Libav
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/attributes.h"
34 #include "libavutil/avutil.h"
35 #include "libavutil/mem.h"
36 #include "mpegvideo.h"
37 #include "msmpeg4.h"
38 #include "h263.h"
39 #include "mpeg4video.h"
40 #include "msmpeg4.h"
41 #include "msmpeg4data.h"
42 #include "put_bits.h"
43 #include "rl.h"
44 #include "vc1data.h"
45 
47 
48 /* build the table which associate a (x,y) motion vector to a vlc */
50 {
51  int i, x, y;
52 
53  tab->table_mv_index = av_malloc(sizeof(uint16_t) * 4096);
54  /* mark all entries as not used */
55  for(i=0;i<4096;i++)
56  tab->table_mv_index[i] = tab->n;
57 
58  for(i=0;i<tab->n;i++) {
59  x = tab->table_mvx[i];
60  y = tab->table_mvy[i];
61  tab->table_mv_index[(x << 6) | y] = i;
62  }
63 }
64 
66 {
67  if (n == 0) {
68  put_bits(pb, 1, 0);
69  } else {
70  put_bits(pb, 1, 1);
71  put_bits(pb, 1, (n >= 2));
72  }
73 }
74 
75 static int get_size_of_code(MpegEncContext * s, RLTable *rl, int last, int run, int level, int intra){
76  int size=0;
77  int code;
78  int run_diff= intra ? 0 : 1;
79 
80  code = get_rl_index(rl, last, run, level);
81  size+= rl->table_vlc[code][1];
82  if (code == rl->n) {
83  int level1, run1;
84 
85  level1 = level - rl->max_level[last][run];
86  if (level1 < 1)
87  goto esc2;
88  code = get_rl_index(rl, last, run, level1);
89  if (code == rl->n) {
90  esc2:
91  size++;
92  if (level > MAX_LEVEL)
93  goto esc3;
94  run1 = run - rl->max_run[last][level] - run_diff;
95  if (run1 < 0)
96  goto esc3;
97  code = get_rl_index(rl, last, run1, level);
98  if (code == rl->n) {
99  esc3:
100  /* third escape */
101  size+=1+1+6+8;
102  } else {
103  /* second escape */
104  size+= 1+1+ rl->table_vlc[code][1];
105  }
106  } else {
107  /* first escape */
108  size+= 1+1+ rl->table_vlc[code][1];
109  }
110  } else {
111  size++;
112  }
113  return size;
114 }
115 
117 {
118  static int init_done=0;
119  int i;
120 
122  if(s->msmpeg4_version>=4){
123  s->min_qcoeff= -255;
124  s->max_qcoeff= 255;
125  }
126 
127  if (!init_done) {
128  /* init various encoding tables */
129  init_done = 1;
132  for(i=0;i<NB_RL_TABLES;i++)
134 
135  for(i=0; i<NB_RL_TABLES; i++){
136  int level;
137  for (level = 1; level <= MAX_LEVEL; level++) {
138  int run;
139  for(run=0; run<=MAX_RUN; run++){
140  int last;
141  for(last=0; last<2; last++){
142  rl_length[i][level][run][last]= get_size_of_code(s, &ff_rl_table[ i], last, run, level, 0);
143  }
144  }
145  }
146  }
147  }
148 }
149 
151 {
152  int i;
153  int best =-1, best_size =9999999;
154  int chroma_best=-1, best_chroma_size=9999999;
155 
156  for(i=0; i<3; i++){
157  int level;
158  int chroma_size=0;
159  int size=0;
160 
161  if(i>0){// ;)
162  size++;
163  chroma_size++;
164  }
165  for(level=0; level<=MAX_LEVEL; level++){
166  int run;
167  for(run=0; run<=MAX_RUN; run++){
168  int last;
169  const int last_size= size + chroma_size;
170  for(last=0; last<2; last++){
171  int inter_count = s->ac_stats[0][0][level][run][last] + s->ac_stats[0][1][level][run][last];
172  int intra_luma_count = s->ac_stats[1][0][level][run][last];
173  int intra_chroma_count= s->ac_stats[1][1][level][run][last];
174 
176  size += intra_luma_count *rl_length[i ][level][run][last];
