msmpeg4enc.c
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1 /*
2  * MSMPEG4 encoder backend
3  * Copyright (c) 2001 Fabrice Bellard
4  * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
5  *
6  * msmpeg4v1 & v2 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 #include <stdint.h>
31 #include <string.h>
32 
33 #include "libavutil/avutil.h"
34 #include "libavutil/mem.h"
35 #include "mpegvideo.h"
36 #include "msmpeg4.h"
37 #include "h263.h"
38 #include "mpeg4video.h"
39 #include "msmpeg4.h"
40 #include "msmpeg4data.h"
41 #include "put_bits.h"
42 #include "rl.h"
43 #include "vc1data.h"
44 
46 
47 /* build the table which associate a (x,y) motion vector to a vlc */
48 static void init_mv_table(MVTable *tab)
49 {
50  int i, x, y;
51 
52  tab->table_mv_index = av_malloc(sizeof(uint16_t) * 4096);
53  /* mark all entries as not used */
54  for(i=0;i<4096;i++)
55  tab->table_mv_index[i] = tab->n;
56 
57  for(i=0;i<tab->n;i++) {
58  x = tab->table_mvx[i];
59  y = tab->table_mvy[i];
60  tab->table_mv_index[(x << 6) | y] = i;
61  }
62 }
63 
65 {
66  if (n == 0) {
67  put_bits(pb, 1, 0);
68  } else {
69  put_bits(pb, 1, 1);
70  put_bits(pb, 1, (n >= 2));
71  }
72 }
73 
74 static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra){
75  int size=0;
76  int code;
77  int run_diff= intra ? 0 : 1;
78 
79  code = get_rl_index(rl, last, run, level);
80  size+= rl->table_vlc[code][1];
81  if (code == rl->n) {
82  int level1, run1;
83 
84  level1 = level - rl->max_level[last][run];
85  if (level1 < 1)
86  goto esc2;
87  code = get_rl_index(rl, last, run, level1);
88  if (code == rl->n) {
89  esc2:
90  size++;
91  if (level > MAX_LEVEL)
92  goto esc3;
93  run1 = run - rl->max_run[last][level] - run_diff;
94  if (run1 < 0)
95  goto esc3;
96  code = get_rl_index(rl, last, run1, level);
97  if (code == rl->n) {
98  esc3:
99  /* third escape */
100  size+=1+1+6+8;
101  } else {
102  /* second escape */
103  size+= 1+1+ rl->table_vlc[code][1];
104  }
105  } else {
106  /* first escape */
107  size+= 1+1+ rl->table_vlc[code][1];
108  }
109  } else {
110  size++;
111  }
112  return size;
113 }
114 
116 {
117  static int init_done=0;
118  int i;
119 
121  if(s->msmpeg4_version>=4){
122  s->min_qcoeff= -255;
123  s->max_qcoeff= 255;
124  }
125 
126  if (!init_done) {
127  /* init various encoding tables */
128  init_done = 1;
131  for(i=0;i<NB_RL_TABLES;i++)
133 
134  for(i=0; i<NB_RL_TABLES; i++){
135  int level;
136  for (level = 1; level <= MAX_LEVEL; level++) {
137  int run;
138  for(run=0; run<=MAX_RUN; run++){
139  int last;
140  for(last=0; last<2; last++){
141  rl_length[i][level][run][last]= get_size_of_code(s, &ff_rl_table[ i], last, run, level, 0);
142  }
143  }
144  }
145  }
146  }
147 }
148 
150 {
151  int i;
152  int best =-1, best_size =9999999;
153  int chroma_best=-1, best_chroma_size=9999999;
154 
155  for(i=0; i<3; i++){
156  int level;
157  int chroma_size=0;
158  int size=0;
159 
160  if(i>0){// ;)
161  size++;
162  chroma_size++;
163  }
164  for(level=0; level<=MAX_LEVEL; level++){
165  int run;
166  for(run=0; run<=MAX_RUN; run++){
167  int last;
168  const int last_size= size + chroma_size;
169  for(last=0; last<2; last++){
170  int inter_count = s->ac_stats[0][0][level][run][last] + s->ac_stats[0][1][level][run][last];
