Line data Source code
1 : /******************************************************************************
2 : * $Id$
3 : *
4 : * Project: Memory Array Translator
5 : * Purpose: Declaration of MEMDataset, and MEMRasterBand.
6 : * Author: Frank Warmerdam, warmerdam@pobox.com
7 : *
8 : ******************************************************************************
9 : * Copyright (c) 2000, Frank Warmerdam
10 : *
11 : * Permission is hereby granted, free of charge, to any person obtaining a
12 : * copy of this software and associated documentation files (the "Software"),
13 : * to deal in the Software without restriction, including without limitation
14 : * the rights to use, copy, modify, merge, publish, distribute, sublicense,
15 : * and/or sell copies of the Software, and to permit persons to whom the
16 : * Software is furnished to do so, subject to the following conditions:
17 : *
18 : * The above copyright notice and this permission notice shall be included
19 : * in all copies or substantial portions of the Software.
20 : *
21 : * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
22 : * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
23 : * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
24 : * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
25 : * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
26 : * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
27 : * DEALINGS IN THE SOFTWARE.
28 : ****************************************************************************/
29 :
30 : #ifndef MEMDATASET_H_INCLUDED
31 : #define MEMDATASET_H_INCLUDED
32 :
33 : #include "gdal_pam.h"
34 : #include "gdal_priv.h"
35 : #include "gdal_rat.h"
36 :
37 : #include <memory>
38 :
39 : CPL_C_START
40 : /* Caution: if changing this prototype, also change in
41 : swig/include/gdal_python.i where it is redefined */
42 : GDALRasterBandH CPL_DLL MEMCreateRasterBand(GDALDataset *, int, GByte *,
43 : GDALDataType, int, int, int);
44 : GDALRasterBandH CPL_DLL MEMCreateRasterBandEx(GDALDataset *, int, GByte *,
45 : GDALDataType, GSpacing, GSpacing,
46 : int);
47 : CPL_C_END
48 :
49 : /************************************************************************/
50 : /* MEMDataset */
51 : /************************************************************************/
52 :
53 : class MEMRasterBand;
54 :
55 : class CPL_DLL MEMDataset CPL_NON_FINAL : public GDALDataset
56 : {
57 : CPL_DISALLOW_COPY_ASSIGN(MEMDataset)
58 :
59 : friend class MEMRasterBand;
60 :
61 : int bGeoTransformSet;
62 : double adfGeoTransform[6];
63 :
64 : OGRSpatialReference m_oSRS{};
65 :
66 : std::vector<gdal::GCP> m_aoGCPs{};
67 : OGRSpatialReference m_oGCPSRS{};
68 :
69 : int m_nOverviewDSCount;
70 : GDALDataset **m_papoOverviewDS;
71 :
72 : struct Private;
73 : std::unique_ptr<Private> m_poPrivate;
74 :
75 : #if 0
76 : protected:
77 : virtual int EnterReadWrite(GDALRWFlag eRWFlag);
78 : virtual void LeaveReadWrite();
79 : #endif
80 :
81 : friend void GDALRegister_MEM();
82 :
83 : // cppcheck-suppress unusedPrivateFunction
84 : static GDALDataset *CreateBase(const char *pszFilename, int nXSize,
85 : int nYSize, int nBands, GDALDataType eType,
86 : char **papszParamList);
87 :
88 : public:
89 : MEMDataset();
90 : virtual ~MEMDataset();
91 :
92 : const OGRSpatialReference *GetSpatialRef() const override;
93 : CPLErr SetSpatialRef(const OGRSpatialReference *poSRS) override;
94 :
95 : virtual CPLErr GetGeoTransform(double *) override;
