FFmpeg: libavcodec/vaapi_encode_mpeg2.c Source File

FFmpeg

[フレーム]

libavcodec

vaapi_encode_mpeg2.c

Go to the documentation of this file.

1 /*

2 * This file is part of FFmpeg.

3 *

4 * FFmpeg is free software; you can redistribute it and/or

5 * modify it under the terms of the GNU Lesser General Public

6 * License as published by the Free Software Foundation; either

7 * version 2.1 of the License, or (at your option) any later version.

8 *

9 * FFmpeg is distributed in the hope that it will be useful,

10 * but WITHOUT ANY WARRANTY; without even the implied warranty of

11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

12 * Lesser General Public License for more details.

13 *

14 * You should have received a copy of the GNU Lesser General Public

15 * License along with FFmpeg; if not, write to the Free Software

16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

17 */

19 #include <va/va.h>

20 #include <va/va_enc_mpeg2.h>

22 #include "libavutil/avassert.h"

24 #include "avcodec.h"

25 #include "cbs.h"

26 #include "cbs_mpeg2.h"

27 #include "mpeg12.h"

28 #include "vaapi_encode.h"

30 typedef struct VAAPIEncodeMPEG2Context {

31 int mb_width;

32 int mb_height;

34 int quant_i;

35 int quant_p;

36 int quant_b;

38 MPEG2RawSequenceHeader sequence_header;

39 MPEG2RawExtensionData sequence_extension;

40 MPEG2RawExtensionData sequence_display_extension;

41 MPEG2RawGroupOfPicturesHeader gop_header;

42 MPEG2RawPictureHeader picture_header;

43 MPEG2RawExtensionData picture_coding_extension;

45 int64_t last_i_frame;

47 unsigned int bit_rate;

48 unsigned int vbv_buffer_size;

50 AVRational frame_rate;

52 unsigned int f_code_horizontal;

53 unsigned int f_code_vertical;

55 CodedBitstreamContext *cbc;

56 CodedBitstreamFragment current_fragment;

57 } VAAPIEncodeMPEG2Context;

60 static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx,

61 char *data, size_t *data_len,

62 CodedBitstreamFragment *frag)

63 {

64 VAAPIEncodeContext *ctx = avctx->priv_data;

65 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

66 int err;

68 err = ff_cbs_write_fragment_data(priv->cbc, frag);

69 if (err < 0) {

70 av_log(avctx, AV_LOG_ERROR, "Failed to write packed header.\n");

71 return err;

72 }

74 if (*data_len < 8 * frag->data_size - frag->data_bit_padding) {

75 av_log(avctx, AV_LOG_ERROR, "Access unit too large: "

76 "%zu < %zu.\n", *data_len,

77 8 * frag->data_size - frag->data_bit_padding);

78 return AVERROR(ENOSPC);

79 }

81 memcpy(data, frag->data, frag->data_size);

82 *data_len = 8 * frag->data_size - frag->data_bit_padding;

84 return 0;

85 }

87 static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx,

88 CodedBitstreamFragment *frag,

89 int type, void *header)

90 {

91 VAAPIEncodeContext *ctx = avctx->priv_data;

92 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

93 int err;

95 err = ff_cbs_insert_unit_content(priv->cbc, frag, -1, type, header, NULL);

96 if (err < 0) {

97 av_log(avctx, AV_LOG_ERROR, "Failed to add header: "

98 "type = %d.\n", type);

99 return err;

100 }

101

102 return 0;

103 }

104

105 static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx,

106 char *data, size_t *data_len)

107 {

108 VAAPIEncodeContext *ctx = avctx->priv_data;

109 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

110 CodedBitstreamFragment *frag = &priv->current_fragment;

111 int err;

112

113 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_SEQUENCE_HEADER,

114 &priv->sequence_header);

115 if (err < 0)

116 goto fail;

117

118 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,

119 &priv->sequence_extension);

120 if (err < 0)

121 goto fail;

122

123 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,

124 &priv->sequence_display_extension);

125 if (err < 0)

126 goto fail;

127

128 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_GROUP,

129 &priv->gop_header);

130 if (err < 0)

131 goto fail;

132

133 err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);

134 fail:

135 ff_cbs_fragment_uninit(priv->cbc, frag);

136 return 0;

137 }

138

139 static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx,

140 VAAPIEncodePicture *pic,

141 char *data, size_t *data_len)

142 {

143 VAAPIEncodeContext *ctx = avctx->priv_data;

144 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

145 CodedBitstreamFragment *frag = &priv->current_fragment;

146 int err;

147

148 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_PICTURE,

149 &priv->picture_header);

150 if (err < 0)

151 goto fail;

152

153 err = vaapi_encode_mpeg2_add_header(avctx, frag, MPEG2_START_EXTENSION,

154 &priv->picture_coding_extension);

155 if (err < 0)

156 goto fail;

157

158 err = vaapi_encode_mpeg2_write_fragment(avctx, data, data_len, frag);

159 fail:

160 ff_cbs_fragment_uninit(priv->cbc, frag);

161 return 0;

162 }

163

164 static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)

165 {

166 VAAPIEncodeContext *ctx = avctx->priv_data;

167 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

168 MPEG2RawSequenceHeader *sh = &priv->sequence_header;

169 MPEG2RawSequenceExtension *se = &priv->sequence_extension.data.sequence;

170 MPEG2RawSequenceDisplayExtension *sde = &priv->sequence_display_extension.data.sequence_display;

171 MPEG2RawGroupOfPicturesHeader *goph = &priv->gop_header;

172 MPEG2RawPictureHeader *ph = &priv->picture_header;

173 MPEG2RawPictureCodingExtension *pce = &priv->picture_coding_extension.data.picture_coding;

174 VAEncSequenceParameterBufferMPEG2 *vseq = ctx->codec_sequence_params;

175 VAEncPictureParameterBufferMPEG2 *vpic = ctx->codec_picture_params;

176 int code, ext_n, ext_d;

177

178 memset(sh, 0, sizeof(*sh));

179 memset(se, 0, sizeof(*se));

180 memset(sde, 0, sizeof(*sde));

181 memset(goph, 0, sizeof(*goph));

182 memset(ph, 0, sizeof(*ph));

183 memset(pce, 0, sizeof(*pce));

184

185

186 if (avctx->bit_rate > 0) {

187 priv->bit_rate = (avctx->bit_rate + 399) / 400;

188 } else {

189 // Unknown (not a bitrate-targetting mode), so just use the

190 // highest value.

