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FFmpeg/libavcodec/mpegvideo_motion.c

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  1. /*

  2.  * Copyright (c) 2000,2001 Fabrice Bellard

  3.  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>

  4.  *

  5.  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>

  6.  *

  7.  * This file is part of Libav.

  8.  *

  9.  * Libav is free software; you can redistribute it and/or

  10.  * modify it under the terms of the GNU Lesser General Public

  11.  * License as published by the Free Software Foundation; either

  12.  * version 2.1 of the License, or (at your option) any later version.

  13.  *

  14.  * Libav is distributed in the hope that it will be useful,

  15.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  16.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  17.  * Lesser General Public License for more details.

  18.  *

  19.  * You should have received a copy of the GNU Lesser General Public

  20.  * License along with Libav; if not, write to the Free Software

  21.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  22.  */

  23. 

  24. #include <string.h>

  25. 

  26. #include "libavutil/internal.h"

  27. #include "avcodec.h"

  28. #include "h261.h"

  29. #include "mpegutils.h"

  30. #include "mpegvideo.h"

  31. #include "mjpegenc.h"

  32. #include "msmpeg4.h"

  33. #include "qpeldsp.h"

  34. #include "wmv2.h"

  35. #include <limits.h>

  36. 

  37. static void gmc1_motion(MpegEncContext *s,

  38.                         uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,

  39.                         uint8_t **ref_picture)

  40. {

  41.     uint8_t *ptr;

  42.     int src_x, src_y, motion_x, motion_y;

  43.     ptrdiff_t offset, linesize, uvlinesize;

  44.     int emu = 0;

  45. 

  46.     motion_x   = s->sprite_offset[0][0];

  47.     motion_y   = s->sprite_offset[0][1];

  48.     src_x      = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy + 1));

  49.     src_y      = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy + 1));

  50.     motion_x <<= (3 - s->sprite_warping_accuracy);

  51.     motion_y <<= (3 - s->sprite_warping_accuracy);

  52.     src_x      = av_clip(src_x, -16, s->width);

  53.     if (src_x == s->width)

  54.         motion_x = 0;

  55.     src_y = av_clip(src_y, -16, s->height);

  56.     if (src_y == s->height)

  57.         motion_y = 0;

  58. 

  59.     linesize   = s->linesize;

  60.     uvlinesize = s->uvlinesize;

  61. 

  62.     ptr = ref_picture[0] + src_y * linesize + src_x;

  63. 

  64.     if ((unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0) ||

  65.         (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)) {

  66.         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  67.                                  linesize, linesize,

  68.                                  17, 17,

  69.                                  src_x, src_y,

  70.                                  s->h_edge_pos, s->v_edge_pos);

  71.         ptr = s->sc.edge_emu_buffer;

  72.     }

  73. 

  74.     if ((motion_x | motion_y) & 7) {

  75.         s->mdsp.gmc1(dest_y, ptr, linesize, 16,

  76.                      motion_x & 15, motion_y & 15, 128 - s->no_rounding);

  77.         s->mdsp.gmc1(dest_y + 8, ptr + 8, linesize, 16,

  78.                      motion_x & 15, motion_y & 15, 128 - s->no_rounding);

  79.     } else {

  80.         int dxy;

  81. 

  82.         dxy = ((motion_x >> 3) & 1) | ((motion_y >> 2) & 2);

  83.         if (s->no_rounding) {

  84.             s->hdsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);

  85.         } else {

  86.             s->hdsp.put_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);

  87.         }

  88.     }

  89. 

  90.     if (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY)

  91.         return;

  92. 

  93.     motion_x   = s->sprite_offset[1][0];

  94.     motion_y   = s->sprite_offset[1][1];

  95.     src_x      = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy + 1));

  96.     src_y      = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy + 1));

  97.     motion_x <<= (3 - s->sprite_warping_accuracy);

  98.     motion_y <<= (3 - s->sprite_warping_accuracy);

  99.     src_x      = av_clip(src_x, -8, s->width >> 1);

  100.     if (src_x == s->width >> 1)

  101.         motion_x = 0;

  102.     src_y = av_clip(src_y, -8, s->height >> 1);

  103.     if (src_y == s->height >> 1)

  104.         motion_y = 0;

  105. 

  106.     offset = (src_y * uvlinesize) + src_x;

  107.     ptr    = ref_picture[1] + offset;

  108.     if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - 9, 0) ||

  109.         (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - 9, 0)) {

  110.         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  111.                                  uvlinesize, uvlinesize,

  112.                                  9, 9,

  113.                                  src_x, src_y,

  114.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  115.         ptr = s->sc.edge_emu_buffer;

  116.         emu = 1;

  117.     }

  118.     s->mdsp.gmc1(dest_cb, ptr, uvlinesize, 8,

  119.                  motion_x & 15, motion_y & 15, 128 - s->no_rounding);

  120. 

  121.     ptr = ref_picture[2] + offset;

  122.     if (emu) {

  123.         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  124.                                  uvlinesize, uvlinesize,

  125.                                  9, 9,

  126.                                  src_x, src_y,

  127.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  128.         ptr = s->sc.edge_emu_buffer;

  129.     }

  130.     s->mdsp.gmc1(dest_cr, ptr, uvlinesize, 8,

  131.                  motion_x & 15, motion_y & 15, 128 - s->no_rounding);

  132. }

  133. 

