/******************************************************************************
 * $Id$
 *
 * Project:  OpenGIS Simple Features Reference Implementation
 * Purpose:  C API and constant declarations for OGR Spatial References.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 2000, Frank Warmerdam
 * Copyright (c) 2008-2013, Even Rouault <even dot rouault at spatialys.com>
 *
 * SPDX-License-Identifier: MIT
 ****************************************************************************/

#ifndef OGR_SRS_API_H_INCLUDED
#define OGR_SRS_API_H_INCLUDED

#include <stdbool.h>

#ifndef SWIG
#include "ogr_core.h"

CPL_C_START

/**
 * \file ogr_srs_api.h
 *
 * C spatial reference system services and defines.
 *
 * See also: ogr_spatialref.h
 */

/** Axis orientations (corresponds to CS_AxisOrientationEnum). */
typedef enum
{
    OAO_Other = 0, /**< Other */
    OAO_North = 1, /**< North */
    OAO_South = 2, /**< South */
    OAO_East = 3,  /**< East */
    OAO_West = 4,  /**< West */
    OAO_Up = 5,    /**< Up (to space) */
    OAO_Down = 6   /**< Down (to Earth center) */
} OGRAxisOrientation;

const char CPL_DLL *OSRAxisEnumToName(OGRAxisOrientation eOrientation);

#endif  // ndef SWIG

/* ==================================================================== */
/*      Some standard WKT geographic coordinate systems.                */
/* ==================================================================== */

#ifdef USE_DEPRECATED_SRS_WKT_WGS84
#define SRS_WKT_WGS84                                                          \
    "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS "                     \
    "84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY["      \
    "\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]]" \
    ",UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],"       \
    "AUTHORITY[\"EPSG\",\"4326\"]]"
#endif

/** WGS 84 geodetic (lat/long) WKT / EPSG:4326 with lat,long ordering */
#define SRS_WKT_WGS84_LAT_LONG                                                 \
    "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS "                     \
    "84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY["      \
    "\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]]" \
    ",UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AXIS["  \
    "\"Latitude\",NORTH],AXIS[\"Longitude\",EAST],AUTHORITY[\"EPSG\","         \
    "\"4326\"]]"

/* ==================================================================== */
/*      Some "standard" strings.                                        */
/* ==================================================================== */

/** Albers_Conic_Equal_Area projection */
#define SRS_PT_ALBERS_CONIC_EQUAL_AREA "Albers_Conic_Equal_Area"
/** Azimuthal_Equidistant projection */
#define SRS_PT_AZIMUTHAL_EQUIDISTANT "Azimuthal_Equidistant"
/** Cassini_Soldner projection */
#define SRS_PT_CASSINI_SOLDNER "Cassini_Soldner"
/** Cylindrical_Equal_Area projection */
#define SRS_PT_CYLINDRICAL_EQUAL_AREA "Cylindrical_Equal_Area"
/** Cylindrical_Equal_Area projection */
#define SRS_PT_BONNE "Bonne"
/** Eckert_I projection */
#define SRS_PT_ECKERT_I "Eckert_I"
/** Eckert_II projection */
#define SRS_PT_ECKERT_II "Eckert_II"
/** Eckert_III projection */
#define SRS_PT_ECKERT_III "Eckert_III"
/** Eckert_IV projection */
#define SRS_PT_ECKERT_IV "Eckert_IV"
/** Eckert_V projection */
#define SRS_PT_ECKERT_V "Eckert_V"
/** Eckert_VI projection */
#define SRS_PT_ECKERT_VI "Eckert_VI"
/** Equidistant_Conic projection */
#define SRS_PT_EQUIDISTANT_CONIC "Equidistant_Conic"
/** Equirectangular projection */
#define SRS_PT_EQUIRECTANGULAR "Equirectangular"
/** Gall_Stereographic projection */
#define SRS_PT_GALL_STEREOGRAPHIC "Gall_Stereographic"
/** Gauss_Schreiber_Transverse_Mercator projection */
#define SRS_PT_GAUSSSCHREIBERTMERCATOR "Gauss_Schreiber_Transverse_Mercator"
/** Geostationary_Satellite projection */
#define SRS_PT_GEOSTATIONARY_SATELLITE "Geostationary_Satellite"
/** Goode_Homolosine projection */
#define SRS_PT_GOODE_HOMOLOSINE "Goode_Homolosine"
/** Interrupted_Goode_Homolosine projection */
#define SRS_PT_IGH "Interrupted_Goode_Homolosine"
/** Gnomonic projection */
#define SRS_PT_GNOMONIC "Gnomonic"
/** Hotine_Oblique_Mercator_Azimuth_Center projection */
#define SRS_PT_HOTINE_OBLIQUE_MERCATOR_AZIMUTH_CENTER                          \
    "Hotine_Oblique_Mercator_Azimuth_Center"
/** Hotine_Oblique_Mercator projection */
#define SRS_PT_HOTINE_OBLIQUE_MERCATOR "Hotine_Oblique_Mercator"
/** Hotine_Oblique_Mercator_Two_Point_Natural_Origin projection */
#define SRS_PT_HOTINE_OBLIQUE_MERCATOR_TWO_POINT_NATURAL_ORIGIN                \
    "Hotine_Oblique_Mercator_Two_Point_Natural_Origin"
/** Laborde_Oblique_Mercator projection */
#define SRS_PT_LABORDE_OBLIQUE_MERCATOR "Laborde_Oblique_Mercator"
/** Lambert_Conformal_Conic_1SP projection */
#define SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP "Lambert_Conformal_Conic_1SP"
/** Lambert_Conformal_Conic_2SP projection */
#define SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP "Lambert_Conformal_Conic_2SP"
/** Lambert_Conformal_Conic_2SP_Belgium projection */
#define SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP_BELGIUM                             \
    "Lambert_Conformal_Conic_2SP_Belgium"
/** Lambert_Azimuthal_Equal_Area projection */
#define SRS_PT_LAMBERT_AZIMUTHAL_EQUAL_AREA "Lambert_Azimuthal_Equal_Area"
/** Mercator_1SP projection */
#define SRS_PT_MERCATOR_1SP "Mercator_1SP"
/** Mercator_2SP projection */
#define SRS_PT_MERCATOR_2SP "Mercator_2SP"
/** Mercator_Auxiliary_Sphere is used used by ESRI to mean EPSG:3875 */
#define SRS_PT_MERCATOR_AUXILIARY_SPHERE "Mercator_Auxiliary_Sphere"
/** Miller_Cylindrical projection */
#define SRS_PT_MILLER_CYLINDRICAL "Miller_Cylindrical"
/** Mollweide projection */
#define SRS_PT_MOLLWEIDE "Mollweide"
/** New_Zealand_Map_Grid projection */
#define SRS_PT_NEW_ZEALAND_MAP_GRID "New_Zealand_Map_Grid"
/** Oblique_Stereographic projection */
#define SRS_PT_OBLIQUE_STEREOGRAPHIC "Oblique_Stereographic"
/** Orthographic projection */
#define SRS_PT_ORTHOGRAPHIC "Orthographic"
/** Polar_Stereographic projection */
#define SRS_PT_POLAR_STEREOGRAPHIC "Polar_Stereographic"
/** Polyconic projection */
#define SRS_PT_POLYCONIC "Polyconic"
/** Robinson projection */
#define SRS_PT_ROBINSON "Robinson"
/** Sinusoidal projection */
#define SRS_PT_SINUSOIDAL "Sinusoidal"
/** Stereographic projection */
#define SRS_PT_STEREOGRAPHIC "Stereographic"
/** Swiss_Oblique_Cylindrical projection */
#define SRS_PT_SWISS_OBLIQUE_CYLINDRICAL "Swiss_Oblique_Cylindrical"
/** Transverse_Mercator projection */
#define SRS_PT_TRANSVERSE_MERCATOR "Transverse_Mercator"
/** Transverse_Mercator_South_Orientated projection */
#define SRS_PT_TRANSVERSE_MERCATOR_SOUTH_ORIENTED                              \
    "Transverse_Mercator_South_Orientated"

