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# gdalwarper.h

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    00001 /******************************************************************************
    00002  * $Id: gdalwarper.h 20819 2010-10-13 15:59:44Z warmerdam $
    00003  *
    00004  * Project:  GDAL High Performance Warper
    00005  * Purpose:  Prototypes, and definitions for warping related work.
    00006  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00007  *
    00008  ******************************************************************************
    00009  * Copyright (c) 2003, 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 GDALWARPER_H_INCLUDED
    00031 #define GDALWARPER_H_INCLUDED
    00032
    00041 #include "gdal_alg.h"
    00042 #include "cpl_minixml.h"
    00043
    00044 CPL_C_START
    00045
    00047 typedef enum { GRA_NearestNeighbour=0,                         GRA_Bilinear=1,  GRA_Cubic=2,     GRA_CubicSpline=3, GRA_Lanczos=4
    00053 } GDALResampleAlg;
    00054
    00055 typedef int
    00056 (*GDALMaskFunc)( void *pMaskFuncArg,
    00057                  int nBandCount, GDALDataType eType,
    00058                  int nXOff, int nYOff,
    00059                  int nXSize, int nYSize,
    00060                  GByte **papabyImageData,
    00061                  int bMaskIsFloat, void *pMask );
    00062
    00063 CPLErr CPL_DLL
    00064 GDALWarpNoDataMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
    00065                       int nXOff, int nYOff, int nXSize, int nYSize,
    00066                       GByte **papabyImageData, int bMaskIsFloat,
    00067                       void *pValidityMask );
    00068
    00069 CPLErr CPL_DLL
    00070 GDALWarpDstAlphaMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
    00071                         int nXOff, int nYOff, int nXSize, int nYSize,
    00072                         GByte ** /*ppImageData */,
    00073                         int bMaskIsFloat, void *pValidityMask );
    00074 CPLErr CPL_DLL
    00075 GDALWarpSrcAlphaMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
    00076                         int nXOff, int nYOff, int nXSize, int nYSize,
    00077                         GByte ** /*ppImageData */,
    00078                         int bMaskIsFloat, void *pValidityMask );
    00079
    00080 CPLErr CPL_DLL
    00081 GDALWarpSrcMaskMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
    00082                        int nXOff, int nYOff, int nXSize, int nYSize,
    00083                        GByte ** /*ppImageData */,
    00084                        int bMaskIsFloat, void *pValidityMask );
    00085
    00086 CPLErr CPL_DLL
    00087 GDALWarpCutlineMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
    00088                        int nXOff, int nYOff, int nXSize, int nYSize,
    00089                        GByte ** /* ppImageData */,
    00090                        int bMaskIsFloat, void *pValidityMask );
    00091
    00092 /************************************************************************/
    00093 /*                           GDALWarpOptions                            */
    00094 /************************************************************************/
    00095
    00097 typedef struct {
    00098
    00099     char              **papszWarpOptions;
    00100
    00102     double              dfWarpMemoryLimit;
    00103
    00105     GDALResampleAlg     eResampleAlg;
    00106
    00109     GDALDataType        eWorkingDataType;
    00110
    00112     GDALDatasetH        hSrcDS;
    00113
    00115     GDALDatasetH        hDstDS;
    00116
    00118     int                 nBandCount;
    00119
    00121     int                *panSrcBands;
    00122
    00124     int                *panDstBands;
    00125
    00127     int                nSrcAlphaBand;
    00128
    00130     int                nDstAlphaBand;
    00131
    00133     double             *padfSrcNoDataReal;
    00136     double             *padfSrcNoDataImag;
    00137
    00139     double             *padfDstNoDataReal;
    00142     double             *padfDstNoDataImag;
    00143
    00146     GDALProgressFunc    pfnProgress;
    00147
    00149     void               *pProgressArg;
    00150
    00152     GDALTransformerFunc pfnTransformer;
    00153
    00155     void                *pTransformerArg;
    00156
    00157     GDALMaskFunc       *papfnSrcPerBandValidityMaskFunc;
    00158     void              **papSrcPerBandValidityMaskFuncArg;
    00159
    00160     GDALMaskFunc        pfnSrcValidityMaskFunc;
    00161     void               *pSrcValidityMaskFuncArg;
    00162
    00163     GDALMaskFunc        pfnSrcDensityMaskFunc;
    00164     void               *pSrcDensityMaskFuncArg;
    00165
    00166     GDALMaskFunc        pfnDstDensityMaskFunc;
    00167     void               *pDstDensityMaskFuncArg;
    00168
    00169     GDALMaskFunc        pfnDstValidityMaskFunc;
    00170     void               *pDstValidityMaskFuncArg;
    00171
    00172     CPLErr              (*pfnPreWarpChunkProcessor)( void *pKern, void *pArg );
    00173     void               *pPreWarpProcessorArg;