  134. static void gmc_motion(MpegEncContext *s,

  135.                        uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,

  136.                        uint8_t **ref_picture)

  137. {

  138.     uint8_t *ptr;

  139.     int linesize, uvlinesize;

  140.     const int a = s->sprite_warping_accuracy;

  141.     int ox, oy;

  142. 

  143.     linesize   = s->linesize;

  144.     uvlinesize = s->uvlinesize;

  145. 

  146.     ptr = ref_picture[0];

  147. 

  148.     ox = s->sprite_offset[0][0] + s->sprite_delta[0][0] * s->mb_x * 16 +

  149.          s->sprite_delta[0][1] * s->mb_y * 16;

  150.     oy = s->sprite_offset[0][1] + s->sprite_delta[1][0] * s->mb_x * 16 +

  151.          s->sprite_delta[1][1] * s->mb_y * 16;

  152. 

  153.     s->mdsp.gmc(dest_y, ptr, linesize, 16,

  154.                 ox, oy,

  155.                 s->sprite_delta[0][0], s->sprite_delta[0][1],

  156.                 s->sprite_delta[1][0], s->sprite_delta[1][1],

  157.                 a + 1, (1 << (2 * a + 1)) - s->no_rounding,

  158.                 s->h_edge_pos, s->v_edge_pos);

  159.     s->mdsp.gmc(dest_y + 8, ptr, linesize, 16,

  160.                 ox + s->sprite_delta[0][0] * 8,

  161.                 oy + s->sprite_delta[1][0] * 8,

  162.                 s->sprite_delta[0][0], s->sprite_delta[0][1],

  163.                 s->sprite_delta[1][0], s->sprite_delta[1][1],

  164.                 a + 1, (1 << (2 * a + 1)) - s->no_rounding,

  165.                 s->h_edge_pos, s->v_edge_pos);

  166. 

  167.     if (CONFIG_GRAY && s->avctx->flags & AV_CODEC_FLAG_GRAY)

  168.         return;

  169. 

  170.     ox = s->sprite_offset[1][0] + s->sprite_delta[0][0] * s->mb_x * 8 +

  171.          s->sprite_delta[0][1] * s->mb_y * 8;

  172.     oy = s->sprite_offset[1][1] + s->sprite_delta[1][0] * s->mb_x * 8 +

  173.          s->sprite_delta[1][1] * s->mb_y * 8;

  174. 

  175.     ptr = ref_picture[1];

  176.     s->mdsp.gmc(dest_cb, ptr, uvlinesize, 8,

  177.                 ox, oy,

  178.                 s->sprite_delta[0][0], s->sprite_delta[0][1],

  179.                 s->sprite_delta[1][0], s->sprite_delta[1][1],

  180.                 a + 1, (1 << (2 * a + 1)) - s->no_rounding,

  181.                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  182. 

  183.     ptr = ref_picture[2];

  184.     s->mdsp.gmc(dest_cr, ptr, uvlinesize, 8,

  185.                 ox, oy,

  186.                 s->sprite_delta[0][0], s->sprite_delta[0][1],

  187.                 s->sprite_delta[1][0], s->sprite_delta[1][1],

  188.                 a + 1, (1 << (2 * a + 1)) - s->no_rounding,

  189.                 s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  190. }

  191. 

  192. static inline int hpel_motion(MpegEncContext *s,

  193.                               uint8_t *dest, uint8_t *src,

  194.                               int src_x, int src_y,

  195.                               op_pixels_func *pix_op,

  196.                               int motion_x, int motion_y)

  197. {

  198.     int dxy = 0;

  199.     int emu = 0;

  200. 

  201.     src_x += motion_x >> 1;

  202.     src_y += motion_y >> 1;

  203. 

  204.     /* WARNING: do no forget half pels */

  205.     src_x = av_clip(src_x, -16, s->width); // FIXME unneeded for emu?

  206.     if (src_x != s->width)

  207.         dxy |= motion_x & 1;

  208.     src_y = av_clip(src_y, -16, s->height);

  209.     if (src_y != s->height)

  210.         dxy |= (motion_y & 1) << 1;

  211.     src += src_y * s->linesize + src_x;

  212. 

  213.     if (s->unrestricted_mv) {

  214.         if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 8, 0) ||

  215.             (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 1) - 8, 0)) {

  216.             s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, src,

  217.                                      s->linesize, s->linesize,

  218.                                      9, 9,

  219.                                      src_x, src_y, s->h_edge_pos,

  220.                                      s->v_edge_pos);

  221.             src = s->sc.edge_emu_buffer;

  222.             emu = 1;

  223.         }

  224.     }

  225.     pix_op[dxy](dest, src, s->linesize, 8);

  226.     return emu;

  227. }

  228. 

  229. static av_always_inline

  230. void emulated_edge_mc(MpegEncContext *s,

  231.                       int src_x, int src_y,

  232.                       int uvsrc_x, int uvsrc_y,

  233.                       int field_based,

  234.                       uint8_t **ptr_y,

  235.                       uint8_t **ptr_cb,

  236.                       uint8_t **ptr_cr)

  237. {

  238.     s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, *ptr_y,

  239.                              s->linesize, s->linesize,

  240.                              17, 17 + field_based,

  241.                              src_x, src_y * (1 << field_based),

  242.                              s->h_edge_pos, s->v_edge_pos);

  243.     *ptr_y = s->sc.edge_emu_buffer;

  244.     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {

  245.         uint8_t *uvbuf = s->sc.edge_emu_buffer + 18 * s->linesize;

  246.         s->vdsp.emulated_edge_mc(uvbuf, *ptr_cb,

  247.                                  s->uvlinesize, s->uvlinesize,

  248.                                  9, 9 + field_based,

  249.                                  uvsrc_x, uvsrc_y * (1 << field_based),

  250.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  251.         s->vdsp.emulated_edge_mc(uvbuf + 16, *ptr_cr,

  252.                                  s->uvlinesize, s->uvlinesize,

  253.                                  9, 9 + field_based,

  254.                                  uvsrc_x, uvsrc_y * (1 << field_based),

  255.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  256.         *ptr_cb = uvbuf;

  257.         *ptr_cr = uvbuf + 16;

  258.     }

  259. }

  260. 

