2 * HEVC Parameter Set decoding
4 * Copyright (C) 2012 - 2103 Guillaume Martres
5 * Copyright (C) 2012 - 2103 Mickael Raulet
6 * Copyright (C) 2012 - 2013 Gildas Cocherel
7 * Copyright (C) 2013 Vittorio Giovara
9 * This file is part of FFmpeg.
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.
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.
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
26 #include "libavutil/imgutils.h"
28 #include "hevc_data.h"
31 static 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
42 static 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
53 static const AVRational vui_sar[] = {
73 static const uint8_t hevc_sub_width_c[] = {
77 static const uint8_t hevc_sub_height_c[] = {
81 static void remove_pps(HEVCParamSets *s, int id)
83 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)
85 av_buffer_unref(&s->pps_list[id]);
88 static void remove_sps(HEVCParamSets *s, int id)
91 if (s->sps_list[id]) {
92 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)
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)
100 av_assert0(!(s->sps_list[id] && s->sps == (HEVCSPS*)s->sps_list[id]->data));
102 av_buffer_unref(&s->sps_list[id]);
105 static void remove_vps(HEVCParamSets *s, int id)
108 if (s->vps_list[id]) {
109 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)
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)
116 av_buffer_unref(&s->vps_list[id]);
119 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
120 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
122 uint8_t rps_predict = 0;
129 if (rps != sps->st_rps && sps->nb_st_rps)
130 rps_predict = get_bits1(gb);
133 const ShortTermRPS *rps_ridx;
135 unsigned abs_delta_rps;
136 uint8_t use_delta_flag = 0;
137 uint8_t delta_rps_sign;
139 if (is_slice_header) {
140 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
141 if (delta_idx > sps->nb_st_rps) {
142 av_log(avctx, AV_LOG_ERROR,
143 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
144 delta_idx, sps->nb_st_rps);
145 return AVERROR_INVALIDDATA;
147 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
148 rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs;
150 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
152 delta_rps_sign = get_bits1(gb);
153 abs_delta_rps = get_ue_golomb_long(gb) + 1;
154 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
155 av_log(avctx, AV_LOG_ERROR,
156 "Invalid value of abs_delta_rps: %d\n",
158 return AVERROR_INVALIDDATA;
160 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
161 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
162 int used = rps->used[k] = get_bits1(gb);
165 use_delta_flag = get_bits1(gb);
167 if (used || use_delta_flag) {
168 if (i < rps_ridx->num_delta_pocs)
169 delta_poc = delta_rps + rps_ridx->delta_poc[i];
171 delta_poc = delta_rps;
172 rps->delta_poc[k] = delta_poc;
181 if (k >= FF_ARRAY_ELEMS(rps->used)) {
182 av_log(avctx, AV_LOG_ERROR,
183 "Invalid num_delta_pocs: %d\n", k);
184 return AVERROR_INVALIDDATA;
187 rps->num_delta_pocs = k;
188 rps->num_negative_pics = k0;
189 // sort in increasing order (smallest first)
190 if (rps->num_delta_pocs != 0) {
192 for (i = 1; i < rps->num_delta_pocs; i++) {
193 delta_poc = rps->delta_poc[i];
195 for (k = i - 1; k >= 0; k--) {
196 tmp = rps->delta_poc[k];
197 if (delta_poc < tmp) {
198 rps->delta_poc[k + 1] = tmp;
199 rps->used[k + 1] = rps->used[k];
200 rps->delta_poc[k] = delta_poc;
206 if ((rps->num_negative_pics >> 1) != 0) {
208 k = rps->num_negative_pics - 1;
209 // flip the negative values to largest first
210 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
211 delta_poc = rps->delta_poc[i];
213 rps->delta_poc[i] = rps->delta_poc[k];
214 rps->used[i] = rps->used[k];
215 rps->delta_poc[k] = delta_poc;
221 unsigned int prev, nb_positive_pics;
222 rps->num_negative_pics = get_ue_golomb_long(gb);
223 nb_positive_pics = get_ue_golomb_long(gb);
225 if (rps->num_negative_pics >= HEVC_MAX_REFS ||
226 nb_positive_pics >= HEVC_MAX_REFS) {
227 av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
228 return AVERROR_INVALIDDATA;
231 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
232 if (rps->num_delta_pocs) {
234 for (i = 0; i < rps->num_negative_pics; i++) {
235 delta_poc = get_ue_golomb_long(gb) + 1;
236 if (delta_poc < 1 || delta_poc > 32768) {
237 av_log(avctx, AV_LOG_ERROR,
238 "Invalid value of delta_poc: %d\n",
240 return AVERROR_INVALIDDATA;
243 rps->delta_poc[i] = prev;
244 rps->used[i] = get_bits1(gb);
247 for (i = 0; i < nb_positive_pics; i++) {
248 delta_poc = get_ue_golomb_long(gb) + 1;
249 if (delta_poc < 1 || delta_poc > 32768) {
250 av_log(avctx, AV_LOG_ERROR,
251 "Invalid value of delta_poc: %d\n",
253 return AVERROR_INVALIDDATA;
256 rps->delta_poc[rps->num_negative_pics + i] = prev;
257 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
265 static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,
270 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12)
273 ptl->profile_space = get_bits(gb, 2);
274 ptl->tier_flag = get_bits1(gb);
275 ptl->profile_idc = get_bits(gb, 5);
276 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
277 av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
278 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
279 av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
280 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
281 av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
282 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
283 av_log(avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
285 av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
287 for (i = 0; i < 32; i++) {
288 ptl->profile_compatibility_flag[i] = get_bits1(gb);
290 if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i])
291 ptl->profile_idc = i;
293 ptl->progressive_source_flag = get_bits1(gb);
294 ptl->interlaced_source_flag = get_bits1(gb);
295 ptl->non_packed_constraint_flag = get_bits1(gb);
296 ptl->frame_only_constraint_flag = get_bits1(gb);
298 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
299 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
300 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
