FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavcodec/msmpeg4enc.c
Date: 2022-11-28 23:49:43
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 "msmpeg4_vc1_data.h"
45 #include "msmpeg4enc.h"
46 #include "put_bits.h"
47 #include "rl.h"
48
49 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];
50
51 /* build the table which associate a (x,y) motion vector to a vlc */
52 34 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])
53 {
54 int i, x, y;
55
56 34 tab->table_mv_index = table_mv_index;
57
58 /* mark all entries as not used */
59
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139298 for(i=0;i<4096;i++)
60 139264 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;
61
62
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37400 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {
63 37366 x = tab->table_mvx[i];
64 37366 y = tab->table_mvy[i];
65 37366 tab->table_mv_index[(x << 6) | y] = i;
66 }
67 34 }
68
69 1048 void ff_msmpeg4_code012(PutBitContext *pb, int n)
70 {
71
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1048 if (n == 0) {
72 587 put_bits(pb, 1, 0);
73 } else {
74 461 put_bits(pb, 1, 1);
75 461 put_bits(pb, 1, (n >= 2));
76 }
77 1048 }
78
79 848640 static int get_size_of_code(const RLTable *rl, int last, int run,
80 int level, int intra)
81 {
82 848640 int size=0;
83 int code;
84 848640 int run_diff= intra ? 0 : 1;
85
86 848640 code = get_rl_index(rl, last, run, level);
87 848640 size+= rl->table_vlc[code][1];
88
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848640 if (code == rl->n) {
89 int level1, run1;
90
91 834411 level1 = level - rl->max_level[last][run];
92
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834411 if (level1 < 1)
93 goto esc2;
94 834411 code = get_rl_index(rl, last, run, level1);
95
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834411 if (code == rl->n) {
96 820182 esc2:
97 820182 size++;
98
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820182 if (level > MAX_LEVEL)
99 goto esc3;
100 820182 run1 = run - rl->max_run[last][level] - run_diff;
101
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820182 if (run1 < 0)
102 8092 goto esc3;
103 812090 code = get_rl_index(rl, last, run1, level);
104
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812090 if (code == rl->n) {
105 805188 esc3:
106 /* third escape */
107 813280 size+=1+1+6+8;
108 } else {
109 /* second escape */
110 6902 size+= 1+1+ rl->table_vlc[code][1];
111 }
112 } else {
113 /* first escape */
114 14229 size+= 1+1+ rl->table_vlc[code][1];
115 }
116 } else {
117 14229 size++;
118 }
119 848640 return size;
120 }
121
122 17 static av_cold void msmpeg4_encode_init_static(void)
123 {
124 static uint16_t mv_index_tables[2][4096];
125 17 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);
126 17 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);
127
128
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119 for (int i = 0; i < NB_RL_TABLES; i++) {
129
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6630 for (int level = 1; level <= MAX_LEVEL; level++) {
130
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430848 for (int run = 0; run <= MAX_RUN; run++) {
131
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1272960 for (int last = 0; last < 2; last++) {
132 848640 rl_length[i][level][run][last] = get_size_of_code(&ff_rl_table[i], last, run, level, 0);
133 }
134 }
135 }
136 }
137 17 }
138
139 17 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)
140 {
141 static AVOnce init_static_once = AV_ONCE_INIT;
142
143 17 ff_msmpeg4_common_init(s);
144
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17 if (s->msmpeg4_version >= 4) {
145 8 s->min_qcoeff = -255;
146 8 s->max_qcoeff = 255;
147 }
148
149 /* init various encoding tables */
150 17 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);
151 17 }
152
153 625 static void find_best_tables(MSMPEG4EncContext *ms)
154 {
155 625 MpegEncContext *const s = &ms->s;
156 int i;
157 625 int best = 0, best_size = INT_MAX;
158 625 int chroma_best = 0, best_chroma_size = INT_MAX;
159
160
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2500 for(i=0; i<3; i++){
161 int level;
162 1875 int chroma_size=0;
163 1875 int size=0;
164
165
