1/* 2 * HEVC Parameter Set decoding 3 * 4 * Copyright (C) 2012 - 2013 Guillaume Martres 5 * Copyright (C) 2012 - 2013 Mickael Raulet 6 * Copyright (C) 2012 - 2013 Gildas Cocherel 7 * Copyright (C) 2013 Vittorio Giovara 8 * 9 * This file is part of FFmpeg. 10 * 11 * FFmpeg is free software; you can redistribute it and/or 12 * modify it under the terms of the GNU Lesser General Public 13 * License as published by the Free Software Foundation; either 14 * version 2.1 of the License, or (at your option) any later version. 15 * 16 * FFmpeg is distributed in the hope that it will be useful, 17 * but WITHOUT ANY WARRANTY; without even the implied warranty of 18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 19 * Lesser General Public License for more details. 20 * 21 * You should have received a copy of the GNU Lesser General Public 22 * License along with FFmpeg; if not, write to the Free Software 23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 24 */ 25 26#include "libavutil/imgutils.h" 27#include "golomb.h" 28#include "hevc_data.h" 29#include "hevc_ps.h" 30 31static const uint8_t default_scaling_list_intra[] = { 32 16, 16, 16, 16, 17, 18, 21, 24, 33 16, 16, 16, 16, 17, 19, 22, 25, 34 16, 16, 17, 18, 20, 22, 25, 29, 35 16, 16, 18, 21, 24, 27, 31, 36, 36 17, 17, 20, 24, 30, 35, 41, 47, 37 18, 19, 22, 27, 35, 44, 54, 65, 38 21, 22, 25, 31, 41, 54, 70, 88, 39 24, 25, 29, 36, 47, 65, 88, 115 40}; 41 42static const uint8_t default_scaling_list_inter[] = { 43 16, 16, 16, 16, 17, 18, 20, 24, 44 16, 16, 16, 17, 18, 20, 24, 25, 45 16, 16, 17, 18, 20, 24, 25, 28, 46 16, 17, 18, 20, 24, 25, 28, 33, 47 17, 18, 20, 24, 25, 28, 33, 41, 48 18, 20, 24, 25, 28, 33, 41, 54, 49 20, 24, 25, 28, 33, 41, 54, 71, 50 24, 25, 28, 33, 41, 54, 71, 91 51}; 52 53static const AVRational vui_sar[] = { 54 { 0, 1 }, 55 { 1, 1 }, 56 { 12, 11 }, 57 { 10, 11 }, 58 { 16, 11 }, 59 { 40, 33 }, 60 { 24, 11 }, 61 { 20, 11 }, 62 { 32, 11 }, 63 { 80, 33 }, 64 { 18, 11 }, 65 { 15, 11 }, 66 { 64, 33 }, 67 { 160, 99 }, 68 { 4, 3 }, 69 { 3, 2 }, 70 { 2, 1 }, 71}; 72 73static const uint8_t hevc_sub_width_c[] = { 74 1, 2, 2, 1 75}; 76 77static const uint8_t hevc_sub_height_c[] = { 78 1, 2, 1, 1 79}; 80 81static void remove_pps(HEVCParamSets *s, int id) 82{ 83 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data) 84 s->pps = NULL; 85 av_buffer_unref(&s->pps_list[id]); 86} 87 88static void remove_sps(HEVCParamSets *s, int id) 89{ 90 int i; 91 if (s->sps_list[id]) { 92 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data) 93 s->sps = NULL; 94 95 /* drop all PPS that depend on this SPS */ 96 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) 97 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == id) 98 remove_pps(s, i); 99 100 av_assert0(!(s->sps_list[id] && s->sps == (HEVCSPS*)s->sps_list[id]->data)); 101 } 102 av_buffer_unref(&s->sps_list[id]); 103} 104 105static void remove_vps(HEVCParamSets *s, int id) 106{ 107 int i; 108 if (s->vps_list[id]) { 109 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data) 110 s->vps = NULL; 111 112 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++) 113 if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id) 114 remove_sps(s, i); 115 } 116 av_buffer_unref(&s->vps_list[id]); 117} 118 119int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx, 120 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header) 121{ 122 uint8_t rps_predict = 0; 123 int delta_poc; 124 int k0 = 0; 125 int k = 0; 126 int i; 127 128 if (rps != sps->st_rps && sps->nb_st_rps) 129 rps_predict = get_bits1(gb); 130 131 if (rps_predict) { 132 const ShortTermRPS *rps_ridx; 133 int delta_rps; 134 unsigned abs_delta_rps; 135 uint8_t use_delta_flag = 0; 136 uint8_t delta_rps_sign; 137 138 if (is_slice_header) { 139 unsigned int delta_idx = get_ue_golomb_long(gb) + 1; 140 if (delta_idx > sps->nb_st_rps) { 141 av_log(avctx, AV_LOG_ERROR, 142 "Invalid value of delta_idx in slice header RPS: %d > %d.\n", 143 delta_idx, sps->nb_st_rps); 144 return AVERROR_INVALIDDATA; 145 } 146 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx]; 147 rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs; 148 } else 149 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1]; 150 151 delta_rps_sign = get_bits1(gb); 152 abs_delta_rps = get_ue_golomb_long(gb) + 1; 153 if (abs_delta_rps < 1 || abs_delta_rps > 32768) { 154 av_log(avctx, AV_LOG_ERROR, 155 "Invalid value of abs_delta_rps: %d\n", 156 abs_delta_rps); 157 return AVERROR_INVALIDDATA; 158 } 159 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps; 160 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) { 161 int used = rps->used[k] = get_bits1(gb); 162 163 if (!used) 164 use_delta_flag = get_bits1(gb); 165 166 if (used || use_delta_flag) { 167 if (i < rps_ridx->num_delta_pocs) 168 delta_poc = delta_rps + rps_ridx->delta_poc[i]; 169 else 170 delta_poc = delta_rps; 171 rps->delta_poc[k] = delta_poc; 172 if (delta_poc < 0) 173 k0++; 174 k++; 175 } 176 } 177 178 if (k >= FF_ARRAY_ELEMS(rps->used)) { 179 av_log(avctx, AV_LOG_ERROR, 180 "Invalid num_delta_pocs: %d\n", k); 181 return AVERROR_INVALIDDATA; 182 } 183 184 rps->num_delta_pocs = k; 185 rps->num_negative_pics = k0; 186 // sort in increasing order (smallest first) 187 if (rps->num_delta_pocs != 0) { 188 int used, tmp; 189 for (i = 1; i < rps->num_delta_pocs; i++) { 190 delta_poc = rps->delta_poc[i]; 191 used = rps->used[i]; 192 for (k = i - 1; k >= 0; k--) { 193 tmp = rps->delta_poc[k]; 194 if (delta_poc < tmp) { 195 rps->delta_poc[k + 1] = tmp; 196 rps->used[k + 1] = rps->used[k]; 197 rps->delta_poc[k] = delta_poc; 198 rps->used[k] = used; 199 } 200 } 201 } 202 } 203 if ((rps->num_negative_pics >> 1) != 0) { 204 int used; 205 k = rps->num_negative_pics - 1; 206 // flip the negative values to largest first 207 for (i = 0; i < rps->num_negative_pics >> 1; i++) { 208 delta_poc = rps->delta_poc[i]; 209 used = rps->used[i]; 210 rps->delta_poc[i] = rps->delta_poc[k]; 211 rps->used[i] = rps->used[k]; 212 rps->delta_poc[k] = delta_poc; 213 rps->used[k] = used; 214 k--; 215 } 216 } 217 } else { 218 unsigned int prev, nb_positive_pics; 219 rps->num_negative_pics = get_ue_golomb_long(gb); 220 nb_positive_pics = get_ue_golomb_long(gb); 221 222 if (rps->num_negative_pics >= HEVC_MAX_REFS || 223 nb_positive_pics >= HEVC_MAX_REFS) { 224 av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n"); 225 return AVERROR_INVALIDDATA; 226 } 227 228 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics; 229 if (rps->num_delta_pocs) { 230 prev = 0; 231 for (i = 0; i < rps->num_negative_pics; i++) { 232 delta_poc = get_ue_golomb_long(gb) + 1; 233 if (delta_poc < 1 || delta_poc > 32768) { 234 av_log(avctx, AV_LOG_ERROR, 235 "Invalid value of delta_poc: %d\n", 236 delta_poc); 237 return AVERROR_INVALIDDATA; 238 } 239 prev -= delta_poc; 240 rps->delta_poc[i] = prev; 241 rps->used[i] = get_bits1(gb); 242 } 243 prev = 0; 244 for (i = 0; i < nb_positive_pics; i++) { 245 delta_poc = get_ue_golomb_long(gb) + 1; 246 if (delta_poc < 1 || delta_poc > 32768) { 247 av_log(avctx, AV_LOG_ERROR, 248 "Invalid value of delta_poc: %d\n", 249 delta_poc); 250 return AVERROR_INVALIDDATA; 251 } 252 prev += delta_poc; 253 rps->delta_poc[rps->num_negative_pics + i] = prev; 254 rps->used[rps->num_negative_pics + i] = get_bits1(gb); 255 } 256 } 257 } 258 return 0; 259} 260 261 262static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx, 263 PTLCommon *ptl) 264{ 265 int i; 266 267 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 43 + 1) 268 return -1; 269 270 