171  int intra_luma_count = s->ac_stats[1][0][level][run][last];
172  int intra_chroma_count= s->ac_stats[1][1][level][run][last];
173 
175  size += intra_luma_count *rl_length[i ][level][run][last];
176  chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
177  }else{
178  size+= intra_luma_count *rl_length[i ][level][run][last]
179  +intra_chroma_count*rl_length[i+3][level][run][last]
180  +inter_count *rl_length[i+3][level][run][last];
181  }
182  }
183  if(last_size == size+chroma_size) break;
184  }
185  }
186  if(size<best_size){
187  best_size= size;
188  best= i;
189  }
190  if(chroma_size<best_chroma_size){
191  best_chroma_size= chroma_size;
192  chroma_best= i;
193  }
194  }
195 
196  if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
197 
198  memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2);
199 
200  s->rl_table_index = best;
201  s->rl_chroma_table_index= chroma_best;
202 
203  if(s->pict_type != s->last_non_b_pict_type){
204  s->rl_table_index= 2;
206  s->rl_chroma_table_index= 1;
207  else
208  s->rl_chroma_table_index= 2;
209  }
210 
211 }
212 
213 /* write MSMPEG4 compatible frame header */
215 {
216  find_best_tables(s);
217 
219  put_bits(&s->pb, 2, s->pict_type - 1);
220 
221  put_bits(&s->pb, 5, s->qscale);
222  if(s->msmpeg4_version<=2){
223  s->rl_table_index = 2;
224  s->rl_chroma_table_index = 2;
225  }
226 
227  s->dc_table_index = 1;
228  s->mv_table_index = 1; /* only if P frame */
229  s->use_skip_mb_code = 1; /* only if P frame */
230  s->per_mb_rl_table = 0;
231  if(s->msmpeg4_version==4)
232  s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P);
233  av_dlog(s, "%d %d %d %d %d\n", s->pict_type, s->bit_rate,
234  s->inter_intra_pred, s->width, s->height);
235 
236  if (s->pict_type == AV_PICTURE_TYPE_I) {
237  s->slice_height= s->mb_height/1;
238  put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
239 
240  if(s->msmpeg4_version==4){
242  if(s->bit_rate>MBAC_BITRATE)
243  put_bits(&s->pb, 1, s->per_mb_rl_table);
244  }
245 
246  if(s->msmpeg4_version>2){
247  if(!s->per_mb_rl_table){
250  }
251 
252  put_bits(&s->pb, 1, s->dc_table_index);
253  }
254  } else {
255  put_bits(&s->pb, 1, s->use_skip_mb_code);
256 
257  if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
258  put_bits(&s->pb, 1, s->per_mb_rl_table);
259 
260  if(s->msmpeg4_version>2){
261  if(!s->per_mb_rl_table)
263 
264  put_bits(&s->pb, 1, s->dc_table_index);
265 
266  put_bits(&s->pb, 1, s->mv_table_index);
267  }
268  }
269 
270  s->esc3_level_length= 0;
271  s->esc3_run_length= 0;
272 }
273 
275 {
276  put_bits(&s->pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
277 
278  put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
279 
280  if(s->msmpeg4_version>=3)
281  put_bits(&s->pb, 1, s->flipflop_rounding);
282  else
283  assert(s->flipflop_rounding==0);
284 }
285 
287  int mx, int my)
288 {
289  int code;
290  MVTable *mv;
291 
292  /* modulo encoding */
293  /* WARNING : you cannot reach all the MVs even with the modulo
294  encoding. This is a somewhat strange compromise they took !!! */
295  if (mx <= -64)
296  mx += 64;
297  else if (mx >= 64)
298  mx -= 64;
299  if (my <= -64)
300  my += 64;
301  else if (my >= 64)
302  my -= 64;
303 
304  mx += 32;
305  my += 32;
306 #if 0
