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#include "contiguousms.h"
#include "msreaders/contiguousmsreader.h"
#include <aocommon/logger.h>
#include <schaapcommon/reordering/reordering.h>
#include <casacore/measures/Measures/MEpoch.h>
#include <casacore/measures/TableMeasures/ScalarMeasColumn.h>
#include <casacore/tables/Tables/TableLocker.h>
#include <memory>
using schaapcommon::reordering::MSSelection;
using schaapcommon::reordering::StorageManagerType;
namespace wsclean {
ContiguousMS::ContiguousMS(const string& msPath,
const std::string& dataColumnName,
const std::string& modelColumnName,
StorageManagerType modelStorageManager,
const MSSelection& selection,
aocommon::PolarizationEnum outputPolarization,
size_t dataDescId, bool useMPI)
: _currentOutputRow(0),
_currentOutputTimestep(0),
_currentOutputTime(0.0),
_dataDescId(dataDescId),
_useMPI(useMPI),
_nAntenna(0),
_isModelColumnPrepared(false),
_selection(selection),
_outputPolarization(outputPolarization),
_msPath(msPath),
_dataColumnName(dataColumnName),
_modelColumnName(modelColumnName),
_modelStorageManager(modelStorageManager) {
open();
}
void ContiguousMS::open() {
aocommon::Logger::Info << "Opening " << _msPath << ", spw " << _dataDescId
<< " with contiguous MS reader.\n";
_ms = SynchronizedMS(_msPath, _useMPI ? casacore::TableLock::UserNoReadLocking
: casacore::TableLock::DefaultLocking);
_antenna1Column = casacore::ScalarColumn<int>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::ANTENNA1));
_antenna2Column = casacore::ScalarColumn<int>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::ANTENNA2));
_fieldIdColumn = casacore::ScalarColumn<int>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::FIELD_ID));
_dataDescIdColumn = casacore::ScalarColumn<int>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::DATA_DESC_ID));
_timeColumn = casacore::ScalarColumn<double>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::TIME));
_uvwColumn = casacore::ArrayColumn<double>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::UVW));
_dataColumn = casacore::ArrayColumn<casacore::Complex>(*_ms, _dataColumnName);
_flagColumn = casacore::ArrayColumn<bool>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::FLAG));
_inputPolarizations = GetMSPolarizations(_dataDescId, *_ms);
const casacore::IPosition shape(_dataColumn.shape(0));
_dataArray = casacore::Array<std::complex<float>>(shape);
_weightSpectrumArray = casacore::Array<float>(shape);
_imagingWeightSpectrumArray = casacore::Array<float>(shape);
_flagArray = casacore::Array<bool>(shape);
_bandData = aocommon::MultiBandData(*_ms);
if (_bandData.BandCount() > 1) {
throw std::runtime_error(
"This set contains multiple spws, and can therefore not be opened "
"directly due to possible synchronization issues between spws. You can "
"force reordering of the measurement by adding -reorder to the command "
"line.");
}
_nAntenna = _ms->antenna().nrow();
_msHasWeightSpectrum = OpenWeightSpectrumColumn(*_ms, _weightSpectrumColumn);
if (!_msHasWeightSpectrum) {
casacore::IPosition scalarShape(1, shape[0]);
_weightScalarArray = casacore::Array<float>(scalarShape);
_weightScalarColumn.reset(new casacore::ArrayColumn<float>(
*_ms, casacore::MS::columnName(casacore::MSMainEnums::WEIGHT)));
}
GetRowRangeAndIDMap(*_ms, _selection, _startRow, _endRow,
std::set<size_t>{size_t(_dataDescId)}, _idToMSRow);
ResetWritePosition();
}
std::unique_ptr<MSReader> ContiguousMS::MakeReader() {
std::unique_ptr<MSReader> reader(new ContiguousMSReader(this));
return reader;
}
void ContiguousMS::ResetWritePosition() {
_currentOutputRow = _startRow - 1;
_currentOutputTime = 0.0;
// TODO: something similar needed in the ContiguousMSReader class?
if (_selection.HasInterval())
_currentOutputTimestep = _selection.IntervalStart() - 1;
else
_currentOutputTimestep = -1;
NextOutputRow();
}
void ContiguousMS::NextOutputRow() {
int fieldId, a1, a2, dataDescId;
casacore::Vector<double> uvw;
do {
++_currentOutputRow;
if (_currentOutputRow >= _endRow) return;
fieldId = _fieldIdColumn(_currentOutputRow);
a1 = _antenna1Column(_currentOutputRow);
a2 = _antenna2Column(_currentOutputRow);
uvw = _uvwColumn(_currentOutputRow);
dataDescId = _dataDescIdColumn(_currentOutputRow);
if (_currentOutputTime != _timeColumn(_currentOutputRow)) {
++_currentOutputTimestep;
_currentOutputTime = _timeColumn(_currentOutputRow);
}
} while (!_selection.IsSelected(fieldId, _currentOutputTimestep, a1, a2,
uvw.data()) ||
(dataDescId != _dataDescId));
}
double ContiguousMS::StartTime() {
return casacore::MEpoch::ScalarColumn(
*_ms, casacore::MS::columnName(casacore::MS::TIME))(_startRow)
.getValue()
.get();
}
size_t ContiguousMS::NChannels() {
if (_selection.HasChannelRange())
return _selection.ChannelRangeEnd() - _selection.ChannelRangeStart();
else
return _bandData[_dataDescId].ChannelCount();
}
size_t ContiguousMS::NPolarizations() {
switch (_outputPolarization) {
case aocommon::Polarization::Instrumental:
return 4;
case aocommon::Polarization::DiagonalInstrumental:
return 2;
default:
return 1;
}
}
void ContiguousMS::prepareModelColumn() {
InitializeModelColumn(*_ms, _modelColumnName, _modelStorageManager);
_modelColumn =
casacore::ArrayColumn<casacore::Complex>(*_ms, _modelColumnName);
const casacore::IPosition shape(_modelColumn.shape(0));
_modelArray = casacore::Array<std::complex<float>>(shape);
_isModelColumnPrepared = true;
}
void ContiguousMS::WriteModel(const std::complex<float>* buffer, bool addToMS) {
std::unique_ptr<casacore::TableLocker> lock;
if (_useMPI) {
// When using different MPI processes, automatic casacore locks do not work.
// -> Use UserNoReadLocking with explicit write locks.
lock = std::make_unique<casacore::TableLocker>(*_ms,
casacore::FileLocker::Write);
// This resync() is required for synchronizing different MPI processes.
_ms->resync();
}
if (!_isModelColumnPrepared) prepareModelColumn();
size_t startChannel, endChannel;
if (_selection.HasChannelRange()) {
startChannel = _selection.ChannelRangeStart();
endChannel = _selection.ChannelRangeEnd();
} else {
startChannel = 0;
endChannel = _bandData[_dataDescId].ChannelCount();
}
_modelColumn.get(_currentOutputRow, _modelArray);
if (addToMS) {
schaapcommon::reordering::StoreData<true>(_modelArray.data(), startChannel,
endChannel, _inputPolarizations,
buffer, _outputPolarization);
} else {
schaapcommon::reordering::StoreData<false>(_modelArray.data(), startChannel,
endChannel, _inputPolarizations,
buffer, _outputPolarization);
}
_modelColumn.put(_currentOutputRow, _modelArray);
}
void ContiguousMS::MakeIdToMSRowMapping(std::vector<size_t>& idToMSRow) {
idToMSRow = _idToMSRow;
}
} // namespace wsclean
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