static void OverridePrepareFrame(GLib.GType gtype, PrepareFrameNativeDelegate callback) { unsafe { IntPtr *raw_ptr = (IntPtr *)(((long)gtype.GetClassPtr()) + (long)class_abi.GetFieldOffset("prepare_frame")); *raw_ptr = Marshal.GetFunctionPointerForDelegate((Delegate)callback); } }
private bool InternalPrepareFrame(Gst.Video.VideoAggregator videoaggregator, Gst.Buffer buffer, Gst.Video.VideoFrame prepared_frame) { PrepareFrameNativeDelegate unmanaged = null; unsafe { IntPtr *raw_ptr = (IntPtr *)(((long)this.LookupGType().GetThresholdType().GetClassPtr()) + (long)class_abi.GetFieldOffset("prepare_frame")); unmanaged = (PrepareFrameNativeDelegate)Marshal.GetDelegateForFunctionPointer(*raw_ptr, typeof(PrepareFrameNativeDelegate)); } if (unmanaged == null) { return(false); } IntPtr native_prepared_frame = GLib.Marshaller.StructureToPtrAlloc(prepared_frame); bool __result = unmanaged(this.Handle, videoaggregator == null ? IntPtr.Zero : videoaggregator.Handle, buffer == null ? IntPtr.Zero : buffer.Handle, native_prepared_frame); Marshal.FreeHGlobal(native_prepared_frame); return(__result); }