FFmpeg: libavcodec/dnxhdenc.c Source File

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libavcodec

dnxhdenc.c

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1 /*

2 * VC3/DNxHD encoder

5 *

6 * VC-3 encoder funded by the British Broadcasting Corporation

7 * 10 bit support added by MirriAd Ltd, Joseph Artsimovich <joseph@mirriad.com>

8 *

9 * This file is part of FFmpeg.

10 *

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

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

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

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

15 *

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

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

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

19 * Lesser General Public License for more details.

20 *

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

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

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

24 */

26 #include "libavutil/attributes.h"

27 #include "libavutil/internal.h"

28 #include "libavutil/opt.h"

29 #include "libavutil/timer.h"

31 #include "avcodec.h"

32 #include "blockdsp.h"

33 #include "fdctdsp.h"

34 #include "internal.h"

35 #include "mpegvideo.h"

36 #include "pixblockdsp.h"

37 #include "dnxhdenc.h"

40 // The largest value that will not lead to overflow for 10bit samples.

41 #define DNX10BIT_QMAT_SHIFT 18

42 #define RC_VARIANCE 1 // use variance or ssd for fast rc

43 #define LAMBDA_FRAC_BITS 10

45 #define VE AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_ENCODING_PARAM

46 static const AVOption options[] = {

47 { "nitris_compat", "encode with Avid Nitris compatibility",

48 offsetof(DNXHDEncContext, nitris_compat), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, VE },

49 { NULL }

50 };

52 static const AVClass dnxhd_class = {

53 .class_name = "dnxhd",

54 .item_name = av_default_item_name,

55 .option = options,

56 .version = LIBAVUTIL_VERSION_INT,

57 };

59 static void dnxhd_8bit_get_pixels_8x4_sym(int16_t *av_restrict block,

60 const uint8_t *pixels,

61 ptrdiff_t line_size)

62 {

63 int i;

64 for (i = 0; i < 4; i++) {

65 block[0] = pixels[0];

66 block[1] = pixels[1];

67 block[2] = pixels[2];

68 block[3] = pixels[3];

69 block[4] = pixels[4];

70 block[5] = pixels[5];

71 block[6] = pixels[6];

72 block[7] = pixels[7];

73 pixels += line_size;

74 block += 8;

75 }

76 memcpy(block, block - 8, sizeof(*block) * 8);

77 memcpy(block + 8, block - 16, sizeof(*block) * 8);

78 memcpy(block + 16, block - 24, sizeof(*block) * 8);

79 memcpy(block + 24, block - 32, sizeof(*block) * 8);

80 }

82 static av_always_inline

83 void dnxhd_10bit_get_pixels_8x4_sym(int16_t *av_restrict block,

84 const uint8_t *pixels,

85 ptrdiff_t line_size)

86 {

87 int i;

88 const uint16_t* pixels16 = (const uint16_t*)pixels;

89 line_size >>= 1;

91 for (i = 0; i < 4; i++) {

92 block[0] = pixels16[0]; block[1] = pixels16[1];

93 block[2] = pixels16[2]; block[3] = pixels16[3];

94 block[4] = pixels16[4]; block[5] = pixels16[5];

95 block[6] = pixels16[6]; block[7] = pixels16[7];

96 pixels16 += line_size;

97 block += 8;

98 }

99 memcpy(block, block - 8, sizeof(*block) * 8);

100 memcpy(block + 8, block - 16, sizeof(*block) * 8);

101 memcpy(block + 16, block - 24, sizeof(*block) * 8);

102 memcpy(block + 24, block - 32, sizeof(*block) * 8);

103 }

104

105 static int dnxhd_10bit_dct_quantize(MpegEncContext *ctx, int16_t *block,

106 int n, int qscale, int *overflow)

107 {

108 const uint8_t *scantable= ctx->intra_scantable.scantable;

109 const int *qmat = n<4 ? ctx->q_intra_matrix[qscale] : ctx->q_chroma_intra_matrix[qscale];

110 int last_non_zero = 0;

111 int i;

112

113 ctx->fdsp.fdct(block);

114

115 // Divide by 4 with rounding, to compensate scaling of DCT coefficients

116 block[0] = (block[0] + 2) >> 2;

117

118 for (i = 1; i < 64; ++i) {

119 int j = scantable[i];

120 int sign = FF_SIGNBIT(block[j]);

121 int level = (block[j] ^ sign) - sign;

122 level = level * qmat[j] >> DNX10BIT_QMAT_SHIFT;

123 block[j] = (level ^ sign) - sign;

124 if (level)

125 last_non_zero = i;

126 }

127

128 return last_non_zero;

129 }

130

131 static av_cold int dnxhd_init_vlc(DNXHDEncContext *ctx)

132 {

133 int i, j, level, run;

134 int max_level = 1 << (ctx->cid_table->bit_depth + 2);

135

136 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->vlc_codes,

137 max_level, 4 * sizeof(*ctx->vlc_codes), fail);

138 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->vlc_bits,

139 max_level, 4 * sizeof(*ctx->vlc_bits), fail);

140 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_codes,

141 63 * 2, fail);

142 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->run_bits,

143 63, fail);

144

145 ctx->vlc_codes += max_level * 2;

146 ctx->vlc_bits += max_level * 2;

147 for (level = -max_level; level < max_level; level++) {

148 for (run = 0; run < 2; run++) {

149 int index = (level << 1) | run;

150 int sign, offset = 0, alevel = level;

151

152 MASK_ABS(sign, alevel);

153 if (alevel > 64) {

154 offset = (alevel - 1) >> 6;

155 alevel -= offset << 6;

156 }

157 for (j = 0; j < 257; j++) {

158 if (ctx->cid_table->ac_level[j] >> 1 == alevel &&

159 (!offset || (ctx->cid_table->ac_flags[j] & 1) && offset) &&

160 (!run || (ctx->cid_table->ac_flags[j] & 2) && run)) {

161 av_assert1(!ctx->vlc_codes[index]);

162 if (alevel) {

163 ctx->vlc_codes[index] =

164 (ctx->cid_table->ac_codes[j] << 1) | (sign & 1);

165 ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j] + 1;

166 } else {

167 ctx->vlc_codes[index] = ctx->cid_table->ac_codes[j];

