1 /*=========================================================================
4 Module: $RCSfile: gdcmDocument.h,v $
6 Date: $Date: 2005/01/07 16:45:51 $
7 Version: $Revision: 1.77 $
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 GDCMDOCUMENT_H
20 #define GDCMDOCUMENT_H
24 #include "gdcmElementSet.h"
37 class JPEGFragmentsInfo;
39 enum TransferSyntaxType {
40 ImplicitVRLittleEndian = 0,
41 ImplicitVRLittleEndianDLXGE,
42 ExplicitVRLittleEndian,
43 DeflatedExplicitVRLittleEndian,
46 JPEGExtendedProcess2_4,
47 JPEGExtendedProcess3_5,
48 JPEGSpectralSelectionProcess6_8,
49 JPEGFullProgressionProcess10_12,
50 JPEGLosslessProcess14,
51 JPEGLosslessProcess14_1,
58 //-----------------------------------------------------------------------------
60 * \brief Derived by both Header and DicomDir
62 class GDCM_EXPORT Document : public ElementSet
65 // Informations contained in the parser
66 virtual bool IsReadable();
67 FileType GetFileType();
69 TransferSyntaxType GetTransferSyntax();
71 bool IsJPEGLossless();
77 RLEFramesInfo *GetRLEInfo() { return RLEInfo; }
78 JPEGFragmentsInfo *GetJPEGInfo() { return JPEGInfo; }
81 virtual void PrintPubDict (std::ostream &os = std::cout);
82 virtual void PrintShaDict (std::ostream &os = std::cout);
86 bool SetShaDict(Dict* dict);
87 bool SetShaDict(DictKey const &dictName);
90 /// 'Swap code' accessor (see \ref SwapCode )
91 int GetSwapCode() { return SwapCode; }
92 // System access (meaning endian related !?)
93 uint16_t SwapShort(uint16_t); // needed by File
94 uint32_t SwapLong(uint32_t); // needed by File
95 uint16_t UnswapShort(uint16_t); // needed by File
96 uint32_t UnswapLong(uint32_t); // needed by File
98 // Ordering of Documents
99 bool operator<(Document &document);
103 /// Accessor to \ref Filename
104 const std::string &GetFileName() const { return Filename; }
105 /// Accessor to \ref Filename
106 void SetFileName(std::string const &fileName) { Filename = fileName; }
108 std::ifstream *OpenFile();
110 void WriteContent( std::ofstream *fp, FileType type );
114 virtual bool SetEntryByNumber(std::string const &content,
115 uint16_t group, uint16_t element);
116 virtual bool SetEntryByNumber(uint8_t *content, int lgth,
117 uint16_t group, uint16_t element);
118 virtual bool SetEntry(std::string const &content,ValEntry *entry);
119 virtual bool SetEntry(uint8_t *content, int lgth,BinEntry *entry);
121 virtual void *GetEntryBinAreaByNumber(uint16_t group, uint16_t elem);
123 virtual std::string GetEntryByNumber (uint16_t group, uint16_t elem);
124 virtual std::string GetEntryVRByNumber(uint16_t group, uint16_t elem);
125 virtual int GetEntryLengthByNumber(uint16_t group, uint16_t elem);
127 DocEntry *GetDocEntryByNumber(uint16_t group, uint16_t element);
128 ValEntry *GetValEntryByNumber(uint16_t group, uint16_t element);
129 BinEntry *GetBinEntryByNumber(uint16_t group, uint16_t element);
131 ValEntry *ReplaceOrCreateByNumber(std::string const &value,
132 uint16_t group, uint16_t elem,
133 TagName const &vr = GDCM_UNKNOWN);
134 BinEntry *ReplaceOrCreateByNumber(uint8_t* binArea, int lgth,
135 uint16_t group, uint16_t elem,
136 TagName const &vr = GDCM_UNKNOWN);
137 SeqEntry *ReplaceOrCreateByNumber(uint16_t group, uint16_t elem);
139 bool ReplaceIfExistByNumber ( std::string const &value,
140 uint16_t group, uint16_t elem );
142 virtual void LoadEntryBinArea(uint16_t group, uint16_t elem);
143 virtual void LoadEntryBinArea(BinEntry *entry);
145 void LoadDocEntrySafe(DocEntry *entry);
146 TagDocEntryHT *BuildFlatHashTable();
149 static std::string GetTransferSyntaxValue(TransferSyntaxType type);
153 // Constructor and destructor are protected to forbid end user
154 // to instanciate from this class Document (only Header and
155 // DicomDir are meaningfull).
