FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/msmpeg4enc.c
Date: 2022-07-05 19:52:29
Exec Total Coverage
Lines: 366 383 95.6%
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 "codec_internal.h"
37 #include "mpegvideo.h"
38 #include "mpegvideoenc.h"
39 #include "h263.h"
40 #include "h263data.h"
41 #include "mpeg4video.h"
42 #include "msmpeg4.h"
43 #include "msmpeg4data.h"
44 #include "msmpeg4enc.h"
45 #include "put_bits.h"
46 #include "rl.h"
47
48 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
49
50 /* build the table which associate a (x,y) motion vector to a vlc */
51 34 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])
52 {
53 int i, x, y;
54
55 34 tab->table_mv_index = table_mv_index;
56
57 /* mark all entries as not used */
58
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139298 for(i=0;i<4096;i++)
59 139264 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;
60
61
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37400 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {
62 37366 x = tab->table_mvx[i];
63 37366 y = tab->table_mvy[i];
64 37366 tab->table_mv_index[(x << 6) | y] = i;
65 }
66 34 }
67
68 1048 void ff_msmpeg4_code012(PutBitContext *pb, int n)
69 {
70
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1048 if (n == 0) {
71 587 put_bits(pb, 1, 0);
72 } else {
73 461 put_bits(pb, 1, 1);
74 461 put_bits(pb, 1, (n >= 2));
75 }
76 1048 }
77
78 848640 static int get_size_of_code(const RLTable *rl, int last, int run,
79 int level, int intra)
80 {
81 848640 int size=0;
82 int code;
83 848640 int run_diff= intra ? 0 : 1;
84
85 848640 code = get_rl_index(rl, last, run, level);
86 848640 size+= rl->table_vlc[code][1];
87
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848640 if (code == rl->n) {
88 int level1, run1;
89
90 834411 level1 = level - rl->max_level[last][run];
91
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834411 if (level1 < 1)
92 goto esc2;
93 834411 code = get_rl_index(rl, last, run, level1);
94
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834411 if (code == rl->n) {
95 820182 esc2:
96 820182 size++;
97
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820182 if (level > MAX_LEVEL)
98 goto esc3;
99 820182 run1 = run - rl->max_run[last][level] - run_diff;
100
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820182 if (run1 < 0)
101 8092 goto esc3;
102 812090 code = get_rl_index(rl, last, run1, level);
103
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812090 if (code == rl->n) {
104 805188 esc3:
105 /* third escape */
106 813280 size+=1+1+6+8;
107 } else {
108 /* second escape */
109 6902 size+= 1+1+ rl->table_vlc[code][1];
110 }
111 } else {
112 /* first escape */
113 14229 size+= 1+1+ rl->table_vlc[code][1];
114 }
115 } else {
116 14229 size++;
117 }
118 848640 return size;
119 }
120
121 17 static av_cold void msmpeg4_encode_init_static(void)
122 {
123 static uint16_t mv_index_tables[2][4096];
124 17 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);
125 17 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);
126
127
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119 for (int i = 0; i < NB_RL_TABLES; i++) {
128
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6630 for (int level = 1; level <= MAX_LEVEL; level++) {
129
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430848 for (int run = 0; run <= MAX_RUN; run++) {
130
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1272960 for (int last = 0; last < 2; last++) {
131 848640 rl_length[i][level][run][last] = get_size_of_code(&ff_rl_table[i], last, run, level, 0);
132 }
133 }
134 }
135 }
136 17 }
137
138 17 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
139 {
140 static AVOnce init_static_once = AV_ONCE_INIT;
141
142 17 ff_msmpeg4_common_init(s);
143
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17 if (s->msmpeg4_version >= 4) {
144 8 s->min_qcoeff = -255;
145 8 s->max_qcoeff = 255;
146 }
147
148 /* init various encoding tables */
149 17 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);
150 17 }
151
152 625 static void find_best_tables(MSMPEG4EncContext *ms)
153 {
154 625 MpegEncContext *const s = &ms->s;
155 int i;
156 625 int best = 0, best_size = INT_MAX;
157 625 int chroma_best = 0, best_chroma_size = INT_MAX;
