Program: gdcm
Module: $RCSfile: gdcmDocument.cxx,v $
Language: C++
- Date: $Date: 2004/11/09 21:55:55 $
- Version: $Revision: 1.119 $
+ Date: $Date: 2005/01/07 08:46:18 $
+ Version: $Revision: 1.162 $
Copyright (c) CREATIS (Centre de Recherche et d'Applications en Traitement de
l'Image). All rights reserved. See Doc/License.txt or
#include "gdcmGlobal.h"
#include "gdcmUtil.h"
#include "gdcmDebug.h"
+#include "gdcmTS.h"
+#include "gdcmException.h"
+#include "gdcmDictSet.h"
+#include "gdcmRLEFramesInfo.h"
+#include "gdcmJPEGFragmentsInfo.h"
+#include "gdcmDocEntrySet.h"
+#include "gdcmSQItem.h"
#include <vector>
#include <iomanip>
namespace gdcm
{
+//-----------------------------------------------------------------------------
static const char *TransferSyntaxStrings[] = {
// Implicit VR Little Endian
"1.2.840.10008.1.2",
+ // Implicit VR Big Endian DLX G.E?
+ "1.2.840.113619.5.2",
// Explicit VR Little Endian
"1.2.840.10008.1.2.1",
// Deflated Explicit VR Little Endian
//-----------------------------------------------------------------------------
// Refer to Document::CheckSwap()
-const unsigned int Document::HEADER_LENGTH_TO_READ = 256;
+//const unsigned int Document::HEADER_LENGTH_TO_READ = 256;
// Refer to Document::SetMaxSizeLoadEntry()
const unsigned int Document::MAX_SIZE_LOAD_ELEMENT_VALUE = 0xfff; // 4096
* \brief constructor
* @param filename file to be opened for parsing
*/
-Document::Document( std::string const & filename ) : ElementSet(-1)
+Document::Document( std::string const &filename ) : ElementSet(-1)
{
SetMaxSizeLoadEntry(MAX_SIZE_LOAD_ELEMENT_VALUE);
Filename = filename;
Initialise();
+ Fp = 0;
if ( !OpenFile() )
{
return;
dbg.Verbose(0, "Document::Document: starting parsing of file: ",
Filename.c_str());
- Fp->seekg( 0, std::ios_base::beg);
+ Fp->seekg( 0, std::ios::beg);
- Fp->seekg(0, std::ios_base::end);
+ Fp->seekg(0, std::ios::end);
long lgt = Fp->tellg();
- Fp->seekg( 0, std::ios_base::beg);
+ Fp->seekg( 0, std::ios::beg);
CheckSwap();
long beg = Fp->tellg();
lgt -= beg;
ParseDES( this, beg, lgt, false); // le Load sera fait a la volee
- Fp->seekg( 0, std::ios_base::beg);
+ Fp->seekg( 0, std::ios::beg);
// Load 'non string' values
SetEntryByNumber(rows , 0x0028, 0x0011);
}
// ----------------- End of ACR-LibIDO kludge ------------------
-
- PrintLevel = 1; // 'Medium' print level by default
}
/**
*/
Document::Document() : ElementSet(-1)
{
+ Fp = 0;
+
SetMaxSizeLoadEntry(MAX_SIZE_LOAD_ELEMENT_VALUE);
Initialise();
- PrintLevel = 1; // 'Medium' print level by default
+ SwapCode = 0;
+ Filetype = ExplicitVR;
}
/**
RefPubDict = NULL;
RefShaDict = NULL;
- // Recursive clean up of sequences
- for (TagDocEntryHT::const_iterator it = TagHT.begin();
- it != TagHT.end(); ++it )
- {
- //delete it->second; //temp remove
- }
- TagHT.clear();
delete RLEInfo;
delete JPEGInfo;
}
* \brief Prints The Dict Entries of THE public Dicom Dictionary
* @return
*/
-void Document::PrintPubDict(std::ostream & os)
+void Document::PrintPubDict(std::ostream &os)
{
+ RefPubDict->SetPrintLevel(PrintLevel);
RefPubDict->Print(os);
}
* \brief Prints The Dict Entries of THE shadow Dicom Dictionary
* @return
*/
-void Document::PrintShaDict(std::ostream & os)
+void Document::PrintShaDict(std::ostream &os)
{
+ RefShaDict->SetPrintLevel(PrintLevel);
RefShaDict->Print(os);
}
/**
* \brief Get the public dictionary used
*/
-Dict* Document::GetPubDict()
+Dict *Document::GetPubDict()
{
return RefPubDict;
}
/**
* \brief Get the shadow dictionary used
*/
-Dict* Document::GetShaDict()
+Dict *Document::GetShaDict()
{
return RefShaDict;
}
/**
* \brief Set the shadow dictionary used
- * \param dict dictionary to use in shadow
+ * @param dict dictionary to use in shadow
*/
bool Document::SetShaDict(Dict *dict)
{
/**
* \brief Set the shadow dictionary used
- * \param dictName name of the dictionary to use in shadow
+ * @param dictName name of the dictionary to use in shadow
*/
-bool Document::SetShaDict(DictKey const & dictName)
+bool Document::SetShaDict(DictKey const &dictName)
{
RefShaDict = Global::GetDicts()->GetDict(dictName);
return !RefShaDict;
return true;
}
-
/**
- * \brief Internal function that checks whether the Transfer Syntax given
- * as argument is the one present in the current document.
- * @param syntaxToCheck The transfert syntax we need to check against.
- * @return True when SyntaxToCheck corresponds to the Transfer Syntax of
- * the current document. False either when the document contains
- * no Transfer Syntax, or when the Tranfer Syntaxes doesn't match.
+ * \brief Accessor to the Transfer Syntax (when present) of the
+ * current document (it internally handles reading the
+ * value from disk when only parsing occured).
+ * @return The encountered Transfer Syntax of the current document.
*/
TransferSyntaxType Document::GetTransferSyntax()
{
// The entry might be present but not loaded (parsing and loading
// happen at different stages): try loading and proceed with check...
LoadDocEntrySafe(entry);
- if (ValEntry* valEntry = dynamic_cast< ValEntry* >(entry) )
+ if (ValEntry *valEntry = dynamic_cast< ValEntry* >(entry) )
{
std::string transfer = valEntry->GetValue();
// The actual transfer (as read from disk) might be padded. We
// for brain damaged headers
return UnknownTS;
}
- while ( !isdigit(transfer[transfer.length()-1]) )
+ while ( !isdigit((unsigned char)transfer[transfer.length()-1]) )
{
transfer.erase(transfer.length()-1, 1);
}
* checks the preamble when existing.
* @return The FILE pointer on success.
*/
-std::ifstream* Document::OpenFile()
+std::ifstream *Document::OpenFile()
{
- Fp = new std::ifstream(Filename.c_str(), std::ios::in | std::ios::binary);
+ if (Filename.length() == 0)
+ {
+ return 0;
+ }
+
+ if(Fp)
+ {
+ dbg.Verbose( 0,
+ "Document::OpenFile is already opened when opening: ",
+ Filename.c_str());
+ }
- if(!Fp)
+ Fp = new std::ifstream(Filename.c_str(), std::ios::in | std::ios::binary);
+ if( ! *Fp )
{
dbg.Verbose( 0,
"Document::OpenFile cannot open file: ",
Filename.c_str());
+ delete Fp;
+ Fp = 0;
return 0;
}
uint16_t zero;
- Fp->read((char*)&zero, (size_t)2 );
+ Fp->read((char*)&zero, (size_t)2);
+ if( Fp->eof() )
+ {
+ CloseFile();
+ return 0;
+ }
- //ACR -- or DICOM with no Preamble --
- if( zero == 0x0008 || zero == 0x0800 || zero == 0x0002 || zero == 0x0200 )
+ //ACR -- or DICOM with no Preamble; may start with a Shadow Group --
+ if(
+ zero == 0x0001 || zero == 0x0100 || zero == 0x0002 || zero == 0x0200 ||
+ zero == 0x0003 || zero == 0x0300 || zero == 0x0004 || zero == 0x0400 ||
+ zero == 0x0005 || zero == 0x0500 || zero == 0x0006 || zero == 0x0600 ||
+ zero == 0x0007 || zero == 0x0700 || zero == 0x0008 || zero == 0x0800 )
{
return Fp;
}
//DICOM
- Fp->seekg(126L, std::ios_base::cur);
+ Fp->seekg(126L, std::ios::cur);
char dicm[4];
Fp->read(dicm, (size_t)4);
+ if( Fp->eof() )
+ {
+ CloseFile();
+ return 0;
+ }
if( memcmp(dicm, "DICM", 4) == 0 )
{
return Fp;
}
- Fp->close();
+ CloseFile();
dbg.Verbose( 0,
"Document::OpenFile not DICOM/ACR (missing preamble)",
Filename.c_str());
*/
bool Document::CloseFile()
{
- Fp->close();
- delete Fp;
- Fp = 0;
+ if( Fp )
+ {
+ Fp->close();
+ delete Fp;
+ Fp = 0;
+ }
- return true; //FIXME how do we detect a non-close ifstream ?