157 Document( std::string const &filename );
160 void ReadAndSkipEncapsulatedBasicOffsetTable();
161 void ComputeRLEInfo();
162 void ComputeJPEGFragmentInfo();
164 bool CheckIfEntryExistByNumber(uint16_t group, uint16_t elem );
166 int ComputeGroup0002Length( FileType filetype );
169 /// Refering underlying filename.
170 std::string Filename;
172 /// \brief SWap code (e.g. Big Endian, Little Endian, Bad Big Endian,
173 /// Bad Little Endian) according to the processor Endianity and
174 /// what is written on disc.
177 /// File Pointer, opened during Header parsing.
180 /// ACR, ACR_LIBIDO, ExplicitVR, ImplicitVR, Unknown
183 /// After opening the file, we read HEADER_LENGTH_TO_READ bytes.
184 static const unsigned int HEADER_LENGTH_TO_READ;
186 /// \brief Elements whose value is longer than MAX_SIZE_LOAD_ELEMENT_VALUE
188 static const unsigned int MAX_SIZE_LOAD_ELEMENT_VALUE;
190 /// \brief Elements whose value is longer than MAX_SIZE_PRINT_ELEMENT_VALUE
192 /// \todo Currently not used since collides with #define in
193 /// class DocEntry . See also
194 /// method ref Document::SetMaxSizePrintEntry()
195 static const unsigned int MAX_SIZE_PRINT_ELEMENT_VALUE;
197 /// Store the RLE frames info obtained during parsing of pixels.
198 RLEFramesInfo *RLEInfo;
200 /// Store the JPEG fragments info obtained during parsing of pixels.
201 JPEGFragmentsInfo *JPEGInfo;
206 void ParseDES(DocEntrySet *set,long offset, long l_max, bool delim_mode);
207 void ParseSQ (SeqEntry *seq, long offset, long l_max, bool delim_mode);
209 void LoadDocEntry (DocEntry *e);
210 void FindDocEntryLength (DocEntry *e) throw ( FormatError );
211 uint32_t FindDocEntryLengthOBOrOW() throw( FormatUnexpected );
212 std::string FindDocEntryVR();
213 bool CheckDocEntryVR (VRKey k);
215 std::string GetDocEntryValue (DocEntry *entry);
216 std::string GetDocEntryUnvalue(DocEntry *entry);
219 void SkipDocEntry (DocEntry *entry);
220 void SkipToNextDocEntry (DocEntry *entry);
222 void FixDocEntryFoundLength(DocEntry *entry,uint32_t l);
223 bool IsDocEntryAnInteger (DocEntry *entry);
225 uint16_t ReadInt16() throw ( FormatError );
226 uint32_t ReadInt32() throw ( FormatError );
227 void SkipBytes(uint32_t);
228 bool ReadTag(uint16_t, uint16_t);
229 uint32_t ReadTagLength(uint16_t, uint16_t);
233 void SwitchSwapToBigEndian();
234 void SetMaxSizeLoadEntry(long);
235 void SetMaxSizePrintEntry(long);
237 // DocEntry related utilities
238 DocEntry *ReadNextDocEntry();
240 uint32_t GenerateFreeTagKeyInGroup(uint16_t group);
241 void BuildFlatHashTableRecurse( TagDocEntryHT &builtHT,
244 void HandleBrokenEndian(uint16_t group, uint16_t elem);
247 /// Public dictionary used to parse this header
250 /// \brief Optional "shadow dictionary" (private elements) used to parse
254 /// \brief Size threshold above which an element value will NOT be loaded
255 /// in memory (to avoid loading the image/volume itself). By default,
256 /// this upper bound is fixed to 1024 bytes (which might look reasonable
257 /// when one considers the definition of the various VR contents).
258 uint32_t MaxSizeLoadEntry;
260 /// \brief Size threshold above which an element value will NOT be *printed*
261 /// in order no to polute the screen output. By default, this upper bound
262 /// is fixed to 64 bytes.
263 uint32_t MaxSizePrintEntry;
268 } // end namespace gdcm
270 //-----------------------------------------------------------------------------