/// <summary>
/// Add or remove DaggerBasePins depending on the IPins in the filter
/// </summary>
public void SyncPins()
{
bool altered = false;
// get the pins and convert to DaggerBasePins if they dont exisit yet
_pins = GetPins();
foreach (IPin pin in _pins)
{
PinDirection pd;
pin.QueryDirection(out pd);
if (pd == PinDirection.Input)
{
if (GetDaggerPin(pin) == null)
{
DSInputPin inpin = new DSInputPin(pin);
InputPins.Add(inpin);
altered = true;
}
}
else
{
if (GetDaggerPin(pin) == null)
{
DSOutputPin outpin = new DSOutputPin(pin);
OutputPins.Add(outpin);
altered = true;
}
}
}
// remove any DaggerDSPins that may have vanished
for (int i = InputPins.Count - 1; i > -1; i--)
{
if (!_pins.Contains((InputPins[i] as DSInputPin)._pin))
{
// force the disconnect
InputPins[i].Disconnect(true);
Marshal.ReleaseComObject((InputPins[i] as DSInputPin)._pin);
(InputPins[i] as DSInputPin)._pin = null;
InputPins.Remove(InputPins[i]);
altered = true;
}
// check the major media format of the pin and set it's data type
Type majorType = typeof(PinDataTypes.Unknown);
bool whoops = false;
try
{
majorType = GetPinMajorMediaType((InputPins[i] as DSInputPin)._pin);
}
catch
{
// the pin was removed by directshow, ignore changing the data type
whoops = true;
}
finally
{
if (!whoops)
{
if (InputPins[i].DataType != majorType)
{
InputPins[i].DataType = majorType;
altered = true;
}
}
}
}
for (int i = OutputPins.Count - 1; i > -1; i--)
{
if (!_pins.Contains((OutputPins[i] as DSOutputPin)._pin))
{
// force the disconnect
OutputPins[i].Disconnect(true);
Marshal.ReleaseComObject((OutputPins[i] as DSOutputPin)._pin);
(OutputPins[i] as DSOutputPin)._pin = null;
OutputPins.Remove(OutputPins[i]);
altered = true;
}
// check the major media format of the pin and set it's data type
Type majorType = typeof(PinDataTypes.Unknown);
bool whoops = false;
try
{
majorType = GetPinMajorMediaType((OutputPins[i] as DSOutputPin)._pin);
}
catch
{
// the pin was removed by directshow, ignore changing the data type
whoops = true;
}
finally
{
if (!whoops)
{
if (OutputPins[i].DataType != majorType)
{
OutputPins[i].DataType = majorType;
altered = true;
}
}
}
}
// if we altered anything, update the filter's ui elements and redraw the graph
if (altered)
{
if (this.UINode != null)
{
UINode.CalculateLayout();
if ((UINode as DaggerUINode).Parent != null)
{
// update the graph ui if the uinode is still part of a uigraph
(UINode as DaggerUINode).Parent.Invalidate();
}
}
}
// tell the ui node to update any pin property pages
if (UINode != null && UINode is DSFilterNodeUI)
{
(UINode as DSFilterNodeUI).SyncPinPropertyPages(null);
}
}