191 priv->bit_rate = 0x3fffffff;

192 }

193 if (avctx->rc_buffer_size > 0) {

194 priv->vbv_buffer_size = (avctx->rc_buffer_size + (1 << 14) - 1) >> 14;

195 } else {

196 // Unknown, so guess a value from the bitrate.

197 priv->vbv_buffer_size = priv->bit_rate >> 14;

198 }

199

200 switch (avctx->level) {

201 case 4: // High.

202 case 6: // High 1440.

203 priv->f_code_horizontal = 9;

204 priv->f_code_vertical = 5;

205 break;

206 case 8: // Main.

207 priv->f_code_horizontal = 8;

208 priv->f_code_vertical = 5;

209 break;

210 case 10: // Low.

211 default:

212 priv->f_code_horizontal = 7;

213 priv->f_code_vertical = 4;

214 break;

215 }

216

217

218 // Sequence header

219

220 sh->sequence_header_code = MPEG2_START_SEQUENCE_HEADER;

221

222 sh->horizontal_size_value = avctx->width & 0xfff;

223 sh->vertical_size_value = avctx->height & 0xfff;

224

225 if (avctx->sample_aspect_ratio.num != 0 &&

226 avctx->sample_aspect_ratio.den != 0) {

227 AVRational dar = av_div_q(avctx->sample_aspect_ratio,

228 (AVRational) { avctx->width, avctx->height });

229

230 if (av_cmp_q(avctx->sample_aspect_ratio, (AVRational) { 1, 1 }) == 0) {

231 sh->aspect_ratio_information = 1;

232 } else if (av_cmp_q(dar, (AVRational) { 3, 4 }) == 0) {

233 sh->aspect_ratio_information = 2;

234 } else if (av_cmp_q(dar, (AVRational) { 9, 16 }) == 0) {

235 sh->aspect_ratio_information = 3;

236 } else if (av_cmp_q(dar, (AVRational) { 100, 221 }) == 0) {

237 sh->aspect_ratio_information = 4;

238 } else {

239 av_log(avctx, AV_LOG_WARNING, "Sample aspect ratio %d:%d is not "

240 "representable, signalling square pixels instead.\n",

241 avctx->sample_aspect_ratio.num,

242 avctx->sample_aspect_ratio.den);

243 sh->aspect_ratio_information = 1;

244 }

245 } else {

246 // Unknown - assume square pixels.

247 sh->aspect_ratio_information = 1;

248 }

249

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

251 priv->frame_rate = avctx->framerate;

252 else

253 priv->frame_rate = av_inv_q(avctx->time_base);

254 ff_mpeg12_find_best_frame_rate(priv->frame_rate,

255 &code, &ext_n, &ext_d, 0);

256 sh->frame_rate_code = code;

257

258 sh->bit_rate_value = priv->bit_rate & 0x3ffff;

259 sh->vbv_buffer_size_value = priv->vbv_buffer_size & 0x3ff;

260

261 sh->constrained_parameters_flag = 0;

262 sh->load_intra_quantiser_matrix = 0;

263 sh->load_non_intra_quantiser_matrix = 0;

264

265

266 // Sequence extension

267

268 priv->sequence_extension.extension_start_code = MPEG2_START_EXTENSION;

269 priv->sequence_extension.extension_start_code_identifier =

270 MPEG2_EXTENSION_SEQUENCE;

271

272 se->profile_and_level_indication = avctx->profile << 4 | avctx->level;

273 se->progressive_sequence = 1;

274 se->chroma_format = 1;

275

276 se->horizontal_size_extension = avctx->width >> 12;

277 se->vertical_size_extension = avctx->height >> 12;

278

279 se->bit_rate_extension = priv->bit_rate >> 18;

280 se->vbv_buffer_size_extension = priv->vbv_buffer_size >> 10;

281 se->low_delay = ctx->b_per_p == 0;

282

283 se->frame_rate_extension_n = ext_n;

284 se->frame_rate_extension_d = ext_d;

285

286

287 // Sequence display extension

288

289 priv->sequence_display_extension.extension_start_code =

290 MPEG2_START_EXTENSION;

291 priv->sequence_display_extension.extension_start_code_identifier =

292 MPEG2_EXTENSION_SEQUENCE_DISPLAY;

293

294 sde->video_format = 5;

295 if (avctx->color_primaries != AVCOL_PRI_UNSPECIFIED ||

296 avctx->color_trc != AVCOL_TRC_UNSPECIFIED ||

297 avctx->colorspace != AVCOL_SPC_UNSPECIFIED) {

298 sde->colour_description = 1;

299 sde->colour_primaries = avctx->color_primaries;

300 sde->transfer_characteristics = avctx->color_trc;

301 sde->matrix_coefficients = avctx->colorspace;

302 } else {

303 sde->colour_description = 0;

304 }

305

306 sde->display_horizontal_size = avctx->width;

307 sde->display_vertical_size = avctx->height;

308

309

310 // GOP header

311

312 goph->group_start_code = MPEG2_START_GROUP;

313

314 goph->time_code = 0;

315 goph->closed_gop = 1;

316 goph->broken_link = 0;

317

318

319 // Defaults for picture header

320

321 ph->picture_start_code = MPEG2_START_PICTURE;

322

323 ph->vbv_delay = 0xffff; // Not currently calculated.

