1 // $Header: /cvs/public/gdcm/src/Attic/gdcmHeader.h,v 1.45 2003/12/22 12:46:16 regrain Exp $
6 #include "gdcmCommon.h"
9 #include "gdcmException.h"
10 #include "gdcmDictSet.h"
11 #include "gdcmElValue.h"
12 #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 {
38 /// Pointer to the Value Representation Hash Table which contains all
39 /// the VR of the DICOM version3 public dictionary.
40 gdcmVR *dicom_vr; // Not a class member for thread-safety reasons
41 /// Pointer to global dictionary container
42 gdcmDictSet *Dicts; // Not a class member for thread-safety reasons
43 /// Public dictionary used to parse this header
45 /// Optional "shadow dictionary" (private elements) used to parse this
48 /// Pointer to the Transfert Syntax Hash Table which contains all
49 /// the TS of the DICOM version3 public dictionary.
50 gdcmTS *dicom_ts; // Not a class member for thread-safety reasons
52 /// ELement VALueS parsed with the PUBlic dictionary.
53 gdcmElValSet PubElValSet;
54 /// ELement VALueS parsed with the SHAdow dictionary.
55 gdcmElValSet ShaElValSet;
56 /// Refering underlying filename.
61 // FIXME sw should be an enum e.g.
67 /// Swap code e.g. little, big, bad-big, bad-little endian). Warning:
68 /// this code is not fixed during header parsing.
71 /// Size treshold above which an element value will NOT be loaded in
72 /// memory (to avoid loading the image/volume itself). By default,
73 /// this upper bound is fixed to 1024 bytes (which might look reasonable
74 /// when one considers the definition of the various VR contents).
75 guint32 MaxSizeLoadElementValue;
77 guint16 ReadInt16(void);
78 guint32 ReadInt32(void);
79 guint32 FindLengthOB(void);
80 void Initialise(void);
82 void SwitchSwapToBigEndian(void);
83 // CLEAN ME: NewManualElValToPubDict is NOT called any more.
84 gdcmElValue *NewManualElValToPubDict(std::string NewTagName,
86 void SetMaxSizeLoadElementValue(long);
88 gdcmDictEntry *GetDictEntryByNumber(guint16, guint16);
89 gdcmDictEntry *GetDictEntryByName (std::string Name);
91 // ElValue related utilities
92 gdcmElValue *ReadNextElement(void);
93 gdcmElValue *NewElValueByNumber(guint16 group, guint16 element);
94 gdcmElValue *NewElValueByName (std::string Name);
96 void FindLength (gdcmElValue *);
97 void FindVR (gdcmElValue *);
98 void LoadElementValue (gdcmElValue *);
99 void LoadElementValueSafe(gdcmElValue *);
100 void SkipElementValue (gdcmElValue *);
101 void FixFoundLength (gdcmElValue *, guint32);
102 bool IsAnInteger (gdcmElValue *);
103 void LoadElements(void);
104 void SkipBytes(guint32);
110 gdcmElValue * GetElValueByNumber(guint16 group, guint16 element);
111 int CheckIfExistByNumber(guint16 Group, guint16 Elem );
113 int write(std::ostream&);
114 int anonymize(std::ostream&); // FIXME : anonymize should be a friend ?
117 FILE *OpenFile(bool exception_on_error = false)
118 throw(gdcmFileError);
119 bool CloseFile(void);
120 FileType GetFileType(void);
122 bool IsReadable(void);
123 bool IsImplicitVRLittleEndianTransferSyntax(void);
124 bool IsExplicitVRLittleEndianTransferSyntax(void);
125 bool IsDeflatedExplicitVRLittleEndianTransferSyntax(void);
126 bool IsExplicitVRBigEndianTransferSyntax(void);
127 bool IsJPEGBaseLineProcess1TransferSyntax(void);
128 bool IsJPEGExtendedProcess2_4TransferSyntax(void);
129 bool IsJPEGExtendedProcess3_5TransferSyntax(void);
130 bool IsJPEGSpectralSelectionProcess6_8TransferSyntax(void);
131 bool IsRLELossLessTransferSyntax(void);
132 bool IsJPEGLossless(void);
133 bool IsJPEG2000(void);
134 bool IsDicomV3(void);
136 virtual void ParseHeader(bool exception_on_error = false)
137 throw(gdcmFormatError);
139 gdcmHeader(bool exception_on_error = false);
140 gdcmHeader(const char *filename,
141 bool exception_on_error = false,
142 bool enable_sequences = false);
144 virtual ~gdcmHeader();
146 std::string GetFileName(void) {return filename;}
148 size_t GetPixelOffset(void);
149 size_t GetPixelAreaLength(void);
151 int GetSwapCode(void) { return sw; }
153 // TODO Swig int SetPubDict(std::string filename);
154 // When some proprietary shadow groups are disclosed, we can set up
155 // an additional specific dictionary to access extra information.
156 // TODO Swig int SetShaDict(std::string filename);
158 std::string GetPubElValByName (std::string TagName);
159 std::string GetPubElValRepByName (std::string TagName);
160 std::string GetPubElValByNumber (guint16 group, guint16 element);
161 std::string GetPubElValRepByNumber(guint16 group, guint16 element);
163 size_t GetPubElValOffsetByNumber(guint16 Group, guint16 Elem);
164 void * GetPubElValVoidAreaByNumber(guint16 Group, guint16 Elem);
165 void * LoadElementVoidArea(guint16 Group, guint16 Element);
167 ListTag & GetListElem(void) { return PubElValSet.GetListElem(); };
169 TagElValueHT & GetPubElVal(void) { return PubElValSet.GetTagHt(); };
170 void PrintPubElVal(std::ostream & os = std::cout);
171 void PrintPubDict (std::ostream & os = std::cout);
173 // TODO Swig std::string* GetShaTagNames();
174 std::string GetShaElValByName (std::string TagName);
175 std::string GetShaElValRepByName (std::string TagName);
176 std::string GetShaElValByNumber (guint16 group, guint16 element);
177 std::string GetShaElValRepByNumber(guint16 group, guint16 element);
179 std::string GetElValByName (std::string TagName);
180 std::string GetElValRepByName (std::string TagName);
181 std::string GetElValByNumber (guint16 group, guint16 element);
182 std::string GetElValRepByNumber(guint16 group, guint16 element);
184 int SetPubElValByName (std::string content, std::string TagName);
185 int SetShaElValByName (std::string content, std::string ShadowTagName);
187 int SetPubElValByNumber(std::string content, guint16 group, guint16 element);
188 int SetShaElValByNumber(std::string content, guint16 group, guint16 element);
190 int SetPubElValLengthByNumber(guint32 lgr, guint16 group, guint16 element);
192 int ReplaceOrCreateByNumber(std::string Value, guint16 Group, guint16 Elem);
193 int ReplaceOrCreateByNumber( char * Value, guint16 Group, guint16 Elem);
194 int ReplaceIfExistByNumber ( char * Value, guint16 Group, guint16 Elem);
196 int Write(FILE *, FileType);
198 // Some heuristic based accessors, end user intended
203 int GetBitsStored(void);
204 int GetBitsAllocated(void);
205 int GetSamplesPerPixel(void);
207 int GetPlanarConfiguration(void);
209 int GetPixelSize(void);
210 std::string GetPixelType(void);
212 std::string GetTransferSyntaxName(void);
214 int GetLUTNbits(void);
215 unsigned char * GetLUTRGBA(void);
217 void SetImageDataSize (size_t ExpectedSize);
220 guint16 SwapShort(guint16); // needed by gdcmFile
221 guint32 SwapLong(guint32); // for JPEG Files