X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmHeader.cxx;h=66b97ce2b8ac093cc7de8d98392bc7793040cebd;hb=541ed5b2824ff14630565a474b1406e58b677662;hp=363a3260ed66a0786ec57c308e032eb252ed8c78;hpb=c0dbd079b33fa47c936c88e881057037e042f71a;p=gdcm.git diff --git a/src/gdcmHeader.cxx b/src/gdcmHeader.cxx index 363a3260..66b97ce2 100644 --- a/src/gdcmHeader.cxx +++ b/src/gdcmHeader.cxx @@ -1,677 +1,1541 @@ -#include "gdcmlib.h" -extern "C" { -#include "glib.h" -} +// gdcmHeader.cxx + #include +#include // For nthos: #ifdef _MSC_VER #include #else #include #endif -#include +#include // for isalpha +#include +#include "gdcmUtil.h" +#include "gdcmHeader.h" + +// Refer to gdcmHeader::CheckSwap() +#define HEADER_LENGTH_TO_READ 256 +// Refer to gdcmHeader::SetMaxSizeLoadElementValue() +#define _MaxSizeLoadElementValue_ 1024 -#define LGR_ENTETE_A_LIRE 256 // on ne lit plus que le debut -#define DEBUG 1 +gdcmVR * gdcmHeader::dicom_vr = (gdcmVR*)0; -//FIXME: this looks dirty to me... -#define str2num(str, typeNum) *((typeNum *)(str)) +void gdcmHeader::Initialise(void) { + if (!gdcmHeader::dicom_vr) + gdcmHeader::dicom_vr = gdcmGlobal::GetVR(); + Dicts = new gdcmDictSet(); + RefPubDict = Dicts->GetDefaultPubDict(); + RefShaDict = (gdcmDict*)0; +} -VRHT * gdcmHeader::dicom_vr = (VRHT*)0; +gdcmHeader::gdcmHeader(const char *InFilename, bool exception_on_error) { + SetMaxSizeLoadElementValue(_MaxSizeLoadElementValue_); + filename = InFilename; + Initialise(); + OpenFile(exception_on_error); + ParseHeader(); + LoadElements(); + CloseFile(); +} -gdcmHeader::gdcmHeader () { - if (!gdcmHeader::dicom_vr) - InitVRDict(); - bool grPixelTrouve = false; - PixelPosition = (size_t)0; - PixelsTrouves = false; +bool gdcmHeader::OpenFile(bool exception_on_error) + throw(gdcmFileError) { + fp=fopen(filename.c_str(),"rb"); + if(exception_on_error) { + if(!fp) + throw gdcmFileError("gdcmHeader::gdcmHeader(const char *, bool)"); + } + else + dbg.Error(!fp, "gdcmHeader::gdcmHeader cannot open file", filename.c_str()); + if ( fp ) + return true; + return false; } -void gdcmHeader::InitVRDict (void) { - if (dicom_vr && DEBUG) { - printf ("InitVRDict : VR dictionary allready set\n"); - return; - } - VRHT *vr = new VRHT; - (*vr)["AE"] = "Application Entity"; // 16 car max - (*vr)["AS"] = "Age String"; // 4 car fixe - (*vr)["AT"] = "Attribute Tag"; // 2 unsigned short int - (*vr)["CS"] = "Code String"; // 16 car max - (*vr)["DA"] = "Date"; // 8 car fixe - (*vr)["DS"] = "Decimal String"; // Decimal codé Binaire 16 max - (*vr)["DT"] = "Date Time"; // 26 car max - (*vr)["FL"] = "Floating Point Single"; // 4 octets IEEE 754:1985 - (*vr)["FD"] = "Floating Point Double"; // 8 octets IEEE 754:1985 - (*vr)["IS"] = "Integer String"; // en format externe 12 max - (*vr)["LO"] = "Long String"; // 64 octets max - (*vr)["LT"] = "Long Text"; // 10240 max - (*vr)["OB"] = "Other Byte String"; - (*vr)["OW"] = "Other Word String"; - (*vr)["PN"] = "Person Name"; - (*vr)["SH"] = "Short String"; // 16 car max - (*vr)["SL"] = "Signed Long"; - (*vr)["SQ"] = "Sequence of Items"; // Not Applicable - (*vr)["SS"] = "Signed Short"; // 2 octets - (*vr)["ST"] = "Short Text"; // 1024 car max - (*vr)["TM"] = "Time"; // 16 car max - (*vr)["UI"] = "Unique Identifier"; // 64 car max - (*vr)["UN"] = "Unknown"; - (*vr)["UT"] = "Unlimited Text"; // 2 puissance 32 -1 car max - (*vr)["UL"] = "Unsigned Long "; // 4 octets fixe - (*vr)["US"] = "Unsigned Short "; // 2 octets fixe - dicom_vr = vr; -} - -/** - * \ingroup gdcmHeader - * \brief La seule maniere sure que l'on aie pour determiner - * si on est en LITTLE_ENDIAN, BIG-ENDIAN, - * BAD-LITTLE-ENDIAN, BAD-BIG-ENDIAN - * est de trouver l'element qui donne la longueur d'un 'GROUP' - * (on sait que la longueur de cet element vaut 0x00000004) - * et de regarder comment cette longueur est codee en memoire - * - * Le probleme vient de ce que parfois, il n'y en a pas ... - * - * On fait alors le pari qu'on a a faire a du LITTLE_ENDIAN propre. - * (Ce qui est la norme -pas respectee- depuis ACR-NEMA) - * Si ce n'est pas le cas, on ne peut rien faire. +bool gdcmHeader::CloseFile(void) { + int closed = fclose(fp); + fp = (FILE *)0; + if (! closed) + return false; + return true; +} + +gdcmHeader::~gdcmHeader (void) { + delete Dicts; + //FIXME obviously there is much to be done here ! + return; +} + +// Fourth semantics: +// CMD Command +// META Meta Information +// DIR Directory +// ID +// PAT Patient +// ACQ Acquisition +// REL Related +// IMG Image +// SDY Study +// VIS Visit +// WAV Waveform +// PRC +// DEV Device +// NMI Nuclear Medicine +// MED +// BFS Basic Film Session +// BFB Basic Film Box +// BIB Basic Image Box +// BAB +// IOB +// PJ +// PRINTER +// RT Radio Therapy +// DVH +// SSET +// RES Results +// CRV Curve +// OLY Overlays +// PXL Pixels +// + +/** + * \ingroup gdcmHeader + * \brief Discover what the swap code is (among little endian, big endian, + * bad little endian, bad big endian). * - * (il faudrait avoir des fonctions auxquelles - * on passe le code Swap en parametre, pour faire des essais 'manuels') */ void gdcmHeader::CheckSwap() { - guint32 s; - guint32 x=4; // x : pour ntohs - bool net2host; // true when HostByteOrder is the same as NetworkByteOrder - - int lgrLue; - char * entCur; - char deb[LGR_ENTETE_A_LIRE]; - - // On teste le processeur - if (x==ntohs(x)) { - net2host = true; - } else { - net2host = false; - } - - // On commence par verifier si c'est du DICOM 'actuel' - // ------------- - lgrLue = fread(deb,1,LGR_ENTETE_A_LIRE, fp); - - entCur = deb+128; - if(memcmp(entCur, "DICM", (size_t)4) == 0) { - filetype = TrueDicom; - if (DEBUG) printf ("_IdDcmCheckSwap : C est du DICOM actuel \n"); - } else { - filetype = Unknown; - if (DEBUG) printf ("_IdDcmCheckSwap : Ce n'est PAS du DICOM actuel\n"); - } + // The only guaranted way of finding the swap code is to find a + // group tag since we know it's length has to be of four bytes i.e. + // 0x00000004. Finding the swap code in then straigthforward. Trouble + // occurs when we can't find such group... + guint32 s; + guint32 x=4; // x : pour ntohs + bool net2host; // true when HostByteOrder is the same as NetworkByteOrder + + int lgrLue; + char * entCur; + char deb[HEADER_LENGTH_TO_READ]; + + // First, compare HostByteOrder and NetworkByteOrder in order to + // determine if we shall need to swap bytes (i.e. the Endian type). + if (x==ntohs(x)) + net2host = true; + else + net2host = false; + + // The easiest case is the one of a DICOM header, since it possesses a + // file preamble where it suffice to look for the string "DICM". + lgrLue = fread(deb, 1, HEADER_LENGTH_TO_READ, fp); + + entCur = deb + 128; + if(memcmp(entCur, "DICM", (size_t)4) == 0) { + dbg.Verbose(1, "gdcmHeader::CheckSwap:", "looks like DICOM Version3"); + // Next, determine the value representation (VR). Let's skip to the + // first element (0002, 0000) and check there if we find "UL" + // - or "OB" if the 1st one is (0002,0001) -, + // in which case we (almost) know it is explicit VR. + // WARNING: if it happens to be implicit VR then what we will read + // is the length of the group. If this ascii representation of this + // length happens to be "UL" then we shall believe it is explicit VR. + // FIXME: in order to fix the above warning, we could read the next + // element value (or a couple of elements values) in order to make + // sure we are not commiting a big mistake. + // We need to skip : + // * the 128 bytes of File Preamble (often padded with zeroes), + // * the 4 bytes of "DICM" string, + // * the 4 bytes of the first tag (0002, 0000),or (0002, 0001) + // i.e. a total of 136 bytes. + entCur = deb + 136; + // FIXME + // Use gdcmHeader::dicom_vr to test all the possibilities + // instead of just checking for UL, OB and UI !? + if( (memcmp(entCur, "UL", (size_t)2) == 0) || + (memcmp(entCur, "OB", (size_t)2) == 0) || + (memcmp(entCur, "UI", (size_t)2) == 0) ) + { + filetype = ExplicitVR; + dbg.Verbose(1, "gdcmHeader::CheckSwap:", + "explicit Value Representation"); + } else { + filetype = ImplicitVR; + dbg.Verbose(1, "gdcmHeader::CheckSwap:", + "not an explicit Value Representation"); + } - if(filetype == TrueDicom) { - // on saute le File Preamble (souvent a ZERO) : 128 Octets - // + le DICM (4), et le (0002, 0000) soit 4 (136 = 128 + 4 + 4) - entCur = deb+136; - if(memcmp(entCur, "UL", (size_t)2) == 0) { - // les 2 premiers octets de la lgr peuvent valoir UL --> Explicit VR - filetype = ExplicitVR; - if (DEBUG) printf ("_IdDcmCheckSwap : Explicit VR\n"); - } else { - filetype = ImplicitVR; - if (DEBUG) printf ("_IdDcmCheckSwap : PAS Explicit VR\n"); - } - - if (net2host) { // HostByteOrder is different from NetworkByteOrder - sw = 0; // on est sur PC ou DEC --> LITTLE-ENDIAN -> Rien a faire - if (DEBUG) printf("HostByteOrder = NetworkByteOrder\n"); - } else { /* on est sur une Sun ou une SGI */ - sw = 4321; - if (DEBUG) printf("HostByteOrder != NetworkByteOrder\n"); - } - - rewind(fp); - fseek (fp, 132L, SEEK_SET); //On se positionne sur le debut des info - offsetCourant=132; - } // End of TrueDicom - - // Pas du TrueDicom : permiere hypothese c'est de l'ACR 'propre', auquel - // cas la lgr du premier element du groupe est FORCEMENT 4 - entCur=deb + 4; - s=str2num(entCur,int); - - switch (s) { - case 0x00040000 : - sw=3412; if(DEBUG) printf("s : %08x sw : %d\n",s,sw); - filetype = ACR; - break; - case 0x04000000 : - sw=4321; if(DEBUG) printf("s : %08x sw : %d\n",s,sw); - filetype = ACR; - break; - case 0x00000400 : - sw=2143; if(DEBUG) printf("s : %08x sw : %d\n",s,sw); - filetype = ACR; - break; - case 0x00000004 : - sw=0; if(DEBUG) printf("s : %08x sw : %d\n",s,sw); - filetype = ACR; - break; - default : - sw = -1; - if (DEBUG) printf (" Pas trouve l info de Swap; On va parier\n"); - } - if(sw!=-1) { - rewind(fp); // les info commencent au debut - offsetCourant=0; - return; - } + if (net2host) { + sw = 4321; + dbg.Verbose(1, "gdcmHeader::CheckSwap:", + "HostByteOrder != NetworkByteOrder"); + } else { + sw = 0; + dbg.Verbose(1, "gdcmHeader::CheckSwap:", + "HostByteOrder = NetworkByteOrder"); + } + + // Position the file position indicator at first tag (i.e. + // after the file preamble and the "DICM" string). + rewind(fp); + fseek (fp, 132L, SEEK_SET); + return; + } // End of DicomV3 - // Deuxieme hypothese : c'est de l'ACR 'pas propre' i.e. il manque - // la lgr du groupe - - // On n'a pas trouve l'info de swap. - // Si c'est du VRAI ACR NEMA et - // * si on est sur une DEC ou un PC alors swap=0, - // * si on est sur SUN ou SGI, alors swap=4321 - // Si c'est du RAW, ca degagera + tard - if (DEBUG) printf("On force la chance \n"); - - if (x!=ntohs(x)) // HostByteOrder is different from NetworkByteOrder - // on est sur PC ou DEC --> LITTLE-ENDIAN -> Rien a faire - sw = 0; - else - // on est sur Sun ou SGI - sw = 4321; - rewind(fp); // les info commencent au debut - offsetCourant=0; - return; + // Alas, this is not a DicomV3 file and whatever happens there is no file + // preamble. We can reset the file position indicator to where the data + // is (i.e. the beginning of the file). + dbg.Verbose(1, "gdcmHeader::CheckSwap:", "not a DICOM Version3 file"); + rewind(fp); + + // Our next best chance would be to be considering a 'clean' ACR/NEMA file. + // By clean we mean that the length of the first tag is written down. + // If this is the case and since the length of the first group HAS to be + // four (bytes), then determining the proper swap code is straightforward. + + entCur = deb + 4; + // We assume the array of char we are considering contains the binary + // representation of a 32 bits integer. Hence the following dirty + // trick : + s = *((guint32 *)(entCur)); + + switch (s) { + case 0x00040000 : + sw = 3412; + filetype = ACR; + return; + case 0x04000000 : + sw = 4321; + filetype = ACR; + return; + case 0x00000400 : + sw = 2143; + filetype = ACR; + return; + case 0x00000004 : + sw = 0; + filetype = ACR; + return; + default : + dbg.Verbose(0, "gdcmHeader::CheckSwap:", + "ACR/NEMA unfound swap info (time to raise bets)"); + } + + // We are out of luck. It is not a DicomV3 nor a 'clean' ACR/NEMA file. + // It is time for despaired wild guesses. So, let's assume this file + // happens to be 'dirty' ACR/NEMA, i.e. the length of the group is + // not present. Then the only info we have is the net2host one. + filetype = Unknown; + if (! net2host ) + sw = 0; + else + sw = 4321; + return; +} + +void gdcmHeader::SwitchSwapToBigEndian(void) { + dbg.Verbose(1, "gdcmHeader::SwitchSwapToBigEndian", + "Switching to BigEndian mode."); + if ( sw == 0 ) { + sw = 4321; + return; + } + if ( sw == 4321 ) { + sw = 0; + return; + } + if ( sw == 3412 ) { + sw = 2143; + return; + } + if ( sw == 2143 ) + sw = 3412; +} + +/** + * \ingroup gdcmHeader + * \brief Find the value representation of the current tag. + */ +void gdcmHeader::FindVR( gdcmElValue *ElVal) { + if (filetype != ExplicitVR) + return; + + char VR[3]; + string vr; + int lgrLue; + long PositionOnEntry = ftell(fp); + // Warning: we believe this is explicit VR (Value Representation) because + // we used a heuristic that found "UL" in the first tag. Alas this + // doesn't guarantee that all the tags will be in explicit VR. In some + // cases (see e-film filtered files) one finds implicit VR tags mixed + // within an explicit VR file. Hence we make sure the present tag + // is in explicit VR and try to fix things if it happens not to be + // the case. + bool RealExplicit = true; + + lgrLue=fread (&VR, (size_t)2,(size_t)1, fp); + VR[2]=0; + vr = string(VR); + + // Assume we are reading a falsely explicit VR file i.e. we reached + // a tag where we expect reading a VR but are in fact we read the + // first to bytes of the length. Then we will interogate (through find) + // the dicom_vr dictionary with oddities like "\004\0" which crashes + // both GCC and VC++ implementations of the STL map. Hence when the + // expected VR read happens to be non-ascii characters we consider + // we hit falsely explicit VR tag. + + if ( (!isalpha(VR[0])) && (!isalpha(VR[1])) ) + RealExplicit = false; + + // CLEANME searching the dicom_vr at each occurence is expensive. + // PostPone this test in an optional integrity check at the end + // of parsing or only in debug mode. + if ( RealExplicit && !dicom_vr->Count(vr) ) + RealExplicit= false; + + if ( RealExplicit ) { + if ( ElVal->IsVrUnknown() ) { + // When not a dictionary entry, we can safely overwrite the vr. + ElVal->SetVR(vr); + return; + } + if ( ElVal->GetVR() == vr ) { + // The vr we just read and the dictionary agree. Nothing to do. + return; + } + // The vr present in the file and the dictionary disagree. We assume + // the file writer knew best and use the vr of the file. Since it would + // be unwise to overwrite the vr of a dictionary (since it would + // compromise it's next user), we need to clone the actual DictEntry + // and change the vr for the read one. + gdcmDictEntry* NewTag = new gdcmDictEntry(ElVal->GetGroup(), + ElVal->GetElement(), + vr, + "FIXME", + ElVal->GetName()); + ElVal->SetDictEntry(NewTag); + return; + } + + // We thought this was explicit VR, but we end up with an + // implicit VR tag. Let's backtrack. + dbg.Verbose(1, "gdcmHeader::FindVR:", "Falsely explicit vr file"); + fseek(fp, PositionOnEntry, SEEK_SET); + // When this element is known in the dictionary we shall use, e.g. for + // the semantics (see the usage of IsAnInteger), the vr proposed by the + // dictionary entry. Still we have to flag the element as implicit since + // we know now our assumption on expliciteness is not furfilled. + // avoid . + if ( ElVal->IsVrUnknown() ) + ElVal->SetVR("Implicit"); + ElVal->SetImplicitVr(); } /** * \ingroup gdcmHeader - * \brief Pour les fichiers non TrueDicom, si le recognition - * code (0008,0010) s'avere etre "ACR_LIBIDO", alors - * valide la reconnaissance