177  chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
178  }else{
179  size+= intra_luma_count *rl_length[i ][level][run][last]
180  +intra_chroma_count*rl_length[i+3][level][run][last]
181  +inter_count *rl_length[i+3][level][run][last];
182  }
183  }
184  if(last_size == size+chroma_size) break;
185  }
186  }
187  if(size<best_size){
188  best_size= size;
189  best= i;
190  }
191  if(chroma_size<best_chroma_size){
192  best_chroma_size= chroma_size;
193  chroma_best= i;
194  }
195  }
196 
197  if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
198 
199  memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2);
200 
201  s->rl_table_index = best;
202  s->rl_chroma_table_index= chroma_best;
203 
204  if(s->pict_type != s->last_non_b_pict_type){
205  s->rl_table_index= 2;
207  s->rl_chroma_table_index= 1;
208  else
209  s->rl_chroma_table_index= 2;
210  }
211 
212 }
213 
214 /* write MSMPEG4 compatible frame header */
216 {
217  find_best_tables(s);
218 
220  put_bits(&s->pb, 2, s->pict_type - 1);
221 
222  put_bits(&s->pb, 5, s->qscale);
223  if(s->msmpeg4_version<=2){
224  s->rl_table_index = 2;
225  s->rl_chroma_table_index = 2;
226  }
227 
228  s->dc_table_index = 1;
229  s->mv_table_index = 1; /* only if P frame */
230  s->use_skip_mb_code = 1; /* only if P frame */
231  s->per_mb_rl_table = 0;
232  if(s->msmpeg4_version==4)
233  s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P);
234  av_dlog(s, "%d %d %d %d %d\n", s->pict_type, s->bit_rate,
235  s->inter_intra_pred, s->width, s->height);
236 
237  if (s->pict_type == AV_PICTURE_TYPE_I) {
238  s->slice_height= s->mb_height/1;
239  put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
240 
241  if(s->msmpeg4_version==4){
243  if(s->bit_rate>MBAC_BITRATE)
244  put_bits(&s->pb, 1, s->per_mb_rl_table);
245  }
246 
247  if(s->msmpeg4_version>2){
248  if(!s->per_mb_rl_table){
251  }
252 
253  put_bits(&s->pb, 1, s->dc_table_index);
254  }
255  } else {
256  put_bits(&s->pb, 1, s->use_skip_mb_code);
257 
258  if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
259  put_bits(&s->pb, 1, s->per_mb_rl_table);
260 
261  if(s->msmpeg4_version>2){
262  if(!s->per_mb_rl_table)
264 
265  put_bits(&s->pb, 1, s->dc_table_index);
266 
267  put_bits(&s->pb, 1, s->mv_table_index);
268  }
269  }
270 
271  s->esc3_level_length= 0;
272  s->esc3_run_length= 0;
273 }
274 
276 {
277  put_bits(&s->pb, 5, s->avctx->time_base.den / s->avctx->time_base.num); //yes 29.97 -> 29
278 
279  put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
280 
281  if(s->msmpeg4_version>=3)
282  put_bits(&s->pb, 1, s->flipflop_rounding);
283  else
284  assert(s->flipflop_rounding==0);
285 }
286 
288  int mx, int my)
289 {
290  int code;
291  MVTable *mv;
292 
293  /* modulo encoding */
294  /* WARNING : you cannot reach all the MVs even with the modulo
295  encoding. This is a somewhat strange compromise they took !!! */
296  if (mx <= -64)
297  mx += 64;
298  else if (mx >= 64)
299  mx -= 64;
300  if (my <= -64)
301  my += 64;
302  else if (my >= 64)
303  my -= 64;
304 
305  mx += 32;
306  my += 32;
307 #if 0
308  if ((unsigned)mx >= 64 ||
309  (unsigned)my >= 64)
310  av_log(s->avctx, AV_LOG_ERROR, "error mx=%d my=%d\n", mx, my);
