FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/msmpeg4enc.c
Date: 2021-09-26 18:22:30
Exec Total Coverage
Lines: 363 380 95.5%
Branches: 182 216 84.3%

Line Branch Exec Source
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 "libavutil/thread.h"
36 #include "mpegvideo.h"
37 #include "h263.h"
38 #include "internal.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
46 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
47
48 /* build the table which associate a (x,y) motion vector to a vlc */
49 34 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])
50 {
51 int i, x, y;
52
53 34 tab->table_mv_index = table_mv_index;
54
55 /* mark all entries as not used */
56
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139298 for(i=0;i<4096;i++)
57 139264 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;
58
59
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37400 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {
60 37366 x = tab->table_mvx[i];
61 37366 y = tab->table_mvy[i];
62 37366 tab->table_mv_index[(x << 6) | y] = i;
63 }
64 34 }
65
66 1048 void ff_msmpeg4_code012(PutBitContext *pb, int n)
67 {
68
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1048 if (n == 0) {
69 587 put_bits(pb, 1, 0);
70 } else {
71 461 put_bits(pb, 1, 1);
72 461 put_bits(pb, 1, (n >= 2));
73 }
74 1048 }
75
76 848640 static int get_size_of_code(const RLTable *rl, int last, int run,
77 int level, int intra)
78 {
79 848640 int size=0;
80 int code;
81 848640 int run_diff= intra ? 0 : 1;
82
83 848640 code = get_rl_index(rl, last, run, level);
84 848640 size+= rl->table_vlc[code][1];
85
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848640 if (code == rl->n) {
86 int level1, run1;
87
88 834411 level1 = level - rl->max_level[last][run];
89
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834411 if (level1 < 1)
90 goto esc2;
91 834411 code = get_rl_index(rl, last, run, level1);
92
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834411 if (code == rl->n) {
93 820182 esc2:
94 820182 size++;
95
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820182 if (level > MAX_LEVEL)
96 goto esc3;
97 820182 run1 = run - rl->max_run[last][level] - run_diff;
98
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820182 if (run1 < 0)
99 8092 goto esc3;
100 812090 code = get_rl_index(rl, last, run1, level);
101
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812090 if (code == rl->n) {
102 805188 esc3:
103 /* third escape */
104 813280 size+=1+1+6+8;
105 } else {
106 /* second escape */
107 6902 size+= 1+1+ rl->table_vlc[code][1];
108 }
109 } else {
110 /* first escape */
111 14229 size+= 1+1+ rl->table_vlc[code][1];
112 }
113 } else {
114 14229 size++;
115 }
116 848640 return size;
117 }
118
119 17 static av_cold void msmpeg4_encode_init_static(void)
120 {
121 static uint16_t mv_index_tables[2][4096];
122 17 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);
123 17 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);
124
125
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119 for (int i = 0; i < NB_RL_TABLES; i++) {
126
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6630 for (int level = 1; level <= MAX_LEVEL; level++) {
127
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430848 for (int run = 0; run <= MAX_RUN; run++) {
128
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1272960 for (int last = 0; last < 2; last++) {
129 848640 rl_length[i][level][run][last] = get_size_of_code(&ff_rl_table[i], last, run, level, 0);
130 }
131 }
132 }
133 }
134 17 }
135
136 17 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
137 {
138 static AVOnce init_static_once = AV_ONCE_INIT;
139
140 17 ff_msmpeg4_common_init(s);
141
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17 if (s->msmpeg4_version >= 4) {
142 8 s->min_qcoeff = -255;
143 8 s->max_qcoeff = 255;
144 }
145
146 /* init various encoding tables */
147 17 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);
148 17 }
149
150 625 static void find_best_tables(MpegEncContext * s)
151 {
152 int i;
153 625 int best = 0, best_size = INT_MAX;
154 625 int chroma_best = 0, best_chroma_size = INT_MAX;
155
156
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2500 for(i=0; i<3; i++){
157 int level;
158 1875 int chroma_size=0;
159 1875 int size=0;
160
161
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1875 if(i>0){// ;)
162 1250 size++;
163 1250 chroma_size++;
164 }
165
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123750 for(level=0; level<=MAX_LEVEL; level++){
166 int run;
167
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255678 for(run=0; run<=MAX_RUN; run++){
168 int last;
169 255678 const int last_size= size + chroma_size;
170
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767034 for(last=0; last<2; last++){
