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# gdal_alg.h

Go to the documentation of this file.

    00001 /******************************************************************************
    00002  * $Id: gdal_alg.h 18227 2009-12-09 13:08:16Z chaitanya $
    00003  *
    00004  * Project:  GDAL Image Processing Algorithms
    00005  * Purpose:  Prototypes, and definitions for various GDAL based algorithms.
    00006  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00007  *
    00008  ******************************************************************************
    00009  * Copyright (c) 2001, Frank Warmerdam
    00010  *
    00011  * Permission is hereby granted, free of charge, to any person obtaining a
    00012  * copy of this software and associated documentation files (the "Software"),
    00013  * to deal in the Software without restriction, including without limitation
    00014  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
    00015  * and/or sell copies of the Software, and to permit persons to whom the
    00016  * Software is furnished to do so, subject to the following conditions:
    00017  *
    00018  * The above copyright notice and this permission notice shall be included
    00019  * in all copies or substantial portions of the Software.
    00020  *
    00021  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
    00022  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    00023  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
    00024  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    00025  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
    00026  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
    00027  * DEALINGS IN THE SOFTWARE.
    00028  ****************************************************************************/
    00029
    00030 #ifndef GDAL_ALG_H_INCLUDED
    00031 #define GDAL_ALG_H_INCLUDED
    00032
    00039 #ifndef DOXYGEN_SKIP
    00040 #include "gdal.h"
    00041 #include "cpl_minixml.h"
    00042 #include "ogr_api.h"
    00043 #endif
    00044
    00045 CPL_C_START
    00046
    00047 int CPL_DLL CPL_STDCALL GDALComputeMedianCutPCT( GDALRasterBandH hRed,
    00048                              GDALRasterBandH hGreen,
    00049                              GDALRasterBandH hBlue,
    00050                              int (*pfnIncludePixel)(int,int,void*),
    00051                              int nColors,
    00052                              GDALColorTableH hColorTable,
    00053                              GDALProgressFunc pfnProgress,
    00054                              void * pProgressArg );
    00055
    00056 int CPL_DLL CPL_STDCALL GDALDitherRGB2PCT( GDALRasterBandH hRed,
    00057                        GDALRasterBandH hGreen,
    00058                        GDALRasterBandH hBlue,
    00059                        GDALRasterBandH hTarget,
    00060                        GDALColorTableH hColorTable,
    00061                        GDALProgressFunc pfnProgress,
    00062                        void * pProgressArg );
    00063
    00064 int CPL_DLL CPL_STDCALL GDALChecksumImage( GDALRasterBandH hBand,
    00065                                int nXOff, int nYOff, int nXSize, int nYSize );
    00066
    00067 CPLErr CPL_DLL CPL_STDCALL
    00068 GDALComputeProximity( GDALRasterBandH hSrcBand,
    00069                       GDALRasterBandH hProximityBand,
    00070                       char **papszOptions,
    00071                       GDALProgressFunc pfnProgress,
    00072                       void * pProgressArg );
    00073
    00074 CPLErr CPL_DLL CPL_STDCALL
    00075 GDALFillNodata( GDALRasterBandH hTargetBand,
    00076                 GDALRasterBandH hMaskBand,
    00077                 double dfMaxSearchDist,
    00078                 int bDeprecatedOption,
    00079                 int nSmoothingIterations,
    00080                 char **papszOptions,
    00081                 GDALProgressFunc pfnProgress,
    00082                 void * pProgressArg );
    00083
    00084 CPLErr CPL_DLL CPL_STDCALL
    00085 GDALPolygonize( GDALRasterBandH hSrcBand,
    00086                 GDALRasterBandH hMaskBand,
    00087                 OGRLayerH hOutLayer, int iPixValField,
    00088                 char **papszOptions,
    00089                 GDALProgressFunc pfnProgress,
    00090                 void * pProgressArg );
    00091
    00092 CPLErr CPL_DLL CPL_STDCALL
    00093 GDALSieveFilter( GDALRasterBandH hSrcBand, GDALRasterBandH hMaskBand,
    00094                  GDALRasterBandH hDstBand,
    00095                  int nSizeThreshold, int nConnectedness,
    00096                  char **papszOptions,
    00097                  GDALProgressFunc pfnProgress,
    00098                  void * pProgressArg );
    00099
    00100 /*
    00101  * Warp Related.