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1875 if(i>0){// ;)
166 1250 size++;
167 1250 chroma_size++;
168 }
169
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123750 for(level=0; level<=MAX_LEVEL; level++){
170 int run;
171
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255678 for(run=0; run<=MAX_RUN; run++){
172 int last;
173 255678 const int last_size= size + chroma_size;
174
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767034 for(last=0; last<2; last++){
175 511356 int inter_count = ms->ac_stats[0][0][level][run][last] + ms->ac_stats[0][1][level][run][last];
176 511356 int intra_luma_count = ms->ac_stats[1][0][level][run][last];
177 511356 int intra_chroma_count= ms->ac_stats[1][1][level][run][last];
178
179
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511356 if(s->pict_type==AV_PICTURE_TYPE_I){
180 31794 size += intra_luma_count *rl_length[i ][level][run][last];
181 31794 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];
182 }else{
183 479562 size+= intra_luma_count *rl_length[i ][level][run][last]
184 479562 +intra_chroma_count*rl_length[i+3][level][run][last]
185 479562 +inter_count *rl_length[i+3][level][run][last];
186 }
187 }
188
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255678 if(last_size == size+chroma_size) break;
189 }
190 }
191
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1875 if(size<best_size){
192 1435 best_size= size;
193 1435 best= i;
194 }
195
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1875 if(chroma_size<best_chroma_size){
196 667 best_chroma_size= chroma_size;
197 667 chroma_best= i;
198 }
199 }
200
201
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625 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;
202
203 625 memset(ms->ac_stats, 0, sizeof(ms->ac_stats));
204
205 625 s->rl_table_index = best;
206 625 s->rl_chroma_table_index= chroma_best;
207
208
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625 if(s->pict_type != s->last_non_b_pict_type){
209 125 s->rl_table_index= 2;
210
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125 if(s->pict_type==AV_PICTURE_TYPE_I)
211 63 s->rl_chroma_table_index= 1;
212 else
213 62 s->rl_chroma_table_index= 2;
214 }
215
216 625 }
217
218 /* write MSMPEG4 compatible frame header */
219 625 void ff_msmpeg4_encode_picture_header(MpegEncContext * s, int picture_number)
220 {
221 625 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;
222
223 625 find_best_tables(ms);
224
225 625 align_put_bits(&s->pb);
226 625 put_bits(&s->pb, 2, s->pict_type - 1);
227
228 625 put_bits(&s->pb, 5, s->qscale);
229
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625 if(s->msmpeg4_version<=2){
230 200 s->rl_table_index = 2;
231 200 s->rl_chroma_table_index = 2;
232 }
233
234 625 s->dc_table_index = 1;
235 625 s->mv_table_index = 1; /* only if P-frame */
236 625 s->use_skip_mb_code = 1; /* only if P-frame */
237 625 s->per_mb_rl_table = 0;
238
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625 if(s->msmpeg4_version==4)
239
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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);
240 ff_dlog(s, "%d %"PRId64" %d %d %d\n", s->pict_type, s->bit_rate,
241 s->inter_intra_pred, s->width, s->height);
242
243
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625 if (s->pict_type == AV_PICTURE_TYPE_I) {
244 63 s->slice_height= s->mb_height/1;
245 63 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);
246
247
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63 if(s->msmpeg4_version==4){
248 20 ff_msmpeg4_encode_ext_header(s);
249
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20 if(s->bit_rate>MBAC_BITRATE)
250 20 put_bits(&s->pb, 1, s->per_mb_rl_table);
251 }
252
253
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63 if(s->msmpeg4_version>2){
254
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43 if(!s->per_mb_rl_table){
255 43 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);
256 43 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
257 }
258
259 43 put_bits(&s->pb, 1, s->dc_table_index);
260 }
261 } else {
262 562 put_bits(&s->pb, 1, s->use_skip_mb_code);
263
264
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562 if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)
