1 // $Header: /cvs/public/gdcm/src/Attic/gdcmHeader.h,v 1.32 2003/07/02 16:47:22 jpr Exp $
7 #include "gdcmCommon.h"
10 #include "gdcmException.h"
11 #include "gdcmDictSet.h"
12 #include "gdcmElValue.h"
13 #include "gdcmElValSet.h"
15 typedef std::string VRKey;
16 typedef std::string VRAtr;
17 typedef std::map<VRKey, VRAtr> VRHT; // Value Representation Hash Table
19 /// The purpose of an instance of gdcmHeader is to act as a container of
20 /// all the DICOM elements and their corresponding values (and
21 /// additionaly the corresponding DICOM dictionary entry) of the header
24 /// The typical usage of instances of class gdcmHeader is to classify a set of
25 /// dicom files according to header information e.g. to create a file hierarchy
26 /// reflecting the Patient/Study/Serie informations, or extracting a given
27 /// SerieId. Accesing the content (image[s] or volume[s]) is beyond the
28 /// functionality of this class and belongs to gdmcFile.
29 /// \note The various entries of the explicit value representation (VR) shall
30 /// be managed within a dictionary which is shared by all gdcmHeader
32 /// \note The gdcmHeader::Set*Tag* family members cannot be defined as
33 /// protected due to Swig limitations for as Has_a dependency between
34 /// gdcmFile and gdcmHeader.
36 class GDCM_EXPORT gdcmHeader {
37 void SkipBytes(guint32);
39 /// Pointer to the Value Representation Hash Table which contains all
40 /// the VR of the DICOM version3 public dictionary.
41 gdcmVR *dicom_vr; // Not a class member for thread-safety reasons
42 /// Pointer to global dictionary container
43 gdcmDictSet* Dicts; // Not a class member for thread-safety reasons
44 /// Public dictionary used to parse this header
46 /// Optional "shadow dictionary" (private elements) used to parse this
49 /// Pointer to the Transfert Syntax Hash Table which contains all
50 /// the TS of the DICOM version3 public dictionary.
51 gdcmTS *dicom_ts; // Not a class member for thread-safety reasons
53 /// ELement VALueS parsed with the PUBlic dictionary.
54 gdcmElValSet PubElValSet;
55 /// ELement VALueS parsed with the SHAdow dictionary.
56 gdcmElValSet ShaElValSet;
57 /// Refering underlying filename.
60 // FIXME sw should be an enum e.g.
66 /// Swap code e.g. little, big, bad-big, bad-little endian). Warning:
67 /// this code is not fixed during header parsing.
70 /// Size treshold above which an element value will NOT be loaded in
71 /// memory (to avoid loading the image/volume itself). By default,
72 /// this upper bound is fixed to 1024 bytes (which might look reasonable
73 /// when one considers the definition of the various VR contents).
74 guint32 MaxSizeLoadElementValue;
76 guint16 ReadInt16(void);
77 guint32 ReadInt32(void);
78 guint32 FindLengthOB(void);
79 void Initialise(void);
81 void SwitchSwapToBigEndian(void);
82 // CLEAN ME: NewManualElValToPubDict is NOT called any more.
83 gdcmElValue* NewManualElValToPubDict(std::string NewTagName,
85 void SetMaxSizeLoadElementValue(long);
87 gdcmDictEntry * GetDictEntryByNumber(guint16, guint16);
88 gdcmDictEntry * GetDictEntryByName(std::string Name);
90 // ElValue related utilities
91 gdcmElValue * ReadNextElement(void);
92 gdcmElValue * NewElValueByNumber(guint16 group, guint16 element);
93 gdcmElValue * NewElValueByName(std::string Name);
95 void FindLength(gdcmElValue *);
96 void FindVR(gdcmElValue *);
97 void LoadElementValue(gdcmElValue *);
98 void LoadElementValueSafe(gdcmElValue *);
99 void SkipElementValue(gdcmElValue *);
100 void FixFoundLength(gdcmElValue*, guint32);
101 bool IsAnInteger(gdcmElValue *);
102 void LoadElements(void);
108 gdcmElValue * GetElValueByNumber(guint16 group, guint16 element);
109 int CheckIfExistByNumber(guint16 Group, guint16 Elem );
111 guint16 SwapShort(guint16); // needed by gdcmFile
112 guint32 SwapLong(guint32); // for JPEG Files :-(
113 bool OpenFile(bool exception_on_error = false)
114 throw(gdcmFileError);
115 bool CloseFile(void);
116 int write(std::ostream&);
117 int anonymize(std::ostream&); // FIXME : anonymize should be a friend ?
