-class GDCM_EXPORT gdcmHeader {
- void SkipBytes(guint32);
-private:
- static VRHT *dicom_vr;
- // Dictionaries of data elements:
- static gdcmDictSet* Dicts; // global dictionary container
- gdcmDict* RefPubDict; // public dictionary
- gdcmDict* RefShaDict; // shadow dictionary (optional)
- // Parsed element values:
- ElValSet PubElVals; // parsed with Public Dictionary
- ElValSet ShaElVals; // parsed with Shadow Dictionary
- string filename; // refering underlying file
- FILE * fp;
- // The tag Image Location ((0028,0200) containing the address of
- // the pixels) is not allways present. When we store this information
- // FIXME
- // outside of the elements:
- guint16 grPixel;
- guint16 numPixel;
- // Swap code (little, big, big-bad endian): this code is not fixed
- // during parsing.FIXME sw should be an enum e.g.
- //enum EndianType {
- //LittleEndian,
- //BadLittleEndian,
- //BigEndian,
- //BadBigEndian};
- int sw;
- // Only the elements whose size are below this bound shall be loaded.
- // By default, this upper bound is limited to 1024 (which looks reasonable
- // when one considers the definition of the various VR contents).
- guint32 MaxSizeLoadElementValue;
-
- guint16 ReadInt16(void);
- guint32 ReadInt32(void);
- guint16 SwapShort(guint16);
- guint32 SwapLong(guint32);
- void Initialise(void);
- void CheckSwap(void);
- void FindLength(ElValue *);
- guint32 FindLengthOB(void);
- void FindVR(ElValue *);
- void LoadElementValue(ElValue *);
- void LoadElementValueSafe(ElValue *);
- void SkipElementValue(ElValue *);
- void InitVRDict(void);
- void SwitchSwapToBigEndian(void);
- void FixFoundLength(ElValue*, guint32);
- bool IsAnInteger(ElValue *);
- bool IsBigEndianTransferSyntax(void);
- void SetMaxSizeLoadElementValue(long);
- ElValue * ReadNextElement(void);
- gdcmDictEntry * IsInDicts(guint32, guint32);
- size_t GetPixelOffset(void);
-protected:
- enum FileType {
- Unknown = 0,
- TrueDicom,
- ExplicitVR,
- ImplicitVR,
- ACR,
- ACR_LIBIDO}; // CLEANME
- FileType filetype;
- int write(ostream&);
- int anonymize(ostream&); // FIXME : anonymize should be a friend ?
-public:
- void LoadElements(void);
- virtual void ParseHeader(void);
- gdcmHeader(const char* filename);
- virtual ~gdcmHeader();
-
- // TODO Swig int SetPubDict(string filename);
- // When some proprietary shadow groups are disclosed, whe can set
- // up an additional specific dictionary to access extra information.
- // TODO Swig int SetShaDict(string filename);
-
- // Retrieve all potentially available tag [tag = (group, element)] names
- // from the standard (or public) dictionary. Typical usage: enable the
- // user of a GUI based interface to select his favorite fields for sorting
- // or selection.
- // TODO Swig string* GetPubTagNames();
- // Get the element values themselves:
- string GetPubElValByName(string TagName);
- string GetPubElValByNumber(guint16 group, guint16 element);
- // Getting the element value representation (VR) might be needed by caller
- // to convert the string typed content to caller's native type (think
- // of C/C++ vs Python).
- string GetPubElValRepByName(string TagName);
- string GetPubElValRepByNumber(guint16 group, guint16 element);
- TagElValueHT & GetPubElVal(void) { return PubElVals.GetTagHt(); };
- void PrintPubElVal(ostream & os = cout);
- void PrintPubDict(ostream &);
-
- // Same thing with the shadow :
- // TODO Swig string* GetShaTagNames();
- string GetShaElValByName(string TagName);
- string GetShaElValByNumber(guint16 group, guint16 element);
- string GetShaElValRepByName(string TagName);
- string GetShaElValRepByNumber(guint16 group, guint16 element);
-
- // Wrappers of the above (public is privileged over shadow) to avoid
- // bugging the caller with knowing if ElVal is from the public or shadow
- // dictionary.
- string GetElValByName(string TagName);
- string GetElValByNumber(guint16 group, guint16 element);
- string GetElValRepByName(string TagName);
- string GetElValRepByNumber(guint16 group, guint16 element);
-
- // TODO Swig int SetPubElValByName(string content, string TagName);
- // TODO Swig int SetPubElValByNumber(string content, guint16 group, guint16 element);
- // TODO Swig int SetShaElValByName(string content, string ShadowTagName);
- // TODO Swig int SetShaElValByNumber(string content, guint16 group, guint16 element);
-
- // TODO Swig int GetSwapCode();
-};
-
-////////////////////////////////////////////////////////////////////////////
-// In addition to Dicom header exploration, this class is designed
-// for accessing the image/volume content. One can also use it to
-// write Dicom files.
-////// QUESTION: this looks still like an open question wether the
-////// relationship between a gdcmFile and gdcmHeader is of
-////// type IS_A or HAS_A !
-class GDCM_EXPORT gdcmFile: gdcmHeader
-{
-private:
- void* Data;
- int Parsed; // weather allready parsed
- string OrigFileName; // To avoid file overwrite
-public:
- // Constructor dedicated to writing a new DICOMV3 part10 compliant
- // file (see SetFileName, SetDcmTag and Write)
- // TODO Swig gdcmFile();
- // Opens (in read only and when possible) an existing file and checks
- // for DICOM compliance. Returns NULL on failure.
- // Note: the in-memory representation of all available tags found in
- // the DICOM header is post-poned to first header information access.
- // This avoid a double parsing of public part of the header when
- // one sets an a posteriori shadow dictionary (efficiency can be
- // seen a a side effect).
- gdcmFile(string & filename);
- // For promotion (performs a deepcopy of pointed header object)
- // TODO Swig gdcmFile(gdcmHeader* header);
- // TODO Swig ~gdcmFile();
-
- // On writing purposes. When instance was created through
- // gdcmFile(string filename) then the filename argument MUST be different
- // from the constructor's one (no overwriting aloud).
- // TODO Swig int SetFileName(string filename);
-
- // Allocates necessary memory, copies the data (image[s]/volume[s]) to
- // newly allocated zone and return a pointer to it:
- // TODO Swig void * GetImageData();
- // Returns size (in bytes) of required memory to contain data
- // represented in this file.
- // TODO Swig size_t GetImageDataSize();
- // Copies (at most MaxSize bytes) of data to caller's memory space.
- // Returns an error code on failure (if MaxSize is not big enough)
- // TODO Swig int PutImageDataHere(void* destination, size_t MaxSize );
- // Allocates ExpectedSize bytes of memory at this->Data and copies the
- // pointed data to it.
- // TODO Swig int SetImageData(void * Data, size_t ExpectedSize);
- // Push to disk.
- // TODO Swig int Write();
-};
-
-//class gdcmSerie : gdcmFile;
-//class gdcmMultiFrame : gdcmFile;