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# gdal_pam.h

    00001 /******************************************************************************
    00002  * $Id: gdal_pam.h 16731 2009-04-07 02:18:52Z warmerdam $
    00003  *
    00004  * Project:  GDAL Core
    00005  * Purpose:  Declaration for Peristable Auxilary Metadata classes.
    00006  * Author:   Frank Warmerdam, warmerdam@pobox.com
    00007  *
    00008  ******************************************************************************
    00009  * Copyright (c) 2005, Frank Warmerdam <warmerdam@pobox.com>
    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_PAM_H_INCLUDED
    00031 #define GDAL_PAM_H_INCLUDED
    00032
    00033 #include "gdal_priv.h"
    00034
    00035 class GDALPamRasterBand;
    00036
    00037 /* Clone Info Flags */
    00038
    00039 #define GCIF_GEOTRANSFORM       0x01
    00040 #define GCIF_PROJECTION         0x02
    00041 #define GCIF_METADATA           0x04
    00042 #define GCIF_GCPS               0x08
    00043
    00044 #define GCIF_NODATA             0x001000
    00045 #define GCIF_CATEGORYNAMES      0x002000
    00046 #define GCIF_MINMAX             0x004000
    00047 #define GCIF_SCALEOFFSET        0x008000
    00048 #define GCIF_UNITTYPE           0x010000
    00049 #define GCIF_COLORTABLE         0x020000
    00050 #define GCIF_COLORINTERP        0x020000
    00051 #define GCIF_BAND_METADATA      0x040000
    00052 #define GCIF_RAT                0x080000
    00053 #define GCIF_MASK               0x100000
    00054
    00055 #define GCIF_ONLY_IF_MISSING    0x10000000
    00056 #define GCIF_PROCESS_BANDS      0x20000000
    00057
    00058 #define GCIF_PAM_DEFAULT        (GCIF_GEOTRANSFORM | GCIF_PROJECTION |     \
    00059                                  GCIF_METADATA | GCIF_GCPS |               \
    00060                                  GCIF_NODATA | GCIF_CATEGORYNAMES |        \
    00061                                  GCIF_MINMAX | GCIF_SCALEOFFSET |          \
    00062                                  GCIF_UNITTYPE | GCIF_COLORTABLE |         \
    00063                                  GCIF_COLORINTERP | GCIF_BAND_METADATA |   \
    00064                                  GCIF_RAT | GCIF_MASK |                    \
    00065                                  GCIF_ONLY_IF_MISSING | GCIF_PROCESS_BANDS )
    00066
    00067 /* GDAL PAM Flags */
    00068 #define GPF_DIRTY               0x01  // .pam file needs to be written on close
    00069 #define GPF_TRIED_READ_FAILED   0x02  // no need to keep trying to read .pam.
    00070 #define GPF_DISABLED            0x04  // do not try any PAM stuff.
    00071 #define GPF_AUXMODE             0x08  // store info in .aux (HFA) file.
    00072 #define GPF_NOSAVE              0x10  // do not try to save pam info.
    00073
    00074 /* ==================================================================== */
    00075 /*      GDALDatasetPamInfo                                              */
    00076 /*                                                                      */
    00077 /*      We make these things a seperate structure of information        */
    00078 /*      primarily so we can modify it without altering the size of      */
    00079 /*      the GDALPamDataset.  It is an effort to reduce ABI churn for    */
    00080 /*      driver plugins.                                                 */
    00081 /* ==================================================================== */
    00082 class GDALDatasetPamInfo
    00083 {
    00084 public:
    00085     char        *pszPamFilename;
    00086
    00087     char        *pszProjection;
    00088
    00089     int         bHaveGeoTransform;
    00090     double      adfGeoTransform[6];
    00091
    00092     int         nGCPCount;
    00093     GDAL_GCP   *pasGCPList;
    00094     char       *pszGCPProjection;
    00095
    00096     CPLString   osPhysicalFilename;
    00097     CPLString   osSubdatasetName;
    00098 };
    00099
    00100 /* ******************************************************************** */
    00101 /*                           GDALPamDataset                             */
    00102 /* ******************************************************************** */
    00103
    00104 class CPL_DLL GDALPamDataset : public GDALDataset
    00105 {
    00106     friend class GDALPamRasterBand;
    00107
    00108   protected:
    00109                 GDALPamDataset(void);
    00110
    00111     int         nPamFlags;
