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gdal_alg_priv.h
1 /******************************************************************************
2 * $Id: gdal_alg_priv.h 36411 2016-11-21 22:03:48Z rouault $
3 *
4 * Project: GDAL Image Processing Algorithms
5 * Purpose: Prototypes and definitions for various GDAL based algorithms:
6 * private declarations.
7 * Author: Andrey Kiselev, dron@ak4719.spb.edu
8 *
9 ******************************************************************************
10 * Copyright (c) 2008, Andrey Kiselev <dron@ak4719.spb.edu>
11 * Copyright (c) 2010-2013, Even Rouault <even dot rouault at mines-paris dot org>
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a
14 * copy of this software and associated documentation files (the "Software"),
15 * to deal in the Software without restriction, including without limitation
16 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
17 * and/or sell copies of the Software, and to permit persons to whom the
18 * Software is furnished to do so, subject to the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included
21 * in all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
24 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
29 * DEALINGS IN THE SOFTWARE.
30 ****************************************************************************/
31
32 #ifndef GDAL_ALG_PRIV_H_INCLUDED
33 #define GDAL_ALG_PRIV_H_INCLUDED
34
35 #ifndef DOXYGEN_SKIP
36
37 #include "gdal_alg.h"
38
39 CPL_C_START
40
42 typedef enum { GBV_UserBurnValue = 0, GBV_Z = 1, GBV_M = 2
46 } GDALBurnValueSrc;
47
48 typedef enum {
49 GRMA_Replace = 0,
50 GRMA_Add = 1,
51 } GDALRasterMergeAlg;
52
53 typedef struct {
54 unsigned char * pabyChunkBuf;
55 int nXSize;
56 int nYSize;
57 int nBands;
58 GDALDataType eType;
59 double *padfBurnValue;
60 GDALBurnValueSrc eBurnValueSource;
61 GDALRasterMergeAlg eMergeAlg;
62 } GDALRasterizeInfo;
63
64 /************************************************************************/
65 /* Low level rasterizer API. */
66 /************************************************************************/
67
68 typedef void (*llScanlineFunc)( void *, int, int, int, double );
69 typedef void (*llPointFunc)( void *, int, int, double );
70
71 void GDALdllImagePoint( int nRasterXSize, int nRasterYSize,
72 int nPartCount, int *panPartSize,
73 double *padfX, double *padfY, double *padfVariant,
74 llPointFunc pfnPointFunc, void *pCBData );
75
76 void GDALdllImageLine( int nRasterXSize, int nRasterYSize,
77 int nPartCount, int *panPartSize,
78 double *padfX, double *padfY, double *padfVariant,
79 llPointFunc pfnPointFunc, void *pCBData );
80
81 void GDALdllImageLineAllTouched( int nRasterXSize, int nRasterYSize,
82 int nPartCount, int *panPartSize,
83 double *padfX, double *padfY,
84 double *padfVariant,
85 llPointFunc pfnPointFunc, void *pCBData );
86
87 void GDALdllImageFilledPolygon( int nRasterXSize, int nRasterYSize,
88 int nPartCount, int *panPartSize,
89 double *padfX, double *padfY,
90 double *padfVariant,
91 llScanlineFunc pfnScanlineFunc, void *pCBData );
92
93 CPL_C_END
94
95 /************************************************************************/
96 /* Polygon Enumerator */
97 /************************************************************************/
98
99 #define GP_NODATA_MARKER -51502112
100
101 template<class DataType, class EqualityTest> class GDALRasterPolygonEnumeratorT
102
103 {
104 private:
105 void MergePolygon( int nSrcId, int nDstId );
106 int NewPolygon( DataType nValue );
107
108 public: // these are intended to be readonly.
