FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/msmpeg4enc.c
Date: 2023-10-02 11:06:47
Exec Total Coverage
Lines: 367 386 95.1%
Functions: 14 14 100.0%
Branches: 184 220 83.6%
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)
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 unsigned fps;
284
285
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 63 if (s->avctx->framerate.num > 0 && s->avctx->framerate.den > 0)
286 63 fps = s->avctx->framerate.num / s->avctx->framerate.den;
287 else {
288 FF_DISABLE_DEPRECATION_WARNINGS
289 ✗ fps = s->avctx->time_base.den / s->avctx->time_base.num
290 #if FF_API_TICKS_PER_FRAME
291 ✗ / FFMAX(s->avctx->ticks_per_frame, 1)
292 #endif
293 ;
294 FF_ENABLE_DEPRECATION_WARNINGS
295 }
296
297 63 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
298
299
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 63 put_bits(&s->pb, 11, FFMIN(s->bit_rate / 1024, 2047));
300
301
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 63 if (s->msmpeg4_version >= 3)
302 43 put_bits(&s->pb, 1, s->flipflop_rounding);
303 else
304
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 20 av_assert0(!s->flipflop_rounding);
305 63 }
306
307 161363 void ff_msmpeg4_encode_motion(MpegEncContext * s,
308 int mx, int my)
309 {
310 int code;
311 MVTable *mv;
312
313 /* modulo encoding */
314 /* WARNING : you cannot reach all the MVs even with the modulo
315 encoding. This is a somewhat strange compromise they took !!! */
316
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 161363 if (mx <= -64)
317 ✗ mx += 64;
318
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 161363 else if (mx >= 64)
319 ✗ mx -= 64;
320
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 161363 if (my <= -64)
321 ✗ my += 64;
322
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 161363 else if (my >= 64)
323 ✗ my -= 64;
324
325 161363 mx += 32;
326 161363 my += 32;
327 161363 mv = &ff_mv_tables[s->mv_table_index];
328
329 161363 code = mv->table_mv_index[(mx << 6) | my];
330 161363 put_bits(&s->pb,
331 161363 mv->table_mv_bits[code],
332 161363 mv->table_mv_code[code]);
333
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 161363 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
334 /* escape : code literally */
335 859 put_bits(&s->pb, 6, mx);
336 859 put_bits(&s->pb, 6, my);
337 }
338 161363 }
339
340 249300 void ff_msmpeg4_handle_slices(MpegEncContext *s){
341
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 249300 if (s->mb_x == 0) {
342
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 11850 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
343
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 825 if(s->msmpeg4_version < 4){
344 425 ff_mpeg4_clean_buffers(s);
345 }
346 825 s->first_slice_line = 1;
347 } else {
348 11025 s->first_slice_line = 0;
349 }
350 }
351 249300 }
352
353 102006 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
354 {
355 int range, bit_size, sign, code, bits;
356
357
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 102006 if (val == 0) {
358 /* zero vector */
359 52036 code = 0;
360 52036 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);
361 } else {
362 49970 bit_size = s->f_code - 1;
363 49970 range = 1 << bit_size;
364
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 49970 if (val <= -64)
365 ✗ val += 64;
366
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 49970 else if (val >= 64)
367 ✗ val -= 64;
368
369
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 49970 if (val >= 0) {
370 31351 sign = 0;
371 } else {
372 18619 val = -val;
373 18619 sign = 1;
374 }
375 49970 val--;
376 49970 code = (val >> bit_size) + 1;
377 49970 bits = val & (range - 1);
378
379 49970 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
380
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 49970 if (bit_size > 0) {
381 ✗ put_bits(&s->pb, bit_size, bits);
382 }
383 }
384 102006 }
385
386 189450 void ff_msmpeg4_encode_mb(MpegEncContext * s,
387 int16_t block[6][64],
388 int motion_x, int motion_y)
389 {
390 int cbp, coded_cbp, i;
391 int pred_x, pred_y;
392 uint8_t *coded_block;
393
394 189450 ff_msmpeg4_handle_slices(s);
395
396
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 189450 if (!s->mb_intra) {
397 /* compute cbp */
