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BeamFormerPreprocessingStep.cc

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    BeamFormerPreprocessingStep.cc 4.95 KiB
    //# BeamFormerPreprocessingStep.cc
    //# Copyright (C) 2012-2013  ASTRON (Netherlands Institute for Radio Astronomy)
    //# P.O. Box 2, 7990 AA Dwingeloo, The Netherlands
    //#
    //# This file is part of the LOFAR software suite.
    //# The LOFAR software suite is free software: you can redistribute it and/or
    //# modify it under the terms of the GNU General Public License as published
    //# by the Free Software Foundation, either version 3 of the License, or
    //# (at your option) any later version.
    //#
    //# The LOFAR software suite is distributed in the hope that it will be useful,
    //# but WITHOUT ANY WARRANTY; without even the implied warranty of
    //# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    //# GNU General Public License for more details.
    //#
    //# You should have received a copy of the GNU General Public License along
    //# with the LOFAR software suite. If not, see <http://www.gnu.org/licenses/>.
    //#
    //# $Id$
    
    #include <lofar_config.h>
    
    #include "BeamFormerPreprocessingStep.h"
    
    #include <GPUProc/global_defines.h>
    #include <GPUProc/gpu_wrapper.h>
    #include <GPUProc/Flagger.h>
    
    #include <CoInterface/Parset.h>
    #include <ApplCommon/PosixTime.h>
    #include <Common/LofarLogger.h>
    
    #include <iomanip>
    
    namespace LOFAR
    {
      namespace Cobalt
      {
        BeamFormerPreprocessingStep::Factories::Factories(const Parset &ps) :
            intToFloat(IntToFloatKernel::Parameters(
              ps, 
              ps.settings.beamFormer.nrDelayCompensationChannels > 1,
              true)),
    
            firstFFT(FFT_Kernel::Parameters(
              ps.settings.beamFormer.nrDelayCompensationChannels,
              ps.settings.beamFormer.antennaFieldNames.size() * NR_POLARIZATIONS * ps.settings.blockSize,
              true,
              "FFT (beamformer, 1st)")),
            fftShift(FFTShiftKernel::Parameters(ps,
              ps.settings.beamFormer.antennaFieldNames.size(),
              ps.settings.beamFormer.nrDelayCompensationChannels,
              "FFT-shift (beamformer)")),
    
            zeroing(ZeroingKernel::Parameters(ps,
              ps.settings.beamFormer.antennaFieldNames.size(),
              ps.settings.beamFormer.nrDelayCompensationChannels,
              "Zeroing (beamformer)")),
    
            delayCompensation(DelayAndBandPassKernel::Parameters(ps, false)),
    
            bandPassCorrection(BandPassCorrectionKernel::Parameters(ps))
        {
        }
    
        BeamFormerPreprocessingStep::BeamFormerPreprocessingStep(
          const Parset &parset,
          gpu::Stream &i_queue,
          gpu::Context &context,
          Factories &factories,