    00102  */
    00103
    00104 typedef int
    00105 (*GDALTransformerFunc)( void *pTransformerArg,
    00106                         int bDstToSrc, int nPointCount,
    00107                         double *x, double *y, double *z, int *panSuccess );
    00108
    00109 typedef struct {
    00110     char szSignature[4];
    00111     const char *pszClassName;
    00112     GDALTransformerFunc pfnTransform;
    00113     void (*pfnCleanup)( void * );
    00114     CPLXMLNode *(*pfnSerialize)( void * );
    00115 } GDALTransformerInfo;
    00116
    00117 void CPL_DLL GDALDestroyTransformer( void *pTransformerArg );
    00118 int  CPL_DLL GDALUseTransformer( void *pTranformerArg,
    00119                                  int bDstToSrc, int nPointCount,
    00120                                  double *x, double *y, double *z,
    00121                                  int *panSuccess );
    00122
    00123 /* High level transformer for going from image coordinates on one file
    00124    to image coordiantes on another, potentially doing reprojection,
    00125    utilizing GCPs or using the geotransform. */
    00126
    00127 void CPL_DLL *
    00128 GDALCreateGenImgProjTransformer( GDALDatasetH hSrcDS, const char *pszSrcWKT,
    00129                                  GDALDatasetH hDstDS, const char *pszDstWKT,
    00130                                  int bGCPUseOK, double dfGCPErrorThreshold,
    00131                                  int nOrder );
    00132 void CPL_DLL *
    00133 GDALCreateGenImgProjTransformer2( GDALDatasetH hSrcDS, GDALDatasetH hDstDS,
    00134                                   char **papszOptions );
    00135 void CPL_DLL *
    00136 GDALCreateGenImgProjTransformer3( const char *pszSrcWKT,
    00137                                   const double *padfSrcGeoTransform,
    00138                                   const char *pszDstWKT,
    00139                                   const double *padfDstGeoTransform );
    00140 void CPL_DLL GDALSetGenImgProjTransformerDstGeoTransform( void *,
    00141                                                           const double * );
    00142 void CPL_DLL GDALDestroyGenImgProjTransformer( void * );
    00143 int CPL_DLL GDALGenImgProjTransform(
    00144     void *pTransformArg, int bDstToSrc, int nPointCount,
    00145     double *x, double *y, double *z, int *panSuccess );
    00146
    00147 /* Geo to geo reprojection transformer. */
    00148 void CPL_DLL *
    00149 GDALCreateReprojectionTransformer( const char *pszSrcWKT,
    00150                                    const char *pszDstWKT );
    00151 void CPL_DLL GDALDestroyReprojectionTransformer( void * );
    00152 int CPL_DLL GDALReprojectionTransform(
    00153     void *pTransformArg, int bDstToSrc, int nPointCount,
    00154     double *x, double *y, double *z, int *panSuccess );
    00155
    00156 /* GCP based transformer ... forward is to georef coordinates */
    00157 void CPL_DLL *
    00158 GDALCreateGCPTransformer( int nGCPCount, const GDAL_GCP *pasGCPList,
    00159                           int nReqOrder, int bReversed );
    00160 void CPL_DLL GDALDestroyGCPTransformer( void *pTransformArg );
    00161 int CPL_DLL GDALGCPTransform(
    00162     void *pTransformArg, int bDstToSrc, int nPointCount,
    00163     double *x, double *y, double *z, int *panSuccess );
    00164
    00165 /* Thin Plate Spine transformer ... forward is to georef coordinates */
    00166
    00167 void CPL_DLL *
    00168 GDALCreateTPSTransformer( int nGCPCount, const GDAL_GCP *pasGCPList,
    00169                           int bReversed );
    00170 void CPL_DLL GDALDestroyTPSTransformer( void *pTransformArg );
    00171 int CPL_DLL GDALTPSTransform(
    00172     void *pTransformArg, int bDstToSrc, int nPointCount,
    00173     double *x, double *y, double *z, int *panSuccess );
    00174
    00175 /* RPC based transformer ... src is pixel/line/elev, dst is long/lat/elev */
    00176
    00177 void CPL_DLL *
    00178 GDALCreateRPCTransformer( GDALRPCInfo *psRPC, int bReversed,
    00179                           double dfPixErrThreshold,
    00180                           char **papszOptions );
    00181 void CPL_DLL GDALDestroyRPCTransformer( void *pTransformArg );
    00182 int CPL_DLL GDALRPCTransform(
    00183     void *pTransformArg, int bDstToSrc, int nPointCount,
    00184     double *x, double *y, double *z, int *panSuccess );
    00185
    00186 /* Geolocation transformer */
    00187
    00188 void CPL_DLL *
    00189 GDALCreateGeoLocTransformer( GDALDatasetH hBaseDS,
