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* $Id: gdalwarper.h 17659 2009-09-20 19:02:37Z rouault $
*
* Project: GDAL High Performance Warper
* Purpose: Prototypes, and definitions for warping related work.
* Author: Frank Warmerdam, warmerdam@pobox.com
*
******************************************************************************
* Copyright (c) 2003, Frank Warmerdam
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
#ifndef GDALWARPER_H_INCLUDED
#define GDALWARPER_H_INCLUDED
/**
* \file gdalwarper.h
*
* GDAL warper related entry points and definitions. Eventually it is
* expected that this file will be mostly private to the implementation,
* and the public C entry points will be available in gdal_alg.h.
*/
#include "gdal_alg.h"
#include "cpl_minixml.h"
CPL_C_START
/*! Warp Resampling Algorithm */
typedef enum {
/*! Nearest neighbour (select on one input pixel) */ GRA_NearestNeighbour=0,
/*! Bilinear (2x2 kernel) */ GRA_Bilinear=1,
/*! Cubic Convolution Approximation (4x4 kernel) */ GRA_Cubic=2,
/*! Cubic B-Spline Approximation (4x4 kernel) */ GRA_CubicSpline=3,
/*! Lanczos windowed sinc interpolation (6x6 kernel) */ GRA_Lanczos=4
} GDALResampleAlg;
typedef int
(*GDALMaskFunc)( void *pMaskFuncArg,
int nBandCount, GDALDataType eType,
int nXOff, int nYOff,
int nXSize, int nYSize,
GByte **papabyImageData,
int bMaskIsFloat, void *pMask );
CPLErr CPL_DLL
GDALWarpNoDataMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
int nXOff, int nYOff, int nXSize, int nYSize,
GByte **papabyImageData, int bMaskIsFloat,
void *pValidityMask );
CPLErr CPL_DLL
GDALWarpDstAlphaMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
int nXOff, int nYOff, int nXSize, int nYSize,
GByte ** /*ppImageData */,
int bMaskIsFloat, void *pValidityMask );
CPLErr CPL_DLL
GDALWarpSrcAlphaMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
int nXOff, int nYOff, int nXSize, int nYSize,
GByte ** /*ppImageData */,
int bMaskIsFloat, void *pValidityMask );
CPLErr CPL_DLL
GDALWarpCutlineMasker( void *pMaskFuncArg, int nBandCount, GDALDataType eType,
int nXOff, int nYOff, int nXSize, int nYSize,
GByte ** /* ppImageData */,
int bMaskIsFloat, void *pValidityMask );
/************************************************************************/
/* GDALWarpOptions */
/************************************************************************/
/** Warp control options for use with GDALWarpOperation::Initialize() */
typedef struct {
char **papszWarpOptions;
/*! In bytes, 0.0 for internal default */
double dfWarpMemoryLimit;
/*! Resampling algorithm to use */
GDALResampleAlg eResampleAlg;
/*! data type to use during warp operation, GDT_Unknown lets the algorithm
select the type */
GDALDataType eWorkingDataType;
/*! Source image dataset. */
GDALDatasetH hSrcDS;
/*! Destination image dataset - may be NULL if only using GDALWarpOperation::WarpRegionToBuffer(). */
GDALDatasetH hDstDS;
/*! Number of bands to process, may be 0 to select all bands. */
int nBandCount;
/*! The band numbers for the source bands to process (1 based) */
int *panSrcBands;
/*! The band numbers for the destination bands to process (1 based) */
int *panDstBands;
/*! The source band so use as an alpha (transparency) value, 0=disabled */
int nSrcAlphaBand;
/*! The dest. band so use as an alpha (transparency) value, 0=disabled */
int nDstAlphaBand;
/*! The "nodata" value real component for each input band, if NULL there isn't one */
double *padfSrcNoDataReal;
/*! The "nodata" value imaginary component - may be NULL even if real
component is provided. */
double *padfSrcNoDataImag;
/*! The "nodata" value real component for each output band, if NULL there isn't one */
double *padfDstNoDataReal;
/*! The "nodata" value imaginary component - may be NULL even if real
component is provided. */
double *padfDstNoDataImag;