168 ctx->vlc_bits[index] = ctx->cid_table->ac_bits[j];

169 }

170 break;

171 }

172 }

173 av_assert0(!alevel || j < 257);

174 if (offset) {

175 ctx->vlc_codes[index] =

176 (ctx->vlc_codes[index] << ctx->cid_table->index_bits) | offset;

177 ctx->vlc_bits[index] += ctx->cid_table->index_bits;

178 }

179 }

180 }

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

182 int run = ctx->cid_table->run[i];

183 av_assert0(run < 63);

184 ctx->run_codes[run] = ctx->cid_table->run_codes[i];

185 ctx->run_bits[run] = ctx->cid_table->run_bits[i];

186 }

187 return 0;

188 fail:

189 return AVERROR(ENOMEM);

190 }

191

192 static av_cold int dnxhd_init_qmat(DNXHDEncContext *ctx, int lbias, int cbias)

193 {

194 // init first elem to 1 to avoid div by 0 in convert_matrix

195 uint16_t weight_matrix[64] = { 1, }; // convert_matrix needs uint16_t*

196 int qscale, i;

197 const uint8_t *luma_weight_table = ctx->cid_table->luma_weight;

198 const uint8_t *chroma_weight_table = ctx->cid_table->chroma_weight;

199

200 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l,

201 (ctx->m.avctx->qmax + 1), 64 * sizeof(int), fail);

202 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c,

203 (ctx->m.avctx->qmax + 1), 64 * sizeof(int), fail);

204 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_l16,

205 (ctx->m.avctx->qmax + 1), 64 * 2 * sizeof(uint16_t),

206 fail);

207 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->qmatrix_c16,

208 (ctx->m.avctx->qmax + 1), 64 * 2 * sizeof(uint16_t),

209 fail);

210

211 if (ctx->cid_table->bit_depth == 8) {

212 for (i = 1; i < 64; i++) {

213 int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]];

214 weight_matrix[j] = ctx->cid_table->luma_weight[i];

215 }

216 ff_convert_matrix(&ctx->m, ctx->qmatrix_l, ctx->qmatrix_l16,

217 weight_matrix, ctx->m.intra_quant_bias, 1,

218 ctx->m.avctx->qmax, 1);

219 for (i = 1; i < 64; i++) {

220 int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]];

221 weight_matrix[j] = ctx->cid_table->chroma_weight[i];

222 }

223 ff_convert_matrix(&ctx->m, ctx->qmatrix_c, ctx->qmatrix_c16,

224 weight_matrix, ctx->m.intra_quant_bias, 1,

225 ctx->m.avctx->qmax, 1);

226

227 for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {

228 for (i = 0; i < 64; i++) {

229 ctx->qmatrix_l[qscale][i] <<= 2;

230 ctx->qmatrix_c[qscale][i] <<= 2;

231 ctx->qmatrix_l16[qscale][0][i] <<= 2;

232 ctx->qmatrix_l16[qscale][1][i] <<= 2;

233 ctx->qmatrix_c16[qscale][0][i] <<= 2;

234 ctx->qmatrix_c16[qscale][1][i] <<= 2;

235 }

236 }

237 } else {

238 // 10-bit

239 for (qscale = 1; qscale <= ctx->m.avctx->qmax; qscale++) {

240 for (i = 1; i < 64; i++) {

241 int j = ctx->m.idsp.idct_permutation[ff_zigzag_direct[i]];

242

243 /* The quantization formula from the VC-3 standard is:

244 * quantized = sign(block[i]) * floor(abs(block[i]/s) * p /

245 * (qscale * weight_table[i]))

246 * Where p is 32 for 8-bit samples and 8 for 10-bit ones.

247 * The s factor compensates scaling of DCT coefficients done by

248 * the DCT routines, and therefore is not present in standard.

249 * It's 8 for 8-bit samples and 4 for 10-bit ones.

250 * We want values of ctx->qtmatrix_l and ctx->qtmatrix_r to be:

251 * ((1 << DNX10BIT_QMAT_SHIFT) * (p / s)) /

252 * (qscale * weight_table[i])

253 * For 10-bit samples, p / s == 2 */

254 ctx->qmatrix_l[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) /

255 (qscale * luma_weight_table[i]);

256 ctx->qmatrix_c[qscale][j] = (1 << (DNX10BIT_QMAT_SHIFT + 1)) /

257 (qscale * chroma_weight_table[i]);

258 }

259 }

260 }

261

262 ctx->m.q_chroma_intra_matrix16 = ctx->qmatrix_c16;

263 ctx->m.q_chroma_intra_matrix = ctx->qmatrix_c;

264 ctx->m.q_intra_matrix16 = ctx->qmatrix_l16;

265 ctx->m.q_intra_matrix = ctx->qmatrix_l;

266

267 return 0;

268 fail:

269 return AVERROR(ENOMEM);

270 }

271

272 static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx)

273 {

274 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_rc, (ctx->m.avctx->qmax + 1), 8160 * sizeof(RCEntry), fail);

275 if (ctx->m.avctx->mb_decision != FF_MB_DECISION_RD)

276 FF_ALLOCZ_ARRAY_OR_GOTO(ctx->m.avctx, ctx->mb_cmp,

277 ctx->m.mb_num, sizeof(RCCMPEntry), fail);

278

279 ctx->frame_bits = (ctx->cid_table->coding_unit_size -

280 640 - 4 - ctx->min_padding) * 8;

281 ctx->qscale = 1;

282 ctx->lambda = 2 << LAMBDA_FRAC_BITS; // qscale 2

283 return 0;

284 fail:

285 return AVERROR(ENOMEM);

286 }

287

288 static av_cold int dnxhd_encode_init(AVCodecContext *avctx)

289 {

290 DNXHDEncContext *ctx = avctx->priv_data;

291 int i, index, bit_depth, ret;

292

293 switch (avctx->pix_fmt) {

294 case AV_PIX_FMT_YUV422P:

295 bit_depth = 8;

296 break;

297 case AV_PIX_FMT_YUV422P10:

298 bit_depth = 10;

299 break;

300 default:

301 av_log(avctx, AV_LOG_ERROR,

302 "pixel format is incompatible with DNxHD\n");

