source: fact/tools/rootmacros/openFits.c@ 13501

// Opens FACT Fits Raw Data  -- for more Info refer to header file
size_t openDataFits(
        const char *datafilename,               // path to fits file containing FACT raw data
        fits * * datafile,                              // ptr to pointer, where to return the fits object
        vector<int16_t> &Data,                  // vector, which will be filled with raw data
        vector<int16_t> &StartCells,    // vector, which will be filled with DRS start positions
        unsigned int &EventID,                  // index of the current event
        UInt_t &RegionOfInterest,               // Width of the Region, read out of the DRS
        UInt_t &NumberOfPixels,                 // Total number of pixel, read out of the camera
        size_t &PXLxROI,                                // Size of column "Data" = #Pixel x ROI
                        // this can be used, to x-check RegionOfInterest and NumberOfPixels
        int VerbosityLevel                              //
) {
        size_t NumberOfEvents;
        *datafile = new fits(datafilename);
        if (!(*(*datafile))) {
                if (VerbosityLevel > 0)
                        cout << "Couldn't properly open the datafile: " << datafilename << endl;
                return 0;
        }

        NumberOfEvents = (*datafile)->GetNumRows();
        if (NumberOfEvents < 1){
                if (VerbosityLevel > 0){
                        cout << "Warning in FOpenDataFile of file: " << datafilename << endl;
                        cout << "the file contains no events." << endl;
                }
        }

        RegionOfInterest = (*datafile)->GetUInt("NROI");
        NumberOfPixels = (*datafile)->GetUInt("NPIX");

        // I am not really sure, why anybody should be interested in this number
        // It can be used for the sanity check, which follows only ... I guess.
        PXLxROI = (*datafile)->GetN("Data");

        if ( RegionOfInterest * NumberOfPixels != PXLxROI) // something in the file went wrong
        {
                if (VerbosityLevel > 0){
                        cout << "Warning in FOpenDataFile of file: " << datafilename << endl;
                        cout << "RegionOfInterest * NumberOfPixels != PXLxROI" << endl;
                        cout << "--> " << RegionOfInterest;
                        cout << " * " << NumberOfPixels;
                        cout << " = " << RegionOfInterest * NumberOfPixels;
                        cout << ", but PXLxROI =" << PXLxROI << endl;
                }
                return 0;
        }

        //Set the sizes of the data vectors
        Data.resize(PXLxROI, 0);
        StartCells.resize(NumberOfPixels, 0);

        //Link the data to variables
        (*datafile)->SetRefAddress("EventNum", EventID);
        (*datafile)->SetVecAddress("Data", Data);
        (*datafile)->SetVecAddress("StartCellData", StartCells);

        return NumberOfEvents;
}

size_t openCalibFits(
        const char *FileName,                   // path to fits file
        vector<float> &Offset,
        vector<float> &Gain,
        vector<float> &TriggerOffset,
        size_t &TriggerOffsetROI,
        int VerbosityLevel      
)
{
        size_t NumberOfEvents = 0;

        // sizes of the data vectors
        size_t Offset_size;
        size_t Gain_size;
        size_t TriggerOffset_size;

        fits * datafile = new fits( FileName );
        if (!(*datafile)) {
                if (VerbosityLevel > 0)
                        cout << "Couldn't properly open the file: " << FileName << endl;
                return 0;
        }

        NumberOfEvents = datafile->GetNumRows();
        if (NumberOfEvents < 1){
                if (VerbosityLevel > 0){
                        cout << "Warning during open of file: " << FileName << endl;
                        cout << "the file contains no events." << endl;
                        return 0;
                }
        }

        // only if the user really wants, this stuff is output
        if (VerbosityLevel > 1){
         cout << "----------------- DRS Calib Header -----------------" << endl;
         datafile->PrintKeys();
         cout << "---------------- DRS Calib Columns -----------------" << endl;
         datafile->PrintColumns();
        }

        Offset_size = datafile->GetN("BaselineMean");
        Gain_size = datafile->GetN("GainMean");
        TriggerOffset_size = datafile->GetN("TriggerOffsetMean");

  Offset.resize(Offset_size, 0);
  Gain.resize(Gain_size, 0);
  TriggerOffset.resize(TriggerOffset_size, 0);

        TriggerOffsetROI = (size_t)datafile->GetUInt("NROI");
  datafile->SetVecAddress("BaselineMean", Offset);
  datafile->SetVecAddress("GainMean", Gain);
  datafile->SetVecAddress("TriggerOffsetMean", TriggerOffset);
  datafile->GetRow(0); //Read the calibration data

  return NumberOfEvents;
}