398 162914 cbp = 0;
399
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 1140398 for (i = 0; i < 6; i++) {
400
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 977484 if (s->block_last_index[i] >= 0)
401 354169 cbp |= 1 << (5 - i);
402 }
403
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 162914 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
404 /* skip macroblock */
405 2259 put_bits(&s->pb, 1, 1);
406 2259 s->last_bits++;
407 2259 s->misc_bits++;
408 2259 s->skip_count++;
409
410 2259 return;
411 }
412
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 160655 if (s->use_skip_mb_code)
413 160655 put_bits(&s->pb, 1, 0); /* mb coded */
414
415
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 160655 if(s->msmpeg4_version<=2){
416 51003 put_bits(&s->pb,
417 51003 ff_v2_mb_type[cbp&3][1],
418 51003 ff_v2_mb_type[cbp&3][0]);
419
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 51003 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
420 10410 else coded_cbp= cbp;
421
422 51003 put_bits(&s->pb,
423 51003 ff_h263_cbpy_tab[coded_cbp>>2][1],
424 51003 ff_h263_cbpy_tab[coded_cbp>>2][0]);
425
426 51003 s->misc_bits += get_bits_diff(s);
427
428 51003 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
429 51003 msmpeg4v2_encode_motion(s, motion_x - pred_x);
430 51003 msmpeg4v2_encode_motion(s, motion_y - pred_y);
431 }else{
432 109652 put_bits(&s->pb,
433 109652 ff_table_mb_non_intra[cbp + 64][1],
434 109652 ff_table_mb_non_intra[cbp + 64][0]);
435
436 109652 s->misc_bits += get_bits_diff(s);
437
438 /* motion vector */
439 109652 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
440 109652 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
441 motion_y - pred_y);
442 }
443
444 160655 s->mv_bits += get_bits_diff(s);
445
446
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 1124585 for (i = 0; i < 6; i++) {
447 963930 ff_msmpeg4_encode_block(s, block[i], i);
448 }
449 160655 s->p_tex_bits += get_bits_diff(s);
450 } else {
451 /* compute cbp */
452 26536 cbp = 0;
453 26536 coded_cbp = 0;
454
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 185752 for (i = 0; i < 6; i++) {
455 int val, pred;
456 159216 val = (s->block_last_index[i] >= 1);
457 159216 cbp |= val << (5 - i);
458
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 159216 if (i < 4) {
459 /* predict value for close blocks only for luma */
460 106144 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
461 106144 *coded_block = val;
462 106144 val = val ^ pred;
463 }
464 159216 coded_cbp |= val << (5 - i);
465 }
466
467
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 26536 if(s->msmpeg4_version<=2){
468
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 8142 if (s->pict_type == AV_PICTURE_TYPE_I) {
469 5985 put_bits(&s->pb,
470 5985 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);
471 } else {
472
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 2157 if (s->use_skip_mb_code)
473 2157 put_bits(&s->pb, 1, 0); /* mb coded */
474 2157 put_bits(&s->pb,
475 2157 ff_v2_mb_type[(cbp&3) + 4][1],
476 2157 ff_v2_mb_type[(cbp&3) + 4][0]);
477 }
478 8142 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
479 8142 put_bits(&s->pb,
480 8142 ff_h263_cbpy_tab[cbp>>2][1],
481 8142 ff_h263_cbpy_tab[cbp>>2][0]);
482 }else{
483
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 18394 if (s->pict_type == AV_PICTURE_TYPE_I) {
484 13158 put_bits(&s->pb,
485 13158 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
486 } else {
487
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 5236 if (s->use_skip_mb_code)
488 5236 put_bits(&s->pb, 1, 0); /* mb coded */
489 5236 put_bits(&s->pb,
490 5236 ff_table_mb_non_intra[cbp][1],
491 5236 ff_table_mb_non_intra[cbp][0]);
492 }
493 18394 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
494
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 18394 if(s->inter_intra_pred){
495 ✗ s->h263_aic_dir=0;
496 ✗ put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
497 }
498 }
499 26536 s->misc_bits += get_bits_diff(s);
500
501
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 185752 for (i = 0; i < 6; i++) {
502 159216 ff_msmpeg4_encode_block(s, block[i], i);
503 }
504 26536 s->i_tex_bits += get_bits_diff(s);
505 26536 s->i_count++;
506 }
507 }
508