  261. static av_always_inline

  262. void mpeg_motion_internal(MpegEncContext *s,

  263.                           uint8_t *dest_y,

  264.                           uint8_t *dest_cb,

  265.                           uint8_t *dest_cr,

  266.                           int field_based,

  267.                           int bottom_field,

  268.                           int field_select,

  269.                           uint8_t **ref_picture,

  270.                           op_pixels_func (*pix_op)[4],

  271.                           int motion_x,

  272.                           int motion_y,

  273.                           int h,

  274.                           int is_mpeg12,

  275.                           int mb_y)

  276. {

  277.     uint8_t *ptr_y, *ptr_cb, *ptr_cr;

  278.     int dxy, uvdxy, mx, my, src_x, src_y,

  279.         uvsrc_x, uvsrc_y, v_edge_pos;

  280.     ptrdiff_t uvlinesize, linesize;

  281. 

  282. #if 0

  283.     if (s->quarter_sample) {

  284.         motion_x >>= 1;

  285.         motion_y >>= 1;

  286.     }

  287. #endif

  288. 

  289.     v_edge_pos = s->v_edge_pos >> field_based;

  290.     linesize   = s->current_picture.f->linesize[0] << field_based;

  291.     uvlinesize = s->current_picture.f->linesize[1] << field_based;

  292. 

  293.     dxy   = ((motion_y & 1) << 1) | (motion_x & 1);

  294.     src_x = s->mb_x * 16 + (motion_x >> 1);

  295.     src_y = (mb_y << (4 - field_based)) + (motion_y >> 1);

  296. 

  297.     if (!is_mpeg12 && s->out_format == FMT_H263) {

  298.         if ((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based) {

  299.             mx      = (motion_x >> 1) | (motion_x & 1);

  300.             my      = motion_y >> 1;

  301.             uvdxy   = ((my & 1) << 1) | (mx & 1);

  302.             uvsrc_x = s->mb_x * 8 + (mx >> 1);

  303.             uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);

  304.         } else {

  305.             uvdxy   = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);

  306.             uvsrc_x = src_x >> 1;

  307.             uvsrc_y = src_y >> 1;

  308.         }

  309.     // Even chroma mv's are full pel in H261

  310.     } else if (!is_mpeg12 && s->out_format == FMT_H261) {

  311.         mx      = motion_x / 4;

  312.         my      = motion_y / 4;

  313.         uvdxy   = 0;

  314.         uvsrc_x = s->mb_x * 8 + mx;

  315.         uvsrc_y = mb_y * 8 + my;

  316.     } else {

  317.         if (s->chroma_y_shift) {

  318.             mx      = motion_x / 2;

  319.             my      = motion_y / 2;

  320.             uvdxy   = ((my & 1) << 1) | (mx & 1);

  321.             uvsrc_x = s->mb_x * 8 + (mx >> 1);

  322.             uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);

  323.         } else {

  324.             if (s->chroma_x_shift) {

  325.                 // Chroma422

  326.                 mx      = motion_x / 2;

  327.                 uvdxy   = ((motion_y & 1) << 1) | (mx & 1);

  328.                 uvsrc_x = s->mb_x * 8 + (mx >> 1);

  329.                 uvsrc_y = src_y;

  330.             } else {

  331.                 // Chroma444

  332.                 uvdxy   = dxy;

  333.                 uvsrc_x = src_x;

  334.                 uvsrc_y = src_y;

  335.             }

  336.         }

  337.     }

  338. 

  339.     ptr_y  = ref_picture[0] + src_y * linesize + src_x;

  340.     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;

  341.     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;

  342. 

  343.     if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 1) - 16, 0) ||

  344.         (unsigned)src_y > FFMAX(v_edge_pos - (motion_y & 1) - h, 0)) {

  345.         if (is_mpeg12 ||

  346.             s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||

  347.             s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {

  348.             av_log(s->avctx, AV_LOG_DEBUG,

  349.                    "MPEG motion vector out of boundary (%d %d)\n", src_x,

  350.                    src_y);

  351.             return;

  352.         }

  353.         emulated_edge_mc(s, src_x, src_y, uvsrc_x, uvsrc_y, field_based,

  354.                          &ptr_y, &ptr_cb, &ptr_cr);

  355.     }

  356. 

  357.     /* FIXME use this for field pix too instead of the obnoxious hack which

  358.      * changes picture.data */

  359.     if (bottom_field) {

  360.         dest_y  += s->linesize;

  361.         dest_cb += s->uvlinesize;

  362.         dest_cr += s->uvlinesize;

  363.     }

  364. 

  365.     if (field_select) {

  366.         ptr_y  += s->linesize;

  367.         ptr_cb += s->uvlinesize;

  368.         ptr_cr += s->uvlinesize;

  369.     }

  370. 

