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"
30 static const uint8_t default_scaling_list_intra[] = {
31 16, 16, 16, 16, 17, 18, 21, 24,
32 16, 16, 16, 16, 17, 19, 22, 25,
33 16, 16, 17, 18, 20, 22, 25, 29,
34 16, 16, 18, 21, 24, 27, 31, 36,
35 17, 17, 20, 24, 30, 35, 41, 47,
36 18, 19, 22, 27, 35, 44, 54, 65,
37 21, 22, 25, 31, 41, 54, 70, 88,
38 24, 25, 29, 36, 47, 65, 88, 115
41 static const uint8_t default_scaling_list_inter[] = {
42 16, 16, 16, 16, 17, 18, 20, 24,
43 16, 16, 16, 17, 18, 20, 24, 25,
44 16, 16, 17, 18, 20, 24, 25, 28,
45 16, 17, 18, 20, 24, 25, 28, 33,
46 17, 18, 20, 24, 25, 28, 33, 41,
47 18, 20, 24, 25, 28, 33, 41, 54,
48 20, 24, 25, 28, 33, 41, 54, 71,
49 24, 25, 28, 33, 41, 54, 71, 91
52 static const AVRational vui_sar[] = {
72 static void remove_pps(HEVCContext *s, int id)
74 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)
76 av_buffer_unref(&s->pps_list[id]);
79 static void remove_sps(HEVCContext *s, int id)
82 if (s->sps_list[id]) {
83 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)
86 /* drop all PPS that depend on this SPS */
87 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++)
88 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == id)
91 if (s->sps_list[id] && s->sps == (HEVCSPS*)s->sps_list[id]->data) {
92 av_buffer_unref(&s->current_sps);
93 s->current_sps = av_buffer_ref(s->sps_list[id]);
98 av_buffer_unref(&s->sps_list[id]);
101 static void remove_vps(HEVCContext *s, int id)
104 if (s->vps_list[id]) {
105 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)
108 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
109 if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id)
112 av_buffer_unref(&s->vps_list[id]);
115 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
116 const HEVCSPS *sps, int is_slice_header)
118 HEVCLocalContext *lc = s->HEVClc;
119 uint8_t rps_predict = 0;
126 GetBitContext *gb = &lc->gb;
128 if (rps != sps->st_rps && sps->nb_st_rps)
129 rps_predict = get_bits1(gb);
132 const ShortTermRPS *rps_ridx;
134 unsigned abs_delta_rps;
135 uint8_t use_delta_flag = 0;
136 uint8_t delta_rps_sign;
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(s->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;
146 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
148 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
150 delta_rps_sign = get_bits1(gb);
151 abs_delta_rps = get_ue_golomb_long(gb) + 1;
152 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
153 av_log(s->avctx, AV_LOG_ERROR,
154 "Invalid value of abs_delta_rps: %d\n",
156 return AVERROR_INVALIDDATA;
158 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
159 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
160 int used = rps->used[k] = get_bits1(gb);
163 use_delta_flag = get_bits1(gb);
165 if (used || use_delta_flag) {
166 if (i < rps_ridx->num_delta_pocs)
167 delta_poc = delta_rps + rps_ridx->delta_poc[i];
169 delta_poc = delta_rps;
170 rps->delta_poc[k] = delta_poc;
179 rps->num_delta_pocs = k;
180 rps->num_negative_pics = k0;
181 // sort in increasing order (smallest first)
182 if (rps->num_delta_pocs != 0) {
184 for (i = 1; i < rps->num_delta_pocs; i++) {
185 delta_poc = rps->delta_poc[i];
187 for (k = i - 1; k >= 0; k--) {
188 tmp = rps->delta_poc[k];
189 if (delta_poc < tmp) {
190 rps->delta_poc[k + 1] = tmp;
191 rps->used[k + 1] = rps->used[k];
192 rps->delta_poc[k] = delta_poc;
198 if ((rps->num_negative_pics >> 1) != 0) {
200 k = rps->num_negative_pics - 1;
201 // flip the negative values to largest first
202 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
203 delta_poc = rps->delta_poc[i];
205 rps->delta_poc[i] = rps->delta_poc[k];
206 rps->used[i] = rps->used[k];
207 rps->delta_poc[k] = delta_poc;
213 unsigned int prev, nb_positive_pics;
214 rps->num_negative_pics = get_ue_golomb_long(gb);
215 nb_positive_pics = get_ue_golomb_long(gb);
217 if (rps->num_negative_pics >= MAX_REFS ||
218 nb_positive_pics >= MAX_REFS) {
219 av_log(s->avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
220 return AVERROR_INVALIDDATA;
223 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
224 if (rps->num_delta_pocs) {
226 for (i = 0; i < rps->num_negative_pics; i++) {
227 delta_poc = get_ue_golomb_long(gb) + 1;
229 rps->delta_poc[i] = prev;
230 rps->used[i] = get_bits1(gb);
233 for (i = 0; i < nb_positive_pics; i++) {
234 delta_poc = get_ue_golomb_long(gb) + 1;
236 rps->delta_poc[rps->num_negative_pics + i] = prev;
237 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
245 static int decode_profile_tier_level(HEVCContext *s, PTLCommon *ptl)
248 HEVCLocalContext *lc = s->HEVClc;
249 GetBitContext *gb = &lc->gb;
251 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12)
254 ptl->profile_space = get_bits(gb, 2);
255 ptl->tier_flag = get_bits1(gb);
256 ptl->profile_idc = get_bits(gb, 5);
257 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
258 av_log(s->avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
259 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
260 av_log(s->avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
261 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
262 av_log(s->avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
263 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
264 av_log(s->avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
266 av_log(s->avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
268 for (i = 0; i < 32; i++)
269 ptl->profile_compatibility_flag[i] = get_bits1(gb);
270 ptl->progressive_source_flag = get_bits1(gb);
271 ptl->interlaced_source_flag = get_bits1(gb);
272 ptl->non_packed_constraint_flag = get_bits1(gb);
273 ptl->frame_only_constraint_flag = get_bits1(gb);
275 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
