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   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 FFmpeg.
   6  *
   7  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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 "h264dec.h"
  35 #include "h264_ps.h"
  36 #include "qpeldsp.h"
  37 #include "thread.h"
  38
  39 static inline int get_lowest_part_list_y(H264SliceContext *sl,
  40                                          int n, int height, int y_offset, int list)
  41 {
  42     int raw_my             = sl->mv_cache[list][scan8[n]][1];
  43     int filter_height_down = (raw_my & 3) ? 3 : 0;
  44     int full_my            = (raw_my >> 2) + y_offset;
  45     int bottom             = full_my + filter_height_down + height;
  46
  47     av_assert2(height >= 0);
  48
  49     return FFMAX(0, bottom);
  50 }
  51
  52 static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,
  53                                      int16_t refs[2][48], int n,
  54                                      int height, int y_offset, int list0,
  55                                      int list1, int *nrefs)
  56 {
  57     int my;
  58
  59     y_offset += 16 * (sl->mb_y >> MB_FIELD(sl));
  60
  61     if (list0) {
  62         int ref_n = sl->ref_cache[0][scan8[n]];
  63         H264Ref *ref = &sl->ref_list[0][ref_n];
  64
  65         // Error resilience puts the current picture in the ref list.
  66         // Don't try to wait on these as it will cause a deadlock.
  67         // Fields can wait on each other, though.
  68         if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
  69             (ref->reference & 3) != h->picture_structure) {
  70             my = get_lowest_part_list_y(sl, n, height, y_offset, 0);
  71             if (refs[0][ref_n] < 0)
  72                 nrefs[0] += 1;
  73             refs[0][ref_n] = FFMAX(refs[0][ref_n], my);
  74         }
  75     }
  76
  77     if (list1) {
  78         int ref_n    = sl->ref_cache[1][scan8[n]];
  79         H264Ref *ref = &sl->ref_list[1][ref_n];
  80
  81         if (ref->parent->tf.progress->data != h->cur_pic.tf.progress->data ||
  82             (ref->reference & 3) != h->picture_structure) {
  83             my = get_lowest_part_list_y(sl, n, height, y_offset, 1);
  84             if (refs[1][ref_n] < 0)
  85                 nrefs[1] += 1;
  86             refs[1][ref_n] = FFMAX(refs[1][ref_n], my);
  87         }
  88     }
  89 }
  90
  91 /**
  92  * Wait until all reference frames are available for MC operations.
  93  *
  94  * @param h the H.264 context
  95  */
  96 static void await_references(const H264Context *h, H264SliceContext *sl)
  97 {
  98     const int mb_xy   = sl->mb_xy;
  99     const int mb_type = h->cur_pic.mb_type[mb_xy];
 100     int16_t refs[2][48];
 101     int nrefs[2] = { 0 };
 102     int ref, list;
 103
 104     memset(refs, -1, sizeof(refs));
 105
 106     if (IS_16X16(mb_type)) {
 107         get_lowest_part_y(h, sl, refs, 0, 16, 0,
 108                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 109     } else if (IS_16X8(mb_type)) {
 110         get_lowest_part_y(h, sl, refs, 0, 8, 0,
 111                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 112         get_lowest_part_y(h, sl, refs, 8, 8, 8,
 113                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
 114     } else if (IS_8X16(mb_type)) {
 115         get_lowest_part_y(h, sl, refs, 0, 16, 0,
 116                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);
 117         get_lowest_part_y(h, sl, refs, 4, 16, 0,
 118                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);
 119     } else {
 120         int i;
 121
 122         av_assert2(IS_8X8(mb_type));
 123
 124         for (i = 0; i < 4; i++) {
 125             const int sub_mb_type = sl->sub_mb_type[i];
 126             const int n           = 4 * i;
 127             int y_offset          = (i & 2) << 2;
 128
 129             if (IS_SUB_8X8(sub_mb_type)) {
 130                 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
 131                                   IS_DIR(sub_mb_type, 0, 0),
 132                                   IS_DIR(sub_mb_type, 0, 1),
 133                                   nrefs);
 134             } else if (IS_SUB_8X4(sub_mb_type)) {
 135                 get_lowest_part_y(h, sl, refs, n, 4, y_offset,
 136                                   IS_DIR(sub_mb_type, 0, 0),
 137                                   IS_DIR(sub_mb_type, 0, 1),
 138                                   nrefs);
 139                 get_lowest_part_y(h, sl, refs, n + 2, 4, y_offset + 4,
 140                                   IS_DIR(sub_mb_type, 0, 0),
 141                                   IS_DIR(sub_mb_type, 0, 1),
 142                                   nrefs);
 143             } else if (IS_SUB_4X8(sub_mb_type)) {
 144                 get_lowest_part_y(h, sl, refs, n, 8, y_offset,
 145                                   IS_DIR(sub_mb_type, 0, 0),
 146                                   IS_DIR(sub_mb_type, 0, 1),
 147                                   nrefs);
 148                 get_lowest_part_y(h, sl, refs, n + 1, 8, y_offset,
 149                                   IS_DIR(sub_mb_type, 0, 0),
