mpegvideo_common.h
Go to the documentation of this file.
1 /*
2  * The simplest mpeg encoder (well, it was the simplest!)
3  * Copyright (c) 2000,2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * 4MV & hq & B-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
7  *
8  * This file is part of Libav.
9  *
10  * Libav is free software; you can redistribute it and/or
11  * modify it under the terms of the GNU Lesser General Public
12  * License as published by the Free Software Foundation; either
13  * version 2.1 of the License, or (at your option) any later version.
14  *
15  * Libav is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18  * Lesser General Public License for more details.
19  *
20  * You should have received a copy of the GNU Lesser General Public
21  * License along with Libav; if not, write to the Free Software
22  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23  */
24 
30 #ifndef AVCODEC_MPEGVIDEO_COMMON_H
31 #define AVCODEC_MPEGVIDEO_COMMON_H
32 
33 #include <string.h>
34 #include "avcodec.h"
35 #include "dsputil.h"
36 #include "mpegvideo.h"
37 #include "mjpegenc.h"
38 #include "msmpeg4.h"
39 #include "faandct.h"
40 #include <limits.h>
41 
42 int dct_quantize_c(MpegEncContext *s, DCTELEM *block, int n, int qscale, int *overflow);
43 
48 int alloc_picture(MpegEncContext *s, Picture *pic, int shared);
49 
55 
56 static inline void gmc1_motion(MpegEncContext *s,
57  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
58  uint8_t **ref_picture)
59 {
60  uint8_t *ptr;
61  int offset, src_x, src_y, linesize, uvlinesize;
62  int motion_x, motion_y;
63  int emu=0;
64 
65  motion_x= s->sprite_offset[0][0];
66  motion_y= s->sprite_offset[0][1];
67  src_x = s->mb_x * 16 + (motion_x >> (s->sprite_warping_accuracy+1));
68  src_y = s->mb_y * 16 + (motion_y >> (s->sprite_warping_accuracy+1));
69  motion_x<<=(3-s->sprite_warping_accuracy);
70  motion_y<<=(3-s->sprite_warping_accuracy);
71  src_x = av_clip(src_x, -16, s->width);
72  if (src_x == s->width)
73  motion_x =0;
74  src_y = av_clip(src_y, -16, s->height);
75  if (src_y == s->height)
76  motion_y =0;
77 
78  linesize = s->linesize;
79  uvlinesize = s->uvlinesize;
80 
81  ptr = ref_picture[0] + (src_y * linesize) + src_x;
82 
84  if( (unsigned)src_x >= FFMAX(s->h_edge_pos - 17, 0)
85  || (unsigned)src_y >= FFMAX(s->v_edge_pos - 17, 0)){
86  s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr, linesize, 17, 17, src_x, src_y, s->h_edge_pos, s->v_edge_pos);
87  ptr= s->edge_emu_buffer;
88  }
89  }
90 
91  if((motion_x|motion_y)&7){
92  s->dsp.gmc1(dest_y , ptr , linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
93  s->dsp.gmc1(dest_y+8, ptr+8, linesize, 16, motion_x&15, motion_y&15, 128 - s->no_rounding);
94  }else{
95  int dxy;
96 
97  dxy= ((motion_x>>3)&1) | ((motion_y>>2)&2);
98  if (s->no_rounding){
99  s->dsp.put_no_rnd_pixels_tab[0][dxy](dest_y, ptr, linesize, 16);
100  }else{
101  s->dsp.put_pixels_tab [0][dxy](dest_y, ptr, linesize, 16);
102  }
103  }
104 
105  if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
106 
107  motion_x= s->sprite_offset[1][0];
108  motion_y= s->sprite_offset[1][1];
109  src_x = s->mb_x * 8 + (motion_x >> (s->sprite_warping_accuracy+1));
110  src_y = s->mb_y * 8 + (motion_y >> (s->sprite_warping_accuracy+1));