265 180 put_bits(&s->pb, 1, s->per_mb_rl_table);
266
267
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562 if(s->msmpeg4_version>2){
268
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382 if(!s->per_mb_rl_table)
269 382 ff_msmpeg4_code012(&s->pb, s->rl_table_index);
270
271 382 put_bits(&s->pb, 1, s->dc_table_index);
272
273 382 put_bits(&s->pb, 1, s->mv_table_index);
274 }
275 }
276
277 625 s->esc3_level_length= 0;
278 625 s->esc3_run_length= 0;
279 625 }
280
281 63 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)
282 {
283 63 unsigned fps = s->avctx->time_base.den / s->avctx->time_base.num / FFMAX(s->avctx->ticks_per_frame, 1);
284 63 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
285
286
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63 put_bits(&s->pb, 11, FFMIN(s->bit_rate / 1024, 2047));
287
288
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63 if (s->msmpeg4_version >= 3)
289 43 put_bits(&s->pb, 1, s->flipflop_rounding);
290 else
291
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20 av_assert0(!s->flipflop_rounding);
292 63 }
293
294 161363 void ff_msmpeg4_encode_motion(MpegEncContext * s,
295 int mx, int my)
296 {
297 int code;
298 MVTable *mv;
299
300 /* modulo encoding */
301 /* WARNING : you cannot reach all the MVs even with the modulo
302 encoding. This is a somewhat strange compromise they took !!! */
303
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161363 if (mx <= -64)
304 mx += 64;
305
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161363 else if (mx >= 64)
306 mx -= 64;
307
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161363 if (my <= -64)
308 my += 64;
309
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161363 else if (my >= 64)
310 my -= 64;
311
312 161363 mx += 32;
313 161363 my += 32;
314 161363 mv = &ff_mv_tables[s->mv_table_index];
315
316 161363 code = mv->table_mv_index[(mx << 6) | my];
317 161363 put_bits(&s->pb,
318 161363 mv->table_mv_bits[code],
319 161363 mv->table_mv_code[code]);
320
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161363 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
321 /* escape : code literally */
322 859 put_bits(&s->pb, 6, mx);
323 859 put_bits(&s->pb, 6, my);
324 }
325 161363 }
326
327 249300 void ff_msmpeg4_handle_slices(MpegEncContext *s){
328
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249300 if (s->mb_x == 0) {
329
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11850 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
330
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825 if(s->msmpeg4_version < 4){
331 425 ff_mpeg4_clean_buffers(s);
332 }
333 825 s->first_slice_line = 1;
334 } else {
335 11025 s->first_slice_line = 0;
336 }
337 }
338 249300 }
339
340 102006 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
341 {
342 int range, bit_size, sign, code, bits;
343
344
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102006 if (val == 0) {
345 /* zero vector */
346 52036 code = 0;
347 52036 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
348 } else {
349 49970 bit_size = s->f_code - 1;
350 49970 range = 1 << bit_size;
351
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49970 if (val <= -64)
352 val += 64;
353
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49970 else if (val >= 64)
354 val -= 64;
355
356
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49970 if (val >= 0) {
357 31351 sign = 0;
358 } else {
359 18619 val = -val;
360 18619 sign = 1;
361 }
362 49970 val--;
363 49970 code = (val >> bit_size) + 1;
364 49970 bits = val & (range - 1);
365
366 49970 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
367
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49970 if (bit_size > 0) {
368 put_bits(&s->pb, bit_size, bits);
369 }
370 }
371 102006 }
372
373 189450 void ff_msmpeg4_encode_mb(MpegEncContext * s,
374 int16_t block[6][64],
375 int motion_x, int motion_y)
376 {
377 int cbp, coded_cbp, i;
378 int pred_x, pred_y;
379 uint8_t *coded_block;
380
381 189450 ff_msmpeg4_handle_slices(s);
382
383
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189450 if (!s->mb_intra) {
384 /* compute cbp */
385 162914 cbp = 0;
386
