FFmpeg
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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 FFmpeg.
8  *
9  * FFmpeg 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  * FFmpeg 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 FFmpeg; 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/avassert.h"
27 #include "libavutil/internal.h"
28 #include "avcodec.h"
29 #include "h261.h"
30 #include "mpegutils.h"
31 #include "mpegvideo.h"
32 #include "mjpegenc.h"
33 #include "msmpeg4.h"
34 #include "qpeldsp.h"
35 #include <limits.h>
36 
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)) {
67  linesize, linesize,
68  17, 17,
69  src_x, src_y,
70  s->h_edge_pos, s->v_edge_pos);
71  ptr = s->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->flags & 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)) {
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->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) {
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->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 
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->flags & 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) >> 1, (s->v_edge_pos + 1) >> 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) >> 1, (s->v_edge_pos + 1) >> 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) - 7, 0) ||
214  (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 1) - 7, 0)) {
216  s->linesize, s->linesize,
217  9, 9,
218  src_x, src_y,
219  s->h_edge_pos, s->v_edge_pos);
220  src = s->edge_emu_buffer;
221  emu = 1;
222  }
223  pix_op[dxy](dest, src, s->linesize, 8);
224  return emu;
225 }
226 
227 static av_always_inline
229  uint8_t *dest_y,
230  uint8_t *dest_cb,
231  uint8_t *dest_cr,
232  int field_based,
233  int bottom_field,
234  int field_select,
235  uint8_t **ref_picture,
236  op_pixels_func (*pix_op)[4],
237  int motion_x,
238  int motion_y,
239  int h,
240  int is_mpeg12,
241  int mb_y)
242 {
243  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
244  int dxy, uvdxy, mx, my, src_x, src_y,
245  uvsrc_x, uvsrc_y, v_edge_pos;
246  ptrdiff_t uvlinesize, linesize;
247 
248 #if 0
249  if (s->quarter_sample) {
250  motion_x >>= 1;
251  motion_y >>= 1;
252  }
253 #endif
254 
255  v_edge_pos = s->v_edge_pos >> field_based;
256  linesize = s->current_picture.f->linesize[0] << field_based;
257  uvlinesize = s->current_picture.f->linesize[1] << field_based;
258 
259  dxy = ((motion_y & 1) << 1) | (motion_x & 1);
260  src_x = s->mb_x * 16 + (motion_x >> 1);
261  src_y = (mb_y << (4 - field_based)) + (motion_y >> 1);
262 
263  if (!is_mpeg12 && s->out_format == FMT_H263) {
264  if ((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based) {
265  mx = (motion_x >> 1) | (motion_x & 1);
266  my = motion_y >> 1;
267  uvdxy = ((my & 1) << 1) | (mx & 1);
268  uvsrc_x = s->mb_x * 8 + (mx >> 1);
269  uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
270  } else {
271  uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
272  uvsrc_x = src_x >> 1;
273  uvsrc_y = src_y >> 1;
274  }
275  // Even chroma mv's are full pel in H261
276  } else if (!is_mpeg12 && s->out_format == FMT_H261) {
277  mx = motion_x / 4;
278  my = motion_y / 4;
279  uvdxy = 0;
280  uvsrc_x = s->mb_x * 8 + mx;
281  uvsrc_y = mb_y * 8 + my;
282  } else {
283  if (s->chroma_y_shift) {
284  mx = motion_x / 2;
285  my = motion_y / 2;
286  uvdxy = ((my & 1) << 1) | (mx & 1);
287  uvsrc_x = s->mb_x * 8 + (mx >> 1);
288  uvsrc_y = (mb_y << (3 - field_based)) + (my >> 1);
289  } else {
290  if (s->chroma_x_shift) {
291  // Chroma422
292  mx = motion_x / 2;
293  uvdxy = ((motion_y & 1) << 1) | (mx & 1);
