// 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:

*/