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 19static int FUNC(rbsp_trailing_bits)(CodedBitstreamContext *ctx, RWContext *rw) 20{ 21 int err; 22 23 fixed(1, rbsp_stop_one_bit, 1); 24 while (byte_alignment(rw) != 0) 25 fixed(1, rbsp_alignment_zero_bit, 0); 26 27 return 0; 28} 29 30static int FUNC(nal_unit_header)(CodedBitstreamContext *ctx, RWContext *rw, 31 H265RawNALUnitHeader *current, 32 int expected_nal_unit_type) 33{ 34 int err; 35 36 fixed(1, forbidden_zero_bit, 0); 37 38 if (expected_nal_unit_type >= 0) 39 u(6, nal_unit_type, expected_nal_unit_type, 40 expected_nal_unit_type); 41 else 42 ub(6, nal_unit_type); 43 44 u(6, nuh_layer_id, 0, 62); 45 u(3, nuh_temporal_id_plus1, 1, 7); 46 47 return 0; 48} 49 50static int FUNC(byte_alignment)(CodedBitstreamContext *ctx, RWContext *rw) 51{ 52 int err; 53 54 fixed(1, alignment_bit_equal_to_one, 1); 55 while (byte_alignment(rw) != 0) 56 fixed(1, alignment_bit_equal_to_zero, 0); 57 58 return 0; 59} 60 61static int FUNC(extension_data)(CodedBitstreamContext *ctx, RWContext *rw, 62 H265RawExtensionData *current) 63{ 64 int err; 65 size_t k; 66#ifdef READ 67 GetBitContext start; 68 uint8_t bit; 69 start = *rw; 70 for (k = 0; cbs_h2645_read_more_rbsp_data(rw); k++) 71 skip_bits(rw, 1); 72 current->bit_length = k; 73 if (k > 0) { 74 *rw = start; 75 allocate(current->data, (current->bit_length + 7) / 8); 76 for (k = 0; k < current->bit_length; k++) { 77 xu(1, extension_data, bit, 0, 1, 0); 78 current->data[k / 8] |= bit << (7 - k % 8); 79 } 80 } 81#else 82 for (k = 0; k < current->bit_length; k++) 83 xu(1, extension_data, current->data[k / 8] >> (7 - k % 8) & 1, 0, 1, 0); 84#endif 85 return 0; 86} 87 88static int FUNC(profile_tier_level)(CodedBitstreamContext *ctx, RWContext *rw, 89 H265RawProfileTierLevel *current, 90 int profile_present_flag, 91 int max_num_sub_layers_minus1) 92{ 93 int err, i, j; 94 95 if (profile_present_flag) { 96 u(2, general_profile_space, 0, 0); 97 flag(general_tier_flag); 98 ub(5, general_profile_idc); 99 100 for (j = 0; j < 32; j++) 101 flags(general_profile_compatibility_flag[j], 1, j); 102 103 flag(general_progressive_source_flag); 104 flag(general_interlaced_source_flag); 105 flag(general_non_packed_constraint_flag); 106 flag(general_frame_only_constraint_flag); 107 108#define profile_compatible(x) (current->general_profile_idc == (x) || \ 109 current->general_profile_compatibility_flag[x]) 110 if (profile_compatible(4) || profile_compatible(5) || 111 profile_compatible(6) || profile_compatible(7) || 112 profile_compatible(8) || profile_compatible(9) || 113 profile_compatible(10) || profile_compatible(11)) { 114 flag(general_max_12bit_constraint_flag); 115 flag(general_max_10bit_constraint_flag); 116 flag(general_max_8bit_constraint_flag); 117 flag(general_max_422chroma_constraint_flag); 118 flag(general_max_420chroma_constraint_flag); 119 flag(general_max_monochrome_constraint_flag); 120 flag(general_intra_constraint_flag); 121 flag(general_one_picture_only_constraint_flag); 122 flag(general_lower_bit_rate_constraint_flag); 123 124 if (profile_compatible(5) || profile_compatible(9) || 125 profile_compatible(10) || profile_compatible(11)) { 126 flag(general_max_14bit_constraint_flag); 127 fixed(24, general_reserved_zero_33bits, 0); 128 fixed( 9, general_reserved_zero_33bits, 0); 129 } else { 130 fixed(24, general_reserved_zero_34bits, 0); 131 fixed(10, general_reserved_zero_34bits, 0); 132 } 133 } else if (profile_compatible(2)) { 134 fixed(7, general_reserved_zero_7bits, 0); 135 flag(general_one_picture_only_constraint_flag); 136 fixed(24, general_reserved_zero_35bits, 0); 137 fixed(11, general_reserved_zero_35bits, 0); 138 } else { 139 fixed(24, general_reserved_zero_43bits, 0); 140 fixed(19, general_reserved_zero_43bits, 0); 141 } 142 143 if (profile_compatible(1) || profile_compatible(2) || 144 profile_compatible(3) || profile_compatible(4) || 145 profile_compatible(5) || profile_compatible(9) || 146 profile_compatible(11)) { 147 flag(general_inbld_flag); 148 } else { 149 fixed(1, general_reserved_zero_bit, 0); 150 } 151#undef profile_compatible 152 } 153 154 ub(8, general_level_idc); 155 156 for (i = 0; i < max_num_sub_layers_minus1; i++) { 157 flags(sub_layer_profile_present_flag[i], 1, i); 158 flags(sub_layer_level_present_flag[i], 1, i); 159 } 160 161 if (max_num_sub_layers_minus1 > 0) { 162 for (i = max_num_sub_layers_minus1; i < 8; i++) 163 fixed(2, reserved_zero_2bits, 0); 164 } 165 166 for (i = 0; i < max_num_sub_layers_minus1; i++) { 167 if (current->sub_layer_profile_present_flag[i]) { 168 us(2, sub_layer_profile_space[i], 0, 0, 1, i); 169 flags(sub_layer_tier_flag[i], 1, i); 170 ubs(5, sub_layer_profile_idc[i], 1, i); 171 172 for (j = 0; j < 32; j++) 173 flags(sub_layer_profile_compatibility_flag[i][j], 2, i, j); 174 175 flags(sub_layer_progressive_source_flag[i], 1, i); 176 flags(sub_layer_interlaced_source_flag[i], 1, i); 177 flags(sub_layer_non_packed_constraint_flag[i], 1, i); 178 flags(sub_layer_frame_only_constraint_flag[i], 1, i); 179 180#define profile_compatible(x) (current->sub_layer_profile_idc[i] == (x) || \ 181 current->sub_layer_profile_compatibility_flag[i][x]) 182 if (profile_compatible(4) || profile_compatible(5) || 183 profile_compatible(6) || profile_compatible(7) || 184 profile_compatible(8) || profile_compatible(9) || 185 profile_compatible(10) || profile_compatible(11)) { 186 flags(sub_layer_max_12bit_constraint_flag[i], 1, i); 187 flags(sub_layer_max_10bit_constraint_flag[i], 1, i); 188 flags(sub_layer_max_8bit_constraint_flag[i], 1, i); 189 flags(sub_layer_max_422chroma_constraint_flag[i], 1, i); 190 flags(sub_layer_max_420chroma_constraint_flag[i], 1, i); 191 flags(sub_layer_max_monochrome_constraint_flag[i], 1, i); 192 flags(sub_layer_intra_constraint_flag[i], 1, i); 193 flags(sub_layer_one_picture_only_constraint_flag[i], 1, i); 194 flags(sub_layer_lower_bit_rate_constraint_flag[i], 1, i); 195 196 if (profile_compatible(5) || profile_compatible(9) || 197 profile_compatible(10) || profile_compatible(11)) { 198 flags(sub_layer_max_14bit_constraint_flag[i], 1, i); 199 fixed(24, sub_layer_reserved_zero_33bits, 0); 200 fixed( 9, sub_layer_reserved_zero_33bits, 0); 201 } else { 202 fixed(24, sub_layer_reserved_zero_34bits, 0); 203 fixed(10, sub_layer_reserved_zero_34bits, 0); 204 } 205 } else if (profile_compatible(2)) { 206 fixed(7, sub_layer_reserved_zero_7bits, 0); 207 flags(sub_layer_one_picture_only_constraint_flag[i], 1, i); 208 fixed(24, sub_layer_reserved_zero_43bits, 0); 209 fixed(11, sub_layer_reserved_zero_43bits, 0); 210 } else { 211 fixed(24, sub_layer_reserved_zero_43bits, 0); 212 fixed(19, sub_layer_reserved_zero_43bits, 0); 213 } 214 215 if (profile_compatible(1) || profile_compatible(2) || 216 profile_compatible(3) || profile_compatible(4) || 217 profile_compatible(5) || profile_compatible(9) || 218 profile_compatible(11)) { 219 flags(sub_layer_inbld_flag[i], 1, i); 220 } else { 221 fixed(1, sub_layer_reserved_zero_bit, 0); 222 } 223#undef profile_compatible 224 } 225 if (current->sub_layer_level_present_flag[i]) 226 ubs(8, sub_layer_level_idc[i], 1, i); 227 } 228 229 return 0; 230} 231 232static int FUNC(sub_layer_hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, 233 H265RawHRDParameters *hrd, 234 int nal, int sub_layer_id) 235{ 236 H265RawSubLayerHRDParameters *current; 237 int err, i; 238 239 if (nal) 240 current = &hrd->nal_sub_layer_hrd_parameters[sub_layer_id]; 241 else 242 current = &hrd->vcl_sub_layer_hrd_parameters[sub_layer_id]; 243 244 for (i = 0; i <= hrd->cpb_cnt_minus1[sub_layer_id]; i++) { 245 ues(bit_rate_value_minus1[i], 0, UINT32_MAX - 1, 1, i); 246 ues(cpb_size_value_minus1[i], 0, UINT32_MAX - 1, 1, i); 247 if (hrd->sub_pic_hrd_params_present_flag) { 248 ues(cpb_size_du_value_minus1[i], 0, UINT32_MAX - 1, 1, i); 249 ues(bit_rate_du_value_minus1[i], 0, UINT32_MAX - 1, 1, i); 250 } 251 flags(cbr_flag[i], 1, i); 252 } 253 254 return 0; 255} 256 257static int FUNC(hrd_parameters)(CodedBitstreamContext *ctx, RWContext *rw, 258 H265RawHRDParameters *current, int common_inf_present_flag, 259 int max_num_sub_layers_minus1) 260{ 261 int err, i; 262 263 if (common_inf_present_flag) { 264 flag(nal_hrd_parameters_present_flag); 265 flag(vcl_hrd_parameters_present_flag); 266 267 if (current->nal_hrd_parameters_present_flag || 268 current->vcl_hrd_parameters_present_flag) { 269 flag(sub_pic_hrd_params_present_flag); 270 if (current->sub_pic_hrd_params_present_flag) { 271 ub(8, tick_divisor_minus2); 272 ub(5, du_cpb_removal_delay_increment_length_minus1); 273 flag(sub_pic_cpb_params_in_pic_timing_sei_flag); 274 ub(5, dpb_output_delay_du_length_minus1); 275 } 276 277 ub(4, bit_rate_scale); 278 ub(4, cpb_size_scale); 279 if (current->sub_pic_hrd_params_present_flag) 280 ub(4, cpb_size_du_scale); 281 282 ub(5, initial_cpb_removal_delay_length_minus1); 283 ub(5, au_cpb_removal_delay_length_minus1); 284 ub(5, dpb_output_delay_length_minus1); 285 } else { 286 infer(sub_pic_hrd_params_present_flag, 0); 287 288 