/* special mapinfo variants on Transverse Mercator */
/** Transverse_Mercator_MapInfo_21 projection */
#define SRS_PT_TRANSVERSE_MERCATOR_MI_21 "Transverse_Mercator_MapInfo_21"
/** Transverse_Mercator_MapInfo_22 projection */
#define SRS_PT_TRANSVERSE_MERCATOR_MI_22 "Transverse_Mercator_MapInfo_22"
/** Transverse_Mercator_MapInfo_23 projection */
#define SRS_PT_TRANSVERSE_MERCATOR_MI_23 "Transverse_Mercator_MapInfo_23"
/** Transverse_Mercator_MapInfo_24 projection */
#define SRS_PT_TRANSVERSE_MERCATOR_MI_24 "Transverse_Mercator_MapInfo_24"
/** Transverse_Mercator_MapInfo_25 projection */
#define SRS_PT_TRANSVERSE_MERCATOR_MI_25 "Transverse_Mercator_MapInfo_25"

/** Tunisia_Mining_Grid projection */
#define SRS_PT_TUNISIA_MINING_GRID "Tunisia_Mining_Grid"
/** Two_Point_Equidistant projection */
#define SRS_PT_TWO_POINT_EQUIDISTANT "Two_Point_Equidistant"
/** VanDerGrinten projection */
#define SRS_PT_VANDERGRINTEN "VanDerGrinten"
/** Krovak projection */
#define SRS_PT_KROVAK "Krovak"
/** International_Map_of_the_World_Polyconic projection */
#define SRS_PT_IMW_POLYCONIC "International_Map_of_the_World_Polyconic"
/** Wagner_I projection */
#define SRS_PT_WAGNER_I "Wagner_I"
/** Wagner_II projection */
#define SRS_PT_WAGNER_II "Wagner_II"
/** Wagner_III projection */
#define SRS_PT_WAGNER_III "Wagner_III"
/** Wagner_IV projection */
#define SRS_PT_WAGNER_IV "Wagner_IV"
/** Wagner_V projection */
#define SRS_PT_WAGNER_V "Wagner_V"
/** Wagner_VI projection */
#define SRS_PT_WAGNER_VI "Wagner_VI"
/** Wagner_VII projection */
#define SRS_PT_WAGNER_VII "Wagner_VII"
/** Quadrilateralized_Spherical_Cube projection */
#define SRS_PT_QSC "Quadrilateralized_Spherical_Cube"
/** Aitoff projection */
#define SRS_PT_AITOFF "Aitoff"
/** Winkel_I projection */
#define SRS_PT_WINKEL_I "Winkel_I"
/** Winkel_II projection */
#define SRS_PT_WINKEL_II "Winkel_II"
/** Winkel_Tripel projection */
#define SRS_PT_WINKEL_TRIPEL "Winkel_Tripel"
/** Craster_Parabolic projection */
#define SRS_PT_CRASTER_PARABOLIC "Craster_Parabolic"
/** Loximuthal projection */
#define SRS_PT_LOXIMUTHAL "Loximuthal"
/** Quartic_Authalic projection */
#define SRS_PT_QUARTIC_AUTHALIC "Quartic_Authalic"
/** Spherical_Cross_Track_Height projection */
#define SRS_PT_SCH "Spherical_Cross_Track_Height"

/** central_meridian projection parameter */
#define SRS_PP_CENTRAL_MERIDIAN "central_meridian"
/** scale_factor projection parameter */
#define SRS_PP_SCALE_FACTOR "scale_factor"
/** standard_parallel_1 projection parameter */
#define SRS_PP_STANDARD_PARALLEL_1 "standard_parallel_1"
/** standard_parallel_2 projection parameter */
#define SRS_PP_STANDARD_PARALLEL_2 "standard_parallel_2"
/** pseudo_standard_parallel_1 projection parameter */
#define SRS_PP_PSEUDO_STD_PARALLEL_1 "pseudo_standard_parallel_1"
/** longitude_of_center projection parameter */
#define SRS_PP_LONGITUDE_OF_CENTER "longitude_of_center"
/** latitude_of_center projection parameter */
#define SRS_PP_LATITUDE_OF_CENTER "latitude_of_center"
/** longitude_of_origin projection parameter */
#define SRS_PP_LONGITUDE_OF_ORIGIN "longitude_of_origin"
/** latitude_of_origin projection parameter */
#define SRS_PP_LATITUDE_OF_ORIGIN "latitude_of_origin"
/** false_easting projection parameter */
#define SRS_PP_FALSE_EASTING "false_easting"
/** false_northing projection parameter */
#define SRS_PP_FALSE_NORTHING "false_northing"
/** azimuth projection parameter */
#define SRS_PP_AZIMUTH "azimuth"
/** longitude_of_point_1 projection parameter */
#define SRS_PP_LONGITUDE_OF_POINT_1 "longitude_of_point_1"
/** latitude_of_point_1 projection parameter */
#define SRS_PP_LATITUDE_OF_POINT_1 "latitude_of_point_1"
/** longitude_of_point_2 projection parameter */
#define SRS_PP_LONGITUDE_OF_POINT_2 "longitude_of_point_2"
/** latitude_of_point_2 projection parameter */
#define SRS_PP_LATITUDE_OF_POINT_2 "latitude_of_point_2"
/** longitude_of_point_3 projection parameter */
#define SRS_PP_LONGITUDE_OF_POINT_3 "longitude_of_point_3"
/** latitude_of_point_3 projection parameter */
#define SRS_PP_LATITUDE_OF_POINT_3 "latitude_of_point_3"
/** rectified_grid_angle projection parameter */
#define SRS_PP_RECTIFIED_GRID_ANGLE "rectified_grid_angle"
/** landsat_number projection parameter */
#define SRS_PP_LANDSAT_NUMBER "landsat_number"
/** path_number projection parameter */
#define SRS_PP_PATH_NUMBER "path_number"
/** perspective_point_height projection parameter */
#define SRS_PP_PERSPECTIVE_POINT_HEIGHT "perspective_point_height"
/** satellite_height projection parameter */
#define SRS_PP_SATELLITE_HEIGHT "satellite_height"
/** fipszone projection parameter */
#define SRS_PP_FIPSZONE "fipszone"
/** zone projection parameter */
#define SRS_PP_ZONE "zone"
/** Latitude_Of_1st_Point projection parameter */
#define SRS_PP_LATITUDE_OF_1ST_POINT "Latitude_Of_1st_Point"
/** Longitude_Of_1st_Point projection parameter */
#define SRS_PP_LONGITUDE_OF_1ST_POINT "Longitude_Of_1st_Point"
/** Latitude_Of_2nd_Point projection parameter */
#define SRS_PP_LATITUDE_OF_2ND_POINT "Latitude_Of_2nd_Point"
/** Longitude_Of_2nd_Point projection parameter */
#define SRS_PP_LONGITUDE_OF_2ND_POINT "Longitude_Of_2nd_Point"
/** peg_point_latitude projection parameter */
#define SRS_PP_PEG_POINT_LATITUDE "peg_point_latitude"
/** peg_point_longitude projection parameter */
#define SRS_PP_PEG_POINT_LONGITUDE "peg_point_longitude"
/** peg_point_heading projection parameter */
#define SRS_PP_PEG_POINT_HEADING "peg_point_heading"
/** peg_point_height projection parameter */
#define SRS_PP_PEG_POINT_HEIGHT "peg_point_height"