276 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
277 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
282 static int parse_ptl(HEVCContext *s, PTL *ptl, int max_num_sub_layers)
285 HEVCLocalContext *lc = s->HEVClc;
286 GetBitContext *gb = &lc->gb;
287 if (decode_profile_tier_level(s, &ptl->general_ptl) < 0 ||
288 get_bits_left(gb) < 8 + 8*2) {
289 av_log(s->avctx, AV_LOG_ERROR, "PTL information too short\n");
293 ptl->general_ptl.level_idc = get_bits(gb, 8);
295 for (i = 0; i < max_num_sub_layers - 1; i++) {
296 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
297 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
300 if (max_num_sub_layers - 1> 0)
301 for (i = max_num_sub_layers - 1; i < 8; i++)
302 skip_bits(gb, 2); // reserved_zero_2bits[i]
303 for (i = 0; i < max_num_sub_layers - 1; i++) {
304 if (ptl->sub_layer_profile_present_flag[i] &&
305 decode_profile_tier_level(s, &ptl->sub_layer_ptl[i]) < 0) {
306 av_log(s->avctx, AV_LOG_ERROR,
307 "PTL information for sublayer %i too short\n", i);
310 if (ptl->sub_layer_level_present_flag[i]) {
311 if (get_bits_left(gb) < 8) {
312 av_log(s->avctx, AV_LOG_ERROR,
313 "Not enough data for sublayer %i level_idc\n", i);
316 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
323 static void decode_sublayer_hrd(HEVCContext *s, unsigned int nb_cpb,
324 int subpic_params_present)
326 GetBitContext *gb = &s->HEVClc->gb;
329 for (i = 0; i < nb_cpb; i++) {
330 get_ue_golomb_long(gb); // bit_rate_value_minus1
331 get_ue_golomb_long(gb); // cpb_size_value_minus1
333 if (subpic_params_present) {
334 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
335 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
337 skip_bits1(gb); // cbr_flag
341 static int decode_hrd(HEVCContext *s, int common_inf_present,
344 GetBitContext *gb = &s->HEVClc->gb;
345 int nal_params_present = 0, vcl_params_present = 0;
346 int subpic_params_present = 0;
349 if (common_inf_present) {
350 nal_params_present = get_bits1(gb);
351 vcl_params_present = get_bits1(gb);
353 if (nal_params_present || vcl_params_present) {
354 subpic_params_present = get_bits1(gb);
356 if (subpic_params_present) {
357 skip_bits(gb, 8); // tick_divisor_minus2
358 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
359 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
360 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
363 skip_bits(gb, 4); // bit_rate_scale
364 skip_bits(gb, 4); // cpb_size_scale
366 if (subpic_params_present)
367 skip_bits(gb, 4); // cpb_size_du_scale
369 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
370 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
371 skip_bits(gb, 5); // dpb_output_delay_length_minus1
375 for (i = 0; i < max_sublayers; i++) {
377 unsigned int nb_cpb = 1;
378 int fixed_rate = get_bits1(gb);
381 fixed_rate = get_bits1(gb);
384 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
386 low_delay = get_bits1(gb);
389 nb_cpb = get_ue_golomb_long(gb) + 1;
390 if (nb_cpb < 1 || nb_cpb > 32) {
391 av_log(s->avctx, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
392 return AVERROR_INVALIDDATA;
396 if (nal_params_present)
397 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
398 if (vcl_params_present)
399 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
404 int ff_hevc_decode_nal_vps(HEVCContext *s)
407 GetBitContext *gb = &s->HEVClc->gb;
410 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
413 return AVERROR(ENOMEM);
414 vps = (HEVCVPS*)vps_buf->data;
416 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");
418 vps_id = get_bits(gb, 4);
419 if (vps_id >= MAX_VPS_COUNT) {
420 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
424 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
425 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
429 vps->vps_max_layers = get_bits(gb, 6) + 1;
430 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
431 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
433 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
434 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
438 if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {
439 av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
440 vps->vps_max_sub_layers);
444 if (parse_ptl(s, &vps->ptl, vps->vps_max_sub_layers) < 0)
447 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
449 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
450 for (; i < vps->vps_max_sub_layers; i++) {
451 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
452 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
453 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
455 if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
456 av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
457 vps->vps_max_dec_pic_buffering[i] - 1);
460 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
461 av_log(s->avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
462 vps->vps_num_reorder_pics[i]);
463 if (s->avctx->err_recognition & AV_EF_EXPLODE)
468 vps->vps_max_layer_id = get_bits(gb, 6);
469 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
470 if ((vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
471 av_log(s->avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
475 for (i = 1; i < vps->vps_num_layer_sets; i++)
476 for (j = 0; j <= vps->vps_max_layer_id; j++)
477 skip_bits(gb, 1); // layer_id_included_flag[i][j]
479 vps->vps_timing_info_present_flag = get_bits1(gb);
480 if (vps->vps_timing_info_present_flag) {
481 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
482 vps->vps_time_scale = get_bits_long(gb, 32);
483 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
484 if (vps->vps_poc_proportional_to_timing_flag)
485 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
486 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