509 208050 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
510 {
511 int sign, code;
512 int pred;
513
514 int16_t *dc_val;
515 208050 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
516
517 /* update predictor */
518
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 208050 if (n < 4) {
519 138700 *dc_val = level * s->y_dc_scale;
520 } else {
521 69350 *dc_val = level * s->c_dc_scale;
522 }
523
524 /* do the prediction */
525 208050 level -= pred;
526
527
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 208050 if(s->msmpeg4_version<=2){
528
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 48852 if (n < 4) {
529 32568 put_bits(&s->pb,
530 32568 ff_v2_dc_lum_table[level + 256][1],
531 32568 ff_v2_dc_lum_table[level + 256][0]);
532 }else{
533 16284 put_bits(&s->pb,
534 16284 ff_v2_dc_chroma_table[level + 256][1],
535 16284 ff_v2_dc_chroma_table[level + 256][0]);
536 }
537 }else{
538 159198 sign = 0;
539
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 159198 if (level < 0) {
540 69483 level = -level;
541 69483 sign = 1;
542 }
543 159198 code = level;
544
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 159198 if (code > DC_MAX)
545 46 code = DC_MAX;
546
547
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 159198 if (s->dc_table_index == 0) {
548 ✗ if (n < 4) {
549 ✗ put_bits(&s->pb, ff_table0_dc_lum[code][1], ff_table0_dc_lum[code][0]);
550 } else {
551 ✗ put_bits(&s->pb, ff_table0_dc_chroma[code][1], ff_table0_dc_chroma[code][0]);
552 }
553 } else {
554
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 159198 if (n < 4) {
555 106132 put_bits(&s->pb, ff_table1_dc_lum[code][1], ff_table1_dc_lum[code][0]);
556 } else {
557 53066 put_bits(&s->pb, ff_table1_dc_chroma[code][1], ff_table1_dc_chroma[code][0]);
558 }
559 }
560
561
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 159198 if (code == DC_MAX)
562 46 put_bits(&s->pb, 8, level);
563
564
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 159198 if (level != 0) {
565 144586 put_bits(&s->pb, 1, sign);
566 }
567 }
568 208050 }
569
570 /* Encoding of a block; very similar to MPEG-4 except for a different
571 * escape coding (same as H.263) and more VLC tables. */
572 1482246 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)
573 {
574 1482246 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;
575 int level, run, last, i, j, last_index;
576 int last_non_zero, sign, slevel;
577 int code, run_diff, dc_pred_dir;
578 const RLTable *rl;
579 const uint8_t *scantable;
580
581
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 1482246 if (s->mb_intra) {
582 208050 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);
583 208050 i = 1;
584
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 208050 if (n < 4) {
585 138700 rl = &ff_rl_table[s->rl_table_index];
586 } else {
587 69350 rl = &ff_rl_table[3 + s->rl_chroma_table_index];
588 }
589 208050 run_diff = s->msmpeg4_version>=4;
590 208050 scantable= s->intra_scantable.permutated;
591 } else {
592 1274196 i = 0;
593 1274196 rl = &ff_rl_table[3 + s->rl_table_index];
594
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 1274196 if(s->msmpeg4_version<=2)
595 306018 run_diff = 0;
596 else
597 968178 run_diff = 1;
598 1274196 scantable= s->inter_scantable.permutated;
599 }
600
601 /* recalculate block_last_index for M$ wmv1 */
602
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 1482246 if (s->msmpeg4_version >= 4 && s->block_last_index[n] > 0) {
603
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 9923648 for(last_index=63; last_index>=0; last_index--){
604
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 9923648 if(block[scantable[last_index]]) break;
605 }
606 277524 s->block_last_index[n]= last_index;
607 }else
608 1204722 last_index = s->block_last_index[n];
609 /* AC coefs */
610 1482246 last_non_zero = i - 1;
611
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 18914067 for (; i <= last_index; i++) {
612 17431821 j = scantable[i];
613 17431821 level = block[j];
614
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 17431821 if (level) {
615 4396756 run = i - last_non_zero - 1;
616 4396756 last = (i == last_index);
617 4396756 sign = 0;
618 4396756 slevel = level;
619
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 4396756 if (level < 0) {
