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#ifndef MSIO_REORDERING_BASELINE_READER_H_
#define MSIO_REORDERING_BASELINE_READER_H_
#include <fstream>
#include <map>
#include <memory>
#include <vector>
#include <stdexcept>
#include "baselinereader.h"
#include "directbaselinereader.h"
class ReorderingBaselineReader : public BaselineReader {
public:
explicit ReorderingBaselineReader(const std::string& msFile);
~ReorderingBaselineReader();
bool IsModified() const override {
return reordered_data_files_have_changed_ ||
reordered_flag_files_have_changed_;
}
void WriteToMs() override;
void PrepareReadWrite(ProgressListener& progress) override;
virtual void PerformReadRequests(
class ProgressListener& progress) final override;
virtual void PerformFlagWriteRequests() final override;
virtual void PerformDataWriteTask(std::vector<Image2DCPtr> _realImages,
std::vector<Image2DCPtr> _imaginaryImages,
size_t antenna1, size_t antenna2,
size_t spectralWindow,
size_t sequenceId) final override;
virtual size_t GetMinRecommendedBufferSize(
size_t /*threadCount*/) final override {
return 1;
}
virtual size_t GetMaxRecommendedBufferSize(
size_t /*threadCount*/) final override {
return 2;
}
void SetReadUVW(bool readUVW) { read_uvw_ = readUVW; }
private:
struct ReorderInfo {
std::unique_ptr<std::ofstream> dataFile;
std::unique_ptr<std::ofstream> flagFile;
};
struct UpdateInfo {
std::unique_ptr<std::ifstream> dataFile;
std::unique_ptr<std::ifstream> flagFile;
};
class SeqIndexLookupTable {
public:
SeqIndexLookupTable(size_t antennaCount, size_t spectralWindowCount,
size_t sequenceCount)
: _antennaCount(antennaCount), _table(sequenceCount) {
size_t maxBaselineCount = antennaCount * antennaCount;
for (size_t i = 0; i != sequenceCount; ++i) {
std::vector<std::vector<size_t>>& spwTable = _table[i];
spwTable.resize(spectralWindowCount);
for (size_t j = 0; j != spectralWindowCount; ++j) {
std::vector<size_t>& baselTable = spwTable[j];
baselTable.resize(maxBaselineCount);
}
}
}
size_t& Value(size_t antenna1, size_t antenna2, size_t spectralWindow,
size_t sequenceId) {
return _table[sequenceId][spectralWindow]
[antenna1 * _antennaCount + antenna2];
}
private:
size_t _antennaCount;
std::vector<std::vector<std::vector<size_t>>> _table;
};
void reorderMS(class ProgressListener& progress);
void reorderFull(class ProgressListener& progress);
void makeLookupTables(size_t& fileSize);
void updateOriginalMSData(class ProgressListener& progress);
void updateOriginalMSFlags(class ProgressListener& progress);
void performFlagWriteTask(std::vector<Mask2DCPtr> flags, unsigned antenna1,
unsigned antenna2, unsigned spw,
unsigned sequenceId);
template <bool UpdateData, bool UpdateFlags>
void updateOriginalMS(class ProgressListener& progress);
void removeTemporaryFiles();
static void preAllocate(const std::string& filename, size_t fileSize);
DirectBaselineReader direct_reader_;
std::unique_ptr<SeqIndexLookupTable> sequence_index_table_;
std::vector<size_t> file_positions_;
std::string data_filename_;
std::string flag_filename_;
std::string meta_filename_;
bool ms_is_reordered_;
bool remove_reordered_files_;
bool reordered_data_files_have_changed_;
bool reordered_flag_files_have_changed_;
bool read_uvw_;
};
#endif // MSIO_REORDERING_BASELINE_READER_H_
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