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Green_GoodERP18_FSJ_Standard/PostgreSQL/include/vrtdataset.h

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  1. /******************************************************************************

  2.  * $Id: vrtdataset.h 977f2da59e46852f49534361860bb92f9c6ad1fd 2019-03-14 21:46:14 +0100 Even Rouault $

  3.  *

  4.  * Project:  Virtual GDAL Datasets

  5.  * Purpose:  Declaration of virtual gdal dataset classes.

  6.  * Author:   Frank Warmerdam, warmerdam@pobox.com

  7.  *

  8.  ******************************************************************************

  9.  * Copyright (c) 2001, Frank Warmerdam <warmerdam@pobox.com>

  10.  * Copyright (c) 2007-2013, Even Rouault <even dot rouault at mines-paris dot org>

  11.  *

  12.  * Permission is hereby granted, free of charge, to any person obtaining a

  13.  * copy of this software and associated documentation files (the "Software"),

  14.  * to deal in the Software without restriction, including without limitation

  15.  * the rights to use, copy, modify, merge, publish, distribute, sublicense,

  16.  * and/or sell copies of the Software, and to permit persons to whom the

  17.  * Software is furnished to do so, subject to the following conditions:

  18.  *

  19.  * The above copyright notice and this permission notice shall be included

  20.  * in all copies or substantial portions of the Software.

  21.  *

  22.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

  23.  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  24.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL

  25.  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  26.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

  27.  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER

  28.  * DEALINGS IN THE SOFTWARE.

  29.  ****************************************************************************/

  30. 

  31. #ifndef VIRTUALDATASET_H_INCLUDED

  32. #define VIRTUALDATASET_H_INCLUDED

  33. 

  34. #ifndef DOXYGEN_SKIP

  35. 

  36. #include "cpl_hash_set.h"

  37. #include "gdal_pam.h"

  38. #include "gdal_priv.h"

  39. #include "gdal_rat.h"

  40. #include "gdal_vrt.h"

  41. #include "gdal_rat.h"

  42. 

  43. #include <map>

  44. #include <memory>

  45. #include <vector>

  46. 

  47. int VRTApplyMetadata( CPLXMLNode *, GDALMajorObject * );

  48. CPLXMLNode *VRTSerializeMetadata( GDALMajorObject * );

  49. CPLErr GDALRegisterDefaultPixelFunc();

  50. 

  51. #if 0

  52. int VRTWarpedOverviewTransform( void *pTransformArg, int bDstToSrc,

  53.                                 int nPointCount,

  54.                                 double *padfX, double *padfY, double *padfZ,

  55.                                 int *panSuccess );

  56. void* VRTDeserializeWarpedOverviewTransformer( CPLXMLNode *psTree );

  57. #endif

  58. 

  59. /************************************************************************/

  60. /*                          VRTOverviewInfo()                           */

  61. /************************************************************************/

  62. class VRTOverviewInfo

  63. {

  64.     CPL_DISALLOW_COPY_ASSIGN(VRTOverviewInfo)

  65. 

  66. public:

  67.     CPLString       osFilename{};

  68.     int             nBand = 0;

  69.     GDALRasterBand *poBand = nullptr;

  70.     int             bTriedToOpen = FALSE;

  71. 

  72.     VRTOverviewInfo() = default;

  73.     VRTOverviewInfo(VRTOverviewInfo&& oOther) noexcept:

  74.         osFilename(std::move(oOther.osFilename)),

  75.         nBand(oOther.nBand),

  76.         poBand(oOther.poBand),

  77.         bTriedToOpen(oOther.bTriedToOpen)

  78.     {

  79.         oOther.poBand = nullptr;

  80.     }

  81. 

  82.     ~VRTOverviewInfo() {

  83.         if( poBand == nullptr )

  84.             /* do nothing */;

  85.         else if( poBand->GetDataset()->GetShared() )

  86.             GDALClose( /* (GDALDatasetH) */ poBand->GetDataset() );

  87.         else

  88.             poBand->GetDataset()->Dereference();

  89.     }

  90. };

  91. 

  92. /************************************************************************/

  93. /*                              VRTSource                               */

  94. /************************************************************************/

  95. 

  96. class CPL_DLL VRTSource

  97. {

  98. public:

  99.     virtual ~VRTSource();

  100. 

  101.     virtual CPLErr  RasterIO( GDALDataType eBandDataType,

  102.                               int nXOff, int nYOff, int nXSize, int nYSize,

  103.                               void *pData, int nBufXSize, int nBufYSize,

  104.                               GDALDataType eBufType,

  105.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  106.                               GDALRasterIOExtraArg* psExtraArg ) = 0;

  107. 

  108.     virtual double GetMinimum( int nXSize, int nYSize, int *pbSuccess ) = 0;

  109.     virtual double GetMaximum( int nXSize, int nYSize, int *pbSuccess ) = 0;

  110.     virtual CPLErr ComputeRasterMinMax( int nXSize, int nYSize, int bApproxOK,

  111.                                         double* adfMinMax ) = 0;

  112.     virtual CPLErr ComputeStatistics( int nXSize, int nYSize,

  113.                                       int bApproxOK,

  114.                                       double *pdfMin, double *pdfMax,

  115.                                       double *pdfMean, double *pdfStdDev,

  116.                                       GDALProgressFunc pfnProgress,

  117.                                       void *pProgressData ) = 0;

  118.     virtual CPLErr  GetHistogram( int nXSize, int nYSize,

  119.                                   double dfMin, double dfMax,

  120.                                   int nBuckets, GUIntBig * panHistogram,

  121.                                   int bIncludeOutOfRange, int bApproxOK,

  122.                                   GDALProgressFunc pfnProgress,

  123.                                   void *pProgressData ) = 0;

  124. 

  125.     virtual CPLErr  XMLInit( CPLXMLNode *psTree, const char *, void*,

  126.                              std::map<CPLString, GDALDataset*>& ) = 0;

  127.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) = 0;

  128. 

  129.     virtual void   GetFileList(char*** ppapszFileList, int *pnSize,

  130.                                int *pnMaxSize, CPLHashSet* hSetFiles);

  131. 

  132.     virtual int    IsSimpleSource() { return FALSE; }

  133.     virtual CPLErr FlushCache() { return CE_None; }

  134. };

  135. 

  136. typedef VRTSource *(*VRTSourceParser)(CPLXMLNode *, const char *, void* pUniqueHandle,

  137.                                       std::map<CPLString, GDALDataset*>& oMapSharedSources);

  138. 

  139. VRTSource *VRTParseCoreSources( CPLXMLNode *psTree, const char *, void* pUniqueHandle,

  140.                                 std::map<CPLString, GDALDataset*>& oMapSharedSources);

  141. VRTSource *VRTParseFilterSources( CPLXMLNode *psTree, const char *, void* pUniqueHandle,

  142.                                   std::map<CPLString, GDALDataset*>& oMapSharedSources );

  143. 

  144. /************************************************************************/

  145. /*                              VRTDataset                              */

  146. /************************************************************************/

  147. 

  148. class VRTRasterBand;

  149. 

  150. template<class T> struct VRTFlushCacheStruct

  151. {

  152.     static void FlushCache(T& obj);

  153. };

  154. 

