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#include <cassert>
#include <iostream>
#include <sstream>
#include <stdexcept>
#include "../algorithms/timefrequencystatistics.h"
#include "msimageset.h"
#include "../msio/directbaselinereader.h"
#include "../msio/reorderingbaselinereader.h"
#include "../msio/memorybaselinereader.h"
#include "../util/logger.h"
namespace imagesets {
void MSImageSet::Initialize() {
Logger::Debug << "Initializing image set...\n";
Logger::Debug << "Antennas: " << _metaData.AntennaCount() << '\n';
_sequences = _metaData.GetSequences();
Logger::Debug << "Unique sequences: " << _sequences.size() << '\n';
if (_sequences.empty())
throw std::runtime_error(
"Trying to open a measurement set with no sequences");
initReader();
_bandCount = _metaData.BandCount();
_fieldCount = _metaData.FieldCount();
_sequencesPerBaselineCount = _metaData.SequenceCount();
Logger::Debug << "Bands: " << _bandCount << '\n';
}
void MSImageSet::initReader() {
if (_reader == nullptr) {
BaselineIOMode selected_mode = _ioMode;
if (selected_mode == AutoReadMode) {
if (MemoryBaselineReader::IsEnoughMemoryAvailable(
BaselineReader::MeasurementSetIntervalDataSize(
_msFile, _intervalStart, _intervalEnd)))
selected_mode = MemoryReadMode;
else
selected_mode = ReorderingReadMode;
}
switch (selected_mode) {
case ReorderingReadMode: {
ReorderingBaselineReader* indirectReader =
new ReorderingBaselineReader(_msFile);
indirectReader->SetReadUVW(_readUVW);
_reader = BaselineReaderPtr(indirectReader);
} break;
case DirectReadMode:
_reader = BaselineReaderPtr(new DirectBaselineReader(_msFile));
break;
case MemoryReadMode:
_reader = BaselineReaderPtr(new MemoryBaselineReader(_msFile));
break;
case AutoReadMode:
assert(false);
break;
}
}
_reader->SetDataColumnName(_dataColumnName);
_reader->SetInterval(_intervalStart, _intervalEnd);
_reader->SetReadFlags(_readFlags);
_reader->SetReadData(true);
}
size_t MSImageSet::EndTimeIndex(const ImageSetIndex& index) const {
return _reader->MetaData()
.GetObservationTimesSet(GetSequenceId(index))
.size();
}
std::vector<double> MSImageSet::ObservationTimesVector(
const ImageSetIndex& index) {
// StartIndex(msIndex), EndIndex(msIndex)
const unsigned sequenceId = _sequences[index.Value()].sequenceId;
const std::set<double>& obsTimesSet =
_reader->MetaData().GetObservationTimesSet(sequenceId);
std::vector<double> obs(obsTimesSet.begin(), obsTimesSet.end());
return obs;
}
TimeFrequencyMetaDataCPtr MSImageSet::createMetaData(const ImageSetIndex& index,
std::vector<UVW>& uvw) {
TimeFrequencyMetaData* metaData = new TimeFrequencyMetaData();
metaData->SetAntenna1(_metaData.GetAntennaInfo(GetAntenna1(index)));
metaData->SetAntenna2(_metaData.GetAntennaInfo(GetAntenna2(index)));
metaData->SetBand(_metaData.GetBandInfo(GetBand(index)));
metaData->SetField(_metaData.GetFieldInfo(GetField(index)));
metaData->SetObservationTimes(ObservationTimesVector(index));
if (_reader != nullptr) {
metaData->SetUVW(uvw);
}
return TimeFrequencyMetaDataCPtr(metaData);
}
std::string MSImageSet::Description(const ImageSetIndex& index) const {
std::stringstream sstream;
const MSMetaData::Sequence& sequence = _sequences[index.Value()];
size_t antenna1 = sequence.antenna1, antenna2 = sequence.antenna2,
band = sequence.spw, sequenceId = sequence.sequenceId;
const AntennaInfo info1 = GetAntennaInfo(antenna1);