+ return true; //FIXME how do we detect a non-close ifstream ?
}
/**
* (ACR-NEMA, ExplicitVR, ImplicitVR)
* \return Always true.
*/
-void Document::Write(std::ofstream* fp, FileType filetype)
+void Document::WriteContent(std::ofstream *fp, FileType filetype)
{
/// \todo move the following lines (and a lot of others, to be written)
/// to a future function CheckAndCorrectHeader
/// (necessary if user wants to write a DICOM V3 file
/// starting from an ACR-NEMA (V2) Header
- if (filetype == ImplicitVR)
- {
- std::string ts =
- Util::DicomString( TransferSyntaxStrings[ImplicitVRLittleEndian] );
- ReplaceOrCreateByNumber(ts, 0x0002, 0x0010);
-
- /// \todo Refer to standards on page 21, chapter 6.2
- /// "Value representation": values with a VR of UI shall be
- /// padded with a single trailing null
- /// in the following case we have to padd manually with a 0
-
- SetEntryLengthByNumber(18, 0x0002, 0x0010);
- }
-
- if (filetype == ExplicitVR)
+ if ( filetype == ImplicitVR || filetype == ExplicitVR )
{
- std::string ts =
- Util::DicomString( TransferSyntaxStrings[ExplicitVRLittleEndian] );
- ReplaceOrCreateByNumber(ts, 0x0002, 0x0010); //LEAK
-
- /// \todo Refer to standards on page 21, chapter 6.2
- /// "Value representation": values with a VR of UI shall be
- /// padded with a single trailing null
- /// Dans le cas suivant on doit pader manuellement avec un 0
-
- SetEntryLengthByNumber(20, 0x0002, 0x0010);
+ // writing Dicom File Preamble
+ char filePreamble[128];
+ memset(filePreamble, 0, 128);
+ fp->write(filePreamble, 128);
+ fp->write("DICM", 4);
}
-
+
/**
* \todo rewrite later, if really usefull
* - 'Group Length' element is optional in DICOM
* UpdateGroupLength(true,ACR);
*/
- ElementSet::Write(fp, filetype); // This one is recursive
-
+ ElementSet::WriteContent(fp, filetype); // This one is recursive
}
/**
- * \brief Modifies the value of a given Header Entry (Dicom Element)
+ * \brief Modifies the value of a given Doc Entry (Dicom Element)
* when it exists. Create it with the given value when unexistant.
* @param value (string) Value to be set
* @param group Group number of the Entry
* @param elem Element number of the Entry
- * @param VR V(alue) R(epresentation) of the Entry -if private Entry-
+ * @param vr V(alue) R(epresentation) of the Entry -if private Entry-
* \return pointer to the modified/created Header Entry (NULL when creation
* failed).
*/
-ValEntry* Document::ReplaceOrCreateByNumber(
- std::string const & value,
- uint16_t group,
- uint16_t elem,
- TagName const & vr )
-{
- ValEntry* valEntry = 0;
- DocEntry* currentEntry = GetDocEntryByNumber( group, elem);
+ValEntry *Document::ReplaceOrCreateByNumber(std::string const &value,
+ uint16_t group,
+ uint16_t elem,
+ TagName const &vr )
+{
+ ValEntry *valEntry = 0;
+ DocEntry *currentEntry = GetDocEntryByNumber( group, elem);
- if (!currentEntry)
+ if (currentEntry)
{
- // check if (group,element) DictEntry exists
- // if it doesn't, create an entry in DictSet::VirtualEntry
- // and use it
+ valEntry = dynamic_cast< ValEntry* >(currentEntry);
- // Find out if the tag we received is in the dictionaries:
- Dict *pubDict = Global::GetDicts()->GetDefaultPubDict();
- DictEntry* dictEntry = pubDict->GetDictEntryByNumber(group, elem);
- if (!dictEntry)
- {
- currentEntry = NewDocEntryByNumber(group, elem, vr);
- }
- else
- {
- currentEntry = NewDocEntryByNumber(group, elem);
- }
+ // Verify the VR
+ if( valEntry )
+ if( valEntry->GetVR()!=vr )
+ valEntry=NULL;
- if (!currentEntry)
- {
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: call to"
- " NewDocEntryByNumber failed.");
- return NULL;
- }
- valEntry = new ValEntry(currentEntry);
- if ( !AddEntry(valEntry))
- {
- delete valEntry;
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: AddEntry"
- " failed allthough this is a creation.");
- }
- // This is the reason why NewDocEntryByNumber are a real
- // bad habit !!! FIXME
- delete currentEntry;
- }
- else
- {
- valEntry = dynamic_cast< ValEntry* >(currentEntry);
- if ( !valEntry ) // Euuuuh? It wasn't a ValEntry
- // then we change it to a ValEntry ?
- // Shouldn't it be considered as an error ?
+ // if currentEntry doesn't correspond to the requested valEntry
+ if( !valEntry)
{
- // We need to promote the DocEntry to a ValEntry:
- valEntry = new ValEntry(currentEntry);
if (!RemoveEntry(currentEntry))
{
- delete valEntry;
dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: removal"
" of previous DocEntry failed.");
- return NULL;
- }
- if ( !AddEntry(valEntry))
- {
- delete valEntry;
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: adding"
- " promoted ValEntry failed.");
+
return NULL;
}
}
}
- SetEntryByNumber(value, group, elem);
+ // Create a new valEntry if necessary
+ if (!valEntry)
+ {
+ valEntry = NewValEntryByNumber(group, elem, vr);
+
+ if ( !AddEntry(valEntry))
+ {
+ dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: AddEntry"
+ " failed allthough this is a creation.");
+
+ delete valEntry;
+ return NULL;
+ }
+ }
+ // Set the binEntry value
+ SetEntry(value, valEntry);
return valEntry;
}
/*
* \brief Modifies the value of a given Header Entry (Dicom Element)
* when it exists. Create it with the given value when unexistant.
+ * A copy of the binArea is made to be kept in the Document.
* @param binArea (binary) value to be set
* @param Group Group number of the Entry
* @param Elem Element number of the Entry
+ * @param vr V(alue) R(epresentation) of the Entry -if private Entry-
* \return pointer to the modified/created Header Entry (NULL when creation
* failed).
*/
-BinEntry* Document::ReplaceOrCreateByNumber(
- uint8_t* binArea,
- int lgth,
- uint16_t group,
- uint16_t elem,
- TagName const & vr )
+BinEntry *Document::ReplaceOrCreateByNumber(uint8_t *binArea,
+ int lgth,
+ uint16_t group,
+ uint16_t elem,
+ TagName const &vr )
{
- BinEntry* binEntry = 0;
- DocEntry* currentEntry = GetDocEntryByNumber( group, elem);
- if (!currentEntry)
- {
+ BinEntry *binEntry = 0;
+ DocEntry *currentEntry = GetDocEntryByNumber( group, elem);
- // check if (group,element) DictEntry exists
- // if it doesn't, create an entry in DictSet::VirtualEntry
- // and use it
+ // Verify the currentEntry
+ if (currentEntry)
+ {
+ binEntry = dynamic_cast< BinEntry* >(currentEntry);
- // Find out if the tag we received is in the dictionaries:
- Dict *pubDict = Global::GetDicts()->GetDefaultPubDict();
- DictEntry *dictEntry = pubDict->GetDictEntryByNumber(group, elem);
+ // Verify the VR
+ if( binEntry )
+ if( binEntry->GetVR()!=vr )
+ binEntry=NULL;
- if (!dictEntry)
- {
- currentEntry = NewDocEntryByNumber(group, elem, vr);
- }
- else
- {
- currentEntry = NewDocEntryByNumber(group, elem);
- }
- if (!currentEntry)
+ // if currentEntry doesn't correspond to the requested valEntry
+ if( !binEntry)
{
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: call to"
- " NewDocEntryByNumber failed.");
- return NULL;
+ if (!RemoveEntry(currentEntry))
+ {
+ dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: removal"
+ " of previous DocEntry failed.");
+
+ return NULL;
+ }
}
- binEntry = new BinEntry(currentEntry);
+ }
+
+ // Create a new binEntry if necessary
+ if (!binEntry)
+ {
+ binEntry = NewBinEntryByNumber(group, elem, vr);
+
if ( !AddEntry(binEntry))
{
dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: AddEntry"
" failed allthough this is a creation.");
+
+ delete binEntry;
+ return NULL;
}
}
+
+ // Set the binEntry value
+ uint8_t *tmpArea;
+ if (lgth>0 && binArea)
+ {
+ tmpArea = new uint8_t[lgth];
+ memcpy(tmpArea,binArea,lgth);
+ }
else
{
- binEntry = dynamic_cast< BinEntry* >(currentEntry);
- if ( !binEntry ) // Euuuuh? It wasn't a BinEntry
- // then we change it to a BinEntry ?