305 static int parse_ptl(GetBitContext *gb, AVCodecContext *avctx,
306 PTL *ptl, int max_num_sub_layers)
309 if (decode_profile_tier_level(gb, avctx, &ptl->general_ptl) < 0 ||
310 get_bits_left(gb) < 8 + (8*2 * (max_num_sub_layers - 1 > 0))) {
311 av_log(avctx, AV_LOG_ERROR, "PTL information too short\n");
315 ptl->general_ptl.level_idc = get_bits(gb, 8);
317 for (i = 0; i < max_num_sub_layers - 1; i++) {
318 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
319 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
322 if (max_num_sub_layers - 1> 0)
323 for (i = max_num_sub_layers - 1; i < 8; i++)
324 skip_bits(gb, 2); // reserved_zero_2bits[i]
325 for (i = 0; i < max_num_sub_layers - 1; i++) {
326 if (ptl->sub_layer_profile_present_flag[i] &&
327 decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]) < 0) {
328 av_log(avctx, AV_LOG_ERROR,
329 "PTL information for sublayer %i too short\n", i);
332 if (ptl->sub_layer_level_present_flag[i]) {
333 if (get_bits_left(gb) < 8) {
334 av_log(avctx, AV_LOG_ERROR,
335 "Not enough data for sublayer %i level_idc\n", i);
338 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
345 static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,
346 int subpic_params_present)
350 for (i = 0; i < nb_cpb; i++) {
351 get_ue_golomb_long(gb); // bit_rate_value_minus1
352 get_ue_golomb_long(gb); // cpb_size_value_minus1
354 if (subpic_params_present) {
355 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
356 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
358 skip_bits1(gb); // cbr_flag
362 static int decode_hrd(GetBitContext *gb, int common_inf_present,
365 int nal_params_present = 0, vcl_params_present = 0;
366 int subpic_params_present = 0;
369 if (common_inf_present) {
370 nal_params_present = get_bits1(gb);
371 vcl_params_present = get_bits1(gb);
373 if (nal_params_present || vcl_params_present) {
374 subpic_params_present = get_bits1(gb);
376 if (subpic_params_present) {
377 skip_bits(gb, 8); // tick_divisor_minus2
378 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
379 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
380 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
383 skip_bits(gb, 4); // bit_rate_scale
384 skip_bits(gb, 4); // cpb_size_scale
386 if (subpic_params_present)
387 skip_bits(gb, 4); // cpb_size_du_scale
389 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
390 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
391 skip_bits(gb, 5); // dpb_output_delay_length_minus1
395 for (i = 0; i < max_sublayers; i++) {
397 unsigned int nb_cpb = 1;
398 int fixed_rate = get_bits1(gb);
401 fixed_rate = get_bits1(gb);
404 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
406 low_delay = get_bits1(gb);
409 nb_cpb = get_ue_golomb_long(gb) + 1;
410 if (nb_cpb < 1 || nb_cpb > 32) {
411 av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
412 return AVERROR_INVALIDDATA;
416 if (nal_params_present)
417 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
418 if (vcl_params_present)
419 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
424 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
431 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
434 return AVERROR(ENOMEM);
435 vps = (HEVCVPS*)vps_buf->data;
437 av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n");
439 nal_size = gb->buffer_end - gb->buffer;
440 if (nal_size > sizeof(vps->data)) {
441 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized VPS "
442 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
443 nal_size, sizeof(vps->data));
444 vps->data_size = sizeof(vps->data);
446 vps->data_size = nal_size;
448 memcpy(vps->data, gb->buffer, vps->data_size);
450 vps_id = get_bits(gb, 4);
451 if (vps_id >= HEVC_MAX_VPS_COUNT) {
452 av_log(avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
456 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
457 av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
461 vps->vps_max_layers = get_bits(gb, 6) + 1;
462 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
463 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
465 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
466 av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
470 if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) {
471 av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
472 vps->vps_max_sub_layers);
476 if (parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers) < 0)
479 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
481 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
482 for (; i < vps->vps_max_sub_layers; i++) {
483 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
484 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
485 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
487 if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
488 av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
489 vps->vps_max_dec_pic_buffering[i] - 1);
492 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
493 av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
494 vps->vps_num_reorder_pics[i]);
495 if (avctx->err_recognition & AV_EF_EXPLODE)
500 vps->vps_max_layer_id = get_bits(gb, 6);
501 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
502 if (vps->vps_num_layer_sets < 1 || vps->vps_num_layer_sets > 1024 ||
503 (vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
504 av_log(avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
508 for (i = 1; i < vps->vps_num_layer_sets; i++)
509 for (j = 0; j <= vps->vps_max_layer_id; j++)
510 skip_bits(gb, 1); // layer_id_included_flag[i][j]
512 vps->vps_timing_info_present_flag = get_bits1(gb);
513 if (vps->vps_timing_info_present_flag) {
514 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
515 vps->vps_time_scale = get_bits_long(gb, 32);
516 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
517 if (vps->vps_poc_proportional_to_timing_flag)
518 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
519 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
520 if (vps->vps_num_hrd_parameters > (unsigned)vps->vps_num_layer_sets) {
521 av_log(avctx, AV_LOG_ERROR,
522 "vps_num_hrd_parameters %d is invalid\n", vps->vps_num_hrd_parameters);