 150                                   IS_DIR(sub_mb_type, 0, 1),
 151                                   nrefs);
 152             } else {
 153                 int j;
 154                 av_assert2(IS_SUB_4X4(sub_mb_type));
 155                 for (j = 0; j < 4; j++) {
 156                     int sub_y_offset = y_offset + 2 * (j & 2);
 157                     get_lowest_part_y(h, sl, refs, n + j, 4, sub_y_offset,
 158                                       IS_DIR(sub_mb_type, 0, 0),
 159                                       IS_DIR(sub_mb_type, 0, 1),
 160                                       nrefs);
 161                 }
 162             }
 163         }
 164     }
 165
 166     for (list = sl->list_count - 1; list >= 0; list--)
 167         for (ref = 0; ref < 48 && nrefs[list]; ref++) {
 168             int row = refs[list][ref];
 169             if (row >= 0) {
 170                 H264Ref *ref_pic  = &sl->ref_list[list][ref];
 171                 int ref_field         = ref_pic->reference - 1;
 172                 int ref_field_picture = ref_pic->parent->field_picture;
 173                 int pic_height        = 16 * h->mb_height >> ref_field_picture;
 174
 175                 row <<= MB_MBAFF(sl);
 176                 nrefs[list]--;
 177
 178                 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields
 179                     av_assert2((ref_pic->parent->reference & 3) == 3);
 180                     ff_thread_await_progress(&ref_pic->parent->tf,
 181                                              FFMIN((row >> 1) - !(row & 1),
 182                                                    pic_height - 1),
 183                                              1);
 184                     ff_thread_await_progress(&ref_pic->parent->tf,
 185                                              FFMIN((row >> 1), pic_height - 1),
 186                                              0);
 187                 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame
 188                     ff_thread_await_progress(&ref_pic->parent->tf,
 189                                              FFMIN(row * 2 + ref_field,
 190                                                    pic_height - 1),
 191                                              0);
 192                 } else if (FIELD_PICTURE(h)) {
 193                     ff_thread_await_progress(&ref_pic->parent->tf,
 194                                              FFMIN(row, pic_height - 1),
 195                                              ref_field);
 196                 } else {
 197                     ff_thread_await_progress(&ref_pic->parent->tf,
 198                                              FFMIN(row, pic_height - 1),
 199                                              0);
 200                 }
 201             }
 202         }
 203 }
 204
 205 static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,
 206                                          H264Ref *pic,
 207                                          int n, int square, int height,
 208                                          int delta, int list,
 209                                          uint8_t *dest_y, uint8_t *dest_cb,
 210                                          uint8_t *dest_cr,
 211                                          int src_x_offset, int src_y_offset,
 212                                          const qpel_mc_func *qpix_op,
 213                                          h264_chroma_mc_func chroma_op,
 214                                          int pixel_shift, int chroma_idc)
 215 {
 216     const int mx      = sl->mv_cache[list][scan8[n]][0] + src_x_offset * 8;
 217     int my            = sl->mv_cache[list][scan8[n]][1] + src_y_offset * 8;
 218     const int luma_xy = (mx & 3) + ((my & 3) << 2);
 219     ptrdiff_t offset  = (mx >> 2) * (1 << pixel_shift) + (my >> 2) * sl->mb_linesize;
 220     uint8_t *src_y    = pic->data[0] + offset;
 221     uint8_t *src_cb, *src_cr;
 222     int extra_width  = 0;
 223     int extra_height = 0;
 224     int emu = 0;
 225     const int full_mx    = mx >> 2;
 226     const int full_my    = my >> 2;
 227     const int pic_width  = 16 * h->mb_width;
 228     const int pic_height = 16 * h->mb_height >> MB_FIELD(sl);
 229     int ysh;
 230
 231     if (mx & 7)
 232         extra_width -= 3;
 233     if (my & 7)
 234         extra_height -= 3;
 235
 236     if (full_mx                <          0 - extra_width  ||
 237         full_my                <          0 - extra_height ||
 238         full_mx + 16 /*FIXME*/ > pic_width  + extra_width  ||
 239         full_my + 16 /*FIXME*/ > pic_height + extra_height) {
 240         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 241                                  src_y - (2 << pixel_shift) - 2 * sl->mb_linesize,
 242                                  sl->mb_linesize, sl->mb_linesize,
 243                                  16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,
 244                                  full_my - 2, pic_width, pic_height);
 245         src_y = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 246         emu   = 1;
 247     }
 248
 249     qpix_op[luma_xy](dest_y, src_y, sl->mb_linesize); // FIXME try variable height perhaps?