  155. class VRTWarpedDataset;

  156. class VRTPansharpenedDataset;

  157. 

  158. class CPL_DLL VRTDataset : public GDALDataset

  159. {

  160.     friend class VRTRasterBand;

  161.     friend struct VRTFlushCacheStruct<VRTDataset>;

  162.     friend struct VRTFlushCacheStruct<VRTWarpedDataset>;

  163.     friend struct VRTFlushCacheStruct<VRTPansharpenedDataset>;

  164.     friend class VRTSourcedRasterBand;

  165. 

  166.     OGRSpatialReference* m_poSRS = nullptr;

  167. 

  168.     int            m_bGeoTransformSet;

  169.     double         m_adfGeoTransform[6];

  170. 

  171.     int            m_nGCPCount;

  172.     GDAL_GCP      *m_pasGCPList;

  173.     OGRSpatialReference *m_poGCP_SRS = nullptr;

  174. 

  175.     int            m_bNeedsFlush;

  176.     int            m_bWritable;

  177. 

  178.     char          *m_pszVRTPath;

  179. 

  180.     VRTRasterBand *m_poMaskBand;

  181. 

  182.     int            m_bCompatibleForDatasetIO;

  183.     int            CheckCompatibleForDatasetIO();

  184.     void           ExpandProxyBands();

  185. 

  186.     std::vector<GDALDataset*> m_apoOverviews;

  187.     std::vector<GDALDataset*> m_apoOverviewsBak;

  188.     char         **m_papszXMLVRTMetadata;

  189. 

  190.     std::map<CPLString, GDALDataset*> m_oMapSharedSources;

  191. 

  192.     VRTRasterBand*      InitBand(const char* pszSubclass, int nBand,

  193.                                  bool bAllowPansharpened);

  194. 

  195.     CPL_DISALLOW_COPY_ASSIGN(VRTDataset)

  196. 

  197.   protected:

  198.     virtual int         CloseDependentDatasets() override;

  199. 

  200.   public:

  201.                  VRTDataset(int nXSize, int nYSize);

  202.     virtual ~VRTDataset();

  203. 

  204.     void          SetNeedsFlush() { m_bNeedsFlush = TRUE; }

  205.     virtual void  FlushCache() override;

  206. 

  207.     void SetWritable(int bWritableIn) { m_bWritable = bWritableIn; }

  208. 

  209.     virtual CPLErr          CreateMaskBand( int nFlags ) override;

  210.     void SetMaskBand(VRTRasterBand* poMaskBand);

  211. 

  212.     const OGRSpatialReference* GetSpatialRef() const override { return m_poSRS; }

  213.     CPLErr SetSpatialRef(const OGRSpatialReference* poSRS) override;

  214. 

  215.     virtual CPLErr GetGeoTransform( double * ) override;

  216.     virtual CPLErr SetGeoTransform( double * ) override;

  217. 

  218.     virtual CPLErr SetMetadata( char **papszMetadata,

  219.                                 const char *pszDomain = "" ) override;

  220.     virtual CPLErr SetMetadataItem( const char *pszName, const char *pszValue,

  221.                                     const char *pszDomain = "" ) override;

  222. 

  223.     virtual char** GetMetadata( const char *pszDomain = "" ) override;

  224. 

  225.     virtual int    GetGCPCount() override;

  226.     const OGRSpatialReference* GetGCPSpatialRef() const override { return m_poGCP_SRS; }

  227.     virtual const GDAL_GCP *GetGCPs() override;

  228.     using GDALDataset::SetGCPs;

  229.     CPLErr SetGCPs( int nGCPCount, const GDAL_GCP *pasGCPList,

  230.                     const OGRSpatialReference* poSRS ) override;

  231. 

  232.     virtual CPLErr AddBand( GDALDataType eType,

  233.                             char **papszOptions=nullptr ) override;

  234. 

  235.     virtual char      **GetFileList() override;

  236. 

  237.     virtual CPLErr  IRasterIO( GDALRWFlag eRWFlag,

  238.                                int nXOff, int nYOff, int nXSize, int nYSize,

  239.                                void * pData, int nBufXSize, int nBufYSize,

  240.                                GDALDataType eBufType,

  241.                                int nBandCount, int *panBandMap,

  242.                                GSpacing nPixelSpace, GSpacing nLineSpace,

  243.                                GSpacing nBandSpace,

  244.                                GDALRasterIOExtraArg* psExtraArg) override;

  245. 

  246.     virtual CPLErr AdviseRead( int nXOff, int nYOff, int nXSize, int nYSize,

  247.                                int nBufXSize, int nBufYSize,

  248.                                GDALDataType eDT,

  249.                                int nBandCount, int *panBandList,

  250.                                char **papszOptions ) override;

  251. 

  252.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath);

  253.     virtual CPLErr      XMLInit( CPLXMLNode *, const char * );

  254. 

  255.     virtual CPLErr IBuildOverviews( const char *, int, int *,

  256.                                     int, int *, GDALProgressFunc, void * ) override;

  257. 

  258.     /* Used by PDF driver for example */

  259.     GDALDataset*        GetSingleSimpleSource();

  260.     void                BuildVirtualOverviews();

  261. 

  262.     void                UnsetPreservedRelativeFilenames();

  263. 

  264.     static int          Identify( GDALOpenInfo * );

  265.     static GDALDataset *Open( GDALOpenInfo * );

  266.     static GDALDataset *OpenXML( const char *, const char * = nullptr,

  267.                                  GDALAccess eAccess = GA_ReadOnly );

  268.     static GDALDataset *Create( const char * pszName,

  269.                                 int nXSize, int nYSize, int nBands,

  270.                                 GDALDataType eType, char ** papszOptions );

  271.     static CPLErr       Delete( const char * pszFilename );

  272. };

  273. 

  274. /************************************************************************/

  275. /*                           VRTWarpedDataset                           */

  276. /************************************************************************/

  277. 

  278. class GDALWarpOperation;

  279. class VRTWarpedRasterBand;

  280. 

  281. class CPL_DLL VRTWarpedDataset : public VRTDataset

  282. {

  283.     int               m_nBlockXSize;

  284.     int               m_nBlockYSize;

  285.     GDALWarpOperation *m_poWarper;

  286. 

  287.     int               m_nOverviewCount;

  288.     VRTWarpedDataset **m_papoOverviews;

  289.     int               m_nSrcOvrLevel;

  290. 

  291.     void              CreateImplicitOverviews();

  292. 

  293.     struct VerticalShiftGrid

  294.     {

  295.         CPLString osVGrids;

  296.         int       bInverse;

  297.         double    dfToMeterSrc;

  298.         double    dfToMeterDest;

  299.         CPLStringList aosOptions;

  300.     };

  301.     std::vector<VerticalShiftGrid> m_aoVerticalShiftGrids;

  302. 

  303.     friend class VRTWarpedRasterBand;

  304. 

  305.     CPL_DISALLOW_COPY_ASSIGN(VRTWarpedDataset)

  306. 

  307.   protected:

  308.     virtual int         CloseDependentDatasets() override;

  309. 

  310. public:

  311.                       VRTWarpedDataset( int nXSize, int nYSize );

  312.     virtual ~VRTWarpedDataset();

  313. 