303 return AVERROR(EINVAL);

304 }

305

306 ctx->cid = ff_dnxhd_find_cid(avctx, bit_depth);

307 if (!ctx->cid) {

308 av_log(avctx, AV_LOG_ERROR,

309 "video parameters incompatible with DNxHD. Valid DNxHD profiles:\n");

310 ff_dnxhd_print_profiles(avctx, AV_LOG_ERROR);

311 return AVERROR(EINVAL);

312 }

313 av_log(avctx, AV_LOG_DEBUG, "cid %d\n", ctx->cid);

314

315 index = ff_dnxhd_get_cid_table(ctx->cid);

316 av_assert0(index >= 0);

317

318 ctx->cid_table = &ff_dnxhd_cid_table[index];

319

320 ctx->m.avctx = avctx;

321 ctx->m.mb_intra = 1;

322 ctx->m.h263_aic = 1;

323

324 avctx->bits_per_raw_sample = ctx->cid_table->bit_depth;

325

326 ff_blockdsp_init(&ctx->bdsp, avctx);

327 ff_fdctdsp_init(&ctx->m.fdsp, avctx);

328 ff_mpv_idct_init(&ctx->m);

329 ff_mpegvideoencdsp_init(&ctx->m.mpvencdsp, avctx);

330 ff_pixblockdsp_init(&ctx->m.pdsp, avctx);

331 ff_dct_encode_init(&ctx->m);

332

333 if (!ctx->m.dct_quantize)

334 ctx->m.dct_quantize = ff_dct_quantize_c;

335

336 if (ctx->cid_table->bit_depth == 10) {

337 ctx->m.dct_quantize = dnxhd_10bit_dct_quantize;

338 ctx->get_pixels_8x4_sym = dnxhd_10bit_get_pixels_8x4_sym;

339 ctx->block_width_l2 = 4;

340 } else {

341 ctx->get_pixels_8x4_sym = dnxhd_8bit_get_pixels_8x4_sym;

342 ctx->block_width_l2 = 3;

343 }

344

345 if (ARCH_X86)

346 ff_dnxhdenc_init_x86(ctx);

347

348 ctx->m.mb_height = (avctx->height + 15) / 16;

349 ctx->m.mb_width = (avctx->width + 15) / 16;

350

351 if (avctx->flags & CODEC_FLAG_INTERLACED_DCT) {

352 ctx->interlaced = 1;

353 ctx->m.mb_height /= 2;

354 }

355

356 ctx->m.mb_num = ctx->m.mb_height * ctx->m.mb_width;

357

358 if (avctx->intra_quant_bias != FF_DEFAULT_QUANT_BIAS)

359 ctx->m.intra_quant_bias = avctx->intra_quant_bias;

360 // XXX tune lbias/cbias

361 if ((ret = dnxhd_init_qmat(ctx, ctx->m.intra_quant_bias, 0)) < 0)

362 return ret;

363

364 /* Avid Nitris hardware decoder requires a minimum amount of padding

365 * in the coding unit payload */

366 if (ctx->nitris_compat)

367 ctx->min_padding = 1600;

368

369 if ((ret = dnxhd_init_vlc(ctx)) < 0)

370 return ret;

371 if ((ret = dnxhd_init_rc(ctx)) < 0)

372 return ret;

373

374 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_size,

375 ctx->m.mb_height * sizeof(uint32_t), fail);

376 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->slice_offs,

377 ctx->m.mb_height * sizeof(uint32_t), fail);

378 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_bits,

379 ctx->m.mb_num * sizeof(uint16_t), fail);

380 FF_ALLOCZ_OR_GOTO(ctx->m.avctx, ctx->mb_qscale,

381 ctx->m.mb_num * sizeof(uint8_t), fail);

382

383 avctx->coded_frame = av_frame_alloc();

384 if (!avctx->coded_frame)

385 return AVERROR(ENOMEM);

386

387 avctx->coded_frame->key_frame = 1;

388 avctx->coded_frame->pict_type = AV_PICTURE_TYPE_I;

389

390 if (avctx->thread_count > MAX_THREADS) {

391 av_log(avctx, AV_LOG_ERROR, "too many threads\n");

392 return AVERROR(EINVAL);

393 }

394

395 if (avctx->qmax <= 1) {

396 av_log(avctx, AV_LOG_ERROR, "qmax must be at least 2\n");

397 return AVERROR(EINVAL);

398 }

399

400 ctx->thread[0] = ctx;

401 for (i = 1; i < avctx->thread_count; i++) {

402 ctx->thread[i] = av_malloc(sizeof(DNXHDEncContext));

403 memcpy(ctx->thread[i], ctx, sizeof(DNXHDEncContext));

404 }

405

406 return 0;

407 fail: // for FF_ALLOCZ_OR_GOTO

408 return AVERROR(ENOMEM);

409 }

410

411 static int dnxhd_write_header(AVCodecContext *avctx, uint8_t *buf)

412 {

413 DNXHDEncContext *ctx = avctx->priv_data;

414 static const uint8_t header_prefix[5] = { 0x00, 0x00, 0x02, 0x80, 0x01 };

415

416 memset(buf, 0, 640);

417

418 memcpy(buf, header_prefix, 5);

419 buf[5] = ctx->interlaced ? ctx->cur_field + 2 : 0x01;

420 buf[6] = 0x80; // crc flag off

421 buf[7] = 0xa0; // reserved

422 AV_WB16(buf + 0x18, avctx->height >> ctx->interlaced); // ALPF

423 AV_WB16(buf + 0x1a, avctx->width); // SPL

424 AV_WB16(buf + 0x1d, avctx->height >> ctx->interlaced); // NAL

425

426 buf[0x21] = ctx->cid_table->bit_depth == 10 ? 0x58 : 0x38;

427 buf[0x22] = 0x88 + (ctx->interlaced << 2);

428 AV_WB32(buf + 0x28, ctx->cid); // CID

429 buf[0x2c] = ctx->interlaced ? 0 : 0x80;

430

431 buf[0x5f] = 0x01; // UDL

432

433 buf[0x167] = 0x02; // reserved

434 AV_WB16(buf + 0x16a, ctx->m.mb_height * 4 + 4); // MSIPS

435 buf[0x16d] = ctx->m.mb_height; // Ns

436 buf[0x16f] = 0x10; // reserved

437

438 ctx->msip = buf + 0x170;