324

325 ph->full_pel_forward_vector = 0;

326 ph->forward_f_code = 7;

327 ph->full_pel_backward_vector = 0;

328 ph->forward_f_code = 7;

329

330

331 // Defaults for picture coding extension

332

333 priv->picture_coding_extension.extension_start_code =

334 MPEG2_START_EXTENSION;

335 priv->picture_coding_extension.extension_start_code_identifier =

336 MPEG2_EXTENSION_PICTURE_CODING;

337

338 pce->intra_dc_precision = 0;

339 pce->picture_structure = 3;

340 pce->top_field_first = 0;

341 pce->frame_pred_frame_dct = 1;

342 pce->concealment_motion_vectors = 0;

343 pce->q_scale_type = 0;

344 pce->intra_vlc_format = 0;

345 pce->alternate_scan = 0;

346 pce->repeat_first_field = 0;

347 pce->progressive_frame = 1;

348 pce->composite_display_flag = 0;

349

350

351

352 *vseq = (VAEncSequenceParameterBufferMPEG2) {

353 .intra_period = avctx->gop_size,

354 .ip_period = ctx->b_per_p + 1,

355

356 .picture_width = avctx->width,

357 .picture_height = avctx->height,

358

359 .bits_per_second = avctx->bit_rate,

360 .frame_rate = av_q2d(priv->frame_rate),

361 .aspect_ratio_information = sh->aspect_ratio_information,

362 .vbv_buffer_size = priv->vbv_buffer_size,

363

364 .sequence_extension.bits = {

365 .profile_and_level_indication = se->profile_and_level_indication,

366 .progressive_sequence = se->progressive_sequence,

367 .chroma_format = se->chroma_format,

368 .low_delay = se->low_delay,

369 .frame_rate_extension_n = se->frame_rate_extension_n,

370 .frame_rate_extension_d = se->frame_rate_extension_d,

371 },

372

373 .new_gop_header = 1,

374 .gop_header.bits = {

375 .time_code = goph->time_code,

376 .closed_gop = goph->closed_gop,

377 .broken_link = goph->broken_link,

378 },

379 };

380

381 *vpic = (VAEncPictureParameterBufferMPEG2) {

382 .forward_reference_picture = VA_INVALID_ID,

383 .backward_reference_picture = VA_INVALID_ID,

384 .reconstructed_picture = VA_INVALID_ID,

385 .coded_buf = VA_INVALID_ID,

386

387 .vbv_delay = 0xffff,

388 .f_code = { { 15, 15 }, { 15, 15 } },

389

390 .picture_coding_extension.bits = {

391 .intra_dc_precision = pce->intra_dc_precision,

392 .picture_structure = pce->picture_structure,

393 .top_field_first = pce->top_field_first,

394 .frame_pred_frame_dct = pce->frame_pred_frame_dct,

395 .concealment_motion_vectors = pce->concealment_motion_vectors,

396 .q_scale_type = pce->q_scale_type,

397 .intra_vlc_format = pce->intra_vlc_format,

398 .alternate_scan = pce->alternate_scan,

399 .repeat_first_field = pce->repeat_first_field,

400 .progressive_frame = pce->progressive_frame,

401 .composite_display_flag = pce->composite_display_flag,

402 },

403

404 .composite_display.bits = {

405 .v_axis = pce->v_axis,

406 .field_sequence = pce->field_sequence,

407 .sub_carrier = pce->sub_carrier,

408 .burst_amplitude = pce->burst_amplitude,

409 .sub_carrier_phase = pce->sub_carrier_phase,

410 },

411 };

412

413 return 0;

414 }

415

416 static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx,

417 VAAPIEncodePicture *pic)

418 {

419 VAAPIEncodeContext *ctx = avctx->priv_data;

420 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

421 MPEG2RawPictureHeader *ph = &priv->picture_header;

422 MPEG2RawPictureCodingExtension *pce = &priv->picture_coding_extension.data.picture_coding;

423 VAEncPictureParameterBufferMPEG2 *vpic = pic->codec_picture_params;

424

425 if (pic->type == PICTURE_TYPE_IDR || pic->type == PICTURE_TYPE_I) {

426 ph->temporal_reference = 0;

427 ph->picture_coding_type = 1;

428 priv->last_i_frame = pic->display_order;

429 } else {

430 ph->temporal_reference = pic->display_order - priv->last_i_frame;

431 ph->picture_coding_type = pic->type == PICTURE_TYPE_B ? 3 : 2;

432 }

433

434 if (pic->type == PICTURE_TYPE_P || pic->type == PICTURE_TYPE_B) {

435 pce->f_code[0][0] = priv->f_code_horizontal;

436 pce->f_code[0][1] = priv->f_code_vertical;

437 } else {

438 pce->f_code[0][0] = 15;

439 pce->f_code[0][1] = 15;

440 }

441 if (pic->type == PICTURE_TYPE_B) {

442 pce->f_code[1][0] = priv->f_code_horizontal;

443 pce->f_code[1][1] = priv->f_code_vertical;

444 } else {

445 pce->f_code[1][0] = 15;

446 pce->f_code[1][1] = 15;

447 }

448

449 vpic->reconstructed_picture = pic->recon_surface;

450 vpic->coded_buf = pic->output_buffer;

451

452 switch (pic->type) {

453 case PICTURE_TYPE_IDR:

454 case PICTURE_TYPE_I:

455 vpic->picture_type = VAEncPictureTypeIntra;

456 break;

457 case PICTURE_TYPE_P:

458 vpic->picture_type = VAEncPictureTypePredictive;

459 vpic->forward_reference_picture = pic->refs[0]->recon_surface;

460 break;

461 case PICTURE_TYPE_B:

462 vpic->picture_type = VAEncPictureTypeBidirectional;

463 vpic->forward_reference_picture = pic->refs[0]->recon_surface;

464 vpic->backward_reference_picture = pic->refs[1]->recon_surface;

465 break;

466 default:

467 av_assert0(0 && "invalid picture type");

468 }

469

470 vpic->temporal_reference = ph->temporal_reference;

471 vpic->f_code[0][0] = pce->f_code[0][0];

472 vpic->f_code[0][1] = pce->f_code[0][1];

473 vpic->f_code[1][0] = pce->f_code[1][0];

474 vpic->f_code[1][1] = pce->f_code[1][1];

475

476 pic->nb_slices = priv->mb_height;

477

478 return 0;

479 }

480

481 static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx,

482 VAAPIEncodePicture *pic,

483 VAAPIEncodeSlice *slice)

484 {

485 VAAPIEncodeContext *ctx = avctx->priv_data;

486 VAEncSliceParameterBufferMPEG2 *vslice = slice->codec_slice_params;

487 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

488 int qp;

489

490 vslice->macroblock_address = priv->mb_width * slice->index;

491 vslice->num_macroblocks = priv->mb_width;

492

493 switch (pic->type) {

494 case PICTURE_TYPE_IDR:

495 case PICTURE_TYPE_I:

496 qp = priv->quant_i;

497 break;

498 case PICTURE_TYPE_P:

499 qp = priv->quant_p;

500 break;

501 case PICTURE_TYPE_B:

502 qp = priv->quant_b;

503 break;

504 default:

505 av_assert0(0 && "invalid picture type");

506 }

507

508 vslice->quantiser_scale_code = qp;

509 vslice->is_intra_slice = (pic->type == PICTURE_TYPE_IDR ||

510 pic->type == PICTURE_TYPE_I);

511

512 return 0;

513 }

514

515 static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)

516 {

517 VAAPIEncodeContext *ctx = avctx->priv_data;

518 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

519 int err;

520

521 err = ff_cbs_init(&priv->cbc, AV_CODEC_ID_MPEG2VIDEO, avctx);

522 if (err < 0)

523 return err;

524

525 priv->mb_width = FFALIGN(avctx->width, 16) / 16;

526 priv->mb_height = FFALIGN(avctx->height, 16) / 16;

527

528 if (ctx->va_rc_mode == VA_RC_CQP) {

529 priv->quant_p = av_clip(avctx->global_quality, 1, 31);

530 if (avctx->i_quant_factor > 0.0)

531 priv->quant_i = av_clip((avctx->global_quality *

532 avctx->i_quant_factor +

533 avctx->i_quant_offset) + 0.5,

534 1, 31);

535 else

536 priv->quant_i = priv->quant_p;

537 if (avctx->b_quant_factor > 0.0)

538 priv->quant_b = av_clip((avctx->global_quality *

539 avctx->b_quant_factor +

540 avctx->b_quant_offset) + 0.5,

541 1, 31);

542 else

543 priv->quant_b = priv->quant_p;

544

545 av_log(avctx, AV_LOG_DEBUG, "Using fixed quantiser "

546 "%d / %d / %d for I- / P- / B-frames.\n",

547 priv->quant_i, priv->quant_p, priv->quant_b);

548

549 } else {

550 av_assert0(0 && "Invalid RC mode.");

551 }

552

553 return 0;

554 }

555

556 static const VAAPIEncodeType vaapi_encode_type_mpeg2 = {

557 .priv_data_size = sizeof(VAAPIEncodeMPEG2Context),

558

559 .configure = &vaapi_encode_mpeg2_configure,

560

561 .sequence_params_size = sizeof(VAEncSequenceParameterBufferMPEG2),

562 .init_sequence_params = &vaapi_encode_mpeg2_init_sequence_params,

563

564 .picture_params_size = sizeof(VAEncPictureParameterBufferMPEG2),

565 .init_picture_params = &vaapi_encode_mpeg2_init_picture_params,

566

567 .slice_params_size = sizeof(VAEncSliceParameterBufferMPEG2),

568 .init_slice_params = &vaapi_encode_mpeg2_init_slice_params,

569

570 .sequence_header_type = VAEncPackedHeaderSequence,

571 .write_sequence_header = &vaapi_encode_mpeg2_write_sequence_header,

572

573 .picture_header_type = VAEncPackedHeaderPicture,

574 .write_picture_header = &vaapi_encode_mpeg2_write_picture_header,

575 };

576

577 static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)

578 {

579 VAAPIEncodeContext *ctx = avctx->priv_data;

580

581 ctx->codec = &vaapi_encode_type_mpeg2;

582

583 switch (avctx->profile) {

584 case FF_PROFILE_MPEG2_SIMPLE:

585 ctx->va_profile = VAProfileMPEG2Simple;

586 break;

587 case FF_PROFILE_MPEG2_MAIN:

588 ctx->va_profile = VAProfileMPEG2Main;

589 break;

590 case FF_PROFILE_MPEG2_422:

591 av_log(avctx, AV_LOG_ERROR, "MPEG-2 4:2:2 profile "

592 "is not supported.\n");

593 return AVERROR_PATCHWELCOME;

594 case FF_PROFILE_MPEG2_HIGH:

595 av_log(avctx, AV_LOG_ERROR, "MPEG-2 high profile "

596 "is not supported.\n");

597 return AVERROR_PATCHWELCOME;

598 case FF_PROFILE_MPEG2_SS:

599 case FF_PROFILE_MPEG2_SNR_SCALABLE:

600 av_log(avctx, AV_LOG_ERROR, "MPEG-2 scalable profiles "

601 "are not supported.\n");

602 return AVERROR_PATCHWELCOME;

603 default:

604 av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 profile %d.\n",

605 avctx->profile);