- // Shouldn't it be considered as an error ?
+ tmpArea = 0;
+ }
+ if (!SetEntry(tmpArea,lgth,binEntry))
+ {
+ if (tmpArea)
{
- // We need to promote the DocEntry to a BinEntry:
- binEntry = new BinEntry(currentEntry);
- if (!RemoveEntry(currentEntry))
- {
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: removal"
- " of previous DocEntry failed.");
- return NULL;
- }
- if ( !AddEntry(binEntry))
- {
- dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: adding"
- " promoted BinEntry failed.");
- return NULL;
- }
+ delete[] tmpArea;
}
}
- SetEntryByNumber(binArea, lgth, group, elem);
-
return binEntry;
}
-
/*
* \brief Modifies the value of a given Header Entry (Dicom Element)
* when it exists. Create it when unexistant.
* \return pointer to the modified/created SeqEntry (NULL when creation
* failed).
*/
-SeqEntry* Document::ReplaceOrCreateByNumber( uint16_t group, uint16_t elem)
+SeqEntry *Document::ReplaceOrCreateByNumber( uint16_t group, uint16_t elem)
{
- SeqEntry* b = 0;
- DocEntry* a = GetDocEntryByNumber( group, elem);
- if (!a)
+ SeqEntry *seqEntry = 0;
+ DocEntry *currentEntry = GetDocEntryByNumber( group, elem);
+
+ // Verify the currentEntry
+ if (currentEntry)
{
- a = NewSeqEntryByNumber(group, elem);
- if (!a)
+ seqEntry = dynamic_cast< SeqEntry* >(currentEntry);
+
+ // Verify the VR
+ if( seqEntry )
+ if( seqEntry->GetVR()!="SQ" )
+ seqEntry=NULL;
+
+ // if currentEntry doesn't correspond to the requested valEntry
+ if( !seqEntry)
{
- return 0;
+ if (!RemoveEntry(currentEntry))
+ {
+ dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: removal"
+ " of previous DocEntry failed.");
+
+ return NULL;
+ }
}
+ }
- b = new SeqEntry(a, 1); // FIXME : 1 (Depth)
- AddEntry(b);
- }
- return b;
+ // Create a new seqEntry if necessary
+ if (!seqEntry)
+ {
+ seqEntry = NewSeqEntryByNumber(group, elem);
+
+ if ( !AddEntry(seqEntry))
+ {
+ dbg.Verbose(0, "Document::ReplaceOrCreateByNumber: AddEntry"
+ " failed allthough this is a creation.");
+
+ delete seqEntry;
+ return NULL;
+ }
+ }
+
+ return seqEntry;
}
/**
* @param elem element number of the Entry
* \return boolean
*/
-bool Document::ReplaceIfExistByNumber(std::string const & value,
+bool Document::ReplaceIfExistByNumber(std::string const &value,
uint16_t group, uint16_t elem )
{
SetEntryByNumber(value, group, elem);
return true;
}
+std::string Document::GetTransferSyntaxValue(TransferSyntaxType type)
+{
+ return TransferSyntaxStrings[type];
+}
+
//-----------------------------------------------------------------------------
// Protected
return TagHT.count(key) != 0;
}
-/**
- * \brief Searches within Header Entries (Dicom Elements) parsed with
- * the public and private dictionaries
- * for the element value of a given tag.
- * \warning Don't use any longer : use GetPubEntryByName
- * @param tagName name of the searched element.
- * @return Corresponding element value when it exists,
- * and the string GDCM_UNFOUND ("gdcm::Unfound") otherwise.
- */
-std::string Document::GetEntryByName(TagName const & tagName)
-{
- DictEntry* dictEntry = RefPubDict->GetDictEntryByName(tagName);
- if( !dictEntry )
- {
- return GDCM_UNFOUND;
- }
-
- return GetEntryByNumber(dictEntry->GetGroup(),dictEntry->GetElement());
-}
-
-/**
- * \brief Searches within Header Entries (Dicom Elements) parsed with
- * the public and private dictionaries
- * 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 searched element.
- * @return Corresponding element value representation when it exists,
- * and the string GDCM_UNFOUND ("gdcm::Unfound") otherwise.
- */
-std::string Document::GetEntryVRByName(TagName const& tagName)
-{
- DictEntry *dictEntry = RefPubDict->GetDictEntryByName(tagName);
- if( dictEntry == NULL)
- {
- return GDCM_UNFOUND;
- }
-
- DocEntry* elem = GetDocEntryByNumber(dictEntry->GetGroup(),
- dictEntry->GetElement());
- return elem->GetVR();
-}
/**
* \brief Searches within Header Entries (Dicom Elements) parsed with
std::string Document::GetEntryByNumber(uint16_t group, uint16_t element)
{
TagKey key = DictEntry::TranslateToKey(group, element);
- /// \todo use map methods, instead of multimap JPR
if ( !TagHT.count(key))
{
return GDCM_UNFOUND;
*/
std::string Document::GetEntryVRByNumber(uint16_t group, uint16_t element)
{
- DocEntry* elem = GetDocEntryByNumber(group, element);
+ DocEntry *elem = GetDocEntryByNumber(group, element);
if ( !elem )
{
return GDCM_UNFOUND;
*/
int Document::GetEntryLengthByNumber(uint16_t group, uint16_t element)
{
- DocEntry* elem = GetDocEntryByNumber(group, element);
+ DocEntry *elem = GetDocEntryByNumber(group, element);
if ( !elem )
{
return -2; //magic number
}
return elem->GetLength();
}
-/**
- * \brief Sets the value (string) of the Header Entry (Dicom Element)
- * @param content string value of the Dicom Element
- * @param tagName name of the searched Dicom Element.
- * @return true when found
- */
-bool Document::SetEntryByName(std::string const & content,
- TagName const & tagName)
-{
- DictEntry *dictEntry = RefPubDict->GetDictEntryByName(tagName);
- if( !dictEntry )
- {
- return false;
- }
-
- return SetEntryByNumber(content,dictEntry->GetGroup(),
- dictEntry->GetElement());
-}
/**
* \brief Accesses an existing DocEntry (i.e. a Dicom Element)
bool Document::SetEntryByNumber(std::string const& content,
uint16_t group, uint16_t element)
{
- int c;
- int l;
-
- ValEntry* valEntry = GetValEntryByNumber(group, element);
- if (!valEntry )
+ ValEntry *entry = GetValEntryByNumber(group, element);
+ if (!entry )
{
dbg.Verbose(0, "Document::SetEntryByNumber: no corresponding",
" ValEntry (try promotion first).");
return false;
}
- // Non even content must be padded with a space (020H)...
- std::string finalContent = Util::DicomString( content.c_str() );
- assert( !(finalContent.size() % 2) );
- valEntry->SetValue(finalContent);
-
- // Integers have a special treatement for their length:
-
- l = finalContent.length();
- if ( l != 0) // To avoid to be cheated by 'zero length' integers
- {
- VRKey vr = valEntry->GetVR();
- if( vr == "US" || vr == "SS" )
- {
- // for multivaluated items
- c = Util::CountSubstring(content, "\\") + 1;
- l = c*2;
- }
- else if( vr == "UL" || vr == "SL" )
- {
- // for multivaluated items
- c = Util::CountSubstring(content, "\\") + 1;
- l = c*4;;
- }
- }
- valEntry->SetLength(l);
- return true;
+ return SetEntry(content,entry);
}
/**
bool Document::SetEntryByNumber(uint8_t*content, int lgth,
uint16_t group, uint16_t element)
{
- (void)lgth; //not used
- TagKey key = DictEntry::TranslateToKey(group, element);
- if ( !TagHT.count(key))
+ BinEntry *entry = GetBinEntryByNumber(group, element);
+ if (!entry )
{
+ dbg.Verbose(0, "Document::SetEntryByNumber: no corresponding",
+ " ValEntry (try promotion first).");
return false;
}
-/* Hope Binary field length is *never* wrong
- if(lgth%2) // Non even length are padded with a space (020H).