311 #endif
312  mv = &ff_mv_tables[s->mv_table_index];
313 
314  code = mv->table_mv_index[(mx << 6) | my];
315  put_bits(&s->pb,
316  mv->table_mv_bits[code],
317  mv->table_mv_code[code]);
318  if (code == mv->n) {
319  /* escape : code literally */
320  put_bits(&s->pb, 6, mx);
321  put_bits(&s->pb, 6, my);
322  }
323 }
324 
326  if (s->mb_x == 0) {
327  if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
328  if(s->msmpeg4_version < 4){
330  }
331  s->first_slice_line = 1;
332  } else {
333  s->first_slice_line = 0;
334  }
335  }
336 }
337 
338 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
339 {
340  int range, bit_size, sign, code, bits;
341 
342  if (val == 0) {
343  /* zero vector */
344  code = 0;
345  put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
346  } else {
347  bit_size = s->f_code - 1;
348  range = 1 << bit_size;
349  if (val <= -64)
350  val += 64;
351  else if (val >= 64)
352  val -= 64;
353 
354  if (val >= 0) {
355  sign = 0;
356  } else {
357  val = -val;
358  sign = 1;
359  }
360  val--;
361  code = (val >> bit_size) + 1;
362  bits = val & (range - 1);
363 
364  put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
365  if (bit_size > 0) {
366  put_bits(&s->pb, bit_size, bits);
367  }
368  }
369 }
370 
372  int16_t block[6][64],
373  int motion_x, int motion_y)
374 {
375  int cbp, coded_cbp, i;
376  int pred_x, pred_y;
377  uint8_t *coded_block;
378 
380 
381  if (!s->mb_intra) {
382  /* compute cbp */
383  cbp = 0;
384  for (i = 0; i < 6; i++) {
385  if (s->block_last_index[i] >= 0)
386  cbp |= 1 << (5 - i);
387  }
388  if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
389  /* skip macroblock */
390  put_bits(&s->pb, 1, 1);
391  s->last_bits++;
392  s->misc_bits++;
393  s->skip_count++;
394 
395  return;
396  }
397  if (s->use_skip_mb_code)
398  put_bits(&s->pb, 1, 0); /* mb coded */
399 
400  if(s->msmpeg4_version<=2){
401  put_bits(&s->pb,
402  ff_v2_mb_type[cbp&3][1],
403  ff_v2_mb_type[cbp&3][0]);
404  if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
405  else coded_cbp= cbp;
406 
407  put_bits(&s->pb,
408  ff_h263_cbpy_tab[coded_cbp>>2][1],
409  ff_h263_cbpy_tab[coded_cbp>>2][0]);
410 
411  s->misc_bits += get_bits_diff(s);
412 
413  ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
414  msmpeg4v2_encode_motion(s, motion_x - pred_x);
415  msmpeg4v2_encode_motion(s, motion_y - pred_y);
416  }else{
417  put_bits(&s->pb,
418  ff_table_mb_non_intra[cbp + 64][1],
419  ff_table_mb_non_intra[cbp + 64][0]);
420 
421  s->misc_bits += get_bits_diff(s);
422 
423  /* motion vector */
424  ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
425  ff_msmpeg4_encode_motion(s, motion_x - pred_x,
426  motion_y - pred_y);
427  }
428 
429  s->mv_bits += get_bits_diff(s);
430 
431  for (i = 0; i < 6; i++) {
432  ff_msmpeg4_encode_block(s, block[i], i);
433  }
434  s->p_tex_bits += get_bits_diff(s);
435  } else {
436  /* compute cbp */
437  cbp = 0;
438  coded_cbp = 0;
439  for (i = 0; i < 6; i++) {
440  int val, pred;
441  val = (s->block_last_index[i] >= 1);
442  cbp |= val << (5 - i);
443  if (i < 4) {
444  /* predict value for close blocks only for luma */
445  pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