    00190                              char **papszGeolocationInfo,
    00191                              int bReversed );
    00192 void CPL_DLL GDALDestroyGeoLocTransformer( void *pTransformArg );
    00193 int CPL_DLL GDALGeoLocTransform(
    00194     void *pTransformArg, int bDstToSrc, int nPointCount,
    00195     double *x, double *y, double *z, int *panSuccess );
    00196
    00197 /* Approximate transformer */
    00198 void CPL_DLL *
    00199 GDALCreateApproxTransformer( GDALTransformerFunc pfnRawTransformer,
    00200                              void *pRawTransformerArg, double dfMaxError );
    00201 void CPL_DLL GDALApproxTransformerOwnsSubtransformer( void *pCBData,
    00202                                                       int bOwnFlag );
    00203 void CPL_DLL GDALDestroyApproxTransformer( void *pApproxArg );
    00204 int  CPL_DLL GDALApproxTransform(
    00205     void *pTransformArg, int bDstToSrc, int nPointCount,
    00206     double *x, double *y, double *z, int *panSuccess );
    00207
    00208
    00209
    00210
    00211 int CPL_DLL CPL_STDCALL
    00212 GDALSimpleImageWarp( GDALDatasetH hSrcDS,
    00213                      GDALDatasetH hDstDS,
    00214                      int nBandCount, int *panBandList,
    00215                      GDALTransformerFunc pfnTransform,
    00216                      void *pTransformArg,
    00217                      GDALProgressFunc pfnProgress,
    00218                      void *pProgressArg,
    00219                      char **papszWarpOptions );
    00220
    00221 CPLErr CPL_DLL CPL_STDCALL
    00222 GDALSuggestedWarpOutput( GDALDatasetH hSrcDS,
    00223                          GDALTransformerFunc pfnTransformer,
    00224                          void *pTransformArg,
    00225                          double *padfGeoTransformOut,
    00226                          int *pnPixels, int *pnLines );
    00227 CPLErr CPL_DLL CPL_STDCALL
    00228 GDALSuggestedWarpOutput2( GDALDatasetH hSrcDS,
    00229                           GDALTransformerFunc pfnTransformer,
    00230                           void *pTransformArg,
    00231                           double *padfGeoTransformOut,
    00232                           int *pnPixels, int *pnLines,
    00233                           double *padfExtents,
    00234                           int nOptions );
    00235
    00236 CPLXMLNode CPL_DLL *
    00237 GDALSerializeTransformer( GDALTransformerFunc pfnFunc, void *pTransformArg );
    00238 CPLErr CPL_DLL GDALDeserializeTransformer( CPLXMLNode *psTree,
    00239                                            GDALTransformerFunc *ppfnFunc,
    00240                                            void **ppTransformArg );
    00241
    00242
    00243 /* -------------------------------------------------------------------- */
    00244 /*      Contour Line Generation                                         */
    00245 /* -------------------------------------------------------------------- */
    00246
    00247 typedef CPLErr (*GDALContourWriter)( double dfLevel, int nPoints,
    00248                                      double *padfX, double *padfY, void * );
    00249
    00250 typedef void *GDALContourGeneratorH;
    00251
    00252 GDALContourGeneratorH CPL_DLL
    00253 GDAL_CG_Create( int nWidth, int nHeight,
    00254                 int bNoDataSet, double dfNoDataValue,
    00255                 double dfContourInterval, double dfContourBase,
    00256                 GDALContourWriter pfnWriter, void *pCBData );
    00257 CPLErr CPL_DLL GDAL_CG_FeedLine( GDALContourGeneratorH hCG,
    00258                                  double *padfScanline );
    00259 void CPL_DLL GDAL_CG_Destroy( GDALContourGeneratorH hCG );
    00260
    00261 typedef struct
    00262 {
    00263     void   *hLayer;
    00264
    00265     double adfGeoTransform[6];
    00266
    00267     int    nElevField;
    00268     int    nIDField;
    00269     int    nNextID;
    00270 } OGRContourWriterInfo;
    00271
    00272 CPLErr CPL_DLL
    00273 OGRContourWriter( double, int, double *, double *, void *pInfo );
    00274
    00275 CPLErr CPL_DLL
    00276 GDALContourGenerate( GDALRasterBandH hBand,
    00277                             double dfContourInterval, double dfContourBase,
    00278                             int nFixedLevelCount, double *padfFixedLevels,
    00279                             int bUseNoData, double dfNoDataValue,
    00280                             void *hLayer, int iIDField, int iElevField,
