falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
39979 Commits
32 Branches
428MB
Tree: 593886b5dd
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from '593886b5dd'
${ noResults }
FFmpeg/libavcodec/h264_mb.c

822 lines
37KB
Raw Blame History 

  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 / MPEG4 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 "svq3.h"

  36. #include "thread.h"

  37. 

  38. static inline int get_lowest_part_list_y(H264Context *h, H264Picture *pic, int n,

  39.                                          int height, int y_offset, int list)

  40. {

  41.     int raw_my             = h->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(H264Context *h, int refs[2][48], int n,

  52.                                      int height, int y_offset, int list0,

  53.                                      int list1, int *nrefs)

  54. {

  55.     int my;

  56. 

  57.     y_offset += 16 * (h->mb_y >> MB_FIELD(h));

  58. 

  59.     if (list0) {

  60.         int ref_n = h->ref_cache[0][scan8[n]];

  61.         H264Picture *ref = &h->ref_list[0][ref_n];

  62. 

  63.         // Error resilience puts the current picture in the ref list.

  64.         // Don't try to wait on these as it will cause a deadlock.

  65.         // Fields can wait on each other, though.

  66.         if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||

  67.             (ref->reference & 3) != h->picture_structure) {

  68.             my = get_lowest_part_list_y(h, ref, n, height, y_offset, 0);

  69.             if (refs[0][ref_n] < 0)

  70.                 nrefs[0] += 1;

  71.             refs[0][ref_n] = FFMAX(refs[0][ref_n], my);

  72.         }

  73.     }

  74. 

  75.     if (list1) {

  76.         int ref_n    = h->ref_cache[1][scan8[n]];

  77.         H264Picture *ref = &h->ref_list[1][ref_n];

  78. 

  79.         if (ref->tf.progress->data != h->cur_pic.tf.progress->data ||

  80.             (ref->reference & 3) != h->picture_structure) {

  81.             my = get_lowest_part_list_y(h, ref, n, height, y_offset, 1);

  82.             if (refs[1][ref_n] < 0)

  83.                 nrefs[1] += 1;

  84.             refs[1][ref_n] = FFMAX(refs[1][ref_n], my);

  85.         }

  86.     }

  87. }

  88. 

  89. /**

  90.  * Wait until all reference frames are available for MC operations.

  91.  *

  92.  * @param h the H264 context

  93.  */

  94. static void await_references(H264Context *h)

  95. {

  96.     const int mb_xy   = h->mb_xy;

  97.     const int mb_type = h->cur_pic.mb_type[mb_xy];

  98.     int refs[2][48];

  99.     int nrefs[2] = { 0 };

  100.     int ref, list;

  101. 

  102.     memset(refs, -1, sizeof(refs));

  103. 

  104.     if (IS_16X16(mb_type)) {

  105.         get_lowest_part_y(h, refs, 0, 16, 0,

  106.                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

  107.     } else if (IS_16X8(mb_type)) {

  108.         get_lowest_part_y(h, refs, 0, 8, 0,

  109.                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

  110.         get_lowest_part_y(h, refs, 8, 8, 8,

  111.                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);

  112.     } else if (IS_8X16(mb_type)) {

  113.         get_lowest_part_y(h, refs, 0, 16, 0,

  114.                           IS_DIR(mb_type, 0, 0), IS_DIR(mb_type, 0, 1), nrefs);

  115.         get_lowest_part_y(h, refs, 4, 16, 0,

  116.                           IS_DIR(mb_type, 1, 0), IS_DIR(mb_type, 1, 1), nrefs);

  117.     } else {

  118.         int i;

  119. 

  120.         assert(IS_8X8(mb_type));

  121. 

  122.         for (i = 0; i < 4; i++) {

  123.             const int sub_mb_type = h->sub_mb_type[i];

  124.             const int n           = 4 * i;

  125.             int y_offset          = (i & 2) << 2;

  126. 

  127.             if (IS_SUB_8X8(sub_mb_type)) {

  128.                 get_lowest_part_y(h, refs, n, 8, y_offset,

  129.                                   IS_DIR(sub_mb_type, 0, 0),

  130.                                   IS_DIR(sub_mb_type, 0, 1),

  131.                                   nrefs);

  132.             } else if (IS_SUB_8X4(sub_mb_type)) {

  133.                 get_lowest_part_y(h, refs, n, 4, y_offset,

  134.                                   IS_DIR(sub_mb_type, 0, 0),

  135.                                   IS_DIR(sub_mb_type, 0, 1),

  136.                                   nrefs);

  137.                 get_lowest_part_y(h, refs, n + 2, 4, y_offset + 4,

  138.                                   IS_DIR(sub_mb_type, 0, 0),

  139.                                   IS_DIR(sub_mb_type, 0, 1),

  140.                                   nrefs);

  141.             } else if (IS_SUB_4X8(sub_mb_type)) {

  142.                 get_lowest_part_y(h, refs, n, 8, y_offset,

  143.                                   IS_DIR(sub_mb_type, 0, 0),

  144.                                   IS_DIR(sub_mb_type, 0, 1),

  145.                                   nrefs);

