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 FFmpeg.
9 *
10 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 */
24
25 /**
26 * @file
27 * MSMPEG4 encoder backend
28 */
29
30 #include <stdint.h>
31 #include <string.h>
32
33 #include "libavutil/attributes.h"
34 #include "libavutil/avutil.h"
35 #include "mpegvideo.h"
36 #include "h263.h"
37 #include "internal.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
45 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
46
47 /* build the table which associate a (x,y) motion vector to a vlc */
init_mv_table(MVTable * tab,uint16_t table_mv_index[4096])48 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])
49 {
50 int i, x, y;
51
52 tab->table_mv_index = table_mv_index;
53
54 /* mark all entries as not used */
55 for(i=0;i<4096;i++)
56 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;
57
58 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; 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
ff_msmpeg4_code012(PutBitContext * pb,int n)65 void ff_msmpeg4_code012(PutBitContext *pb, int n)
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
get_size_of_code(MpegEncContext * s,RLTable * rl,int last,int run,int level,int intra)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
ff_msmpeg4_encode_init(MpegEncContext * s)116 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
117 {
118 static int init_done=0;
119 int i;
120
121 ff_msmpeg4_common_init(s);
122 if(s->msmpeg4_version>=4){
123 s->min_qcoeff= -255;
124 s->max_qcoeff= 255;
125 }
126
127 if (!init_done) {
128 static uint16_t mv_index_tables[2][4096];
129 /* init various encoding tables */
130 init_done = 1;
131 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);
132 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);
133
134 for(i=0;i<NB_RL_TABLES;i++)
135 ff_rl_init(&ff_rl_table[i], ff_static_rl_table_store[i]);
136
137 for(i=0; i<NB_RL_TABLES; i++){
138 int level;
139 for (level = 1; level <= MAX_LEVEL; level++) {
140 int run;
141 for(run=0; run<=MAX_RUN; run++){
142 int last;
143 for(last=0; last<2; last++){
144 rl_length[i][level][run][last]= get_size_of_code(s, &ff_rl_table[ i], last, run, level, 0);
145 }
146 }
147 }
148 }
149 }
150 }
151
find_best_tables(MpegEncContext * s)152 static void find_best_tables(MpegEncContext * s)
153 {
154 int i;
155 int best = 0, best_size = INT_MAX;
156 int chroma_best = 0, best_chroma_size = INT_MAX;
157
158 for(i=0; i<3; i++){
159 int level;
160 int chroma_size=0;
161 int size=0;
162
163 if(i>0){// ;)
164 size++;
165 chroma_size++;
166 }
167 for(level=0; level<=MAX_LEVEL; level++){
168 int run;
169 for(run=0; run<=MAX_RUN; run++){
170 int last;
171 const int last_size= size + chroma_size;
172 for(last=0; last<2; last++){
173 int inter_count = s->ac_stats[0][0][level][run][last] + s->ac_stats[0][1][level][run][last];
174 int intra_luma_count = s->ac_stats[1][0][level][run][last];
175 int intra_chroma_count= s->ac_stats[1][1][level][run][last];
176
177 if(s->pict_type==AV_PICTURE_TYPE_I){
178 size += intra_luma_count *rl_length[i ][level][run][last];
179 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
180 }else{
181 size+= intra_luma_count *rl_length[i ][level][run][last]
182 +intra_chroma_count*rl_length[i+3][level][run][last]
183 +inter_count *rl_length[i+3][level][run][last];
184 }
185 }