158
159
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2500 for(i=0; i<3; i++){
160 int level;
161 1875 int chroma_size=0;
162 1875 int size=0;
163
164
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1875 if(i>0){// ;)
165 1250 size++;
166 1250 chroma_size++;
167 }
168
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123750 for(level=0; level<=MAX_LEVEL; level++){
169 int run;
170
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255678 for(run=0; run<=MAX_RUN; run++){
171 int last;
172 255678 const int last_size= size + chroma_size;
173
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767034 for(last=0; last<2; last++){
174 511356 int inter_count = ms->ac_stats[0][0][level][run][last] + ms->ac_stats[0][1][level][run][last];
175 511356 int intra_luma_count = ms->ac_stats[1][0][level][run][last];
176 511356 int intra_chroma_count= ms->ac_stats[1][1][level][run][last];
177
178
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511356 if(s->pict_type==AV_PICTURE_TYPE_I){
179 31794 size += intra_luma_count *rl_length[i ][level][run][last];
180 31794 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
181 }else{
182 479562 size+= intra_luma_count *rl_length[i ][level][run][last]
183 479562 +intra_chroma_count*rl_length[i+3][level][run][last]
184 479562 +inter_count *rl_length[i+3][level][run][last];
185 }
186 }
187
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255678 if(last_size == size+chroma_size) break;
188 }
189 }
190
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1875 if(size<best_size){
191 1435 best_size= size;
192 1435 best= i;
193 }
194
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1875 if(chroma_size<best_chroma_size){
195 667 best_chroma_size= chroma_size;
196 667 chroma_best= i;
197 }
198 }
199
200
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625 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
201
202 625 memset(ms->ac_stats, 0, sizeof(ms->ac_stats));
203
204 625 s->rl_table_index = best;
205 625 s->rl_chroma_table_index= chroma_best;
206
207
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625 if(s->pict_type != s->last_non_b_pict_type){
208 125 s->rl_table_index= 2;
209
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125 if(s->pict_type==AV_PICTURE_TYPE_I)
210 63 s->rl_chroma_table_index= 1;
211 else
212 62 s->rl_chroma_table_index= 2;
213 }
214
215 625 }
216
217 /* write MSMPEG4 compatible frame header */
218 625 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
219 {
220 625 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;
221
222 625 find_best_tables(ms);
223
224 625 align_put_bits(&s->pb);
225 625 put_bits(&s->pb, 2, s->pict_type - 1);
226
227 625 put_bits(&s->pb, 5, s->qscale);
228
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625 if(s->msmpeg4_version<=2){
229 200 s->rl_table_index = 2;
230 200 s->rl_chroma_table_index = 2;
231 }
232
233 625 s->dc_table_index = 1;
234 625 s->mv_table_index = 1; /* only if P-frame */
235 625 s->use_skip_mb_code = 1; /* only if P-frame */
236 625 s->per_mb_rl_table = 0;
237
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625 if(s->msmpeg4_version==4)
238
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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);
239 ff_dlog(s, "%d %"PRId64" %d %d %d\n", s->pict_type, s->bit_rate,
240 s->inter_intra_pred, s->width, s->height);
241
242
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625 if (s->pict_type == AV_PICTURE_TYPE_I) {
243 63 s->slice_height= s->mb_height/1;
244 63 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
245
246
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63 if(s->msmpeg4_version==4){
247 20 ff_msmpeg4_encode_ext_header(s);
248
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20 if(s->bit_rate>MBAC_BITRATE)
249 20 put_bits(&s->pb, 1, s->per_mb_rl_table);
250 }
251
252
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63 if(s->msmpeg4_version>2){
253
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43 if(!s->per_mb_rl_table){
254 43 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
255 43 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
256 }
257
258 43 put_bits(&s->pb, 1, s->dc_table_index);
259 }
260 } else {
261 562 put_bits(&s->pb, 1, s->use_skip_mb_code);
