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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 #include "libavutil/avassert.h"
26 #include "avcodec.h"
27 #include "dsputil.h"
28 #include "mpegvideo.h"
29 #include "mjpegenc.h"
30 #include "msmpeg4.h"
31 #include <limits.h>
32 
33 static void gmc1_motion(MpegEncContext *s,
34  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
35  uint8_t **ref_picture)
36 {
37  uint8_t *ptr;
38  int offset, src_x, src_y, linesize, uvlinesize;
39  int motion_x, motion_y;
40  int emu=0;
41 
42  motion_x= s->sprite_offset[0][0];
43  motion_y= s->sprite_offset[0][1];
44  src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
45  src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
46  motion_x<<=(3-s->sprite_warping_accuracy);
47  motion_y<<=(3-s->sprite_warping_accuracy);
48  src_x = av_clip(src_x, -16, s->width);
49  if (src_x == s->width)
50  motion_x =0;
51  src_y = av_clip(src_y, -16, s->height);
52  if (src_y == s->height)
53  motion_y =0;
54 
55  linesize = s->linesize;
56  uvlinesize = s->uvlinesize;
57 
58  ptr = ref_picture[0] + (src_y * linesize) + src_x;
59 
60  if(s->flags&CODEC_FLAG_EMU_EDGE){
61  if( (unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0)
62  || (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)){
63  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, 17, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
64  ptr= s->edge_emu_buffer;
65  }
66  }
67 
68  if((motion_x|motion_y)&7){
69  s->dsp.gmc1(dest_y , ptr , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
70  s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
71  }else{
72  int dxy;
73 
74  dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
75  if (s->no_rounding){
76  s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
77  }else{
78  s->dsp.put_pixels_tab [0][dxy](dest_y, ptr, linesize, 16);
79  }
80  }
81 
82  if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
83 
84  motion_x= s->sprite_offset[1][0];
85  motion_y= s->sprite_offset[1][1];
86  src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
87  src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
88  motion_x<<=(3-s->sprite_warping_accuracy);
89  motion_y<<=(3-s->sprite_warping_accuracy);
90  src_x = av_clip(src_x, -8, s->width>>1);
91  if (src_x == s->width>>1)
92  motion_x =0;
93  src_y = av_clip(src_y, -8, s->height>>1);
94  if (src_y == s->height>>1)
95  motion_y =0;
96 
97  offset = (src_y * uvlinesize) + src_x;
98  ptr = ref_picture[1] + offset;
99  if(s->flags&CODEC_FLAG_EMU_EDGE){
100  if( (unsigned)src_x >= FFMAX((s->h_edge_pos>>1) - 9, 0)
101  || (unsigned)src_y >= FFMAX((s->v_edge_pos>>1) - 9, 0)){
102  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
103  ptr= s->edge_emu_buffer;
104  emu=1;
105  }
106  }
107  s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
108 
109  ptr = ref_picture[2] + offset;
110  if(emu){
111  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, uvlinesize, 9, 9, src_x, src_y, s->h_edge_pos>>1, s->v_edge_pos>>1);
112  ptr= s->edge_emu_buffer;
113  }
114  s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
115 
116  return;
117 }
118 
119 static void gmc_motion(MpegEncContext *s,
120  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
121  uint8_t **ref_picture)
122 {
123  uint8_t *ptr;
124  int linesize, uvlinesize;
125  const int a= s->sprite_warping_accuracy;
126  int ox, oy;
127 
128  linesize = s->linesize;
129  uvlinesize = s->uvlinesize;
130 
131  ptr = ref_picture[0];
132 