 250     if (!square)
 251         qpix_op[luma_xy](dest_y + delta, src_y + delta, sl->mb_linesize);
 252
 253     if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)
 254         return;
 255
 256     if (chroma_idc == 3 /* yuv444 */) {
 257         src_cb = pic->data[1] + offset;
 258         if (emu) {
 259             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 260                                      src_cb - (2 << pixel_shift) - 2 * sl->mb_linesize,
 261                                      sl->mb_linesize, sl->mb_linesize,
 262                                      16 + 5, 16 + 5 /*FIXME*/,
 263                                      full_mx - 2, full_my - 2,
 264                                      pic_width, pic_height);
 265             src_cb = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 266         }
 267         qpix_op[luma_xy](dest_cb, src_cb, sl->mb_linesize); // FIXME try variable height perhaps?
 268         if (!square)
 269             qpix_op[luma_xy](dest_cb + delta, src_cb + delta, sl->mb_linesize);
 270
 271         src_cr = pic->data[2] + offset;
 272         if (emu) {
 273             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,
 274                                      src_cr - (2 << pixel_shift) - 2 * sl->mb_linesize,
 275                                      sl->mb_linesize, sl->mb_linesize,
 276                                      16 + 5, 16 + 5 /*FIXME*/,
 277                                      full_mx - 2, full_my - 2,
 278                                      pic_width, pic_height);
 279             src_cr = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;
 280         }
 281         qpix_op[luma_xy](dest_cr, src_cr, sl->mb_linesize); // FIXME try variable height perhaps?
 282         if (!square)
 283             qpix_op[luma_xy](dest_cr + delta, src_cr + delta, sl->mb_linesize);
 284         return;
 285     }
 286
 287     ysh = 3 - (chroma_idc == 2 /* yuv422 */);
 288     if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(sl)) {
 289         // chroma offset when predicting from a field of opposite parity
 290         my  += 2 * ((sl->mb_y & 1) - (pic->reference - 1));
 291         emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);
 292     }
 293
 294     src_cb = pic->data[1] + ((mx >> 3) * (1 << pixel_shift)) +
 295              (my >> ysh) * sl->mb_uvlinesize;
 296     src_cr = pic->data[2] + ((mx >> 3) * (1 << pixel_shift)) +
 297              (my >> ysh) * sl->mb_uvlinesize;
 298
 299     if (emu) {
 300         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cb,
 301                                  sl->mb_uvlinesize, sl->mb_uvlinesize,
 302                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
 303                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
 304         src_cb = sl->edge_emu_buffer;
 305     }
 306     chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,
 307               height >> (chroma_idc == 1 /* yuv420 */),
 308               mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
 309
 310     if (emu) {
 311         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cr,
 312                                  sl->mb_uvlinesize, sl->mb_uvlinesize,
 313                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),
 314                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));
 315         src_cr = sl->edge_emu_buffer;
 316     }
 317     chroma_op(dest_cr, src_cr, sl->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),
 318               mx & 7, ((unsigned)my << (chroma_idc == 2 /* yuv422 */)) & 7);
 319 }
 320
 321 static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,
 322                                          int n, int square,
 323                                          int height, int delta,
 324                                          uint8_t *dest_y, uint8_t *dest_cb,
 325                                          uint8_t *dest_cr,
 326                                          int x_offset, int y_offset,
 327                                          const qpel_mc_func *qpix_put,
 328                                          h264_chroma_mc_func chroma_put,
 329                                          const qpel_mc_func *qpix_avg,
 330                                          h264_chroma_mc_func chroma_avg,
 331                                          int list0, int list1,
 332                                          int pixel_shift, int chroma_idc)
 333 {
 334     const qpel_mc_func *qpix_op   = qpix_put;
 335     h264_chroma_mc_func chroma_op = chroma_put;
 336
 337     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 338     if (chroma_idc == 3 /* yuv444 */) {
 339         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 340         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 341     } else if (chroma_idc == 2 /* yuv422 */) {