262
263
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562 if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
264 180 put_bits(&s->pb, 1, s->per_mb_rl_table);
265
266
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562 if(s->msmpeg4_version>2){
267
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382 if(!s->per_mb_rl_table)
268 382 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
269
270 382 put_bits(&s->pb, 1, s->dc_table_index);
271
272 382 put_bits(&s->pb, 1, s->mv_table_index);
273 }
274 }
275
276 625 s->esc3_level_length= 0;
277 625 s->esc3_run_length= 0;
278 625 }
279
280 63 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)
281 {
282 63 unsigned fps = s->avctx->time_base.den / s->avctx->time_base.num / FFMAX(s->avctx->ticks_per_frame, 1);
283 63 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
284
285
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63 put_bits(&s->pb, 11, FFMIN(s->bit_rate/1024, 2047));
286
287
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63 if(s->msmpeg4_version>=3)
288 43 put_bits(&s->pb, 1, s->flipflop_rounding);
289 else
290
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20 av_assert0(s->flipflop_rounding==0);
291 63 }
292
293 161363 void ff_msmpeg4_encode_motion(MpegEncContext * s,
294 int mx, int my)
295 {
296 int code;
297 MVTable *mv;
298
299 /* modulo encoding */
300 /* WARNING : you cannot reach all the MVs even with the modulo
301 encoding. This is a somewhat strange compromise they took !!! */
302
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161363 if (mx <= -64)
303 mx += 64;
304
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161363 else if (mx >= 64)
305 mx -= 64;
306
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161363 if (my <= -64)
307 my += 64;
308
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161363 else if (my >= 64)
309 my -= 64;
310
311 161363 mx += 32;
312 161363 my += 32;
313 161363 mv = &ff_mv_tables[s->mv_table_index];
314
315 161363 code = mv->table_mv_index[(mx << 6) | my];
316 161363 put_bits(&s->pb,
317 161363 mv->table_mv_bits[code],
318 161363 mv->table_mv_code[code]);
319
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161363 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
320 /* escape : code literally */
321 859 put_bits(&s->pb, 6, mx);
322 859 put_bits(&s->pb, 6, my);
323 }
324 161363 }
325
326 249300 void ff_msmpeg4_handle_slices(MpegEncContext *s){
327
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249300 if (s->mb_x == 0) {
328
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11850 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
329
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825 if(s->msmpeg4_version < 4){
330 425 ff_mpeg4_clean_buffers(s);
331 }
332 825 s->first_slice_line = 1;
333 } else {
334 11025 s->first_slice_line = 0;
335 }
336 }
337 249300 }
338
339 102006 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
340 {
341 int range, bit_size, sign, code, bits;
342
343
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102006 if (val == 0) {
344 /* zero vector */
345 52036 code = 0;
346 52036 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
347 } else {
348 49970 bit_size = s->f_code - 1;
349 49970 range = 1 << bit_size;
350
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49970 if (val <= -64)
351 val += 64;
352
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49970 else if (val >= 64)
353 val -= 64;
354
355
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49970 if (val >= 0) {
356 31351 sign = 0;
357 } else {
358 18619 val = -val;
359 18619 sign = 1;
360 }
361 49970 val--;
362 49970 code = (val >> bit_size) + 1;
363 49970 bits = val & (range - 1);
364
365 49970 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
366
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49970 if (bit_size > 0) {
367 put_bits(&s->pb, bit_size, bits);
368 }
369 }
370 102006 }
371
372 189450 void ff_msmpeg4_encode_mb(MpegEncContext * s,
373 int16_t block[6][64],
374 int motion_x, int motion_y)
375 {
376 int cbp, coded_cbp, i;
377 int pred_x, pred_y;
378 uint8_t *coded_block;
379
380 189450 ff_msmpeg4_handle_slices(s);
381
382
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189450 if (!s->mb_intra) {