infer(initial_cpb_removal_delay_length_minus1, 23); 289 infer(au_cpb_removal_delay_length_minus1, 23); 290 infer(dpb_output_delay_length_minus1, 23); 291 } 292 } 293 294 for (i = 0; i <= max_num_sub_layers_minus1; i++) { 295 flags(fixed_pic_rate_general_flag[i], 1, i); 296 297 if (!current->fixed_pic_rate_general_flag[i]) 298 flags(fixed_pic_rate_within_cvs_flag[i], 1, i); 299 else 300 infer(fixed_pic_rate_within_cvs_flag[i], 1); 301 302 if (current->fixed_pic_rate_within_cvs_flag[i]) { 303 ues(elemental_duration_in_tc_minus1[i], 0, 2047, 1, i); 304 infer(low_delay_hrd_flag[i], 0); 305 } else 306 flags(low_delay_hrd_flag[i], 1, i); 307 308 if (!current->low_delay_hrd_flag[i]) 309 ues(cpb_cnt_minus1[i], 0, 31, 1, i); 310 else 311 infer(cpb_cnt_minus1[i], 0); 312 313 if (current->nal_hrd_parameters_present_flag) 314 CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 0, i)); 315 if (current->vcl_hrd_parameters_present_flag) 316 CHECK(FUNC(sub_layer_hrd_parameters)(ctx, rw, current, 1, i)); 317 } 318 319 return 0; 320} 321 322static int FUNC(vui_parameters)(CodedBitstreamContext *ctx, RWContext *rw, 323 H265RawVUI *current, const H265RawSPS *sps) 324{ 325 int err; 326 327 flag(aspect_ratio_info_present_flag); 328 if (current->aspect_ratio_info_present_flag) { 329 ub(8, aspect_ratio_idc); 330 if (current->aspect_ratio_idc == 255) { 331 ub(16, sar_width); 332 ub(16, sar_height); 333 } 334 } else { 335 infer(aspect_ratio_idc, 0); 336 } 337 338 flag(overscan_info_present_flag); 339 if (current->overscan_info_present_flag) 340 flag(overscan_appropriate_flag); 341 342 flag(video_signal_type_present_flag); 343 if (current->video_signal_type_present_flag) { 344 ub(3, video_format); 345 flag(video_full_range_flag); 346 flag(colour_description_present_flag); 347 if (current->colour_description_present_flag) { 348 ub(8, colour_primaries); 349 ub(8, transfer_characteristics); 350 ub(8, matrix_coefficients); 351 } else { 352 infer(colour_primaries, 2); 353 infer(transfer_characteristics, 2); 354 infer(matrix_coefficients, 2); 355 } 356 } else { 357 infer(video_format, 5); 358 infer(video_full_range_flag, 0); 359 infer(colour_primaries, 2); 360 infer(transfer_characteristics, 2); 361 infer(matrix_coefficients, 2); 362 } 363 364 flag(chroma_loc_info_present_flag); 365 if (current->chroma_loc_info_present_flag) { 366 ue(chroma_sample_loc_type_top_field, 0, 5); 367 ue(chroma_sample_loc_type_bottom_field, 0, 5); 368 } else { 369 infer(chroma_sample_loc_type_top_field, 0); 370 infer(chroma_sample_loc_type_bottom_field, 0); 371 } 372 373 flag(neutral_chroma_indication_flag); 374 flag(field_seq_flag); 375 flag(frame_field_info_present_flag); 376 377 flag(default_display_window_flag); 378 if (current->default_display_window_flag) { 379 ue(def_disp_win_left_offset, 0, 16384); 380 ue(def_disp_win_right_offset, 0, 16384); 381 ue(def_disp_win_top_offset, 0, 16384); 382 ue(def_disp_win_bottom_offset, 0, 16384); 383 } 384 385 flag(vui_timing_info_present_flag); 386 if (current->vui_timing_info_present_flag) { 387 u(32, vui_num_units_in_tick, 1, UINT32_MAX); 388 u(32, vui_time_scale, 1, UINT32_MAX); 389 flag(vui_poc_proportional_to_timing_flag); 390 if (current->vui_poc_proportional_to_timing_flag) 391 ue(vui_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1); 392 393 flag(vui_hrd_parameters_present_flag); 394 if (current->vui_hrd_parameters_present_flag) { 395 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters, 396 1, sps->sps_max_sub_layers_minus1)); 397 } 398 } 399 400 flag(bitstream_restriction_flag); 401 if (current->bitstream_restriction_flag) { 402 flag(tiles_fixed_structure_flag); 403 flag(motion_vectors_over_pic_boundaries_flag); 404 flag(restricted_ref_pic_lists_flag); 405 ue(min_spatial_segmentation_idc, 0, 4095); 406 ue(max_bytes_per_pic_denom, 0, 16); 407 ue(max_bits_per_min_cu_denom, 0, 16); 408 ue(log2_max_mv_length_horizontal, 0, 16); 409 ue(log2_max_mv_length_vertical, 0, 16); 410 } else { 411 infer(tiles_fixed_structure_flag, 0); 412 infer(motion_vectors_over_pic_boundaries_flag, 1); 413 infer(min_spatial_segmentation_idc, 0); 414 infer(max_bytes_per_pic_denom, 2); 415 infer(max_bits_per_min_cu_denom, 1); 416 infer(log2_max_mv_length_horizontal, 15); 417 infer(log2_max_mv_length_vertical, 15); 418 } 419 420 return 0; 421} 422 423static int FUNC(vps)(CodedBitstreamContext *ctx, RWContext *rw, 424 H265RawVPS *current) 425{ 426 int err, i, j; 427 428 HEADER("Video Parameter Set"); 429 430 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_VPS)); 431 432 ub(4, vps_video_parameter_set_id); 433 434 flag(vps_base_layer_internal_flag); 435 flag(vps_base_layer_available_flag); 436 u(6, vps_max_layers_minus1, 0, HEVC_MAX_LAYERS - 1); 437 u(3, vps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1); 438 flag(vps_temporal_id_nesting_flag); 439 440 if (current->vps_max_sub_layers_minus1 == 0 && 441 current->vps_temporal_id_nesting_flag != 1) { 442 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " 443 "vps_temporal_id_nesting_flag must be 1 if " 444 "vps_max_sub_layers_minus1 is 0.\n"); 445 return AVERROR_INVALIDDATA; 446 } 447 448 fixed(16, vps_reserved_0xffff_16bits, 0xffff); 449 450 CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level, 451 1, current->vps_max_sub_layers_minus1)); 452 453 flag(vps_sub_layer_ordering_info_present_flag); 454 for (i = (current->vps_sub_layer_ordering_info_present_flag ? 455 0 : current->vps_max_sub_layers_minus1); 456 i <= current->vps_max_sub_layers_minus1; i++) { 457 ues(vps_max_dec_pic_buffering_minus1[i], 458 0, HEVC_MAX_DPB_SIZE - 1, 1, i); 459 ues(vps_max_num_reorder_pics[i], 460 0, current->vps_max_dec_pic_buffering_minus1[i], 1, i); 461 ues(vps_max_latency_increase_plus1[i], 462 0, UINT32_MAX - 1, 1, i); 463 } 464 if (!current->vps_sub_layer_ordering_info_present_flag) { 465 for (i = 0; i < current->vps_max_sub_layers_minus1; i++) { 466 infer(vps_max_dec_pic_buffering_minus1[i], 467 current->vps_max_dec_pic_buffering_minus1[current->vps_max_sub_layers_minus1]); 468 infer(vps_max_num_reorder_pics[i], 469 current->vps_max_num_reorder_pics[current->vps_max_sub_layers_minus1]); 470 infer(vps_max_latency_increase_plus1[i], 471 current->vps_max_latency_increase_plus1[current->vps_max_sub_layers_minus1]); 472 } 473 } 474 475 u(6, vps_max_layer_id, 0, HEVC_MAX_LAYERS - 1); 476 ue(vps_num_layer_sets_minus1, 0, HEVC_MAX_LAYER_SETS - 1); 477 for (i = 1; i <= current->vps_num_layer_sets_minus1; i++) { 478 for (j = 0; j <= current->vps_max_layer_id; j++) 479 flags(layer_id_included_flag[i][j], 2, i, j); 480 } 481 for (j = 0; j <= current->vps_max_layer_id; j++) 482 infer(layer_id_included_flag[0][j], j == 0); 483 484 flag(vps_timing_info_present_flag); 485 if (current->vps_timing_info_present_flag) { 486 u(32, vps_num_units_in_tick, 1, UINT32_MAX); 487 u(32, vps_time_scale, 1, UINT32_MAX); 488 flag(vps_poc_proportional_to_timing_flag); 489 if (current->vps_poc_proportional_to_timing_flag) 490 ue(vps_num_ticks_poc_diff_one_minus1, 0, UINT32_MAX - 1); 491 ue(vps_num_hrd_parameters, 0, current->vps_num_layer_sets_minus1 + 1); 492 for (i = 0; i < current->vps_num_hrd_parameters; i++) { 493 ues(hrd_layer_set_idx[i], 494 current->vps_base_layer_internal_flag ? 0 : 1, 495 current->vps_num_layer_sets_minus1, 1, i); 496 if (i > 0) 497 flags(cprms_present_flag[i], 1, i); 498 else 499 infer(cprms_present_flag[0], 1); 500 501 CHECK(FUNC(hrd_parameters)(ctx, rw, ¤t->hrd_parameters[i], 502 current->cprms_present_flag[i], 503 current->vps_max_sub_layers_minus1)); 504 } 505 } 506 507 flag(vps_extension_flag); 508 if (current->vps_extension_flag) 509 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); 510 511 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); 512 513 return 0; 514} 515 516static int FUNC(st_ref_pic_set)(CodedBitstreamContext *ctx, RWContext *rw, 517 H265RawSTRefPicSet *current, int st_rps_idx, 518 const H265RawSPS *sps) 519{ 520 int err, i, j; 521 522 if (st_rps_idx != 0) 523 flag(inter_ref_pic_set_prediction_flag); 524 else 525 infer(inter_ref_pic_set_prediction_flag, 0); 526 527 if (current->inter_ref_pic_set_prediction_flag) { 528 unsigned int ref_rps_idx, num_delta_pocs, num_ref_pics; 529 const H265RawSTRefPicSet *ref; 530 int delta_rps, d_poc; 531 int ref_delta_poc_s0[HEVC_MAX_REFS], ref_delta_poc_s1[HEVC_MAX_REFS]; 532 int delta_poc_s0[HEVC_MAX_REFS], delta_poc_s1[HEVC_MAX_REFS]; 533 uint8_t used_by_curr_pic_s0[HEVC_MAX_REFS], 534 used_by_curr_pic_s1[HEVC_MAX_REFS]; 535 536 if (st_rps_idx == sps->num_short_term_ref_pic_sets) 537 ue(delta_idx_minus1, 0, st_rps_idx - 1); 538 else 539 infer(delta_idx_minus1, 0); 540 541 ref_rps_idx = st_rps_idx - (current->delta_idx_minus1 + 1); 542 ref = &sps->st_ref_pic_set[ref_rps_idx]; 543 num_delta_pocs = ref->num_negative_pics + ref->num_positive_pics; 544 av_assert0(num_delta_pocs < HEVC_MAX_DPB_SIZE); 545 546 flag(delta_rps_sign); 547 ue(abs_delta_rps_minus1, 0, INT16_MAX); 548 delta_rps = (1 - 2 * current->delta_rps_sign) * 549 (current->abs_delta_rps_minus1 + 1); 550 551 num_ref_pics = 0; 552 for (j = 0; j <= num_delta_pocs; j++) { 553 flags(used_by_curr_pic_flag[j], 1, j); 554 if (!current->used_by_curr_pic_flag[j]) 555 flags(use_delta_flag[j], 1, j); 556 else 557 infer(use_delta_flag[j], 1); 558 if (current->use_delta_flag[j]) 559 ++num_ref_pics; 560 } 561 if (num_ref_pics >= HEVC_MAX_DPB_SIZE) { 562 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " 563 "short-term ref pic set %d " 564 "contains too many pictures.