/******************************************************************************

 *

 * Project:  Memory Array Translator

 * Purpose:  Declaration of MEMDataset, and MEMRasterBand.

 * Author:   Frank Warmerdam, warmerdam@pobox.com

 *

 ******************************************************************************

 * Copyright (c) 2000, Frank Warmerdam

 *

 * SPDX-License-Identifier: MIT

 ****************************************************************************/

#ifndef MEMDATASET_H_INCLUDED

#define MEMDATASET_H_INCLUDED

#include "gdal_pam.h"

#include "gdal_priv.h"

#include "gdal_rat.h"

#include "ogrsf_frmts.h"

#include <map>

#include <memory>

CPL_C_START

void CPL_DLL GDALRegister_MEM();

/* Caution: if changing this prototype, also change in

   swig/include/gdal_python.i where it is redefined */

GDALRasterBandH CPL_DLL MEMCreateRasterBand(GDALDataset *, int, GByte *,

                                            GDALDataType, int, int, int);

GDALRasterBandH CPL_DLL MEMCreateRasterBandEx(GDALDataset *, int, GByte *,

                                              GDALDataType, GSpacing, GSpacing,

                                              int);

CPL_C_END

/************************************************************************/

/*                            MEMDataset                                */

/************************************************************************/

class MEMRasterBand;

class OGRMemLayer;

class CPL_DLL MEMDataset CPL_NON_FINAL : public GDALDataset

{

    CPL_DISALLOW_COPY_ASSIGN(MEMDataset)

    friend class MEMRasterBand;

    int bGeoTransformSet;

    GDALGeoTransform m_gt{};

    OGRSpatialReference m_oSRS{};

    std::vector<gdal::GCP> m_aoGCPs{};

    OGRSpatialReference m_oGCPSRS{};

    using GDALDatasetRefCountedPtr =

        std::unique_ptr<GDALDataset, GDALDatasetUniquePtrReleaser>;

    std::vector<GDALDatasetRefCountedPtr> m_apoOverviewDS{};

    struct Private;

    std::unique_ptr<Private> m_poPrivate;

    std::vector<std::unique_ptr<OGRMemLayer>> m_apoLayers{};

#if 0

  protected:

    virtual int                 EnterReadWrite(GDALRWFlag eRWFlag);

    virtual void                LeaveReadWrite();

#endif

    friend void GDALRegister_MEM();

    // cppcheck-suppress unusedPrivateFunction

    static GDALDataset *CreateBase(const char *pszFilename, int nXSize,

                                   int nYSize, int nBands, GDALDataType eType,

                                   char **papszParamList);

  protected:

    bool CanBeCloned(int nScopeFlags, bool bCanShareState) const override;

    std::unique_ptr<GDALDataset> Clone(int nScopeFlags,

                                       bool bCanShareState) const override;

  public:

    MEMDataset();

    ~MEMDataset() override;

    CPLErr Close() override;

    const OGRSpatialReference *GetSpatialRef() const override;

    const OGRSpatialReference *GetSpatialRefRasterOnly() const override;

    CPLErr SetSpatialRef(const OGRSpatialReference *poSRS) override;

    CPLErr GetGeoTransform(GDALGeoTransform &gt) const override;

    CPLErr SetGeoTransform(const GDALGeoTransform &gt) override;

    void *GetInternalHandle(const char *) override;

    int GetGCPCount() override;

    const OGRSpatialReference *GetGCPSpatialRef() const override;

    const GDAL_GCP *GetGCPs() override;

    CPLErr SetGCPs(int nGCPCount, const GDAL_GCP *pasGCPList,

                   const OGRSpatialReference *poSRS) override;

    virtual CPLErr AddBand(GDALDataType eType,

                           char **papszOptions = nullptr) override;

    CPLErr IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize,

                     int nYSize, void *pData, int nBufXSize, int nBufYSize,

                     GDALDataType eBufType, int nBandCount,

                     BANDMAP_TYPE panBandMap, GSpacing nPixelSpaceBuf,

                     GSpacing nLineSpaceBuf, GSpacing nBandSpaceBuf,

                     GDALRasterIOExtraArg *psExtraArg) override;

