git.sesse.net Git - ffmpeg/blob - libavcodec/h264_mb.c

   1 /*
   2  * H.26L/H.264/AVC/JVT/14496-10/... decoder
   3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
   4  *
   5  * This file is part of Libav.
   6  *
   7  * Libav is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * Libav is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with Libav; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  20  */
  21
  22 /**
  23  * @file
  24  * H.264 / AVC / MPEG-4 part10 macroblock decoding
  25  */
  26
  27 #include <stdint.h>
  28
  29 #include "config.h"
  30
  31 #include "libavutil/common.h"
  32 #include "libavutil/intreadwrite.h"
  33 #include "avcodec.h"
  34 #include "h264.h"
  35 #include "qpeldsp.h"
  36 #include "thread.h"
  37
  38 static inline int get_lowest_part_list_y(H264SliceContext *sl,
  39                                          int n, int height, int y_offset, int list)
  40 {
  41     int raw_my             = sl->mv_cache[list][scan8[n]][1];
  42     int filter_height_up   = (raw_my & 3) ? 2 : 0;
  43     int filter_height_down = (raw_my & 3) ? 3 : 0;
  44     int full_my            = (raw_my >> 2) + y_offset;
  45     int top                = full_my - filter_height_up;
  46     int bottom             = full_my + filter_height_down + height;
  47
  48     return FFMAX(abs(top), bottom);
  49 }
  50
  51 static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
  52                                      int refs[2][48], int n,
  53                                      int height, int y_offset, int list0,
  54                                      int list1, int *nrefs)
  55 {
  56     int my;
  57
  58     y_offset += 16 * (sl->mb_y >> MB_FIELD(sl));
  59
  60     if (list0) {
  61         int ref_n = sl->ref_cache[0][scan8[n]];
  62         H264Ref *ref = &sl->ref_list[0][ref_n];
  63
  64         // Error resilience puts the current picture in the ref list.
  65         // Don't try to wait on these as it will cause a deadlock.
  66         // Fields can wait on each other, though.
  67         if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
  68             (ref->reference & 3) != h->picture_structure) {
  69             my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
  70             if (refs[0][ref_n] < 0)
  71                 nrefs[0] += 1;
  72             refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
  73         }
  74     }
  75
  76     if (list1) {
  77         int ref_n    = sl->ref_cache[1][scan8[n]];
  78         H264Ref *ref = &sl->ref_list[1][ref_n];
  79
  80         if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
  81             (ref->reference & 3) != h->picture_structure) {
  82             my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
  83             if (refs[1][ref_n] < 0)
  84                 nrefs[1] += 1;
  85             refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
  86         }
  87     }
  88 }
  89
  90 /**
  91  * Wait until all reference frames are available for MC operations.
  92  *
  93  * @param h the H.264 context
  94  */
  95 static void await_references(const H264Context *h, H264SliceContext *sl)
  96 {
  97     const int mb_xy   = sl->mb_xy;
  98     const int mb_type = h->cur_pic.mb_type[mb_xy];
  99     int refs[2][48];
 100     int nrefs[2] = { 0 };
 101     int ref, list;
 102
 103     memset(refs, -1, sizeof(refs));
 104
 105     if (IS_16X16(mb_type)) {
 106         get_lowest_part_y(h, sl, refs, 0, 16, 0,
 107                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 108     } else if (IS_16X8(mb_type)) {
 109         get_lowest_part_y(h, sl, refs, 0, 8, 0,
 110                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 111         get_lowest_part_y(h, sl, refs, 8, 8, 8,
 112                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
 113     } else if (IS_8X16(mb_type)) {
 114         get_lowest_part_y(h, sl, refs, 0, 16, 0,
 115                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 116         get_lowest_part_y(h, sl, refs, 4, 16, 0,
 117                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
 118     } else {
 119         int i;
 120
 121         assert(IS_8X8(mb_type));