606 return AVERROR(EINVAL);

607 }

608 switch (avctx->level) {

609 case 4: // High

610 case 6: // High 1440

611 case 8: // Main

612 case 10: // Low

613 break;

614 default:

615 av_log(avctx, AV_LOG_ERROR, "Unknown MPEG-2 level %d.\n",

616 avctx->level);

617 return AVERROR(EINVAL);

618 }

619

620 if (avctx->height % 4096 == 0 || avctx->width % 4096 == 0) {

621 av_log(avctx, AV_LOG_ERROR, "MPEG-2 does not support picture "

622 "height or width divisible by 4096.\n");

623 return AVERROR(EINVAL);

624 }

625

626 ctx->va_entrypoint = VAEntrypointEncSlice;

627 ctx->va_rt_format = VA_RT_FORMAT_YUV420;

628 ctx->va_rc_mode = VA_RC_CQP;

629

630 ctx->va_packed_headers = VA_ENC_PACKED_HEADER_SEQUENCE |

631 VA_ENC_PACKED_HEADER_PICTURE;

632

633 ctx->surface_width = FFALIGN(avctx->width, 16);

634 ctx->surface_height = FFALIGN(avctx->height, 16);

635

636 return ff_vaapi_encode_init(avctx);

637 }

638

639 static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)

640 {

641 VAAPIEncodeContext *ctx = avctx->priv_data;

642 VAAPIEncodeMPEG2Context *priv = ctx->priv_data;

643

644 if (priv)

645 ff_cbs_close(&priv->cbc);

646

647 return ff_vaapi_encode_close(avctx);

648 }

649

650 static const AVCodecDefault vaapi_encode_mpeg2_defaults[] = {

651 { "profile", "4" },

652 { "level", "4" },

653 { "bf", "1" },

654 { "g", "120" },

655 { "i_qfactor", "1" },

656 { "i_qoffset", "0" },

657 { "b_qfactor", "6/5" },

658 { "b_qoffset", "0" },

659 { "global_quality", "10" },

660 { NULL },

661 };

662

663 AVCodec ff_mpeg2_vaapi_encoder = {

664 .name = "mpeg2_vaapi",

665 .long_name = NULL_IF_CONFIG_SMALL("MPEG-2 (VAAPI)"),

666 .type = AVMEDIA_TYPE_VIDEO,

667 .id = AV_CODEC_ID_MPEG2VIDEO,

668 .priv_data_size = sizeof(VAAPIEncodeContext),

669 .init = &vaapi_encode_mpeg2_init,

670 .encode2 = &ff_vaapi_encode2,

671 .close = &vaapi_encode_mpeg2_close,

672 .capabilities = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_HARDWARE,

673 .defaults = vaapi_encode_mpeg2_defaults,

674 .pix_fmts = (const enum AVPixelFormat[]) {

675 AV_PIX_FMT_VAAPI,

676 AV_PIX_FMT_NONE,

677 },

678 .wrapper_name = "vaapi",

679 };

vaapi_encode_mpeg2_configure

static av_cold int vaapi_encode_mpeg2_configure(AVCodecContext *avctx)

Definition: vaapi_encode_mpeg2.c:515

VAAPIEncodeMPEG2Context::sequence_extension

MPEG2RawExtensionData sequence_extension

Definition: vaapi_encode_mpeg2.c:39

PICTURE_TYPE_IDR

Definition: vaapi_encode.h:43

NULL

#define NULL

Definition: coverity.c:32

VAAPIEncodeContext::va_profile

VAProfile va_profile

Definition: vaapi_encode.h:96

FF_PROFILE_MPEG2_MAIN

#define FF_PROFILE_MPEG2_MAIN

Definition: avcodec.h:2876

av_div_q

AVRational av_div_q(AVRational b, AVRational c)

Divide one rational by another.

Definition: rational.c:88

#define se(name, range_min, range_max)

Definition: cbs_h2645.c:349

AV_PIX_FMT_NONE

Definition: pixfmt.h:61

VAAPIEncodeContext::surface_width

int surface_width

Definition: vaapi_encode.h:110

VAAPIEncodeContext::va_entrypoint

VAEntrypoint va_entrypoint

Definition: vaapi_encode.h:98

data

ptrdiff_t const GLvoid * data

Definition: opengl_enc.c:101

AVCOL_SPC_UNSPECIFIED

Definition: pixfmt.h:476

AV_LOG_WARNING

#define AV_LOG_WARNING

Something somehow does not look correct.

Definition: log.h:182

AVCodecContext::bit_rate

int64_t bit_rate

the average bitrate

Definition: avcodec.h:1568

init

static av_cold int init(AVCodecContext *avctx)

Definition: avrndec.c:35

MPEG2RawExtensionData::sequence

MPEG2RawSequenceExtension sequence

Definition: cbs_mpeg2.h:176

AV_CODEC_CAP_HARDWARE

#define AV_CODEC_CAP_HARDWARE

Codec is backed by a hardware implementation.

Definition: avcodec.h:1056

ff_cbs_init

int ff_cbs_init(CodedBitstreamContext **ctx_ptr, enum AVCodecID codec_id, void *log_ctx)

Create and initialise a new context for the given codec.

Definition: cbs.c:56

AVRational::num

int num

Numerator.

Definition: rational.h:59

VAAPIEncodeType::priv_data_size

size_t priv_data_size

Definition: vaapi_encode.h:218

ff_cbs_insert_unit_content

int ff_cbs_insert_unit_content(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag, int position, CodedBitstreamUnitType type, void *content, AVBufferRef *content_buf)

Insert a new unit into a fragment with the given content.

Definition: cbs.c:518

AVCodecContext::sample_aspect_ratio

AVRational sample_aspect_ratio

sample aspect ratio (0 if unknown) That is the width of a pixel divided by the height of the pixel...