 342         dest_cb += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 343         dest_cr += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 344     } else { /* yuv420 */
 345         dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 346         dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 347     }
 348     x_offset += 8 * sl->mb_x;
 349     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
 350
 351     if (list0) {
 352         H264Ref *ref = &sl->ref_list[0][sl->ref_cache[0][scan8[n]]];
 353         mc_dir_part(h, sl, ref, n, square, height, delta, 0,
 354                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 355                     qpix_op, chroma_op, pixel_shift, chroma_idc);
 356
 357         qpix_op   = qpix_avg;
 358         chroma_op = chroma_avg;
 359     }
 360
 361     if (list1) {
 362         H264Ref *ref = &sl->ref_list[1][sl->ref_cache[1][scan8[n]]];
 363         mc_dir_part(h, sl, ref, n, square, height, delta, 1,
 364                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 365                     qpix_op, chroma_op, pixel_shift, chroma_idc);
 366     }
 367 }
 368
 369 static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,
 370                                               int n, int square,
 371                                               int height, int delta,
 372                                               uint8_t *dest_y, uint8_t *dest_cb,
 373                                               uint8_t *dest_cr,
 374                                               int x_offset, int y_offset,
 375                                               const qpel_mc_func *qpix_put,
 376                                               h264_chroma_mc_func chroma_put,
 377                                               h264_weight_func luma_weight_op,
 378                                               h264_weight_func chroma_weight_op,
 379                                               h264_biweight_func luma_weight_avg,
 380                                               h264_biweight_func chroma_weight_avg,
 381                                               int list0, int list1,
 382                                               int pixel_shift, int chroma_idc)
 383 {
 384     int chroma_height;
 385
 386     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 387     if (chroma_idc == 3 /* yuv444 */) {
 388         chroma_height     = height;
 389         chroma_weight_avg = luma_weight_avg;
 390         chroma_weight_op  = luma_weight_op;
 391         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 392         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * sl->mb_linesize;
 393     } else if (chroma_idc == 2 /* yuv422 */) {
 394         chroma_height = height;
 395         dest_cb      += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 396         dest_cr      += (x_offset << pixel_shift) + 2 * y_offset * sl->mb_uvlinesize;
 397     } else { /* yuv420 */
 398         chroma_height = height >> 1;
 399         dest_cb      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 400         dest_cr      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;
 401     }
 402     x_offset += 8 * sl->mb_x;
 403     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));
 404
 405     if (list0 && list1) {
 406         /* don't optimize for luma-only case, since B-frames usually
 407          * use implicit weights => chroma too. */
 408         uint8_t *tmp_cb = sl->bipred_scratchpad;
 409         uint8_t *tmp_cr = sl->bipred_scratchpad + (16 << pixel_shift);
 410         uint8_t *tmp_y  = sl->bipred_scratchpad + 16 * sl->mb_uvlinesize;
 411         int refn0       = sl->ref_cache[0][scan8[n]];
 412         int refn1       = sl->ref_cache[1][scan8[n]];
 413
 414         mc_dir_part(h, sl, &sl->ref_list[0][refn0], n, square, height, delta, 0,
 415                     dest_y, dest_cb, dest_cr,
 416                     x_offset, y_offset, qpix_put, chroma_put,
 417                     pixel_shift, chroma_idc);
 418         mc_dir_part(h, sl, &sl->ref_list[1][refn1], n, square, height, delta, 1,
 419                     tmp_y, tmp_cb, tmp_cr,
 420                     x_offset, y_offset, qpix_put, chroma_put,
 421                     pixel_shift, chroma_idc);
 422
 423         if (sl->pwt.use_weight == 2) {
 424             int weight0 = sl->pwt.implicit_weight[refn0][refn1][sl->mb_y & 1];
 425             int weight1 = 64 - weight0;
 426             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize,
 427                             height, 5, weight0, weight1, 0);
 428             if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 429                 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,
 430                                   chroma_height, 5, weight0, weight1, 0);
 431                 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,
 432                                   chroma_height, 5, weight0, weight1, 0);
