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FFmpeg/libavcodec/h264_mb.c

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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 "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_down = (raw_my & 3) ? 3 : 0;

  43.     int full_my            = (raw_my >> 2) + y_offset;

  44.     int bottom             = full_my + filter_height_down + height;

  45. 

  46.     av_assert2(height >= 0);

  47. 

  48.     return FFMAX(0, bottom);

  49. }

  50. 

  51. static inline void get_lowest_part_y(const H264Context *h, H264SliceContext *sl,

  52.                                      int16_t 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.     int16_t 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.         av_assert2(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.                 av_assert2(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.                     av_assert2((ref_pic->parent->reference & 3) == 3);

  179.                     ff_thread_await_progress(&ref_pic->parent->tf,

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

  181.                                                    pic_height - 1),

  182.                                              1);

  183.                     ff_thread_await_progress(&ref_pic->parent->tf,

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

  185.                                              0);

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

  187.                     ff_thread_await_progress(&ref_pic->parent->tf,

  188.                                              FFMIN(row * 2 + ref_field,

  189.                                                    pic_height - 1),

  190.                                              0);

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

  192.                     ff_thread_await_progress(&ref_pic->parent->tf,

  193.                                              FFMIN(row, pic_height - 1),

  194.                                              ref_field);

  195.                 } else {

  196.                     ff_thread_await_progress(&ref_pic->parent->tf,

  197.                                              FFMIN(row, pic_height - 1),

  198.                                              0);

  199.                 }

  200.             }

  201.         }

  202. }

  203. 

  204. static av_always_inline void mc_dir_part(const H264Context *h, H264SliceContext *sl,

  205.                                          H264Ref *pic,

  206.                                          int n, int square, int height,

  207.                                          int delta, int list,

  208.                                          uint8_t *dest_y, uint8_t *dest_cb,

  209.                                          uint8_t *dest_cr,

  210.                                          int src_x_offset, int src_y_offset,

  211.                                          const qpel_mc_func *qpix_op,

  212.                                          h264_chroma_mc_func chroma_op,

  213.                                          int pixel_shift, int chroma_idc)

  214. {

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

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

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

  218.     ptrdiff_t offset  = (mx >> 2) * (1 << pixel_shift) + (my >> 2) * sl->mb_linesize;

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

  220.     uint8_t *src_cb, *src_cr;

  221.     int extra_width  = 0;

  222.     int extra_height = 0;

  223.     int emu = 0;

  224.     const int full_mx    = mx >> 2;

  225.     const int full_my    = my >> 2;

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

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

  228.     int ysh;

  229. 

  230.     if (mx & 7)

  231.         extra_width -= 3;

  232.     if (my & 7)

  233.         extra_height -= 3;

  234. 

  235.     if (full_mx                <          0 - extra_width  ||

  236.         full_my                <          0 - extra_height ||

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

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

  239.         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,

  240.                                  src_y - (2 << pixel_shift) - 2 * sl->mb_linesize,

  241.                                  sl->mb_linesize, sl->mb_linesize,

  242.                                  16 + 5, 16 + 5 /*FIXME*/, full_mx - 2,

  243.                                  full_my - 2, pic_width, pic_height);

  244.         src_y = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;

  245.         emu   = 1;

  246.     }

  247. 

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

  249.     if (!square)

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

  251. 

  252.     if (CONFIG_GRAY && h->flags & AV_CODEC_FLAG_GRAY)

  253.         return;

  254. 

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

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

  257.         if (emu) {

  258.             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,

  259.                                      src_cb - (2 << pixel_shift) - 2 * sl->mb_linesize,

  260.                                      sl->mb_linesize, sl->mb_linesize,

  261.                                      16 + 5, 16 + 5 /*FIXME*/,

  262.                                      full_mx - 2, full_my - 2,

  263.                                      pic_width, pic_height);

  264.             src_cb = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;

  265.         }

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

  267.         if (!square)

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

  269. 