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1140398 for (i = 0; i < 6; i++) {
387
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977484 if (s->block_last_index[i] >= 0)
388 354169 cbp |= 1 << (5 - i);
389 }
390
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162914 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
391 /* skip macroblock */
392 2259 put_bits(&s->pb, 1, 1);
393 2259 s->last_bits++;
394 2259 s->misc_bits++;
395 2259 s->skip_count++;
396
397 2259 return;
398 }
399
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160655 if (s->use_skip_mb_code)
400 160655 put_bits(&s->pb, 1, 0); /* mb coded */
401
402
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160655 if(s->msmpeg4_version<=2){
403 51003 put_bits(&s->pb,
404 51003 ff_v2_mb_type[cbp&3][1],
405 51003 ff_v2_mb_type[cbp&3][0]);
406
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51003 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
407 10410 else coded_cbp= cbp;
408
409 51003 put_bits(&s->pb,
410 51003 ff_h263_cbpy_tab[coded_cbp>>2][1],
411 51003 ff_h263_cbpy_tab[coded_cbp>>2][0]);
412
413 51003 s->misc_bits += get_bits_diff(s);
414
415 51003 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
416 51003 msmpeg4v2_encode_motion(s, motion_x - pred_x);
417 51003 msmpeg4v2_encode_motion(s, motion_y - pred_y);
418 }else{
419 109652 put_bits(&s->pb,
420 109652 ff_table_mb_non_intra[cbp + 64][1],
421 109652 ff_table_mb_non_intra[cbp + 64][0]);
422
423 109652 s->misc_bits += get_bits_diff(s);
424
425 /* motion vector */
426 109652 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
427 109652 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
428 motion_y - pred_y);
429 }
430
431 160655 s->mv_bits += get_bits_diff(s);
432
433
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1124585 for (i = 0; i < 6; i++) {
434 963930 ff_msmpeg4_encode_block(s, block[i], i);
435 }
436 160655 s->p_tex_bits += get_bits_diff(s);
437 } else {
438 /* compute cbp */
439 26536 cbp = 0;
440 26536 coded_cbp = 0;
441
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185752 for (i = 0; i < 6; i++) {
442 int val, pred;
443 159216 val = (s->block_last_index[i] >= 1);
444 159216 cbp |= val << (5 - i);
445
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159216 if (i < 4) {
446 /* predict value for close blocks only for luma */
447 106144 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
448 106144 *coded_block = val;
449 106144 val = val ^ pred;
450 }
451 159216 coded_cbp |= val << (5 - i);
452 }
453
454
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26536 if(s->msmpeg4_version<=2){
455
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8142 if (s->pict_type == AV_PICTURE_TYPE_I) {
456 5985 put_bits(&s->pb,
457 5985 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
458 } else {
459
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2157 if (s->use_skip_mb_code)
460 2157 put_bits(&s->pb, 1, 0); /* mb coded */
461 2157 put_bits(&s->pb,
462 2157 ff_v2_mb_type[(cbp&3) + 4][1],
463 2157 ff_v2_mb_type[(cbp&3) + 4][0]);
464 }
465 8142 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
466 8142 put_bits(&s->pb,
467 8142 ff_h263_cbpy_tab[cbp>>2][1],
468 8142 ff_h263_cbpy_tab[cbp>>2][0]);
469 }else{
470
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18394 if (s->pict_type == AV_PICTURE_TYPE_I) {
471 13158 put_bits(&s->pb,
472 13158 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
473 } else {
474
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5236 if (s->use_skip_mb_code)
475 5236 put_bits(&s->pb, 1, 0); /* mb coded */
476 5236 put_bits(&s->pb,
477 5236 ff_table_mb_non_intra[cbp][1],
478 5236 ff_table_mb_non_intra[cbp][0]);
479 }
480 18394 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
481
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18394 if(s->inter_intra_pred){
482 s->h263_aic_dir=0;
483 put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
484 }
485 }
486 26536 s->misc_bits += get_bits_diff(s);
487
488
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185752 for (i = 0; i < 6; i++) {
489 159216 ff_msmpeg4_encode_block(s, block[i], i);
490 }
491 26536 s->i_tex_bits += get_bits_diff(s);
492 26536 s->i_count++;
493 }
494 }
495