186 if(last_size == size+chroma_size) break;
187 }
188 }
189 if(size<best_size){
190 best_size= size;
191 best= i;
192 }
193 if(chroma_size<best_chroma_size){
194 best_chroma_size= chroma_size;
195 chroma_best= i;
196 }
197 }
198
199 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
200
201 memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2);
202
203 s->rl_table_index = best;
204 s->rl_chroma_table_index= chroma_best;
205
206 if(s->pict_type != s->last_non_b_pict_type){
207 s->rl_table_index= 2;
208 if(s->pict_type==AV_PICTURE_TYPE_I)
209 s->rl_chroma_table_index= 1;
210 else
211 s->rl_chroma_table_index= 2;
212 }
213
214 }
215
216 /* write MSMPEG4 compatible frame header */
ff_msmpeg4_encode_picture_header(MpegEncContext * s,int picture_number)217 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
218 {
219 find_best_tables(s);
220
221 align_put_bits(&s->pb);
222 put_bits(&s->pb, 2, s->pict_type - 1);
223
224 put_bits(&s->pb, 5, s->qscale);
225 if(s->msmpeg4_version<=2){
226 s->rl_table_index = 2;
227 s->rl_chroma_table_index = 2;
228 }
229
230 s->dc_table_index = 1;
231 s->mv_table_index = 1; /* only if P-frame */
232 s->use_skip_mb_code = 1; /* only if P-frame */
233 s->per_mb_rl_table = 0;
234 if(s->msmpeg4_version==4)
235 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P);
236 ff_dlog(s, "%d %"PRId64" %d %d %d\n", s->pict_type, s->bit_rate,
237 s->inter_intra_pred, s->width, s->height);
238
239 if (s->pict_type == AV_PICTURE_TYPE_I) {
240 s->slice_height= s->mb_height/1;
241 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
242
243 if(s->msmpeg4_version==4){
244 ff_msmpeg4_encode_ext_header(s);
245 if(s->bit_rate>MBAC_BITRATE)
246 put_bits(&s->pb, 1, s->per_mb_rl_table);
247 }
248
249 if(s->msmpeg4_version>2){
250 if(!s->per_mb_rl_table){
251 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
252 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
253 }
254
255 put_bits(&s->pb, 1, s->dc_table_index);
256 }
257 } else {
258 put_bits(&s->pb, 1, s->use_skip_mb_code);
259
260 if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
261 put_bits(&s->pb, 1, s->per_mb_rl_table);
262
263 if(s->msmpeg4_version>2){
264 if(!s->per_mb_rl_table)
265 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
266
267 put_bits(&s->pb, 1, s->dc_table_index);
268
269 put_bits(&s->pb, 1, s->mv_table_index);
270 }
271 }
272
273 s->esc3_level_length= 0;
274 s->esc3_run_length= 0;
275 }
276
ff_msmpeg4_encode_ext_header(MpegEncContext * s)277 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)
278 {
279 unsigned fps = s->avctx->time_base.den / s->avctx->time_base.num / FFMAX(s->avctx->ticks_per_frame, 1);
280 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
281
282 put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
283
284 if(s->msmpeg4_version>=3)
285 put_bits(&s->pb, 1, s->flipflop_rounding);
286 else
287 av_assert0(s->flipflop_rounding==0);
288 }
289
ff_msmpeg4_encode_motion(MpegEncContext * s,int mx,int my)290 void ff_msmpeg4_encode_motion(MpegEncContext * s,
291 int mx, int my)
292 {
293 int code;
294 MVTable *mv;
295
296 /* modulo encoding */
297 /* WARNING : you cannot reach all the MVs even with the modulo
298 encoding. This is a somewhat strange compromise they took !!! */
299 if (mx <= -64)
300 mx += 64;
301 else if (mx >= 64)
302 mx -= 64;
303 if (my <= -64)
304 my += 64;
