// gdcmHeader.h //----------------------------------------------------------------------------- #ifndef GDCMHEADER_H #define GDCMHEADER_H #include "gdcmCommon.h" #include "gdcmVR.h" #include "gdcmTS.h" #include "gdcmException.h" #include "gdcmDictSet.h" #include "gdcmElValue.h" #include "gdcmElValSet.h" #include //----------------------------------------------------------------------------- typedef std::string VRKey; typedef std::string VRAtr; typedef std::map VRHT; // Value Representation Hash Table //----------------------------------------------------------------------------- /* * The purpose of an instance of gdcmHeader is to act as a container of * all the DICOM elements and their corresponding values (and * additionaly the corresponding DICOM dictionary entry) of the header * of a DICOM file. * * The typical usage of instances of class gdcmHeader is to classify a set of * dicom files according to header information e.g. to create a file hierarchy * reflecting the Patient/Study/Serie informations, or extracting a given * SerieId. Accesing the content (image[s] or volume[s]) is beyond the * functionality of this class and belongs to gdmcFile. * \note The various entries of the explicit value representation (VR) shall * be managed within a dictionary which is shared by all gdcmHeader * instances. * \note The gdcmHeader::Set*Tag* family members cannot be defined as * protected due to Swig limitations for as Has_a dependency between * gdcmFile and gdcmHeader. */ class GDCM_EXPORT gdcmHeader { public: gdcmHeader(bool exception_on_error = false); gdcmHeader(const char *filename, bool exception_on_error = false, bool enable_sequences = false); virtual ~gdcmHeader(); // Standard values and informations contained in the header inline std::string GetFileName(void) {return filename;} bool IsReadable(void); bool IsImplicitVRLittleEndianTransferSyntax(void); bool IsExplicitVRLittleEndianTransferSyntax(void); bool IsDeflatedExplicitVRLittleEndianTransferSyntax(void); bool IsExplicitVRBigEndianTransferSyntax(void); bool IsJPEGBaseLineProcess1TransferSyntax(void); bool IsJPEGExtendedProcess2_4TransferSyntax(void); bool IsJPEGExtendedProcess3_5TransferSyntax(void); bool IsJPEGSpectralSelectionProcess6_8TransferSyntax(void); bool IsRLELossLessTransferSyntax(void); bool IsJPEGLossless(void); bool IsJPEG2000(void); bool IsDicomV3(void); FileType GetFileType(void); // Some heuristic based accessors, end user intended // (to be move to gdcmHeaderHelper?) int GetXSize(void); int GetYSize(void); int GetZSize(void); int GetBitsStored(void); int GetBitsAllocated(void); int GetSamplesPerPixel(void); int GetPlanarConfiguration(void); int GetPixelSize(void); std::string GetPixelType(void); size_t GetPixelOffset(void); size_t GetPixelAreaLength(void); bool HasLUT(void); int GetLUTNbits(void); unsigned char * GetLUTRGBA(void); std::string GetTransfertSyntaxName(void); // When some proprietary shadow groups are disclosed, we can set up // an additional specific dictionary to access extra information. // OK : we still have *ONE* ElValSet, // with both Public and Shadow Elements // parsed against THE Public Dictionary and A (single) Shadow Dictionary // TODO Swig int SetShaDict(std::string filename); // TODO Swig int SetPubDict(std::string filename); // Public element value std::string GetPubElValByName (std::string tagName); std::string GetPubElValRepByName (std::string tagName); std::string GetPubElValByNumber (guint16 group, guint16 element); std::string GetPubElValRepByNumber(guint16 group, guint16 element); bool SetPubElValByName (std::string content, std::string tagName); bool SetPubElValByNumber(std::string content, guint16 group, guint16 element); bool SetPubElValLengthByNumber(guint32 lgr, guint16 group, guint16 element); inline ListTag & GetPubListElem(void) { return PubElValSet.GetListElem();}; inline TagElValueHT & GetPubElVal(void) { return PubElValSet.GetTagHt(); }; void PrintPubElVal(std::ostream & os = std::cout); void PrintPubDict (std::ostream & os = std::cout); // Element value std::string GetElValByName (std::string tagName); std::string GetElValRepByName (std::string tagName); std::string