FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavcodec/msmpeg4enc.c
Date: 2025-03-22 04:08:01
Exec Total Coverage
Lines: 361 377 95.8%
Functions: 14 14 100.0%
Branches: 181 214 84.6%
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
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 461 put_bits(pb, 2, 2 | (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 >= MSMP4_WMV1) {
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)
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 <= MSMP4_V2) {
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 == MSMP4_WMV1)
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->avctx, "%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 == MSMP4_WMV1) {
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 > MSMP4_V2) {
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 == MSMP4_WMV1 && 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 > MSMP4_V2) {
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 unsigned fps;
283
284
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 63 if (s->avctx->framerate.num > 0 && s->avctx->framerate.den > 0)
285 63 fps = s->avctx->framerate.num / s->avctx->framerate.den;
286 else {
287 FF_DISABLE_DEPRECATION_WARNINGS
288 ✗ fps = s->avctx->time_base.den / s->avctx->time_base.num
289 #if FF_API_TICKS_PER_FRAME
290 ✗ / FFMAX(s->avctx->ticks_per_frame, 1)
291 #endif
292 ;
293 FF_ENABLE_DEPRECATION_WARNINGS
294 }
295
296 63 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29
297
298
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 63 put_bits(&s->pb, 11, FFMIN(s->bit_rate / 1024, 2047));
299
300
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 63 if (s->msmpeg4_version >= MSMP4_V3)
301 43 put_bits(&s->pb, 1, s->flipflop_rounding);
302 else
303
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 20 av_assert0(!s->flipflop_rounding);
304 63 }
305
306 161363 void ff_msmpeg4_encode_motion(MpegEncContext * s,
307 int mx, int my)
308 {
309 int code;
310 MVTable *mv;
311
312 /* modulo encoding */
313 /* WARNING : you cannot reach all the MVs even with the modulo
314 encoding. This is a somewhat strange compromise they took !!! */
315
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 161363 if (mx <= -64)
316 ✗ mx += 64;
317
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 161363 else if (mx >= 64)
318 ✗ mx -= 64;
319
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 161363 if (my <= -64)
320 ✗ my += 64;
321
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 161363 else if (my >= 64)
322 ✗ my -= 64;
323
324 161363 mx += 32;
325 161363 my += 32;
326 161363 mv = &ff_mv_tables[s->mv_table_index];
327
328 161363 code = mv->table_mv_index[(mx << 6) | my];
329 161363 put_bits(&s->pb,
330 161363 mv->table_mv_bits[code],
331 161363 mv->table_mv_code[code]);
332
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 161363 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {
333 /* escape : code literally */
334 859 put_bits(&s->pb, 6, mx);
335 859 put_bits(&s->pb, 6, my);
336 }
337 161363 }
338
339 249300 void ff_msmpeg4_handle_slices(MpegEncContext *s){
340
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 249300 if (s->mb_x == 0) {
341
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 11850 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {
342
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 825 if (s->msmpeg4_version < MSMP4_WMV1) {
343 425 ff_mpeg4_clean_buffers(s);
344 }
345 825 s->first_slice_line = 1;
346 } else {
347 11025 s->first_slice_line = 0;
348 }
349 }
350 249300 }
351
352 102006 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)
353 {
354 int range, bit_size, sign, code, bits;
355
356
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 102006 if (val == 0) {
357 /* zero vector; corresponds to ff_mvtab[0] */
358 52036 put_bits(&s->pb, 1, 0x1);
359 } else {
360 49970 bit_size = s->f_code - 1;
361 49970 range = 1 << bit_size;
362
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 49970 if (val <= -64)
363 ✗ val += 64;
364
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 49970 else if (val >= 64)
365 ✗ val -= 64;
366
367
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 49970 if (val >= 0) {
368 31351 sign = 0;
369 } else {
370 18619 val = -val;
371 18619 sign = 1;
372 }
373 49970 val--;
374 49970 code = (val >> bit_size) + 1;
375 49970 bits = val & (range - 1);
376
377 49970 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);
378
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 49970 if (bit_size > 0) {
379 ✗ put_bits(&s->pb, bit_size, bits);
380 }
381 }
382 102006 }
383
384 189450 void ff_msmpeg4_encode_mb(MpegEncContext * s,
385 int16_t block[6][64],
386 int motion_x, int motion_y)
387 {
388 int cbp, coded_cbp, i;
389 int pred_x, pred_y;
390
391 189450 ff_msmpeg4_handle_slices(s);
392
393
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 189450 if (!s->mb_intra) {
394 /* compute cbp */
395 162914 cbp = 0;
396
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 1140398 for (i = 0; i < 6; i++) {
397
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 977484 if (s->block_last_index[i] >= 0)
398 354169 cbp |= 1 << (5 - i);
399 }
400
