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

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

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

  216.                                  s->linesize, s->linesize,

  217.                                  9, 9, src_x, src_y,

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

  219.         src = s->sc.edge_emu_buffer;

  220.         emu = 1;

  221.     }

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

  223.     return emu;

  224. }

  225. 

  226. static av_always_inline

  227. void emulated_edge_mc(MpegEncContext *s,

  228.                       int src_x, int src_y,

  229.                       int uvsrc_x, int uvsrc_y,

  230.                       int field_based,

  231.                       uint8_t **ptr_y,

  232.                       uint8_t **ptr_cb,

  233.                       uint8_t **ptr_cr)

  234. {

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

  236.                              s->linesize, s->linesize,

  237.                              17, 17 + field_based,

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

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

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

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

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

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

  244.                                  s->uvlinesize, s->uvlinesize,

  245.                                  9, 9 + field_based,

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

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

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

  249.                                  s->uvlinesize, s->uvlinesize,

  250.                                  9, 9 + field_based,

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

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

  253.         *ptr_cb = uvbuf;

  254.         *ptr_cr = uvbuf + 16;

  255.     }

  256. }

  257. 

  258. static av_always_inline

  259. void mpeg_motion_internal(MpegEncContext *s,

  260.                           uint8_t *dest_y,

  261.                           uint8_t *dest_cb,

  262.                           uint8_t *dest_cr,

  263.                           int field_based,

  264.                           int bottom_field,

  265.                           int field_select,

  266.                           uint8_t **ref_picture,

  267.                           op_pixels_func (*pix_op)[4],

  268.                           int motion_x,

  269.                           int motion_y,

  270.                           int h,

  271.                           int is_mpeg12,

  272.                           int mb_y)

  273. {

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

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

  276.         uvsrc_x, uvsrc_y, v_edge_pos;

  277.     ptrdiff_t uvlinesize, linesize;

  278. 

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

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

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

  282. 

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

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

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

  286. 

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

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

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

  290.             my      = motion_y >> 1;

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

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

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

  294.         } else {

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

  296.             uvsrc_x = src_x >> 1;

  297.             uvsrc_y = src_y >> 1;

  298.         }

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

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

  301.         mx      = motion_x / 4;

  302.         my      = motion_y / 4;

  303.         uvdxy   = 0;

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

  305.         uvsrc_y = mb_y * 8 + my;

  306.     } else {

  307.         if (s->chroma_y_shift) {

  308.             mx      = motion_x / 2;

  309.             my      = motion_y / 2;

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

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

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

  313.         } else {

  314.             if (s->chroma_x_shift) {

  315.                 // Chroma422

  316.                 mx      = motion_x / 2;

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

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

  319.                 uvsrc_y = src_y;

  320.             } else {

  321.                 // Chroma444

  322.                 uvdxy   = dxy;

  323.                 uvsrc_x = src_x;

  324.                 uvsrc_y = src_y;

  325.             }

  326.         }

  327.     }

  328. 

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

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

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

  332. 

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

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

  335.         if (is_mpeg12 ||

  336.             s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||

  337.             s->codec_id == AV_CODEC_ID_MPEG1VIDEO) {

  338.             av_log(s->avctx, AV_LOG_DEBUG,

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

  340.                    src_y);

  341.             return;

  342.         }

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

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

  345.     }

  346. 

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

  348.      * changes picture.data */

  349.     if (bottom_field) {

  350.         dest_y  += s->linesize;

  351.         dest_cb += s->uvlinesize;

  352.         dest_cr += s->uvlinesize;

  353.     }

  354. 

  355.     if (field_select) {

  356.         ptr_y  += s->linesize;

  357.         ptr_cb += s->uvlinesize;

  358.         ptr_cr += s->uvlinesize;

  359.     }

  360. 

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

  362. 