  371.     pix_op[0][dxy](dest_y, ptr_y, linesize, h);

  372. 

  373.     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {

  374.         pix_op[s->chroma_x_shift][uvdxy]

  375.             (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);

  376.         pix_op[s->chroma_x_shift][uvdxy]

  377.             (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);

  378.     }

  379.     if (!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&

  380.         s->out_format == FMT_H261) {

  381.         ff_h261_loop_filter(s);

  382.     }

  383. }

  384. /* apply one mpeg motion vector to the three components */

  385. static void mpeg_motion(MpegEncContext *s,

  386.                         uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,

  387.                         int field_select, uint8_t **ref_picture,

  388.                         op_pixels_func (*pix_op)[4],

  389.                         int motion_x, int motion_y, int h, int mb_y)

  390. {

  391. #if !CONFIG_SMALL

  392.     if (s->out_format == FMT_MPEG1)

  393.         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,

  394.                              field_select, ref_picture, pix_op,

  395.                              motion_x, motion_y, h, 1, mb_y);

  396.     else

  397. #endif

  398.         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,

  399.                              field_select, ref_picture, pix_op,

  400.                              motion_x, motion_y, h, 0, mb_y);

  401. }

  402. 

  403. static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,

  404.                               uint8_t *dest_cb, uint8_t *dest_cr,

  405.                               int bottom_field, int field_select,

  406.                               uint8_t **ref_picture,

  407.                               op_pixels_func (*pix_op)[4],

  408.                               int motion_x, int motion_y, int h, int mb_y)

  409. {

  410. #if !CONFIG_SMALL

  411.     if(s->out_format == FMT_MPEG1)

  412.         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,

  413.                              bottom_field, field_select, ref_picture, pix_op,

  414.                              motion_x, motion_y, h, 1, mb_y);

  415.     else

  416. #endif

  417.         mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,

  418.                              bottom_field, field_select, ref_picture, pix_op,

  419.                              motion_x, motion_y, h, 0, mb_y);

  420. }

  421. 

  422. // FIXME: SIMDify, avg variant, 16x16 version

  423. static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride)

  424. {

  425.     int x;

  426.     uint8_t *const top    = src[1];

  427.     uint8_t *const left   = src[2];

  428.     uint8_t *const mid    = src[0];

  429.     uint8_t *const right  = src[3];

  430.     uint8_t *const bottom = src[4];

  431. #define OBMC_FILTER(x, t, l, m, r, b)\

  432.     dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3

  433. #define OBMC_FILTER4(x, t, l, m, r, b)\

  434.     OBMC_FILTER(x         , t, l, m, r, b);\

  435.     OBMC_FILTER(x+1       , t, l, m, r, b);\

  436.     OBMC_FILTER(x  +stride, t, l, m, r, b);\

  437.     OBMC_FILTER(x+1+stride, t, l, m, r, b);

  438. 

  439.     x = 0;

  440.     OBMC_FILTER (x    , 2, 2, 4, 0, 0);

  441.     OBMC_FILTER (x + 1, 2, 1, 5, 0, 0);

  442.     OBMC_FILTER4(x + 2, 2, 1, 5, 0, 0);

  443.     OBMC_FILTER4(x + 4, 2, 0, 5, 1, 0);

  444.     OBMC_FILTER (x + 6, 2, 0, 5, 1, 0);

  445.     OBMC_FILTER (x + 7, 2, 0, 4, 2, 0);

  446.     x += stride;

  447.     OBMC_FILTER (x    , 1, 2, 5, 0, 0);

  448.     OBMC_FILTER (x + 1, 1, 2, 5, 0, 0);

  449.     OBMC_FILTER (x + 6, 1, 0, 5, 2, 0);

  450.     OBMC_FILTER (x + 7, 1, 0, 5, 2, 0);

  451.     x += stride;

  452.     OBMC_FILTER4(x    , 1, 2, 5, 0, 0);

  453.     OBMC_FILTER4(x + 2, 1, 1, 6, 0, 0);

  454.     OBMC_FILTER4(x + 4, 1, 0, 6, 1, 0);

  455.     OBMC_FILTER4(x + 6, 1, 0, 5, 2, 0);

  456.     x += 2 * stride;

  457.     OBMC_FILTER4(x    , 0, 2, 5, 0, 1);

  458.     OBMC_FILTER4(x + 2, 0, 1, 6, 0, 1);

  459.     OBMC_FILTER4(x + 4, 0, 0, 6, 1, 1);

  460.     OBMC_FILTER4(x + 6, 0, 0, 5, 2, 1);

  461.     x += 2*stride;

  462.     OBMC_FILTER (x    , 0, 2, 5, 0, 1);

  463.     OBMC_FILTER (x + 1, 0, 2, 5, 0, 1);

  464.     OBMC_FILTER4(x + 2, 0, 1, 5, 0, 2);

  465.     OBMC_FILTER4(x + 4, 0, 0, 5, 1, 2);

  466.     OBMC_FILTER (x + 6, 0, 0, 5, 2, 1);

  467.     OBMC_FILTER (x + 7, 0, 0, 5, 2, 1);

  468.     x += stride;

  469.     OBMC_FILTER (x    , 0, 2, 4, 0, 2);

  470.     OBMC_FILTER (x + 1, 0, 1, 5, 0, 2);

  471.     OBMC_FILTER (x + 6, 0, 0, 5, 1, 2);

  472.     OBMC_FILTER (x + 7, 0, 0, 4, 2, 2);

  473. }

  474. 