439 return 0;

440 }

441

442 static av_always_inline void dnxhd_encode_dc(DNXHDEncContext *ctx, int diff)

443 {

444 int nbits;

445 if (diff < 0) {

446 nbits = av_log2_16bit(-2 * diff);

447 diff--;

448 } else {

449 nbits = av_log2_16bit(2 * diff);

450 }

451 put_bits(&ctx->m.pb, ctx->cid_table->dc_bits[nbits] + nbits,

452 (ctx->cid_table->dc_codes[nbits] << nbits) +

453 (diff & ((1 << nbits) - 1)));

454 }

455

456 static av_always_inline

457 void dnxhd_encode_block(DNXHDEncContext *ctx, int16_t *block,

458 int last_index, int n)

459 {

460 int last_non_zero = 0;

461 int slevel, i, j;

462

463 dnxhd_encode_dc(ctx, block[0] - ctx->m.last_dc[n]);

464 ctx->m.last_dc[n] = block[0];

465

466 for (i = 1; i <= last_index; i++) {

467 j = ctx->m.intra_scantable.permutated[i];

468 slevel = block[j];

469 if (slevel) {

470 int run_level = i - last_non_zero - 1;

471 int rlevel = (slevel << 1) | !!run_level;

472 put_bits(&ctx->m.pb, ctx->vlc_bits[rlevel], ctx->vlc_codes[rlevel]);

473 if (run_level)

474 put_bits(&ctx->m.pb, ctx->run_bits[run_level],

475 ctx->run_codes[run_level]);

476 last_non_zero = i;

477 }

478 }

479 put_bits(&ctx->m.pb, ctx->vlc_bits[0], ctx->vlc_codes[0]); // EOB

480 }

481

482 static av_always_inline

483 void dnxhd_unquantize_c(DNXHDEncContext *ctx, int16_t *block, int n,

484 int qscale, int last_index)

485 {

486 const uint8_t *weight_matrix;

487 int level;

488 int i;

489

490 weight_matrix = (n & 2) ? ctx->cid_table->chroma_weight

491 : ctx->cid_table->luma_weight;

492

493 for (i = 1; i <= last_index; i++) {

494 int j = ctx->m.intra_scantable.permutated[i];

495 level = block[j];

496 if (level) {

497 if (level < 0) {

498 level = (1 - 2 * level) * qscale * weight_matrix[i];

499 if (ctx->cid_table->bit_depth == 10) {

500 if (weight_matrix[i] != 8)

501 level += 8;

502 level >>= 4;

503 } else {

504 if (weight_matrix[i] != 32)

505 level += 32;

506 level >>= 6;

507 }

508 level = -level;

509 } else {

510 level = (2 * level + 1) * qscale * weight_matrix[i];

511 if (ctx->cid_table->bit_depth == 10) {

512 if (weight_matrix[i] != 8)

513 level += 8;

514 level >>= 4;

515 } else {

516 if (weight_matrix[i] != 32)

517 level += 32;

518 level >>= 6;

519 }

520 }

521 block[j] = level;

522 }

523 }

524 }

525

526 static av_always_inline int dnxhd_ssd_block(int16_t *qblock, int16_t *block)

527 {

528 int score = 0;

529 int i;

530 for (i = 0; i < 64; i++)

531 score += (block[i] - qblock[i]) * (block[i] - qblock[i]);

532 return score;

533 }

534

535 static av_always_inline

536 int dnxhd_calc_ac_bits(DNXHDEncContext *ctx, int16_t *block, int last_index)

537 {

538 int last_non_zero = 0;

539 int bits = 0;

540 int i, j, level;

541 for (i = 1; i <= last_index; i++) {

542 j = ctx->m.intra_scantable.permutated[i];

543 level = block[j];

544 if (level) {

545 int run_level = i - last_non_zero - 1;

546 bits += ctx->vlc_bits[(level << 1) |

547 !!run_level] + ctx->run_bits[run_level];

548 last_non_zero = i;

549 }

550 }

551 return bits;

552 }

553

554 static av_always_inline

555 void dnxhd_get_blocks(DNXHDEncContext *ctx, int mb_x, int mb_y)

556 {

557 const int bs = ctx->block_width_l2;

558 const int bw = 1 << bs;

559 const uint8_t *ptr_y = ctx->thread[0]->src[0] +

560 ((mb_y << 4) * ctx->m.linesize) + (mb_x << bs + 1);

561 const uint8_t *ptr_u = ctx->thread[0]->src[1] +

562 ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);

563 const uint8_t *ptr_v = ctx->thread[0]->src[2] +

564 ((mb_y << 4) * ctx->m.uvlinesize) + (mb_x << bs);

565 PixblockDSPContext *pdsp = &ctx->m.pdsp;

566

567 pdsp->get_pixels(ctx->blocks[0], ptr_y, ctx->m.linesize);

568 pdsp->get_pixels(ctx->blocks[1], ptr_y + bw, ctx->m.linesize);

569 pdsp->get_pixels(ctx->blocks[2], ptr_u, ctx->m.uvlinesize);

570 pdsp->get_pixels(ctx->blocks[3], ptr_v, ctx->m.uvlinesize);

571

572 if (mb_y + 1 == ctx->m.mb_height && ctx->m.avctx->height == 1080) {

573 if (ctx->interlaced) {

574 ctx->get_pixels_8x4_sym(ctx->blocks[4],

575 ptr_y + ctx->dct_y_offset,

576 ctx->m.linesize);

577 ctx->get_pixels_8x4_sym(ctx->blocks[5],

578 ptr_y + ctx->dct_y_offset + bw,

579 ctx->m.linesize);

580 ctx->get_pixels_8x4_sym(ctx->blocks[6],

581 ptr_u + ctx->dct_uv_offset,

582 ctx->m.uvlinesize);

583 ctx->get_pixels_8x4_sym(ctx->blocks[7],

584 ptr_v + ctx->dct_uv_offset,

585 ctx->m.uvlinesize);

586 } else {

587 ctx->bdsp.clear_block(ctx->blocks[4]);

588 ctx->bdsp.clear_block(ctx->blocks[5]);

