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 */ 18 19#include "libavutil/avstring.h" 20#include "libavutil/display.h" 21#include "libavutil/common.h" 22#include "libavutil/opt.h" 23 24#include "bsf.h" 25#include "bsf_internal.h" 26#include "cbs.h" 27#include "cbs_bsf.h" 28#include "cbs_h264.h" 29#include "h264.h" 30#include "h264_levels.h" 31#include "h264_sei.h" 32 33enum { 34 FLIP_HORIZONTAL = 1, 35 FLIP_VERTICAL = 2, 36}; 37 38enum { 39 LEVEL_UNSET = -2, 40 LEVEL_AUTO = -1, 41}; 42 43typedef struct H264MetadataContext { 44 CBSBSFContext common; 45 46 int done_first_au; 47 48 int aud; 49 H264RawAUD aud_nal; 50 51 AVRational sample_aspect_ratio; 52 53 int overscan_appropriate_flag; 54 55 int video_format; 56 int video_full_range_flag; 57 int colour_primaries; 58 int transfer_characteristics; 59 int matrix_coefficients; 60 61 int chroma_sample_loc_type; 62 63 AVRational tick_rate; 64 int fixed_frame_rate_flag; 65 int zero_new_constraint_set_flags; 66 67 int crop_left; 68 int crop_right; 69 int crop_top; 70 int crop_bottom; 71 72 const char *sei_user_data; 73 SEIRawUserDataUnregistered sei_user_data_payload; 74 75 int delete_filler; 76 77 int display_orientation; 78 double rotate; 79 int flip; 80 H264RawSEIDisplayOrientation display_orientation_payload; 81 82 int level; 83} H264MetadataContext; 84 85 86static int h264_metadata_insert_aud(AVBSFContext *bsf, 87 CodedBitstreamFragment *au) 88{ 89 H264MetadataContext *ctx = bsf->priv_data; 90 int primary_pic_type_mask = 0xff; 91 int err, i, j; 92 93 static const int primary_pic_type_table[] = { 94 0x084, // 2, 7 95 0x0a5, // 0, 2, 5, 7 96 0x0e7, // 0, 1, 2, 5, 6, 7 97 0x210, // 4, 9 98 0x318, // 3, 4, 8, 9 99 0x294, // 2, 4, 7, 9 100 0x3bd, // 0, 2, 3, 4, 5, 7, 8, 9 101 0x3ff, // 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 102 }; 103 104 for (i = 0; i < au->nb_units; i++) { 105 if (au->units[i].type == H264_NAL_SLICE || 106 au->units[i].type == H264_NAL_IDR_SLICE) { 107 H264RawSlice *slice = au->units[i].content; 108 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) { 109 if (!(primary_pic_type_table[j] & 110 (1 << slice->header.slice_type))) 111 primary_pic_type_mask &= ~(1 << j); 112 } 113 } 114 } 115 for (j = 0; j < FF_ARRAY_ELEMS(primary_pic_type_table); j++) 116 if (primary_pic_type_mask & (1 << j)) 117 break; 118 if (j >= FF_ARRAY_ELEMS(primary_pic_type_table)) { 119 av_log(bsf, AV_LOG_ERROR, "No usable primary_pic_type: " 120 "invalid slice types?\n"); 121 return AVERROR_INVALIDDATA; 122 } 123 124 ctx->aud_nal = (H264RawAUD) { 125 .nal_unit_header.nal_unit_type = H264_NAL_AUD, 126 .primary_pic_type = j, 127 }; 128 129 err = ff_cbs_insert_unit_content(au, 0, H264_NAL_AUD, 130 &ctx->aud_nal, NULL); 131 if (err < 0) { 132 av_log(bsf, AV_LOG_ERROR, "Failed to insert AUD.\n"); 133 return err; 134 } 135 136 return 0; 137} 138 139static int h264_metadata_update_sps(AVBSFContext *bsf, 140 H264RawSPS *sps) 141{ 142 H264MetadataContext *ctx = bsf->priv_data; 143 int need_vui = 0; 144 int crop_unit_x, crop_unit_y; 145 146 if (ctx->sample_aspect_ratio.num && ctx->sample_aspect_ratio.den) { 147 // Table E-1. 