111  motion_x<<=(3-s->sprite_warping_accuracy);
112  motion_y<<=(3-s->sprite_warping_accuracy);
113  src_x = av_clip(src_x, -8, s->width>>1);
114  if (src_x == s->width>>1)
115  motion_x =0;
116  src_y = av_clip(src_y, -8, s->height>>1);
117  if (src_y == s->height>>1)
118  motion_y =0;
119 
120  offset = (src_y * uvlinesize) + src_x;
121  ptr = ref_picture[1] + offset;
122  if(s->flags&CODEC_FLAG_EMU_EDGE){
123  if( (unsigned)src_x >= FFMAX((s->h_edge_pos>>1) - 9, 0)
124  || (unsigned)src_y >= FFMAX((s->v_edge_pos>>1) - 9, 0)){
125  s->dsp.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);
126  ptr= s->edge_emu_buffer;
127  emu=1;
128  }
129  }
130  s->dsp.gmc1(dest_cb, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
131 
132  ptr = ref_picture[2] + offset;
133  if(emu){
134  s->dsp.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);
135  ptr= s->edge_emu_buffer;
136  }
137  s->dsp.gmc1(dest_cr, ptr, uvlinesize, 8, motion_x&15, motion_y&15, 128 - s->no_rounding);
138 
139  return;
140 }
141 
142 static inline void gmc_motion(MpegEncContext *s,
143  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
144  uint8_t **ref_picture)
145 {
146  uint8_t *ptr;
147  int linesize, uvlinesize;
148  const int a= s->sprite_warping_accuracy;
149  int ox, oy;
150 
151  linesize = s->linesize;
152  uvlinesize = s->uvlinesize;
153 
154  ptr = ref_picture[0];
155 
156  ox= s->sprite_offset[0][0] + s->sprite_delta[0][0]*s->mb_x*16 + s->sprite_delta[0][1]*s->mb_y*16;
157  oy= s->sprite_offset[0][1] + s->sprite_delta[1][0]*s->mb_x*16 + s->sprite_delta[1][1]*s->mb_y*16;
158 
159  s->dsp.gmc(dest_y, ptr, linesize, 16,
160  ox,
161  oy,
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  s->dsp.gmc(dest_y+8, ptr, linesize, 16,
167  ox + s->sprite_delta[0][0]*8,
168  oy + s->sprite_delta[1][0]*8,
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, s->v_edge_pos);
173 
174  if(CONFIG_GRAY && s->flags&CODEC_FLAG_GRAY) return;
175 
176  ox= s->sprite_offset[1][0] + s->sprite_delta[0][0]*s->mb_x*8 + s->sprite_delta[0][1]*s->mb_y*8;
177  oy= s->sprite_offset[1][1] + s->sprite_delta[1][0]*s->mb_x*8 + s->sprite_delta[1][1]*s->mb_y*8;
178 
179  ptr = ref_picture[1];
180  s->dsp.gmc(dest_cb, ptr, uvlinesize, 8,
181  ox,
182  oy,
183  s->sprite_delta[0][0], s->sprite_delta[0][1],
184  s->sprite_delta[1][0], s->sprite_delta[1][1],
185  a+1, (1<<(2*a+1)) - s->no_rounding,
186  s->h_edge_pos>>1, s->v_edge_pos>>1);
187 
188  ptr = ref_picture[2];
189  s->dsp.gmc(dest_cr, ptr, uvlinesize, 8,
190  ox,
191  oy,
192  s->sprite_delta[0][0], s->sprite_delta[0][1],
193  s->sprite_delta[1][0], s->sprite_delta[1][1],
194  a+1, (1<<(2*a+1)) - s->no_rounding,
195  s->h_edge_pos>>1, s->v_edge_pos>>1);
196 }
197 
198 static inline int hpel_motion(MpegEncContext *s,
199  uint8_t *dest, uint8_t *src,
200  int field_based, int field_select,
201  int src_x, int src_y,
202  int width, int height, int stride,
203  int h_edge_pos, int v_edge_pos,
204  int w, int h, op_pixels_func *pix_op,
205  int motion_x, int motion_y)
206 {
207  int dxy;
208  int emu=0;
209 
210  dxy = ((motion_y & 1) << 1) | (motion_x & 1);
211  src_x += motion_x >> 1;
212  src_y += motion_y >> 1;
213 
214  /* WARNING: do no forget half pels */
215  src_x = av_clip(src_x, -16, width); //FIXME unneeded for emu?
