FFmpeg: libavcodec/msmpeg4enc.c Source File

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msmpeg4enc.c

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1 /*

2 * MSMPEG4 encoder backend

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 */

25 /**

26 * @file

27 * MSMPEG4 encoder backend

28 */

30 #include <stdint.h>

31 #include <string.h>

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"

49 static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2];

51 /* build the table which associate a (x,y) motion vector to a vlc */

52 static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])

53 {

54 int i, x, y;

56 tab->table_mv_index = table_mv_index;

58 /* mark all entries as not used */

59 for(i=0;i<4096;i++)

60 tab->table_mv_index[i] = MSMPEG4_MV_TABLES_NB_ELEMS;

62 for (i = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {

63 x = tab->table_mvx[i];

64 y = tab->table_mvy[i];

65 tab->table_mv_index[(x << 6) | y] = i;

66 }

67 }

69 void ff_msmpeg4_code012(PutBitContext *pb, int n)

70 {

71 if (n == 0) {

72 put_bits(pb, 1, 0);

73 } else {

74 put_bits(pb, 1, 1);

75 put_bits(pb, 1, (n >= 2));

76 }

77 }

79 static int get_size_of_code(const RLTable *rl, int last, int run,

80 int level, int intra)

81 {

82 int size=0;

83 int code;

84 int run_diff= intra ? 0 : 1;

86 code = get_rl_index(rl, last, run, level);

87 size+= rl->table_vlc[code][1];

88 if (code == rl->n) {

89 int level1, run1;

91 level1 = level - rl->max_level[last][run];

92 if (level1 < 1)

93 goto esc2;

94 code = get_rl_index(rl, last, run, level1);

95 if (code == rl->n) {

96 esc2:

97 size++;

98 if (level > MAX_LEVEL)

99 goto esc3;

100 run1 = run - rl->max_run[last][level] - run_diff;

101 if (run1 < 0)

102 goto esc3;

103 code = get_rl_index(rl, last, run1, level);

104 if (code == rl->n) {

105 esc3:

106 /* third escape */

107 size+=1+1+6+8;

108 } else {

109 /* second escape */

110 size+= 1+1+ rl->table_vlc[code][1];

111 }

112 } else {

113 /* first escape */

114 size+= 1+1+ rl->table_vlc[code][1];

115 }

116 } else {

117 size++;

118 }

119 return size;

120 }

121

122 static av_cold void msmpeg4_encode_init_static(void)

123 {

124 static uint16_t mv_index_tables[2][4096];

125 init_mv_table(&ff_mv_tables[0], mv_index_tables[0]);

126 init_mv_table(&ff_mv_tables[1], mv_index_tables[1]);

127

128 for (int i = 0; i < NB_RL_TABLES; i++) {

129 for (int level = 1; level <= MAX_LEVEL; level++) {

130 for (int run = 0; run <= MAX_RUN; run++) {

131 for (int last = 0; last < 2; last++) {

132 rl_length[i][level][run][last] = get_size_of_code(&ff_rl_table[i], last, run, level, 0);

133 }

134 }

135 }

136 }

137 }

138

139 av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)

140 {

141 static AVOnce init_static_once = AV_ONCE_INIT;

142

143 ff_msmpeg4_common_init(s);

144 if (s->msmpeg4_version >= 4) {

145 s->min_qcoeff = -255;

146 s->max_qcoeff = 255;

147 }

148

149 /* init various encoding tables */

150 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);

151 }

152

153 static void find_best_tables(MSMPEG4EncContext *ms)

154 {

155 MpegEncContext *const s = &ms->s;

156 int i;

157 int best = 0, best_size = INT_MAX;

158 int chroma_best = 0, best_chroma_size = INT_MAX;

159

160 for(i=0; i<3; i++){

161 int level;

162 int chroma_size=0;

163 int size=0;

164

165 if(i>0){// ;)

166 size++;

167 chroma_size++;

168 }

169 for(level=0; level<=MAX_LEVEL; level++){

170 int run;

171 for(run=0; run<=MAX_RUN; run++){

172 int last;

173 const int last_size= size + chroma_size;

