git.sesse.net Git - ffmpeg/blob - libavcodec/vp9_mc_template.c

   1 /*
   2  * VP9 compatible video decoder
   3  *
   4  * Copyright (C) 2013 Ronald S. Bultje <rsbultje gmail com>
   5  * Copyright (C) 2013 Clément Bœsch <u pkh me>
   6  *
   7  * This file is part of FFmpeg.
   8  *
   9  * FFmpeg is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * FFmpeg is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with FFmpeg; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #define ROUNDED_DIV_MVx2(a, b) \
  25     (VP56mv) { .x = ROUNDED_DIV(a.x + b.x, 2), .y = ROUNDED_DIV(a.y + b.y, 2) }
  26 #define ROUNDED_DIV_MVx4(a, b, c, d) \
  27     (VP56mv) { .x = ROUNDED_DIV(a.x + b.x + c.x + d.x, 4), \
  28                .y = ROUNDED_DIV(a.y + b.y + c.y + d.y, 4) }
  29
  30 static void FN(inter_pred)(AVCodecContext *ctx)
  31 {
  32     static const uint8_t bwlog_tab[2][N_BS_SIZES] = {
  33         { 0, 0, 1, 1, 1, 2, 2, 2, 3, 3, 3, 4, 4 },
  34         { 1, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4 },
  35     };
  36     VP9Context *s = ctx->priv_data;
  37     VP9Block *b = s->b;
  38     int row = s->row, col = s->col;
  39     ThreadFrame *tref1 = &s->refs[s->refidx[b->ref[0]]], *tref2;
  40     AVFrame *ref1 = tref1->f, *ref2;
  41     int w1 = ref1->width, h1 = ref1->height, w2, h2;
  42     ptrdiff_t ls_y = s->y_stride, ls_uv = s->uv_stride;
  43
  44     if (b->comp) {
  45         tref2 = &s->refs[s->refidx[b->ref[1]]];
  46         ref2 = tref2->f;
  47         w2 = ref2->width;
  48         h2 = ref2->height;
  49     }
  50
  51     // y inter pred
  52     if (b->bs > BS_8x8) {
  53         VP56mv uvmv;
  54
  55         if (b->bs == BS_8x4) {
  56             mc_luma_dir(s, mc[3][b->filter][0], s->dst[0], ls_y,
  57                         ref1->data[0], ref1->linesize[0], tref1,
  58                         row << 3, col << 3, &b->mv[0][0], 8, 4, w1, h1, 0);
  59             mc_luma_dir(s, mc[3][b->filter][0],
  60                         s->dst[0] + 4 * ls_y, ls_y,
  61                         ref1->data[0], ref1->linesize[0], tref1,
  62                         (row << 3) + 4, col << 3, &b->mv[2][0], 8, 4, w1, h1, 0);
  63             w1 = (w1 + s->ss_h) >> s->ss_h;
  64             if (s->ss_v) {
  65                 h1 = (h1 + 1) >> 1;
  66                 uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[2][0]);
  67                 mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][0],
  68                               s->dst[1], s->dst[2], ls_uv,
  69                               ref1->data[1], ref1->linesize[1],
  70                               ref1->data[2], ref1->linesize[2], tref1,
  71                               row << 2, col << (3 - s->ss_h),
  72                               &uvmv, 8 >> s->ss_h, 4, w1, h1, 0);
  73             } else {
  74                 mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][0],
  75                               s->dst[1], s->dst[2], ls_uv,
  76                               ref1->data[1], ref1->linesize[1],
  77                               ref1->data[2], ref1->linesize[2], tref1,
  78                               row << 3, col << (3 - s->ss_h),
  79                               &b->mv[0][0], 8 >> s->ss_h, 4, w1, h1, 0);
  80                 // BUG for 4:2:2 bs=8x4, libvpx uses the wrong block index
  81                 // to get the motion vector for the bottom 4x4 block
  82                 // https://code.google.com/p/webm/issues/detail?id=993
  83                 if (s->ss_h == 0) {
  84                     uvmv = b->mv[2][0];
  85                 } else {
  86                     uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[2][0]);
  87                 }
  88                 mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][0],
  89                               s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
  90                               ref1->data[1], ref1->linesize[1],
  91                               ref1->data[2], ref1->linesize[2], tref1,
  92                               (row << 3) + 4, col << (3 - s->ss_h),
  93                               &uvmv, 8 >> s->ss_h, 4, w1, h1, 0);
  94             }