148 static const AVRational sar_idc[] = { 149 { 0, 0 }, // Unspecified (never written here). 150 { 1, 1 }, { 12, 11 }, { 10, 11 }, { 16, 11 }, 151 { 40, 33 }, { 24, 11 }, { 20, 11 }, { 32, 11 }, 152 { 80, 33 }, { 18, 11 }, { 15, 11 }, { 64, 33 }, 153 { 160, 99 }, { 4, 3 }, { 3, 2 }, { 2, 1 }, 154 }; 155 int num, den, i; 156 157 av_reduce(&num, &den, ctx->sample_aspect_ratio.num, 158 ctx->sample_aspect_ratio.den, 65535); 159 160 for (i = 1; i < FF_ARRAY_ELEMS(sar_idc); i++) { 161 if (num == sar_idc[i].num && 162 den == sar_idc[i].den) 163 break; 164 } 165 if (i == FF_ARRAY_ELEMS(sar_idc)) { 166 sps->vui.aspect_ratio_idc = 255; 167 sps->vui.sar_width = num; 168 sps->vui.sar_height = den; 169 } else { 170 sps->vui.aspect_ratio_idc = i; 171 } 172 sps->vui.aspect_ratio_info_present_flag = 1; 173 need_vui = 1; 174 } 175 176#define SET_VUI_FIELD(field) do { \ 177 if (ctx->field >= 0) { \ 178 sps->vui.field = ctx->field; \ 179 need_vui = 1; \ 180 } \ 181 } while (0) 182 183 if (ctx->overscan_appropriate_flag >= 0) { 184 SET_VUI_FIELD(overscan_appropriate_flag); 185 sps->vui.overscan_info_present_flag = 1; 186 } 187 188 if (ctx->video_format >= 0 || 189 ctx->video_full_range_flag >= 0 || 190 ctx->colour_primaries >= 0 || 191 ctx->transfer_characteristics >= 0 || 192 ctx->matrix_coefficients >= 0) { 193 194 SET_VUI_FIELD(video_format); 195 196 SET_VUI_FIELD(video_full_range_flag); 197 198 if (ctx->colour_primaries >= 0 || 199 ctx->transfer_characteristics >= 0 || 200 ctx->matrix_coefficients >= 0) { 201 202 SET_VUI_FIELD(colour_primaries); 203 SET_VUI_FIELD(transfer_characteristics); 204 SET_VUI_FIELD(matrix_coefficients); 205 206 sps->vui.colour_description_present_flag = 1; 207 } 208 sps->vui.video_signal_type_present_flag = 1; 209 } 210 211 if (ctx->chroma_sample_loc_type >= 0) { 212 sps->vui.chroma_sample_loc_type_top_field = 213 ctx->chroma_sample_loc_type; 214 sps->vui.chroma_sample_loc_type_bottom_field = 215 ctx->chroma_sample_loc_type; 216 sps->vui.chroma_loc_info_present_flag = 1; 217 need_vui = 1; 218 } 219 220 if (ctx->tick_rate.num && ctx->tick_rate.den) { 221 int num, den; 222 223 av_reduce(&num, &den, ctx->tick_rate.num, ctx->tick_rate.den, 224 UINT32_MAX > INT_MAX ? UINT32_MAX : INT_MAX); 225 226 sps->vui.time_scale = num; 227 sps->vui.num_units_in_tick = den; 228 229 sps->vui.timing_info_present_flag = 1; 230 need_vui = 1; 231 } 232 SET_VUI_FIELD(fixed_frame_rate_flag); 233 if (ctx->zero_new_constraint_set_flags) { 234 sps->constraint_set4_flag = 0; 235 sps->constraint_set5_flag = 0; 236 } 237 238 if (sps->separate_colour_plane_flag || sps->chroma_format_idc == 0) { 239 crop_unit_x = 1; 240 crop_unit_y = 2 - sps->frame_mbs_only_flag; 241 } else { 242 crop_unit_x = 1 + (sps->chroma_format_idc < 3); 243 crop_unit_y = (1 + (sps->chroma_format_idc < 2)) * 244 (2 - sps->frame_mbs_only_flag); 245 } 246#define CROP(border, unit) do { \ 247 if (ctx->crop_ ## border >= 0) { \ 248 if (ctx->crop_ ## border % unit != 0) { \ 249 av_log(bsf, AV_LOG_ERROR, "Invalid value for crop_%s: " \ 250 "must be a multiple of %d.