487 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
488 int common_inf_present = 1;
490 get_ue_golomb_long(gb); // hrd_layer_set_idx
492 common_inf_present = get_bits1(gb);
493 decode_hrd(s, common_inf_present, vps->vps_max_sub_layers);
496 get_bits1(gb); /* vps_extension_flag */
498 if (get_bits_left(gb) < 0) {
499 av_log(s->avctx, AV_LOG_ERROR,
500 "Overread VPS by %d bits\n", -get_bits_left(gb));
504 if (s->vps_list[vps_id] &&
505 !memcmp(s->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {
506 av_buffer_unref(&vps_buf);
508 remove_vps(s, vps_id);
509 s->vps_list[vps_id] = vps_buf;
515 av_buffer_unref(&vps_buf);
516 return AVERROR_INVALIDDATA;
519 static void decode_vui(HEVCContext *s, HEVCSPS *sps)
521 VUI *vui = &sps->vui;
522 GetBitContext *gb = &s->HEVClc->gb;
523 GetBitContext backup;
524 int sar_present, alt = 0;
526 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VUI\n");
528 sar_present = get_bits1(gb);
530 uint8_t sar_idx = get_bits(gb, 8);
531 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
532 vui->sar = vui_sar[sar_idx];
533 else if (sar_idx == 255) {
534 vui->sar.num = get_bits(gb, 16);
535 vui->sar.den = get_bits(gb, 16);
537 av_log(s->avctx, AV_LOG_WARNING,
538 "Unknown SAR index: %u.\n", sar_idx);
541 vui->overscan_info_present_flag = get_bits1(gb);
542 if (vui->overscan_info_present_flag)
543 vui->overscan_appropriate_flag = get_bits1(gb);
545 vui->video_signal_type_present_flag = get_bits1(gb);
546 if (vui->video_signal_type_present_flag) {
547 vui->video_format = get_bits(gb, 3);
548 vui->video_full_range_flag = get_bits1(gb);
549 vui->colour_description_present_flag = get_bits1(gb);
550 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
551 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
552 if (vui->colour_description_present_flag) {
553 vui->colour_primaries = get_bits(gb, 8);
554 vui->transfer_characteristic = get_bits(gb, 8);
555 vui->matrix_coeffs = get_bits(gb, 8);
557 // Set invalid values to "unspecified"
558 if (vui->colour_primaries >= AVCOL_PRI_NB)
559 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
560 if (vui->transfer_characteristic >= AVCOL_TRC_NB)
561 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
562 if (vui->matrix_coeffs >= AVCOL_SPC_NB)
563 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
567 vui->chroma_loc_info_present_flag = get_bits1(gb);
568 if (vui->chroma_loc_info_present_flag) {
569 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
570 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
573 vui->neutra_chroma_indication_flag = get_bits1(gb);
574 vui->field_seq_flag = get_bits1(gb);
575 vui->frame_field_info_present_flag = get_bits1(gb);
577 if (get_bits_left(gb) >= 68 && show_bits_long(gb, 21) == 0x100000) {
578 vui->default_display_window_flag = 0;
579 av_log(s->avctx, AV_LOG_WARNING, "Invalid default display window\n");
581 vui->default_display_window_flag = get_bits1(gb);
582 // Backup context in case an alternate header is detected
583 memcpy(&backup, gb, sizeof(backup));
585 if (vui->default_display_window_flag) {
586 //TODO: * 2 is only valid for 420
587 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * 2;
588 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * 2;
589 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * 2;
590 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;
592 if (s->apply_defdispwin &&
593 s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
594 av_log(s->avctx, AV_LOG_DEBUG,
595 "discarding vui default display window, "
596 "original values are l:%u r:%u t:%u b:%u\n",
597 vui->def_disp_win.left_offset,
598 vui->def_disp_win.right_offset,
599 vui->def_disp_win.top_offset,
600 vui->def_disp_win.bottom_offset);
602 vui->def_disp_win.left_offset =
603 vui->def_disp_win.right_offset =
604 vui->def_disp_win.top_offset =
605 vui->def_disp_win.bottom_offset = 0;
609 vui->vui_timing_info_present_flag = get_bits1(gb);
611 if (vui->vui_timing_info_present_flag) {
612 if( get_bits_left(gb) < 66) {
613 // The alternate syntax seem to have timing info located
614 // at where def_disp_win is normally located
615 av_log(s->avctx, AV_LOG_WARNING,
616 "Strange VUI timing information, retrying...\n");
617 vui->default_display_window_flag = 0;
618 memset(&vui->def_disp_win, 0, sizeof(vui->def_disp_win));
619 memcpy(gb, &backup, sizeof(backup));
622 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
623 vui->vui_time_scale = get_bits_long(gb, 32);
625 av_log(s->avctx, AV_LOG_INFO, "Retry got %i/%i fps\n",
626 vui->vui_time_scale, vui->vui_num_units_in_tick);
628 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
629 if (vui->vui_poc_proportional_to_timing_flag)
630 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
631 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
632 if (vui->vui_hrd_parameters_present_flag)
633 decode_hrd(s, 1, sps->max_sub_layers);
636 vui->bitstream_restriction_flag = get_bits1(gb);
637 if (vui->bitstream_restriction_flag) {
638 vui->tiles_fixed_structure_flag = get_bits1(gb);
639 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
640 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
641 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
642 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
643 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
644 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
645 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
649 static void set_default_scaling_list_data(ScalingList *sl)
653 for (matrixId = 0; matrixId < 6; matrixId++) {
655 memset(sl->sl[0][matrixId], 16, 16);
656 sl->sl_dc[0][matrixId] = 16; // default for 16x16
657 sl->sl_dc[1][matrixId] = 16; // default for 32x32
659 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