- {
- lgth++;
- //content = content + '\0'; // fing a trick to enlarge a binary field?
- }
-*/
- BinEntry* a = (BinEntry *)TagHT[key];
- a->SetBinArea(content);
- a->SetLength(lgth);
- a->SetValue(GDCM_BINLOADED);
-
- return true;
+ return SetEntry(content,lgth,entry);
}
/**
* \brief Accesses an existing DocEntry (i.e. a Dicom Element)
- * in the PubDocEntrySet of this instance
- * through it's (group, element) and modifies it's length with
- * the given value.
- * \warning Use with extreme caution.
- * @param l new length to substitute with
- * @param group group number of the Entry to modify
- * @param element element number of the Entry to modify
- * @return true on success, false otherwise.
+ * and modifies it's content with the given value.
+ * @param content new value (string) to substitute with
+ * @param entry Entry to be modified
*/
-bool Document::SetEntryLengthByNumber(uint32_t l,
- uint16_t group, uint16_t element)
+bool Document::SetEntry(std::string const &content,ValEntry *entry)
{
- /// \todo use map methods, instead of multimap JPR
- TagKey key = DictEntry::TranslateToKey(group, element);
- if ( !TagHT.count(key) )
+ if(entry)
{
- return false;
- }
- if ( l % 2 )
- {
- l++; // length must be even
+ entry->SetValue(content);
+ return true;
}
- ( ((TagHT.equal_range(key)).first)->second )->SetLength(l);
-
- return true ;
+ return false;
}
/**
- * \brief Gets (from Header) the offset of a 'non string' element value
- * (LoadElementValues has already be executed)
- * @param group group number of the Entry
- * @param elem element number of the Entry
- * @return File Offset of the Element Value
+ * \brief Accesses an existing BinEntry (i.e. a Dicom Element)
+ * and modifies it's content with the given value.
+ * @param content new value (void* -> uint8_t*) to substitute with
+ * @param entry Entry to be modified
+ * @param lgth new value length
*/
-size_t Document::GetEntryOffsetByNumber(uint16_t group, uint16_t elem)
+bool Document::SetEntry(uint8_t *content, int lgth, BinEntry *entry)
{
- DocEntry* entry = GetDocEntryByNumber(group, elem);
- if (!entry)
+ if(entry)
{
- dbg.Verbose(1, "Document::GetDocEntryByNumber: no entry present.");
- return 0;
+ // Hope Binary field length is *never* wrong
+ /*if(lgth%2) // Non even length are padded with a space (020H).
+ {
+ lgth++;
+ //content = content + '\0'; // fing a trick to enlarge a binary field?
+ }*/
+
+ entry->SetBinArea(content);
+ entry->SetLength(lgth);
+ entry->SetValue(GDCM_BINLOADED);
+ return true;
}
- return entry->GetOffset();
+ return false;
}
/**
* @param elem element number of the Entry
* @return Pointer to the 'non string' area
*/
-void* Document::GetEntryBinAreaByNumber(uint16_t group, uint16_t elem)
+void *Document::GetEntryBinAreaByNumber(uint16_t group, uint16_t elem)
{
- DocEntry* entry = GetDocEntryByNumber(group, elem);
+ DocEntry *entry = GetDocEntryByNumber(group, elem);
if (!entry)
{
dbg.Verbose(1, "Document::GetDocEntryByNumber: no entry");
return 0;
}
- if ( BinEntry* binEntry = dynamic_cast<BinEntry*>(entry) )
+ if ( BinEntry *binEntry = dynamic_cast<BinEntry*>(entry) )
{
return binEntry->GetBinArea();
}
* @param group group number of the Entry
* @param elem element number of the Entry
*/
-void* Document::LoadEntryBinArea(uint16_t group, uint16_t elem)
+void Document::LoadEntryBinArea(uint16_t group, uint16_t elem)
{
+ // Search the corresponding DocEntry
DocEntry *docElement = GetDocEntryByNumber(group, elem);
if ( !docElement )
- {
- return NULL;
- }
- size_t o =(size_t)docElement->GetOffset();
- Fp->seekg( o, std::ios_base::beg);
- size_t l = docElement->GetLength();
- uint8_t* a = new uint8_t[l];
- if(!a)
- {
- dbg.Verbose(0, "Document::LoadEntryBinArea cannot allocate a");
- return NULL;
- }
- Fp->read((char*)a, l);
- if( Fp->fail() || Fp->eof() )//Fp->gcount() == 1
- {
- delete[] a;
- return NULL;
- }
- /// \todo Drop any already existing void area! JPR
- if( !SetEntryBinAreaByNumber( a, group, elem ) )
- {
- dbg.Verbose(0, "Document::LoadEntryBinArea setting failed.");
- }
- return a;
+ return;
+
+ BinEntry *binElement = dynamic_cast<BinEntry *>(docElement);
+ if( !binElement )
+ return;
+
+ LoadEntryBinArea(binElement);
}
+
/**
* \brief Loads (from disk) the element content
* when a string is not suitable
* @param element Entry whose binArea is going to be loaded
*/
-void* Document::LoadEntryBinArea(BinEntry* element)
+void Document::LoadEntryBinArea(BinEntry *element)
{
+ if(element->GetBinArea())
+ return;
+
+ bool openFile = !Fp;
+ if(openFile)
+ OpenFile();
+
size_t o =(size_t)element->GetOffset();
- Fp->seekg(o, std::ios_base::beg);
+ Fp->seekg(o, std::ios::beg);
+
size_t l = element->GetLength();
- uint8_t* a = new uint8_t[l];
+ uint8_t *a = new uint8_t[l];
if( !a )
{
dbg.Verbose(0, "Document::LoadEntryBinArea cannot allocate a");
- return NULL;
+ return;
}
- element->SetBinArea((uint8_t*)a);
+
/// \todo check the result
Fp->read((char*)a, l);
if( Fp->fail() || Fp->eof()) //Fp->gcount() == 1
{
delete[] a;
- return NULL;
+ return;
}
- return a;
+ element->SetBinArea(a);
+
+ if(openFile)
+ CloseFile();
}
/**
* @param element Element number of the searched Dicom Element
* @return
*/
-bool Document::SetEntryBinAreaByNumber(uint8_t* area,
+/*bool Document::SetEntryBinAreaByNumber(uint8_t *area,
uint16_t group, uint16_t element)
{
- DocEntry* currentEntry = GetDocEntryByNumber(group, element);
+ DocEntry *currentEntry = GetDocEntryByNumber(group, element);
if ( !currentEntry )
{
return false;
}
- if ( BinEntry* binEntry = dynamic_cast<BinEntry*>(currentEntry) )
+
+ if ( BinEntry *binEntry = dynamic_cast<BinEntry*>(currentEntry) )
{
binEntry->SetBinArea( area );
return true;
}
- return true;
-}
-
-/**
- * \brief Update the entries with the shadow dictionary.
- * Only non even entries are analyzed
- */
-void Document::UpdateShaEntries()
-{
- //DictEntry *entry;
- std::string vr;
-
- /// \todo TODO : still any use to explore recursively the whole structure?
-/*
- for(ListTag::iterator it=listEntries.begin();
- it!=listEntries.end();
- ++it)
- {
- // Odd group => from public dictionary
- if((*it)->GetGroup()%2==0)
- continue;
-
- // Peer group => search the corresponding dict entry
- if(RefShaDict)
- entry=RefShaDict->GetDictEntryByNumber((*it)->GetGroup(),(*it)->GetElement());
- else
- entry=NULL;
-
- if((*it)->IsImplicitVR())
- vr="Implicit";
- else
- vr=(*it)->GetVR();
-
- (*it)->SetValue(GetDocEntryUnvalue(*it)); // to go on compiling
- if(entry){
- // Set the new entry and the new value
- (*it)->SetDictEntry(entry);
- CheckDocEntryVR(*it,vr);
-
- (*it)->SetValue(GetDocEntryValue(*it)); // to go on compiling
-
- }
- else
- {
- // Remove precedent value transformation
- (*it)->SetDictEntry(NewVirtualDictEntry((*it)->GetGroup(),(*it)->GetElement(),vr));
- }
- }
-*/
-}
-
-/**
- * \brief Searches within the Header Entries for a Dicom Element of
- * a given tag.