307  if ((unsigned)mx >= 64 ||
308  (unsigned)my >= 64)
309  av_log(s->avctx, AV_LOG_ERROR, "error mx=%d my=%d\n", mx, my);
310 #endif
311  mv = &ff_mv_tables[s->mv_table_index];
312 
313  code = mv->table_mv_index[(mx << 6) | my];
314  put_bits(&s->pb,
315  mv->table_mv_bits[code],
316  mv->table_mv_code[code]);
317  if (code == mv->n) {
318  /* escape : code literally */
319  put_bits(&s->pb, 6, mx);
320  put_bits(&s->pb, 6, my);
321  }
322 }
323 
325  if (s->mb_x == 0) {
326  if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
327  if(s->msmpeg4_version < 4){
329  }
330  s->first_slice_line = 1;
331  } else {
332  s->first_slice_line = 0;
333  }
334  }
335 }
336 
337 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
338 {
339  int range, bit_size, sign, code, bits;
340 
341  if (val == 0) {
342  /* zero vector */
343  code = 0;
344  put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
345  } else {
346  bit_size = s->f_code - 1;
347  range = 1 << bit_size;
348  if (val <= -64)
349  val += 64;
350  else if (val >= 64)
351  val -= 64;
352 
353  if (val >= 0) {
354  sign = 0;
355  } else {
356  val = -val;
357  sign = 1;
358  }
359  val--;
360  code = (val >> bit_size) + 1;
361  bits = val & (range - 1);
362 
363  put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
364  if (bit_size > 0) {
365  put_bits(&s->pb, bit_size, bits);
366  }
367  }
368 }
369 
371  DCTELEM block[6][64],
372  int motion_x, int motion_y)
373 {
374  int cbp, coded_cbp, i;
375  int pred_x, pred_y;
376  uint8_t *coded_block;
377 
379 
380  if (!s->mb_intra) {
381  /* compute cbp */
382  cbp = 0;
383  for (i = 0; i < 6; i++) {
384  if (s->block_last_index[i] >= 0)
385  cbp |= 1 << (5 - i);
386  }
387  if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
388  /* skip macroblock */
389  put_bits(&s->pb, 1, 1);
390  s->last_bits++;
391  s->misc_bits++;
392  s->skip_count++;
393 
394  return;
395  }
396  if (s->use_skip_mb_code)
397  put_bits(&s->pb, 1, 0); /* mb coded */
398 
399  if(s->msmpeg4_version<=2){
400  put_bits(&s->pb,
401  ff_v2_mb_type[cbp&3][1],
402  ff_v2_mb_type[cbp&3][0]);
403  if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
404  else coded_cbp= cbp;
405 
406  put_bits(&s->pb,
407  ff_h263_cbpy_tab[coded_cbp>>2][1],
408  ff_h263_cbpy_tab[coded_cbp>>2][0]);
409 
410  s->misc_bits += get_bits_diff(s);
411 
412  ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
413  msmpeg4v2_encode_motion(s, motion_x - pred_x);
414  msmpeg4v2_encode_motion(s, motion_y - pred_y);
415  }else{
416  put_bits(&s->pb,
417  ff_table_mb_non_intra[cbp + 64][1],
418  ff_table_mb_non_intra[cbp + 64][0]);
419 
420  s->misc_bits += get_bits_diff(s);
421 
422  /* motion vector */
423  ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
424  ff_msmpeg4_encode_motion(s, motion_x - pred_x,
425  motion_y - pred_y);
426  }
427 
428  s->mv_bits += get_bits_diff(s);
429 
430  for (i = 0; i < 6; i++) {
431  ff_msmpeg4_encode_block(s, block[i], i);
432  }
433  s->p_tex_bits += get_bits_diff(s);
434  } else {
435  /* compute cbp */
436  cbp = 0;
437  coded_cbp = 0;
438  for (i = 0; i < 6; i++) {
439  int val, pred;
440  val = (s->block_last_index[i] >= 1);
441  cbp |= val << (5 - i);
442  if (i < 4) {
443  /* predict value for close blocks only for luma */
