Tiff.hpp

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/*
    libglim: a C++ Free library render images using OpenGL
    Copyright (C) 2002 Nestal Wan

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License
    as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    General Public License for more details.

    You should have received a copy of the GNU General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
#ifndef __PICINFO_TIFF_HEADER_INCLUDED__
#define __PICINFO_TIFF_HEADER_INCLUDED__

#ifndef __PICINFO_IEXIF_FILE_HEADER_INCLUDED__
#include "IExifFile.hpp"
#endif

#ifndef __PICINFO_EXIF_ENTRY_HEADER_INCLUDED__
#include "ExifEntry.hpp"
#endif

#ifndef __PICINFO_CSTDINT_HEADER_INCLUDED__
#include "cstdint.hpp"
#endif

#include <vector>

namespace picinfo {

class CStdioFile ;

struct TagSpace ;
extern const TagSpace exif_tspace ;

class CTiff : public IExifFile
{
private :
    CStdioFile  *m_file ;
    
    const long  m_start_offset ;

    int         m_endian ;

    std::vector<CExifEntry> m_entries ;

public :
    CTiff( CStdioFile *file ) ;

    iterator find( uint16_t tag,
                   const TagSpace& tspace = exif_tspace ) const ;

    iterator begin( ) const ;
    iterator end( ) const ;

    void Read( long offset, std::size_t size, void *data ) ;
    
    int Endian( ) const ;

private :
    long ReadIFD( std::vector<CExifEntry>& entries, long offset ) ;
} ;

} // end of namespace

#endif

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