 122
 123         for (i = 0; i < 4; i++) {
 124             const int sub_mb_type = sl->sub_mb_type[i];
 125             const int n           = 4 * i;
 126             int y_offset          = (i & 2) << 2;
 127
 128             if (IS_SUB_8X8(sub_mb_type)) {
 129                 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
 130                                   IS_DIR(sub_mb_type, 0, 0),
 131                                   IS_DIR(sub_mb_type, 0, 1),
 132                                   nrefs);
 133             } else if (IS_SUB_8X4(sub_mb_type)) {
 134                 get_lowest_part_y(h, sl, refs, n, 4, y_offset,
 135                                   IS_DIR(sub_mb_type, 0, 0),
 136                                   IS_DIR(sub_mb_type, 0, 1),
 137                                   nrefs);
 138                 get_lowest_part_y(h, sl, refs, n + 2, 4, y_offset + 4,
 139                                   IS_DIR(sub_mb_type, 0, 0),
 140                                   IS_DIR(sub_mb_type, 0, 1),
 141                                   nrefs);
 142             } else if (IS_SUB_4X8(sub_mb_type)) {
 143                 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
 144                                   IS_DIR(sub_mb_type, 0, 0),
 145                                   IS_DIR(sub_mb_type, 0, 1),
 146                                   nrefs);
 147                 get_lowest_part_y(h, sl, refs, n + 1, 8, y_offset,
 148                                   IS_DIR(sub_mb_type, 0, 0),
 149                                   IS_DIR(sub_mb_type, 0, 1),
 150                                   nrefs);
 151             } else {
 152                 int j;
 153                 assert(IS_SUB_4X4(sub_mb_type));
 154                 for (j = 0; j < 4; j++) {
 155                     int sub_y_offset = y_offset + 2 * (j & 2);
 156                     get_lowest_part_y(h, sl, refs, n + j, 4, sub_y_offset,
 157                                       IS_DIR(sub_mb_type, 0, 0),
 158                                       IS_DIR(sub_mb_type, 0, 1),
 159                                       nrefs);
 160                 }
 161             }
 162         }
 163     }
 164
 165     for (list = sl->list_count - 1; list >= 0; list--)
 166         for (ref = 0; ref < 48 && nrefs[list]; ref++) {
 167             int row = refs[list][ref];
 168             if (row >= 0) {
 169                 H264Ref *ref_pic  = &sl->ref_list[list][ref];
 170                 int ref_field         = ref_pic->reference - 1;
 171                 int ref_field_picture = ref_pic->parent->field_picture;
 172                 int pic_height        = 16 * h->mb_height >> ref_field_picture;
 173
 174                 row <<= MB_MBAFF(sl);
 175                 nrefs[list]--;
 176
 177                 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
 178                     ff_thread_await_progress(&ref_pic->parent->tf,
 179                                              FFMIN((row >> 1) - !(row & 1),
 180                                                    pic_height - 1),
 181                                              1);
 182                     ff_thread_await_progress(&ref_pic->parent->tf,
 183                                              FFMIN((row >> 1), pic_height - 1),
 184                                              0);
 185                 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
 186                     ff_thread_await_progress(&ref_pic->parent->tf,
 187                                              FFMIN(row * 2 + ref_field,
 188                                                    pic_height - 1),
 189                                              0);
 190                 } else if (FIELD_PICTURE(h)) {
 191                     ff_thread_await_progress(&ref_pic->parent->tf,
 192                                              FFMIN(row, pic_height - 1),
 193                                              ref_field);
 194                 } else {
 195                     ff_thread_await_progress(&ref_pic->parent->tf,
 196                                              FFMIN(row, pic_height - 1),
 197                                              0);
 198                 }