\n", #border, unit); \ 251 return AVERROR(EINVAL); \ 252 } \ 253 sps->frame_crop_ ## border ## _offset = \ 254 ctx->crop_ ## border / unit; \ 255 sps->frame_cropping_flag = 1; \ 256 } \ 257 } while (0) 258 CROP(left, crop_unit_x); 259 CROP(right, crop_unit_x); 260 CROP(top, crop_unit_y); 261 CROP(bottom, crop_unit_y); 262#undef CROP 263 264 if (ctx->level != LEVEL_UNSET) { 265 int level_idc; 266 267 if (ctx->level == LEVEL_AUTO) { 268 const H264LevelDescriptor *desc; 269 int64_t bit_rate; 270 int width, height, dpb_frames; 271 int framerate; 272 273 if (sps->vui.nal_hrd_parameters_present_flag) { 274 bit_rate = (sps->vui.nal_hrd_parameters.bit_rate_value_minus1[0] + 1) * 275 (INT64_C(1) << (sps->vui.nal_hrd_parameters.bit_rate_scale + 6)); 276 } else if (sps->vui.vcl_hrd_parameters_present_flag) { 277 bit_rate = (sps->vui.vcl_hrd_parameters.bit_rate_value_minus1[0] + 1) * 278 (INT64_C(1) << (sps->vui.vcl_hrd_parameters.bit_rate_scale + 6)); 279 // Adjust for VCL vs. NAL limits. 280 bit_rate = bit_rate * 6 / 5; 281 } else { 282 bit_rate = 0; 283 } 284 285 // Don't use max_dec_frame_buffering if it is only inferred. 286 dpb_frames = sps->vui.bitstream_restriction_flag ? 287 sps->vui.max_dec_frame_buffering : H264_MAX_DPB_FRAMES; 288 289 width = 16 * (sps->pic_width_in_mbs_minus1 + 1); 290 height = 16 * (sps->pic_height_in_map_units_minus1 + 1) * 291 (2 - sps->frame_mbs_only_flag); 292 293 if (sps->vui.timing_info_present_flag) 294 framerate = sps->vui.time_scale / sps->vui.num_units_in_tick / 2; 295 else 296 framerate = 0; 297 298 desc = ff_h264_guess_level(sps->profile_idc, bit_rate, framerate, 299 width, height, dpb_frames); 300 if (desc) { 301 level_idc = desc->level_idc; 302 } else { 303 av_log(bsf, AV_LOG_WARNING, "Stream does not appear to " 304 "conform to any level: using level 6.2.\n"); 305 level_idc = 62; 306 } 307 } else { 308 level_idc = ctx->level; 309 } 310 311 if (level_idc == 9) { 312 if (sps->profile_idc == 66 || 313 sps->profile_idc == 77 || 314 sps->profile_idc == 88) { 315 sps->level_idc = 11; 316 sps->constraint_set3_flag = 1; 317 } else { 318 sps->level_idc = 9; 319 } 320 } else { 321 sps->level_idc = level_idc; 322 } 323 } 324 325 if (need_vui) 326 sps->vui_parameters_present_flag = 1; 327 328 return 0; 329} 330 331static int h264_metadata_handle_display_orientation(AVBSFContext *bsf, 332 AVPacket *pkt, 333 CodedBitstreamFragment *au, 334 int seek_point) 335{ 336 H264MetadataContext *ctx = bsf->priv_data; 337 SEIRawMessage *message; 338 int err; 339 340 message = NULL; 341 while (ff_cbs_sei_find_message(ctx->common.output, au, 342 SEI_TYPE_DISPLAY_ORIENTATION, 343 &message) == 0) { 344 H264RawSEIDisplayOrientation *disp = message->payload; 345 double angle = disp->anticlockwise_rotation * 180.0 / 65536.0; 346 int32_t *matrix; 347 348 matrix = av_malloc(9 * sizeof(int32_t)); 349 if (!matrix) 350 return AVERROR(ENOMEM); 351 352 /* av_display_rotation_set() expects the angle in the clockwise 353 * direction, hence the first minus. 