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 162914 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {
401 /* skip macroblock */
402 2259 put_bits(&s->pb, 1, 1);
403 2259 s->last_bits++;
404 2259 s->misc_bits++;
405
406 2259 return;
407 }
408
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 160655 if (s->use_skip_mb_code)
409 160655 put_bits(&s->pb, 1, 0); /* mb coded */
410
411
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 160655 if (s->msmpeg4_version <= MSMP4_V2) {
412 51003 put_bits(&s->pb,
413 51003 ff_v2_mb_type[cbp&3][1],
414 51003 ff_v2_mb_type[cbp&3][0]);
415
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 51003 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;
416 10410 else coded_cbp= cbp;
417
418 51003 put_bits(&s->pb,
419 51003 ff_h263_cbpy_tab[coded_cbp>>2][1],
420 51003 ff_h263_cbpy_tab[coded_cbp>>2][0]);
421
422 51003 s->misc_bits += get_bits_diff(s);
423
424 51003 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
425 51003 msmpeg4v2_encode_motion(s, motion_x - pred_x);
426 51003 msmpeg4v2_encode_motion(s, motion_y - pred_y);
427 }else{
428 109652 put_bits(&s->pb,
429 109652 ff_table_mb_non_intra[cbp + 64][1],
430 109652 ff_table_mb_non_intra[cbp + 64][0]);
431
432 109652 s->misc_bits += get_bits_diff(s);
433
434 /* motion vector */
435 109652 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);
436 109652 ff_msmpeg4_encode_motion(s, motion_x - pred_x,
437 motion_y - pred_y);
438 }
439
440 160655 s->mv_bits += get_bits_diff(s);
441
442
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 1124585 for (i = 0; i < 6; i++) {
443 963930 ff_msmpeg4_encode_block(s, block[i], i);
444 }
445 160655 s->p_tex_bits += get_bits_diff(s);
446 } else {
447 /* compute cbp */
448 26536 cbp = 0;
449
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 185752 for (int i = 0; i < 6; i++) {
450 159216 int val = (s->block_last_index[i] >= 1);
451 159216 cbp |= val << (5 - i);
452 }
453
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 26536 if (s->msmpeg4_version <= MSMP4_V2) {
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 /* compute coded_cbp; the 0x3 corresponds to chroma cbp;
471 * luma coded_cbp are set in the loop below */
472 13158 coded_cbp = cbp & 0x3;
473
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 65790 for (int i = 0; i < 4; i++) {
474 uint8_t *coded_block;
475 52632 int pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);
476 52632 int val = (s->block_last_index[i] >= 1);
477 52632 *coded_block = val;
478 52632 val ^= pred;
479 52632 coded_cbp |= val << (5 - i);
480 }
481
482 13158 put_bits(&s->pb,
483 13158 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);
484 } else {
485
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 5236 if (s->use_skip_mb_code)
486 5236 put_bits(&s->pb, 1, 0); /* mb coded */
487 5236 put_bits(&s->pb,
488 5236 ff_table_mb_non_intra[cbp][1],
489 5236 ff_table_mb_non_intra[cbp][0]);
490 }
491 18394 put_bits(&s->pb, 1, 0); /* no AC prediction yet */
492
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 18394 if(s->inter_intra_pred){
493 ✗ s->h263_aic_dir=0;
494 ✗ put_bits(&s->pb, ff_table_inter_intra[s->h263_aic_dir][1], ff_table_inter_intra[s->h263_aic_dir][0]);
495 }
496 }
497 26536 s->misc_bits += get_bits_diff(s);
498
499
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 185752 for (i = 0; i < 6; i++) {
500 159216 ff_msmpeg4_encode_block(s, block[i], i);
501 }
502 26536 s->i_tex_bits += get_bits_diff(s);
503 26536 s->i_count++;
504 }
505 }
506
507 208050 static void msmpeg4_encode_dc(MpegEncContext * s, int level, int n, int *dir_ptr)
508 {
509 int sign, code;
510 int pred;
511
512 int16_t *dc_val;
513 208050 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);
514
515 /* update predictor */
516
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 208050 if (n < 4) {
517 138700 *dc_val = level * s->y_dc_scale;
518 } else {
519 69350 *dc_val = level * s->c_dc_scale;
520 }
521
522 /* do the prediction */
523 208050 level -= pred;
524
525
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 208050 if (s->msmpeg4_version <= MSMP4_V2) {
526
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 48852 if (n < 4) {
527 32568 put_bits(&s->pb,
528 32568 ff_v2_dc_lum_table[level + 256][1],
529 32568 ff_v2_dc_lum_table[level + 256][0]);
530 }else{
531 16284 put_bits(&s->pb,
532 16284 ff_v2_dc_chroma_table[level + 256][1],
533 16284 ff_v2_dc_chroma_table[level + 256][0]);
534 }
535 }else{
536 159198 sign = 0;
537
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 159198 if (level < 0) {
538 69483 level = -level;
539 69483 sign = 1;
540 }
541 159198 code = level;
542
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 159198 if (code > DC_MAX)
543 46 code = DC_MAX;
544
545 159198 put_bits(&s->pb, ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][1],
546 159198 ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][0]);
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 >= MSMP4_WMV1;
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 1274196 run_diff = s->msmpeg4_version > MSMP4_V2;
582 1274196 scantable= s->inter_scantable.permutated;
583 }
584
585 /* recalculate block_last_index for M$ wmv1 */
586
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 1482246 if (s->msmpeg4_version >= MSMP4_WMV1 && s->block_last_index[n] > 0) {