  146.                 get_lowest_part_y(h, refs, n + 1, 8, y_offset,

  147.                                   IS_DIR(sub_mb_type, 0, 0),

  148.                                   IS_DIR(sub_mb_type, 0, 1),

  149.                                   nrefs);

  150.             } else {

  151.                 int j;

  152.                 assert(IS_SUB_4X4(sub_mb_type));

  153.                 for (j = 0; j < 4; j++) {

  154.                     int sub_y_offset = y_offset + 2 * (j & 2);

  155.                     get_lowest_part_y(h, refs, n + j, 4, sub_y_offset,

  156.                                       IS_DIR(sub_mb_type, 0, 0),

  157.                                       IS_DIR(sub_mb_type, 0, 1),

  158.                                       nrefs);

  159.                 }

  160.             }

  161.         }

  162.     }

  163. 

  164.     for (list = h->list_count - 1; list >= 0; list--)

  165.         for (ref = 0; ref < 48 && nrefs[list]; ref++) {

  166.             int row = refs[list][ref];

  167.             if (row >= 0) {

  168.                 H264Picture *ref_pic  = &h->ref_list[list][ref];

  169.                 int ref_field         = ref_pic->reference - 1;

  170.                 int ref_field_picture = ref_pic->field_picture;

  171.                 int pic_height        = 16 * h->mb_height >> ref_field_picture;

  172. 

  173.                 row <<= MB_MBAFF(h);

  174.                 nrefs[list]--;

  175. 

  176.                 if (!FIELD_PICTURE(h) && ref_field_picture) { // frame referencing two fields

  177.                     ff_thread_await_progress(&ref_pic->tf,

  178.                                              FFMIN((row >> 1) - !(row & 1),

  179.                                                    pic_height - 1),

  180.                                              1);

  181.                     ff_thread_await_progress(&ref_pic->tf,

  182.                                              FFMIN((row >> 1), pic_height - 1),

  183.                                              0);

  184.                 } else if (FIELD_PICTURE(h) && !ref_field_picture) { // field referencing one field of a frame

  185.                     ff_thread_await_progress(&ref_pic->tf,

  186.                                              FFMIN(row * 2 + ref_field,

  187.                                                    pic_height - 1),

  188.                                              0);

  189.                 } else if (FIELD_PICTURE(h)) {

  190.                     ff_thread_await_progress(&ref_pic->tf,

  191.                                              FFMIN(row, pic_height - 1),

  192.                                              ref_field);

  193.                 } else {

  194.                     ff_thread_await_progress(&ref_pic->tf,

  195.                                              FFMIN(row, pic_height - 1),

  196.                                              0);

  197.                 }

  198.             }

  199.         }

  200. }

  201. 

  202. static av_always_inline void mc_dir_part(H264Context *h, H264Picture *pic,

  203.                                          int n, int square, int height,

  204.                                          int delta, int list,

  205.                                          uint8_t *dest_y, uint8_t *dest_cb,

  206.                                          uint8_t *dest_cr,

  207.                                          int src_x_offset, int src_y_offset,

  208.                                          qpel_mc_func *qpix_op,

  209.                                          h264_chroma_mc_func chroma_op,

  210.                                          int pixel_shift, int chroma_idc)

  211. {

  212.     const int mx      = h->mv_cache[list][scan8[n]][0] + src_x_offset * 8;

  213.     int my            = h->mv_cache[list][scan8[n]][1] + src_y_offset * 8;

  214.     const int luma_xy = (mx & 3) + ((my & 3) << 2);

  215.     ptrdiff_t offset  = ((mx >> 2) << pixel_shift) + (my >> 2) * h->mb_linesize;

  216.     uint8_t *src_y    = pic->f.data[0] + offset;

  217.     uint8_t *src_cb, *src_cr;

  218.     int extra_width  = 0;

  219.     int extra_height = 0;

  220.     int emu = 0;

  221.     const int full_mx    = mx >> 2;

  222.     const int full_my    = my >> 2;

  223.     const int pic_width  = 16 * h->mb_width;

  224.     const int pic_height = 16 * h->mb_height >> MB_FIELD(h);

  225.     int ysh;

  226. 

  227.     if (mx & 7)

  228.         extra_width -= 3;

  229.     if (my & 7)

  230.         extra_height -= 3;

  231. 

  232.     if (full_mx                <          0 - extra_width  ||

  233.         full_my                <          0 - extra_height ||

  234.         full_mx + 16 /*FIXME*/ > pic_width  + extra_width  ||

  235.         full_my + 16 /*FIXME*/ > pic_height + extra_height) {

  236.         h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

  237.                                  src_y - (2 << pixel_shift) - 2 * h->mb_linesize,

  238.                                  h->mb_linesize, h->mb_linesize,

  239.                                  16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,

  240.                                  full_my - 2, pic_width, pic_height);

  241.         src_y = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

  242.         emu   = 1;

  243.     }

  244. 