ptl->profile_space = get_bits(gb, 2); 271 ptl->tier_flag = get_bits1(gb); 272 ptl->profile_idc = get_bits(gb, 5); 273 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN) 274 av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n"); 275 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10) 276 av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n"); 277 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE) 278 av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n"); 279 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT) 280 av_log(avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n"); 281 else 282 av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc); 283 284 for (i = 0; i < 32; i++) { 285 ptl->profile_compatibility_flag[i] = get_bits1(gb); 286 287 if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i]) 288 ptl->profile_idc = i; 289 } 290 ptl->progressive_source_flag = get_bits1(gb); 291 ptl->interlaced_source_flag = get_bits1(gb); 292 ptl->non_packed_constraint_flag = get_bits1(gb); 293 ptl->frame_only_constraint_flag = get_bits1(gb); 294 295#define check_profile_idc(idc) \ 296 ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc] 297 298 if (check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(6) || 299 check_profile_idc(7) || check_profile_idc(8) || check_profile_idc(9) || 300 check_profile_idc(10)) { 301 302 ptl->max_12bit_constraint_flag = get_bits1(gb); 303 ptl->max_10bit_constraint_flag = get_bits1(gb); 304 ptl->max_8bit_constraint_flag = get_bits1(gb); 305 ptl->max_422chroma_constraint_flag = get_bits1(gb); 306 ptl->max_420chroma_constraint_flag = get_bits1(gb); 307 ptl->max_monochrome_constraint_flag = get_bits1(gb); 308 ptl->intra_constraint_flag = get_bits1(gb); 309 ptl->one_picture_only_constraint_flag = get_bits1(gb); 310 ptl->lower_bit_rate_constraint_flag = get_bits1(gb); 311 312 if (check_profile_idc(5) || check_profile_idc(9) || check_profile_idc(10)) { 313 ptl->max_14bit_constraint_flag = get_bits1(gb); 314 skip_bits_long(gb, 33); // XXX_reserved_zero_33bits[0..32] 315 } else { 316 skip_bits_long(gb, 34); // XXX_reserved_zero_34bits[0..33] 317 } 318 } else if (check_profile_idc(2)) { 319 skip_bits(gb, 7); 320 ptl->one_picture_only_constraint_flag = get_bits1(gb); 321 skip_bits_long(gb, 35); // XXX_reserved_zero_35bits[0..34] 322 } else { 323 skip_bits_long(gb, 43); // XXX_reserved_zero_43bits[0..42] 324 } 325 326 if (check_profile_idc(1) || check_profile_idc(2) || check_profile_idc(3) || 327 check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(9)) 328 ptl->inbld_flag = get_bits1(gb); 329 else 330 skip_bits1(gb); 331#undef check_profile_idc 332 333 return 0; 334} 335 336static int parse_ptl(GetBitContext *gb, AVCodecContext *avctx, 337 PTL *ptl, int max_num_sub_layers) 338{ 339 int i; 340 if (decode_profile_tier_level(gb, avctx, &ptl->general_ptl) < 0 || 341 get_bits_left(gb) < 8 + (8*2 * (max_num_sub_layers - 1 > 0))) { 342 av_log(avctx, AV_LOG_ERROR, "PTL information too short\n"); 343 return -1; 344 } 345 346 ptl->general_ptl.level_idc = get_bits(gb, 8); 347 348 for (i = 0; i < max_num_sub_layers - 1; i++) { 349 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb); 350 ptl->sub_layer_level_present_flag[i] = get_bits1(gb); 351 } 352 353 if (max_num_sub_layers - 1> 0) 354 for (i = max_num_sub_layers - 1; i < 8; i++) 355 skip_bits(gb, 2); // reserved_zero_2bits[i] 356 for (i = 0; i < max_num_sub_layers - 1; i++) { 357 if (ptl->sub_layer_profile_present_flag[i] && 358 decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]) < 0) { 359 av_log(avctx, AV_LOG_ERROR, 360 "PTL information for sublayer %i too short\n", i); 361 return -1; 362 } 363 if (ptl->sub_layer_level_present_flag[i]) { 364 if (get_bits_left(gb) < 8) { 365 av_log(avctx, AV_LOG_ERROR, 366 "Not enough data for sublayer %i level_idc\n", i); 367 return -1; 368 } else 369 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8); 370 } 371 } 372 373 return 0; 374} 375 376static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb, 377 int subpic_params_present) 378{ 379 int i; 380 381 for (i = 0; i < nb_cpb; i++) { 382 get_ue_golomb_long(gb); // bit_rate_value_minus1 383 get_ue_golomb_long(gb); // cpb_size_value_minus1 384 385 if (subpic_params_present) { 386 get_ue_golomb_long(gb); // cpb_size_du_value_minus1 387 get_ue_golomb_long(gb); // bit_rate_du_value_minus1 388 } 389 skip_bits1(gb); // cbr_flag 390 } 391} 392 393static int decode_hrd(GetBitContext *gb, int common_inf_present, 394 int max_sublayers) 395{ 396 int nal_params_present = 0, vcl_params_present = 0; 397 int subpic_params_present = 0; 398 int i; 399 400 if (common_inf_present) { 401 nal_params_present = get_bits1(gb); 402 vcl_params_present = get_bits1(gb); 403 404 if (nal_params_present || vcl_params_present) { 405 subpic_params_present = get_bits1(gb); 406 407 if (subpic_params_present) { 408 skip_bits(gb, 8); // tick_divisor_minus2 409 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1 410 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag 411 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1 412 } 413 414 skip_bits(gb, 4); // bit_rate_scale 415 skip_bits(gb, 4); // cpb_size_scale 416 417 if (subpic_params_present) 418 skip_bits(gb, 4); // cpb_size_du_scale 419 420 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1 421 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1 422 skip_bits(gb, 5); // dpb_output_delay_length_minus1 423 } 424 } 425 426 for (i = 0; i < max_sublayers; i++) { 427 int low_delay = 0; 428 unsigned int nb_cpb = 1; 429 int fixed_rate = get_bits1(gb); 430 431 if (!fixed_rate) 432 fixed_rate = get_bits1(gb); 433 434 if (fixed_rate) 435 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1 436 else 437 low_delay = get_bits1(gb); 438 439 if (!low_delay) { 440 nb_cpb = get_ue_golomb_long(gb) + 1; 441 if (nb_cpb < 1 || nb_cpb > 32) { 442 av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb); 443 return AVERROR_INVALIDDATA; 444 } 445 } 446 447 if (nal_params_present) 448 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present); 449 if (vcl_params_present) 450 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present); 451 } 452 return 0; 453} 454 455int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx, 456 HEVCParamSets *ps) 457{ 458 int i,j; 459 int vps_id = 0; 460 ptrdiff_t nal_size; 461 HEVCVPS *vps; 462 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps)); 463 464 if (!vps_buf) 465 return AVERROR(ENOMEM); 466 vps = (HEVCVPS*)vps_buf->data; 467 468 av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n"); 469 470 nal_size = gb->buffer_end - gb->buffer; 471 if (nal_size > sizeof(vps->data)) { 472 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized VPS " 473 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n", 474 nal_size, sizeof(vps->data)); 475 vps->data_size = sizeof(vps->data); 476 } else { 477 vps->data_size = nal_size; 478 } 479 memcpy(vps->data, gb->buffer, vps->data_size); 480 481 vps_id = get_bits(gb, 4); 482 483 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits 484 av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n"); 485 goto err; 486 } 487 488 vps->vps_max_layers = get_bits(gb, 6) + 1; 489 vps->vps_max_sub_layers = get_bits(gb, 3) + 1; 490 vps->vps_temporal_id_nesting_flag = get_bits1(gb); 491 492 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits 493 av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n"); 494 goto err; 495 } 496 497 if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) { 498 av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n", 