174 for(last=0; last<2; last++){

175 int inter_count = ms->ac_stats[0][0][level][run][last] + ms->ac_stats[0][1][level][run][last];

176 int intra_luma_count = ms->ac_stats[1][0][level][run][last];

177 int intra_chroma_count= ms->ac_stats[1][1][level][run][last];

178

179 if(s->pict_type==AV_PICTURE_TYPE_I){

180 size += intra_luma_count *rl_length[i ][level][run][last];

181 chroma_size+= intra_chroma_count*rl_length[i+3][level][run][last];

182 }else{

183 size+= intra_luma_count *rl_length[i ][level][run][last]

184 +intra_chroma_count*rl_length[i+3][level][run][last]

185 +inter_count *rl_length[i+3][level][run][last];

186 }

187 }

188 if(last_size == size+chroma_size) break;

189 }

190 }

191 if(size<best_size){

192 best_size= size;

193 best= i;

194 }

195 if(chroma_size<best_chroma_size){

196 best_chroma_size= chroma_size;

197 chroma_best= i;

198 }

199 }

200

201 if(s->pict_type==AV_PICTURE_TYPE_P) chroma_best= best;

202

203 memset(ms->ac_stats, 0, sizeof(ms->ac_stats));

204

205 s->rl_table_index = best;

206 s->rl_chroma_table_index= chroma_best;

207

208 if(s->pict_type != s->last_non_b_pict_type){

209 s->rl_table_index= 2;

210 if(s->pict_type==AV_PICTURE_TYPE_I)

211 s->rl_chroma_table_index= 1;

212 else

213 s->rl_chroma_table_index= 2;

214 }

215

216 }

217

218 /* write MSMPEG4 compatible frame header */

219 void ff_msmpeg4_encode_picture_header(MpegEncContext * s)

220 {

221 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;

222

223 find_best_tables(ms);

224

225 align_put_bits(&s->pb);

226 put_bits(&s->pb, 2, s->pict_type - 1);

227

228 put_bits(&s->pb, 5, s->qscale);

229 if(s->msmpeg4_version<=2){

230 s->rl_table_index = 2;

231 s->rl_chroma_table_index = 2;

232 }

233

234 s->dc_table_index = 1;

235 s->mv_table_index = 1; /* only if P-frame */

236 s->use_skip_mb_code = 1; /* only if P-frame */

237 s->per_mb_rl_table = 0;

238 if(s->msmpeg4_version==4)

239 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 if (s->pict_type == AV_PICTURE_TYPE_I) {

244 s->slice_height= s->mb_height/1;

245 put_bits(&s->pb, 5, 0x16 + s->mb_height/s->slice_height);

246

247 if(s->msmpeg4_version==4){

248 ff_msmpeg4_encode_ext_header(s);

249 if(s->bit_rate>MBAC_BITRATE)

250 put_bits(&s->pb, 1, s->per_mb_rl_table);

251 }

252

253 if(s->msmpeg4_version>2){

254 if(!s->per_mb_rl_table){

255 ff_msmpeg4_code012(&s->pb, s->rl_chroma_table_index);

256 ff_msmpeg4_code012(&s->pb, s->rl_table_index);

257 }

258

259 put_bits(&s->pb, 1, s->dc_table_index);

260 }

261 } else {

262 put_bits(&s->pb, 1, s->use_skip_mb_code);

263

264 if(s->msmpeg4_version==4 && s->bit_rate>MBAC_BITRATE)

265 put_bits(&s->pb, 1, s->per_mb_rl_table);

266

267 if(s->msmpeg4_version>2){

268 if(!s->per_mb_rl_table)

269 ff_msmpeg4_code012(&s->pb, s->rl_table_index);

270

271 put_bits(&s->pb, 1, s->dc_table_index);

272

273 put_bits(&s->pb, 1, s->mv_table_index);

274 }

275 }

276

277 s->esc3_level_length= 0;

278 s->esc3_run_length= 0;

279 }

280

281 void ff_msmpeg4_encode_ext_header(MpegEncContext * s)

282 {

283 unsigned fps;

