From 5d3fd5d5ce2e0a5fa3905b87dfcca94cbe1d57af Mon Sep 17 00:00:00 2001
From: Andrew Mahone <andrew.mahone@gmail.com>
Date: Wed, 21 Jan 2009 05:10:16 +0000
Subject: [PATCH] replace DIV255 with an inline function, the macro version
 caused unneeded recalculations

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@19809 a1c6a512-1295-4272-9138-f99709370657
---
 apps/plugins/pictureflow.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/apps/plugins/pictureflow.c b/apps/plugins/pictureflow.c
index 1190de1e27..344f6ff5e0 100644
--- a/apps/plugins/pictureflow.c
+++ b/apps/plugins/pictureflow.c
@@ -397,8 +397,12 @@ static inline PFreal fcos(int iangle)
     return fsin(iangle + (IANGLE_MAX >> 2));
 }
 
-#define DIV255(val) ((((((val)>>8)+(val))>>8)+(val))>>8)
-#define SCALE_VAL(val,out) DIV255((val) * (out) + 127)
+static inline uint32_t div255(uint32_t val)
+{
+    return ((((val >> 8) + val) >> 8) + val) >> 8;
+}
+
+#define SCALE_VAL(val,out) div255((val) * (out) + 127)
 
 static void output_row_transposed(uint32_t row, void * row_in,
                                        struct scaler_context *ctx)