X-Git-Url: https://git.creatis.insa-lyon.fr/pubgit/?a=blobdiff_plain;f=src%2FgdcmSeqEntry.cxx;h=fb0dfdfc2110af4526b38cd02d1ae2f2637a54ec;hb=3e6741b39607b3bfc007f152aaa3a4825dd5e13c;hp=06246c1ae5b049e6921ab7ccdfe1252f4376e39a;hpb=5154dc89c0a2a565e9e79024ba8910f405279dd2;p=gdcm.git diff --git a/src/gdcmSeqEntry.cxx b/src/gdcmSeqEntry.cxx index 06246c1a..fb0dfdfc 100644 --- a/src/gdcmSeqEntry.cxx +++ b/src/gdcmSeqEntry.cxx @@ -1,52 +1,286 @@ -// gdcmSeqEntry.cxx -//----------------------------------------------------------------------------- -// +/*========================================================================= + + Program: gdcm + Module: $RCSfile: gdcmSeqEntry.cxx,v $ + Language: C++ + Date: $Date: 2005/11/07 09:46:36 $ + Version: $Revision: 1.62 $ + + Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de + l'Image). All rights reserved. See Doc/License.txt or + http://www.creatis.insa-lyon.fr/Public/Gdcm/License.html for details. + + This software is distributed WITHOUT ANY WARRANTY; without even + the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR + PURPOSE. See the above copyright notices for more information. + +=========================================================================*/ + #include "gdcmSeqEntry.h" +#include "gdcmSQItem.h" #include "gdcmTS.h" #include "gdcmGlobal.h" #include "gdcmUtil.h" +#include "gdcmDebug.h" +#include +#include +#include +namespace gdcm +{ //----------------------------------------------------------------------------- // Constructor / Destructor /** - * \ingroup gdcmSeqEntry - * \brief Constructor from a given gdcmSeqEntry - * @param in Pointer to existing dictionary entry + * \brief Constructor from a given SeqEntry */ -gdcmSeqEntry::gdcmSeqEntry() : gdcmDocEntry( ) { - +SeqEntry::SeqEntry( DictEntry *e ) + : DocEntry(e) +{ + Length = 0; + ReadLength = 0xffffffff; + SQDepthLevel = -1; + DelimitorMode = false; + SeqTerm = NULL; } +/** + * \brief Constructor from a given DocEntry + * @param e Pointer to existing Doc entry + * @param depth depth level of the current Seq entry + */ +SeqEntry::SeqEntry( DocEntry *e, int depth ) + : DocEntry( e->GetDictEntry() ) +{ + Length = 0; + ReadLength = 0xffffffff; + SQDepthLevel = depth; + + ImplicitVR = e->IsImplicitVR(); + Offset = e->GetOffset(); + SeqTerm = NULL; +} /** - * \ingroup gdcmSeqEntry * \brief Canonical destructor. */ -gdcmSeqEntry::~gdcmSeqEntry() +SeqEntry::~SeqEntry() { - for(ListSQItem::iterator cc = items.begin();cc != items.end();++cc) - { - delete *cc; - } + ClearSQItem(); } //----------------------------------------------------------------------------- -// Print +// Public /* - * \ingroup gdcmSeqEntry - * \brief canonical Printer + * \brief canonical Writer + * @param fp pointer to an already open file + * @param filetype type of the file (ACR, ImplicitVR, ExplicitVR, ...) */ +void SeqEntry::WriteContent(std::ofstream *fp, FileType filetype) +{ + uint16_t seq_term_gr = 0xfffe; + uint16_t seq_term_el = 0xe0dd; + uint32_t seq_term_lg = 0xffffffff; + // ignore 'Zero length' Sequences + if ( GetReadLength() == 0 ) + return; + + DocEntry::WriteContent(fp, filetype); + for(ListSQItem::iterator cc = Items.begin(); + cc != Items.end(); + ++cc) + { + (*cc)->WriteContent(fp, filetype); + } + + // we force the writting of a Sequence Delimitation item + // because we wrote the Sequence as a 'no Length' sequence + binary_write(*fp, seq_term_gr); + binary_write(*fp, seq_term_el); + binary_write(*fp, seq_term_lg); +} -//----------------------------------------------------------------------------- -// Public +/** + * \brief Compute the full length of the SeqEntry (not only value + * length) depending on the VR. + */ +uint32_t SeqEntry::ComputeFullLength() +{ + uint32_t l = 12; // Tag (4) + VR (explicit) 4 + 4 (length); + for(ListSQItem::iterator cc = Items.begin(); + cc != Items.end(); + ++cc) + { + l += (*cc)->ComputeFullLength(); + } + l += 8; // seq_term Tag (4) + seq_term_lg (4) + return l; +} + +/** + * \brief adds the passed ITEM to the ITEM chained List for this SeQuence. + * @param sqItem SQItem to be pushed back in the SeqEntry + * @param itemNumber ordinal number of the SQItem + * \note NOT end-user intendend method ! + */ +void SeqEntry::AddSQItem(SQItem *sqItem, int itemNumber) +{ +// FIXME : SQItemNumber is supposed to be the ordinal number of the SQItem +// within the Sequence. +// Either only 'push_back' is allowed, +// and we just have to do something like SeqEntry::lastNb++ +// Or we can add (or remove) anywhere, and SQItemNumber will be broken + sqItem->SetSQItemNumber(itemNumber); + Items.push_back(sqItem); + sqItem->Register(); +} + +/** + * \brief Remove all SQItem. + */ +void SeqEntry::ClearSQItem() +{ + for(ListSQItem::iterator cc = Items.begin(); cc != Items.end(); ++cc) + { + (*cc)->Unregister(); + } + if (SeqTerm) + { + SeqTerm->Unregister(); + } +} + +/** + * \brief Get the first entry while visiting the SeqEntry + * \return The first SQItem if found, otherwhise NULL + */ +SQItem *SeqEntry::GetFirstSQItem() +{ + ItSQItem = Items.begin(); + if (ItSQItem != Items.end()) + return *ItSQItem; + return NULL; +} + +/** + * \brief Get the next SQItem while visiting the SeqEntry + * \note : meaningfull only if GetFirstEntry already called + * \return The next SQItem if found, otherwhise NULL + */ + +SQItem *SeqEntry::GetNextSQItem() +{ + gdcmAssertMacro (ItSQItem != Items.end()) + { + ++ItSQItem; + if (ItSQItem != Items.end()) + return *ItSQItem; + } + return NULL; +} + +/** + * \brief return a pointer to the SQItem referenced by its ordinal number. + * Returns the first item when argument is negative. + * Returns the last item when argument is bigger than the total + * item number. + */ +SQItem *SeqEntry::GetSQItem(int nb) +{ + if (nb<0) + { + return *(Items.begin()); + } + int count = 0 ; + for(ListSQItem::iterator cc = Items.begin(); + cc != Items.end(); + count ++, ++cc) + { + if (count == nb) + { + return *cc; + } + } + return *(Items.end()); +} + +/** + * \brief returns the number of SQItems within the current Sequence + */ +unsigned int SeqEntry::GetNumberOfSQItems() +{ + return Items.size(); +} + +/** + * \brief Sets the Sequence Delimitation Item + * \param e Delimitation item + */ +void SeqEntry::SetDelimitationItem(DocEntry *e) +{ + if( SeqTerm != e ) + { + if( SeqTerm ) + SeqTerm->Unregister(); + SeqTerm = e; + if( SeqTerm ) + SeqTerm->Register(); + } +} //----------------------------------------------------------------------------- // Protected + //----------------------------------------------------------------------------- // Private //----------------------------------------------------------------------------- +// Print +/** + * \brief canonical Printer + */ +void SeqEntry::Print( std::ostream &os, std::string const & ) +{ + // First, Print the Dicom Element itself. + os << "S "; + DocEntry::Print(os); + os << std::endl; + + if (GetReadLength() == 0) + return; + + // Then, Print each SQ Item + for(ListSQItem::iterator cc = Items.begin(); cc != Items.end(); ++cc) + { + (*cc)->SetPrintLevel(PrintLevel); + (*cc)->Print(os); + } + + // at end, print the sequence terminator item, if any + if (DelimitorMode) + { + int i; + for ( i = 0; i < SQDepthLevel; i++ ) + os << " | " ; + os << " --- " << std::endl; + for ( i = 0; i < SQDepthLevel; i++ ) + os << " | " ; + if (SeqTerm != NULL) + { + SeqTerm->SetPrintLevel(PrintLevel); + SeqTerm->Print(os); + os << std::endl; + } + else + { + // fuse + gdcmWarningMacro(" -------- should have a sequence terminator item"); + } + } +} + +//----------------------------------------------------------------------------- +} // end namespace gdcm