  95
  96             if (b->comp) {
  97                 mc_luma_dir(s, mc[3][b->filter][1], s->dst[0], ls_y,
  98                             ref2->data[0], ref2->linesize[0], tref2,
  99                             row << 3, col << 3, &b->mv[0][1], 8, 4, w2, h2, 1);
 100                 mc_luma_dir(s, mc[3][b->filter][1],
 101                             s->dst[0] + 4 * ls_y, ls_y,
 102                             ref2->data[0], ref2->linesize[0], tref2,
 103                             (row << 3) + 4, col << 3, &b->mv[2][1], 8, 4, w2, h2, 1);
 104                 w2 = (w2 + s->ss_h) >> s->ss_h;
 105                 if (s->ss_v) {
 106                     h2 = (h2 + 1) >> 1;
 107                     uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[2][1]);
 108                     mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][1],
 109                                   s->dst[1], s->dst[2], ls_uv,
 110                                   ref2->data[1], ref2->linesize[1],
 111                                   ref2->data[2], ref2->linesize[2], tref2,
 112                                   row << 2, col << (3 - s->ss_h),
 113                                   &uvmv, 8 >> s->ss_h, 4, w2, h2, 1);
 114                 } else {
 115                     mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][1],
 116                                   s->dst[1], s->dst[2], ls_uv,
 117                                   ref2->data[1], ref2->linesize[1],
 118                                   ref2->data[2], ref2->linesize[2], tref2,
 119                                   row << 3, col << (3 - s->ss_h),
 120                                   &b->mv[0][1], 8 >> s->ss_h, 4, w2, h2, 1);
 121                     // BUG for 4:2:2 bs=8x4, libvpx uses the wrong block index
 122                     // to get the motion vector for the bottom 4x4 block
 123                     // https://code.google.com/p/webm/issues/detail?id=993
 124                     if (s->ss_h == 0) {
 125                         uvmv = b->mv[2][1];
 126                     } else {
 127                         uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[2][1]);
 128                     }
 129                     mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][1],
 130                                   s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
 131                                   ref2->data[1], ref2->linesize[1],
 132                                   ref2->data[2], ref2->linesize[2], tref2,
 133                                   (row << 3) + 4, col << (3 - s->ss_h),
 134                                   &uvmv, 8 >> s->ss_h, 4, w2, h2, 1);
 135                 }
 136             }
 137         } else if (b->bs == BS_4x8) {
 138             mc_luma_dir(s, mc[4][b->filter][0], s->dst[0], ls_y,
 139                         ref1->data[0], ref1->linesize[0], tref1,
 140                         row << 3, col << 3, &b->mv[0][0], 4, 8, w1, h1, 0);
 141             mc_luma_dir(s, mc[4][b->filter][0], s->dst[0] + 4, ls_y,
 142                         ref1->data[0], ref1->linesize[0], tref1,
 143                         row << 3, (col << 3) + 4, &b->mv[1][0], 4, 8, w1, h1, 0);
 144             h1 = (h1 + s->ss_v) >> s->ss_v;
 145             if (s->ss_h) {
 146                 w1 = (w1 + 1) >> 1;
 147                 uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[1][0]);
 148                 mc_chroma_dir(s, mc[4][b->filter][0],
 149                               s->dst[1], s->dst[2], ls_uv,
 150                               ref1->data[1], ref1->linesize[1],
 151                               ref1->data[2], ref1->linesize[2], tref1,
 152                               row << (3 - s->ss_v), col << 2,
 153                               &uvmv, 4, 8 >> s->ss_v, w1, h1, 0);
 154             } else {
 155                 mc_chroma_dir(s, mc[4][b->filter][0],
 156                               s->dst[1], s->dst[2], ls_uv,
 157                               ref1->data[1], ref1->linesize[1],
 158                               ref1->data[2], ref1->linesize[2], tref1,
 159                               row << (3 - s->ss_v), col << 3,