  245.     qpix_op[luma_xy](dest_y, src_y, h->mb_linesize); // FIXME try variable height perhaps?

  246.     if (!square)

  247.         qpix_op[luma_xy](dest_y + delta, src_y + delta, h->mb_linesize);

  248. 

  249.     if (CONFIG_GRAY && h->flags & CODEC_FLAG_GRAY)

  250.         return;

  251. 

  252.     if (chroma_idc == 3 /* yuv444 */) {

  253.         src_cb = pic->f.data[1] + offset;

  254.         if (emu) {

  255.             h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

  256.                                      src_cb - (2 << pixel_shift) - 2 * h->mb_linesize,

  257.                                      h->mb_linesize, h->mb_linesize,

  258.                                      16 + 5, 16 + 5 /*FIXME*/,

  259.                                      full_mx - 2, full_my - 2,

  260.                                      pic_width, pic_height);

  261.             src_cb = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

  262.         }

  263.         qpix_op[luma_xy](dest_cb, src_cb, h->mb_linesize); // FIXME try variable height perhaps?

  264.         if (!square)

  265.             qpix_op[luma_xy](dest_cb + delta, src_cb + delta, h->mb_linesize);

  266. 

  267.         src_cr = pic->f.data[2] + offset;

  268.         if (emu) {

  269.             h->vdsp.emulated_edge_mc(h->edge_emu_buffer,

  270.                                      src_cr - (2 << pixel_shift) - 2 * h->mb_linesize,

  271.                                      h->mb_linesize, h->mb_linesize,

  272.                                      16 + 5, 16 + 5 /*FIXME*/,

  273.                                      full_mx - 2, full_my - 2,

  274.                                      pic_width, pic_height);

  275.             src_cr = h->edge_emu_buffer + (2 << pixel_shift) + 2 * h->mb_linesize;

  276.         }

  277.         qpix_op[luma_xy](dest_cr, src_cr, h->mb_linesize); // FIXME try variable height perhaps?

  278.         if (!square)

  279.             qpix_op[luma_xy](dest_cr + delta, src_cr + delta, h->mb_linesize);

  280.         return;

  281.     }

  282. 

  283.     ysh = 3 - (chroma_idc == 2 /* yuv422 */);

  284.     if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(h)) {

  285.         // chroma offset when predicting from a field of opposite parity

  286.         my  += 2 * ((h->mb_y & 1) - (pic->reference - 1));

  287.         emu |= (my >> 3) < 0 || (my >> 3) + 8 >= (pic_height >> 1);

  288.     }

  289. 

  290.     src_cb = pic->f.data[1] + ((mx >> 3) << pixel_shift) +

  291.              (my >> ysh) * h->mb_uvlinesize;

  292.     src_cr = pic->f.data[2] + ((mx >> 3) << pixel_shift) +

  293.              (my >> ysh) * h->mb_uvlinesize;

  294. 

  295.     if (emu) {

  296.         h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cb,

  297.                                  h->mb_uvlinesize, h->mb_uvlinesize,

  298.                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

  299.                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));

  300.         src_cb = h->edge_emu_buffer;

  301.     }

  302.     chroma_op(dest_cb, src_cb, h->mb_uvlinesize,

  303.               height >> (chroma_idc == 1 /* yuv420 */),

  304.               mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);

  305. 

  306.     if (emu) {

  307.         h->vdsp.emulated_edge_mc(h->edge_emu_buffer, src_cr,

  308.                                  h->mb_uvlinesize, h->mb_uvlinesize,

  309.                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

  310.                                  pic_width >> 1, pic_height >> (chroma_idc == 1 /* yuv420 */));

  311.         src_cr = h->edge_emu_buffer;

  312.     }

  313.     chroma_op(dest_cr, src_cr, h->mb_uvlinesize, height >> (chroma_idc == 1 /* yuv420 */),

  314.               mx & 7, (my << (chroma_idc == 2 /* yuv422 */)) & 7);

  315. }

  316. 

  317. static av_always_inline void mc_part_std(H264Context *h, int n, int square,

  318.                                          int height, int delta,

  319.                                          uint8_t *dest_y, uint8_t *dest_cb,

  320.                                          uint8_t *dest_cr,

  321.                                          int x_offset, int y_offset,

  322.                                          qpel_mc_func *qpix_put,

  323.                                          h264_chroma_mc_func chroma_put,

  324.                                          qpel_mc_func *qpix_avg,

  325.                                          h264_chroma_mc_func chroma_avg,

  326.                                          int list0, int list1,

  327.                                          int pixel_shift, int chroma_idc)

  328. {

  329.     qpel_mc_func *qpix_op         = qpix_put;

  330.     h264_chroma_mc_func chroma_op = chroma_put;

  331. 

  332.     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  333.     if (chroma_idc == 3 /* yuv444 */) {

  334.         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  335.         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  336.     } else if (chroma_idc == 2 /* yuv422 */) {

  337.         dest_cb += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

  338.         dest_cr += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

  339.     } else { /* yuv420 */

  340.         dest_cb += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

  341.         dest_cr += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

  342.     }

  343.     x_offset += 8 * h->mb_x;

  344.     y_offset += 8 * (h->mb_y >> MB_FIELD(h));

  345. 