du fichier en positionnant - * filetype. + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a ImplicitVRLittleEndian one. + * + * @return True when ImplicitVRLittleEndian found. False in all other cases. */ -void gdcmHeader::setAcrLibido() { - string RecCode; - - if ( filetype != TrueDicom) { - printf("_setAcrLibido expects a presumably ACR file\n"); - // Recognition Code --> n'existe plus en DICOM V3 ... - RecCode = GetPubElValByNumber(0x0008, 0x0010); - // FIXME NOW - if (RecCode == "ACRNEMA_LIBIDO" || - RecCode == "CANRME_AILIBOD" ) - filetype = ACR_LIBIDO; - else - filetype = ACR; - } - return; +bool gdcmHeader::IsImplicitVRLittleEndianTransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2" ) + return true; + return false; } /** - * \ingroup gdcmHeader - * \brief recupere la longueur d'un champ DICOM. - * Preconditions: - * 1/ le fichier doit deja avoir ete ouvert, - * 2/ CheckSwap() doit avoir ete appele - * 3/ la partie 'group' ainsi que la partie 'elem' - * de l'acr_element doivent avoir ete lues. + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a ExplicitVRLittleEndian one. * - * ACR-NEMA : we allways get - * GroupNumber (2 Octets) - * ElementNumber (2 Octets) - * ElementSize (4 Octets) - * DICOM en implicit Value Representation : - * GroupNumber (2 Octets) - * ElementNumber (2 Octets) - * ElementSize (4 Octets) + * @return True when ExplicitVRLittleEndian found. False in all other cases. + */ +bool gdcmHeader::IsExplicitVRLittleEndianTransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.1" ) + return true; + return false; +} + +/** + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a DeflatedExplicitVRLittleEndian one. * - * DICOM en explicit Value Representation : - * GroupNumber (2 Octets) - * ElementNumber (2 Octets) - * ValueRepresentation (2 Octets) - * ElementSize (2 Octets) + * @return True when DeflatedExplicitVRLittleEndian found. False in all other cases. + */ +bool gdcmHeader::IsDeflatedExplicitVRLittleEndianTransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.1.99" ) + return true; + return false; +} + +/** + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a Explicit VR Big Endian one. * - * ATTENTION : dans le cas ou ValueRepresentation = OB, OW, SQ, UN - * GroupNumber (2 Octets) - * ElementNumber (2 Octets) - * ValueRepresentation (2 Octets) - * zone reservee (2 Octets) - * ElementSize (4 Octets) + * @return True when big endian found. False in all other cases. + */ +bool gdcmHeader::IsExplicitVRBigEndianTransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.2" ) //1.2.2 ??? A verifier ! + return true; + return false; +} + +/** + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a JPEGBaseLineProcess1 one. * - * @param sw code swap - * @param skippedLength pointeur sur nombre d'octets que l'on a saute qd - * la lecture est finie - * @param longueurLue pointeur sur longueur (en nombre d'octets) - * effectivement lue - * @return longueur retenue pour le champ - */ - -// FIXME sw n'est plus un argument necessaire -long int gdcmHeader::RecupLgr( - ElValue *pleCourant, - int *skippedLength) -{ - guint32 l_gr; - unsigned short int l_gr_2; - int i; - char VR[5]; - int lgrLue; - - // FIX ME - // ATTENTION : nbCode correspond au nombre d'elements dans la table - // de type DICOM_VR. A nettoyer. - // - int nbCode=26; - - if (filetype == ExplicitVR) { - lgrLue=fread (&VR, (size_t)2,(size_t)1, fp); - VR[2]=0; - - // Warning: we believe this is explicit VR (Value Representation) because - // we used a heuristic that found "UL" in the first tag. Alas this - // doesn't guarantee that all the tags will be in explicit VR. In some - // cases (see e-film filtered files) one finds implicit VR tags mixed - // within an explicit VR file. Hence we make sure the present tag - // is in explicit VR and try to fix things if it happens not to be - // the case. - - // FIXME There should be only one occurence returned. Avoid the - // first extraction by calling proper method. - VRAtr FoundVR = dicom_vr->find(string(VR))->first; - if (FoundVR.empty()) { - pleCourant->SetVR(FoundVR); - } else { - - // On est mal : implicit VR repere - // mais ce n'est pas un code connu ... - // On reconstitue la longueur - - if(DEBUG) - printf("IdDcmRecupLgr : Explicit VR, mais pas de code connu\n"); - memcpy(&l_gr, VR,(size_t)2); - - lgrLue=fread ( ((char*)&l_gr)+2, (size_t)2, (size_t)1, fp); - - l_gr = SWAP_LONG((guint32)l_gr); - - if(DEBUG) - printf("IdDcmRecupLgr : lgr deduite : %08x , %d\n",l_gr,l_gr); - - pleCourant->SetLgrLue(l_gr); - if ( (int)l_gr == -1) - l_gr=0; - - *skippedLength = 4; - if (DEBUG) - printf(" 1 : lgr %08x (%d )skippedLength %d\n", - l_gr,l_gr, *skippedLength); - return(l_gr); - } - - // On repart dans la sequence 'sensee' - - if(DEBUG) - printf("VR : [%01x , %01x] (%c%c) en position %d du tableau\n", - VR[0],VR[1],VR[0],VR[1],i); - - if ( (!memcmp( VR,"OB",(size_t)2 )) || - (!memcmp( VR,"OW",(size_t)2 )) || - (!memcmp( VR,"SQ",(size_t)2 )) || - (!memcmp( VR,"UN",(size_t)2 )) ) { - - // les 2 octets suivants sont reserves: on les saute - if(DEBUG) - printf("IdDcmRecupLgr : les 2 octets suivants sont reserves\n"); - fseek(fp, 2L,SEEK_CUR); - - //on lit la lgr sur QUATRE octets - lgrLue=fread (&l_gr, (size_t)4,(size_t)1, fp); - l_gr = SWAP_LONG((guint32)l_gr); - *skippedLength = 8; - - } else { - //on lit la lgr sur DEUX octets - lgrLue=fread (&l_gr_2, (size_t)2,(size_t)1, fp); - - if(sw) l_gr_2 = SWAP_SHORT((unsigned short)l_gr_2); - - pleCourant->SetLgrLue(l_gr_2); - - - if ( l_gr_2 == 0xffff) { - l_gr = 0; - } else { - l_gr = l_gr_2; - } - *skippedLength = 4; - } - } else { - // Explicit VR = 0 - //on lit la lgr sur QUATRE octets - - lgrLue=fread (&l_gr, (size_t)4,(size_t)1, fp); - - l_gr= SWAP_LONG((long)l_gr); - *skippedLength = 4; - } - - pleCourant->SetLgrLue(l_gr); - - // Traitement des curiosites sur la longueur - - if ( (int)l_gr == 0xffffffff) - l_gr=0; - - if(!memcmp( VR,"SQ",(size_t)2 )) { // ca annonce une SEQUENCE d'items ?! - l_gr=0; // on lira donc les items de la sequence - if (DEBUG) printf(" SQ trouve : lgr %d \n",l_gr); - } - - if (DEBUG) - printf(" 2 : lgr %08x (%d) skippedLength %d\n",l_gr,l_gr, *skippedLength); - return(l_gr); + * @return True when JPEGBaseLineProcess1found. False in all other cases. + */ +bool gdcmHeader::IsJPEGBaseLineProcess1TransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.4.50" ) + return true; + return false; +} + +// faire qq chose d'intelligent a la place de ça + +bool gdcmHeader::IsJPEGLossless(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + const char * Transfert = Element->GetValue().c_str(); + if ( memcmp(Transfert+strlen(Transfert)-2 ,"70",2)==0) return true; + if ( memcmp(Transfert+strlen(Transfert)-2 ,"55",2)==0) return true; + return false; } + /** * \ingroup gdcmHeader - * \brief remet les octets dans un ordre compatible avec celui du processeur + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a JPEGExtendedProcess2-4 one. + * + * @return True when JPEGExtendedProcess2-4 found. False in all other cases. + */ +bool gdcmHeader::IsJPEGExtendedProcess2_4TransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.4.51" ) + return true; + return false; +} - * @return longueur retenue pour le champ +/** + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a JPEGExtendeProcess3-5 one. + * + * @return True when JPEGExtendedProcess3-5 found. False in all other cases. */ -guint32 gdcmHeader::SWAP_LONG(guint32 a) { - // FIXME: il pourrait y avoir un pb pour les entiers negatifs ... - switch (sw) { - case 4321 : - a=( ((a<<24) & 0xff000000) | ((a<<8) & 0x00ff0000) | - ((a>>8) & 0x0000ff00) | ((a>>24) & 0x000000ff) ); - break; - - case 3412 : - a=( ((a<<16) & 0xffff0000) | ((a>>16) & 0x0000ffff) ); - break; - - case 2143 : - a=( ((a<<8) & 0xff00ff00) | ((a>>8) & 0x00ff00ff) ); - break; - default : - printf("\n\n\n *******\n erreur code swap ?!?