- * @param tagName name of the searched Dicom Element.
- * @return Corresponding Dicom Element when it exists, and NULL
- * otherwise.
- */
-DocEntry* Document::GetDocEntryByName(TagName const & tagName)
-{
- DictEntry *dictEntry = RefPubDict->GetDictEntryByName(tagName);
- if( !dictEntry )
- {
- return NULL;
- }
- return GetDocEntryByNumber(dictEntry->GetGroup(),dictEntry->GetElement());
-}
+ return false;
+}*/
/**
* \brief retrieves a Dicom Element (the first one) using (group, element)
* @param element Element number of the searched Dicom Element
* @return
*/
-DocEntry* Document::GetDocEntryByNumber(uint16_t group, uint16_t element)
+DocEntry *Document::GetDocEntryByNumber(uint16_t group, uint16_t element)
{
TagKey key = DictEntry::TranslateToKey(group, element);
if ( !TagHT.count(key))
* ValEntry.
* @return When present, the corresponding ValEntry.
*/
-ValEntry* Document::GetValEntryByNumber(uint16_t group, uint16_t element)
+ValEntry *Document::GetValEntryByNumber(uint16_t group, uint16_t element)
{
- DocEntry* currentEntry = GetDocEntryByNumber(group, element);
+ DocEntry *currentEntry = GetDocEntryByNumber(group, element);
if ( !currentEntry )
{
return 0;
}
- if ( ValEntry* valEntry = dynamic_cast<ValEntry*>(currentEntry) )
+ if ( ValEntry *entry = dynamic_cast<ValEntry*>(currentEntry) )
{
- return valEntry;
+ return entry;
}
dbg.Verbose(0, "Document::GetValEntryByNumber: unfound ValEntry.");
return 0;
}
+/**
+ * \brief Same as \ref Document::GetDocEntryByNumber except it only
+ * returns a result when the corresponding entry is of type
+ * BinEntry.
+ * @return When present, the corresponding BinEntry.
+ */
+BinEntry *Document::GetBinEntryByNumber(uint16_t group, uint16_t element)
+{
+ DocEntry *currentEntry = GetDocEntryByNumber(group, element);
+ if ( !currentEntry )
+ {
+ return 0;
+ }
+ if ( BinEntry *entry = dynamic_cast<BinEntry*>(currentEntry) )
+ {
+ return entry;
+ }
+ dbg.Verbose(0, "Document::GetBinEntryByNumber: unfound BinEntry.");
+
+ return 0;
+}
+
/**
* \brief Loads the element while preserving the current
- * underlying file position indicator as opposed to
+ * underlying file position indicator as opposed to
* to LoadDocEntry that modifies it.
* @param entry Header Entry whose value shall be loaded.
* @return
*/
-void Document::LoadDocEntrySafe(DocEntry * entry)
+void Document::LoadDocEntrySafe(DocEntry *entry)
{
- long PositionOnEntry = Fp->tellg();
- LoadDocEntry(entry);
- Fp->seekg(PositionOnEntry, std::ios_base::beg);
+ if(Fp)
+ {
+ long PositionOnEntry = Fp->tellg();
+ LoadDocEntry(entry);
+ Fp->seekg(PositionOnEntry, std::ios::beg);
+ }
}
/**
long l_max, bool delim_mode)
{
DocEntry *newDocEntry = 0;
-
+ ValEntry *newValEntry;
+ BinEntry *newBinEntry;
+ SeqEntry *newSeqEntry;
+ VRKey vr;
+ bool used=false;
+ long offsetEntry,readEntry;
+
while (true)
- {
- if ( !delim_mode && (Fp->tellg()-offset) >= l_max)
+ {
+ if ( !delim_mode && ((long)(Fp->tellg())-offset) >= l_max)
{
break;
}
+
+ used=true;
newDocEntry = ReadNextDocEntry( );
if ( !newDocEntry )
{
break;
}
- VRKey vr = newDocEntry->GetVR();
- if ( vr != "SQ" )
+ vr = newDocEntry->GetVR();
+ newValEntry = dynamic_cast<ValEntry*>(newDocEntry);
+ newBinEntry = dynamic_cast<BinEntry*>(newDocEntry);
+ newSeqEntry = dynamic_cast<SeqEntry*>(newDocEntry);
+
+ if ( newValEntry || newBinEntry )
{
+ offsetEntry=newDocEntry->GetOffset();
+ readEntry=newDocEntry->GetReadLength();
- if ( Global::GetVR()->IsVROfGdcmStringRepresentable(vr) )
+ if ( newBinEntry )
+ {
+ if ( ! Global::GetVR()->IsVROfBinaryRepresentable(vr) )
+ {
+ ////// Neither ValEntry NOR BinEntry: should mean UNKOWN VR
+ dbg.Verbose(0, "Document::ParseDES: neither Valentry, "
+ "nor BinEntry. Probably unknown VR.");
+ }
+
+ //////////////////// BinEntry or UNKOWN VR:
+ // When "this" is a Document the Key is simply of the
+ // form ( group, elem )...
+ if (Document *dummy = dynamic_cast< Document* > ( set ) )
+ {
+ (void)dummy;
+ newBinEntry->SetKey( newBinEntry->GetKey() );
+ }
+ // but when "this" is a SQItem, we are inserting this new
+ // valEntry in a sequence item, and the kay has the
+ // generalized form (refer to \ref BaseTagKey):
+ if (SQItem *parentSQItem = dynamic_cast< SQItem* > ( set ) )
+ {
+ newBinEntry->SetKey( parentSQItem->GetBaseTagKey()
+ + newBinEntry->GetKey() );
+ }
+
+ LoadDocEntry( newBinEntry );
+ if( !set->AddEntry( newBinEntry ) )
+ {
+ //Expect big troubles if here
+ //delete newBinEntry;
+ used=false;
+ }
+ }
+ else
{
/////////////////////// ValEntry
- ValEntry* newValEntry =
- new ValEntry( newDocEntry->GetDictEntry() );
- newValEntry->Copy( newDocEntry );
-
// When "set" is a Document, then we are at the top of the
// hierarchy and the Key is simply of the form ( group, elem )...
- if (Document* dummy = dynamic_cast< Document* > ( set ) )
+ if (Document *dummy = dynamic_cast< Document* > ( set ) )
{
(void)dummy;
newValEntry->SetKey( newValEntry->GetKey() );
// ...but when "set" is a SQItem, we are inserting this new
// valEntry in a sequence item. Hence the key has the
// generalized form (refer to \ref BaseTagKey):
- if (SQItem* parentSQItem = dynamic_cast< SQItem* > ( set ) )
+ if (SQItem *parentSQItem = dynamic_cast< SQItem* > ( set ) )
{
newValEntry->SetKey( parentSQItem->GetBaseTagKey()
+ newValEntry->GetKey() );
}
- set->AddEntry( newValEntry );
LoadDocEntry( newValEntry );
- if (newValEntry->IsItemDelimitor())
- {
- break;
- }
- if ( !delim_mode && (Fp->tellg()-offset) >= l_max)
+ bool delimitor=newValEntry->IsItemDelimitor();
+ if( !set->AddEntry( newValEntry ) )
{
- break;
- }
- }
- else
- {
- if ( ! Global::GetVR()->IsVROfGdcmBinaryRepresentable(vr) )
- {
- ////// Neither ValEntry NOR BinEntry: should mean UNKOWN VR
- dbg.Verbose(0, "Document::ParseDES: neither Valentry, "
- "nor BinEntry. Probably unknown VR.");
+ // If here expect big troubles
+ //delete newValEntry; //otherwise mem leak
+ used=false;
}
- //////////////////// BinEntry or UNKOWN VR:
- BinEntry* newBinEntry =
- new BinEntry( newDocEntry->GetDictEntry() ); //LEAK
- newBinEntry->Copy( newDocEntry );
-
- // When "this" is a Document the Key is simply of the
- // form ( group, elem )...
