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/*=========================================================================
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.
=========================================================================*/
#ifndef GDCMITEM_TXX
#define GDCMITEM_TXX
#include "gdcmItem.h"
namespace gdcm
{
template <typename TDE>
VL Item::GetLength() const
{
if( ValueLengthField.IsUndefined() )
{
assert( !NestedDataSet.GetLength<TDE>().IsUndefined() );
// Item Start 4
// Item Length 4
// DataSet ?
// Item End Delimitation 4
// Item End Length 4
assert( NestedDataSet.GetLength<TDE>() % 2 == 0 );
return TagField.GetLength() /* 4 */ + ValueLengthField.GetLength() /* 4 */
+ NestedDataSet.GetLength<TDE>() + 4 + 4;
}
else
{
// Item Start 4
// Item Length 4
// DataSet ?
const VL nestedlen = NestedDataSet.GetLength<TDE>();
// The following line is commented out, since we could be in the case where
// we are computing the actual length of an implicit dataset, from an
// initially read explicit dataset in which case the two length cannot
// related to each other
//gdcmAssertAlwaysMacro( ValueLengthField == nestedlen );
assert( nestedlen % 2 == 0 );
return TagField.GetLength() /* 4 */ + ValueLengthField.GetLength() /* 4 */
//+ ValueLengthField;
+ nestedlen;
}
}
} // end namespace gdcm
#endif // GDCMITEM_TXX
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