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 int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
73 const HEVCSPS *sps, int is_slice_header)
75 HEVCLocalContext *lc = s->HEVClc;
76 uint8_t rps_predict = 0;
83 GetBitContext *gb = &lc->gb;
85 if (rps != sps->st_rps && sps->nb_st_rps)
86 rps_predict = get_bits1(gb);
89 const ShortTermRPS *rps_ridx;
91 unsigned abs_delta_rps;
92 uint8_t use_delta_flag = 0;
93 uint8_t delta_rps_sign;
95 if (is_slice_header) {
96 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
97 if (delta_idx > sps->nb_st_rps) {
98 av_log(s->avctx, AV_LOG_ERROR,
99 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
100 delta_idx, sps->nb_st_rps);
101 return AVERROR_INVALIDDATA;
103 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
105 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
107 delta_rps_sign = get_bits1(gb);
108 abs_delta_rps = get_ue_golomb_long(gb) + 1;
109 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
110 av_log(s->avctx, AV_LOG_ERROR,
111 "Invalid value of abs_delta_rps: %d\n",
113 return AVERROR_INVALIDDATA;
115 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
116 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
117 int used = rps->used[k] = get_bits1(gb);
120 use_delta_flag = get_bits1(gb);
122 if (used || use_delta_flag) {
123 if (i < rps_ridx->num_delta_pocs)
124 delta_poc = delta_rps + rps_ridx->delta_poc[i];
126 delta_poc = delta_rps;
127 rps->delta_poc[k] = delta_poc;
136 rps->num_delta_pocs = k;
137 rps->num_negative_pics = k0;
138 // sort in increasing order (smallest first)
139 if (rps->num_delta_pocs != 0) {
141 for (i = 1; i < rps->num_delta_pocs; i++) {
142 delta_poc = rps->delta_poc[i];
144 for (k = i - 1; k >= 0; k--) {
145 tmp = rps->delta_poc[k];
146 if (delta_poc < tmp) {
147 rps->delta_poc[k + 1] = tmp;
148 rps->used[k + 1] = rps->used[k];
149 rps->delta_poc[k] = delta_poc;
155 if ((rps->num_negative_pics >> 1) != 0) {
157 k = rps->num_negative_pics - 1;
158 // flip the negative values to largest first
159 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
160 delta_poc = rps->delta_poc[i];
162 rps->delta_poc[i] = rps->delta_poc[k];
163 rps->used[i] = rps->used[k];
164 rps->delta_poc[k] = delta_poc;
170 unsigned int prev, nb_positive_pics;
171 rps->num_negative_pics = get_ue_golomb_long(gb);
172 nb_positive_pics = get_ue_golomb_long(gb);
174 if (rps->num_negative_pics >= MAX_REFS ||
175 nb_positive_pics >= MAX_REFS) {
176 av_log(s->avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
177 return AVERROR_INVALIDDATA;
180 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
181 if (rps->num_delta_pocs) {
183 for (i = 0; i < rps->num_negative_pics; i++) {
184 delta_poc = get_ue_golomb_long(gb) + 1;
186 rps->delta_poc[i] = prev;
187 rps->used[i] = get_bits1(gb);
190 for (i = 0; i < nb_positive_pics; i++) {
191 delta_poc = get_ue_golomb_long(gb) + 1;
193 rps->delta_poc[rps->num_negative_pics + i] = prev;
194 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
202 static int decode_profile_tier_level(HEVCContext *s, PTLCommon *ptl)
205 HEVCLocalContext *lc = s->HEVClc;
206 GetBitContext *gb = &lc->gb;
208 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12)
211 ptl->profile_space = get_bits(gb, 2);
212 ptl->tier_flag = get_bits1(gb);
213 ptl->profile_idc = get_bits(gb, 5);
214 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
215 av_log(s->avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
216 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
217 av_log(s->avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
218 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
219 av_log(s->avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
220 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
221 av_log(s->avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
223 av_log(s->avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
225 for (i = 0; i < 32; i++)
226 ptl->profile_compatibility_flag[i] = get_bits1(gb);
227 ptl->progressive_source_flag = get_bits1(gb);
228 ptl->interlaced_source_flag = get_bits1(gb);
229 ptl->non_packed_constraint_flag = get_bits1(gb);
230 ptl->frame_only_constraint_flag = get_bits1(gb);
232 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
233 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
234 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
239 static int parse_ptl(HEVCContext *s, PTL *ptl, int max_num_sub_layers)
242 HEVCLocalContext *lc = s->HEVClc;
243 GetBitContext *gb = &lc->gb;
244 if (decode_profile_tier_level(s, &ptl->general_ptl) < 0 ||
245 get_bits_left(gb) < 8 + 8*2) {
246 av_log(s->avctx, AV_LOG_ERROR, "PTL information too short\n");
250 ptl->general_ptl.level_idc = get_bits(gb, 8);
252 for (i = 0; i < max_num_sub_layers - 1; i++) {
253 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
254 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
257 if (max_num_sub_layers - 1> 0)
258 for (i = max_num_sub_layers - 1; i < 8; i++)
259 skip_bits(gb, 2); // reserved_zero_2bits[i]
260 for (i = 0; i < max_num_sub_layers - 1; i++) {
261 if (ptl->sub_layer_profile_present_flag[i] &&
262 decode_profile_tier_level(s, &ptl->sub_layer_ptl[i]) < 0) {
263 av_log(s->avctx, AV_LOG_ERROR,
264 "PTL information for sublayer %i too short\n", i);
267 if (ptl->sub_layer_level_present_flag[i]) {
268 if (get_bits_left(gb) < 8) {
269 av_log(s->avctx, AV_LOG_ERROR,
270 "Not enough data for sublayer %i level_idc\n", i);
273 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