620 2195832 sign = 1;
621 2195832 level = -level;
622 }
623
624
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 4396756 if(level<=MAX_LEVEL && run<=MAX_RUN){
625 4396756 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;
626 }
627
628 4396756 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
629
630 4396756 code = get_rl_index(rl, last, run, level);
631 4396756 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
632
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 4396756 if (code == rl->n) {
633 int level1, run1;
634
635 136660 level1 = level - rl->max_level[last][run];
636
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 136660 if (level1 < 1)
637 ✗ goto esc2;
638 136660 code = get_rl_index(rl, last, run, level1);
639
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 136660 if (code == rl->n) {
640 74016 esc2:
641 74016 put_bits(&s->pb, 1, 0);
642
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 74016 if (level > MAX_LEVEL)
643 ✗ goto esc3;
644 74016 run1 = run - rl->max_run[last][level] - run_diff;
645
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 74016 if (run1 < 0)
646 403 goto esc3;
647 73613 code = get_rl_index(rl, last, run1+1, level);
648
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 73613 if (s->msmpeg4_version == 4 && code == rl->n)
649 5317 goto esc3;
650 68296 code = get_rl_index(rl, last, run1, level);
651
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 68296 if (code == rl->n) {
652 13568 esc3:
653 /* third escape */
654 19288 put_bits(&s->pb, 1, 0);
655 19288 put_bits(&s->pb, 1, last);
656
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 19288 if(s->msmpeg4_version>=4){
657
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 6445 if(s->esc3_level_length==0){
658 280 s->esc3_level_length=8;
659 280 s->esc3_run_length= 6;
660 //ESCLVLSZ + ESCRUNSZ
661
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 280 if(s->qscale<8)
662 ✗ put_bits(&s->pb, 6, 3);
663 else
664 280 put_bits(&s->pb, 8, 3);
665 }
666 6445 put_bits(&s->pb, s->esc3_run_length, run);
667 6445 put_bits(&s->pb, 1, sign);
668 6445 put_bits(&s->pb, s->esc3_level_length, level);
669 }else{
670 12843 put_bits(&s->pb, 6, run);
671 12843 put_sbits(&s->pb, 8, slevel);
672 }
673 } else {
674 /* second escape */
675 54728 put_bits(&s->pb, 1, 1);
676 54728 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
677 54728 put_bits(&s->pb, 1, sign);
678 }
679 } else {
680 /* first escape */
681 62644 put_bits(&s->pb, 1, 1);
682 62644 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
683 62644 put_bits(&s->pb, 1, sign);
684 }
685 } else {
686 4260096 put_bits(&s->pb, 1, sign);
687 }
688 4396756 last_non_zero = i;
689 }
690 }
691 1482246 }
692
693 const FFCodec ff_msmpeg4v2_encoder = {
694 .p.name = "msmpeg4v2",
695 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 2"),
696 .p.type = AVMEDIA_TYPE_VIDEO,
697 .p.id = AV_CODEC_ID_MSMPEG4V2,
698 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
699 .p.priv_class = &ff_mpv_enc_class,
700 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
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_msmpeg4v3_encoder = {
709 .p.name = "msmpeg4",
710 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 3"),
711 .p.type = AVMEDIA_TYPE_VIDEO,
712 .p.id = AV_CODEC_ID_MSMPEG4V3,
713 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
714 .p.priv_class = &ff_mpv_enc_class,
715 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
716 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
717 .priv_data_size = sizeof(MSMPEG4EncContext),
718 .init = ff_mpv_encode_init,
719 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
720 .close = ff_mpv_encode_end,
721 };
722
723 const FFCodec ff_wmv1_encoder = {
724 .p.name = "wmv1",
725 CODEC_LONG_NAME("Windows Media Video 7"),
726 .p.type = AVMEDIA_TYPE_VIDEO,
727 .p.id = AV_CODEC_ID_WMV1,
728 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },
729 .p.priv_class = &ff_mpv_enc_class,
730 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
731 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
732 .priv_data_size = sizeof(MSMPEG4EncContext),
733 .init = ff_mpv_encode_init,
734 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
735 .close = ff_mpv_encode_end,
736 };
737