660 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
661 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
662 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
663 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
664 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
665 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
666 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
667 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
668 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
669 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
670 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
671 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
672 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
673 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
674 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
675 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
676 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
679 static int scaling_list_data(HEVCContext *s, ScalingList *sl, HEVCSPS *sps)
681 GetBitContext *gb = &s->HEVClc->gb;
682 uint8_t scaling_list_pred_mode_flag;
683 int32_t scaling_list_dc_coef[2][6];
684 int size_id, matrix_id, pos;
687 for (size_id = 0; size_id < 4; size_id++)
688 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
689 scaling_list_pred_mode_flag = get_bits1(gb);
690 if (!scaling_list_pred_mode_flag) {
691 unsigned int delta = get_ue_golomb_long(gb);
692 /* Only need to handle non-zero delta. Zero means default,
693 * which should already be in the arrays. */
695 // Copy from previous array.
696 if (matrix_id < delta) {
697 av_log(s->avctx, AV_LOG_ERROR,
698 "Invalid delta in scaling list data: %d.\n", delta);
699 return AVERROR_INVALIDDATA;
702 memcpy(sl->sl[size_id][matrix_id],
703 sl->sl[size_id][matrix_id - delta],
704 size_id > 0 ? 64 : 16);
706 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
709 int next_coef, coef_num;
710 int32_t scaling_list_delta_coef;
713 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
715 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
716 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
717 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
719 for (i = 0; i < coef_num; i++) {
721 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
722 ff_hevc_diag_scan4x4_x[i];
724 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
725 ff_hevc_diag_scan8x8_x[i];
727 scaling_list_delta_coef = get_se_golomb(gb);
728 next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
729 sl->sl[size_id][matrix_id][pos] = next_coef;
734 if (sps->chroma_format_idc == 3) {
735 for (i = 0; i < 64; i++) {
736 sl->sl[3][1][i] = sl->sl[2][1][i];
737 sl->sl[3][2][i] = sl->sl[2][2][i];
738 sl->sl[3][4][i] = sl->sl[2][4][i];
739 sl->sl[3][5][i] = sl->sl[2][5][i];
741 sl->sl_dc[1][1] = sl->sl_dc[0][1];
742 sl->sl_dc[1][2] = sl->sl_dc[0][2];
743 sl->sl_dc[1][4] = sl->sl_dc[0][4];
744 sl->sl_dc[1][5] = sl->sl_dc[0][5];
751 int ff_hevc_decode_nal_sps(HEVCContext *s)
753 const AVPixFmtDescriptor *desc;
754 GetBitContext *gb = &s->HEVClc->gb;
756 unsigned int sps_id = 0;
757 int log2_diff_max_min_transform_block_size;
758 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
762 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
765 return AVERROR(ENOMEM);
766 sps = (HEVCSPS*)sps_buf->data;
768 av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");
772 sps->vps_id = get_bits(gb, 4);
773 if (sps->vps_id >= MAX_VPS_COUNT) {
774 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
775 ret = AVERROR_INVALIDDATA;
779 if (!s->vps_list[sps->vps_id]) {
780 av_log(s->avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
782 ret = AVERROR_INVALIDDATA;
786 sps->max_sub_layers = get_bits(gb, 3) + 1;
787 if (sps->max_sub_layers > MAX_SUB_LAYERS) {
788 av_log(s->avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
789 sps->max_sub_layers);
790 ret = AVERROR_INVALIDDATA;
794 skip_bits1(gb); // temporal_id_nesting_flag
796 if (parse_ptl(s, &sps->ptl, sps->max_sub_layers) < 0)
799 sps_id = get_ue_golomb_long(gb);
800 if (sps_id >= MAX_SPS_COUNT) {
801 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);
802 ret = AVERROR_INVALIDDATA;
806 sps->chroma_format_idc = get_ue_golomb_long(gb);
808 if (sps->chroma_format_idc == 3)
809 sps->separate_colour_plane_flag = get_bits1(gb);
811 if (sps->separate_colour_plane_flag)
812 sps->chroma_format_idc = 0;
814 sps->width = get_ue_golomb_long(gb);
815 sps->height = get_ue_golomb_long(gb);
816 if ((ret = av_image_check_size(sps->width,
817 sps->height, 0, s->avctx)) < 0)
820 if (get_bits1(gb)) { // pic_conformance_flag
821 //TODO: * 2 is only valid for 420
822 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * 2;
823 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * 2;
824 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * 2;
825 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;
827 if (s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
828 av_log(s->avctx, AV_LOG_DEBUG,
829 "discarding sps conformance window, "
830 "original values are l:%u r:%u t:%u b:%u\n",
831 sps->pic_conf_win.left_offset,
832 sps->pic_conf_win.right_offset,
833 sps->pic_conf_win.top_offset,
834 sps->pic_conf_win.bottom_offset);
836 sps->pic_conf_win.left_offset =
837 sps->pic_conf_win.right_offset =
838 sps->pic_conf_win.top_offset =
839 sps->pic_conf_win.bottom_offset = 0;
841 sps->output_window = sps->pic_conf_win;
844 sps->bit_depth = get_ue_golomb_long(gb) + 8;
845 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
846 if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) {
847 av_log(s->avctx, AV_LOG_ERROR,
848 "Luma bit depth (%d) is different from chroma bit depth (%d), "
849 "this is unsupported.\n",
850 sps->bit_depth, bit_depth_chroma);
851 ret = AVERROR_INVALIDDATA;
