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 #define NO_SLICE_THREADING_HERE

35 #include "libavutil/attributes.h"

36 #include "libavutil/avutil.h"

37 #include "libavutil/thread.h"

38 #include "codec_internal.h"

39 #include "mpegvideo.h"

40 #include "mpegvideoenc.h"

41 #include "h263.h"

42 #include "h263data.h"

43 #include "mpeg4video.h"

44 #include "msmpeg4.h"

45 #include "msmpeg4data.h"

46 #include "msmpeg4_vc1_data.h"

47 #include "msmpeg4enc.h"

48 #include "put_bits.h"

49 #include "rl.h"

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

53 // The lowest 8 bits of each entry are length, the other bits are the code.

54 // The index of the (mx, my) entry is (mx * 64) + my.

55 static uint32_t mv_vector_tables[2][4096];

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

58 static av_cold void init_mv_table(const uint16_t mv_table[], const uint8_t mv_table_lens[],

59 uint32_t mv_vector_table[4096],

60 unsigned escape_code, int escape_length)

61 {

62 for (int i = 0; i < 4096; i++) {

63 // Initialize to the table to "escaped". This code is equivalent to

64 // the following double loop (with x and y ranging over 0..63):

65 // tab[x * 64 + y] = (esc_code << 20) | (x << 14) | (y << 8) | esc_length

66 mv_vector_table[i] = (escape_code << 20) | (i << 8) | escape_length;

67 }

69 for (uint32_t i = 0, code = 0; i < MSMPEG4_MV_TABLES_NB_ELEMS; i++) {

70 int sym = mv_table[i];

71 int len = mv_table_lens[i];

72 int x = sym >> 8;

73 int y = sym & 0xFF;

74 // We ignore the escape value here and restore it after the loop.

75 mv_vector_table[(x << 6) | y] = (code >> (24 - len)) | len;

76 code += 1U << (32 - len);

77 }

78 mv_vector_table[0] = (escape_code << 20) | escape_length;

79 }

81 void ff_msmpeg4_code012(PutBitContext *pb, int n)

82 {

83 if (n == 0) {

84 put_bits(pb, 1, 0);

85 } else {

86 put_bits(pb, 2, 2 | (n >= 2));

87 }

88 }

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

91 int level, int intra)

92 {

93 int size=0;

94 int code;

95 int run_diff= intra ? 0 : 1;

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

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

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

100 int level1, run1;

101

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

103 if (level1 < 1)

104 goto esc2;

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

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

107 esc2:

108 size++;

109 if (level > MAX_LEVEL)

110 goto esc3;

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

112 if (run1 < 0)

113 goto esc3;

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

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

116 esc3:

117 /* third escape */

118 size+=1+1+6+8;

119 } else {

120 /* second escape */

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

122 }

123 } else {

124 /* first escape */

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

126 }

127 } else {

128 size++;

129 }

130 return size;

131 }

132

133 static av_cold void msmpeg4_encode_init_static(void)

134 {

135 init_mv_table(ff_msmp4_mv_table0, ff_msmp4_mv_table0_lens,

136 mv_vector_tables[0], 0x0000, 8 + 12);

137 init_mv_table(ff_msmp4_mv_table1, ff_msmp4_mv_table1_lens,

138 mv_vector_tables[1], 0x000b, 4 + 12);

139

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

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

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

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

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

145 }

146 }

147 }

148 }

149 }

150

151 static void find_best_tables(MSMPEG4EncContext *ms)

152 {

153 MPVEncContext *const s = &ms->m.s;

154 int i;

155 int best = 0, best_size = INT_MAX;

156 int chroma_best = 0, best_chroma_size = INT_MAX;

157

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

159 int level;

160 int chroma_size=0;

161 int size=0;

162

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

164 size++;

165 chroma_size++;

166 }

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

168 int run;

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

170 int last;

171 const int last_size= size + chroma_size;