525 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
526 int common_inf_present = 1;
528 get_ue_golomb_long(gb); // hrd_layer_set_idx
530 common_inf_present = get_bits1(gb);
531 decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers);
534 get_bits1(gb); /* vps_extension_flag */
536 if (get_bits_left(gb) < 0) {
537 av_log(avctx, AV_LOG_ERROR,
538 "Overread VPS by %d bits\n", -get_bits_left(gb));
539 if (ps->vps_list[vps_id])
543 if (ps->vps_list[vps_id] &&
544 !memcmp(ps->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {
545 av_buffer_unref(&vps_buf);
547 remove_vps(ps, vps_id);
548 ps->vps_list[vps_id] = vps_buf;
554 av_buffer_unref(&vps_buf);
555 return AVERROR_INVALIDDATA;
558 static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,
559 int apply_defdispwin, HEVCSPS *sps)
561 VUI backup_vui, *vui = &sps->vui;
562 GetBitContext backup;
563 int sar_present, alt = 0;
565 av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n");
567 sar_present = get_bits1(gb);
569 uint8_t sar_idx = get_bits(gb, 8);
570 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
571 vui->sar = vui_sar[sar_idx];
572 else if (sar_idx == 255) {
573 vui->sar.num = get_bits(gb, 16);
574 vui->sar.den = get_bits(gb, 16);
576 av_log(avctx, AV_LOG_WARNING,
577 "Unknown SAR index: %u.\n", sar_idx);
580 vui->overscan_info_present_flag = get_bits1(gb);
581 if (vui->overscan_info_present_flag)
582 vui->overscan_appropriate_flag = get_bits1(gb);
584 vui->video_signal_type_present_flag = get_bits1(gb);
585 if (vui->video_signal_type_present_flag) {
586 vui->video_format = get_bits(gb, 3);
587 vui->video_full_range_flag = get_bits1(gb);
588 vui->colour_description_present_flag = get_bits1(gb);
589 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
590 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
591 if (vui->colour_description_present_flag) {
592 vui->colour_primaries = get_bits(gb, 8);
593 vui->transfer_characteristic = get_bits(gb, 8);
594 vui->matrix_coeffs = get_bits(gb, 8);
596 // Set invalid values to "unspecified"
597 if (!av_color_primaries_name(vui->colour_primaries))
598 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
599 if (!av_color_transfer_name(vui->transfer_characteristic))
600 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
601 if (!av_color_space_name(vui->matrix_coeffs))
602 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
603 if (vui->matrix_coeffs == AVCOL_SPC_RGB) {
604 switch (sps->pix_fmt) {
605 case AV_PIX_FMT_YUV444P:
606 sps->pix_fmt = AV_PIX_FMT_GBRP;
608 case AV_PIX_FMT_YUV444P10:
609 sps->pix_fmt = AV_PIX_FMT_GBRP10;
611 case AV_PIX_FMT_YUV444P12:
612 sps->pix_fmt = AV_PIX_FMT_GBRP12;
619 vui->chroma_loc_info_present_flag = get_bits1(gb);
620 if (vui->chroma_loc_info_present_flag) {
621 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
622 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
625 vui->neutra_chroma_indication_flag = get_bits1(gb);
626 vui->field_seq_flag = get_bits1(gb);
627 vui->frame_field_info_present_flag = get_bits1(gb);
629 // Backup context in case an alternate header is detected
630 memcpy(&backup, gb, sizeof(backup));
631 memcpy(&backup_vui, vui, sizeof(backup_vui));
632 if (get_bits_left(gb) >= 68 && show_bits_long(gb, 21) == 0x100000) {
633 vui->default_display_window_flag = 0;
634 av_log(avctx, AV_LOG_WARNING, "Invalid default display window\n");
636 vui->default_display_window_flag = get_bits1(gb);
638 if (vui->default_display_window_flag) {
639 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
640 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
641 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
642 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
643 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
644 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
646 if (apply_defdispwin &&
647 avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
648 av_log(avctx, AV_LOG_DEBUG,
649 "discarding vui default display window, "
650 "original values are l:%u r:%u t:%u b:%u\n",
651 vui->def_disp_win.left_offset,
652 vui->def_disp_win.right_offset,
653 vui->def_disp_win.top_offset,
654 vui->def_disp_win.bottom_offset);
656 vui->def_disp_win.left_offset =
657 vui->def_disp_win.right_offset =
658 vui->def_disp_win.top_offset =
659 vui->def_disp_win.bottom_offset = 0;
664 vui->vui_timing_info_present_flag = get_bits1(gb);
666 if (vui->vui_timing_info_present_flag) {
667 if( get_bits_left(gb) < 66 && !alt) {
668 // The alternate syntax seem to have timing info located
669 // at where def_disp_win is normally located
670 av_log(avctx, AV_LOG_WARNING,
671 "Strange VUI timing information, retrying...\n");
672 memcpy(vui, &backup_vui, sizeof(backup_vui));
673 memcpy(gb, &backup, sizeof(backup));
677 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
678 vui->vui_time_scale = get_bits_long(gb, 32);
680 av_log(avctx, AV_LOG_INFO, "Retry got %"PRIu32"/%"PRIu32" fps\n",
681 vui->vui_time_scale, vui->vui_num_units_in_tick);
683 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
684 if (vui->vui_poc_proportional_to_timing_flag)
685 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
686 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
687 if (vui->vui_hrd_parameters_present_flag)
688 decode_hrd(gb, 1, sps->max_sub_layers);
691 vui->bitstream_restriction_flag = get_bits1(gb);
692 if (vui->bitstream_restriction_flag) {
693 if (get_bits_left(gb) < 8 && !alt) {
694 av_log(avctx, AV_LOG_WARNING,
695 "Strange VUI bitstream restriction information, retrying"
696 " from timing information...\n");
697 memcpy(vui, &backup_vui, sizeof(backup_vui));
698 memcpy(gb, &backup, sizeof(backup));
702 vui->tiles_fixed_structure_flag = get_bits1(gb);
703 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
704 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
705 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
706 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
707 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
708 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
709 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
712 if (get_bits_left(gb) < 1 && !alt) {
713 // XXX: Alternate syntax when sps_range_extension_flag != 0?