294  uvsrc_x = s->mb_x * 8 + (mx >> 1);
295  uvsrc_y = src_y;
296  } else {
297  // Chroma444
298  uvdxy = dxy;
299  uvsrc_x = src_x;
300  uvsrc_y = src_y;
301  }
302  }
303  }
304 
305  ptr_y = ref_picture[0] + src_y * linesize + src_x;
306  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
307  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
308 
309  if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 1) - 15 , 0) ||
310  (unsigned)src_y >= FFMAX( v_edge_pos - (motion_y & 1) - h + 1, 0)) {
311  if (is_mpeg12 ||
315  "MPEG motion vector out of boundary (%d %d)\n", src_x,
316  src_y);
317  return;
318  }
319  src_y = (unsigned)src_y << field_based;
321  s->linesize, s->linesize,
322  17, 17 + field_based,
323  src_x, src_y,
324  s->h_edge_pos, s->v_edge_pos);
325  ptr_y = s->edge_emu_buffer;
326  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
327  uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
328  uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
329  uvsrc_y = (unsigned)uvsrc_y << field_based;
330  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
331  s->uvlinesize, s->uvlinesize,
332  9, 9 + field_based,
333  uvsrc_x, uvsrc_y,
334  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
335  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
336  s->uvlinesize, s->uvlinesize,
337  9, 9 + field_based,
338  uvsrc_x, uvsrc_y,
339  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
340  ptr_cb = ubuf;
341  ptr_cr = vbuf;
342  }
343  }
344 
345  /* FIXME use this for field pix too instead of the obnoxious hack which
346  * changes picture.data */
347  if (bottom_field) {
348  dest_y += s->linesize;
349  dest_cb += s->uvlinesize;
350  dest_cr += s->uvlinesize;
351  }
352 
353  if (field_select) {
354  ptr_y += s->linesize;
355  ptr_cb += s->uvlinesize;
356  ptr_cr += s->uvlinesize;
357  }
358 
359  pix_op[0][dxy](dest_y, ptr_y, linesize, h);
360 
361  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
362  pix_op[s->chroma_x_shift][uvdxy]
363  (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
364  pix_op[s->chroma_x_shift][uvdxy]
365  (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
366  }
367  if (!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
368  s->out_format == FMT_H261) {
370  }
371 }
372 /* apply one mpeg motion vector to the three components */
374  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
375  int field_select, uint8_t **ref_picture,
376  op_pixels_func (*pix_op)[4],
377  int motion_x, int motion_y, int h, int mb_y)
378 {
379 #if !CONFIG_SMALL
380  if (s->out_format == FMT_MPEG1)
381  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
382  field_select, ref_picture, pix_op,
383  motion_x, motion_y, h, 1, mb_y);
384  else
385 #endif
386  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
387  field_select, ref_picture, pix_op,
388  motion_x, motion_y, h, 0, mb_y);
389 }
390 
391 static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,
392  uint8_t *dest_cb, uint8_t *dest_cr,
393  int bottom_field, int field_select,
394  uint8_t **ref_picture,
395  op_pixels_func (*pix_op)[4],
396  int motion_x, int motion_y, int h, int mb_y)
397 {
398 #if !CONFIG_SMALL
399  if (s->out_format == FMT_MPEG1)
400  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
401  bottom_field, field_select, ref_picture, pix_op,
402  motion_x, motion_y, h, 1, mb_y);
403  else
404 #endif
405  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
406  bottom_field, field_select, ref_picture, pix_op,
407  motion_x, motion_y, h, 0, mb_y);
408 }
409 
410 // FIXME: SIMDify, avg variant, 16x16 version
411 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride)