    00174
    00175     CPLErr              (*pfnPostWarpChunkProcessor)( void *pKern, void *pArg);
    00176     void               *pPostWarpProcessorArg;
    00177
    00179     void               *hCutline;
    00180
    00182     double              dfCutlineBlendDist;
    00183
    00184 } GDALWarpOptions;
    00185
    00186 GDALWarpOptions CPL_DLL * CPL_STDCALL GDALCreateWarpOptions(void);
    00187 void CPL_DLL CPL_STDCALL GDALDestroyWarpOptions( GDALWarpOptions * );
    00188 GDALWarpOptions CPL_DLL * CPL_STDCALL
    00189 GDALCloneWarpOptions( const GDALWarpOptions * );
    00190
    00191 CPLXMLNode CPL_DLL * CPL_STDCALL
    00192       GDALSerializeWarpOptions( const GDALWarpOptions * );
    00193 GDALWarpOptions CPL_DLL * CPL_STDCALL
    00194       GDALDeserializeWarpOptions( CPLXMLNode * );
    00195
    00196 /************************************************************************/
    00197 /*                         GDALReprojectImage()                         */
    00198 /************************************************************************/
    00199
    00200 CPLErr CPL_DLL CPL_STDCALL
    00201 GDALReprojectImage( GDALDatasetH hSrcDS, const char *pszSrcWKT,
    00202                     GDALDatasetH hDstDS, const char *pszDstWKT,
    00203                     GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit,
    00204                     double dfMaxError,
    00205                     GDALProgressFunc pfnProgress, void *pProgressArg,
    00206                     GDALWarpOptions *psOptions );
    00207
    00208 CPLErr CPL_DLL CPL_STDCALL
    00209 GDALCreateAndReprojectImage( GDALDatasetH hSrcDS, const char *pszSrcWKT,
    00210                     const char *pszDstFilename, const char *pszDstWKT,
    00211                     GDALDriverH hDstDriver, char **papszCreateOptions,
    00212                     GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit,
    00213                     double dfMaxError,
    00214                     GDALProgressFunc pfnProgress, void *pProgressArg,
    00215                     GDALWarpOptions *psOptions );
    00216
    00217 /************************************************************************/
    00218 /*                           VRTWarpedDataset                           */
    00219 /************************************************************************/
    00220
    00221 GDALDatasetH CPL_DLL CPL_STDCALL
    00222 GDALAutoCreateWarpedVRT( GDALDatasetH hSrcDS,
    00223                          const char *pszSrcWKT, const char *pszDstWKT,
    00224                          GDALResampleAlg eResampleAlg,
    00225                          double dfMaxError, const GDALWarpOptions *psOptions );
    00226
    00227 GDALDatasetH CPL_DLL CPL_STDCALL
    00228 GDALCreateWarpedVRT( GDALDatasetH hSrcDS,
    00229                      int nPixels, int nLines, double *padfGeoTransform,
    00230                      GDALWarpOptions *psOptions );
    00231
    00232 CPLErr CPL_DLL CPL_STDCALL
    00233 GDALInitializeWarpedVRT( GDALDatasetH hDS,
    00234                          GDALWarpOptions *psWO );
    00235
    00236 CPL_C_END
    00237
    00238 #ifdef __cplusplus
    00239
    00240 /************************************************************************/
    00241 /*                            GDALWarpKernel                            */
    00242 /*                                                                      */
    00243 /*      This class represents the lowest level of abstraction.  It      */
    00244 /*      is holds the imagery for one "chunk" of a warp, and the         */
    00245 /*      pre-prepared masks.  All IO is done before and after it's       */
    00246 /*      operation.  This class is not normally used by the              */
    00247 /*      application.                                                    */
    00248 /************************************************************************/
    00249
    00250 class CPL_DLL GDALWarpKernel
    00251 {
    00252 public:
    00253     char              **papszWarpOptions;
    00254
    00255     GDALResampleAlg     eResample;
    00256     GDALDataType        eWorkingDataType;
    00257     int                 nBands;
    00258
    00259     int                 nSrcXSize;
    00260     int                 nSrcYSize;
    00261     GByte               **papabySrcImage;
    00262
    00263     GUInt32           **papanBandSrcValid;
    00264     GUInt32            *panUnifiedSrcValid;
    00265     float              *pafUnifiedSrcDensity;
    00266
    00267     int                 nDstXSize;
    00268     int                 nDstYSize;
    00269     GByte             **papabyDstImage;
    00270     GUInt32            *panDstValid;
    00271     float              *pafDstDensity;
    00272
    00273     double              dfXScale;   // Resampling scale, i.e.
    00274     double              dfYScale;   // nDstSize/nSrcSize.
    00275     double              dfXFilter;  // Size of filter kernel.
    00276     double              dfYFilter;
    00277     int                 nXRadius;   // Size of window to filter.