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

  271.         if (emu) {

  272.             h->vdsp.emulated_edge_mc(sl->edge_emu_buffer,

  273.                                      src_cr - (2 << pixel_shift) - 2 * sl->mb_linesize,

  274.                                      sl->mb_linesize, sl->mb_linesize,

  275.                                      16 + 5, 16 + 5 /*FIXME*/,

  276.                                      full_mx - 2, full_my - 2,

  277.                                      pic_width, pic_height);

  278.             src_cr = sl->edge_emu_buffer + (2 << pixel_shift) + 2 * sl->mb_linesize;

  279.         }

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

  281.         if (!square)

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

  283.         return;

  284.     }

  285. 

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

  287.     if (chroma_idc == 1 /* yuv420 */ && MB_FIELD(sl)) {

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

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

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

  291.     }

  292. 

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

  294.              (my >> ysh) * sl->mb_uvlinesize;

  295.     src_cr = pic->data[2] + ((mx >> 3) * (1 << pixel_shift)) +

  296.              (my >> ysh) * sl->mb_uvlinesize;

  297. 

  298.     if (emu) {

  299.         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cb,

  300.                                  sl->mb_uvlinesize, sl->mb_uvlinesize,

  301.                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

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

  303.         src_cb = sl->edge_emu_buffer;

  304.     }

  305.     chroma_op(dest_cb, src_cb, sl->mb_uvlinesize,

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

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

  308. 

  309.     if (emu) {

  310.         h->vdsp.emulated_edge_mc(sl->edge_emu_buffer, src_cr,

  311.                                  sl->mb_uvlinesize, sl->mb_uvlinesize,

  312.                                  9, 8 * chroma_idc + 1, (mx >> 3), (my >> ysh),

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

  314.         src_cr = sl->edge_emu_buffer;

  315.     }

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

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

  318. }

  319. 

  320. static av_always_inline void mc_part_std(const H264Context *h, H264SliceContext *sl,

  321.                                          int n, int square,

  322.                                          int height, int delta,

  323.                                          uint8_t *dest_y, uint8_t *dest_cb,

  324.                                          uint8_t *dest_cr,

  325.                                          int x_offset, int y_offset,

  326.                                          const qpel_mc_func *qpix_put,

  327.                                          h264_chroma_mc_func chroma_put,

  328.                                          const qpel_mc_func *qpix_avg,

  329.                                          h264_chroma_mc_func chroma_avg,

  330.                                          int list0, int list1,

  331.                                          int pixel_shift, int chroma_idc)

  332. {

  333.     const qpel_mc_func *qpix_op   = qpix_put;

  334.     h264_chroma_mc_func chroma_op = chroma_put;

  335. 

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

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

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

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

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

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

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

  343.     } else { /* yuv420 */

  344.         dest_cb += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;

  345.         dest_cr += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;

  346.     }

  347.     x_offset += 8 * sl->mb_x;

  348.     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));

  349. 

  350.     if (list0) {

  351.         H264Ref *ref = &sl->ref_list[0][sl->ref_cache[0][scan8[n]]];

  352.         mc_dir_part(h, sl, ref, n, square, height, delta, 0,

  353.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  354.                     qpix_op, chroma_op, pixel_shift, chroma_idc);

  355. 

  356.         qpix_op   = qpix_avg;

  357.         chroma_op = chroma_avg;

  358.     }

  359. 

  360.     if (list1) {

  361.         H264Ref *ref = &sl->ref_list[1][sl->ref_cache[1][scan8[n]]];

  362.         mc_dir_part(h, sl, ref, n, square, height, delta, 1,

  363.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  364.                     qpix_op, chroma_op, pixel_shift, chroma_idc);

  365.     }

  366. }

  367. 

  368. static av_always_inline void mc_part_weighted(const H264Context *h, H264SliceContext *sl,

  369.                                               int n, int square,

  370.                                               int height, int delta,

  371.                                               uint8_t *dest_y, uint8_t *dest_cb,

  372.                                               uint8_t *dest_cr,

  373.                                               int x_offset, int y_offset,

  374.                                               const qpel_mc_func *qpix_put,

  375.                                               h264_chroma_mc_func chroma_put,

  376.                                               h264_weight_func luma_weight_op,

  377.                                               h264_weight_func chroma_weight_op,

  378.                                               h264_biweight_func luma_weight_avg,

  379.                                               h264_biweight_func chroma_weight_avg,

  380.                                               int list0, int list1,

  381.                                               int pixel_shift, int chroma_idc)

  382. {

  383.     int chroma_height;

  384. 