/** Linear unit Meter */
#define SRS_UL_METER "Meter"
/** Linear unit Foot (International) */
#define SRS_UL_FOOT "Foot (International)" /* or just "FOOT"? */
/** Linear unit Foot (International) conversion factor to meter*/
#define SRS_UL_FOOT_CONV "0.3048"
/** Linear unit Foot */
#define SRS_UL_US_FOOT "Foot_US" /* or "US survey foot" from EPSG */
/** Linear unit Foot conversion factor to meter */
#define SRS_UL_US_FOOT_CONV "0.3048006096012192"
/** Linear unit Nautical Mile */
#define SRS_UL_NAUTICAL_MILE "Nautical Mile"
/** Linear unit Nautical Mile conversion factor to meter */
#define SRS_UL_NAUTICAL_MILE_CONV "1852.0"
/** Linear unit Link */
#define SRS_UL_LINK "Link" /* Based on US Foot */
/** Linear unit Link conversion factor to meter */
#define SRS_UL_LINK_CONV "0.20116684023368047"
/** Linear unit Chain */
#define SRS_UL_CHAIN "Chain" /* based on US Foot */
/** Linear unit Chain conversion factor to meter */
#define SRS_UL_CHAIN_CONV "20.116684023368047"
/** Linear unit Rod */
#define SRS_UL_ROD "Rod" /* based on US Foot */
/** Linear unit Rod conversion factor to meter */
#define SRS_UL_ROD_CONV "5.02921005842012"
/** Linear unit Link_Clarke */
#define SRS_UL_LINK_Clarke "Link_Clarke"
/** Linear unit Link_Clarke conversion factor to meter */
#define SRS_UL_LINK_Clarke_CONV "0.2011661949"

/** Linear unit Kilometer */
#define SRS_UL_KILOMETER "Kilometer"
/** Linear unit Kilometer conversion factor to meter */
#define SRS_UL_KILOMETER_CONV "1000."
/** Linear unit Decimeter */
#define SRS_UL_DECIMETER "Decimeter"
/** Linear unit Decimeter conversion factor to meter */
#define SRS_UL_DECIMETER_CONV "0.1"
/** Linear unit Decimeter */
#define SRS_UL_CENTIMETER "Centimeter"
/** Linear unit Decimeter conversion factor to meter */
#define SRS_UL_CENTIMETER_CONV "0.01"
/** Linear unit Millimeter */
#define SRS_UL_MILLIMETER "Millimeter"
/** Linear unit Millimeter conversion factor to meter */
#define SRS_UL_MILLIMETER_CONV "0.001"
/** Linear unit Nautical_Mile_International */
#define SRS_UL_INTL_NAUT_MILE "Nautical_Mile_International"
/** Linear unit Nautical_Mile_International conversion factor to meter */
#define SRS_UL_INTL_NAUT_MILE_CONV "1852.0"
/** Linear unit Inch_International */
#define SRS_UL_INTL_INCH "Inch_International"
/** Linear unit Inch_International conversion factor to meter */
#define SRS_UL_INTL_INCH_CONV "0.0254"
/** Linear unit Foot_International */
#define SRS_UL_INTL_FOOT "Foot_International"
/** Linear unit Foot_International conversion factor to meter */
#define SRS_UL_INTL_FOOT_CONV "0.3048"
/** Linear unit Yard_International */
#define SRS_UL_INTL_YARD "Yard_International"
/** Linear unit Yard_International conversion factor to meter */
#define SRS_UL_INTL_YARD_CONV "0.9144"
/** Linear unit Statute_Mile_International */
#define SRS_UL_INTL_STAT_MILE "Statute_Mile_International"
/** Linear unit Statute_Mile_Internationalconversion factor to meter */
#define SRS_UL_INTL_STAT_MILE_CONV "1609.344"
/** Linear unit Fathom_International */
#define SRS_UL_INTL_FATHOM "Fathom_International"
/** Linear unit Fathom_International conversion factor to meter */
#define SRS_UL_INTL_FATHOM_CONV "1.8288"
/** Linear unit Chain_International */
#define SRS_UL_INTL_CHAIN "Chain_International"
/** Linear unit Chain_International conversion factor to meter */
#define SRS_UL_INTL_CHAIN_CONV "20.1168"
/** Linear unit Link_International */
#define SRS_UL_INTL_LINK "Link_International"
/** Linear unit Link_International conversion factor to meter */
#define SRS_UL_INTL_LINK_CONV "0.201168"
/** Linear unit Inch_US_Surveyor */
#define SRS_UL_US_INCH "Inch_US_Surveyor"
/** Linear unit Inch_US_Surveyor conversion factor to meter */
#define SRS_UL_US_INCH_CONV "0.025400050800101603"
/** Linear unit Yard_US_Surveyor */
#define SRS_UL_US_YARD "Yard_US_Surveyor"
/** Linear unit Yard_US_Surveyor conversion factor to meter */
#define SRS_UL_US_YARD_CONV "0.914401828803658"
/** Linear unit Chain_US_Surveyor */
#define SRS_UL_US_CHAIN "Chain_US_Surveyor"
/** Linear unit Chain_US_Surveyor conversion factor to meter */
#define SRS_UL_US_CHAIN_CONV "20.11684023368047"
/** Linear unit Statute_Mile_US_Surveyor */
#define SRS_UL_US_STAT_MILE "Statute_Mile_US_Surveyor"
/** Linear unit Statute_Mile_US_Surveyor conversion factor to meter */
#define SRS_UL_US_STAT_MILE_CONV "1609.347218694437"
/** Linear unit Yard_Indian */
#define SRS_UL_INDIAN_YARD "Yard_Indian"
/** Linear unit Yard_Indian conversion factor to meter */
#define SRS_UL_INDIAN_YARD_CONV "0.91439523"
/** Linear unit Foot_Indian */
#define SRS_UL_INDIAN_FOOT "Foot_Indian"
/** Linear unit Foot_Indian conversion factor to meter */
#define SRS_UL_INDIAN_FOOT_CONV "0.30479841"
/** Linear unit Chain_Indian */
#define SRS_UL_INDIAN_CHAIN "Chain_Indian"
/** Linear unit Chain_Indian conversion factor to meter */
#define SRS_UL_INDIAN_CHAIN_CONV "20.11669506"