  475. /* obmc for 1 8x8 luma block */

  476. static inline void obmc_motion(MpegEncContext *s,

  477.                                uint8_t *dest, uint8_t *src,

  478.                                int src_x, int src_y,

  479.                                op_pixels_func *pix_op,

  480.                                int16_t mv[5][2] /* mid top left right bottom */)

  481. #define MID    0

  482. {

  483.     int i;

  484.     uint8_t *ptr[5];

  485. 

  486.     assert(s->quarter_sample == 0);

  487. 

  488.     for (i = 0; i < 5; i++) {

  489.         if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {

  490.             ptr[i] = ptr[MID];

  491.         } else {

  492.             ptr[i] = s->sc.obmc_scratchpad + 8 * (i & 1) +

  493.                      s->linesize * 8 * (i >> 1);

  494.             hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,

  495.                         mv[i][0], mv[i][1]);

  496.         }

  497.     }

  498. 

  499.     put_obmc(dest, ptr, s->linesize);

  500. }

  501. 

  502. static inline void qpel_motion(MpegEncContext *s,

  503.                                uint8_t *dest_y,

  504.                                uint8_t *dest_cb,

  505.                                uint8_t *dest_cr,

  506.                                int field_based, int bottom_field,

  507.                                int field_select, uint8_t **ref_picture,

  508.                                op_pixels_func (*pix_op)[4],

  509.                                qpel_mc_func (*qpix_op)[16],

  510.                                int motion_x, int motion_y, int h)

  511. {

  512.     uint8_t *ptr_y, *ptr_cb, *ptr_cr;

  513.     int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos;

  514.     ptrdiff_t linesize, uvlinesize;

  515. 

  516.     dxy   = ((motion_y & 3) << 2) | (motion_x & 3);

  517. 

  518.     src_x = s->mb_x *  16                 + (motion_x >> 2);

  519.     src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);

  520. 

  521.     v_edge_pos = s->v_edge_pos >> field_based;

  522.     linesize   = s->linesize   << field_based;

  523.     uvlinesize = s->uvlinesize << field_based;

  524. 

  525.     if (field_based) {

  526.         mx = motion_x / 2;

  527.         my = motion_y >> 1;

  528.     } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) {

  529.         static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 };

  530.         mx = (motion_x >> 1) + rtab[motion_x & 7];

  531.         my = (motion_y >> 1) + rtab[motion_y & 7];

  532.     } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) {

  533.         mx = (motion_x >> 1) | (motion_x & 1);

  534.         my = (motion_y >> 1) | (motion_y & 1);

  535.     } else {

  536.         mx = motion_x / 2;

  537.         my = motion_y / 2;

  538.     }

  539.     mx = (mx >> 1) | (mx & 1);

  540.     my = (my >> 1) | (my & 1);

  541. 

  542.     uvdxy = (mx & 1) | ((my & 1) << 1);

  543.     mx  >>= 1;

  544.     my  >>= 1;

  545. 

  546.     uvsrc_x = s->mb_x *  8                 + mx;

  547.     uvsrc_y = s->mb_y * (8 >> field_based) + my;

  548. 

  549.     ptr_y  = ref_picture[0] + src_y   * linesize   + src_x;

  550.     ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;

  551.     ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;

  552. 

  553.     if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 16, 0) ||

  554.         (unsigned)src_y > FFMAX(v_edge_pos - (motion_y & 3) - h, 0)) {

  555.         emulated_edge_mc(s, src_x, src_y, uvsrc_x, uvsrc_y, field_based,

  556.                          &ptr_y, &ptr_cb, &ptr_cr);

  557.     }

  558. 

  559.     if (!field_based)

  560.         qpix_op[0][dxy](dest_y, ptr_y, linesize);

  561.     else {

  562.         if (bottom_field) {

  563.             dest_y  += s->linesize;

  564.             dest_cb += s->uvlinesize;

  565.             dest_cr += s->uvlinesize;

  566.         }

  567. 

  568.         if (field_select) {

  569.             ptr_y  += s->linesize;

  570.             ptr_cb += s->uvlinesize;

  571.             ptr_cr += s->uvlinesize;

  572.         }

  573.         // damn interlaced mode

  574.         // FIXME boundary mirroring is not exactly correct here

  575.         qpix_op[1][dxy](dest_y, ptr_y, linesize);

  576.         qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize);

  577.     }

  578.     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) {

  579.         pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);

  580.         pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);

  581.     }

  582. }

  583. 

  584. /**

  585.  * H.263 chroma 4mv motion compensation.

  586.  */

  587. static void chroma_4mv_motion(MpegEncContext *s,

  588.                               uint8_t *dest_cb, uint8_t *dest_cr,

  589.                               uint8_t **ref_picture,

  590.                               op_pixels_func *pix_op,

  591.                               int mx, int my)

  592. {

  593.     uint8_t *ptr;

  594.     int src_x, src_y, dxy, emu = 0;

  595.     ptrdiff_t offset;

  596. 

  597.     /* In case of 8X8, we construct a single chroma motion vector

  598.      * with a special rounding */

  599.     mx = ff_h263_round_chroma(mx);

  600.     my = ff_h263_round_chroma(my);

  601. 

  602.     dxy  = ((my & 1) << 1) | (mx & 1);

  603.     mx >>= 1;

  604.     my >>= 1;

  605. 