354 * The below code applies the flips after the rotation, yet 355 * the H.2645 specs require flipping to be applied first. 356 * Because of R O(phi) = O(-phi) R (where R is flipping around 357 * an arbitatry axis and O(phi) is the proper rotation by phi) 358 * we can create display matrices as desired by negating 359 * the degree once for every flip applied. */ 360 angle = -angle * (1 - 2 * !!disp->hor_flip) * (1 - 2 * !!disp->ver_flip); 361 362 av_display_rotation_set(matrix, angle); 363 av_display_matrix_flip(matrix, disp->hor_flip, disp->ver_flip); 364 365 // If there are multiple display orientation messages in an 366 // access unit, then the last one added to the packet (i.e. 367 // the first one in the access unit) will prevail. 368 err = av_packet_add_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, 369 (uint8_t*)matrix, 370 9 * sizeof(int32_t)); 371 if (err < 0) { 372 av_log(bsf, AV_LOG_ERROR, "Failed to attach extracted " 373 "displaymatrix side data to packet.\n"); 374 av_free(matrix); 375 return AVERROR(ENOMEM); 376 } 377 } 378 379 if (ctx->display_orientation == BSF_ELEMENT_REMOVE || 380 ctx->display_orientation == BSF_ELEMENT_INSERT) { 381 ff_cbs_sei_delete_message_type(ctx->common.output, au, 382 SEI_TYPE_DISPLAY_ORIENTATION); 383 } 384 385 if (ctx->display_orientation == BSF_ELEMENT_INSERT) { 386 H264RawSEIDisplayOrientation *disp = 387 &ctx->display_orientation_payload; 388 uint8_t *data; 389 size_t size; 390 int write = 0; 391 392 data = av_packet_get_side_data(pkt, AV_PKT_DATA_DISPLAYMATRIX, &size); 393 if (data && size >= 9 * sizeof(int32_t)) { 394 int32_t matrix[9]; 395 double dmatrix[9]; 396 int hflip, vflip, i; 397 double scale_x, scale_y, angle; 398 399 memcpy(matrix, data, sizeof(matrix)); 400 401 for (i = 0; i < 9; i++) 402 dmatrix[i] = matrix[i] / 65536.0; 403 404 // Extract scale factors. 405 scale_x = hypot(dmatrix[0], dmatrix[3]); 406 scale_y = hypot(dmatrix[1], dmatrix[4]); 407 408 // Select flips to make the main diagonal positive. 409 hflip = dmatrix[0] < 0.0; 410 vflip = dmatrix[4] < 0.0; 411 if (hflip) 412 scale_x = -scale_x; 413 if (vflip) 414 scale_y = -scale_y; 415 416 // Rescale. 417 for (i = 0; i < 9; i += 3) { 418 dmatrix[i] /= scale_x; 419 dmatrix[i + 1] /= scale_y; 420 } 421 422 // Extract rotation. 423 angle = atan2(dmatrix[3], dmatrix[0]); 424 425 if (!(angle >= -M_PI && angle <= M_PI) || 426 matrix[2] != 0.0 || matrix[5] != 0.0 || 427 matrix[6] != 0.0 || matrix[7] != 0.0) { 428 av_log(bsf, AV_LOG_WARNING, "Input display matrix is not " 429 "representable in H.264 parameters.\n"); 430 } else { 431 disp->hor_flip = hflip; 432 disp->ver_flip = vflip; 433 disp->anticlockwise_rotation = 434 (uint16_t)rint((angle >= 0.0 ? angle 435 : angle + 2 * M_PI) * 436 32768.0 / M_PI); 437 write = 1; 438 } 439 } 440 441 if (seek_point) { 442 if (!isnan(ctx->rotate)) { 443 disp->anticlockwise_rotation = 444 (uint16_t)rint((ctx->rotate >= 0.0 ? ctx->rotate 445 : ctx->rotate + 360.0) * 446 65536.0 / 360.0); 447 write = 1; 448 } 449 if (ctx->flip) { 450 disp->hor_flip = !!