284

285 if (s->avctx->framerate.num > 0 && s->avctx->framerate.den > 0)

286 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 put_bits(&s->pb, 5, FFMIN(fps, 31)); //yes 29.97 -> 29

298

299 put_bits(&s->pb, 11, FFMIN(s->bit_rate / 1024, 2047));

300

301 if (s->msmpeg4_version >= 3)

302 put_bits(&s->pb, 1, s->flipflop_rounding);

303 else

304 av_assert0(!s->flipflop_rounding);

305 }

306

307 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 if (mx <= -64)

317 mx += 64;

318 else if (mx >= 64)

319 mx -= 64;

320 if (my <= -64)

321 my += 64;

322 else if (my >= 64)

323 my -= 64;

324

325 mx += 32;

326 my += 32;

327 mv = &ff_mv_tables[s->mv_table_index];

328

329 code = mv->table_mv_index[(mx << 6) | my];

330 put_bits(&s->pb,

331 mv->table_mv_bits[code],

332 mv->table_mv_code[code]);

333 if (code == MSMPEG4_MV_TABLES_NB_ELEMS) {

334 /* escape : code literally */

335 put_bits(&s->pb, 6, mx);

336 put_bits(&s->pb, 6, my);

337 }

338 }

339

340 void ff_msmpeg4_handle_slices(MpegEncContext *s){

341 if (s->mb_x == 0) {

342 if (s->slice_height && (s->mb_y % s->slice_height) == 0) {

343 if(s->msmpeg4_version < 4){

344 ff_mpeg4_clean_buffers(s);

345 }

346 s->first_slice_line = 1;

347 } else {

348 s->first_slice_line = 0;

349 }

350 }

351 }

352

353 static void msmpeg4v2_encode_motion(MpegEncContext * s, int val)

354 {

355 int range, bit_size, sign, code, bits;

356

357 if (val == 0) {

358 /* zero vector */

359 code = 0;

360 put_bits(&s->pb, ff_mvtab[code][1], ff_mvtab[code][0]);

361 } else {

362 bit_size = s->f_code - 1;

363 range = 1 << bit_size;

364 if (val <= -64)

365 val += 64;

366 else if (val >= 64)

367 val -= 64;

368

369 if (val >= 0) {

370 sign = 0;

371 } else {

372 val = -val;

373 sign = 1;

374 }

375 val--;

376 code = (val >> bit_size) + 1;

377 bits = val & (range - 1);

378

379 put_bits(&s->pb, ff_mvtab[code][1] + 1, (ff_mvtab[code][0] << 1) | sign);

380 if (bit_size > 0) {

381 put_bits(&s->pb, bit_size, bits);

382 }

383 }

384 }

385

386 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 ff_msmpeg4_handle_slices(s);

395

396 if (!s->mb_intra) {

397 /* compute cbp */

398 cbp = 0;

399 for (i = 0; i < 6; i++) {

400 if (s->block_last_index[i] >= 0)

401 cbp |= 1 << (5 - i);

402 }

403 if (s->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {

404 /* skip macroblock */

405 put_bits(&s->pb, 1, 1);

406 s->last_bits++;

407 s->misc_bits++;

408 s->skip_count++;

409

410 return;

411 }

412 if (s->use_skip_mb_code)

413 put_bits(&s->pb, 1, 0); /* mb coded */

414

415 if(s->msmpeg4_version<=2){

416 put_bits(&s->pb,

417 ff_v2_mb_type[cbp&3][1],

418 ff_v2_mb_type[cbp&3][0]);

419 if((cbp&3) != 3) coded_cbp= cbp ^ 0x3C;

420 else coded_cbp= cbp;

421

422 put_bits(&s->pb,

423 ff_h263_cbpy_tab[coded_cbp>>2][1],

424 ff_h263_cbpy_tab[coded_cbp>>2][0]);

425

426 s->misc_bits += get_bits_diff(s);

427

428 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);

429 msmpeg4v2_encode_motion(s, motion_x - pred_x);

430 msmpeg4v2_encode_motion(s, motion_y - pred_y);

