GenSeqs.cxx
/*=========================================================================
Program: GDCM (Grassroots DICOM). A DICOM library
Copyright (c) 2006-2011 Mathieu Malaterre
All rights reserved.
See Copyright.txt or http://gdcm.sourceforge.net/Copyright.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 notice for more information.
=========================================================================*/
#include "gdcmReader.h"
#include "gdcmWriter.h"
#include "gdcmItem.h"
#include "gdcmImageReader.h"
#include "gdcmSequenceOfItems.h"
#include "gdcmFile.h"
#include "gdcmTag.h"
/*
* This example is used to generate the file:
*
* gdcmConformanceTests/SequenceWithUndefinedLengthNotConvertibleToDefinedLength.dcm
*
* There is a flaw in the DICOM design were it is assumed that Sequence can be
* either represented as undefined length or defined length. This should work
* in most case, but the undefined length is a little more general and can
* store sequence of items that a defined length cannot.
* Deflated syntax was used in this case since this synthetic example can be
* nicely compressed using this transfer syntax.
*
* Warning: do not try to compute the group length elements !
* Warning: You may need a 64bits machine for this example to work.
*/
int main(int argc, char *argv[])
{
if( argc < 3 )
{
std::cerr << argv[0] << " input.dcm output.dcm" << std::endl;
return 1;
}
const char *filename = argv[1];
const char *outfilename = argv[2];
gdcm::Reader reader;
reader.SetFileName( filename );
if( !reader.Read() )
{
return 1;
}
gdcm::File &file = reader.GetFile();
gdcm::DataSet &ds = file.GetDataSet();
//const unsigned int nitems = 1000;
const unsigned int ptr_len = 42; /*94967296 / nitems; */
//assert( ptr_len == 42949672 );
char *ptr = new char[ptr_len];
memset(ptr,0,ptr_len);
// Create a Sequence
gdcm::SmartPointer<gdcm::SequenceOfItems> sq = new gdcm::SequenceOfItems();
sq->SetLengthToUndefined();
const char owner_str[] = "GDCM CONFORMANCE TESTS";
gdcm::DataElement owner( gdcm::Tag(0x4d4d, 0x10) );
owner.SetByteValue(owner_str, (uint32_t)strlen(owner_str));
owner.SetVR( gdcm::VR::LO );
for(unsigned int idx = 0; idx < 10/* nitems*/; ++idx)
{
// Create a dataelement
gdcm::DataElement de( gdcm::Tag(0x4d4d, 0x1002) );
de.SetByteValue(ptr, ptr_len);
de.SetVR( gdcm::VR::OB );
// Create an item
gdcm::Item it;
it.SetVLToUndefined();
gdcm::DataSet &nds = it.GetNestedDataSet();
nds.Insert(owner);
nds.Insert(de);
sq->AddItem(it);
}
// Insert sequence into data set
gdcm::DataElement des( gdcm::Tag(0x4d4d,0x1001) );
des.SetVR(gdcm::VR::SQ);
des.SetValue(*sq);
des.SetVLToUndefined();
ds.Insert(owner);
ds.Insert(des);
gdcm::Writer w;
w.SetFile( file );
//w.SetCheckFileMetaInformation( true );
w.SetFileName( outfilename );
if (!w.Write() )
{
return 1;
}
return 0;
}
gdcm::DataElement
Class to represent a Data Element either Implicit or Explicit.
Definition gdcmDataElement.h:59
gdcm::DataElement::SetVLToUndefined
void SetVLToUndefined()
gdcm::DataElement::SetValue
void SetValue(Value const &vl)
Definition gdcmDataElement.h:100
gdcm::DataElement::SetByteValue
void SetByteValue(const char *array, VL length)
Definition gdcmDataElement.h:126
gdcm::DataElement::SetVR
void SetVR(VR const &vr)
Definition gdcmDataElement.h:88
gdcm::DataSet
Class to represent a Data Set (which contains Data Elements).
Definition gdcmDataSet.h:56
gdcm::DataSet::Insert
void Insert(const DataElement &de)
Definition gdcmDataSet.h:128
gdcm::File
a DICOM File
Definition gdcmFile.h:34
gdcm::File::GetDataSet
const DataSet & GetDataSet() const
Get Data Set.
Definition gdcmFile.h:57
gdcm::Item
Class to represent an Item.
Definition gdcmItem.h:46
gdcm::Item::GetNestedDataSet
const DataSet & GetNestedDataSet() const
Definition gdcmItem.h:80
gdcm::Reader
Reader ala DOM (Document Object Model).
Definition gdcmReader.h:54
gdcm::Reader::GetFile
const File & GetFile() const
Set/Get File.
Definition gdcmReader.h:72
gdcm::Reader::Read
virtual bool Read()
Main function to read a file.
gdcm::Reader::SetFileName
void SetFileName(const char *filename_native)
gdcm::SequenceOfItems
Class to represent a Sequence Of Items.
Definition gdcmSequenceOfItems.h:40
gdcm::SmartPointer
Class for Smart Pointer.
Definition gdcmSmartPointer.h:40
gdcm::Tag
Class to represent a DICOM Data Element (Attribute) Tag (Group, Element).
Definition gdcmTag.h:39
gdcm::VR::OB
@ OB
Definition gdcmVR.h:72
gdcm::VR::LO
@ LO
Definition gdcmVR.h:70
gdcm::VR::SQ
@ SQ
Definition gdcmVR.h:81
gdcm::Writer
Writer ala DOM (Document Object Model).
Definition gdcmWriter.h:49
gdcm::Writer::Write
virtual bool Write()
Main function to tell the writer to write.
gdcm::Writer::SetFile
void SetFile(const File &f)
Set/Get the DICOM file (DataSet + Header).
Definition gdcmWriter.h:66
gdcm::Writer::SetFileName
void SetFileName(const char *filename_native)
Set the filename of DICOM file to write:
gdcmFile.h
gdcmImageReader.h
gdcmItem.h
gdcmReader.h
gdcmSequenceOfItems.h
gdcmTag.h
gdcmWriter.h