446  *coded_block = val;
447  val = val ^ pred;
448  }
449  coded_cbp |= val << (5 - i);
450  }
451 
452  if(s->msmpeg4_version<=2){
453  if (s->pict_type == AV_PICTURE_TYPE_I) {
454  put_bits(&s->pb,
455  ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
456  } else {
457  if (s->use_skip_mb_code)
458  put_bits(&s->pb, 1, 0); /* mb coded */
459  put_bits(&s->pb,
460  ff_v2_mb_type[(cbp&3) + 4][1],
461  ff_v2_mb_type[(cbp&3) + 4][0]);
462  }
463  put_bits(&s->pb, 1, 0); /* no AC prediction yet */
464  put_bits(&s->pb,
465  ff_h263_cbpy_tab[cbp>>2][1],
466  ff_h263_cbpy_tab[cbp>>2][0]);
467  }else{
468  if (s->pict_type == AV_PICTURE_TYPE_I) {
469  put_bits(&s->pb,
470  ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
471  } else {
472  if (s->use_skip_mb_code)
473  put_bits(&s->pb, 1, 0); /* mb coded */
474  put_bits(&s->pb,
475  ff_table_mb_non_intra[cbp][1],
476  ff_table_mb_non_intra[cbp][0]);
477  }
478  put_bits(&s->pb, 1, 0); /* no AC prediction yet */
479  if(s->inter_intra_pred){
480  s->h263_aic_dir=0;
482  }
483  }
484  s->misc_bits += get_bits_diff(s);
485 
486  for (i = 0; i < 6; i++) {
487  ff_msmpeg4_encode_block(s, block[i], i);
488  }
489  s->i_tex_bits += get_bits_diff(s);
490  s->i_count++;
491  }
492 }
493 
494 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
495 {
496  int sign, code;
497  int pred, extquant;
498  int extrabits = 0;
499 
500  int16_t *dc_val;
501  pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
502 
503  /* update predictor */
504  if (n < 4) {
505  *dc_val = level * s->y_dc_scale;
506  } else {
507  *dc_val = level * s->c_dc_scale;
508  }
509 
510  /* do the prediction */
511  level -= pred;
512 
513  if(s->msmpeg4_version<=2){
514  if (n < 4) {
515  put_bits(&s->pb,
516  ff_v2_dc_lum_table[level + 256][1],
517  ff_v2_dc_lum_table[level + 256][0]);
518  }else{
519  put_bits(&s->pb,
520  ff_v2_dc_chroma_table[level + 256][1],
521  ff_v2_dc_chroma_table[level + 256][0]);
522  }
523  }else{
524  sign = 0;
525  if (level < 0) {
526  level = -level;
527  sign = 1;
528  }
529  code = level;
530  if (code > DC_MAX)
531  code = DC_MAX;
532  else if( s->msmpeg4_version>=6 ) {
533  if( s->qscale == 1 ) {
534  extquant = (level + 3) & 0x3;
535  code = ((level+3)>>2);
536  } else if( s->qscale == 2 ) {
537  extquant = (level + 1) & 0x1;
538  code = ((level+1)>>1);
539  }
540  }
541 
542  if (s->dc_table_index == 0) {
543  if (n < 4) {
544  put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
545  } else {
546  put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
547  }
548  } else {
549  if (n < 4) {
550  put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
551  } else {
552  put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
553  }
554  }
555 
556  if(s->msmpeg4_version>=6 && s->qscale<=2)
557  extrabits = 3 - s->qscale;
558 
559  if (code == DC_MAX)
560  put_bits(&s->pb, 8 + extrabits, level);
561  else if(extrabits > 0)//== VC1 && s->qscale<=2
562  put_bits(&s->pb, extrabits, extquant);
563 
564  if (level != 0) {
565  put_bits(&s->pb, 1, sign);
566  }
567  }
568 }
569 
570 /* Encoding of a block. Very similar to MPEG4 except for a different
571  escape coding (same as H263) and more vlc tables.