  314.     virtual void  FlushCache() override;

  315. 

  316.     CPLErr            Initialize( /* GDALWarpOptions */ void * );

  317. 

  318.     virtual CPLErr IBuildOverviews( const char *, int, int *,

  319.                                     int, int *, GDALProgressFunc, void * ) override;

  320. 

  321.     virtual CPLErr SetMetadataItem( const char *pszName, const char *pszValue,

  322.                                     const char *pszDomain = "" ) override;

  323. 

  324.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  325.     virtual CPLErr    XMLInit( CPLXMLNode *, const char * ) override;

  326. 

  327.     virtual CPLErr AddBand( GDALDataType eType,

  328.                             char **papszOptions=nullptr ) override;

  329. 

  330.     virtual char      **GetFileList() override;

  331. 

  332.     CPLErr            ProcessBlock( int iBlockX, int iBlockY );

  333. 

  334.     void              GetBlockSize( int *, int * ) const;

  335. 

  336.     void              SetApplyVerticalShiftGrid(const char* pszVGrids,

  337.                                              int bInverse,

  338.                                              double dfToMeterSrc,

  339.                                              double dfToMeterDest,

  340.                                              char** papszOptions );

  341. };

  342. 

  343. /************************************************************************/

  344. /*                        VRTPansharpenedDataset                        */

  345. /************************************************************************/

  346. 

  347. class GDALPansharpenOperation;

  348. 

  349. typedef enum

  350. {

  351.     GTAdjust_Union,

  352.     GTAdjust_Intersection,

  353.     GTAdjust_None,

  354.     GTAdjust_NoneWithoutWarning

  355. } GTAdjustment;

  356. 

  357. class VRTPansharpenedDataset : public VRTDataset

  358. {

  359.     friend class      VRTPansharpenedRasterBand;

  360. 

  361.     int               m_nBlockXSize;

  362.     int               m_nBlockYSize;

  363.     GDALPansharpenOperation* m_poPansharpener;

  364.     VRTPansharpenedDataset* m_poMainDataset;

  365.     std::vector<VRTPansharpenedDataset*> m_apoOverviewDatasets;

  366.     // Map from absolute to relative.

  367.     std::map<CPLString,CPLString> m_oMapToRelativeFilenames;

  368. 

  369.     int               m_bLoadingOtherBands;

  370. 

  371.     GByte            *m_pabyLastBufferBandRasterIO;

  372.     int               m_nLastBandRasterIOXOff;

  373.     int               m_nLastBandRasterIOYOff;

  374.     int               m_nLastBandRasterIOXSize;

  375.     int               m_nLastBandRasterIOYSize;

  376.     GDALDataType      m_eLastBandRasterIODataType;

  377. 

  378.     GTAdjustment      m_eGTAdjustment;

  379.     int               m_bNoDataDisabled;

  380. 

  381.     std::vector<GDALDataset*> m_apoDatasetsToClose;

  382. 

  383.     CPL_DISALLOW_COPY_ASSIGN(VRTPansharpenedDataset)

  384. 

  385.   protected:

  386.     virtual int         CloseDependentDatasets() override;

  387. 

  388. public:

  389.                       VRTPansharpenedDataset( int nXSize, int nYSize );

  390.     virtual ~VRTPansharpenedDataset();

  391. 

  392.     virtual void  FlushCache() override;

  393. 

  394.     virtual CPLErr    XMLInit( CPLXMLNode *, const char * ) override;

  395.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  396. 

  397.     CPLErr            XMLInit( CPLXMLNode *psTree, const char *pszVRTPath,

  398.                                GDALRasterBandH hPanchroBandIn,

  399.                                int nInputSpectralBandsIn,

  400.                                GDALRasterBandH* pahInputSpectralBandsIn );

  401. 

  402.     virtual CPLErr AddBand( GDALDataType eType,

  403.                             char **papszOptions=nullptr ) override;

  404. 

  405.     virtual char      **GetFileList() override;

  406. 

  407.     virtual CPLErr  IRasterIO( GDALRWFlag eRWFlag,

  408.                                int nXOff, int nYOff, int nXSize, int nYSize,

  409.                                void * pData, int nBufXSize, int nBufYSize,

  410.                                GDALDataType eBufType,

  411.                                int nBandCount, int *panBandMap,

  412.                                GSpacing nPixelSpace, GSpacing nLineSpace,

  413.                                GSpacing nBandSpace,

  414.                                GDALRasterIOExtraArg* psExtraArg) override;

  415. 

  416.     void              GetBlockSize( int *, int * ) const;

  417. 

  418.     GDALPansharpenOperation* GetPansharpener() { return m_poPansharpener; }

  419. };

  420. 

  421. /************************************************************************/

  422. /*                            VRTRasterBand                             */

  423. /*                                                                      */

  424. /*      Provides support for all the various kinds of metadata but      */

  425. /*      no raster access.  That is handled by derived classes.          */

  426. /************************************************************************/

  427. 

  428. class CPL_DLL VRTRasterBand : public GDALRasterBand

  429. {

  430.   protected:

  431.     int            m_bIsMaskBand;

  432. 

  433.     int            m_bNoDataValueSet;

  434.     // If set to true, will not report the existence of nodata.

  435.     int            m_bHideNoDataValue;

  436.     double         m_dfNoDataValue;

  437. 

  438.     std::unique_ptr<GDALColorTable> m_poColorTable;

  439. 

  440.     GDALColorInterp m_eColorInterp;

  441. 

  442.     char           *m_pszUnitType;

  443.     char           **m_papszCategoryNames;

  444. 

  445.     double         m_dfOffset;

  446.     double         m_dfScale;

  447. 

  448.     CPLXMLNode    *m_psSavedHistograms;

  449. 

  450.     void           Initialize( int nXSize, int nYSize );

  451. 

  452.     std::vector<VRTOverviewInfo> m_apoOverviews;

  453. 

  454.     VRTRasterBand *m_poMaskBand;

  455. 

  456.     std::unique_ptr<GDALRasterAttributeTable> m_poRAT;

  457. 

  458.     CPL_DISALLOW_COPY_ASSIGN(VRTRasterBand)

  459. 

  460.   public:

  461. 

  462.                     VRTRasterBand();

  463.     virtual        ~VRTRasterBand();

  464. 

  465.     virtual CPLErr         XMLInit( CPLXMLNode *, const char *, void*,

  466.                                     std::map<CPLString, GDALDataset*>& );

  467.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath );

  468. 

  469.     virtual CPLErr SetNoDataValue( double ) override;

  470.     virtual double GetNoDataValue( int *pbSuccess = nullptr ) override;

  471.     virtual CPLErr DeleteNoDataValue() override;

  472. 

  473.     virtual CPLErr SetColorTable( GDALColorTable * ) override;

  474.     virtual GDALColorTable *GetColorTable() override;

  475. 

  476.     virtual GDALRasterAttributeTable *GetDefaultRAT() override;

  477.     virtual CPLErr SetDefaultRAT( const GDALRasterAttributeTable * poRAT ) override;

  478. 

  479.     virtual CPLErr SetColorInterpretation( GDALColorInterp ) override;

  480.     virtual GDALColorInterp GetColorInterpretation() override;

  481. 