714 av_log(avctx, AV_LOG_WARNING,
715 "Overread in VUI, retrying from timing information...\n");
716 memcpy(vui, &backup_vui, sizeof(backup_vui));
717 memcpy(gb, &backup, sizeof(backup));
723 static void set_default_scaling_list_data(ScalingList *sl)
727 for (matrixId = 0; matrixId < 6; matrixId++) {
729 memset(sl->sl[0][matrixId], 16, 16);
730 sl->sl_dc[0][matrixId] = 16; // default for 16x16
731 sl->sl_dc[1][matrixId] = 16; // default for 32x32
733 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
734 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
735 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
736 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
737 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
738 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
739 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
740 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
741 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
742 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
743 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
744 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
745 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
746 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
747 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
748 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
749 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
750 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
753 static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl, HEVCSPS *sps)
755 uint8_t scaling_list_pred_mode_flag;
756 int32_t scaling_list_dc_coef[2][6];
757 int size_id, matrix_id, pos;
760 for (size_id = 0; size_id < 4; size_id++)
761 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
762 scaling_list_pred_mode_flag = get_bits1(gb);
763 if (!scaling_list_pred_mode_flag) {
764 unsigned int delta = get_ue_golomb_long(gb);
765 /* Only need to handle non-zero delta. Zero means default,
766 * which should already be in the arrays. */
768 // Copy from previous array.
769 delta *= (size_id == 3) ? 3 : 1;
770 if (matrix_id < delta) {
771 av_log(avctx, AV_LOG_ERROR,
772 "Invalid delta in scaling list data: %d.\n", delta);
773 return AVERROR_INVALIDDATA;
776 memcpy(sl->sl[size_id][matrix_id],
777 sl->sl[size_id][matrix_id - delta],
778 size_id > 0 ? 64 : 16);
780 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
783 int next_coef, coef_num;
784 int32_t scaling_list_delta_coef;
787 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
789 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
790 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
791 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
793 for (i = 0; i < coef_num; i++) {
795 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
796 ff_hevc_diag_scan4x4_x[i];
798 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
799 ff_hevc_diag_scan8x8_x[i];
801 scaling_list_delta_coef = get_se_golomb(gb);
802 next_coef = (next_coef + 256U + scaling_list_delta_coef) % 256;
803 sl->sl[size_id][matrix_id][pos] = next_coef;
808 if (sps->chroma_format_idc == 3) {
809 for (i = 0; i < 64; i++) {
810 sl->sl[3][1][i] = sl->sl[2][1][i];
811 sl->sl[3][2][i] = sl->sl[2][2][i];
812 sl->sl[3][4][i] = sl->sl[2][4][i];
813 sl->sl[3][5][i] = sl->sl[2][5][i];
815 sl->sl_dc[1][1] = sl->sl_dc[0][1];
816 sl->sl_dc[1][2] = sl->sl_dc[0][2];
817 sl->sl_dc[1][4] = sl->sl_dc[0][4];
818 sl->sl_dc[1][5] = sl->sl_dc[0][5];
825 static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps)
827 const AVPixFmtDescriptor *desc;
828 switch (sps->bit_depth) {
830 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
831 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
832 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
833 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
836 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY9;
837 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
838 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
839 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
842 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10;
843 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
844 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
845 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
848 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12;
849 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
850 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
851 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
854 av_log(avctx, AV_LOG_ERROR,
855 "The following bit-depths are currently specified: 8, 9, 10 and 12 bits, "
856 "chroma_format_idc is %d, depth is %d\n",
857 sps->chroma_format_idc, sps->bit_depth);
858 return AVERROR_INVALIDDATA;
861 desc = av_pix_fmt_desc_get(sps->pix_fmt);
863 return AVERROR(EINVAL);
865 sps->hshift[0] = sps->vshift[0] = 0;
866 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
867 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
869 sps->pixel_shift = sps->bit_depth > 8;
874 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
875 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)
879 int log2_diff_max_min_transform_block_size;
880 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
885 sps->vps_id = get_bits(gb, 4);
886 if (sps->vps_id >= HEVC_MAX_VPS_COUNT) {
887 av_log(avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
888 return AVERROR_INVALIDDATA;
891 if (vps_list && !vps_list[sps->vps_id]) {
892 av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
894 return AVERROR_INVALIDDATA;
897 sps->max_sub_layers = get_bits(gb, 3) + 1;
898 if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) {
899 av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
900 sps->max_sub_layers);
901 return AVERROR_INVALIDDATA;
904 sps->temporal_id_nesting_flag = get_bits(gb, 1);
906 if ((ret = parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers)) < 0)
909 *sps_id = get_ue_golomb_long(gb);
910 if (*sps_id >= HEVC_MAX_SPS_COUNT) {
911 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);
912 return AVERROR_INVALIDDATA;
915 sps->chroma_format_idc = get_ue_golomb_long(gb);
916 if (sps->chroma_format_idc > 3U) {
917 av_log(avctx, AV_LOG_ERROR, "chroma_format_idc %d is invalid\n", sps->chroma_format_idc);
918 return AVERROR_INVALIDDATA;
921 if (sps->chroma_format_idc == 3)
922 sps->separate_colour_plane_flag = get_bits1(gb);