572  */
573 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
574 {
575  int level, run, last, i, j, last_index;
576  int last_non_zero, sign, slevel;
577  int code, run_diff, dc_pred_dir;
578  const RLTable *rl;
579  const uint8_t *scantable;
580 
581  if (s->mb_intra) {
582  msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
583  i = 1;
584  if (n < 4) {
585  rl = &ff_rl_table[s->rl_table_index];
586  } else {
587  rl = &ff_rl_table[3 + s->rl_chroma_table_index];
588  }
589  run_diff = s->msmpeg4_version>=4;
590  scantable= s->intra_scantable.permutated;
591  } else {
592  i = 0;
593  rl = &ff_rl_table[3 + s->rl_table_index];
594  if(s->msmpeg4_version<=2)
595  run_diff = 0;
596  else
597  run_diff = 1;
598  scantable= s->inter_scantable.permutated;
599  }
600 
601  /* recalculate block_last_index for M$ wmv1 */
602  if(s->msmpeg4_version>=4 && s->msmpeg4_version<6 && s->block_last_index[n]>0){
603  for(last_index=63; last_index>=0; last_index--){
604  if(block[scantable[last_index]]) break;
605  }
606  s->block_last_index[n]= last_index;
607  }else
608  last_index = s->block_last_index[n];
609  /* AC coefs */
610  last_non_zero = i - 1;
611  for (; i <= last_index; i++) {
612  j = scantable[i];
613  level = block[j];
614  if (level) {
615  run = i - last_non_zero - 1;
616  last = (i == last_index);
617  sign = 0;
618  slevel = level;
619  if (level < 0) {
620  sign = 1;
621  level = -level;
622  }
623 
624  if(level<=MAX_LEVEL && run<=MAX_RUN){
625  s->ac_stats[s->mb_intra][n>3][level][run][last]++;
626  }
627 
628  s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
629 
630  code = get_rl_index(rl, last, run, level);
631  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
632  if (code == rl->n) {
633  int level1, run1;
634 
635  level1 = level - rl->max_level[last][run];
636  if (level1 < 1)
637  goto esc2;
638  code = get_rl_index(rl, last, run, level1);
639  if (code == rl->n) {
640  esc2:
641  put_bits(&s->pb, 1, 0);
642  if (level > MAX_LEVEL)
643  goto esc3;
644  run1 = run - rl->max_run[last][level] - run_diff;
645  if (run1 < 0)
646  goto esc3;
647  code = get_rl_index(rl, last, run1+1, level);
648  if (s->msmpeg4_version == 4 && code == rl->n)
649  goto esc3;
650  code = get_rl_index(rl, last, run1, level);
651  if (code == rl->n) {
652  esc3:
653  /* third escape */
654  put_bits(&s->pb, 1, 0);
655  put_bits(&s->pb, 1, last);
656  if(s->msmpeg4_version>=4){
657  if(s->esc3_level_length==0){
658  s->esc3_level_length=8;
659  s->esc3_run_length= 6;
660  //ESCLVLSZ + ESCRUNSZ
661  if(s->qscale<8)
662  put_bits(&s->pb, 6 + (s->msmpeg4_version>=6), 3);
663  else
664  put_bits(&s->pb, 8, 3);
665  }
666  put_bits(&s->pb, s->esc3_run_length, run);
667  put_bits(&s->pb, 1, sign);
668  put_bits(&s->pb, s->esc3_level_length, level);
669  }else{
670  put_bits(&s->pb, 6, run);
671  put_sbits(&s->pb, 8, slevel);
672  }
673  } else {
674  /* second escape */
675  put_bits(&s->pb, 1, 1);
676  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
677  put_bits(&s->pb, 1, sign);
678  }
679  } else {
680  /* first escape */
681  put_bits(&s->pb, 1, 1);
682  put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
683  put_bits(&s->pb, 1, sign);
