CTPPSDigi/interface/CTPPSPixelDigi.h

0001 #ifndef CTPPS_CTPPSDigi_CTPPSPixelDigi_h
0002 #define CTPPS_CTPPSDigi_CTPPSPixelDigi_h
0003 /**
0004  * Persistent digi for CTPPS Pixels.
0005  * Author: F.Ferro ferro@ge.infn.it
0006  */
0007
0008 #include "FWCore/Utilities/interface/Exception.h"
0009
0010 class CTPPSPixelDigi {
0011 public:
0012   CTPPSPixelDigi(int packed_value) : theData(packed_value) {}
0013
0014   CTPPSPixelDigi(int row, int col, int adc) { init(row, col, adc); }
0015
0016   CTPPSPixelDigi(int chan, int adc) {
0017     std::pair<int, int> rc = channelToPixel(chan);
0018     init(rc.first, rc.second, adc);
0019   }
0020
0021   CTPPSPixelDigi() : theData(0) {}
0022
0023   /// Access to digi information
0024   int row() const { return (theData >> row_shift) & row_mask; }
0025   int column() const { return (theData >> column_shift) & column_mask; }
0026   unsigned short adc() const { return (theData >> adc_shift) & adc_mask; }
0027   uint32_t packedData() const { return theData; }
0028
0029   static std::pair<int, int> channelToPixel(int ch) {
0030     int row = (ch >> column_width_ch) & row_mask_ch;
0031     int col = ch & column_mask_ch;
0032     return std::pair<int, int>(row, col);
0033   }
0034
0035   static int pixelToChannel(int row, int col) { return (row << column_width_ch) | col; }
0036
0037   int channel() const { return pixelToChannel(row(), column()); }
0038
0039   /// const values for digi packing with bit structure: adc_bits+col_bits+row_bits
0040   static const uint32_t row_shift, column_shift, adc_shift;
0041   static const uint32_t row_mask, column_mask, adc_mask, rowcol_mask;
0042   static const uint32_t row_width, column_width, adc_width;
0043   static const uint32_t max_row, max_column, max_adc;
0044
0045   /// const values for channel definition with bit structure: row_bits+col_bits
0046   static const uint32_t column_width_ch;
0047   static const uint32_t column_mask_ch;
0048   static const uint32_t row_mask_ch;
0049
0050 private:
0051   void init(int row, int col, int adc);
0052   uint32_t theData;
0053 };
0054
0055 /// Comparison operator
0056
0057 inline bool operator<(const CTPPSPixelDigi& one, const CTPPSPixelDigi& other) {
0058   return (one.packedData() & CTPPSPixelDigi::rowcol_mask) < (other.packedData() & CTPPSPixelDigi::rowcol_mask);
0059 }
0060
0061 #include <iostream>
0062 inline std::ostream& operator<<(std::ostream& o, const CTPPSPixelDigi& digi) {
0063   return o << " " << digi.row() << " " << digi.column() << " " << digi.adc();
0064 }
0065
0066 #endif