/// <summary>
/// Create the list of presentation contexts for the DICOM SCP.
/// </summary>
/// <remarks>
/// The method loads the DICOM Scp plugins, and then queries them
/// to construct a list of presentation contexts that are supported.
/// </remarks>
private void CreatePresentationContexts()
{
DicomScpExtensionPoint <TContext> ep = new DicomScpExtensionPoint <TContext>();
object[] scps = ep.CreateExtensions();
foreach (object obj in scps)
{
IDicomScp <TContext> scp = obj as IDicomScp <TContext>;
scp.SetContext(_context);
IList <SupportedSop> sops = scp.GetSupportedSopClasses();
foreach (SupportedSop sop in sops)
{
byte pcid = _assocParameters.FindAbstractSyntax(sop.SopClass);
if (pcid == 0)
{
pcid = _assocParameters.AddPresentationContext(sop.SopClass);
}
// Now add all the transfer syntaxes, if necessary
foreach (TransferSyntax syntax in sop.SyntaxList)
{
// Check if the syntax is registered already
if (0 == _assocParameters.FindAbstractSyntaxWithTransferSyntax(sop.SopClass, syntax))
{
_assocParameters.AddTransferSyntax(pcid, syntax);
}
}
}
}
// Sort the presentation contexts, and put them in the order that we prefer them.
// Favor Explicit over Implicit transfer syntaxes, lossless compression over lossy
// compression, and lossless compressed over uncompressed.
foreach (DicomPresContext serverContext in _assocParameters.GetPresentationContexts())
{
serverContext.SortTransfers(delegate(TransferSyntax s1, TransferSyntax s2)
{
if (s1.Equals(s2))
{
return(0);
}
if (s1.ExplicitVr && !s2.ExplicitVr)
{
return(-1);
}
if (!s1.ExplicitVr && s2.ExplicitVr)
{
return(1);
}
if (s1.Encapsulated && s2.Encapsulated)
{
if (s1.LosslessCompressed == s2.LosslessCompressed)
{
return(0);
}
if (s1.LosslessCompressed && s2.LossyCompressed)
{
return(-1);
}
return(1);
}
if (s1.Encapsulated)
{
if (s1.LossyCompressed)
{
return(1);
}
return(-1);
}
if (s2.Encapsulated)
{
if (s2.LossyCompressed)
{
return(-1);
}
return(1);
}
return(0);
}
);
}
}