684  }
685  } else {
686  put_bits(&s->pb, 1, sign);
687  }
688  last_non_zero = i;
689  }
690  }
691 }
int inter_intra_pred
Definition: mpegvideo.h:554
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:62
int size
int esc3_level_length
Definition: mpegvideo.h:550
uint32_t ff_v2_dc_lum_table[512][2]
Definition: msmpeg4data.c:34
const uint32_t ff_table_mb_non_intra[128][2]
Definition: msmpeg4data.c:63
static void put_sbits(PutBitContext *pb, int n, int32_t value)
Definition: put_bits.h:172
const uint32_t ff_table0_dc_lum[120][2]
Definition: msmpeg4data.c:100
memory handling functions
uint32_t ff_v2_dc_chroma_table[512][2]
Definition: msmpeg4data.c:35
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:548
int num
numerator
Definition: rational.h:44
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:429
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)
#define NB_RL_TABLES
Definition: msmpeg4data.h:59
uint8_t permutated[64]
Definition: idctdsp.h:31
uint8_t run
Definition: svq3.c:146
static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]
Definition: msmpeg4enc.c:46
int qscale
QP.
Definition: mpegvideo.h:332
RLTable.
Definition: rl.h:38
av_cold void ff_msmpeg4_common_init(MpegEncContext *s)
Definition: msmpeg4.c:104
int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)
Definition: h263.c:313
Macro definitions for various function/variable attributes.
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
Definition: avcodec.h:1175
void ff_mpeg4_clean_buffers(MpegEncContext *s)
Definition: mpeg4video.c:45
void ff_msmpeg4_encode_picture_header(MpegEncContext *s, int picture_number)
Definition: msmpeg4enc.c:215
int esc3_run_length
Definition: mpegvideo.h:551
int8_t * max_run[2]
encoding & decoding
Definition: rl.h:46
VC-1 tables.
uint8_t bits
Definition: crc.c:251
const uint8_t ff_v2_intra_cbpc[4][2]
Definition: msmpeg4data.c:1807
uint8_t
#define av_cold
Definition: attributes.h:66
uint8_t ff_static_rl_table_store[NB_RL_TABLES][2][2 *MAX_RUN+MAX_LEVEL+3]
Definition: msmpeg4data.c:36
const uint8_t ff_mvtab[33][2]
Definition: h263data.h:91
int misc_bits
cbp, mb_type
Definition: mpegvideo.h:468
#define MBAC_BITRATE
Definition: msmpeg4.h:38
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:133
int mb_height
number of MBs horizontally & vertically
Definition: mpegvideo.h:255
int max_qcoeff
maximum encodable coefficient
Definition: mpegvideo.h:430
static void msmpeg4_encode_dc(MpegEncContext *s, int level, int n, int *dir_ptr)
Definition: msmpeg4enc.c:494
#define MAX_LEVEL
Definition: rl.h:35
int flipflop_rounding
Definition: mpegvideo.h:547
static void find_best_tables(MpegEncContext *s)
Definition: msmpeg4enc.c:150
static int get_bits_diff(MpegEncContext *s)
Definition: mpegvideo.h:770
int last_non_b_pict_type
used for mpeg4 gmc b-frames & ratecontrol
Definition: mpegvideo.h:341
const uint16_t ff_msmp4_mb_i_table[64][2]
Definition: msmpeg4data.c:43
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:123
void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)
Definition: msmpeg4enc.c:371
int rl_chroma_table_index
Definition: mpegvideo.h:542
int per_mb_rl_table
Definition: mpegvideo.h:549
void av_log(void *avcl, int level, const char *fmt,...)
