[patch] vdr-1.6 merge transparent color

[matthieu castet <castet.matthieu@xxxxxxx>]

Hi,

this patch merge all color that are transparent (alpha = 0) in ClosestColor.
This allow to save precious color Index on ff cards.

Matthieu

--- vdr-1.6.0/osd.c	2007-10-12 14:38:36.000000000 +0200
+++ vdr-1.6.0p/osd.c	2009-11-21 21:33:09.000000000 +0100
@@ -141,6 +141,8 @@
   int B1 = (Color & 0x000000FF);
   for (int i = 0; i < numColors; i++) {
       int A2 = (color[i] & 0xFF000000) >> 24;
+      if (A2 == 0 && A1 == 0)
+          diff = 0;
       int R2 = (color[i] & 0x00FF0000) >> 16;
       int G2 = (color[i] & 0x0000FF00) >>  8;
       int B2 = (color[i] & 0x000000FF);
@@ -149,6 +151,8 @@
          d = diff;
          n = i;
          }
+      if (d == 0)
+          break;
       }
   return d <= MaxDiff ? n : -1;
 }

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