499 vps->vps_max_sub_layers); 500 goto err; 501 } 502 503 if (parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers) < 0) 504 goto err; 505 506 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb); 507 508 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1; 509 for (; i < vps->vps_max_sub_layers; i++) { 510 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1; 511 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb); 512 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1; 513 514 if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) { 515 av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n", 516 vps->vps_max_dec_pic_buffering[i] - 1); 517 goto err; 518 } 519 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) { 520 av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n", 521 vps->vps_num_reorder_pics[i]); 522 if (avctx->err_recognition & AV_EF_EXPLODE) 523 goto err; 524 } 525 } 526 527 vps->vps_max_layer_id = get_bits(gb, 6); 528 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1; 529 if (vps->vps_num_layer_sets < 1 || vps->vps_num_layer_sets > 1024 || 530 (vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) { 531 av_log(avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n"); 532 goto err; 533 } 534 535 for (i = 1; i < vps->vps_num_layer_sets; i++) 536 for (j = 0; j <= vps->vps_max_layer_id; j++) 537 skip_bits(gb, 1); // layer_id_included_flag[i][j] 538 539 vps->vps_timing_info_present_flag = get_bits1(gb); 540 if (vps->vps_timing_info_present_flag) { 541 vps->vps_num_units_in_tick = get_bits_long(gb, 32); 542 vps->vps_time_scale = get_bits_long(gb, 32); 543 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb); 544 if (vps->vps_poc_proportional_to_timing_flag) 545 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1; 546 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb); 547 if (vps->vps_num_hrd_parameters > (unsigned)vps->vps_num_layer_sets) { 548 av_log(avctx, AV_LOG_ERROR, 549 "vps_num_hrd_parameters %d is invalid\n", vps->vps_num_hrd_parameters); 550 goto err; 551 } 552 for (i = 0; i < vps->vps_num_hrd_parameters; i++) { 553 int common_inf_present = 1; 554 555 get_ue_golomb_long(gb); // hrd_layer_set_idx 556 if (i) 557 common_inf_present = get_bits1(gb); 558 decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers); 559 } 560 } 561 get_bits1(gb); /* vps_extension_flag */ 562 563 if (get_bits_left(gb) < 0) { 564 av_log(avctx, AV_LOG_ERROR, 565 "Overread VPS by %d bits\n", -get_bits_left(gb)); 566 if (ps->vps_list[vps_id]) 567 goto err; 568 } 569 570 if (ps->vps_list[vps_id] && 571 !memcmp(ps->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) { 572 av_buffer_unref(&vps_buf); 573 } else { 574 remove_vps(ps, vps_id); 575 ps->vps_list[vps_id] = vps_buf; 576 } 577 578 return 0; 579 580err: 581 av_buffer_unref(&vps_buf); 582 return AVERROR_INVALIDDATA; 583} 584 585static void decode_vui(GetBitContext *gb, AVCodecContext *avctx, 586 int apply_defdispwin, HEVCSPS *sps) 587{ 588 VUI backup_vui, *vui = &sps->vui; 589 GetBitContext backup; 590 int sar_present, alt = 0; 591 592 av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n"); 593 594 sar_present = get_bits1(gb); 595 if (sar_present) { 596 uint8_t sar_idx = get_bits(gb, 8); 597 if (sar_idx < FF_ARRAY_ELEMS(vui_sar)) 598 vui->sar = vui_sar[sar_idx]; 599 else if (sar_idx == 255) { 600 vui->sar.num = get_bits(gb, 16); 601 vui->sar.den = get_bits(gb, 16); 602 } else 603 av_log(avctx, AV_LOG_WARNING, 604 "Unknown SAR index: %u.\n", sar_idx); 605 } 606 607 vui->overscan_info_present_flag = get_bits1(gb); 608 if (vui->overscan_info_present_flag) 609 vui->overscan_appropriate_flag = get_bits1(gb); 610 611 vui->video_signal_type_present_flag = get_bits1(gb); 612 if (vui->video_signal_type_present_flag) { 613 vui->video_format = get_bits(gb, 3); 614 vui->video_full_range_flag = get_bits1(gb); 615 vui->colour_description_present_flag = get_bits1(gb); 616 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P) 617 sps->pix_fmt = AV_PIX_FMT_YUVJ420P; 618 if (vui->colour_description_present_flag) { 619 vui->colour_primaries = get_bits(gb, 8); 620 vui->transfer_characteristic = get_bits(gb, 8); 621 vui->matrix_coeffs = get_bits(gb, 8); 622 623 // Set invalid values to "unspecified" 624 if (!av_color_primaries_name(vui->colour_primaries)) 625 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED; 626 if (!av_color_transfer_name(vui->transfer_characteristic)) 627 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED; 628 if (!av_color_space_name(vui->matrix_coeffs)) 629 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED; 630 if (vui->matrix_coeffs == AVCOL_SPC_RGB) { 631 switch (sps->pix_fmt) { 632 case AV_PIX_FMT_YUV444P: 633 sps->pix_fmt = AV_PIX_FMT_GBRP; 634 break; 635 case AV_PIX_FMT_YUV444P10: 636 sps->pix_fmt = AV_PIX_FMT_GBRP10; 637 break; 638 case AV_PIX_FMT_YUV444P12: 639 sps->pix_fmt = AV_PIX_FMT_GBRP12; 640 break; 641 } 642 } 643 } 644 } 645 646 vui->chroma_loc_info_present_flag = get_bits1(gb); 647 if (vui->chroma_loc_info_present_flag) { 648 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb); 649 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb); 650 } 651 652 vui->neutra_chroma_indication_flag = get_bits1(gb); 653 vui->field_seq_flag = get_bits1(gb); 654 vui->frame_field_info_present_flag = get_bits1(gb); 655 656 // Backup context in case an alternate header is detected 657 memcpy(&backup, gb, sizeof(backup)); 658 memcpy(&backup_vui, vui, sizeof(backup_vui)); 659 if (get_bits_left(gb) >= 68 && show_bits(gb, 21) == 0x100000) { 660 vui->default_display_window_flag = 0; 661 av_log(avctx, AV_LOG_WARNING, "Invalid default display window\n"); 662 } else 663 vui->default_display_window_flag = get_bits1(gb); 664 665 if (vui->default_display_window_flag) { 666 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc]; 667 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc]; 668 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * horiz_mult; 669 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * horiz_mult; 670 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * vert_mult; 671 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult; 672 673 if (apply_defdispwin && 674 avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) { 675 av_log(avctx, AV_LOG_DEBUG, 676 "discarding vui default display window, " 677 "original values are l:%u r:%u t:%u b:%u\n", 678 vui->def_disp_win.left_offset, 679 vui->def_disp_win.right_offset, 680 vui->def_disp_win.top_offset, 681 vui->def_disp_win.bottom_offset); 682 683 vui->def_disp_win.left_offset = 684 vui->def_disp_win.right_offset = 685 vui->def_disp_win.top_offset = 686 vui->def_disp_win.bottom_offset = 0; 687 } 688 } 689 690timing_info: 691 vui->vui_timing_info_present_flag = get_bits1(gb); 692 693 if (vui->vui_timing_info_present_flag) { 694 if( get_bits_left(gb) < 66 && !alt) { 695 // The alternate syntax seem to have timing info located 696 // at where def_disp_win is normally located 697 av_log(avctx, AV_LOG_WARNING, 698 "Strange VUI timing information, retrying...