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/* This file is -*-C++-*-
------------------------------------------------------------------------------
MetaCam - Extract EXIF information from digital camera files, with
support for Vendor specific blocks.
Copyright (C) 2000 Daniel Stephens (daniel@cheeseplant.org)
This program 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 program 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 program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
------------------------------------------------------------------------------
$Id: filetiff.h,v 1.2 2002/09/02 19:20:01 daniel Exp $
*/
#ifndef FILETIFF_H_INCLUDED
#define FILETIFF_H_INCLUDED
#include <iostream>
#include "metatiff.h"
class _FileTIFF;
// class _FileIFD;
// class _FileIFDEntry;
// class _FileTIFFDataSource;
class _FileTIFF : public _TIFFDataSource
{
friend class _FileIFD;
friend class _FileIFDEntry;
friend class _FileTIFFDataSource;
private:
istream &is;
unsigned long global_offset;
bool bigendian;
bool good;
protected:
virtual void seek(unsigned long ofs);
virtual unsigned long tell() const { return streamoff(is.tellg())-global_offset; }
virtual size_t getData(unsigned char *buf, size_t bytes);
virtual unsigned char getUByte();
virtual unsigned short getUShort();
virtual unsigned long getULong();
virtual signed char getSByte();
virtual signed short getSShort();
virtual signed long getSLong();
virtual bool bigEndian() const;
unsigned long firstIFDOffset() {
seek(4);
return getULong();
}
public:
_FileTIFF(istream &i, unsigned long ofs=0);
virtual ~_FileTIFF();
virtual IFD getIFD();
virtual IFD getIFD(unsigned long ofs);
virtual bool isGood() const;
};
#endif /* FILETIFF_H_INCLUDED */
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