589 ctx->bdsp.clear_block(ctx->blocks[6]);

590 ctx->bdsp.clear_block(ctx->blocks[7]);

591 }

592 } else {

593 pdsp->get_pixels(ctx->blocks[4],

594 ptr_y + ctx->dct_y_offset, ctx->m.linesize);

595 pdsp->get_pixels(ctx->blocks[5],

596 ptr_y + ctx->dct_y_offset + bw, ctx->m.linesize);

597 pdsp->get_pixels(ctx->blocks[6],

598 ptr_u + ctx->dct_uv_offset, ctx->m.uvlinesize);

599 pdsp->get_pixels(ctx->blocks[7],

600 ptr_v + ctx->dct_uv_offset, ctx->m.uvlinesize);

601 }

602 }

603

604 static av_always_inline

605 int dnxhd_switch_matrix(DNXHDEncContext *ctx, int i)

606 {

607 const static uint8_t component[8]={0,0,1,2,0,0,1,2};

608 return component[i];

609 }

610

611 static int dnxhd_calc_bits_thread(AVCodecContext *avctx, void *arg,

612 int jobnr, int threadnr)

613 {

614 DNXHDEncContext *ctx = avctx->priv_data;

615 int mb_y = jobnr, mb_x;

616 int qscale = ctx->qscale;

617 LOCAL_ALIGNED_16(int16_t, block, [64]);

618 ctx = ctx->thread[threadnr];

619

620 ctx->m.last_dc[0] =

621 ctx->m.last_dc[1] =

622 ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2);

623

624 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

625 unsigned mb = mb_y * ctx->m.mb_width + mb_x;

626 int ssd = 0;

627 int ac_bits = 0;

628 int dc_bits = 0;

629 int i;

630

631 dnxhd_get_blocks(ctx, mb_x, mb_y);

632

633 for (i = 0; i < 8; i++) {

634 int16_t *src_block = ctx->blocks[i];

635 int overflow, nbits, diff, last_index;

636 int n = dnxhd_switch_matrix(ctx, i);

637

638 memcpy(block, src_block, 64 * sizeof(*block));

639 last_index = ctx->m.dct_quantize(&ctx->m, block, 4 & (2*i),

640 qscale, &overflow);

641 ac_bits += dnxhd_calc_ac_bits(ctx, block, last_index);

642

643 diff = block[0] - ctx->m.last_dc[n];

644 if (diff < 0)

645 nbits = av_log2_16bit(-2 * diff);

646 else

647 nbits = av_log2_16bit(2 * diff);

648

649 av_assert1(nbits < ctx->cid_table->bit_depth + 4);

650 dc_bits += ctx->cid_table->dc_bits[nbits] + nbits;

651

652 ctx->m.last_dc[n] = block[0];

653

654 if (avctx->mb_decision == FF_MB_DECISION_RD || !RC_VARIANCE) {

655 dnxhd_unquantize_c(ctx, block, i, qscale, last_index);

656 ctx->m.idsp.idct(block);

657 ssd += dnxhd_ssd_block(block, src_block);

658 }

659 }

660 ctx->mb_rc[qscale][mb].ssd = ssd;

661 ctx->mb_rc[qscale][mb].bits = ac_bits + dc_bits + 12 +

662 8 * ctx->vlc_bits[0];

663 }

664 return 0;

665 }

666

667 static int dnxhd_encode_thread(AVCodecContext *avctx, void *arg,

668 int jobnr, int threadnr)

669 {

670 DNXHDEncContext *ctx = avctx->priv_data;

671 int mb_y = jobnr, mb_x;

672 ctx = ctx->thread[threadnr];

673 init_put_bits(&ctx->m.pb, (uint8_t *)arg + 640 + ctx->slice_offs[jobnr],

674 ctx->slice_size[jobnr]);

675

676 ctx->m.last_dc[0] =

677 ctx->m.last_dc[1] =

678 ctx->m.last_dc[2] = 1 << (ctx->cid_table->bit_depth + 2);

679 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

680 unsigned mb = mb_y * ctx->m.mb_width + mb_x;

681 int qscale = ctx->mb_qscale[mb];

682 int i;

683

684 put_bits(&ctx->m.pb, 12, qscale << 1);

685

686 dnxhd_get_blocks(ctx, mb_x, mb_y);

687

688 for (i = 0; i < 8; i++) {

689 int16_t *block = ctx->blocks[i];

690 int overflow, n = dnxhd_switch_matrix(ctx, i);

691 int last_index = ctx->m.dct_quantize(&ctx->m, block, 4 & (2*i),

692 qscale, &overflow);

693 // START_TIMER;

694 dnxhd_encode_block(ctx, block, last_index, n);

695 // STOP_TIMER("encode_block");

696 }

697 }

698 if (put_bits_count(&ctx->m.pb) & 31)

699 put_bits(&ctx->m.pb, 32 - (put_bits_count(&ctx->m.pb) & 31), 0);

700 flush_put_bits(&ctx->m.pb);

701 return 0;

702 }

703

704 static void dnxhd_setup_threads_slices(DNXHDEncContext *ctx)

705 {

706 int mb_y, mb_x;

707 int offset = 0;

708 for (mb_y = 0; mb_y < ctx->m.mb_height; mb_y++) {

709 int thread_size;

710 ctx->slice_offs[mb_y] = offset;

711 ctx->slice_size[mb_y] = 0;

712 for (mb_x = 0; mb_x < ctx->m.mb_width; mb_x++) {

713 unsigned mb = mb_y * ctx->m.mb_width + mb_x;

714 ctx->slice_size[mb_y] += ctx->mb_bits[mb];

715 }

716 ctx->slice_size[mb_y] = (ctx->slice_size[mb_y] + 31) & ~31;

717 ctx->slice_size[mb_y] >>= 3;

718 thread_size = ctx->slice_size[mb_y];

719 offset += thread_size;

720 }

721 }

722

723 static int dnxhd_mb_var_thread(AVCodecContext *avctx, void *arg,

724 int jobnr, int threadnr)

725 {

726 DNXHDEncContext *ctx = avctx->priv_data;

727 int mb_y = jobnr, mb_x, x, y;