\n", st_rps_idx); 565 return AVERROR_INVALIDDATA; 566 } 567 568 // Since the stored form of an RPS here is actually the delta-step 569 // form used when inter_ref_pic_set_prediction_flag is not set, we 570 // need to reconstruct that here in order to be able to refer to 571 // the RPS later (which is required for parsing, because we don't 572 // even know what syntax elements appear without it). Therefore, 573 // this code takes the delta-step form of the reference set, turns 574 // it into the delta-array form, applies the prediction process of 575 // 7.4.8, converts the result back to the delta-step form, and 576 // stores that as the current set for future use. Note that the 577 // inferences here mean that writers using prediction will need 578 // to fill in the delta-step values correctly as well - since the 579 // whole RPS prediction process is somewhat overly sophisticated, 580 // this hopefully forms a useful check for them to ensure their 581 // predicted form actually matches what was intended rather than 582 // an onerous additional requirement. 583 584 d_poc = 0; 585 for (i = 0; i < ref->num_negative_pics; i++) { 586 d_poc -= ref->delta_poc_s0_minus1[i] + 1; 587 ref_delta_poc_s0[i] = d_poc; 588 } 589 d_poc = 0; 590 for (i = 0; i < ref->num_positive_pics; i++) { 591 d_poc += ref->delta_poc_s1_minus1[i] + 1; 592 ref_delta_poc_s1[i] = d_poc; 593 } 594 595 i = 0; 596 for (j = ref->num_positive_pics - 1; j >= 0; j--) { 597 d_poc = ref_delta_poc_s1[j] + delta_rps; 598 if (d_poc < 0 && current->use_delta_flag[ref->num_negative_pics + j]) { 599 delta_poc_s0[i] = d_poc; 600 used_by_curr_pic_s0[i++] = 601 current->used_by_curr_pic_flag[ref->num_negative_pics + j]; 602 } 603 } 604 if (delta_rps < 0 && current->use_delta_flag[num_delta_pocs]) { 605 delta_poc_s0[i] = delta_rps; 606 used_by_curr_pic_s0[i++] = 607 current->used_by_curr_pic_flag[num_delta_pocs]; 608 } 609 for (j = 0; j < ref->num_negative_pics; j++) { 610 d_poc = ref_delta_poc_s0[j] + delta_rps; 611 if (d_poc < 0 && current->use_delta_flag[j]) { 612 delta_poc_s0[i] = d_poc; 613 used_by_curr_pic_s0[i++] = current->used_by_curr_pic_flag[j]; 614 } 615 } 616 617 infer(num_negative_pics, i); 618 for (i = 0; i < current->num_negative_pics; i++) { 619 infer(delta_poc_s0_minus1[i], 620 -(delta_poc_s0[i] - (i == 0 ? 0 : delta_poc_s0[i - 1])) - 1); 621 infer(used_by_curr_pic_s0_flag[i], used_by_curr_pic_s0[i]); 622 } 623 624 i = 0; 625 for (j = ref->num_negative_pics - 1; j >= 0; j--) { 626 d_poc = ref_delta_poc_s0[j] + delta_rps; 627 if (d_poc > 0 && current->use_delta_flag[j]) { 628 delta_poc_s1[i] = d_poc; 629 used_by_curr_pic_s1[i++] = current->used_by_curr_pic_flag[j]; 630 } 631 } 632 if (delta_rps > 0 && current->use_delta_flag[num_delta_pocs]) { 633 delta_poc_s1[i] = delta_rps; 634 used_by_curr_pic_s1[i++] = 635 current->used_by_curr_pic_flag[num_delta_pocs]; 636 } 637 for (j = 0; j < ref->num_positive_pics; j++) { 638 d_poc = ref_delta_poc_s1[j] + delta_rps; 639 if (d_poc > 0 && current->use_delta_flag[ref->num_negative_pics + j]) { 640 delta_poc_s1[i] = d_poc; 641 used_by_curr_pic_s1[i++] = 642 current->used_by_curr_pic_flag[ref->num_negative_pics + j]; 643 } 644 } 645 646 infer(num_positive_pics, i); 647 for (i = 0; i < current->num_positive_pics; i++) { 648 infer(delta_poc_s1_minus1[i], 649 delta_poc_s1[i] - (i == 0 ? 0 : delta_poc_s1[i - 1]) - 1); 650 infer(used_by_curr_pic_s1_flag[i], used_by_curr_pic_s1[i]); 651 } 652 653 } else { 654 ue(num_negative_pics, 0, 15); 655 ue(num_positive_pics, 0, 15 - current->num_negative_pics); 656 657 for (i = 0; i < current->num_negative_pics; i++) { 658 ues(delta_poc_s0_minus1[i], 0, INT16_MAX, 1, i); 659 flags(used_by_curr_pic_s0_flag[i], 1, i); 660 } 661 662 for (i = 0; i < current->num_positive_pics; i++) { 663 ues(delta_poc_s1_minus1[i], 0, INT16_MAX, 1, i); 664 flags(used_by_curr_pic_s1_flag[i], 1, i); 665 } 666 } 667 668 return 0; 669} 670 671static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw, 672 H265RawScalingList *current) 673{ 674 int sizeId, matrixId; 675 int err, n, i; 676 677 for (sizeId = 0; sizeId < 4; sizeId++) { 678 for (matrixId = 0; matrixId < 6; matrixId += (sizeId == 3 ? 3 : 1)) { 679 flags(scaling_list_pred_mode_flag[sizeId][matrixId], 680 2, sizeId, matrixId); 681 if (!current->scaling_list_pred_mode_flag[sizeId][matrixId]) { 682 ues(scaling_list_pred_matrix_id_delta[sizeId][matrixId], 683 0, sizeId == 3 ? matrixId / 3 : matrixId, 684 2, sizeId, matrixId); 685 } else { 686 n = FFMIN(64, 1 << (4 + (sizeId << 1))); 687 if (sizeId > 1) { 688 ses(scaling_list_dc_coef_minus8[sizeId - 2][matrixId], -7, +247, 689 2, sizeId - 2, matrixId); 690 } 691 for (i = 0; i < n; i++) { 692 ses(scaling_list_delta_coeff[sizeId][matrixId][i], 693 -128, +127, 3, sizeId, matrixId, i); 694 } 695 } 696 } 697 } 698 699 return 0; 700} 701 702static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, 703 H265RawSPS *current) 704{ 705 int err; 706 707 flag(transform_skip_rotation_enabled_flag); 708 flag(transform_skip_context_enabled_flag); 709 flag(implicit_rdpcm_enabled_flag); 710 flag(explicit_rdpcm_enabled_flag); 711 flag(extended_precision_processing_flag); 712 flag(intra_smoothing_disabled_flag); 713 flag(high_precision_offsets_enabled_flag); 714 flag(persistent_rice_adaptation_enabled_flag); 715 flag(cabac_bypass_alignment_enabled_flag); 716 717 return 0; 718} 719 720static int FUNC(sps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, 721 H265RawSPS *current) 722{ 723 int err, comp, i; 724 725 flag(sps_curr_pic_ref_enabled_flag); 726 727 flag(palette_mode_enabled_flag); 728 if (current->palette_mode_enabled_flag) { 729 ue(palette_max_size, 0, 64); 730 ue(delta_palette_max_predictor_size, 0, 128); 731 732 flag(sps_palette_predictor_initializer_present_flag); 733 if (current->sps_palette_predictor_initializer_present_flag) { 734 ue(sps_num_palette_predictor_initializer_minus1, 0, 127); 735 for (comp = 0; comp < (current->chroma_format_idc ? 3 : 1); comp++) { 736 int bit_depth = comp == 0 ? current->bit_depth_luma_minus8 + 8 737 : current->bit_depth_chroma_minus8 + 8; 738 for (i = 0; i <= current->sps_num_palette_predictor_initializer_minus1; i++) 739 ubs(bit_depth, sps_palette_predictor_initializers[comp][i], 2, comp, i); 740 } 741 } 742 } 743 744 u(2, motion_vector_resolution_control_idc, 0, 2); 745 flag(intra_boundary_filtering_disable_flag); 746 747 return 0; 748} 749 750static int FUNC(vui_parameters_default)(CodedBitstreamContext *ctx, 751 RWContext *rw, H265RawVUI *current, 752 H265RawSPS *sps) 753{ 754 infer(aspect_ratio_idc, 0); 755 756 infer(video_format, 5); 757 infer(video_full_range_flag, 0); 758 infer(colour_primaries, 2); 759 infer(transfer_characteristics, 2); 760 infer(matrix_coefficients, 2); 761 762 infer(chroma_sample_loc_type_top_field, 0); 763 infer(chroma_sample_loc_type_bottom_field, 0); 764 765 infer(tiles_fixed_structure_flag, 0); 766 infer(motion_vectors_over_pic_boundaries_flag, 1); 767 infer(min_spatial_segmentation_idc, 0); 768 infer(max_bytes_per_pic_denom, 2); 769 infer(max_bits_per_min_cu_denom, 1); 770 infer(log2_max_mv_length_horizontal, 15); 771 infer(log2_max_mv_length_vertical, 15); 772 773 return 0; 774} 775 776static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, 777 H265RawSPS *current) 778{ 779 CodedBitstreamH265Context *h265 = ctx->priv_data; 780 const H265RawVPS *vps; 781 int err, i; 782 unsigned int min_cb_log2_size_y, ctb_log2_size_y, 783 min_cb_size_y, min_tb_log2_size_y; 784 785 HEADER("Sequence Parameter Set"); 786 787 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_SPS)); 788 789 ub(4, sps_video_parameter_set_id); 790 h265->active_vps = vps = h265->vps[current->sps_video_parameter_set_id]; 791 792 u(3, sps_max_sub_layers_minus1, 0, HEVC_MAX_SUB_LAYERS - 1); 793 flag(sps_temporal_id_nesting_flag); 794 if (vps) { 795 if (vps->vps_max_sub_layers_minus1 > current->sps_max_sub_layers_minus1) { 796 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " 797 "sps_max_sub_layers_minus1 (%d) must be less than or equal to " 798 "vps_max_sub_layers_minus1 (%d).\n", 799 vps->vps_max_sub_layers_minus1, 800 current->sps_max_sub_layers_minus1); 801 return AVERROR_INVALIDDATA; 802 } 803 if (vps->vps_temporal_id_nesting_flag && 804 !current->sps_temporal_id_nesting_flag) { 805 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " 806 "sps_temporal_id_nesting_flag must be 1 if " 807 "vps_temporal_id_nesting_flag is 1.