Definition: log.c:169
static void put_bits(PutBitContext *s, int n, unsigned int value)
Write up to 31 bits into a bitstream.
Definition: put_bits.h:134
rl header.
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:1802
int ff_msmpeg4_pred_dc(MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)
Definition: msmpeg4.c:194
#define FFMIN(a, b)
Definition: common.h:57
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:553
int block_last_index[12]
last non zero coefficient in block
Definition: mpegvideo.h:209
const uint32_t ff_table1_dc_chroma[120][2]
Definition: msmpeg4data.c:201
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:75
int first_slice_line
used in mpeg4 too to handle resync markers
Definition: mpegvideo.h:546
void ff_msmpeg4_encode_block(MpegEncContext *s, int16_t *block, int n)
Definition: msmpeg4enc.c:573
ScanTable intra_scantable
Definition: mpegvideo.h:214
int height
picture size. must be a multiple of 16
Definition: mpegvideo.h:223
void ff_msmpeg4_encode_ext_header(MpegEncContext *s)
Definition: msmpeg4enc.c:275
const uint16_t * table_mv_code
Definition: msmpeg4data.h:40
#define DC_MAX
Definition: msmpeg4.h:40
const uint32_t ff_table1_dc_lum[120][2]
Definition: msmpeg4data.c:168
static void msmpeg4v2_encode_motion(MpegEncContext *s, int val)
Definition: msmpeg4enc.c:338
int slice_height
in macroblocks
Definition: mpegvideo.h:545
int use_skip_mb_code
Definition: mpegvideo.h:544
MVTable ff_mv_tables[2]
Definition: msmpeg4data.c:1785
int f_code
forward MV resolution
Definition: mpegvideo.h:362
void ff_msmpeg4_code012(PutBitContext *pb, int n)
Definition: msmpeg4enc.c:65
int pict_type
AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B, ...
Definition: mpegvideo.h:339
int bit_rate
wanted bit rate
Definition: mpegvideo.h:226
#define II_BITRATE
Definition: msmpeg4.h:37
RLTable ff_rl_table[NB_RL_TABLES]
Definition: msmpeg4data.c:601
static av_cold void init_mv_table(MVTable *tab)
Definition: msmpeg4enc.c:49
uint8_t level
Definition: svq3.c:147
MpegEncContext.
Definition: mpegvideo.h:204
#define MAX_RUN
Definition: rl.h:34
struct AVCodecContext * avctx
Definition: mpegvideo.h:221
PutBitContext pb
bit output
Definition: mpegvideo.h:277
void ff_msmpeg4_handle_slices(MpegEncContext *s)
Definition: msmpeg4enc.c:325
void ff_msmpeg4_encode_motion(MpegEncContext *s, int mx, int my)
Definition: msmpeg4enc.c:287
av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
Definition: msmpeg4enc.c:116
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:469
av_cold void ff_init_rl(RLTable *rl, uint8_t static_store[2][2 *MAX_RUN+MAX_LEVEL+3])
Definition: mpegvideo.c:1528
int rl_table_index
Definition: mpegvideo.h:541
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:213
int ff_msmpeg4_coded_block_pred(MpegEncContext *s, int n, uint8_t **coded_block_ptr)
Definition: msmpeg4.c:154
static int get_size_of_code(MpegEncContext *s, RLTable *rl, int last, int run, int level, int intra)
Definition: msmpeg4enc.c:75
int mv_table_index
Definition: mpegvideo.h:540
int h263_aic_dir
AIC direction: 0 = left, 1 = top.
Definition: mpegvideo.h:491
const uint8_t ff_table_inter_intra[4][2]
Definition: msmpeg4data.c:1868
int dc_table_index
Definition: mpegvideo.h:543
Predicted.
Definition: avutil.h:254
bitstream writer API
static int16_t block[64]
Definition: dct-test.c:88