  482.     virtual const char *GetUnitType() override;

  483.     CPLErr SetUnitType( const char * ) override;

  484. 

  485.     virtual char **GetCategoryNames() override;

  486.     virtual CPLErr SetCategoryNames( char ** ) override;

  487. 

  488.     virtual CPLErr SetMetadata( char **papszMD, const char *pszDomain = "" ) override;

  489.     virtual CPLErr SetMetadataItem( const char *pszName, const char *pszValue,

  490.                                     const char *pszDomain = "" ) override;

  491. 

  492.     virtual double GetOffset( int *pbSuccess = nullptr ) override;

  493.     CPLErr SetOffset( double ) override;

  494.     virtual double GetScale( int *pbSuccess = nullptr ) override;

  495.     CPLErr SetScale( double ) override;

  496. 

  497.     virtual int GetOverviewCount() override;

  498.     virtual GDALRasterBand *GetOverview(int) override;

  499. 

  500.     virtual CPLErr  GetHistogram( double dfMin, double dfMax,

  501.                                   int nBuckets, GUIntBig * panHistogram,

  502.                                   int bIncludeOutOfRange, int bApproxOK,

  503.                                   GDALProgressFunc, void *pProgressData ) override;

  504. 

  505.     virtual CPLErr GetDefaultHistogram( double *pdfMin, double *pdfMax,

  506.                                         int *pnBuckets, GUIntBig ** ppanHistogram,

  507.                                         int bForce,

  508.                                         GDALProgressFunc, void *pProgressData) override;

  509. 

  510.     virtual CPLErr SetDefaultHistogram( double dfMin, double dfMax,

  511.                                         int nBuckets, GUIntBig *panHistogram ) override;

  512. 

  513.     CPLErr         CopyCommonInfoFrom( GDALRasterBand * );

  514. 

  515.     virtual void   GetFileList(char*** ppapszFileList, int *pnSize,

  516.                                int *pnMaxSize, CPLHashSet* hSetFiles);

  517. 

  518.     virtual void   SetDescription( const char * ) override;

  519. 

  520.     virtual GDALRasterBand *GetMaskBand() override;

  521.     virtual int             GetMaskFlags() override;

  522. 

  523.     virtual CPLErr          CreateMaskBand( int nFlagsIn ) override;

  524. 

  525.     void SetMaskBand(VRTRasterBand* poMaskBand);

  526. 

  527.     void SetIsMaskBand();

  528. 

  529.     CPLErr UnsetNoDataValue();

  530. 

  531.     virtual int         CloseDependentDatasets();

  532. 

  533.     virtual int         IsSourcedRasterBand() { return FALSE; }

  534.     virtual int         IsPansharpenRasterBand() { return FALSE; }

  535. };

  536. 

  537. /************************************************************************/

  538. /*                         VRTSourcedRasterBand                         */

  539. /************************************************************************/

  540. 

  541. class VRTSimpleSource;

  542. 

  543. class CPL_DLL VRTSourcedRasterBand : public VRTRasterBand

  544. {

  545.   private:

  546.     int            m_nRecursionCounter;

  547.     CPLString      m_osLastLocationInfo;

  548.     char         **m_papszSourceList;

  549. 

  550.     bool           CanUseSourcesMinMaxImplementations();

  551.     void           CheckSource( VRTSimpleSource *poSS );

  552. 

  553.     CPL_DISALLOW_COPY_ASSIGN(VRTSourcedRasterBand)

  554. 

  555.   public:

  556.     int            nSources;

  557.     VRTSource    **papoSources;

  558.     int            bSkipBufferInitialization;

  559. 

  560.                    VRTSourcedRasterBand( GDALDataset *poDS, int nBand );

  561.                    VRTSourcedRasterBand( GDALDataType eType,

  562.                                          int nXSize, int nYSize );

  563.                    VRTSourcedRasterBand( GDALDataset *poDS, int nBand,

  564.                                          GDALDataType eType,

  565.                                          int nXSize, int nYSize );

  566.     virtual        ~VRTSourcedRasterBand();

  567. 

  568.     virtual CPLErr IRasterIO( GDALRWFlag, int, int, int, int,

  569.                               void *, int, int, GDALDataType,

  570.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  571.                               GDALRasterIOExtraArg* psExtraArg) override;

  572. 

  573.     virtual int IGetDataCoverageStatus( int nXOff, int nYOff,

  574.                                         int nXSize, int nYSize,

  575.                                         int nMaskFlagStop,

  576.                                         double* pdfDataPct) override;

  577. 

  578.     virtual char      **GetMetadataDomainList() override;

  579.     virtual const char *GetMetadataItem( const char * pszName,

  580.                                          const char * pszDomain = "" ) override;

  581.     virtual char      **GetMetadata( const char * pszDomain = "" ) override;

  582.     virtual CPLErr      SetMetadata( char ** papszMetadata,

  583.                                      const char * pszDomain = "" ) override;

  584.     virtual CPLErr      SetMetadataItem( const char * pszName,

  585.                                          const char * pszValue,

  586.                                          const char * pszDomain = "" ) override;

  587. 

  588.     virtual CPLErr         XMLInit( CPLXMLNode *, const char *, void*,

  589.                                     std::map<CPLString, GDALDataset*>& ) override;

  590.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  591. 

  592.     virtual double GetMinimum( int *pbSuccess = nullptr ) override;

  593.     virtual double GetMaximum(int *pbSuccess = nullptr ) override;

  594.     virtual CPLErr ComputeRasterMinMax( int bApproxOK, double* adfMinMax ) override;

  595.     virtual CPLErr ComputeStatistics( int bApproxOK,

  596.                                       double *pdfMin, double *pdfMax,

  597.                                       double *pdfMean, double *pdfStdDev,

  598.                                       GDALProgressFunc pfnProgress,

  599.                                       void *pProgressData ) override;

  600.     virtual CPLErr  GetHistogram( double dfMin, double dfMax,

  601.                                   int nBuckets, GUIntBig * panHistogram,

  602.                                   int bIncludeOutOfRange, int bApproxOK,

  603.                                   GDALProgressFunc pfnProgress,

  604.                                   void *pProgressData ) override;

  605. 

  606.     CPLErr         AddSource( VRTSource * );

  607.     CPLErr         AddSimpleSource( GDALRasterBand *poSrcBand,

  608.                                     double dfSrcXOff=-1, double dfSrcYOff=-1,

  609.                                     double dfSrcXSize=-1, double dfSrcYSize=-1,

  610.                                     double dfDstXOff=-1, double dfDstYOff=-1,

  611.                                     double dfDstXSize=-1, double dfDstYSize=-1,

  612.                                     const char *pszResampling = "near",

  613.                                     double dfNoDataValue = VRT_NODATA_UNSET);

  614.     CPLErr         AddComplexSource( GDALRasterBand *poSrcBand,

  615.                                      double dfSrcXOff=-1, double dfSrcYOff=-1,

  616.                                      double dfSrcXSize=-1, double dfSrcYSize=-1,

  617.                                      double dfDstXOff=-1, double dfDstYOff=-1,

  618.                                      double dfDstXSize=-1, double dfDstYSize=-1,

  619.                                      double dfScaleOff=0.0,

  620.                                      double dfScaleRatio=1.0,

  621.                                      double dfNoDataValue = VRT_NODATA_UNSET,

  622.                                      int nColorTableComponent = 0);

  623. 