855 switch (sps->bit_depth) {
857 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
858 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
859 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
860 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
863 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY16;
864 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
865 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
866 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
869 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY16;
870 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
871 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
872 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
875 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY16;
876 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
877 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
878 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
881 av_log(s->avctx, AV_LOG_ERROR,
882 "4:2:0, 4:2:2, 4:4:4 supports are currently specified for 8, 10 and 12 bits.\n");
883 ret = AVERROR_PATCHWELCOME;
887 desc = av_pix_fmt_desc_get(sps->pix_fmt);
889 ret = AVERROR(EINVAL);
893 sps->hshift[0] = sps->vshift[0] = 0;
894 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
895 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
897 sps->pixel_shift = sps->bit_depth > 8;
899 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
900 if (sps->log2_max_poc_lsb > 16) {
901 av_log(s->avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
902 sps->log2_max_poc_lsb - 4);
903 ret = AVERROR_INVALIDDATA;
907 sublayer_ordering_info = get_bits1(gb);
908 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
909 for (i = start; i < sps->max_sub_layers; i++) {
910 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
911 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
912 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
913 if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
914 av_log(s->avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
915 sps->temporal_layer[i].max_dec_pic_buffering - 1);
916 ret = AVERROR_INVALIDDATA;
919 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
920 av_log(s->avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
921 sps->temporal_layer[i].num_reorder_pics);
922 if (s->avctx->err_recognition & AV_EF_EXPLODE ||
923 sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {
924 ret = AVERROR_INVALIDDATA;
927 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
931 if (!sublayer_ordering_info) {
932 for (i = 0; i < start; i++) {
933 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
934 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
935 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
939 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
940 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
941 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
942 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
943 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
944 sps->log2_min_tb_size;
946 if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) {
947 av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size);
948 ret = AVERROR_INVALIDDATA;
952 if (sps->log2_diff_max_min_coding_block_size > 30) {
953 av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_coding_block_size", sps->log2_diff_max_min_coding_block_size);
954 ret = AVERROR_INVALIDDATA;
958 if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) {
959 av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
960 ret = AVERROR_INVALIDDATA;
964 if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) {
965 av_log(s->avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size);
966 ret = AVERROR_INVALIDDATA;
970 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
971 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
973 sps->scaling_list_enable_flag = get_bits1(gb);
974 if (sps->scaling_list_enable_flag) {
975 set_default_scaling_list_data(&sps->scaling_list);
978 ret = scaling_list_data(s, &sps->scaling_list, sps);
984 sps->amp_enabled_flag = get_bits1(gb);
985 sps->sao_enabled = get_bits1(gb);
987 sps->pcm_enabled_flag = get_bits1(gb);
988 if (sps->pcm_enabled_flag) {
989 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
990 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
991 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
992 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
993 get_ue_golomb_long(gb);
994 if (sps->pcm.bit_depth > sps->bit_depth) {
995 av_log(s->avctx, AV_LOG_ERROR,
996 "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
997 sps->pcm.bit_depth, sps->bit_depth);
998 ret = AVERROR_INVALIDDATA;
1002 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
1005 sps->nb_st_rps = get_ue_golomb_long(gb);
1006 if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {
1007 av_log(s->avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
1009 ret = AVERROR_INVALIDDATA;
1012 for (i = 0; i < sps->nb_st_rps; i++) {
1013 if ((ret = ff_hevc_decode_short_term_rps(s, &sps->st_rps[i],
1018 sps->long_term_ref_pics_present_flag = get_bits1(gb);
1019 if (sps->long_term_ref_pics_present_flag) {
1020 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
1021 if (sps->num_long_term_ref_pics_sps > 31U) {
1022 av_log(s->avctx, AV_LOG_ERROR, "num_long_term_ref_pics_sps %d is out of range.\n",
1023 sps->num_long_term_ref_pics_sps);
1026 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
1027 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
1028 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
1032 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
1033 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