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

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

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

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

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

  368.     }

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

  370.         s->out_format == FMT_H261) {

  371.         ff_h261_loop_filter(s);

  372.     }

  373. }

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

  375. static void mpeg_motion(MpegEncContext *s,

  376.                         uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,

  377.                         int field_select, uint8_t **ref_picture,

  378.                         op_pixels_func (*pix_op)[4],

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

  380. {

  381. #if !CONFIG_SMALL

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

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

  384.                              field_select, ref_picture, pix_op,

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

  386.     else

  387. #endif

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

  389.                              field_select, ref_picture, pix_op,

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

  391. }

  392. 

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

  394.                               uint8_t *dest_cb, uint8_t *dest_cr,

  395.                               int bottom_field, int field_select,

  396.                               uint8_t **ref_picture,

  397.                               op_pixels_func (*pix_op)[4],

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

  399. {

  400. #if !CONFIG_SMALL

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

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

  403.                              bottom_field, field_select, ref_picture, pix_op,

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

  405.     else

  406. #endif

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

  408.                              bottom_field, field_select, ref_picture, pix_op,

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

  410. }

  411. 

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

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

  414. {

  415.     int x;

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

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

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

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

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

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

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

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

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

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

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

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

  428. 

  429.     x = 0;

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

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

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

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

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

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

  436.     x += stride;

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

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

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

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

  441.     x += stride;

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

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

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

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

  446.     x += 2 * stride;

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

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

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

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

  451.     x += 2*stride;

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

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

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

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

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

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

  458.     x += stride;

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

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

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

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

  463. }

  464. 

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

  466. static inline void obmc_motion(MpegEncContext *s,

  467.                                uint8_t *dest, uint8_t *src,

  468.                                int src_x, int src_y,

  469.                                op_pixels_func *pix_op,

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

  471. #define MID    0

  472. {

  473.     int i;

  474.     uint8_t *ptr[5];

  475. 

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

  477. 

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

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

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

  481.         } else {

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

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

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

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

  486.         }

  487.     }

  488. 

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

  490. }

  491. 

  492. static inline void qpel_motion(MpegEncContext *s,

  493.                                uint8_t *dest_y,

  494.                                uint8_t *dest_cb,

  495.                                uint8_t *dest_cr,

  496.                                int field_based, int bottom_field,

  497.                                int field_select, uint8_t **ref_picture,

  498.                                op_pixels_func (*pix_op)[4],

  499.                                qpel_mc_func (*qpix_op)[16],

  500.                                int motion_x, int motion_y, int h)

  501. {

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

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

  504.     ptrdiff_t linesize, uvlinesize;

  505. 

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

  507. 

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

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

  510. 

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

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

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

  514. 

  515.     if (field_based) {

  516.         mx = motion_x / 2;

  517.         my = motion_y >> 1;

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

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

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

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

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

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

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

  525.     } else {

  526.         mx = motion_x / 2;

  527.         my = motion_y / 2;

  528.     }

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

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

  531. 

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

  533.     mx  >>= 1;

  534.     my  >>= 1;

  535. 

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

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

  538. 

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

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

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

  542. 

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

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

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

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

  547.     }

  548. 

  549.     if (!field_based)

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

  551.     else {

  552.         if (bottom_field) {

  553.             dest_y  += s->linesize;

  554.             dest_cb += s->uvlinesize;

  555.             dest_cr += s->uvlinesize;

  556.         }

  557. 

  558.         if (field_select) {

  559.             ptr_y  += s->linesize;

  560.             ptr_cb += s->uvlinesize;

  561.             ptr_cr += s->uvlinesize;

  562.         }

  563.         // damn interlaced mode

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

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

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

  567.     }

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

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

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

  571.     }

  572. }

  573. 

  574. /**

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

  576.  */

  577. static void chroma_4mv_motion(MpegEncContext *s,

  578.                               uint8_t *dest_cb, uint8_t *dest_cr,

  579.                               uint8_t **ref_picture,

  580.                               op_pixels_func *pix_op,

  581.                               int mx, int my)

  582. {

  583.     uint8_t *ptr;

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

  585.     ptrdiff_t offset;

  586. 