133  ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
134  oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
135 
136  s->dsp.gmc(dest_y, ptr, linesize, 16,
137  ox,
138  oy,
139  s->sprite_delta[0][0], s->sprite_delta[0][1],
140  s->sprite_delta[1][0], s->sprite_delta[1][1],
141  a+1, (1<<(2*a+1)) - s->no_rounding,
142  s->h_edge_pos, s->v_edge_pos);
143  s->dsp.gmc(dest_y+8, ptr, linesize, 16,
144  ox + s->sprite_delta[0][0]*8,
145  oy + s->sprite_delta[1][0]*8,
146  s->sprite_delta[0][0], s->sprite_delta[0][1],
147  s->sprite_delta[1][0], s->sprite_delta[1][1],
148  a+1, (1<<(2*a+1)) - s->no_rounding,
149  s->h_edge_pos, s->v_edge_pos);
150 
151  if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
152 
153  ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
154  oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
155 
156  ptr = ref_picture[1];
157  s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
158  ox,
159  oy,
160  s->sprite_delta[0][0], s->sprite_delta[0][1],
161  s->sprite_delta[1][0], s->sprite_delta[1][1],
162  a+1, (1<<(2*a+1)) - s->no_rounding,
163  s->h_edge_pos>>1, s->v_edge_pos>>1);
164 
165  ptr = ref_picture[2];
166  s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
167  ox,
168  oy,
169  s->sprite_delta[0][0], s->sprite_delta[0][1],
170  s->sprite_delta[1][0], s->sprite_delta[1][1],
171  a+1, (1<<(2*a+1)) - s->no_rounding,
172  s->h_edge_pos>>1, s->v_edge_pos>>1);
173 }
174 
175 static inline int hpel_motion(MpegEncContext *s,
176  uint8_t *dest, uint8_t *src,
177  int src_x, int src_y,
178  op_pixels_func *pix_op,
179  int motion_x, int motion_y)
180 {
181  int dxy = 0;
182  int emu=0;
183 
184  src_x += motion_x >> 1;
185  src_y += motion_y >> 1;
186 
187  /* WARNING: do no forget half pels */
188  src_x = av_clip(src_x, -16, s->width); //FIXME unneeded for emu?
189  if (src_x != s->width)
190  dxy |= motion_x & 1;
191  src_y = av_clip(src_y, -16, s->height);
192  if (src_y != s->height)
193  dxy |= (motion_y & 1) << 1;
194  src += src_y * s->linesize + src_x;
195 
196  if(s->unrestricted_mv && (s->flags&CODEC_FLAG_EMU_EDGE)){
197  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&1) - 8, 0)
198  || (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y&1) - 8, 0)){
199  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, 9, 9,
200  src_x, src_y, s->h_edge_pos, s->v_edge_pos);
201  src= s->edge_emu_buffer;
202  emu=1;
203  }
204  }
205  pix_op[dxy](dest, src, s->linesize, 8);
206  return emu;
207 }
208 
209 static av_always_inline
210 void mpeg_motion_internal(MpegEncContext *s,
211  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
212  int field_based, int bottom_field, int field_select,
213  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
214  int motion_x, int motion_y, int h, int is_mpeg12, int mb_y)
215 {
216  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
217  int dxy, uvdxy, mx, my, src_x, src_y,
218  uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
219 
220 #if 0
221 if(s->quarter_sample)
222 {
223  motion_x>>=1;
224  motion_y>>=1;
225 }
226 #endif
227 
228  v_edge_pos = s->v_edge_pos >> field_based;
229  linesize = s->current_picture.f.linesize[0] << field_based;
230  uvlinesize = s->current_picture.f.linesize[1] << field_based;
231 
232  dxy = ((motion_y & 1) << 1) | (motion_x & 1);
233  src_x = s->mb_x* 16 + (motion_x >> 1);
234  src_y =( mb_y<<(4-field_based)) + (motion_y >> 1);
235 
236  if (!is_mpeg12 && s->out_format == FMT_H263) {
237  if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