383 /* compute cbp */
384 162914 cbp = 0;
385
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1140398 for (i = 0; i < 6; i++) {
386
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977484 if (s->block_last_index[i] >= 0)
387 354169 cbp |= 1 << (5 - i);
388 }
389
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162914 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
390 /* skip macroblock */
391 2259 put_bits(&s->pb, 1, 1);
392 2259 s->last_bits++;
393 2259 s->misc_bits++;
394 2259 s->skip_count++;
395
396 2259 return;
397 }
398
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160655 if (s->use_skip_mb_code)
399 160655 put_bits(&s->pb, 1, 0); /* mb coded */
400
401
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160655 if(s->msmpeg4_version<=2){
402 51003 put_bits(&s->pb,
403 51003 ff_v2_mb_type[cbp&3][1],
404 51003 ff_v2_mb_type[cbp&3][0]);
405
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51003 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
406 10410 else coded_cbp= cbp;
407
408 51003 put_bits(&s->pb,
409 51003 ff_h263_cbpy_tab[coded_cbp>>2][1],
410 51003 ff_h263_cbpy_tab[coded_cbp>>2][0]);
411
412 51003 s->misc_bits += get_bits_diff(s);
413
414 51003 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
415 51003 msmpeg4v2_encode_motion(s, motion_x - pred_x);
416 51003 msmpeg4v2_encode_motion(s, motion_y - pred_y);
417 }else{
418 109652 put_bits(&s->pb,
419 109652 ff_table_mb_non_intra[cbp + 64][1],
420 109652 ff_table_mb_non_intra[cbp + 64][0]);
421
422 109652 s->misc_bits += get_bits_diff(s);
423
424 /* motion vector */
425 109652 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
426 109652 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
427 motion_y - pred_y);
428 }
429
430 160655 s->mv_bits += get_bits_diff(s);
431
432
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1124585 for (i = 0; i < 6; i++) {
433 963930 ff_msmpeg4_encode_block(s, block[i], i);
434 }
435 160655 s->p_tex_bits += get_bits_diff(s);
436 } else {
437 /* compute cbp */
438 26536 cbp = 0;
439 26536 coded_cbp = 0;
440
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185752 for (i = 0; i < 6; i++) {
441 int val, pred;
442 159216 val = (s->block_last_index[i] >= 1);
443 159216 cbp |= val << (5 - i);
444
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159216 if (i < 4) {
445 /* predict value for close blocks only for luma */
446 106144 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
447 106144 *coded_block = val;
448 106144 val = val ^ pred;
449 }
450 159216 coded_cbp |= val << (5 - i);
451 }
452
453
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26536 if(s->msmpeg4_version<=2){
454
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8142 if (s->pict_type == AV_PICTURE_TYPE_I) {
455 5985 put_bits(&s->pb,
456 5985 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
457 } else {
458
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2157 if (s->use_skip_mb_code)
459 2157 put_bits(&s->pb, 1, 0); /* mb coded */
460 2157 put_bits(&s->pb,
461 2157 ff_v2_mb_type[(cbp&3) + 4][1],
462 2157 ff_v2_mb_type[(cbp&3) + 4][0]);
463 }
464 8142 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
465 8142 put_bits(&s->pb,
466 8142 ff_h263_cbpy_tab[cbp>>2][1],
467 8142 ff_h263_cbpy_tab[cbp>>2][0]);
468 }else{
469
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18394 if (s->pict_type == AV_PICTURE_TYPE_I) {
470 13158 put_bits(&s->pb,
471 13158 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
472 } else {
473
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5236 if (s->use_skip_mb_code)
474 5236 put_bits(&s->pb, 1, 0); /* mb coded */
475 5236 put_bits(&s->pb,
476 5236 ff_table_mb_non_intra[cbp][1],
477 5236 ff_table_mb_non_intra[cbp][0]);
478 }
479 18394 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
480
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18394 if(s->inter_intra_pred){
481 s->h263_aic_dir=0;
482 put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
483 }
484 }
485 26536 s->misc_bits += get_bits_diff(s);
486
487
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185752 for (i = 0; i < 6; i++) {
488 159216 ff_msmpeg4_encode_block(s, block[i], i);
489 }
490 26536 s->i_tex_bits += get_bits_diff(s);
491 26536 s->i_count++;
492 }
493 }
494