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

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

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

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

176

177 if (s->c.pict_type == AV_PICTURE_TYPE_I) {

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

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

180 }else{

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

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

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

184 }

185 }

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

187 }

188 }

189 if(size<best_size){

190 best_size= size;

191 best= i;

192 }

193 if(chroma_size<best_chroma_size){

194 best_chroma_size= chroma_size;

195 chroma_best= i;

196 }

197 }

198

199 if (s->c.pict_type == AV_PICTURE_TYPE_P) chroma_best = best;

200

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

202

203 ms->rl_table_index = best;

204 ms->rl_chroma_table_index = chroma_best;

205

206 if (s->c.pict_type != ms->m.last_non_b_pict_type) {

207 ms->rl_table_index= 2;

208 if (s->c.pict_type == AV_PICTURE_TYPE_I)

209 ms->rl_chroma_table_index = 1;

210 else

211 ms->rl_chroma_table_index = 2;

212 }

213

214 }

215

216 /* write MSMPEG4 compatible frame header */

217 static int msmpeg4_encode_picture_header(MPVMainEncContext *const m)

218 {

219 MSMPEG4EncContext *const ms = (MSMPEG4EncContext*)m;

220 MPVEncContext *const s = &m->s;

221

222 find_best_tables(ms);

223

224 put_bits_assume_flushed(&s->pb);

225

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

227

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

229 if (s->c.msmpeg4_version <= MSMP4_V2) {

230 ms->rl_table_index = 2;

231 ms->rl_chroma_table_index = 2;

232 }

233

234 ms->dc_table_index = 1;

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

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

237 ms->per_mb_rl_table = 0;

238 if (s->c.msmpeg4_version == MSMP4_WMV1)

239 s->c.inter_intra_pred = s->c.width * s->c.height < 320*240 &&

240 m->bit_rate <= II_BITRATE &&

241 s->c.pict_type == AV_PICTURE_TYPE_P;

242 ff_dlog(s->c.avctx, "%d %"PRId64" %d %d %d\n", s->c.pict_type, m->bit_rate,

243 s->c.inter_intra_pred, s->c.width, s->c.height);

244

245 if (s->c.pict_type == AV_PICTURE_TYPE_I) {

246 s->slice_height = s->c.mb_height/1;

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

248

249 if (s->c.msmpeg4_version == MSMP4_WMV1) {

250 ff_msmpeg4_encode_ext_header(s);

251 if (m->bit_rate > MBAC_BITRATE)

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

253 }

254

255 if (s->c.msmpeg4_version > MSMP4_V2) {

256 if (!ms->per_mb_rl_table){

257 ff_msmpeg4_code012(&s->pb, ms->rl_chroma_table_index);

258 ff_msmpeg4_code012(&s->pb, ms->rl_table_index);

259 }

260

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

262 }

263 } else {

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

265

266 if (s->c.msmpeg4_version == MSMP4_WMV1 && m->bit_rate > MBAC_BITRATE)

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

268

269 if (s->c.msmpeg4_version > MSMP4_V2) {

270 if (!ms->per_mb_rl_table)

271 ff_msmpeg4_code012(&s->pb, ms->rl_table_index);

272

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

274

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

276 }

277 }

278

279 s->esc3_level_length = 0;

280 ms->esc3_run_length = 0;

281

282 return 0;

283 }

284

285 void ff_msmpeg4_encode_ext_header(MPVEncContext *const s)

286 {

287 const MPVMainEncContext *const m = slice_to_mainenc(s);

288 unsigned fps;

289

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

291 fps = s->c.avctx->framerate.num / s->c.avctx->framerate.den;

292 else {

293 fps = s->c.avctx->time_base.den / s->c.avctx->time_base.num;

294 }

295

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

297

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

299

300 if (s->c.msmpeg4_version >= MSMP4_V3)

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

302 else

303 av_assert0(!s->flipflop_rounding);

304 }

305

306 void ff_msmpeg4_encode_motion(MSMPEG4EncContext *const ms,

307 int mx, int my)