1034 sps->vui.sar = (AVRational){0, 1};
1035 vui_present = get_bits1(gb);
1039 if (get_bits1(gb)) { // sps_extension_flag
1040 int sps_extension_flag[1];
1041 for (i = 0; i < 1; i++)
1042 sps_extension_flag[i] = get_bits1(gb);
1043 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
1044 if (sps_extension_flag[0]) {
1045 int extended_precision_processing_flag;
1046 int high_precision_offsets_enabled_flag;
1047 int cabac_bypass_alignment_enabled_flag;
1049 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
1050 sps->transform_skip_context_enabled_flag = get_bits1(gb);
1051 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
1053 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
1055 extended_precision_processing_flag = get_bits1(gb);
1056 if (extended_precision_processing_flag)
1057 av_log(s->avctx, AV_LOG_WARNING,
1058 "extended_precision_processing_flag not yet implemented\n");
1060 sps->intra_smoothing_disabled_flag = get_bits1(gb);
1061 high_precision_offsets_enabled_flag = get_bits1(gb);
1062 if (high_precision_offsets_enabled_flag)
1063 av_log(s->avctx, AV_LOG_WARNING,
1064 "high_precision_offsets_enabled_flag not yet implemented\n");
1066 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
1068 cabac_bypass_alignment_enabled_flag = get_bits1(gb);
1069 if (cabac_bypass_alignment_enabled_flag)
1070 av_log(s->avctx, AV_LOG_WARNING,
1071 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
1074 if (s->apply_defdispwin) {
1075 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
1076 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
1077 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
1078 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
1080 if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
1081 !(s->avctx->flags & CODEC_FLAG_UNALIGNED)) {
1082 sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
1083 av_log(s->avctx, AV_LOG_WARNING, "Reducing left output window to %d "
1084 "chroma samples to preserve alignment.\n",
1085 sps->output_window.left_offset);
1087 sps->output_width = sps->width -
1088 (sps->output_window.left_offset + sps->output_window.right_offset);
1089 sps->output_height = sps->height -
1090 (sps->output_window.top_offset + sps->output_window.bottom_offset);
1091 if (sps->width <= sps->output_window.left_offset + (int64_t)sps->output_window.right_offset ||
1092 sps->height <= sps->output_window.top_offset + (int64_t)sps->output_window.bottom_offset) {
1093 av_log(s->avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
1094 sps->output_width, sps->output_height);
1095 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1096 ret = AVERROR_INVALIDDATA;
1099 av_log(s->avctx, AV_LOG_WARNING,
1100 "Displaying the whole video surface.\n");
1101 memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win));
1102 memset(&sps->output_window, 0, sizeof(sps->output_window));
1103 sps->output_width = sps->width;
1104 sps->output_height = sps->height;
1107 // Inferred parameters
1108 sps->log2_ctb_size = sps->log2_min_cb_size +
1109 sps->log2_diff_max_min_coding_block_size;
1110 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1112 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1113 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1114 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1116 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1117 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1118 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1119 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1120 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1121 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1122 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1124 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1126 if (sps->width & ((1 << sps->log2_min_cb_size) - 1) ||
1127 sps->height & ((1 << sps->log2_min_cb_size) - 1)) {
1128 av_log(s->avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1132 if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
1133 av_log(s->avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1136 if (sps->log2_ctb_size < 4) {
1139 "log2_ctb_size %d differs from the bounds of any known profile\n",
1140 sps->log2_ctb_size);
1141 avpriv_request_sample(s->avctx, "log2_ctb_size %d", sps->log2_ctb_size);
1144 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1145 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1146 sps->max_transform_hierarchy_depth_inter);
1149 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1150 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1151 sps->max_transform_hierarchy_depth_intra);
1154 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1155 av_log(s->avctx, AV_LOG_ERROR,
1156 "max transform block size out of range: %d\n",
1157 sps->log2_max_trafo_size);
1161 if (get_bits_left(gb) < 0) {
1162 av_log(s->avctx, AV_LOG_ERROR,
1163 "Overread SPS by %d bits\n", -get_bits_left(gb));
1167 if (s->avctx->debug & FF_DEBUG_BITSTREAM) {
1168 av_log(s->avctx, AV_LOG_DEBUG,
1169 "Parsed SPS: id %d; coded wxh: %dx%d; "
1170 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1171 sps_id, sps->width, sps->height,
1172 sps->output_width, sps->output_height,
1173 av_get_pix_fmt_name(sps->pix_fmt));
1176 /* check if this is a repeat of an already parsed SPS, then keep the
1178 * otherwise drop all PPSes that depend on it */
1179 if (s->sps_list[sps_id] &&
1180 !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1181 av_buffer_unref(&sps_buf);
1183 remove_sps(s, sps_id);
1184 s->sps_list[sps_id] = sps_buf;
1190 av_buffer_unref(&sps_buf);
1194 static void hevc_pps_free(void *opaque, uint8_t *data)
1196 HEVCPPS *pps = (HEVCPPS*)data;
1198 av_freep(&pps->column_width);
1199 av_freep(&pps->row_height);
1200 av_freep(&pps->col_bd);
1201 av_freep(&pps->row_bd);