412 {
413  int x;
414  uint8_t *const top = src[1];
415  uint8_t *const left = src[2];
416  uint8_t *const mid = src[0];
417  uint8_t *const right = src[3];
418  uint8_t *const bottom = src[4];
419 #define OBMC_FILTER(x, t, l, m, r, b)\
420  dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
421 #define OBMC_FILTER4(x, t, l, m, r, b)\
422  OBMC_FILTER(x , t, l, m, r, b);\
423  OBMC_FILTER(x+1 , t, l, m, r, b);\
424  OBMC_FILTER(x +stride, t, l, m, r, b);\
425  OBMC_FILTER(x+1+stride, t, l, m, r, b);
426 
427  x = 0;
428  OBMC_FILTER (x , 2, 2, 4, 0, 0);
429  OBMC_FILTER (x + 1, 2, 1, 5, 0, 0);
430  OBMC_FILTER4(x + 2, 2, 1, 5, 0, 0);
431  OBMC_FILTER4(x + 4, 2, 0, 5, 1, 0);
432  OBMC_FILTER (x + 6, 2, 0, 5, 1, 0);
433  OBMC_FILTER (x + 7, 2, 0, 4, 2, 0);
434  x += stride;
435  OBMC_FILTER (x , 1, 2, 5, 0, 0);
436  OBMC_FILTER (x + 1, 1, 2, 5, 0, 0);
437  OBMC_FILTER (x + 6, 1, 0, 5, 2, 0);
438  OBMC_FILTER (x + 7, 1, 0, 5, 2, 0);
439  x += stride;
440  OBMC_FILTER4(x , 1, 2, 5, 0, 0);
441  OBMC_FILTER4(x + 2, 1, 1, 6, 0, 0);
442  OBMC_FILTER4(x + 4, 1, 0, 6, 1, 0);
443  OBMC_FILTER4(x + 6, 1, 0, 5, 2, 0);
444  x += 2 * stride;
445  OBMC_FILTER4(x , 0, 2, 5, 0, 1);
446  OBMC_FILTER4(x + 2, 0, 1, 6, 0, 1);
447  OBMC_FILTER4(x + 4, 0, 0, 6, 1, 1);
448  OBMC_FILTER4(x + 6, 0, 0, 5, 2, 1);
449  x += 2*stride;
450  OBMC_FILTER (x , 0, 2, 5, 0, 1);
451  OBMC_FILTER (x + 1, 0, 2, 5, 0, 1);
452  OBMC_FILTER4(x + 2, 0, 1, 5, 0, 2);
453  OBMC_FILTER4(x + 4, 0, 0, 5, 1, 2);
454  OBMC_FILTER (x + 6, 0, 0, 5, 2, 1);
455  OBMC_FILTER (x + 7, 0, 0, 5, 2, 1);
456  x += stride;
457  OBMC_FILTER (x , 0, 2, 4, 0, 2);
458  OBMC_FILTER (x + 1, 0, 1, 5, 0, 2);
459  OBMC_FILTER (x + 6, 0, 0, 5, 1, 2);
460  OBMC_FILTER (x + 7, 0, 0, 4, 2, 2);
461 }
462 
463 /* obmc for 1 8x8 luma block */
464 static inline void obmc_motion(MpegEncContext *s,
465  uint8_t *dest, uint8_t *src,
466  int src_x, int src_y,
467  op_pixels_func *pix_op,
468  int16_t mv[5][2] /* mid top left right bottom */)
469 #define MID 0
470 {
471  int i;
472  uint8_t *ptr[5];
473 
474  av_assert2(s->quarter_sample == 0);
475 
476  for (i = 0; i < 5; i++) {
477  if (i && mv[i][0] == mv[MID][0] && mv[i][1] == mv[MID][1]) {
478  ptr[i] = ptr[MID];
479  } else {
480  ptr[i] = s->obmc_scratchpad + 8 * (i & 1) +
481  s->linesize * 8 * (i >> 1);
482  hpel_motion(s, ptr[i], src, src_x, src_y, pix_op,
483  mv[i][0], mv[i][1]);
484  }
485  }
486 
487  put_obmc(dest, ptr, s->linesize);
488 }
489 
490 static inline void qpel_motion(MpegEncContext *s,
491  uint8_t *dest_y,
492  uint8_t *dest_cb,
493  uint8_t *dest_cr,
494  int field_based, int bottom_field,
495  int field_select, uint8_t **ref_picture,
496  op_pixels_func (*pix_op)[4],
497  qpel_mc_func (*qpix_op)[16],
498  int motion_x, int motion_y, int h)
499 {
500  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
501  int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos;
502  ptrdiff_t linesize, uvlinesize;
503 
504  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
505 
506  src_x = s->mb_x * 16 + (motion_x >> 2);
507  src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
508 
509  v_edge_pos = s->v_edge_pos >> field_based;
510  linesize = s->linesize << field_based;
511  uvlinesize = s->uvlinesize << field_based;
512 
513  if (field_based) {
514  mx = motion_x / 2;
515  my = motion_y >> 1;
516  } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA2) {
517  static const int rtab[8] = { 0, 0, 1, 1, 0, 0, 0, 1 };
518  mx = (motion_x >> 1) + rtab[motion_x & 7];
519  my = (motion_y >> 1) + rtab[motion_y & 7];
520  } else if (s->workaround_bugs & FF_BUG_QPEL_CHROMA) {