924 if (sps->separate_colour_plane_flag)
925 sps->chroma_format_idc = 0;
927 sps->width = get_ue_golomb_long(gb);
928 sps->height = get_ue_golomb_long(gb);
929 if ((ret = av_image_check_size(sps->width,
930 sps->height, 0, avctx)) < 0)
933 if (get_bits1(gb)) { // pic_conformance_flag
934 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
935 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
936 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
937 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
938 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
939 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
941 if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
942 av_log(avctx, AV_LOG_DEBUG,
943 "discarding sps conformance window, "
944 "original values are l:%u r:%u t:%u b:%u\n",
945 sps->pic_conf_win.left_offset,
946 sps->pic_conf_win.right_offset,
947 sps->pic_conf_win.top_offset,
948 sps->pic_conf_win.bottom_offset);
950 sps->pic_conf_win.left_offset =
951 sps->pic_conf_win.right_offset =
952 sps->pic_conf_win.top_offset =
953 sps->pic_conf_win.bottom_offset = 0;
955 sps->output_window = sps->pic_conf_win;
958 sps->bit_depth = get_ue_golomb_long(gb) + 8;
959 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
960 if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) {
961 av_log(avctx, AV_LOG_ERROR,
962 "Luma bit depth (%d) is different from chroma bit depth (%d), "
963 "this is unsupported.\n",
964 sps->bit_depth, bit_depth_chroma);
965 return AVERROR_INVALIDDATA;
967 sps->bit_depth_chroma = bit_depth_chroma;
969 ret = map_pixel_format(avctx, sps);
973 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
974 if (sps->log2_max_poc_lsb > 16) {
975 av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
976 sps->log2_max_poc_lsb - 4);
977 return AVERROR_INVALIDDATA;
980 sublayer_ordering_info = get_bits1(gb);
981 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
982 for (i = start; i < sps->max_sub_layers; i++) {
983 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
984 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
985 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
986 if (sps->temporal_layer[i].max_dec_pic_buffering > (unsigned)HEVC_MAX_DPB_SIZE) {
987 av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
988 sps->temporal_layer[i].max_dec_pic_buffering - 1U);
989 return AVERROR_INVALIDDATA;
991 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
992 av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
993 sps->temporal_layer[i].num_reorder_pics);
994 if (avctx->err_recognition & AV_EF_EXPLODE ||
995 sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {
996 return AVERROR_INVALIDDATA;
998 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
1002 if (!sublayer_ordering_info) {
1003 for (i = 0; i < start; i++) {
1004 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
1005 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
1006 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
1010 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
1011 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
1012 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
1013 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
1014 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
1015 sps->log2_min_tb_size;
1017 if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) {
1018 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size);
1019 return AVERROR_INVALIDDATA;
1022 if (sps->log2_diff_max_min_coding_block_size > 30) {
1023 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);
1024 return AVERROR_INVALIDDATA;
1027 if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) {
1028 av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
1029 return AVERROR_INVALIDDATA;
1032 if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) {
1033 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size);
1034 return AVERROR_INVALIDDATA;
1037 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
1038 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
1040 sps->scaling_list_enable_flag = get_bits1(gb);
1041 if (sps->scaling_list_enable_flag) {
1042 set_default_scaling_list_data(&sps->scaling_list);
1044 if (get_bits1(gb)) {
1045 ret = scaling_list_data(gb, avctx, &sps->scaling_list, sps);
1051 sps->amp_enabled_flag = get_bits1(gb);
1052 sps->sao_enabled = get_bits1(gb);
1054 sps->pcm_enabled_flag = get_bits1(gb);
1055 if (sps->pcm_enabled_flag) {
1056 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
1057 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
1058 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
1059 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
1060 get_ue_golomb_long(gb);
1061 if (FFMAX(sps->pcm.bit_depth, sps->pcm.bit_depth_chroma) > sps->bit_depth) {
1062 av_log(avctx, AV_LOG_ERROR,
1063 "PCM bit depth (%d, %d) is greater than normal bit depth (%d)\n",
1064 sps->pcm.bit_depth, sps->pcm.bit_depth_chroma, sps->bit_depth);
1065 return AVERROR_INVALIDDATA;
1068 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
1071 sps->nb_st_rps = get_ue_golomb_long(gb);
1072 if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_REF_PIC_SETS) {
1073 av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
1075 return AVERROR_INVALIDDATA;
1077 for (i = 0; i < sps->nb_st_rps; i++) {
1078 if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],
1083 sps->long_term_ref_pics_present_flag = get_bits1(gb);
1084 if (sps->long_term_ref_pics_present_flag) {
1085 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
1086 if (sps->num_long_term_ref_pics_sps > HEVC_MAX_LONG_TERM_REF_PICS) {
1087 av_log(avctx, AV_LOG_ERROR, "Too many long term ref pics: %d.\n",
1088 sps->num_long_term_ref_pics_sps);
1089 return AVERROR_INVALIDDATA;
1091 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
1092 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
1093 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
1097 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
1098 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
1099 sps->vui.sar = (AVRational){0, 1};
1100 vui_present = get_bits1(gb);
1102 decode_vui(gb, avctx, apply_defdispwin, sps);
1104 if (get_bits1(gb)) { // sps_extension_flag
1105 sps->sps_range_extension_flag = get_bits1(gb);
1106 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
1107 if (sps->sps_range_extension_flag) {
1108 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