216  if (src_x == width)
217  dxy &= ~1;
218  src_y = av_clip(src_y, -16, height);
219  if (src_y == height)
220  dxy &= ~2;
221  src += src_y * stride + src_x;
222 
224  if( (unsigned)src_x > FFMAX(h_edge_pos - (motion_x&1) - w, 0)
225  || (unsigned)src_y > FFMAX(v_edge_pos - (motion_y&1) - h, 0)){
226  s->dsp.emulated_edge_mc(s->edge_emu_buffer, src, s->linesize, w+1, (h+1)<<field_based,
227  src_x, src_y<<field_based, h_edge_pos, s->v_edge_pos);
228  src= s->edge_emu_buffer;
229  emu=1;
230  }
231  }
232  if(field_select)
233  src += s->linesize;
234  pix_op[dxy](dest, src, stride, h);
235  return emu;
236 }
237 
238 static av_always_inline
240  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
241  int field_based, int bottom_field, int field_select,
242  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
243  int motion_x, int motion_y, int h, int is_mpeg12, int mb_y)
244 {
245  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
246  int dxy, uvdxy, mx, my, src_x, src_y,
247  uvsrc_x, uvsrc_y, v_edge_pos, uvlinesize, linesize;
248 
249 #if 0
250 if(s->quarter_sample)
251 {
252  motion_x>>=1;
253  motion_y>>=1;
254 }
255 #endif
256 
257  v_edge_pos = s->v_edge_pos >> field_based;
258  linesize = s->current_picture.f.linesize[0] << field_based;
259  uvlinesize = s->current_picture.f.linesize[1] << field_based;
260 
261  dxy = ((motion_y & 1) << 1) | (motion_x & 1);
262  src_x = s->mb_x* 16 + (motion_x >> 1);
263  src_y =( mb_y<<(4-field_based)) + (motion_y >> 1);
264 
265  if (!is_mpeg12 && s->out_format == FMT_H263) {
266  if((s->workaround_bugs & FF_BUG_HPEL_CHROMA) && field_based){
267  mx = (motion_x>>1)|(motion_x&1);
268  my = motion_y >>1;
269  uvdxy = ((my & 1) << 1) | (mx & 1);
270  uvsrc_x = s->mb_x* 8 + (mx >> 1);
271  uvsrc_y =( mb_y<<(3-field_based))+ (my >> 1);
272  }else{
273  uvdxy = dxy | (motion_y & 2) | ((motion_x & 2) >> 1);
274  uvsrc_x = src_x>>1;
275  uvsrc_y = src_y>>1;
276  }
277  }else if(!is_mpeg12 && s->out_format == FMT_H261){//even chroma mv's are full pel in H261
278  mx = motion_x / 4;
279  my = motion_y / 4;
280  uvdxy = 0;
281  uvsrc_x = s->mb_x*8 + mx;
282  uvsrc_y = mb_y*8 + my;
283  } else {
284  if(s->chroma_y_shift){
285  mx = motion_x / 2;
286  my = motion_y / 2;
287  uvdxy = ((my & 1) << 1) | (mx & 1);
288  uvsrc_x = s->mb_x* 8 + (mx >> 1);
289  uvsrc_y =( mb_y<<(3-field_based))+ (my >> 1);
290  } else {
291  if(s->chroma_x_shift){
292  //Chroma422
293  mx = motion_x / 2;
294  uvdxy = ((motion_y & 1) << 1) | (mx & 1);
295  uvsrc_x = s->mb_x* 8 + (mx >> 1);
296  uvsrc_y = src_y;
297  } else {
298  //Chroma444
299  uvdxy = dxy;
300  uvsrc_x = src_x;
301  uvsrc_y = src_y;
302  }
303  }
304  }
305 
306  ptr_y = ref_picture[0] + src_y * linesize + src_x;
307  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
308  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
309 
310  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&1) - 16, 0)
311  || (unsigned)src_y > FFMAX( v_edge_pos - (motion_y&1) - h , 0)){
312  if(is_mpeg12 || s->codec_id == CODEC_ID_MPEG2VIDEO ||
315  "MPEG motion vector out of boundary (%d %d)\n", src_x, src_y);
316  return;
317  }
318  s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
319  17, 17+field_based,
320  src_x, src_y<<field_based,
321  s->h_edge_pos, s->v_edge_pos);
322  ptr_y = s->edge_emu_buffer;
323  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
324  uint8_t *uvbuf= s->edge_emu_buffer+18*s->linesize;
325  s->dsp.emulated_edge_mc(uvbuf ,
326  ptr_cb, s->uvlinesize,
327  9, 9+field_based,
328  uvsrc_x, uvsrc_y<<field_based,
