DigitalCurrentClusterIntegrator.h

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// Copyright 2019-2020 CERN and copyright holders of ALICE O2.
// See https://alice-o2.web.cern.ch/copyright for details of the copyright holders.
// All rights not expressly granted are reserved.
//
// This software is distributed under the terms of the GNU General Public
// License v3 (GPL Version 3), copied verbatim in the file "COPYING".
//
// In applying this license CERN does not waive the privileges and immunities
// granted to it by virtue of its status as an Intergovernmental Organization
// or submit itself to any jurisdiction.
 
#ifndef ALICEO2_TPC_DIGITALCURRENTCLUSTERINTEGRATOR_H_
#define ALICEO2_TPC_DIGITALCURRENTCLUSTERINTEGRATOR_H_
 
#include <vector>
#include <memory>
 
#include "DataFormatsTPC/ClusterNative.h"
#include "DataFormatsTPC/Constants.h"
#include "TPCBase/Mapper.h"
 
namespace o2
{
namespace tpc
{
 
//This class contains an array or all TPC pads (in selected sectors and rows), and can integrated the charges of clusters
class DigitalCurrentClusterIntegrator
{
 public:
  DigitalCurrentClusterIntegrator() = default;
  ~DigitalCurrentClusterIntegrator() = default;
 
  void initRow(int sector, int row)
  {
    if (mIntegratedCurrents[sector][row] == nullptr) {
      int nPads = o2::tpc::Mapper::instance().getNumberOfPadsInRowSector(row);
      mIntegratedCurrents[sector][row].reset(new unsigned long long int[nPads]);
      memset(&mIntegratedCurrents[sector][row][0], 0, nPads * sizeof(mIntegratedCurrents[sector][row][0]));
    }
  }
  void integrateCluster(int sector, int row, float pad, unsigned int charge)
  {
    int ipad = pad + 0.5;
    if (ipad < 0) {
      ipad = 0;
    }
    int maxPad = o2::tpc::Mapper::instance().getNumberOfPadsInRowSector(row);
    if (ipad >= maxPad) {
      ipad = maxPad - 1;
    }
    mIntegratedCurrents[sector][row][ipad] += charge;
  }
  void clear(); //Clear all currents to 0
  void reset(); //Free all allocated current buffers
 
 private:
  std::unique_ptr<unsigned long long int[]> mIntegratedCurrents[constants::MAXSECTOR][constants::MAXGLOBALPADROW];
};
 
} // namespace tpc
} // namespace o2
#endif