1109 sps->transform_skip_context_enabled_flag = get_bits1(gb);
1110 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
1112 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
1114 sps->extended_precision_processing_flag = get_bits1(gb);
1115 if (sps->extended_precision_processing_flag)
1116 av_log(avctx, AV_LOG_WARNING,
1117 "extended_precision_processing_flag not yet implemented\n");
1119 sps->intra_smoothing_disabled_flag = get_bits1(gb);
1120 sps->high_precision_offsets_enabled_flag = get_bits1(gb);
1121 if (sps->high_precision_offsets_enabled_flag)
1122 av_log(avctx, AV_LOG_WARNING,
1123 "high_precision_offsets_enabled_flag not yet implemented\n");
1125 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
1127 sps->cabac_bypass_alignment_enabled_flag = get_bits1(gb);
1128 if (sps->cabac_bypass_alignment_enabled_flag)
1129 av_log(avctx, AV_LOG_WARNING,
1130 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
1133 if (apply_defdispwin) {
1134 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
1135 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
1136 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
1137 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
1140 ow = &sps->output_window;
1141 if (ow->left_offset >= INT_MAX - ow->right_offset ||
1142 ow->top_offset >= INT_MAX - ow->bottom_offset ||
1143 ow->left_offset + ow->right_offset >= sps->width ||
1144 ow->top_offset + ow->bottom_offset >= sps->height) {
1145 av_log(avctx, AV_LOG_WARNING, "Invalid cropping offsets: %u/%u/%u/%u\n",
1146 ow->left_offset, ow->right_offset, ow->top_offset, ow->bottom_offset);
1147 if (avctx->err_recognition & AV_EF_EXPLODE) {
1148 return AVERROR_INVALIDDATA;
1150 av_log(avctx, AV_LOG_WARNING,
1151 "Displaying the whole video surface.\n");
1152 memset(ow, 0, sizeof(*ow));
1153 memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win));
1156 // Inferred parameters
1157 sps->log2_ctb_size = sps->log2_min_cb_size +
1158 sps->log2_diff_max_min_coding_block_size;
1159 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1161 if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {
1162 av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1163 return AVERROR_INVALIDDATA;
1165 if (sps->log2_ctb_size < 4) {
1168 "log2_ctb_size %d differs from the bounds of any known profile\n",
1169 sps->log2_ctb_size);
1170 avpriv_request_sample(avctx, "log2_ctb_size %d", sps->log2_ctb_size);
1171 return AVERROR_INVALIDDATA;
1174 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1175 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1176 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1178 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1179 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1180 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1181 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1182 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1183 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1184 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1186 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1188 if (av_mod_uintp2(sps->width, sps->log2_min_cb_size) ||
1189 av_mod_uintp2(sps->height, sps->log2_min_cb_size)) {
1190 av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1191 return AVERROR_INVALIDDATA;
1194 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1195 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1196 sps->max_transform_hierarchy_depth_inter);
1197 return AVERROR_INVALIDDATA;
1199 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1200 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1201 sps->max_transform_hierarchy_depth_intra);
1202 return AVERROR_INVALIDDATA;
1204 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1205 av_log(avctx, AV_LOG_ERROR,
1206 "max transform block size out of range: %d\n",
1207 sps->log2_max_trafo_size);
1208 return AVERROR_INVALIDDATA;
1211 if (get_bits_left(gb) < 0) {
1212 av_log(avctx, AV_LOG_ERROR,
1213 "Overread SPS by %d bits\n", -get_bits_left(gb));
1214 return AVERROR_INVALIDDATA;
1220 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
1221 HEVCParamSets *ps, int apply_defdispwin)
1224 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
1225 unsigned int sps_id;
1230 return AVERROR(ENOMEM);
1231 sps = (HEVCSPS*)sps_buf->data;
1233 av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n");
1235 nal_size = gb->buffer_end - gb->buffer;
1236 if (nal_size > sizeof(sps->data)) {
1237 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized SPS "
1238 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1239 nal_size, sizeof(sps->data));
1240 sps->data_size = sizeof(sps->data);
1242 sps->data_size = nal_size;
1244 memcpy(sps->data, gb->buffer, sps->data_size);
1246 ret = ff_hevc_parse_sps(sps, gb, &sps_id,
1248 ps->vps_list, avctx);
1250 av_buffer_unref(&sps_buf);
1254 if (avctx->debug & FF_DEBUG_BITSTREAM) {
1255 av_log(avctx, AV_LOG_DEBUG,
1256 "Parsed SPS: id %d; coded wxh: %dx%d; "
1257 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1258 sps_id, sps->width, sps->height,
1259 sps->width - (sps->output_window.left_offset + sps->output_window.right_offset),
1260 sps->height - (sps->output_window.top_offset + sps->output_window.bottom_offset),
1261 av_get_pix_fmt_name(sps->pix_fmt));
1264 /* check if this is a repeat of an already parsed SPS, then keep the
1266 * otherwise drop all PPSes that depend on it */
1267 if (ps->sps_list[sps_id] &&
1268 !memcmp(ps->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1269 av_buffer_unref(&sps_buf);
1271 remove_sps(ps, sps_id);
1272 ps->sps_list[sps_id] = sps_buf;
1278 static void hevc_pps_free(void *opaque, uint8_t *data)
1280 HEVCPPS *pps = (HEVCPPS*)data;
1282 av_freep(&pps->column_width);
1283 av_freep(&pps->row_height);
1284 av_freep(&pps->col_bd);
1285 av_freep(&pps->row_bd);
1286 av_freep(&pps->col_idxX);
1287 av_freep(&pps->ctb_addr_rs_to_ts);
1288 av_freep(&pps->ctb_addr_ts_to_rs);
1289 av_freep(&pps->tile_pos_rs);
1290 av_freep(&pps->tile_id);
1291 av_freep(&pps->min_tb_addr_zs_tab);
1296 static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx,
1297 HEVCPPS *pps, HEVCSPS *sps) {
1300 if (pps->transform_skip_enabled_flag) {
1301 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1303 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1304 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1305 if (pps->chroma_qp_offset_list_enabled_flag) {
