[DllImport("OpenToonzPlugin")] public static extern void otpSetInput(otpPort port, otpImage src);
[DllImport("OpenToonzPlugin")] public static extern void otpResizeImage(otpImage img, int width, int height);
[DllImport("OpenToonzPlugin")] public static extern void otpGetImageData(otpImage img, ref otpImageData data);
[DllImport("OpenToonzPlugin")] public static extern void otpDestroyImage(otpImage img);