444  pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
445  *coded_block = val;
446  val = val ^ pred;
447  }
448  coded_cbp |= val << (5 - i);
449  }
450 
451  if(s->msmpeg4_version<=2){
452  if (s->pict_type == AV_PICTURE_TYPE_I) {
453  put_bits(&s->pb,
454  ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
455  } else {
456  if (s->use_skip_mb_code)
457  put_bits(&s->pb, 1, 0); /* mb coded */
458  put_bits(&s->pb,
459  ff_v2_mb_type[(cbp&3) + 4][1],
460  ff_v2_mb_type[(cbp&3) + 4][0]);
461  }
462  put_bits(&s->pb, 1, 0); /* no AC prediction yet */
463  put_bits(&s->pb,
464  ff_h263_cbpy_tab[cbp>>2][1],
465  ff_h263_cbpy_tab[cbp>>2][0]);
466  }else{
467  if (s->pict_type == AV_PICTURE_TYPE_I) {
468  put_bits(&s->pb,
469  ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
470  } else {
471  if (s->use_skip_mb_code)
472  put_bits(&s->pb, 1, 0); /* mb coded */
473  put_bits(&s->pb,
474  ff_table_mb_non_intra[cbp][1],
475  ff_table_mb_non_intra[cbp][0]);
476  }
477  put_bits(&s->pb, 1, 0); /* no AC prediction yet */
478  if(s->inter_intra_pred){
479  s->h263_aic_dir=0;
481  }
482  }
483  s->misc_bits += get_bits_diff(s);
484 
485  for (i = 0; i < 6; i++) {
486  ff_msmpeg4_encode_block(s, block[i], i);
487  }
488  s->i_tex_bits += get_bits_diff(s);
489  s->i_count++;
490  }
491 }
492 
493 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
494 {
495  int sign, code;
496  int pred, extquant;
497  int extrabits = 0;
498 
499  int16_t *dc_val;
500  pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
501 
502  /* update predictor */
503  if (n < 4) {
504  *dc_val = level * s->y_dc_scale;
505  } else {
506  *dc_val = level * s->c_dc_scale;
507  }
508 
509  /* do the prediction */
510  level -= pred;
511 
512  if(s->msmpeg4_version<=2){
513  if (n < 4) {
514  put_bits(&s->pb,
515  ff_v2_dc_lum_table[level + 256][1],
516  ff_v2_dc_lum_table[level + 256][0]);
517  }else{
518  put_bits(&s->pb,
519  ff_v2_dc_chroma_table[level + 256][1],
520  ff_v2_dc_chroma_table[level + 256][0]);
521  }
522  }else{
523  sign = 0;
524  if (level < 0) {
525  level = -level;
526  sign = 1;
527  }
528  code = level;
529  if (code > DC_MAX)
530  code = DC_MAX;
531  else if( s->msmpeg4_version>=6 ) {
532  if( s->qscale == 1 ) {
533  extquant = (level + 3) & 0x3;
534  code = ((level+3)>>2);
535  } else if( s->qscale == 2 ) {
536  extquant = (level + 1) & 0x1;
537  code = ((level+1)>>1);
538  }
539  }
540 
541  if (s->dc_table_index == 0) {
542  if (n < 4) {
543  put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
544  } else {
545  put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
546  }
547  } else {
548  if (n < 4) {
549  put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
550  } else {
551  put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
552  }
553  }
554 
555  if(s->msmpeg4_version>=6 && s->qscale<=2)
556  extrabits = 3 - s->qscale;
557 
558  if (code == DC_MAX)
559  put_bits(&s->pb, 8 + extrabits, level);
560  else if(extrabits > 0)//== VC1 && s->qscale<=2
561  put_bits(&s->pb, extrabits, extquant);
562 
563  if (level != 0) {
564  put_bits(&s->pb, 1, sign);
565  }
566  }
567 }
568 
569 /* Encoding of a block. Very similar to MPEG4 except for a different
570  escape coding (same as H263) and more vlc tables.