  346.     if (list0) {

  347.         H264Picture *ref = &h->ref_list[0][h->ref_cache[0][scan8[n]]];

  348.         mc_dir_part(h, ref, n, square, height, delta, 0,

  349.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  350.                     qpix_op, chroma_op, pixel_shift, chroma_idc);

  351. 

  352.         qpix_op   = qpix_avg;

  353.         chroma_op = chroma_avg;

  354.     }

  355. 

  356.     if (list1) {

  357.         H264Picture *ref = &h->ref_list[1][h->ref_cache[1][scan8[n]]];

  358.         mc_dir_part(h, ref, n, square, height, delta, 1,

  359.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  360.                     qpix_op, chroma_op, pixel_shift, chroma_idc);

  361.     }

  362. }

  363. 

  364. static av_always_inline void mc_part_weighted(H264Context *h, int n, int square,

  365.                                               int height, int delta,

  366.                                               uint8_t *dest_y, uint8_t *dest_cb,

  367.                                               uint8_t *dest_cr,

  368.                                               int x_offset, int y_offset,

  369.                                               qpel_mc_func *qpix_put,

  370.                                               h264_chroma_mc_func chroma_put,

  371.                                               h264_weight_func luma_weight_op,

  372.                                               h264_weight_func chroma_weight_op,

  373.                                               h264_biweight_func luma_weight_avg,

  374.                                               h264_biweight_func chroma_weight_avg,

  375.                                               int list0, int list1,

  376.                                               int pixel_shift, int chroma_idc)

  377. {

  378.     int chroma_height;

  379. 

  380.     dest_y += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  381.     if (chroma_idc == 3 /* yuv444 */) {

  382.         chroma_height     = height;

  383.         chroma_weight_avg = luma_weight_avg;

  384.         chroma_weight_op  = luma_weight_op;

  385.         dest_cb += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  386.         dest_cr += (2 * x_offset << pixel_shift) + 2 * y_offset * h->mb_linesize;

  387.     } else if (chroma_idc == 2 /* yuv422 */) {

  388.         chroma_height = height;

  389.         dest_cb      += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

  390.         dest_cr      += (x_offset << pixel_shift) + 2 * y_offset * h->mb_uvlinesize;

  391.     } else { /* yuv420 */

  392.         chroma_height = height >> 1;

  393.         dest_cb      += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

  394.         dest_cr      += (x_offset << pixel_shift) + y_offset * h->mb_uvlinesize;

  395.     }

  396.     x_offset += 8 * h->mb_x;

  397.     y_offset += 8 * (h->mb_y >> MB_FIELD(h));

  398. 

  399.     if (list0 && list1) {

  400.         /* don't optimize for luma-only case, since B-frames usually

  401.          * use implicit weights => chroma too. */

  402.         uint8_t *tmp_cb = h->bipred_scratchpad;

  403.         uint8_t *tmp_cr = h->bipred_scratchpad + (16 << pixel_shift);

  404.         uint8_t *tmp_y  = h->bipred_scratchpad + 16 * h->mb_uvlinesize;

  405.         int refn0       = h->ref_cache[0][scan8[n]];

  406.         int refn1       = h->ref_cache[1][scan8[n]];

  407. 

  408.         mc_dir_part(h, &h->ref_list[0][refn0], n, square, height, delta, 0,

  409.                     dest_y, dest_cb, dest_cr,

  410.                     x_offset, y_offset, qpix_put, chroma_put,

  411.                     pixel_shift, chroma_idc);

  412.         mc_dir_part(h, &h->ref_list[1][refn1], n, square, height, delta, 1,

  413.                     tmp_y, tmp_cb, tmp_cr,

  414.                     x_offset, y_offset, qpix_put, chroma_put,

  415.                     pixel_shift, chroma_idc);

  416. 

  417.         if (h->use_weight == 2) {

  418.             int weight0 = h->implicit_weight[refn0][refn1][h->mb_y & 1];

  419.             int weight1 = 64 - weight0;

  420.             luma_weight_avg(dest_y, tmp_y, h->mb_linesize,

  421.                             height, 5, weight0, weight1, 0);

  422.             chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize,

  423.                               chroma_height, 5, weight0, weight1, 0);

  424.             chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize,

  425.                               chroma_height, 5, weight0, weight1, 0);

  426.         } else {

  427.             luma_weight_avg(dest_y, tmp_y, h->mb_linesize, height,

  428.                             h->luma_log2_weight_denom,

  429.                             h->luma_weight[refn0][0][0],

  430.                             h->luma_weight[refn1][1][0],

  431.                             h->luma_weight[refn0][0][1] +

  432.                             h->luma_weight[refn1][1][1]);

  433.             chroma_weight_avg(dest_cb, tmp_cb, h->mb_uvlinesize, chroma_height,