/** Angular unit degree */
#define SRS_UA_DEGREE "degree"
/** Angular unit degree conversion factor to radians */
#define SRS_UA_DEGREE_CONV "0.0174532925199433"
/** Angular unit radian */
#define SRS_UA_RADIAN "radian"

/** Prime meridian Greenwich */
#define SRS_PM_GREENWICH "Greenwich"

/** North_American_Datum_1927 datum name */
#define SRS_DN_NAD27 "North_American_Datum_1927"
/** North_American_Datum_1983 datum name */
#define SRS_DN_NAD83 "North_American_Datum_1983"
/** WGS_1972 datum name */
#define SRS_DN_WGS72 "WGS_1972"
/** WGS_1984 datum name */
#define SRS_DN_WGS84 "WGS_1984"

/** Semi-major axis of the WGS84 ellipsoid */
#define SRS_WGS84_SEMIMAJOR 6378137.0
/** Inverse flattening of the WGS84 ellipsoid */
#define SRS_WGS84_INVFLATTENING 298.257223563

#ifndef SWIG
/* -------------------------------------------------------------------- */
/*      C Wrappers for C++ objects and methods.                         */
/* -------------------------------------------------------------------- */
#ifndef DEFINED_OGRSpatialReferenceH
/*! @cond Doxygen_Suppress */
#define DEFINED_OGRSpatialReferenceH
/*! @endcond */

#ifdef DEBUG
typedef struct OGRSpatialReferenceHS *OGRSpatialReferenceH;
typedef struct OGRCoordinateTransformationHS *OGRCoordinateTransformationH;
#else
/** Opaque type for a Spatial Reference object */
typedef void *OGRSpatialReferenceH;
/** Opaque type for a coordinate transformation object */
typedef void *OGRCoordinateTransformationH;
#endif

#endif

void CPL_DLL OSRSetPROJSearchPaths(const char *const *papszPaths);
char CPL_DLL **OSRGetPROJSearchPaths(void);
void CPL_DLL OSRSetPROJAuxDbPaths(const char *const *papszPaths);
char CPL_DLL **OSRGetPROJAuxDbPaths(void);
void CPL_DLL OSRSetPROJEnableNetwork(int enabled);
int CPL_DLL OSRGetPROJEnableNetwork(void);
void CPL_DLL OSRGetPROJVersion(int *pnMajor, int *pnMinor, int *pnPatch);

OGRSpatialReferenceH CPL_DLL CPL_STDCALL
OSRNewSpatialReference(const char * /* = NULL */);
OGRSpatialReferenceH CPL_DLL CPL_STDCALL OSRCloneGeogCS(OGRSpatialReferenceH);
OGRSpatialReferenceH CPL_DLL CPL_STDCALL OSRClone(OGRSpatialReferenceH);
void CPL_DLL CPL_STDCALL OSRDestroySpatialReference(OGRSpatialReferenceH);

int CPL_DLL OSRReference(OGRSpatialReferenceH);
int CPL_DLL OSRDereference(OGRSpatialReferenceH);
void CPL_DLL OSRRelease(OGRSpatialReferenceH);

OGRErr CPL_DLL OSRValidate(OGRSpatialReferenceH);

OGRErr CPL_DLL CPL_STDCALL OSRImportFromEPSG(OGRSpatialReferenceH, int);
OGRErr CPL_DLL CPL_STDCALL OSRImportFromEPSGA(OGRSpatialReferenceH, int);
OGRErr CPL_DLL OSRImportFromWkt(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRImportFromProj4(OGRSpatialReferenceH, const char *);
OGRErr CPL_DLL OSRImportFromESRI(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRImportFromPCI(OGRSpatialReferenceH hSRS, const char *,
                                const char *, double *);
OGRErr CPL_DLL OSRImportFromUSGS(OGRSpatialReferenceH, long, long, double *,
                                 long);
OGRErr CPL_DLL OSRImportFromXML(OGRSpatialReferenceH, const char *);
OGRErr CPL_DLL OSRImportFromDict(OGRSpatialReferenceH, const char *,
                                 const char *);
OGRErr CPL_DLL OSRImportFromPanorama(OGRSpatialReferenceH, long, long, long,
                                     double *);
OGRErr CPL_DLL OSRImportFromOzi(OGRSpatialReferenceH, const char *const *);
OGRErr CPL_DLL OSRImportFromMICoordSys(OGRSpatialReferenceH, const char *);
OGRErr CPL_DLL OSRImportFromERM(OGRSpatialReferenceH, const char *,
                                const char *, const char *);
OGRErr CPL_DLL OSRImportFromUrl(OGRSpatialReferenceH, const char *);
OGRErr CPL_DLL OSRImportFromCF1(OGRSpatialReferenceH,
                                CSLConstList papszKeyValues,
                                const char *pszUnits);

OGRErr CPL_DLL CPL_STDCALL OSRExportToWkt(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRExportToWktEx(OGRSpatialReferenceH, char **ppszResult,
                                const char *const *papszOptions);
OGRErr CPL_DLL CPL_STDCALL OSRExportToPrettyWkt(OGRSpatialReferenceH, char **,
                                                int);
OGRErr CPL_DLL OSRExportToPROJJSON(OGRSpatialReferenceH hSRS, char **ppszReturn,
                                   const char *const *papszOptions);
OGRErr CPL_DLL CPL_STDCALL OSRExportToProj4(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRExportToPCI(OGRSpatialReferenceH, char **, char **,
                              double **);
OGRErr CPL_DLL OSRExportToUSGS(OGRSpatialReferenceH, long *, long *, double **,
                               long *);
OGRErr CPL_DLL OSRExportToXML(OGRSpatialReferenceH, char **, const char *);
OGRErr CPL_DLL OSRExportToPanorama(OGRSpatialReferenceH, long *, long *, long *,
                                   long *, double *);
OGRErr CPL_DLL OSRExportToMICoordSys(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRExportToERM(OGRSpatialReferenceH, char *, char *, char *);
OGRErr CPL_DLL OSRExportToCF1(OGRSpatialReferenceH, char **ppszGridMappingName,
                              char ***ppapszKeyValues, char **ppszUnits,
                              CSLConstList papszOptions);

OGRErr CPL_DLL OSRMorphToESRI(OGRSpatialReferenceH);
OGRErr CPL_DLL OSRMorphFromESRI(OGRSpatialReferenceH);

OGRErr CPL_DLL OSRStripVertical(OGRSpatialReferenceH);

OGRSpatialReferenceH CPL_DLL OSRConvertToOtherProjection(
    OGRSpatialReferenceH hSRS, const char *pszTargetProjection,
    const char *const *papszOptions);

const char CPL_DLL *OSRGetName(OGRSpatialReferenceH hSRS);

OGRErr CPL_DLL CPL_STDCALL OSRSetAttrValue(OGRSpatialReferenceH hSRS,
                                           const char *pszNodePath,
                                           const char *pszNewNodeValue);
const char CPL_DLL *CPL_STDCALL OSRGetAttrValue(OGRSpatialReferenceH hSRS,
                                                const char *pszName,
                                                int iChild /* = 0 */);