587
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 9923648 for(last_index=63; last_index>=0; last_index--){
588
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 9923648 if(block[scantable[last_index]]) break;
589 }
590 277524 s->block_last_index[n]= last_index;
591 }else
592 1204722 last_index = s->block_last_index[n];
593 /* AC coefs */
594 1482246 last_non_zero = i - 1;
595
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 18914067 for (; i <= last_index; i++) {
596 17431821 j = scantable[i];
597 17431821 level = block[j];
598
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 17431821 if (level) {
599 4396756 run = i - last_non_zero - 1;
600 4396756 last = (i == last_index);
601 4396756 sign = 0;
602 4396756 slevel = level;
603
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 4396756 if (level < 0) {
604 2195832 sign = 1;
605 2195832 level = -level;
606 }
607
608
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 4396756 if(level<=MAX_LEVEL && run<=MAX_RUN){
609 4396756 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;
610 }
611
612 4396756 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like
613
614 4396756 code = get_rl_index(rl, last, run, level);
615 4396756 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
616
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 4396756 if (code == rl->n) {
617 int level1, run1;
618
619 136660 level1 = level - rl->max_level[last][run];
620
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 136660 if (level1 < 1)
621 ✗ goto esc2;
622 136660 code = get_rl_index(rl, last, run, level1);
623
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 136660 if (code == rl->n) {
624 74016 esc2:
625 74016 put_bits(&s->pb, 1, 0);
626
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 74016 if (level > MAX_LEVEL)
627 ✗ goto esc3;
628 74016 run1 = run - rl->max_run[last][level] - run_diff;
629
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 74016 if (run1 < 0)
630 403 goto esc3;
631 73613 code = get_rl_index(rl, last, run1+1, level);
632
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 73613 if (s->msmpeg4_version == MSMP4_WMV1 && code == rl->n)
633 5317 goto esc3;
634 68296 code = get_rl_index(rl, last, run1, level);
635
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 68296 if (code == rl->n) {
636 13568 esc3:
637 /* third escape */
638 19288 put_bits(&s->pb, 1, 0);
639 19288 put_bits(&s->pb, 1, last);
640
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 19288 if (s->msmpeg4_version >= MSMP4_WMV1) {
641
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 6445 if(s->esc3_level_length==0){
642 280 s->esc3_level_length=8;
643 280 s->esc3_run_length= 6;
644 //ESCLVLSZ + ESCRUNSZ
645
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 280 if(s->qscale<8)
646 ✗ put_bits(&s->pb, 6, 3);
647 else
648 280 put_bits(&s->pb, 8, 3);
649 }
650 6445 put_bits(&s->pb, s->esc3_run_length, run);
651 6445 put_bits(&s->pb, 1, sign);
652 6445 put_bits(&s->pb, s->esc3_level_length, level);
653 }else{
654 12843 put_bits(&s->pb, 6, run);
655 12843 put_sbits(&s->pb, 8, slevel);
656 }
657 } else {
658 /* second escape */
659 54728 put_bits(&s->pb, 1, 1);
660 54728 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
661 54728 put_bits(&s->pb, 1, sign);
662 }
663 } else {
664 /* first escape */
665 62644 put_bits(&s->pb, 1, 1);
666 62644 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);
667 62644 put_bits(&s->pb, 1, sign);
668 }
669 } else {
670 4260096 put_bits(&s->pb, 1, sign);
671 }
672 4396756 last_non_zero = i;
673 }
674 }
675 1482246 }
676
677 const FFCodec ff_msmpeg4v2_encoder = {
678 .p.name = "msmpeg4v2",
679 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 2"),
680 .p.type = AVMEDIA_TYPE_VIDEO,
681 .p.id = AV_CODEC_ID_MSMPEG4V2,
682 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
683 .color_ranges = AVCOL_RANGE_MPEG,
684 .p.priv_class = &ff_mpv_enc_class,
685 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
686 .caps_internal = 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 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 3"),
696 .p.type = AVMEDIA_TYPE_VIDEO,
697 .p.id = AV_CODEC_ID_MSMPEG4V3,
698 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
699 .color_ranges = AVCOL_RANGE_MPEG,
700 .p.priv_class = &ff_mpv_enc_class,
701 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
702 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
703 .priv_data_size = sizeof(MSMPEG4EncContext),
704 .init = ff_mpv_encode_init,
705 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
706 .close = ff_mpv_encode_end,
707 };
708
709 const FFCodec ff_wmv1_encoder = {
710 .p.name = "wmv1",
711 CODEC_LONG_NAME("Windows Media Video 7"),
712 .p.type = AVMEDIA_TYPE_VIDEO,
713 .p.id = AV_CODEC_ID_WMV1,
714 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),
715 .color_ranges = AVCOL_RANGE_MPEG,
716 .p.priv_class = &ff_mpv_enc_class,
717 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,
718 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,
719 .priv_data_size = sizeof(MSMPEG4EncContext),
720 .init = ff_mpv_encode_init,
721 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),
722 .close = ff_mpv_encode_end,
723 };
724