libopenraw
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00001 /* 00002 * libopenraw - ifddir.h 00003 * 00004 * Copyright (C) 2006-2007 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 License 00008 * as published by the Free Software Foundation, either version 3 of 00009 * 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, see 00018 * <http://www.gnu.org/licenses/>. 00019 */ 00020 00021 00022 #ifndef _OPENRAW_INTERNALS_IFDDIR_H 00023 #define _OPENRAW_INTERNALS_IFDDIR_H 00024 00025 #include <map> 00026 00027 #include <boost/config.hpp> 00028 #include <boost/shared_ptr.hpp> 00029 #include "ifdentry.h" 00030 #include "trace.h" 00031 00032 namespace OpenRaw { 00033 namespace Internals { 00034 00035 class IFDFileContainer; 00036 00037 class IFDDir 00038 { 00039 public: 00040 typedef boost::shared_ptr<IFDDir> Ref; 00041 typedef std::vector<Ref> RefVec; 00042 struct isPrimary 00043 { 00044 bool operator()(const Ref &dir); 00045 }; 00046 struct isThumbnail 00047 { 00048 bool operator()(const Ref &dir); 00049 }; 00050 00051 IFDDir(off_t _offset, IFDFileContainer & _container); 00052 virtual ~IFDDir(); 00053 00055 off_t offset() const 00056 { 00057 return m_offset; 00058 } 00059 00061 bool load(); 00063 int numTags() 00064 { 00065 return m_entries.size(); 00066 } 00067 IFDEntry::Ref getEntry(uint16_t id) const ; 00068 00074 template <typename T> 00075 bool getValue(uint16_t id, T &v) const 00076 { 00077 bool success = false; 00078 IFDEntry::Ref e = getEntry(id); 00079 if (e != NULL) { 00080 try { 00081 v = IFDTypeTrait<T>::get(*e); 00082 success = true; 00083 } 00084 catch(const std::exception & ex) { 00085 Debug::Trace(ERROR) << "Exception raised " << ex.what() 00086 << " fetch value for " << id << "\n"; 00087 } 00088 } 00089 return success; 00090 } 00091 00100 bool getIntegerValue(uint16_t id, uint32_t &v); 00101 00105 off_t nextIFD(); 00106 00110 Ref getSubIFD(uint32_t idx = 0) const; 00115 bool getSubIFDs(std::vector<IFDDir::Ref> & ifds); 00116 00120 Ref getExifIFD(); 00121 private: 00122 off_t m_offset; 00123 IFDFileContainer & m_container; 00124 std::map<uint16_t, IFDEntry::Ref> m_entries; 00125 }; 00126 00127 00128 } 00129 } 00130 00131 00132 #endif 00133