public static ArrayList GetPins(ArrayList pins, _PinDirection dir)
{
ArrayList ret = new ArrayList();
foreach(IPin pin in pins)
{
_PinDirection pinDir;
pin.QueryDirection(out pinDir);
if(pinDir == dir)
{
ret.Add(pin);
}
}
return ret;
}
public static IPin GetPin(IBaseFilter iBF, _PinDirection pinDir, Guid category, Guid type, bool unconnected, int num)
{
GCHandle hCatGuid = new GCHandle();
GCHandle hTypeGuid = new GCHandle();
IntPtr pCatGuid = IntPtr.Zero;
IntPtr pTypeGuid = IntPtr.Zero;
if(category != Guid.Empty)
{
hCatGuid = GCHandle.Alloc(category, GCHandleType.Pinned);
pCatGuid = hCatGuid.AddrOfPinnedObject();
}
else if(type != Guid.Empty)
{
hTypeGuid = GCHandle.Alloc(type, GCHandleType.Pinned);
pTypeGuid = hTypeGuid.AddrOfPinnedObject();
}
IPin pin = null;
try
{
ICaptureGraphBuilder2 cgb2 = CaptureGraphBuilder2Class.CreateInstance();
cgb2.FindPin(iBF, pinDir, pCatGuid, pTypeGuid, unconnected, num, out pin);
}
finally
{
if(pCatGuid != IntPtr.Zero)
{
hCatGuid.Free();
}
if(pTypeGuid != IntPtr.Zero)
{
hTypeGuid.Free();
}
}
return pin;
}