\n"); 808 return AVERROR_INVALIDDATA; 809 } 810 } 811 812 CHECK(FUNC(profile_tier_level)(ctx, rw, ¤t->profile_tier_level, 813 1, current->sps_max_sub_layers_minus1)); 814 815 ue(sps_seq_parameter_set_id, 0, 15); 816 817 ue(chroma_format_idc, 0, 3); 818 if (current->chroma_format_idc == 3) 819 flag(separate_colour_plane_flag); 820 else 821 infer(separate_colour_plane_flag, 0); 822 823 ue(pic_width_in_luma_samples, 1, HEVC_MAX_WIDTH); 824 ue(pic_height_in_luma_samples, 1, HEVC_MAX_HEIGHT); 825 826 flag(conformance_window_flag); 827 if (current->conformance_window_flag) { 828 ue(conf_win_left_offset, 0, current->pic_width_in_luma_samples); 829 ue(conf_win_right_offset, 0, current->pic_width_in_luma_samples); 830 ue(conf_win_top_offset, 0, current->pic_height_in_luma_samples); 831 ue(conf_win_bottom_offset, 0, current->pic_height_in_luma_samples); 832 } else { 833 infer(conf_win_left_offset, 0); 834 infer(conf_win_right_offset, 0); 835 infer(conf_win_top_offset, 0); 836 infer(conf_win_bottom_offset, 0); 837 } 838 839 ue(bit_depth_luma_minus8, 0, 8); 840 ue(bit_depth_chroma_minus8, 0, 8); 841 842 ue(log2_max_pic_order_cnt_lsb_minus4, 0, 12); 843 844 flag(sps_sub_layer_ordering_info_present_flag); 845 for (i = (current->sps_sub_layer_ordering_info_present_flag ? 846 0 : current->sps_max_sub_layers_minus1); 847 i <= current->sps_max_sub_layers_minus1; i++) { 848 ues(sps_max_dec_pic_buffering_minus1[i], 849 0, HEVC_MAX_DPB_SIZE - 1, 1, i); 850 ues(sps_max_num_reorder_pics[i], 851 0, current->sps_max_dec_pic_buffering_minus1[i], 1, i); 852 ues(sps_max_latency_increase_plus1[i], 853 0, UINT32_MAX - 1, 1, i); 854 } 855 if (!current->sps_sub_layer_ordering_info_present_flag) { 856 for (i = 0; i < current->sps_max_sub_layers_minus1; i++) { 857 infer(sps_max_dec_pic_buffering_minus1[i], 858 current->sps_max_dec_pic_buffering_minus1[current->sps_max_sub_layers_minus1]); 859 infer(sps_max_num_reorder_pics[i], 860 current->sps_max_num_reorder_pics[current->sps_max_sub_layers_minus1]); 861 infer(sps_max_latency_increase_plus1[i], 862 current->sps_max_latency_increase_plus1[current->sps_max_sub_layers_minus1]); 863 } 864 } 865 866 ue(log2_min_luma_coding_block_size_minus3, 0, 3); 867 min_cb_log2_size_y = current->log2_min_luma_coding_block_size_minus3 + 3; 868 869 ue(log2_diff_max_min_luma_coding_block_size, 0, 3); 870 ctb_log2_size_y = min_cb_log2_size_y + 871 current->log2_diff_max_min_luma_coding_block_size; 872 873 min_cb_size_y = 1 << min_cb_log2_size_y; 874 if (current->pic_width_in_luma_samples % min_cb_size_y || 875 current->pic_height_in_luma_samples % min_cb_size_y) { 876 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid dimensions: %ux%u not divisible " 877 "by MinCbSizeY = %u.\n", current->pic_width_in_luma_samples, 878 current->pic_height_in_luma_samples, min_cb_size_y); 879 return AVERROR_INVALIDDATA; 880 } 881 882 ue(log2_min_luma_transform_block_size_minus2, 0, min_cb_log2_size_y - 3); 883 min_tb_log2_size_y = current->log2_min_luma_transform_block_size_minus2 + 2; 884 885 ue(log2_diff_max_min_luma_transform_block_size, 886 0, FFMIN(ctb_log2_size_y, 5) - min_tb_log2_size_y); 887 888 ue(max_transform_hierarchy_depth_inter, 889 0, ctb_log2_size_y - min_tb_log2_size_y); 890 ue(max_transform_hierarchy_depth_intra, 891 0, ctb_log2_size_y - min_tb_log2_size_y); 892 893 flag(scaling_list_enabled_flag); 894 if (current->scaling_list_enabled_flag) { 895 flag(sps_scaling_list_data_present_flag); 896 if (current->sps_scaling_list_data_present_flag) 897 CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list)); 898 } else { 899 infer(sps_scaling_list_data_present_flag, 0); 900 } 901 902 flag(amp_enabled_flag); 903 flag(sample_adaptive_offset_enabled_flag); 904 905 flag(pcm_enabled_flag); 906 if (current->pcm_enabled_flag) { 907 u(4, pcm_sample_bit_depth_luma_minus1, 908 0, current->bit_depth_luma_minus8 + 8 - 1); 909 u(4, pcm_sample_bit_depth_chroma_minus1, 910 0, current->bit_depth_chroma_minus8 + 8 - 1); 911 912 ue(log2_min_pcm_luma_coding_block_size_minus3, 913 FFMIN(min_cb_log2_size_y, 5) - 3, FFMIN(ctb_log2_size_y, 5) - 3); 914 ue(log2_diff_max_min_pcm_luma_coding_block_size, 915 0, FFMIN(ctb_log2_size_y, 5) - (current->log2_min_pcm_luma_coding_block_size_minus3 + 3)); 916 917 flag(pcm_loop_filter_disabled_flag); 918 } 919 920 ue(num_short_term_ref_pic_sets, 0, HEVC_MAX_SHORT_TERM_REF_PIC_SETS); 921 for (i = 0; i < current->num_short_term_ref_pic_sets; i++) 922 CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->st_ref_pic_set[i], i, current)); 923 924 flag(long_term_ref_pics_present_flag); 925 if (current->long_term_ref_pics_present_flag) { 926 ue(num_long_term_ref_pics_sps, 0, HEVC_MAX_LONG_TERM_REF_PICS); 927 for (i = 0; i < current->num_long_term_ref_pics_sps; i++) { 928 ubs(current->log2_max_pic_order_cnt_lsb_minus4 + 4, 929 lt_ref_pic_poc_lsb_sps[i], 1, i); 930 flags(used_by_curr_pic_lt_sps_flag[i], 1, i); 931 } 932 } 933 934 flag(sps_temporal_mvp_enabled_flag); 935 flag(strong_intra_smoothing_enabled_flag); 936 937 flag(vui_parameters_present_flag); 938 if (current->vui_parameters_present_flag) 939 CHECK(FUNC(vui_parameters)(ctx, rw, ¤t->vui, current)); 940 else 941 CHECK(FUNC(vui_parameters_default)(ctx, rw, ¤t->vui, current)); 942 943 flag(sps_extension_present_flag); 944 if (current->sps_extension_present_flag) { 945 flag(sps_range_extension_flag); 946 flag(sps_multilayer_extension_flag); 947 flag(sps_3d_extension_flag); 948 flag(sps_scc_extension_flag); 949 ub(4, sps_extension_4bits); 950 } 951 952 if (current->sps_range_extension_flag) 953 CHECK(FUNC(sps_range_extension)(ctx, rw, current)); 954 if (current->sps_multilayer_extension_flag) 955 return AVERROR_PATCHWELCOME; 956 if (current->sps_3d_extension_flag) 957 return AVERROR_PATCHWELCOME; 958 if (current->sps_scc_extension_flag) 959 CHECK(FUNC(sps_scc_extension)(ctx, rw, current)); 960 if (current->sps_extension_4bits) 961 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); 962 963 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); 964 965 return 0; 966} 967 968static int FUNC(pps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, 969 H265RawPPS *current) 970{ 971 CodedBitstreamH265Context *h265 = ctx->priv_data; 972 const H265RawSPS *sps = h265->active_sps; 973 int err, i; 974 975 if (current->transform_skip_enabled_flag) 976 ue(log2_max_transform_skip_block_size_minus2, 0, 3); 977 flag(cross_component_prediction_enabled_flag); 978 979 flag(chroma_qp_offset_list_enabled_flag); 980 if (current->chroma_qp_offset_list_enabled_flag) { 981 ue(diff_cu_chroma_qp_offset_depth, 982 0, sps->log2_diff_max_min_luma_coding_block_size); 983 ue(chroma_qp_offset_list_len_minus1, 0, 5); 984 for (i = 0; i <= current->chroma_qp_offset_list_len_minus1; i++) { 985 ses(cb_qp_offset_list[i], -12, +12, 1, i); 986 ses(cr_qp_offset_list[i], -12, +12, 1, i); 987 } 988 } 989 990 ue(log2_sao_offset_scale_luma, 0, FFMAX(0, sps->bit_depth_luma_minus8 - 2)); 991 ue(log2_sao_offset_scale_chroma, 0, FFMAX(0, sps->bit_depth_chroma_minus8 - 2)); 992 993 return 0; 994} 995 996static int FUNC(pps_scc_extension)(CodedBitstreamContext *ctx, RWContext *rw, 997 H265RawPPS *current) 998{ 999 int err, comp, i; 1000 1001 flag(pps_curr_pic_ref_enabled_flag); 1002 1003 flag(residual_adaptive_colour_transform_enabled_flag); 1004 if (current->residual_adaptive_colour_transform_enabled_flag) { 1005 flag(pps_slice_act_qp_offsets_present_flag); 1006 se(pps_act_y_qp_offset_plus5, -7, +17); 1007 se(pps_act_cb_qp_offset_plus5, -7, +17); 1008 se(pps_act_cr_qp_offset_plus3, -9, +15); 1009 } else { 1010 infer(pps_slice_act_qp_offsets_present_flag, 0); 1011 infer(pps_act_y_qp_offset_plus5, 0); 1012 infer(pps_act_cb_qp_offset_plus5, 0); 1013 infer(pps_act_cr_qp_offset_plus3, 0); 1014 } 1015 1016 flag(pps_palette_predictor_initializer_present_flag); 1017 if (current->pps_palette_predictor_initializer_present_flag) { 1018 ue(pps_num_palette_predictor_initializer, 0, 128); 1019 if (current->pps_num_palette_predictor_initializer > 0) { 1020 flag(monochrome_palette_flag); 1021 ue(luma_bit_depth_entry_minus8, 0, 8); 1022 if (!current->monochrome_palette_flag) 1023 ue(chroma_bit_depth_entry_minus8, 0, 8); 1024 for (comp = 0; comp < (current->monochrome_palette_flag ? 