internal DicomStreamReader(BufferedStreamReader input, DicomTransferSyntax transferSyntax)
{
Input = input;
TransferSyntax = transferSyntax;
DataReader = new BinaryDataReader(input, transferSyntax.ByteOrder);
VRCoding = transferSyntax.VRCoding;
}
internal DicomStreamWriter(BufferedStreamWriter output, DicomTransferSyntax transferSyntax)
{
Output = output;
TransferSyntax = transferSyntax;
DataWriter = new BinaryDataWriter(output, transferSyntax.ByteOrder);
VRCoding = transferSyntax.VRCoding;
}
internal static long GetDataElementLength(ValueRepresentation vr, DicomVRCoding vrCoding, long unpaddedValueLength)
{
if (unpaddedValueLength >= uint.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(unpaddedValueLength), $"{unpaddedValueLength} is out of 32-bit range");
}
var valueLength = ((unpaddedValueLength % 2) != 0) ? (uint)unpaddedValueLength + 1 : (uint)unpaddedValueLength;
long dataElementLength = 4;
if (vrCoding == DicomVRCoding.Explicit)
{
dataElementLength += 2;
if (vr is IHas16BitExplicitVRLength)
{
if (valueLength >= ushort.MaxValue)
{
throw new ArgumentOutOfRangeException(nameof(unpaddedValueLength), $"{unpaddedValueLength} is out of 16-bit range");
}
dataElementLength += 2;
}
else
{
dataElementLength += 6;
}
}
else
{
dataElementLength += 4;
}
dataElementLength += valueLength;
return(dataElementLength);
}
