faster CompareBlocks

git-svn-id: https://recordmydesktop.svn.sourceforge.net/svnroot/recordmydesktop/trunk@223 f606c939-3180-4ac9-a4b8-4b8779d57d0a

1 files changed, 4 insertions, 6 deletions

diff --git a/recordmydesktop/src/cache_frame.c b/recordmydesktop/src/cache_frame.c
index 7f8c826..725a1df 100644
--- a/recordmydesktop/src/cache_frame.c
+++ b/recordmydesktop/src/cache_frame.c
@@ -35,12 +35,10 @@ int CompareBlocks(unsigned char *incoming,unsigned char *old,int blockno,int wid
                            *old_reg=&(old[block_i*(width*height/divisor)+block_k*width/divisor]);
 
     for(j=0;j<height/divisor;j++){
-        for(i=0;i<width/divisor;i++){
-            if((*(incoming_reg++))!=(*(old_reg++)))
-                return 1;
-        }
-        incoming_reg+=(width-width/divisor);
-        old_reg+=(width-width/divisor);
+        if(memcmp(incoming_reg,old_reg,width/divisor))
+            return 1;
+        incoming_reg+=width;
+        old_reg+=width;
     }
 
     return 0;