571  */
573 {
574  int level, run, last, i, j, last_index;
575  int last_non_zero, sign, slevel;
576  int code, run_diff, dc_pred_dir;
577  const RLTable *rl;
578  const uint8_t *scantable;
579 
580  if (s->mb_intra) {
581  msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
582  i = 1;
583  if (n < 4) {
584  rl = &ff_rl_table[s->rl_table_index];
585  } else {
586  rl = &ff_rl_table[3 + s->rl_chroma_table_index];
587  }
588  run_diff = s->msmpeg4_version>=4;
589  scantable= s->intra_scantable.permutated;
590  } else {
591  i = 0;
592  rl = &ff_rl_table[3 + s->rl_table_index];
593  if(s->msmpeg4_version<=2)
594  run_diff = 0;
595  else
596  run_diff = 1;
597  scantable= s->inter_scantable.permutated;
598  }
599 
600  /* recalculate block_last_index for M$ wmv1 */
601  if(s->msmpeg4_version>=4 && s->msmpeg4_version<6 && s->block_last_index[n]>0){
602  for(last_index=63; last_index>=0; last_index--){
603  if(block[scantable[last_index]]) break;
604  }
605  s->block_last_index[n]= last_index;
606  }else
607  last_index = s->block_last_index[n];
608  /* AC coefs */
609  last_non_zero = i - 1;
610  for (; i <= last_index; i++) {
611  j = scantable[i];
612  level = block[j];
613  if (level) {
614  run = i - last_non_zero - 1;
615  last = (i == last_index);
616  sign = 0;
617  slevel = level;
618  if (level < 0) {
619  sign = 1;
620  level = -level;
621  }
622 
623  if(level<=MAX_LEVEL && run<=MAX_RUN){
624  s->ac_stats[s->mb_intra][n>3][level][run][last]++;
625  }
626 
627  s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
628 
629  code = get_rl_index(rl, last, run, level);
630  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
631  if (code == rl->n) {
632  int level1, run1;
633 
634  level1 = level - rl->max_level[last][run];
635  if (level1 < 1)
636  goto esc2;
637  code = get_rl_index(rl, last, run, level1);
638  if (code == rl->n) {
639  esc2:
640  put_bits(&s->pb, 1, 0);
641  if (level > MAX_LEVEL)
642  goto esc3;
643  run1 = run - rl->max_run[last][level] - run_diff;
644  if (run1 < 0)
645  goto esc3;
646  code = get_rl_index(rl, last, run1+1, level);
647  if (s->msmpeg4_version == 4 && code == rl->n)
648  goto esc3;
649  code = get_rl_index(rl, last, run1, level);
650  if (code == rl->n) {
651  esc3:
652  /* third escape */
653  put_bits(&s->pb, 1, 0);
654  put_bits(&s->pb, 1, last);
655  if(s->msmpeg4_version>=4){
656  if(s->esc3_level_length==0){
657  s->esc3_level_length=8;
658  s->esc3_run_length= 6;
659  //ESCLVLSZ + ESCRUNSZ
660  if(s->qscale<8)
661  put_bits(&s->pb, 6 + (s->msmpeg4_version>=6), 3);
662  else
663  put_bits(&s->pb, 8, 3);
664  }
665  put_bits(&s->pb, s->esc3_run_length, run);
666  put_bits(&s->pb, 1, sign);
667  put_bits(&s->pb, s->esc3_level_length, level);
668  }else{
669  put_bits(&s->pb, 6, run);
670  put_sbits(&s->pb, 8, slevel);
671  }
672  } else {
673  /* second escape */
674  put_bits(&s->pb, 1, 1);
675  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
676  put_bits(&s->pb, 1, sign);
677  }
678  } else {
679  /* first escape */
680  put_bits(&s->pb, 1, 1);
681  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
682  put_bits(&s->pb, 1, sign);
683  }
684  } else {
685  put_bits(&s->pb, 1, sign);
686  }
687  last_non_zero = i;
688  }
689  }
690 }
int inter_intra_pred
Definition: mpegvideo.h:610
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
Definition: mem.c:61
int size
int esc3_level_length
Definition: mpegvideo.h:606
uint32_t ff_v2_dc_lum_table[512][2]
Definition: msmpeg4data.c:32
const uint32_t ff_table_mb_non_intra[128][2]
Definition: msmpeg4data.c:61
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:174
const uint32_t ff_table0_dc_lum[120][2]
Definition: msmpeg4data.c:98
memory handling functions
uint32_t ff_v2_dc_chroma_table[512][2]
Definition: msmpeg4data.c:33
const uint8_t ff_h263_cbpy_tab[16][2]
Definition: h263data.h:85
int msmpeg4_version
0=not msmpeg4, 1=mp41, 2=mp42, 3=mp43/divx3 4=wmv1/7 5=wmv2/8
Definition: mpegvideo.h:604
int num
numerator
Definition: rational.h:44
void ff_init_rl(RLTable *rl, uint8_t static_store[2][2 *MAX_RUN+MAX_LEVEL+3])
Definition: mpegvideo.c:1250
void avpriv_align_put_bits(PutBitContext *s)
Pad the bitstream with zeros up to the next byte boundary.