496 208050 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
497 {
498 int sign, code;
499 int pred;
500
501 int16_t *dc_val;
502 208050 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
503
504 /* update predictor */
505
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208050 if (n < 4) {
506 138700 *dc_val = level * s->y_dc_scale;
507 } else {
508 69350 *dc_val = level * s->c_dc_scale;
509 }
510
511 /* do the prediction */
512 208050 level -= pred;
513
514
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208050 if(s->msmpeg4_version<=2){
515
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48852 if (n < 4) {
516 32568 put_bits(&s->pb,
517 32568 ff_v2_dc_lum_table[level + 256][1],
518 32568 ff_v2_dc_lum_table[level + 256][0]);
519 }else{
520 16284 put_bits(&s->pb,
521 16284 ff_v2_dc_chroma_table[level + 256][1],
522 16284 ff_v2_dc_chroma_table[level + 256][0]);
523 }
524 }else{
525 159198 sign = 0;
526
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159198 if (level < 0) {
527 69483 level = -level;
528 69483 sign = 1;
529 }
530 159198 code = level;
531
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159198 if (code > DC_MAX)
532 46 code = DC_MAX;
533
534
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159198 if (s->dc_table_index == 0) {
535 if (n < 4) {
536 put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
537 } else {
538 put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
539 }
540 } else {
541
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159198 if (n < 4) {
542 106132 put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
543 } else {
544 53066 put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
545 }
546 }
547
548
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159198 if (code == DC_MAX)
549 46 put_bits(&s->pb, 8, level);
550
551
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159198 if (level != 0) {
552 144586 put_bits(&s->pb, 1, sign);
553 }
554 }
555 208050 }
556
557 /* Encoding of a block; very similar to MPEG-4 except for a different
558 * escape coding (same as H.263) and more VLC tables. */
559 1482246 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
560 {
561 1482246 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;
562 int level, run, last, i, j, last_index;
563 int last_non_zero, sign, slevel;
564 int code, run_diff, dc_pred_dir;
565 const RLTable *rl;
566 const uint8_t *scantable;
567
568
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1482246 if (s->mb_intra) {
569 208050 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
570 208050 i = 1;
571
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208050 if (n < 4) {
572 138700 rl = &ff_rl_table[s->rl_table_index];
573 } else {
574 69350 rl = &ff_rl_table[3 + s->rl_chroma_table_index];
575 }
576 208050 run_diff = s->msmpeg4_version>=4;
577 208050 scantable= s->intra_scantable.permutated;
578 } else {
579 1274196 i = 0;
580 1274196 rl = &ff_rl_table[3 + s->rl_table_index];
581
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1274196 if(s->msmpeg4_version<=2)
582 306018 run_diff = 0;
583 else
584 968178 run_diff = 1;
585 1274196 scantable= s->inter_scantable.permutated;
586 }
587
588 /* recalculate block_last_index for M$ wmv1 */
589
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1482246 if (s->msmpeg4_version >= 4 && s->block_last_index[n] > 0) {
590
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9923648 for(last_index=63; last_index>=0; last_index--){
591
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9923648 if(block[scantable[last_index]]) break;
592 }
593 277524 s->block_last_index[n]= last_index;
594 }else
595 1204722 last_index = s->block_last_index[n];
596 /* AC coefs */
597 1482246 last_non_zero = i - 1;
598
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18914067 for (; i <= last_index; i++) {
599 17431821 j = scantable[i];
600 17431821 level = block[j];
601
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17431821 if (level) {
602 4396756 run = i - last_non_zero - 1;
603 4396756 last = (i == last_index);
604 4396756 sign = 0;
605 4396756 slevel = level;
606
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4396756 if (level < 0) {
607 2195832 sign = 1;
608 2195832 level = -level;