(ctx->flip & FLIP_HORIZONTAL); 451 disp->ver_flip = !!(ctx->flip & FLIP_VERTICAL); 452 write = 1; 453 } 454 } 455 456 if (write) { 457 disp->display_orientation_repetition_period = 1; 458 459 err = ff_cbs_sei_add_message(ctx->common.output, au, 1, 460 SEI_TYPE_DISPLAY_ORIENTATION, 461 disp, NULL); 462 if (err < 0) { 463 av_log(bsf, AV_LOG_ERROR, "Failed to add display orientation " 464 "SEI message to access unit.\n"); 465 return err; 466 } 467 } 468 } 469 470 return 0; 471} 472 473static int h264_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, 474 CodedBitstreamFragment *au) 475{ 476 H264MetadataContext *ctx = bsf->priv_data; 477 int err, i, has_sps, seek_point; 478 479 // If an AUD is present, it must be the first NAL unit. 480 if (au->nb_units && au->units[0].type == H264_NAL_AUD) { 481 if (ctx->aud == BSF_ELEMENT_REMOVE) 482 ff_cbs_delete_unit(au, 0); 483 } else { 484 if (pkt && ctx->aud == BSF_ELEMENT_INSERT) { 485 err = h264_metadata_insert_aud(bsf, au); 486 if (err < 0) 487 return err; 488 } 489 } 490 491 has_sps = 0; 492 for (i = 0; i < au->nb_units; i++) { 493 if (au->units[i].type == H264_NAL_SPS) { 494 err = h264_metadata_update_sps(bsf, au->units[i].content); 495 if (err < 0) 496 return err; 497 has_sps = 1; 498 } 499 } 500 501 if (pkt) { 502 // The current packet should be treated as a seek point for metadata 503 // insertion if any of: 504 // - It is the first packet in the stream. 505 // - It contains an SPS, indicating that a sequence might start here. 506 // - It is marked as containing a key frame. 507 seek_point = !ctx->done_first_au || has_sps || 508 (pkt->flags & AV_PKT_FLAG_KEY); 509 } else { 510 seek_point = 0; 511 } 512 513 if (ctx->sei_user_data && seek_point) { 514 err = ff_cbs_sei_add_message(ctx->common.output, au, 1, 515 SEI_TYPE_USER_DATA_UNREGISTERED, 516 &ctx->sei_user_data_payload, NULL); 517 if (err < 0) { 518 av_log(bsf, AV_LOG_ERROR, "Failed to add user data SEI " 519 "message to access unit.\n"); 520 return err; 521 } 522 } 523 524 if (ctx->delete_filler) { 525 for (i = au->nb_units - 1; i >= 0; i--) { 526 if (au->units[i].type == H264_NAL_FILLER_DATA) { 527 ff_cbs_delete_unit(au, i); 528 continue; 529 } 530 } 531 532 ff_cbs_sei_delete_message_type(ctx->common.output, au, 533 SEI_TYPE_FILLER_PAYLOAD); 534 } 535 536 if (pkt && ctx->display_orientation != BSF_ELEMENT_PASS) { 537 err = h264_metadata_handle_display_orientation(bsf, pkt, au, 538 seek_point); 539 if (err < 0) 540 return err; 541 } 542 543 if (pkt) 544 ctx->done_first_au = 1; 545 546 return 0; 547} 548 549static const CBSBSFType h264_metadata_type = { 550 .codec_id = AV_CODEC_ID_H264, 551 .fragment_name = "access unit", 552 .unit_name = "NAL unit", 553 .update_fragment = &h264_metadata_update_fragment, 554}; 555 556static int h264_metadata_init(AVBSFContext *bsf) 557{ 558 H264MetadataContext *ctx = bsf->priv_data; 559 560 if (ctx->sei_user_data) { 561 SEIRawUserDataUnregistered *udu = &ctx->sei_user_data_payload; 562 int i, j; 563 564 // Parse UUID. It must be a hex string of length 32, possibly 565 // containing '-'s between hex digits (which we ignore). 