
    unsigned cal_      : 1; // MBy special mode flag
    unsigned zero_3    : 2; // format specific
    unsigned phi_      : 12;// azimuth coordinate;
    unsigned bxn1_     : 1; // next to the least significant bit of the MB BX number
    unsigned bxn0_     : 1; // least significant bit of the MB BX number
    unsigned bc0_      : 1; // BX zero timing mark
    unsigned zero_4    : 1; // format specific
    unsigned mb_bxn_   : 12;// Stub arrival time picked from a local 12-bit Bunch Counter, that runs at data stream timing
    unsigned spare_1   : 3; // not used
    unsigned zero_5    : 1; // format specific
    unsigned spare_2   : 15;// not used
    unsigned zero_6    : 1; // format specific

    // Other data members logically belong to MB block record,
    //  but physically are located in Data Block Header, which implementation is:
    friend class CSCSPRecord;
    friend class CSCTFPacker;
    // Let this class set following data memebers:
    unsigned int tbin_;           // time bin, that this MB block belongs to in global SP record
    unsigned int valid_quality;   // valid quality
    unsigned int alignment_fifo;  // AF error
    unsigned int bxBit;           // monitors the MB(DT) timing
    unsigned int id_;             // stub id (1-MB1a, 2-MB1d)

public:
    bool check(void) const throw() { return zero_1!=0||zero_2!=0||zero_3!=0||zero_4!=0||zero_5!=0||zero_6!=0||spare_1!=0||spare_2!=0; }

    unsigned int quality (void) const throw() { return quality_;  }
    unsigned int phi_bend(void) const throw() { return phi_bend_; }
    unsigned int flag    (void) const throw() { return flag_;     }
    unsigned int cal     (void) const throw() { return cal_;      }

    unsigned int phi(void) const throw() { return phi_;    }
    unsigned int bxn(void) const throw() { return (bxn1_<<1)|bxn0_; }
    unsigned int bc0(void) const throw() { return bc0_;    }
    unsigned int BXN(void) const throw() { return mb_bxn_; }

    unsigned int id  (void) const throw() { return id_;           }
    unsigned int tbin(void) const throw() { return tbin_;         }
    unsigned int vq  (void) const throw() { return valid_quality; }
    unsigned int af  (void) const throw() { return alignment_fifo;}
    unsigned int timingError(void) const throw() { return bxBit; }

    bool unpack(const unsigned short *&buf) throw() { std::memcpy(this, buf, 4*sizeof(short)); buf+=4; return check(); }

    CSCSP_MBblock(void){}
};

#endif