171 511356 int inter_count = s->ac_stats[0][0][level][run][last] + s->ac_stats[0][1][level][run][last];
172 511356 int intra_luma_count = s->ac_stats[1][0][level][run][last];
173 511356 int intra_chroma_count= s->ac_stats[1][1][level][run][last];
174
175
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511356 if(s->pict_type==AV_PICTURE_TYPE_I){
176 31794 size += intra_luma_count *rl_length[i ][level][run][last];
177 31794 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
178 }else{
179 479562 size+= intra_luma_count *rl_length[i ][level][run][last]
180 479562 +intra_chroma_count*rl_length[i+3][level][run][last]
181 479562 +inter_count *rl_length[i+3][level][run][last];
182 }
183 }
184
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255678 if(last_size == size+chroma_size) break;
185 }
186 }
187
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1875 if(size<best_size){
188 1435 best_size= size;
189 1435 best= i;
190 }
191
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1875 if(chroma_size<best_chroma_size){
192 667 best_chroma_size= chroma_size;
193 667 chroma_best= i;
194 }
195 }
196
197
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625 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
198
199 625 memset(s->ac_stats, 0, sizeof(int)*(MAX_LEVEL+1)*(MAX_RUN+1)*2*2*2);
200
201 625 s->rl_table_index = best;
202 625 s->rl_chroma_table_index= chroma_best;
203
204
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625 if(s->pict_type != s->last_non_b_pict_type){
205 125 s->rl_table_index= 2;
206
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125 if(s->pict_type==AV_PICTURE_TYPE_I)
207 63 s->rl_chroma_table_index= 1;
208 else
209 62 s->rl_chroma_table_index= 2;
210 }
211
212 625 }
213
214 /* write MSMPEG4 compatible frame header */
215 625 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
216 {
217 625 find_best_tables(s);
218
219 625 align_put_bits(&s->pb);
220 625 put_bits(&s->pb, 2, s->pict_type - 1);
221
222 625 put_bits(&s->pb, 5, s->qscale);
223
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625 if(s->msmpeg4_version<=2){
224 200 s->rl_table_index = 2;
225 200 s->rl_chroma_table_index = 2;
226 }
227
228 625 s->dc_table_index = 1;
229 625 s->mv_table_index = 1; /* only if P-frame */
230 625 s->use_skip_mb_code = 1; /* only if P-frame */
231 625 s->per_mb_rl_table = 0;
232
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625 if(s->msmpeg4_version==4)
233
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200 s->inter_intra_pred= (s->width*s->height < 320*240 && s->bit_rate<=II_BITRATE && s->pict_type==AV_PICTURE_TYPE_P);
234 ff_dlog(s, "%d %"PRId64" %d %d %d\n", s->pict_type, s->bit_rate,
235 s->inter_intra_pred, s->width, s->height);
236
237
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625 if (s->pict_type == AV_PICTURE_TYPE_I) {
238 63 s->slice_height= s->mb_height/1;
239 63 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
240
241
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63 if(s->msmpeg4_version==4){
242 20 ff_msmpeg4_encode_ext_header(s);
243
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20 if(s->bit_rate>MBAC_BITRATE)
244 20 put_bits(&s->pb, 1, s->per_mb_rl_table);
245 }
246
247
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63 if(s->msmpeg4_version>2){
248
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43 if(!s->per_mb_rl_table){
249 43 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
250 43 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
251 }
252
253 43 put_bits(&s->pb, 1, s->dc_table_index);
254 }
255 } else {
256 562 put_bits(&s->pb, 1, s->use_skip_mb_code);
257
258
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562 if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
259 180 put_bits(&s->pb, 1, s->per_mb_rl_table);
260
261
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562 if(s->msmpeg4_version>2){
262
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382 if(!s->per_mb_rl_table)
263 382 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
264
265 382 put_bits(&s->pb, 1, s->dc_table_index);
266
267 382 put_bits(&s->pb, 1, s->mv_table_index);
268 }
269 }
270
271 625 s->esc3_level_length= 0;
272 625 s->esc3_run_length= 0;
273 625 }
274
275 63 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)
276 {
277 63 unsigned fps = s->avctx->time_base.den / s->avctx->time_base.num / FFMAX(s->avctx->ticks_per_frame, 1);
278 63 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
279
280
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63 put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
281
282
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63 if(s->msmpeg4_version>=3)
283 43 put_bits(&s->pb, 1, s->flipflop_rounding);
