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/******************************************************************************
 * $Id: gdal_pam.h 36501 2016-11-25 14:09:24Z rouault $
 *
 * Project:  GDAL Core
 * Purpose:  Declaration for Peristable Auxiliary Metadata classes.
 * Author:   Frank Warmerdam, warmerdam@pobox.com
 *
 ******************************************************************************
 * Copyright (c) 2005, Frank Warmerdam <warmerdam@pobox.com>
 *
 * 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 GDAL_PAM_H_INCLUDED
#define GDAL_PAM_H_INCLUDED

//! @cond Doxygen_Suppress

#include "gdal_priv.h"

class GDALPamRasterBand;

/* Clone Info Flags */

#define GCIF_GEOTRANSFORM       0x01
#define GCIF_PROJECTION         0x02
#define GCIF_METADATA           0x04
#define GCIF_GCPS               0x08

#define GCIF_NODATA             0x001000
#define GCIF_CATEGORYNAMES      0x002000
#define GCIF_MINMAX             0x004000
#define GCIF_SCALEOFFSET        0x008000
#define GCIF_UNITTYPE           0x010000
#define GCIF_COLORTABLE         0x020000
#define GCIF_COLORINTERP        0x020000
#define GCIF_BAND_METADATA      0x040000
#define GCIF_RAT                0x080000
#define GCIF_MASK               0x100000
#define GCIF_BAND_DESCRIPTION   0x200000

#define GCIF_ONLY_IF_MISSING    0x10000000
#define GCIF_PROCESS_BANDS      0x20000000

#define GCIF_PAM_DEFAULT        (GCIF_GEOTRANSFORM | GCIF_PROJECTION |     \
                                 GCIF_METADATA | GCIF_GCPS |               \
                                 GCIF_NODATA | GCIF_CATEGORYNAMES |        \
                                 GCIF_MINMAX | GCIF_SCALEOFFSET |          \
                                 GCIF_UNITTYPE | GCIF_COLORTABLE |         \
                                 GCIF_COLORINTERP | GCIF_BAND_METADATA |   \
                                 GCIF_RAT | GCIF_MASK |                    \
                                 GCIF_ONLY_IF_MISSING | GCIF_PROCESS_BANDS|\
                                 GCIF_BAND_DESCRIPTION)

/* GDAL PAM Flags */
/* ERO 2011/04/13 : GPF_AUXMODE seems to be unimplemented */
#define GPF_DIRTY               0x01  // .pam file needs to be written on close
#define GPF_TRIED_READ_FAILED   0x02  // no need to keep trying to read .pam.
#define GPF_DISABLED            0x04  // do not try any PAM stuff.
#define GPF_AUXMODE             0x08  // store info in .aux (HFA) file.
#define GPF_NOSAVE              0x10  // do not try to save pam info.

/* ==================================================================== */
/*      GDALDatasetPamInfo                                              */
/*                                                                      */
/*      We make these things a separate structure of information        */
/*      primarily so we can modify it without altering the size of      */
/*      the GDALPamDataset.  It is an effort to reduce ABI churn for    */
/*      driver plugins.                                                 */
/* ==================================================================== */
class GDALDatasetPamInfo
{
public:
    char        *pszPamFilename;

    char        *pszProjection;

    int         bHaveGeoTransform;
    double      adfGeoTransform[6];

    int         nGCPCount;
    GDAL_GCP   *pasGCPList;
    char       *pszGCPProjection;

    CPLString   osPhysicalFilename;
    CPLString   osSubdatasetName;
    CPLString   osAuxFilename;

    int         bHasMetadata;
};
//! @endcond

/* ******************************************************************** */
/*                           GDALPamDataset                             */
/* ******************************************************************** */

/** PAM dataset */
class CPL_DLL GDALPamDataset : public GDALDataset
{
    friend class GDALPamRasterBand;

  private:
    int IsPamFilenameAPotentialSiblingFile();

  protected:

                GDALPamDataset(void);
//! @cond Doxygen_Suppress
    int         nPamFlags;
    GDALDatasetPamInfo *psPam;

    virtual CPLXMLNode *SerializeToXML( const char *);
    virtual CPLErr      XMLInit( CPLXMLNode *, const char * );

    virtual CPLErr TryLoadXML(char **papszSiblingFiles = NULL);
    virtual CPLErr TrySaveXML();