 199             }
 200         }
 201 }
 202
 203 static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,
 204                                          H264Ref *pic,
 205                                          int n, int square, int height,
 206                                          int delta, int list,
 207                                          uint8_t *dest_y, uint8_t *dest_cb,
 208                                          uint8_t *dest_cr,
 209                                          int src_x_offset, int src_y_offset,
 210                                          const qpel_mc_func *qpix_op,
 211                                          h264_chroma_mc_func chroma_op,
 212                                          int pixel_shift, int chroma_idc)
 213 {
 214     const int mx      = sl->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
 215     int my            = sl->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
 216     const int luma_xy = (mx & 3) + ((my & 3) << 2);
 217     ptrdiff_t offset  = ((mx >> 2) << pixel_shift) + (my >> 2) * sl->mb_linesize;
 218     uint8_t *src_y    = pic->data[0] + offset;
 219     uint8_t *src_cb, *src_cr;
 220     int extra_width  = 0;
 221     int extra_height = 0;
 222     int emu = 0;
 223     const int full_mx    = mx >> 2;
 224     const int full_my    = my >> 2;
 225     const int pic_width  = 16 * h->mb_width;
 226     const int pic_height = 16 * h->mb_height >> MB_FIELD(sl);
 227     int ysh;
 228
 229     if (mx & 7)
 230         extra_width -= 3;
 231     if (my & 7)
 232         extra_height -= 3;
 233
 234     if (full_mx                <          0 - extra_width  ||
 235         full_my                <          0 - extra_height ||
 236         full_mx + 16 /*FIXME*/ > pic_width  + extra_width  ||
 237         full_my + 16 /*FIXME*/ > pic_height + extra_height) {
 238         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 239                                  src_y - (2 << pixel_shift) - 2 * sl->mb_linesize,
 240                                  sl->mb_linesize, sl->mb_linesize,
 241                                  16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
 242                                  full_my - 2, pic_width, pic_height);
 243         src_y = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 244         emu   = 1;
 245     }
 246
 247     qpix_op[luma_xy](dest_y, src_y, sl->mb_linesize); // FIXME try variable height perhaps?
 248     if (!square)
 249         qpix_op[luma_xy](dest_y + delta, src_y + delta, sl->mb_linesize);
 250
 251     if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)
 252         return;
 253
 254     if (chroma_idc == 3 /* yuv444 */) {
 255         src_cb = pic->data[1] + offset;
 256         if (emu) {
 257             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 258                                      src_cb - (2 << pixel_shift) - 2 * sl->mb_linesize,
 259                                      sl->mb_linesize, sl->mb_linesize,
 260                                      16 + 5, 16 + 5 /*FIXME*/,
 261                                      full_mx - 2, full_my - 2,
 262                                      pic_width, pic_height);
 263             src_cb = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 264         }
 265         qpix_op[luma_xy](dest_cb, src_cb, sl->mb_linesize); // FIXME try variable height perhaps?
 266         if (!square)
 267             qpix_op[luma_xy](dest_cb + delta, src_cb + delta, sl->mb_linesize);
 268
 269         src_cr = pic->data[2] + offset;
 270         if (emu) {
 271             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 272                                      src_cr - (2 << pixel_shift) - 2 * sl->mb_linesize,
 273                                      sl->mb_linesize, sl->mb_linesize,
 274                                      16 + 5, 16 + 5 /*FIXME*/,
 275                                      full_mx - 2, full_my - 2,
 276                                      pic_width, pic_height);
 277             src_cr = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 278         }
 279         qpix_op[luma_xy](dest_cr, src_cr, sl->mb_linesize); // FIXME try variable height perhaps?