431 }else{

432 put_bits(&s->pb,

433 ff_table_mb_non_intra[cbp + 64][1],

434 ff_table_mb_non_intra[cbp + 64][0]);

435

436 s->misc_bits += get_bits_diff(s);

437

438 /* motion vector */

439 ff_h263_pred_motion(s, 0, 0, &pred_x, &pred_y);

440 ff_msmpeg4_encode_motion(s, motion_x - pred_x,

441 motion_y - pred_y);

442 }

443

444 s->mv_bits += get_bits_diff(s);

445

446 for (i = 0; i < 6; i++) {

447 ff_msmpeg4_encode_block(s, block[i], i);

448 }

449 s->p_tex_bits += get_bits_diff(s);

450 } else {

451 /* compute cbp */

452 cbp = 0;

453 coded_cbp = 0;

454 for (i = 0; i < 6; i++) {

455 int val, pred;

456 val = (s->block_last_index[i] >= 1);

457 cbp |= val << (5 - i);

458 if (i < 4) {

459 /* predict value for close blocks only for luma */

460 pred = ff_msmpeg4_coded_block_pred(s, i, &coded_block);

461 *coded_block = val;

462 val = val ^ pred;

463 }

464 coded_cbp |= val << (5 - i);

465 }

466

467 if(s->msmpeg4_version<=2){

468 if (s->pict_type == AV_PICTURE_TYPE_I) {

469 put_bits(&s->pb,

470 ff_v2_intra_cbpc[cbp&3][1], ff_v2_intra_cbpc[cbp&3][0]);

471 } else {

472 if (s->use_skip_mb_code)

473 put_bits(&s->pb, 1, 0); /* mb coded */

474 put_bits(&s->pb,

475 ff_v2_mb_type[(cbp&3) + 4][1],

476 ff_v2_mb_type[(cbp&3) + 4][0]);

477 }

478 put_bits(&s->pb, 1, 0); /* no AC prediction yet */

479 put_bits(&s->pb,

480 ff_h263_cbpy_tab[cbp>>2][1],

481 ff_h263_cbpy_tab[cbp>>2][0]);

482 }else{

483 if (s->pict_type == AV_PICTURE_TYPE_I) {

484 put_bits(&s->pb,

485 ff_msmp4_mb_i_table[coded_cbp][1], ff_msmp4_mb_i_table[coded_cbp][0]);

486 } else {

487 if (s->use_skip_mb_code)

488 put_bits(&s->pb, 1, 0); /* mb coded */

489 put_bits(&s->pb,

490 ff_table_mb_non_intra[cbp][1],

491 ff_table_mb_non_intra[cbp][0]);

492 }

493 put_bits(&s->pb, 1, 0); /* no AC prediction yet */

494 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 s->misc_bits += get_bits_diff(s);

500

501 for (i = 0; i < 6; i++) {

502 ff_msmpeg4_encode_block(s, block[i], i);

503 }

504 s->i_tex_bits += get_bits_diff(s);

505 s->i_count++;

506 }

507 }

508

509 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 pred = ff_msmpeg4_pred_dc(s, n, &dc_val, dir_ptr);

516

517 /* update predictor */

518 if (n < 4) {

519 *dc_val = level * s->y_dc_scale;

520 } else {

521 *dc_val = level * s->c_dc_scale;

522 }

523

524 /* do the prediction */

525 level -= pred;

526

527 if(s->msmpeg4_version<=2){

528 if (n < 4) {

529 put_bits(&s->pb,

530 ff_v2_dc_lum_table[level + 256][1],

531 ff_v2_dc_lum_table[level + 256][0]);

532 }else{

533 put_bits(&s->pb,

534 ff_v2_dc_chroma_table[level + 256][1],

535 ff_v2_dc_chroma_table[level + 256][0]);

536 }

537 }else{

538 sign = 0;

539 if (level < 0) {

540 level = -level;

541 sign = 1;

542 }

543 code = level;

544 if (code > DC_MAX)

545 code = DC_MAX;

546

547 put_bits(&s->pb, ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][1],

548 ff_msmp4_dc_tables[s->dc_table_index][n >= 4][code][0]);