Definition: avcodec.h:1896

AVFormatContext::bit_rate

int64_t bit_rate

Total stream bitrate in bit/s, 0 if not available.

Definition: avformat.h:1464

VAAPIEncodeMPEG2Context::sequence_display_extension

MPEG2RawExtensionData sequence_display_extension

Definition: vaapi_encode_mpeg2.c:40

MPEG2RawExtensionData::data

union MPEG2RawExtensionData::@48 data

VAAPIEncodeMPEG2Context::bit_rate

unsigned int bit_rate

Definition: vaapi_encode_mpeg2.c:47

MPEG2RawGroupOfPicturesHeader

Definition: cbs_mpeg2.h:109

VAAPIEncodeContext::codec_sequence_params

void * codec_sequence_params

Definition: vaapi_encode.h:168

vaapi_encode_mpeg2_init

static av_cold int vaapi_encode_mpeg2_init(AVCodecContext *avctx)

Definition: vaapi_encode_mpeg2.c:577

AVCodecContext::profile

int profile

profile

Definition: avcodec.h:2843

AVCodec

AVCodec.

Definition: avcodec.h:3408

VAAPIEncodeMPEG2Context::vbv_buffer_size

unsigned int vbv_buffer_size

Definition: vaapi_encode_mpeg2.c:48

AVCodecContext::i_quant_offset

float i_quant_offset

qscale offset between P and I-frames

Definition: avcodec.h:1829

AVCOL_TRC_UNSPECIFIED

Definition: pixfmt.h:447

VAAPIEncodeContext::va_packed_headers

unsigned int va_packed_headers

Definition: vaapi_encode.h:105

VAAPIEncodeMPEG2Context::quant_i

int quant_i

Definition: vaapi_encode_mpeg2.c:34

MPEG2_START_SEQUENCE_HEADER

Definition: cbs_mpeg2.h:33

AV_CODEC_CAP_DELAY

#define AV_CODEC_CAP_DELAY

Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...

Definition: avcodec.h:984

av_assert0

#define av_assert0(cond)

assert() equivalent, that is always enabled.

Definition: avassert.h:37

MPEG2RawSequenceHeader::vertical_size_value

uint16_t vertical_size_value

Definition: cbs_mpeg2.h:63

vaapi_encode_mpeg2_write_picture_header

static int vaapi_encode_mpeg2_write_picture_header(AVCodecContext *avctx, VAAPIEncodePicture *pic, char *data, size_t *data_len)

Definition: vaapi_encode_mpeg2.c:139

MPEG2RawPictureCodingExtension::f_code

uint8_t f_code[2][2]

Definition: cbs_mpeg2.h:133

cbs.h

VAAPIEncodePicture::type

int type

Definition: vaapi_encode.h:62

av_cold

#define av_cold

Definition: attributes.h:82

VAAPIEncodeSlice::index

int index

Definition: vaapi_encode.h:50

VAAPIEncodeMPEG2Context::frame_rate

AVRational frame_rate

Definition: vaapi_encode_mpeg2.c:50

vaapi_encode_mpeg2_add_header

static int vaapi_encode_mpeg2_add_header(AVCodecContext *avctx, CodedBitstreamFragment *frag, int type, void *header)

Definition: vaapi_encode_mpeg2.c:87

AVCodecContext::b_quant_factor

float b_quant_factor

qscale factor between IP and B-frames If > 0 then the last P-frame quantizer will be used (q= lastp_q...

Definition: avcodec.h:1786

PICTURE_TYPE_B

Definition: vaapi_encode.h:46

MPEG2RawSequenceDisplayExtension

Definition: cbs_mpeg2.h:97

av_q2d

static double av_q2d(AVRational a)

Convert an AVRational to a double.

Definition: rational.h:104

VAAPIEncodePicture::recon_surface

VASurfaceID recon_surface

Definition: vaapi_encode.h:71

header

static const uint8_t header[24]

Definition: sdr2.c:67

VAAPIEncodeMPEG2Context::sequence_header

MPEG2RawSequenceHeader sequence_header

Definition: vaapi_encode_mpeg2.c:38

vaapi_encode_mpeg2_write_fragment

static int vaapi_encode_mpeg2_write_fragment(AVCodecContext *avctx, char *data, size_t *data_len, CodedBitstreamFragment *frag)

Definition: vaapi_encode_mpeg2.c:60

FFALIGN

#define FFALIGN(x, a)

Definition: macros.h:48

av_log

#define av_log(a,...)

Definition: tableprint_vlc.h:28

MPEG2RawExtensionData::picture_coding

MPEG2RawPictureCodingExtension picture_coding

Definition: cbs_mpeg2.h:179

CodedBitstreamFragment::data_size

size_t data_size

The number of bytes in the bitstream.

Definition: cbs.h:127

VAAPIEncodeMPEG2Context

Definition: vaapi_encode_mpeg2.c:30

VAAPIEncodeContext::va_rc_mode

unsigned int va_rc_mode

Definition: vaapi_encode.h:102

ff_mpeg2_vaapi_encoder

AVCodec ff_mpeg2_vaapi_encoder

Definition: vaapi_encode_mpeg2.c:663

PICTURE_TYPE_P

Definition: vaapi_encode.h:45

AV_LOG_ERROR

#define AV_LOG_ERROR

Something went wrong and cannot losslessly be recovered.

Definition: log.h:176

ff_cbs_fragment_uninit

void ff_cbs_fragment_uninit(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)

Free all allocated memory in a fragment.

Definition: cbs.c:121

AVERROR

#define AVERROR(e)

Definition: error.h:43

vaapi_encode_mpeg2_init_picture_params

static int vaapi_encode_mpeg2_init_picture_params(AVCodecContext *avctx, VAAPIEncodePicture *pic)

Definition: vaapi_encode_mpeg2.c:416

AVCodecDefault

Definition: internal.h:223

NULL_IF_CONFIG_SMALL

#define NULL_IF_CONFIG_SMALL(x)

Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...

