/data/refman/pasoursint/CMSSW_5_2_9/src/EventFilter/DTRawToDigi/interface/DTROChainCoding.h

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#ifndef DTRawToDigi_DTROChainCoding_h
#define DTRawToDigi_DTROChainCoding_h

#include <EventFilter/DTRawToDigi/interface/DTDDUWords.h>

#include <vector>

#include <boost/cstdint.hpp>


/*
  A major problem is the numbering of the
  RO componenets: do they all start from 0?
  I think yes but mapping and coding (THIS class)
  must be arranged accordingly.

  So far TDC channels and ID are bound to start from 0
  whereas ROB, ROS and DDU are free to start from 0 
  or from 1. This has to be coded into the map

*/


class DTROChainCoding {

public:
  

  DTROChainCoding(): code(0) {}

  DTROChainCoding(const int &  ddu, const int &  ros, 
                  const int &  rob, const int &  tdc, const int &  channel) {    
    code = 
      ddu << DDU_SHIFT | 
      ros << ROS_SHIFT |
      rob << ROB_SHIFT |
      tdc << TDC_SHIFT |
      channel << CHANNEL_SHIFT;
  }

  DTROChainCoding(uint32_t code_): code(code_) {}
  
  virtual ~DTROChainCoding() {}

  inline void setCode(const uint32_t & code_) {code = code_;}
  inline void setChain(const int &  ddu, const int &  ros, 
                       const int &  rob, const int &  tdc, const int &  channel) {
    
    code = 
      ddu << DDU_SHIFT | 
      ros << ROS_SHIFT |
      rob << ROB_SHIFT |
      tdc << TDC_SHIFT |
      channel << CHANNEL_SHIFT;
  }

  inline void setDDU(const int & ID) { 
    code = ( code & (~(DDU_MASK << DDU_SHIFT)) ) | (ID << DDU_SHIFT);
  } 
  inline void setROS(const int & ID) { 
    code = ( code & (~(ROS_MASK << ROS_SHIFT)) ) | (ID << ROS_SHIFT);
  } 
  inline void setROB(const int & ID) { 
    code = ( code & (~(ROB_MASK << ROB_SHIFT)) ) | (ID << ROB_SHIFT);
  } 
  inline void setTDC(const int & ID) { 
    code = ( code & (~(TDC_MASK << TDC_SHIFT)) ) | (ID << TDC_SHIFT);
  } 
  inline void setChannel(const int & ID) { 
    code = ( code & (~(CHANNEL_MASK << CHANNEL_SHIFT)) ) | (ID << CHANNEL_SHIFT);
  } 
  
  inline uint32_t getCode() const { return code; }
  inline int getDDU() const { return (code >> DDU_SHIFT) & DDU_MASK; }
  inline int getDDUID() const { return (code >> DDU_SHIFT) ; }
  inline int getROS() const { return (code >> ROS_SHIFT) & ROS_MASK; }
  inline int getROSID() const { return (code >> ROS_SHIFT) ; }
  inline int getROB() const { return (code >> ROB_SHIFT) & ROB_MASK; }
  inline int getROBID() const { return (code >> ROB_SHIFT) ; }
  inline int getTDC() const { return (code >> TDC_SHIFT) & TDC_MASK; }
  inline int getTDCID() const { return (code >> TDC_SHIFT) ; }
  inline int getChannel() const { return (code >> CHANNEL_SHIFT) & CHANNEL_MASK; }
  inline int getChannelID() const { return (code >> CHANNEL_SHIFT) ; }

  inline int getSC() const { return (code >> ROS_SHIFT) & ROS_MASK; }
  inline int getSCID() const { return (code >> ROS_SHIFT) ; }


private:

  uint32_t code;

  // First shift the bits then apply the mask

  // ddu bit are the last ones. I DONT CARE if the ID is > than 730 (I always get the lsb)
  static const int  DDU_SHIFT = 16;
  static const int  DDU_MASK = 0x3FF;

  static const int  ROS_SHIFT = 12;
  static const int  ROS_MASK = 0xF;

  static const int  ROB_SHIFT = 7;
  static const int  ROB_MASK = 0x1F;

  static const int  TDC_SHIFT = 5;
  static const int  TDC_MASK = 0x3;

  static const int  CHANNEL_SHIFT = 0;
  static const int  CHANNEL_MASK = 0x1F;


};

#endif