305 else if (my >= 64)
306 my -= 64;
307
308 mx += 32;
309 my += 32;
310 mv = &ff_mv_tables[s->mv_table_index];
311
312 code = mv->table_mv_index[(mx << 6) | my];
313 put_bits(&s->pb,
314 mv->table_mv_bits[code],
315 mv->table_mv_code[code]);
316 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
317 /* escape : code literally */
318 put_bits(&s->pb, 6, mx);
319 put_bits(&s->pb, 6, my);
320 }
321 }
322
ff_msmpeg4_handle_slices(MpegEncContext * s)323 void ff_msmpeg4_handle_slices(MpegEncContext *s){
324 if (s->mb_x == 0) {
325 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
326 if(s->msmpeg4_version < 4){
327 ff_mpeg4_clean_buffers(s);
328 }
329 s->first_slice_line = 1;
330 } else {
331 s->first_slice_line = 0;
332 }
333 }
334 }
335
msmpeg4v2_encode_motion(MpegEncContext * s,int val)336 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
337 {
338 int range, bit_size, sign, code, bits;
339
340 if (val == 0) {
341 /* zero vector */
342 code = 0;
343 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
344 } else {
345 bit_size = s->f_code - 1;
346 range = 1 << bit_size;
347 if (val <= -64)
348 val += 64;
349 else if (val >= 64)
350 val -= 64;
351
352 if (val >= 0) {
353 sign = 0;
354 } else {
355 val = -val;
356 sign = 1;
357 }
358 val--;
359 code = (val >> bit_size) + 1;
360 bits = val & (range - 1);
361
362 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
363 if (bit_size > 0) {
364 put_bits(&s->pb, bit_size, bits);
365 }
366 }
367 }
368
ff_msmpeg4_encode_mb(MpegEncContext * s,int16_t block[6][64],int motion_x,int motion_y)369 void ff_msmpeg4_encode_mb(MpegEncContext * s,
370 int16_t block[6][64],
371 int motion_x, int motion_y)
372 {
373 int cbp, coded_cbp, i;
374 int pred_x, pred_y;
375 uint8_t *coded_block;
376
377 ff_msmpeg4_handle_slices(s);
378
379 if (!s->mb_intra) {
380 /* compute cbp */
381 cbp = 0;
382 for (i = 0; i < 6; i++) {
383 if (s->block_last_index[i] >= 0)
384 cbp |= 1 << (5 - i);
385 }
386 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
387 /* skip macroblock */
388 put_bits(&s->pb, 1, 1);
389 s->last_bits++;
390 s->misc_bits++;
391 s->skip_count++;
392
393 return;
394 }
395 if (s->use_skip_mb_code)
396 put_bits(&s->pb, 1, 0); /* mb coded */
397
398 if(s->msmpeg4_version<=2){
399 put_bits(&s->pb,
400 ff_v2_mb_type[cbp&3][1],
401 ff_v2_mb_type[cbp&3][0]);
402 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
403 else coded_cbp= cbp;
404
405 put_bits(&s->pb,
406 ff_h263_cbpy_tab[coded_cbp>>2][1],
407 ff_h263_cbpy_tab[coded_cbp>>2][0]);
408
409 s->misc_bits += get_bits_diff(s);
410
411 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
412 msmpeg4v2_encode_motion(s, motion_x - pred_x);
413 msmpeg4v2_encode_motion(s, motion_y - pred_y);
414 }else{
415 put_bits(&s->pb,
416 ff_table_mb_non_intra[cbp + 64][1],
417 ff_table_mb_non_intra[cbp + 64][0]);
418
419 s->misc_bits += get_bits_diff(s);
420
421 /* motion vector */
422 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
423 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
424 motion_y - pred_y);
425 }
426
427 s->mv_bits += get_bits_diff(s);
428
429 for (i = 0; i < 6; i++) {
430 ff_msmpeg4_encode_block(s, block[i], i);
431 }
432 s->p_tex_bits += get_bits_diff(s);
433 } else {
434 /* compute cbp */
435 cbp = 0;
436 coded_cbp = 0;
437 for (i = 0; i < 6; i++) {
438 int val, pred;