 280         if (!square)
 281             qpix_op[luma_xy](dest_cr + delta, src_cr + delta, sl->mb_linesize);
 282         return;
 283     }
 284
 285     ysh = 3 - (chroma_idc == 2 /* yuv422 */);
 286     if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(sl)) {
 287         // chroma offset when predicting from a field of opposite parity
 288         my  += 2 * ((sl->mb_y & 1) - (pic->reference - 1));
 289         emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
 290     }
 291
 292     src_cb = pic->data[1] + ((mx >> 3) << pixel_shift) +
 293              (my >> ysh) * sl->mb_uvlinesize;
 294     src_cr = pic->data[2] + ((mx >> 3) << pixel_shift) +
 295              (my >> ysh) * sl->mb_uvlinesize;
 296
 297     if (emu) {
 298         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cb,
 299                                  sl->mb_uvlinesize, sl->mb_uvlinesize,
 300                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
 301                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
 302         src_cb = sl->edge_emu_buffer;
 303     }
 304     chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,
 305               height >> (chroma_idc == 1 /* yuv420 */),
 306               mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
 307
 308     if (emu) {
 309         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cr,
 310                                  sl->mb_uvlinesize, sl->mb_uvlinesize,
 311                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
 312                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
 313         src_cr = sl->edge_emu_buffer;
 314     }
 315     chroma_op(dest_cr, src_cr, sl->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
 316               mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);
 317 }
 318
 319 static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,
 320                                          int n, int square,
 321                                          int height, int delta,
 322                                          uint8_t *dest_y, uint8_t *dest_cb,
 323                                          uint8_t *dest_cr,
 324                                          int x_offset, int y_offset,
 325                                          const qpel_mc_func *qpix_put,
 326                                          h264_chroma_mc_func chroma_put,
 327                                          const qpel_mc_func *qpix_avg,
 328                                          h264_chroma_mc_func chroma_avg,
 329                                          int list0, int list1,
 330                                          int pixel_shift, int chroma_idc)
 331 {
 332     const qpel_mc_func *qpix_op   = qpix_put;
 333     h264_chroma_mc_func chroma_op = chroma_put;
 334
 335     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 336     if (chroma_idc == 3 /* yuv444 */) {
 337         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 338         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 339     } else if (chroma_idc == 2 /* yuv422 */) {
 340         dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 341         dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 342     } else { /* yuv420 */
 343         dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 344         dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 345     }
 346     x_offset += 8 * sl->mb_x;
 347     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
 348
 349     if (list0) {
 350         H264Ref *ref = &sl->ref_list[0][sl->ref_cache[0][scan8[n]]];
 351         mc_dir_part(h, sl, ref, n, square, height, delta, 0,
 352                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 353                     qpix_op, chroma_op, pixel_shift, chroma_idc);
 354
 355         qpix_op   = qpix_avg;
 356         chroma_op = chroma_avg;
 357     }
 358
 359     if (list1) {
 360         H264Ref *ref = &sl->ref_list[1][sl->ref_cache[1][scan8[n]]];
 361         mc_dir_part(h, sl, ref, n, square, height, delta, 1,
 362                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 363                     qpix_op, chroma_op, pixel_shift, chroma_idc);
 364     }
 365 }
 366
 367 static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,
 368                                               int n, int square,
 369                                               int height, int delta,
 370                                               uint8_t *dest_y, uint8_t *dest_cb,
 371                                               uint8_t *dest_cr,
 372                                               int x_offset, int y_offset,
 373                                               const qpel_mc_func *qpix_put,
 374                                               h264_chroma_mc_func chroma_put,
 375                                               h264_weight_func luma_weight_op,
 376                                               h264_weight_func chroma_weight_op,
 377                                               h264_biweight_func luma_weight_avg,
 378                                               h264_biweight_func chroma_weight_avg,
 379                                               int list0, int list1,
 380                                               int pixel_shift, int chroma_idc)
 381 {
 382     int chroma_height;
 383
