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#ifndef MSPROVIDERS_MSREADERS_REORDEREDMSREADER_H_
#define MSPROVIDERS_MSREADERS_REORDEREDMSREADER_H_
#include "msreader.h"
#include <aocommon/uvector.h>
#include <cstdint>
#include <fstream>
namespace wsclean {
class ReorderedMsProvider;
class ReorderedMsReader final : public MSReader {
public:
ReorderedMsReader(ReorderedMsProvider* reordered_ms);
virtual ~ReorderedMsReader(){};
size_t RowId() const override { return current_input_row_; }
bool CurrentRowAvailable() override;
void NextInputRow() override;
void ReadMeta(MSProvider::MetaData& metadata) override;
void ReadData(std::complex<float>* buffer) override;
void ReadModel(std::complex<float>* buffer) override;
void ReadWeights(float* buffer) override;
void WriteImagingWeights(const float* buffer) override;
size_t CurrentDataDescId() const { return metadata_.data_desc_id; }
private:
uint64_t NVisibilitiesPerRow(size_t data_desc_id) const;
void CacheMeta();
size_t current_input_row_ = 0;
size_t current_value_position_ = 0;
MSProvider::MetaData metadata_;
// Chunkoffset counts the amount of data rows we are ahead or behind.
// Positive values mean we are lagging, whereas negative values mean we are
// ahead of the current time step.
bool has_data_ = false;
bool has_weights_ = false;
std::ifstream meta_file_;
std::ifstream weight_file_;
std::ifstream data_file_;
aocommon::UVector<float> imaging_weight_buffer_;
aocommon::UVector<std::complex<float>> data_buffer_;
aocommon::UVector<float> weight_buffer_;
std::unique_ptr<std::fstream> imaging_weights_file_;
};
} // namespace wsclean
#endif
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