  434.                               h->chroma_log2_weight_denom,

  435.                               h->chroma_weight[refn0][0][0][0],

  436.                               h->chroma_weight[refn1][1][0][0],

  437.                               h->chroma_weight[refn0][0][0][1] +

  438.                               h->chroma_weight[refn1][1][0][1]);

  439.             chroma_weight_avg(dest_cr, tmp_cr, h->mb_uvlinesize, chroma_height,

  440.                               h->chroma_log2_weight_denom,

  441.                               h->chroma_weight[refn0][0][1][0],

  442.                               h->chroma_weight[refn1][1][1][0],

  443.                               h->chroma_weight[refn0][0][1][1] +

  444.                               h->chroma_weight[refn1][1][1][1]);

  445.         }

  446.     } else {

  447.         int list     = list1 ? 1 : 0;

  448.         int refn     = h->ref_cache[list][scan8[n]];

  449.         H264Picture *ref = &h->ref_list[list][refn];

  450.         mc_dir_part(h, ref, n, square, height, delta, list,

  451.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  452.                     qpix_put, chroma_put, pixel_shift, chroma_idc);

  453. 

  454.         luma_weight_op(dest_y, h->mb_linesize, height,

  455.                        h->luma_log2_weight_denom,

  456.                        h->luma_weight[refn][list][0],

  457.                        h->luma_weight[refn][list][1]);

  458.         if (h->use_weight_chroma) {

  459.             chroma_weight_op(dest_cb, h->mb_uvlinesize, chroma_height,

  460.                              h->chroma_log2_weight_denom,

  461.                              h->chroma_weight[refn][list][0][0],

  462.                              h->chroma_weight[refn][list][0][1]);

  463.             chroma_weight_op(dest_cr, h->mb_uvlinesize, chroma_height,

  464.                              h->chroma_log2_weight_denom,

  465.                              h->chroma_weight[refn][list][1][0],

  466.                              h->chroma_weight[refn][list][1][1]);

  467.         }

  468.     }

  469. }

  470. 

  471. static av_always_inline void prefetch_motion(H264Context *h, int list,

  472.                                              int pixel_shift, int chroma_idc)

  473. {

  474.     /* fetch pixels for estimated mv 4 macroblocks ahead

  475.      * optimized for 64byte cache lines */

  476.     const int refn = h->ref_cache[list][scan8[0]];

  477.     if (refn >= 0) {

  478.         const int mx  = (h->mv_cache[list][scan8[0]][0] >> 2) + 16 * h->mb_x + 8;

  479.         const int my  = (h->mv_cache[list][scan8[0]][1] >> 2) + 16 * h->mb_y;

  480.         uint8_t **src = h->ref_list[list][refn].f.data;

  481.         int off       = (mx << pixel_shift) +

  482.                         (my + (h->mb_x & 3) * 4) * h->mb_linesize +

  483.                         (64 << pixel_shift);

  484.         h->vdsp.prefetch(src[0] + off, h->linesize, 4);

  485.         if (chroma_idc == 3 /* yuv444 */) {

  486.             h->vdsp.prefetch(src[1] + off, h->linesize, 4);

  487.             h->vdsp.prefetch(src[2] + off, h->linesize, 4);

  488.         } else {

  489.             off = ((mx >> 1) << pixel_shift) +

  490.                   ((my >> 1) + (h->mb_x & 7)) * h->uvlinesize +

  491.                   (64 << pixel_shift);

  492.             h->vdsp.prefetch(src[1] + off, src[2] - src[1], 2);

  493.         }

  494.     }

  495. }

  496. 

  497. static av_always_inline void xchg_mb_border(H264Context *h, uint8_t *src_y,

  498.                                             uint8_t *src_cb, uint8_t *src_cr,

  499.                                             int linesize, int uvlinesize,

  500.                                             int xchg, int chroma444,

  501.                                             int simple, int pixel_shift)

  502. {

  503.     int deblock_topleft;

  504.     int deblock_top;

  505.     int top_idx = 1;

  506.     uint8_t *top_border_m1;

  507.     uint8_t *top_border;

  508. 

  509.     if (!simple && FRAME_MBAFF(h)) {

  510.         if (h->mb_y & 1) {

  511.             if (!MB_MBAFF(h))

  512.                 return;

  513.         } else {

  514.             top_idx = MB_MBAFF(h) ? 0 : 1;

  515.         }

  516.     }

  517. 

  518.     if (h->deblocking_filter == 2) {

  519.         deblock_topleft = h->slice_table[h->mb_xy - 1 - h->mb_stride] == h->slice_num;

  520.         deblock_top     = h->top_type;

  521.     } else {

  522.         deblock_topleft = (h->mb_x > 0);

  523.         deblock_top     = (h->mb_y > !!MB_FIELD(h));

  524.     }

  525. 

  526.     src_y  -= linesize   + 1 + pixel_shift;

  527.     src_cb -= uvlinesize + 1 + pixel_shift;

  528.     src_cr -= uvlinesize + 1 + pixel_shift;

  529. 