609 }
610
611
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4396756 if(level<=MAX_LEVEL && run<=MAX_RUN){
612 4396756 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;
613 }
614
615 4396756 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
616
617 4396756 code = get_rl_index(rl, last, run, level);
618 4396756 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
619
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4396756 if (code == rl->n) {
620 int level1, run1;
621
622 136660 level1 = level - rl->max_level[last][run];
623
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136660 if (level1 < 1)
624 goto esc2;
625 136660 code = get_rl_index(rl, last, run, level1);
626
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136660 if (code == rl->n) {
627 74016 esc2:
628 74016 put_bits(&s->pb, 1, 0);
629
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74016 if (level > MAX_LEVEL)
630 goto esc3;
631 74016 run1 = run - rl->max_run[last][level] - run_diff;
632
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74016 if (run1 < 0)
633 403 goto esc3;
634 73613 code = get_rl_index(rl, last, run1+1, level);
635
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73613 if (s->msmpeg4_version == 4 && code == rl->n)
636 5317 goto esc3;
637 68296 code = get_rl_index(rl, last, run1, level);
638
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68296 if (code == rl->n) {
639 13568 esc3:
640 /* third escape */
641 19288 put_bits(&s->pb, 1, 0);
642 19288 put_bits(&s->pb, 1, last);
643
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19288 if(s->msmpeg4_version>=4){
644
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6445 if(s->esc3_level_length==0){
645 280 s->esc3_level_length=8;
646 280 s->esc3_run_length= 6;
647 //ESCLVLSZ + ESCRUNSZ
648
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280 if(s->qscale<8)
649 put_bits(&s->pb, 6, 3);
650 else
651 280 put_bits(&s->pb, 8, 3);
652 }
653 6445 put_bits(&s->pb, s->esc3_run_length, run);
654 6445 put_bits(&s->pb, 1, sign);
655 6445 put_bits(&s->pb, s->esc3_level_length, level);
656 }else{
657 12843 put_bits(&s->pb, 6, run);
658 12843 put_sbits(&s->pb, 8, slevel);
659 }
660 } else {
661 /* second escape */
662 54728 put_bits(&s->pb, 1, 1);
663 54728 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
664 54728 put_bits(&s->pb, 1, sign);
665 }
666 } else {
667 /* first escape */
668 62644 put_bits(&s->pb, 1, 1);
669 62644 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
670 62644 put_bits(&s->pb, 1, sign);
671 }
672 } else {
673 4260096 put_bits(&s->pb, 1, sign);
674 }
675 4396756 last_non_zero = i;
676 }
677 }
678 1482246 }
679
680 const FFCodec ff_msmpeg4v2_encoder = {
681 .p.name = "msmpeg4v2",
682 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 2"),
683 .p.type = AVMEDIA_TYPE_VIDEO,
684 .p.id = AV_CODEC_ID_MSMPEG4V2,
685 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
686 .p.priv_class = &ff_mpv_enc_class,
687 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
688 .priv_data_size = sizeof(MSMPEG4EncContext),
689 .init = ff_mpv_encode_init,
690 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
691 .close = ff_mpv_encode_end,
692 };
693
694 const FFCodec ff_msmpeg4v3_encoder = {
695 .p.name = "msmpeg4",
696 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 3"),
697 .p.type = AVMEDIA_TYPE_VIDEO,
698 .p.id = AV_CODEC_ID_MSMPEG4V3,
699 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
700 .p.priv_class = &ff_mpv_enc_class,
701 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
702 .priv_data_size = sizeof(MSMPEG4EncContext),
703 .init = ff_mpv_encode_init,
704 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
705 .close = ff_mpv_encode_end,
706 };
707
708 const FFCodec ff_wmv1_encoder = {
709 .p.name = "wmv1",
710 CODEC_LONG_NAME("Windows Media Video 7"),
711 .p.type = AVMEDIA_TYPE_VIDEO,
712 .p.id = AV_CODEC_ID_WMV1,
713 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
714 .p.priv_class = &ff_mpv_enc_class,
715 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
716 .priv_data_size = sizeof(MSMPEG4EncContext),
717 .init = ff_mpv_encode_init,
718 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
719 .close = ff_mpv_encode_end,
720 };
721