  624.     CPLErr         AddMaskBandSource( GDALRasterBand *poSrcBand,

  625.                                       double dfSrcXOff=-1, double dfSrcYOff=-1,

  626.                                       double dfSrcXSize=-1,

  627.                                       double dfSrcYSize=-1,

  628.                                       double dfDstXOff=-1, double dfDstYOff=-1,

  629.                                       double dfDstXSize=-1,

  630.                                       double dfDstYSize=-1 );

  631. 

  632.     CPLErr         AddFuncSource( VRTImageReadFunc pfnReadFunc, void *hCBData,

  633.                                   double dfNoDataValue = VRT_NODATA_UNSET );

  634. 

  635.     void           ConfigureSource(VRTSimpleSource *poSimpleSource,

  636.                                    GDALRasterBand *poSrcBand,

  637.                                    int bAddAsMaskBand,

  638.                                    double dfSrcXOff, double dfSrcYOff,

  639.                                    double dfSrcXSize, double dfSrcYSize,

  640.                                    double dfDstXOff, double dfDstYOff,

  641.                                    double dfDstXSize, double dfDstYSize );

  642. 

  643.     virtual CPLErr IReadBlock( int, int, void * ) override;

  644. 

  645.     virtual void   GetFileList(char*** ppapszFileList, int *pnSize,

  646.                                int *pnMaxSize, CPLHashSet* hSetFiles) override;

  647. 

  648.     virtual int         CloseDependentDatasets() override;

  649. 

  650.     virtual int         IsSourcedRasterBand() override { return TRUE; }

  651. 

  652.     virtual CPLErr      FlushCache() override;

  653. };

  654. 

  655. /************************************************************************/

  656. /*                         VRTWarpedRasterBand                          */

  657. /************************************************************************/

  658. 

  659. class CPL_DLL VRTWarpedRasterBand : public VRTRasterBand

  660. {

  661.   public:

  662.                    VRTWarpedRasterBand( GDALDataset *poDS, int nBand,

  663.                                         GDALDataType eType = GDT_Unknown );

  664.     virtual        ~VRTWarpedRasterBand();

  665. 

  666.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  667. 

  668.     virtual CPLErr IReadBlock( int, int, void * ) override;

  669.     virtual CPLErr IWriteBlock( int, int, void * ) override;

  670. 

  671.     virtual int GetOverviewCount() override;

  672.     virtual GDALRasterBand *GetOverview(int) override;

  673. };

  674. /************************************************************************/

  675. /*                        VRTPansharpenedRasterBand                     */

  676. /************************************************************************/

  677. 

  678. class VRTPansharpenedRasterBand : public VRTRasterBand

  679. {

  680.     int               m_nIndexAsPansharpenedBand;

  681. 

  682.   public:

  683.                    VRTPansharpenedRasterBand(

  684.                        GDALDataset *poDS, int nBand,

  685.                        GDALDataType eDataType = GDT_Unknown );

  686.     virtual        ~VRTPansharpenedRasterBand();

  687. 

  688.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  689. 

  690.     virtual CPLErr IReadBlock( int, int, void * ) override;

  691. 

  692.     virtual CPLErr  IRasterIO( GDALRWFlag eRWFlag,

  693.                                int nXOff, int nYOff, int nXSize, int nYSize,

  694.                                void * pData, int nBufXSize, int nBufYSize,

  695.                                GDALDataType eBufType,

  696.                                GSpacing nPixelSpace, GSpacing nLineSpace,

  697.                                GDALRasterIOExtraArg* psExtraArg) override;

  698. 

  699.     virtual int GetOverviewCount() override;

  700.     virtual GDALRasterBand *GetOverview(int) override;

  701. 

  702.     virtual int         IsPansharpenRasterBand() override { return TRUE; }

  703. 

  704.     void                SetIndexAsPansharpenedBand( int nIdx )

  705.         { m_nIndexAsPansharpenedBand = nIdx; }

  706.     int                 GetIndexAsPansharpenedBand() const

  707.         { return m_nIndexAsPansharpenedBand; }

  708. };

  709. 

  710. /************************************************************************/

  711. /*                         VRTDerivedRasterBand                         */

  712. /************************************************************************/

  713. 

  714. class VRTDerivedRasterBandPrivateData;

  715. 

  716. class CPL_DLL VRTDerivedRasterBand : public VRTSourcedRasterBand

  717. {

  718.     VRTDerivedRasterBandPrivateData* m_poPrivate;

  719.     bool InitializePython();

  720. 

  721.     CPL_DISALLOW_COPY_ASSIGN(VRTDerivedRasterBand)

  722. 

  723.  public:

  724.     char *pszFuncName;

  725.     GDALDataType eSourceTransferType;

  726. 

  727.     VRTDerivedRasterBand( GDALDataset *poDS, int nBand );

  728.     VRTDerivedRasterBand( GDALDataset *poDS, int nBand,

  729.                           GDALDataType eType, int nXSize, int nYSize );

  730.     virtual        ~VRTDerivedRasterBand();

  731. 

  732.     virtual CPLErr IRasterIO( GDALRWFlag, int, int, int, int,

  733.                               void *, int, int, GDALDataType,

  734.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  735.                               GDALRasterIOExtraArg* psExtraArg ) override;

  736. 

  737.     virtual int IGetDataCoverageStatus( int nXOff, int nYOff,

  738.                                         int nXSize, int nYSize,

  739.                                         int nMaskFlagStop,

  740.                                         double* pdfDataPct) override;

  741. 

  742.     static CPLErr AddPixelFunction( const char *pszFuncName,

  743.                                     GDALDerivedPixelFunc pfnPixelFunc );

  744.     static GDALDerivedPixelFunc GetPixelFunction( const char *pszFuncName );

  745. 

  746.     void SetPixelFunctionName( const char *pszFuncName );

  747.     void SetSourceTransferType( GDALDataType eDataType );

  748.     void SetPixelFunctionLanguage( const char* pszLanguage );

  749. 

  750.     virtual CPLErr         XMLInit( CPLXMLNode *, const char *, void*,

  751.                                     std::map<CPLString, GDALDataset*>& ) override;

  752.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  753. 

  754.     virtual double GetMinimum( int *pbSuccess = nullptr ) override;

  755.     virtual double GetMaximum(int *pbSuccess = nullptr ) override;

  756.     virtual CPLErr ComputeRasterMinMax( int bApproxOK, double* adfMinMax ) override;

  757.     virtual CPLErr ComputeStatistics( int bApproxOK,

  758.                                       double *pdfMin, double *pdfMax,

  759.                                       double *pdfMean, double *pdfStdDev,

  760.                                       GDALProgressFunc pfnProgress,

  761.                                       void *pProgressData ) override;

  762.     virtual CPLErr  GetHistogram( double dfMin, double dfMax,

  763.                                   int nBuckets, GUIntBig * panHistogram,

  764.                                   int bIncludeOutOfRange, int bApproxOK,

  765.                                   GDALProgressFunc pfnProgress,

  766.                                   void *pProgressData ) override;

  767. 