238  mx = (motion_x>>1)|(motion_x&1);
239  my = motion_y >>1;
240  uvdxy = ((my & 1) << 1) | (mx & 1);
241  uvsrc_x = s->mb_x* 8 + (mx >> 1);
242  uvsrc_y =( mb_y<<(3-field_based))+ (my >> 1);
243  }else{
244  uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
245  uvsrc_x = src_x>>1;
246  uvsrc_y = src_y>>1;
247  }
248  }else if(!is_mpeg12 && s->out_format == FMT_H261){//even chroma mv's are full pel in H261
249  mx = motion_x / 4;
250  my = motion_y / 4;
251  uvdxy = 0;
252  uvsrc_x = s->mb_x*8 + mx;
253  uvsrc_y = mb_y*8 + my;
254  } else {
255  if(s->chroma_y_shift){
256  mx = motion_x / 2;
257  my = motion_y / 2;
258  uvdxy = ((my & 1) << 1) | (mx & 1);
259  uvsrc_x = s->mb_x* 8 + (mx >> 1);
260  uvsrc_y =( mb_y<<(3-field_based))+ (my >> 1);
261  } else {
262  if(s->chroma_x_shift){
263  //Chroma422
264  mx = motion_x / 2;
265  uvdxy = ((motion_y & 1) << 1) | (mx & 1);
266  uvsrc_x = s->mb_x* 8 + (mx >> 1);
267  uvsrc_y = src_y;
268  } else {
269  //Chroma444
270  uvdxy = dxy;
271  uvsrc_x = src_x;
272  uvsrc_y = src_y;
273  }
274  }
275  }
276 
277  ptr_y = ref_picture[0] + src_y * linesize + src_x;
278  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
279  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
280 
281  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&1) - 16, 0)
282  || (unsigned)src_y > FFMAX( v_edge_pos - (motion_y&1) - h , 0)){
283  if(is_mpeg12 || s->codec_id == AV_CODEC_ID_MPEG2VIDEO ||
284  s->codec_id == AV_CODEC_ID_MPEG1VIDEO){
285  av_log(s->avctx,AV_LOG_DEBUG,
286  "MPEG motion vector out of boundary (%d %d)\n", src_x, src_y);
287  return;
288  }
289  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
290  17, 17+field_based,
291  src_x, src_y<<field_based,
292  s->h_edge_pos, s->v_edge_pos);
293  ptr_y = s->edge_emu_buffer;
294  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
295  uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
296  s->vdsp.emulated_edge_mc(uvbuf ,
297  ptr_cb, s->uvlinesize,
298  9, 9+field_based,
299  uvsrc_x, uvsrc_y<<field_based,
300  s->h_edge_pos>>1, s->v_edge_pos>>1);
301  s->vdsp.emulated_edge_mc(uvbuf+16,
302  ptr_cr, s->uvlinesize,
303  9, 9+field_based,
304  uvsrc_x, uvsrc_y<<field_based,
305  s->h_edge_pos>>1, s->v_edge_pos>>1);
306  ptr_cb= uvbuf;
307  ptr_cr= uvbuf+16;
308  }
309  }
310 
311  if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
312  dest_y += s->linesize;
313  dest_cb+= s->uvlinesize;
314  dest_cr+= s->uvlinesize;
315  }
316 
317  if(field_select){
318  ptr_y += s->linesize;
319  ptr_cb+= s->uvlinesize;
320  ptr_cr+= s->uvlinesize;
321  }
322 
323  pix_op[0][dxy](dest_y, ptr_y, linesize, h);
324 
325  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
326  pix_op[s->chroma_x_shift][uvdxy]
327  (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
328  pix_op[s->chroma_x_shift][uvdxy]
329  (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
330  }
331  if(!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
332  s->out_format == FMT_H261){
333  ff_h261_loop_filter(s);
334  }
335 }
336 /* apply one mpeg motion vector to the three components */
337 static void mpeg_motion(MpegEncContext *s,
338  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
339  int field_select, uint8_t **ref_picture,
340  op_pixels_func (*pix_op)[4],
341  int motion_x, int motion_y, int h, int mb_y)
342 {
343 #if !CONFIG_SMALL
344  if(s->out_format == FMT_MPEG1)
345  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
346  field_select, ref_picture, pix_op,