  606.     src_x = s->mb_x * 8 + mx;

  607.     src_y = s->mb_y * 8 + my;

  608.     src_x = av_clip(src_x, -8, (s->width >> 1));

  609.     if (src_x == (s->width >> 1))

  610.         dxy &= ~1;

  611.     src_y = av_clip(src_y, -8, (s->height >> 1));

  612.     if (src_y == (s->height >> 1))

  613.         dxy &= ~2;

  614. 

  615.     offset = src_y * s->uvlinesize + src_x;

  616.     ptr    = ref_picture[1] + offset;

  617.     if ((unsigned)src_x > FFMAX((s->h_edge_pos >> 1) - (dxy & 1) - 8, 0) ||

  618.         (unsigned)src_y > FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 8, 0)) {

  619.         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  620.                                  s->uvlinesize, s->uvlinesize,

  621.                                  9, 9, src_x, src_y,

  622.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  623.         ptr = s->sc.edge_emu_buffer;

  624.         emu = 1;

  625.     }

  626.     pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);

  627. 

  628.     ptr = ref_picture[2] + offset;

  629.     if (emu) {

  630.         s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  631.                                  s->uvlinesize, s->uvlinesize,

  632.                                  9, 9, src_x, src_y,

  633.                                  s->h_edge_pos >> 1, s->v_edge_pos >> 1);

  634.         ptr = s->sc.edge_emu_buffer;

  635.     }

  636.     pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);

  637. }

  638. 

  639. static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir)

  640. {

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

  642.      * optimized for 64byte cache lines */

  643.     const int shift = s->quarter_sample ? 2 : 1;

  644.     const int mx    = (s->mv[dir][0][0] >> shift) + 16 * s->mb_x + 8;

  645.     const int my    = (s->mv[dir][0][1] >> shift) + 16 * s->mb_y;

  646.     int off         = mx + (my + (s->mb_x & 3) * 4) * s->linesize + 64;

  647. 

  648.     s->vdsp.prefetch(pix[0] + off, s->linesize, 4);

  649.     off = (mx >> 1) + ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize + 64;

  650.     s->vdsp.prefetch(pix[1] + off, pix[2] - pix[1], 2);

  651. }

  652. 

  653. static inline void apply_obmc(MpegEncContext *s,

  654.                               uint8_t *dest_y,

  655.                               uint8_t *dest_cb,

  656.                               uint8_t *dest_cr,

  657.                               uint8_t **ref_picture,

  658.                               op_pixels_func (*pix_op)[4])

  659. {

  660.     LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);

  661.     Picture *cur_frame   = &s->current_picture;

  662.     int mb_x = s->mb_x;

  663.     int mb_y = s->mb_y;

  664.     const int xy         = mb_x + mb_y * s->mb_stride;

  665.     const int mot_stride = s->b8_stride;

  666.     const int mot_xy     = mb_x * 2 + mb_y * 2 * mot_stride;

  667.     int mx, my, i;

  668. 

  669.     assert(!s->mb_skipped);

  670. 

  671.     AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy]);

  672.     AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);

  673. 

  674.     AV_COPY32(mv_cache[2][1],

  675.               cur_frame->motion_val[0][mot_xy + mot_stride]);

  676.     AV_COPY32(mv_cache[2][2],

  677.               cur_frame->motion_val[0][mot_xy + mot_stride + 1]);

  678. 

  679.     AV_COPY32(mv_cache[3][1],

  680.               cur_frame->motion_val[0][mot_xy + mot_stride]);

  681.     AV_COPY32(mv_cache[3][2],

  682.               cur_frame->motion_val[0][mot_xy + mot_stride + 1]);

  683. 

  684.     if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {

  685.         AV_COPY32(mv_cache[0][1], mv_cache[1][1]);

  686.         AV_COPY32(mv_cache[0][2], mv_cache[1][2]);

  687.     } else {

  688.         AV_COPY32(mv_cache[0][1],

  689.                   cur_frame->motion_val[0][mot_xy - mot_stride]);

  690.         AV_COPY32(mv_cache[0][2],

  691.                   cur_frame->motion_val[0][mot_xy - mot_stride + 1]);

  692.     }

  693. 

  694.     if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {

  695.         AV_COPY32(mv_cache[1][0], mv_cache[1][1]);

  696.         AV_COPY32(mv_cache[2][0], mv_cache[2][1]);

  697.     } else {

  698.         AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);

  699.         AV_COPY32(mv_cache[2][0],

  700.                   cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);

  701.     }

  702. 

  703.     if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {

  704.         AV_COPY32(mv_cache[1][3], mv_cache[1][2]);

  705.         AV_COPY32(mv_cache[2][3], mv_cache[2][2]);

  706.     } else {

  707.         AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);

  708.         AV_COPY32(mv_cache[2][3],

  709.                   cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);

  710.     }

  711. 

  712.     mx = 0;

  713.     my = 0;

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

  715.         const int x      = (i & 1) + 1;

  716.         const int y      = (i >> 1) + 1;

  717.         int16_t mv[5][2] = {

  718.             { mv_cache[y][x][0],     mv_cache[y][x][1]         },

  719.             { mv_cache[y - 1][x][0], mv_cache[y - 1][x][1]     },

  720.             { mv_cache[y][x - 1][0], mv_cache[y][x - 1][1]     },

  721.             { mv_cache[y][x + 1][0], mv_cache[y][x + 1][1]     },

  722.             { mv_cache[y + 1][x][0], mv_cache[y + 1][x][1]     }

  723.         };

  724.         // FIXME cleanup

  725.         obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,

  726.                     ref_picture[0],

  727.                     mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >> 1) * 8,

  728.                     pix_op[1],

  729.                     mv);

  730. 

