[FFmpeg-cvslog] r18923 - trunk/libavcodec/h264.c

[conrad]

Author: conrad
Date: Sun May 24 05:39:20 2009
New Revision: 18923

Log:
H264: Don't deblock if alpha or beta is 0.
This ensures that the MMX loop filter is always bitexact with the C version.

Modified:
   trunk/libavcodec/h264.c

Modified: trunk/libavcodec/h264.c
==============================================================================
--- trunk/libavcodec/h264.c	Sun May 24 01:32:29 2009	(r18922)
+++ trunk/libavcodec/h264.c	Sun May 24 05:39:20 2009	(r18923)
@@ -6003,6 +6003,7 @@ static void filter_mb_edgev( H264Context
     const int index_a = qp + h->slice_alpha_c0_offset;
     const int alpha = (alpha_table+52)[index_a];
     const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
+    if (alpha ==0 || beta == 0) return;
 
     if( bS[0] < 4 ) {
         int8_t tc[4];
@@ -6019,6 +6020,7 @@ static void filter_mb_edgecv( H264Contex
     const int index_a = qp + h->slice_alpha_c0_offset;
     const int alpha = (alpha_table+52)[index_a];
     const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
+    if (alpha ==0 || beta == 0) return;
 
     if( bS[0] < 4 ) {
         int8_t tc[4];
@@ -6187,6 +6189,7 @@ static void filter_mb_edgeh( H264Context
     const int index_a = qp + h->slice_alpha_c0_offset;
     const int alpha = (alpha_table+52)[index_a];
     const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
+    if (alpha ==0 || beta == 0) return;
 
     if( bS[0] < 4 ) {
         int8_t tc[4];
@@ -6204,6 +6207,7 @@ static void filter_mb_edgech( H264Contex
     const int index_a = qp + h->slice_alpha_c0_offset;
     const int alpha = (alpha_table+52)[index_a];
     const int beta  = (beta_table+52)[qp + h->slice_beta_offset];
+    if (alpha ==0 || beta == 0) return;
 
     if( bS[0] < 4 ) {
         int8_t tc[4];