    00112     GDALDatasetPamInfo *psPam;
    00113
    00114     virtual CPLXMLNode *SerializeToXML( const char *);
    00115     virtual CPLErr      XMLInit( CPLXMLNode *, const char * );
    00116
    00117     virtual CPLErr TryLoadXML();
    00118     virtual CPLErr TrySaveXML();
    00119
    00120     CPLErr  TryLoadAux();
    00121     CPLErr  TrySaveAux();
    00122
    00123     virtual const char *BuildPamFilename();
    00124
    00125     void   PamInitialize();
    00126     void   PamClear();
    00127
    00128     void   SetPhysicalFilename( const char * );
    00129     const char *GetPhysicalFilename();
    00130     void   SetSubdatasetName( const char *);
    00131     const char *GetSubdatasetName();
    00132
    00133   public:
    00134     virtual     ~GDALPamDataset();
    00135
    00136     virtual void FlushCache(void);
    00137
    00138     virtual const char *GetProjectionRef(void);
    00139     virtual CPLErr SetProjection( const char * );
    00140
    00141     virtual CPLErr GetGeoTransform( double * );
    00142     virtual CPLErr SetGeoTransform( double * );
    00143
    00144     virtual int    GetGCPCount();
    00145     virtual const char *GetGCPProjection();
    00146     virtual const GDAL_GCP *GetGCPs();
    00147     virtual CPLErr SetGCPs( int nGCPCount, const GDAL_GCP *pasGCPList,
    00148                             const char *pszGCPProjection );
    00149
    00150     virtual CPLErr      SetMetadata( char ** papszMetadata,
    00151                                      const char * pszDomain = "" );
    00152     virtual CPLErr      SetMetadataItem( const char * pszName,
    00153                                          const char * pszValue,
    00154                                          const char * pszDomain = "" );
    00155     virtual char      **GetMetadata( const char * pszDomain = "" );
    00156     virtual const char *GetMetadataItem( const char * pszName,
    00157                                          const char * pszDomain = "" );
    00158
    00159     virtual char      **GetFileList(void);
    00160
    00161     virtual CPLErr CloneInfo( GDALDataset *poSrcDS, int nCloneInfoFlags );
    00162
    00163     virtual CPLErr IBuildOverviews( const char *pszResampling,
    00164                                     int nOverviews, int *panOverviewList,
    00165                                     int nListBands, int *panBandList,
    00166                                     GDALProgressFunc pfnProgress,
    00167                                     void * pProgressData );
    00168
    00169
    00170     // "semi private" methods.
    00171     void   MarkPamDirty() { nPamFlags |= GPF_DIRTY; }
    00172     GDALDatasetPamInfo *GetPamInfo() { return psPam; }
    00173     int    GetPamFlags() { return nPamFlags; }
    00174     void   SetPamFlags(int nValue ) { nPamFlags = nValue; }
    00175 };
    00176
    00177 /* ==================================================================== */
    00178 /*      GDALRasterBandPamInfo                                           */
    00179 /*                                                                      */
    00180 /*      We make these things a seperate structure of information        */
    00181 /*      primarily so we can modify it without altering the size of      */
    00182 /*      the GDALPamDataset.  It is an effort to reduce ABI churn for    */
    00183 /*      driver plugins.                                                 */
    00184 /* ==================================================================== */
    00185 typedef struct {
    00186     GDALPamDataset *poParentDS;
    00187
    00188     int            bNoDataValueSet;
    00189     double         dfNoDataValue;
    00190
    00191     GDALColorTable *poColorTable;
    00192
    00193     GDALColorInterp eColorInterp;
    00194
    00195     char           *pszUnitType;
    00196     char           **papszCategoryNames;
    00197
    00198     double         dfOffset;
    00199     double         dfScale;
    00200
    00201     int            bHaveMinMax;
    00202     double         dfMin;
    00203     double         dfMax;
    00204
    00205     int            bHaveStats;
    00206     double         dfMean;
    00207     double         dfStdDev;
    00208
    00209     CPLXMLNode     *psSavedHistograms;
    00210
    00211     GDALRasterAttributeTable *poDefaultRAT;
    00212
    00213 } GDALRasterBandPamInfo;
    00214
    00215 /* ******************************************************************** */