566 for (i = j = 0; j < 32 && i < 64 && ctx->sei_user_data[i]; i++) { 567 int c, v; 568 c = ctx->sei_user_data[i]; 569 if (c == '-') { 570 continue; 571 } else if (av_isxdigit(c)) { 572 c = av_tolower(c); 573 v = (c <= '9' ? c - '0' : c - 'a' + 10); 574 } else { 575 break; 576 } 577 if (j & 1) 578 udu->uuid_iso_iec_11578[j / 2] |= v; 579 else 580 udu->uuid_iso_iec_11578[j / 2] = v << 4; 581 ++j; 582 } 583 if (j == 32 && ctx->sei_user_data[i] == '+') { 584 udu->data = (uint8_t*)ctx->sei_user_data + i + 1; 585 udu->data_length = strlen(udu->data) + 1; 586 } else { 587 av_log(bsf, AV_LOG_ERROR, "Invalid user data: " 588 "must be \"UUID+string\".\n"); 589 return AVERROR(EINVAL); 590 } 591 } 592 593 return ff_cbs_bsf_generic_init(bsf, &h264_metadata_type); 594} 595 596#define OFFSET(x) offsetof(H264MetadataContext, x) 597#define FLAGS (AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_BSF_PARAM) 598static const AVOption h264_metadata_options[] = { 599 BSF_ELEMENT_OPTIONS_PIR("aud", "Access Unit Delimiter NAL units", 600 aud, FLAGS), 601 602 { "sample_aspect_ratio", "Set sample aspect ratio (table E-1)", 603 OFFSET(sample_aspect_ratio), AV_OPT_TYPE_RATIONAL, 604 { .dbl = 0.0 }, 0, 65535, FLAGS }, 605 606 { "overscan_appropriate_flag", "Set VUI overscan appropriate flag", 607 OFFSET(overscan_appropriate_flag), AV_OPT_TYPE_INT, 608 { .i64 = -1 }, -1, 1, FLAGS }, 609 610 { "video_format", "Set video format (table E-2)", 611 OFFSET(video_format), AV_OPT_TYPE_INT, 612 { .i64 = -1 }, -1, 7, FLAGS}, 613 { "video_full_range_flag", "Set video full range flag", 614 OFFSET(video_full_range_flag), AV_OPT_TYPE_INT, 615 { .i64 = -1 }, -1, 1, FLAGS }, 616 { "colour_primaries", "Set colour primaries (table E-3)", 617 OFFSET(colour_primaries), AV_OPT_TYPE_INT, 618 { .i64 = -1 }, -1, 255, FLAGS }, 619 { "transfer_characteristics", "Set transfer characteristics (table E-4)", 620 OFFSET(transfer_characteristics), AV_OPT_TYPE_INT, 621 { .i64 = -1 }, -1, 255, FLAGS }, 622 { "matrix_coefficients", "Set matrix coefficients (table E-5)", 623 OFFSET(matrix_coefficients), AV_OPT_TYPE_INT, 624 { .i64 = -1 }, -1, 255, FLAGS }, 625 626 { "chroma_sample_loc_type", "Set chroma sample location type (figure E-1)", 627 OFFSET(chroma_sample_loc_type), AV_OPT_TYPE_INT, 628 { .i64 = -1 }, -1, 5, FLAGS }, 629 630 { "tick_rate", "Set VUI tick rate (time_scale / num_units_in_tick)", 631 OFFSET(tick_rate), AV_OPT_TYPE_RATIONAL, 632 { .dbl = 0.0 }, 0, UINT_MAX, FLAGS }, 633 { "fixed_frame_rate_flag", "Set VUI fixed frame rate flag", 634 OFFSET(fixed_frame_rate_flag), AV_OPT_TYPE_INT, 635 { .i64 = -1 }, -1, 1, FLAGS }, 636 { "zero_new_constraint_set_flags", "Set constraint_set4_flag / constraint_set5_flag to zero", 637 OFFSET(zero_new_constraint_set_flags), AV_OPT_TYPE_BOOL, 638 { .i64 = 0 }, 0, 1, FLAGS }, 639 640 { "crop_left", "Set left border crop offset", 641 OFFSET(crop_left), AV_OPT_TYPE_INT, 642 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS }, 643 { "crop_right", "Set