  768.     static void Cleanup();

  769. };

  770. 

  771. /************************************************************************/

  772. /*                           VRTRawRasterBand                           */

  773. /************************************************************************/

  774. 

  775. class RawRasterBand;

  776. 

  777. class CPL_DLL VRTRawRasterBand : public VRTRasterBand

  778. {

  779.     RawRasterBand  *m_poRawRaster;

  780. 

  781.     char           *m_pszSourceFilename;

  782.     int            m_bRelativeToVRT;

  783. 

  784.     CPL_DISALLOW_COPY_ASSIGN(VRTRawRasterBand)

  785. 

  786.   public:

  787.                    VRTRawRasterBand( GDALDataset *poDS, int nBand,

  788.                                      GDALDataType eType = GDT_Unknown );

  789.     virtual        ~VRTRawRasterBand();

  790. 

  791.     virtual CPLErr         XMLInit( CPLXMLNode *, const char *, void*,

  792.                                     std::map<CPLString, GDALDataset*>& ) override;

  793.     virtual CPLXMLNode *   SerializeToXML( const char *pszVRTPath ) override;

  794. 

  795.     virtual CPLErr IRasterIO( GDALRWFlag, int, int, int, int,

  796.                               void *, int, int, GDALDataType,

  797.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  798.                               GDALRasterIOExtraArg* psExtraArg ) override;

  799. 

  800.     virtual CPLErr IReadBlock( int, int, void * ) override;

  801.     virtual CPLErr IWriteBlock( int, int, void * ) override;

  802. 

  803.     CPLErr         SetRawLink( const char *pszFilename,

  804.                                const char *pszVRTPath,

  805.                                int bRelativeToVRT,

  806.                                vsi_l_offset nImageOffset,

  807.                                int nPixelOffset, int nLineOffset,

  808.                                const char *pszByteOrder );

  809. 

  810.     void           ClearRawLink();

  811. 

  812.     virtual void   GetFileList( char*** ppapszFileList, int *pnSize,

  813.                                 int *pnMaxSize, CPLHashSet* hSetFiles ) override;

  814. };

  815. 

  816. /************************************************************************/

  817. /*                              VRTDriver                               */

  818. /************************************************************************/

  819. 

  820. class VRTDriver : public GDALDriver

  821. {

  822.     CPL_DISALLOW_COPY_ASSIGN(VRTDriver)

  823. 

  824.   public:

  825.                  VRTDriver();

  826.     virtual ~VRTDriver();

  827. 

  828.     char         **papszSourceParsers;

  829. 

  830.     virtual char      **GetMetadataDomainList() override;

  831.     virtual char      **GetMetadata( const char * pszDomain = "" ) override;

  832.     virtual CPLErr      SetMetadata( char ** papszMetadata,

  833.                                      const char * pszDomain = "" ) override;

  834. 

  835.     VRTSource   *ParseSource( CPLXMLNode *psSrc, const char *pszVRTPath,

  836.                               void* pUniqueHandle,

  837.                               std::map<CPLString, GDALDataset*>& oMapSharedSources );

  838.     void         AddSourceParser( const char *pszElementName,

  839.                                   VRTSourceParser pfnParser );

  840. };

  841. 

  842. /************************************************************************/

  843. /*                           VRTSimpleSource                            */

  844. /************************************************************************/

  845. 

  846. class CPL_DLL VRTSimpleSource : public VRTSource

  847. {

  848.     CPL_DISALLOW_COPY_ASSIGN(VRTSimpleSource)

  849. 

  850. protected:

  851.     friend class VRTSourcedRasterBand;

  852. 

  853.     GDALRasterBand      *m_poRasterBand;

  854. 

  855.     // When poRasterBand is a mask band, poMaskBandMainBand is the band

  856.     // from which the mask band is taken.

  857.     GDALRasterBand      *m_poMaskBandMainBand;

  858. 

  859.     double              m_dfSrcXOff;

  860.     double              m_dfSrcYOff;

  861.     double              m_dfSrcXSize;

  862.     double              m_dfSrcYSize;

  863. 

  864.     double              m_dfDstXOff;

  865.     double              m_dfDstYOff;

  866.     double              m_dfDstXSize;

  867.     double              m_dfDstYSize;

  868. 

  869.     int                 m_bNoDataSet;

  870.     double              m_dfNoDataValue;

  871.     CPLString           m_osResampling;

  872. 

  873.     int                 m_nMaxValue;

  874. 

  875.     int                 m_bRelativeToVRTOri;

  876.     CPLString           m_osSourceFileNameOri;

  877.     int                 m_nExplicitSharedStatus; // -1 unknown, 0 = unshared, 1 = shared

  878. 

  879.     int                 NeedMaxValAdjustment() const;

  880. 

  881. public:

  882.             VRTSimpleSource();

  883.             VRTSimpleSource( const VRTSimpleSource* poSrcSource,

  884.                              double dfXDstRatio, double dfYDstRatio );

  885.     virtual ~VRTSimpleSource();

  886. 

  887.     virtual CPLErr  XMLInit( CPLXMLNode *psTree, const char *, void*,

  888.                              std::map<CPLString, GDALDataset*>& ) override;

  889.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  890. 

  891.     void           SetSrcBand( GDALRasterBand * );

  892.     void           SetSrcMaskBand( GDALRasterBand * );

  893.     void           SetSrcWindow( double, double, double, double );

  894.     void           SetDstWindow( double, double, double, double );

  895.     void           SetNoDataValue( double dfNoDataValue );

  896.     const CPLString& GetResampling() const { return m_osResampling; }

  897.     void           SetResampling( const char* pszResampling );

  898. 

  899.     int            GetSrcDstWindow( int, int, int, int, int, int,

  900.                                     double *pdfReqXOff, double *pdfReqYOff,

  901.                                     double *pdfReqXSize, double *pdfReqYSize,

  902.                                     int *, int *, int *, int *,

  903.                                     int *, int *, int *, int * );

  904. 

  905.     virtual CPLErr  RasterIO( GDALDataType eBandDataType,

  906.                               int nXOff, int nYOff, int nXSize, int nYSize,

  907.                               void *pData, int nBufXSize, int nBufYSize,

  908.                               GDALDataType eBufType,

  909.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  910.                               GDALRasterIOExtraArg* psExtraArgIn ) override;

  911. 

  912.     virtual double GetMinimum( int nXSize, int nYSize, int *pbSuccess ) override;

  913.     virtual double GetMaximum( int nXSize, int nYSize, int *pbSuccess ) override;

  914.     virtual CPLErr ComputeRasterMinMax( int nXSize, int nYSize, int bApproxOK,

  915.                                         double* adfMinMax ) override;

  916.     virtual CPLErr ComputeStatistics( int nXSize, int nYSize,

  917.                                       int bApproxOK,

  918.                                       double *pdfMin, double *pdfMax,

  919.                                       double *pdfMean, double *pdfStdDev,

  920.                                       GDALProgressFunc pfnProgress,

  921.                                       void *pProgressData ) override;

  922.     virtual CPLErr  GetHistogram( int nXSize, int nYSize,

  923.                                   double dfMin, double dfMax,

  924.                                   int nBuckets, GUIntBig * panHistogram,

  925.                                   int bIncludeOutOfRange, int bApproxOK,

  926.                                   GDALProgressFunc pfnProgress,

  927.                                   void *pProgressData ) override;

  928. 