347  motion_x, motion_y, h, 1, mb_y);
348  else
349 #endif
350  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 0, 0,
351  field_select, ref_picture, pix_op,
352  motion_x, motion_y, h, 0, mb_y);
353 }
354 
355 static void mpeg_motion_field(MpegEncContext *s, uint8_t *dest_y,
356  uint8_t *dest_cb, uint8_t *dest_cr,
357  int bottom_field, int field_select,
358  uint8_t **ref_picture,
359  op_pixels_func (*pix_op)[4],
360  int motion_x, int motion_y, int h, int mb_y)
361 {
362 #if !CONFIG_SMALL
363  if(s->out_format == FMT_MPEG1)
364  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
365  bottom_field, field_select, ref_picture, pix_op,
366  motion_x, motion_y, h, 1, mb_y);
367  else
368 #endif
369  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, 1,
370  bottom_field, field_select, ref_picture, pix_op,
371  motion_x, motion_y, h, 0, mb_y);
372 }
373 
374 //FIXME move to dsputil, avg variant, 16x16 version
375 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
376  int x;
377  uint8_t * const top = src[1];
378  uint8_t * const left = src[2];
379  uint8_t * const mid = src[0];
380  uint8_t * const right = src[3];
381  uint8_t * const bottom= src[4];
382 #define OBMC_FILTER(x, t, l, m, r, b)\
383  dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
384 #define OBMC_FILTER4(x, t, l, m, r, b)\
385  OBMC_FILTER(x , t, l, m, r, b);\
386  OBMC_FILTER(x+1 , t, l, m, r, b);\
387  OBMC_FILTER(x +stride, t, l, m, r, b);\
388  OBMC_FILTER(x+1+stride, t, l, m, r, b);
389 
390  x=0;
391  OBMC_FILTER (x , 2, 2, 4, 0, 0);
392  OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
393  OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
394  OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
395  OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
396  OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
397  x+= stride;
398  OBMC_FILTER (x , 1, 2, 5, 0, 0);
399  OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
400  OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
401  OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
402  x+= stride;
403  OBMC_FILTER4(x , 1, 2, 5, 0, 0);
404  OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
405  OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
406  OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
407  x+= 2*stride;
408  OBMC_FILTER4(x , 0, 2, 5, 0, 1);
409  OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
410  OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
411  OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
412  x+= 2*stride;
413  OBMC_FILTER (x , 0, 2, 5, 0, 1);
414  OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
415  OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
416  OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
417  OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
418  OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
419  x+= stride;
420  OBMC_FILTER (x , 0, 2, 4, 0, 2);
421  OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
422  OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
423  OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
424 }
425 
426 /* obmc for 1 8x8 luma block */
427 static inline void obmc_motion(MpegEncContext *s,
428  uint8_t *dest, uint8_t *src,
429  int src_x, int src_y,
430  op_pixels_func *pix_op,
431  int16_t mv[5][2]/* mid top left right bottom*/)
432 #define MID 0
433 {
434  int i;
435  uint8_t *ptr[5];
436 
437  av_assert2(s->quarter_sample==0);
438 
439  for(i=0; i<5; i++){