\n\n\n"); - a=0; - } - return(a); +bool gdcmHeader::IsJPEGExtendedProcess3_5TransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.4.52" ) + return true; + return false; +} + +/** + * \ingroup gdcmHeader + * \brief Determines if the Transfer Syntax was allready encountered + * and if it corresponds to a JPEGSpectralSelectionProcess6-8 one. + * + * @return True when JPEGSpectralSelectionProcess6-8 found. False in all + * other cases. + */ +bool gdcmHeader::IsJPEGSpectralSelectionProcess6_8TransferSyntax(void) { + gdcmElValue* Element = PubElValSet.GetElementByNumber(0x0002, 0x0010); + if ( !Element ) + return false; + LoadElementValueSafe(Element); + string Transfer = Element->GetValue(); + if ( Transfer == "1.2.840.10008.1.2.4.53" ) + return true; + return false; +} +/** + * \ingroup gdcmHeader + * \brief Predicate for dicom version 3 file. + * @return True when the file is a dicom version 3. + */ +bool gdcmHeader::IsDicomV3(void) { + if ( (filetype == ExplicitVR) + || (filetype == ImplicitVR) ) + return true; + return false; +} + +/** + * \ingroup gdcmHeader + * \brief When the length of an element value is obviously wrong (because + * the parser went Jabberwocky) one can hope improving things by + * applying this heuristic. + */ +void gdcmHeader::FixFoundLength(gdcmElValue * ElVal, guint32 FoundLength) { + if ( FoundLength == 0xffffffff) + FoundLength = 0; + ElVal->SetLength(FoundLength); +} + +guint32 gdcmHeader::FindLengthOB(void) { + // See PS 3.5-2001, section A.4 p. 49 on encapsulation of encoded pixel data. + guint16 g; + guint16 n; + long PositionOnEntry = ftell(fp); + bool FoundSequenceDelimiter = false; + guint32 TotalLength = 0; + guint32 ItemLength; + + while ( ! FoundSequenceDelimiter) { + g = ReadInt16(); + n = ReadInt16(); + if (errno == 1) + return 0; + TotalLength += 4; // We even have to decount the group and element + if ( g != 0xfffe ) { + dbg.Verbose(1, "gdcmHeader::FindLengthOB: ", + "wrong group for an item sequence."); + errno = 1; + return 0; + } + if ( n == 0xe0dd ) + FoundSequenceDelimiter = true; + else if ( n != 0xe000) { + dbg.Verbose(1, "gdcmHeader::FindLengthOB: ", + "wrong element for an item sequence."); + errno = 1; + return 0; + } + ItemLength = ReadInt32(); + TotalLength += ItemLength + 4; // We add 4 bytes since we just read + // the ItemLength with ReadInt32 + SkipBytes(ItemLength); + } + fseek(fp, PositionOnEntry, SEEK_SET); + return TotalLength; +} + +void gdcmHeader::FindLength(gdcmElValue * ElVal) { + guint16 element = ElVal->GetElement(); + string vr = ElVal->GetVR(); + guint16 length16; + + if ( (filetype == ExplicitVR) && ! ElVal->IsImplicitVr() ) { + + if ( (vr=="OB") || (vr=="OW") || (vr=="SQ") || (vr=="UN") ) { + // The following reserved two bytes (see PS 3.5-2001, section + // 7.1.2 Data element structure with explicit vr p27) must be + // skipped before proceeding on reading the length on 4 bytes. + fseek(fp, 2L, SEEK_CUR); + guint32 length32 = ReadInt32(); + if ( (vr == "OB") && (length32 == 0xffffffff) ) { + ElVal->SetLength(FindLengthOB()); + return; + } + FixFoundLength(ElVal, length32); + return; + } + + // Length is encoded on 2 bytes. + length16 = ReadInt16(); + + // We can tell the current file is encoded in big endian (like + // Data/US-RGB-8-epicard) when we find the "Transfer Syntax" tag + // and it's value is the one of the encoding of a big endian file. + // In order to deal with such big endian encoded files, we have + // (at least) two strategies: + // * when we load the "Transfer Syntax" tag with value of big endian + // encoding, we raise the proper flags. Then we wait for the end + // of the META group (0x0002) among which is "Transfer Syntax", + // before switching the swap code to big endian. We have to postpone + // the switching of the swap code since the META group is fully encoded + // in little endian, and big endian coding only starts at the next + // group. The corresponding code can be hard to analyse and adds + // many additional unnecessary tests for regular tags. + // * the second strategy consists in waiting for trouble, that shall + // appear when we find the first group with big endian encoding. This + // is easy to detect since the length of a "Group Length" tag (the + // ones with zero as element number) has to be of 4 (0x0004). When we + // encouter 1024 (0x0400) chances are the encoding changed and we + // found a group with big endian encoding. + // We shall use this second strategy. In order to make sure that we + // can interpret the presence of an apparently big endian encoded + // length of a "Group Length" without committing a big mistake, we + // add an additional check: we look in the allready parsed elements + // for the presence of a "Transfer Syntax" whose value has to be "big + // endian encoding". When this is the case, chances are we have got our + // hands on a big endian encoded file: we switch the swap code to + // big endian and proceed... + if ( (element == 0x000) && (length16 == 0x0400) ) { + if ( ! IsExplicitVRBigEndianTransferSyntax() ) { + dbg.Verbose(0, "gdcmHeader::FindLength", "not explicit VR"); + errno = 1; + return; + } + length16 = 4; + SwitchSwapToBigEndian(); + // Restore the unproperly loaded values i.e. the group, the element + // and the dictionary entry depending on them. + guint16 CorrectGroup = SwapShort(ElVal->GetGroup()); + guint16 CorrectElem = SwapShort(ElVal->GetElement()); + gdcmDictEntry * NewTag = GetDictEntryByNumber(CorrectGroup, + CorrectElem); + if (!NewTag) { + // This correct tag is not in the dictionary. Create a new one. + NewTag = new gdcmDictEntry(CorrectGroup, CorrectElem); + } + // FIXME this can create a memory leaks on the old entry that be + // left unreferenced. + ElVal->SetDictEntry(NewTag); + } + + // Heuristic: well some files are really ill-formed. + if ( length16 == 0xffff) { + length16 = 0; + dbg.Verbose(0, "gdcmHeader::FindLength", + "Erroneous element length fixed."); + } + FixFoundLength(ElVal, (guint32)length16); + return; + } + + // Either implicit VR or a non DICOM conformal (see not below) explicit + // VR that ommited the VR of (at least) this element. Farts happen. + // [Note: according to the part 5, PS 3.5-2001, section 7.1 p25 + // on Data elements "Implicit and Explicit VR Data Elements shall + // not coexist in a Data Set and Data Sets nested within it".] + // Length is on 4 bytes. + FixFoundLength(ElVal, ReadInt32()); } /** * \ingroup gdcmHeader - * \brief remet les octets dans un ordre compatible avec celui du processeur + * \brief Swaps back the bytes of 4-byte long integer accordingly to + * processor order. + * + * @return The suggested integer. + */ +guint32 gdcmHeader::SwapLong(guint32 a) { + switch (sw) { + case 0 : + break; + case 4321 : + a=( ((a<<24) & 0xff000000) | ((a<<8) & 0x00ff0000) | + ((a>>8) & 0x0000ff00) | ((a>>24) & 0x000000ff) ); + break; + + case 3412 : + a=( ((a<<16) & 0xffff0000) | ((a>>16) & 0x0000ffff) ); + break; + + case 2143 : + a=( ((a<<8) & 0xff00ff00) | ((a>>8) & 0x00ff00ff) ); + break; + default : + dbg.Error(" gdcmHeader::SwapLong : unset swap code"); + a=0; + } + return(a); +} - * @return longueur retenue pour le champ +/** + * \ingroup gdcmHeader + * \brief Swaps the bytes so they agree with the processor order + * @return The properly swaped 16 bits integer. */ -short int gdcmHeader::SWAP_SHORT(short int a) { - if ( (sw==4321) || (sw==2143) ) - a =(((a<<8) & 0x0ff00) | ((a>>8)&0x00ff)); - return (a); +guint16 gdcmHeader::SwapShort(guint16 a) { + if ( (sw==4321) || (sw==2143) ) + a =(((a<<8) & 0x0ff00) | ((a>>8)&0x00ff)); + return (a); +} + +void gdcmHeader::SkipBytes(guint32 NBytes) { + //FIXME don't dump the returned value + (void)fseek(fp, (long)NBytes, SEEK_CUR); +} + +void gdcmHeader::SkipElementValue(gdcmElValue * ElVal) { + SkipBytes(ElVal->GetLength()); +} + +void gdcmHeader::SetMaxSizeLoadElementValue(long NewSize) { + if (NewSize < 0) + return; + if ((guint32)NewSize >= (guint32)0xffffffff) { + MaxSizeLoadElementValue = 0xffffffff; + return; + } + MaxSizeLoadElementValue = NewSize; } /** * \ingroup gdcmHeader - * \brief lit le dicom_element suivant. - * (le fichier doit deja avoir ete ouvert, - * _IdAcrCheckSwap(ID_DCM_HDR *e) avoir ete appele) - * @param e ID_DCM_HDR dans lequel effectuer la recherche. - * @param sw code swap. - * @return En cas de succes, 1 - * 0 en cas d'echec. - */ - -ElValue * gdcmHeader::ReadNextElement(void) { - unsigned short g; - unsigned short n; - guint32 l; - long int posFich; - int skL; - size_t lgrLue; - //CLEANME DICOM_ELEMENTS *t; - ElValue * nouvDcmElem; - - if (DEBUG) printf(" ===> entree ds _IdDcmReadNextElement\n"); - - // FIXME la probabilte pour depasser sans s'en rendre compte - // est grande avec le test d'egalite' suivant ! - if(offsetCourant == taille_fich) { // On a atteint la fin du fichier - if (DEBUG) printf(" On a atteint la fin du fichier\n"); - return(NULL); - } else { - if (DEBUG) { - posFich = ftell(fp); - printf("lgrFich %f positionDsFich %f offset courant %f\n", - (float)taille_fich, - (float)posFich, - (float)offsetCourant); - } - } - - // ------------------------- Lecture Num group : g - lgrLue=fread (&g, (size_t)2,(size_t)1, fp); - - if (feof(fp)) { - if (DEBUG) printf("_IdDcmReadNextElement : eof trouve\n"); - return (NULL); - } - if (ferror(fp)){ - if (DEBUG) printf(" IdDcmReadNextElement : echec lecture NumGr\n"); - return (NULL); - } - - if (DEBUG) printf("_IdDcmReadNextElement : gr %04x\n",g ); - - if (sw) g= SWAP_SHORT(((short)g)); - - //CLEANME nouvDcmElem->Gr=g; - //FIXME this might be usefull for detecting at parse time that - //something is screwy in the file - //e->__NumeroGroupePrecedent =g; - + * \brief Loads the element content if it's length is not bigger + * than the value specified with + * gdcmHeader::SetMaxSizeLoadElementValue() + */ +void gdcmHeader::LoadElementValue(gdcmElValue * ElVal) { + size_t item_read; + guint16 group = ElVal->GetGroup(); + guint16 elem = ElVal->GetElement(); + string vr = ElVal->GetVR(); + guint32 length = ElVal->GetLength(); + bool SkipLoad = false; - // ------------------------- Lecture Num Elem : n - lgrLue=fread (&n, (size_t)2,(size_t)1, fp); - - if (feof(fp)) { - if (DEBUG) printf("_IdDcmReadNextElement : eof trouve\n"); - return (NULL); - } - if (ferror(fp)){ - if (DEBUG) printf(" IdDcmReadNextElement : echec lecture NumElem\n"); - return (NULL); - } - - if (DEBUG) printf("_IdDcmReadNextElement : num %04x\n",n ); - - if(sw) n= SWAP_SHORT(((short)n)); - //CLEANMEnouvDcmElem->Num=n; - - // Find out if the tag we encountered is in the dictionaries: - DictEntry * NewTag = IsInDicts(g, n); - if (!NewTag) - NewTag = new DictEntry(g, n, "Unknown", "Unknown"); - - nouvDcmElem = new ElValue(NewTag); - if (!nouvDcmElem) { - printf("Echec alloc ElValue *nouvDcmElem\n"); - return(NULL); - } + fseek(fp, (long)ElVal->GetOffset(), SEEK_SET); + + // FIXME Sequences not treated yet ! + // + // Ne faudrait-il pas au contraire trouver immediatement + // une maniere 'propre' de traiter les sequences (vr = SQ) + // car commencer par les ignorer risque de conduire a qq chose + // qui pourrait ne pas etre generalisable + // Well, I'm expecting your code !!! + + if( vr == "SQ" ) + SkipLoad = true; - // ------------------------- Lecture longueur element : l - - l = RecupLgr(nouvDcmElem, &skL); - - if(g==0xfffe) l=0; // pour sauter les indicateurs de 'SQ' - - nouvDcmElem->LgrElem=l; - - if (DEBUG) - if (n!=0) - printf("_IdDcmReadNextElement : " - " gr %04x\tnum %04x\tlong %08x (%d)\n", g,n,l,l); + // Heuristic : a sequence "contains" a set of tags (called items). It looks + // like the last tag of a sequence (the one that terminates the sequence) + // has a group of 0xfffe (with a dummy length). + if( group == 0xfffe ) + SkipLoad = true; - // ------------------------- Lecture Valeur element - - // FIXME The exact size should be l if we move to strings or whatever - // CLEAN ME NEWValue used to be nouvDcmElem->valeurElem - char* NewValue = (char*)g_malloc(l+1); - if(NewValue) { - NewValue[l]= 0; - } else { - if (DEBUG) - printf(" IdDcmReadNextElement : echec Alloc valeurElem lgr : %d\n",l); - return (NULL); - } - - // FIXME les elements trop long (seuil a fixer a la main) ne devraient - // pas etre charge's !!!! Voir TODO. - lgrLue=fread (NewValue, (size_t)l,(size_t)1, fp); - - offsetCourant += 2 + 2 + skL; // gr + num + lgr - nouvDcmElem->Offset = offsetCourant; - offsetCourant += l; // debut elem suivant + if ( SkipLoad ) { + ElVal->SetLength(0); + ElVal->SetValue("gdcm::Skipped"); + return; + } - // ------------------------- Doit-on le Swapper ? + // When the length is zero things are easy: + if ( length == 0 ) { + ElVal->SetValue(""); + return; + } + + // The elements whose length is bigger than the specified upper bound + // are not loaded. Instead we leave a short notice of the offset of + // the element content and it's length. + if (length > MaxSizeLoadElementValue) { + ostringstream s; + s << "gdcm::NotLoaded."; + s << " Address:" << (long)ElVal->GetOffset(); + s << " Length:" << ElVal->GetLength(); + ElVal->SetValue(s.str()); + return; + } + + // When an integer is expected, read and convert the following two or + // four bytes properly i.e. as an integer as opposed to a string. - if ((n==0) && sw) { // n=0 : lgr du groupe : guint32 - *(guint32 *) NewValue = SWAP_LONG ((*(guint32 *) NewValue)); - } else { - if(sw) { - if ( (g/2)*2-g==0) { /* on ne teste pas les groupes impairs */ - - if ((l==4)||(l==2)) { // pour eviter de swapper les chaines - // de lgr 2 ou 4 - if (DEBUG) - printf("Consultation Dictionary DICOM g %04x n %0xx l %d\n", - g,n,l); - - // FIXME make reference to nouvDcmElem->GetTag - string VR = NewTag->GetVR(); - if ( (VR == "UL") || (VR == "US") - || (VR == "SL") || (VR == "SS") - || (g == 0x0028 && ( n == 0x0005 || n == 0x0200) )) { - // seuls (28,5) de vr RET et (28,200) sont des entiers - // ... jusqu'a preuve du contraire - - if(l==4) { - *(guint32 *) NewValue = - SWAP_LONG ((*(guint32 *) NewValue)); - } else { - if(l==2) - *(unsigned short *) NewValue = - SWAP_SHORT ((*(unsigned short *)NewValue)); - } - } - } /* fin if l==2 ==4 */ - } /* fin if g pair */ - } /* fin sw */ - } - nouvDcmElem->value = NewValue; - SetAsidePixelData(nouvDcmElem); - return nouvDcmElem; -} - -/** - * \ingroup gdcmHeader - * \brief If we encountered the offset of the pixels in the file - * (Pixel Data) then keep the info aside. - */ -void gdcmHeader::SetAsidePixelData(ElValue* elem) { - /// FIXME this wall process is bizarre: - // on peut pas lire pixel data et pixel location puis - // a la fin de la lecture aller interpreter ce qui existe ? - // penser a nettoyer les variables globales associes genre - // PixelsTrouve ou grPixelTrouve... - // - // They are two cases : - // * the pixel data (i.e. the image or the volume) is pointed by it's - // default official tag (0x7fe0,0x0010), - // * the writer of this file decided to put the image "address" (i.e the - // offset from the begining of the file) at a different tag. - // Then the "Pixel Data" offset might be found by indirection through - // the "Image Location" tag (0x0028, 0x0200). In other terms the Image - // Location tag contains the group where the "Pixel Data" offset is and - // inside this group the element is conventionally at element 0x0010 - // (when the norm is respected). - // - // Hence getting our hands on the Pixel Data is a two stage process: - // 1/ * find if the "Pixel Data" tag exists. - // * if it does not exist, look for the "Pixel Location" tag. - // 2/ look at the proper tag ("Pixel Data" or "Pixel Location" when - // it exists) what the offset it. - guint16 g; - guint16 n; - g = elem->GetGroup(); - n = elem->GetElement(); - if (!grPixelTrouve) { // on n a pas encore trouve les pixels - if (g > 0x0028) { - if (n > 0x0200 || g == 0x7FE0 ) { // on a depasse (28,200) - grPixel = 0x7FE0; - numPixel = 0x0010; - grPixelTrouve = true; - if (DEBUG) - printf("------------------------grPixel %04x numPixel %04x\n", - grPixel,numPixel); - } - } else { // on est sur (28,200) - if (g == 0x0028) { - if (n == 0x0200) { - grPixelTrouve = 1; - char* NewValue = (char*)g_malloc(elem->GetLgrElem()+1); - // FIXME: not very elegant conversion - for(int i=0;i<4;i++) - *((char*)(&grPixel)+i) = *(NewValue+i); - elem->SetValue(NewValue); - - if (DEBUG) - printf("------------------------GrPixel %04x\n", grPixel); - - if (grPixel != 0x7FE0) // Vieux pb Philips - numPixel = 0x1010; // encore utile ?? - else - numPixel = 0x0010; - if (DEBUG) - printf("------------------------grPixel %04x numPixel %04x\n", - grPixel,numPixel); + // pour les elements de Value Multiplicity > 1 + // on aura en fait une serie d'entiers + + // on devrait pouvoir faire + compact (?) + + if ( IsAnInteger(ElVal) ) { + guint32 NewInt; + ostringstream s; + int nbInt; + if (vr == "US" || vr == "SS") { + nbInt = length / 2; + NewInt = ReadInt16(); + s << NewInt; + if (nbInt > 1) { + for (int i=1; i < nbInt; i++) { + s << '\\'; + NewInt = ReadInt16(); + s << NewInt; } } - } - } else { // on vient de trouver les pixels - if (g == grPixel) { - if (n == numPixel) { - PixelPosition = elem->Offset; - PixelsTrouves = true; - if (DEBUG) - printf(" \t===> Pixels Trouves\n"); + + } else if (vr == "UL" || vr == "SL") { + nbInt = length / 4; + NewInt = ReadInt32(); + s << NewInt; + if (nbInt > 1) { + for (int i=1; i < nbInt; i++) { + s << '\\'; + NewInt = ReadInt32(); + s << NewInt; + } } - } + } + ElVal->SetValue(s.str()); + return; } + + // We need an additional byte for storing \0 that is not on disk + char* NewValue = (char*)malloc(length+1); + if( !NewValue) { + dbg.Verbose(1, "LoadElementValue: Failed to allocate NewValue"); + return; + } + NewValue[length]= 0; + + item_read = fread(NewValue, (size_t)length, (size_t)1, fp); + if ( item_read != 1 ) { + free(NewValue); + dbg.Verbose(1, "gdcmHeader::LoadElementValue","unread element value"); + ElVal->SetValue("gdcm::UnRead"); + return; + } + ElVal->SetValue(NewValue); + free(NewValue); } -DictEntry * gdcmHeader::IsInDicts(guint32 group, guint32 element) { - DictEntry * found = (DictEntry*)0; - if (!RefPubDict && !RefShaDict) { - //FIXME build a default dictionary ! - printf("FIXME in gdcmHeader::IsInDicts\n"); - } - if (RefPubDict) { - found = RefPubDict->GetTag(group, element); - if (found) - return found; - } - if (RefShaDict) { - found = RefShaDict->GetTag(group, element); - if (found) - return found; - } - return found; +/** + * \ingroup gdcmHeader + * \brief Loads the element while preserving the current + * underlying file position indicator as opposed to + * to LoadElementValue that modifies it. + * @param ElVal Element whose value shall be loaded. + * @return + */ +void gdcmHeader::LoadElementValueSafe(gdcmElValue * ElVal) { + long PositionOnEntry = ftell(fp); + LoadElementValue(ElVal); + fseek(fp, PositionOnEntry, SEEK_SET); +} + + +guint16 gdcmHeader::ReadInt16(void) { + guint16 g; + size_t item_read; + item_read = fread (&g, (size_t)2,(size_t)1, fp); + errno = 0; + if ( item_read != 1 ) { + dbg.Verbose(1, "gdcmHeader::ReadInt16", " File read error"); + errno = 1; + return 0; + } + g = SwapShort(g); + return g; +} + +guint32 gdcmHeader::ReadInt32(void) { + guint32 g; + size_t item_read; + item_read = fread (&g, (size_t)4,(size_t)1, fp); + errno = 0; + if ( item_read != 1 ) { + dbg.Verbose(1, "gdcmHeader::ReadInt32", " File read error"); + errno = 1; + return 0; + } + g = SwapLong(g); + return g; +} + +/** + * \ingroup gdcmHeader + * \brief Build a new Element Value from all the low level arguments. + * Check for existence of dictionary entry, and build + * a default one when absent. + * @param Group group of the underlying DictEntry + * @param Elem element of the underlying DictEntry + */ +gdcmElValue* gdcmHeader::NewElValueByNumber(guint16 Group, guint16 Elem) { + // Find out if the tag we encountered is in the dictionaries: + gdcmDictEntry * NewTag = GetDictEntryByNumber(Group, Elem); + if (!NewTag) + NewTag = new gdcmDictEntry(Group, Elem); + + gdcmElValue* NewElVal = new gdcmElValue(NewTag); + if (!NewElVal) { + dbg.Verbose(1, "gdcmHeader::NewElValueByNumber", + "failed to allocate gdcmElValue"); + return (gdcmElValue*)0; + } + return NewElVal; +} + +/** + * \ingroup gdcmHeader + * \brief TODO + * @param + */ +int gdcmHeader::ReplaceOrCreateByNumber(string Value, guint16 Group, guint16 Elem ) { + + gdcmElValue* nvElValue=NewElValueByNumber(Group, Elem); + PubElValSet.Add(nvElValue); + PubElValSet.SetElValueByNumber(Value, Group, Elem); + return(1); +} + + +/** + * \ingroup gdcmHeader + * \brief Build a new Element Value from all the low level arguments. + * Check for existence of dictionary entry, and build + * a default one when absent. + * @param Name Name of the underlying DictEntry + */ +gdcmElValue* gdcmHeader::NewElValueByName(string Name) { + + gdcmDictEntry * NewTag = GetDictEntryByName(Name); + if (!NewTag) + NewTag = new gdcmDictEntry(0xffff, 0xffff, "LO", "Unknown", Name); + + gdcmElValue* NewElVal = new gdcmElValue(NewTag); + if (!NewElVal) { + dbg.Verbose(1, "gdcmHeader::ObtainElValueByName", + "failed to allocate gdcmElValue"); + return (gdcmElValue*)0; + } + return NewElVal; +} + +/** + * \ingroup gdcmHeader + * \brief Read the next tag but WITHOUT loading it's value + * @return On succes the newly created ElValue, NULL on failure. + */ +gdcmElValue * gdcmHeader::ReadNextElement(void) { + + guint16 g,n; + gdcmElValue * NewElVal; + + g = ReadInt16(); + n = ReadInt16(); + if (errno == 1) + // We reached the EOF (or an error occured) and header parsing + // has to be considered as finished. + return (gdcmElValue *)0; + + NewElVal = NewElValueByNumber(g, n); + FindVR(NewElVal); + FindLength(NewElVal); + if (errno == 1) + // Call it quits + return (gdcmElValue *)0; + NewElVal->SetOffset(ftell(fp)); + return NewElVal; +} + +/** + * \ingroup gdcmHeader + * \brief Apply some heuristics to predict wether the considered + * element value contains/represents an integer or not. + * @param ElVal The element value on which to apply the predicate. + * @return The result of the heuristical predicate. + */ +bool gdcmHeader::IsAnInteger(gdcmElValue * ElVal) { + guint16 group = ElVal->GetGroup(); + guint16 element = ElVal->GetElement(); + string vr = ElVal->GetVR(); + guint32 length = ElVal->GetLength(); + + // When we have some semantics on the element we just read, and if we + // a priori know we are dealing with an integer, then we shall be + // able to swap it's element value properly. + if ( element == 0 ) { // This is the group length of the group + if (length == 4) + return true; + else { + printf("Erroneous Group Length element length %d\n",length); + + dbg.Error("gdcmHeader::IsAnInteger", + "Erroneous Group Length element length."); + } + } + + if ( (vr == "UL") || (vr == "US") || (vr == "SL") || (vr == "SS") ) + return true; + + return false; +} + +/** + * \ingroup gdcmHeader + * \brief Recover the offset (from the beginning of the file) of the pixels. + */ +size_t gdcmHeader::GetPixelOffset(void) { + // If this file complies with the norm we should encounter the + // "Image Location" tag (0x0028, 0x0200). This tag contains the + // the group that contains the pixel data (hence the "Pixel Data" + // is found by indirection through the "Image Location"). + // Inside the group pointed by "Image Location" the searched element + // is conventionally the element 0x0010 (when the norm is respected). + // When the "Image Location" is absent we default to group 0x7fe0. + guint16 grPixel; + guint16 numPixel; + string ImageLocation = GetPubElValByName("Image Location"); + if ( ImageLocation == "gdcm::Unfound" ) { + grPixel = 0x7fe0; + } else { + grPixel = (guint16) atoi( ImageLocation.c_str() ); + } + if (grPixel != 0x7fe0) + // This is a kludge for old dirty Philips imager. + numPixel = 0x1010; + else + numPixel = 