OGRErr CPL_DLL OSRSetAngularUnits(OGRSpatialReferenceH, const char *, double);
double CPL_DLL OSRGetAngularUnits(OGRSpatialReferenceH, char **);
OGRErr CPL_DLL OSRSetLinearUnits(OGRSpatialReferenceH, const char *, double);
OGRErr CPL_DLL OSRSetTargetLinearUnits(OGRSpatialReferenceH, const char *,
                                       const char *, double);
OGRErr CPL_DLL OSRSetLinearUnitsAndUpdateParameters(OGRSpatialReferenceH,
                                                    const char *, double);
double CPL_DLL OSRGetLinearUnits(OGRSpatialReferenceH, char **);
double CPL_DLL OSRGetTargetLinearUnits(OGRSpatialReferenceH, const char *,
                                       char **);

double CPL_DLL OSRGetPrimeMeridian(OGRSpatialReferenceH, char **);

int CPL_DLL OSRIsGeographic(OGRSpatialReferenceH);
int CPL_DLL OSRIsDerivedGeographic(OGRSpatialReferenceH);
int CPL_DLL OSRIsLocal(OGRSpatialReferenceH);
int CPL_DLL OSRIsProjected(OGRSpatialReferenceH);
int CPL_DLL OSRIsDerivedProjected(OGRSpatialReferenceH);
int CPL_DLL OSRIsCompound(OGRSpatialReferenceH);
int CPL_DLL OSRIsGeocentric(OGRSpatialReferenceH);
int CPL_DLL OSRIsVertical(OGRSpatialReferenceH);
int CPL_DLL OSRIsDynamic(OGRSpatialReferenceH);
int CPL_DLL OSRHasPointMotionOperation(OGRSpatialReferenceH);
int CPL_DLL OSRIsSameGeogCS(OGRSpatialReferenceH, OGRSpatialReferenceH);
int CPL_DLL OSRIsSameVertCS(OGRSpatialReferenceH, OGRSpatialReferenceH);
int CPL_DLL OSRIsSame(OGRSpatialReferenceH, OGRSpatialReferenceH);
int CPL_DLL OSRIsSameEx(OGRSpatialReferenceH, OGRSpatialReferenceH,
                        const char *const *papszOptions);

void CPL_DLL OSRSetCoordinateEpoch(OGRSpatialReferenceH hSRS,
                                   double dfCoordinateEpoch);
double CPL_DLL OSRGetCoordinateEpoch(OGRSpatialReferenceH hSRS);

OGRErr CPL_DLL OSRSetLocalCS(OGRSpatialReferenceH hSRS, const char *pszName);
OGRErr CPL_DLL OSRSetProjCS(OGRSpatialReferenceH hSRS, const char *pszName);
OGRErr CPL_DLL OSRSetGeocCS(OGRSpatialReferenceH hSRS, const char *pszName);
OGRErr CPL_DLL OSRSetWellKnownGeogCS(OGRSpatialReferenceH hSRS,
                                     const char *pszName);
OGRErr CPL_DLL CPL_STDCALL OSRSetFromUserInput(OGRSpatialReferenceH hSRS,
                                               const char *);
OGRErr CPL_DLL OSRSetFromUserInputEx(OGRSpatialReferenceH hSRS, const char *,
                                     CSLConstList papszOptions);
OGRErr CPL_DLL OSRCopyGeogCSFrom(OGRSpatialReferenceH hSRS,
                                 const OGRSpatialReferenceH hSrcSRS);
OGRErr CPL_DLL OSRSetTOWGS84(OGRSpatialReferenceH hSRS, double, double, double,
                             double, double, double, double);
OGRErr CPL_DLL OSRGetTOWGS84(OGRSpatialReferenceH hSRS, double *, int);
OGRErr CPL_DLL OSRAddGuessedTOWGS84(OGRSpatialReferenceH hSRS);

OGRErr CPL_DLL OSRSetCompoundCS(OGRSpatialReferenceH hSRS, const char *pszName,
                                OGRSpatialReferenceH hHorizSRS,
                                OGRSpatialReferenceH hVertSRS);
OGRErr CPL_DLL OSRPromoteTo3D(OGRSpatialReferenceH hSRS, const char *pszName);
OGRErr CPL_DLL OSRDemoteTo2D(OGRSpatialReferenceH hSRS, const char *pszName);

OGRErr CPL_DLL OSRSetGeogCS(OGRSpatialReferenceH hSRS, const char *pszGeogName,
                            const char *pszDatumName,
                            const char *pszEllipsoidName, double dfSemiMajor,
                            double dfInvFlattening,
                            const char *pszPMName /* = NULL */,
                            double dfPMOffset /* = 0.0 */,
                            const char *pszUnits /* = NULL */,
                            double dfConvertToRadians /* = 0.0 */);

OGRErr CPL_DLL OSRSetVertCS(OGRSpatialReferenceH hSRS,
                            const char *pszVertCSName,
                            const char *pszVertDatumName, int nVertDatumType);

double CPL_DLL OSRGetSemiMajor(OGRSpatialReferenceH, OGRErr * /* = NULL */);
double CPL_DLL OSRGetSemiMinor(OGRSpatialReferenceH, OGRErr * /* = NULL */);
double CPL_DLL OSRGetInvFlattening(OGRSpatialReferenceH, OGRErr * /*=NULL*/);

OGRErr CPL_DLL OSRSetAuthority(OGRSpatialReferenceH hSRS,
                               const char *pszTargetKey,
                               const char *pszAuthority, int nCode);
const char CPL_DLL *OSRGetAuthorityCode(OGRSpatialReferenceH hSRS,
                                        const char *pszTargetKey);
const char CPL_DLL *OSRGetAuthorityName(OGRSpatialReferenceH hSRS,
                                        const char *pszTargetKey);

int CPL_DLL OSRGetAreaOfUse(OGRSpatialReferenceH hSRS,
                            double *pdfWestLongitudeDeg,
                            double *pdfSouthLatitudeDeg,
                            double *pdfEastLongitudeDeg,
                            double *pdfNorthLatitudeDeg,
                            const char **ppszAreaName);

OGRErr CPL_DLL OSRSetProjection(OGRSpatialReferenceH, const char *);
OGRErr CPL_DLL OSRSetProjParm(OGRSpatialReferenceH, const char *, double);
double CPL_DLL OSRGetProjParm(OGRSpatialReferenceH hSRS,
                              const char *pszParamName,
                              double dfDefault /* = 0.0 */,
                              OGRErr * /* = NULL */);
OGRErr CPL_DLL OSRSetNormProjParm(OGRSpatialReferenceH, const char *, double);
double CPL_DLL OSRGetNormProjParm(OGRSpatialReferenceH hSRS,
                                  const char *pszParamName,
                                  double dfDefault /* = 0.0 */,
                                  OGRErr * /* = NULL */);