1202 av_freep(&pps->col_idxX);
1203 av_freep(&pps->ctb_addr_rs_to_ts);
1204 av_freep(&pps->ctb_addr_ts_to_rs);
1205 av_freep(&pps->tile_pos_rs);
1206 av_freep(&pps->tile_id);
1207 av_freep(&pps->min_tb_addr_zs_tab);
1212 static int pps_range_extensions(HEVCContext *s, HEVCPPS *pps, HEVCSPS *sps) {
1213 GetBitContext *gb = &s->HEVClc->gb;
1216 if (pps->transform_skip_enabled_flag) {
1217 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1219 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1220 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1221 if (pps->chroma_qp_offset_list_enabled_flag) {
1222 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1223 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1224 if (pps->chroma_qp_offset_list_len_minus1 && pps->chroma_qp_offset_list_len_minus1 >= 5) {
1225 av_log(s->avctx, AV_LOG_ERROR,
1226 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1227 return AVERROR_INVALIDDATA;
1229 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1230 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1231 if (pps->cb_qp_offset_list[i]) {
1232 av_log(s->avctx, AV_LOG_WARNING,
1233 "cb_qp_offset_list not tested yet.\n");
1235 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1236 if (pps->cr_qp_offset_list[i]) {
1237 av_log(s->avctx, AV_LOG_WARNING,
1238 "cb_qp_offset_list not tested yet.\n");
1242 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1243 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1248 int ff_hevc_decode_nal_pps(HEVCContext *s)
1250 GetBitContext *gb = &s->HEVClc->gb;
1251 HEVCSPS *sps = NULL;
1252 int pic_area_in_ctbs;
1253 int log2_diff_ctb_min_tb_size;
1254 int i, j, x, y, ctb_addr_rs, tile_id;
1256 unsigned int pps_id = 0;
1258 AVBufferRef *pps_buf;
1259 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1262 return AVERROR(ENOMEM);
1264 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1265 hevc_pps_free, NULL, 0);
1268 return AVERROR(ENOMEM);
1271 av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1274 pps->loop_filter_across_tiles_enabled_flag = 1;
1275 pps->num_tile_columns = 1;
1276 pps->num_tile_rows = 1;
1277 pps->uniform_spacing_flag = 1;
1278 pps->disable_dbf = 0;
1279 pps->beta_offset = 0;
1281 pps->log2_max_transform_skip_block_size = 2;
1284 pps_id = get_ue_golomb_long(gb);
1285 if (pps_id >= MAX_PPS_COUNT) {
1286 av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1287 ret = AVERROR_INVALIDDATA;
1290 pps->sps_id = get_ue_golomb_long(gb);
1291 if (pps->sps_id >= MAX_SPS_COUNT) {
1292 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1293 ret = AVERROR_INVALIDDATA;
1296 if (!s->sps_list[pps->sps_id]) {
1297 av_log(s->avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1298 ret = AVERROR_INVALIDDATA;
1301 sps = (HEVCSPS *)s->sps_list[pps->sps_id]->data;
1303 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1304 pps->output_flag_present_flag = get_bits1(gb);
1305 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1307 pps->sign_data_hiding_flag = get_bits1(gb);
1309 pps->cabac_init_present_flag = get_bits1(gb);
1311 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1312 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1314 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1316 pps->constrained_intra_pred_flag = get_bits1(gb);
1317 pps->transform_skip_enabled_flag = get_bits1(gb);
1319 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1320 pps->diff_cu_qp_delta_depth = 0;
1321 if (pps->cu_qp_delta_enabled_flag)
1322 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1324 if (pps->diff_cu_qp_delta_depth < 0 ||
1325 pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
1326 av_log(s->avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
1327 pps->diff_cu_qp_delta_depth);
1328 ret = AVERROR_INVALIDDATA;
1332 pps->cb_qp_offset = get_se_golomb(gb);
1333 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1334 av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1336 ret = AVERROR_INVALIDDATA;
1339 pps->cr_qp_offset = get_se_golomb(gb);
1340 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1341 av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1343 ret = AVERROR_INVALIDDATA;
1346 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1348 pps->weighted_pred_flag = get_bits1(gb);
1349 pps->weighted_bipred_flag = get_bits1(gb);
1351 pps->transquant_bypass_enable_flag = get_bits1(gb);
1352 pps->tiles_enabled_flag = get_bits1(gb);
1353 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1355 if (pps->tiles_enabled_flag) {
1356 pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1357 pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1358 if (pps->num_tile_columns == 0 ||
1359 pps->num_tile_columns >= sps->width) {
1360 av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1361 pps->num_tile_columns - 1);
1362 ret = AVERROR_INVALIDDATA;
1365 if (pps->num_tile_rows == 0 ||
1366 pps->num_tile_rows >= sps->height) {
1367 av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1368 pps->num_tile_rows - 1);
1369 ret = AVERROR_INVALIDDATA;
1373 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1374 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1375 if (!pps->column_width || !pps->row_height) {
1376 ret = AVERROR(ENOMEM);
1380 pps->uniform_spacing_flag = get_bits1(gb);
1381 if (!pps->uniform_spacing_flag) {
1383 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1384 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1385 sum += pps->column_width[i];
1387 if (sum >= sps->ctb_width) {
1388 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1389 ret = AVERROR_INVALIDDATA;
1392 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1395 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1396 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1397 sum += pps->row_height[i];