 384     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 385     if (chroma_idc == 3 /* yuv444 */) {
 386         chroma_height     = height;
 387         chroma_weight_avg = luma_weight_avg;
 388         chroma_weight_op  = luma_weight_op;
 389         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 390         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 391     } else if (chroma_idc == 2 /* yuv422 */) {
 392         chroma_height = height;
 393         dest_cb      += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 394         dest_cr      += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 395     } else { /* yuv420 */
 396         chroma_height = height >> 1;
 397         dest_cb      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 398         dest_cr      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 399     }
 400     x_offset += 8 * sl->mb_x;
 401     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
 402
 403     if (list0 && list1) {
 404         /* don't optimize for luma-only case, since B-frames usually
 405          * use implicit weights => chroma too. */
 406         uint8_t *tmp_cb = sl->bipred_scratchpad;
 407         uint8_t *tmp_cr = sl->bipred_scratchpad + (16 << pixel_shift);
 408         uint8_t *tmp_y  = sl->bipred_scratchpad + 16 * sl->mb_uvlinesize;
 409         int refn0       = sl->ref_cache[0][scan8[n]];
 410         int refn1       = sl->ref_cache[1][scan8[n]];
 411
 412         mc_dir_part(h, sl, &sl->ref_list[0][refn0], n, square, height, delta, 0,
 413                     dest_y, dest_cb, dest_cr,
 414                     x_offset, y_offset, qpix_put, chroma_put,
 415                     pixel_shift, chroma_idc);
 416         mc_dir_part(h, sl, &sl->ref_list[1][refn1], n, square, height, delta, 1,
 417                     tmp_y, tmp_cb, tmp_cr,
 418                     x_offset, y_offset, qpix_put, chroma_put,
 419                     pixel_shift, chroma_idc);
 420
 421         if (sl->pwt.use_weight == 2) {
 422             int weight0 = sl->pwt.implicit_weight[refn0][refn1][sl->mb_y & 1];
 423             int weight1 = 64 - weight0;
 424             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize,
 425                             height, 5, weight0, weight1, 0);
 426             chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,
 427                               chroma_height, 5, weight0, weight1, 0);
 428             chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,
 429                               chroma_height, 5, weight0, weight1, 0);
 430         } else {
 431             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,
 432                             sl->pwt.luma_log2_weight_denom,
 433                             sl->pwt.luma_weight[refn0][0][0],
 434                             sl->pwt.luma_weight[refn1][1][0],
 435                             sl->pwt.luma_weight[refn0][0][1] +
 436                             sl->pwt.luma_weight[refn1][1][1]);
 437             chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,
 438                               sl->pwt.chroma_log2_weight_denom,
 439                               sl->pwt.chroma_weight[refn0][0][0][0],
 440                               sl->pwt.chroma_weight[refn1][1][0][0],
 441                               sl->pwt.chroma_weight[refn0][0][0][1] +
 442                               sl->pwt.chroma_weight[refn1][1][0][1]);
 443             chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,
 444                               sl->pwt.chroma_log2_weight_denom,
 445                               sl->pwt.chroma_weight[refn0][0][1][0],
 446                               sl->pwt.chroma_weight[refn1][1][1][0],
 447                               sl->pwt.chroma_weight[refn0][0][1][1] +
 448                               sl->pwt.chroma_weight[refn1][1][1][1]);
 449         }
 450     } else {
 451         int list     = list1 ? 1 : 0;
 452         int refn     = sl->ref_cache[list][scan8[n]];
 453         H264Ref *ref = &sl->ref_list[list][refn];
 454         mc_dir_part(h, sl, ref, n, square, height, delta, list,
 455                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 456                     qpix_put, chroma_put, pixel_shift, chroma_idc);
 457
 458         luma_weight_op(dest_y, sl->mb_linesize, height,
 459                        sl->pwt.luma_log2_weight_denom,
 460                        sl->pwt.luma_weight[refn][list][0],
 461                        sl->pwt.luma_weight[refn][list][1]);
 462         if (sl->pwt.use_weight_chroma) {
 463             chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,
 464                              sl->pwt.chroma_log2_weight_denom,
 465                              sl->pwt.chroma_weight[refn][list][0][0],
 466                              sl->pwt.chroma_weight[refn][list][0][1]);
 467             chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,
 468                              sl->pwt.chroma_log2_weight_denom,
 469                              sl->pwt.chroma_weight[refn][list][1][0],
 470                              sl->pwt.chroma_weight[refn][list][1][1]);
 471         }
 472     }
 473 }
 474
 475 static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,
 476                                              int list, int pixel_shift,
 477                                              int chroma_idc)
