- if ( (Transfer == "1.2.840.10008.1.2.4.90")
- || (Transfer == "1.2.840.10008.1.2.4.91") )
- 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;
-
- // Sorry for the patch!
- // XMedCom did the trick to read some nasty GE images ...
- else if (FoundLength == 13) {
- // The following 'if' will be removed when there is no more
- // images on Creatis HDs with a 13 length for Manufacturer...
- if ( (ElVal->GetGroup() != 0x0008) || (ElVal->GetElement() != 0x0070)) {
- // end of remove area
- FoundLength =10;
- }
- }
- // to fix some garbage 'Leonardo' Siemens images
- // May be commented out to avoid overhead
- else if ( (ElVal->GetGroup() == 0x0009)
- &&
- ( (ElVal->GetElement() == 0x1113) || (ElVal->GetElement() == 0x1114) ) )
- FoundLength =4;
-
- ElVal->SetLength(FoundLength);
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- *
- * @return
- */
- 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 && g!=0xb00c ) /*for bogus header */ {
- char msg[100]; // for sprintf. Sorry
- sprintf(msg,"wrong group (%04x) for an item sequence (%04x,%04x)\n",g, g,n);
- dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",msg);
- errno = 1;
- return 0;
- }
- if ( n == 0xe0dd || ( g==0xb00c && n==0x0eb6 ) ) /* for bogus header */
- FoundSequenceDelimiter = true;
- else if ( n != 0xe000 ){
- char msg[100]; // for sprintf. Sorry
- sprintf(msg,"wrong element (%04x) for an item sequence (%04x,%04x)\n",
- n, g,n);
- dbg.Verbose(1, "gdcmHeader::FindLengthOB: ",msg);
- 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;
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- *
- * @return
- */
- void gdcmHeader::FindLength (gdcmElValue * ElVal) {
- guint16 element = ElVal->GetElement();
- guint16 group = ElVal->GetGroup();
- std::string vr = ElVal->GetVR();
- guint16 length16;
- if( (element == 0x0010) && (group == 0x7fe0) ) {
- dbg.SetDebug(0);
- dbg.Verbose(2, "gdcmHeader::FindLength: ",
- "we reached 7fe0 0010");
- }
-
- 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 already 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 == 0x0000) && (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.");
- // Actually, length= 0xffff means that we deal with
- // Unknown Sequence Length
- }
-
- 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 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);
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief Swaps the bytes so they agree with the processor order
- * @return The properly swaped 16 bits integer.
- */
-guint16 gdcmHeader::SwapShort(guint16 a) {
- if ( (sw==4321) || (sw==2143) )
- a =(((a<<8) & 0x0ff00) | ((a>>8)&0x00ff));
- return (a);
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- *
- * @return
- */
- void gdcmHeader::SkipBytes(guint32 NBytes) {
- //FIXME don't dump the returned value
- (void)fseek(fp, (long)NBytes, SEEK_CUR);
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- * @param ElVal
- * @return
- */
- void gdcmHeader::SkipElementValue(gdcmElValue * ElVal) {
- SkipBytes(ElVal->GetLength());
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- * @param NewSize
- * @return
- */
- void gdcmHeader::SetMaxSizeLoadElementValue(long NewSize) {
- if (NewSize < 0)
- return;
- if ((guint32)NewSize >= (guint32)0xffffffff) {
- MaxSizeLoadElementValue = 0xffffffff;
- return;
- }
- MaxSizeLoadElementValue = NewSize;
-}
-
-/**
- * \ingroup gdcmHeader
- * \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();
- std::string vr= ElVal->GetVR();
- guint32 length = ElVal->GetLength();
- bool SkipLoad = false;
-
- 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;
-
- // 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).
- // Well ...
- // Actually (fffe e000) tells us an Element is beginning
- // (fffe e00d) tells us an Element just ended
- // (fffe e0dd) tells us the current SEQuence just ended
-
- if( group == 0xfffe )
- SkipLoad = true;
-
- if ( SkipLoad ) {
- ElVal->SetLength(0);
- ElVal->SetValue("gdcm::Skipped");
- return;
- }
-
- // 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) {
- std::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.
