SiPixelDigi/interface/PixelDigi.h

0001 #ifndef TRACKINGOBJECTS_PIXELDIGI_H
0002 #define TRACKINGOBJECTS_PIXELDIGI_H
0003
0004 // 25/06/06 - get rid of time(), change adc() from int to undigned short. d.k.
0005
0006 #include <utility>
0007 #include <algorithm>
0008 #include "DataFormats/SiPixelDetId/interface/PixelChannelIdentifier.h"
0009
0010 /**
0011  * Persistent digi for the Pixels.
0012  */
0013
0014 class PixelDigi {
0015 public:
0016   typedef unsigned int PackedDigiType;
0017   typedef unsigned int ChannelType;
0018
0019   explicit PixelDigi(PackedDigiType packed_value) : theData(packed_value) {}
0020
0021   PixelDigi(int row, int col, int adc) { init(row, col, adc); }
0022   PixelDigi(int row, int col, int adc, int flag) { init(row, col, adc, flag); }
0023
0024   PixelDigi(int chan, int adc) {
0025     std::pair<int, int> rc = channelToPixel(chan);
0026     init(rc.first, rc.second, adc);
0027   }
0028
0029   PixelDigi() : theData(0) {}
0030
0031   void init(int row, int col, int adc, int flag = 0) {
0032 #ifdef FIXME_DEBUG
0033     // This check is for the maximal row or col number that can be packed
0034     // in a PixelDigi. The actual number of rows or columns in a detector
0035     // may be smaller!
0036     // it is done much better in Raw2Digi...
0037     if (row < 0 || row > PixelChannelIdentifier::thePacking.max_row || col < 0 ||
0038         col > PixelChannelIdentifier::thePacking.max_column) {
0039       std::cout << "PixelDigi constructor: row or column out packing range " << row << ' ' << col << std::endl;
0040     }
0041 #endif
0042
0043     // Set adc to max_adc in case of overflow
0044     adc = (adc > PixelChannelIdentifier::thePacking.max_adc) ? PixelChannelIdentifier::thePacking.max_adc
0045                                                              : std::max(adc, 0);
0046
0047     theData = (row << PixelChannelIdentifier::thePacking.row_shift) |
0048               (col << PixelChannelIdentifier::thePacking.column_shift) |
0049               (adc << PixelChannelIdentifier::thePacking.adc_shift) |
0050               (flag << PixelChannelIdentifier::thePacking.flag_shift);
0051   }
0052
0053   // Access to digi information
0054   int row() const {
0055     return (theData >> PixelChannelIdentifier::thePacking.row_shift) & PixelChannelIdentifier::thePacking.row_mask;
0056   }
0057   int column() const {
0058     return (theData >> PixelChannelIdentifier::thePacking.column_shift) &
0059            PixelChannelIdentifier::thePacking.column_mask;
0060   }
0061   int flag() const {
0062     return (theData >> PixelChannelIdentifier::thePacking.flag_shift) & PixelChannelIdentifier::thePacking.flag_mask;
0063   }
0064   unsigned short adc() const {
0065     return (theData >> PixelChannelIdentifier::thePacking.adc_shift) & PixelChannelIdentifier::thePacking.adc_mask;
0066   }
0067   PackedDigiType packedData() const { return theData; }
0068
0069   static std::pair<int, int> channelToPixel(int ch) {
0070     int row = (ch >> PixelChannelIdentifier::thePacking.column_width) & PixelChannelIdentifier::thePacking.row_mask;
0071     int col = ch & PixelChannelIdentifier::thePacking.column_mask;
0072     return std::pair<int, int>(row, col);
0073   }
0074
0075   static int pixelToChannel(int row, int col) { return (row << PixelChannelIdentifier::thePacking.column_width) | col; }
0076
0077   int channel() const { return PixelChannelIdentifier::pixelToChannel(row(), column()); }
0078
0079 private:
0080   PackedDigiType theData;
0081 };
0082
0083 // Comparison operators
0084
0085 //inline bool operator<( const PixelDigi& one, const PixelDigi& other) {
0086 //  return one.channel() < other.channel();
0087 //}
0088
0089 inline bool operator<(const PixelDigi& one, const PixelDigi& other) {
0090   return (one.packedData() & PixelChannelIdentifier::thePacking.rowcol_mask) <
0091          (other.packedData() & PixelChannelIdentifier::thePacking.rowcol_mask);
0092 }
0093
0094 #include <iostream>
0095 inline std::ostream& operator<<(std::ostream& o, const PixelDigi& digi) {
0096   return o << " " << digi.channel() << " " << digi.adc();
0097 }
0098
0099 #endif