 478 {
 479     /* fetch pixels for estimated mv 4 macroblocks ahead
 480      * optimized for 64byte cache lines */
 481     const int refn = sl->ref_cache[list][scan8[0]];
 482     if (refn >= 0) {
 483         const int mx  = (sl->mv_cache[list][scan8[0]][0] >> 2) + 16 * sl->mb_x + 8;
 484         const int my  = (sl->mv_cache[list][scan8[0]][1] >> 2) + 16 * sl->mb_y;
 485         uint8_t **src = sl->ref_list[list][refn].data;
 486         int off       = (mx << pixel_shift) +
 487                         (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +
 488                         (64 << pixel_shift);
 489         h->vdsp.prefetch(src[0] + off, sl->linesize, 4);
 490         if (chroma_idc == 3 /* yuv444 */) {
 491             h->vdsp.prefetch(src[1] + off, sl->linesize, 4);
 492             h->vdsp.prefetch(src[2] + off, sl->linesize, 4);
 493         } else {
 494             off = ((mx >> 1) << pixel_shift) +
 495                   ((my >> 1) + (sl->mb_x & 7)) * sl->uvlinesize +
 496                   (64 << pixel_shift);
 497             h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
 498         }
 499     }
 500 }
 501
 502 static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,
 503                                             uint8_t *src_y,
 504                                             uint8_t *src_cb, uint8_t *src_cr,
 505                                             int linesize, int uvlinesize,
 506                                             int xchg, int chroma444,
 507                                             int simple, int pixel_shift)
 508 {
 509     int deblock_topleft;
 510     int deblock_top;
 511     int top_idx = 1;
 512     uint8_t *top_border_m1;
 513     uint8_t *top_border;
 514
 515     if (!simple && FRAME_MBAFF(h)) {
 516         if (sl->mb_y & 1) {
 517             if (!MB_MBAFF(sl))
 518                 return;
 519         } else {
 520             top_idx = MB_MBAFF(sl) ? 0 : 1;
 521         }
 522     }
 523
 524     if (sl->deblocking_filter == 2) {
 525         deblock_topleft = h->slice_table[sl->mb_xy - 1 - h->mb_stride] == sl->slice_num;
 526         deblock_top     = sl->top_type;
 527     } else {
 528         deblock_topleft = (sl->mb_x > 0);
 529         deblock_top     = (sl->mb_y > !!MB_FIELD(sl));
 530     }
 531
 532     src_y  -= linesize   + 1 + pixel_shift;
 533     src_cb -= uvlinesize + 1 + pixel_shift;
 534     src_cr -= uvlinesize + 1 + pixel_shift;
 535
 536     top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];
 537     top_border    = sl->top_borders[top_idx][sl->mb_x];
 538
 539 #define XCHG(a, b, xchg)                        \
 540     if (pixel_shift) {                          \
 541         if (xchg) {                             \
 542             AV_SWAP64(b + 0, a + 0);            \
 543             AV_SWAP64(b + 8, a + 8);            \
 544         } else {                                \
 545             AV_COPY128(b, a);                   \
 546         }                                       \
 547     } else if (xchg)                            \
 548         AV_SWAP64(b, a);                        \
 549     else                                        \
 550         AV_COPY64(b, a);
 551
 552     if (deblock_top) {
 553         if (deblock_topleft) {
 554             XCHG(top_border_m1 + (8 << pixel_shift),
 555                  src_y - (7 << pixel_shift), 1);
 556         }
 557         XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
 558         XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
 559         if (sl->mb_x + 1 < h->mb_width) {
 560             XCHG(sl->top_borders[top_idx][sl->mb_x + 1],
 561                  src_y + (17 << pixel_shift), 1);
 562         }
 563     }
 564     if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 565         if (chroma444) {
 566             if (deblock_top) {
 567                 if (deblock_topleft) {
 568                     XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
 569                     XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
 570                 }
 571                 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
 572                 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
 573                 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
 574                 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
 575                 if (sl->mb_x + 1 < h->mb_width) {
 576                     XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
 577                     XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
 578                 }
 579             }
 580         } else {
 581             if (deblock_top) {
 582                 if (deblock_topleft) {
 583                     XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
 584                     XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
 585                 }
 586                 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
 587                 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
 588             }
 589         }
 590     }
 591 }
 592
 593 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
 594                                         int index)
 595 {
 596     if (high_bit_depth) {
 597         return AV_RN32A(((int32_t *)mb) + index);
 598     } else