 160                               &b->mv[0][0], 4, 8 >> s->ss_v, w1, h1, 0);
 161                 mc_chroma_dir(s, mc[4][b->filter][0],
 162                               s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 163                               ref1->data[1], ref1->linesize[1],
 164                               ref1->data[2], ref1->linesize[2], tref1,
 165                               row << (3 - s->ss_v), (col << 3) + 4,
 166                               &b->mv[1][0], 4, 8 >> s->ss_v, w1, h1, 0);
 167             }
 168
 169             if (b->comp) {
 170                 mc_luma_dir(s, mc[4][b->filter][1], s->dst[0], ls_y,
 171                             ref2->data[0], ref2->linesize[0], tref2,
 172                             row << 3, col << 3, &b->mv[0][1], 4, 8, w2, h2, 1);
 173                 mc_luma_dir(s, mc[4][b->filter][1], s->dst[0] + 4, ls_y,
 174                             ref2->data[0], ref2->linesize[0], tref2,
 175                             row << 3, (col << 3) + 4, &b->mv[1][1], 4, 8, w2, h2, 1);
 176                 h2 = (h2 + s->ss_v) >> s->ss_v;
 177                 if (s->ss_h) {
 178                     w2 = (w2 + 1) >> 1;
 179                     uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[1][1]);
 180                     mc_chroma_dir(s, mc[4][b->filter][1],
 181                                   s->dst[1], s->dst[2], ls_uv,
 182                                   ref2->data[1], ref2->linesize[1],
 183                                   ref2->data[2], ref2->linesize[2], tref2,
 184                                   row << (3 - s->ss_v), col << 2,
 185                                   &uvmv, 4, 8 >> s->ss_v, w2, h2, 1);
 186                 } else {
 187                     mc_chroma_dir(s, mc[4][b->filter][1],
 188                                   s->dst[1], s->dst[2], ls_uv,
 189                                   ref2->data[1], ref2->linesize[1],
 190                                   ref2->data[2], ref2->linesize[2], tref2,
 191                                   row << (3 - s->ss_v), col << 3,
 192                                   &b->mv[0][1], 4, 8 >> s->ss_v, w2, h2, 1);
 193                     mc_chroma_dir(s, mc[4][b->filter][1],
 194                                   s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 195                                   ref2->data[1], ref2->linesize[1],
 196                                   ref2->data[2], ref2->linesize[2], tref2,
 197                                   row << (3 - s->ss_v), (col << 3) + 4,
 198                                   &b->mv[1][1], 4, 8 >> s->ss_v, w2, h2, 1);
 199                 }
 200             }
 201         } else {
 202             av_assert2(b->bs == BS_4x4);
 203
 204             // FIXME if two horizontally adjacent blocks have the same MV,
 205             // do a w8 instead of a w4 call
 206             mc_luma_dir(s, mc[4][b->filter][0], s->dst[0], ls_y,
 207                         ref1->data[0], ref1->linesize[0], tref1,
 208                         row << 3, col << 3, &b->mv[0][0], 4, 4, w1, h1, 0);
 209             mc_luma_dir(s, mc[4][b->filter][0], s->dst[0] + 4, ls_y,
 210                         ref1->data[0], ref1->linesize[0], tref1,
 211                         row << 3, (col << 3) + 4, &b->mv[1][0], 4, 4, w1, h1, 0);
 212             mc_luma_dir(s, mc[4][b->filter][0],
 213                         s->dst[0] + 4 * ls_y, ls_y,
 214                         ref1->data[0], ref1->linesize[0], tref1,
 215                         (row << 3) + 4, col << 3, &b->mv[2][0], 4, 4, w1, h1, 0);
 216             mc_luma_dir(s, mc[4][b->filter][0],
 217                         s->dst[0] + 4 * ls_y + 4, ls_y,
 218                         ref1->data[0], ref1->linesize[0], tref1,
 219                         (row << 3) + 4, (col << 3) + 4, &b->mv[3][0], 4, 4, w1, h1, 0);
 220             if (s->ss_v) {
 221                 h1 = (h1 + 1) >> 1;
 222                 if (s->ss_h) {
 223                     w1 = (w1 + 1) >> 1;
 224                     uvmv = ROUNDED_DIV_MVx4(b->mv[0][0], b->mv[1][0],
 225                                             b->mv[2][0], b->mv[3][0]);
 226                     mc_chroma_dir(s, mc[4][b->filter][0],