  731.         mx += mv[0][0];

  732.         my += mv[0][1];

  733.     }

  734.     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))

  735.         chroma_4mv_motion(s, dest_cb, dest_cr,

  736.                           ref_picture, pix_op[1],

  737.                           mx, my);

  738. }

  739. 

  740. static inline void apply_8x8(MpegEncContext *s,

  741.                              uint8_t *dest_y,

  742.                              uint8_t *dest_cb,

  743.                              uint8_t *dest_cr,

  744.                              int dir,

  745.                              uint8_t **ref_picture,

  746.                              qpel_mc_func (*qpix_op)[16],

  747.                              op_pixels_func (*pix_op)[4])

  748. {

  749.     int dxy, mx, my, src_x, src_y;

  750.     int i;

  751.     int mb_x = s->mb_x;

  752.     int mb_y = s->mb_y;

  753.     uint8_t *ptr, *dest;

  754. 

  755.     mx = 0;

  756.     my = 0;

  757.     if (s->quarter_sample) {

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

  759.             int motion_x = s->mv[dir][i][0];

  760.             int motion_y = s->mv[dir][i][1];

  761. 

  762.             dxy   = ((motion_y & 3) << 2) | (motion_x & 3);

  763.             src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;

  764.             src_y = mb_y * 16 + (motion_y >> 2) + (i >> 1) * 8;

  765. 

  766.             /* WARNING: do no forget half pels */

  767.             src_x = av_clip(src_x, -16, s->width);

  768.             if (src_x == s->width)

  769.                 dxy &= ~3;

  770.             src_y = av_clip(src_y, -16, s->height);

  771.             if (src_y == s->height)

  772.                 dxy &= ~12;

  773. 

  774.             ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);

  775.             if ((unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x & 3) - 8, 0) ||

  776.                 (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y & 3) - 8, 0)) {

  777.                 s->vdsp.emulated_edge_mc(s->sc.edge_emu_buffer, ptr,

  778.                                          s->linesize, s->linesize,

  779.                                          9, 9,

  780.                                          src_x, src_y,

  781.                                          s->h_edge_pos,

  782.                                          s->v_edge_pos);

  783.                 ptr = s->sc.edge_emu_buffer;

  784.             }

  785.             dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;

  786.             qpix_op[1][dxy](dest, ptr, s->linesize);

  787. 

  788.             mx += s->mv[dir][i][0] / 2;

  789.             my += s->mv[dir][i][1] / 2;

  790.         }

  791.     } else {

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

  793.             hpel_motion(s,

  794.                         dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,

  795.                         ref_picture[0],

  796.                         mb_x * 16 + (i & 1) * 8,

  797.                         mb_y * 16 + (i >> 1) * 8,

  798.                         pix_op[1],

  799.                         s->mv[dir][i][0],

  800.                         s->mv[dir][i][1]);

  801. 

  802.             mx += s->mv[dir][i][0];

  803.             my += s->mv[dir][i][1];

  804.         }

  805.     }

  806. 

  807.     if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY))

  808.         chroma_4mv_motion(s, dest_cb, dest_cr,

  809.                           ref_picture, pix_op[1], mx, my);

  810. }

  811. 

  812. /**

  813.  * motion compensation of a single macroblock

  814.  * @param s context

  815.  * @param dest_y luma destination pointer

  816.  * @param dest_cb chroma cb/u destination pointer

  817.  * @param dest_cr chroma cr/v destination pointer

  818.  * @param dir direction (0->forward, 1->backward)

  819.  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture

  820.  * @param pix_op halfpel motion compensation function (average or put normally)

  821.  * @param qpix_op qpel motion compensation function (average or put normally)

  822.  * the motion vectors are taken from s->mv and the MV type from s->mv_type

  823.  */

  824. static av_always_inline void mpv_motion_internal(MpegEncContext *s,

  825.                                                  uint8_t *dest_y,

  826.                                                  uint8_t *dest_cb,

  827.                                                  uint8_t *dest_cr,

  828.                                                  int dir,

  829.                                                  uint8_t **ref_picture,

  830.                                                  op_pixels_func (*pix_op)[4],

  831.                                                  qpel_mc_func (*qpix_op)[16],

  832.                                                  int is_mpeg12)

  833. {

  834.     int i;

  835.     int mb_y = s->mb_y;

  836. 

  837.     prefetch_motion(s, ref_picture, dir);

  838. 

  839.     if (!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B) {

  840.         apply_obmc(s, dest_y, dest_cb, dest_cr, ref_picture, pix_op);

  841.         return;

  842.     }

  843. 