 433             }
 434         } else {
 435             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,
 436                             sl->pwt.luma_log2_weight_denom,
 437                             sl->pwt.luma_weight[refn0][0][0],
 438                             sl->pwt.luma_weight[refn1][1][0],
 439                             sl->pwt.luma_weight[refn0][0][1] +
 440                             sl->pwt.luma_weight[refn1][1][1]);
 441             if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 442                 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,
 443                                   sl->pwt.chroma_log2_weight_denom,
 444                                   sl->pwt.chroma_weight[refn0][0][0][0],
 445                                   sl->pwt.chroma_weight[refn1][1][0][0],
 446                                   sl->pwt.chroma_weight[refn0][0][0][1] +
 447                                   sl->pwt.chroma_weight[refn1][1][0][1]);
 448                 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,
 449                                   sl->pwt.chroma_log2_weight_denom,
 450                                   sl->pwt.chroma_weight[refn0][0][1][0],
 451                                   sl->pwt.chroma_weight[refn1][1][1][0],
 452                                   sl->pwt.chroma_weight[refn0][0][1][1] +
 453                                   sl->pwt.chroma_weight[refn1][1][1][1]);
 454             }
 455         }
 456     } else {
 457         int list     = list1 ? 1 : 0;
 458         int refn     = sl->ref_cache[list][scan8[n]];
 459         H264Ref *ref = &sl->ref_list[list][refn];
 460         mc_dir_part(h, sl, ref, n, square, height, delta, list,
 461                     dest_y, dest_cb, dest_cr, x_offset, y_offset,
 462                     qpix_put, chroma_put, pixel_shift, chroma_idc);
 463
 464         luma_weight_op(dest_y, sl->mb_linesize, height,
 465                        sl->pwt.luma_log2_weight_denom,
 466                        sl->pwt.luma_weight[refn][list][0],
 467                        sl->pwt.luma_weight[refn][list][1]);
 468         if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 469             if (sl->pwt.use_weight_chroma) {
 470                 chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,
 471                                  sl->pwt.chroma_log2_weight_denom,
 472                                  sl->pwt.chroma_weight[refn][list][0][0],
 473                                  sl->pwt.chroma_weight[refn][list][0][1]);
 474                 chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,
 475                                  sl->pwt.chroma_log2_weight_denom,
 476                                  sl->pwt.chroma_weight[refn][list][1][0],
 477                                  sl->pwt.chroma_weight[refn][list][1][1]);
 478             }
 479         }
 480     }
 481 }
 482
 483 static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,
 484                                              int list, int pixel_shift,
 485                                              int chroma_idc)
 486 {
 487     /* fetch pixels for estimated mv 4 macroblocks ahead
 488      * optimized for 64byte cache lines */
 489     const int refn = sl->ref_cache[list][scan8[0]];
 490     if (refn >= 0) {
 491         const int mx  = (sl->mv_cache[list][scan8[0]][0] >> 2) + 16 * sl->mb_x + 8;
 492         const int my  = (sl->mv_cache[list][scan8[0]][1] >> 2) + 16 * sl->mb_y;
 493         uint8_t **src = sl->ref_list[list][refn].data;
 494         int off       =  mx * (1<< pixel_shift) +
 495                         (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +
 496                         (64 << pixel_shift);
 497         h->vdsp.prefetch(src[0] + off, sl->linesize, 4);
 498         if (chroma_idc == 3 /* yuv444 */) {
 499             h->vdsp.prefetch(src[1] + off, sl->linesize, 4);
 500             h->vdsp.prefetch(src[2] + off, sl->linesize, 4);
 501         } else {
 502             off= ((mx>>1)+64) * (1<<pixel_shift) + ((my>>1) + (sl->mb_x&7))*sl->uvlinesize;
 503             h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);
 504         }
 505     }
 506 }
 507
 508 static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,
 509                                             uint8_t *src_y,
 510                                             uint8_t *src_cb, uint8_t *src_cr,
 511                                             int linesize, int uvlinesize,
 512                                             int xchg, int chroma444,
 513                                             int simple, int pixel_shift)
 514 {
 515     int deblock_topleft;
 516     int deblock_top;
 517     int top_idx = 1;
 518     uint8_t *top_border_m1;
 519     uint8_t *top_border;
 520
 521     if (!simple && FRAME_MBAFF(h)) {
 522         if (sl->mb_y & 1) {
 523             if (!MB_MBAFF(sl))