1306 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1307 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1308 if (pps->chroma_qp_offset_list_len_minus1 > 5) {
1309 av_log(avctx, AV_LOG_ERROR,
1310 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1311 return AVERROR_INVALIDDATA;
1313 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1314 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1315 if (pps->cb_qp_offset_list[i]) {
1316 av_log(avctx, AV_LOG_WARNING,
1317 "cb_qp_offset_list not tested yet.\n");
1319 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1320 if (pps->cr_qp_offset_list[i]) {
1321 av_log(avctx, AV_LOG_WARNING,
1322 "cb_qp_offset_list not tested yet.\n");
1326 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1327 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1329 if ( pps->log2_sao_offset_scale_luma > FFMAX(sps->bit_depth - 10, 0)
1330 || pps->log2_sao_offset_scale_chroma > FFMAX(sps->bit_depth_chroma - 10, 0)
1332 return AVERROR_INVALIDDATA;
1337 static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,
1338 HEVCPPS *pps, HEVCSPS *sps)
1341 int pic_area_in_ctbs;
1342 int i, j, x, y, ctb_addr_rs, tile_id;
1344 // Inferred parameters
1345 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1346 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1347 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1348 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)
1349 return AVERROR(ENOMEM);
1351 if (pps->uniform_spacing_flag) {
1352 if (!pps->column_width) {
1353 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1354 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1356 if (!pps->column_width || !pps->row_height)
1357 return AVERROR(ENOMEM);
1359 for (i = 0; i < pps->num_tile_columns; i++) {
1360 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1361 (i * sps->ctb_width) / pps->num_tile_columns;
1364 for (i = 0; i < pps->num_tile_rows; i++) {
1365 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1366 (i * sps->ctb_height) / pps->num_tile_rows;
1371 for (i = 0; i < pps->num_tile_columns; i++)
1372 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1375 for (i = 0; i < pps->num_tile_rows; i++)
1376 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1378 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1379 if (i > pps->col_bd[j])
1381 pps->col_idxX[i] = j;
1387 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1389 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1390 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1391 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1392 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1393 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1394 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1395 return AVERROR(ENOMEM);
1398 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1399 int tb_x = ctb_addr_rs % sps->ctb_width;
1400 int tb_y = ctb_addr_rs / sps->ctb_width;
1405 for (i = 0; i < pps->num_tile_columns; i++) {
1406 if (tb_x < pps->col_bd[i + 1]) {
1412 for (i = 0; i < pps->num_tile_rows; i++) {
1413 if (tb_y < pps->row_bd[i + 1]) {
1419 for (i = 0; i < tile_x; i++)
1420 val += pps->row_height[tile_y] * pps->column_width[i];
1421 for (i = 0; i < tile_y; i++)
1422 val += sps->ctb_width * pps->row_height[i];
1424 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1425 tb_x - pps->col_bd[tile_x];
1427 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1428 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1431 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1432 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1433 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1434 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1435 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1437 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1438 if (!pps->tile_pos_rs)
1439 return AVERROR(ENOMEM);
1441 for (j = 0; j < pps->num_tile_rows; j++)
1442 for (i = 0; i < pps->num_tile_columns; i++)
1443 pps->tile_pos_rs[j * pps->num_tile_columns + i] =
1444 pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1446 log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;
1447 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1448 for (y = 0; y < sps->tb_mask+2; y++) {
1449 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1450 pps->min_tb_addr_zs_tab[y] = -1;
1452 for (y = 0; y < sps->tb_mask+1; y++) {
1453 for (x = 0; x < sps->tb_mask+1; x++) {
1454 int tb_x = x >> log2_diff;
1455 int tb_y = y >> log2_diff;
1456 int rs = sps->ctb_width * tb_y + tb_x;
1457 int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);
1458 for (i = 0; i < log2_diff; i++) {
1460 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1462 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1469 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
1472 HEVCSPS *sps = NULL;
1474 unsigned int pps_id = 0;
1476 unsigned log2_parallel_merge_level_minus2;
1478 AVBufferRef *pps_buf;
1479 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1482 return AVERROR(ENOMEM);
1484 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1485 hevc_pps_free, NULL, 0);
1488 return AVERROR(ENOMEM);
1491 av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1493 nal_size = gb->buffer_end - gb->buffer;
1494 if (nal_size > sizeof(pps->data)) {
1495 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized PPS "
1496 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1497 nal_size, sizeof(pps->data));
1498 pps->data_size = sizeof(pps->data);
1500 pps->data_size = nal_size;
1502 memcpy(pps->data, gb->buffer, pps->data_size);
1505 pps->loop_filter_across_tiles_enabled_flag = 1;
1506 pps->num_tile_columns = 1;
1507 pps->num_tile_rows = 1;
1508 pps->uniform_spacing_flag = 1;
1509 pps->disable_dbf = 0;
1510 pps->beta_offset = 0;
1512 pps->log2_max_transform_skip_block_size = 2;
1515 pps_id = get_ue_golomb_long(gb);
1516 if (pps_id >= HEVC_MAX_PPS_COUNT) {
1517 av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1518 ret = AVERROR_INVALIDDATA;
1521 pps->sps_id = get_ue_golomb_long(gb);
1522 if (pps->sps_id >= HEVC_MAX_SPS_COUNT) {
1523 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1524 ret = AVERROR_INVALIDDATA;
1527 if (!ps->sps_list[pps->sps_id]) {
1528 av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1529 ret = AVERROR_INVALIDDATA;
1532 sps = (HEVCSPS *)ps->sps_list[pps->sps_id]->data;
1534 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1535 pps->output_flag_present_flag = get_bits1(gb);