308 {

309 MPVEncContext *const s = &ms->m.s;

310 const uint32_t *const mv_vector_table = mv_vector_tables[ms->mv_table_index];

311 uint32_t code;

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

328 code = mv_vector_table[(mx << 6) | my];

329 put_bits(&s->pb, code & 0xff, code >> 8);

330 }

331

332 void ff_msmpeg4_handle_slices(MPVEncContext *const s)

333 {

334 if (s->c.mb_x == 0) {

335 if (s->slice_height && (s->c.mb_y % s->slice_height) == 0) {

336 if (s->c.msmpeg4_version < MSMP4_WMV1)

337 ff_mpeg4_clean_buffers(&s->c);

338 s->c.first_slice_line = 1;

339 } else {

340 s->c.first_slice_line = 0;

341 }

342 }

343 }

344

345 static void msmpeg4v2_encode_motion(MPVEncContext *const s, int val)

346 {

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

348

349 if (val == 0) {

350 /* zero vector; corresponds to ff_mvtab[0] */

351 put_bits(&s->pb, 1, 0x1);

352 } else {

353 bit_size = s->f_code - 1;

354 range = 1 << bit_size;

355 if (val <= -64)

356 val += 64;

357 else if (val >= 64)

358 val -= 64;

359

360 if (val >= 0) {

361 sign = 0;

362 } else {

363 val = -val;

364 sign = 1;

365 }

366 val--;

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

368 bits = val & (range - 1);

369

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

371 if (bit_size > 0) {

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

373 }

374 }

375 }

376

377 static void msmpeg4_encode_mb(MPVEncContext *const s,

378 int16_t block[][64],

379 int motion_x, int motion_y)

380 {

381 MSMPEG4EncContext *const ms = mpv_to_msmpeg4(s);

382 int cbp, coded_cbp, i;

383 int pred_x, pred_y;

384

385 ff_msmpeg4_handle_slices(s);

386

387 if (!s->c.mb_intra) {

388 /* compute cbp */

389 cbp = 0;

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

391 if (s->c.block_last_index[i] >= 0)

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

393 }

394 if (ms->use_skip_mb_code && (cbp | motion_x | motion_y) == 0) {

395 /* skip macroblock */

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

397 s->last_bits++;

398 s->misc_bits++;

399

400 return;

401 }

402 if (ms->use_skip_mb_code)

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

404

405 if (s->c.msmpeg4_version <= MSMP4_V2) {

406 put_bits(&s->pb,

407 ff_v2_mb_type[cbp&3][1],

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

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

410 else coded_cbp= cbp;

411

412 put_bits(&s->pb,

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

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

415

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

417

418 ff_h263_pred_motion(&s->c, 0, 0, &pred_x, &pred_y);

419 msmpeg4v2_encode_motion(s, motion_x - pred_x);

420 msmpeg4v2_encode_motion(s, motion_y - pred_y);

421 }else{

422 put_bits(&s->pb,

423 ff_table_mb_non_intra[cbp + 64][1],

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

425

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

427

428 /* motion vector */

429 ff_h263_pred_motion(&s->c, 0, 0, &pred_x, &pred_y);

430 ff_msmpeg4_encode_motion(ms, motion_x - pred_x,

431 motion_y - pred_y);

432 }

433

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

435

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

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

438 }

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

440 } else {

441 /* compute cbp */

442 cbp = 0;

443 for (int i = 0; i < 6; i++) {

444 int val = (s->c.block_last_index[i] >= 1);

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

446 }

447 if (s->c.msmpeg4_version <= MSMP4_V2) {

448 if (s->c.pict_type == AV_PICTURE_TYPE_I) {

449 put_bits(&s->pb,

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

451 } else {

452 if (ms->use_skip_mb_code)