521  mx = (motion_x >> 1) | (motion_x & 1);
522  my = (motion_y >> 1) | (motion_y & 1);
523  } else {
524  mx = motion_x / 2;
525  my = motion_y / 2;
526  }
527  mx = (mx >> 1) | (mx & 1);
528  my = (my >> 1) | (my & 1);
529 
530  uvdxy = (mx & 1) | ((my & 1) << 1);
531  mx >>= 1;
532  my >>= 1;
533 
534  uvsrc_x = s->mb_x * 8 + mx;
535  uvsrc_y = s->mb_y * (8 >> field_based) + my;
536 
537  ptr_y = ref_picture[0] + src_y * linesize + src_x;
538  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
539  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
540 
541  if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 15 , 0) ||
542  (unsigned)src_y >= FFMAX( v_edge_pos - (motion_y & 3) - h + 1, 0)) {
544  s->linesize, s->linesize,
545  17, 17 + field_based,
546  src_x, src_y << field_based,
547  s->h_edge_pos, s->v_edge_pos);
548  ptr_y = s->edge_emu_buffer;
549  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
550  uint8_t *ubuf = s->edge_emu_buffer + 18 * s->linesize;
551  uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
552  s->vdsp.emulated_edge_mc(ubuf, ptr_cb,
553  s->uvlinesize, s->uvlinesize,
554  9, 9 + field_based,
555  uvsrc_x, uvsrc_y << field_based,
556  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
557  s->vdsp.emulated_edge_mc(vbuf, ptr_cr,
558  s->uvlinesize, s->uvlinesize,
559  9, 9 + field_based,
560  uvsrc_x, uvsrc_y << field_based,
561  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
562  ptr_cb = ubuf;
563  ptr_cr = vbuf;
564  }
565  }
566 
567  if (!field_based)
568  qpix_op[0][dxy](dest_y, ptr_y, linesize);
569  else {
570  if (bottom_field) {
571  dest_y += s->linesize;
572  dest_cb += s->uvlinesize;
573  dest_cr += s->uvlinesize;
574  }
575 
576  if (field_select) {
577  ptr_y += s->linesize;
578  ptr_cb += s->uvlinesize;
579  ptr_cr += s->uvlinesize;
580  }
581  // damn interlaced mode
582  // FIXME boundary mirroring is not exactly correct here
583  qpix_op[1][dxy](dest_y, ptr_y, linesize);
584  qpix_op[1][dxy](dest_y + 8, ptr_y + 8, linesize);
585  }
586  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY)) {
587  pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
588  pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
589  }
590 }
591 
592 /**
593  * h263 chroma 4mv motion compensation.
594  */
596  uint8_t *dest_cb, uint8_t *dest_cr,
597  uint8_t **ref_picture,
598  op_pixels_func *pix_op,
599  int mx, int my)
600 {
601  uint8_t *ptr;
602  int src_x, src_y, dxy, emu = 0;
603  ptrdiff_t offset;
604 
605  /* In case of 8X8, we construct a single chroma motion vector
606  * with a special rounding */
607  mx = ff_h263_round_chroma(mx);
608  my = ff_h263_round_chroma(my);
609 
610  dxy = ((my & 1) << 1) | (mx & 1);
611  mx >>= 1;
612  my >>= 1;
613 
614  src_x = s->mb_x * 8 + mx;
615  src_y = s->mb_y * 8 + my;
616  src_x = av_clip(src_x, -8, (s->width >> 1));
617  if (src_x == (s->width >> 1))
618  dxy &= ~1;
619  src_y = av_clip(src_y, -8, (s->height >> 1));
620  if (src_y == (s->height >> 1))
621  dxy &= ~2;
622 
623  offset = src_y * s->uvlinesize + src_x;
624  ptr = ref_picture[1] + offset;
625  if ((unsigned)src_x >= FFMAX((s->h_edge_pos >> 1) - (dxy & 1) - 7, 0) ||
626  (unsigned)src_y >= FFMAX((s->v_edge_pos >> 1) - (dxy >> 1) - 7, 0)) {
628  s->uvlinesize, s->uvlinesize,
629  9, 9, src_x, src_y,
630  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
631  ptr = s->edge_emu_buffer;
632  emu = 1;
633  }
634  pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
635 
636  ptr = ref_picture[2] + offset;
637  if (emu) {
639  s->uvlinesize, s->uvlinesize,
640  9, 9, src_x, src_y,
641  s->h_edge_pos >> 1, s->v_edge_pos >> 1);
