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119 lines
4 KiB
C++
119 lines
4 KiB
C++
/******************************************************************************
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*
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* File : pgchip.h
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* Project: PGCHIP Driver
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* Purpose: Main header file for POSTGIS CHIP/GDAL Driver
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* Author: Benjamin Simon, noumayoss@gmail.com
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*
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******************************************************************************
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* Copyright (c) 2005, Benjamin Simon, noumayoss@gmail.com
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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******************************************************************************
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*
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* Revision 1.1 2005/08/29 bsimon
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* New
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*
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*/
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#include "gdal_priv.h"
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#include "libpq-fe.h"
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#include "liblwgeom.h"
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// External functions (what's again the reason for using explicit hex form ?)
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extern void pgch_deparse_hex(unsigned char in, unsigned char *out);
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extern void deparse_hex_string(unsigned char *strOut,char *strIn,int length);
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extern void parse_hex_string(unsigned char *strOut,char *strIn,int length);
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/* color types */
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#define PGCHIP_COLOR_TYPE_GRAY 0
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#define PGCHIP_COLOR_TYPE_PALETTE 1
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#define PGCHIP_COLOR_TYPE_RGB_ALPHA 4
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//pg_chip color struct
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typedef struct pgchip_color_nohex_struct
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{
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unsigned char red;
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unsigned char green;
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unsigned char blue;
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unsigned char alpha;
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} pgchip_color;
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/************************************************************************/
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/* ==================================================================== */
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/* PGCHIPDataset */
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/* ==================================================================== */
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/************************************************************************/
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class PGCHIPRasterBand;
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class PGCHIPDataset : public GDALDataset{
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friend class PGCHIPRasterBand;
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PGconn *hPGConn;
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char *pszTableName;
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char *pszDSName;
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char *pszProjection;
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CHIP *PGCHIP;
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int SRID;
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int nBitDepth;
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int nColorType; /* PGHIP_COLOR_TYPE_* */
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GDALColorTable *poColorTable;
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int bHaveNoData;
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double dfNoDataValue;
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double adfGeoTransform[6];
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int bGeoTransformValid;
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public:
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PGCHIPDataset();
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~PGCHIPDataset();
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static GDALDataset *Open( GDALOpenInfo * );
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static void printChipInfo(const CHIP& chip);
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CPLErr GetGeoTransform( double * padfTransform );
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const char *GetProjectionRef();
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};
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/************************************************************************/
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/* ==================================================================== */
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/* PGCHIPRasterBand */
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/* ==================================================================== */
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/************************************************************************/
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class PGCHIPRasterBand : public GDALRasterBand{
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friend class PGCHIPDataset;
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public:
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PGCHIPRasterBand( PGCHIPDataset *, int );
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virtual CPLErr IReadBlock( int, int, void * );
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virtual GDALColorInterp GetColorInterpretation();
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virtual GDALColorTable *GetColorTable();
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};
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