280 static void decode_sublayer_hrd(HEVCContext *s, unsigned int nb_cpb,
281 int subpic_params_present)
283 GetBitContext *gb = &s->HEVClc->gb;
286 for (i = 0; i < nb_cpb; i++) {
287 get_ue_golomb_long(gb); // bit_rate_value_minus1
288 get_ue_golomb_long(gb); // cpb_size_value_minus1
290 if (subpic_params_present) {
291 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
292 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
294 skip_bits1(gb); // cbr_flag
298 static int decode_hrd(HEVCContext *s, int common_inf_present,
301 GetBitContext *gb = &s->HEVClc->gb;
302 int nal_params_present = 0, vcl_params_present = 0;
303 int subpic_params_present = 0;
306 if (common_inf_present) {
307 nal_params_present = get_bits1(gb);
308 vcl_params_present = get_bits1(gb);
310 if (nal_params_present || vcl_params_present) {
311 subpic_params_present = get_bits1(gb);
313 if (subpic_params_present) {
314 skip_bits(gb, 8); // tick_divisor_minus2
315 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
316 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
317 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
320 skip_bits(gb, 4); // bit_rate_scale
321 skip_bits(gb, 4); // cpb_size_scale
323 if (subpic_params_present)
324 skip_bits(gb, 4); // cpb_size_du_scale
326 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
327 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
328 skip_bits(gb, 5); // dpb_output_delay_length_minus1
332 for (i = 0; i < max_sublayers; i++) {
334 unsigned int nb_cpb = 1;
335 int fixed_rate = get_bits1(gb);
338 fixed_rate = get_bits1(gb);
341 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
343 low_delay = get_bits1(gb);
346 nb_cpb = get_ue_golomb_long(gb) + 1;
347 if (nb_cpb < 1 || nb_cpb > 32) {
348 av_log(s->avctx, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
349 return AVERROR_INVALIDDATA;
353 if (nal_params_present)
354 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
355 if (vcl_params_present)
356 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
361 int ff_hevc_decode_nal_vps(HEVCContext *s)
364 GetBitContext *gb = &s->HEVClc->gb;
367 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
370 return AVERROR(ENOMEM);
371 vps = (HEVCVPS*)vps_buf->data;
373 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");
375 vps_id = get_bits(gb, 4);
376 if (vps_id >= MAX_VPS_COUNT) {
377 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
381 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
382 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
386 vps->vps_max_layers = get_bits(gb, 6) + 1;
387 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
388 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
390 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
391 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
395 if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {
396 av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
397 vps->vps_max_sub_layers);
401 if (parse_ptl(s, &vps->ptl, vps->vps_max_sub_layers) < 0)
404 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
406 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
407 for (; i < vps->vps_max_sub_layers; i++) {
408 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
409 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
410 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
412 if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
413 av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
414 vps->vps_max_dec_pic_buffering[i] - 1);
417 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
418 av_log(s->avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
419 vps->vps_num_reorder_pics[i]);
420 if (s->avctx->err_recognition & AV_EF_EXPLODE)
425 vps->vps_max_layer_id = get_bits(gb, 6);
426 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
427 if ((vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
428 av_log(s->avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
432 for (i = 1; i < vps->vps_num_layer_sets; i++)
433 for (j = 0; j <= vps->vps_max_layer_id; j++)
434 skip_bits(gb, 1); // layer_id_included_flag[i][j]
436 vps->vps_timing_info_present_flag = get_bits1(gb);
437 if (vps->vps_timing_info_present_flag) {
438 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
439 vps->vps_time_scale = get_bits_long(gb, 32);
440 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
441 if (vps->vps_poc_proportional_to_timing_flag)
442 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
443 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
444 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
445 int common_inf_present = 1;
447 get_ue_golomb_long(gb); // hrd_layer_set_idx
449 common_inf_present = get_bits1(gb);
450 decode_hrd(s, common_inf_present, vps->vps_max_sub_layers);
453 get_bits1(gb); /* vps_extension_flag */
455 if (get_bits_left(gb) < 0) {
456 av_log(s->avctx, AV_LOG_ERROR,
457 "Overread VPS by %d bits\n", -get_bits_left(gb));
461 av_buffer_unref(&s->vps_list[vps_id]);
462 s->vps_list[vps_id] = vps_buf;
466 av_buffer_unref(&vps_buf);
467 return AVERROR_INVALIDDATA;
470 static void decode_vui(HEVCContext *s, HEVCSPS *sps)
472 VUI *vui = &sps->vui;
473 GetBitContext *gb = &s->HEVClc->gb;
476 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VUI\n");
478 sar_present = get_bits1(gb);
480 uint8_t sar_idx = get_bits(gb, 8);
481 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
482 vui->sar = vui_sar[sar_idx];