329  s->h_edge_pos>>1, s->v_edge_pos>>1);
330  s->dsp.emulated_edge_mc(uvbuf+16,
331  ptr_cr, s->uvlinesize,
332  9, 9+field_based,
333  uvsrc_x, uvsrc_y<<field_based,
334  s->h_edge_pos>>1, s->v_edge_pos>>1);
335  ptr_cb= uvbuf;
336  ptr_cr= uvbuf+16;
337  }
338  }
339 
340  if(bottom_field){ //FIXME use this for field pix too instead of the obnoxious hack which changes picture.data
341  dest_y += s->linesize;
342  dest_cb+= s->uvlinesize;
343  dest_cr+= s->uvlinesize;
344  }
345 
346  if(field_select){
347  ptr_y += s->linesize;
348  ptr_cb+= s->uvlinesize;
349  ptr_cr+= s->uvlinesize;
350  }
351 
352  pix_op[0][dxy](dest_y, ptr_y, linesize, h);
353 
354  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
355  pix_op[s->chroma_x_shift][uvdxy]
356  (dest_cb, ptr_cb, uvlinesize, h >> s->chroma_y_shift);
357  pix_op[s->chroma_x_shift][uvdxy]
358  (dest_cr, ptr_cr, uvlinesize, h >> s->chroma_y_shift);
359  }
360  if(!is_mpeg12 && (CONFIG_H261_ENCODER || CONFIG_H261_DECODER) &&
361  s->out_format == FMT_H261){
363  }
364 }
365 /* apply one mpeg motion vector to the three components */
366 static av_always_inline
368  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
369  int field_based, int bottom_field, int field_select,
370  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
371  int motion_x, int motion_y, int h, int mb_y)
372 {
373 #if !CONFIG_SMALL
374  if(s->out_format == FMT_MPEG1)
375  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
376  bottom_field, field_select, ref_picture, pix_op,
377  motion_x, motion_y, h, 1, mb_y);
378  else
379 #endif
380  mpeg_motion_internal(s, dest_y, dest_cb, dest_cr, field_based,
381  bottom_field, field_select, ref_picture, pix_op,
382  motion_x, motion_y, h, 0, mb_y);
383 }
384 
385 //FIXME move to dsputil, avg variant, 16x16 version
386 static inline void put_obmc(uint8_t *dst, uint8_t *src[5], int stride){
387  int x;
388  uint8_t * const top = src[1];
389  uint8_t * const left = src[2];
390  uint8_t * const mid = src[0];
391  uint8_t * const right = src[3];
392  uint8_t * const bottom= src[4];
393 #define OBMC_FILTER(x, t, l, m, r, b)\
394  dst[x]= (t*top[x] + l*left[x] + m*mid[x] + r*right[x] + b*bottom[x] + 4)>>3
395 #define OBMC_FILTER4(x, t, l, m, r, b)\
396  OBMC_FILTER(x , t, l, m, r, b);\
397  OBMC_FILTER(x+1 , t, l, m, r, b);\
398  OBMC_FILTER(x +stride, t, l, m, r, b);\
399  OBMC_FILTER(x+1+stride, t, l, m, r, b);
400 
401  x=0;
402  OBMC_FILTER (x , 2, 2, 4, 0, 0);
403  OBMC_FILTER (x+1, 2, 1, 5, 0, 0);
404  OBMC_FILTER4(x+2, 2, 1, 5, 0, 0);
405  OBMC_FILTER4(x+4, 2, 0, 5, 1, 0);
406  OBMC_FILTER (x+6, 2, 0, 5, 1, 0);
407  OBMC_FILTER (x+7, 2, 0, 4, 2, 0);
408  x+= stride;
409  OBMC_FILTER (x , 1, 2, 5, 0, 0);
410  OBMC_FILTER (x+1, 1, 2, 5, 0, 0);
411  OBMC_FILTER (x+6, 1, 0, 5, 2, 0);
412  OBMC_FILTER (x+7, 1, 0, 5, 2, 0);
413  x+= stride;
414  OBMC_FILTER4(x , 1, 2, 5, 0, 0);
415  OBMC_FILTER4(x+2, 1, 1, 6, 0, 0);
416  OBMC_FILTER4(x+4, 1, 0, 6, 1, 0);
417  OBMC_FILTER4(x+6, 1, 0, 5, 2, 0);
418  x+= 2*stride;
419  OBMC_FILTER4(x , 0, 2, 5, 0, 1);
420  OBMC_FILTER4(x+2, 0, 1, 6, 0, 1);
421  OBMC_FILTER4(x+4, 0, 0, 6, 1, 1);
422  OBMC_FILTER4(x+6, 0, 0, 5, 2, 1);
423  x+= 2*stride;
424  OBMC_FILTER (x , 0, 2, 5, 0, 1);
425  OBMC_FILTER (x+1, 0, 2, 5, 0, 1);
426  OBMC_FILTER4(x+2, 0, 1, 5, 0, 2);
427  OBMC_FILTER4(x+4, 0, 0, 5, 1, 2);
428  OBMC_FILTER (x+6, 0, 0, 5, 2, 1);
429  OBMC_FILTER (x+7, 0, 0, 5, 2, 1);
430  x+= stride;
431  OBMC_FILTER (x , 0, 2, 4, 0, 2);
432  OBMC_FILTER (x+1, 0, 1, 5, 0, 2);
433  OBMC_FILTER (x+6, 0, 0, 5, 1, 2);
