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