  929.     void            DstToSrc( double dfX, double dfY,

  930.                               double &dfXOut, double &dfYOut ) const;

  931.     void            SrcToDst( double dfX, double dfY,

  932.                               double &dfXOut, double &dfYOut ) const;

  933. 

  934.     virtual void   GetFileList( char*** ppapszFileList, int *pnSize,

  935.                                 int *pnMaxSize, CPLHashSet* hSetFiles ) override;

  936. 

  937.     virtual int    IsSimpleSource() override { return TRUE; }

  938.     virtual const char* GetType() { return "SimpleSource"; }

  939.     virtual CPLErr FlushCache() override;

  940. 

  941.     GDALRasterBand* GetBand();

  942.     int             IsSameExceptBandNumber( VRTSimpleSource* poOtherSource );

  943.     CPLErr          DatasetRasterIO(

  944.                                GDALDataType eBandDataType,

  945.                                int nXOff, int nYOff, int nXSize, int nYSize,

  946.                                void * pData, int nBufXSize, int nBufYSize,

  947.                                GDALDataType eBufType,

  948.                                int nBandCount, int *panBandMap,

  949.                                GSpacing nPixelSpace, GSpacing nLineSpace,

  950.                                GSpacing nBandSpace,

  951.                                GDALRasterIOExtraArg* psExtraArg );

  952. 

  953.     void             UnsetPreservedRelativeFilenames();

  954. 

  955.     void             SetMaxValue( int nVal ) { m_nMaxValue = nVal; }

  956. };

  957. 

  958. /************************************************************************/

  959. /*                          VRTAveragedSource                           */

  960. /************************************************************************/

  961. 

  962. class VRTAveragedSource : public VRTSimpleSource

  963. {

  964.     CPL_DISALLOW_COPY_ASSIGN(VRTAveragedSource)

  965. 

  966. public:

  967.                     VRTAveragedSource();

  968.     virtual CPLErr  RasterIO( GDALDataType eBandDataType,

  969.                               int nXOff, int nYOff, int nXSize, int nYSize,

  970.                               void *pData, int nBufXSize, int nBufYSize,

  971.                               GDALDataType eBufType,

  972.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  973.                               GDALRasterIOExtraArg* psExtraArgIn ) override;

  974. 

  975.     virtual double GetMinimum( int nXSize, int nYSize, int *pbSuccess ) override;

  976.     virtual double GetMaximum( int nXSize, int nYSize, int *pbSuccess ) override;

  977.     virtual CPLErr ComputeRasterMinMax( int nXSize, int nYSize, int bApproxOK,

  978.                                         double* adfMinMax ) override;

  979.     virtual CPLErr ComputeStatistics( int nXSize, int nYSize,

  980.                                       int bApproxOK,

  981.                                       double *pdfMin, double *pdfMax,

  982.                                       double *pdfMean, double *pdfStdDev,

  983.                                       GDALProgressFunc pfnProgress,

  984.                                       void *pProgressData ) override;

  985.     virtual CPLErr  GetHistogram( int nXSize, int nYSize,

  986.                                   double dfMin, double dfMax,

  987.                                   int nBuckets, GUIntBig * panHistogram,

  988.                                   int bIncludeOutOfRange, int bApproxOK,

  989.                                   GDALProgressFunc pfnProgress,

  990.                                   void *pProgressData ) override;

  991. 

  992.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  993.     virtual const char* GetType() override { return "AveragedSource"; }

  994. };

  995. 

  996. /************************************************************************/

  997. /*                           VRTComplexSource                           */

  998. /************************************************************************/

  999. 

  1000. typedef enum

  1001. {

  1002.     VRT_SCALING_NONE,

  1003.     VRT_SCALING_LINEAR,

  1004.     VRT_SCALING_EXPONENTIAL,

  1005. } VRTComplexSourceScaling;

  1006. 

  1007. class CPL_DLL VRTComplexSource : public VRTSimpleSource

  1008. {

  1009.     CPL_DISALLOW_COPY_ASSIGN(VRTComplexSource)

  1010.     bool           AreValuesUnchanged() const;

  1011. 

  1012. protected:

  1013.     VRTComplexSourceScaling m_eScalingType;

  1014.     double         m_dfScaleOff;  // For linear scaling.

  1015.     double         m_dfScaleRatio;  // For linear scaling.

  1016. 

  1017.     // For non-linear scaling with a power function.

  1018.     int            m_bSrcMinMaxDefined;

  1019.     double         m_dfSrcMin;

  1020.     double         m_dfSrcMax;

  1021.     double         m_dfDstMin;

  1022.     double         m_dfDstMax;

  1023.     double         m_dfExponent;

  1024. 

  1025.     int            m_nColorTableComponent;

  1026. 

  1027.     template <class WorkingDT>

  1028.     CPLErr          RasterIOInternal( int nReqXOff, int nReqYOff,

  1029.                                       int nReqXSize, int nReqYSize,

  1030.                                       void *pData, int nOutXSize, int nOutYSize,

  1031.                                       GDALDataType eBufType,

  1032.                                       GSpacing nPixelSpace, GSpacing nLineSpace,

  1033.                                       GDALRasterIOExtraArg* psExtraArg,

  1034.                                       GDALDataType eWrkDataType );

  1035. 

  1036. public:

  1037.                    VRTComplexSource();

  1038.                    VRTComplexSource(const VRTComplexSource* poSrcSource,

  1039.                                     double dfXDstRatio, double dfYDstRatio);

  1040.     virtual        ~VRTComplexSource();

  1041. 

  1042.     virtual CPLErr RasterIO( GDALDataType eBandDataType,

  1043.                              int nXOff, int nYOff, int nXSize, int nYSize,

  1044.                              void *pData, int nBufXSize, int nBufYSize,

  1045.                              GDALDataType eBufType,

  1046.                              GSpacing nPixelSpace, GSpacing nLineSpace,

  1047.                              GDALRasterIOExtraArg* psExtraArgIn ) override;

  1048. 

  1049.     virtual double GetMinimum( int nXSize, int nYSize, int *pbSuccess ) override;

  1050.     virtual double GetMaximum( int nXSize, int nYSize, int *pbSuccess ) override;

  1051.     virtual CPLErr ComputeRasterMinMax( int nXSize, int nYSize, int bApproxOK,

  1052.                                         double* adfMinMax ) override;

  1053.     virtual CPLErr ComputeStatistics( int nXSize, int nYSize,

  1054.                                       int bApproxOK,

  1055.                                       double *pdfMin, double *pdfMax,

  1056.                                       double *pdfMean, double *pdfStdDev,

  1057.                                       GDALProgressFunc pfnProgress,

  1058.                                       void *pProgressData ) override;

  1059.     virtual CPLErr  GetHistogram( int nXSize, int nYSize,

  1060.                                   double dfMin, double dfMax,

  1061.                                   int nBuckets, GUIntBig * panHistogram,

  1062.                                   int bIncludeOutOfRange, int bApproxOK,

  1063.                                   GDALProgressFunc pfnProgress,

  1064.                                   void *pProgressData ) override;

  1065. 

