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 Libav.
11 * Libav 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 * Libav 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 Libav; 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"
31 static const uint8_t default_scaling_list_intra[] = {
32 16, 16, 16, 16, 17, 18, 21, 24,
33 16, 16, 16, 16, 17, 19, 22, 25,
34 16, 16, 17, 18, 20, 22, 25, 29,
35 16, 16, 18, 21, 24, 27, 31, 36,
36 17, 17, 20, 24, 30, 35, 41, 47,
37 18, 19, 22, 27, 35, 44, 54, 65,
38 21, 22, 25, 31, 41, 54, 70, 88,
39 24, 25, 29, 36, 47, 65, 88, 115
42 static const uint8_t default_scaling_list_inter[] = {
43 16, 16, 16, 16, 17, 18, 20, 24,
44 16, 16, 16, 17, 18, 20, 24, 25,
45 16, 16, 17, 18, 20, 24, 25, 28,
46 16, 17, 18, 20, 24, 25, 28, 33,
47 17, 18, 20, 24, 25, 28, 33, 41,
48 18, 20, 24, 25, 28, 33, 41, 54,
49 20, 24, 25, 28, 33, 41, 54, 71,
50 24, 25, 28, 33, 41, 54, 71, 91
53 static const AVRational vui_sar[] = {
73 static void remove_pps(HEVCContext *s, int id)
75 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)
77 av_buffer_unref(&s->pps_list[id]);
80 static void remove_sps(HEVCContext *s, int id)
83 if (s->sps_list[id]) {
84 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)
87 /* drop all PPS that depend on this SPS */
88 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++)
89 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == id)
92 av_buffer_unref(&s->sps_list[id]);
95 static void remove_vps(HEVCContext *s, int id)
98 if (s->vps_list[id]) {
99 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)
102 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
103 if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id)
106 av_buffer_unref(&s->vps_list[id]);
109 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
110 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
112 uint8_t rps_predict = 0;
119 if (rps != sps->st_rps && sps->nb_st_rps)
120 rps_predict = get_bits1(gb);
123 const ShortTermRPS *rps_ridx;
124 int delta_rps, abs_delta_rps;
125 uint8_t use_delta_flag = 0;
126 uint8_t delta_rps_sign;
128 if (is_slice_header) {
129 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
130 if (delta_idx > sps->nb_st_rps) {
131 av_log(avctx, AV_LOG_ERROR,
132 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
133 delta_idx, sps->nb_st_rps);
134 return AVERROR_INVALIDDATA;
136 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
138 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
140 delta_rps_sign = get_bits1(gb);
141 abs_delta_rps = get_ue_golomb_long(gb) + 1;
142 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
143 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
144 int used = rps->used[k] = get_bits1(gb);
147 use_delta_flag = get_bits1(gb);
149 if (used || use_delta_flag) {
150 if (i < rps_ridx->num_delta_pocs)
151 delta_poc = delta_rps + rps_ridx->delta_poc[i];
153 delta_poc = delta_rps;
154 rps->delta_poc[k] = delta_poc;
163 rps->num_delta_pocs = k;
164 rps->num_negative_pics = k0;
165 // sort in increasing order (smallest first)
166 if (rps->num_delta_pocs != 0) {
168 for (i = 1; i < rps->num_delta_pocs; i++) {
169 delta_poc = rps->delta_poc[i];
171 for (k = i - 1; k >= 0; k--) {
172 tmp = rps->delta_poc[k];
173 if (delta_poc < tmp) {
174 rps->delta_poc[k + 1] = tmp;
175 rps->used[k + 1] = rps->used[k];
176 rps->delta_poc[k] = delta_poc;
182 if ((rps->num_negative_pics >> 1) != 0) {
184 k = rps->num_negative_pics - 1;
185 // flip the negative values to largest first
186 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
187 delta_poc = rps->delta_poc[i];
189 rps->delta_poc[i] = rps->delta_poc[k];
190 rps->used[i] = rps->used[k];
191 rps->delta_poc[k] = delta_poc;
197 unsigned int prev, nb_positive_pics;
198 rps->num_negative_pics = get_ue_golomb_long(gb);
199 nb_positive_pics = get_ue_golomb_long(gb);
201 if (rps->num_negative_pics >= MAX_REFS ||
202 nb_positive_pics >= MAX_REFS) {
203 av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
204 return AVERROR_INVALIDDATA;
207 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
208 if (rps->num_delta_pocs) {
210 for (i = 0; i < rps->num_negative_pics; i++) {
211 delta_poc = get_ue_golomb_long(gb) + 1;
213 rps->delta_poc[i] = prev;
214 rps->used[i] = get_bits1(gb);
217 for (i = 0; i < nb_positive_pics; i++) {
218 delta_poc = get_ue_golomb_long(gb) + 1;
220 rps->delta_poc[rps->num_negative_pics + i] = prev;
221 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
229 static void decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,
234 ptl->profile_space = get_bits(gb, 2);
235 ptl->tier_flag = get_bits1(gb);
236 ptl->profile_idc = get_bits(gb, 5);
237 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
238 av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
239 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
240 av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
241 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
242 av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
244 av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
246 for (i = 0; i < 32; i++)
247 ptl->profile_compatibility_flag[i] = get_bits1(gb);
248 ptl->progressive_source_flag = get_bits1(gb);
249 ptl->interlaced_source_flag = get_bits1(gb);
250 ptl->non_packed_constraint_flag = get_bits1(gb);
251 ptl->frame_only_constraint_flag = get_bits1(gb);
253 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
254 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
255 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