1 : 3); comp++) { 1025 int bit_depth = comp == 0 ? current->luma_bit_depth_entry_minus8 + 8 1026 : current->chroma_bit_depth_entry_minus8 + 8; 1027 for (i = 0; i < current->pps_num_palette_predictor_initializer; i++) 1028 ubs(bit_depth, pps_palette_predictor_initializers[comp][i], 2, comp, i); 1029 } 1030 } 1031 } 1032 1033 return 0; 1034} 1035 1036static int FUNC(pps)(CodedBitstreamContext *ctx, RWContext *rw, 1037 H265RawPPS *current) 1038{ 1039 CodedBitstreamH265Context *h265 = ctx->priv_data; 1040 const H265RawSPS *sps; 1041 int err, i; 1042 1043 HEADER("Picture Parameter Set"); 1044 1045 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_PPS)); 1046 1047 ue(pps_pic_parameter_set_id, 0, 63); 1048 ue(pps_seq_parameter_set_id, 0, 15); 1049 sps = h265->sps[current->pps_seq_parameter_set_id]; 1050 if (!sps) { 1051 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", 1052 current->pps_seq_parameter_set_id); 1053 return AVERROR_INVALIDDATA; 1054 } 1055 h265->active_sps = sps; 1056 1057 flag(dependent_slice_segments_enabled_flag); 1058 flag(output_flag_present_flag); 1059 ub(3, num_extra_slice_header_bits); 1060 flag(sign_data_hiding_enabled_flag); 1061 flag(cabac_init_present_flag); 1062 1063 ue(num_ref_idx_l0_default_active_minus1, 0, 14); 1064 ue(num_ref_idx_l1_default_active_minus1, 0, 14); 1065 1066 se(init_qp_minus26, -(26 + 6 * sps->bit_depth_luma_minus8), +25); 1067 1068 flag(constrained_intra_pred_flag); 1069 flag(transform_skip_enabled_flag); 1070 flag(cu_qp_delta_enabled_flag); 1071 if (current->cu_qp_delta_enabled_flag) 1072 ue(diff_cu_qp_delta_depth, 1073 0, sps->log2_diff_max_min_luma_coding_block_size); 1074 else 1075 infer(diff_cu_qp_delta_depth, 0); 1076 1077 se(pps_cb_qp_offset, -12, +12); 1078 se(pps_cr_qp_offset, -12, +12); 1079 flag(pps_slice_chroma_qp_offsets_present_flag); 1080 1081 flag(weighted_pred_flag); 1082 flag(weighted_bipred_flag); 1083 1084 flag(transquant_bypass_enabled_flag); 1085 flag(tiles_enabled_flag); 1086 flag(entropy_coding_sync_enabled_flag); 1087 1088 if (current->tiles_enabled_flag) { 1089 ue(num_tile_columns_minus1, 0, HEVC_MAX_TILE_COLUMNS); 1090 ue(num_tile_rows_minus1, 0, HEVC_MAX_TILE_ROWS); 1091 flag(uniform_spacing_flag); 1092 if (!current->uniform_spacing_flag) { 1093 for (i = 0; i < current->num_tile_columns_minus1; i++) 1094 ues(column_width_minus1[i], 0, sps->pic_width_in_luma_samples, 1, i); 1095 for (i = 0; i < current->num_tile_rows_minus1; i++) 1096 ues(row_height_minus1[i], 0, sps->pic_height_in_luma_samples, 1, i); 1097 } 1098 flag(loop_filter_across_tiles_enabled_flag); 1099 } else { 1100 infer(num_tile_columns_minus1, 0); 1101 infer(num_tile_rows_minus1, 0); 1102 } 1103 1104 flag(pps_loop_filter_across_slices_enabled_flag); 1105 flag(deblocking_filter_control_present_flag); 1106 if (current->deblocking_filter_control_present_flag) { 1107 flag(deblocking_filter_override_enabled_flag); 1108 flag(pps_deblocking_filter_disabled_flag); 1109 if (!current->pps_deblocking_filter_disabled_flag) { 1110 se(pps_beta_offset_div2, -6, +6); 1111 se(pps_tc_offset_div2, -6, +6); 1112 } else { 1113 infer(pps_beta_offset_div2, 0); 1114 infer(pps_tc_offset_div2, 0); 1115 } 1116 } else { 1117 infer(deblocking_filter_override_enabled_flag, 0); 1118 infer(pps_deblocking_filter_disabled_flag, 0); 1119 infer(pps_beta_offset_div2, 0); 1120 infer(pps_tc_offset_div2, 0); 1121 } 1122 1123 flag(pps_scaling_list_data_present_flag); 1124 if (current->pps_scaling_list_data_present_flag) 1125 CHECK(FUNC(scaling_list_data)(ctx, rw, ¤t->scaling_list)); 1126 1127 flag(lists_modification_present_flag); 1128 1129 ue(log2_parallel_merge_level_minus2, 1130 0, (sps->log2_min_luma_coding_block_size_minus3 + 3 + 1131 sps->log2_diff_max_min_luma_coding_block_size - 2)); 1132 1133 flag(slice_segment_header_extension_present_flag); 1134 1135 flag(pps_extension_present_flag); 1136 if (current->pps_extension_present_flag) { 1137 flag(pps_range_extension_flag); 1138 flag(pps_multilayer_extension_flag); 1139 flag(pps_3d_extension_flag); 1140 flag(pps_scc_extension_flag); 1141 ub(4, pps_extension_4bits); 1142 } 1143 if (current->pps_range_extension_flag) 1144 CHECK(FUNC(pps_range_extension)(ctx, rw, current)); 1145 if (current->pps_multilayer_extension_flag) 1146 return AVERROR_PATCHWELCOME; 1147 if (current->pps_3d_extension_flag) 1148 return AVERROR_PATCHWELCOME; 1149 if (current->pps_scc_extension_flag) 1150 CHECK(FUNC(pps_scc_extension)(ctx, rw, current)); 1151 if (current->pps_extension_4bits) 1152 CHECK(FUNC(extension_data)(ctx, rw, ¤t->extension_data)); 1153 1154 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); 1155 1156 return 0; 1157} 1158 1159static int FUNC(aud)(CodedBitstreamContext *ctx, RWContext *rw, 1160 H265RawAUD *current) 1161{ 1162 int err; 1163 1164 HEADER("Access Unit Delimiter"); 1165 1166 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, HEVC_NAL_AUD)); 1167 1168 u(3, pic_type, 0, 2); 1169 1170 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); 1171 1172 return 0; 1173} 1174 1175static int FUNC(ref_pic_lists_modification)(CodedBitstreamContext *ctx, RWContext *rw, 1176 H265RawSliceHeader *current, 1177 unsigned int num_pic_total_curr) 1178{ 1179 unsigned int entry_size; 1180 int err, i; 1181 1182 entry_size = av_log2(num_pic_total_curr - 1) + 1; 1183 1184 flag(ref_pic_list_modification_flag_l0); 1185 if (current->ref_pic_list_modification_flag_l0) { 1186 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) 1187 us(entry_size, list_entry_l0[i], 0, num_pic_total_curr - 1, 1, i); 1188 } 1189 1190 if (current->slice_type == HEVC_SLICE_B) { 1191 flag(ref_pic_list_modification_flag_l1); 1192 if (current->ref_pic_list_modification_flag_l1) { 1193 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) 1194 us(entry_size, list_entry_l1[i], 0, num_pic_total_curr - 1, 1, i); 1195 } 1196 } 1197 1198 return 0; 1199} 1200 1201static int FUNC(pred_weight_table)(CodedBitstreamContext *ctx, RWContext *rw, 1202 H265RawSliceHeader *current) 1203{ 1204 CodedBitstreamH265Context *h265 = ctx->priv_data; 1205 const H265RawSPS *sps = h265->active_sps; 1206 int err, i, j; 1207 int chroma = !sps->separate_colour_plane_flag && 1208 sps->chroma_format_idc != 0; 1209 1210 ue(luma_log2_weight_denom, 0, 7); 1211 if (chroma) 1212 se(delta_chroma_log2_weight_denom, -7, 7); 1213 else 1214 infer(delta_chroma_log2_weight_denom, 0); 1215 1216 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { 1217 if (1 /* is not same POC and same layer_id */) 1218 flags(luma_weight_l0_flag[i], 1, i); 1219 else 1220 infer(luma_weight_l0_flag[i], 0); 1221 } 1222 if (chroma) { 1223 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { 1224 if (1 /* is not same POC and same layer_id */) 1225 flags(chroma_weight_l0_flag[i], 1, i); 1226 else 1227 infer(chroma_weight_l0_flag[i], 0); 1228 } 1229 } 1230 1231 for (i = 0; i <= current->num_ref_idx_l0_active_minus1; i++) { 1232 if (current->luma_weight_l0_flag[i]) { 1233 ses(delta_luma_weight_l0[i], -128, +127, 1, i); 1234 ses(luma_offset_l0[i], 1235 -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)), 1236 ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i); 1237 } else { 1238 infer(delta_luma_weight_l0[i], 0); 1239 infer(luma_offset_l0[i], 0); 1240 } 1241 if (current->chroma_weight_l0_flag[i]) { 1242 for (j = 0; j < 2; j++) { 1243 ses(delta_chroma_weight_l0[i][j], -128, +127, 2, i, j); 1244 ses(chroma_offset_l0[i][j], 1245 -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)), 1246 ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j); 1247 } 1248 } else { 1249 for (j = 0; j < 2; j++) { 1250 infer(delta_chroma_weight_l0[i][j], 0); 1251 infer(chroma_offset_l0[i][j], 0); 1252 } 1253 } 1254 } 1255 1256 if (current->slice_type == HEVC_SLICE_B) { 1257 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { 1258 if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */) 1259 flags(luma_weight_l1_flag[i], 1, i); 1260 else 1261 infer(luma_weight_l1_flag[i], 0); 1262 } 1263 if (chroma) { 1264 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { 1265 if (1 /* RefPicList1[i] is not CurrPic, nor is it in a different layer */) 1266 flags(chroma_weight_l1_flag[i], 1, i); 1267 else 1268 infer(chroma_weight_l1_flag[i], 0); 1269 } 1270 } 1271 1272 for (i = 0; i <= current->num_ref_idx_l1_active_minus1; i++) { 1273 if (current->luma_weight_l1_flag[i]) { 1274 ses(delta_luma_weight_l1[i], -128, +127, 1, i); 1275 ses(luma_offset_l1[i], 1276 -(1 << (sps->bit_depth_luma_minus8 + 8 - 1)), 1277 ((1 << (sps->bit_depth_luma_minus8 + 8 - 1)) - 1), 1, i); 1278 } else { 1279 infer(delta_luma_weight_l1[i], 0); 1280 infer(luma_offset_l1[i], 0); 1281 } 1282 if (current->chroma_weight_l1_flag[i]) { 1283 for (j = 0; j < 2; j++) { 1284 ses(delta_chroma_weight_l1[i][j], -128, +127, 2, i, j); 1285 ses(chroma_offset_l1[i][j], 1286 -(4 << (sps->bit_depth_chroma_minus8 + 8 - 1)), 1287 ((4 << (sps->bit_depth_chroma_minus8 + 8 - 1)) - 1), 2, i, j); 1288 } 1289 } else { 1290 for (j = 0; j < 2; j++) { 1291 infer(delta_chroma_weight_l1[i][j], 0); 1292 infer(chroma_offset_l1[i][j], 0); 1293 } 1294 } 1295 } 1296 } 1297 1298 return 0; 1299} 1300 1301static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw, 1302 H265RawSliceHeader *current) 1303{ 1304 CodedBitstreamH265Context *h265 = ctx->priv_data; 1305 const H265RawSPS *sps; 1306 const H265RawPPS *pps; 1307 unsigned int min_cb_log2_size_y, ctb_log2_size_y, ctb_size_y; 1308 unsigned int pic_width_in_ctbs_y, pic_height_in_ctbs_y, pic_size_in_ctbs_y; 1309 unsigned int num_pic_total_curr = 0; 1310 int err, i; 1311 1312 HEADER("Slice Segment Header"); 1313 1314 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, -1)); 1315 1316 flag(first_slice_segment_in_pic_flag); 1317 1318 if (current->nal_unit_header.nal_unit_type >= HEVC_NAL_BLA_W_LP && 1319 current->nal_unit_header.nal_unit_type <= HEVC_NAL_RSV_IRAP_VCL23) 1320 flag(no_output_of_prior_pics_flag); 1321 1322 ue(slice_pic_parameter_set_id, 0, 63); 1323 1324 pps = h265->pps[current->slice_pic_parameter_set_id]; 1325 if (!pps) { 1326 av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n", 1327 current->slice_pic_parameter_set_id); 1328 return AVERROR_INVALIDDATA; 1329 } 1330 h265->active_pps = pps; 1331 1332 sps = h265->sps[pps->pps_seq_parameter_set_id]; 1333 if (!sps) { 1334 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", 1335 pps->pps_seq_parameter_set_id); 1336 return AVERROR_INVALIDDATA; 1337 } 1338 h265->active_sps = sps; 1339 1340 min_cb_log2_size_y = sps->log2_min_luma_coding_block_size_minus3 + 3; 1341 ctb_log2_size_y = min_cb_log2_size_y + sps->log2_diff_max_min_luma_coding_block_size; 1342 ctb_size_y = 1 << ctb_log2_size_y; 1343 pic_width_in_ctbs_y = 1344 (sps->pic_width_in_luma_samples + ctb_size_y - 1) / ctb_size_y; 1345 pic_height_in_ctbs_y = 1346 (sps->pic_height_in_luma_samples + ctb_size_y - 1) / ctb_size_y; 1347 pic_size_in_ctbs_y = pic_width_in_ctbs_y * pic_height_in_ctbs_y; 1348 1349 if (!current->first_slice_segment_in_pic_flag) { 1350 unsigned int address_size = av_log2(pic_size_in_ctbs_y - 1) + 1; 1351 if (pps->dependent_slice_segments_enabled_flag) 1352 flag(dependent_slice_segment_flag); 1353 else 1354 infer(dependent_slice_segment_flag, 0); 1355 u(address_size, slice_segment_address, 0, pic_size_in_ctbs_y - 1); 1356 } else { 1357 infer(dependent_slice_segment_flag, 0); 1358 } 1359 1360 if (!current->dependent_slice_segment_flag) { 1361 for (i = 0; i < pps->num_extra_slice_header_bits; i++) 1362 flags(slice_reserved_flag[i], 1, i); 1363 1364 ue(slice_type, 0, 2); 1365 1366 if (pps->output_flag_present_flag) 1367 flag(pic_output_flag); 1368 1369 if (sps->separate_colour_plane_flag) 1370 u(2, colour_plane_id, 0, 2); 1371 1372 if (current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_W_RADL && 1373 current->nal_unit_header.nal_unit_type != HEVC_NAL_IDR_N_LP) { 1374 const H265RawSTRefPicSet *rps; 1375 int dpb_slots_remaining; 1376 1377 ub(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, slice_pic_order_cnt_lsb); 1378 1379 flag(short_term_ref_pic_set_sps_flag); 1380 if (!current->short_term_ref_pic_set_sps_flag) { 1381 CHECK(FUNC(st_ref_pic_set)(ctx, rw, ¤t->short_term_ref_pic_set, 1382 sps->num_short_term_ref_pic_sets, sps)); 1383 rps = ¤t->short_term_ref_pic_set; 1384 } else if (sps->num_short_term_ref_pic_sets > 1) { 1385 unsigned int idx_size = av_log2(sps->num_short_term_ref_pic_sets - 1) + 1; 1386 u(idx_size, short_term_ref_pic_set_idx, 1387 0, sps->num_short_term_ref_pic_sets - 1); 1388 rps = &sps->st_ref_pic_set[current->short_term_ref_pic_set_idx]; 1389 } else { 1390 infer(short_term_ref_pic_set_idx, 0); 1391 rps = &sps->st_ref_pic_set[0]; 1392 } 1393 1394 dpb_slots_remaining = HEVC_MAX_DPB_SIZE - 1 - 1395 rps->num_negative_pics - rps->num_positive_pics; 1396 if (pps->pps_curr_pic_ref_enabled_flag && 1397 (sps->sample_adaptive_offset_enabled_flag || 1398 !pps->pps_deblocking_filter_disabled_flag || 1399 pps->deblocking_filter_override_enabled_flag)) { 1400 // This picture will occupy two DPB slots. 1401 if (dpb_slots_remaining == 0) { 1402 av_log(ctx->log_ctx, AV_LOG_ERROR, "Invalid stream: " 1403 "short-term ref pic set contains too many pictures " 1404 "to use with current picture reference enabled.\n"); 1405 return AVERROR_INVALIDDATA; 1406 } 1407 --dpb_slots_remaining; 1408 } 1409 1410 num_pic_total_curr = 0; 1411 for (i = 0; i < rps->num_negative_pics; i++) 1412 if (rps->used_by_curr_pic_s0_flag[i]) 1413 ++num_pic_total_curr; 1414 for (i = 0; i < rps->num_positive_pics; i++) 1415 if (rps->used_by_curr_pic_s1_flag[i]) 1416 ++num_pic_total_curr; 1417 1418 if (sps->long_term_ref_pics_present_flag) { 1419 unsigned int idx_size; 1420 1421 if (sps->num_long_term_ref_pics_sps > 0) { 1422 ue(num_long_term_sps, 0, FFMIN(sps->num_long_term_ref_pics_sps, 1423 dpb_slots_remaining)); 1424 idx_size = av_log2(sps->num_long_term_ref_pics_sps - 1) + 1; 1425 dpb_slots_remaining -= current->num_long_term_sps; 1426 } else { 1427 infer(num_long_term_sps, 0); 1428 idx_size = 0; 1429 } 1430 ue(num_long_term_pics, 0, dpb_slots_remaining); 1431 1432 for (i = 0; i < current->num_long_term_sps + 1433 current->num_long_term_pics; i++) { 1434 if (i < current->num_long_term_sps) { 1435 if (sps->num_long_term_ref_pics_sps > 1) 1436 us(idx_size, lt_idx_sps[i], 1437 0, sps->num_long_term_ref_pics_sps - 1, 1, i); 1438 if (sps->used_by_curr_pic_lt_sps_flag[current->lt_idx_sps[i]]) 1439 ++num_pic_total_curr; 1440 } else { 1441 ubs(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, poc_lsb_lt[i], 1, i); 1442 flags(used_by_curr_pic_lt_flag[i], 1, i); 1443 if (current->used_by_curr_pic_lt_flag[i]) 1444 ++num_pic_total_curr; 1445 } 1446 flags(delta_poc_msb_present_flag[i], 1, i); 1447 if (current->delta_poc_msb_present_flag[i]) 1448 ues(delta_poc_msb_cycle_lt[i], 0, UINT32_MAX - 1, 1, i); 1449 else 1450 infer(delta_poc_msb_cycle_lt[i], 0); 1451 } 1452 } 1453 1454 if (sps->sps_temporal_mvp_enabled_flag) 1455 flag(slice_temporal_mvp_enabled_flag); 1456 else 1457 infer(slice_temporal_mvp_enabled_flag, 0); 1458 1459 if (pps->pps_curr_pic_ref_enabled_flag) 1460 ++num_pic_total_curr; 1461 } 1462 1463 if (sps->sample_adaptive_offset_enabled_flag) { 1464 flag(slice_sao_luma_flag); 1465 if (!sps->separate_colour_plane_flag && sps->chroma_format_idc != 0) 1466 flag(slice_sao_chroma_flag); 1467 else 1468 infer(slice_sao_chroma_flag, 0); 1469 } else { 1470 infer(slice_sao_luma_flag, 0); 1471 infer(slice_sao_chroma_flag, 0); 1472 } 1473 1474 if (current->slice_type == HEVC_SLICE_P || 1475 current->slice_type == HEVC_SLICE_B) { 1476 flag(num_ref_idx_active_override_flag); 1477 if (current->num_ref_idx_active_override_flag) { 1478 ue(num_ref_idx_l0_active_minus1, 0, 14); 1479 if (current->slice_type == HEVC_SLICE_B) 1480 ue(num_ref_idx_l1_active_minus1, 0, 14); 1481 else 1482 infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1); 1483 } else { 1484 infer(num_ref_idx_l0_active_minus1, pps->num_ref_idx_l0_default_active_minus1); 1485 infer(num_ref_idx_l1_active_minus1, pps->num_ref_idx_l1_default_active_minus1); 1486 } 1487 1488 if (pps->lists_modification_present_flag && num_pic_total_curr > 1) 1489 CHECK(FUNC(ref_pic_lists_modification)(ctx, rw, current, 1490 num_pic_total_curr)); 1491 1492 if (current->slice_type == HEVC_SLICE_B) 1493 flag(mvd_l1_zero_flag); 1494 if (pps->cabac_init_present_flag) 1495 flag(cabac_init_flag); 1496 else 1497 infer(cabac_init_flag, 0); 1498 if (current->slice_temporal_mvp_enabled_flag) { 1499 if (current->slice_type == HEVC_SLICE_B) 1500 flag(collocated_from_l0_flag); 1501 else 1502 infer(collocated_from_l0_flag, 1); 1503 if (current->collocated_from_l0_flag) { 1504 if (current->num_ref_idx_l0_active_minus1 > 0) 1505 ue(collocated_ref_idx, 0, current->num_ref_idx_l0_active_minus1); 1506 else 1507 infer(collocated_ref_idx, 0); 1508 } else { 1509 if (current->num_ref_idx_l1_active_minus1 > 0) 1510 ue(collocated_ref_idx, 0, current->num_ref_idx_l1_active_minus1); 1511 else 1512 infer(collocated_ref_idx, 0); 1513 } 1514 } 1515 1516 if ((pps->weighted_pred_flag && current->slice_type == HEVC_SLICE_P) || 1517 (pps->weighted_bipred_flag && current->slice_type == HEVC_SLICE_B)) 1518 CHECK(FUNC(pred_weight_table)(ctx, rw, current)); 1519 1520 ue(five_minus_max_num_merge_cand, 0, 4); 1521 if (sps->motion_vector_resolution_control_idc == 2) 1522 flag(use_integer_mv_flag); 1523 else 1524 infer(use_integer_mv_flag, sps->motion_vector_resolution_control_idc); 1525 } 1526 1527 se(slice_qp_delta, 1528 - 6 * sps->bit_depth_luma_minus8 - (pps->init_qp_minus26 + 26), 1529 + 51 - (pps->init_qp_minus26 + 26)); 1530 if (pps->pps_slice_chroma_qp_offsets_present_flag) { 1531 se(slice_cb_qp_offset, -12, +12); 1532 se(slice_cr_qp_offset, -12, +12); 1533 } else { 1534 infer(slice_cb_qp_offset, 0); 1535 infer(slice_cr_qp_offset, 0); 1536 } 1537 if (pps->pps_slice_act_qp_offsets_present_flag) { 1538 se(slice_act_y_qp_offset, 1539 -12 - (pps->pps_act_y_qp_offset_plus5 - 5), 1540 +12 - (pps->pps_act_y_qp_offset_plus5 - 5)); 1541 se(slice_act_cb_qp_offset, 1542 -12 - (pps->pps_act_cb_qp_offset_plus5 - 5), 1543 +12 - (pps->pps_act_cb_qp_offset_plus5 - 5)); 1544 se(slice_act_cr_qp_offset, 1545 -12 - (pps->pps_act_cr_qp_offset_plus3 - 3), 1546 +12 - (pps->pps_act_cr_qp_offset_plus3 - 3)); 1547 } else { 1548 infer(slice_act_y_qp_offset, 0); 1549 infer(slice_act_cb_qp_offset, 0); 1550 infer(slice_act_cr_qp_offset, 0); 1551 } 1552 if (pps->chroma_qp_offset_list_enabled_flag) 1553 flag(cu_chroma_qp_offset_enabled_flag); 1554 else 1555 infer(cu_chroma_qp_offset_enabled_flag, 0); 1556 1557 if (pps->deblocking_filter_override_enabled_flag) 1558 flag(deblocking_filter_override_flag); 1559 else 1560 infer(deblocking_filter_override_flag, 0); 1561 if (current->deblocking_filter_override_flag) { 1562 flag(slice_deblocking_filter_disabled_flag); 1563 if (!current->slice_deblocking_filter_disabled_flag) { 1564 se(slice_beta_offset_div2, -6, +6); 1565 se(slice_tc_offset_div2, -6, +6); 1566 } else { 1567 infer(slice_beta_offset_div2, pps->pps_beta_offset_div2); 