549

550 if (code == DC_MAX)

551 put_bits(&s->pb, 8, level);

552

553 if (level != 0) {

554 put_bits(&s->pb, 1, sign);

555 }

556 }

557 }

558

559 /* Encoding of a block; very similar to MPEG-4 except for a different

560 * escape coding (same as H.263) and more VLC tables. */

561 void ff_msmpeg4_encode_block(MpegEncContext * s, int16_t * block, int n)

562 {

563 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)s;

564 int level, run, last, i, j, last_index;

565 int last_non_zero, sign, slevel;

566 int code, run_diff, dc_pred_dir;

567 const RLTable *rl;

568 const uint8_t *scantable;

569

570 if (s->mb_intra) {

571 msmpeg4_encode_dc(s, block[0], n, &dc_pred_dir);

572 i = 1;

573 if (n < 4) {

574 rl = &ff_rl_table[s->rl_table_index];

575 } else {

576 rl = &ff_rl_table[3 + s->rl_chroma_table_index];

577 }

578 run_diff = s->msmpeg4_version>=4;

579 scantable= s->intra_scantable.permutated;

580 } else {

581 i = 0;

582 rl = &ff_rl_table[3 + s->rl_table_index];

583 if(s->msmpeg4_version<=2)

584 run_diff = 0;

585 else

586 run_diff = 1;

587 scantable= s->inter_scantable.permutated;

588 }

589

590 /* recalculate block_last_index for M$ wmv1 */

591 if (s->msmpeg4_version >= 4 && s->block_last_index[n] > 0) {

592 for(last_index=63; last_index>=0; last_index--){

593 if(block[scantable[last_index]]) break;

594 }

595 s->block_last_index[n]= last_index;

596 }else

597 last_index = s->block_last_index[n];

598 /* AC coefs */

599 last_non_zero = i - 1;

600 for (; i <= last_index; i++) {

601 j = scantable[i];

602 level = block[j];

603 if (level) {

604 run = i - last_non_zero - 1;

605 last = (i == last_index);

606 sign = 0;

607 slevel = level;

608 if (level < 0) {

609 sign = 1;

610 level = -level;

611 }

612

613 if(level<=MAX_LEVEL && run<=MAX_RUN){

614 ms->ac_stats[s->mb_intra][n>3][level][run][last]++;

615 }

616

617 ms->ac_stats[s->mb_intra][n > 3][40][63][0]++; //esc3 like

618

619 code = get_rl_index(rl, last, run, level);

620 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

621 if (code == rl->n) {

622 int level1, run1;

623

624 level1 = level - rl->max_level[last][run];

625 if (level1 < 1)

626 goto esc2;

627 code = get_rl_index(rl, last, run, level1);

628 if (code == rl->n) {

629 esc2:

630 put_bits(&s->pb, 1, 0);

631 if (level > MAX_LEVEL)

632 goto esc3;

633 run1 = run - rl->max_run[last][level] - run_diff;

634 if (run1 < 0)

635 goto esc3;

636 code = get_rl_index(rl, last, run1+1, level);

637 if (s->msmpeg4_version == 4 && code == rl->n)

638 goto esc3;

639 code = get_rl_index(rl, last, run1, level);

640 if (code == rl->n) {

641 esc3:

642 /* third escape */

643 put_bits(&s->pb, 1, 0);

644 put_bits(&s->pb, 1, last);

645 if(s->msmpeg4_version>=4){

646 if(s->esc3_level_length==0){

647 s->esc3_level_length=8;

648 s->esc3_run_length= 6;

649 //ESCLVLSZ + ESCRUNSZ

650 if(s->qscale<8)

651 put_bits(&s->pb, 6, 3);

652 else

653 put_bits(&s->pb, 8, 3);

654 }

655 put_bits(&s->pb, s->esc3_run_length, run);

656 put_bits(&s->pb, 1, sign);

657 put_bits(&s->pb, s->esc3_level_length, level);

658 }else{

659 put_bits(&s->pb, 6, run);

660 put_sbits(&s->pb, 8, slevel);