    00281                             GDALProgressFunc pfnProgress, void *pProgressArg );
    00282
    00283 /************************************************************************/
    00284 /*      Rasterizer API - geometries burned into GDAL raster.            */
    00285 /************************************************************************/
    00286
    00287 CPLErr CPL_DLL
    00288 GDALRasterizeGeometries( GDALDatasetH hDS,
    00289                          int nBandCount, int *panBandList,
    00290                          int nGeomCount, OGRGeometryH *pahGeometries,
    00291                          GDALTransformerFunc pfnTransformer,
    00292                          void *pTransformArg,
    00293                          double *padfGeomBurnValue,
    00294                          char **papszOptions,
    00295                          GDALProgressFunc pfnProgress,
    00296                          void * pProgressArg );
    00297 CPLErr CPL_DLL
    00298 GDALRasterizeLayers( GDALDatasetH hDS,
    00299                      int nBandCount, int *panBandList,
    00300                      int nLayerCount, OGRLayerH *pahLayers,
    00301                      GDALTransformerFunc pfnTransformer,
    00302                      void *pTransformArg,
    00303                      double *padfLayerBurnValues,
    00304                      char **papszOptions,
    00305                      GDALProgressFunc pfnProgress,
    00306                      void *pProgressArg );
    00307
    00308 CPLErr CPL_DLL
    00309 GDALRasterizeLayersBuf( void *pData, int nBufXSize, int nBufYSize,
    00310                         GDALDataType eBufType, int nPixelSpace, int nLineSpace,
    00311                         int nLayerCount, OGRLayerH *pahLayers,
    00312                         const char *pszDstProjection,
    00313                         double *padfDstGeoTransform,
    00314                         GDALTransformerFunc pfnTransformer,
    00315                         void *pTransformArg, double dfBurnValue,
    00316                         char **papszOptions, GDALProgressFunc pfnProgress,
    00317                         void *pProgressArg );
    00318
    00319
    00320 /************************************************************************/
    00321 /*  Gridding interface.                                                 */
    00322 /************************************************************************/
    00323
    00325 typedef enum {    GGA_InverseDistanceToAPower = 1,                 GGA_MovingAverage = 2,               GGA_NearestNeighbor = 3,    GGA_MetricMinimum = 4,    GGA_MetricMaximum = 5,       GGA_MetricRange = 6, GGA_MetricCount = 7, GGA_MetricAverageDistance = 8,
    00335                                         GGA_MetricAverageDistancePts = 9
    00336 } GDALGridAlgorithm;
    00337
    00339 typedef struct
    00340 {
    00342     double  dfPower;
    00344     double  dfSmoothing;
    00346     double  dfAnisotropyRatio;
    00348     double  dfAnisotropyAngle;
    00350     double  dfRadius1;
    00352     double  dfRadius2;
    00357     double  dfAngle;
    00364     GUInt32 nMaxPoints;
    00370     GUInt32 nMinPoints;
    00372     double  dfNoDataValue;
    00373 } GDALGridInverseDistanceToAPowerOptions;
    00374
    00376 typedef struct
    00377 {
    00379     double  dfRadius1;
    00381     double  dfRadius2;
    00386     double  dfAngle;
    00392     GUInt32 nMinPoints;
    00394     double  dfNoDataValue;
    00395 } GDALGridMovingAverageOptions;
    00396
    00398 typedef struct
    00399 {
    00401     double  dfRadius1;
    00403     double  dfRadius2;
    00408     double  dfAngle;
    00410     double  dfNoDataValue;
    00411 } GDALGridNearestNeighborOptions;
    00412
    00414 typedef struct
    00415 {
    00417     double  dfRadius1;
    00419     double  dfRadius2;
    00424     double  dfAngle;
    00430     GUInt32 nMinPoints;
    00432     double  dfNoDataValue;
    00433 } GDALGridDataMetricsOptions;
    00434
    00435 CPLErr CPL_DLL
    00436 GDALGridCreate( GDALGridAlgorithm, const void *, GUInt32,
    00437                 const double *, const double *, const double *,
    00438                 double, double, double, double,
    00439                 GUInt32, GUInt32, GDALDataType, void *,
    00440                 GDALProgressFunc, void *);
    00441 CPL_C_END
    00442
    00443 #endif /* ndef GDAL_ALG_H_INCLUDED */

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