  1066.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  1067.     virtual CPLErr XMLInit( CPLXMLNode *, const char *, void*,

  1068.                             std::map<CPLString, GDALDataset*>& ) override;

  1069.     virtual const char* GetType() override { return "ComplexSource"; }

  1070. 

  1071.     double  LookupValue( double dfInput );

  1072. 

  1073.     void    SetLinearScaling( double dfOffset, double dfScale );

  1074.     void    SetPowerScaling( double dfExponent,

  1075.                              double dfSrcMin,

  1076.                              double dfSrcMax,

  1077.                              double dfDstMin,

  1078.                              double dfDstMax );

  1079.     void    SetColorTableComponent( int nComponent );

  1080. 

  1081.     double         *m_padfLUTInputs;

  1082.     double         *m_padfLUTOutputs;

  1083.     int            m_nLUTItemCount;

  1084. };

  1085. 

  1086. /************************************************************************/

  1087. /*                           VRTFilteredSource                          */

  1088. /************************************************************************/

  1089. 

  1090. class VRTFilteredSource : public VRTComplexSource

  1091. {

  1092. private:

  1093.     int          IsTypeSupported( GDALDataType eTestType ) const;

  1094. 

  1095.     CPL_DISALLOW_COPY_ASSIGN(VRTFilteredSource)

  1096. 

  1097. protected:

  1098.     int          m_nSupportedTypesCount;

  1099.     GDALDataType m_aeSupportedTypes[20];

  1100. 

  1101.     int          m_nExtraEdgePixels;

  1102. 

  1103. public:

  1104.             VRTFilteredSource();

  1105.     virtual ~VRTFilteredSource();

  1106. 

  1107.     void    SetExtraEdgePixels( int );

  1108.     void    SetFilteringDataTypesSupported( int, GDALDataType * );

  1109. 

  1110.     virtual CPLErr  FilterData( int nXSize, int nYSize, GDALDataType eType,

  1111.                                 GByte *pabySrcData, GByte *pabyDstData ) = 0;

  1112. 

  1113.     virtual CPLErr  RasterIO( GDALDataType eBandDataType,

  1114.                               int nXOff, int nYOff, int nXSize, int nYSize,

  1115.                               void *pData, int nBufXSize, int nBufYSize,

  1116.                               GDALDataType eBufType,

  1117.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  1118.                               GDALRasterIOExtraArg* psExtraArg ) override;

  1119. };

  1120. 

  1121. /************************************************************************/

  1122. /*                       VRTKernelFilteredSource                        */

  1123. /************************************************************************/

  1124. 

  1125. class VRTKernelFilteredSource : public VRTFilteredSource

  1126. {

  1127.     CPL_DISALLOW_COPY_ASSIGN(VRTKernelFilteredSource)

  1128. 

  1129. protected:

  1130.     int     m_nKernelSize;

  1131. 

  1132.     bool    m_bSeparable;

  1133. 

  1134.     double  *m_padfKernelCoefs;

  1135. 

  1136.     int     m_bNormalized;

  1137. 

  1138. public:

  1139.             VRTKernelFilteredSource();

  1140.     virtual ~VRTKernelFilteredSource();

  1141. 

  1142.     virtual CPLErr  XMLInit( CPLXMLNode *psTree, const char *, void*,

  1143.                              std::map<CPLString, GDALDataset*>& ) override;

  1144.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  1145. 

  1146.     virtual CPLErr  FilterData( int nXSize, int nYSize, GDALDataType eType,

  1147.                                 GByte *pabySrcData, GByte *pabyDstData ) override;

  1148. 

  1149.     CPLErr          SetKernel( int nKernelSize, bool bSeparable, double *padfCoefs );

  1150.     void            SetNormalized( int );

  1151. };

  1152. 

  1153. /************************************************************************/

  1154. /*                       VRTAverageFilteredSource                       */

  1155. /************************************************************************/

  1156. 

  1157. class VRTAverageFilteredSource : public VRTKernelFilteredSource

  1158. {

  1159.     CPL_DISALLOW_COPY_ASSIGN(VRTAverageFilteredSource)

  1160. 

  1161. public:

  1162.             explicit VRTAverageFilteredSource( int nKernelSize );

  1163.     virtual ~VRTAverageFilteredSource();

  1164. 

  1165.     virtual CPLErr  XMLInit( CPLXMLNode *psTree, const char *, void*,

  1166.                              std::map<CPLString, GDALDataset*>& ) override;

  1167.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  1168. };

  1169. 

  1170. /************************************************************************/

  1171. /*                            VRTFuncSource                             */

  1172. /************************************************************************/

  1173. class VRTFuncSource : public VRTSource

  1174. {

  1175.     CPL_DISALLOW_COPY_ASSIGN(VRTFuncSource)

  1176. 

  1177. public:

  1178.             VRTFuncSource();

  1179.     virtual ~VRTFuncSource();

  1180. 

  1181.     virtual CPLErr  XMLInit( CPLXMLNode *, const char *, void*,

  1182.                              std::map<CPLString, GDALDataset*>& ) override { return CE_Failure; }

  1183.     virtual CPLXMLNode *SerializeToXML( const char *pszVRTPath ) override;

  1184. 

  1185.     virtual CPLErr  RasterIO( GDALDataType eBandDataType,

  1186.                               int nXOff, int nYOff, int nXSize, int nYSize,

  1187.                               void *pData, int nBufXSize, int nBufYSize,

  1188.                               GDALDataType eBufType,

  1189.                               GSpacing nPixelSpace, GSpacing nLineSpace,

  1190.                               GDALRasterIOExtraArg* psExtraArg ) override;

  1191. 

  1192.     virtual double GetMinimum( int nXSize, int nYSize, int *pbSuccess ) override;

  1193.     virtual double GetMaximum( int nXSize, int nYSize, int *pbSuccess ) override;

  1194.     virtual CPLErr ComputeRasterMinMax( int nXSize, int nYSize, int bApproxOK,

  1195.                                         double* adfMinMax ) override;

  1196.     virtual CPLErr ComputeStatistics( int nXSize, int nYSize,

  1197.                                       int bApproxOK,

  1198.                                       double *pdfMin, double *pdfMax,

  1199.                                       double *pdfMean, double *pdfStdDev,

  1200.                                       GDALProgressFunc pfnProgress,

  1201.                                       void *pProgressData ) override;

  1202.     virtual CPLErr  GetHistogram( int nXSize, int nYSize,

  1203.                                   double dfMin, double dfMax,

  1204.                                   int nBuckets, GUIntBig * panHistogram,

  1205.                                   int bIncludeOutOfRange, int bApproxOK,

  1206.                                   GDALProgressFunc pfnProgress,

  1207.                                   void *pProgressData ) override;

  1208. 

  1209.     VRTImageReadFunc    pfnReadFunc;

  1210.     void               *pCBData;

  1211.     GDALDataType        eType;

  1212. 

  1213.     float               fNoDataValue;

  1214. };

  1215. 

  1216. #endif /* #ifndef DOXYGEN_SKIP */

  1217. 

  1218. #endif /* ndef VIRTUALDATASET_H_INCLUDED */
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