661 }

662 } else {

663 /* second escape */

664 put_bits(&s->pb, 1, 1);

665 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

666 put_bits(&s->pb, 1, sign);

667 }

668 } else {

669 /* first escape */

670 put_bits(&s->pb, 1, 1);

671 put_bits(&s->pb, rl->table_vlc[code][1], rl->table_vlc[code][0]);

672 put_bits(&s->pb, 1, sign);

673 }

674 } else {

675 put_bits(&s->pb, 1, sign);

676 }

677 last_non_zero = i;

678 }

679 }

680 }

681

682 const FFCodec ff_msmpeg4v2_encoder = {

683 .p.name = "msmpeg4v2",

684 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 2"),

685 .p.type = AVMEDIA_TYPE_VIDEO,

686 .p.id = AV_CODEC_ID_MSMPEG4V2,

687 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

688 .p.priv_class = &ff_mpv_enc_class,

689 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

690 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

691 .priv_data_size = sizeof(MSMPEG4EncContext),

692 .init = ff_mpv_encode_init,

693 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

694 .close = ff_mpv_encode_end,

695 };

696

697 const FFCodec ff_msmpeg4v3_encoder = {

698 .p.name = "msmpeg4",

699 CODEC_LONG_NAME("MPEG-4 part 2 Microsoft variant version 3"),

700 .p.type = AVMEDIA_TYPE_VIDEO,

701 .p.id = AV_CODEC_ID_MSMPEG4V3,

702 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

703 .p.priv_class = &ff_mpv_enc_class,

704 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

705 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

706 .priv_data_size = sizeof(MSMPEG4EncContext),

707 .init = ff_mpv_encode_init,

708 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

709 .close = ff_mpv_encode_end,

710 };

711

712 const FFCodec ff_wmv1_encoder = {

713 .p.name = "wmv1",

714 CODEC_LONG_NAME("Windows Media Video 7"),

715 .p.type = AVMEDIA_TYPE_VIDEO,

716 .p.id = AV_CODEC_ID_WMV1,

717 .p.pix_fmts = (const enum AVPixelFormat[]){ AV_PIX_FMT_YUV420P, AV_PIX_FMT_NONE },

718 .p.priv_class = &ff_mpv_enc_class,

719 .p.capabilities = AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

720 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

721 .priv_data_size = sizeof(MSMPEG4EncContext),

722 .init = ff_mpv_encode_init,

723 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

724 .close = ff_mpv_encode_end,

725 };

FF_ENABLE_DEPRECATION_WARNINGS

#define FF_ENABLE_DEPRECATION_WARNINGS

Definition: internal.h:73

ff_msmp4_dc_tables

const uint32_t ff_msmp4_dc_tables[2][2][120][2]

Definition: msmpeg4_vc1_data.c:83

h263data.h

AVPixelFormat

Pixel format.

Definition: pixfmt.h:71

ff_mpv_enc_class

const AVClass ff_mpv_enc_class

Definition: mpegvideo_enc.c:100

level

uint8_t level

Definition: svq3.c:204

FF_CODEC_CAP_INIT_CLEANUP

#define FF_CODEC_CAP_INIT_CLEANUP

The codec allows calling the close function for deallocation even if the init function returned a fai...

Definition: codec_internal.h:42

get_bits_diff

static int get_bits_diff(MpegEncContext *s)

Definition: mpegvideoenc.h:139

ff_msmpeg4_handle_slices

void ff_msmpeg4_handle_slices(MpegEncContext *s)

Definition: msmpeg4enc.c:340

align_put_bits

static void align_put_bits(PutBitContext *s)

Pad the bitstream with zeros up to the next byte boundary.