Definition: bitstream.c:45
external API header
int min_qcoeff
minimum encodable coefficient
Definition: mpegvideo.h:448
mpegvideo header.
av_dlog(ac->avr,"%d samples - audio_convert: %s to %s (%s)\n", len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic?ac->func_descr_generic:ac->func_descr)
void ff_msmpeg4_encode_mb(MpegEncContext *s, DCTELEM block[6][64], int motion_x, int motion_y)
Definition: msmpeg4enc.c:370
#define NB_RL_TABLES
Definition: msmpeg4data.h:59
uint8_t permutated[64]
Definition: dsputil.h:183
uint8_t run
Definition: svq3.c:132
static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]
Definition: msmpeg4enc.c:45
int qscale
QP.
Definition: mpegvideo.h:343
RLTable.
Definition: rl.h:38
av_cold void ff_msmpeg4_common_init(MpegEncContext *s)
Definition: msmpeg4.c:114
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
Definition: h263.c:316
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1465
void ff_mpeg4_clean_buffers(MpegEncContext *s)
Definition: mpeg4video.c:43
void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: msmpeg4enc.c:214
int esc3_run_length
Definition: mpegvideo.h:607
static void init_mv_table(MVTable *tab)
Definition: msmpeg4enc.c:48
int8_t * max_run[2]
encoding & decoding
Definition: rl.h:46
VC-1 tables.
uint8_t bits
Definition: crc.c:31
const uint8_t ff_v2_intra_cbpc[4][2]
Definition: msmpeg4data.c:1813
uint8_t
uint8_t ff_static_rl_table_store[NB_RL_TABLES][2][2 *MAX_RUN+MAX_LEVEL+3]
Definition: msmpeg4data.c:34
const uint8_t ff_mvtab[33][2]
Definition: h263data.h:91
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:489
#define MBAC_BITRATE
Definition: msmpeg4.h:39
MSMPEG4 data tables.
int8_t * max_level[2]
encoding & decoding
Definition: rl.h:45
const uint32_t ff_table0_dc_chroma[120][2]
Definition: msmpeg4data.c:131
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:248
int max_qcoeff
maximum encodable coefficient
Definition: mpegvideo.h:449
static void msmpeg4_encode_dc(MpegEncContext *s, int level, int n, int *dir_ptr)
Definition: msmpeg4enc.c:493
#define MAX_LEVEL
Definition: rl.h:35
int flipflop_rounding
Definition: mpegvideo.h:603
static void find_best_tables(MpegEncContext *s)
Definition: msmpeg4enc.c:149
static int get_bits_diff(MpegEncContext *s)
Definition: mpegvideo.h:826
int last_non_b_pict_type
used for mpeg4 gmc b-frames & ratecontrol
Definition: mpegvideo.h:352
const uint16_t ff_msmp4_mb_i_table[64][2]
Definition: msmpeg4data.c:41
int rl_chroma_table_index
Definition: mpegvideo.h:598
int per_mb_rl_table
Definition: mpegvideo.h:605
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:146
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
Definition: put_bits.h:136
rl header.
