[wxWidgets.git] / src / tiff / contrib / stream / tiffstream.h

// 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:
 */