OGRErr CPL_DLL OSRSetUTM(OGRSpatialReferenceH hSRS, int nZone, int bNorth);
int CPL_DLL OSRGetUTMZone(OGRSpatialReferenceH hSRS, int *pbNorth);
OGRErr CPL_DLL OSRSetStatePlane(OGRSpatialReferenceH hSRS, int nZone,
                                int bNAD83);
OGRErr CPL_DLL OSRSetStatePlaneWithUnits(OGRSpatialReferenceH hSRS, int nZone,
                                         int bNAD83,
                                         const char *pszOverrideUnitName,
                                         double dfOverrideUnit);
OGRErr CPL_DLL OSRAutoIdentifyEPSG(OGRSpatialReferenceH hSRS);

OGRSpatialReferenceH CPL_DLL *OSRFindMatches(OGRSpatialReferenceH hSRS,
                                             char **papszOptions,
                                             int *pnEntries,
                                             int **ppanMatchConfidence);
void CPL_DLL OSRFreeSRSArray(OGRSpatialReferenceH *pahSRS);

int CPL_DLL OSREPSGTreatsAsLatLong(OGRSpatialReferenceH hSRS);
int CPL_DLL OSREPSGTreatsAsNorthingEasting(OGRSpatialReferenceH hSRS);
const char CPL_DLL *OSRGetAxis(OGRSpatialReferenceH hSRS,
                               const char *pszTargetKey, int iAxis,
                               OGRAxisOrientation *peOrientation);
int CPL_DLL OSRGetAxesCount(OGRSpatialReferenceH hSRS);
OGRErr CPL_DLL OSRSetAxes(OGRSpatialReferenceH hSRS, const char *pszTargetKey,
                          const char *pszXAxisName,
                          OGRAxisOrientation eXAxisOrientation,
                          const char *pszYAxisName,
                          OGRAxisOrientation eYAxisOrientation);

/** Data axis to CRS axis mapping strategy. */
typedef enum
{
    OAMS_TRADITIONAL_GIS_ORDER, /**< Traditional GIS order */
    OAMS_AUTHORITY_COMPLIANT, /**< Compliant with the order mandated by the CRS
                                 authority */
    OAMS_CUSTOM               /**< Custom */
} OSRAxisMappingStrategy;

OSRAxisMappingStrategy CPL_DLL
OSRGetAxisMappingStrategy(OGRSpatialReferenceH hSRS);

void CPL_DLL OSRSetAxisMappingStrategy(OGRSpatialReferenceH hSRS,
                                       OSRAxisMappingStrategy strategy);

const int CPL_DLL *OSRGetDataAxisToSRSAxisMapping(OGRSpatialReferenceH hSRS,
                                                  int *pnCount);

OGRErr CPL_DLL OSRSetDataAxisToSRSAxisMapping(OGRSpatialReferenceH hSRS,
                                              int nMappingSize,
                                              const int *panMapping);

/** Albers Conic Equal Area */
OGRErr CPL_DLL OSRSetACEA(OGRSpatialReferenceH hSRS, double dfStdP1,
                          double dfStdP2, double dfCenterLat,
                          double dfCenterLong, double dfFalseEasting,
                          double dfFalseNorthing);

/** Azimuthal Equidistant */
OGRErr CPL_DLL OSRSetAE(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfFalseEasting,
                        double dfFalseNorthing);

/** Bonne */
OGRErr CPL_DLL OSRSetBonne(OGRSpatialReferenceH hSRS, double dfStandardParallel,
                           double dfCentralMeridian, double dfFalseEasting,
                           double dfFalseNorthing);

/** Cylindrical Equal Area */
OGRErr CPL_DLL OSRSetCEA(OGRSpatialReferenceH hSRS, double dfStdP1,
                         double dfCentralMeridian, double dfFalseEasting,
                         double dfFalseNorthing);

/** Cassini-Soldner */
OGRErr CPL_DLL OSRSetCS(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfFalseEasting,
                        double dfFalseNorthing);

/** Equidistant Conic */
OGRErr CPL_DLL OSRSetEC(OGRSpatialReferenceH hSRS, double dfStdP1,
                        double dfStdP2, double dfCenterLat, double dfCenterLong,
                        double dfFalseEasting, double dfFalseNorthing);

/** Eckert I-VI */
OGRErr CPL_DLL OSRSetEckert(OGRSpatialReferenceH hSRS, int nVariation,
                            double dfCentralMeridian, double dfFalseEasting,
                            double dfFalseNorthing);

/** Eckert IV */
OGRErr CPL_DLL OSRSetEckertIV(OGRSpatialReferenceH hSRS,
                              double dfCentralMeridian, double dfFalseEasting,
                              double dfFalseNorthing);

/** Eckert VI */
OGRErr CPL_DLL OSRSetEckertVI(OGRSpatialReferenceH hSRS,
                              double dfCentralMeridian, double dfFalseEasting,
                              double dfFalseNorthing);

/** Equirectangular */
OGRErr CPL_DLL OSRSetEquirectangular(OGRSpatialReferenceH hSRS,
                                     double dfCenterLat, double dfCenterLong,
                                     double dfFalseEasting,
                                     double dfFalseNorthing);

/** Equirectangular generalized form */
OGRErr CPL_DLL OSRSetEquirectangular2(OGRSpatialReferenceH hSRS,
                                      double dfCenterLat, double dfCenterLong,
                                      double dfPseudoStdParallel1,
                                      double dfFalseEasting,
                                      double dfFalseNorthing);

/** Gall Stereograpic */
OGRErr CPL_DLL OSRSetGS(OGRSpatialReferenceH hSRS, double dfCentralMeridian,
                        double dfFalseEasting, double dfFalseNorthing);

/** Goode Homolosine */
OGRErr CPL_DLL OSRSetGH(OGRSpatialReferenceH hSRS, double dfCentralMeridian,
                        double dfFalseEasting, double dfFalseNorthing);

/** Interrupted Goode Homolosine */
OGRErr CPL_DLL OSRSetIGH(OGRSpatialReferenceH hSRS);

/** GEOS - Geostationary Satellite View */
OGRErr CPL_DLL OSRSetGEOS(OGRSpatialReferenceH hSRS, double dfCentralMeridian,
                          double dfSatelliteHeight, double dfFalseEasting,
                          double dfFalseNorthing);

/** Gauss Schreiber Transverse Mercator */
OGRErr CPL_DLL OSRSetGaussSchreiberTMercator(
    OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong,
    double dfScale, double dfFalseEasting, double dfFalseNorthing);
/** Gnomonic */
OGRErr CPL_DLL OSRSetGnomonic(OGRSpatialReferenceH hSRS, double dfCenterLat,
                              double dfCenterLong, double dfFalseEasting,
                              double dfFalseNorthing);

#ifdef undef
/** Oblique Mercator (aka HOM (variant B) */
OGRErr CPL_DLL OSRSetOM(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfAzimuth,
                        double dfRectToSkew, double dfScale,
                        double dfFalseEasting, double dfFalseNorthing);
#endif

/** Hotine Oblique Mercator using azimuth angle */
OGRErr CPL_DLL OSRSetHOM(OGRSpatialReferenceH hSRS, double dfCenterLat,
                         double dfCenterLong, double dfAzimuth,
                         double dfRectToSkew, double dfScale,
                         double dfFalseEasting, double dfFalseNorthing);