1399 if (sum >= sps->ctb_height) {
1400 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1401 ret = AVERROR_INVALIDDATA;
1404 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1406 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1409 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1411 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1412 if (pps->deblocking_filter_control_present_flag) {
1413 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1414 pps->disable_dbf = get_bits1(gb);
1415 if (!pps->disable_dbf) {
1416 pps->beta_offset = get_se_golomb(gb) * 2;
1417 pps->tc_offset = get_se_golomb(gb) * 2;
1418 if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1419 av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1420 pps->beta_offset/2);
1421 ret = AVERROR_INVALIDDATA;
1424 if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1425 av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1427 ret = AVERROR_INVALIDDATA;
1433 pps->scaling_list_data_present_flag = get_bits1(gb);
1434 if (pps->scaling_list_data_present_flag) {
1435 set_default_scaling_list_data(&pps->scaling_list);
1436 ret = scaling_list_data(s, &pps->scaling_list, sps);
1440 pps->lists_modification_present_flag = get_bits1(gb);
1441 pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1442 if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1443 av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1444 pps->log2_parallel_merge_level - 2);
1445 ret = AVERROR_INVALIDDATA;
1449 pps->slice_header_extension_present_flag = get_bits1(gb);
1451 if (get_bits1(gb)) { // pps_extension_present_flag
1452 int pps_range_extensions_flag = get_bits1(gb);
1453 /* int pps_extension_7bits = */ get_bits(gb, 7);
1454 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps_range_extensions_flag) {
1455 if ((ret = pps_range_extensions(s, pps, sps)) < 0)
1460 // Inferred parameters
1461 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1462 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1463 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1464 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
1465 ret = AVERROR(ENOMEM);
1469 if (pps->uniform_spacing_flag) {
1470 if (!pps->column_width) {
1471 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1472 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1474 if (!pps->column_width || !pps->row_height) {
1475 ret = AVERROR(ENOMEM);
1479 for (i = 0; i < pps->num_tile_columns; i++) {
1480 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1481 (i * sps->ctb_width) / pps->num_tile_columns;
1484 for (i = 0; i < pps->num_tile_rows; i++) {
1485 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1486 (i * sps->ctb_height) / pps->num_tile_rows;
1491 for (i = 0; i < pps->num_tile_columns; i++)
1492 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1495 for (i = 0; i < pps->num_tile_rows; i++)
1496 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1498 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1499 if (i > pps->col_bd[j])
1501 pps->col_idxX[i] = j;
1507 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1509 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1510 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1511 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1512 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1513 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1514 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1515 ret = AVERROR(ENOMEM);
1519 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1520 int tb_x = ctb_addr_rs % sps->ctb_width;
1521 int tb_y = ctb_addr_rs / sps->ctb_width;
1526 for (i = 0; i < pps->num_tile_columns; i++) {
1527 if (tb_x < pps->col_bd[i + 1]) {
1533 for (i = 0; i < pps->num_tile_rows; i++) {
1534 if (tb_y < pps->row_bd[i + 1]) {
1540 for (i = 0; i < tile_x; i++)
1541 val += pps->row_height[tile_y] * pps->column_width[i];
1542 for (i = 0; i < tile_y; i++)
1543 val += sps->ctb_width * pps->row_height[i];
1545 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1546 tb_x - pps->col_bd[tile_x];
1548 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1549 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1552 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1553 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1554 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1555 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1556 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1558 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1559 if (!pps->tile_pos_rs) {
1560 ret = AVERROR(ENOMEM);
1564 for (j = 0; j < pps->num_tile_rows; j++)
1565 for (i = 0; i < pps->num_tile_columns; i++)
1566 pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1568 log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
1569 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1570 for (y = 0; y < sps->tb_mask+2; y++) {
1571 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1572 pps->min_tb_addr_zs_tab[y] = -1;
1574 for (y = 0; y < sps->tb_mask+1; y++) {
1575 for (x = 0; x < sps->tb_mask+1; x++) {
1576 int tb_x = x >> log2_diff_ctb_min_tb_size;
1577 int tb_y = y >> log2_diff_ctb_min_tb_size;
1578 int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1579 int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1580 (log2_diff_ctb_min_tb_size * 2);
1581 for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
1583 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1585 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1589 if (get_bits_left(gb) < 0) {
1590 av_log(s->avctx, AV_LOG_ERROR,
1591 "Overread PPS by %d bits\n", -get_bits_left(gb));
1595 remove_pps(s, pps_id);
1596 s->pps_list[pps_id] = pps_buf;
1601 av_buffer_unref(&pps_buf);