\n"); 699 memcpy(vui, &backup_vui, sizeof(backup_vui)); 700 memcpy(gb, &backup, sizeof(backup)); 701 alt = 1; 702 goto timing_info; 703 } 704 vui->vui_num_units_in_tick = get_bits_long(gb, 32); 705 vui->vui_time_scale = get_bits_long(gb, 32); 706 if (alt) { 707 av_log(avctx, AV_LOG_INFO, "Retry got %"PRIu32"/%"PRIu32" fps\n", 708 vui->vui_time_scale, vui->vui_num_units_in_tick); 709 } 710 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb); 711 if (vui->vui_poc_proportional_to_timing_flag) 712 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb); 713 vui->vui_hrd_parameters_present_flag = get_bits1(gb); 714 if (vui->vui_hrd_parameters_present_flag) 715 decode_hrd(gb, 1, sps->max_sub_layers); 716 } 717 718 vui->bitstream_restriction_flag = get_bits1(gb); 719 if (vui->bitstream_restriction_flag) { 720 if (get_bits_left(gb) < 8 && !alt) { 721 av_log(avctx, AV_LOG_WARNING, 722 "Strange VUI bitstream restriction information, retrying" 723 " from timing information...\n"); 724 memcpy(vui, &backup_vui, sizeof(backup_vui)); 725 memcpy(gb, &backup, sizeof(backup)); 726 alt = 1; 727 goto timing_info; 728 } 729 vui->tiles_fixed_structure_flag = get_bits1(gb); 730 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb); 731 vui->restricted_ref_pic_lists_flag = get_bits1(gb); 732 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb); 733 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb); 734 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb); 735 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb); 736 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb); 737 } 738 739 if (get_bits_left(gb) < 1 && !alt) { 740 // XXX: Alternate syntax when sps_range_extension_flag != 0? 741 av_log(avctx, AV_LOG_WARNING, 742 "Overread in VUI, retrying from timing information...\n"); 743 memcpy(vui, &backup_vui, sizeof(backup_vui)); 744 memcpy(gb, &backup, sizeof(backup)); 745 alt = 1; 746 goto timing_info; 747 } 748} 749 750static void set_default_scaling_list_data(ScalingList *sl) 751{ 752 int matrixId; 753 754 for (matrixId = 0; matrixId < 6; matrixId++) { 755 // 4x4 default is 16 756 memset(sl->sl[0][matrixId], 16, 16); 757 sl->sl_dc[0][matrixId] = 16; // default for 16x16 758 sl->sl_dc[1][matrixId] = 16; // default for 32x32 759 } 760 memcpy(sl->sl[1][0], default_scaling_list_intra, 64); 761 memcpy(sl->sl[1][1], default_scaling_list_intra, 64); 762 memcpy(sl->sl[1][2], default_scaling_list_intra, 64); 763 memcpy(sl->sl[1][3], default_scaling_list_inter, 64); 764 memcpy(sl->sl[1][4], default_scaling_list_inter, 64); 765 memcpy(sl->sl[1][5], default_scaling_list_inter, 64); 766 memcpy(sl->sl[2][0], default_scaling_list_intra, 64); 767 memcpy(sl->sl[2][1], default_scaling_list_intra, 64); 768 memcpy(sl->sl[2][2], default_scaling_list_intra, 64); 769 memcpy(sl->sl[2][3], default_scaling_list_inter, 64); 770 memcpy(sl->sl[2][4], default_scaling_list_inter, 64); 771 memcpy(sl->sl[2][5], default_scaling_list_inter, 64); 772 memcpy(sl->sl[3][0], default_scaling_list_intra, 64); 773 memcpy(sl->sl[3][1], default_scaling_list_intra, 64); 774 memcpy(sl->sl[3][2], default_scaling_list_intra, 64); 775 memcpy(sl->sl[3][3], default_scaling_list_inter, 64); 776 memcpy(sl->sl[3][4], default_scaling_list_inter, 64); 777 memcpy(sl->sl[3][5], default_scaling_list_inter, 64); 778} 779 780static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl, HEVCSPS *sps) 781{ 782 uint8_t scaling_list_pred_mode_flag; 783 uint8_t scaling_list_dc_coef[2][6]; 784 int size_id, matrix_id, pos; 785 int i; 786 787 for (size_id = 0; size_id < 4; size_id++) 788 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) { 789 scaling_list_pred_mode_flag = get_bits1(gb); 790 if (!scaling_list_pred_mode_flag) { 791 unsigned int delta = get_ue_golomb_long(gb); 792 /* Only need to handle non-zero delta. Zero means default, 793 * which should already be in the arrays. */ 794 if (delta) { 795 // Copy from previous array. 796 delta *= (size_id == 3) ? 3 : 1; 797 if (matrix_id < delta) { 798 av_log(avctx, AV_LOG_ERROR, 799 "Invalid delta in scaling list data: %d.\n", delta); 800 return AVERROR_INVALIDDATA; 801 } 802 803 memcpy(sl->sl[size_id][matrix_id], 804 sl->sl[size_id][matrix_id - delta], 805 size_id > 0 ? 64 : 16); 806 if (size_id > 1) 807 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta]; 808 } 809 } else { 810 int next_coef, coef_num; 811 int32_t scaling_list_delta_coef; 812 813 next_coef = 8; 814 coef_num = FFMIN(64, 1 << (4 + (size_id << 1))); 815 if (size_id > 1) { 816 int scaling_list_coeff_minus8 = get_se_golomb(gb); 817 if (scaling_list_coeff_minus8 < -7 || 818 scaling_list_coeff_minus8 > 247) 819 return AVERROR_INVALIDDATA; 820 scaling_list_dc_coef[size_id - 2][matrix_id] = scaling_list_coeff_minus8 + 8; 821 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id]; 822 sl->sl_dc[size_id - 2][matrix_id] = next_coef; 823 } 824 for (i = 0; i < coef_num; i++) { 825 if (size_id == 0) 826 pos = 4 * ff_hevc_diag_scan4x4_y[i] + 827 ff_hevc_diag_scan4x4_x[i]; 828 else 829 pos = 8 * ff_hevc_diag_scan8x8_y[i] + 830 ff_hevc_diag_scan8x8_x[i]; 831 832 scaling_list_delta_coef = get_se_golomb(gb); 833 next_coef = (next_coef + 256U + scaling_list_delta_coef) % 256; 834 sl->sl[size_id][matrix_id][pos] = next_coef; 835 } 836 } 837 } 838 839 if (sps->chroma_format_idc == 3) { 840 for (i = 0; i < 64; i++) { 841 sl->sl[3][1][i] = sl->sl[2][1][i]; 842 sl->sl[3][2][i] = sl->sl[2][2][i]; 843 sl->sl[3][4][i] = sl->sl[2][4][i]; 844 sl->sl[3][5][i] = sl->sl[2][5][i]; 845 } 846 sl->sl_dc[1][1] = sl->sl_dc[0][1]; 847 sl->sl_dc[1][2] = sl->sl_dc[0][2]; 848 sl->sl_dc[1][4] = sl->sl_dc[0][4]; 849 sl->sl_dc[1][5] = sl->sl_dc[0][5]; 850 } 851 852 853 return 0; 854} 855 856static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps) 857{ 858 const AVPixFmtDescriptor *desc; 859 switch (sps->bit_depth) { 860 case 8: 861 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8; 862 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P; 863 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P; 864 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P; 865 break; 866 case 9: 867 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY9; 868 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9; 869 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9; 870 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9; 871 break; 872 case 10: 873 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10; 874 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10; 875 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10; 876 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10; 877 break; 878 case 12: 879 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12; 880 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12; 881 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12; 882 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12; 883 break; 884 default: 885 av_log(avctx, AV_LOG_ERROR, 886 "The following bit-depths are currently specified: 8, 9, 10 and 12 bits, " 887 "chroma_format_idc is %d, depth is %d\n", 888 sps->chroma_format_idc, sps->bit_depth); 889 return AVERROR_INVALIDDATA; 890 } 891 892 desc = av_pix_fmt_desc_get(sps->pix_fmt); 893 if (!desc) 894 return AVERROR(EINVAL); 895 896 sps->hshift[0] = sps->vshift[0] = 0; 897 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w; 898 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h; 899 900 sps->pixel_shift = sps->bit_depth > 8; 901 902 return 0; 903} 904 905int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id, 906 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx) 907{ 908 HEVCWindow *ow; 909 int ret = 0; 910 int log2_diff_max_min_transform_block_size; 911 int bit_depth_chroma, start, vui_present, sublayer_ordering_info; 912 int i; 913 914 // Coded parameters 915 916 sps->vps_id = get_bits(gb, 4); 917 918 if (vps_list && !vps_list[sps->vps_id]) { 919 av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n", 920 sps->vps_id); 921 return