- if (Document* dummy = dynamic_cast< Document* > ( set ) )
+ if (delimitor)
{
- (void)dummy;
- newBinEntry->SetKey( newBinEntry->GetKey() );
+ if(!used)
+ delete newDocEntry;
+ break;
}
- // but when "this" is a SQItem, we are inserting this new
- // valEntry in a sequence item, and the kay has the
- // generalized form (refer to \ref BaseTagKey):
- if (SQItem* parentSQItem = dynamic_cast< SQItem* > ( set ) )
+ if ( !delim_mode && ((long)(Fp->tellg())-offset) >= l_max)
{
- newBinEntry->SetKey( parentSQItem->GetBaseTagKey()
- + newBinEntry->GetKey() );
+ if(!used)
+ delete newDocEntry;
+ break;
}
-
- set->AddEntry( newBinEntry );
- LoadDocEntry( newBinEntry );
}
if ( ( newDocEntry->GetGroup() == 0x7fe0 )
TransferSyntaxType ts = GetTransferSyntax();
if ( ts == RLELossless )
{
- long PositionOnEntry = Fp->tellg();
- Fp->seekg( newDocEntry->GetOffset(), std::ios_base::beg );
+ long positionOnEntry = Fp->tellg();
+ Fp->seekg( newDocEntry->GetOffset(), std::ios::beg );
ComputeRLEInfo();
- Fp->seekg( PositionOnEntry, std::ios_base::beg );
+ Fp->seekg( positionOnEntry, std::ios::beg );
}
else if ( IsJPEG() )
{
- long PositionOnEntry = Fp->tellg();
- Fp->seekg( newDocEntry->GetOffset(), std::ios_base::beg );
+ long positionOnEntry = Fp->tellg();
+ Fp->seekg( newDocEntry->GetOffset(), std::ios::beg );
ComputeJPEGFragmentInfo();
- Fp->seekg( PositionOnEntry, std::ios_base::beg );
+ Fp->seekg( positionOnEntry, std::ios::beg );
}
}
// Just to make sure we are at the beginning of next entry.
- SkipToNextDocEntry(newDocEntry);
+ SkipToNextDocEntry(offsetEntry,readEntry);
}
else
{
}
}
// no other way to create it ...
- SeqEntry* newSeqEntry =
- new SeqEntry( newDocEntry->GetDictEntry() );
- newSeqEntry->Copy( newDocEntry );
newSeqEntry->SetDelimitorMode( delim_mode );
// At the top of the hierarchy, stands a Document. When "set"
// is a Document, then we are building the first depth level.
// Hence the SeqEntry we are building simply has a depth
// level of one:
- if (Document* dummy = dynamic_cast< Document* > ( set ) )
+ if (Document *dummy = dynamic_cast< Document* > ( set ) )
{
(void)dummy;
newSeqEntry->SetDepthLevel( 1 );
// But when "set" is allready a SQItem, we are building a nested
// sequence, and hence the depth level of the new SeqEntry
// we are building, is one level deeper:
- if (SQItem* parentSQItem = dynamic_cast< SQItem* > ( set ) )
+ if (SQItem *parentSQItem = dynamic_cast< SQItem* > ( set ) )
{
newSeqEntry->SetDepthLevel( parentSQItem->GetDepthLevel() + 1 );
newSeqEntry->SetKey( parentSQItem->GetBaseTagKey()
l, delim_mode);
}
set->AddEntry( newSeqEntry );
- if ( !delim_mode && (Fp->tellg()-offset) >= l_max)
+ if ( !delim_mode && ((long)(Fp->tellg())-offset) >= l_max)
{
break;
}
}
- delete newDocEntry;
+
+ if(!used)
+ delete newDocEntry;
}
}
* \brief Parses a Sequence ( SeqEntry after SeqEntry)
* @return parsed length for this level
*/
-void Document::ParseSQ( SeqEntry* seqEntry,
+void Document::ParseSQ( SeqEntry *seqEntry,
long offset, long l_max, bool delim_mode)
{
int SQItemNumber = 0;
while (true)
{
- DocEntry* newDocEntry = ReadNextDocEntry();
+ DocEntry *newDocEntry = ReadNextDocEntry();
if ( !newDocEntry )
{
// FIXME Should warn user
{
if ( newDocEntry->IsSequenceDelimitor() )
{
- seqEntry->SetSequenceDelimitationItem( newDocEntry );
+ seqEntry->SetSequenceDelimitationItem( newDocEntry );
break;
}
}
- if ( !delim_mode && (Fp->tellg()-offset) >= l_max)
+ if ( !delim_mode && ((long)(Fp->tellg())-offset) >= l_max)
{
- break;
+ delete newDocEntry;
+ break;
}
SQItem *itemSQ = new SQItem( seqEntry->GetDepthLevel() );
}
ParseDES(itemSQ, newDocEntry->GetOffset(), l, dlm_mod);
+ delete newDocEntry;
seqEntry->AddEntry( itemSQ, SQItemNumber );
SQItemNumber++;
- if ( !delim_mode && ( Fp->tellg() - offset ) >= l_max )
+ if ( !delim_mode && ((long)(Fp->tellg())-offset ) >= l_max )
{
break;
}
* the value specified with Document::SetMaxSizeLoadEntry()
* @param entry Header Entry (Dicom Element) to be dealt with
*/
-void Document::LoadDocEntry(DocEntry* entry)
+void Document::LoadDocEntry(DocEntry *entry)
{
uint16_t group = entry->GetGroup();
std::string vr = entry->GetVR();
uint32_t length = entry->GetLength();
- Fp->seekg((long)entry->GetOffset(), std::ios_base::beg);
+ Fp->seekg((long)entry->GetOffset(), std::ios::beg);
// A SeQuence "contains" a set of Elements.
// (fffe e000) tells us an Element is beginning
std::ostringstream s;
if (length > MaxSizeLoadEntry)
{
- if (BinEntry* binEntryPtr = dynamic_cast< BinEntry* >(entry) )
+ if (BinEntry *binEntryPtr = dynamic_cast< BinEntry* >(entry) )
{
//s << "gdcm::NotLoaded (BinEntry)";
s << GDCM_NOTLOADED;
s << " x(" << std::hex << entry->GetLength() << ")";
binEntryPtr->SetValue(s.str());
}
- // Be carefull : a BinEntry IS_A ValEntry ...
- else if (ValEntry* valEntryPtr = dynamic_cast< ValEntry* >(entry) )
+ // Be carefull : a BinEntry IS_A ValEntry ...
+ else if (ValEntry *valEntryPtr = dynamic_cast< ValEntry* >(entry) )
{
// s << "gdcm::NotLoaded. (ValEntry)";
s << GDCM_NOTLOADED;
// to be sure we are at the end of the value ...
Fp->seekg((long)entry->GetOffset()+(long)entry->GetLength(),
- std::ios_base::beg);
+ std::ios::beg);
return;
}
// When we find a BinEntry not very much can be done :
- if (BinEntry* binEntryPtr = dynamic_cast< BinEntry* >(entry) )
+ if (BinEntry *binEntryPtr = dynamic_cast< BinEntry* >(entry) )
{
s << GDCM_BINLOADED;
binEntryPtr->SetValue(s.str());
}
delete[] str;
- if ( ValEntry* valEntry = dynamic_cast<ValEntry* >(entry) )
+ if ( ValEntry *valEntry = dynamic_cast<ValEntry* >(entry) )
{
if ( Fp->fail() || Fp->eof())//Fp->gcount() == 1
{
// The following reserved two bytes (see PS 3.5-2003, section
// "7.1.2 Data element structure with explicit vr", p 27) must be
// skipped before proceeding on reading the length on 4 bytes.
- Fp->seekg( 2L, std::ios_base::cur);
+ Fp->seekg( 2L, std::ios::cur);
uint32_t length32 = ReadInt32();
if ( (vr == "OB" || vr == "OW") && length32 == 0xffffffff )
// until the end of the file. Hence we artificially fix the
// the length and proceed.
long currentPosition = Fp->tellg();
- Fp->seekg(0L,std::ios_base::end);
- long lengthUntilEOF = Fp->tellg() - currentPosition;
- Fp->seekg(currentPosition, std::ios_base::beg);
+ Fp->seekg(0L,std::ios::end);
+ long lengthUntilEOF = (long)(Fp->tellg())-currentPosition;
+ Fp->seekg(currentPosition, std::ios::beg);
entry->SetLength(lengthUntilEOF);
return;
}
// and the dictionary entry depending on them.
uint16_t correctGroup = SwapShort( entry->GetGroup() );
uint16_t correctElem = SwapShort( entry->GetElement() );
- DictEntry* newTag = GetDictEntryByNumber( correctGroup,
+ DictEntry *newTag = GetDictEntryByNumber( correctGroup,
correctElem );
if ( !newTag )
{
/**
* \brief Find the Value Representation of the current Dicom Element.
