static void OverrideCleanFrame(GLib.GType gtype, CleanFrameNativeDelegate callback) { unsafe { IntPtr *raw_ptr = (IntPtr *)(((long)gtype.GetClassPtr()) + (long)class_abi.GetFieldOffset("clean_frame")); *raw_ptr = Marshal.GetFunctionPointerForDelegate((Delegate)callback); } }
private void InternalCleanFrame(Gst.Video.VideoAggregator videoaggregator, Gst.Video.VideoFrame prepared_frame) { CleanFrameNativeDelegate unmanaged = null; unsafe { IntPtr *raw_ptr = (IntPtr *)(((long)this.LookupGType().GetThresholdType().GetClassPtr()) + (long)class_abi.GetFieldOffset("clean_frame")); unmanaged = (CleanFrameNativeDelegate)Marshal.GetDelegateForFunctionPointer(*raw_ptr, typeof(CleanFrameNativeDelegate)); } if (unmanaged == null) { return; } IntPtr native_prepared_frame = GLib.Marshaller.StructureToPtrAlloc(prepared_frame); unmanaged(this.Handle, videoaggregator == null ? IntPtr.Zero : videoaggregator.Handle, native_prepared_frame); Marshal.FreeHGlobal(native_prepared_frame); }