495 208050 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
496 {
497 int sign, code;
498 int pred;
499
500 int16_t *dc_val;
501 208050 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
502
503 /* update predictor */
504
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208050 if (n < 4) {
505 138700 *dc_val = level * s->y_dc_scale;
506 } else {
507 69350 *dc_val = level * s->c_dc_scale;
508 }
509
510 /* do the prediction */
511 208050 level -= pred;
512
513
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208050 if(s->msmpeg4_version<=2){
514
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48852 if (n < 4) {
515 32568 put_bits(&s->pb,
516 32568 ff_v2_dc_lum_table[level + 256][1],
517 32568 ff_v2_dc_lum_table[level + 256][0]);
518 }else{
519 16284 put_bits(&s->pb,
520 16284 ff_v2_dc_chroma_table[level + 256][1],
521 16284 ff_v2_dc_chroma_table[level + 256][0]);
522 }
523 }else{
524 159198 sign = 0;
525
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159198 if (level < 0) {
526 69483 level = -level;
527 69483 sign = 1;
528 }
529 159198 code = level;
530
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159198 if (code > DC_MAX)
531 46 code = DC_MAX;
532
533
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159198 if (s->dc_table_index == 0) {
534 if (n < 4) {
535 put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
536 } else {
537 put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
538 }
539 } else {
540
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159198 if (n < 4) {
541 106132 put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
542 } else {
543 53066 put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
544 }
545 }
546
547
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159198 if (code == DC_MAX)
548 46 put_bits(&s->pb, 8, level);
549
550
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159198 if (level != 0) {
551 144586 put_bits(&s->pb, 1, sign);
552 }
553 }
554 208050 }
555
556 /* Encoding of a block; very similar to MPEG-4 except for a different
557 * escape coding (same as H.263) and more VLC tables. */
558 1482246 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
559 {
560 1482246 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;
561 int level, run, last, i, j, last_index;
562 int last_non_zero, sign, slevel;
563 int code, run_diff, dc_pred_dir;
564 const RLTable *rl;
565 const uint8_t *scantable;
566
567
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1482246 if (s->mb_intra) {
568 208050 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
569 208050 i = 1;
570
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208050 if (n < 4) {
571 138700 rl = &ff_rl_table[s->rl_table_index];
572 } else {
573 69350 rl = &ff_rl_table[3 + s->rl_chroma_table_index];
574 }
575 208050 run_diff = s->msmpeg4_version>=4;
576 208050 scantable= s->intra_scantable.permutated;
577 } else {
578 1274196 i = 0;
579 1274196 rl = &ff_rl_table[3 + s->rl_table_index];
580
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1274196 if(s->msmpeg4_version<=2)
581 306018 run_diff = 0;
582 else
583 968178 run_diff = 1;
584 1274196 scantable= s->inter_scantable.permutated;
585 }
586
587 /* recalculate block_last_index for M$ wmv1 */
588
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1482246 if (s->msmpeg4_version >= 4 && s->block_last_index[n] > 0) {
589
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9923648 for(last_index=63; last_index>=0; last_index--){
590
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9923648 if(block[scantable[last_index]]) break;
591 }
592 277524 s->block_last_index[n]= last_index;
593 }else
594 1204722 last_index = s->block_last_index[n];
595 /* AC coefs */
596 1482246 last_non_zero = i - 1;
597
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18914067 for (; i <= last_index; i++) {
598 17431821 j = scantable[i];
599 17431821 level = block[j];
600
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17431821 if (level) {
601 4396756 run = i - last_non_zero - 1;
602 4396756 last = (i == last_index);
603 4396756 sign = 0;
604 4396756 slevel = level;
605
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4396756 if (level < 0) {
606 2195832 sign = 1;
607 2195832 level = -level;
608 }
609
610