284 else
285
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20 av_assert0(s->flipflop_rounding==0);
286 63 }
287
288 161363 void ff_msmpeg4_encode_motion(MpegEncContext * s,
289 int mx, int my)
290 {
291 int code;
292 MVTable *mv;
293
294 /* modulo encoding */
295 /* WARNING : you cannot reach all the MVs even with the modulo
296 encoding. This is a somewhat strange compromise they took !!! */
297
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161363 if (mx <= -64)
298 mx += 64;
299
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161363 else if (mx >= 64)
300 mx -= 64;
301
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161363 if (my <= -64)
302 my += 64;
303
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161363 else if (my >= 64)
304 my -= 64;
305
306 161363 mx += 32;
307 161363 my += 32;
308 161363 mv = &ff_mv_tables[s->mv_table_index];
309
310 161363 code = mv->table_mv_index[(mx << 6) | my];
311 161363 put_bits(&s->pb,
312 161363 mv->table_mv_bits[code],
313 161363 mv->table_mv_code[code]);
314
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161363 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
315 /* escape : code literally */
316 859 put_bits(&s->pb, 6, mx);
317 859 put_bits(&s->pb, 6, my);
318 }
319 161363 }
320
321 249300 void ff_msmpeg4_handle_slices(MpegEncContext *s){
322
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249300 if (s->mb_x == 0) {
323
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11850 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
324
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825 if(s->msmpeg4_version < 4){
325 425 ff_mpeg4_clean_buffers(s);
326 }
327 825 s->first_slice_line = 1;
328 } else {
329 11025 s->first_slice_line = 0;
330 }
331 }
332 249300 }
333
334 102006 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
335 {
336 int range, bit_size, sign, code, bits;
337
338
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102006 if (val == 0) {
339 /* zero vector */
340 52036 code = 0;
341 52036 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
342 } else {
343 49970 bit_size = s->f_code - 1;
344 49970 range = 1 << bit_size;
345
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49970 if (val <= -64)
346 val += 64;
347
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49970 else if (val >= 64)
348 val -= 64;
349
350
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49970 if (val >= 0) {
351 31351 sign = 0;
352 } else {
353 18619 val = -val;
354 18619 sign = 1;
355 }
356 49970 val--;
357 49970 code = (val >> bit_size) + 1;
358 49970 bits = val & (range - 1);
359
360 49970 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
361
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49970 if (bit_size > 0) {
362 put_bits(&s->pb, bit_size, bits);
363 }
364 }
365 102006 }
366
367 189450 void ff_msmpeg4_encode_mb(MpegEncContext * s,
368 int16_t block[6][64],
369 int motion_x, int motion_y)
370 {
371 int cbp, coded_cbp, i;
372 int pred_x, pred_y;
373 uint8_t *coded_block;
374
375 189450 ff_msmpeg4_handle_slices(s);
376
377
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189450 if (!s->mb_intra) {
378 /* compute cbp */
379 162914 cbp = 0;
380
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1140398 for (i = 0; i < 6; i++) {
381
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977484 if (s->block_last_index[i] >= 0)
382 354169 cbp |= 1 << (5 - i);
383 }
384
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162914 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
385 /* skip macroblock */
386 2259 put_bits(&s->pb, 1, 1);
387 2259 s->last_bits++;
388 2259 s->misc_bits++;
389 2259 s->skip_count++;
390
391 2259 return;
392 }
393
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160655 if (s->use_skip_mb_code)
394 160655 put_bits(&s->pb, 1, 0); /* mb coded */
395
396
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160655 if(s->msmpeg4_version<=2){
397 51003 put_bits(&s->pb,
398 51003 ff_v2_mb_type[cbp&3][1],
399 51003 ff_v2_mb_type[cbp&3][0]);
400
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51003 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
401 10410 else coded_cbp= cbp;
402
403 51003 put_bits(&s->pb,
404 51003 ff_h263_cbpy_tab[coded_cbp>>2][1],
405 51003 ff_h263_cbpy_tab[coded_cbp>>2][0]);
406
407 51003 s->misc_bits += get_bits_diff(s);
408
409 51003 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
410 51003 msmpeg4v2_encode_motion(s, motion_x - pred_x);
411 51003 msmpeg4v2_encode_motion(s, motion_y - pred_y);
412 }else{
413 109652 put_bits(&s->pb,
414 109652 ff_table_mb_non_intra[cbp + 64][1],
415 109652 ff_table_mb_non_intra[cbp + 64][0]);
416
417 109652 s->misc_bits += get_bits_diff(s);
418
419 /* motion vector */