 227                                   s->dst[1], s->dst[2], ls_uv,
 228                                   ref1->data[1], ref1->linesize[1],
 229                                   ref1->data[2], ref1->linesize[2], tref1,
 230                                   row << 2, col << 2,
 231                                   &uvmv, 4, 4, w1, h1, 0);
 232                 } else {
 233                     uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[2][0]);
 234                     mc_chroma_dir(s, mc[4][b->filter][0],
 235                                   s->dst[1], s->dst[2], ls_uv,
 236                                   ref1->data[1], ref1->linesize[1],
 237                                   ref1->data[2], ref1->linesize[2], tref1,
 238                                   row << 2, col << 3,
 239                                   &uvmv, 4, 4, w1, h1, 0);
 240                     uvmv = ROUNDED_DIV_MVx2(b->mv[1][0], b->mv[3][0]);
 241                     mc_chroma_dir(s, mc[4][b->filter][0],
 242                                   s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 243                                   ref1->data[1], ref1->linesize[1],
 244                                   ref1->data[2], ref1->linesize[2], tref1,
 245                                   row << 2, (col << 3) + 4,
 246                                   &uvmv, 4, 4, w1, h1, 0);
 247                 }
 248             } else {
 249                 if (s->ss_h) {
 250                     w1 = (w1 + 1) >> 1;
 251                     uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[1][0]);
 252                     mc_chroma_dir(s, mc[4][b->filter][0],
 253                                   s->dst[1], s->dst[2], ls_uv,
 254                                   ref1->data[1], ref1->linesize[1],
 255                                   ref1->data[2], ref1->linesize[2], tref1,
 256                                   row << 3, col << 2,
 257                                   &uvmv, 4, 4, w1, h1, 0);
 258                     // BUG libvpx uses wrong block index for 4:2:2 bs=4x4
 259                     // bottom block
 260                     // https://code.google.com/p/webm/issues/detail?id=993
 261                     uvmv = ROUNDED_DIV_MVx2(b->mv[1][0], b->mv[2][0]);
 262                     mc_chroma_dir(s, mc[4][b->filter][0],
 263                                   s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
 264                                   ref1->data[1], ref1->linesize[1],
 265                                   ref1->data[2], ref1->linesize[2], tref1,
 266                                   (row << 3) + 4, col << 2,
 267                                   &uvmv, 4, 4, w1, h1, 0);
 268                 } else {
 269                     mc_chroma_dir(s, mc[4][b->filter][0],
 270                                   s->dst[1], s->dst[2], ls_uv,
 271                                   ref1->data[1], ref1->linesize[1],
 272                                   ref1->data[2], ref1->linesize[2], tref1,
 273                                   row << 3, col << 3,
 274                                   &b->mv[0][0], 4, 4, w1, h1, 0);
 275                     mc_chroma_dir(s, mc[4][b->filter][0],
 276                                   s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 277                                   ref1->data[1], ref1->linesize[1],
 278                                   ref1->data[2], ref1->linesize[2], tref1,
 279                                   row << 3, (col << 3) + 4,
 280                                   &b->mv[1][0], 4, 4, w1, h1, 0);
 281                     mc_chroma_dir(s, mc[4][b->filter][0],
 282                                   s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
 283                                   ref1->data[1], ref1->linesize[1],
 284                                   ref1->data[2], ref1->linesize[2], tref1,
 285                                   (row << 3) + 4, col << 3,
 286                                   &b->mv[2][0], 4, 4, w1, h1, 0);
 287                     mc_chroma_dir(s, mc[4][b->filter][0],
 288                                   s->dst[1] + 4 * ls_uv + 4, s->dst[2] + 4 * ls_uv + 4, ls_uv,