const AntennaInfo info2 = GetAntennaInfo(antenna2);
sstream << info1.station << ' ' << info1.name << " x " << info2.station << ' '
<< info2.name;
if (BandCount() > 1) {
BandInfo bandInfo = GetBandInfo(band);
const double bandStart =
round(bandInfo.channels.front().frequencyHz / 100000.0) / 10.0;
const double bandEnd =
round(bandInfo.channels.back().frequencyHz / 100000.0) / 10.0;
sstream << ", spw " << band << " (" << bandStart << "MHz -" << bandEnd
<< "MHz)";
}
if (SequenceCount() > 1) {
sstream << ", seq " << sequenceId;
}
return sstream.str();
}
size_t MSImageSet::findBaselineIndex(size_t antenna1, size_t antenna2,
size_t band, size_t sequenceId) const {
size_t index = 0;
for (std::vector<MSMetaData::Sequence>::const_iterator i = _sequences.begin();
i != _sequences.end(); ++i) {
const bool antennaMatch =
(i->antenna1 == antenna1 && i->antenna2 == antenna2) ||
(i->antenna1 == antenna2 && i->antenna2 == antenna1);
if (antennaMatch && i->spw == band && i->sequenceId == sequenceId) {
return index;
}
++index;
}
return not_found;
}
void MSImageSet::AddReadRequest(const ImageSetIndex& index) {
const BaselineData newRequest(index);
_baselineData.push_back(newRequest);
}
void MSImageSet::PerformReadRequests(class ProgressListener& progress) {
for (BaselineData& bd : _baselineData) {
_reader->AddReadRequest(GetAntenna1(bd.Index()), GetAntenna2(bd.Index()),
GetBand(bd.Index()), GetSequenceId(bd.Index()),
StartTimeIndex(bd.Index()),
EndTimeIndex(bd.Index()));
}
_reader->PerformReadRequests(progress);
for (std::vector<BaselineData>::iterator i = _baselineData.begin();
i != _baselineData.end(); ++i) {
if (!i->Data().IsEmpty())
throw std::runtime_error(
"ReadRequest() called, but a previous read request was not "
"completely processed by calling GetNextRequested().");
std::vector<UVW> uvw;
const TimeFrequencyData data = _reader->GetNextResult(uvw);
i->SetData(data);
const TimeFrequencyMetaDataCPtr metaData = createMetaData(i->Index(), uvw);
i->SetMetaData(metaData);
}
}
std::unique_ptr<BaselineData> MSImageSet::GetNextRequested() {
std::unique_ptr<BaselineData> top(new BaselineData(_baselineData.front()));
_baselineData.erase(_baselineData.begin());
if (top->Data().IsEmpty())
throw std::runtime_error(
"Calling GetNextRequested(), but requests were not read with "
"LoadRequests.");
return top;
}
void MSImageSet::AddWriteFlagsTask(const ImageSetIndex& index,
std::vector<Mask2DCPtr>& flags) {
const size_t seqIndex = index.Value();
initReader();
const size_t a1 = _sequences[seqIndex].antenna1;
const size_t a2 = _sequences[seqIndex].antenna2;
const size_t b = _sequences[seqIndex].spw;
const size_t s = _sequences[seqIndex].sequenceId;
std::vector<Mask2DCPtr> allFlags;
if (flags.size() > _reader->Polarizations().size()) {
throw std::runtime_error(
"Trying to write more polarizations to image set than available");
} else if (flags.size() < _reader->Polarizations().size()) {
if (flags.size() == 1)
for (size_t i = 0; i < _reader->Polarizations().size(); ++i)
allFlags.emplace_back(flags[0]);
else
throw std::runtime_error(
"Incorrect number of polarizations in write action");
} else {
allFlags = flags;
}
_reader->AddWriteTask(allFlags, a1, a2, b, s);
}
void MSImageSet::PerformWriteFlagsTask() {
_reader->PerformFlagWriteRequests();
}
} // namespace imagesets
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