public static string DecodeString(string[] specificCharacterSets, string vrs, byte[] bytes)
{
var dicomStringDecoder = StringDecoder.Get(specificCharacterSets);
var vr = DicomVR.Lookup(vrs);
return(dicomStringDecoder.Decode(vr, bytes));
}
private DicomReadStatus ParseVR(DicomReadOptions options)
{
if (_vr == null)
{
if (_syntax.IsExplicitVR)
{
if (_remain >= 2)
{
_vr = DicomVR.Lookup(_reader.ReadChars(2));
_remain -= 2;
_bytes += 2;
_read += 2;
}
else
{
return(NeedMoreData(2));
}
}
else
{
if (_tag.Element == 0x0000)
{
_vr = DicomVR.UL;
}
else if (Flags.IsSet(options, DicomReadOptions.ForcePrivateCreatorToLO) &&
_tag.IsPrivate && _tag.Element > 0x0000 && _tag.Element <= 0x00ff)
{
_vr = DicomVR.UN;
}
else
{
_vr = _tag.Entry.DefaultVR;
}
}
if (_vr == DicomVR.UN)
{
if (_tag.Element == 0x0000)
{
_vr = DicomVR.UL; // is this needed?
}
else if (_tag.IsPrivate)
{
if (_tag.Element <= 0x00ff)
{
// private creator id
}
else if (_stream.CanSeek && Flags.IsSet(options, DicomReadOptions.AllowSeekingForContext))
{
// attempt to identify private sequence
long pos = _stream.Position;
if (_syntax.IsExplicitVR)
{
if (_remain >= 2)
{
_reader.ReadUInt16();
}
else
{
_vr = null;
_stream.Position = pos;
return(NeedMoreData(2));
}
}
uint l = 0;
if (_remain >= 4)
{
l = _reader.ReadUInt32();
if (l == UndefinedLength)
{
_vr = DicomVR.SQ;
}
}
else
{
_vr = null;
_stream.Position = pos;
return(NeedMoreData(4));
}
//if (l != 0 && _vr == DicomVR.UN) {
// if (_remain >= 4) {
// ushort g = _reader.ReadUInt16();
// ushort e = _reader.ReadUInt16();
// DicomTag tag = new DicomTag(g, e);
// if (tag == DicomTags.Item || tag == DicomTags.SequenceDelimitationItem)
// _vr = DicomVR.SQ;
// } else {
// _vr = null;
// _stream.Position = pos;
// return NeedMoreData(4);
// }
//}
_stream.Position = pos;
}
}
}
}
return(DicomReadStatus.Success);
}