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

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

  387.         chroma_height     = height;

  388.         chroma_weight_avg = luma_weight_avg;

  389.         chroma_weight_op  = luma_weight_op;

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

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

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

  393.         chroma_height = height;

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

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

  396.     } else { /* yuv420 */

  397.         chroma_height = height >> 1;

  398.         dest_cb      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;

  399.         dest_cr      += (x_offset << pixel_shift) + y_offset * sl->mb_uvlinesize;

  400.     }

  401.     x_offset += 8 * sl->mb_x;

  402.     y_offset += 8 * (sl->mb_y >> MB_FIELD(sl));

  403. 

  404.     if (list0 && list1) {

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

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

  407.         uint8_t *tmp_cb = sl->bipred_scratchpad;

  408.         uint8_t *tmp_cr = sl->bipred_scratchpad + (16 << pixel_shift);

  409.         uint8_t *tmp_y  = sl->bipred_scratchpad + 16 * sl->mb_uvlinesize;

  410.         int refn0       = sl->ref_cache[0][scan8[n]];

  411.         int refn1       = sl->ref_cache[1][scan8[n]];

  412. 

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

  414.                     dest_y, dest_cb, dest_cr,

  415.                     x_offset, y_offset, qpix_put, chroma_put,

  416.                     pixel_shift, chroma_idc);

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

  418.                     tmp_y, tmp_cb, tmp_cr,

  419.                     x_offset, y_offset, qpix_put, chroma_put,

  420.                     pixel_shift, chroma_idc);

  421. 

  422.         if (sl->pwt.use_weight == 2) {

  423.             int weight0 = sl->pwt.implicit_weight[refn0][refn1][sl->mb_y & 1];

  424.             int weight1 = 64 - weight0;

  425.             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize,

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

  427.             if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {

  428.                 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize,

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

  430.                 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize,

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

  432.             }

  433.         } else {

  434.             luma_weight_avg(dest_y, tmp_y, sl->mb_linesize, height,

  435.                             sl->pwt.luma_log2_weight_denom,

  436.                             sl->pwt.luma_weight[refn0][0][0],

  437.                             sl->pwt.luma_weight[refn1][1][0],

  438.                             sl->pwt.luma_weight[refn0][0][1] +

  439.                             sl->pwt.luma_weight[refn1][1][1]);

  440.             if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {

  441.                 chroma_weight_avg(dest_cb, tmp_cb, sl->mb_uvlinesize, chroma_height,

  442.                                   sl->pwt.chroma_log2_weight_denom,

  443.                                   sl->pwt.chroma_weight[refn0][0][0][0],

  444.                                   sl->pwt.chroma_weight[refn1][1][0][0],

  445.                                   sl->pwt.chroma_weight[refn0][0][0][1] +

  446.                                   sl->pwt.chroma_weight[refn1][1][0][1]);

  447.                 chroma_weight_avg(dest_cr, tmp_cr, sl->mb_uvlinesize, chroma_height,

  448.                                   sl->pwt.chroma_log2_weight_denom,

  449.                                   sl->pwt.chroma_weight[refn0][0][1][0],

  450.                                   sl->pwt.chroma_weight[refn1][1][1][0],

  451.                                   sl->pwt.chroma_weight[refn0][0][1][1] +

  452.                                   sl->pwt.chroma_weight[refn1][1][1][1]);

  453.             }

  454.         }

  455.     } else {

  456.         int list     = list1 ? 1 : 0;

  457.         int refn     = sl->ref_cache[list][scan8[n]];

  458.         H264Ref *ref = &sl->ref_list[list][refn];

  459.         mc_dir_part(h, sl, ref, n, square, height, delta, list,

  460.                     dest_y, dest_cb, dest_cr, x_offset, y_offset,

  461.                     qpix_put, chroma_put, pixel_shift, chroma_idc);

  462. 