    CPLErr IBuildOverviews(const char *pszResampling, int nOverviews,

                           const int *panOverviewList, int nListBands,

                           const int *panBandList, GDALProgressFunc pfnProgress,

                           void *pProgressData,

                           CSLConstList papszOptions) override;

    CPLErr CreateMaskBand(int nFlagsIn) override;

    std::shared_ptr<GDALGroup> GetRootGroup() const override;

    void AddMEMBand(GDALRasterBandH hMEMBand);

    static GDALDataset *Open(GDALOpenInfo *);

    static MEMDataset *Create(const char *pszFilename, int nXSize, int nYSize,

                              int nBands, GDALDataType eType,

                              char **papszParamList);

    static GDALDataset *

    CreateMultiDimensional(const char *pszFilename,

                           CSLConstList papszRootGroupOptions,

                           CSLConstList papszOptions);

    // Vector capabilities

    int GetLayerCount() const override

    {

        return static_cast<int>(m_apoLayers.size());

    }

    const OGRLayer *GetLayer(int) const override;

    using GDALDataset::CreateLayer;

    OGRMemLayer *CreateLayer(const OGRFeatureDefn &oDefn,

                             CSLConstList papszOptions);

    OGRLayer *ICreateLayer(const char *pszName,

                           const OGRGeomFieldDefn *poGeomFieldDefn,

                           CSLConstList papszOptions) override;

    OGRErr DeleteLayer(int iLayer) override;

    int TestCapability(const char *) const override;

    OGRLayer *ExecuteSQL(const char *pszStatement, OGRGeometry *poSpatialFilter,

                         const char *pszDialect) override;

    bool AddFieldDomain(std::unique_ptr<OGRFieldDomain> &&domain,

                        std::string &failureReason) override;

    bool DeleteFieldDomain(const std::string &name,

                           std::string &failureReason) override;

    bool UpdateFieldDomain(std::unique_ptr<OGRFieldDomain> &&domain,

                           std::string &failureReason) override;

};

/************************************************************************/

/*                            MEMRasterBand                             */

/************************************************************************/

class CPL_DLL MEMRasterBand CPL_NON_FINAL : public GDALPamRasterBand

{

  private:

    CPL_DISALLOW_COPY_ASSIGN(MEMRasterBand)

  protected:

    friend class MEMDataset;

    GByte *pabyData;

    GSpacing nPixelOffset;

    GSpacing nLineOffset;

    int bOwnData;

    bool m_bIsMask = false;

    MEMRasterBand(GByte *pabyDataIn, GDALDataType eTypeIn, int nXSizeIn,

                  int nYSizeIn, bool bOwnDataIn);

  public:

    MEMRasterBand(GDALDataset *poDS, int nBand, GByte *pabyData,

                  GDALDataType eType, GSpacing nPixelOffset,

                  GSpacing nLineOffset, int bAssumeOwnership,

                  const char *pszPixelType = nullptr);

    ~MEMRasterBand() override;

    CPLErr IReadBlock(int, int, void *) override;

    CPLErr IWriteBlock(int, int, void *) override;

    CPLErr IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff, int nXSize,

                     int nYSize, void *pData, int nBufXSize, int nBufYSize,

                     GDALDataType eBufType, GSpacing nPixelSpaceBuf,

                     GSpacing nLineSpaceBuf,

                     GDALRasterIOExtraArg *psExtraArg) override;

    int GetOverviewCount() override;

    GDALRasterBand *GetOverview(int) override;

    CPLErr CreateMaskBand(int nFlagsIn) override;

    bool IsMaskBand() const override;

    // Allow access to MEM driver's private internal memory buffer.

    GByte *GetData() const

    {

        return (pabyData);

    }

};

/************************************************************************/

/*                             OGRMemLayer                              */

/************************************************************************/

class IOGRMemLayerFeatureIterator;

class CPL_DLL OGRMemLayer CPL_NON_FINAL : public OGRLayer

{

    CPL_DISALLOW_COPY_ASSIGN(OGRMemLayer)

    typedef std::map<GIntBig, std::unique_ptr<OGRFeature>> FeatureMap;

    typedef FeatureMap::iterator FeatureIterator;

    OGRFeatureDefn *m_poFeatureDefn = nullptr;

    GIntBig m_nFeatureCount = 0;

    GIntBig m_iNextReadFID = 0;

    GIntBig m_nMaxFeatureCount = 0;  // Max size of papoFeatures.