483 else if (sar_idx == 255) {
484 vui->sar.num = get_bits(gb, 16);
485 vui->sar.den = get_bits(gb, 16);
487 av_log(s->avctx, AV_LOG_WARNING,
488 "Unknown SAR index: %u.\n", sar_idx);
491 vui->overscan_info_present_flag = get_bits1(gb);
492 if (vui->overscan_info_present_flag)
493 vui->overscan_appropriate_flag = get_bits1(gb);
495 vui->video_signal_type_present_flag = get_bits1(gb);
496 if (vui->video_signal_type_present_flag) {
497 vui->video_format = get_bits(gb, 3);
498 vui->video_full_range_flag = get_bits1(gb);
499 vui->colour_description_present_flag = get_bits1(gb);
500 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
501 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
502 if (vui->colour_description_present_flag) {
503 vui->colour_primaries = get_bits(gb, 8);
504 vui->transfer_characteristic = get_bits(gb, 8);
505 vui->matrix_coeffs = get_bits(gb, 8);
507 // Set invalid values to "unspecified"
508 if (vui->colour_primaries >= AVCOL_PRI_NB)
509 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
510 if (vui->transfer_characteristic >= AVCOL_TRC_NB)
511 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
512 if (vui->matrix_coeffs >= AVCOL_SPC_NB)
513 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
517 vui->chroma_loc_info_present_flag = get_bits1(gb);
518 if (vui->chroma_loc_info_present_flag) {
519 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
520 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
523 vui->neutra_chroma_indication_flag = get_bits1(gb);
524 vui->field_seq_flag = get_bits1(gb);
525 vui->frame_field_info_present_flag = get_bits1(gb);
527 vui->default_display_window_flag = get_bits1(gb);
528 if (vui->default_display_window_flag) {
529 //TODO: * 2 is only valid for 420
530 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * 2;
531 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * 2;
532 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * 2;
533 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;
535 if (s->apply_defdispwin &&
536 s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
537 av_log(s->avctx, AV_LOG_DEBUG,
538 "discarding vui default display window, "
539 "original values are l:%u r:%u t:%u b:%u\n",
540 vui->def_disp_win.left_offset,
541 vui->def_disp_win.right_offset,
542 vui->def_disp_win.top_offset,
543 vui->def_disp_win.bottom_offset);
545 vui->def_disp_win.left_offset =
546 vui->def_disp_win.right_offset =
547 vui->def_disp_win.top_offset =
548 vui->def_disp_win.bottom_offset = 0;
552 vui->vui_timing_info_present_flag = get_bits1(gb);
554 if (vui->vui_timing_info_present_flag) {
555 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
556 vui->vui_time_scale = get_bits_long(gb, 32);
557 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
558 if (vui->vui_poc_proportional_to_timing_flag)
559 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
560 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
561 if (vui->vui_hrd_parameters_present_flag)
562 decode_hrd(s, 1, sps->max_sub_layers);
565 vui->bitstream_restriction_flag = get_bits1(gb);
566 if (vui->bitstream_restriction_flag) {
567 vui->tiles_fixed_structure_flag = get_bits1(gb);
568 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
569 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
570 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
571 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
572 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
573 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
574 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
578 static void set_default_scaling_list_data(ScalingList *sl)
582 for (matrixId = 0; matrixId < 6; matrixId++) {
584 memset(sl->sl[0][matrixId], 16, 16);
585 sl->sl_dc[0][matrixId] = 16; // default for 16x16
586 sl->sl_dc[1][matrixId] = 16; // default for 32x32
588 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
589 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
590 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
591 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
592 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
593 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
594 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
595 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
596 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
597 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
598 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
599 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
600 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
601 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
602 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
603 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
604 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
605 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
608 static int scaling_list_data(HEVCContext *s, ScalingList *sl, HEVCSPS *sps)
610 GetBitContext *gb = &s->HEVClc->gb;
611 uint8_t scaling_list_pred_mode_flag;
612 int32_t scaling_list_dc_coef[2][6];
613 int size_id, matrix_id, pos;
616 for (size_id = 0; size_id < 4; size_id++)
617 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
618 scaling_list_pred_mode_flag = get_bits1(gb);
619 if (!scaling_list_pred_mode_flag) {
620 unsigned int delta = get_ue_golomb_long(gb);
621 /* Only need to handle non-zero delta. Zero means default,
622 * which should already be in the arrays. */
624 // Copy from previous array.