434  OBMC_FILTER (x+7, 0, 0, 4, 2, 2);
435 }
436 
437 /* obmc for 1 8x8 luma block */
438 static inline void obmc_motion(MpegEncContext *s,
439  uint8_t *dest, uint8_t *src,
440  int src_x, int src_y,
441  op_pixels_func *pix_op,
442  int16_t mv[5][2]/* mid top left right bottom*/)
443 #define MID 0
444 {
445  int i;
446  uint8_t *ptr[5];
447 
448  assert(s->quarter_sample==0);
449 
450  for(i=0; i<5; i++){
451  if(i && mv[i][0]==mv[MID][0] && mv[i][1]==mv[MID][1]){
452  ptr[i]= ptr[MID];
453  }else{
454  ptr[i]= s->obmc_scratchpad + 8*(i&1) + s->linesize*8*(i>>1);
455  hpel_motion(s, ptr[i], src, 0, 0,
456  src_x, src_y,
457  s->width, s->height, s->linesize,
458  s->h_edge_pos, s->v_edge_pos,
459  8, 8, pix_op,
460  mv[i][0], mv[i][1]);
461  }
462  }
463 
464  put_obmc(dest, ptr, s->linesize);
465 }
466 
467 static inline void qpel_motion(MpegEncContext *s,
468  uint8_t *dest_y, uint8_t *dest_cb, uint8_t *dest_cr,
469  int field_based, int bottom_field, int field_select,
470  uint8_t **ref_picture, op_pixels_func (*pix_op)[4],
471  qpel_mc_func (*qpix_op)[16],
472  int motion_x, int motion_y, int h)
473 {
474  uint8_t *ptr_y, *ptr_cb, *ptr_cr;
475  int dxy, uvdxy, mx, my, src_x, src_y, uvsrc_x, uvsrc_y, v_edge_pos, linesize, uvlinesize;
476 
477  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
478  src_x = s->mb_x * 16 + (motion_x >> 2);
479  src_y = s->mb_y * (16 >> field_based) + (motion_y >> 2);
480 
481  v_edge_pos = s->v_edge_pos >> field_based;
482  linesize = s->linesize << field_based;
483  uvlinesize = s->uvlinesize << field_based;
484 
485  if(field_based){
486  mx= motion_x/2;
487  my= motion_y>>1;
489  static const int rtab[8]= {0,0,1,1,0,0,0,1};
490  mx= (motion_x>>1) + rtab[motion_x&7];
491  my= (motion_y>>1) + rtab[motion_y&7];
492  }else if(s->workaround_bugs&FF_BUG_QPEL_CHROMA){
493  mx= (motion_x>>1)|(motion_x&1);
494  my= (motion_y>>1)|(motion_y&1);
495  }else{
496  mx= motion_x/2;
497  my= motion_y/2;
498  }
499  mx= (mx>>1)|(mx&1);
500  my= (my>>1)|(my&1);
501 
502  uvdxy= (mx&1) | ((my&1)<<1);
503  mx>>=1;
504  my>>=1;
505 
506  uvsrc_x = s->mb_x * 8 + mx;
507  uvsrc_y = s->mb_y * (8 >> field_based) + my;
508 
509  ptr_y = ref_picture[0] + src_y * linesize + src_x;
510  ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
511  ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
512 
513  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 16, 0)
514  || (unsigned)src_y > FFMAX( v_edge_pos - (motion_y&3) - h , 0)){
515  s->dsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y, s->linesize,
516  17, 17+field_based, src_x, src_y<<field_based,
517  s->h_edge_pos, s->v_edge_pos);
518  ptr_y= s->edge_emu_buffer;
519  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
520  uint8_t *uvbuf= s->edge_emu_buffer + 18*s->linesize;
521  s->dsp.emulated_edge_mc(uvbuf, ptr_cb, s->uvlinesize,
522  9, 9 + field_based,
523  uvsrc_x, uvsrc_y<<field_based,
524  s->h_edge_pos>>1, s->v_edge_pos>>1);
525  s->dsp.emulated_edge_mc(uvbuf + 16, ptr_cr, s->uvlinesize,
526  9, 9 + field_based,
527  uvsrc_x, uvsrc_y<<field_based,
528  s->h_edge_pos>>1, s->v_edge_pos>>1);
529  ptr_cb= uvbuf;
530  ptr_cr= uvbuf + 16;
531  }
532  }
533 
534  if(!field_based)
535  qpix_op[0][dxy](dest_y, ptr_y, linesize);
536  else{
537  if(bottom_field){
538  dest_y += s->linesize;
539  dest_cb+= s->uvlinesize;
540  dest_cr+= s->uvlinesize;
541  }
542 
543  if(field_select){
544  ptr_y += s->linesize;
545  ptr_cb += s->uvlinesize;
546  ptr_cr += s->uvlinesize;
547  }
548  //damn interlaced mode
549  //FIXME boundary mirroring is not exactly correct here