  530.     top_border_m1 = h->top_borders[top_idx][h->mb_x - 1];

  531.     top_border    = h->top_borders[top_idx][h->mb_x];

  532. 

  533. #define XCHG(a, b, xchg)                        \

  534.     if (pixel_shift) {                          \

  535.         if (xchg) {                             \

  536.             AV_SWAP64(b + 0, a + 0);            \

  537.             AV_SWAP64(b + 8, a + 8);            \

  538.         } else {                                \

  539.             AV_COPY128(b, a);                   \

  540.         }                                       \

  541.     } else if (xchg)                            \

  542.         AV_SWAP64(b, a);                        \

  543.     else                                        \

  544.         AV_COPY64(b, a);

  545. 

  546.     if (deblock_top) {

  547.         if (deblock_topleft) {

  548.             XCHG(top_border_m1 + (8 << pixel_shift),

  549.                  src_y - (7 << pixel_shift), 1);

  550.         }

  551.         XCHG(top_border + (0 << pixel_shift), src_y + (1 << pixel_shift), xchg);

  552.         XCHG(top_border + (8 << pixel_shift), src_y + (9 << pixel_shift), 1);

  553.         if (h->mb_x + 1 < h->mb_width) {

  554.             XCHG(h->top_borders[top_idx][h->mb_x + 1],

  555.                  src_y + (17 << pixel_shift), 1);

  556.         }

  557.     }

  558.     if (simple || !CONFIG_GRAY || !(h->flags & CODEC_FLAG_GRAY)) {

  559.         if (chroma444) {

  560.             if (deblock_top) {

  561.                 if (deblock_topleft) {

  562.                     XCHG(top_border_m1 + (24 << pixel_shift), src_cb - (7 << pixel_shift), 1);

  563.                     XCHG(top_border_m1 + (40 << pixel_shift), src_cr - (7 << pixel_shift), 1);

  564.                 }

  565.                 XCHG(top_border + (16 << pixel_shift), src_cb + (1 << pixel_shift), xchg);

  566.                 XCHG(top_border + (24 << pixel_shift), src_cb + (9 << pixel_shift), 1);

  567.                 XCHG(top_border + (32 << pixel_shift), src_cr + (1 << pixel_shift), xchg);

  568.                 XCHG(top_border + (40 << pixel_shift), src_cr + (9 << pixel_shift), 1);

  569.                 if (h->mb_x + 1 < h->mb_width) {

  570.                     XCHG(h->top_borders[top_idx][h->mb_x + 1] + (16 << pixel_shift), src_cb + (17 << pixel_shift), 1);

  571.                     XCHG(h->top_borders[top_idx][h->mb_x + 1] + (32 << pixel_shift), src_cr + (17 << pixel_shift), 1);

  572.                 }

  573.             }

  574.         } else {

  575.             if (deblock_top) {

  576.                 if (deblock_topleft) {

  577.                     XCHG(top_border_m1 + (16 << pixel_shift), src_cb - (7 << pixel_shift), 1);

  578.                     XCHG(top_border_m1 + (24 << pixel_shift), src_cr - (7 << pixel_shift), 1);

  579.                 }

  580.                 XCHG(top_border + (16 << pixel_shift), src_cb + 1 + pixel_shift, 1);

  581.                 XCHG(top_border + (24 << pixel_shift), src_cr + 1 + pixel_shift, 1);

  582.             }

  583.         }

  584.     }

  585. }

  586. 

  587. static av_always_inline int dctcoef_get(int16_t *mb, int high_bit_depth,

  588.                                         int index)

  589. {

  590.     if (high_bit_depth) {

  591.         return AV_RN32A(((int32_t *)mb) + index);

  592.     } else

  593.         return AV_RN16A(mb + index);

  594. }

  595. 

  596. static av_always_inline void dctcoef_set(int16_t *mb, int high_bit_depth,

  597.                                          int index, int value)

  598. {

  599.     if (high_bit_depth) {

  600.         AV_WN32A(((int32_t *)mb) + index, value);

  601.     } else

  602.         AV_WN16A(mb + index, value);

  603. }

  604. 

  605. static av_always_inline void hl_decode_mb_predict_luma(H264Context *h,

  606.                                                        int mb_type, int is_h264,

  607.                                                        int simple,

  608.                                                        int transform_bypass,

  609.                                                        int pixel_shift,

  610.                                                        int *block_offset,

  611.                                                        int linesize,

  612.                                                        uint8_t *dest_y, int p)

  613. {

  614.     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);

  615.     void (*idct_dc_add)(uint8_t *dst, int16_t *block, int stride);

  616.     int i;

  617.     int qscale = p == 0 ? h->qscale : h->chroma_qp[p - 1];

  618.     block_offset += 16 * p;

  619.     if (IS_INTRA4x4(mb_type)) {

  620.         if (IS_8x8DCT(mb_type)) {

  621.             if (transform_bypass) {

  622.                 idct_dc_add =

  623.                 idct_add    = h->h264dsp.h264_add_pixels8_clear;

