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// tiff stream interface class definition
#ifndef _TIFF_STREAM_H_
#define _TIFF_STREAM_H_
#include <iostream.h>
#include "tiffio.h"
class TiffStream {
public:
// ctor/dtor
TiffStream();
~TiffStream();
public:
enum SeekDir {
beg,
cur,
end,
};
public:
// factory methods
TIFF* makeFileStream(iostream* str);
TIFF* makeFileStream(istream* str);
TIFF* makeFileStream(ostream* str);
public:
// tiff client methods
static tsize_t read(thandle_t fd, tdata_t buf, tsize_t size);
static tsize_t write(thandle_t fd, tdata_t buf, tsize_t size);
static toff_t seek(thandle_t fd, toff_t offset, int origin);
static toff_t size(thandle_t fd);
static int close(thandle_t fd);
static int map(thandle_t fd, tdata_t* phase, toff_t* psize);
static void unmap(thandle_t fd, tdata_t base, tsize_t size);
public:
// query method
TIFF* getTiffHandle() const { return m_tif; }
unsigned int getStreamLength() { return m_streamLength; }
private:
// internal methods
unsigned int getSize(thandle_t fd);
unsigned int tell(thandle_t fd);
bool seekInt(thandle_t fd, unsigned int offset, int origin);
bool isOpen(thandle_t fd);
private:
thandle_t m_this;
TIFF* m_tif;
static const char* m_name;
istream* m_inStream;
ostream* m_outStream;
iostream* m_ioStream;
int m_streamLength;
};
#endif // _TIFF_STREAM_H_
/*
* Local Variables:
* mode: c++
* c-basic-offset: 8
* fill-column: 78
* End:
*/
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