void ff_msmpeg4_encode_block(MpegEncContext *s, DCTELEM *block, int n)
Definition: msmpeg4enc.c:572
int n
number of entries of table_vlc minus 1
Definition: rl.h:39
const uint8_t ff_v2_mb_type[8][2]
Definition: msmpeg4data.c:1808
static DCTELEM block[64]
Definition: dct-test.c:169
int ff_msmpeg4_pred_dc(MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)
Definition: msmpeg4.c:219
const uint8_t * table_mvx
Definition: msmpeg4data.h:42
const uint16_t(* table_vlc)[2]
Definition: rl.h:41
const uint8_t * table_mv_bits
Definition: msmpeg4data.h:41
int(* ac_stats)[2][MAX_LEVEL+1][MAX_RUN+1][2]
[mb_intra][isChroma][level][run][last]
Definition: mpegvideo.h:609
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:262
const uint32_t ff_table1_dc_chroma[120][2]
Definition: msmpeg4data.c:199
uint16_t * table_mv_index
Definition: msmpeg4data.h:44
static const float pred[4]
Definition: siprdata.h:259
static const int8_t mv[256][2]
Definition: 4xm.c:73
int first_slice_line
used in mpeg4 too to handle resync markers
Definition: mpegvideo.h:602
ScanTable intra_scantable
Definition: mpegvideo.h:267
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:216
void ff_msmpeg4_encode_ext_header(MpegEncContext *s)
Definition: msmpeg4enc.c:274
const uint16_t * table_mv_code
Definition: msmpeg4data.h:40
#define DC_MAX
Definition: msmpeg4.h:41
const uint32_t ff_table1_dc_lum[120][2]
Definition: msmpeg4data.c:166
static void msmpeg4v2_encode_motion(MpegEncContext *s, int val)
Definition: msmpeg4enc.c:337
int slice_height
in macroblocks
Definition: mpegvideo.h:601
int use_skip_mb_code
Definition: mpegvideo.h:600
MVTable ff_mv_tables[2]
Definition: msmpeg4data.c:1791
int f_code
forward MV resolution
Definition: mpegvideo.h:364
void ff_msmpeg4_code012(PutBitContext *pb, int n)
Definition: msmpeg4enc.c:64
short DCTELEM
Definition: dsputil.h:39
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:350
int bit_rate
wanted bit rate
Definition: mpegvideo.h:219
#define II_BITRATE
Definition: msmpeg4.h:38
RLTable ff_rl_table[NB_RL_TABLES]
Definition: msmpeg4data.c:607
uint8_t level
Definition: svq3.c:133
MpegEncContext.
Definition: mpegvideo.h:212
#define MAX_RUN
Definition: rl.h:34
struct AVCodecContext * avctx
Definition: mpegvideo.h:214
PutBitContext pb
bit output
Definition: mpegvideo.h:285
void ff_msmpeg4_handle_slices(MpegEncContext *s)
Definition: msmpeg4enc.c:324
void ff_msmpeg4_encode_motion(MpegEncContext *s, int mx, int my)
Definition: msmpeg4enc.c:286
av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
Definition: msmpeg4enc.c:115
int den
denominator
Definition: rational.h:45
static int get_rl_index(const RLTable *rl, int last, int run, int level)
Definition: rl.h:75
int last_bits
temp var used for calculating the above vars
Definition: mpegvideo.h:490
int rl_table_index
Definition: mpegvideo.h:597
static const struct twinvq_data tab
const uint8_t * table_mvy
Definition: msmpeg4data.h:43
ScanTable inter_scantable
if inter == intra then intra should be used to reduce tha cache usage
Definition: mpegvideo.h:266
int ff_msmpeg4_coded_block_pred(MpegEncContext *s, int n, uint8_t **coded_block_ptr)
Definition: msmpeg4.c:164
static int get_size_of_code(MpegEncContext *s, RLTable *rl, int last, int run, int level, int intra)
Definition: msmpeg4enc.c:74
int mv_table_index
Definition: mpegvideo.h:596
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
Definition: mpegvideo.h:513
const uint8_t ff_table_inter_intra[4][2]
Definition: msmpeg4data.c:1874
int dc_table_index
Definition: mpegvideo.h:599
Predicted.
Definition: avutil.h:246
bitstream writer API