119 строки
4.1 KiB
C++
119 строки
4.1 KiB
C++
/******************************************************************************
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* $Id$
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*
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* Project: GIF Driver
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* Purpose: GIF Abstract Dataset
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* Author: Even Rouault <even dot rouault at spatialys.com>
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*
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****************************************************************************
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* Copyright (c) 2011-2013, Even Rouault <even dot rouault at spatialys.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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#ifndef GIFABSTRACTDATASET_H_INCLUDED
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#define GIFABSTRACTDATASET_H_INCLUDED
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#include "gdal_pam.h"
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CPL_C_START
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#include "gif_lib.h"
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CPL_C_END
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/************************************************************************/
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/* ==================================================================== */
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/* GIFAbstractDataset */
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/* ==================================================================== */
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/************************************************************************/
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class GIFAbstractDataset CPL_NON_FINAL : public GDALPamDataset
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{
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protected:
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friend class GIFAbstractRasterBand;
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VSILFILE *fp;
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GifFileType *hGifFile;
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int bGeoTransformValid;
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double adfGeoTransform[6];
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int nGCPCount;
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GDAL_GCP *pasGCPList;
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int bHasReadXMPMetadata;
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void CollectXMPMetadata();
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CPLString osWldFilename;
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void DetectGeoreferencing(GDALOpenInfo *poOpenInfo);
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public:
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GIFAbstractDataset();
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~GIFAbstractDataset() override;
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CPLErr GetGeoTransform(double *) override;
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int GetGCPCount() override;
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const GDAL_GCP *GetGCPs() override;
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char **GetMetadataDomainList() override;
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char **GetMetadata(const char *pszDomain = "") override;
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char **GetFileList() override;
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static int Identify(GDALOpenInfo *);
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static GifFileType *myDGifOpen(void *userPtr, InputFunc readFunc);
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static int myDGifCloseFile(GifFileType *hGifFile);
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static int myEGifCloseFile(GifFileType *hGifFile);
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static int ReadFunc(GifFileType *psGFile, GifByteType *pabyBuffer,
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int nBytesToRead);
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static GifRecordType FindFirstImage(GifFileType *hGifFile);
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};
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/************************************************************************/
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/* ==================================================================== */
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/* GIFAbstractRasterBand */
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/* ==================================================================== */
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/************************************************************************/
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class GIFAbstractRasterBand CPL_NON_FINAL : public GDALPamRasterBand
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{
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protected:
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SavedImage *psImage;
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int *panInterlaceMap;
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GDALColorTable *poColorTable;
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int nTransparentColor;
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public:
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GIFAbstractRasterBand(GIFAbstractDataset *poDS, int nBand,
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SavedImage *psSavedImage, int nBackground,
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int bAdvertiseInterlacedMDI);
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~GIFAbstractRasterBand() override;
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double GetNoDataValue(int *pbSuccess = nullptr) override;
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GDALColorInterp GetColorInterpretation() override;
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GDALColorTable *GetColorTable() override;
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};
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#endif
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