440  if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
441  ptr[i]= ptr[MID];
442  }else{
443  ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
444  hpel_motion(s, ptr[i], src,
445  src_x, src_y,
446  pix_op,
447  mv[i][0], mv[i][1]);
448  }
449  }
450 
451  put_obmc(dest, ptr, s->linesize);
452 }
453 
454 static inline void qpel_motion(MpegEncContext *s,
455  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
456  int field_based, int bottom_field, int field_select,
457  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
458  qpel_mc_func (*qpix_op)[16],
459  int motion_x, int motion_y, int h)
460 {
461  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
462  int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
463 
464  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
465  src_x = s->mb_x * 16 + (motion_x >> 2);
466  src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
467 
468  v_edge_pos = s->v_edge_pos >> field_based;
469  linesize = s->linesize << field_based;
470  uvlinesize = s->uvlinesize << field_based;
471 
472  if(field_based){
473  mx= motion_x/2;
474  my= motion_y>>1;
475  }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA2){
476  static const int rtab[8]= {0,0,1,1,0,0,0,1};
477  mx= (motion_x>>1) + rtab[motion_x&7];
478  my= (motion_y>>1) + rtab[motion_y&7];
479  }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
480  mx= (motion_x>>1)|(motion_x&1);
481  my= (motion_y>>1)|(motion_y&1);
482  }else{
483  mx= motion_x/2;
484  my= motion_y/2;
485  }
486  mx= (mx>>1)|(mx&1);
487  my= (my>>1)|(my&1);
488 
489  uvdxy= (mx&1) | ((my&1)<<1);
490  mx>>=1;
491  my>>=1;
492 
493  uvsrc_x = s->mb_x * 8 + mx;
494  uvsrc_y = s->mb_y * (8 >> field_based) + my;
495 
496  ptr_y = ref_picture[0] + src_y * linesize + src_x;
497  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
498  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
499 
500  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 16, 0)
501  || (unsigned)src_y > FFMAX( v_edge_pos - (motion_y&3) - h , 0)){
502  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
503  17, 17+field_based, src_x, src_y<<field_based,
504  s->h_edge_pos, s->v_edge_pos);
505  ptr_y= s->edge_emu_buffer;
506  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
507  uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
508  s->vdsp.emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize,
509  9, 9 + field_based,
510  uvsrc_x, uvsrc_y<<field_based,
511  s->h_edge_pos>>1, s->v_edge_pos>>1);
512  s->vdsp.emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize,
513  9, 9 + field_based,
514  uvsrc_x, uvsrc_y<<field_based,
515  s->h_edge_pos>>1, s->v_edge_pos>>1);
516  ptr_cb= uvbuf;
517  ptr_cr= uvbuf + 16;
518  }
519  }
520 
521  if(!field_based)
522  qpix_op[0][dxy](dest_y, ptr_y, linesize);
523  else{
524  if(bottom_field){
525  dest_y += s->linesize;
526  dest_cb+= s->uvlinesize;
527  dest_cr+= s->uvlinesize;
528  }
529 
530  if(field_select){
531  ptr_y += s->linesize;
532  ptr_cb += s->uvlinesize;
533  ptr_cr += s->uvlinesize;
534  }
535  //damn interlaced mode
536  //FIXME boundary mirroring is not exactly correct here
537  qpix_op[1][dxy](dest_y , ptr_y , linesize);
538  qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
539  }
540  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
541  pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
542  pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
543  }
544 }
545 
546 /**
547  * h263 chroma 4mv motion compensation.
