diff --git a/libvo/osd.h b/libvo/osd.h
new file mode 100644
index 0000000000..38ca8c5871
--- /dev/null
+++ b/libvo/osd.h
@@ -0,0 +1,15 @@
+
+#ifndef __MPLAYER_OSD_H
+#define __MPLAYER_OSD_H
+
+// Generic alpha renderers for all YUV modes and RGB depths.
+// These are "reference implementations", should be optimized later (MMX, etc)
+
+extern void vo_draw_alpha_yv12(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+extern void vo_draw_alpha_yuy2(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+extern void vo_draw_alpha_rgb24(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+extern void vo_draw_alpha_rgb32(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+extern void vo_draw_alpha_rgb15(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+extern void vo_draw_alpha_rgb16(int w,int h, unsigned char* src, unsigned char *srca, int srcstride, unsigned char* dstbase,int dststride);
+
+#endif
\ No newline at end of file