625 if (matrix_id < delta) {
626 av_log(s->avctx, AV_LOG_ERROR,
627 "Invalid delta in scaling list data: %d.\n", delta);
628 return AVERROR_INVALIDDATA;
631 memcpy(sl->sl[size_id][matrix_id],
632 sl->sl[size_id][matrix_id - delta],
633 size_id > 0 ? 64 : 16);
635 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
638 int next_coef, coef_num;
639 int32_t scaling_list_delta_coef;
642 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
644 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
645 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
646 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
648 for (i = 0; i < coef_num; i++) {
650 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
651 ff_hevc_diag_scan4x4_x[i];
653 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
654 ff_hevc_diag_scan8x8_x[i];
656 scaling_list_delta_coef = get_se_golomb(gb);
657 next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
658 sl->sl[size_id][matrix_id][pos] = next_coef;
663 if (sps->chroma_format_idc == 3) {
664 for (i = 0; i < 64; i++) {
665 sl->sl[3][1][i] = sl->sl[2][1][i];
666 sl->sl[3][2][i] = sl->sl[2][2][i];
667 sl->sl[3][4][i] = sl->sl[2][4][i];
668 sl->sl[3][5][i] = sl->sl[2][5][i];
670 sl->sl_dc[1][1] = sl->sl_dc[0][1];
671 sl->sl_dc[1][2] = sl->sl_dc[0][2];
672 sl->sl_dc[1][4] = sl->sl_dc[0][4];
673 sl->sl_dc[1][5] = sl->sl_dc[0][5];
680 int ff_hevc_decode_nal_sps(HEVCContext *s)
682 const AVPixFmtDescriptor *desc;
683 GetBitContext *gb = &s->HEVClc->gb;
685 unsigned int sps_id = 0;
686 int log2_diff_max_min_transform_block_size;
687 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
691 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
694 return AVERROR(ENOMEM);
695 sps = (HEVCSPS*)sps_buf->data;
697 av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");
701 sps->vps_id = get_bits(gb, 4);
702 if (sps->vps_id >= MAX_VPS_COUNT) {
703 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
704 ret = AVERROR_INVALIDDATA;
708 if (!s->vps_list[sps->vps_id]) {
709 av_log(s->avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
711 ret = AVERROR_INVALIDDATA;
715 sps->max_sub_layers = get_bits(gb, 3) + 1;
716 if (sps->max_sub_layers > MAX_SUB_LAYERS) {
717 av_log(s->avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
718 sps->max_sub_layers);
719 ret = AVERROR_INVALIDDATA;
723 skip_bits1(gb); // temporal_id_nesting_flag
725 if (parse_ptl(s, &sps->ptl, sps->max_sub_layers) < 0)
728 sps_id = get_ue_golomb_long(gb);
729 if (sps_id >= MAX_SPS_COUNT) {
730 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);
731 ret = AVERROR_INVALIDDATA;
735 sps->chroma_format_idc = get_ue_golomb_long(gb);
736 if (!(sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2 || sps->chroma_format_idc == 3)) {
737 avpriv_report_missing_feature(s->avctx, "chroma_format_idc != {1, 2, 3}\n");
738 ret = AVERROR_PATCHWELCOME;
742 if (sps->chroma_format_idc == 3)
743 sps->separate_colour_plane_flag = get_bits1(gb);
745 if (sps->separate_colour_plane_flag)
746 sps->chroma_format_idc = 0;
748 sps->width = get_ue_golomb_long(gb);
749 sps->height = get_ue_golomb_long(gb);
750 if ((ret = av_image_check_size(sps->width,
751 sps->height, 0, s->avctx)) < 0)
754 if (get_bits1(gb)) { // pic_conformance_flag
755 //TODO: * 2 is only valid for 420
756 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * 2;
757 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * 2;
758 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * 2;
759 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;
761 if (s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
762 av_log(s->avctx, AV_LOG_DEBUG,
763 "discarding sps conformance window, "
764 "original values are l:%u r:%u t:%u b:%u\n",
765 sps->pic_conf_win.left_offset,
766 sps->pic_conf_win.right_offset,
767 sps->pic_conf_win.top_offset,
768 sps->pic_conf_win.bottom_offset);
770 sps->pic_conf_win.left_offset =
771 sps->pic_conf_win.right_offset =
772 sps->pic_conf_win.top_offset =
773 sps->pic_conf_win.bottom_offset = 0;
775 sps->output_window = sps->pic_conf_win;
778 sps->bit_depth = get_ue_golomb_long(gb) + 8;
779 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
780 if (bit_depth_chroma != sps->bit_depth) {
781 av_log(s->avctx, AV_LOG_ERROR,
782 "Luma bit depth (%d) is different from chroma bit depth (%d), "
783 "this is unsupported.\n",
784 sps->bit_depth, bit_depth_chroma);
785 ret = AVERROR_INVALIDDATA;
789 switch (sps->bit_depth) {
791 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
792 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
793 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
796 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
797 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
798 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
801 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
802 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
803 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
806 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
807 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
808 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
811 av_log(s->avctx, AV_LOG_ERROR,
812 "4:2:0, 4:2:2, 4:4:4 supports are currently specified for 8, 10 and 12 bits.\n");
