Overlap filtering was done in reverse order

Originally committed as revision 7111 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/vc1.c

@@ -3340,10 +3340,10 @@ static int vc1_decode_p_mb(VC1Context *v)
                     for(j = 0; j < 64; j++) s->block[i][j] += 128;
                     s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2));
                     if(v->pq >= 9 && v->overlap) {
-                        if(v->a_avail)
-                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
                         if(v->c_avail)
                             s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? (i&1) : (s->mb_x&1));
+                        if(v->a_avail)
+                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
                     }
                 } else if(val) {
                     vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
@@ -3443,10 +3443,10 @@ static int vc1_decode_p_mb(VC1Context *v)
                     for(j = 0; j < 64; j++) s->block[i][j] += 128;
                     s->dsp.put_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize);
                     if(v->pq >= 9 && v->overlap) {
-                        if(v->a_avail)
-                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
                         if(v->c_avail)
                             s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? (i&1) : (s->mb_x&1));
+                        if(v->a_avail)
+                            s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2), (i<4) ? ((i&1)>>1) : (s->mb_y&1));
                     }
                 } else if(is_coded[i]) {
                     status = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block);
@@ -3712,16 +3712,6 @@ static void vc1_decode_i_blocks(VC1Context *v)
 
             vc1_put_block(v, s->block);
             if(v->pq >= 9 && v->overlap) {
-                if(!s->first_slice_line) {
-                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
-                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
-                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
-                    }
-                }
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
                 if(s->mb_x) {
                     s->dsp.vc1_h_overlap(s->dest[0], s->linesize, 0);
                     s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 0);
@@ -3732,6 +3722,16 @@ static void vc1_decode_i_blocks(VC1Context *v)
                 }
                 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize, 1);
                 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
+                if(!s->first_slice_line) {
+                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
+                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
+                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
+                    }
+                }
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
             }
 
             if(get_bits_count(&s->gb) > v->bits) {
@@ -3842,16 +3842,6 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
 
             vc1_put_block(v, s->block);
             if(overlap) {
-                if(!s->first_slice_line) {
-                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
-                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
-                    if(!(s->flags & CODEC_FLAG_GRAY)) {
-                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
-                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
-                    }
-                }
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
-                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
                 if(s->mb_x) {
                     s->dsp.vc1_h_overlap(s->dest[0], s->linesize, 0);
                     s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 0);
@@ -3862,6 +3852,16 @@ static void vc1_decode_i_blocks_adv(VC1Context *v)
                 }
                 s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize, 1);
                 s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
+                if(!s->first_slice_line) {
+                    s->dsp.vc1_v_overlap(s->dest[0], s->linesize, 0);
+                    s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize, 0);
+                    if(!(s->flags & CODEC_FLAG_GRAY)) {
+                        s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize, s->mb_y&1);
+                        s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize, s->mb_y&1);
+                    }
+                }
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize, 1);
+                s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize, 1);
             }
 
             if(get_bits_count(&s->gb) > v->bits) {