  624.             } else {

  625.                 idct_dc_add = h->h264dsp.h264_idct8_dc_add;

  626.                 idct_add    = h->h264dsp.h264_idct8_add;

  627.             }

  628.             for (i = 0; i < 16; i += 4) {

  629.                 uint8_t *const ptr = dest_y + block_offset[i];

  630.                 const int dir      = h->intra4x4_pred_mode_cache[scan8[i]];

  631.                 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {

  632.                     h->hpc.pred8x8l_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  633.                 } else {

  634.                     const int nnz = h->non_zero_count_cache[scan8[i + p * 16]];

  635.                     h->hpc.pred8x8l[dir](ptr, (h->topleft_samples_available << i) & 0x8000,

  636.                                          (h->topright_samples_available << i) & 0x4000, linesize);

  637.                     if (nnz) {

  638.                         if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

  639.                             idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  640.                         else

  641.                             idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  642.                     }

  643.                 }

  644.             }

  645.         } else {

  646.             if (transform_bypass) {

  647.                 idct_dc_add  =

  648.                 idct_add     = h->h264dsp.h264_add_pixels4_clear;

  649.             } else {

  650.                 idct_dc_add = h->h264dsp.h264_idct_dc_add;

  651.                 idct_add    = h->h264dsp.h264_idct_add;

  652.             }

  653.             for (i = 0; i < 16; i++) {

  654.                 uint8_t *const ptr = dest_y + block_offset[i];

  655.                 const int dir      = h->intra4x4_pred_mode_cache[scan8[i]];

  656. 

  657.                 if (transform_bypass && h->sps.profile_idc == 244 && dir <= 1) {

  658.                     h->hpc.pred4x4_add[dir](ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  659.                 } else {

  660.                     uint8_t *topright;

  661.                     int nnz, tr;

  662.                     uint64_t tr_high;

  663.                     if (dir == DIAG_DOWN_LEFT_PRED || dir == VERT_LEFT_PRED) {

  664.                         const int topright_avail = (h->topright_samples_available << i) & 0x8000;

  665.                         assert(h->mb_y || linesize <= block_offset[i]);

  666.                         if (!topright_avail) {

  667.                             if (pixel_shift) {

  668.                                 tr_high  = ((uint16_t *)ptr)[3 - linesize / 2] * 0x0001000100010001ULL;

  669.                                 topright = (uint8_t *)&tr_high;

  670.                             } else {

  671.                                 tr       = ptr[3 - linesize] * 0x01010101u;

  672.                                 topright = (uint8_t *)&tr;

  673.                             }

  674.                         } else

  675.                             topright = ptr + (4 << pixel_shift) - linesize;

  676.                     } else

  677.                         topright = NULL;

  678. 

  679.                     h->hpc.pred4x4[dir](ptr, topright, linesize);

  680.                     nnz = h->non_zero_count_cache[scan8[i + p * 16]];

  681.                     if (nnz) {

  682.                         if (is_h264) {

  683.                             if (nnz == 1 && dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

  684.                                 idct_dc_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  685.                             else

  686.                                 idct_add(ptr, h->mb + (i * 16 + p * 256 << pixel_shift), linesize);

  687.                         } else if (CONFIG_SVQ3_DECODER)

  688.                             ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize, qscale, 0);

  689.                     }

  690.                 }

  691.             }

  692.         }

  693.     } else {

  694.         h->hpc.pred16x16[h->intra16x16_pred_mode](dest_y, linesize);

  695.         if (is_h264) {

  696.             if (h->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {

  697.                 if (!transform_bypass)

  698.                     h->h264dsp.h264_luma_dc_dequant_idct(h->mb + (p * 256 << pixel_shift),

  699.                                                          h->mb_luma_dc[p],

  700.                                                          h->dequant4_coeff[p][qscale][0]);

  701.                 else {

  702.                     static const uint8_t dc_mapping[16] = {

  703.                          0 * 16,  1 * 16,  4 * 16,  5 * 16,

  704.                          2 * 16,  3 * 16,  6 * 16,  7 * 16,

  705.                          8 * 16,  9 * 16, 12 * 16, 13 * 16,

  706.                         10 * 16, 11 * 16, 14 * 16, 15 * 16

  707.                     };

  708.                     for (i = 0; i < 16; i++)

  709.                         dctcoef_set(h->mb + (p * 256 << pixel_shift),

  710.                                     pixel_shift, dc_mapping[i],

  711.                                     dctcoef_get(h->mb_luma_dc[p],

  712.                                                 pixel_shift, i));

  713.                 }

  714.             }

  715.         } else if (CONFIG_SVQ3_DECODER)

  716.             ff_svq3_luma_dc_dequant_idct_c(h->mb + p * 256,

  717.                                            h->mb_luma_dc[p], qscale);

  718.     }

  719. }

  720. 