GetElValByNumber (guint16 group, guint16 element); std::string GetElValRepByNumber(guint16 group, guint16 element); bool SetElValueByName(std::string content,std::string tagName); // bool SetElValueByNumber(std::string content,guint16 group, guint16 element); // inline ListTag & GetListElem(void) { return PubElValSet.GetListElem();}; // inline TagElValueHT & GetElVal(void) { return PubElValSet.GetTagHt(); }; // Read (used in gdcmFile) FILE *OpenFile(bool exception_on_error = false) throw(gdcmFileError); bool CloseFile(void); virtual void ParseHeader(bool exception_on_error = false) throw(gdcmFormatError); // Write (used in gdcmFile) bool Write(FILE *, FileType); void SetImageDataSize(size_t ExpectedSize); // System access inline int GetSwapCode(void) { return sw; } guint16 SwapShort(guint16); // needed by gdcmFile guint32 SwapLong(guint32); // for JPEG Files // was protected bool ReplaceOrCreateByNumber(std::string Value, guint16 Group, guint16 Elem); bool ReplaceOrCreateByNumber( char * Value, guint16 Group, guint16 Elem); bool ReplaceIfExistByNumber ( char * Value, guint16 Group, guint16 Elem); protected: bool CheckIfExistByNumber(guint16 Group, guint16 Elem ); gdcmElValue * GetElValueByNumber(guint16 group, guint16 element); int write(std::ostream&); int anonymize(std::ostream&); // FIXME : anonymize should be a friend ? size_t GetPubElValOffsetByNumber (guint16 Group, guint16 Elem); void * GetPubElValVoidAreaByNumber(guint16 Group, guint16 Elem); void * LoadElementVoidArea (guint16 Group, guint16 Element); // Variables FILE * fp; FileType filetype; // ACR, ACR_LIBIDO, ExplicitVR, ImplicitVR, Unknown private: // Read void LoadElements (void); void LoadElementValue (gdcmElValue *); void LoadElementValueSafe(gdcmElValue *); void FindLength (gdcmElValue *); void FindVR (gdcmElValue *); guint32 FindLengthOB(void); void SkipElementValue (gdcmElValue *); void FixFoundLength (gdcmElValue *, guint32); bool IsAnInteger (gdcmElValue *); guint16 ReadInt16(void); guint32 ReadInt32(void); void SkipBytes(guint32); void Initialise(void); void CheckSwap(void); void SwitchSwapToBigEndian(void); void SetMaxSizeLoadElementValue(long); // Dict gdcmDictEntry *GetDictEntryByName (std::string Name); gdcmDictEntry *GetDictEntryByNumber(guint16, guint16); // ElValue related utilities gdcmElValue *ReadNextElement (void); gdcmElValue *NewElValueByNumber(guint16 group, guint16 element); gdcmElValue *NewElValueByName (std::string Name); gdcmElValue* GetElementByName (std::string Name); // Deprecated gdcmElValue *NewManualElValToPubDict(std::string NewTagName, std::string VR); // Variables // Pointer to the Value Representation Hash Table which contains all // the VR of the DICOM version3 public dictionary. gdcmVR *dicom_vr; // Not a class member for thread-safety reasons // Pointer to the Transfert Syntax Hash Table which contains all // the TS of the DICOM version3 public dictionary. gdcmTS *dicom_ts; // Not a class member for thread-safety reasons // Pointer to global dictionary container gdcmDictSet *Dicts; // Not a class member for thread-safety reasons // Public dictionary used to parse this header gdcmDict *RefPubDict; // Optional "shadow dictionary" (private elements) used to parse this // header gdcmDict *RefShaDict; /// ELement VALueS parsed with the PUBlic dictionary. gdcmElValSet PubElValSet; // Refering underlying filename. std::string filename; int enableSequences; // FIXME sw should be an enum e.g. //enum EndianType { //LittleEndian, //BadLittleEndian, //BigEndian, //BadBigEndian}; // Swap code e.g. little, big, bad-big, bad-little endian). Warning: // this code is not fixed during header parsing. int sw; // Size treshold above which an element value will NOT be loaded in // memory (to avoid loading the image/volume itself). By default, // this upper bound is fixed to 1024 bytes (which might look reasonable // when one considers the definition of the various VR contents). guint32 MaxSizeLoadElementValue; static const unsigned int HEADER_LENGTH_TO_READ; static const unsigned int MAX_SIZE_LOAD_ELEMENT_VALUE; }; //----------------------------------------------------------------------------- #endif