Definition: put_bits.h:420

ff_msmpeg4v3_encoder

const FFCodec ff_msmpeg4v3_encoder

Definition: msmpeg4enc.c:697

thread.h

mpegvideoenc.h

static const int8_t mv[256][2]

Definition: 4xm.c:80

put_sbits

static void put_sbits(PutBitContext *pb, int n, int32_t value)

Definition: put_bits.h:281

MAX_RUN

#define MAX_RUN

Definition: rl.h:35

MBAC_BITRATE

#define MBAC_BITRATE

Definition: msmpeg4.h:30

put_bits

static void put_bits(Jpeg2000EncoderContext *s, int val, int n)

put n times val bit

Definition: j2kenc.c:222

ff_msmpeg4_common_init

av_cold void ff_msmpeg4_common_init(MpegEncContext *s)

Definition: msmpeg4.c:114

FFCodec

Definition: codec_internal.h:127

ff_msmpeg4_encode_mb

void ff_msmpeg4_encode_mb(MpegEncContext *s, int16_t block[6][64], int motion_x, int motion_y)

Definition: msmpeg4enc.c:386

mpegvideo.h

FFMAX

#define FFMAX(a, b)

Definition: macros.h:47

ff_rl_table

RLTable ff_rl_table[NB_RL_TABLES]

Definition: msmpeg4data.c:441

ff_mpv_encode_picture

int ff_mpv_encode_picture(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *pic_arg, int *got_packet)

Definition: mpegvideo_enc.c:1756

FFCodec::p

AVCodec p

The public AVCodec.

Definition: codec_internal.h:131

ff_h263_pred_motion

int16_t * ff_h263_pred_motion(MpegEncContext *s, int block, int dir, int *px, int *py)

Definition: h263.c:190

ff_msmpeg4_encode_init

av_cold void ff_msmpeg4_encode_init(MpegEncContext *s)

Definition: msmpeg4enc.c:139

RLTable

RLTable.

Definition: rl.h:39

tab

static const struct twinvq_data tab

Definition: twinvq_data.h:10345

ff_wmv1_encoder

const FFCodec ff_wmv1_encoder

Definition: msmpeg4enc.c:712

val

static double val(void *priv, double ch)

Definition: aeval.c:78

AV_CODEC_ID_MSMPEG4V2

@ AV_CODEC_ID_MSMPEG4V2

Definition: codec_id.h:67

FF_CODEC_ENCODE_CB

#define FF_CODEC_ENCODE_CB(func)

Definition: codec_internal.h:296

MSMPEG4EncContext::ac_stats

unsigned ac_stats[2][2][MAX_LEVEL+1][MAX_RUN+1][2]

[mb_intra][isChroma][level][run][last]

Definition: msmpeg4enc.h:33

NB_RL_TABLES

#define NB_RL_TABLES

Definition: msmpeg4data.h:51

RLTable::n

int n

number of entries of table_vlc minus 1

Definition: rl.h:40

ff_thread_once

static int ff_thread_once(char *control, void(*routine)(void))

Definition: thread.h:205

av_cold

#define av_cold

Definition: attributes.h:90

msmpeg4data.h

RLTable::max_level

int8_t * max_level[2]

encoding & decoding

Definition: rl.h:46

#define s(width, name)

Definition: cbs_vp9.c:198

get_rl_index

static int get_rl_index(const RLTable *rl, int last, int run, int level)

Definition: rl.h:101

AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

#define AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE

This encoder can reorder user opaque values from input AVFrames and return them with corresponding ou...

Definition: codec.h:159

bits

uint8_t bits

Definition: vp3data.h:128

av_assert0

#define av_assert0(cond)

assert() equivalent, that is always enabled.

Definition: avassert.h:40

find_best_tables

static void find_best_tables(MSMPEG4EncContext *ms)

Definition: msmpeg4enc.c:153

AV_PIX_FMT_YUV420P

@ AV_PIX_FMT_YUV420P

planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)

Definition: pixfmt.h:73

PutBitContext

Definition: put_bits.h:50

ff_msmpeg4_encode_motion

void ff_msmpeg4_encode_motion(MpegEncContext *s, int mx, int my)

Definition: msmpeg4enc.c:307

CODEC_LONG_NAME

#define CODEC_LONG_NAME(str)

Definition: codec_internal.h:272

AV_ONCE_INIT

#define AV_ONCE_INIT

Definition: thread.h:203

run

uint8_t run

Definition: svq3.c:203

RLTable::table_vlc

const uint16_t(* table_vlc)[2]

Definition: rl.h:42

ff_table_mb_non_intra

const uint32_t ff_table_mb_non_intra[128][2]

Definition: msmpeg4data.c:39

ff_v2_mb_type

const uint8_t ff_v2_mb_type[8][2]

Definition: msmpeg4data.c:1624

ff_v2_dc_lum_table

uint32_t ff_v2_dc_lum_table[512][2]

Definition: msmpeg4data.c:35

AV_PICTURE_TYPE_I

@ AV_PICTURE_TYPE_I

Intra.