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

454 put_bits(&s->pb,

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

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

457 }

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

459 put_bits(&s->pb,

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

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

462 }else{

463 if (s->c.pict_type == AV_PICTURE_TYPE_I) {

464 /* compute coded_cbp; the 0x3 corresponds to chroma cbp;

465 * luma coded_cbp are set in the loop below */

466 coded_cbp = cbp & 0x3;

467 for (int i = 0; i < 4; i++) {

468 uint8_t *coded_block;

469 int pred = ff_msmpeg4_coded_block_pred(&s->c, i, &coded_block);

470 int val = (s->c.block_last_index[i] >= 1);

471 *coded_block = val;

472 val ^= pred;

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

474 }

475

476 put_bits(&s->pb,

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

478 } else {

479 if (ms->use_skip_mb_code)

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

481 put_bits(&s->pb,

482 ff_table_mb_non_intra[cbp][1],

483 ff_table_mb_non_intra[cbp][0]);

484 }

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

486 if (s->c.inter_intra_pred) {

487 s->c.h263_aic_dir = 0;

488 put_bits(&s->pb, ff_table_inter_intra[s->c.h263_aic_dir][1],

489 ff_table_inter_intra[s->c.h263_aic_dir][0]);

490 }

491 }

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

493

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

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

496 }

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

498 s->i_count++;

499 }

500 }

501

502 static void msmpeg4_encode_dc(MSMPEG4EncContext *const ms, int level, int n, int *dir_ptr)

503 {

504 MPVEncContext *const s = &ms->m.s;

505 int sign, code;

506 int pred;

507

508 int16_t *dc_val;

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

510

511 /* update predictor */

512 if (n < 4) {

513 *dc_val = level * s->c.y_dc_scale;

514 } else {

515 *dc_val = level * s->c.c_dc_scale;

516 }

517

518 /* do the prediction */

519 level -= pred;

520

521 if (s->c.msmpeg4_version <= MSMP4_V2) {

522 if (n < 4) {

523 put_bits(&s->pb,

524 ff_v2_dc_lum_table[level + 256][1],

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

526 }else{

527 put_bits(&s->pb,

528 ff_v2_dc_chroma_table[level + 256][1],

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

530 }

531 }else{

532 sign = 0;

533 if (level < 0) {

534 level = -level;

535 sign = 1;

536 }

537 code = level;

538 if (code > DC_MAX)

539 code = DC_MAX;

540

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

542 ff_msmp4_dc_tables[ms->dc_table_index][n >= 4][code][0]);

543

544 if (code == DC_MAX)

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

546

547 if (level != 0) {

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

549 }

550 }

551 }

552

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

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

555 void ff_msmpeg4_encode_block(MPVEncContext *const s, int16_t * block, int n)

556 {

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

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

559 int last_non_zero, sign, slevel;

560 int code, run_diff, dc_pred_dir;

561 const RLTable *rl;

562 const uint8_t *scantable;

563

564 if (s->c.mb_intra) {

565 msmpeg4_encode_dc(ms, block[0], n, &dc_pred_dir);

566 i = 1;

567 if (n < 4) {

568 rl = &ff_rl_table[ms->rl_table_index];

569 } else {

570 rl = &ff_rl_table[3 + ms->rl_chroma_table_index];

571 }

572 run_diff = s->c.msmpeg4_version >= MSMP4_WMV1;

573 scantable = s->c.intra_scantable.permutated;

574 } else {

575 i = 0;

576 rl = &ff_rl_table[3 + ms->rl_table_index];

577 run_diff = s->c.msmpeg4_version > MSMP4_V2;

578 scantable = s->c.inter_scantable.permutated;

579 }

580

581 /* recalculate block_last_index for M$ wmv1 */

582 if (s->c.msmpeg4_version >= MSMP4_WMV1 && s->c.block_last_index[n] > 0) {

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

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

585 }

586 s->c.block_last_index[n] = last_index;

587 }else

588 last_index = s->c.block_last_index[n];

589 /* AC coefs */

590 last_non_zero = i - 1;