439 val = (s->block_last_index[i] >= 1);
440 cbp |= val << (5 - i);
441 if (i < 4) {
442 /* predict value for close blocks only for luma */
443 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
444 *coded_block = val;
445 val = val ^ pred;
446 }
447 coded_cbp |= val << (5 - i);
448 }
449
450 if(s->msmpeg4_version<=2){
451 if (s->pict_type == AV_PICTURE_TYPE_I) {
452 put_bits(&s->pb,
453 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
454 } else {
455 if (s->use_skip_mb_code)
456 put_bits(&s->pb, 1, 0); /* mb coded */
457 put_bits(&s->pb,
458 ff_v2_mb_type[(cbp&3) + 4][1],
459 ff_v2_mb_type[(cbp&3) + 4][0]);
460 }
461 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
462 put_bits(&s->pb,
463 ff_h263_cbpy_tab[cbp>>2][1],
464 ff_h263_cbpy_tab[cbp>>2][0]);
465 }else{
466 if (s->pict_type == AV_PICTURE_TYPE_I) {
467 put_bits(&s->pb,
468 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
469 } else {
470 if (s->use_skip_mb_code)
471 put_bits(&s->pb, 1, 0); /* mb coded */
472 put_bits(&s->pb,
473 ff_table_mb_non_intra[cbp][1],
474 ff_table_mb_non_intra[cbp][0]);
475 }
476 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
477 if(s->inter_intra_pred){
478 s->h263_aic_dir=0;
479 put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
480 }
481 }
482 s->misc_bits += get_bits_diff(s);
483
484 for (i = 0; i < 6; i++) {
485 ff_msmpeg4_encode_block(s, block[i], i);
486 }
487 s->i_tex_bits += get_bits_diff(s);
488 s->i_count++;
489 }
490 }
491
msmpeg4_encode_dc(MpegEncContext * s,int level,int n,int * dir_ptr)492 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
493 {
494 int sign, code;
495 int pred, av_uninit(extquant);
496 int extrabits = 0;
497
498 int16_t *dc_val;
499 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
500
501 /* update predictor */
502 if (n < 4) {
503 *dc_val = level * s->y_dc_scale;
504 } else {
505 *dc_val = level * s->c_dc_scale;
506 }
507
508 /* do the prediction */
509 level -= pred;
510
511 if(s->msmpeg4_version<=2){
512 if (n < 4) {
513 put_bits(&s->pb,
514 ff_v2_dc_lum_table[level + 256][1],
515 ff_v2_dc_lum_table[level + 256][0]);
516 }else{
517 put_bits(&s->pb,
518 ff_v2_dc_chroma_table[level + 256][1],
519 ff_v2_dc_chroma_table[level + 256][0]);
520 }
521 }else{
522 sign = 0;
523 if (level < 0) {
524 level = -level;
525 sign = 1;
526 }
527 code = level;
528 if (code > DC_MAX)
529 code = DC_MAX;
530 else if( s->msmpeg4_version>=6 ) {
531 if( s->qscale == 1 ) {
532 extquant = (level + 3) & 0x3;
533 code = ((level+3)>>2);
534 } else if( s->qscale == 2 ) {
535 extquant = (level + 1) & 0x1;
536 code = ((level+1)>>1);
537 }
538 }
539
540 if (s->dc_table_index == 0) {
541 if (n < 4) {
542 put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
543 } else {
544 put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
545 }
546 } else {
547 if (n < 4) {
548 put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
549 } else {
550 put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
551 }
552 }
553
554 if(s->msmpeg4_version>=6 && s->qscale<=2)
555 extrabits = 3 - s->qscale;
556
557 if (code == DC_MAX)
558 put_bits(&s->pb, 8 + extrabits, level);
559 else if(extrabits > 0)//== VC1 && s->qscale<=2
560 put_bits(&s->pb, extrabits, extquant);
561
562 if (level != 0) {
563 put_bits(&s->pb, 1, sign);
564 }
565 }
566 }
567
568 /* Encoding of a block; very similar to MPEG-4 except for a different