728 int partial_last_row = (mb_y == ctx->m.mb_height - 1) &&

729 ((avctx->height >> ctx->interlaced) & 0xF);

730

731 ctx = ctx->thread[threadnr];

732 if (ctx->cid_table->bit_depth == 8) {

733 uint8_t *pix = ctx->thread[0]->src[0] + ((mb_y << 4) * ctx->m.linesize);

734 for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x, pix += 16) {

735 unsigned mb = mb_y * ctx->m.mb_width + mb_x;

736 int sum;

737 int varc;

738

739 if (!partial_last_row && mb_x * 16 <= avctx->width - 16) {

740 sum = ctx->m.mpvencdsp.pix_sum(pix, ctx->m.linesize);

741 varc = ctx->m.mpvencdsp.pix_norm1(pix, ctx->m.linesize);

742 } else {

743 int bw = FFMIN(avctx->width - 16 * mb_x, 16);

744 int bh = FFMIN((avctx->height >> ctx->interlaced) - 16 * mb_y, 16);

745 sum = varc = 0;

746 for (y = 0; y < bh; y++) {

747 for (x = 0; x < bw; x++) {

748 uint8_t val = pix[x + y * ctx->m.linesize];

749 sum += val;

750 varc += val * val;

751 }

752 }

753 }

754 varc = (varc - (((unsigned) sum * sum) >> 8) + 128) >> 8;

755

756 ctx->mb_cmp[mb].value = varc;

757 ctx->mb_cmp[mb].mb = mb;

758 }

759 } else { // 10-bit

760 int const linesize = ctx->m.linesize >> 1;

761 for (mb_x = 0; mb_x < ctx->m.mb_width; ++mb_x) {

762 uint16_t *pix = (uint16_t *)ctx->thread[0]->src[0] +

763 ((mb_y << 4) * linesize) + (mb_x << 4);

764 unsigned mb = mb_y * ctx->m.mb_width + mb_x;

765 int sum = 0;

766 int sqsum = 0;

767 int mean, sqmean;

768 int i, j;

769 // Macroblocks are 16x16 pixels, unlike DCT blocks which are 8x8.

770 for (i = 0; i < 16; ++i) {

771 for (j = 0; j < 16; ++j) {

772 // Turn 16-bit pixels into 10-bit ones.

773 int const sample = (unsigned) pix[j] >> 6;

774 sum += sample;

775 sqsum += sample * sample;

776 // 2^10 * 2^10 * 16 * 16 = 2^28, which is less than INT_MAX

777 }

778 pix += linesize;

779 }

780 mean = sum >> 8; // 16*16 == 2^8

781 sqmean = sqsum >> 8;

782 ctx->mb_cmp[mb].value = sqmean - mean * mean;

783 ctx->mb_cmp[mb].mb = mb;

784 }

785 }

786 return 0;

787 }

788

789 static int dnxhd_encode_rdo(AVCodecContext *avctx, DNXHDEncContext *ctx)

790 {

791 int lambda, up_step, down_step;

792 int last_lower = INT_MAX, last_higher = 0;

793 int x, y, q;

794

795 for (q = 1; q < avctx->qmax; q++) {

796 ctx->qscale = q;

797 avctx->execute2(avctx, dnxhd_calc_bits_thread,

798 NULL, NULL, ctx->m.mb_height);

799 }

800 up_step = down_step = 2 << LAMBDA_FRAC_BITS;

801 lambda = ctx->lambda;

802

803 for (;;) {

804 int bits = 0;

805 int end = 0;

806 if (lambda == last_higher) {

807 lambda++;

808 end = 1; // need to set final qscales/bits

809 }

810 for (y = 0; y < ctx->m.mb_height; y++) {

811 for (x = 0; x < ctx->m.mb_width; x++) {

812 unsigned min = UINT_MAX;

813 int qscale = 1;

814 int mb = y * ctx->m.mb_width + x;

815 for (q = 1; q < avctx->qmax; q++) {

816 unsigned score = ctx->mb_rc[q][mb].bits * lambda +

817 ((unsigned) ctx->mb_rc[q][mb].ssd << LAMBDA_FRAC_BITS);

818 if (score < min) {

819 min = score;

820 qscale = q;

821 }

822 }

823 bits += ctx->mb_rc[qscale][mb].bits;

824 ctx->mb_qscale[mb] = qscale;

825 ctx->mb_bits[mb] = ctx->mb_rc[qscale][mb].bits;

826 }

827 bits = (bits + 31) & ~31; // padding

828 if (bits > ctx->frame_bits)

829 break;

830 }

831 // av_dlog(ctx->m.avctx,

832 // "lambda %d, up %u, down %u, bits %d, frame %d\n",

833 // lambda, last_higher, last_lower, bits, ctx->frame_bits);

834 if (end) {

835 if (bits > ctx->frame_bits)

836 return AVERROR(EINVAL);

837 break;

838 }

839 if (bits < ctx->frame_bits) {

840 last_lower = FFMIN(lambda, last_lower);

841 if (last_higher != 0)

842 lambda = (lambda+last_higher)>>1;

843 else

844 lambda -= down_step;

845 down_step = FFMIN((int64_t)down_step*5, INT_MAX);

846 up_step = 1<<LAMBDA_FRAC_BITS;

847 lambda = FFMAX(1, lambda);

848 if (lambda == last_lower)

849 break;

850 } else {

851 last_higher = FFMAX(lambda, last_higher);

852 if (last_lower != INT_MAX)

853 lambda = (lambda+last_lower)>>1;

854 else if ((int64_t)lambda + up_step > INT_MAX)

855 return AVERROR(EINVAL);

856 else

857 lambda += up_step;

858 up_step = FFMIN((int64_t)up_step*5, INT_MAX);

859 down_step = 1<<LAMBDA_FRAC_BITS;

860 }

861 }

862 //av_dlog(ctx->m.avctx, "out lambda %d\n", lambda);

863 ctx->lambda = lambda;

864 return 0;

865 }

866

867 static int dnxhd_find_qscale(DNXHDEncContext *ctx)

868 {

869 int bits = 0;

870 int up_step = 1;

871 int down_step = 1;

872 int last_higher = 0;

873 int last_lower = INT_MAX;

874 int qscale;

875 int x, y;

