--- /dev/null
+/* xscreensaver, Copyright (c) 1997 Jamie Zawinski <jwz@netscape.com>
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation. No representations are made about the suitability of this
+ * software for any purpose. It is provided "as is" without express or
+ * implied warranty.
+ */
+
+#ifndef __SGIVIDEO_H__
+# ifdef HAVE_SGI_VIDEO
+
+Bool grab_video_frame(Screen *screen, Visual *visual, Drawable dest);
+
+# endif /* HAVE_SGI_VIDEO */
+#endif /* __SGIVIDEO_H__ */