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

592 j = scantable[i];

593 level = block[j];

594 if (level) {

595 run = i - last_non_zero - 1;

596 last = (i == last_index);

597 sign = 0;

598 slevel = level;

599 if (level < 0) {

600 sign = 1;

601 level = -level;

602 }

603

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

605 ms->ac_stats[s->c.mb_intra][n>3][level][run][last]++;

606 }

607

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

609

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

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

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

613 int level1, run1;

614

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

616 if (level1 < 1)

617 goto esc2;

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

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

620 esc2:

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

622 if (level > MAX_LEVEL)

623 goto esc3;

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

625 if (run1 < 0)

626 goto esc3;

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

628 if (s->c.msmpeg4_version == MSMP4_WMV1 && code == rl->n)

629 goto esc3;

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

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

632 esc3:

633 /* third escape */

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

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

636 if (s->c.msmpeg4_version >= MSMP4_WMV1) {

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

638 s->esc3_level_length = 8;

639 ms->esc3_run_length = 6;

640 //ESCLVLSZ + ESCRUNSZ

641 if (s->c.qscale < 8)

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

643 else

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

645 }

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

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

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

649 }else{

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

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

652 }

653 } else {

654 /* second escape */

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

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

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

658 }

659 } else {

660 /* first escape */

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

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

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

664 }

665 } else {

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

667 }

668 last_non_zero = i;

669 }

670 }

671 }

672

673 av_cold void ff_msmpeg4_encode_init(MPVMainEncContext *const m)

674 {

675 MPVEncContext *const s = &m->s;

676 static AVOnce init_static_once = AV_ONCE_INIT;

677

678 ff_msmpeg4_common_init(&s->c);

679

680 if (s->c.msmpeg4_version <= MSMP4_WMV1) {

681 m->encode_picture_header = msmpeg4_encode_picture_header;

682 s->encode_mb = msmpeg4_encode_mb;

683 }

684

685 if (s->c.msmpeg4_version >= MSMP4_WMV1) {

686 s->min_qcoeff = -255;

687 s->max_qcoeff = 255;

688 }

689

690 /* init various encoding tables */

691 ff_thread_once(&init_static_once, msmpeg4_encode_init_static);

692 }

693

694 const FFCodec ff_msmpeg4v2_encoder = {

695 .p.name = "msmpeg4v2",

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

697 .p.type = AVMEDIA_TYPE_VIDEO,

698 .p.id = AV_CODEC_ID_MSMPEG4V2,

699 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),

700 .color_ranges = AVCOL_RANGE_MPEG,

701 .p.priv_class = &ff_mpv_enc_class,

702 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

703 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

704 .priv_data_size = sizeof(MSMPEG4EncContext),

705 .init = ff_mpv_encode_init,

706 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

707 .close = ff_mpv_encode_end,

708 };

709

710 const FFCodec ff_msmpeg4v3_encoder = {

711 .p.name = "msmpeg4",

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

713 .p.type = AVMEDIA_TYPE_VIDEO,

714 .p.id = AV_CODEC_ID_MSMPEG4V3,

715 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),

716 .color_ranges = AVCOL_RANGE_MPEG,

717 .p.priv_class = &ff_mpv_enc_class,

718 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

719 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

720 .priv_data_size = sizeof(MSMPEG4EncContext),

721 .init = ff_mpv_encode_init,

722 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

723 .close = ff_mpv_encode_end,

724 };

725

726 const FFCodec ff_wmv1_encoder = {

727 .p.name = "wmv1",

728 CODEC_LONG_NAME("Windows Media Video 7"),

729 .p.type = AVMEDIA_TYPE_VIDEO,

730 .p.id = AV_CODEC_ID_WMV1,

731 CODEC_PIXFMTS(AV_PIX_FMT_YUV420P),

732 .color_ranges = AVCOL_RANGE_MPEG,

733 .p.priv_class = &ff_mpv_enc_class,

734 .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_ENCODER_REORDERED_OPAQUE,

735 .caps_internal = FF_CODEC_CAP_INIT_CLEANUP,

736 .priv_data_size = sizeof(MSMPEG4EncContext),

737 .init = ff_mpv_encode_init,

738 FF_CODEC_ENCODE_CB(ff_mpv_encode_picture),

739 .close = ff_mpv_encode_end,

740 };

CODEC_PIXFMTS

#define CODEC_PIXFMTS(...)