right border crop offset", 644 OFFSET(crop_right), AV_OPT_TYPE_INT, 645 { .i64 = -1 }, -1, H264_MAX_WIDTH, FLAGS }, 646 { "crop_top", "Set top border crop offset", 647 OFFSET(crop_top), AV_OPT_TYPE_INT, 648 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS }, 649 { "crop_bottom", "Set bottom border crop offset", 650 OFFSET(crop_bottom), AV_OPT_TYPE_INT, 651 { .i64 = -1 }, -1, H264_MAX_HEIGHT, FLAGS }, 652 653 { "sei_user_data", "Insert SEI user data (UUID+string)", 654 OFFSET(sei_user_data), AV_OPT_TYPE_STRING, { .str = NULL }, .flags = FLAGS }, 655 656 { "delete_filler", "Delete all filler (both NAL and SEI)", 657 OFFSET(delete_filler), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, FLAGS}, 658 659 BSF_ELEMENT_OPTIONS_PIRE("display_orientation", 660 "Display orientation SEI", 661 display_orientation, FLAGS), 662 663 { "rotate", "Set rotation in display orientation SEI (anticlockwise angle in degrees)", 664 OFFSET(rotate), AV_OPT_TYPE_DOUBLE, 665 { .dbl = NAN }, -360.0, +360.0, FLAGS }, 666 { "flip", "Set flip in display orientation SEI", 667 OFFSET(flip), AV_OPT_TYPE_FLAGS, 668 { .i64 = 0 }, 0, FLIP_HORIZONTAL | FLIP_VERTICAL, FLAGS, "flip" }, 669 { "horizontal", "Set hor_flip", 670 0, AV_OPT_TYPE_CONST, 671 { .i64 = FLIP_HORIZONTAL }, .flags = FLAGS, .unit = "flip" }, 672 { "vertical", "Set ver_flip", 673 0, AV_OPT_TYPE_CONST, 674 { .i64 = FLIP_VERTICAL }, .flags = FLAGS, .unit = "flip" }, 675 676 { "level", "Set level (table A-1)", 677 OFFSET(level), AV_OPT_TYPE_INT, 678 { .i64 = LEVEL_UNSET }, LEVEL_UNSET, 0xff, FLAGS, "level" }, 679 { "auto", "Attempt to guess level from stream properties", 680 0, AV_OPT_TYPE_CONST, 681 { .i64 = LEVEL_AUTO }, .flags = FLAGS, .unit = "level" }, 682#define LEVEL(name, value) name, NULL, 0, AV_OPT_TYPE_CONST, \ 683 { .i64 = value }, .flags = FLAGS, .unit = "level" 684 { LEVEL("1", 10) }, 685 { LEVEL("1b", 9) }, 686 { LEVEL("1.1", 11) }, 687 { LEVEL("1.2", 12) }, 688 { LEVEL("1.3", 13) }, 689 { LEVEL("2", 20) }, 690 { LEVEL("2.1", 21) }, 691 { LEVEL("2.2", 22) }, 692 { LEVEL("3", 30) }, 693 { LEVEL("3.1", 31) }, 694 { LEVEL("3.2", 32) }, 695 { LEVEL("4", 40) }, 696 { LEVEL("4.1", 41) }, 697 { LEVEL("4.2", 42) }, 698 { LEVEL("5", 50) }, 699 { LEVEL("5.1", 51) }, 700 { LEVEL("5.2", 52) }, 701 { LEVEL("6", 60) }, 702 { LEVEL("6.1", 61) }, 703 { LEVEL("6.2", 62) }, 704#undef LEVEL 705 706 { NULL } 707}; 708 709static const AVClass h264_metadata_class = { 710 .class_name = "h264_metadata_bsf", 711 .item_name = av_default_item_name, 712 .option = h264_metadata_options, 713 .version = LIBAVUTIL_VERSION_INT, 714}; 715 716static const enum AVCodecID h264_metadata_codec_ids[] = { 717 AV_CODEC_ID_H264, AV_CODEC_ID_NONE, 718}; 719 720const FFBitStreamFilter ff_h264_metadata_bsf = { 721 .p.name = "h264_metadata", 722 .p.codec_ids = h264_metadata_codec_ids, 723 .p.priv_class = &h264_metadata_class, 724 .priv_data_size = sizeof(H264MetadataContext), 725 .init = &h264_metadata_init, 726 .close = &ff_cbs_bsf_generic_close, 727 .filter = &ff_cbs_bsf_generic_filter, 728}; 729