OGRErr CPL_DLL OSRSetHOMAC(OGRSpatialReferenceH hSRS, double dfCenterLat,
                           double dfCenterLong, double dfAzimuth,
                           double dfRectToSkew, double dfScale,
                           double dfFalseEasting, double dfFalseNorthing);

/** Hotine Oblique Mercator using two points on centerline */
OGRErr CPL_DLL OSRSetHOM2PNO(OGRSpatialReferenceH hSRS, double dfCenterLat,
                             double dfLat1, double dfLong1, double dfLat2,
                             double dfLong2, double dfScale,
                             double dfFalseEasting, double dfFalseNorthing);

/** International Map of the World Polyconic */
OGRErr CPL_DLL OSRSetIWMPolyconic(OGRSpatialReferenceH hSRS, double dfLat1,
                                  double dfLat2, double dfCenterLong,
                                  double dfFalseEasting,
                                  double dfFalseNorthing);

/** Krovak Oblique Conic Conformal */
OGRErr CPL_DLL OSRSetKrovak(OGRSpatialReferenceH hSRS, double dfCenterLat,
                            double dfCenterLong, double dfAzimuth,
                            double dfPseudoStdParallelLat, double dfScale,
                            double dfFalseEasting, double dfFalseNorthing);

/** Lambert Azimuthal Equal-Area */
OGRErr CPL_DLL OSRSetLAEA(OGRSpatialReferenceH hSRS, double dfCenterLat,
                          double dfCenterLong, double dfFalseEasting,
                          double dfFalseNorthing);

/** Lambert Conformal Conic */
OGRErr CPL_DLL OSRSetLCC(OGRSpatialReferenceH hSRS, double dfStdP1,
                         double dfStdP2, double dfCenterLat,
                         double dfCenterLong, double dfFalseEasting,
                         double dfFalseNorthing);

/** Lambert Conformal Conic 1SP */
OGRErr CPL_DLL OSRSetLCC1SP(OGRSpatialReferenceH hSRS, double dfCenterLat,
                            double dfCenterLong, double dfScale,
                            double dfFalseEasting, double dfFalseNorthing);

/** Lambert Conformal Conic (Belgium) */
OGRErr CPL_DLL OSRSetLCCB(OGRSpatialReferenceH hSRS, double dfStdP1,
                          double dfStdP2, double dfCenterLat,
                          double dfCenterLong, double dfFalseEasting,
                          double dfFalseNorthing);

/** Miller Cylindrical */
OGRErr CPL_DLL OSRSetMC(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfFalseEasting,
                        double dfFalseNorthing);

/** Mercator */
OGRErr CPL_DLL OSRSetMercator(OGRSpatialReferenceH hSRS, double dfCenterLat,
                              double dfCenterLong, double dfScale,
                              double dfFalseEasting, double dfFalseNorthing);

/** Mercator 2SP */
OGRErr CPL_DLL OSRSetMercator2SP(OGRSpatialReferenceH hSRS, double dfStdP1,
                                 double dfCenterLat, double dfCenterLong,
                                 double dfFalseEasting, double dfFalseNorthing);

/** Mollweide */
OGRErr CPL_DLL OSRSetMollweide(OGRSpatialReferenceH hSRS,
                               double dfCentralMeridian, double dfFalseEasting,
                               double dfFalseNorthing);

/** New Zealand Map Grid */
OGRErr CPL_DLL OSRSetNZMG(OGRSpatialReferenceH hSRS, double dfCenterLat,
                          double dfCenterLong, double dfFalseEasting,
                          double dfFalseNorthing);

/** Oblique Stereographic */
OGRErr CPL_DLL OSRSetOS(OGRSpatialReferenceH hSRS, double dfOriginLat,
                        double dfCMeridian, double dfScale,
                        double dfFalseEasting, double dfFalseNorthing);

/** Orthographic */
OGRErr CPL_DLL OSRSetOrthographic(OGRSpatialReferenceH hSRS, double dfCenterLat,
                                  double dfCenterLong, double dfFalseEasting,
                                  double dfFalseNorthing);

/** Polyconic */
OGRErr CPL_DLL OSRSetPolyconic(OGRSpatialReferenceH hSRS, double dfCenterLat,
                               double dfCenterLong, double dfFalseEasting,
                               double dfFalseNorthing);

/** Polar Stereographic */
OGRErr CPL_DLL OSRSetPS(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfScale,
                        double dfFalseEasting, double dfFalseNorthing);

/** Robinson */
OGRErr CPL_DLL OSRSetRobinson(OGRSpatialReferenceH hSRS, double dfCenterLong,
                              double dfFalseEasting, double dfFalseNorthing);

/** Sinusoidal */
OGRErr CPL_DLL OSRSetSinusoidal(OGRSpatialReferenceH hSRS, double dfCenterLong,
                                double dfFalseEasting, double dfFalseNorthing);

/** Stereographic */
OGRErr CPL_DLL OSRSetStereographic(OGRSpatialReferenceH hSRS,
                                   double dfCenterLat, double dfCenterLong,
                                   double dfScale, double dfFalseEasting,
                                   double dfFalseNorthing);

/** Swiss Oblique Cylindrical */
OGRErr CPL_DLL OSRSetSOC(OGRSpatialReferenceH hSRS, double dfLatitudeOfOrigin,
                         double dfCentralMeridian, double dfFalseEasting,
                         double dfFalseNorthing);

/** Transverse Mercator
 *
 * Special processing available for Transverse Mercator with GDAL &gt;= 1.10 and
 * PROJ &gt;= 4.8 : see OGRSpatialReference::exportToProj4().
 */

OGRErr CPL_DLL OSRSetTM(OGRSpatialReferenceH hSRS, double dfCenterLat,
                        double dfCenterLong, double dfScale,
                        double dfFalseEasting, double dfFalseNorthing);

/** Transverse Mercator variant */
OGRErr CPL_DLL OSRSetTMVariant(OGRSpatialReferenceH hSRS,
                               const char *pszVariantName, double dfCenterLat,
                               double dfCenterLong, double dfScale,
                               double dfFalseEasting, double dfFalseNorthing);

/** Tunesia Mining Grid  */
OGRErr CPL_DLL OSRSetTMG(OGRSpatialReferenceH hSRS, double dfCenterLat,
                         double dfCenterLong, double dfFalseEasting,
                         double dfFalseNorthing);

/** Transverse Mercator (South Oriented) */
OGRErr CPL_DLL OSRSetTMSO(OGRSpatialReferenceH hSRS, double dfCenterLat,
                          double dfCenterLong, double dfScale,
                          double dfFalseEasting, double dfFalseNorthing);

/** TPED (Two Point Equi Distant) */
OGRErr CPL_DLL OSRSetTPED(OGRSpatialReferenceH hSRS, double dfLat1,
                          double dfLong1, double dfLat2, double dfLong2,
                          double dfFalseEasting, double dfFalseNorthing);

/** VanDerGrinten */
OGRErr CPL_DLL OSRSetVDG(OGRSpatialReferenceH hSRS, double dfCenterLong,
                         double dfFalseEasting, double dfFalseNorthing);

/** Wagner I -- VII */
OGRErr CPL_DLL OSRSetWagner(OGRSpatialReferenceH hSRS, int nVariation,
                            double dfCenterLat, double dfFalseEasting,
                            double dfFalseNorthing);