  463.         luma_weight_op(dest_y, sl->mb_linesize, height,

  464.                        sl->pwt.luma_log2_weight_denom,

  465.                        sl->pwt.luma_weight[refn][list][0],

  466.                        sl->pwt.luma_weight[refn][list][1]);

  467.         if (!CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {

  468.             if (sl->pwt.use_weight_chroma) {

  469.                 chroma_weight_op(dest_cb, sl->mb_uvlinesize, chroma_height,

  470.                                  sl->pwt.chroma_log2_weight_denom,

  471.                                  sl->pwt.chroma_weight[refn][list][0][0],

  472.                                  sl->pwt.chroma_weight[refn][list][0][1]);

  473.                 chroma_weight_op(dest_cr, sl->mb_uvlinesize, chroma_height,

  474.                                  sl->pwt.chroma_log2_weight_denom,

  475.                                  sl->pwt.chroma_weight[refn][list][1][0],

  476.                                  sl->pwt.chroma_weight[refn][list][1][1]);

  477.             }

  478.         }

  479.     }

  480. }

  481. 

  482. static av_always_inline void prefetch_motion(const H264Context *h, H264SliceContext *sl,

  483.                                              int list, int pixel_shift,

  484.                                              int chroma_idc)

  485. {

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

  487.      * optimized for 64byte cache lines */

  488.     const int refn = sl->ref_cache[list][scan8[0]];

  489.     if (refn >= 0) {

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

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

  492.         uint8_t **src = sl->ref_list[list][refn].data;

  493.         int off       =  mx * (1<< pixel_shift) +

  494.                         (my + (sl->mb_x & 3) * 4) * sl->mb_linesize +

  495.                         (64 << pixel_shift);

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

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

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

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

  500.         } else {

  501.             off= ((mx>>1)+64) * (1<<pixel_shift) + ((my>>1) + (sl->mb_x&7))*sl->uvlinesize;

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

  503.         }

  504.     }

  505. }

  506. 

  507. static av_always_inline void xchg_mb_border(const H264Context *h, H264SliceContext *sl,

  508.                                             uint8_t *src_y,

  509.                                             uint8_t *src_cb, uint8_t *src_cr,

  510.                                             int linesize, int uvlinesize,

  511.                                             int xchg, int chroma444,

  512.                                             int simple, int pixel_shift)

  513. {

  514.     int deblock_topleft;

  515.     int deblock_top;

  516.     int top_idx = 1;

  517.     uint8_t *top_border_m1;

  518.     uint8_t *top_border;

  519. 

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

  521.         if (sl->mb_y & 1) {

  522.             if (!MB_MBAFF(sl))

  523.                 return;

  524.         } else {

  525.             top_idx = MB_MBAFF(sl) ? 0 : 1;

  526.         }

  527.     }

  528. 

  529.     if (sl->deblocking_filter == 2) {

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

  531.         deblock_top     = sl->top_type;

  532.     } else {

  533.         deblock_topleft = (sl->mb_x > 0);

  534.         deblock_top     = (sl->mb_y > !!MB_FIELD(sl));

  535.     }

  536. 

  537.     src_y  -= linesize   + 1 + pixel_shift;

  538.     src_cb -= uvlinesize + 1 + pixel_shift;

  539.     src_cr -= uvlinesize + 1 + pixel_shift;

  540. 

  541.     top_border_m1 = sl->top_borders[top_idx][sl->mb_x - 1];

  542.     top_border    = sl->top_borders[top_idx][sl->mb_x];

  543. 

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

  545.     if (pixel_shift) {                          \

  546.         if (xchg) {                             \

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

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

  549.         } else {                                \

  550.             AV_COPY128(b, a);                   \

  551.         }                                       \

  552.     } else if (xchg)                            \

  553.         AV_SWAP64(b, a);                        \

  554.     else                                        \

  555.         AV_COPY64(b, a);

  556. 

  557.     if (deblock_top) {

  558.         if (deblock_topleft) {

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

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

  561.         }

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

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

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

  565.             XCHG(sl->top_borders[top_idx][sl->mb_x + 1],

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

  567.         }

  568.         if (simple || !CONFIG_GRAY || !(h->flags & AV_CODEC_FLAG_GRAY)) {

  569.             if (chroma444) {

  570.                 if (deblock_topleft) {

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

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

  573.                 }

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

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

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

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

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

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

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

  581.                 }

  582.             } else {

  583.                 if (deblock_topleft) {

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

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

  586.                 }

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

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

  589.             }

  590.         }

  591.     }

  592. }

  593. 