109
110 GInt32 *panPolyIdMap;
111 DataType *panPolyValue;
112
113 int nNextPolygonId;
114 int nPolyAlloc;
115
116 int nConnectedness;
117
118 public:
119 explicit GDALRasterPolygonEnumeratorT( int nConnectedness=4 );
120 ~GDALRasterPolygonEnumeratorT();
121
122 void ProcessLine( DataType *panLastLineVal, DataType *panThisLineVal,
123 GInt32 *panLastLineId, GInt32 *panThisLineId,
124 int nXSize );
125
126 void CompleteMerges();
127
128 void Clear();
129 };
130
131 struct IntEqualityTest
132 {
133 bool operator()(GInt32 a, GInt32 b) { return a == b; }
134 };
135
136 typedef GDALRasterPolygonEnumeratorT<GInt32, IntEqualityTest> GDALRasterPolygonEnumerator;
137
138 typedef void* (*GDALTransformDeserializeFunc)( CPLXMLNode *psTree );
139
140 void* GDALRegisterTransformDeserializer(const char* pszTransformName,
141 GDALTransformerFunc pfnTransformerFunc,
142 GDALTransformDeserializeFunc pfnDeserializeFunc);
143 void GDALUnregisterTransformDeserializer(void* pData);
144
145 void GDALCleanupTransformDeserializerMutex();
146
147 /* Transformer cloning */
148
149 void* GDALCreateTPSTransformerInt( int nGCPCount, const GDAL_GCP *pasGCPList,
150 int bReversed, char** papszOptions );
151
152 void CPL_DLL * GDALCloneTransformer( void *pTransformerArg );
153
154 /************************************************************************/
155 /* Color table related */
156 /************************************************************************/
157
158 // Definitions exists for T = GUInt32 and T = GUIntBig.
159 template<class T> int
160 GDALComputeMedianCutPCTInternal( GDALRasterBandH hRed,
161 GDALRasterBandH hGreen,
162 GDALRasterBandH hBlue,
163 GByte* pabyRedBand,
164 GByte* pabyGreenBand,
165 GByte* pabyBlueBand,
166 int (*pfnIncludePixel)(int,int,void*),
167 int nColors,
168 int nBits,
169 T* panHistogram,
170 GDALColorTableH hColorTable,
171 GDALProgressFunc pfnProgress,
172 void * pProgressArg );
173
174 int GDALDitherRGB2PCTInternal( GDALRasterBandH hRed,
175 GDALRasterBandH hGreen,
176 GDALRasterBandH hBlue,
177 GDALRasterBandH hTarget,
178 GDALColorTableH hColorTable,
179 int nBits,
180 GInt16* pasDynamicColorMap,
181 int bDither,
182 GDALProgressFunc pfnProgress,
183 void * pProgressArg );
184
185 #define PRIME_FOR_65536 98317
186
187 // See HashHistogram structure in gdalmediancut.cpp and ColorIndex structure in
188 // gdaldither.cpp 6 * sizeof(int) should be the size of the largest of both
189 // structures.
190 #define MEDIAN_CUT_AND_DITHER_BUFFER_SIZE_65536 (6 * sizeof(int) * PRIME_FOR_65536)
191
192 /************************************************************************/
193 /* Float comparison function. */
194 /************************************************************************/
195
202 #define MAX_ULPS 10
203
204 GBool GDALFloatEquals(float A, float B);
205
206 struct FloatEqualityTest
207 {
208 bool operator()(float a, float b) { return GDALFloatEquals(a,b) == TRUE; }
209 };
210
211 #endif /* #ifndef DOXYGEN_SKIP */
212
213 #endif /* ndef GDAL_ALG_PRIV_H_INCLUDED */
GDALDataType
GDALDataType
Definition: gdal.h:57
CPLXMLNode
Document node structure.
Definition: cpl_minixml.h:66
CPL_C_START
#define CPL_C_START
Macro to start a block of C symbols.
Definition: cpl_port.h:352
GBool
int GBool
Type for boolean values (alias to int)
Definition: cpl_port.h:215
GInt32
int GInt32
Int32 type.
Definition: cpl_port.h:197
GInt16
short GInt16
Int16 type.
Definition: cpl_port.h:203
GByte
unsigned char GByte
Unsigned byte type.
Definition: cpl_port.h:207
GDALRasterBandH
void * GDALRasterBandH
Opaque type used for the C bindings of the C++ GDALRasterBand class.
Definition: gdal.h:244
GDALTransformerFunc
int(* GDALTransformerFunc)(void *pTransformerArg, int bDstToSrc, int nPointCount, double *x, double *y, double *z, int *panSuccess)
Definition: gdal_alg.h:114
gdal_alg.h
Public (C callable) GDAL algorithm entry points, and definitions.
CPL_C_END
#define CPL_C_END
Macro to end a block of C symbols.
Definition: cpl_port.h:354
GDALColorTableH
void * GDALColorTableH
Opaque type used for the C bindings of the C++ GDALColorTable class.
Definition: gdal.h:250
GDAL_GCP
Ground Control Point.
Definition: gdal.h:514

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