- * @param entry
+ * @return Value Representation of the current Entry
*/
-void Document::FindDocEntryVR( DocEntry *entry )
+std::string Document::FindDocEntryVR()
{
if ( Filetype != ExplicitVR )
- {
- return;
- }
-
- char vr[3];
+ return(GDCM_UNKNOWN);
long positionOnEntry = Fp->tellg();
// Warning: we believe this is explicit VR (Value Representation) because
// 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.
-
+
+ char vr[3];
Fp->read (vr, (size_t)2);
vr[2] = 0;
- if( !CheckDocEntryVR(entry, vr) )
+ if( !CheckDocEntryVR(vr) )
{
- Fp->seekg(positionOnEntry, std::ios_base::beg);
- // 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 ( entry->IsVRUnknown() )
- {
- entry->SetVR("Implicit");
- }
- entry->SetImplicitVR();
+ Fp->seekg(positionOnEntry, std::ios::beg);
+ return(GDCM_UNKNOWN);
}
+ return(vr);
}
/**
* \brief Check the correspondance between the VR of the header entry
* and the taken VR. If they are different, the header entry is
* updated with the new VR.
- * @param entry Header Entry to check
* @param vr Dicom Value Representation
* @return false if the VR is incorrect of if the VR isn't referenced
* otherwise, it returns true
*/
-bool Document::CheckDocEntryVR(DocEntry *entry, VRKey vr)
+bool Document::CheckDocEntryVR(VRKey vr)
{
- std::string msg;
- bool realExplicit = true;
-
- // 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 && !Global::GetVR()->Count(vr) )
- {
- realExplicit = false;
- }
-
- if ( !realExplicit )
- {
- // We thought this was explicit VR, but we end up with an
- // implicit VR tag. Let's backtrack.
- msg = Util::Format("Falsely explicit vr file (%04x,%04x)\n",
- entry->GetGroup(), entry->GetElement());
- dbg.Verbose(1, "Document::FindVR: ", msg.c_str());
-
- if( entry->GetGroup() % 2 && entry->GetElement() == 0x0000)
- {
- // Group length is UL !
- DictEntry* newEntry = NewVirtualDictEntry(
- entry->GetGroup(), entry->GetElement(),
- "UL", "FIXME", "Group Length");
- entry->SetDictEntry( newEntry );
- }
+ if ( !Global::GetVR()->IsValidVR(vr) )
return false;
- }
-
- if ( entry->IsVRUnknown() )
- {
- // When not a dictionary entry, we can safely overwrite the VR.
- if( entry->GetElement() == 0x0000 )
- {
- // Group length is UL !
- entry->SetVR("UL");
- }
- else
- {
- entry->SetVR(vr);
- }
- }
- else if ( entry->GetVR() != vr )
- {
- // 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.
- DictEntry* newEntry = NewVirtualDictEntry(
- entry->GetGroup(), entry->GetElement(),
- vr, "FIXME", entry->GetName());
- entry->SetDictEntry(newEntry);
- }
return true;
}
* @param entry Entry to reverse transform
* @return Reverse transformed entry value
*/
-std::string Document::GetDocEntryUnvalue(DocEntry* entry)
+std::string Document::GetDocEntryUnvalue(DocEntry *entry)
{
if ( IsDocEntryAnInteger(entry) && entry->IsImplicitVR() )
{
/**
* \brief Skips to the begining of the next Header Entry
* \warning NOT end user intended method !
- * @param entry entry to skip
+ * @param offset start of skipping
+ * @param readLgth length to skip
+
*/
-void Document::SkipToNextDocEntry(DocEntry *entry)
+void Document::SkipToNextDocEntry(long offset,long readLgth)
{
- Fp->seekg((long)(entry->GetOffset()), std::ios_base::beg);
- Fp->seekg( (long)(entry->GetReadLength()), std::ios_base::cur);
+ Fp->seekg((long)(offset), std::ios::beg);
+ Fp->seekg( (long)(readLgth), std::ios::cur);
}
/**
{
uint16_t element = entry->GetElement();
uint16_t group = entry->GetGroup();
- const std::string & vr = entry->GetVR();
+ const std::string &vr = entry->GetVR();
uint32_t length = entry->GetLength();
// When we have some semantics on the element we just read, and if we
if ( vr == "UL" || vr == "US" || vr == "SL" || vr == "SS" )
{
return true;
- }
-
+ }
return false;
}
{
dbg.Verbose(1, "Document::FindDocEntryLengthOB: neither an Item "
"tag nor a Sequence delimiter tag.");
- Fp->seekg(positionOnEntry, std::ios_base::beg);
+ Fp->seekg(positionOnEntry, std::ios::beg);
throw FormatUnexpected("Document::FindDocEntryLengthOB()",
"Neither an Item tag nor a Sequence "
"delimiter tag.");
break;
}
}
- Fp->seekg( positionOnEntry, std::ios_base::beg);
+ Fp->seekg( positionOnEntry, std::ios::beg);
return totalLength;
}
void Document::SkipBytes(uint32_t nBytes)
{
//FIXME don't dump the returned value
- Fp->seekg((long)nBytes, std::ios_base::cur);
+ Fp->seekg((long)nBytes, std::ios::cur);
}
/**
RefShaDict = NULL;
RLEInfo = new RLEFramesInfo;
JPEGInfo = new JPEGFragmentsInfo;
+ Filetype = Unknown;
}
/**
uint32_t s32;
uint16_t s16;
- char deb[256]; //HEADER_LENGTH_TO_READ];
+ char deb[256];
// First, compare HostByteOrder and NetworkByteOrder in order to
// determine if we shall need to swap bytes (i.e. the Endian type).
// 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".
- Fp->read(deb, HEADER_LENGTH_TO_READ);
+ Fp->read(deb, 256);
char *entCur = deb + 128;
if( memcmp(entCur, "DICM", (size_t)4) == 0 )
// Position the file position indicator at first tag (i.e.
// after the file preamble and the "DICM" string).
- Fp->seekg(0, std::ios_base::beg);
- Fp->seekg ( 132L, std::ios_base::beg);
+ Fp->seekg(0, std::ios::beg);
+ Fp->seekg ( 132L, std::ios::beg);
return true;
} // End of DicomV3
// preamble. We can reset the file position indicator to where the data
// is (i.e. the beginning of the file).
dbg.Verbose(1, "Document::CheckSwap:", "not a DICOM Version3 file");
- Fp->seekg(0, std::ios_base::beg);
+ Fp->seekg(0, std::ios::beg);
// 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.
// representation of a 32 bits integer. Hence the following dirty
// trick :
s32 = *((uint32_t *)(entCur));
-
+
switch( s32 )
{
case 0x00040000 :
// So, let's check if this file wouldn't happen to be 'dirty' ACR/NEMA,
// i.e. the 'group length' element is not present :
- // check the supposed to be 'group number'
- // 0x0002 or 0x0004 or 0x0008
+ // check the supposed-to-be 'group number'
+ // in ( 0x0001 .. 0x0008 )
// to determine ' SwapCode' value .
// Only 0 or 4321 will be possible
// (no oportunity to check for the formerly well known
// ACR-NEMA 'Bad Big Endian' or 'Bad Little Endian'
- // if unsuccessfull (i.e. neither 0x0002 nor 0x0200 etc -4, 8-)
+ // if unsuccessfull (i.e. neither 0x0002 nor 0x0200 etc -3, 4, ..., 8-)
// the file IS NOT ACR-NEMA nor DICOM V3
// Find a trick to tell it the caller...
switch ( s16 )
{
+ case 0x0001 :
case 0x0002 :
+ case 0x0003 :
case 0x0004 :
- case 0x0008 :
+ case 0x0005 :
+ case 0x0006 :
+ case 0x0007 :
+ case 0x0008 :
SwapCode = 0;
Filetype = ACR;
return true;
+ case 0x0100 :
case 0x0200 :
+ case 0x0300 :
case 0x0400 :
- case 0x0800 :
+ case 0x0500 :
+ case 0x0600 :
+ case 0x0700 :
+ case 0x0800 :
SwapCode = 4321;
Filetype = ACR;
return true;
default :
dbg.Verbose(0, "Document::CheckSwap:",
- "ACR/NEMA unfound swap info (Really hopeless !)");
- Filetype = Unknown;
+ "ACR/NEMA unfound swap info (Really hopeless !)");
+ Filetype = Unknown;
return false;
}
// Then the only info we have is the net2host one.
}
}
+
+
/**
* \brief Restore the unproperly loaded values i.e. the group, the element
* and the dictionary entry depending on them.