550  qpix_op[1][dxy](dest_y , ptr_y , linesize);
551  qpix_op[1][dxy](dest_y+8, ptr_y+8, linesize);
552  }
553  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY)){
554  pix_op[1][uvdxy](dest_cr, ptr_cr, uvlinesize, h >> 1);
555  pix_op[1][uvdxy](dest_cb, ptr_cb, uvlinesize, h >> 1);
556  }
557 }
558 
562 static inline void chroma_4mv_motion(MpegEncContext *s,
563  uint8_t *dest_cb, uint8_t *dest_cr,
564  uint8_t **ref_picture,
565  op_pixels_func *pix_op,
566  int mx, int my){
567  int dxy, emu=0, src_x, src_y, offset;
568  uint8_t *ptr;
569 
570  /* In case of 8X8, we construct a single chroma motion vector
571  with a special rounding */
572  mx= ff_h263_round_chroma(mx);
573  my= ff_h263_round_chroma(my);
574 
575  dxy = ((my & 1) << 1) | (mx & 1);
576  mx >>= 1;
577  my >>= 1;
578 
579  src_x = s->mb_x * 8 + mx;
580  src_y = s->mb_y * 8 + my;
581  src_x = av_clip(src_x, -8, (s->width >> 1));
582  if (src_x == (s->width >> 1))
583  dxy &= ~1;
584  src_y = av_clip(src_y, -8, (s->height >> 1));
585  if (src_y == (s->height >> 1))
586  dxy &= ~2;
587 
588  offset = src_y * s->uvlinesize + src_x;
589  ptr = ref_picture[1] + offset;
590  if(s->flags&CODEC_FLAG_EMU_EDGE){
591  if( (unsigned)src_x > FFMAX((s->h_edge_pos>>1) - (dxy &1) - 8, 0)
592  || (unsigned)src_y > FFMAX((s->v_edge_pos>>1) - (dxy>>1) - 8, 0)){
594  9, 9, src_x, src_y,
595  s->h_edge_pos>>1, s->v_edge_pos>>1);
596  ptr= s->edge_emu_buffer;
597  emu=1;
598  }
599  }
600  pix_op[dxy](dest_cb, ptr, s->uvlinesize, 8);
601 
602  ptr = ref_picture[2] + offset;
603  if(emu){
605  9, 9, src_x, src_y,
606  s->h_edge_pos>>1, s->v_edge_pos>>1);
607  ptr= s->edge_emu_buffer;
608  }
609  pix_op[dxy](dest_cr, ptr, s->uvlinesize, 8);
610 }
611 
612 static inline void prefetch_motion(MpegEncContext *s, uint8_t **pix, int dir){
613  /* fetch pixels for estimated mv 4 macroblocks ahead
614  * optimized for 64byte cache lines */
615  const int shift = s->quarter_sample ? 2 : 1;
616  const int mx= (s->mv[dir][0][0]>>shift) + 16*s->mb_x + 8;
617  const int my= (s->mv[dir][0][1]>>shift) + 16*s->mb_y;
618  int off= mx + (my + (s->mb_x&3)*4)*s->linesize + 64;
619  s->dsp.prefetch(pix[0]+off, s->linesize, 4);
620  off= (mx>>1) + ((my>>1) + (s->mb_x&7))*s->uvlinesize + 64;
621  s->dsp.prefetch(pix[1]+off, pix[2]-pix[1], 2);
622 }
623 
637  uint8_t *dest_y, uint8_t *dest_cb,
638  uint8_t *dest_cr, int dir,
639  uint8_t **ref_picture,
640  op_pixels_func (*pix_op)[4],
641  qpel_mc_func (*qpix_op)[16], int is_mpeg12)
642 {
643  int dxy, mx, my, src_x, src_y, motion_x, motion_y;
644  int mb_x, mb_y, i;
645  uint8_t *ptr, *dest;
646 
647  mb_x = s->mb_x;
648  mb_y = s->mb_y;
649 
650  prefetch_motion(s, ref_picture, dir);
651 
652  if(!is_mpeg12 && s->obmc && s->pict_type != AV_PICTURE_TYPE_B){
653  int16_t mv_cache[4][4][2];
654  const int xy= s->mb_x + s->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 
658  assert(!s->mb_skipped);
659 
660  memcpy(mv_cache[1][1], s->current_picture.f.motion_val[0][mot_xy ], sizeof(int16_t) * 4);
661  memcpy(mv_cache[2][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
662  memcpy(mv_cache[3][1], s->current_picture.f.motion_val[0][mot_xy + mot_stride], sizeof(int16_t) * 4);
663 
664  if (mb_y == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - s->mb_stride])) {
665  memcpy(mv_cache[0][1], mv_cache[1][1], sizeof(int16_t)*4);
666  }else{
667  memcpy(mv_cache[0][1], s->current_picture.f.motion_val[0][mot_xy - mot_stride], sizeof(int16_t) * 4);
668  }
669 
670  if (mb_x == 0 || IS_INTRA(s->current_picture.f.mb_type[xy - 1])) {