    CPLErr  TryLoadAux(char **papszSiblingFiles = NULL);
    CPLErr  TrySaveAux();

    virtual const char *BuildPamFilename();

    void   PamInitialize();
    void   PamClear();

    void   SetPhysicalFilename( const char * );
    const char *GetPhysicalFilename();
    void   SetSubdatasetName( const char *);
    const char *GetSubdatasetName();
//! @endcond

  public:
    virtual     ~GDALPamDataset();

    virtual void FlushCache(void) CPL_OVERRIDE;

    virtual const char *GetProjectionRef(void) CPL_OVERRIDE;
    virtual CPLErr SetProjection( const char * ) CPL_OVERRIDE;

    virtual CPLErr GetGeoTransform( double * ) CPL_OVERRIDE;
    virtual CPLErr SetGeoTransform( double * ) CPL_OVERRIDE;

    virtual int    GetGCPCount() CPL_OVERRIDE;
    virtual const char *GetGCPProjection() CPL_OVERRIDE;
    virtual const GDAL_GCP *GetGCPs() CPL_OVERRIDE;
    virtual CPLErr SetGCPs( int nGCPCount, const GDAL_GCP *pasGCPList,
                            const char *pszGCPProjection ) CPL_OVERRIDE;

    virtual CPLErr      SetMetadata( char ** papszMetadata,
                                     const char * pszDomain = "" ) CPL_OVERRIDE;
    virtual CPLErr      SetMetadataItem( const char * pszName,
                                         const char * pszValue,
                                         const char * pszDomain = "" ) CPL_OVERRIDE;
    virtual char      **GetMetadata( const char * pszDomain = "" ) CPL_OVERRIDE;
    virtual const char *GetMetadataItem( const char * pszName,
                                         const char * pszDomain = "" ) CPL_OVERRIDE;

    virtual char      **GetFileList(void) CPL_OVERRIDE;

//! @cond Doxygen_Suppress
    virtual CPLErr CloneInfo( GDALDataset *poSrcDS, int nCloneInfoFlags );

    virtual CPLErr IBuildOverviews( const char *pszResampling,
                                    int nOverviews, int *panOverviewList,
                                    int nListBands, int *panBandList,
                                    GDALProgressFunc pfnProgress,
                                    void * pProgressData ) CPL_OVERRIDE;

    // "semi private" methods.
    void   MarkPamDirty() { nPamFlags |= GPF_DIRTY; }
    GDALDatasetPamInfo *GetPamInfo() { return psPam; }
    int    GetPamFlags() { return nPamFlags; }
    void   SetPamFlags(int nValue ) { nPamFlags = nValue; }
//! @endcond

  private:
    CPL_DISALLOW_COPY_ASSIGN(GDALPamDataset)
};

//! @cond Doxygen_Suppress
/* ==================================================================== */
/*      GDALRasterBandPamInfo                                           */
/*                                                                      */
/*      We make these things a separate structure of information        */
/*      primarily so we can modify it without altering the size of      */
/*      the GDALPamDataset.  It is an effort to reduce ABI churn for    */
/*      driver plugins.                                                 */
/* ==================================================================== */
typedef struct {
    GDALPamDataset *poParentDS;

    int            bNoDataValueSet;
    double         dfNoDataValue;

    GDALColorTable *poColorTable;

    GDALColorInterp eColorInterp;

    char           *pszUnitType;
    char           **papszCategoryNames;

    double         dfOffset;
    double         dfScale;

    int            bHaveMinMax;
    double         dfMin;
    double         dfMax;

    int            bHaveStats;
    double         dfMean;
    double         dfStdDev;

    CPLXMLNode     *psSavedHistograms;

    GDALRasterAttributeTable *poDefaultRAT;

} GDALRasterBandPamInfo;
//! @endcond
/* ******************************************************************** */
/*                          GDALPamRasterBand                           */
/* ******************************************************************** */

/** PAM raster band */
class CPL_DLL GDALPamRasterBand : public GDALRasterBand
{
    friend class GDALPamDataset;

  protected:
//! @cond Doxygen_Suppress
    virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath );
    virtual CPLErr      XMLInit( CPLXMLNode *, const char * );

    void   PamInitialize();
    void   PamClear();