 599         return AV_RN16A(mb + index);
 600 }
 601
 602 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
 603                                          int index, int value)
 604 {
 605     if (high_bit_depth) {
 606         AV_WN32A(((int32_t *)mb) + index, value);
 607     } else
 608         AV_WN16A(mb + index, value);
 609 }
 610
 611 static av_always_inline void hl_decode_mb_predict_luma(const H264Context *h,
 612                                                        H264SliceContext *sl,
 613                                                        int mb_type, int simple,
 614                                                        int transform_bypass,
 615                                                        int pixel_shift,
 616                                                        const int *block_offset,
 617                                                        int linesize,
 618                                                        uint8_t *dest_y, int p)
 619 {
 620     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
 621     void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
 622     int i;
 623     int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
 624     block_offset += 16 * p;
 625     if (IS_INTRA4x4(mb_type)) {
 626         if (IS_8x8DCT(mb_type)) {
 627             if (transform_bypass) {
 628                 idct_dc_add =
 629                 idct_add    = h->h264dsp.h264_add_pixels8_clear;
 630             } else {
 631                 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
 632                 idct_add    = h->h264dsp.h264_idct8_add;
 633             }
 634             for (i = 0; i < 16; i += 4) {
 635                 uint8_t *const ptr = dest_y + block_offset[i];
 636                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];
 637                 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
 638                     h->hpc.pred8x8l_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 639                 } else {
 640                     const int nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
 641                     h->hpc.pred8x8l[dir](ptr, (sl->topleft_samples_available << i) & 0x8000,
 642                                          (sl->topright_samples_available << i) & 0x4000, linesize);
 643                     if (nnz) {
 644                         if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 645                             idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 646                         else
 647                             idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 648                     }
 649                 }
 650             }
 651         } else {
 652             if (transform_bypass) {
 653                 idct_dc_add  =
 654                 idct_add     = h->h264dsp.h264_add_pixels4_clear;
 655             } else {
 656                 idct_dc_add = h->h264dsp.h264_idct_dc_add;
 657                 idct_add    = h->h264dsp.h264_idct_add;
 658             }
 659             for (i = 0; i < 16; i++) {
 660                 uint8_t *const ptr = dest_y + block_offset[i];
 661                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];
 662
 663                 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
 664                     h->hpc.pred4x4_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 665                 } else {
 666                     uint8_t *topright;
 667                     int nnz, tr;
 668                     uint64_t tr_high;
 669                     if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
 670                         const int topright_avail = (sl->topright_samples_available << i) & 0x8000;
 671                         assert(sl->mb_y || linesize <= block_offset[i]);
 672                         if (!topright_avail) {
 673                             if (pixel_shift) {
 674                                 tr_high  = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
 675                                 topright = (uint8_t *)&tr_high;
 676                             } else {
 677                                 tr       = ptr[3 - linesize] * 0x01010101u;
 678                                 topright = (uint8_t *)&tr;
 679                             }
 680                         } else
 681                             topright = ptr + (4 << pixel_shift) - linesize;
 682                     } else
 683                         topright = NULL;
 684
 685                     h->hpc.pred4x4[dir](ptr, topright, linesize);
 686                     nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
 687                     if (nnz) {
 688                         if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 689                             idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 690                         else
 691                             idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 692                     }
 693                 }
 694             }
 695         }
 696     } else {
 697         h->hpc.pred16x16[sl->intra16x16_pred_mode](dest_y, linesize);
 698         if (sl->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
 699             if (!transform_bypass)
 700                 h->h264dsp.h264_luma_dc_dequant_idct(sl->mb + (p * 256 << pixel_shift),