642  ptr = s->edge_emu_buffer;
643  }
644  pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
645 }
646 
647 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir)
648 {
649  /* fetch pixels for estimated mv 4 macroblocks ahead
650  * optimized for 64byte cache lines */
651  const int shift = s->quarter_sample ? 2 : 1;
652  const int mx = (s->mv[dir][0][0] >> shift) + 16 * s->mb_x + 8;
653  const int my = (s->mv[dir][0][1] >> shift) + 16 * s->mb_y;
654  int off = mx + (my + (s->mb_x & 3) * 4) * s->linesize + 64;
655 
656  s->vdsp.prefetch(pix[0] + off, s->linesize, 4);
657  off = (mx >> 1) + ((my >> 1) + (s->mb_x & 7)) * s->uvlinesize + 64;
658  s->vdsp.prefetch(pix[1] + off, pix[2] - pix[1], 2);
659 }
660 
661 static inline void apply_obmc(MpegEncContext *s,
662  uint8_t *dest_y,
663  uint8_t *dest_cb,
664  uint8_t *dest_cr,
665  uint8_t **ref_picture,
666  op_pixels_func (*pix_op)[4])
667 {
668  LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);
669  Picture *cur_frame = &s->current_picture;
670  int mb_x = s->mb_x;
671  int mb_y = s->mb_y;
672  const int xy = mb_x + mb_y * s->mb_stride;
673  const int mot_stride = s->b8_stride;
674  const int mot_xy = mb_x * 2 + mb_y * 2 * mot_stride;
675  int mx, my, i;
676 
677  av_assert2(!s->mb_skipped);
678 
679  AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy]);
680  AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);
681 
682  AV_COPY32(mv_cache[2][1],
683  cur_frame->motion_val[0][mot_xy + mot_stride]);
684  AV_COPY32(mv_cache[2][2],
685  cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
686 
687  AV_COPY32(mv_cache[3][1],
688  cur_frame->motion_val[0][mot_xy + mot_stride]);
689  AV_COPY32(mv_cache[3][2],
690  cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
691 
692  if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {
693  AV_COPY32(mv_cache[0][1], mv_cache[1][1]);
694  AV_COPY32(mv_cache[0][2], mv_cache[1][2]);
695  } else {
696  AV_COPY32(mv_cache[0][1],
697  cur_frame->motion_val[0][mot_xy - mot_stride]);
698  AV_COPY32(mv_cache[0][2],
699  cur_frame->motion_val[0][mot_xy - mot_stride + 1]);
700  }
701 
702  if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {
703  AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
704  AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
705  } else {
706  AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);
707  AV_COPY32(mv_cache[2][0],
708  cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);
709  }
710 
711  if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {
712  AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
713  AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
714  } else {
715  AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);
716  AV_COPY32(mv_cache[2][3],
717  cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);
718  }
719 
720  mx = 0;
721  my = 0;
722  for (i = 0; i < 4; i++) {
723  const int x = (i & 1) + 1;
724  const int y = (i >> 1) + 1;
725  int16_t mv[5][2] = {
726  { mv_cache[y][x][0], mv_cache[y][x][1] },
727  { mv_cache[y - 1][x][0], mv_cache[y - 1][x][1] },
728  { mv_cache[y][x - 1][0], mv_cache[y][x - 1][1] },
729  { mv_cache[y][x + 1][0], mv_cache[y][x + 1][1] },
730  { mv_cache[y + 1][x][0], mv_cache[y + 1][x][1] }
731  };
732  // FIXME cleanup
733  obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
734  ref_picture[0],
735  mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >> 1) * 8,
736  pix_op[1],
737  mv);
738 
739  mx += mv[0][0];
740  my += mv[0][1];
741  }
742  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
743  chroma_4mv_motion(s, dest_cb, dest_cr,
744  ref_picture, pix_op[1],