119 bool IsReadable(void);
120 bool IsImplicitVRLittleEndianTransferSyntax(void);
121 bool IsExplicitVRLittleEndianTransferSyntax(void);
122 bool IsDeflatedExplicitVRLittleEndianTransferSyntax(void);
123 bool IsExplicitVRBigEndianTransferSyntax(void);
124 bool IsJPEGBaseLineProcess1TransferSyntax(void);
125 bool IsJPEGExtendedProcess2_4TransferSyntax(void);
126 bool IsJPEGExtendedProcess3_5TransferSyntax(void);
127 bool IsJPEGSpectralSelectionProcess6_8TransferSyntax(void);
128 bool IsJPEGLossless(void);
129 bool IsDicomV3(void);
131 virtual void ParseHeader(bool exception_on_error = false)
132 throw(gdcmFormatError);
133 gdcmHeader(const char *filename, bool exception_on_error = false);
134 gdcmHeader( bool exception_on_error = false);
135 virtual ~gdcmHeader();
137 size_t GetPixelOffset(void);
138 int GetSwapCode(void) { return sw; }
140 // TODO Swig int SetPubDict(std::string filename);
141 // When some proprietary shadow groups are disclosed, we can set up
142 // an additional specific dictionary to access extra information.
143 // TODO Swig int SetShaDict(std::string filename);
145 std::string GetPubElValByName (std::string TagName);
146 std::string GetPubElValRepByName (std::string TagName);
147 std::string GetPubElValByNumber (guint16 group, guint16 element);
148 std::string GetPubElValRepByNumber(guint16 group, guint16 element);
150 TagElValueHT & GetPubElVal(void) { return PubElValSet.GetTagHt(); };
151 void PrintPubElVal(std::ostream & os = std::cout);
152 void PrintPubDict (std::ostream & os = std::cout);
154 // TODO Swig std::string* GetShaTagNames();
155 std::string GetShaElValByName (std::string TagName);
156 std::string GetShaElValRepByName (std::string TagName);
157 std::string GetShaElValByNumber (guint16 group, guint16 element);
158 std::string GetShaElValRepByNumber(guint16 group, guint16 element);
160 std::string GetElValByName (std::string TagName);
161 std::string GetElValRepByName (std::string TagName);
162 std::string GetElValByNumber (guint16 group, guint16 element);
163 std::string GetElValRepByNumber(guint16 group, guint16 element);
165 int SetPubElValByName (std::string content, std::string TagName);
166 int SetShaElValByName (std::string content, std::string ShadowTagName);
168 int SetPubElValByNumber(std::string content, guint16 group, guint16 element);
169 int SetShaElValByNumber(std::string content, guint16 group, guint16 element);
171 int SetPubElValLengthByNumber(guint32 lgr, guint16 group, guint16 element);
173 int ReplaceOrCreateByNumber(std::string Value, guint16 Group, guint16 Elem);
174 int ReplaceOrCreateByNumber( char * Value, guint16 Group, guint16 Elem);
179 int GetBitsStored(void);
180 int GetSamplesPerPixel(void);
182 /* ================ COMMENT OUT after unfreeze
183 int GetPlanarConfiguration(void);
184 ======================================= */
186 int GetPixelSize(void);
187 std::string GetPixelType(void);
189 float GetXSpacing(void);
190 float GetYSpacing(void);
191 float GetZSpacing(void);
193 float GetXImagePosition(void);
194 float GetYImagePosition(void);
195 float GetZImagePosition(void);
197 int Write(FILE *, FileType);