1 /*=========================================================================
4 Module: $RCSfile: gdcmDocEntry.h,v $
6 Date: $Date: 2007/05/23 14:18:09 $
7 Version: $Revision: 1.67 $
9 Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
10 l'Image). All rights reserved. See Doc/License.txt or
11 http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details.
13 This software is distributed WITHOUT ANY WARRANTY; without even
14 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 PURPOSE. See the above copyright notices for more information.
17 =========================================================================*/
19 #ifndef GDCMDOCENTRY_H
20 #define GDCMDOCENTRY_H
22 #include "gdcmRefCounter.h"
23 #include "gdcmDictEntry.h"
28 namespace GDCM_NAME_SPACE
33 //-----------------------------------------------------------------------------
35 * \brief The dicom header of a Dicom file contains a set of such entries
36 * (when successfuly parsed against a given Dicom dictionary)
38 class GDCM_EXPORT DocEntry : public RefCounter
40 gdcmTypeMacro(DocEntry);
43 virtual void Print (std::ostream &os = std::cout, std::string const &indent = "");
44 virtual void WriteContent(std::ofstream *fp, FileType filetype);
46 /// \brief Gets the DicEntry of the current Dicom entry
47 /// @return The DicEntry of the current Dicom entry
48 DictEntry * GetDictEntry() { return DicomDict; }
50 /// Returns the Dicom Group number of the current Dicom entry
51 uint16_t const &GetGroup() const { return Key[0]; }
52 //const uint16_t &GetGroup() const { return DicomDict->GetGroup(); }
54 /// Returns the Dicom Element number of the current Dicom entry
55 uint16_t const &GetElement() const { return Key[1];}
56 //const uint16_t &GetElement() const { return DicomDict->GetElement();}
58 /// Returns the 'key' of the current Dicom entry
59 TagKey const &GetKey() const { return Key; }
60 //TagKey GetKey() const { return DicomDict->GetKey(); }
62 /// \brief Returns the 'Name' '(e.g. "Patient's Name") found in the Dicom
63 /// Dictionnary of the current Dicom Header Entry
64 std::string const &GetName();
66 /// \brief Returns the 'Value Representation' (e.g. "PN" : Person Name,
67 /// "SL" : Signed Long), found in the Dicom header or in the Dicom
68 /// Dictionnary, of the current Dicom entry
69 VRKey const &GetVR() const { return VR; }
70 //VRKey const &GetVR() const { return DicomDict->GetVR(); }
72 /// \brief Returns the 'Value Multiplicity' (e.g. "1", "6", "1-n", "3-n"),
73 /// found in the Dicom entry or in the Dicom Dictionnary
74 /// of the current Dicom entry
75 std::string const &GetVM();
77 /// Sets the 'Value Multiplicity' of the current Dicom entry
78 //void SetVM( TagName const &v) { DicomDict->SetVM(v); }
79 void SetVM( TagName &) { std::cout << "-----------------FIXME : SetVM "; }
81 /// \brief Returns offset (since the beginning of the file, including
82 /// the File Preamble, if any) of the value of the current Dicom entry
83 /// \warning offset of the *value*, not of the Dicom entry
84 const size_t &GetOffset() const { return Offset; }
86 /// \brief Sets only 'Read Length' (*not* 'Usable Length') of the current
88 void SetReadLength(uint32_t l) { ReadLength = l; }
89 /// \brief Returns the 'read length' of the current Dicom entry
90 /// \warning this value is the one stored in the Dicom header but not
91 /// mandatoryly the one thats's used (in case of SQ, or delimiters,
92 /// the usable length is set to zero)
93 const uint32_t &GetReadLength() const { return ReadLength; }
95 /// \brief Sets both 'Read Length' and 'Usable Length' of the current
97 virtual void SetLength(uint32_t l) { Length = l; }
98 /// \brief Returns the actual value length of the current Dicom entry
99 /// \warning this value is not *always* the one stored in the Dicom header
100 /// in case of well known bugs
101 const uint32_t &GetLength() const { return Length; }
103 uint32_t GetFullLength();
104 virtual uint32_t ComputeFullLength() = 0;
106 // The following members, for internal use only !
108 /// \brief Sets the offset of the Dicom entry
109 /// \warning use with caution !
110 /// @param of offset to be set
111 void SetOffset(size_t of) { Offset = of; }
113 /// Sets to TRUE the ImplicitVr flag of the current Dicom entry
114 void SetImplicitVR() { ImplicitVR = true; }
116 /// Sets the 'Value Representation' of the current Dicom entry
117 /// @param vr VR to be set
118 void SetVR( VRKey const &vr) { VR = vr; }
120 /// Sets the 'Value Representation' of the current Dicom entry
121 /// @param key TagKey to be set
122 void SetTag( TagKey const &key) { Key = key; }
124 // -----------end of members to be used with caution
126 /// \brief Tells us if the current Dicom entry was checked as ImplicitVr
127 /// @return true if the current Dicom entry was checked as ImplicitVr
128 bool IsImplicitVR() const { return ImplicitVR; }
130 /// \brief Tells us if the VR of the current Dicom entry is Unknown
131 /// @return true if the VR is unknown
132 // bool IsVRUnknown() const { return DicomDict->IsVRUnknown(); }
133 bool IsVRUnknown() const { return VR == GDCM_VRUNKNOWN; }
135 /// \brief Tells us if the VM of the current Dicom entry is Unknown
136 /// @return true if the VM is unknown
137 // bool IsVMUnknown() const { return DicomDict->IsVMUnknown(); }
138 bool IsVMUnknown() { return GetVM() == GDCM_UNKNOWN; }
140 /// \brief tells us if entry is the last one of a 'no length' SequenceItem
142 bool IsItemDelimitor()
143 {return (GetGroup() == 0xfffe && GetElement() == 0xe00d);}
144 ///\brief tells us if entry is the last one of a 'no length' Sequence
146 bool IsItemStarter(){ if (GetGroup() != 0xfffe) return false;
147 return (GetElement() == 0xe000); }
148 /// \brief tells us if entry is the last one of a 'no length' Sequence
150 bool IsSequenceDelimitor() { return (GetGroup() == 0xfffe && GetElement() == 0xe0dd);}
152 virtual void Copy(DocEntry *doc);
155 // DocEntry(DictEntry*);
156 DocEntry(uint16_t group, uint16_t elem, VRKey const &vr);
159 /// \brief pointer to the underlying Dicom dictionary element
160 DictEntry *DicomDict;
162 /// \brief Corresponds to the real length of the data
163 /// This length might always be even
166 /// \brief Length to read in the file to obtain data
169 /// \brief Even when reading explicit vr files, some elements happen to
170 /// be implicit. Flag them here since we can't use the entry->vr without
171 /// breaking the underlying dictionary.
174 /// Offset from the beginning of file for direct user access
177 /// \brief Value Representation (to avoid accessing Dicom Dict every time!)
180 /// \brief Dicom \ref TagKey. Contains Dicom Group number and Dicom Element number
181 /// (to avoid accessing Dicom Dict every time !) // JPRx
186 } // end namespace gdcm
187 //-----------------------------------------------------------------------------