Definition: codec_internal.h:392

ff_msmp4_dc_tables

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

Definition: msmpeg4_vc1_data.c:83

MPVMainEncContext::bit_rate

int64_t bit_rate

Definition: mpegvideoenc.h:250

h263data.h

ff_mpv_enc_class

const AVClass ff_mpv_enc_class

Definition: mpegvideo_enc.c:102

level

uint8_t level

Definition: svq3.c:208

MPVEncContext

Definition: mpegvideoenc.h:46

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

ff_msmpeg4v3_encoder

const FFCodec ff_msmpeg4v3_encoder

Definition: msmpeg4enc.c:710

thread.h

ff_msmpeg4_encode_init

av_cold void ff_msmpeg4_encode_init(MPVMainEncContext *const m)

Definition: msmpeg4enc.c:673

mpegvideoenc.h

ff_msmpeg4_handle_slices

void ff_msmpeg4_handle_slices(MPVEncContext *const s)

Definition: msmpeg4enc.c:332

put_sbits

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

Definition: put_bits.h:291

MAX_RUN

#define MAX_RUN

Definition: rl.h:35

MSMPEG4EncContext::use_skip_mb_code

int use_skip_mb_code

Definition: msmpeg4enc.h:36

msmpeg4_encode_mb

static void msmpeg4_encode_mb(MPVEncContext *const s, int16_t block[][64], int motion_x, int motion_y)

Definition: msmpeg4enc.c:377

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:224

ff_msmpeg4_common_init

av_cold void ff_msmpeg4_common_init(MpegEncContext *s)

Definition: msmpeg4.c:118

FFCodec

Definition: codec_internal.h:127

mpegvideo.h

ff_rl_table

RLTable ff_rl_table[NB_RL_TABLES]

Definition: msmpeg4data.c:441

MPVMainEncContext::encode_picture_header

int(* encode_picture_header)(struct MPVMainEncContext *m)

Definition: mpegvideoenc.h:247

ff_mpv_encode_picture

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

Definition: mpegvideo_enc.c:1937

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t mx

Definition: dsp.h:57

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:182

RLTable

RLTable.

Definition: rl.h:39

ff_wmv1_encoder

const FFCodec ff_wmv1_encoder

Definition: msmpeg4enc.c:726

val

static double val(void *priv, double ch)

Definition: aeval.c:77

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:359

MSMPEG4EncContext::ac_stats

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

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

Definition: msmpeg4enc.h:41

ff_msmp4_mv_table1_lens

const uint8_t ff_msmp4_mv_table1_lens[MSMPEG4_MV_TABLES_NB_ELEMS]

Definition: msmpeg4data.c:928

NB_RL_TABLES

#define NB_RL_TABLES

Definition: msmpeg4data.h:40

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:106

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

msmpeg4v2_encode_motion

static void msmpeg4v2_encode_motion(MPVEncContext *const s, int val)

Definition: msmpeg4enc.c:345

get_rl_index

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

Definition: rl.h:101

MSMPEG4EncContext::esc3_run_length

int esc3_run_length

Definition: msmpeg4enc.h:38

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:144

bits

uint8_t bits

Definition: vp3data.h:128

av_assert0

#define av_assert0(cond)

assert() equivalent, that is always enabled.