-
- // 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;
- std::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 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);
-}
-
-/**
- * \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);
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief Reads a supposed to be 16 Bits integer
- * \ (swaps it depending on processor endianity)
- *
- * @return integer acts as a boolean
- */
-guint16 gdcmHeader::ReadInt16(void) {
- guint16 g;
- size_t item_read;
- item_read = fread (&g, (size_t)2,(size_t)1, fp);
- if ( item_read != 1 ) {
- // dbg.Verbose(0, "gdcmHeader::ReadInt16", " Failed to read :");
- // if(feof(fp))
- // dbg.Verbose(0, "gdcmHeader::ReadInt16", " End of File encountered");
- if(ferror(fp))
- dbg.Verbose(0, "gdcmHeader::ReadInt16", " File Error");
- errno = 1;
- return 0;
- }
- errno = 0;
- g = SwapShort(g);
- return g;
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief Reads a supposed to be 32 Bits integer
- * \ (swaps it depending on processor endianity)
- *
- * @return
- */
-guint32 gdcmHeader::ReadInt32(void) {
- guint32 g;
- size_t item_read;
- item_read = fread (&g, (size_t)4,(size_t)1, fp);
- if ( item_read != 1 ) {
- //dbg.Verbose(0, "gdcmHeader::ReadInt32", " Failed to read :");
- //if(feof(fp))
- // dbg.Verbose(0, "gdcmHeader::ReadInt32", " End of File encountered");
- if(ferror(fp))
- dbg.Verbose(0, "gdcmHeader::ReadInt32", " File Error");
- errno = 1;
- return 0;
- }
- errno = 0;
- g = SwapLong(g);
- return g;
-}
-
-/**
- * \ingroup gdcmHeader
- * \brief
- *
- * @return
- */
- gdcmElValue* gdcmHeader::GetElValueByNumber(guint16 Group, guint16 Elem) {
-
- gdcmElValue* elValue = PubElValSet.GetElementByNumber(Group, Elem);
- if (!elValue) {
- dbg.Verbose(1, "gdcmHeader::GetElValueByNumber",
- "failed to Locate gdcmElValue");
- return (gdcmElValue*)0;
- }
- return elValue;
-}
-
-/**
- * \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 Value
- * @param Group
- * @param Elem
- * \return integer acts as a boolean
- */
-int gdcmHeader::ReplaceOrCreateByNumber(std::string Value,
- guint16 Group, guint16 Elem ) {
-
- // TODO : FIXME JPRx
- // curieux, non ?
- // on (je) cree une Elvalue ne contenant pas de valeur
- // on l'ajoute au ElValSet
- // on affecte une valeur a cette ElValue a l'interieur du ElValSet
- // --> devrait pouvoir etre fait + simplement ???
- if (CheckIfExistByNumber(Group, Elem) == 0) {
- gdcmElValue* a =NewElValueByNumber(Group, Elem);
- if (a == NULL)
- return 0;
- PubElValSet.Add(a);
- }
- PubElValSet.SetElValueByNumber(Value, Group, Elem);
- return(1);
-}
-
-
-/**
- * \ingroup gdcmHeader
- * \brief Modify (or Creates if not found) an element
- * @param Value new value
- * @param Group
- * @param Elem
- * \return integer acts as a boolean
- *
- */
-int gdcmHeader::ReplaceOrCreateByNumber(char* Value, guint16 Group, guint16 Elem ) {
-
- gdcmElValue* nvElValue=NewElValueByNumber(Group, Elem);
- PubElValSet.Add(nvElValue);
- std::string v = Value;
- PubElValSet.SetElValueByNumber(v, Group, Elem);
- return(1);
-}
-
-
-/**
- * \ingroup gdcmHeader
- * \brief Set a new value if the invoked element exists
- * Seems to be useless !!!
- * @param Value
- * @param Group
- * @param Elem
- * \return integer acts as a boolean
- */
-int gdcmHeader::ReplaceIfExistByNumber(char* Value, guint16 Group, guint16 Elem ) {
-
- //gdcmElValue* elValue = PubElValSet.GetElementByNumber(Group, Elem);
- std::string v = Value;
- PubElValSet.SetElValueByNumber(v, Group, Elem);
- return 1;
-}
-
-
-/**
- * \ingroup gdcmHeader
- * \brief Checks if a given ElValue (group,number)
- * \ exists in the Public ElValSet
- * @param Group
- * @param Elem
- * @return integer acts as a boolean
- */
-
-int gdcmHeader::CheckIfExistByNumber(guint16 Group, guint16 Elem ) {
- return (PubElValSet.CheckIfExistByNumber(Group, Elem));
- }
-
-/**
- * \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(std::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));
- //if ( (g==0x7fe0) && (n==0x0010) )
- 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 element = ElVal->GetElement();
- std::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 {
- 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;
- std::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(std::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 ("gdcm::Unfound") otherwise.
- */
-std::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 ("gdcm::Unfound") otherwise.
- */
-std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetPubElValByName(std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetPubElValRepByName(std::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 ("gdcm::Unfound") otherwise.
- */
-std::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 ("gdcm::Unfound") otherwise.
- */
-std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetShaElValByName(std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetShaElValRepByName(std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetElValByNumber(guint16 group, guint16 element) {
- std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetElValRepByNumber(guint16 group, guint16 element) {
- std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetElValByName(std::string TagName) {
- std::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 ("gdcm::Unfound") otherwise.
- */
-std::string gdcmHeader::GetElValRepByName(std::string TagName) {
- std::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(std::string content, guint16 group,
- guint16 element)
-
-//TODO : homogeneiser les noms : SetPubElValByNumber
-// qui appelle PubElValSet.SetElValueByNumber
-// pourquoi pas SetPubElValueByNumber ??
-{
-
- 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(std::string content, std::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(std::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 ShadowTagName name of the tag to be modified
- */
-int gdcmHeader::SetShaElValByName(std::string content, std::string ShadowTagName) {
- return ( ShaElValSet.SetElValueByName (content, ShadowTagName) );
-}
-
-/**
- * \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);
- }