public static void SetFormat(this IAMStreamConfig cfg, AmMediaType media)
{
int size = Marshal.SizeOf(media);
IntPtr ptr = Marshal.AllocCoTaskMem(Marshal.SizeOf(media.GetType()));
Marshal.StructureToPtr(media, ptr, false);
uint hresult = (uint)cfg.SetFormat(ptr);
if (0x8007000E == hresult)
throw new OutOfMemoryException();
else if (0x80040209 == hresult)
throw new Exception("The input pin is not connected.");
Marshal.FreeCoTaskMem(ptr);
}
public static AmMediaType GetFormat(this IAMStreamConfig cfg)
{
AmMediaType mtype = new AmMediaType();
IntPtr ptr = Marshal.AllocCoTaskMem(Marshal.SizeOf(mtype));
uint hresult = (uint)cfg.GetFormat(ptr);
if (0x8007000E == hresult)
throw new OutOfMemoryException();
else if (0x80040209 == hresult)
throw new Exception("The input pin is not connected.");
Marshal.PtrToStructure(ptr, mtype);
Marshal.FreeCoTaskMem(ptr);
return mtype;
}