+/**
+ * \brief Handle broken private tag from Philips NTSCAN
+ * where the endianess is being switch to BigEndian for no
+ * apparent reason
+ * @return no return
+ */
+void Document::HandleBrokenEndian(uint16_t group, uint16_t elem)
+{
+ // Endian reversion. Some files contain groups of tags with reversed endianess.
+ static int reversedEndian = 0;
+ // try to fix endian switching in the middle of headers
+ if ((group == 0xfeff) && (elem == 0x00e0))
+ {
+ // start endian swap mark for group found
+ reversedEndian++;
+ SwitchSwapToBigEndian();
+ // fix the tag
+ group = 0xfffe;
+ elem = 0xe000;
+ }
+ else if ((group == 0xfffe) && (elem == 0xe00d) && reversedEndian)
+ {
+ // end of reversed endian group
+ reversedEndian--;
+ SwitchSwapToBigEndian();
+ }
+}
+
/**
* \brief Read the next tag but WITHOUT loading it's value
* (read the 'Group Number', the 'Element Number',
* gets the VR, gets the length, gets the offset value)
* @return On succes the newly created DocEntry, NULL on failure.
*/
-DocEntry* Document::ReadNextDocEntry()
+DocEntry *Document::ReadNextDocEntry()
{
uint16_t group;
uint16_t elem;
return 0;
}
- DocEntry *newEntry = NewDocEntryByNumber(group, elem);
- FindDocEntryVR(newEntry);
+ HandleBrokenEndian(group, elem);
+ std::string vr = FindDocEntryVR();
+ std::string realVR = vr;
+
+ if( vr == GDCM_UNKNOWN)
+ {
+ DictEntry *dictEntry = GetDictEntryByNumber(group,elem);
+ if( dictEntry )
+ realVR = dictEntry->GetVR();
+ }
+
+ DocEntry *newEntry;
+ if( Global::GetVR()->IsVROfSequence(realVR) )
+ newEntry = NewSeqEntryByNumber(group, elem);
+ else if( Global::GetVR()->IsVROfStringRepresentable(realVR) )
+ newEntry = NewValEntryByNumber(group, elem,vr);
+ else
+ newEntry = NewBinEntryByNumber(group, elem,vr);
+
+ if( vr == GDCM_UNKNOWN )
+ {
+ if( Filetype == ExplicitVR )
+ {
+ // We thought this was explicit VR, but we end up with an
+ // implicit VR tag. Let's backtrack.
+ std::string msg;
+ msg = Util::Format("Falsely explicit vr file (%04x,%04x)\n",
+ newEntry->GetGroup(), newEntry->GetElement());
+ dbg.Verbose(1, "Document::FindVR: ", msg.c_str());
+ }
+ newEntry->SetImplicitVR();
+ }
try
{
s << " at address: " << (unsigned)currentPosition << std::endl;
dbg.Verbose(0, "Document::ReadItemTagLength: wrong Item Tag found:");
dbg.Verbose(0, s.str().c_str());
- Fp->seekg(positionOnEntry, std::ios_base::beg);
+ Fp->seekg(positionOnEntry, std::ios::beg);
return false;
}
// lengths, but we won't bother with such fuses for the time being.
if ( itemLength != 0 )
{
- char* basicOffsetTableItemValue = new char[itemLength + 1];
+ char *basicOffsetTableItemValue = new char[itemLength + 1];
Fp->read(basicOffsetTableItemValue, itemLength);
#ifdef GDCM_DEBUG
dbg.Verbose(0, "Document::ComputeRLEInfo: too many segments.");
}
- uint32_t rleSegmentOffsetTable[15];
+ uint32_t rleSegmentOffsetTable[16];
for( int k = 1; k <= 15; k++ )
{
rleSegmentOffsetTable[k] = ReadInt32();
SkipBytes(rleSegmentLength[nbRleSegments]);
// Store the collected info
- RLEFrame* newFrameInfo = new RLEFrame;
+ RLEFrame *newFrameInfo = new RLEFrame;
newFrameInfo->NumberFragments = nbRleSegments;
for( unsigned int uk = 1; uk <= nbRleSegments; uk++ )
{
long fragmentOffset = Fp->tellg();
// Store the collected info
- JPEGFragment* newFragment = new JPEGFragment;
+ JPEGFragment *newFragment = new JPEGFragment;
newFragment->Offset = fragmentOffset;
newFragment->Length = fragmentLength;
JPEGInfo->Fragments.push_back( newFragment );
* when recursively walking the given set.
* @param set The structure to be traversed (recursively).
*/
-void Document::BuildFlatHashTableRecurse( TagDocEntryHT& builtHT,
- DocEntrySet* set )
+void Document::BuildFlatHashTableRecurse( TagDocEntryHT &builtHT,
+ DocEntrySet *set )
{
- if (ElementSet* elementSet = dynamic_cast< ElementSet* > ( set ) )
+ if (ElementSet *elementSet = dynamic_cast< ElementSet* > ( set ) )
{
- TagDocEntryHT const & currentHT = elementSet->GetTagHT();
+ TagDocEntryHT const ¤tHT = elementSet->GetTagHT();
for( TagDocEntryHT::const_iterator i = currentHT.begin();
i != currentHT.end();
++i)
{
- DocEntry* entry = i->second;
- if ( SeqEntry* seqEntry = dynamic_cast<SeqEntry*>(entry) )
+ DocEntry *entry = i->second;
+ if ( SeqEntry *seqEntry = dynamic_cast<SeqEntry*>(entry) )
{
const ListSQItem& items = seqEntry->GetSQItems();
for( ListSQItem::const_iterator item = items.begin();
return;
}
- if (SQItem* SQItemSet = dynamic_cast< SQItem* > ( set ) )
+ if (SQItem *SQItemSet = dynamic_cast< SQItem* > ( set ) )
{
const ListDocEntry& currentList = SQItemSet->GetDocEntries();
for (ListDocEntry::const_iterator i = currentList.begin();
i != currentList.end();
++i)
{
- DocEntry* entry = *i;
- if ( SeqEntry* seqEntry = dynamic_cast<SeqEntry*>(entry) )
+ DocEntry *entry = *i;
+ if ( SeqEntry *seqEntry = dynamic_cast<SeqEntry*>(entry) )
{
const ListSQItem& items = seqEntry->GetSQItems();
for( ListSQItem::const_iterator item = items.begin();
* Document.
*
* The structure used by a Document (through \ref ElementSet),
- * in order to old the parsed entries of a Dicom header, is a recursive
+ * in order to hold the parsed entries of a Dicom header, is a recursive
* one. This is due to the fact that the sequences (when present)
* can be nested. Additionaly, the sequence items (represented in
* gdcm as \ref SQItem) add an extra complexity to the data
* \ref BuildFlatHashTable again...
* @return The flat std::map<> we juste build.
*/
-TagDocEntryHT* Document::BuildFlatHashTable()
+TagDocEntryHT *Document::BuildFlatHashTable()
{
- TagDocEntryHT* FlatHT = new TagDocEntryHT;
+ TagDocEntryHT *FlatHT = new TagDocEntryHT;
BuildFlatHashTableRecurse( *FlatHT, this );
return FlatHT;
}
return false;
}
+
+/**
+ * \brief Re-computes the length of a ACR-NEMA/Dicom group from a DcmHeader
+ * @param filetype Type of the File to be written
+ */
+int Document::ComputeGroup0002Length( FileType filetype )
+{
+ uint16_t gr, el;
+ std::string vr;
+
+ int groupLength = 0;
+ bool found0002 = false;
+
+ // for each zero-level Tag in the DCM Header
+ DocEntry *entry;
+
+ Initialize();
+ entry = GetNextEntry();
+ while(entry)
+ {
+ gr = entry->GetGroup();
+
+ if (gr == 0x0002)
+ {
+ found0002 = true;
+
+ el = entry->GetElement();
+ vr = entry->GetVR();
+
+ if (filetype == ExplicitVR)
+ {
+ if ( (vr == "OB") || (vr == "OW") || (vr == "SQ") )
+ {
+ groupLength += 4; // explicit VR AND OB, OW, SQ : 4 more bytes
+ }
+ }
+ groupLength += 2 + 2 + 4 + entry->GetLength();
+ }
+ else if (found0002 )
+ break;
+
+ entry = GetNextEntry();
+ }
+ return groupLength;
+}
+
} // end namespace gdcm
//-----------------------------------------------------------------------------
git://git.creatis.insa-lyon.fr / gdcm.git / blobdiff