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4396756 if(level<=MAX_LEVEL && run<=MAX_RUN){
611 4396756 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;
612 }
613
614 4396756 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
615
616 4396756 code = get_rl_index(rl, last, run, level);
617 4396756 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
618
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4396756 if (code == rl->n) {
619 int level1, run1;
620
621 136660 level1 = level - rl->max_level[last][run];
622
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136660 if (level1 < 1)
623 goto esc2;
624 136660 code = get_rl_index(rl, last, run, level1);
625
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136660 if (code == rl->n) {
626 74016 esc2:
627 74016 put_bits(&s->pb, 1, 0);
628
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74016 if (level > MAX_LEVEL)
629 goto esc3;
630 74016 run1 = run - rl->max_run[last][level] - run_diff;
631
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74016 if (run1 < 0)
632 403 goto esc3;
633 73613 code = get_rl_index(rl, last, run1+1, level);
634
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73613 if (s->msmpeg4_version == 4 && code == rl->n)
635 5317 goto esc3;
636 68296 code = get_rl_index(rl, last, run1, level);
637
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68296 if (code == rl->n) {
638 13568 esc3:
639 /* third escape */
640 19288 put_bits(&s->pb, 1, 0);
641 19288 put_bits(&s->pb, 1, last);
642
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19288 if(s->msmpeg4_version>=4){
643
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6445 if(s->esc3_level_length==0){
644 280 s->esc3_level_length=8;
645 280 s->esc3_run_length= 6;
646 //ESCLVLSZ + ESCRUNSZ
647
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280 if(s->qscale<8)
648 put_bits(&s->pb, 6, 3);
649 else
650 280 put_bits(&s->pb, 8, 3);
651 }
652 6445 put_bits(&s->pb, s->esc3_run_length, run);
653 6445 put_bits(&s->pb, 1, sign);
654 6445 put_bits(&s->pb, s->esc3_level_length, level);
655 }else{
656 12843 put_bits(&s->pb, 6, run);
657 12843 put_sbits(&s->pb, 8, slevel);
658 }
659 } else {
660 /* second escape */
661 54728 put_bits(&s->pb, 1, 1);
662 54728 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
663 54728 put_bits(&s->pb, 1, sign);
664 }
665 } else {
666 /* first escape */
667 62644 put_bits(&s->pb, 1, 1);
668 62644 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
669 62644 put_bits(&s->pb, 1, sign);
670 }
671 } else {
672 4260096 put_bits(&s->pb, 1, sign);
673 }
674 4396756 last_non_zero = i;
675 }
676 }
677 1482246 }
678
679 const FFCodec ff_msmpeg4v2_encoder = {
680 .p.name = "msmpeg4v2",
681 .p.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"),
682 .p.type = AVMEDIA_TYPE_VIDEO,
683 .p.id = AV_CODEC_ID_MSMPEG4V2,
684 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
685 .p.priv_class = &ff_mpv_enc_class,
686 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
687 .priv_data_size = sizeof(MSMPEG4EncContext),
688 .init = ff_mpv_encode_init,
689 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
690 .close = ff_mpv_encode_end,
691 };
692
693 const FFCodec ff_msmpeg4v3_encoder = {
694 .p.name = "msmpeg4",
695 .p.long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"),
696 .p.type = AVMEDIA_TYPE_VIDEO,
697 .p.id = AV_CODEC_ID_MSMPEG4V3,
698 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
699 .p.priv_class = &ff_mpv_enc_class,
700 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
701 .priv_data_size = sizeof(MSMPEG4EncContext),
702 .init = ff_mpv_encode_init,
703 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
704 .close = ff_mpv_encode_end,
705 };
706
707 const FFCodec ff_wmv1_encoder = {
708 .p.name = "wmv1",
709 .p.long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 7"),
710 .p.type = AVMEDIA_TYPE_VIDEO,
711 .p.id = AV_CODEC_ID_WMV1,
712 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
713 .p.priv_class = &ff_mpv_enc_class,
714 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE | FF_CODEC_CAP_INIT_CLEANUP,
715 .priv_data_size = sizeof(MSMPEG4EncContext),
716 .init = ff_mpv_encode_init,
717 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
718 .close = ff_mpv_encode_end,
719 };
720