[FFmpeg-cvslog] r9857 - trunk/libavcodec/mpeg12.c

[michael]

Author: michael
Date: Wed Aug  1 21:37:28 2007
New Revision: 9857

Log:
reorder if() so that the condition can be simplified
saves another 4 cpu cycles


Modified:
   trunk/libavcodec/mpeg12.c

Modified: trunk/libavcodec/mpeg12.c
==============================================================================
--- trunk/libavcodec/mpeg12.c	(original)
+++ trunk/libavcodec/mpeg12.c	Wed Aug  1 21:37:28 2007
@@ -502,14 +502,14 @@ static int mpeg_decode_mb(MpegEncContext
             }
 
             cbp = get_vlc2(&s->gb, mb_pat_vlc.table, MB_PAT_VLC_BITS, 1);
-            if (cbp < 0 || ((cbp == 0) && (s->chroma_format < 2)) ){
-                av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
-                return -1;
-            }
             if(mb_block_count > 6){
                  cbp<<= mb_block_count-6;
                  cbp |= get_bits(&s->gb, mb_block_count-6);
             }
+            if (cbp <= 0){
+                av_log(s->avctx, AV_LOG_ERROR, "invalid cbp at %d %d\n", s->mb_x, s->mb_y);
+                return -1;
+            }
 
 #ifdef HAVE_XVMC
             //on 1 we memcpy blocks in xvmcvideo