/*! GDALProgressFunc() compatible progress reporting function, or NULL
if there isn't one. */
GDALProgressFunc pfnProgress;
/*! Callback argument to be passed to pfnProgress. */
void *pProgressArg;
/*! Type of spatial point transformer function */
GDALTransformerFunc pfnTransformer;
/*! Handle to image transformer setup structure */
void *pTransformerArg;
GDALMaskFunc *papfnSrcPerBandValidityMaskFunc;
void **papSrcPerBandValidityMaskFuncArg;
GDALMaskFunc pfnSrcValidityMaskFunc;
void *pSrcValidityMaskFuncArg;
GDALMaskFunc pfnSrcDensityMaskFunc;
void *pSrcDensityMaskFuncArg;
GDALMaskFunc pfnDstDensityMaskFunc;
void *pDstDensityMaskFuncArg;
GDALMaskFunc pfnDstValidityMaskFunc;
void *pDstValidityMaskFuncArg;
CPLErr (*pfnPreWarpChunkProcessor)( void *pKern, void *pArg );
void *pPreWarpProcessorArg;
CPLErr (*pfnPostWarpChunkProcessor)( void *pKern, void *pArg);
void *pPostWarpProcessorArg;
/*! Optional OGRPolygonH for a masking cutline. */
void *hCutline;
/*! Optional blending distance to apply across cutline in pixels, default is zero. */
double dfCutlineBlendDist;
} GDALWarpOptions;
GDALWarpOptions CPL_DLL * CPL_STDCALL GDALCreateWarpOptions(void);
void CPL_DLL CPL_STDCALL GDALDestroyWarpOptions( GDALWarpOptions * );
GDALWarpOptions CPL_DLL * CPL_STDCALL
GDALCloneWarpOptions( const GDALWarpOptions * );
CPLXMLNode CPL_DLL * CPL_STDCALL
GDALSerializeWarpOptions( const GDALWarpOptions * );
GDALWarpOptions CPL_DLL * CPL_STDCALL
GDALDeserializeWarpOptions( CPLXMLNode * );
/************************************************************************/
/* GDALReprojectImage() */
/************************************************************************/
CPLErr CPL_DLL CPL_STDCALL
GDALReprojectImage( GDALDatasetH hSrcDS, const char *pszSrcWKT,
GDALDatasetH hDstDS, const char *pszDstWKT,
GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit,
double dfMaxError,
GDALProgressFunc pfnProgress, void *pProgressArg,
GDALWarpOptions *psOptions );
CPLErr CPL_DLL CPL_STDCALL
GDALCreateAndReprojectImage( GDALDatasetH hSrcDS, const char *pszSrcWKT,
const char *pszDstFilename, const char *pszDstWKT,
GDALDriverH hDstDriver, char **papszCreateOptions,
GDALResampleAlg eResampleAlg, double dfWarpMemoryLimit,
double dfMaxError,
GDALProgressFunc pfnProgress, void *pProgressArg,
GDALWarpOptions *psOptions );
/************************************************************************/
/* VRTWarpedDataset */
/************************************************************************/
GDALDatasetH CPL_DLL CPL_STDCALL
GDALAutoCreateWarpedVRT( GDALDatasetH hSrcDS,
const char *pszSrcWKT, const char *pszDstWKT,
GDALResampleAlg eResampleAlg,
double dfMaxError, const GDALWarpOptions *psOptions );
GDALDatasetH CPL_DLL CPL_STDCALL
GDALCreateWarpedVRT( GDALDatasetH hSrcDS,
int nPixels, int nLines, double *padfGeoTransform,
GDALWarpOptions *psOptions );
CPLErr CPL_DLL CPL_STDCALL
GDALInitializeWarpedVRT( GDALDatasetH hDS,
GDALWarpOptions *psWO );
CPL_C_END
#ifdef __cplusplus
/************************************************************************/
/* GDALWarpKernel */
/* */
/* This class represents the lowest level of abstraction. It */
/* is holds the imagery for one "chunk" of a warp, and the */
/* pre-prepared masks. All IO is done before and after it's */
/* operation. This class is not normally used by the */
/* application. */
/************************************************************************/
class CPL_DLL GDALWarpKernel
{
public:
char **papszWarpOptions;
GDALResampleAlg eResample;
GDALDataType eWorkingDataType;
int nBands;
int nSrcXSize;
int nSrcYSize;
GByte **papabySrcImage;
GUInt32 **papanBandSrcValid;
GUInt32 *panUnifiedSrcValid;
float *pafUnifiedSrcDensity;
int nDstXSize;
int nDstYSize;
GByte **papabyDstImage;
GUInt32 *panDstValid;
float *pafDstDensity;
double dfXScale; // Resampling scale, i.e.