420 109652 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
421 109652 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
422 motion_y - pred_y);
423 }
424
425 160655 s->mv_bits += get_bits_diff(s);
426
427
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1124585 for (i = 0; i < 6; i++) {
428 963930 ff_msmpeg4_encode_block(s, block[i], i);
429 }
430 160655 s->p_tex_bits += get_bits_diff(s);
431 } else {
432 /* compute cbp */
433 26536 cbp = 0;
434 26536 coded_cbp = 0;
435
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185752 for (i = 0; i < 6; i++) {
436 int val, pred;
437 159216 val = (s->block_last_index[i] >= 1);
438 159216 cbp |= val << (5 - i);
439
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159216 if (i < 4) {
440 /* predict value for close blocks only for luma */
441 106144 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
442 106144 *coded_block = val;
443 106144 val = val ^ pred;
444 }
445 159216 coded_cbp |= val << (5 - i);
446 }
447
448
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26536 if(s->msmpeg4_version<=2){
449
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8142 if (s->pict_type == AV_PICTURE_TYPE_I) {
450 5985 put_bits(&s->pb,
451 5985 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
452 } else {
453
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2157 if (s->use_skip_mb_code)
454 2157 put_bits(&s->pb, 1, 0); /* mb coded */
455 2157 put_bits(&s->pb,
456 2157 ff_v2_mb_type[(cbp&3) + 4][1],
457 2157 ff_v2_mb_type[(cbp&3) + 4][0]);
458 }
459 8142 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
460 8142 put_bits(&s->pb,
461 8142 ff_h263_cbpy_tab[cbp>>2][1],
462 8142 ff_h263_cbpy_tab[cbp>>2][0]);
463 }else{
464
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18394 if (s->pict_type == AV_PICTURE_TYPE_I) {
465 13158 put_bits(&s->pb,
466 13158 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
467 } else {
468
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5236 if (s->use_skip_mb_code)
469 5236 put_bits(&s->pb, 1, 0); /* mb coded */
470 5236 put_bits(&s->pb,
471 5236 ff_table_mb_non_intra[cbp][1],
472 5236 ff_table_mb_non_intra[cbp][0]);
473 }
474 18394 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
475
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18394 if(s->inter_intra_pred){
476 s->h263_aic_dir=0;
477 put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
478 }
479 }
480 26536 s->misc_bits += get_bits_diff(s);
481
482
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185752 for (i = 0; i < 6; i++) {
483 159216 ff_msmpeg4_encode_block(s, block[i], i);
484 }
485 26536 s->i_tex_bits += get_bits_diff(s);
486 26536 s->i_count++;
487 }
488 }
489
490 208050 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
491 {
492 int sign, code;
493 int pred;
494
495 int16_t *dc_val;
496 208050 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
497
498 /* update predictor */
499
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208050 if (n < 4) {
500 138700 *dc_val = level * s->y_dc_scale;
501 } else {
502 69350 *dc_val = level * s->c_dc_scale;
503 }
504
505 /* do the prediction */
506 208050 level -= pred;
507
508
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208050 if(s->msmpeg4_version<=2){
509
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48852 if (n < 4) {
510 32568 put_bits(&s->pb,
511 32568 ff_v2_dc_lum_table[level + 256][1],
512 32568 ff_v2_dc_lum_table[level + 256][0]);
513 }else{
514 16284 put_bits(&s->pb,
515 16284 ff_v2_dc_chroma_table[level + 256][1],
516 16284 ff_v2_dc_chroma_table[level + 256][0]);
517 }
518 }else{
519 159198 sign = 0;
520
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159198 if (level < 0) {
521 69483 level = -level;
522 69483 sign = 1;
523 }
524 159198 code = level;
525
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159198 if (code > DC_MAX)
526 46 code = DC_MAX;
527
528
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159198 if (s->dc_table_index == 0) {
529 if (n < 4) {
530 put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
531 } else {
532 put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
533 }
534 } else {
535
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159198 if (n < 4) {
536 106132 put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
537 } else {
538 53066 put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
539 }
540 }
541
542
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159198 if (code == DC_MAX)
543 46 put_bits(&s->pb, 8, level);
544
545
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159198 if (level != 0) {
546 144586 put_bits(&s->pb, 1, sign);
547 }
548 }
549 208050 }
550
551 /* Encoding of a block; very similar to MPEG-4 except for a different