    OGRFeature **m_papoFeatures = nullptr;

    bool m_bHasHoles = false;

    FeatureMap m_oMapFeatures{};

    FeatureIterator m_oMapFeaturesIter{};

    GIntBig m_iNextCreateFID = 0;

    bool m_bUpdatable = true;

    bool m_bAdvertizeUTF8 = false;

    bool m_bUpdated = false;

    std::string m_osFIDColumn{};

    GDALDataset *m_poDS{};

    // Only use it in the lifetime of a function where the list of features

    // doesn't change.

    IOGRMemLayerFeatureIterator *GetIterator();

  protected:

    OGRFeature *GetFeatureRef(GIntBig nFeatureId);

  public:

    // Clone poSRS if not nullptr

    OGRMemLayer(const char *pszName, const OGRSpatialReference *poSRS,

                OGRwkbGeometryType eGeomType);

    explicit OGRMemLayer(const OGRFeatureDefn &oFeatureDefn);

    ~OGRMemLayer() override;

    void ResetReading() override;

    OGRFeature *GetNextFeature() override;

    OGRErr SetNextByIndex(GIntBig nIndex) override;

    OGRFeature *GetFeature(GIntBig nFeatureId) override;

    OGRErr ISetFeature(OGRFeature *poFeature) override;

    OGRErr ICreateFeature(OGRFeature *poFeature) override;

    OGRErr IUpsertFeature(OGRFeature *poFeature) override;

    OGRErr IUpdateFeature(OGRFeature *poFeature, int nUpdatedFieldsCount,

                          const int *panUpdatedFieldsIdx,

                          int nUpdatedGeomFieldsCount,

                          const int *panUpdatedGeomFieldsIdx,

                          bool bUpdateStyleString) override;

    OGRErr DeleteFeature(GIntBig nFID) override;

    using OGRLayer::GetLayerDefn;

    const OGRFeatureDefn *GetLayerDefn() const override

    {

        return m_poFeatureDefn;

    }

    GIntBig GetFeatureCount(int) override;

    virtual OGRErr CreateField(const OGRFieldDefn *poField,

                               int bApproxOK = TRUE) override;

    OGRErr DeleteField(int iField) override;

    OGRErr ReorderFields(int *panMap) override;

    virtual OGRErr AlterFieldDefn(int iField, OGRFieldDefn *poNewFieldDefn,

                                  int nFlags) override;

    virtual OGRErr

    AlterGeomFieldDefn(int iGeomField,

                       const OGRGeomFieldDefn *poNewGeomFieldDefn,

                       int nFlagsIn) override;

    virtual OGRErr CreateGeomField(const OGRGeomFieldDefn *poGeomField,

                                   int bApproxOK = TRUE) override;

    int TestCapability(const char *) const override;

    const char *GetFIDColumn() const override

    {

        return m_osFIDColumn.c_str();

    }

    bool IsUpdatable() const

    {

        return m_bUpdatable;

    }

    void SetUpdatable(bool bUpdatableIn)

    {

        m_bUpdatable = bUpdatableIn;

    }

    void SetAdvertizeUTF8(bool bAdvertizeUTF8In)

    {

        m_bAdvertizeUTF8 = bAdvertizeUTF8In;

    }

    void SetFIDColumn(const char *pszFIDColumn)

    {

        m_osFIDColumn = pszFIDColumn;

    }

    bool HasBeenUpdated() const

    {

        return m_bUpdated;

    }

    void SetUpdated(bool bUpdated)

    {

        m_bUpdated = bUpdated;

    }

    GIntBig GetNextReadFID()

    {

        return m_iNextReadFID;

    }

    void SetDataset(GDALDataset *poDS)

    {

        m_poDS = poDS;

    }

    GDALDataset *GetDataset() override

    {

        return m_poDS;

    }

};

#endif /* ndef MEMDATASET_H_INCLUDED */