    GDALRasterBandPamInfo *psPam;
//! @endcond

  public:
                GDALPamRasterBand();
//! @cond Doxygen_Suppress
    explicit    GDALPamRasterBand(int bForceCachedIO);
//! @endcond
    virtual     ~GDALPamRasterBand();

    virtual void        SetDescription( const char * ) CPL_OVERRIDE;

    virtual CPLErr SetNoDataValue( double ) CPL_OVERRIDE;
    virtual double GetNoDataValue( int *pbSuccess = NULL ) CPL_OVERRIDE;
    virtual CPLErr DeleteNoDataValue() CPL_OVERRIDE;

    virtual CPLErr SetColorTable( GDALColorTable * ) CPL_OVERRIDE;
    virtual GDALColorTable *GetColorTable() CPL_OVERRIDE;

    virtual CPLErr SetColorInterpretation( GDALColorInterp ) CPL_OVERRIDE;
    virtual GDALColorInterp GetColorInterpretation() CPL_OVERRIDE;

    virtual const char *GetUnitType() CPL_OVERRIDE;
    CPLErr SetUnitType( const char * ) CPL_OVERRIDE;

    virtual char **GetCategoryNames() CPL_OVERRIDE;
    virtual CPLErr SetCategoryNames( char ** ) CPL_OVERRIDE;

    virtual double GetOffset( int *pbSuccess = NULL ) CPL_OVERRIDE;
    CPLErr SetOffset( double ) CPL_OVERRIDE;
    virtual double GetScale( int *pbSuccess = NULL ) CPL_OVERRIDE;
    CPLErr SetScale( double ) CPL_OVERRIDE;

    virtual CPLErr  GetHistogram( double dfMin, double dfMax,
                          int nBuckets, GUIntBig * panHistogram,
                          int bIncludeOutOfRange, int bApproxOK,
                          GDALProgressFunc, void *pProgressData ) CPL_OVERRIDE;

    virtual CPLErr GetDefaultHistogram( double *pdfMin, double *pdfMax,
                                        int *pnBuckets, GUIntBig ** ppanHistogram,
                                        int bForce,
                                        GDALProgressFunc, void *pProgressData) CPL_OVERRIDE;

    virtual CPLErr SetDefaultHistogram( double dfMin, double dfMax,
                                        int nBuckets, GUIntBig *panHistogram ) CPL_OVERRIDE;

    virtual CPLErr      SetMetadata( char ** papszMetadata,
                                     const char * pszDomain = "" ) CPL_OVERRIDE;
    virtual CPLErr      SetMetadataItem( const char * pszName,
                                         const char * pszValue,
                                         const char * pszDomain = "" ) CPL_OVERRIDE;

    virtual GDALRasterAttributeTable *GetDefaultRAT() CPL_OVERRIDE;
    virtual CPLErr SetDefaultRAT( const GDALRasterAttributeTable * ) CPL_OVERRIDE;

//! @cond Doxygen_Suppress
    // new in GDALPamRasterBand.
    virtual CPLErr CloneInfo( GDALRasterBand *poSrcBand, int nCloneInfoFlags );

    // "semi private" methods.
    GDALRasterBandPamInfo *GetPamInfo() { return psPam; }
//! @endcond
  private:
    CPL_DISALLOW_COPY_ASSIGN(GDALPamRasterBand)
};

//! @cond Doxygen_Suppress
// These are mainly helper functions for internal use.
int CPL_DLL PamParseHistogram( CPLXMLNode *psHistItem,
                               double *pdfMin, double *pdfMax,
                               int *pnBuckets, GUIntBig **ppanHistogram,
                               int *pbIncludeOutOfRange, int *pbApproxOK );
CPLXMLNode CPL_DLL *
PamFindMatchingHistogram( CPLXMLNode *psSavedHistograms,
                          double dfMin, double dfMax, int nBuckets,
                          int bIncludeOutOfRange, int bApproxOK );
CPLXMLNode CPL_DLL *
PamHistogramToXMLTree( double dfMin, double dfMax,
                       int nBuckets, GUIntBig * panHistogram,
                       int bIncludeOutOfRange, int bApprox );

// For managing the proxy file database.
const char CPL_DLL * PamGetProxy( const char * );
const char CPL_DLL * PamAllocateProxy( const char * );
const char CPL_DLL * PamDeallocateProxy( const char * );
void CPL_DLL PamCleanProxyDB( void );

//! @endcond

#endif /* ndef GDAL_PAM_H_INCLUDED */