From 08baa3e0d78d337e19121dcecd628d251ea55e7e Mon Sep 17 00:00:00 2001
From: Kostya Shishkov <kostya.shishkov@gmail.com>
Date: Sat, 2 Dec 2006 12:55:29 +0000
Subject: [PATCH] 10e6l FastUVMC was done right but in the wrong place

Originally committed as revision 7207 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/vc1.c | 27 ++++++++++++---------------
 1 file changed, 12 insertions(+), 15 deletions(-)

diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c
index cd3c0c2d6a..7b385ca47f 100644
--- a/libavcodec/vc1.c
+++ b/libavcodec/vc1.c
@@ -790,6 +790,10 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
     }
     uvmx = (mx + ((mx & 3) == 3)) >> 1;
     uvmy = (my + ((my & 3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+    }
     if(!dir) {
         srcY = s->last_picture.data[0];
         srcU = s->last_picture.data[1];
@@ -878,11 +882,6 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
         srcY += s->mspel * (1 + s->linesize);
     }
 
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
-    }
-
     if(s->mspel) {
         dxy = ((my & 3) << 2) | (mx & 3);
         dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0]    , srcY    , s->linesize, v->rnd);
@@ -1052,6 +1051,10 @@ static void vc1_mc_4mv_chroma(VC1Context *v)
     s->current_picture.motion_val[1][s->block_index[0]][1] = ty;
     uvmx = (tx + ((tx&3) == 3)) >> 1;
     uvmy = (ty + ((ty&3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1));
+    }
 
     uvsrc_x = s->mb_x * 8 + (uvmx >> 2);
     uvsrc_y = s->mb_y * 8 + (uvmy >> 2);
@@ -1102,11 +1105,6 @@ static void vc1_mc_4mv_chroma(VC1Context *v)
         }
     }
 
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
-    }
-
     /* Chroma MC always uses qpel bilinear */
     uvdxy = ((uvmy & 3) << 2) | (uvmx & 3);
     uvmx = (uvmx&3)<<1;
@@ -2061,6 +2059,10 @@ static void vc1_interp_mc(VC1Context *v)
     my = s->mv[1][0][1];
     uvmx = (mx + ((mx & 3) == 3)) >> 1;
     uvmy = (my + ((my & 3) == 3)) >> 1;
+    if(v->fastuvmc) {
+        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
+        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
+    }
     srcY = s->next_picture.data[0];
     srcU = s->next_picture.data[1];
     srcV = s->next_picture.data[2];
@@ -2123,11 +2125,6 @@ static void vc1_interp_mc(VC1Context *v)
         srcY += s->mspel * (1 + s->linesize);
     }
 
-    if(v->fastuvmc) {
-        uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1));
-        uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1));
-    }
-
     mx >>= 1;
     my >>= 1;
     dxy = ((my & 1) << 1) | (mx & 1);