--- /dev/null
+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#ifndef OVERLAYFRAME_INC
+#define OVERLAYFRAME_INC
+
+// Modes
+
+#define TRANSFER_TYPES 23
+
+#define TRANSFER_NORMAL 0
+#define TRANSFER_ADDITION 1
+#define TRANSFER_SUBTRACT 2
+#define TRANSFER_MULTIPLY 3
+#define TRANSFER_DIVIDE 4
+#define TRANSFER_REPLACE 5
+#define TRANSFER_MAX 6
+#define TRANSFER_MIN 7
+#define TRANSFER_AVERAGE 8
+#define TRANSFER_DARKEN 9
+#define TRANSFER_LIGHTEN 10
+#define TRANSFER_DST 11
+#define TRANSFER_DST_ATOP 12
+#define TRANSFER_DST_IN 13
+#define TRANSFER_DST_OUT 14
+#define TRANSFER_DST_OVER 15
+#define TRANSFER_SRC 16
+#define TRANSFER_SRC_ATOP 17
+#define TRANSFER_SRC_IN 18
+#define TRANSFER_SRC_OUT 19
+#define TRANSFER_SRC_OVER 20
+#define TRANSFER_OR 21
+#define TRANSFER_XOR 22
+
+// Interpolation types
+
+
+#define NEAREST_NEIGHBOR 0 // Nearest for enlargement and reduction
+#define CUBIC_CUBIC 1 // Bicubic enlargement and reduction
+#define CUBIC_LINEAR 2 // Bicubic enlargement and linear reduction
+#define LINEAR_LINEAR 3 // Not explicitely called but used for user
+#define LANCZOS_LANCZOS 4 // Just because we can
+
+class OverlayFrame;
+
+#endif