avcodec/vc1_block: Remove dead calls to ff_mpeg_draw_horiz_band()

The VC-1 decoders don't support draw_horiz_band at all.

Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>

libavcodec/dxva2_vc1.c

@@ -372,8 +372,6 @@ static int dxva2_vc1_end_frame(AVCodecContext *avctx)
                                     &ctx_pic->pp, sizeof(ctx_pic->pp),
                                     NULL, 0,
                                     commit_bitstream_and_slice_buffer);
-    if (!ret)
-        ff_mpeg_draw_horiz_band(&v->s, 0, avctx->height);
     return ret;
 }
 

libavcodec/vaapi_vc1.c

@@ -457,8 +457,6 @@ static int vaapi_vc1_end_frame(AVCodecContext *avctx)
     if (ret < 0)
         goto fail;
 
-    ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
-
 fail:
     return ret;
 }

libavcodec/vc1_block.c

@@ -2640,15 +2640,9 @@ static void vc1_decode_i_blocks(VC1Context *v)
             v->left_blk_idx = (v->left_blk_idx + 1) % (v->end_mb_x + 2);
             v->cur_blk_idx = (v->cur_blk_idx + 1) % (v->end_mb_x + 2);
         }
-        if (!v->s.loop_filter)
-            ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
-        else if (s->mb_y)
-            ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
 
         s->first_slice_line = 0;
     }
-    if (v->s.loop_filter)
-        ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
 
     /* This is intentionally mb_height and not end_mb_y - unlike in advanced
      * profile, these only differ are when decoding MSS2 rectangles. */
@@ -2786,15 +2780,9 @@ static int vc1_decode_i_blocks_adv(VC1Context *v)
             inc_blk_idx(v->left_blk_idx);
             inc_blk_idx(v->cur_blk_idx);
         }
-        if (!v->s.loop_filter)
-            ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
-        else if (s->mb_y)
-            ff_mpeg_draw_horiz_band(s, (s->mb_y-1) * 16, 16);
         s->first_slice_line = 0;
     }
 
-    if (v->s.loop_filter)
-        ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
     ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
                     (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
     return 0;
@@ -2882,12 +2870,8 @@ static void vc1_decode_p_blocks(VC1Context *v)
         memmove(v->luma_mv_base,
                 v->luma_mv - s->mb_stride,
                 sizeof(v->luma_mv_base[0]) * 2 * s->mb_stride);
-        if (s->mb_y != s->start_mb_y)
-            ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
         s->first_slice_line = 0;
     }
-    if (s->end_mb_y >= s->start_mb_y)
-        ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
     ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
                     (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
 }
@@ -2964,14 +2948,8 @@ static void vc1_decode_b_blocks(VC1Context *v)
         memmove(v->is_intra_base,
                 v->is_intra - s->mb_stride,
                 sizeof(v->is_intra_base[0]) * 2 * s->mb_stride);
-        if (!v->s.loop_filter)
-            ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
-        else if (s->mb_y)
-            ff_mpeg_draw_horiz_band(s, (s->mb_y - 1) * 16, 16);
         s->first_slice_line = 0;
     }
-    if (v->s.loop_filter)
-        ff_mpeg_draw_horiz_band(s, (s->end_mb_y - 1) * 16, 16);
     ff_er_add_slice(&s->er, 0, s->start_mb_y << v->field_mode, s->mb_width - 1,
                     (s->end_mb_y << v->field_mode) - 1, ER_MB_END);
 }
@@ -2992,7 +2970,6 @@ static void vc1_decode_skip_blocks(VC1Context *v)
         memcpy(s->dest[0], s->last_picture.f->data[0] + s->mb_y * 16 * s->linesize,   s->linesize   * 16);
         memcpy(s->dest[1], s->last_picture.f->data[1] + s->mb_y *  8 * s->uvlinesize, s->uvlinesize *  8);
         memcpy(s->dest[2], s->last_picture.f->data[2] + s->mb_y *  8 * s->uvlinesize, s->uvlinesize *  8);
-        ff_mpeg_draw_horiz_band(s, s->mb_y * 16, 16);
         s->first_slice_line = 0;
     }
     s->pict_type = AV_PICTURE_TYPE_P;