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

  588.      * with a special rounding */

  589.     mx = ff_h263_round_chroma(mx);

  590.     my = ff_h263_round_chroma(my);

  591. 

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

  593.     mx >>= 1;

  594.     my >>= 1;

  595. 

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

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

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

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

  600.         dxy &= ~1;

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

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

  603.         dxy &= ~2;

  604. 

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

  606.     ptr    = ref_picture[1] + offset;

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

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

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

  610.                                  s->uvlinesize, s->uvlinesize,

  611.                                  9, 9, src_x, src_y,

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

  613.         ptr = s->sc.edge_emu_buffer;

  614.         emu = 1;

  615.     }

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

  617. 

  618.     ptr = ref_picture[2] + offset;

  619.     if (emu) {

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

  621.                                  s->uvlinesize, s->uvlinesize,

  622.                                  9, 9, src_x, src_y,

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

  624.         ptr = s->sc.edge_emu_buffer;

  625.     }

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

  627. }

  628. 

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

  630. {

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

  632.      * optimized for 64byte cache lines */

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

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

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

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

  637. 

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

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

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

  641. }

  642. 

  643. static inline void apply_obmc(MpegEncContext *s,

  644.                               uint8_t *dest_y,

  645.                               uint8_t *dest_cb,

  646.                               uint8_t *dest_cr,

  647.                               uint8_t **ref_picture,

  648.                               op_pixels_func (*pix_op)[4])

  649. {

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

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

  652.     int mb_x = s->mb_x;

  653.     int mb_y = s->mb_y;

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

  655.     const int mot_stride = s->b8_stride;

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

  657.     int mx, my, i;

  658. 

  659.     assert(!s->mb_skipped);

  660. 

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

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

  663. 

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

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

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

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

  668. 

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

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

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

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

  673. 

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

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

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

  677.     } else {

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

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

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

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

  682.     }

  683. 

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

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

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

  687.     } else {

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

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

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

  691.     }

  692. 

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

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

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

  696.     } else {

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

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

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

  700.     }

  701. 

  702.     mx = 0;

  703.     my = 0;

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

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

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

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

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

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

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

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

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

  713.         };

  714.         // FIXME cleanup

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

  716.                     ref_picture[0],

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

  718.                     pix_op[1],

  719.                     mv);

  720. 

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

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

  723.     }

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

  725.         chroma_4mv_motion(s, dest_cb, dest_cr,

  726.                           ref_picture, pix_op[1],

  727.                           mx, my);

  728. }

  729. 

  730. static inline void apply_8x8(MpegEncContext *s,

  731.                              uint8_t *dest_y,

  732.                              uint8_t *dest_cb,

  733.                              uint8_t *dest_cr,

  734.                              int dir,

  735.                              uint8_t **ref_picture,

  736.                              qpel_mc_func (*qpix_op)[16],

  737.                              op_pixels_func (*pix_op)[4])

  738. {

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

  740.     int i;

  741.     int mb_x = s->mb_x;

  742.     int mb_y = s->mb_y;

  743.     uint8_t *ptr, *dest;

  744. 

  745.     mx = 0;

  746.     my = 0;

  747.     if (s->quarter_sample) {

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

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

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

  751. 

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

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

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

  755. 

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

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

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

  759.                 dxy &= ~3;

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

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

  762.                 dxy &= ~12;

  763. 

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

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

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

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

  768.                                          s->linesize, s->linesize,

  769.                                          9, 9,

  770.                                          src_x, src_y,

  771.                                          s->h_edge_pos,

  772.                                          s->v_edge_pos);

  773.                 ptr = s->sc.edge_emu_buffer;

  774.             }

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

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

  777. 

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

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

  780.         }

  781.     } else {

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

  783.             hpel_motion(s,

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

  785.                         ref_picture[0],

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

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

  788.                         pix_op[1],

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

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

  791. 

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

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

  794.         }

  795.     }

  796. 