 524                 return;
 525         } else {
 526             top_idx = MB_MBAFF(sl) ? 0 : 1;
 527         }
 528     }
 529
 530     if (sl->deblocking_filter == 2) {
 531         deblock_topleft = h->slice_table[sl->mb_xy - 1 - h->mb_stride] == sl->slice_num;
 532         deblock_top     = sl->top_type;
 533     } else {
 534         deblock_topleft = (sl->mb_x > 0);
 535         deblock_top     = (sl->mb_y > !!MB_FIELD(sl));
 536     }
 537
 538     src_y  -= linesize   + 1 + pixel_shift;
 539     src_cb -= uvlinesize + 1 + pixel_shift;
 540     src_cr -= uvlinesize + 1 + pixel_shift;
 541
 542     top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];
 543     top_border    = sl->top_borders[top_idx][sl->mb_x];
 544
 545 #define XCHG(a, b, xchg)                        \
 546     if (pixel_shift) {                          \
 547         if (xchg) {                             \
 548             AV_SWAP64(b + 0, a + 0);            \
 549             AV_SWAP64(b + 8, a + 8);            \
 550         } else {                                \
 551             AV_COPY128(b, a);                   \
 552         }                                       \
 553     } else if (xchg)                            \
 554         AV_SWAP64(b, a);                        \
 555     else                                        \
 556         AV_COPY64(b, a);
 557
 558     if (deblock_top) {
 559         if (deblock_topleft) {
 560             XCHG(top_border_m1 + (8 << pixel_shift),
 561                  src_y - (7 << pixel_shift), 1);
 562         }
 563         XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);
 564         XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);
 565         if (sl->mb_x + 1 < h->mb_width) {
 566             XCHG(sl->top_borders[top_idx][sl->mb_x + 1],
 567                  src_y + (17 << pixel_shift), 1);
 568         }
 569         if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {
 570             if (chroma444) {
 571                 if (deblock_topleft) {
 572                     XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);
 573                     XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);
 574                 }
 575                 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);
 576                 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);
 577                 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);
 578                 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);
 579                 if (sl->mb_x + 1 < h->mb_width) {
 580                     XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);
 581                     XCHG(sl->top_borders[top_idx][sl->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);
 582                 }
 583             } else {
 584                 if (deblock_topleft) {
 585                     XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);
 586                     XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);
 587                 }
 588                 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);
 589                 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);
 590             }
 591         }
 592     }
 593 }
 594
 595 static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,
 596                                         int index)
 597 {
 598     if (high_bit_depth) {
 599         return AV_RN32A(((int32_t *)mb) + index);
 600     } else
 601         return AV_RN16A(mb + index);
 602 }
 603
 604 static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,
 605                                          int index, int value)
 606 {
 607     if (high_bit_depth) {
 608         AV_WN32A(((int32_t *)mb) + index, value);
 609     } else
 610         AV_WN16A(mb + index, value);
 611 }
 612
 613 static av_always_inline void hl_decode_mb_predict_luma(const H264Context *h,
 614                                                        H264SliceContext *sl,
 615                                                        int mb_type, int simple,
 616                                                        int transform_bypass,
 617                                                        int pixel_shift,
 618                                                        const int *block_offset,
 619                                                        int linesize,
 620                                                        uint8_t *dest_y, int p)
 621 {
 622     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
 623     void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);
 624     int i;
 625     int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];
 626     block_offset += 16 * p;
 627     if (IS_INTRA4x4(mb_type)) {
 628         if (IS_8x8DCT(mb_type)) {
 629             if (transform_bypass) {
 630                 idct_dc_add =
 631                 idct_add    = h->h264dsp.h264_add_pixels8_clear;