0x0010; + gdcmElValue* PixelElement = PubElValSet.GetElementByNumber(grPixel, + numPixel); + if (PixelElement) + return PixelElement->GetOffset(); + else + return 0; +} + +/** + * \ingroup gdcmHeader + * \brief Searches both the public and the shadow dictionary (when they + * exist) for the presence of the DictEntry with given + * group and element. The public dictionary has precedence on the + * shadow one. + * @param group group of the searched DictEntry + * @param element element of the searched DictEntry + * @return Corresponding DictEntry when it exists, NULL otherwise. + */ +gdcmDictEntry * gdcmHeader::GetDictEntryByNumber(guint16 group, + guint16 element) { + gdcmDictEntry * found = (gdcmDictEntry*)0; + if (!RefPubDict && !RefShaDict) { + dbg.Verbose(0, "gdcmHeader::GetDictEntry", + "we SHOULD have a default dictionary"); + } + if (RefPubDict) { + found = RefPubDict->GetTagByNumber(group, element); + if (found) + return found; + } + if (RefShaDict) { + found = RefShaDict->GetTagByNumber(group, element); + if (found) + return found; + } + return found; +} + +/** + * \ingroup gdcmHeader + * \brief Searches both the public and the shadow dictionary (when they + * exist) for the presence of the DictEntry with given name. + * The public dictionary has precedence on the shadow one. + * @param Name name of the searched DictEntry + * @return Corresponding DictEntry when it exists, NULL otherwise. + */ +gdcmDictEntry * gdcmHeader::GetDictEntryByName(string Name) { + gdcmDictEntry * found = (gdcmDictEntry*)0; + if (!RefPubDict && !RefShaDict) { + dbg.Verbose(0, "gdcmHeader::GetDictEntry", + "we SHOULD have a default dictionary"); + } + if (RefPubDict) { + found = RefPubDict->GetTagByName(Name); + if (found) + return found; + } + if (RefShaDict) { + found = RefShaDict->GetTagByName(Name); + if (found) + return found; + } + return found; +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the public dictionary for element value of + * a given tag. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value when it exists, and the string + * "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetPubElValByNumber(guint16 group, guint16 element) { + return PubElValSet.GetElValueByNumber(group, element); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the public dictionary for element value + * representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetPubElValRepByNumber(guint16 group, guint16 element) { + gdcmElValue* elem = PubElValSet.GetElementByNumber(group, element); + if ( !elem ) + return "gdcm::Unfound"; + return elem->GetVR(); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the public dictionary for element value of + * a given tag. + * @param TagName name of the researched element. + * @return Corresponding element value when it exists, and the string + * "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetPubElValByName(string TagName) { + return PubElValSet.GetElValueByName(TagName); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the elements parsed with the public dictionary for + * the element value representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param TagName name of the researched element. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetPubElValRepByName(string TagName) { + gdcmElValue* elem = PubElValSet.GetElementByName(TagName); + if ( !elem ) + return "gdcm::Unfound"; + return elem->GetVR(); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within elements parsed with the SHADOW dictionary + * for the element value of a given tag. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetShaElValByNumber(guint16 group, guint16 element) { + return ShaElValSet.GetElValueByNumber(group, element); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the elements parsed with the SHADOW dictionary + * for the element value representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetShaElValRepByNumber(guint16 group, guint16 element) { + gdcmElValue* elem = ShaElValSet.GetElementByNumber(group, element); + if ( !elem ) + return "gdcm::Unfound"; + return elem->GetVR(); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the elements parsed with the shadow dictionary + * for an element value of given tag. + * @param TagName name of the researched element. + * @return Corresponding element value when it exists, and the string + * "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetShaElValByName(string TagName) { + return ShaElValSet.GetElValueByName(TagName); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within the elements parsed with the shadow dictionary for + * the element value representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param TagName name of the researched element. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetShaElValRepByName(string TagName) { + gdcmElValue* elem = ShaElValSet.GetElementByName(TagName); + if ( !elem ) + return "gdcm::Unfound"; + return elem->GetVR(); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within elements parsed with the public dictionary + * and then within the elements parsed with the shadow dictionary + * for the element value of a given tag. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetElValByNumber(guint16 group, guint16 element) { + string pub = GetPubElValByNumber(group, element); + if (pub.length()) + return pub; + return GetShaElValByNumber(group, element); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within elements parsed with the public dictionary + * and then within the elements parsed with the shadow dictionary + * for the element value representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param group Group of the researched tag. + * @param element Element of the researched tag. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetElValRepByNumber(guint16 group, guint16 element) { + string pub = GetPubElValRepByNumber(group, element); + if (pub.length()) + return pub; + return GetShaElValRepByNumber(group, element); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within elements parsed with the public dictionary + * and then within the elements parsed with the shadow dictionary + * for the element value of a given tag. + * @param TagName name of the researched element. + * @return Corresponding element value when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetElValByName(string TagName) { + string pub = GetPubElValByName(TagName); + if (pub.length()) + return pub; + return GetShaElValByName(TagName); +} + +/** + * \ingroup gdcmHeader + * \brief Searches within elements parsed with the public dictionary + * and then within the elements parsed with the shadow dictionary + * for the element value representation of a given tag. + * + * Obtaining the VR (Value Representation) might be needed by caller + * to convert the string typed content to caller's native type + * (think of C++ vs Python). The VR is actually of a higher level + * of semantics than just the native C++ type. + * @param TagName name of the researched element. + * @return Corresponding element value representation when it exists, + * and the string "gdcm::Unfound" otherwise. + */ +string gdcmHeader::GetElValRepByName(string TagName) { + string pub = GetPubElValRepByName(TagName); + if (pub.length()) + return pub; + return GetShaElValRepByName(TagName); +} + +/** + * \ingroup gdcmHeader + * \brief Accesses an existing gdcmElValue in the PubElValSet of this instance + * through it's (group, element) and modifies it's content with + * the given value. + * @param content new value to substitute with + * @param group group of the ElVal to modify + * @param element element of the ElVal to modify + */ +int gdcmHeader::SetPubElValByNumber(string content, guint16 group, + guint16 element) +{ + return ( PubElValSet.SetElValueByNumber (content, group, element) ); +} + +/** + * \ingroup gdcmHeader + * \brief Accesses an existing gdcmElValue in the PubElValSet of this instance + * through tag name and modifies it's content with the given value. + * @param content new value to substitute with + * @param TagName name of the tag to be modified + */ +int gdcmHeader::SetPubElValByName(string content, string TagName) { + return ( PubElValSet.SetElValueByName (content, TagName) ); +} + +/** + * \ingroup gdcmHeader + * \brief Accesses an existing gdcmElValue in the PubElValSet of this instance + * through it's (group, element) and modifies it's length with + * the given value. + * \warning Use with extreme caution. + * @param length new length to substitute with + * @param group group of the ElVal to modify + * @param element element of the ElVal to modify + * @return 1 on success, 0 otherwise. + */ + +int gdcmHeader::SetPubElValLengthByNumber(guint32 length, guint16 group, + guint16 element) { + return ( PubElValSet.SetElValueLengthByNumber (length, group, element) ); +} + +/** + * \ingroup gdcmHeader + * \brief Accesses an existing gdcmElValue in the ShaElValSet of this instance + * through it's (group, element) and modifies it's content with + * the given value. + * @param content new value to substitute with + * @param group group of the ElVal to modify + * @param element element of the ElVal to modify + * @return 1 on success, 0 otherwise. + */ +int gdcmHeader::SetShaElValByNumber(string content, + guint16 group, guint16 element) { + return ( ShaElValSet.SetElValueByNumber (content, group, element) ); +} + +/** + * \ingroup gdcmHeader + * \brief Accesses an existing gdcmElValue in the ShaElValSet of this instance + * through tag name and modifies it's content with the given value. + * @param content new value to substitute with + * @param TagName name of the tag to be modified + */ +int gdcmHeader::SetShaElValByName(string content, string TagName) { + return ( ShaElValSet.SetElValueByName (content, TagName) ); +} + +/** + * \ingroup gdcmHeader + * \brief Parses the header of the file but WITHOUT loading element values. + */ +void gdcmHeader::ParseHeader(bool exception_on_error) throw(gdcmFormatError) { + gdcmElValue * newElValue = (gdcmElValue *)0; + + rewind(fp); + CheckSwap(); + while ( (newElValue = ReadNextElement()) ) { + SkipElementValue(newElValue); + PubElValSet.Add(newElValue); + } +} + +/** + * \ingroup gdcmHeader + * \brief Retrieve the number of columns of image. + * @return The encountered size when found, 0 by default. + */ +int gdcmHeader::GetXSize(void) { + // We cannot check for "Columns" because the "Columns" tag is present + // both in IMG (0028,0011) and OLY (6000,0011) sections of the dictionary. + string StrSize = GetPubElValByNumber(0x0028,0x0011); + if (StrSize == "gdcm::Unfound") + return 0; + return atoi(StrSize.c_str()); +} + +/** + * \ingroup gdcmHeader + * \brief Retrieve the number of lines of image. + * \warning The defaulted value is 1 as opposed to gdcmHeader::GetXSize() + * @return The encountered size when found, 1 by default. + */ +int gdcmHeader::GetYSize(void) { + // We cannot check for "Rows" because the "Rows" tag is present + // both in IMG (0028,0010) and OLY (6000,0010) sections of the dictionary. + string StrSize = GetPubElValByNumber(0x0028,0x0010); + if (StrSize != "gdcm::Unfound") + return atoi(StrSize.c_str()); + if ( IsDicomV3() ) + return 0; + else + // The Rows (0028,0010) entry is optional for ACR/NEMA. It might + // hence be a signal (1d image). So we default to 1: + return 1; +} + +/** + * \ingroup gdcmHeader + * \brief Retrieve the number of planes of volume or the number + * of frames of a multiframe. + * \warning When present we consider the "Number of Frames" as the third + * dimension. When absent we consider the third dimension as + * being the "Planes" tag content. + * @return The encountered size when found, 1 by default. + */ +int gdcmHeader::GetZSize(void) { + // Both in DicomV3 and ACR/Nema the consider the "Number of Frames" + // as the third dimension. + string StrSize = GetPubElValByNumber(0x0028,0x0008); + if (StrSize != "gdcm::Unfound") + return atoi(StrSize.c_str()); + + // We then consider the "Planes" entry as the third dimension [we + // cannot retrieve by name since "Planes tag is present both in + // IMG (0028,0012) and OLY (6000,0012) sections of the dictionary]. + StrSize = GetPubElValByNumber(0x0028,0x0012); + if (StrSize != "gdcm::Unfound") + return atoi(StrSize.c_str()); + return 1; +} + +/** + * \ingroup gdcmHeader + * \brief Build the Pixel Type of the image. + * Possible values are: + * - U8 unsigned 8 bit, + * - S8 signed 8 bit, + * - U16 unsigned 16 bit, + * - S16 signed 16 bit, + * - U32 unsigned 32 bit, + * - S32 signed 32 bit, + * \warning 12 bit images appear as 16 bit. + * @return + */ +string gdcmHeader::GetPixelType(void) { + string BitsAlloc; + BitsAlloc = GetElValByName("Bits Allocated"); + if (BitsAlloc == "gdcm::Unfound") { + dbg.Verbose(0, "gdcmHeader::GetPixelType: unfound Bits Allocated"); + BitsAlloc = string("16"); + } + if (BitsAlloc == "12") + BitsAlloc = string("16"); + + string Signed; + Signed = GetElValByName("Pixel Representation"); + if (Signed == "gdcm::Unfound") { + dbg.Verbose(0, "gdcmHeader::GetPixelType: unfound Pixel Representation"); + BitsAlloc = string("0"); + } + if (Signed == "0") + Signed = string("U"); + else + Signed = string("S"); + + return( BitsAlloc + Signed); +} + +/** + * \ingroup gdcmHeader + * \brief This predicate, based on hopefully reasonnable heuristics, + * decides whether or not the current gdcmHeader was properly parsed + * and contains the mandatory information for being considered as + * a well formed and usable image. + * @return true when gdcmHeader is the one of a reasonable Dicom file, + * false otherwise. + */ +bool gdcmHeader::IsReadable(void) { + if ( GetElValByName("Image Dimensions") != "gdcm::Unfound" + && atoi(GetElValByName("Image Dimensions").c_str()) > 4 ) { + return false; + } + if ( GetElValByName("Bits Allocated") == "gdcm::Unfound" ) + return false; + if ( GetElValByName("Bits Stored") == "gdcm::Unfound" ) + return false; + if ( GetElValByName("High Bit") == "gdcm::Unfound" ) + return false; + if ( GetElValByName("Pixel Representation") == "gdcm::Unfound" ) + return false; + return true; +} + +/** + * \ingroup gdcmHeader + * \brief Small utility function that creates a new manually crafted + * (as opposed as read from the file) gdcmElValue with user + * specified name and adds it to the public tag hash table. + * \note A fake TagKey is generated so the PubDict can keep it's coherence. + * @param NewTagName The name to be given to this new tag. + * @param VR The Value Representation to be given to this new tag. + * @ return The newly hand crafted Element Value. + */ +gdcmElValue* gdcmHeader::NewManualElValToPubDict(string NewTagName, string VR) { + gdcmElValue* NewElVal = (gdcmElValue*)0; + guint32 StuffGroup = 0xffff; // Group to be stuffed with additional info + guint32 FreeElem = 0; + gdcmDictEntry* NewEntry = (gdcmDictEntry*)0; + + FreeElem = PubElValSet.GenerateFreeTagKeyInGroup(StuffGroup); + if (FreeElem == UINT32_MAX) { + dbg.Verbose(1, "gdcmHeader::NewManualElValToPubDict", + "Group 0xffff in Public Dict is full"); + return (gdcmElValue*)0; + } + NewEntry = new gdcmDictEntry(StuffGroup, FreeElem, + VR, "GDCM", NewTagName); + NewElVal = new gdcmElValue(NewEntry); + PubElValSet.Add(NewElVal); + return NewElVal; + +} + +/** + * \ingroup gdcmHeader + * \brief Loads the element values of all the elements present in the + * public tag based hash table. + */ +void gdcmHeader::LoadElements(void) { + rewind(fp); + TagElValueHT ht = PubElValSet.GetTagHt(); + for (TagElValueHT::iterator tag = ht.begin(); tag != ht.end(); ++tag) { + LoadElementValue(tag->second); + } +} + +void gdcmHeader::PrintPubElVal(ostream & os) { + PubElValSet.Print(os); +} + +void gdcmHeader::PrintPubDict(ostream & os) { + RefPubDict->Print(os); +} + +int gdcmHeader::Write(FILE * fp, FileType type) { + return PubElValSet.Write(fp, type); }