AVERROR_INVALIDDATA; 922 } 923 924 sps->max_sub_layers = get_bits(gb, 3) + 1; 925 if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) { 926 av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n", 927 sps->max_sub_layers); 928 return AVERROR_INVALIDDATA; 929 } 930 931 sps->temporal_id_nesting_flag = get_bits(gb, 1); 932 933 if ((ret = parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers)) < 0) 934 return ret; 935 936 *sps_id = get_ue_golomb_long(gb); 937 if (*sps_id >= HEVC_MAX_SPS_COUNT) { 938 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id); 939 return AVERROR_INVALIDDATA; 940 } 941 942 sps->chroma_format_idc = get_ue_golomb_long(gb); 943 if (sps->chroma_format_idc > 3U) { 944 av_log(avctx, AV_LOG_ERROR, "chroma_format_idc %d is invalid\n", sps->chroma_format_idc); 945 return AVERROR_INVALIDDATA; 946 } 947 948 if (sps->chroma_format_idc == 3) 949 sps->separate_colour_plane_flag = get_bits1(gb); 950 951 if (sps->separate_colour_plane_flag) 952 sps->chroma_format_idc = 0; 953 954 sps->width = get_ue_golomb_long(gb); 955 sps->height = get_ue_golomb_long(gb); 956 if ((ret = av_image_check_size(sps->width, 957 sps->height, 0, avctx)) < 0) 958 return ret; 959 960 if (get_bits1(gb)) { // pic_conformance_flag 961 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc]; 962 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc]; 963 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * horiz_mult; 964 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * horiz_mult; 965 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * vert_mult; 966 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult; 967 968 if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) { 969 av_log(avctx, AV_LOG_DEBUG, 970 "discarding sps conformance window, " 971 "original values are l:%u r:%u t:%u b:%u\n", 972 sps->pic_conf_win.left_offset, 973 sps->pic_conf_win.right_offset, 974 sps->pic_conf_win.top_offset, 975 sps->pic_conf_win.bottom_offset); 976 977 sps->pic_conf_win.left_offset = 978 sps->pic_conf_win.right_offset = 979 sps->pic_conf_win.top_offset = 980 sps->pic_conf_win.bottom_offset = 0; 981 } 982 sps->output_window = sps->pic_conf_win; 983 } 984 985 sps->bit_depth = get_ue_golomb_long(gb) + 8; 986 bit_depth_chroma = get_ue_golomb_long(gb) + 8; 987 if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) { 988 av_log(avctx, AV_LOG_ERROR, 989 "Luma bit depth (%d) is different from chroma bit depth (%d), " 990 "this is unsupported.\n", 991 sps->bit_depth, bit_depth_chroma); 992 return AVERROR_INVALIDDATA; 993 } 994 sps->bit_depth_chroma = bit_depth_chroma; 995 996 ret = map_pixel_format(avctx, sps); 997 if (ret < 0) 998 return ret; 999 1000 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4; 1001 if (sps->log2_max_poc_lsb > 16) { 1002 av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n", 1003 sps->log2_max_poc_lsb - 4); 1004 return AVERROR_INVALIDDATA; 1005 } 1006 1007 sublayer_ordering_info = get_bits1(gb); 1008 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1; 1009 for (i = start; i < sps->max_sub_layers; i++) { 1010 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1; 1011 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb); 1012 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1; 1013 if (sps->temporal_layer[i].max_dec_pic_buffering > (unsigned)HEVC_MAX_DPB_SIZE) { 1014 av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n", 1015 sps->temporal_layer[i].max_dec_pic_buffering - 1U); 1016 return AVERROR_INVALIDDATA; 1017 } 1018 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) { 1019 av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n", 1020 sps->temporal_layer[i].num_reorder_pics); 1021 if (avctx->err_recognition & AV_EF_EXPLODE || 1022 sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) { 1023 return AVERROR_INVALIDDATA; 1024 } 1025 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1; 1026 } 1027 } 1028 1029 if (!sublayer_ordering_info) { 1030 for (i = 0; i < start; i++) { 1031 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering; 1032 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics; 1033 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase; 1034 } 1035 } 1036 1037 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3; 1038 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb); 1039 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2; 1040 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb); 1041 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size + 1042 sps->log2_min_tb_size; 1043 1044 if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) { 1045 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size); 1046 return AVERROR_INVALIDDATA; 1047 } 1048 1049 if (sps->log2_diff_max_min_coding_block_size > 30) { 1050 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_coding_block_size", sps->log2_diff_max_min_coding_block_size); 1051 return AVERROR_INVALIDDATA; 1052 } 1053 1054 if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) { 1055 av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size"); 1056 return AVERROR_INVALIDDATA; 1057 } 1058 1059 if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) { 1060 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size); 1061 return AVERROR_INVALIDDATA; 1062 } 1063 1064 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb); 1065 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb); 1066 1067 sps->scaling_list_enable_flag = get_bits1(gb); 1068 if (sps->scaling_list_enable_flag) { 1069 set_default_scaling_list_data(&sps->scaling_list); 1070 1071 if (get_bits1(gb)) { 1072 ret = scaling_list_data(gb, avctx, &sps->scaling_list, sps); 1073 if (ret < 0) 1074 return ret; 1075 } 1076 } 1077 1078 sps->amp_enabled_flag = get_bits1(gb); 1079 sps->sao_enabled = get_bits1(gb); 1080 1081 sps->pcm_enabled_flag = get_bits1(gb); 1082 if (sps->pcm_enabled_flag) { 1083 sps->pcm.bit_depth = get_bits(gb, 4) + 1; 1084 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1; 1085 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3; 1086 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size + 1087 get_ue_golomb_long(gb); 1088 if (FFMAX(sps->pcm.bit_depth, sps->pcm.bit_depth_chroma) > sps->bit_depth) { 1089 av_log(avctx, AV_LOG_ERROR, 1090 "PCM bit depth (%d, %d) is greater than normal bit depth (%d)\n", 1091 sps->pcm.bit_depth, sps->pcm.bit_depth_chroma, sps->bit_depth); 1092 return AVERROR_INVALIDDATA; 1093 } 1094 1095 sps->pcm.loop_filter_disable_flag = get_bits1(gb); 1096 } 1097 1098 sps->nb_st_rps = get_ue_golomb_long(gb); 1099 if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_REF_PIC_SETS) { 1100 av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n", 1101 sps->nb_st_rps); 1102 return AVERROR_INVALIDDATA; 1103 } 1104 for (i = 0; i < sps->nb_st_rps; i++) { 1105 if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i], 1106 sps, 0)) < 0) 1107 return ret; 1108 } 1109 1110 sps->long_term_ref_pics_present_flag = get_bits1(gb); 1111 if (sps->long_term_ref_pics_present_flag) { 1112 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb); 1113 if (sps->num_long_term_ref_pics_sps > HEVC_MAX_LONG_TERM_REF_PICS) { 1114 av_log(avctx, AV_LOG_ERROR, "Too many long term ref pics: %d.