| public static ReadElementExplicitLittleEndian ( EvilDICOM.Core.IO.Reading.DICOMBinaryReader dr ) : IDICOMElement | ||
| dr | EvilDICOM.Core.IO.Reading.DICOMBinaryReader | the binary reader which is reading the DICOM object |
| return | IDICOMElement | |
/// <summary>
/// Read explicit VR little endian up to transfer syntax element and determines transfer syntax for rest of elements
/// </summary>
/// <param name="dr">the binary reader which is reading the DICOM object</param>
/// <param name="syntax">the transfer syntax of the DICOM file</param>
/// <returns>elements preceeding and including transfer syntax element</returns>
public static List <IDICOMElement> ReadFileMetadata(DICOMBinaryReader dr, ref TransferSyntax syntax)
{
var elements = new List <IDICOMElement>();
syntax = syntax != TransferSyntax.IMPLICIT_VR_LITTLE_ENDIAN
? syntax
: TransferSyntax.IMPLICIT_VR_LITTLE_ENDIAN;
while (dr.StreamPosition < dr.StreamLength)
{
long position = dr.StreamPosition;
if (TagReader.ReadLittleEndian(dr).Group == _metaGroup)
{
dr.StreamPosition = position;
IDICOMElement el = DICOMElementReader.ReadElementExplicitLittleEndian(dr);
Tag uid = TagHelper.TRANSFER_SYNTAX_UID;
if (el.Tag == uid)
{
syntax = TransferSyntaxHelper.GetSyntax(el);
}
elements.Add(el);
}
else
{
dr.StreamPosition = position;
break;
}
}
return(elements);
}
/// <summary>
/// Read explicit VR little endian up to transfer syntax element and determines transfer syntax for rest of elements
/// </summary>
/// <param name="dr">the binary reader which is reading the DICOM object</param>
/// <param name="syntax">the transfer syntax of the DICOM file</param>
/// <returns>elements preceeding and including transfer syntax element</returns>
private static List <IDICOMElement> ReadFileMetadata(DICOMBinaryReader dr, out TransferSyntax syntax)
{
List <IDICOMElement> elements = new List <IDICOMElement>();
syntax = TransferSyntax.IMPLICIT_VR_LITTLE_ENDIAN;
while (dr.StreamPosition < dr.StreamLength)
{
long position = dr.StreamPosition;
if (TagReader.ReadLittleEndian(dr).Group == _MetaGroup)
{
dr.StreamPosition = position;
IDICOMElement el = DICOMElementReader.ReadElementExplicitLittleEndian(dr);
if (el.Tag.CompleteID == TagHelper.TRANSFER_SYNTAX_UID.CompleteID)
{
syntax = TransferSyntaxHelper.GetSyntax(el);
}
elements.Add(el);
}
else
{
dr.StreamPosition = position;
break;
}
}
return(elements);
}
/// <summary>
/// Read explicit VR little endian up to transfer syntax element and determines transfer syntax for rest of elements
/// </summary>
/// <param name="dr">the binary reader which is reading the DICOM object</param>
/// <param name="syntax">the transfer syntax of the DICOM file</param>
/// <returns>elements preceeding and including transfer syntax element</returns>
public static List <IDICOMElement> ReadFileMetadata(DICOMBinaryReader dr, ref TransferSyntax syntax, ref StringEncoding enc)
{
var elements = new List <IDICOMElement>();
while (dr.StreamPosition < dr.StreamLength)
{
var position = dr.StreamPosition;
if (TagReader.ReadLittleEndian(dr).Group == _metaGroup)
{
dr.StreamPosition = position;
var el = DICOMElementReader.ReadElementExplicitLittleEndian(dr, enc);
if (el.Tag == TagHelper.TransferSyntaxUID)
{
syntax = TransferSyntaxHelper.GetSyntax(el);
}
elements.Add(el);
}
else
{
dr.StreamPosition = position;
break;
}
}
return(elements);
}
private static DICOMObject ReadIndefiniteLittleEndian(DICOMBinaryReader dr, TransferSyntax syntax, StringEncoding enc)
{
var elements = new List <IDICOMElement>();
while (!IsEndOfSequenceItemLittleEndian(dr) && dr.StreamLength != dr.StreamPosition)
{
dr.StreamPosition -= 8;
if (syntax == TransferSyntax.EXPLICIT_VR_LITTLE_ENDIAN)
{
elements.Add(DICOMElementReader.ReadElementExplicitLittleEndian(dr, enc));
}
else
{
elements.Add(DICOMElementReader.ReadElementImplicitLittleEndian(dr, enc));
}
}
return(new DICOMObject(elements));
}