569 * escape coding (same as H.263) and more VLC tables. */
ff_msmpeg4_encode_block(MpegEncContext * s,int16_t * block,int n)570 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
571 {
572 int level, run, last, i, j, last_index;
573 int last_non_zero, sign, slevel;
574 int code, run_diff, dc_pred_dir;
575 const RLTable *rl;
576 const uint8_t *scantable;
577
578 if (s->mb_intra) {
579 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
580 i = 1;
581 if (n < 4) {
582 rl = &ff_rl_table[s->rl_table_index];
583 } else {
584 rl = &ff_rl_table[3 + s->rl_chroma_table_index];
585 }
586 run_diff = s->msmpeg4_version>=4;
587 scantable= s->intra_scantable.permutated;
588 } else {
589 i = 0;
590 rl = &ff_rl_table[3 + s->rl_table_index];
591 if(s->msmpeg4_version<=2)
592 run_diff = 0;
593 else
594 run_diff = 1;
595 scantable= s->inter_scantable.permutated;
596 }
597
598 /* recalculate block_last_index for M$ wmv1 */
599 if(s->msmpeg4_version>=4 && s->msmpeg4_version<6 && s->block_last_index[n]>0){
600 for(last_index=63; last_index>=0; last_index--){
601 if(block[scantable[last_index]]) break;
602 }
603 s->block_last_index[n]= last_index;
604 }else
605 last_index = s->block_last_index[n];
606 /* AC coefs */
607 last_non_zero = i - 1;
608 for (; i <= last_index; i++) {
609 j = scantable[i];
610 level = block[j];
611 if (level) {
612 run = i - last_non_zero - 1;
613 last = (i == last_index);
614 sign = 0;
615 slevel = level;
616 if (level < 0) {
617 sign = 1;
618 level = -level;
619 }
620
621 if(level<=MAX_LEVEL && run<=MAX_RUN){
622 s->ac_stats[s->mb_intra][n>3][level][run][last]++;
623 }
624
625 s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
626
627 code = get_rl_index(rl, last, run, level);
628 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
629 if (code == rl->n) {
630 int level1, run1;
631
632 level1 = level - rl->max_level[last][run];
633 if (level1 < 1)
634 goto esc2;
635 code = get_rl_index(rl, last, run, level1);
636 if (code == rl->n) {
637 esc2:
638 put_bits(&s->pb, 1, 0);
639 if (level > MAX_LEVEL)
640 goto esc3;
641 run1 = run - rl->max_run[last][level] - run_diff;
642 if (run1 < 0)
643 goto esc3;
644 code = get_rl_index(rl, last, run1+1, level);
645 if (s->msmpeg4_version == 4 && code == rl->n)
646 goto esc3;
647 code = get_rl_index(rl, last, run1, level);
648 if (code == rl->n) {
649 esc3:
650 /* third escape */
651 put_bits(&s->pb, 1, 0);
652 put_bits(&s->pb, 1, last);
653 if(s->msmpeg4_version>=4){
654 if(s->esc3_level_length==0){
655 s->esc3_level_length=8;
656 s->esc3_run_length= 6;
657 //ESCLVLSZ + ESCRUNSZ
658 if(s->qscale<8)
659 put_bits(&s->pb, 6 + (s->msmpeg4_version>=6), 3);
660 else
661 put_bits(&s->pb, 8, 3);
662 }
663 put_bits(&s->pb, s->esc3_run_length, run);
664 put_bits(&s->pb, 1, sign);
665 put_bits(&s->pb, s->esc3_level_length, level);
666 }else{
667 put_bits(&s->pb, 6, run);
668 put_sbits(&s->pb, 8, slevel);
669 }
670 } else {
671 /* second escape */
672 put_bits(&s->pb, 1, 1);
673 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
674 put_bits(&s->pb, 1, sign);
675 }
676 } else {
677 /* first escape */
678 put_bits(&s->pb, 1, 1);
679 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
680 put_bits(&s->pb, 1, sign);
681 }
682 } else {
683 put_bits(&s->pb, 1, sign);
684 }
685 last_non_zero = i;
686 }
687 }
688 }
689