\n", 1115 sps->num_long_term_ref_pics_sps); 1116 return AVERROR_INVALIDDATA; 1117 } 1118 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) { 1119 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb); 1120 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb); 1121 } 1122 } 1123 1124 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb); 1125 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb); 1126 sps->vui.sar = (AVRational){0, 1}; 1127 vui_present = get_bits1(gb); 1128 if (vui_present) 1129 decode_vui(gb, avctx, apply_defdispwin, sps); 1130 1131 if (get_bits1(gb)) { // sps_extension_flag 1132 sps->sps_range_extension_flag = get_bits1(gb); 1133 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7); 1134 if (sps->sps_range_extension_flag) { 1135 sps->transform_skip_rotation_enabled_flag = get_bits1(gb); 1136 sps->transform_skip_context_enabled_flag = get_bits1(gb); 1137 sps->implicit_rdpcm_enabled_flag = get_bits1(gb); 1138 1139 sps->explicit_rdpcm_enabled_flag = get_bits1(gb); 1140 1141 sps->extended_precision_processing_flag = get_bits1(gb); 1142 if (sps->extended_precision_processing_flag) 1143 av_log(avctx, AV_LOG_WARNING, 1144 "extended_precision_processing_flag not yet implemented\n"); 1145 1146 sps->intra_smoothing_disabled_flag = get_bits1(gb); 1147 sps->high_precision_offsets_enabled_flag = get_bits1(gb); 1148 if (sps->high_precision_offsets_enabled_flag) 1149 av_log(avctx, AV_LOG_WARNING, 1150 "high_precision_offsets_enabled_flag not yet implemented\n"); 1151 1152 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb); 1153 1154 sps->cabac_bypass_alignment_enabled_flag = get_bits1(gb); 1155 if (sps->cabac_bypass_alignment_enabled_flag) 1156 av_log(avctx, AV_LOG_WARNING, 1157 "cabac_bypass_alignment_enabled_flag not yet implemented\n"); 1158 } 1159 } 1160 if (apply_defdispwin) { 1161 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset; 1162 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset; 1163 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset; 1164 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset; 1165 } 1166 1167 ow = &sps->output_window; 1168 if (ow->left_offset >= INT_MAX - ow->right_offset || 1169 ow->top_offset >= INT_MAX - ow->bottom_offset || 1170 ow->left_offset + ow->right_offset >= sps->width || 1171 ow->top_offset + ow->bottom_offset >= sps->height) { 1172 av_log(avctx, AV_LOG_WARNING, "Invalid cropping offsets: %u/%u/%u/%u\n", 1173 ow->left_offset, ow->right_offset, ow->top_offset, ow->bottom_offset); 1174 if (avctx->err_recognition & AV_EF_EXPLODE) { 1175 return AVERROR_INVALIDDATA; 1176 } 1177 av_log(avctx, AV_LOG_WARNING, 1178 "Displaying the whole video surface.\n"); 1179 memset(ow, 0, sizeof(*ow)); 1180 memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win)); 1181 } 1182 1183 // Inferred parameters 1184 sps->log2_ctb_size = sps->log2_min_cb_size + 1185 sps->log2_diff_max_min_coding_block_size; 1186 sps->log2_min_pu_size = sps->log2_min_cb_size - 1; 1187 1188 if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) { 1189 av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size); 1190 return AVERROR_INVALIDDATA; 1191 } 1192 if (sps->log2_ctb_size < 4) { 1193 av_log(avctx, 1194 AV_LOG_ERROR, 1195 "log2_ctb_size %d differs from the bounds of any known profile\n", 1196 sps->log2_ctb_size); 1197 avpriv_request_sample(avctx, "log2_ctb_size %d", sps->log2_ctb_size); 1198 return AVERROR_INVALIDDATA; 1199 } 1200 1201 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size; 1202 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size; 1203 sps->ctb_size = sps->ctb_width * sps->ctb_height; 1204 1205 sps->min_cb_width = sps->width >> sps->log2_min_cb_size; 1206 sps->min_cb_height = sps->height >> sps->log2_min_cb_size; 1207 sps->min_tb_width = sps->width >> sps->log2_min_tb_size; 1208 sps->min_tb_height = sps->height >> sps->log2_min_tb_size; 1209 sps->min_pu_width = sps->width >> sps->log2_min_pu_size; 1210 sps->min_pu_height = sps->height >> sps->log2_min_pu_size; 1211 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1; 1212 1213 sps->qp_bd_offset = 6 * (sps->bit_depth - 8); 1214 1215 if (av_mod_uintp2(sps->width, sps->log2_min_cb_size) || 1216 av_mod_uintp2(sps->height, sps->log2_min_cb_size)) { 1217 av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n"); 1218 return AVERROR_INVALIDDATA; 1219 } 1220 1221 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) { 1222 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n", 1223 sps->max_transform_hierarchy_depth_inter); 1224 return AVERROR_INVALIDDATA; 1225 } 1226 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) { 1227 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n", 1228 sps->max_transform_hierarchy_depth_intra); 1229 return AVERROR_INVALIDDATA; 1230 } 1231 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) { 1232 av_log(avctx, AV_LOG_ERROR, 1233 "max transform block size out of range: %d\n", 1234 sps->log2_max_trafo_size); 1235 return AVERROR_INVALIDDATA; 1236 } 1237 1238 if (get_bits_left(gb) < 0) { 1239 av_log(avctx, AV_LOG_ERROR, 1240 "Overread SPS by %d bits\n", -get_bits_left(gb)); 1241 return AVERROR_INVALIDDATA; 1242 } 1243 1244 return 0; 1245} 1246 1247int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx, 1248 HEVCParamSets *ps, int apply_defdispwin) 1249{ 1250 HEVCSPS *sps; 1251 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps)); 1252 unsigned int sps_id; 1253 int ret; 1254 ptrdiff_t nal_size; 1255 1256 if (!sps_buf) 1257 return AVERROR(ENOMEM); 1258 sps = (HEVCSPS*)sps_buf->data; 1259 1260 av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n"); 1261 1262 nal_size = gb->buffer_end - gb->buffer; 1263 if (nal_size > sizeof(sps->data)) { 1264 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized SPS " 1265 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n", 1266 nal_size, sizeof(sps->data)); 1267 sps->data_size = sizeof(sps->data); 1268 } else { 1269 sps->data_size = nal_size; 1270 } 1271 memcpy(sps->data, gb->buffer, sps->data_size); 1272 1273 ret = ff_hevc_parse_sps(sps, gb, &sps_id, 1274 apply_defdispwin, 1275 ps->vps_list, avctx); 1276 if (ret < 0) { 1277 av_buffer_unref(&sps_buf); 1278 return ret; 1279 } 1280 1281 if (avctx->debug & FF_DEBUG_BITSTREAM) { 1282 av_log(avctx, AV_LOG_DEBUG, 1283 "Parsed SPS: id %d; coded wxh: %dx%d; " 1284 "cropped wxh: %dx%d; pix_fmt: %s.\n", 1285 sps_id, sps->width, sps->height, 1286 sps->width - (sps->output_window.left_offset + sps->output_window.right_offset), 1287 sps->height - (sps->output_window.top_offset + sps->output_window.bottom_offset), 1288 av_get_pix_fmt_name(sps->pix_fmt)); 1289 } 1290 1291 /* check if this is a repeat of an already parsed SPS, then keep the 1292 * original one. 1293 * otherwise drop all PPSes that depend on it */ 1294 if (ps->sps_list[sps_id] && 1295 !memcmp(ps->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) { 1296 av_buffer_unref(&sps_buf); 1297 } else { 1298 remove_sps(ps, sps_id); 1299 ps->sps_list[sps_id] = sps_buf; 1300 } 1301 1302 return 0; 1303} 1304 1305static void hevc_pps_free(void *opaque, uint8_t *data) 1306{ 1307 HEVCPPS *pps = (HEVCPPS*)data; 1308 1309 av_freep(&pps->column_width); 1310 av_freep(&pps->row_height); 1311 av_freep(&pps->col_bd); 1312 av_freep(&pps->row_bd); 1313 av_freep(&pps->col_idxX); 1314 av_freep(&pps->ctb_addr_rs_to_ts); 1315 av_freep(&pps->ctb_addr_ts_to_rs); 1316 av_freep(&pps->tile_pos_rs); 1317 av_freep(&pps->tile_id); 1318 av_freep(&pps->min_tb_addr_zs_tab); 1319 1320 av_freep(&pps); 1321} 1322 1323static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx, 1324 HEVCPPS *pps, HEVCSPS *sps) { 1325 int i; 1326 1327 if (pps->transform_skip_enabled_flag) { 1328 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2; 1329 } 1330 pps->cross_component_prediction_enabled_flag = get_bits1(gb); 1331 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb); 1332 if (pps->chroma_qp_offset_list_enabled_flag) { 1333 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb); 1334 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb); 1335 if (pps->chroma_qp_offset_list_len_minus1 > 5) { 1336 av_log(avctx, AV_LOG_ERROR, 1337 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n"); 1338 return AVERROR_INVALIDDATA; 1339 } 1340 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) { 1341 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb); 1342 if (pps->cb_qp_offset_list[i]) { 1343 av_log(avctx, AV_LOG_WARNING, 1344 "cb_qp_offset_list not tested yet.