/** Quadrilateralized Spherical Cube */
OGRErr CPL_DLL OSRSetQSC(OGRSpatialReferenceH hSRS, double dfCenterLat,
                         double dfCenterLong);

/** Spherical, Cross-track, Height */
OGRErr CPL_DLL OSRSetSCH(OGRSpatialReferenceH hSRS, double dfPegLat,
                         double dfPegLong, double dfPegHeading,
                         double dfPegHgt);

/** Vertical Perspective / Near-sided Perspective */
OGRErr CPL_DLL OSRSetVerticalPerspective(
    OGRSpatialReferenceH hSRS, double dfTopoOriginLat, double dfTopoOriginLon,
    double dfTopoOriginHeight, double dfViewPointHeight, double dfFalseEasting,
    double dfFalseNorthing);

double CPL_DLL OSRCalcInvFlattening(double dfSemiMajor, double dfSemiMinor);
double CPL_DLL OSRCalcSemiMinorFromInvFlattening(double dfSemiMajor,
                                                 double dfInvFlattening);

void CPL_DLL OSRCleanup(void);

/** \brief Type of Coordinate Reference System (CRS). */
typedef enum
{
    /** Geographic 2D CRS */
    OSR_CRS_TYPE_GEOGRAPHIC_2D,
    /** Geographic 3D CRS */
    OSR_CRS_TYPE_GEOGRAPHIC_3D,
    /** Geocentric CRS */
    OSR_CRS_TYPE_GEOCENTRIC,
    /** Projected CRS */
    OSR_CRS_TYPE_PROJECTED,
    /** Vertical CRS */
    OSR_CRS_TYPE_VERTICAL,
    /** Compound CRS */
    OSR_CRS_TYPE_COMPOUND,
    /** Other */
    OSR_CRS_TYPE_OTHER,
} OSRCRSType;

/** \brief Structure given overall description of a CRS.
 *
 * This structure may grow over time, and should not be directly allocated by
 * client code.
 */
typedef struct
{
    /** Authority name. */
    char *pszAuthName;
    /** Object code. */
    char *pszCode;
    /** Object name. */
    char *pszName;
    /** Object type. */
    OSRCRSType eType;
    /** Whether the object is deprecated */
    int bDeprecated;
    /** Whereas the west_lon_degree, south_lat_degree, east_lon_degree and
     * north_lat_degree fields are valid. */
    int bBboxValid;
    /** Western-most longitude of the area of use, in degrees. */
    double dfWestLongitudeDeg;
    /** Southern-most latitude of the area of use, in degrees. */
    double dfSouthLatitudeDeg;
    /** Eastern-most longitude of the area of use, in degrees. */
    double dfEastLongitudeDeg;
    /** Northern-most latitude of the area of use, in degrees. */
    double dfNorthLatitudeDeg;
    /** Name of the area of use. */
    char *pszAreaName;
    /** Name of the projection method for a projected CRS. Might be NULL even
     *for projected CRS in some cases. */
    char *pszProjectionMethod;
} OSRCRSInfo;

/** \brief Structure to describe optional parameters to
 * OSRGetCRSInfoListFromDatabase()
 *
 * Unused for now.
 */
typedef struct OSRCRSListParameters OSRCRSListParameters;

OSRCRSInfo CPL_DLL **
OSRGetCRSInfoListFromDatabase(const char *pszAuthName,
                              const OSRCRSListParameters *params,
                              int *pnOutResultCount);

void CPL_DLL OSRDestroyCRSInfoList(OSRCRSInfo **list);

char CPL_DLL **OSRGetAuthorityListFromDatabase(void);

/* -------------------------------------------------------------------- */
/*      OGRCoordinateTransform C API.                                   */
/* -------------------------------------------------------------------- */
OGRCoordinateTransformationH CPL_DLL CPL_STDCALL OCTNewCoordinateTransformation(
    OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS);

/** Coordinate transformation options. */
typedef struct OGRCoordinateTransformationOptions
    *OGRCoordinateTransformationOptionsH;

OGRCoordinateTransformationOptionsH CPL_DLL
OCTNewCoordinateTransformationOptions(void);

int CPL_DLL OCTCoordinateTransformationOptionsSetOperation(
    OGRCoordinateTransformationOptionsH hOptions, const char *pszCO,
    int bReverseCO);

int CPL_DLL OCTCoordinateTransformationOptionsSetAreaOfInterest(
    OGRCoordinateTransformationOptionsH hOptions, double dfWestLongitudeDeg,
    double dfSouthLatitudeDeg, double dfEastLongitudeDeg,
    double dfNorthLatitudeDeg);

int CPL_DLL OCTCoordinateTransformationOptionsSetDesiredAccuracy(
    OGRCoordinateTransformationOptionsH hOptions, double dfAccuracy);

int CPL_DLL OCTCoordinateTransformationOptionsSetBallparkAllowed(
    OGRCoordinateTransformationOptionsH hOptions, int bAllowBallpark);

int CPL_DLL OCTCoordinateTransformationOptionsSetOnlyBest(
    OGRCoordinateTransformationOptionsH hOptions, bool bOnlyBest);

void CPL_DLL OCTDestroyCoordinateTransformationOptions(
    OGRCoordinateTransformationOptionsH);

OGRCoordinateTransformationH CPL_DLL OCTNewCoordinateTransformationEx(
    OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS,
    OGRCoordinateTransformationOptionsH hOptions);

OGRCoordinateTransformationH CPL_DLL
OCTClone(OGRCoordinateTransformationH hTransform);
OGRSpatialReferenceH CPL_DLL
OCTGetSourceCS(OGRCoordinateTransformationH hTransform);
OGRSpatialReferenceH CPL_DLL
OCTGetTargetCS(OGRCoordinateTransformationH hTransform);
OGRCoordinateTransformationH CPL_DLL
OCTGetInverse(OGRCoordinateTransformationH hTransform);

void CPL_DLL CPL_STDCALL
    OCTDestroyCoordinateTransformation(OGRCoordinateTransformationH);

int CPL_DLL CPL_STDCALL OCTTransform(OGRCoordinateTransformationH hCT,
                                     int nCount, double *x, double *y,
                                     double *z);

int CPL_DLL CPL_STDCALL OCTTransformEx(OGRCoordinateTransformationH hCT,
                                       int nCount, double *x, double *y,
                                       double *z, int *pabSuccess);

int CPL_DLL OCTTransform4D(OGRCoordinateTransformationH hCT, int nCount,
                           double *x, double *y, double *z, double *t,
                           int *pabSuccess);

int CPL_DLL OCTTransform4DWithErrorCodes(OGRCoordinateTransformationH hCT,
                                         int nCount, double *x, double *y,
                                         double *z, double *t,
                                         int *panErrorCodes);

int CPL_DLL CPL_STDCALL OCTTransformBounds(OGRCoordinateTransformationH hCT,
                                           const double xmin, const double ymin,
                                           const double xmax, const double ymax,
                                           double *out_xmin, double *out_ymin,
                                           double *out_xmax, double *out_ymax,
                                           const int densify_pts);

CPL_C_END

#endif /* ndef SWIG */

#endif /* ndef OGR_SRS_API_H_INCLUDED */