96 : virtual CPLErr SetGeoTransform(double *) override;
97 :
98 : virtual void *GetInternalHandle(const char *) override;
99 :
100 : virtual int GetGCPCount() override;
101 : const OGRSpatialReference *GetGCPSpatialRef() const override;
102 : virtual const GDAL_GCP *GetGCPs() override;
103 : CPLErr SetGCPs(int nGCPCount, const GDAL_GCP *pasGCPList,
104 : const OGRSpatialReference *poSRS) override;
105 : virtual CPLErr AddBand(GDALDataType eType,
106 : char **papszOptions = nullptr) override;
107 : virtual CPLErr IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff,
108 : int nXSize, int nYSize, void *pData, int nBufXSize,
109 : int nBufYSize, GDALDataType eBufType,
110 : int nBandCount, int *panBandMap,
111 : GSpacing nPixelSpaceBuf, GSpacing nLineSpaceBuf,
112 : GSpacing nBandSpaceBuf,
113 : GDALRasterIOExtraArg *psExtraArg) override;
114 : virtual CPLErr IBuildOverviews(const char *pszResampling, int nOverviews,
115 : const int *panOverviewList, int nListBands,
116 : const int *panBandList,
117 : GDALProgressFunc pfnProgress,
118 : void *pProgressData,
119 : CSLConstList papszOptions) override;
120 :
121 : virtual CPLErr CreateMaskBand(int nFlagsIn) override;
122 :
123 : std::shared_ptr<GDALGroup> GetRootGroup() const override;
124 :
125 : void AddMEMBand(GDALRasterBandH hMEMBand);
126 :
127 : static GDALDataset *Open(GDALOpenInfo *);
128 : static MEMDataset *Create(const char *pszFilename, int nXSize, int nYSize,
129 : int nBands, GDALDataType eType,
130 : char **papszParamList);
131 : static GDALDataset *
132 : CreateMultiDimensional(const char *pszFilename,
133 : CSLConstList papszRootGroupOptions,
134 : CSLConstList papszOptions);
135 : };
136 :
137 : /************************************************************************/
138 : /* MEMRasterBand */
139 : /************************************************************************/
140 :
141 : class CPL_DLL MEMRasterBand CPL_NON_FINAL : public GDALPamRasterBand
142 : {
143 : private:
144 : MEMRasterBand(GByte *pabyDataIn, GDALDataType eTypeIn, int nXSizeIn,
145 : int nYSizeIn);
146 :
147 : CPL_DISALLOW_COPY_ASSIGN(MEMRasterBand)
148 :
149 : protected:
150 : friend class MEMDataset;
151 :
152 : GByte *pabyData;
153 : GSpacing nPixelOffset;
154 : GSpacing nLineOffset;
155 : int bOwnData;
156 :
157 : bool m_bIsMask = false;
158 :
159 : public:
160 : MEMRasterBand(GDALDataset *poDS, int nBand, GByte *pabyData,
161 : GDALDataType eType, GSpacing nPixelOffset,
162 : GSpacing nLineOffset, int bAssumeOwnership,
163 : const char *pszPixelType = nullptr);
164 : virtual ~MEMRasterBand();
165 :
166 : virtual CPLErr IReadBlock(int, int, void *) override;
167 : virtual CPLErr IWriteBlock(int, int, void *) override;
168 : virtual CPLErr IRasterIO(GDALRWFlag eRWFlag, int nXOff, int nYOff,
169 : int nXSize, int nYSize, void *pData, int nBufXSize,
170 : int nBufYSize, GDALDataType eBufType,
171 : GSpacing nPixelSpaceBuf, GSpacing nLineSpaceBuf,
172 : GDALRasterIOExtraArg *psExtraArg) override;
173 :
174 : virtual int GetOverviewCount() override;
175 : virtual GDALRasterBand *GetOverview(int) override;
176 :
177 : virtual CPLErr CreateMaskBand(int nFlagsIn) override;
178 : virtual bool IsMaskBand() const override;
179 :
180 : // Allow access to MEM driver's private internal memory buffer.
181 92 : GByte *GetData() const
182 : {
183 92 : return (pabyData);
184 : }
185 : };
186 :
187 : #endif /* ndef MEMDATASET_H_INCLUDED */
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