\n"); 1345 } 1346 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb); 1347 if (pps->cr_qp_offset_list[i]) { 1348 av_log(avctx, AV_LOG_WARNING, 1349 "cb_qp_offset_list not tested yet.\n"); 1350 } 1351 } 1352 } 1353 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb); 1354 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb); 1355 1356 if ( pps->log2_sao_offset_scale_luma > FFMAX(sps->bit_depth - 10, 0) 1357 || pps->log2_sao_offset_scale_chroma > FFMAX(sps->bit_depth_chroma - 10, 0) 1358 ) 1359 return AVERROR_INVALIDDATA; 1360 1361 return(0); 1362} 1363 1364static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb, 1365 HEVCPPS *pps, HEVCSPS *sps) 1366{ 1367 int log2_diff; 1368 int pic_area_in_ctbs; 1369 int i, j, x, y, ctb_addr_rs, tile_id; 1370 1371 // Inferred parameters 1372 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd)); 1373 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd)); 1374 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX)); 1375 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) 1376 return AVERROR(ENOMEM); 1377 1378 if (pps->uniform_spacing_flag) { 1379 if (!pps->column_width) { 1380 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width)); 1381 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height)); 1382 } 1383 if (!pps->column_width || !pps->row_height) 1384 return AVERROR(ENOMEM); 1385 1386 for (i = 0; i < pps->num_tile_columns; i++) { 1387 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns - 1388 (i * sps->ctb_width) / pps->num_tile_columns; 1389 } 1390 1391 for (i = 0; i < pps->num_tile_rows; i++) { 1392 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows - 1393 (i * sps->ctb_height) / pps->num_tile_rows; 1394 } 1395 } 1396 1397 pps->col_bd[0] = 0; 1398 for (i = 0; i < pps->num_tile_columns; i++) 1399 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i]; 1400 1401 pps->row_bd[0] = 0; 1402 for (i = 0; i < pps->num_tile_rows; i++) 1403 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i]; 1404 1405 for (i = 0, j = 0; i < sps->ctb_width; i++) { 1406 if (i > pps->col_bd[j]) 1407 j++; 1408 pps->col_idxX[i] = j; 1409 } 1410 1411 /** 1412 * 6.5 1413 */ 1414 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height; 1415 1416 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts)); 1417 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs)); 1418 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id)); 1419 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab)); 1420 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs || 1421 !pps->tile_id || !pps->min_tb_addr_zs_tab) { 1422 return AVERROR(ENOMEM); 1423 } 1424 1425 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) { 1426 int tb_x = ctb_addr_rs % sps->ctb_width; 1427 int tb_y = ctb_addr_rs / sps->ctb_width; 1428 int tile_x = 0; 1429 int tile_y = 0; 1430 int val = 0; 1431 1432 for (i = 0; i < pps->num_tile_columns; i++) { 1433 if (tb_x < pps->col_bd[i + 1]) { 1434 tile_x = i; 1435 break; 1436 } 1437 } 1438 1439 for (i = 0; i < pps->num_tile_rows; i++) { 1440 if (tb_y < pps->row_bd[i + 1]) { 1441 tile_y = i; 1442 break; 1443 } 1444 } 1445 1446 for (i = 0; i < tile_x; i++) 1447 val += pps->row_height[tile_y] * pps->column_width[i]; 1448 for (i = 0; i < tile_y; i++) 1449 val += sps->ctb_width * pps->row_height[i]; 1450 1451 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] + 1452 tb_x - pps->col_bd[tile_x]; 1453 1454 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val; 1455 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs; 1456 } 1457 1458 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++) 1459 for (i = 0; i < pps->num_tile_columns; i++, tile_id++) 1460 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++) 1461 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++) 1462 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id; 1463 1464 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs)); 1465 if (!pps->tile_pos_rs) 1466 return AVERROR(ENOMEM); 1467 1468 for (j = 0; j < pps->num_tile_rows; j++) 1469 for (i = 0; i < pps->num_tile_columns; i++) 1470 pps->tile_pos_rs[j * pps->num_tile_columns + i] = 1471 pps->row_bd[j] * sps->ctb_width + pps->col_bd[i]; 1472 1473 log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size; 1474 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1]; 1475 for (y = 0; y < sps->tb_mask+2; y++) { 1476 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1; 1477 pps->min_tb_addr_zs_tab[y] = -1; 1478 } 1479 for (y = 0; y < sps->tb_mask+1; y++) { 1480 for (x = 0; x < sps->tb_mask+1; x++) { 1481 int tb_x = x >> log2_diff; 1482 int tb_y = y >> log2_diff; 1483 int rs = sps->ctb_width * tb_y + tb_x; 1484 int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2); 1485 for (i = 0; i < log2_diff; i++) { 1486 int m = 1 << i; 1487 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0); 1488 } 1489 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val; 1490 } 1491 } 1492 1493 return 0; 1494} 1495 1496int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx, 1497 HEVCParamSets *ps) 1498{ 1499 HEVCSPS *sps = NULL; 1500 int i, ret = 0; 1501 unsigned int pps_id = 0; 1502 ptrdiff_t nal_size; 1503 unsigned log2_parallel_merge_level_minus2; 1504 1505 AVBufferRef *pps_buf; 1506 HEVCPPS *pps = av_mallocz(sizeof(*pps)); 1507 1508 if (!pps) 1509 return AVERROR(ENOMEM); 1510 1511 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps), 1512 hevc_pps_free, NULL, 0); 1513 if (!pps_buf) { 1514 av_freep(&pps); 1515 return AVERROR(ENOMEM); 1516 } 1517 1518 av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n"); 1519 1520 nal_size = gb->buffer_end - gb->buffer; 1521 if (nal_size > sizeof(pps->data)) { 1522 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized PPS " 1523 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n", 1524 nal_size, sizeof(pps->data)); 1525 pps->data_size = sizeof(pps->data); 1526 } else { 1527 pps->data_size = nal_size; 1528 } 1529 memcpy(pps->data, gb->buffer, pps->data_size); 1530 1531 // Default values 1532 pps->loop_filter_across_tiles_enabled_flag = 1; 1533 pps->num_tile_columns = 1; 1534 pps->num_tile_rows = 1; 1535 pps->uniform_spacing_flag = 1; 1536 pps->disable_dbf = 0; 1537 pps->beta_offset = 0; 1538 pps->tc_offset = 0; 1539 pps->log2_max_transform_skip_block_size = 2; 1540 1541 // Coded parameters 1542 pps_id = get_ue_golomb_long(gb); 1543 if (pps_id >= HEVC_MAX_PPS_COUNT) { 1544 av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id); 1545 ret = AVERROR_INVALIDDATA; 1546 goto err; 1547 } 1548 pps->sps_id = get_ue_golomb_long(gb); 1549 if (pps->sps_id >= HEVC_MAX_SPS_COUNT) { 1550 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id); 1551 ret = AVERROR_INVALIDDATA; 1552 goto err; 1553 } 1554 if (!ps->sps_list[pps->sps_id]) { 1555 av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id); 1556 ret = AVERROR_INVALIDDATA; 1557 goto err; 1558 } 1559 sps = (HEVCSPS *)ps->sps_list[pps->sps_id]->data; 1560 1561 pps->dependent_slice_segments_enabled_flag = get_bits1(gb); 1562 pps->output_flag_present_flag = get_bits1(gb); 1563 pps->num_extra_slice_header_bits = get_bits(gb, 3); 1564 1565 pps->sign_data_hiding_flag = get_bits1(gb); 1566 1567 pps->cabac_init_present_flag = get_bits1(gb); 1568 1569 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1; 1570 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1; 1571 1572 pps->pic_init_qp_minus26 = get_se_golomb(gb); 1573 1574 pps->constrained_intra_pred_flag = get_bits1(gb); 1575 pps->transform_skip_enabled_flag = get_bits1(gb); 1576 1577 pps->cu_qp_delta_enabled_flag = get_bits1(gb); 1578 pps->diff_cu_qp_delta_depth = 0; 1579 if (pps->cu_qp_delta_enabled_flag) 1580 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb); 1581 1582 if (pps->diff_cu_qp_delta_depth < 0 || 1583 pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) { 1584 av_log(avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n", 1585 pps->diff_cu_qp_delta_depth); 1586 ret = AVERROR_INVALIDDATA; 1587 goto err; 1588 } 1589 1590 pps->cb_qp_offset = get_se_golomb(gb); 1591 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) { 1592 av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n", 1593 pps->cb_qp_offset); 1594 ret = AVERROR_INVALIDDATA; 1595 goto err; 1596 } 1597 pps->cr_qp_offset = get_se_golomb(gb); 1598 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) { 1599 av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n", 1600 pps->cr_qp_offset); 1601 ret = AVERROR_INVALIDDATA; 1602 goto err; 1603 } 1604 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb); 1605 1606 pps->weighted_pred_flag = get_bits1(gb); 1607 pps->weighted_bipred_flag = get_bits1(gb); 1608 1609 pps->transquant_bypass_enable_flag = get_bits1(gb); 1610 pps->tiles_enabled_flag = get_bits1(gb); 1611 pps->entropy_coding_sync_enabled_flag = get_bits1(gb); 1612 1613 if (pps->tiles_enabled_flag) { 1614 int num_tile_columns_minus1 = get_ue_golomb(gb); 1615 int num_tile_rows_minus1 = get_ue_golomb(gb); 1616 1617 if (num_tile_columns_minus1 < 0 || 1618 num_tile_columns_minus1 >= sps->ctb_width) { 1619 av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n", 1620 num_tile_columns_minus1); 1621 ret = num_tile_columns_minus1 < 0 ? num_tile_columns_minus1 : AVERROR_INVALIDDATA; 1622 goto err; 1623 } 1624 if (num_tile_rows_minus1 < 0 || 1625 num_tile_rows_minus1 >= sps->ctb_height) { 1626 av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n", 1627 num_tile_rows_minus1); 1628 ret = num_tile_rows_minus1 < 0 ? num_tile_rows_minus1 : AVERROR_INVALIDDATA; 1629 goto err; 1630 } 1631 pps->num_tile_columns = num_tile_columns_minus1 + 1; 1632 pps->num_tile_rows = num_tile_rows_minus1 + 1; 1633 1634 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width)); 1635 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height)); 1636 if (!pps->column_width || !pps->row_height) { 1637 ret = AVERROR(ENOMEM); 1638 goto err; 1639 } 1640 1641 pps->uniform_spacing_flag = get_bits1(gb); 1642 if (!pps->uniform_spacing_flag) { 1643 uint64_t sum = 0; 1644 for (i = 0; i < pps->num_tile_columns - 1; i++) { 1645 pps->column_width[i] = get_ue_golomb_long(gb) + 1; 1646 sum += pps->column_width[i]; 1647 } 1648 if (sum >= sps->ctb_width) { 1649 av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n"); 1650 ret = AVERROR_INVALIDDATA; 1651 goto err; 1652 } 1653 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum; 1654 1655 sum = 0; 1656 for (i = 0; i < pps->num_tile_rows - 1; i++) { 1657 pps->row_height[i] = get_ue_golomb_long(gb) + 1; 1658 sum += pps->row_height[i]; 1659 } 1660 if (sum >= sps->ctb_height) { 1661 av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n"); 1662 ret = AVERROR_INVALIDDATA; 1663 goto err; 1664 } 1665 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum; 1666 } 1667 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb); 1668 } 1669 1670 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb); 1671 1672 pps->deblocking_filter_control_present_flag = get_bits1(gb); 1673 if (pps->deblocking_filter_control_present_flag) { 1674 pps->deblocking_filter_override_enabled_flag = get_bits1(gb); 1675 pps->disable_dbf = get_bits1(gb); 1676 if (!pps->disable_dbf) { 1677 int beta_offset_div2 = get_se_golomb(gb); 1678 int tc_offset_div2 = get_se_golomb(gb) ; 1679 if (beta_offset_div2 < -6 || beta_offset_div2 > 6) { 1680 av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n", 1681 beta_offset_div2); 1682 ret = AVERROR_INVALIDDATA; 1683 goto err; 1684 } 1685 if (tc_offset_div2 < -6 || tc_offset_div2 > 6) { 1686 av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n", 1687 tc_offset_div2); 1688 ret = AVERROR_INVALIDDATA; 1689 goto err; 1690 } 1691 pps->beta_offset = 2 * beta_offset_div2; 1692 pps->tc_offset = 2 * tc_offset_div2; 1693 } 1694 } 1695 1696 pps->scaling_list_data_present_flag = get_bits1(gb); 1697 if (pps->scaling_list_data_present_flag) { 1698 set_default_scaling_list_data(&pps->scaling_list); 1699 ret = scaling_list_data(gb, avctx, &pps->scaling_list, sps); 1700 if (ret < 0) 1701 goto err; 1702 } 1703 pps->lists_modification_present_flag = get_bits1(gb); 1704 log2_parallel_merge_level_minus2 = get_ue_golomb_long(gb); 1705 if (log2_parallel_merge_level_minus2 > sps->log2_ctb_size) { 1706 av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n", 1707 log2_parallel_merge_level_minus2); 1708 ret = AVERROR_INVALIDDATA; 1709 goto err; 1710 } 1711 pps->log2_parallel_merge_level = log2_parallel_merge_level_minus2 + 2; 1712 1713 pps->slice_header_extension_present_flag = get_bits1(gb); 1714 1715 if (get_bits1(gb)) { // pps_extension_present_flag 1716 pps->pps_range_extensions_flag = get_bits1(gb); 1717 skip_bits(gb, 7); // pps_extension_7bits 1718 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps->pps_range_extensions_flag) { 1719 if ((ret = pps_range_extensions(gb, avctx, pps, sps)) < 0) 1720 goto err; 1721 } 1722 } 1723 1724 ret = setup_pps(avctx, gb, pps, sps); 1725 if (ret < 0) 1726 goto err; 1727 1728 if (get_bits_left(gb) < 0) { 1729 av_log(avctx, AV_LOG_ERROR, 1730 "Overread PPS by %d bits\n", -get_bits_left(gb)); 1731 goto err; 1732 } 1733 1734 remove_pps(ps, pps_id); 1735 ps->pps_list[pps_id] = pps_buf; 1736 1737 return 0; 1738 1739err: 1740 av_buffer_unref(&pps_buf); 1741 return ret; 1742} 1743 1744void ff_hevc_ps_uninit(HEVCParamSets *ps) 1745{ 1746 int i; 1747 1748 for (i = 0; i < FF_ARRAY_ELEMS(ps->vps_list); i++) 1749 av_buffer_unref(&ps->vps_list[i]); 1750 for (i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++) 1751 av_buffer_unref(&ps->sps_list[i]); 1752 for (i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++) 1753 av_buffer_unref(&ps->pps_list[i]); 1754 1755 ps->sps = NULL; 1756 ps->pps = NULL; 1757 ps->vps = NULL; 1758} 1759 1760int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type) 1761{ 1762 int max_poc_lsb = 1 << sps->log2_max_poc_lsb; 1763 int prev_poc_lsb = pocTid0 % max_poc_lsb; 1764 int prev_poc_msb = pocTid0 - prev_poc_lsb; 1765 int poc_msb; 1766 1767 if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2) 1768 poc_msb = prev_poc_msb + max_poc_lsb; 1769 else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2) 1770 poc_msb = prev_poc_msb - max_poc_lsb; 1771 else 1772 poc_msb = prev_poc_msb; 1773 1774 // For BLA picture types, POCmsb is set to 0. 1775 if (nal_unit_type == HEVC_NAL_BLA_W_LP || 1776 nal_unit_type == HEVC_NAL_BLA_W_RADL || 1777 nal_unit_type == HEVC_NAL_BLA_N_LP) 1778 poc_msb = 0; 1779 1780 return poc_msb + poc_lsb; 1781} 1782