745  mx, my);
746 }
747 
748 static inline void apply_8x8(MpegEncContext *s,
749  uint8_t *dest_y,
750  uint8_t *dest_cb,
751  uint8_t *dest_cr,
752  int dir,
753  uint8_t **ref_picture,
754  qpel_mc_func (*qpix_op)[16],
755  op_pixels_func (*pix_op)[4])
756 {
757  int dxy, mx, my, src_x, src_y;
758  int i;
759  int mb_x = s->mb_x;
760  int mb_y = s->mb_y;
761  uint8_t *ptr, *dest;
762 
763  mx = 0;
764  my = 0;
765  if (s->quarter_sample) {
766  for (i = 0; i < 4; i++) {
767  int motion_x = s->mv[dir][i][0];
768  int motion_y = s->mv[dir][i][1];
769 
770  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
771  src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
772  src_y = mb_y * 16 + (motion_y >> 2) + (i >> 1) * 8;
773 
774  /* WARNING: do no forget half pels */
775  src_x = av_clip(src_x, -16, s->width);
776  if (src_x == s->width)
777  dxy &= ~3;
778  src_y = av_clip(src_y, -16, s->height);
779  if (src_y == s->height)
780  dxy &= ~12;
781 
782  ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
783  if ((unsigned)src_x >= FFMAX(s->h_edge_pos - (motion_x & 3) - 7, 0) ||
784  (unsigned)src_y >= FFMAX(s->v_edge_pos - (motion_y & 3) - 7, 0)) {
786  s->linesize, s->linesize,
787  9, 9,
788  src_x, src_y,
789  s->h_edge_pos,
790  s->v_edge_pos);
791  ptr = s->edge_emu_buffer;
792  }
793  dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
794  qpix_op[1][dxy](dest, ptr, s->linesize);
795 
796  mx += s->mv[dir][i][0] / 2;
797  my += s->mv[dir][i][1] / 2;
798  }
799  } else {
800  for (i = 0; i < 4; i++) {
801  hpel_motion(s,
802  dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
803  ref_picture[0],
804  mb_x * 16 + (i & 1) * 8,
805  mb_y * 16 + (i >> 1) * 8,
806  pix_op[1],
807  s->mv[dir][i][0],
808  s->mv[dir][i][1]);
809 
810  mx += s->mv[dir][i][0];
811  my += s->mv[dir][i][1];
812  }
813  }
814 
815  if (!CONFIG_GRAY || !(s->flags & CODEC_FLAG_GRAY))
816  chroma_4mv_motion(s, dest_cb, dest_cr,
817  ref_picture, pix_op[1], mx, my);
818 }
819 
820 /**
821  * motion compensation of a single macroblock
822  * @param s context
823  * @param dest_y luma destination pointer
824  * @param dest_cb chroma cb/u destination pointer
825  * @param dest_cr chroma cr/v destination pointer
826  * @param dir direction (0->forward, 1->backward)
827  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
828  * @param pix_op halfpel motion compensation function (average or put normally)
829  * @param qpix_op qpel motion compensation function (average or put normally)
830  * the motion vectors are taken from s->mv and the MV type from s->mv_type
831  */
833  uint8_t *dest_y,
834  uint8_t *dest_cb,
835  uint8_t *dest_cr,
836  int dir,
837  uint8_t **ref_picture,
838  op_pixels_func (*pix_op)[4],
839  qpel_mc_func (*qpix_op)[16],
840  int is_mpeg12)
841 {
842  int i;
843  int mb_y = s->mb_y;
844 
845  prefetch_motion(s, ref_picture, dir);
846 
847  if (!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B) {
848  apply_obmc(s, dest_y, dest_cb, dest_cr, ref_picture, pix_op);
849  return;
850  }
851 
852  switch (s->mv_type) {
853  case MV_TYPE_16X16:
854  if (s->mcsel) {
855  if (s->real_sprite_warping_points == 1) {
856  gmc1_motion(s, dest_y, dest_cb, dest_cr,
857  ref_picture);
858  } else {
859  gmc_motion(s, dest_y, dest_cb, dest_cr,
860  ref_picture);
861  }
862  } else if (!is_mpeg12 && s->quarter_sample) {
863  qpel_motion(s, dest_y, dest_cb, dest_cr,
864  0, 0, 0,
865  ref_picture, pix_op, qpix_op,
866  s->mv[dir][0][0], s->mv[dir][0][1], 16);
867  } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
868  s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
869  ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
