89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
/*
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* File: ximajas.h
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* Purpose: Jasper Image Class Loader and Writer
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*/
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/* ==========================================================
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* CxImageJAS (c) 12/Apr/2003 Davide Pizzolato - www.xdp.it
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* For conditions of distribution and use, see copyright notice in ximage.h
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*
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* based on JasPer Copyright (c) 2001-2003 Michael David Adams - All rights reserved.
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* ==========================================================
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*/
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#if !defined(__ximaJAS_h)
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#define __ximaJAS_h
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#include "ximage.h"
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#if CXIMAGE_SUPPORT_JASPER
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#ifdef _LINUX
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#include <jasper/jasper.h>
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#else
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#include "../jasper/include/jasper/jasper.h"
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#endif
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class CxImageJAS: public CxImage
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{
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public:
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CxImageJAS(): CxImage((uint32_t)0) {} // <vho> cast to uint32_t
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// bool Load(const TCHAR * imageFileName){ return CxImage::Load(imageFileName,0);}
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// bool Save(const TCHAR * imageFileName){ return CxImage::Save(imageFileName,0);}
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bool Decode(CxFile * hFile, uint32_t imagetype = 0);
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bool Decode(FILE *hFile, uint32_t imagetype = 0) { CxIOFile file(hFile); return Decode(&file,imagetype); }
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#if CXIMAGE_SUPPORT_ENCODE
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bool Encode(CxFile * hFile, uint32_t imagetype = 0);
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bool Encode(FILE *hFile, uint32_t imagetype = 0) { CxIOFile file(hFile); return Encode(&file,imagetype); }
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#endif // CXIMAGE_SUPPORT_ENCODE
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protected:
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class CxFileJas
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{
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public:
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CxFileJas(CxFile* pFile,jas_stream_t *stream)
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{
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if (stream->obj_) jas_free(stream->obj_);
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stream->obj_ = pFile;
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// <vho> - cannot set the stream->ops_->functions here,
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// because this overwrites a static structure in the Jasper library.
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// This structure is used by Jasper for internal operations too, e.g. tempfile.
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// However the ops_ pointer in the stream can be overwritten.
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//stream->ops_->close_ = JasClose;
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//stream->ops_->read_ = JasRead;
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//stream->ops_->seek_ = JasSeek;
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//stream->ops_->write_ = JasWrite;
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jas_stream_CxFile.close_ = JasClose;
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jas_stream_CxFile.read_ = JasRead;
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jas_stream_CxFile.seek_ = JasSeek;
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jas_stream_CxFile.write_ = JasWrite;
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stream->ops_ = &jas_stream_CxFile;
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// <vho> - end
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}
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static int32_t JasRead(jas_stream_obj_t *obj, char *buf, int32_t cnt)
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{ return ((CxFile*)obj)->Read(buf,1,cnt); }
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static int32_t JasWrite(jas_stream_obj_t *obj, char *buf, int32_t cnt)
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{ return ((CxFile*)obj)->Write(buf,1,cnt); }
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static long JasSeek(jas_stream_obj_t *obj, long offset, int32_t origin)
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{ return ((CxFile*)obj)->Seek(offset,origin); }
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static int32_t JasClose(jas_stream_obj_t * /*obj*/)
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{ return 1; }
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// <vho>
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private:
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jas_stream_ops_t jas_stream_CxFile;
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// <vho> - end
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};
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};
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#endif
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#endif
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