ifdfilecontainer.h

00001 /*
00002  * libopenraw - ifdfilecontainer.h
00003  *
00004  * Copyright (C) 2005-2006 Hubert Figuiere
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Lesser General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2.1 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Lesser General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Lesser General Public
00017  * License along with this library; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  */
00020 
00029 #ifndef _IFDFILECONTAINER_H_
00030 #define _IFDFILECONTAINER_H_
00031 
00032 #include <vector>
00033 
00034 #include <libopenraw/consts.h>
00035 #include <libopenraw/types.h>
00036 
00037 #include "rawcontainer.h"
00038 #include "ifddir.h"
00039 #include "ifdentry.h"
00040 
00041 namespace OpenRaw {
00042     namespace Internals {
00043         
00044 
00045         class IFDFileContainer
00046             : public RawContainer
00047         {
00048         public:
00054             IFDFileContainer(IO::Stream *file, off_t offset);
00056             virtual ~IFDFileContainer();
00057 
00062             enum {
00063                 IFD_NONE = -1, 
00064                 IFD_EXIF = -2, 
00065                 IFD_GPS = -3,  
00066                 IFD_INTEROP = -4 
00067             };
00068 
00078             virtual EndianType isMagicHeader(const char *p, int len);
00079     
00086             IFDDir::Ref setDirectory(int dir);
00092             int countDirectories(void);
00096             std::vector<IFDDir::Ref> & directories();
00097 
00103             int currentDirectory();
00104 
00109             size_t getDirectoryDataSize();
00110 
00111 
00116             int lastError() const
00117                 {
00118                     return m_error;
00119                 }
00120 
00121         private:
00122             int m_error;
00123 
00124             IFDDir::Ref m_current_dir;
00125             std::vector<IFDDir::Ref> m_dirs;
00126 
00127             bool _locateDirs();
00128         };
00129 
00130     }
00131 }
00132 
00133 #endif

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