548  */
549 static void chroma_4mv_motion(MpegEncContext *s,
550  uint8_t *dest_cb, uint8_t *dest_cr,
551  uint8_t **ref_picture,
552  op_pixels_func *pix_op,
553  int mx, int my)
554 {
555  int dxy, emu=0, src_x, src_y, offset;
556  uint8_t *ptr;
557 
558  /* In case of 8X8, we construct a single chroma motion vector
559  with a special rounding */
560  mx= ff_h263_round_chroma(mx);
561  my= ff_h263_round_chroma(my);
562 
563  dxy = ((my & 1) << 1) | (mx & 1);
564  mx >>= 1;
565  my >>= 1;
566 
567  src_x = s->mb_x * 8 + mx;
568  src_y = s->mb_y * 8 + my;
569  src_x = av_clip(src_x, -8, (s->width >> 1));
570  if (src_x == (s->width >> 1))
571  dxy &= ~1;
572  src_y = av_clip(src_y, -8, (s->height >> 1));
573  if (src_y == (s->height >> 1))
574  dxy &= ~2;
575 
576  offset = src_y * s->uvlinesize + src_x;
577  ptr = ref_picture[1] + offset;
578  if(s->flags&CODEC_FLAG_EMU_EDGE){
579  if( (unsigned)src_x > FFMAX((s->h_edge_pos>>1) - (dxy &1) - 8, 0)
580  || (unsigned)src_y > FFMAX((s->v_edge_pos>>1) - (dxy>>1) - 8, 0)){
581  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
582  9, 9, src_x, src_y,
583  s->h_edge_pos>>1, s->v_edge_pos>>1);
584  ptr= s->edge_emu_buffer;
585  emu=1;
586  }
587  }
588  pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
589 
590  ptr = ref_picture[2] + offset;
591  if(emu){
592  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr, s->uvlinesize,
593  9, 9, src_x, src_y,
594  s->h_edge_pos>>1, s->v_edge_pos>>1);
595  ptr= s->edge_emu_buffer;
596  }
597  pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
598 }
599 
600 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
601  /* fetch pixels for estimated mv 4 macroblocks ahead
602  * optimized for 64byte cache lines */
603  const int shift = s->quarter_sample ? 2 : 1;
604  const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
605  const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
606  int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
607  s->vdsp.prefetch(pix[0]+off, s->linesize, 4);
608  off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
609  s->vdsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
610 }
611 
612 /**
613  * motion compensation of a single macroblock
614  * @param s context
615  * @param dest_y luma destination pointer
616  * @param dest_cb chroma cb/u destination pointer
617  * @param dest_cr chroma cr/v destination pointer
618  * @param dir direction (0->forward, 1->backward)
619  * @param ref_picture array[3] of pointers to the 3 planes of the reference picture
620  * @param pix_op halfpel motion compensation function (average or put normally)
621  * @param qpix_op qpel motion compensation function (average or put normally)
622  * the motion vectors are taken from s->mv and the MV type from s->mv_type
623  */
624 static av_always_inline void MPV_motion_internal(MpegEncContext *s,
625  uint8_t *dest_y, uint8_t *dest_cb,
626  uint8_t *dest_cr, int dir,
627  uint8_t **ref_picture,
628  op_pixels_func (*pix_op)[4],
629  qpel_mc_func (*qpix_op)[16], int is_mpeg12)
630 {
631  int dxy, mx, my, src_x, src_y, motion_x, motion_y;
632  int mb_x, mb_y, i;
633  uint8_t *ptr, *dest;
634 
635  mb_x = s->mb_x;
636  mb_y = s->mb_y;
637 
638  prefetch_motion(s, ref_picture, dir);
639 
640  if(!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B){
641  LOCAL_ALIGNED_8(int16_t, mv_cache, [4], [4][2]);
642  AVFrame *cur_frame = &s->current_picture.f;
643  const int xy= s->mb_x + s->mb_y*s->mb_stride;
644  const int mot_stride= s->b8_stride;
645  const int mot_xy= mb_x*2 + mb_y*2*mot_stride;
646 
647  av_assert2(!s->mb_skipped);
648 
649  AV_COPY32(mv_cache[1][1], cur_frame->motion_val[0][mot_xy ]);
650  AV_COPY32(mv_cache[1][2], cur_frame->motion_val[0][mot_xy + 1]);
651 
652  AV_COPY32(mv_cache[2][1], cur_frame->motion_val[0][mot_xy + mot_stride ]);
653  AV_COPY32(mv_cache[2][2], cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