813 return AVERROR_PATCHWELCOME;
816 desc = av_pix_fmt_desc_get(sps->pix_fmt);
818 ret = AVERROR(EINVAL);
822 sps->hshift[0] = sps->vshift[0] = 0;
823 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
824 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
826 sps->pixel_shift = sps->bit_depth > 8;
828 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
829 if (sps->log2_max_poc_lsb > 16) {
830 av_log(s->avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
831 sps->log2_max_poc_lsb - 4);
832 ret = AVERROR_INVALIDDATA;
836 sublayer_ordering_info = get_bits1(gb);
837 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
838 for (i = start; i < sps->max_sub_layers; i++) {
839 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
840 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
841 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
842 if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
843 av_log(s->avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
844 sps->temporal_layer[i].max_dec_pic_buffering - 1);
845 ret = AVERROR_INVALIDDATA;
848 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
849 av_log(s->avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
850 sps->temporal_layer[i].num_reorder_pics);
851 if (s->avctx->err_recognition & AV_EF_EXPLODE ||
852 sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {
853 ret = AVERROR_INVALIDDATA;
856 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
860 if (!sublayer_ordering_info) {
861 for (i = 0; i < start; i++) {
862 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
863 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
864 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
868 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
869 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
870 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
871 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
872 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
873 sps->log2_min_tb_size;
875 if (sps->log2_min_tb_size >= sps->log2_min_cb_size) {
876 av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
877 ret = AVERROR_INVALIDDATA;
880 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
881 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
883 sps->scaling_list_enable_flag = get_bits1(gb);
884 if (sps->scaling_list_enable_flag) {
885 set_default_scaling_list_data(&sps->scaling_list);
888 ret = scaling_list_data(s, &sps->scaling_list, sps);
894 sps->amp_enabled_flag = get_bits1(gb);
895 sps->sao_enabled = get_bits1(gb);
897 sps->pcm_enabled_flag = get_bits1(gb);
898 if (sps->pcm_enabled_flag) {
899 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
900 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
901 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
902 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
903 get_ue_golomb_long(gb);
904 if (sps->pcm.bit_depth > sps->bit_depth) {
905 av_log(s->avctx, AV_LOG_ERROR,
906 "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
907 sps->pcm.bit_depth, sps->bit_depth);
908 ret = AVERROR_INVALIDDATA;
912 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
915 sps->nb_st_rps = get_ue_golomb_long(gb);
916 if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {
917 av_log(s->avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
919 ret = AVERROR_INVALIDDATA;
922 for (i = 0; i < sps->nb_st_rps; i++) {
923 if ((ret = ff_hevc_decode_short_term_rps(s, &sps->st_rps[i],
928 sps->long_term_ref_pics_present_flag = get_bits1(gb);
929 if (sps->long_term_ref_pics_present_flag) {
930 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
931 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
932 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
933 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
937 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
938 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
939 sps->vui.sar = (AVRational){0, 1};
940 vui_present = get_bits1(gb);
944 if (get_bits1(gb)) { // sps_extension_flag
945 int sps_extension_flag[1];
946 for (i = 0; i < 1; i++)
947 sps_extension_flag[i] = get_bits1(gb);
948 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
949 if (sps_extension_flag[0]) {
950 int extended_precision_processing_flag;
951 int high_precision_offsets_enabled_flag;
952 int cabac_bypass_alignment_enabled_flag;
954 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
955 sps->transform_skip_context_enabled_flag = get_bits1(gb);
956 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
958 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
960 extended_precision_processing_flag = get_bits1(gb);
961 if (extended_precision_processing_flag)
962 av_log(s->avctx, AV_LOG_WARNING,
963 "extended_precision_processing_flag not yet implemented\n");
965 sps->intra_smoothing_disabled_flag = get_bits1(gb);
966 high_precision_offsets_enabled_flag = get_bits1(gb);
967 if (high_precision_offsets_enabled_flag)
968 av_log(s->avctx, AV_LOG_WARNING,
969 "high_precision_offsets_enabled_flag not yet implemented\n");
971 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
973 cabac_bypass_alignment_enabled_flag = get_bits1(gb);
974 if (cabac_bypass_alignment_enabled_flag)
975 av_log(s->avctx, AV_LOG_WARNING,