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

  798.         chroma_4mv_motion(s, dest_cb, dest_cr,

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

  800. }

  801. 

  802. /**

  803.  * motion compensation of a single macroblock

  804.  * @param s context

  805.  * @param dest_y luma destination pointer

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

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

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

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

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

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

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

  813.  */

  814. static av_always_inline void mpv_motion_internal(MpegEncContext *s,

  815.                                                  uint8_t *dest_y,

  816.                                                  uint8_t *dest_cb,

  817.                                                  uint8_t *dest_cr,

  818.                                                  int dir,

  819.                                                  uint8_t **ref_picture,

  820.                                                  op_pixels_func (*pix_op)[4],

  821.                                                  qpel_mc_func (*qpix_op)[16],

  822.                                                  int is_mpeg12)

  823. {

  824.     int i;

  825.     int mb_y = s->mb_y;

  826. 

  827.     prefetch_motion(s, ref_picture, dir);

  828. 

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

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

  831.         return;

  832.     }

  833. 

  834.     switch (s->mv_type) {

  835.     case MV_TYPE_16X16:

  836.         if (s->mcsel) {

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

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

  839.                             ref_picture);

  840.             } else {

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

  842.                            ref_picture);

  843.             }

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

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

  846.                         0, 0, 0,

  847.                         ref_picture, pix_op, qpix_op,

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

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

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

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

  852.                             ref_picture, pix_op,

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

  854.         } else {

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

  856.                         ref_picture, pix_op,

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

  858.         }

  859.         break;

  860.     case MV_TYPE_8X8:

  861.         if (!is_mpeg12)

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

  863.                       dir, ref_picture, qpix_op, pix_op);

  864.         break;

  865.     case MV_TYPE_FIELD:

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

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

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

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

  870.                                 1, i, s->field_select[dir][i],

  871.                                 ref_picture, pix_op, qpix_op,

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

  873.             } else {

  874.                 /* top field */

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

  876.                                   0, s->field_select[dir][0],

  877.                                   ref_picture, pix_op,

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

  879.                 /* bottom field */

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

  881.                                   1, s->field_select[dir][1],

  882.                                   ref_picture, pix_op,

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

  884.             }

  885.         } else {

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

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

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

  889.             }

  890. 

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

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

  893.                         ref_picture, pix_op,

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

  895.         }

  896.         break;

  897.     case MV_TYPE_16X8:

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

  899.             uint8_t **ref2picture;

  900. 

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

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

  903.                 ref2picture = ref_picture;

  904.             } else {

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

  906.             }

  907. 

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

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

  910.                         ref2picture, pix_op,

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

  912.                         8, mb_y >> 1);

  913. 

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

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

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

  917.         }

  918.         break;

  919.     case MV_TYPE_DMV:

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

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

  922.                 int j;

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

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

  925.                                       j, j ^ i, ref_picture, pix_op,

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

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

  928.                 pix_op = s->hdsp.avg_pixels_tab;

  929.             }

  930.         } else {

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

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

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

  934.                             ref_picture, pix_op,

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

  936.                             16, mb_y >> 1);

  937. 

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

  939.                 pix_op = s->hdsp.avg_pixels_tab;

  940. 

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

  942.                  * second field */

  943.                 if (!s->first_field) {

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

  945.                 }

  946.             }

  947.         }

  948.         break;

  949.     default: assert(0);

  950.     }

  951. }

  952. 

  953. void ff_mpv_motion(MpegEncContext *s,

  954.                    uint8_t *dest_y, uint8_t *dest_cb,

  955.                    uint8_t *dest_cr, int dir,

  956.                    uint8_t **ref_picture,

  957.                    op_pixels_func (*pix_op)[4],

  958.                    qpel_mc_func (*qpix_op)[16])

  959. {

  960. #if !CONFIG_SMALL

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

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

  963.                             ref_picture, pix_op, qpix_op, 1);

  964.     else

  965. #endif

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

  967.                             ref_picture, pix_op, qpix_op, 0);

  968. }