FT0TimeOffsetSlotContainer.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 O2_FT0TIMEOFFSETSLOTCONTAINER_H
#define O2_FT0TIMEOFFSETSLOTCONTAINER_H
 
#include <bitset>
#include <array>
 
#include "CommonDataFormat/FlatHisto2D.h"
#include "DataFormatsFT0/SpectraInfoObject.h"
#include "DetectorsCalibration/TimeSlotCalibration.h"
#include "DetectorsCalibration/TimeSlot.h"
 
#include "TList.h"
 
#include "Rtypes.h"
namespace o2::ft0
{
 
class FT0TimeOffsetSlotContainer final
{
  static constexpr int sNCHANNELS = o2::ft0::Geometry::Nchannels;
  using TimeSlot = o2::calibration::TimeSlot<FT0TimeOffsetSlotContainer>;
  using TimeSlotCalibration = o2::calibration::TimeSlotCalibration<FT0TimeOffsetSlotContainer>;
 
 public:
  FT0TimeOffsetSlotContainer(std::size_t minEntries); // constructor is needed due to current version of FITCalibration library, should be removed
  FT0TimeOffsetSlotContainer(FT0TimeOffsetSlotContainer const&) = default;
  FT0TimeOffsetSlotContainer(FT0TimeOffsetSlotContainer&&) = default;
  FT0TimeOffsetSlotContainer& operator=(FT0TimeOffsetSlotContainer&) = default;
  FT0TimeOffsetSlotContainer& operator=(FT0TimeOffsetSlotContainer&&) = default;
  bool hasEnoughEntries() const;
  void fill(const gsl::span<const float>& data);
  SpectraInfoObject getSpectraInfoObject(std::size_t channelID, TList* listHists) const;
  void merge(FT0TimeOffsetSlotContainer* prev);
  void print() const;
  TimeSpectraInfoObject generateCalibrationObject(long tsStartMS, long tsEndMS, const std::string& pathToHists) const;
  typedef float FlatHistoValue_t;
  typedef o2::dataformats::FlatHisto2D<FlatHistoValue_t> FlatHisto2D_t;
  auto getHistogram() const { return mHistogram; }
  auto isFirstTF() const { return mIsFirstTF; }
 
 private:
  // Slot number
  uint8_t mCurrentSlot = 0;
  // Status of channels, pending channels = !(good | bad)
  std::bitset<sNCHANNELS> mBitsetBadChIDs;
  std::bitset<sNCHANNELS> mBitsetGoodChIDs;
  // For hist init, for making hist ranges dynamic
  bool mIsFirstTF{true};
  // For slot finalizing
  bool mIsReady{false};
  // Once it is upper than max entry threshold it stops increasing
  std::array<std::size_t, sNCHANNELS> mArrEntries{};
  // Total number of events
  uint64_t mTotalNevents{0};
  // Contains all information about time spectra
  FlatHisto2D_t mHistogram;
  ClassDefNV(FT0TimeOffsetSlotContainer, 1);
};
} // namespace o2::ft0
 
#endif // O2_FT0TIMEOFFSETSLOTCONTAINER_H