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#include "indexer/altitude_loader.hpp"
#include "coding/reader.hpp"
#include "coding/succinct_mapper.hpp"
#include "base/logging.hpp"
#include "base/stl_helpers.hpp"
#include "base/thread.hpp"
#include "defines.hpp"
#include "3party/succinct/mapper.hpp"
namespace
{
template <class TCont>
void LoadAndMap(size_t dataSize, ReaderSource<FilesContainerR::TReader> & src, TCont & cont,
unique_ptr<CopiedMemoryRegion> & region)
{
vector<uint8_t> data(dataSize);
src.Read(data.data(), data.size());
region = make_unique<CopiedMemoryRegion>(move(data));
coding::MapVisitor visitor(region->ImmutableData());
cont.map(visitor);
}
} // namespace
namespace feature
{
AltitudeLoader::AltitudeLoader(MwmValue const & mwmValue)
{
if (mwmValue.GetHeader().GetFormat() < version::Format::v8)
return;
if (!mwmValue.m_cont.IsExist(ALTITUDES_FILE_TAG))
return;
try
{
m_reader = make_unique<FilesContainerR::TReader>(mwmValue.m_cont.GetReader(ALTITUDES_FILE_TAG));
ReaderSource<FilesContainerR::TReader> src(*m_reader);
m_header.Deserialize(src);
LoadAndMap(m_header.GetAltitudeAvailabilitySize(), src, m_altitudeAvailability,
m_altitudeAvailabilityRegion);
LoadAndMap(m_header.GetFeatureTableSize(), src, m_featureTable, m_featureTableRegion);
}
catch (Reader::OpenException const & e)
{
m_header.Reset();
LOG(LERROR, ("Error while reading", ALTITUDES_FILE_TAG, "section.", e.Msg()));
}
}
bool AltitudeLoader::HasAltitudes() const { return m_header.m_minAltitude != kInvalidAltitude; }
TAltitudes const & AltitudeLoader::GetAltitudes(uint32_t featureId, size_t pointCount)
{
if (!HasAltitudes())
{
// The version of mwm is less than version::Format::v8 or there's no altitude section in mwm.
return m_dummy;
}
auto const it = m_cache.find(featureId);
if (it != m_cache.end())
return it->second;
if (!m_altitudeAvailability[featureId])
{
LOG(LINFO, ("Feature featureId =", featureId, "does not contain any altitude information."));
return m_cache.insert(make_pair(featureId, m_dummy)).first->second;
}
uint64_t const r = m_altitudeAvailability.rank(featureId);
CHECK_LESS(r, m_altitudeAvailability.size(), (featureId));
uint64_t const offset = m_featureTable.select(r);
CHECK_LESS_OR_EQUAL(offset, m_featureTable.size(), (featureId));
uint64_t const altitudeInfoOffsetInSection = m_header.m_altitudesOffset + offset;
CHECK_LESS(altitudeInfoOffsetInSection, m_reader->Size(), ());
try
{
Altitudes a;
ReaderSource<FilesContainerR::TReader> src(*m_reader);
src.Skip(altitudeInfoOffsetInSection);
a.Deserialize(m_header.m_minAltitude, pointCount, src);
return m_cache.insert(make_pair(featureId, a.GetAltitudes())).first->second;
}
catch (Reader::OpenException const & e)
{
LOG(LERROR, ("Error while getting altitude data", e.Msg()));
return m_cache.insert(make_pair(featureId, m_dummy)).first->second;
}
}
} // namespace feature
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