Definition: avassert.h:41

find_best_tables

static void find_best_tables(MSMPEG4EncContext *ms)

Definition: msmpeg4enc.c:151

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

CODEC_LONG_NAME

#define CODEC_LONG_NAME(str)

Definition: codec_internal.h:332

uint8_t ptrdiff_t const uint8_t ptrdiff_t int intptr_t intptr_t my

Definition: dsp.h:57

MSMPEG4EncContext::per_mb_rl_table

int per_mb_rl_table

Definition: msmpeg4enc.h:37

ff_msmp4_mv_table0_lens

const uint8_t ff_msmp4_mv_table0_lens[MSMPEG4_MV_TABLES_NB_ELEMS]

Definition: msmpeg4data.c:674

AV_ONCE_INIT

#define AV_ONCE_INIT

Definition: thread.h:203

run

uint8_t run

Definition: svq3.c:207

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

MSMPEG4EncContext::dc_table_index

int dc_table_index

Definition: msmpeg4enc.h:35

ff_v2_mb_type

const uint8_t ff_v2_mb_type[8][2]

Definition: msmpeg4data.c:993

init_mv_table

static av_cold void init_mv_table(const uint16_t mv_table[], const uint8_t mv_table_lens[], uint32_t mv_vector_table[4096], unsigned escape_code, int escape_length)

Definition: msmpeg4enc.c:58

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:278

msmpeg4_encode_picture_header

static int msmpeg4_encode_picture_header(MPVMainEncContext *const m)

Definition: msmpeg4enc.c:217

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:1117

DC_MAX

#define DC_MAX

Definition: msmpeg4.h:32

AV_CODEC_ID_WMV1

@ AV_CODEC_ID_WMV1

Definition: codec_id.h:69

MPVMainEncContext

Definition: mpegvideoenc.h:198

ff_msmpeg4v2_encoder

const FFCodec ff_msmpeg4v2_encoder

Definition: msmpeg4enc.c:694

AVOnce

#define AVOnce

Definition: thread.h:202

ff_msmp4_mv_table0

const uint16_t ff_msmp4_mv_table0[MSMPEG4_MV_TABLES_NB_ELEMS]

The entries are of the form (8 << mvx) | mvy. Escape value is zero.

Definition: msmpeg4data.c:487

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:550

AV_CODEC_CAP_DR1

#define AV_CODEC_CAP_DR1

Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.

Definition: codec.h:52

ff_mpeg4_clean_buffers

void ff_mpeg4_clean_buffers(MpegEncContext *s)

Definition: mpeg4video.c:44

codec_internal.h

put_bits_assume_flushed

static void put_bits_assume_flushed(const PutBitContext *s)

Inform the compiler that a PutBitContext is flushed (i.e.

Definition: put_bits.h:82

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

rl_length

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

Definition: msmpeg4enc.c:51

II_BITRATE

#define II_BITRATE

Definition: msmpeg4.h:29

range

enum AVColorRange range

Definition: mediacodec_wrapper.c:2594

ff_msmp4_mv_table1

const uint16_t ff_msmp4_mv_table1[MSMPEG4_MV_TABLES_NB_ELEMS]

Definition: msmpeg4data.c:741

ff_msmpeg4_pred_dc

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

Definition: msmpeg4.c:197

ff_v2_intra_cbpc

const uint8_t ff_v2_intra_cbpc[4][2]

Definition: msmpeg4data.c:998

attributes.h

ff_msmpeg4_encode_motion

void ff_msmpeg4_encode_motion(MSMPEG4EncContext *const ms, int mx, int my)

Definition: msmpeg4enc.c:306

mpv_to_msmpeg4

static MSMP4DecContext * mpv_to_msmpeg4(H263DecContext *const h)

Definition: msmpeg4dec.h:46

get_bits_diff

static int get_bits_diff(MPVEncContext *s)

Definition: mpegvideoenc.h:407

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

Definition: cbs_h2645.c:256

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:90

RLTable::max_run

int8_t * max_run[2]

encoding & decoding

Definition: rl.h:47

FFMIN

#define FFMIN(a, b)

Definition: macros.h:49

AVCodec::name