    00278     int                 nYRadius;
    00279     int                 nFiltInitX; // Filtering offset
    00280     int                 nFiltInitY;
    00281
    00282     int                 nSrcXOff;
    00283     int                 nSrcYOff;
    00284
    00285     int                 nDstXOff;
    00286     int                 nDstYOff;
    00287
    00288     GDALTransformerFunc pfnTransformer;
    00289     void                *pTransformerArg;
    00290
    00291     GDALProgressFunc    pfnProgress;
    00292     void                *pProgress;
    00293
    00294     double              dfProgressBase;
    00295     double              dfProgressScale;
    00296
    00297     double              *padfDstNoDataReal;
    00298
    00299                        GDALWarpKernel();
    00300     virtual           ~GDALWarpKernel();
    00301
    00302     CPLErr              Validate();
    00303     CPLErr              PerformWarp();
    00304 };
    00305
    00306 /************************************************************************/
    00307 /*                         GDALWarpOperation()                          */
    00308 /*                                                                      */
    00309 /*      This object is application created, or created by a higher      */
    00310 /*      level convenience function.  It is responsible for              */
    00311 /*      subdividing the operation into chunks, loading and saving       */
    00312 /*      imagery, and establishing the varios validity and density       */
    00313 /*      masks.  Actual resampling is done by the GDALWarpKernel.        */
    00314 /************************************************************************/
    00315
    00316 class CPL_DLL GDALWarpOperation {
    00317 private:
    00318     GDALWarpOptions *psOptions;
    00319
    00320     void            WipeOptions();
    00321     int             ValidateOptions();
    00322
    00323     CPLErr          ComputeSourceWindow( int nDstXOff, int nDstYOff,
    00324                                          int nDstXSize, int nDstYSize,
    00325                                          int *pnSrcXOff, int *pnSrcYOff,
    00326                                          int *pnSrcXSize, int *pnSrcYSize );
    00327
    00328     CPLErr          CreateKernelMask( GDALWarpKernel *, int iBand,
    00329                                       const char *pszType );
    00330
    00331     void            *hThread1Mutex;
    00332     void            *hThread2Mutex;
    00333     void            *hIOMutex;
    00334     void            *hWarpMutex;
    00335
    00336     int             nChunkListCount;
    00337     int             nChunkListMax;
    00338     int            *panChunkList;
    00339
    00340     int             bReportTimings;
    00341     unsigned long   nLastTimeReported;
    00342
    00343     void            WipeChunkList();
    00344     CPLErr          CollectChunkList( int nDstXOff, int nDstYOff,
    00345                                       int nDstXSize, int nDstYSize );
    00346     void            ReportTiming( const char * );
    00347
    00348 public:
    00349                     GDALWarpOperation();
    00350     virtual        ~GDALWarpOperation();
    00351
    00352     CPLErr          Initialize( const GDALWarpOptions *psNewOptions );
    00353
    00354     const GDALWarpOptions         *GetOptions();
    00355
    00356     CPLErr          ChunkAndWarpImage( int nDstXOff, int nDstYOff,
    00357                                        int nDstXSize, int nDstYSize );
    00358     CPLErr          ChunkAndWarpMulti( int nDstXOff, int nDstYOff,
    00359                                        int nDstXSize, int nDstYSize );
    00360     CPLErr          WarpRegion( int nDstXOff, int nDstYOff,
    00361                                 int nDstXSize, int nDstYSize,
    00362                                 int nSrcXOff=0, int nSrcYOff=0,
    00363                                 int nSrcXSize=0, int nSrcYSize=0,
    00364                                 double dfProgressBase=0.0, double dfProgressScale=1.0);
    00365
    00366     CPLErr          WarpRegionToBuffer( int nDstXOff, int nDstYOff,
    00367                                         int nDstXSize, int nDstYSize,
    00368                                         void *pDataBuf,
    00369                                         GDALDataType eBufDataType,
    00370                                         int nSrcXOff=0, int nSrcYOff=0,
    00371                                         int nSrcXSize=0, int nSrcYSize=0,
    00372                                         double dfProgressBase=0.0, double dfProgressScale=1.0);
    00373 };
    00374
    00375 #endif /* def __cplusplus */
    00376
    00377 CPL_C_START
    00378
    00379 typedef void * GDALWarpOperationH;
    00380
    00381 GDALWarpOperationH CPL_DLL GDALCreateWarpOperation(const GDALWarpOptions* );
    00382 void CPL_DLL GDALDestroyWarpOperation( GDALWarpOperationH );
    00383 CPLErr CPL_DLL GDALChunkAndWarpImage( GDALWarpOperationH, int, int, int, int );
    00384 CPLErr CPL_DLL GDALChunkAndWarpMulti( GDALWarpOperationH, int, int, int, int );
    00385 CPLErr CPL_DLL GDALWarpRegion( GDALWarpOperationH,
    00386                                int, int, int, int, int, int, int, int );
    00387 CPLErr CPL_DLL GDALWarpRegionToBuffer( GDALWarpOperationH, int, int, int, int,
    00388                                        void *, GDALDataType,
    00389                                        int, int, int, int );
    00390
    00391 CPL_C_END
    00392
    00393 #endif /* ndef GDAL_ALG_H_INCLUDED */

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