654 
655  AV_COPY32(mv_cache[3][1], cur_frame->motion_val[0][mot_xy + mot_stride ]);
656  AV_COPY32(mv_cache[3][2], cur_frame->motion_val[0][mot_xy + mot_stride + 1]);
657 
658  if (mb_y == 0 || IS_INTRA(cur_frame->mb_type[xy - s->mb_stride])) {
659  AV_COPY32(mv_cache[0][1], mv_cache[1][1]);
660  AV_COPY32(mv_cache[0][2], mv_cache[1][2]);
661  }else{
662  AV_COPY32(mv_cache[0][1], cur_frame->motion_val[0][mot_xy - mot_stride ]);
663  AV_COPY32(mv_cache[0][2], cur_frame->motion_val[0][mot_xy - mot_stride + 1]);
664  }
665 
666  if (mb_x == 0 || IS_INTRA(cur_frame->mb_type[xy - 1])) {
667  AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
668  AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
669  }else{
670  AV_COPY32(mv_cache[1][0], cur_frame->motion_val[0][mot_xy - 1]);
671  AV_COPY32(mv_cache[2][0], cur_frame->motion_val[0][mot_xy - 1 + mot_stride]);
672  }
673 
674  if (mb_x + 1 >= s->mb_width || IS_INTRA(cur_frame->mb_type[xy + 1])) {
675  AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
676  AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
677  }else{
678  AV_COPY32(mv_cache[1][3], cur_frame->motion_val[0][mot_xy + 2]);
679  AV_COPY32(mv_cache[2][3], cur_frame->motion_val[0][mot_xy + 2 + mot_stride]);
680  }
681 
682  mx = 0;
683  my = 0;
684  for(i=0;i<4;i++) {
685  const int x= (i&1)+1;
686  const int y= (i>>1)+1;
687  int16_t mv[5][2]= {
688  {mv_cache[y][x ][0], mv_cache[y][x ][1]},
689  {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
690  {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
691  {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
692  {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
693  //FIXME cleanup
694  obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
695  ref_picture[0],
696  mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
697  pix_op[1],
698  mv);
699 
700  mx += mv[0][0];
701  my += mv[0][1];
702  }
703  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
704  chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
705 
706  return;
707  }
708 
709  switch(s->mv_type) {
710  case MV_TYPE_16X16:
711  if(s->mcsel){
712  if(s->real_sprite_warping_points==1){
713  gmc1_motion(s, dest_y, dest_cb, dest_cr,
714  ref_picture);
715  }else{
716  gmc_motion(s, dest_y, dest_cb, dest_cr,
717  ref_picture);
718  }
719  }else if(!is_mpeg12 && s->quarter_sample){
720  qpel_motion(s, dest_y, dest_cb, dest_cr,
721  0, 0, 0,
722  ref_picture, pix_op, qpix_op,
723  s->mv[dir][0][0], s->mv[dir][0][1], 16);
724  } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
725  s->mspel && s->codec_id == AV_CODEC_ID_WMV2) {
726  ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
727  ref_picture, pix_op,
728  s->mv[dir][0][0], s->mv[dir][0][1], 16);
729  }else
730  {
731  mpeg_motion(s, dest_y, dest_cb, dest_cr, 0,
732  ref_picture, pix_op,
733  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
734  }
735  break;
736  case MV_TYPE_8X8:
737  if (!is_mpeg12) {
738  mx = 0;
739  my = 0;
740  if(s->quarter_sample){
741  for(i=0;i<4;i++) {
742  motion_x = s->mv[dir][i][0];
743  motion_y = s->mv[dir][i][1];
744 
745  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
746  src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
747  src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
748 
749  /* WARNING: do no forget half pels */
750  src_x = av_clip(src_x, -16, s->width);
751  if (src_x == s->width)
752  dxy &= ~3;
753  src_y = av_clip(src_y, -16, s->height);
754  if (src_y == s->height)
755  dxy &= ~12;
756 
757  ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
758  if(s->flags&CODEC_FLAG_EMU_EDGE){
759  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 8, 0)
760  || (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y&3) - 8, 0)){
761  s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr,