  721. static av_always_inline void hl_decode_mb_idct_luma(H264Context *h, int mb_type,

  722.                                                     int is_h264, int simple,

  723.                                                     int transform_bypass,

  724.                                                     int pixel_shift,

  725.                                                     int *block_offset,

  726.                                                     int linesize,

  727.                                                     uint8_t *dest_y, int p)

  728. {

  729.     void (*idct_add)(uint8_t *dst, int16_t *block, int stride);

  730.     int i;

  731.     block_offset += 16 * p;

  732.     if (!IS_INTRA4x4(mb_type)) {

  733.         if (is_h264) {

  734.             if (IS_INTRA16x16(mb_type)) {

  735.                 if (transform_bypass) {

  736.                     if (h->sps.profile_idc == 244 &&

  737.                         (h->intra16x16_pred_mode == VERT_PRED8x8 ||

  738.                          h->intra16x16_pred_mode == HOR_PRED8x8)) {

  739.                         h->hpc.pred16x16_add[h->intra16x16_pred_mode](dest_y, block_offset,

  740.                                                                       h->mb + (p * 256 << pixel_shift),

  741.                                                                       linesize);

  742.                     } else {

  743.                         for (i = 0; i < 16; i++)

  744.                             if (h->non_zero_count_cache[scan8[i + p * 16]] ||

  745.                                 dctcoef_get(h->mb, pixel_shift, i * 16 + p * 256))

  746.                                 h->h264dsp.h264_add_pixels4_clear(dest_y + block_offset[i],

  747.                                                                   h->mb + (i * 16 + p * 256 << pixel_shift),

  748.                                                                   linesize);

  749.                     }

  750.                 } else {

  751.                     h->h264dsp.h264_idct_add16intra(dest_y, block_offset,

  752.                                                     h->mb + (p * 256 << pixel_shift),

  753.                                                     linesize,

  754.                                                     h->non_zero_count_cache + p * 5 * 8);

  755.                 }

  756.             } else if (h->cbp & 15) {

  757.                 if (transform_bypass) {

  758.                     const int di = IS_8x8DCT(mb_type) ? 4 : 1;

  759.                     idct_add = IS_8x8DCT(mb_type) ? h->h264dsp.h264_add_pixels8_clear

  760.                                                   : h->h264dsp.h264_add_pixels4_clear;

  761.                     for (i = 0; i < 16; i += di)

  762.                         if (h->non_zero_count_cache[scan8[i + p * 16]])

  763.                             idct_add(dest_y + block_offset[i],

  764.                                      h->mb + (i * 16 + p * 256 << pixel_shift),

  765.                                      linesize);

  766.                 } else {

  767.                     if (IS_8x8DCT(mb_type))

  768.                         h->h264dsp.h264_idct8_add4(dest_y, block_offset,

  769.                                                    h->mb + (p * 256 << pixel_shift),

  770.                                                    linesize,

  771.                                                    h->non_zero_count_cache + p * 5 * 8);

  772.                     else

  773.                         h->h264dsp.h264_idct_add16(dest_y, block_offset,

  774.                                                    h->mb + (p * 256 << pixel_shift),

  775.                                                    linesize,

  776.                                                    h->non_zero_count_cache + p * 5 * 8);

  777.                 }

  778.             }

  779.         } else if (CONFIG_SVQ3_DECODER) {

  780.             for (i = 0; i < 16; i++)

  781.                 if (h->non_zero_count_cache[scan8[i + p * 16]] || h->mb[i * 16 + p * 256]) {

  782.                     // FIXME benchmark weird rule, & below

  783.                     uint8_t *const ptr = dest_y + block_offset[i];

  784.                     ff_svq3_add_idct_c(ptr, h->mb + i * 16 + p * 256, linesize,

  785.                                        h->qscale, IS_INTRA(mb_type) ? 1 : 0);

  786.                 }

  787.         }

  788.     }

  789. }

  790. 

  791. #define BITS   8

  792. #define SIMPLE 1

  793. #include "h264_mb_template.c"

  794. 

  795. #undef  BITS

  796. #define BITS   16

  797. #include "h264_mb_template.c"

  798. 

  799. #undef  SIMPLE

  800. #define SIMPLE 0

  801. #include "h264_mb_template.c"

  802. 

  803. void ff_h264_hl_decode_mb(H264Context *h)

  804. {

  805.     const int mb_xy   = h->mb_xy;

  806.     const int mb_type = h->cur_pic.mb_type[mb_xy];

  807.     int is_complex    = CONFIG_SMALL || h->is_complex ||

  808.                         IS_INTRA_PCM(mb_type) || h->qscale == 0;

  809. 

  810.     if (CHROMA444(h)) {

  811.         if (is_complex || h->pixel_shift)

  812.             hl_decode_mb_444_complex(h);

  813.         else

  814.             hl_decode_mb_444_simple_8(h);

  815.     } else if (is_complex) {

  816.         hl_decode_mb_complex(h);

  817.     } else if (h->pixel_shift) {

  818.         hl_decode_mb_simple_16(h);

  819.     } else

  820.         hl_decode_mb_simple_8(h);

  821. }