876

877 qscale = ctx->qscale;

878 for (;;) {

879 bits = 0;

880 ctx->qscale = qscale;

881 // XXX avoid recalculating bits

882 ctx->m.avctx->execute2(ctx->m.avctx, dnxhd_calc_bits_thread,

883 NULL, NULL, ctx->m.mb_height);

884 for (y = 0; y < ctx->m.mb_height; y++) {

885 for (x = 0; x < ctx->m.mb_width; x++)

886 bits += ctx->mb_rc[qscale][y*ctx->m.mb_width+x].bits;

887 bits = (bits+31)&~31; // padding

888 if (bits > ctx->frame_bits)

889 break;

890 }

891 // av_dlog(ctx->m.avctx,

892 // "%d, qscale %d, bits %d, frame %d, higher %d, lower %d\n",

893 // ctx->m.avctx->frame_number, qscale, bits, ctx->frame_bits,

894 // last_higher, last_lower);

895 if (bits < ctx->frame_bits) {

896 if (qscale == 1)

897 return 1;

898 if (last_higher == qscale - 1) {

899 qscale = last_higher;

900 break;

901 }

902 last_lower = FFMIN(qscale, last_lower);

903 if (last_higher != 0)

904 qscale = (qscale + last_higher) >> 1;

905 else

906 qscale -= down_step++;

907 if (qscale < 1)

908 qscale = 1;

909 up_step = 1;

910 } else {

911 if (last_lower == qscale + 1)

912 break;

913 last_higher = FFMAX(qscale, last_higher);

914 if (last_lower != INT_MAX)

915 qscale = (qscale + last_lower) >> 1;

916 else

917 qscale += up_step++;

918 down_step = 1;

919 if (qscale >= ctx->m.avctx->qmax)

920 return AVERROR(EINVAL);

921 }

922 }

923 //av_dlog(ctx->m.avctx, "out qscale %d\n", qscale);

924 ctx->qscale = qscale;

925 return 0;

926 }

927

928 #define BUCKET_BITS 8

929 #define RADIX_PASSES 4

930 #define NBUCKETS (1 << BUCKET_BITS)

931

932 static inline int get_bucket(int value, int shift)

933 {

934 value >>= shift;

935 value &= NBUCKETS - 1;

936 return NBUCKETS - 1 - value;

937 }

938

939 static void radix_count(const RCCMPEntry *data, int size,

940 int buckets[RADIX_PASSES][NBUCKETS])

941 {

942 int i, j;

943 memset(buckets, 0, sizeof(buckets[0][0]) * RADIX_PASSES * NBUCKETS);

944 for (i = 0; i < size; i++) {

945 int v = data[i].value;

946 for (j = 0; j < RADIX_PASSES; j++) {

947 buckets[j][get_bucket(v, 0)]++;

948 v >>= BUCKET_BITS;

949 }

950 av_assert1(!v);

951 }

952 for (j = 0; j < RADIX_PASSES; j++) {

953 int offset = size;

954 for (i = NBUCKETS - 1; i >= 0; i--)

955 buckets[j][i] = offset -= buckets[j][i];

956 av_assert1(!buckets[j][0]);

957 }

958 }

959

960 static void radix_sort_pass(RCCMPEntry *dst, const RCCMPEntry *data,

961 int size, int buckets[NBUCKETS], int pass)

962 {

963 int shift = pass * BUCKET_BITS;

964 int i;

965 for (i = 0; i < size; i++) {

966 int v = get_bucket(data[i].value, shift);

967 int pos = buckets[v]++;

968 dst[pos] = data[i];

969 }

970 }

971

972 static void radix_sort(RCCMPEntry *data, int size)

973 {

974 int buckets[RADIX_PASSES][NBUCKETS];

975 RCCMPEntry *tmp = av_malloc_array(size, sizeof(*tmp));

976 radix_count(data, size, buckets);

977 radix_sort_pass(tmp, data, size, buckets[0], 0);

978 radix_sort_pass(data, tmp, size, buckets[1], 1);

979 if (buckets[2][NBUCKETS - 1] || buckets[3][NBUCKETS - 1]) {

980 radix_sort_pass(tmp, data, size, buckets[2], 2);

981 radix_sort_pass(data, tmp, size, buckets[3], 3);

982 }

983 av_free(tmp);

984 }

985

986 static int dnxhd_encode_fast(AVCodecContext *avctx, DNXHDEncContext *ctx)

987 {

988 int max_bits = 0;

989 int ret, x, y;

990 if ((ret = dnxhd_find_qscale(ctx)) < 0)

991 return ret;

992 for (y = 0; y < ctx->m.mb_height; y++) {

993 for (x = 0; x < ctx->m.mb_width; x++) {

994 int mb = y * ctx->m.mb_width + x;

995 int delta_bits;

996 ctx->mb_qscale[mb] = ctx->qscale;

997 ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale][mb].bits;

998 max_bits += ctx->mb_rc[ctx->qscale][mb].bits;

999 if (!RC_VARIANCE) {

1000 delta_bits = ctx->mb_rc[ctx->qscale][mb].bits -

1001 ctx->mb_rc[ctx->qscale + 1][mb].bits;

1002 ctx->mb_cmp[mb].mb = mb;

1003 ctx->mb_cmp[mb].value =

1004 delta_bits ? ((ctx->mb_rc[ctx->qscale][mb].ssd -

1005 ctx->mb_rc[ctx->qscale + 1][mb].ssd) * 100) /

1006 delta_bits

1007 : INT_MIN; // avoid increasing qscale

1008 }

1009 }

1010 max_bits += 31; // worst padding

1011 }

1012 if (!ret) {

1013 if (RC_VARIANCE)

1014 avctx->execute2(avctx, dnxhd_mb_var_thread,

1015 NULL, NULL, ctx->m.mb_height);

1016 radix_sort(ctx->mb_cmp, ctx->m.mb_num);

1017 for (x = 0; x < ctx->m.mb_num && max_bits > ctx->frame_bits; x++) {

1018 int mb = ctx->mb_cmp[x].mb;

1019 max_bits -= ctx->mb_rc[ctx->qscale][mb].bits -

1020 ctx->mb_rc[ctx->qscale + 1][mb].bits;

