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109 lines
3.7 KiB
C++
109 lines
3.7 KiB
C++
/*
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MDAL - Mesh Data Abstraction Library (MIT License)
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Copyright (C) 2018 Peter Petrik (zilolv at gmail dot com)
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*/
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#ifndef MDAL_GDAL_HPP
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#define MDAL_GDAL_HPP
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#include "gdal.h"
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#include <string>
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#include <vector>
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#include <map>
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#include "mdal_data_model.hpp"
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#include "mdal.h"
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#include "mdal_utils.hpp"
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#include "mdal_driver.hpp"
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namespace MDAL
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{
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class GdalDataset
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{
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public:
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GdalDataset(): mHDataset( nullptr ) {}
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~GdalDataset()
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{
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if ( mHDataset ) GDALClose( mHDataset );
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}
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void init( const std::string &dsName );
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std::string mDatasetName;
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std::string mProj;
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GDALDatasetH mHDataset;
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unsigned int mNBands; /* number of bands */
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unsigned int mXSize; /* number of x pixels */
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unsigned int mYSize; /* number of y pixels */
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unsigned int mNPoints; /* nodes count */
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unsigned int mNVolumes; /* Faces count */
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double mGT[6]; /* affine transform matrix */
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private:
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void parseParameters();
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void parseProj();
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};
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class DriverGdal: public Driver
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{
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public:
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DriverGdal( const std::string &name,
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const std::string &description,
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const std::string &filter,
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const std::string &gdalDriverName );
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virtual ~DriverGdal() override = default;
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bool canRead( const std::string &uri ) override;
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std::unique_ptr< Mesh > load( const std::string &fileName, MDAL_Status *status ) override;
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protected:
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typedef std::map<std::string, std::string> metadata_hash; // KEY, VALUE
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/* return true on failure */
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virtual bool parseBandInfo( const GdalDataset *cfGDALDataset,
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const metadata_hash &metadata, std::string &band_name, double *time, bool *is_vector, bool *is_x ) = 0;
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virtual double parseMetadataTime( const std::string &time_s );
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virtual std::string GDALFileName( const std::string &fileName ); /* some formats require e.g. adding driver name at the beginning */
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virtual std::vector<std::string> parseDatasetNames( const std::string &fileName );
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virtual void parseGlobals( const metadata_hash &metadata ) {MDAL_UNUSED( metadata );}
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void parseBandIsVector( std::string &band_name, bool *is_vector, bool *is_x );
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private:
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typedef std::map<double, std::vector<GDALRasterBandH> > timestep_map; //TIME (sorted), [X, Y]
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typedef std::map<std::string, timestep_map > data_hash; //Data Type, TIME (sorted), [X, Y]
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typedef std::vector<std::shared_ptr<GdalDataset>> gdal_datasets_vector; //GDAL (Sub)Datasets,
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void registerDriver();
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void initFaces( Vertices &nodes, Faces &Faces, bool is_longitude_shifted );
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bool initVertices( Vertices &vertices ); //returns is_longitude_shifted
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const GdalDataset *meshGDALDataset();
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bool meshes_equals( const GdalDataset *ds1, const GdalDataset *ds2 ) const;
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metadata_hash parseMetadata( GDALMajorObjectH gdalBand, const char *pszDomain = nullptr );
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void addDataToOutput( GDALRasterBandH raster_band, std::shared_ptr<MemoryDataset> tos, bool is_vector, bool is_x );
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bool addSrcProj();
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void activateFaces( std::shared_ptr<MemoryDataset> tos );
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void addDatasetGroups();
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void createMesh();
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void parseRasterBands( const GdalDataset *cfGDALDataset );
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void fixRasterBands();
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std::string mFileName;
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const std::string mGdalDriverName; /* GDAL driver name */
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double *mPafScanline; /* temporary buffer for reading one raster line */
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std::unique_ptr< MemoryMesh > mMesh;
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gdal_datasets_vector gdal_datasets;
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data_hash mBands; /* raster bands GDAL handle */
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};
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} // namespace MDAL
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#endif // MDAL_GDAL_HPP
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