Definition: avutil.h:279

ff_msmp4_mb_i_table

const uint16_t ff_msmp4_mb_i_table[64][2]

Definition: msmpeg4_vc1_data.c:63

ff_v2_dc_chroma_table

uint32_t ff_v2_dc_chroma_table[512][2]

Definition: msmpeg4data.c:36

ff_mpv_encode_end

av_cold int ff_mpv_encode_end(AVCodecContext *avctx)

Definition: mpegvideo_enc.c:987

DC_MAX

#define DC_MAX

Definition: msmpeg4.h:32

AV_CODEC_ID_WMV1

@ AV_CODEC_ID_WMV1

Definition: codec_id.h:69

ff_msmpeg4v2_encoder

const FFCodec ff_msmpeg4v2_encoder

Definition: msmpeg4enc.c:682

AVOnce

#define AVOnce

Definition: thread.h:202

ff_dlog

#define ff_dlog(a,...)

Definition: tableprint_vlc.h:28

MAX_LEVEL

#define MAX_LEVEL

Definition: rl.h:36

MSMPEG4EncContext

Definition: msmpeg4enc.h:29

init

int(* init)(AVBSFContext *ctx)

Definition: dts2pts.c:365

ff_mpeg4_clean_buffers

void ff_mpeg4_clean_buffers(MpegEncContext *s)

Definition: mpeg4video.c:57

codec_internal.h

init_mv_table

static av_cold void init_mv_table(MVTable *tab, uint16_t table_mv_index[4096])

Definition: msmpeg4enc.c:52

MSMPEG4EncContext::s

MpegEncContext s

Definition: msmpeg4enc.h:30

for

for(k=2;k<=8;++k)

Definition: h264pred_template.c:425

ff_h263_cbpy_tab

const uint8_t ff_h263_cbpy_tab[16][2]

Definition: h263data.c:82

size

int size

Definition: twinvq_data.h:10344

ff_msmpeg4_encode_ext_header

void ff_msmpeg4_encode_ext_header(MpegEncContext *s)

Definition: msmpeg4enc.c:281

rl_length

static uint8_t rl_length[NB_RL_TABLES][MAX_LEVEL+1][MAX_RUN+1][2]

Definition: msmpeg4enc.c:49

II_BITRATE

#define II_BITRATE

Definition: msmpeg4.h:29

range

enum AVColorRange range

Definition: mediacodec_wrapper.c:2557

ff_msmpeg4_pred_dc

int ff_msmpeg4_pred_dc(MpegEncContext *s, int n, int16_t **dc_val_ptr, int *dir_ptr)

Definition: msmpeg4.c:194

ff_v2_intra_cbpc

const uint8_t ff_v2_intra_cbpc[4][2]

Definition: msmpeg4data.c:1629

attributes.h

msmpeg4_encode_dc

static void msmpeg4_encode_dc(MpegEncContext *s, int level, int n, int *dir_ptr)

Definition: msmpeg4enc.c:509

ff_msmpeg4_encode_picture_header

void ff_msmpeg4_encode_picture_header(MpegEncContext *s)

Definition: msmpeg4enc.c:219

#define i(width, name, range_min, range_max)

Definition: cbs_h2645.c:255

code

and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code

Definition: filter_design.txt:178

get_size_of_code

static int get_size_of_code(const RLTable *rl, int last, int run, int level, int intra)

Definition: msmpeg4enc.c:79

ff_mv_tables

MVTable ff_mv_tables[2]

Definition: msmpeg4data.c:1613

RLTable::max_run

int8_t * max_run[2]

encoding & decoding

Definition: rl.h:47

FFMIN