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Nexrad File Factory

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This commit is contained in:
Dan Paulat 2022-02-10 22:10:22 -06:00
parent 3620bfd13a
commit a32029cb31
11 changed files with 322 additions and 31 deletions
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66
wxdata/source/scwx/wsr88d/ar2v_file.cpp
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@ -37,7 +37,7 @@ public:
void HandleMessage(std::shared_ptr<rda::Level2Message>& message);
void IndexFile();
void LoadLDMRecords(std::ifstream& f);
void LoadLDMRecords(std::istream& is);
void ParseLDMRecords();
void ProcessRadarData(std::shared_ptr<rda::DigitalRadarData> message);
@ -179,29 +179,40 @@ bool Ar2vFile::LoadFile(const std::string& filename)
if (fileValid)
{
// Read Volume Header Record
p->tapeFilename_.resize(9, ' ');
p->extensionNumber_.resize(3, ' ');
p->icao_.resize(4, ' ');
f.read(&p->tapeFilename_[0], 9);
f.read(&p->extensionNumber_[0], 3);
f.read(reinterpret_cast<char*>(&p->julianDate_), 4);
f.read(reinterpret_cast<char*>(&p->milliseconds_), 4);
f.read(&p->icao_[0], 4);
p->julianDate_ = ntohl(p->julianDate_);
p->milliseconds_ = ntohl(p->milliseconds_);
fileValid = LoadData(f);
}
if (f.eof())
return fileValid;
}
bool Ar2vFile::LoadData(std::istream& is)
{
BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "Loading Data";
bool dataValid = true;
// Read Volume Header Record
p->tapeFilename_.resize(9, ' ');
p->extensionNumber_.resize(3, ' ');
p->icao_.resize(4, ' ');
is.read(&p->tapeFilename_[0], 9);
is.read(&p->extensionNumber_[0], 3);
is.read(reinterpret_cast<char*>(&p->julianDate_), 4);
is.read(reinterpret_cast<char*>(&p->milliseconds_), 4);
is.read(&p->icao_[0], 4);
p->julianDate_ = ntohl(p->julianDate_);
p->milliseconds_ = ntohl(p->milliseconds_);
if (is.eof())
{
BOOST_LOG_TRIVIAL(warning)
<< logPrefix_ << "Could not read Volume Header Record\n";
fileValid = false;
dataValid = false;
}
if (fileValid)
if (dataValid)
{
BOOST_LOG_TRIVIAL(debug)
<< logPrefix_ << "Filename: " << p->tapeFilename_;
@ -212,27 +223,27 @@ bool Ar2vFile::LoadFile(const std::string& filename)
<< logPrefix_ << "Time: " << p->milliseconds_;
BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "ICAO: " << p->icao_;
p->LoadLDMRecords(f);
p->LoadLDMRecords(is);
}
p->IndexFile();
return fileValid;
return dataValid;
}
void Ar2vFileImpl::LoadLDMRecords(std::ifstream& f)
void Ar2vFileImpl::LoadLDMRecords(std::istream& is)
{
BOOST_LOG_TRIVIAL(debug) << logPrefix_ << "Loading LDM Records";
numRecords_ = 0;
while (f.peek() != EOF)
while (is.peek() != EOF)
{
std::streampos startPosition = f.tellg();
std::streampos startPosition = is.tellg();
int32_t controlWord = 0;
size_t recordSize;
f.read(reinterpret_cast<char*>(&controlWord), 4);
is.read(reinterpret_cast<char*>(&controlWord), 4);
controlWord = ntohl(controlWord);
recordSize = std::abs(controlWord);
@ -240,8 +251,13 @@ void Ar2vFileImpl::LoadLDMRecords(std::ifstream& f)
BOOST_LOG_TRIVIAL(trace)
<< logPrefix_ << "LDM Record Found: Size = " << recordSize << " bytes";
if (recordSize == 0)
{
break;
}
boost::iostreams::filtering_streambuf<boost::iostreams::input> in;
util::rangebuf r(f.rdbuf(), recordSize);
util::rangebuf r(is.rdbuf(), recordSize);
in.push(boost::iostreams::bzip2_decompressor());
in.push(r);
@ -261,7 +277,7 @@ void Ar2vFileImpl::LoadLDMRecords(std::ifstream& f)
BOOST_LOG_TRIVIAL(warning)
<< logPrefix_ << "Error decompressing record " << numRecords_;
f.seekg(startPosition + std::streampos(recordSize));
is.seekg(startPosition + std::streampos(recordSize));
}
++numRecords_;