870  ref_picture, pix_op,
871  s->mv[dir][0][0], s->mv[dir][0][1], 16);
872  } else {
873  mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
874  ref_picture, pix_op,
875  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
876  }
877  break;
878  case MV_TYPE_8X8:
879  if (!is_mpeg12)
880  apply_8x8(s, dest_y, dest_cb, dest_cr,
881  dir, ref_picture, qpix_op, pix_op);
882  break;
883  case MV_TYPE_FIELD:
884  if (s->picture_structure == PICT_FRAME) {
885  if (!is_mpeg12 && s->quarter_sample) {
886  for (i = 0; i < 2; i++)
887  qpel_motion(s, dest_y, dest_cb, dest_cr,
888  1, i, s->field_select[dir][i],
889  ref_picture, pix_op, qpix_op,
890  s->mv[dir][i][0], s->mv[dir][i][1], 8);
891  } else {
892  /* top field */
893  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
894  0, s->field_select[dir][0],
895  ref_picture, pix_op,
896  s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
897  /* bottom field */
898  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
899  1, s->field_select[dir][1],
900  ref_picture, pix_op,
901  s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
902  }
903  } else {
904  if ( s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field
905  || !ref_picture[0]) {
906  ref_picture = s->current_picture_ptr->f->data;
907  }
908 
909  mpeg_motion(s, dest_y, dest_cb, dest_cr,
910  s->field_select[dir][0],
911  ref_picture, pix_op,
912  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y >> 1);
913  }
914  break;
915  case MV_TYPE_16X8:
916  for (i = 0; i < 2; i++) {
917  uint8_t **ref2picture;
918 
919  if ((s->picture_structure == s->field_select[dir][i] + 1
920  || s->pict_type == AV_PICTURE_TYPE_B || s->first_field) && ref_picture[0]) {
921  ref2picture = ref_picture;
922  } else {
923  ref2picture = s->current_picture_ptr->f->data;
924  }
925 
926  mpeg_motion(s, dest_y, dest_cb, dest_cr,
927  s->field_select[dir][i],
928  ref2picture, pix_op,
929  s->mv[dir][i][0], s->mv[dir][i][1] + 16 * i,
930  8, mb_y >> 1);
931 
932  dest_y += 16 * s->linesize;
933  dest_cb += (16 >> s->chroma_y_shift) * s->uvlinesize;
934  dest_cr += (16 >> s->chroma_y_shift) * s->uvlinesize;
935  }
936  break;
937  case MV_TYPE_DMV:
938  if (s->picture_structure == PICT_FRAME) {
939  for (i = 0; i < 2; i++) {
940  int j;
941  for (j = 0; j < 2; j++)
942  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
943  j, j ^ i, ref_picture, pix_op,
944  s->mv[dir][2 * i + j][0],
945  s->mv[dir][2 * i + j][1], 8, mb_y);
946  pix_op = s->hdsp.avg_pixels_tab;
947  }
948  } else {
949  if (!ref_picture[0]) {
950  ref_picture = s->current_picture_ptr->f->data;
951  }
952  for (i = 0; i < 2; i++) {
953  mpeg_motion(s, dest_y, dest_cb, dest_cr,
954  s->picture_structure != i + 1,
955  ref_picture, pix_op,
956  s->mv[dir][2 * i][0], s->mv[dir][2 * i][1],
957  16, mb_y >> 1);
958 
959  // after put we make avg of the same block
960  pix_op = s->hdsp.avg_pixels_tab;
961 
962  /* opposite parity is always in the same frame if this is
963  * second field */
964  if (!s->first_field) {
965  ref_picture = s->current_picture_ptr->f->data;
966  }
967  }
968  }
969  break;
970  default: av_assert2(0);
971  }
972 }
973 
975  uint8_t *dest_y, uint8_t *dest_cb,
976  uint8_t *dest_cr, int dir,
977  uint8_t **ref_picture,
978  op_pixels_func (*pix_op)[4],
979  qpel_mc_func (*qpix_op)[16])
980 {
981 #if !CONFIG_SMALL
982  if (s->out_format == FMT_MPEG1)
983  mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
984  ref_picture, pix_op, qpix_op, 1);
985  else
986 #endif
987  mpv_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
988  ref_picture, pix_op, qpix_op, 0);
989 }