Definition: internal.h:186

VAAPIEncodeMPEG2Context::mb_width

int mb_width

Definition: vaapi_encode_mpeg2.c:31

AV_PIX_FMT_VAAPI

Definition: pixfmt.h:118

AV_LOG_DEBUG

#define AV_LOG_DEBUG

Stuff which is only useful for libav* developers.

Definition: log.h:197

VAAPIEncodeType

Definition: vaapi_encode.h:217

vaapi_encode_mpeg2_defaults

static const AVCodecDefault vaapi_encode_mpeg2_defaults[]

Definition: vaapi_encode_mpeg2.c:650

VAAPIEncodeMPEG2Context::picture_header

MPEG2RawPictureHeader picture_header

Definition: vaapi_encode_mpeg2.c:42

avassert.h

simple assert() macros that are a bit more flexible than ISO C assert().

AVCodec::name

const char * name

Name of the codec implementation.

Definition: avcodec.h:3415

AVCodecContext::i_quant_factor

float i_quant_factor

qscale factor between P- and I-frames If > 0 then the last P-frame quantizer will be used (q = lastp_...

Definition: avcodec.h:1822

defaults

static const AVCodecDefault defaults[]

Definition: amfenc_h264.c:361

ff_mpeg12_find_best_frame_rate

void ff_mpeg12_find_best_frame_rate(AVRational frame_rate, int *code, int *ext_n, int *ext_d, int nonstandard)

Definition: mpeg12framerate.c:44

VAAPIEncodePicture::codec_picture_params

void * codec_picture_params

Definition: vaapi_encode.h:80

CodedBitstreamFragment::data_bit_padding

size_t data_bit_padding

The number of bits which should be ignored in the final byte.

Definition: cbs.h:131

fail

#define fail()

Definition: checkasm.h:116

FF_PROFILE_MPEG2_SNR_SCALABLE

#define FF_PROFILE_MPEG2_SNR_SCALABLE

Definition: avcodec.h:2875

AVCodecContext::rc_buffer_size

int rc_buffer_size

decoder bitstream buffer size

Definition: avcodec.h:2376

VAAPIEncodeMPEG2Context::cbc

CodedBitstreamContext * cbc

Definition: vaapi_encode_mpeg2.c:55

MPEG2_EXTENSION_SEQUENCE

Definition: cbs_mpeg2.h:45

FF_PROFILE_MPEG2_HIGH

#define FF_PROFILE_MPEG2_HIGH

Definition: avcodec.h:2873

VAAPIEncodeMPEG2Context::quant_b

int quant_b

Definition: vaapi_encode_mpeg2.c:36

vaapi_encode_mpeg2_close

static av_cold int vaapi_encode_mpeg2_close(AVCodecContext *avctx)

Definition: vaapi_encode_mpeg2.c:639

MPEG2_EXTENSION_PICTURE_CODING

Definition: cbs_mpeg2.h:51

vaapi_encode_mpeg2_init_sequence_params

static int vaapi_encode_mpeg2_init_sequence_params(AVCodecContext *avctx)

Definition: vaapi_encode_mpeg2.c:164

VAAPIEncodeMPEG2Context::quant_p

int quant_p

Definition: vaapi_encode_mpeg2.c:35

AVCodecContext::width

int width

picture width / height.

Definition: avcodec.h:1690

VAAPIEncodeMPEG2Context::f_code_vertical

unsigned int f_code_vertical

Definition: vaapi_encode_mpeg2.c:53

ff_vaapi_encode_init

av_cold int ff_vaapi_encode_init(AVCodecContext *avctx)

Definition: vaapi_encode.c:1362

MPEG2_START_EXTENSION

Definition: cbs_mpeg2.h:35

ctx

AVFormatContext * ctx

Definition: movenc.c:48

FF_PROFILE_MPEG2_422

#define FF_PROFILE_MPEG2_422

Definition: avcodec.h:2872

VAAPIEncodeContext::va_rt_format

unsigned int va_rt_format

Definition: vaapi_encode.h:100

AVCodecContext::level

int level

level

Definition: avcodec.h:2953

VAAPIEncodeContext::codec_picture_params

void * codec_picture_params

Definition: vaapi_encode.h:172

AVCodecContext::height

int height

Definition: avcodec.h:1690

AV_CODEC_ID_MPEG2VIDEO

preferred ID for MPEG-1/2 video decoding

Definition: avcodec.h:220

CodedBitstreamFragment::data

uint8_t * data

Pointer to the bitstream form of this fragment.

Definition: cbs.h:120

ff_cbs_write_fragment_data

int ff_cbs_write_fragment_data(CodedBitstreamContext *ctx, CodedBitstreamFragment *frag)

Write the content of the fragment to its own internal buffer.

Definition: cbs.c:261

AVERROR_PATCHWELCOME

#define AVERROR_PATCHWELCOME

Not yet implemented in FFmpeg, patches welcome.

Definition: error.h:62

VAAPIEncodePicture::refs

struct VAAPIEncodePicture * refs[MAX_PICTURE_REFERENCES]

Definition: vaapi_encode.h:83

vaapi_encode_mpeg2_init_slice_params

static int vaapi_encode_mpeg2_init_slice_params(AVCodecContext *avctx, VAAPIEncodePicture *pic, VAAPIEncodeSlice *slice)

Definition: vaapi_encode_mpeg2.c:481

VAAPIEncodeContext::codec

const struct VAAPIEncodeType * codec

Definition: vaapi_encode.h:93

avcodec.h

Libavcodec external API header.

MPEG2RawExtensionData::sequence_display

MPEG2RawSequenceDisplayExtension sequence_display

Definition: cbs_mpeg2.h:177

CodedBitstreamFragment

Coded bitstream fragment structure, combining one or more units.