1568 infer(slice_tc_offset_div2, pps->pps_tc_offset_div2); 1569 } 1570 } else { 1571 infer(slice_deblocking_filter_disabled_flag, 1572 pps->pps_deblocking_filter_disabled_flag); 1573 infer(slice_beta_offset_div2, pps->pps_beta_offset_div2); 1574 infer(slice_tc_offset_div2, pps->pps_tc_offset_div2); 1575 } 1576 if (pps->pps_loop_filter_across_slices_enabled_flag && 1577 (current->slice_sao_luma_flag || current->slice_sao_chroma_flag || 1578 !current->slice_deblocking_filter_disabled_flag)) 1579 flag(slice_loop_filter_across_slices_enabled_flag); 1580 else 1581 infer(slice_loop_filter_across_slices_enabled_flag, 1582 pps->pps_loop_filter_across_slices_enabled_flag); 1583 } 1584 1585 if (pps->tiles_enabled_flag || pps->entropy_coding_sync_enabled_flag) { 1586 unsigned int num_entry_point_offsets_limit; 1587 if (!pps->tiles_enabled_flag && pps->entropy_coding_sync_enabled_flag) 1588 num_entry_point_offsets_limit = pic_height_in_ctbs_y - 1; 1589 else if (pps->tiles_enabled_flag && !pps->entropy_coding_sync_enabled_flag) 1590 num_entry_point_offsets_limit = 1591 (pps->num_tile_columns_minus1 + 1) * (pps->num_tile_rows_minus1 + 1); 1592 else 1593 num_entry_point_offsets_limit = 1594 (pps->num_tile_columns_minus1 + 1) * pic_height_in_ctbs_y - 1; 1595 ue(num_entry_point_offsets, 0, num_entry_point_offsets_limit); 1596 1597 if (current->num_entry_point_offsets > HEVC_MAX_ENTRY_POINT_OFFSETS) { 1598 av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many entry points: " 1599 "%"PRIu16".\n", current->num_entry_point_offsets); 1600 return AVERROR_PATCHWELCOME; 1601 } 1602 1603 if (current->num_entry_point_offsets > 0) { 1604 ue(offset_len_minus1, 0, 31); 1605 for (i = 0; i < current->num_entry_point_offsets; i++) 1606 ubs(current->offset_len_minus1 + 1, entry_point_offset_minus1[i], 1, i); 1607 } 1608 } 1609 1610 if (pps->slice_segment_header_extension_present_flag) { 1611 ue(slice_segment_header_extension_length, 0, 256); 1612 for (i = 0; i < current->slice_segment_header_extension_length; i++) 1613 us(8, slice_segment_header_extension_data_byte[i], 0x00, 0xff, 1, i); 1614 } 1615 1616 CHECK(FUNC(byte_alignment)(ctx, rw)); 1617 1618 return 0; 1619} 1620 1621static int FUNC(sei_buffering_period) 1622 (CodedBitstreamContext *ctx, RWContext *rw, 1623 H265RawSEIBufferingPeriod *current, SEIMessageState *sei) 1624{ 1625 CodedBitstreamH265Context *h265 = ctx->priv_data; 1626 const H265RawSPS *sps; 1627 const H265RawHRDParameters *hrd; 1628 int err, i, length; 1629 1630#ifdef READ 1631 int start_pos, end_pos; 1632 start_pos = get_bits_count(rw); 1633#endif 1634 1635 HEADER("Buffering Period"); 1636 1637 ue(bp_seq_parameter_set_id, 0, HEVC_MAX_SPS_COUNT - 1); 1638 1639 sps = h265->sps[current->bp_seq_parameter_set_id]; 1640 if (!sps) { 1641 av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n", 1642 current->bp_seq_parameter_set_id); 1643 return AVERROR_INVALIDDATA; 1644 } 1645 h265->active_sps = sps; 1646 1647 if (!sps->vui_parameters_present_flag || 1648 !sps->vui.vui_hrd_parameters_present_flag) { 1649 av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires " 1650 "HRD parameters to be present in SPS.\n"); 1651 return AVERROR_INVALIDDATA; 1652 } 1653 hrd = &sps->vui.hrd_parameters; 1654 if (!hrd->nal_hrd_parameters_present_flag && 1655 !hrd->vcl_hrd_parameters_present_flag) { 1656 av_log(ctx->log_ctx, AV_LOG_ERROR, "Buffering period SEI requires " 1657 "NAL or VCL HRD parameters to be present.\n"); 1658 return AVERROR_INVALIDDATA; 1659 } 1660 1661 if (!hrd->sub_pic_hrd_params_present_flag) 1662 flag(irap_cpb_params_present_flag); 1663 else 1664 infer(irap_cpb_params_present_flag, 0); 1665 if (current->irap_cpb_params_present_flag) { 1666 length = hrd->au_cpb_removal_delay_length_minus1 + 1; 1667 ub(length, cpb_delay_offset); 1668 length = hrd->dpb_output_delay_length_minus1 + 1; 1669 ub(length, dpb_delay_offset); 1670 } else { 1671 infer(cpb_delay_offset, 0); 1672 infer(dpb_delay_offset, 0); 1673 } 1674 1675 flag(concatenation_flag); 1676 1677 length = hrd->au_cpb_removal_delay_length_minus1 + 1; 1678 ub(length, au_cpb_removal_delay_delta_minus1); 1679 1680 if (hrd->nal_hrd_parameters_present_flag) { 1681 for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) { 1682 length = hrd->initial_cpb_removal_delay_length_minus1 + 1; 1683 1684 ubs(length, nal_initial_cpb_removal_delay[i], 1, i); 1685 ubs(length, nal_initial_cpb_removal_offset[i], 1, i); 1686 1687 if (hrd->sub_pic_hrd_params_present_flag || 1688 current->irap_cpb_params_present_flag) { 1689 ubs(length, nal_initial_alt_cpb_removal_delay[i], 1, i); 1690 ubs(length, nal_initial_alt_cpb_removal_offset[i], 1, i); 1691 } 1692 } 1693 } 1694 if (hrd->vcl_hrd_parameters_present_flag) { 1695 for (i = 0; i <= hrd->cpb_cnt_minus1[0]; i++) { 1696 length = hrd->initial_cpb_removal_delay_length_minus1 + 1; 1697 1698 ubs(length, vcl_initial_cpb_removal_delay[i], 1, i); 1699 ubs(length, vcl_initial_cpb_removal_offset[i], 1, i); 1700 1701 if (hrd->sub_pic_hrd_params_present_flag || 1702 current->irap_cpb_params_present_flag) { 1703 ubs(length, vcl_initial_alt_cpb_removal_delay[i], 1, i); 1704 ubs(length, vcl_initial_alt_cpb_removal_offset[i], 1, i); 1705 } 1706 } 1707 } 1708 1709#ifdef READ 1710 end_pos = get_bits_count(rw); 1711 if (cbs_h265_payload_extension_present(rw, sei->payload_size, 1712 end_pos - start_pos)) 1713 flag(use_alt_cpb_params_flag); 1714 else 1715 infer(use_alt_cpb_params_flag, 0); 1716#else 1717 // If unknown extension data exists, then use_alt_cpb_params_flag is 1718 // coded in the bitstream and must be written even if it's 0. 1719 if (current->use_alt_cpb_params_flag || sei->extension_present) { 1720 flag(use_alt_cpb_params_flag); 1721 // Ensure this bit is not the last in the payload by making the 1722 // more_data_in_payload() check evaluate to true, so it may not 1723 // be mistaken as something else by decoders. 1724 sei->extension_present = 1; 1725 } 1726#endif 1727 1728 return 0; 1729} 1730 1731static int FUNC(sei_pic_timing) 1732 (CodedBitstreamContext *ctx, RWContext *rw, 1733 H265RawSEIPicTiming *current, SEIMessageState *sei) 1734{ 1735 CodedBitstreamH265Context *h265 = ctx->priv_data; 1736 const H265RawSPS *sps; 1737 const H265RawHRDParameters *hrd; 1738 int err, expected_source_scan_type, i, length; 1739 1740 HEADER("Picture Timing"); 1741 1742 sps = h265->active_sps; 1743 if (!sps) { 1744 av_log(ctx->log_ctx, AV_LOG_ERROR, 1745 "No active SPS for pic_timing.\n"); 1746 return AVERROR_INVALIDDATA; 1747 } 1748 1749 expected_source_scan_type = 2 - 1750 2 * sps->profile_tier_level.general_interlaced_source_flag - 1751 sps->profile_tier_level.general_progressive_source_flag; 1752 1753 if (sps->vui.frame_field_info_present_flag) { 1754 u(4, pic_struct, 0, 12); 1755 u(2, source_scan_type, 1756 expected_source_scan_type >= 0 ? expected_source_scan_type : 0, 1757 expected_source_scan_type >= 0 ? expected_source_scan_type : 2); 1758 flag(duplicate_flag); 1759 } else { 1760 infer(pic_struct, 0); 1761 infer(source_scan_type, 1762 expected_source_scan_type >= 0 ? expected_source_scan_type : 2); 1763 infer(duplicate_flag, 0); 1764 } 1765 1766 if (sps->vui_parameters_present_flag && 1767 sps->vui.vui_hrd_parameters_present_flag) 1768 hrd = &sps->vui.hrd_parameters; 1769 else 1770 hrd = NULL; 1771 if (hrd && (hrd->nal_hrd_parameters_present_flag || 1772 hrd->vcl_hrd_parameters_present_flag)) { 1773 length = hrd->au_cpb_removal_delay_length_minus1 + 1; 1774 ub(length, au_cpb_removal_delay_minus1); 1775 1776 length = hrd->dpb_output_delay_length_minus1 + 1; 1777 ub(length, pic_dpb_output_delay); 1778 1779 if (hrd->sub_pic_hrd_params_present_flag) { 1780 length = hrd->dpb_output_delay_du_length_minus1 + 1; 1781 ub(length, pic_dpb_output_du_delay); 1782 } 1783 1784 if (hrd->sub_pic_hrd_params_present_flag && 1785 hrd->sub_pic_cpb_params_in_pic_timing_sei_flag) { 1786 // Each decoding unit must contain at least one slice segment. 