1 /*=========================================================================
4 Module: $RCSfile: gdcmDocEntry.h,v $
6 Date: $Date: 2007/08/29 15:30:49 $
7 Version: $Revision: 1.70 $
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,
45 bool insideMetaElements, bool insideSequence);
47 /// \brief Gets the DicEntry of the current Dicom entry
48 /// @return The DicEntry of the current Dicom entry
49 DictEntry * GetDictEntry() { return DicomDict; }
51 /// Returns the Dicom Group number of the current Dicom entry
52 uint16_t const &GetGroup() const { return Key[0]; }
53 //const uint16_t &GetGroup() const { return DicomDict->GetGroup(); }
55 /// Returns the Dicom Element number of the current Dicom entry
56 uint16_t const &GetElement() const { return Key[1];}
57 //const uint16_t &GetElement() const { return DicomDict->GetElement();}
59 /// Returns the 'key' of the current Dicom entry
60 TagKey const &GetKey() const { return Key; }
61 //TagKey GetKey() const { return DicomDict->GetKey(); }
63 /// \brief Returns the 'Name' '(e.g. "Patient's Name") found in the Dicom
64 /// Dictionnary of the current Dicom Header Entry
65 std::string const &GetName();
67 /// \brief Returns the 'Value Representation' (e.g. "PN" : Person Name,
68 /// "SL" : Signed Long), found in the Dicom header or in the Dicom
69 /// Dictionnary, of the current Dicom entry
70 VRKey const &GetVR() const { return VR; }
71 //VRKey const &GetVR() const { return DicomDict->GetVR(); }
73 /// \brief Returns the 'Value Multiplicity' (e.g. "1", "6", "1-n", "3-n"),
74 /// found in the Dicom entry or in the Dicom Dictionnary
75 /// of the current Dicom entry
76 std::string const &GetVM();
78 /// Sets the 'Value Multiplicity' of the current Dicom entry
79 //void SetVM( TagName const &v) { DicomDict->SetVM(v); }
80 void SetVM( TagName &) { std::cout << "-----------------FIXME : SetVM "; }
82 /// \brief Returns offset (since the beginning of the file, including
83 /// the File Preamble, if any) of the value of the current Dicom entry
84 /// \warning offset of the *value*, not of the Dicom entry
85 const size_t &GetOffset() const { return Offset; }
87 /// \brief Sets only 'Read Length' (*not* 'Usable Length') of the current
89 void SetReadLength(uint32_t l) { ReadLength = l; }
90 /// \brief Returns the 'read length' of the current Dicom entry
91 /// \warning this value is the one stored in the Dicom header but not
92 /// mandatoryly the one thats's used (in case of SQ, or delimiters,
93 /// the usable length is set to zero)
94 const uint32_t &GetReadLength() const { return ReadLength; }
96 /// \brief Sets both 'Read Length' and 'Usable Length' of the current
98 virtual void SetLength(uint32_t l) { Length = l; }
99 /// \brief Returns the actual value length of the current Dicom entry
100 /// \warning this value is not *always* the one stored in the Dicom header
101 /// in case of well known bugs
102 const uint32_t &GetLength() const { return Length; }
104 uint32_t GetFullLength();
105 virtual uint32_t ComputeFullLength() = 0;
107 // The following members, for internal use only !
109 /// \brief Sets the offset of the Dicom entry
110 /// \warning use with caution !
111 /// @param of offset to be set
112 void SetOffset(size_t of) { Offset = of; }
114 /// Sets to TRUE the ImplicitVr flag of the current Dicom entry
115 void SetImplicitVR() { ImplicitVR = true; }
117 /// Sets the 'Value Representation' of the current Dicom entry
118 /// @param vr VR to be set
119 void SetVR( VRKey const &vr) { VR = vr; }
121 /// Sets the 'Value Representation' of the current Dicom entry
122 /// @param key TagKey to be set
123 void SetTag( TagKey const &key) { Key = key; }
125 // -----------end of members to be used with caution
127 /// \brief Tells us if the current Dicom entry was checked as ImplicitVr
128 /// @return true if the current Dicom entry was checked as ImplicitVr
129 bool IsImplicitVR() const { return ImplicitVR; }
131 /// \brief Tells us if the VR of the current Dicom entry is Unknown
132 /// @return true if the VR is unknown
133 // bool IsVRUnknown() const { return DicomDict->IsVRUnknown(); }
134 bool IsVRUnknown() const { return VR == GDCM_VRUNKNOWN; }
136 /// \brief Tells us if the VM of the current Dicom entry is Unknown
137 /// @return true if the VM is unknown
138 // bool IsVMUnknown() const { return DicomDict->IsVMUnknown(); }
139 bool IsVMUnknown() { return GetVM() == GDCM_UNKNOWN; }
141 /// \brief tells us if entry is the last one of a 'no length' SequenceItem
143 bool IsItemDelimitor()
144 {return (GetGroup() == 0xfffe && GetElement() == 0xe00d);}
145 ///\brief tells us if entry is the last one of a 'no length' Sequence
147 bool IsItemStarter(){ if (GetGroup() != 0xfffe) return false;
148 return (GetElement() == 0xe000); }
149 /// \brief tells us if entry is the last one of a 'no length' Sequence
151 bool IsSequenceDelimitor() { return (GetGroup() == 0xfffe && GetElement() == 0xe0dd);}
153 virtual void Copy(DocEntry *doc);
156 // DocEntry(DictEntry*);
157 DocEntry(uint16_t group, uint16_t elem, VRKey const &vr);
160 /// \brief pointer to the underlying Dicom dictionary element
161 DictEntry *DicomDict;
163 /// \brief Corresponds to the real length of the data
164 /// This length might always be even
167 /// \brief Length to read in the file to obtain data
170 /// \brief Even when reading explicit vr files, some elements happen to
171 /// be implicit. Flag them here since we can't use the entry->vr without
172 /// breaking the underlying dictionary.
175 /// Offset from the beginning of file for direct user access
178 /// \brief Value Representation (to avoid accessing Dicom Dict every time!)
181 /// \brief Dicom \ref TagKey. Contains Dicom Group number and Dicom Element number
182 /// (to avoid accessing Dicom Dict every time !) // JPRx
187 } // end namespace gdcm
188 //-----------------------------------------------------------------------------