Definition: cbs.h:114

AVCodecContext

main external API structure.

Definition: avcodec.h:1518

vaapi_encode.h

MPEG2RawSequenceHeader::sequence_header_code

uint8_t sequence_header_code

Definition: cbs_mpeg2.h:60

type

GLint GLenum type

Definition: opengl_enc.c:105

VAAPIEncodeMPEG2Context::current_fragment

CodedBitstreamFragment current_fragment

Definition: vaapi_encode_mpeg2.c:56

CodedBitstreamContext

Context structure for coded bitstream operations.

Definition: cbs.h:156

VAAPIEncodePicture

Definition: vaapi_encode.h:55

AVRational

Rational number (pair of numerator and denominator).

Definition: rational.h:58

VAAPIEncodeMPEG2Context::picture_coding_extension

MPEG2RawExtensionData picture_coding_extension

Definition: vaapi_encode_mpeg2.c:43

vaapi_encode_type_mpeg2

static const VAAPIEncodeType vaapi_encode_type_mpeg2

Definition: vaapi_encode_mpeg2.c:556

MPEG2RawSequenceHeader::horizontal_size_value

uint16_t horizontal_size_value

Definition: cbs_mpeg2.h:62

VAAPIEncodeSlice

Definition: vaapi_encode.h:49

VAAPIEncodeContext::surface_height

int surface_height

Definition: vaapi_encode.h:111

ff_cbs_close

void ff_cbs_close(CodedBitstreamContext **ctx_ptr)

Close a context and free all internal state.

Definition: cbs.c:95

MPEG2RawPictureHeader::temporal_reference

uint16_t temporal_reference

Definition: cbs_mpeg2.h:120

AVCodecContext::b_quant_offset

float b_quant_offset

qscale offset between IP and B-frames

Definition: avcodec.h:1799

VAAPIEncodeContext::priv_data

void * priv_data

Definition: vaapi_encode.h:117

VAAPIEncodeMPEG2Context::f_code_horizontal

unsigned int f_code_horizontal

Definition: vaapi_encode_mpeg2.c:52

FF_PROFILE_MPEG2_SS

#define FF_PROFILE_MPEG2_SS

Definition: avcodec.h:2874

pix_fmts

static enum AVPixelFormat pix_fmts[]

Definition: libkvazaar.c:266

MPEG2RawPictureHeader::picture_coding_type

uint8_t picture_coding_type

Definition: cbs_mpeg2.h:121

AVCodecContext::global_quality

int global_quality

Global quality for codecs which cannot change it per frame.

Definition: avcodec.h:1584

MPEG2RawPictureCodingExtension

Definition: cbs_mpeg2.h:132

MPEG2RawExtensionData

Definition: cbs_mpeg2.h:171

av_inv_q

static av_always_inline AVRational av_inv_q(AVRational q)

Invert a rational.

Definition: rational.h:159

av_cmp_q

static int av_cmp_q(AVRational a, AVRational b)

Compare two rationals.

Definition: rational.h:89

VAAPIEncodeContext

Definition: vaapi_encode.h:89

VAAPIEncodeMPEG2Context::last_i_frame

int64_t last_i_frame

Definition: vaapi_encode_mpeg2.c:45

PICTURE_TYPE_I

Definition: vaapi_encode.h:44

ff_vaapi_encode2

int ff_vaapi_encode2(AVCodecContext *avctx, AVPacket *pkt, const AVFrame *input_image, int *got_packet)

Definition: vaapi_encode.c:853

AVRational::den

int den

Denominator.

Definition: rational.h:60

AVCOL_PRI_UNSPECIFIED

Definition: pixfmt.h:423

MPEG2RawPictureHeader

Definition: cbs_mpeg2.h:117

AVCodecContext::priv_data

void * priv_data

Definition: avcodec.h:1545

FF_PROFILE_MPEG2_SIMPLE

#define FF_PROFILE_MPEG2_SIMPLE

Definition: avcodec.h:2877

VAAPIEncodeSlice::codec_slice_params

void * codec_slice_params

Definition: vaapi_encode.h:52

MPEG2RawSequenceHeader

Definition: cbs_mpeg2.h:59

VAAPIEncodeMPEG2Context::gop_header

MPEG2RawGroupOfPicturesHeader gop_header

Definition: vaapi_encode_mpeg2.c:41

MPEG2RawSequenceExtension

Definition: cbs_mpeg2.h:84

MPEG2_START_GROUP

Definition: cbs_mpeg2.h:37

MPEG2_EXTENSION_SEQUENCE_DISPLAY

Definition: cbs_mpeg2.h:46

VAAPIEncodePicture::nb_slices

int nb_slices

Definition: vaapi_encode.h:85

mpeg12.h

AVMEDIA_TYPE_VIDEO

Definition: avutil.h:201

vaapi_encode_mpeg2_write_sequence_header

static int vaapi_encode_mpeg2_write_sequence_header(AVCodecContext *avctx, char *data, size_t *data_len)

Definition: vaapi_encode_mpeg2.c:105

MPEG2_START_PICTURE

Definition: cbs_mpeg2.h:29

cbs_mpeg2.h

VAAPIEncodePicture::output_buffer

VABufferID output_buffer

Definition: vaapi_encode.h:77

AVPixelFormat

Pixel format.

Definition: pixfmt.h:60

VAAPIEncodePicture::display_order

int64_t display_order

Definition: vaapi_encode.h:58

ff_vaapi_encode_close

av_cold int ff_vaapi_encode_close(AVCodecContext *avctx)

Definition: vaapi_encode.c:1557

VAAPIEncodeMPEG2Context::mb_height

int mb_height

Definition: vaapi_encode_mpeg2.c:32

Generated on Sun May 13 2018 02:03:56 for FFmpeg by doxygen 1.8.6