976 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
979 if (s->apply_defdispwin) {
980 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
981 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
982 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
983 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
985 if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
986 !(s->avctx->flags & CODEC_FLAG_UNALIGNED)) {
987 sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
988 av_log(s->avctx, AV_LOG_WARNING, "Reducing left output window to %d "
989 "chroma samples to preserve alignment.\n",
990 sps->output_window.left_offset);
992 sps->output_width = sps->width -
993 (sps->output_window.left_offset + sps->output_window.right_offset);
994 sps->output_height = sps->height -
995 (sps->output_window.top_offset + sps->output_window.bottom_offset);
996 if (sps->output_width <= 0 || sps->output_height <= 0) {
997 av_log(s->avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
998 sps->output_width, sps->output_height);
999 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1000 ret = AVERROR_INVALIDDATA;
1003 av_log(s->avctx, AV_LOG_WARNING,
1004 "Displaying the whole video surface.\n");
1005 sps->pic_conf_win.left_offset =
1006 sps->pic_conf_win.right_offset =
1007 sps->pic_conf_win.top_offset =
1008 sps->pic_conf_win.bottom_offset = 0;
1009 sps->output_width = sps->width;
1010 sps->output_height = sps->height;
1013 // Inferred parameters
1014 sps->log2_ctb_size = sps->log2_min_cb_size +
1015 sps->log2_diff_max_min_coding_block_size;
1016 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1018 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1019 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1020 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1022 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1023 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1024 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1025 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1026 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1027 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1028 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1030 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1032 if (sps->width & ((1 << sps->log2_min_cb_size) - 1) ||
1033 sps->height & ((1 << sps->log2_min_cb_size) - 1)) {
1034 av_log(s->avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1038 if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
1039 av_log(s->avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1042 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1043 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1044 sps->max_transform_hierarchy_depth_inter);
1047 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1048 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1049 sps->max_transform_hierarchy_depth_intra);
1052 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1053 av_log(s->avctx, AV_LOG_ERROR,
1054 "max transform block size out of range: %d\n",
1055 sps->log2_max_trafo_size);
1059 if (get_bits_left(gb) < 0) {
1060 av_log(s->avctx, AV_LOG_ERROR,
1061 "Overread SPS by %d bits\n", -get_bits_left(gb));
1065 if (s->avctx->debug & FF_DEBUG_BITSTREAM) {
1066 av_log(s->avctx, AV_LOG_DEBUG,
1067 "Parsed SPS: id %d; coded wxh: %dx%d; "
1068 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1069 sps_id, sps->width, sps->height,
1070 sps->output_width, sps->output_height,
1071 av_get_pix_fmt_name(sps->pix_fmt));
1074 /* check if this is a repeat of an already parsed SPS, then keep the
1076 * otherwise drop all PPSes that depend on it */
1077 if (s->sps_list[sps_id] &&
1078 !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1079 av_buffer_unref(&sps_buf);
1081 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) {
1082 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == sps_id)
1083 av_buffer_unref(&s->pps_list[i]);
1085 if (s->sps_list[sps_id] && s->sps == (HEVCSPS*)s->sps_list[sps_id]->data) {
1086 av_buffer_unref(&s->current_sps);
1087 s->current_sps = av_buffer_ref(s->sps_list[sps_id]);
1088 if (!s->current_sps)
1091 av_buffer_unref(&s->sps_list[sps_id]);
1092 s->sps_list[sps_id] = sps_buf;
1098 av_buffer_unref(&sps_buf);
1102 static void hevc_pps_free(void *opaque, uint8_t *data)
1104 HEVCPPS *pps = (HEVCPPS*)data;
1106 av_freep(&pps->column_width);
1107 av_freep(&pps->row_height);
1108 av_freep(&pps->col_bd);
1109 av_freep(&pps->row_bd);
1110 av_freep(&pps->col_idxX);
1111 av_freep(&pps->ctb_addr_rs_to_ts);
1112 av_freep(&pps->ctb_addr_ts_to_rs);
1113 av_freep(&pps->tile_pos_rs);
1114 av_freep(&pps->tile_id);
1115 av_freep(&pps->min_tb_addr_zs_tab);
1120 static int pps_range_extensions(HEVCContext *s, HEVCPPS *pps, HEVCSPS *sps) {
1121 GetBitContext *gb = &s->HEVClc->gb;
1124 if (pps->transform_skip_enabled_flag) {
1125 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1127 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1128 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1129 if (pps->chroma_qp_offset_list_enabled_flag) {
1130 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1131 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1132 if (pps->chroma_qp_offset_list_len_minus1 && pps->chroma_qp_offset_list_len_minus1 >= 5) {