 289                                   ref1->data[1], ref1->linesize[1],
 290                                   ref1->data[2], ref1->linesize[2], tref1,
 291                                   (row << 3) + 4, (col << 3) + 4,
 292                                   &b->mv[3][0], 4, 4, w1, h1, 0);
 293                 }
 294             }
 295
 296             if (b->comp) {
 297                 mc_luma_dir(s, mc[4][b->filter][1], s->dst[0], ls_y,
 298                             ref2->data[0], ref2->linesize[0], tref2,
 299                             row << 3, col << 3, &b->mv[0][1], 4, 4, w2, h2, 1);
 300                 mc_luma_dir(s, mc[4][b->filter][1], s->dst[0] + 4, ls_y,
 301                             ref2->data[0], ref2->linesize[0], tref2,
 302                             row << 3, (col << 3) + 4, &b->mv[1][1], 4, 4, w2, h2, 1);
 303                 mc_luma_dir(s, mc[4][b->filter][1],
 304                             s->dst[0] + 4 * ls_y, ls_y,
 305                             ref2->data[0], ref2->linesize[0], tref2,
 306                             (row << 3) + 4, col << 3, &b->mv[2][1], 4, 4, w2, h2, 1);
 307                 mc_luma_dir(s, mc[4][b->filter][1],
 308                             s->dst[0] + 4 * ls_y + 4, ls_y,
 309                             ref2->data[0], ref2->linesize[0], tref2,
 310                             (row << 3) + 4, (col << 3) + 4, &b->mv[3][1], 4, 4, w2, h2, 1);
 311                 if (s->ss_v) {
 312                     h2 = (h2 + 1) >> 1;
 313                     if (s->ss_h) {
 314                         w2 = (w2 + 1) >> 1;
 315                         uvmv = ROUNDED_DIV_MVx4(b->mv[0][1], b->mv[1][1],
 316                                                 b->mv[2][1], b->mv[3][1]);
 317                         mc_chroma_dir(s, mc[4][b->filter][1],
 318                                       s->dst[1], s->dst[2], ls_uv,
 319                                       ref2->data[1], ref2->linesize[1],
 320                                       ref2->data[2], ref2->linesize[2], tref2,
 321                                       row << 2, col << 2,
 322                                       &uvmv, 4, 4, w2, h2, 1);
 323                     } else {
 324                         uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[2][1]);
 325                         mc_chroma_dir(s, mc[4][b->filter][1],
 326                                       s->dst[1], s->dst[2], ls_uv,
 327                                       ref2->data[1], ref2->linesize[1],
 328                                       ref2->data[2], ref2->linesize[2], tref2,
 329                                       row << 2, col << 3,
 330                                       &uvmv, 4, 4, w2, h2, 1);
 331                         uvmv = ROUNDED_DIV_MVx2(b->mv[1][1], b->mv[3][1]);
 332                         mc_chroma_dir(s, mc[4][b->filter][1],
 333                                       s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 334                                       ref2->data[1], ref2->linesize[1],
 335                                       ref2->data[2], ref2->linesize[2], tref2,
 336                                       row << 2, (col << 3) + 4,
 337                                       &uvmv, 4, 4, w2, h2, 1);
 338                     }
 339                 } else {
 340                     if (s->ss_h) {
 341                         w2 = (w2 + 1) >> 1;
 342                         uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[1][1]);
 343                         mc_chroma_dir(s, mc[4][b->filter][1],
 344                                       s->dst[1], s->dst[2], ls_uv,
 345                                       ref2->data[1], ref2->linesize[1],
 346                                       ref2->data[2], ref2->linesize[2], tref2,
 347                                       row << 3, col << 2,
 348                                       &uvmv, 4, 4, w2, h2, 1);
 349                         // BUG libvpx uses wrong block index for 4:2:2 bs=4x4
 350                         // bottom block
 351                         // https://code.google.com/p/webm/issues/detail?id=993
