Upsample.h

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// Upsample.h: DPPP step class to upsample visibilities
// Copyright (C) 2020 ASTRON (Netherlands Institute for Radio Astronomy)
// SPDX-License-Identifier: GPL-3.0-or-later
 
 
#ifndef DPPP_DummyStep_H
#define DPPP_DummyStep_H
 
#include "InputStep.h"
 
#include "base/DPBuffer.h"
 
#include <utility>
 
namespace dp3 {
namespace base {
class UVWCalculator;
}
namespace common {
class ParameterSet;
}
 
namespace steps {
 
class Upsample : public Step {
 public:
  Upsample(const common::ParameterSet&, const std::string& prefix);
 
  Upsample(const std::string& name, unsigned int time_step, bool update_uvw);
 
  ~Upsample() override;
 
  common::Fields getRequiredFields() const override {
    common::Fields fields = kFlagsField;
    if (update_uvw_) fields |= kUvwField;
    return fields;
  }
 
  common::Fields getProvidedFields() const override {
    return update_uvw_ ? kUvwField : common::Fields();
  }
 
  bool process(std::unique_ptr<base::DPBuffer> buffer) override;
 
  void finish() override;
 
  void updateInfo(const base::DPInfo&) override;
 
  void show(std::ostream&) const override;
 
 private:
  void UpdateTimeCentroidExposureAndUvw(std::unique_ptr<base::DPBuffer>& buffer,
                                        double time, double exposure);
 
  const std::string name_;
  const unsigned int time_step_;
  const bool update_uvw_;
 
  std::vector<std::unique_ptr<base::DPBuffer>> prev_buffers_;
  std::vector<std::unique_ptr<base::DPBuffer>> buffers_;
  unsigned int first_to_flush_;
  std::unique_ptr<base::UVWCalculator> uvw_calculator_;
 
  common::NSTimer timer_;
};
 
}  // namespace steps
}  // namespace dp3
 
#endif