671  AV_COPY32(mv_cache[1][0], mv_cache[1][1]);
672  AV_COPY32(mv_cache[2][0], mv_cache[2][1]);
673  }else{
674  AV_COPY32(mv_cache[1][0], s->current_picture.f.motion_val[0][mot_xy - 1]);
675  AV_COPY32(mv_cache[2][0], s->current_picture.f.motion_val[0][mot_xy - 1 + mot_stride]);
676  }
677 
678  if (mb_x + 1 >= s->mb_width || IS_INTRA(s->current_picture.f.mb_type[xy + 1])) {
679  AV_COPY32(mv_cache[1][3], mv_cache[1][2]);
680  AV_COPY32(mv_cache[2][3], mv_cache[2][2]);
681  }else{
682  AV_COPY32(mv_cache[1][3], s->current_picture.f.motion_val[0][mot_xy + 2]);
683  AV_COPY32(mv_cache[2][3], s->current_picture.f.motion_val[0][mot_xy + 2 + mot_stride]);
684  }
685 
686  mx = 0;
687  my = 0;
688  for(i=0;i<4;i++) {
689  const int x= (i&1)+1;
690  const int y= (i>>1)+1;
691  int16_t mv[5][2]= {
692  {mv_cache[y][x ][0], mv_cache[y][x ][1]},
693  {mv_cache[y-1][x][0], mv_cache[y-1][x][1]},
694  {mv_cache[y][x-1][0], mv_cache[y][x-1][1]},
695  {mv_cache[y][x+1][0], mv_cache[y][x+1][1]},
696  {mv_cache[y+1][x][0], mv_cache[y+1][x][1]}};
697  //FIXME cleanup
698  obmc_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
699  ref_picture[0],
700  mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
701  pix_op[1],
702  mv);
703 
704  mx += mv[0][0];
705  my += mv[0][1];
706  }
707  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
708  chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
709 
710  return;
711  }
712 
713  switch(s->mv_type) {
714  case MV_TYPE_16X16:
715  if(s->mcsel){
716  if(s->real_sprite_warping_points==1){
717  gmc1_motion(s, dest_y, dest_cb, dest_cr,
718  ref_picture);
719  }else{
720  gmc_motion(s, dest_y, dest_cb, dest_cr,
721  ref_picture);
722  }
723  }else if(!is_mpeg12 && s->quarter_sample){
724  qpel_motion(s, dest_y, dest_cb, dest_cr,
725  0, 0, 0,
726  ref_picture, pix_op, qpix_op,
727  s->mv[dir][0][0], s->mv[dir][0][1], 16);
728  } else if (!is_mpeg12 && (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) &&
729  s->mspel && s->codec_id == CODEC_ID_WMV2) {
730  ff_mspel_motion(s, dest_y, dest_cb, dest_cr,
731  ref_picture, pix_op,
732  s->mv[dir][0][0], s->mv[dir][0][1], 16);
733  }else
734  {
735  mpeg_motion(s, dest_y, dest_cb, dest_cr,
736  0, 0, 0,
737  ref_picture, pix_op,
738  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y);
739  }
740  break;
741  case MV_TYPE_8X8:
742  if (!is_mpeg12) {
743  mx = 0;
744  my = 0;
745  if(s->quarter_sample){
746  for(i=0;i<4;i++) {
747  motion_x = s->mv[dir][i][0];
748  motion_y = s->mv[dir][i][1];
749 
750  dxy = ((motion_y & 3) << 2) | (motion_x & 3);
751  src_x = mb_x * 16 + (motion_x >> 2) + (i & 1) * 8;
752  src_y = mb_y * 16 + (motion_y >> 2) + (i >>1) * 8;
753 
754  /* WARNING: do no forget half pels */
755  src_x = av_clip(src_x, -16, s->width);
756  if (src_x == s->width)
757  dxy &= ~3;
758  src_y = av_clip(src_y, -16, s->height);
759  if (src_y == s->height)
760  dxy &= ~12;
761 
762  ptr = ref_picture[0] + (src_y * s->linesize) + (src_x);
763  if(s->flags&CODEC_FLAG_EMU_EDGE){
764  if( (unsigned)src_x > FFMAX(s->h_edge_pos - (motion_x&3) - 8, 0)
765  || (unsigned)src_y > FFMAX(s->v_edge_pos - (motion_y&3) - 8, 0)){
767  s->linesize, 9, 9,
768  src_x, src_y,
769  s->h_edge_pos, s->v_edge_pos);
770  ptr= s->edge_emu_buffer;
771  }
772  }
773  dest = dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize;
774  qpix_op[1][dxy](dest, ptr, s->linesize);
775 
776  mx += s->mv[dir][i][0]/2;
777  my += s->mv[dir][i][1]/2;
778  }
779  }else{
780  for(i=0;i<4;i++) {
781  hpel_motion(s, dest_y + ((i & 1) * 8) + (i >> 1) * 8 * s->linesize,