 632             } else {
 633                 idct_dc_add = h->h264dsp.h264_idct8_dc_add;
 634                 idct_add    = h->h264dsp.h264_idct8_add;
 635             }
 636             for (i = 0; i < 16; i += 4) {
 637                 uint8_t *const ptr = dest_y + block_offset[i];
 638                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];
 639                 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
 640                     if (h->x264_build < 151U) {
 641                         h->hpc.pred8x8l_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 642                     } else
 643                         h->hpc.pred8x8l_filter_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift),
 644                                                         (sl-> topleft_samples_available << i) & 0x8000,
 645                                                         (sl->topright_samples_available << i) & 0x4000, linesize);
 646                 } else {
 647                     const int nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
 648                     h->hpc.pred8x8l[dir](ptr, (sl->topleft_samples_available << i) & 0x8000,
 649                                          (sl->topright_samples_available << i) & 0x4000, linesize);
 650                     if (nnz) {
 651                         if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 652                             idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 653                         else
 654                             idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 655                     }
 656                 }
 657             }
 658         } else {
 659             if (transform_bypass) {
 660                 idct_dc_add  =
 661                 idct_add     = h->h264dsp.h264_add_pixels4_clear;
 662             } else {
 663                 idct_dc_add = h->h264dsp.h264_idct_dc_add;
 664                 idct_add    = h->h264dsp.h264_idct_add;
 665             }
 666             for (i = 0; i < 16; i++) {
 667                 uint8_t *const ptr = dest_y + block_offset[i];
 668                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];
 669
 670                 if (transform_bypass && h->ps.sps->profile_idc == 244 && dir <= 1) {
 671                     h->hpc.pred4x4_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 672                 } else {
 673                     uint8_t *topright;
 674                     int nnz, tr;
 675                     uint64_t tr_high;
 676                     if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {
 677                         const int topright_avail = (sl->topright_samples_available << i) & 0x8000;
 678                         av_assert2(sl->mb_y || linesize <= block_offset[i]);
 679                         if (!topright_avail) {
 680                             if (pixel_shift) {
 681                                 tr_high  = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;
 682                                 topright = (uint8_t *)&tr_high;
 683                             } else {
 684                                 tr       = ptr[3 - linesize] * 0x01010101u;
 685                                 topright = (uint8_t *)&tr;
 686                             }
 687                         } else
 688                             topright = ptr + (4 << pixel_shift) - linesize;
 689                     } else
 690                         topright = NULL;
 691
 692                     h->hpc.pred4x4[dir](ptr, topright, linesize);
 693                     nnz = sl->non_zero_count_cache[scan8[i + p * 16]];
 694                     if (nnz) {
 695                         if (nnz == 1 && dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 696                             idct_dc_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 697                         else
 698                             idct_add(ptr, sl->mb + (i * 16 + p * 256 << pixel_shift), linesize);
 699                     }
 700                 }
 701             }
 702         }
 703     } else {
 704         h->hpc.pred16x16[sl->intra16x16_pred_mode](dest_y, linesize);
 705         if (sl->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {
 706             if (!transform_bypass)
 707                 h->h264dsp.h264_luma_dc_dequant_idct(sl->mb + (p * 256 << pixel_shift),
 708                                                      sl->mb_luma_dc[p],
 709                                                      h->ps.pps->dequant4_coeff[p][qscale][0]);
 710             else {
 711                 static const uint8_t dc_mapping[16] = {
 712                      0 * 16,  1 * 16,  4 * 16,  5 * 16,
 713                      2 * 16,  3 * 16,  6 * 16,  7 * 16,
 714                      8 * 16,  9 * 16, 12 * 16, 13 * 16,
 715                     10 * 16, 11 * 16, 14 * 16, 15 * 16