1133 av_log(s->avctx, AV_LOG_ERROR,
1134 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1135 return AVERROR_INVALIDDATA;
1137 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1138 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1139 if (pps->cb_qp_offset_list[i]) {
1140 av_log(s->avctx, AV_LOG_WARNING,
1141 "cb_qp_offset_list not tested yet.\n");
1143 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1144 if (pps->cr_qp_offset_list[i]) {
1145 av_log(s->avctx, AV_LOG_WARNING,
1146 "cb_qp_offset_list not tested yet.\n");
1150 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1151 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1156 int ff_hevc_decode_nal_pps(HEVCContext *s)
1158 GetBitContext *gb = &s->HEVClc->gb;
1159 HEVCSPS *sps = NULL;
1160 int pic_area_in_ctbs;
1161 int log2_diff_ctb_min_tb_size;
1162 int i, j, x, y, ctb_addr_rs, tile_id;
1164 unsigned int pps_id = 0;
1166 AVBufferRef *pps_buf;
1167 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1170 return AVERROR(ENOMEM);
1172 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1173 hevc_pps_free, NULL, 0);
1176 return AVERROR(ENOMEM);
1179 av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1182 pps->loop_filter_across_tiles_enabled_flag = 1;
1183 pps->num_tile_columns = 1;
1184 pps->num_tile_rows = 1;
1185 pps->uniform_spacing_flag = 1;
1186 pps->disable_dbf = 0;
1187 pps->beta_offset = 0;
1189 pps->log2_max_transform_skip_block_size = 2;
1192 pps_id = get_ue_golomb_long(gb);
1193 if (pps_id >= MAX_PPS_COUNT) {
1194 av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1195 ret = AVERROR_INVALIDDATA;
1198 pps->sps_id = get_ue_golomb_long(gb);
1199 if (pps->sps_id >= MAX_SPS_COUNT) {
1200 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1201 ret = AVERROR_INVALIDDATA;
1204 if (!s->sps_list[pps->sps_id]) {
1205 av_log(s->avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1206 ret = AVERROR_INVALIDDATA;
1209 sps = (HEVCSPS *)s->sps_list[pps->sps_id]->data;
1211 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1212 pps->output_flag_present_flag = get_bits1(gb);
1213 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1215 pps->sign_data_hiding_flag = get_bits1(gb);
1217 pps->cabac_init_present_flag = get_bits1(gb);
1219 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1220 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1222 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1224 pps->constrained_intra_pred_flag = get_bits1(gb);
1225 pps->transform_skip_enabled_flag = get_bits1(gb);
1227 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1228 pps->diff_cu_qp_delta_depth = 0;
1229 if (pps->cu_qp_delta_enabled_flag)
1230 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1232 pps->cb_qp_offset = get_se_golomb(gb);
1233 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1234 av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1236 ret = AVERROR_INVALIDDATA;
1239 pps->cr_qp_offset = get_se_golomb(gb);
1240 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1241 av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1243 ret = AVERROR_INVALIDDATA;
1246 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1248 pps->weighted_pred_flag = get_bits1(gb);
1249 pps->weighted_bipred_flag = get_bits1(gb);
1251 pps->transquant_bypass_enable_flag = get_bits1(gb);
1252 pps->tiles_enabled_flag = get_bits1(gb);
1253 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1255 if (pps->tiles_enabled_flag) {
1256 pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1257 pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1258 if (pps->num_tile_columns == 0 ||
1259 pps->num_tile_columns >= sps->width) {
1260 av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1261 pps->num_tile_columns - 1);
1262 ret = AVERROR_INVALIDDATA;
1265 if (pps->num_tile_rows == 0 ||
1266 pps->num_tile_rows >= sps->height) {
1267 av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1268 pps->num_tile_rows - 1);
1269 ret = AVERROR_INVALIDDATA;
1273 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1274 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1275 if (!pps->column_width || !pps->row_height) {
1276 ret = AVERROR(ENOMEM);
1280 pps->uniform_spacing_flag = get_bits1(gb);
1281 if (!pps->uniform_spacing_flag) {
1283 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1284 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1285 sum += pps->column_width[i];
1287 if (sum >= sps->ctb_width) {
1288 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1289 ret = AVERROR_INVALIDDATA;
1292 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1295 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1296 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1297 sum += pps->row_height[i];
1299 if (sum >= sps->ctb_height) {
1300 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1301 ret = AVERROR_INVALIDDATA;
1304 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1306 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1309 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1311 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1312 if (pps->deblocking_filter_control_present_flag) {
1313 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1314 pps->disable_dbf = get_bits1(gb);