1021 ctx->mb_qscale[mb] = ctx->qscale + 1;

1022 ctx->mb_bits[mb] = ctx->mb_rc[ctx->qscale + 1][mb].bits;

1023 }

1024 }

1025 return 0;

1026 }

1027

1028 static void dnxhd_load_picture(DNXHDEncContext *ctx, const AVFrame *frame)

1029 {

1030 int i;

1031

1032 for (i = 0; i < ctx->m.avctx->thread_count; i++) {

1033 ctx->thread[i]->m.linesize = frame->linesize[0] << ctx->interlaced;

1034 ctx->thread[i]->m.uvlinesize = frame->linesize[1] << ctx->interlaced;

1035 ctx->thread[i]->dct_y_offset = ctx->m.linesize *8;

1036 ctx->thread[i]->dct_uv_offset = ctx->m.uvlinesize*8;

1037 }

1038

1039 ctx->m.avctx->coded_frame->interlaced_frame = frame->interlaced_frame;

1040 ctx->cur_field = frame->interlaced_frame && !frame->top_field_first;

1041 }

1042

1043 static int dnxhd_encode_picture(AVCodecContext *avctx, AVPacket *pkt,

1044 const AVFrame *frame, int *got_packet)

1045 {

1046 DNXHDEncContext *ctx = avctx->priv_data;

1047 int first_field = 1;

1048 int offset, i, ret;

1049 uint8_t *buf;

1050

1051 if ((ret = ff_alloc_packet2(avctx, pkt, ctx->cid_table->frame_size)) < 0)

1052 return ret;

1053 buf = pkt->data;

1054

1055 dnxhd_load_picture(ctx, frame);

1056

1057 encode_coding_unit:

1058 for (i = 0; i < 3; i++) {

1059 ctx->src[i] = frame->data[i];

1060 if (ctx->interlaced && ctx->cur_field)

1061 ctx->src[i] += frame->linesize[i];

1062 }

1063

1064 dnxhd_write_header(avctx, buf);

1065

1066 if (avctx->mb_decision == FF_MB_DECISION_RD)

1067 ret = dnxhd_encode_rdo(avctx, ctx);

1068 else

1069 ret = dnxhd_encode_fast(avctx, ctx);

1070 if (ret < 0) {

1071 av_log(avctx, AV_LOG_ERROR,

1072 "picture could not fit ratecontrol constraints, increase qmax\n");

1073 return ret;

1074 }

1075

1076 dnxhd_setup_threads_slices(ctx);

1077

1078 offset = 0;

1079 for (i = 0; i < ctx->m.mb_height; i++) {

1080 AV_WB32(ctx->msip + i * 4, offset);

1081 offset += ctx->slice_size[i];

1082 av_assert1(!(ctx->slice_size[i] & 3));

1083 }

1084

1085 avctx->execute2(avctx, dnxhd_encode_thread, buf, NULL, ctx->m.mb_height);

1086

1087 av_assert1(640 + offset + 4 <= ctx->cid_table->coding_unit_size);

1088 memset(buf + 640 + offset, 0,

1089 ctx->cid_table->coding_unit_size - 4 - offset - 640);

1090

1091 AV_WB32(buf + ctx->cid_table->coding_unit_size - 4, 0x600DC0DE); // EOF

1092

1093 if (ctx->interlaced && first_field) {

1094 first_field = 0;

1095 ctx->cur_field ^= 1;

1096 buf += ctx->cid_table->coding_unit_size;

1097 goto encode_coding_unit;

1098 }

1099

1100 avctx->coded_frame->quality = ctx->qscale * FF_QP2LAMBDA;

1101

1102 pkt->flags |= AV_PKT_FLAG_KEY;

1103 *got_packet = 1;

1104 return 0;

1105 }

1106

1107 static av_cold int dnxhd_encode_end(AVCodecContext *avctx)

1108 {

1109 DNXHDEncContext *ctx = avctx->priv_data;

1110 int max_level = 1 << (ctx->cid_table->bit_depth + 2);

1111 int i;

1112

1113 av_free(ctx->vlc_codes - max_level * 2);

1114 av_free(ctx->vlc_bits - max_level * 2);

1115 av_freep(&ctx->run_codes);

1116 av_freep(&ctx->run_bits);

1117

1118 av_freep(&ctx->mb_bits);

1119 av_freep(&ctx->mb_qscale);

1120 av_freep(&ctx->mb_rc);

1121 av_freep(&ctx->mb_cmp);

1122 av_freep(&ctx->slice_size);

1123 av_freep(&ctx->slice_offs);

1124

1125 av_freep(&ctx->qmatrix_c);

1126 av_freep(&ctx->qmatrix_l);

1127 av_freep(&ctx->qmatrix_c16);

1128 av_freep(&ctx->qmatrix_l16);

1129

1130 for (i = 1; i < avctx->thread_count; i++)

1131 av_freep(&ctx->thread[i]);

1132

1133 av_frame_free(&avctx->coded_frame);

1134

1135 return 0;

1136 }

1137

1138 static const AVCodecDefault dnxhd_defaults[] = {

1139 { "qmax", "1024" }, /* Maximum quantization scale factor allowed for VC-3 */

1140 { NULL },

1141 };

1142

1143 AVCodec ff_dnxhd_encoder = {

1144 .name = "dnxhd",

1145 .long_name = NULL_IF_CONFIG_SMALL("VC3/DNxHD"),

1146 .type = AVMEDIA_TYPE_VIDEO,

1147 .id = AV_CODEC_ID_DNXHD,

1148 .priv_data_size = sizeof(DNXHDEncContext),

1149 .init = dnxhd_encode_init,

1150 .encode2 = dnxhd_encode_picture,

1151 .close = dnxhd_encode_end,

1152 .capabilities = CODEC_CAP_SLICE_THREADS,

1153 .pix_fmts = (const enum AVPixelFormat[]) {

1154 AV_PIX_FMT_YUV422P,

1155 AV_PIX_FMT_YUV422P10,

1156 AV_PIX_FMT_NONE

1157 },

1158 .priv_class = &dnxhd_class,

1159 .defaults = dnxhd_defaults,

1160 };

Generated on Sun Mar 8 2015 02:34:50 for FFmpeg by doxygen 1.8.2