    00216 /*                          GDALPamRasterBand                           */
    00217 /* ******************************************************************** */
    00218 class CPL_DLL GDALPamRasterBand : public GDALRasterBand
    00219 {
    00220     friend class GDALPamDataset;
    00221
    00222   protected:
    00223
    00224     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath );
    00225     virtual CPLErr      XMLInit( CPLXMLNode *, const char * );
    00226
    00227     void   PamInitialize();
    00228     void   PamClear();
    00229
    00230     GDALRasterBandPamInfo *psPam;
    00231
    00232   public:
    00233                 GDALPamRasterBand();
    00234     virtual     ~GDALPamRasterBand();
    00235
    00236     virtual CPLErr SetNoDataValue( double );
    00237     virtual double GetNoDataValue( int *pbSuccess = NULL );
    00238
    00239     virtual CPLErr SetColorTable( GDALColorTable * );
    00240     virtual GDALColorTable *GetColorTable();
    00241
    00242     virtual CPLErr SetColorInterpretation( GDALColorInterp );
    00243     virtual GDALColorInterp GetColorInterpretation();
    00244
    00245     virtual const char *GetUnitType();
    00246     CPLErr SetUnitType( const char * );
    00247
    00248     virtual char **GetCategoryNames();
    00249     virtual CPLErr SetCategoryNames( char ** );
    00250
    00251     virtual double GetOffset( int *pbSuccess = NULL );
    00252     CPLErr SetOffset( double );
    00253     virtual double GetScale( int *pbSuccess = NULL );
    00254     CPLErr SetScale( double );
    00255
    00256     virtual CPLErr  GetHistogram( double dfMin, double dfMax,
    00257                           int nBuckets, int * panHistogram,
    00258                           int bIncludeOutOfRange, int bApproxOK,
    00259                           GDALProgressFunc, void *pProgressData );
    00260
    00261     virtual CPLErr GetDefaultHistogram( double *pdfMin, double *pdfMax,
    00262                                         int *pnBuckets, int ** ppanHistogram,
    00263                                         int bForce,
    00264                                         GDALProgressFunc, void *pProgressData);
    00265
    00266     virtual CPLErr SetDefaultHistogram( double dfMin, double dfMax,
    00267                                         int nBuckets, int *panHistogram );
    00268
    00269     virtual CPLErr      SetMetadata( char ** papszMetadata,
    00270                                      const char * pszDomain = "" );
    00271     virtual CPLErr      SetMetadataItem( const char * pszName,
    00272                                          const char * pszValue,
    00273                                          const char * pszDomain = "" );
    00274
    00275     virtual const GDALRasterAttributeTable *GetDefaultRAT();
    00276     virtual CPLErr SetDefaultRAT( const GDALRasterAttributeTable * );
    00277
    00278     // new in GDALPamRasterBand.
    00279     virtual CPLErr CloneInfo( GDALRasterBand *poSrcBand, int nCloneInfoFlags );
    00280
    00281     // "semi private" methods.
    00282     GDALRasterBandPamInfo *GetPamInfo() { return psPam; }
    00283 };
    00284
    00285 // These are mainly helper functions for internal use.
    00286 int CPL_DLL PamParseHistogram( CPLXMLNode *psHistItem,
    00287                                double *pdfMin, double *pdfMax,
    00288                                int *pnBuckets, int **ppanHistogram,
    00289                                int *pbIncludeOutOfRange, int *pbApproxOK );
    00290 CPLXMLNode CPL_DLL *
    00291 PamFindMatchingHistogram( CPLXMLNode *psSavedHistograms,
    00292                           double dfMin, double dfMax, int nBuckets,
    00293                           int bIncludeOutOfRange, int bApproxOK );
    00294 CPLXMLNode CPL_DLL *
    00295 PamHistogramToXMLTree( double dfMin, double dfMax,
    00296                        int nBuckets, int * panHistogram,
    00297                        int bIncludeOutOfRange, int bApprox );
    00298
    00299 // For managing the proxy file database.
    00300 const char CPL_DLL * PamGetProxy( const char * );
    00301 const char CPL_DLL * PamAllocateProxy( const char * );
    00302 const char CPL_DLL * PamDeallocateProxy( const char * );
    00303 void CPL_DLL PamCleanProxyDB( void );
    00304
    00305 #endif /* ndef GDAL_PAM_H_INCLUDED */

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