1787 ue(num_decoding_units_minus1, 0, HEVC_MAX_SLICE_SEGMENTS); 1788 flag(du_common_cpb_removal_delay_flag); 1789 1790 length = hrd->du_cpb_removal_delay_increment_length_minus1 + 1; 1791 if (current->du_common_cpb_removal_delay_flag) 1792 ub(length, du_common_cpb_removal_delay_increment_minus1); 1793 1794 for (i = 0; i <= current->num_decoding_units_minus1; i++) { 1795 ues(num_nalus_in_du_minus1[i], 1796 0, HEVC_MAX_SLICE_SEGMENTS, 1, i); 1797 if (!current->du_common_cpb_removal_delay_flag && 1798 i < current->num_decoding_units_minus1) 1799 ubs(length, du_cpb_removal_delay_increment_minus1[i], 1, i); 1800 } 1801 } 1802 } 1803 1804 return 0; 1805} 1806 1807static int FUNC(sei_pan_scan_rect) 1808 (CodedBitstreamContext *ctx, RWContext *rw, 1809 H265RawSEIPanScanRect *current, SEIMessageState *sei) 1810{ 1811 int err, i; 1812 1813 HEADER("Pan-Scan Rectangle"); 1814 1815 ue(pan_scan_rect_id, 0, UINT32_MAX - 1); 1816 flag(pan_scan_rect_cancel_flag); 1817 1818 if (!current->pan_scan_rect_cancel_flag) { 1819 ue(pan_scan_cnt_minus1, 0, 2); 1820 1821 for (i = 0; i <= current->pan_scan_cnt_minus1; i++) { 1822 ses(pan_scan_rect_left_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); 1823 ses(pan_scan_rect_right_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); 1824 ses(pan_scan_rect_top_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); 1825 ses(pan_scan_rect_bottom_offset[i], INT32_MIN + 1, INT32_MAX, 1, i); 1826 } 1827 1828 flag(pan_scan_rect_persistence_flag); 1829 } 1830 1831 return 0; 1832} 1833 1834static int FUNC(sei_recovery_point) 1835 (CodedBitstreamContext *ctx, RWContext *rw, 1836 H265RawSEIRecoveryPoint *current, SEIMessageState *sei) 1837{ 1838 int err; 1839 1840 HEADER("Recovery Point"); 1841 1842 se(recovery_poc_cnt, -32768, 32767); 1843 1844 flag(exact_match_flag); 1845 flag(broken_link_flag); 1846 1847 return 0; 1848} 1849 1850static int FUNC(film_grain_characteristics)(CodedBitstreamContext *ctx, RWContext *rw, 1851 H265RawFilmGrainCharacteristics *current, 1852 SEIMessageState *state) 1853{ 1854 CodedBitstreamH265Context *h265 = ctx->priv_data; 1855 const H265RawSPS *sps = h265->active_sps; 1856 int err, c, i, j; 1857 1858 HEADER("Film Grain Characteristics"); 1859 1860 flag(film_grain_characteristics_cancel_flag); 1861 if (!current->film_grain_characteristics_cancel_flag) { 1862 int filmGrainBitDepth[3]; 1863 1864 u(2, film_grain_model_id, 0, 1); 1865 flag(separate_colour_description_present_flag); 1866 if (current->separate_colour_description_present_flag) { 1867 ub(3, film_grain_bit_depth_luma_minus8); 1868 ub(3, film_grain_bit_depth_chroma_minus8); 1869 flag(film_grain_full_range_flag); 1870 ub(8, film_grain_colour_primaries); 1871 ub(8, film_grain_transfer_characteristics); 1872 ub(8, film_grain_matrix_coeffs); 1873 } else { 1874 if (!sps) { 1875 av_log(ctx->log_ctx, AV_LOG_ERROR, 1876 "No active SPS for film_grain_characteristics.\n"); 1877 return AVERROR_INVALIDDATA; 1878 } 1879 infer(film_grain_bit_depth_luma_minus8, sps->bit_depth_luma_minus8); 1880 infer(film_grain_bit_depth_chroma_minus8, sps->bit_depth_chroma_minus8); 1881 infer(film_grain_full_range_flag, sps->vui.video_full_range_flag); 1882 infer(film_grain_colour_primaries, sps->vui.colour_primaries); 1883 infer(film_grain_transfer_characteristics, sps->vui.transfer_characteristics); 1884 infer(film_grain_matrix_coeffs, sps->vui.matrix_coefficients); 1885 } 1886 1887 filmGrainBitDepth[0] = current->film_grain_bit_depth_luma_minus8 + 8; 1888 filmGrainBitDepth[1] = 1889 filmGrainBitDepth[2] = current->film_grain_bit_depth_chroma_minus8 + 8; 1890 1891 u(2, blending_mode_id, 0, 1); 1892 ub(4, log2_scale_factor); 1893 for (c = 0; c < 3; c++) 1894 flags(comp_model_present_flag[c], 1, c); 1895 for (c = 0; c < 3; c++) { 1896 if (current->comp_model_present_flag[c]) { 1897 ubs(8, num_intensity_intervals_minus1[c], 1, c); 1898 us(3, num_model_values_minus1[c], 0, 5, 1, c); 1899 for (i = 0; i <= current->num_intensity_intervals_minus1[c]; i++) { 1900 ubs(8, intensity_interval_lower_bound[c][i], 2, c, i); 1901 ubs(8, intensity_interval_upper_bound[c][i], 2, c, i); 1902 for (j = 0; j <= current->num_model_values_minus1[c]; j++) 1903 ses(comp_model_value[c][i][j], 0 - current->film_grain_model_id * (1 << (filmGrainBitDepth[c] - 1)), 1904 ((1 << filmGrainBitDepth[c]) - 1) - current->film_grain_model_id * (1 << (filmGrainBitDepth[c] - 1)), 1905 3, c, i, j); 1906 } 1907 } 1908 } 1909 flag(film_grain_characteristics_persistence_flag); 1910 } 1911 1912 return 0; 1913} 1914 1915static int FUNC(sei_display_orientation) 1916 (CodedBitstreamContext *ctx, RWContext *rw, 1917 H265RawSEIDisplayOrientation *current, SEIMessageState *sei) 1918{ 1919 int err; 1920 1921 HEADER("Display Orientation"); 1922 1923 flag(display_orientation_cancel_flag); 1924 if (!current->display_orientation_cancel_flag) { 1925 flag(hor_flip); 1926 flag(ver_flip); 1927 ub(16, anticlockwise_rotation); 1928 flag(display_orientation_persistence_flag); 1929 } 1930 1931 return 0; 1932} 1933 1934static int FUNC(sei_active_parameter_sets) 1935 (CodedBitstreamContext *ctx, RWContext *rw, 1936 H265RawSEIActiveParameterSets *current, SEIMessageState *sei) 1937{ 1938 CodedBitstreamH265Context *h265 = ctx->priv_data; 1939 const H265RawVPS *vps; 1940 int err, i; 1941 1942 HEADER("Active Parameter Sets"); 1943 1944 u(4, active_video_parameter_set_id, 0, HEVC_MAX_VPS_COUNT); 1945 vps = h265->vps[current->active_video_parameter_set_id]; 1946 if (!vps) { 1947 av_log(ctx->log_ctx, AV_LOG_ERROR, "VPS id %d not available for active " 1948 "parameter sets.\n", current->active_video_parameter_set_id); 1949 return AVERROR_INVALIDDATA; 1950 } 1951 h265->active_vps = vps; 1952 1953 flag(self_contained_cvs_flag); 1954 flag(no_parameter_set_update_flag); 1955 1956 ue(num_sps_ids_minus1, 0, HEVC_MAX_SPS_COUNT - 1); 1957 for (i = 0; i <= current->num_sps_ids_minus1; i++) 1958 ues(active_seq_parameter_set_id[i], 0, HEVC_MAX_SPS_COUNT - 1, 1, i); 1959 1960 for (i = vps->vps_base_layer_internal_flag; 1961 i <= FFMIN(62, vps->vps_max_layers_minus1); i++) { 1962 ues(layer_sps_idx[i], 0, current->num_sps_ids_minus1, 1, i); 1963 1964 if (i == 0) 1965 h265->active_sps = h265->sps[current->active_seq_parameter_set_id[current->layer_sps_idx[0]]]; 1966 } 1967 1968 return 0; 1969} 1970 1971static int FUNC(sei_decoded_picture_hash) 1972 (CodedBitstreamContext *ctx, RWContext *rw, 1973 H265RawSEIDecodedPictureHash *current, SEIMessageState *sei) 1974{ 1975 CodedBitstreamH265Context *h265 = ctx->priv_data; 1976 const H265RawSPS *sps = h265->active_sps; 1977 int err, c, i; 1978 1979 HEADER("Decoded Picture Hash"); 1980 1981 if (!sps) { 1982 av_log(ctx->log_ctx, AV_LOG_ERROR, 1983 "No active SPS for decoded picture hash.\n"); 1984 return AVERROR_INVALIDDATA; 1985 } 1986 1987 u(8, hash_type, 0, 2); 1988 1989 for (c = 0; c < (sps->chroma_format_idc == 0 ? 1 : 3); c++) { 1990 if (current->hash_type == 0) { 1991 for (i = 0; i < 16; i++) 1992 us(8, picture_md5[c][i], 0x00, 0xff, 2, c, i); 1993 } else if (current->hash_type == 1) { 1994 us(16, picture_crc[c], 0x0000, 0xffff, 1, c); 1995 } else if (current->hash_type == 2) { 1996 us(32, picture_checksum[c], 0x00000000, 0xffffffff, 1, c); 1997 } 1998 } 1999 2000 return 0; 2001} 2002 2003static int FUNC(sei_time_code) 2004 (CodedBitstreamContext *ctx, RWContext *rw, 2005 H265RawSEITimeCode *current, SEIMessageState *sei) 2006{ 2007 int err, i; 2008 2009 HEADER("Time Code"); 2010 2011 u(2, num_clock_ts, 1, 3); 2012 2013 for (i = 0; i < current->num_clock_ts; i++) { 2014 flags(clock_timestamp_flag[i], 1, i); 2015 2016 if (current->clock_timestamp_flag[i]) { 2017 flags(units_field_based_flag[i], 1, i); 2018 us(5, counting_type[i], 0, 6, 1, i); 2019 flags(full_timestamp_flag[i], 1, i); 2020 flags(discontinuity_flag[i], 1, i); 2021 flags(cnt_dropped_flag[i], 1, i); 2022 2023 ubs(9, n_frames[i], 1, i); 2024 2025 if (current->full_timestamp_flag[i]) { 2026 us(6, seconds_value[i], 0, 59, 1, i); 2027 us(6, minutes_value[i], 0, 59, 1, i); 2028 us(5, hours_value[i], 0, 23, 1, i); 2029 } else { 2030 flags(seconds_flag[i], 1, i); 2031 if (current->seconds_flag[i]) { 2032 us(6, seconds_value[i], 0, 59, 1, i); 2033 flags(minutes_flag[i], 1, i); 2034 if (current->minutes_flag[i]) { 2035 us(6, minutes_value[i], 0, 59, 1, i); 2036 flags(hours_flag[i], 1, i); 2037 if (current->hours_flag[i]) 2038 us(5, hours_value[i], 0, 23, 1, i); 2039 } 2040 } 2041 } 2042 2043 ubs(5, time_offset_length[i], 1, i); 2044 if (current->time_offset_length[i] > 0) 2045 ibs(current->time_offset_length[i], time_offset_value[i], 1, i); 2046 else 2047 infer(time_offset_value[i], 0); 2048 } 2049 } 2050 2051 return 0; 2052} 2053 2054static int FUNC(sei_alpha_channel_info) 2055 (CodedBitstreamContext *ctx, RWContext *rw, 2056 H265RawSEIAlphaChannelInfo *current, SEIMessageState *sei) 2057{ 2058 int err, length; 2059 2060 HEADER("Alpha Channel Information"); 2061 2062 flag(alpha_channel_cancel_flag); 2063 if (!current->alpha_channel_cancel_flag) { 2064 ub(3, alpha_channel_use_idc); 2065 ub(3, alpha_channel_bit_depth_minus8); 2066 length = current->alpha_channel_bit_depth_minus8 + 9; 2067 ub(length, alpha_transparent_value); 2068 ub(length, alpha_opaque_value); 2069 flag(alpha_channel_incr_flag); 2070 flag(alpha_channel_clip_flag); 2071 if (current->alpha_channel_clip_flag) 2072 flag(alpha_channel_clip_type_flag); 2073 } else { 2074 infer(alpha_channel_use_idc, 2); 2075 infer(alpha_channel_incr_flag, 0); 2076 infer(alpha_channel_clip_flag, 0); 2077 } 2078 2079 return 0; 2080} 2081 2082static int FUNC(sei)(CodedBitstreamContext *ctx, RWContext *rw, 2083 H265RawSEI *current, int prefix) 2084{ 2085 int err; 2086 2087 if (prefix) 2088 HEADER("Prefix Supplemental Enhancement Information"); 2089 else 2090 HEADER("Suffix Supplemental Enhancement Information"); 2091 2092 CHECK(FUNC(nal_unit_header)(ctx, rw, ¤t->nal_unit_header, 2093 prefix ? HEVC_NAL_SEI_PREFIX 2094 : HEVC_NAL_SEI_SUFFIX)); 2095 2096 CHECK(FUNC_SEI(message_list)(ctx, rw, ¤t->message_list, prefix)); 2097 2098 CHECK(FUNC(rbsp_trailing_bits)(ctx, rw)); 2099 2100 return 0; 2101} 2102