 352                         uvmv = ROUNDED_DIV_MVx2(b->mv[1][1], b->mv[2][1]);
 353                         mc_chroma_dir(s, mc[4][b->filter][1],
 354                                       s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
 355                                       ref2->data[1], ref2->linesize[1],
 356                                       ref2->data[2], ref2->linesize[2], tref2,
 357                                       (row << 3) + 4, col << 2,
 358                                       &uvmv, 4, 4, w2, h2, 1);
 359                     } else {
 360                         mc_chroma_dir(s, mc[4][b->filter][1],
 361                                       s->dst[1], s->dst[2], ls_uv,
 362                                       ref2->data[1], ref2->linesize[1],
 363                                       ref2->data[2], ref2->linesize[2], tref2,
 364                                       row << 3, col << 3,
 365                                       &b->mv[0][1], 4, 4, w2, h2, 1);
 366                         mc_chroma_dir(s, mc[4][b->filter][1],
 367                                       s->dst[1] + 4, s->dst[2] + 4, ls_uv,
 368                                       ref2->data[1], ref2->linesize[1],
 369                                       ref2->data[2], ref2->linesize[2], tref2,
 370                                       row << 3, (col << 3) + 4,
 371                                       &b->mv[1][1], 4, 4, w2, h2, 1);
 372                         mc_chroma_dir(s, mc[4][b->filter][1],
 373                                       s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
 374                                       ref2->data[1], ref2->linesize[1],
 375                                       ref2->data[2], ref2->linesize[2], tref2,
 376                                       (row << 3) + 4, col << 3,
 377                                       &b->mv[2][1], 4, 4, w2, h2, 1);
 378                         mc_chroma_dir(s, mc[4][b->filter][1],
 379                                       s->dst[1] + 4 * ls_uv + 4, s->dst[2] + 4 * ls_uv + 4, ls_uv,
 380                                       ref2->data[1], ref2->linesize[1],
 381                                       ref2->data[2], ref2->linesize[2], tref2,
 382                                       (row << 3) + 4, (col << 3) + 4,
 383                                       &b->mv[3][1], 4, 4, w2, h2, 1);
 384                     }
 385                 }
 386             }
 387         }
 388     } else {
 389         int bwl = bwlog_tab[0][b->bs];
 390         int bw = bwh_tab[0][b->bs][0] * 4, bh = bwh_tab[0][b->bs][1] * 4;
 391         int uvbw = bwh_tab[s->ss_h][b->bs][0] * 4, uvbh = bwh_tab[s->ss_v][b->bs][1] * 4;
 392
 393         mc_luma_dir(s, mc[bwl][b->filter][0], s->dst[0], ls_y,
 394                     ref1->data[0], ref1->linesize[0], tref1,
 395                     row << 3, col << 3, &b->mv[0][0], bw, bh, w1, h1, 0);
 396         w1 = (w1 + s->ss_h) >> s->ss_h;
 397         h1 = (h1 + s->ss_v) >> s->ss_v;
 398         mc_chroma_dir(s, mc[bwl + s->ss_h][b->filter][0],
 399                       s->dst[1], s->dst[2], ls_uv,
 400                       ref1->data[1], ref1->linesize[1],
 401                       ref1->data[2], ref1->linesize[2], tref1,
 402                       row << (3 - s->ss_v), col << (3 - s->ss_h),
 403                       &b->mv[0][0], uvbw, uvbh, w1, h1, 0);
 404
 405         if (b->comp) {
 406             mc_luma_dir(s, mc[bwl][b->filter][1], s->dst[0], ls_y,
 407                         ref2->data[0], ref2->linesize[0], tref2,
 408                         row << 3, col << 3, &b->mv[0][1], bw, bh, w2, h2, 1);
 409             w2 = (w2 + s->ss_h) >> s->ss_h;
 410             h2 = (h2 + s->ss_v) >> s->ss_v;
 411             mc_chroma_dir(s, mc[bwl + s->ss_h][b->filter][1],
 412                           s->dst[1], s->dst[2], ls_uv,
 413                           ref2->data[1], ref2->linesize[1],
 414                           ref2->data[2], ref2->linesize[2], tref2,
 415                           row << (3 - s->ss_v), col << (3 - s->ss_h),
 416                           &b->mv[0][1], uvbw, uvbh, w2, h2, 1);
 417         }
 418     }
 419 }