552 * escape coding (same as H.263) and more VLC tables. */
553 1482246 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
554 {
555 int level, run, last, i, j, last_index;
556 int last_non_zero, sign, slevel;
557 int code, run_diff, dc_pred_dir;
558 const RLTable *rl;
559 const uint8_t *scantable;
560
561
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1482246 if (s->mb_intra) {
562 208050 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
563 208050 i = 1;
564
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208050 if (n < 4) {
565 138700 rl = &ff_rl_table[s->rl_table_index];
566 } else {
567 69350 rl = &ff_rl_table[3 + s->rl_chroma_table_index];
568 }
569 208050 run_diff = s->msmpeg4_version>=4;
570 208050 scantable= s->intra_scantable.permutated;
571 } else {
572 1274196 i = 0;
573 1274196 rl = &ff_rl_table[3 + s->rl_table_index];
574
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1274196 if(s->msmpeg4_version<=2)
575 306018 run_diff = 0;
576 else
577 968178 run_diff = 1;
578 1274196 scantable= s->inter_scantable.permutated;
579 }
580
581 /* recalculate block_last_index for M$ wmv1 */
582
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1482246 if (s->msmpeg4_version >= 4 && s->block_last_index[n] > 0) {
583
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9923648 for(last_index=63; last_index>=0; last_index--){
584
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9923648 if(block[scantable[last_index]]) break;
585 }
586 277524 s->block_last_index[n]= last_index;
587 }else
588 1204722 last_index = s->block_last_index[n];
589 /* AC coefs */
590 1482246 last_non_zero = i - 1;
591
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18914067 for (; i <= last_index; i++) {
592 17431821 j = scantable[i];
593 17431821 level = block[j];
594
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17431821 if (level) {
595 4396756 run = i - last_non_zero - 1;
596 4396756 last = (i == last_index);
597 4396756 sign = 0;
598 4396756 slevel = level;
599
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4396756 if (level < 0) {
600 2195832 sign = 1;
601 2195832 level = -level;
602 }
603
604
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4396756 if(level<=MAX_LEVEL && run<=MAX_RUN){
605 4396756 s->ac_stats[s->mb_intra][n>3][level][run][last]++;
606 }
607
608 4396756 s->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
609
610 4396756 code = get_rl_index(rl, last, run, level);
611 4396756 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
612
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4396756 if (code == rl->n) {
613 int level1, run1;
614
615 136660 level1 = level - rl->max_level[last][run];
616
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136660 if (level1 < 1)
617 goto esc2;
618 136660 code = get_rl_index(rl, last, run, level1);
619
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136660 if (code == rl->n) {
620 74016 esc2:
621 74016 put_bits(&s->pb, 1, 0);
622
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74016 if (level > MAX_LEVEL)
623 goto esc3;
624 74016 run1 = run - rl->max_run[last][level] - run_diff;
625
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74016 if (run1 < 0)
626 403 goto esc3;
627 73613 code = get_rl_index(rl, last, run1+1, level);
628
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73613 if (s->msmpeg4_version == 4 && code == rl->n)
629 5317 goto esc3;
630 68296 code = get_rl_index(rl, last, run1, level);
631
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68296 if (code == rl->n) {
632 13568 esc3:
633 /* third escape */
634 19288 put_bits(&s->pb, 1, 0);
635 19288 put_bits(&s->pb, 1, last);
636
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19288 if(s->msmpeg4_version>=4){
637
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6445 if(s->esc3_level_length==0){
638 280 s->esc3_level_length=8;
639 280 s->esc3_run_length= 6;
640 //ESCLVLSZ + ESCRUNSZ
641
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280 if(s->qscale<8)
642 put_bits(&s->pb, 6, 3);
643 else
644 280 put_bits(&s->pb, 8, 3);
645 }
646 6445 put_bits(&s->pb, s->esc3_run_length, run);
647 6445 put_bits(&s->pb, 1, sign);
648 6445 put_bits(&s->pb, s->esc3_level_length, level);
649 }else{
650 12843 put_bits(&s->pb, 6, run);
651 12843 put_sbits(&s->pb, 8, slevel);
652 }
653 } else {
654 /* second escape */
655 54728 put_bits(&s->pb, 1, 1);
656 54728 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
657 54728 put_bits(&s->pb, 1, sign);
658 }
659 } else {
660 /* first escape */
661 62644 put_bits(&s->pb, 1, 1);
662 62644 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
663 62644 put_bits(&s->pb, 1, sign);
664 }
665 } else {
666 4260096 put_bits(&s->pb, 1, sign);
667 }
668 4396756 last_non_zero = i;
669 }
670 }
671 1482246 }
672