 701                                                      sl->mb_luma_dc[p],
 702                                                      h->ps.pps->dequant4_coeff[p][qscale][0]);
 703             else {
 704                 static const uint8_t dc_mapping[16] = {
 705                      0 * 16,  1 * 16,  4 * 16,  5 * 16,
 706                      2 * 16,  3 * 16,  6 * 16,  7 * 16,
 707                      8 * 16,  9 * 16, 12 * 16, 13 * 16,
 708                     10 * 16, 11 * 16, 14 * 16, 15 * 16
 709                 };
 710                 for (i = 0; i < 16; i++)
 711                     dctcoef_set(sl->mb + (p * 256 << pixel_shift),
 712                                 pixel_shift, dc_mapping[i],
 713                                 dctcoef_get(sl->mb_luma_dc[p],
 714                                             pixel_shift, i));
 715             }
 716         }
 717     }
 718 }
 719
 720 static av_always_inline void hl_decode_mb_idct_luma(const H264Context *h, H264SliceContext *sl,
 721                                                     int mb_type, int simple,
 722                                                     int transform_bypass,
 723                                                     int pixel_shift,
 724                                                     const int *block_offset,
 725                                                     int linesize,
 726                                                     uint8_t *dest_y, int p)
 727 {
 728     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
 729     int i;
 730     block_offset += 16 * p;
 731     if (!IS_INTRA4x4(mb_type)) {
 732         if (IS_INTRA16x16(mb_type)) {
 733             if (transform_bypass) {
 734                 if (h->ps.sps->profile_idc == 244 &&
 735                     (sl->intra16x16_pred_mode == VERT_PRED8x8 ||
 736                      sl->intra16x16_pred_mode == HOR_PRED8x8)) {
 737                     h->hpc.pred16x16_add[sl->intra16x16_pred_mode](dest_y, block_offset,
 738                                                                    sl->mb + (p * 256 << pixel_shift),
 739                                                                    linesize);
 740                 } else {
 741                     for (i = 0; i < 16; i++)
 742                         if (sl->non_zero_count_cache[scan8[i + p * 16]] ||
 743                             dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 744                             h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
 745                                                               sl->mb + (i * 16 + p * 256 << pixel_shift),
 746                                                               linesize);
 747                 }
 748             } else {
 749                 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
 750                                                 sl->mb + (p * 256 << pixel_shift),
 751                                                 linesize,
 752                                                 sl->non_zero_count_cache + p * 5 * 8);
 753             }
 754         } else if (sl->cbp & 15) {
 755             if (transform_bypass) {
 756                 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
 757                 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
 758                     : h->h264dsp.h264_add_pixels4_clear;
 759                 for (i = 0; i < 16; i += di)
 760                     if (sl->non_zero_count_cache[scan8[i + p * 16]])
 761                         idct_add(dest_y + block_offset[i],
 762                                  sl->mb + (i * 16 + p * 256 << pixel_shift),
 763                                  linesize);
 764             } else {
 765                 if (IS_8x8DCT(mb_type))
 766                     h->h264dsp.h264_idct8_add4(dest_y, block_offset,
 767                                                sl->mb + (p * 256 << pixel_shift),
 768                                                linesize,
 769                                                sl->non_zero_count_cache + p * 5 * 8);
 770                 else
 771                     h->h264dsp.h264_idct_add16(dest_y, block_offset,
 772                                                sl->mb + (p * 256 << pixel_shift),
 773                                                linesize,
 774                                                sl->non_zero_count_cache + p * 5 * 8);
 775             }
 776         }
 777     }
 778 }
 779
 780 #define BITS   8
 781 #define SIMPLE 1
 782 #include "h264_mb_template.c"
 783
 784 #undef  BITS
 785 #define BITS   16
 786 #include "h264_mb_template.c"
 787
 788 #undef  SIMPLE
 789 #define SIMPLE 0
 790 #include "h264_mb_template.c"
 791
 792 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
 793 {
 794     const int mb_xy   = sl->mb_xy;
 795     const int mb_type = h->cur_pic.mb_type[mb_xy];
 796     int is_complex    = CONFIG_SMALL || sl->is_complex ||
 797                         IS_INTRA_PCM(mb_type) || sl->qscale == 0;
 798
 799     if (CHROMA444(h)) {
 800         if (is_complex || h->pixel_shift)
 801             hl_decode_mb_444_complex(h, sl);
 802         else
 803             hl_decode_mb_444_simple_8(h, sl);
 804     } else if (is_complex) {
 805         hl_decode_mb_complex(h, sl);
 806     } else if (h->pixel_shift) {
 807         hl_decode_mb_simple_16(h, sl);
 808     } else
 809         hl_decode_mb_simple_8(h, sl);
 810 }