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

  595.                                         int index)

  596. {

  597.     if (high_bit_depth) {

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

  599.     } else

  600.         return AV_RN16A(mb + index);

  601. }

  602. 

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

  604.                                          int index, int value)

  605. {

  606.     if (high_bit_depth) {

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

  608.     } else

  609.         AV_WN16A(mb + index, value);

  610. }

  611. 

  612. static av_always_inline void hl_decode_mb_predict_luma(const H264Context *h,

  613.                                                        H264SliceContext *sl,

  614.                                                        int mb_type, int simple,

  615.                                                        int transform_bypass,

  616.                                                        int pixel_shift,

  617.                                                        const int *block_offset,

  618.                                                        int linesize,

  619.                                                        uint8_t *dest_y, int p)

  620. {

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

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

  623.     int i;

  624.     int qscale = p == 0 ? sl->qscale : sl->chroma_qp[p - 1];

  625.     block_offset += 16 * p;

  626.     if (IS_INTRA4x4(mb_type)) {

  627.         if (IS_8x8DCT(mb_type)) {

  628.             if (transform_bypass) {

  629.                 idct_dc_add =

  630.                 idct_add    = h->h264dsp.h264_add_pixels8_clear;

  631.             } else {

  632.                 idct_dc_add = h->h264dsp.h264_idct8_dc_add;

  633.                 idct_add    = h->h264dsp.h264_idct8_add;

  634.             }

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

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

  637.                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];

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

  639.                     if (h->sei.unregistered.x264_build != -1) {

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

  641.                     } else

  642.                         h->hpc.pred8x8l_filter_add[dir](ptr, sl->mb + (i * 16 + p * 256 << pixel_shift),

  643.                                                         (sl-> topleft_samples_available << i) & 0x8000,

  644.                                                         (sl->topright_samples_available << i) & 0x4000, linesize);

  645.                 } else {

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

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

  648.                                          (sl->topright_samples_available << i) & 0x4000, linesize);

  649.                     if (nnz) {

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

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

  652.                         else

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

  654.                     }

  655.                 }

  656.             }

  657.         } else {

  658.             if (transform_bypass) {

  659.                 idct_dc_add  =

  660.                 idct_add     = h->h264dsp.h264_add_pixels4_clear;

  661.             } else {

  662.                 idct_dc_add = h->h264dsp.h264_idct_dc_add;

  663.                 idct_add    = h->h264dsp.h264_idct_add;

  664.             }

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

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

  667.                 const int dir      = sl->intra4x4_pred_mode_cache[scan8[i]];

  668. 

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

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

  671.                 } else {

  672.                     uint8_t *topright;

  673.                     int nnz, tr;

  674.                     uint64_t tr_high;

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

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

  677.                         av_assert2(sl->mb_y || linesize <= block_offset[i]);

  678.                         if (!topright_avail) {

  679.                             if (pixel_shift) {

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

  681.                                 topright = (uint8_t *)&tr_high;

  682.                             } else {

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

  684.                                 topright = (uint8_t *)&tr;

  685.                             }

  686.                         } else

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

  688.                     } else

  689.                         topright = NULL;

  690. 

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

  692.                     nnz = sl->non_zero_count_cache[scan8[i + p * 16]];

  693.                     if (nnz) {

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

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

  696.                         else

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

  698.                     }

  699.                 }

  700.             }

  701.         }

  702.     } else {

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

  704.         if (sl->non_zero_count_cache[scan8[LUMA_DC_BLOCK_INDEX + p]]) {

  705.             if (!transform_bypass)

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

  707.                                                      sl->mb_luma_dc[p],

  708.                                                      h->ps.pps->dequant4_coeff[p][qscale][0]);

  709.             else {

  710.                 static const uint8_t dc_mapping[16] = {

  711.                      0 * 16,  1 * 16,  4 * 16,  5 * 16,

  712.                      2 * 16,  3 * 16,  6 * 16,  7 * 16,

  713.                      8 * 16,  9 * 16, 12 * 16, 13 * 16,

  714.                     10 * 16, 11 * 16, 14 * 16, 15 * 16

  715.                 };

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

  717.                     dctcoef_set(sl->mb + (p * 256 << pixel_shift),

  718.                                 pixel_shift, dc_mapping[i],

  719.                                 dctcoef_get(sl->mb_luma_dc[p],

  720.                                             pixel_shift, i));

  721.             }

  722.         }

  723.     }

  724. }

  725. 