1315 if (!pps->disable_dbf) {
1316 pps->beta_offset = get_se_golomb(gb) * 2;
1317 pps->tc_offset = get_se_golomb(gb) * 2;
1318 if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1319 av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1320 pps->beta_offset/2);
1321 ret = AVERROR_INVALIDDATA;
1324 if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1325 av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1327 ret = AVERROR_INVALIDDATA;
1333 pps->scaling_list_data_present_flag = get_bits1(gb);
1334 if (pps->scaling_list_data_present_flag) {
1335 set_default_scaling_list_data(&pps->scaling_list);
1336 ret = scaling_list_data(s, &pps->scaling_list, sps);
1340 pps->lists_modification_present_flag = get_bits1(gb);
1341 pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1342 if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1343 av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1344 pps->log2_parallel_merge_level - 2);
1345 ret = AVERROR_INVALIDDATA;
1349 pps->slice_header_extension_present_flag = get_bits1(gb);
1351 if (get_bits1(gb)) { // pps_extension_present_flag
1352 int pps_range_extensions_flag = get_bits1(gb);
1353 /* int pps_extension_7bits = */ get_bits(gb, 7);
1354 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps_range_extensions_flag) {
1355 pps_range_extensions(s, pps, sps);
1359 // Inferred parameters
1360 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1361 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1362 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1363 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
1364 ret = AVERROR(ENOMEM);
1368 if (pps->uniform_spacing_flag) {
1369 if (!pps->column_width) {
1370 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1371 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1373 if (!pps->column_width || !pps->row_height) {
1374 ret = AVERROR(ENOMEM);
1378 for (i = 0; i < pps->num_tile_columns; i++) {
1379 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1380 (i * sps->ctb_width) / pps->num_tile_columns;
1383 for (i = 0; i < pps->num_tile_rows; i++) {
1384 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1385 (i * sps->ctb_height) / pps->num_tile_rows;
1390 for (i = 0; i < pps->num_tile_columns; i++)
1391 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1394 for (i = 0; i < pps->num_tile_rows; i++)
1395 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1397 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1398 if (i > pps->col_bd[j])
1400 pps->col_idxX[i] = j;
1406 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1408 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1409 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1410 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1411 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1412 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1413 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1414 ret = AVERROR(ENOMEM);
1418 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1419 int tb_x = ctb_addr_rs % sps->ctb_width;
1420 int tb_y = ctb_addr_rs / sps->ctb_width;
1425 for (i = 0; i < pps->num_tile_columns; i++) {
1426 if (tb_x < pps->col_bd[i + 1]) {
1432 for (i = 0; i < pps->num_tile_rows; i++) {
1433 if (tb_y < pps->row_bd[i + 1]) {
1439 for (i = 0; i < tile_x; i++)
1440 val += pps->row_height[tile_y] * pps->column_width[i];
1441 for (i = 0; i < tile_y; i++)
1442 val += sps->ctb_width * pps->row_height[i];
1444 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1445 tb_x - pps->col_bd[tile_x];
1447 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1448 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1451 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1452 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1453 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1454 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1455 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1457 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1458 if (!pps->tile_pos_rs) {
1459 ret = AVERROR(ENOMEM);
1463 for (j = 0; j < pps->num_tile_rows; j++)
1464 for (i = 0; i < pps->num_tile_columns; i++)
1465 pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1467 log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
1468 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1469 for (y = 0; y < sps->tb_mask+2; y++) {
1470 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1471 pps->min_tb_addr_zs_tab[y] = -1;
1473 for (y = 0; y < sps->tb_mask+1; y++) {
1474 for (x = 0; x < sps->tb_mask+1; x++) {
1475 int tb_x = x >> log2_diff_ctb_min_tb_size;
1476 int tb_y = y >> log2_diff_ctb_min_tb_size;
1477 int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1478 int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1479 (log2_diff_ctb_min_tb_size * 2);
1480 for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
1482 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1484 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1488 if (get_bits_left(gb) < 0) {
1489 av_log(s->avctx, AV_LOG_ERROR,
1490 "Overread PPS by %d bits\n", -get_bits_left(gb));
1494 av_buffer_unref(&s->pps_list[pps_id]);
1495 s->pps_list[pps_id] = pps_buf;
1500 av_buffer_unref(&pps_buf);