762  s->linesize, 9, 9,
763  src_x, src_y,
764  s->h_edge_pos, s->v_edge_pos);
765  ptr= s->edge_emu_buffer;
766  }
767  }
768  dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
769  qpix_op[1][dxy](dest, ptr, s->linesize);
770 
771  mx += s->mv[dir][i][0]/2;
772  my += s->mv[dir][i][1]/2;
773  }
774  }else{
775  for(i=0;i<4;i++) {
776  hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
777  ref_picture[0],
778  mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
779  pix_op[1],
780  s->mv[dir][i][0], s->mv[dir][i][1]);
781 
782  mx += s->mv[dir][i][0];
783  my += s->mv[dir][i][1];
784  }
785  }
786 
787  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
788  chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
789  }
790  break;
791  case MV_TYPE_FIELD:
792  if (s->picture_structure == PICT_FRAME) {
793  if(!is_mpeg12 && s->quarter_sample){
794  for(i=0; i<2; i++){
795  qpel_motion(s, dest_y, dest_cb, dest_cr,
796  1, i, s->field_select[dir][i],
797  ref_picture, pix_op, qpix_op,
798  s->mv[dir][i][0], s->mv[dir][i][1], 8);
799  }
800  }else{
801  /* top field */
802  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
803  0, s->field_select[dir][0],
804  ref_picture, pix_op,
805  s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
806  /* bottom field */
807  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
808  1, s->field_select[dir][1],
809  ref_picture, pix_op,
810  s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
811  }
812  } else {
813  if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field){
814  ref_picture = s->current_picture_ptr->f.data;
815  }
816 
817  mpeg_motion(s, dest_y, dest_cb, dest_cr,
818  s->field_select[dir][0],
819  ref_picture, pix_op,
820  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y>>1);
821  }
822  break;
823  case MV_TYPE_16X8:
824  for(i=0; i<2; i++){
825  uint8_t ** ref2picture;
826 
827  if(s->picture_structure == s->field_select[dir][i] + 1
828  || s->pict_type == AV_PICTURE_TYPE_B || s->first_field){
829  ref2picture= ref_picture;
830  }else{
831  ref2picture = s->current_picture_ptr->f.data;
832  }
833 
834  mpeg_motion(s, dest_y, dest_cb, dest_cr,
835  s->field_select[dir][i],
836  ref2picture, pix_op,
837  s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8, mb_y>>1);
838 
839  dest_y += 16*s->linesize;
840  dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
841  dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
842  }
843  break;
844  case MV_TYPE_DMV:
845  if(s->picture_structure == PICT_FRAME){
846  for(i=0; i<2; i++){
847  int j;
848  for(j=0; j<2; j++){
849  mpeg_motion_field(s, dest_y, dest_cb, dest_cr,
850  j, j^i, ref_picture, pix_op,
851  s->mv[dir][2*i + j][0],
852  s->mv[dir][2*i + j][1], 8, mb_y);
853  }
854  pix_op = s->dsp.avg_pixels_tab;
855  }
856  }else{
857  for(i=0; i<2; i++){
858  mpeg_motion(s, dest_y, dest_cb, dest_cr,
859  s->picture_structure != i+1,
860  ref_picture, pix_op,
861  s->mv[dir][2*i][0],s->mv[dir][2*i][1],16, mb_y>>1);
862 
863  // after put we make avg of the same block
864  pix_op=s->dsp.avg_pixels_tab;
865 
866  //opposite parity is always in the same frame if this is second field
867  if(!s->first_field){
868  ref_picture = s->current_picture_ptr->f.data;
869  }
870  }
871  }
872  break;
873  default: av_assert2(0);
874  }
875 }
876 
877 void ff_MPV_motion(MpegEncContext *s,
878  uint8_t *dest_y, uint8_t *dest_cb,
879  uint8_t *dest_cr, int dir,
880  uint8_t **ref_picture,
881  op_pixels_func (*pix_op)[4],
882  qpel_mc_func (*qpix_op)[16])
883 {
884 #if !CONFIG_SMALL
885  if(s->out_format == FMT_MPEG1)
886  MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
887  ref_picture, pix_op, qpix_op, 1);
888  else
889 #endif
890  MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
891  ref_picture, pix_op, qpix_op, 0);
892 }
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