public DicomWriteStatus Write(TransferSyntax syntax, DicomDataset dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (DicomElement item in dataset)
{
if (item.Tag.Element == 0x0000)
{
continue;
}
if (item.IsEmpty)
{
continue;
}
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths) &&
item.Tag.Group != _group && item.Tag.Group <= 0x7fe0)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)item.Tag.VR.Name[0]);
_writer.Write((byte)item.Tag.VR.Name[1]);
}
if (item is DicomElementSq)
{
DicomElementSq sq = item as DicomElementSq;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)UndefinedLength);
}
foreach (DicomSequenceItem ids in item.Values as DicomSequenceItem[])
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint)UndefinedLength);
}
Write(this.TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
DicomFragmentSequence fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
_writer.Write((uint)UndefinedLength);
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
_writer.Write((uint)bb.Length);
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
DicomElement de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
_writer.Write((ushort)theData.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)theData.Length);
}
}
else
{
_writer.Write((uint)theData.Length);
}
if (theData.Length > 0)
{
theData.CopyTo(_writer);
}
}
}
return(DicomWriteStatus.Success);
}
public DicomWriteStatus Write(TransferSyntax syntax, DicomDataset dataset, DicomWriteOptions options)
{
TransferSyntax = syntax;
foreach (var item in dataset)
{
if (item.IsEmpty)
{
continue;
}
if (item.Tag.Element == 0x0000)
{
continue;
}
if (Flags.IsSet(options, DicomWriteOptions.CalculateGroupLengths) &&
item.Tag.Group != _group)
{
_group = item.Tag.Group;
_writer.Write((ushort)_group);
_writer.Write((ushort)0x0000);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)'U');
_writer.Write((byte)'L');
_writer.Write((ushort)4);
}
else
{
_writer.Write((uint)4);
}
_writer.Write((uint)dataset.CalculateGroupWriteLength(_group, _syntax, options));
}
_writer.Write((ushort)item.Tag.Group);
_writer.Write((ushort)item.Tag.Element);
if (_syntax.ExplicitVr)
{
_writer.Write((byte)item.Tag.VR.Name[0]);
_writer.Write((byte)item.Tag.VR.Name[1]);
}
if (item is DicomElementSq)
{
var sq = item as DicomElementSq;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
int hl = _syntax.ExplicitVr ? 12 : 8;
_writer.Write((uint)sq.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths) - (uint)hl);
}
else
{
_writer.Write((uint)_undefinedLength);
}
foreach (DicomSequenceItem ids in (DicomSequenceItem[])sq.Values)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((uint)ids.CalculateWriteLength(_syntax, options & ~DicomWriteOptions.CalculateGroupLengths));
}
else
{
_writer.Write((uint)_undefinedLength);
}
Write(this.TransferSyntax, ids, options & ~DicomWriteOptions.CalculateGroupLengths);
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequenceItem))
{
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Group);
_writer.Write((ushort)DicomTag.ItemDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
if (!Flags.IsSet(options, DicomWriteOptions.ExplicitLengthSequence))
{
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
}
else if (item is DicomFragmentSequence)
{
DicomFragmentSequence fs = item as DicomFragmentSequence;
if (_syntax.ExplicitVr)
{
_writer.Write((ushort)0x0000);
}
_writer.Write((uint)_undefinedLength);
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
if (Flags.IsSet(options, DicomWriteOptions.WriteFragmentOffsetTable) && fs.HasOffsetTable)
{
_writer.Write((uint)fs.OffsetTableBuffer.Length);
fs.OffsetTableBuffer.CopyTo(_writer);
}
else
{
_writer.Write((uint)0x00000000);
}
foreach (DicomFragment bb in fs.Fragments)
{
_writer.Write((ushort)DicomTag.Item.Group);
_writer.Write((ushort)DicomTag.Item.Element);
_writer.Write((uint)bb.Length);
bb.GetByteBuffer(_syntax).CopyTo(_writer);
}
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Group);
_writer.Write((ushort)DicomTag.SequenceDelimitationItem.Element);
_writer.Write((uint)0x00000000);
}
else
{
var de = item;
ByteBuffer theData = de.GetByteBuffer(_syntax, dataset.SpecificCharacterSet);
if (_syntax.ExplicitVr)
{
if (de.Tag.VR.Is16BitLengthField)
{
// #10890: Can't encode the value length if the length of the data exceeds max value for a 16-bit field
if (theData.Length > ushort.MaxValue - 1 /* must be even length so max allowed = 65534 */)
{
throw new DicomDataException(string.Format(
"Value for {0} exceeds maximum stream length allowed for a {1} VR attribute encoded using {2}",
de.Tag, de.Tag.VR, _syntax));
}
_writer.Write((ushort)theData.Length);
}
else
{
_writer.Write((ushort)0x0000);
_writer.Write((uint)theData.Length);
}
}
else
{
_writer.Write((uint)theData.Length);
}
if (theData.Length > 0)
{
theData.CopyTo(_writer);
}
}
}
return(DicomWriteStatus.Success);
}
