[MPlayer-cvslog] r31704 - trunk/spudec.c

[reimar]

Author: reimar
Date: Sun Jul 11 15:05:45 2010
New Revision: 31704

Log:
Simplify alpha conversion code.

Modified:
   trunk/spudec.c

Modified: trunk/spudec.c
==============================================================================
--- trunk/spudec.c	Sun Jul 11 14:56:52 2010	(r31703)
+++ trunk/spudec.c	Sun Jul 11 15:05:45 2010	(r31704)
@@ -732,7 +732,7 @@ void spudec_calc_bbox(void *me, unsigned
 /* transform mplayer's alpha value into an opacity value that is linear */
 static inline int canon_alpha(int alpha)
 {
-  return alpha ? 256 - alpha : 0;
+  return (uint8_t)-alpha;
 }
 
 typedef struct {