782  ref_picture[0], 0, 0,
783  mb_x * 16 + (i & 1) * 8, mb_y * 16 + (i >>1) * 8,
784  s->width, s->height, s->linesize,
785  s->h_edge_pos, s->v_edge_pos,
786  8, 8, pix_op[1],
787  s->mv[dir][i][0], s->mv[dir][i][1]);
788 
789  mx += s->mv[dir][i][0];
790  my += s->mv[dir][i][1];
791  }
792  }
793 
794  if(!CONFIG_GRAY || !(s->flags&CODEC_FLAG_GRAY))
795  chroma_4mv_motion(s, dest_cb, dest_cr, ref_picture, pix_op[1], mx, my);
796  }
797  break;
798  case MV_TYPE_FIELD:
799  if (s->picture_structure == PICT_FRAME) {
800  if(!is_mpeg12 && s->quarter_sample){
801  for(i=0; i<2; i++){
802  qpel_motion(s, dest_y, dest_cb, dest_cr,
803  1, i, s->field_select[dir][i],
804  ref_picture, pix_op, qpix_op,
805  s->mv[dir][i][0], s->mv[dir][i][1], 8);
806  }
807  }else{
808  /* top field */
809  mpeg_motion(s, dest_y, dest_cb, dest_cr,
810  1, 0, s->field_select[dir][0],
811  ref_picture, pix_op,
812  s->mv[dir][0][0], s->mv[dir][0][1], 8, mb_y);
813  /* bottom field */
814  mpeg_motion(s, dest_y, dest_cb, dest_cr,
815  1, 1, s->field_select[dir][1],
816  ref_picture, pix_op,
817  s->mv[dir][1][0], s->mv[dir][1][1], 8, mb_y);
818  }
819  } else {
820  if(s->picture_structure != s->field_select[dir][0] + 1 && s->pict_type != AV_PICTURE_TYPE_B && !s->first_field){
821  ref_picture = s->current_picture_ptr->f.data;
822  }
823 
824  mpeg_motion(s, dest_y, dest_cb, dest_cr,
825  0, 0, s->field_select[dir][0],
826  ref_picture, pix_op,
827  s->mv[dir][0][0], s->mv[dir][0][1], 16, mb_y>>1);
828  }
829  break;
830  case MV_TYPE_16X8:
831  for(i=0; i<2; i++){
832  uint8_t ** ref2picture;
833 
834  if(s->picture_structure == s->field_select[dir][i] + 1
835  || s->pict_type == AV_PICTURE_TYPE_B || s->first_field){
836  ref2picture= ref_picture;
837  }else{
838  ref2picture = s->current_picture_ptr->f.data;
839  }
840 
841  mpeg_motion(s, dest_y, dest_cb, dest_cr,
842  0, 0, s->field_select[dir][i],
843  ref2picture, pix_op,
844  s->mv[dir][i][0], s->mv[dir][i][1] + 16*i, 8, mb_y>>1);
845 
846  dest_y += 16*s->linesize;
847  dest_cb+= (16>>s->chroma_y_shift)*s->uvlinesize;
848  dest_cr+= (16>>s->chroma_y_shift)*s->uvlinesize;
849  }
850  break;
851  case MV_TYPE_DMV:
852  if(s->picture_structure == PICT_FRAME){
853  for(i=0; i<2; i++){
854  int j;
855  for(j=0; j<2; j++){
856  mpeg_motion(s, dest_y, dest_cb, dest_cr,
857  1, j, j^i,
858  ref_picture, pix_op,
859  s->mv[dir][2*i + j][0], s->mv[dir][2*i + j][1], 8, mb_y);
860  }
861  pix_op = s->dsp.avg_pixels_tab;
862  }
863  }else{
864  for(i=0; i<2; i++){
865  mpeg_motion(s, dest_y, dest_cb, dest_cr,
866  0, 0, s->picture_structure != i+1,
867  ref_picture, pix_op,
868  s->mv[dir][2*i][0],s->mv[dir][2*i][1],16, mb_y>>1);
869 
870  // after put we make avg of the same block
871  pix_op=s->dsp.avg_pixels_tab;
872 
873  //opposite parity is always in the same frame if this is second field
874  if(!s->first_field){
875  ref_picture = s->current_picture_ptr->f.data;
876  }
877  }
878  }
879  break;
880  default: assert(0);
881  }
882 }
883 
884 static inline void MPV_motion(MpegEncContext *s,
885  uint8_t *dest_y, uint8_t *dest_cb,
886  uint8_t *dest_cr, int dir,
887  uint8_t **ref_picture,
888  op_pixels_func (*pix_op)[4],
889  qpel_mc_func (*qpix_op)[16])
890 {
891 #if !CONFIG_SMALL
892  if(s->out_format == FMT_MPEG1)
893  MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
894  ref_picture, pix_op, qpix_op, 1);
895  else
896 #endif
897  MPV_motion_internal(s, dest_y, dest_cb, dest_cr, dir,
898  ref_picture, pix_op, qpix_op, 0);
899 }
900 #endif /* AVCODEC_MPEGVIDEO_COMMON_H */