SiStripFedKey.h

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// Last commit: $Id: SiStripFedKey.h,v 1.14 2008/02/22 09:53:14 bainbrid Exp $

#ifndef DataFormats_SiStripCommon_SiStripFedKey_H
#define DataFormats_SiStripCommon_SiStripFedKey_H

#include "DataFormats/SiStripCommon/interface/ConstantsForGranularity.h"
#include "DataFormats/SiStripCommon/interface/SiStripKey.h"

class SiStripFedKey;

std::ostream& operator<< ( std::ostream&, const SiStripFedKey& );

class SiStripFedKey : public SiStripKey {
  
 public:
  
  // ---------- Constructors ----------
  
  SiStripFedKey( const uint16_t& fed_id,
         const uint16_t& fe_unit = 0,
         const uint16_t& fe_chan = 0,
         const uint16_t& fed_apv = 0 );
  
  SiStripFedKey( const uint32_t& fed_key );
  
  SiStripFedKey( const std::string& directory_path );

  SiStripFedKey( const SiStripFedKey& );

  SiStripFedKey( const SiStripKey& );
  
  SiStripFedKey();
  
  // ---------- Public interface to member data ----------

  inline const uint16_t& fedId() const;

  inline const uint16_t& feUnit() const;

  inline const uint16_t& feChan() const;

  inline const uint16_t& fedApv() const;

  inline uint16_t fedChannel() const;

  // ---------- Numbering schemes ---------- 
  
  static uint16_t fedCh( const uint16_t& fe_unit,
             const uint16_t& fe_chan );
  
  static uint16_t feUnit( const uint16_t& fed_ch );
  
  static uint16_t feChan( const uint16_t& fed_ch );
  
  static uint32_t fedIndex( const uint16_t& fed_id,
                const uint16_t& fed_ch );
  
  // ---------- Utility methods ---------- 

  bool isEqual( const SiStripKey& ) const;
  
  bool isConsistent( const SiStripKey& ) const;

  bool isValid() const;
  
  bool isValid( const sistrip::Granularity& ) const;
  
  bool isInvalid() const;

  bool isInvalid( const sistrip::Granularity& ) const;

  // ---------- Print methods ----------
  
  virtual void print( std::stringstream& ss ) const;
  
  virtual void terse( std::stringstream& ss ) const;
  
 private:
  
  // ---------- Private methods ----------

  void initFromValue();
  void initFromKey();
  void initFromPath();
  void initGranularity();
  
  // ---------- Private member data ----------

  uint16_t fedId_;  

  uint16_t feUnit_; 

  uint16_t feChan_; 

  uint16_t fedApv_; 
  
  // Definition of bit field positions for 32-bit key 
  static const uint16_t fedCrateOffset_ = 24;
  static const uint16_t fedSlotOffset_  = 19;
  static const uint16_t fedIdOffset_    = 10;
  static const uint16_t feUnitOffset_   =  6;
  static const uint16_t feChanOffset_   =  2;
  static const uint16_t fedApvOffset_   =  0;

  // Definition of bit field masks for 32-bit key 
  static const uint16_t fedCrateMask_ = 0x03F; // (6 bits)
  static const uint16_t fedSlotMask_  = 0x01F; // (5 bits)
  static const uint16_t fedIdMask_    = 0x1FF; // (9 bits)
  static const uint16_t feUnitMask_   = 0x00F; // (4 bits)
  static const uint16_t feChanMask_   = 0x00F; // (4 bits)
  static const uint16_t fedApvMask_   = 0x003; // (2 bits)
  
};

// ---------- Inline methods ----------

const uint16_t& SiStripFedKey::fedId() const { return fedId_; }
const uint16_t& SiStripFedKey::feUnit() const { return feUnit_; }
const uint16_t& SiStripFedKey::feChan() const { return feChan_; }
const uint16_t& SiStripFedKey::fedApv() const { return fedApv_; }
uint16_t SiStripFedKey::fedChannel() const { return fedCh( feUnit_, feChan_ ); }

#endif // DataFormats_SiStripCommon_SiStripFedKey_H