1536 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1538 pps->sign_data_hiding_flag = get_bits1(gb);
1540 pps->cabac_init_present_flag = get_bits1(gb);
1542 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1543 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1545 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1547 pps->constrained_intra_pred_flag = get_bits1(gb);
1548 pps->transform_skip_enabled_flag = get_bits1(gb);
1550 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1551 pps->diff_cu_qp_delta_depth = 0;
1552 if (pps->cu_qp_delta_enabled_flag)
1553 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1555 if (pps->diff_cu_qp_delta_depth < 0 ||
1556 pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
1557 av_log(avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
1558 pps->diff_cu_qp_delta_depth);
1559 ret = AVERROR_INVALIDDATA;
1563 pps->cb_qp_offset = get_se_golomb(gb);
1564 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1565 av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1567 ret = AVERROR_INVALIDDATA;
1570 pps->cr_qp_offset = get_se_golomb(gb);
1571 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1572 av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1574 ret = AVERROR_INVALIDDATA;
1577 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1579 pps->weighted_pred_flag = get_bits1(gb);
1580 pps->weighted_bipred_flag = get_bits1(gb);
1582 pps->transquant_bypass_enable_flag = get_bits1(gb);
1583 pps->tiles_enabled_flag = get_bits1(gb);
1584 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1586 if (pps->tiles_enabled_flag) {
1587 int num_tile_columns_minus1 = get_ue_golomb(gb);
1588 int num_tile_rows_minus1 = get_ue_golomb(gb);
1590 if (num_tile_columns_minus1 < 0 ||
1591 num_tile_columns_minus1 >= sps->ctb_width) {
1592 av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1593 num_tile_columns_minus1);
1594 ret = num_tile_columns_minus1 < 0 ? num_tile_columns_minus1 : AVERROR_INVALIDDATA;
1597 if (num_tile_rows_minus1 < 0 ||
1598 num_tile_rows_minus1 >= sps->ctb_height) {
1599 av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1600 num_tile_rows_minus1);
1601 ret = num_tile_rows_minus1 < 0 ? num_tile_rows_minus1 : AVERROR_INVALIDDATA;
1604 pps->num_tile_columns = num_tile_columns_minus1 + 1;
1605 pps->num_tile_rows = num_tile_rows_minus1 + 1;
1607 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1608 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1609 if (!pps->column_width || !pps->row_height) {
1610 ret = AVERROR(ENOMEM);
1614 pps->uniform_spacing_flag = get_bits1(gb);
1615 if (!pps->uniform_spacing_flag) {
1617 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1618 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1619 sum += pps->column_width[i];
1621 if (sum >= sps->ctb_width) {
1622 av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1623 ret = AVERROR_INVALIDDATA;
1626 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1629 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1630 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1631 sum += pps->row_height[i];
1633 if (sum >= sps->ctb_height) {
1634 av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1635 ret = AVERROR_INVALIDDATA;
1638 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1640 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1643 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1645 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1646 if (pps->deblocking_filter_control_present_flag) {
1647 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1648 pps->disable_dbf = get_bits1(gb);
1649 if (!pps->disable_dbf) {
1650 int beta_offset_div2 = get_se_golomb(gb);
1651 int tc_offset_div2 = get_se_golomb(gb) ;
1652 if (beta_offset_div2 < -6 || beta_offset_div2 > 6) {
1653 av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1655 ret = AVERROR_INVALIDDATA;
1658 if (tc_offset_div2 < -6 || tc_offset_div2 > 6) {
1659 av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1661 ret = AVERROR_INVALIDDATA;
1664 pps->beta_offset = 2 * beta_offset_div2;
1665 pps->tc_offset = 2 * tc_offset_div2;
1669 pps->scaling_list_data_present_flag = get_bits1(gb);
1670 if (pps->scaling_list_data_present_flag) {
1671 set_default_scaling_list_data(&pps->scaling_list);
1672 ret = scaling_list_data(gb, avctx, &pps->scaling_list, sps);
1676 pps->lists_modification_present_flag = get_bits1(gb);
1677 log2_parallel_merge_level_minus2 = get_ue_golomb_long(gb);
1678 if (log2_parallel_merge_level_minus2 > sps->log2_ctb_size) {
1679 av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1680 log2_parallel_merge_level_minus2);
1681 ret = AVERROR_INVALIDDATA;
1684 pps->log2_parallel_merge_level = log2_parallel_merge_level_minus2 + 2;
1686 pps->slice_header_extension_present_flag = get_bits1(gb);
1688 if (get_bits1(gb)) { // pps_extension_present_flag
1689 pps->pps_range_extensions_flag = get_bits1(gb);
1690 skip_bits(gb, 7); // pps_extension_7bits
1691 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps->pps_range_extensions_flag) {
1692 if ((ret = pps_range_extensions(gb, avctx, pps, sps)) < 0)
1697 ret = setup_pps(avctx, gb, pps, sps);
1701 if (get_bits_left(gb) < 0) {
1702 av_log(avctx, AV_LOG_ERROR,
1703 "Overread PPS by %d bits\n", -get_bits_left(gb));
1707 remove_pps(ps, pps_id);
1708 ps->pps_list[pps_id] = pps_buf;
1713 av_buffer_unref(&pps_buf);
1717 void ff_hevc_ps_uninit(HEVCParamSets *ps)
1721 for (i = 0; i < FF_ARRAY_ELEMS(ps->vps_list); i++)
1722 av_buffer_unref(&ps->vps_list[i]);
1723 for (i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++)
1724 av_buffer_unref(&ps->sps_list[i]);
1725 for (i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++)
1726 av_buffer_unref(&ps->pps_list[i]);
1733 int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type)
1735 int max_poc_lsb = 1 << sps->log2_max_poc_lsb;
1736 int prev_poc_lsb = pocTid0 % max_poc_lsb;
1737 int prev_poc_msb = pocTid0 - prev_poc_lsb;
1740 if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2)
1741 poc_msb = prev_poc_msb + max_poc_lsb;
1742 else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2)
1743 poc_msb = prev_poc_msb - max_poc_lsb;
1745 poc_msb = prev_poc_msb;
1747 // For BLA picture types, POCmsb is set to 0.
1748 if (nal_unit_type == HEVC_NAL_BLA_W_LP ||
1749 nal_unit_type == HEVC_NAL_BLA_W_RADL ||
1750 nal_unit_type == HEVC_NAL_BLA_N_LP)
1753 return poc_msb + poc_lsb;