  726. static av_always_inline void hl_decode_mb_idct_luma(const H264Context *h, H264SliceContext *sl,

  727.                                                     int mb_type, int simple,

  728.                                                     int transform_bypass,

  729.                                                     int pixel_shift,

  730.                                                     const int *block_offset,

  731.                                                     int linesize,

  732.                                                     uint8_t *dest_y, int p)

  733. {

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

  735.     int i;

  736.     block_offset += 16 * p;

  737.     if (!IS_INTRA4x4(mb_type)) {

  738.         if (IS_INTRA16x16(mb_type)) {

  739.             if (transform_bypass) {

  740.                 if (h->ps.sps->profile_idc == 244 &&

  741.                     (sl->intra16x16_pred_mode == VERT_PRED8x8 ||

  742.                      sl->intra16x16_pred_mode == HOR_PRED8x8)) {

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

  744.                                                                    sl->mb + (p * 256 << pixel_shift),

  745.                                                                    linesize);

  746.                 } else {

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

  748.                         if (sl->non_zero_count_cache[scan8[i + p * 16]] ||

  749.                             dctcoef_get(sl->mb, pixel_shift, i * 16 + p * 256))

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

  751.                                                               sl->mb + (i * 16 + p * 256 << pixel_shift),

  752.                                                               linesize);

  753.                 }

  754.             } else {

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

  756.                                                 sl->mb + (p * 256 << pixel_shift),

  757.                                                 linesize,

  758.                                                 sl->non_zero_count_cache + p * 5 * 8);

  759.             }

  760.         } else if (sl->cbp & 15) {

  761.             if (transform_bypass) {

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

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

  764.                     : h->h264dsp.h264_add_pixels4_clear;

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

  766.                     if (sl->non_zero_count_cache[scan8[i + p * 16]])

  767.                         idct_add(dest_y + block_offset[i],

  768.                                  sl->mb + (i * 16 + p * 256 << pixel_shift),

  769.                                  linesize);

  770.             } else {

  771.                 if (IS_8x8DCT(mb_type))

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

  773.                                                sl->mb + (p * 256 << pixel_shift),

  774.                                                linesize,

  775.                                                sl->non_zero_count_cache + p * 5 * 8);

  776.                 else

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

  778.                                                sl->mb + (p * 256 << pixel_shift),

  779.                                                linesize,

  780.                                                sl->non_zero_count_cache + p * 5 * 8);

  781.             }

  782.         }

  783.     }

  784. }

  785. 

  786. #define BITS   8

  787. #define SIMPLE 1

  788. #include "h264_mb_template.c"

  789. 

  790. #undef  BITS

  791. #define BITS   16

  792. #include "h264_mb_template.c"

  793. 

  794. #undef  SIMPLE

  795. #define SIMPLE 0

  796. #include "h264_mb_template.c"

  797. 

  798. void ff_h264_hl_decode_mb(const H264Context *h, H264SliceContext *sl)

  799. {

  800.     const int mb_xy   = sl->mb_xy;

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

  802.     int is_complex    = CONFIG_SMALL || sl->is_complex ||

  803.                         IS_INTRA_PCM(mb_type) || sl->qscale == 0;

  804. 

  805.     if (CHROMA444(h)) {

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

  807.             hl_decode_mb_444_complex(h, sl);

  808.         else

  809.             hl_decode_mb_444_simple_8(h, sl);

  810.     } else if (is_complex) {

  811.         hl_decode_mb_complex(h, sl);

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

  813.         hl_decode_mb_simple_16(h, sl);

  814.     } else

  815.         hl_decode_mb_simple_8(h, sl);

  816. }