 716                 };
 717                 for (i = 0; i < 16; i++)
 718                     dctcoef_set(sl->mb + (p * 256 << pixel_shift),
 719                                 pixel_shift, dc_mapping[i],
 720                                 dctcoef_get(sl->mb_luma_dc[p],
 721                                             pixel_shift, i));
 722             }
 723         }
 724     }
 725 }
 726
 727 static av_always_inline void hl_decode_mb_idct_luma(const H264Context *h, H264SliceContext *sl,
 728                                                     int mb_type, int simple,
 729                                                     int transform_bypass,
 730                                                     int pixel_shift,
 731                                                     const int *block_offset,
 732                                                     int linesize,
 733                                                     uint8_t *dest_y, int p)
 734 {
 735     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);
 736     int i;
 737     block_offset += 16 * p;
 738     if (!IS_INTRA4x4(mb_type)) {
 739         if (IS_INTRA16x16(mb_type)) {
 740             if (transform_bypass) {
 741                 if (h->ps.sps->profile_idc == 244 &&
 742                     (sl->intra16x16_pred_mode == VERT_PRED8x8 ||
 743                      sl->intra16x16_pred_mode == HOR_PRED8x8)) {
 744                     h->hpc.pred16x16_add[sl->intra16x16_pred_mode](dest_y, block_offset,
 745                                                                    sl->mb + (p * 256 << pixel_shift),
 746                                                                    linesize);
 747                 } else {
 748                     for (i = 0; i < 16; i++)
 749                         if (sl->non_zero_count_cache[scan8[i + p * 16]] ||
 750                             dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))
 751                             h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],
 752                                                               sl->mb + (i * 16 + p * 256 << pixel_shift),
 753                                                               linesize);
 754                 }
 755             } else {
 756                 h->h264dsp.h264_idct_add16intra(dest_y, block_offset,
 757                                                 sl->mb + (p * 256 << pixel_shift),
 758                                                 linesize,
 759                                                 sl->non_zero_count_cache + p * 5 * 8);
 760             }
 761         } else if (sl->cbp & 15) {
 762             if (transform_bypass) {
 763                 const int di = IS_8x8DCT(mb_type) ? 4 : 1;
 764                 idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear
 765                     : h->h264dsp.h264_add_pixels4_clear;
 766                 for (i = 0; i < 16; i += di)
 767                     if (sl->non_zero_count_cache[scan8[i + p * 16]])
 768                         idct_add(dest_y + block_offset[i],
 769                                  sl->mb + (i * 16 + p * 256 << pixel_shift),
 770                                  linesize);
 771             } else {
 772                 if (IS_8x8DCT(mb_type))
 773                     h->h264dsp.h264_idct8_add4(dest_y, block_offset,
 774                                                sl->mb + (p * 256 << pixel_shift),
 775                                                linesize,
 776                                                sl->non_zero_count_cache + p * 5 * 8);
 777                 else
 778                     h->h264dsp.h264_idct_add16(dest_y, block_offset,
 779                                                sl->mb + (p * 256 << pixel_shift),
 780                                                linesize,
 781                                                sl->non_zero_count_cache + p * 5 * 8);
 782             }
 783         }
 784     }
 785 }
 786
 787 #define BITS   8
 788 #define SIMPLE 1
 789 #include "h264_mb_template.c"
 790
 791 #undef  BITS
 792 #define BITS   16
 793 #include "h264_mb_template.c"
 794
 795 #undef  SIMPLE
 796 #define SIMPLE 0
 797 #include "h264_mb_template.c"
 798
 799 void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)
 800 {
 801     const int mb_xy   = sl->mb_xy;
 802     const int mb_type = h->cur_pic.mb_type[mb_xy];
 803     int is_complex    = CONFIG_SMALL || sl->is_complex ||
 804                         IS_INTRA_PCM(mb_type) || sl->qscale == 0;
 805
 806     if (CHROMA444(h)) {
 807         if (is_complex || h->pixel_shift)
 808             hl_decode_mb_444_complex(h, sl);
 809         else
 810             hl_decode_mb_444_simple_8(h, sl);
 811     } else if (is_complex) {
 812         hl_decode_mb_complex(h, sl);
 813     } else if (h->pixel_shift) {
 814         hl_decode_mb_simple_16(h, sl);
 815     } else
 816         hl_decode_mb_simple_8(h, sl);
 817 }