double dfYScale; // nDstSize/nSrcSize.
double dfXFilter; // Size of filter kernel.
double dfYFilter;
int nXRadius; // Size of window to filter.
int nYRadius;
int nFiltInitX; // Filtering offset
int nFiltInitY;
int nSrcXOff;
int nSrcYOff;
int nDstXOff;
int nDstYOff;
GDALTransformerFunc pfnTransformer;
void *pTransformerArg;
GDALProgressFunc pfnProgress;
void *pProgress;
double dfProgressBase;
double dfProgressScale;
double *padfDstNoDataReal;
GDALWarpKernel();
virtual ~GDALWarpKernel();
CPLErr Validate();
CPLErr PerformWarp();
};
/************************************************************************/
/* GDALWarpOperation() */
/* */
/* This object is application created, or created by a higher */
/* level convenience function. It is responsible for */
/* subdividing the operation into chunks, loading and saving */
/* imagery, and establishing the varios validity and density */
/* masks. Actual resampling is done by the GDALWarpKernel. */
/************************************************************************/
class CPL_DLL GDALWarpOperation {
private:
GDALWarpOptions *psOptions;
double dfProgressBase;
double dfProgressScale;
void WipeOptions();
int ValidateOptions();
CPLErr ComputeSourceWindow( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize,
int *pnSrcXOff, int *pnSrcYOff,
int *pnSrcXSize, int *pnSrcYSize );
CPLErr CreateKernelMask( GDALWarpKernel *, int iBand,
const char *pszType );
void *hThread1Mutex;
void *hThread2Mutex;
void *hIOMutex;
void *hWarpMutex;
int nChunkListCount;
int nChunkListMax;
int *panChunkList;
int bReportTimings;
unsigned long nLastTimeReported;
void WipeChunkList();
CPLErr CollectChunkList( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize );
void ReportTiming( const char * );
public:
GDALWarpOperation();
virtual ~GDALWarpOperation();
CPLErr Initialize( const GDALWarpOptions *psNewOptions );
const GDALWarpOptions *GetOptions();
CPLErr ChunkAndWarpImage( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize );
CPLErr ChunkAndWarpMulti( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize );
CPLErr WarpRegion( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize,
int nSrcXOff=0, int nSrcYOff=0,
int nSrcXSize=0, int nSrcYSize=0 );
CPLErr WarpRegionToBuffer( int nDstXOff, int nDstYOff,
int nDstXSize, int nDstYSize,
void *pDataBuf,
GDALDataType eBufDataType,
int nSrcXOff=0, int nSrcYOff=0,
int nSrcXSize=0, int nSrcYSize=0 );
};
#endif /* def __cplusplus */
CPL_C_START
typedef void * GDALWarpOperationH;
GDALWarpOperationH CPL_DLL GDALCreateWarpOperation(const GDALWarpOptions* );
void CPL_DLL GDALDestroyWarpOperation( GDALWarpOperationH );
CPLErr CPL_DLL GDALChunkAndWarpImage( GDALWarpOperationH, int, int, int, int );
CPLErr CPL_DLL GDALChunkAndWarpMulti( GDALWarpOperationH, int, int, int, int );
CPLErr CPL_DLL GDALWarpRegion( GDALWarpOperationH,
int, int, int, int, int, int, int, int );
CPLErr CPL_DLL GDALWarpRegionToBuffer( GDALWarpOperationH, int, int, int, int,
void *, GDALDataType,
int, int, int, int );
CPL_C_END
#endif /* ndef GDAL_ALG_H_INCLUDED */
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