  844.     switch (s->mv_type) {

  845.     case MV_TYPE_16X16:

  846.         if (s->mcsel) {

  847.             if (s->real_sprite_warping_points == 1) {

  848.                 gmc1_motion(s, dest_y, dest_cb, dest_cr,

  849.                             ref_picture);

  850.             } else {

  851.                 gmc_motion(s, dest_y, dest_cb, dest_cr,

  852.                            ref_picture);

  853.             }

  854.         } else if (!is_mpeg12 && s->quarter_sample) {

  855.             qpel_motion(s, dest_y, dest_cb, dest_cr,

  856.                         0, 0, 0,

  857.                         ref_picture, pix_op, qpix_op,

  858.                         s->mv[dir][0][0], s->mv[dir][0][1], 16);

  859.         } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&

  860.                    s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {

  861.             ff_mspel_motion(s, dest_y, dest_cb, dest_cr,

  862.                             ref_picture, pix_op,

  863.                             s->mv[dir][0][0], s->mv[dir][0][1], 16);

  864.         } else {

  865.             mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,

  866.                         ref_picture, pix_op,

  867.                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);

  868.         }

  869.         break;

  870.     case MV_TYPE_8X8:

  871.         if (!is_mpeg12)

  872.             apply_8x8(s, dest_y, dest_cb, dest_cr,

  873.                       dir, ref_picture, qpix_op, pix_op);

  874.         break;

  875.     case MV_TYPE_FIELD:

  876.         if (s->picture_structure == PICT_FRAME) {

  877.             if (!is_mpeg12 && s->quarter_sample) {

  878.                 for (i = 0; i < 2; i++)

  879.                     qpel_motion(s, dest_y, dest_cb, dest_cr,

  880.                                 1, i, s->field_select[dir][i],

  881.                                 ref_picture, pix_op, qpix_op,

  882.                                 s->mv[dir][i][0], s->mv[dir][i][1], 8);

  883.             } else {

  884.                 /* top field */

  885.                 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,

  886.                                   0, s->field_select[dir][0],

  887.                                   ref_picture, pix_op,

  888.                                   s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);

  889.                 /* bottom field */

  890.                 mpeg_motion_field(s, dest_y, dest_cb, dest_cr,

  891.                                   1, s->field_select[dir][1],

  892.                                   ref_picture, pix_op,

  893.                                   s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);

  894.             }

  895.         } else {

  896.             if (s->picture_structure != s->field_select[dir][0] + 1 &&

  897.                 s->pict_type != AV_PICTURE_TYPE_B && !s->first_field) {

  898.                 ref_picture = s->current_picture_ptr->f->data;

  899.             }

  900. 

  901.             mpeg_motion(s, dest_y, dest_cb, dest_cr,

  902.                         s->field_select[dir][0],

  903.                         ref_picture, pix_op,

  904.                         s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y >> 1);

  905.         }

  906.         break;

  907.     case MV_TYPE_16X8:

  908.         for (i = 0; i < 2; i++) {

  909.             uint8_t **ref2picture;

  910. 

  911.             if (s->picture_structure == s->field_select[dir][i] + 1

  912.                 || s->pict_type == AV_PICTURE_TYPE_B || s->first_field) {

  913.                 ref2picture = ref_picture;

  914.             } else {

  915.                 ref2picture = s->current_picture_ptr->f->data;

  916.             }

  917. 

  918.             mpeg_motion(s, dest_y, dest_cb, dest_cr,

  919.                         s->field_select[dir][i],

  920.                         ref2picture, pix_op,

  921.                         s->mv[dir][i][0], s->mv[dir][i][1] + 16 * i,

  922.                         8, mb_y >> 1);

  923. 

  924.             dest_y  += 16 * s->linesize;

  925.             dest_cb += (16 >> s->chroma_y_shift) * s->uvlinesize;

  926.             dest_cr += (16 >> s->chroma_y_shift) * s->uvlinesize;

  927.         }

  928.         break;

  929.     case MV_TYPE_DMV:

  930.         if (s->picture_structure == PICT_FRAME) {

  931.             for (i = 0; i < 2; i++) {

  932.                 int j;

  933.                 for (j = 0; j < 2; j++)

  934.                     mpeg_motion_field(s, dest_y, dest_cb, dest_cr,

  935.                                       j, j ^ i, ref_picture, pix_op,

  936.                                       s->mv[dir][2 * i + j][0],

  937.                                       s->mv[dir][2 * i + j][1], 8, mb_y);

  938.                 pix_op = s->hdsp.avg_pixels_tab;

  939.             }

  940.         } else {

  941.             for (i = 0; i < 2; i++) {

  942.                 mpeg_motion(s, dest_y, dest_cb, dest_cr,

  943.                             s->picture_structure != i + 1,

  944.                             ref_picture, pix_op,

  945.                             s->mv[dir][2 * i][0], s->mv[dir][2 * i][1],

  946.                             16, mb_y >> 1);

  947. 

  948.                 // after put we make avg of the same block

  949.                 pix_op = s->hdsp.avg_pixels_tab;

  950. 

  951.                 /* opposite parity is always in the same frame if this is

  952.                  * second field */

  953.                 if (!s->first_field) {

  954.                     ref_picture = s->current_picture_ptr->f->data;

  955.                 }

  956.             }

  957.         }

  958.         break;

  959.     default: assert(0);

  960.     }

  961. }

  962. 

  963. void ff_mpv_motion(MpegEncContext *s,

  964.                    uint8_t *dest_y, uint8_t *dest_cb,

  965.                    uint8_t *dest_cr, int dir,

  966.                    uint8_t **ref_picture,

  967.                    op_pixels_func (*pix_op)[4],

  968.                    qpel_mc_func (*qpix_op)[16])

  969. {

  970. #if !CONFIG_SMALL

  971.     if (s->out_format == FMT_MPEG1)

  972.         mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,

  973.                             ref_picture, pix_op, qpix_op, 1);

  974.     else

  975. #endif

  976.         mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,

  977.                             ref_picture, pix_op, qpix_op, 0);

  978. }