258 static void parse_ptl(GetBitContext *gb, AVCodecContext *avctx,
259 PTL *ptl, int max_num_sub_layers)
262 decode_profile_tier_level(gb, avctx, &ptl->general_ptl);
263 ptl->general_ptl.level_idc = get_bits(gb, 8);
265 for (i = 0; i < max_num_sub_layers - 1; i++) {
266 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
267 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
269 if (max_num_sub_layers - 1 > 0)
270 for (i = max_num_sub_layers - 1; i < 8; i++)
271 skip_bits(gb, 2); // reserved_zero_2bits[i]
272 for (i = 0; i < max_num_sub_layers - 1; i++) {
273 if (ptl->sub_layer_profile_present_flag[i])
274 decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]);
275 if (ptl->sub_layer_level_present_flag[i])
276 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
280 static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,
281 int subpic_params_present)
285 for (i = 0; i < nb_cpb; i++) {
286 get_ue_golomb_long(gb); // bit_rate_value_minus1
287 get_ue_golomb_long(gb); // cpb_size_value_minus1
289 if (subpic_params_present) {
290 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
291 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
293 skip_bits1(gb); // cbr_flag
297 static void decode_hrd(GetBitContext *gb, int common_inf_present,
300 int nal_params_present = 0, vcl_params_present = 0;
301 int subpic_params_present = 0;
304 if (common_inf_present) {
305 nal_params_present = get_bits1(gb);
306 vcl_params_present = get_bits1(gb);
308 if (nal_params_present || vcl_params_present) {
309 subpic_params_present = get_bits1(gb);
311 if (subpic_params_present) {
312 skip_bits(gb, 8); // tick_divisor_minus2
313 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
314 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
315 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
318 skip_bits(gb, 4); // bit_rate_scale
319 skip_bits(gb, 4); // cpb_size_scale
321 if (subpic_params_present)
322 skip_bits(gb, 4); // cpb_size_du_scale
324 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
325 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
326 skip_bits(gb, 5); // dpb_output_delay_length_minus1
330 for (i = 0; i < max_sublayers; i++) {
332 unsigned int nb_cpb = 1;
333 int fixed_rate = get_bits1(gb);
336 fixed_rate = get_bits1(gb);
339 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
341 low_delay = get_bits1(gb);
344 nb_cpb = get_ue_golomb_long(gb) + 1;
346 if (nal_params_present)
347 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
348 if (vcl_params_present)
349 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
353 int ff_hevc_decode_nal_vps(HEVCContext *s)
356 GetBitContext *gb = &s->HEVClc.gb;
359 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
362 return AVERROR(ENOMEM);
363 vps = (HEVCVPS*)vps_buf->data;
365 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");
367 vps_id = get_bits(gb, 4);
368 if (vps_id >= MAX_VPS_COUNT) {
369 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
373 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
374 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
378 vps->vps_max_layers = get_bits(gb, 6) + 1;
379 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
380 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
382 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
383 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
387 if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {
388 av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
389 vps->vps_max_sub_layers);
393 parse_ptl(gb, s->avctx, &vps->ptl, vps->vps_max_sub_layers);
395 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
397 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
398 for (; i < vps->vps_max_sub_layers; i++) {
399 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
400 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
401 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
403 if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE) {
404 av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
405 vps->vps_max_dec_pic_buffering[i] - 1);
408 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
409 av_log(s->avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
410 vps->vps_num_reorder_pics[i]);
411 if (s->avctx->err_recognition & AV_EF_EXPLODE)
416 vps->vps_max_layer_id = get_bits(gb, 6);
417 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
418 for (i = 1; i < vps->vps_num_layer_sets; i++)
419 for (j = 0; j <= vps->vps_max_layer_id; j++)
420 skip_bits(gb, 1); // layer_id_included_flag[i][j]
422 vps->vps_timing_info_present_flag = get_bits1(gb);
423 if (vps->vps_timing_info_present_flag) {
424 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
425 vps->vps_time_scale = get_bits_long(gb, 32);
426 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
427 if (vps->vps_poc_proportional_to_timing_flag)
428 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
429 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
430 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
431 int common_inf_present = 1;
433 get_ue_golomb_long(gb); // hrd_layer_set_idx
435 common_inf_present = get_bits1(gb);
436 decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers);
439 get_bits1(gb); /* vps_extension_flag */
441 if (s->vps_list[vps_id] &&
442 !memcmp(s->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {
443 av_buffer_unref(&vps_buf);
445 remove_vps(s, vps_id);
446 s->vps_list[vps_id] = vps_buf;
452 av_buffer_unref(&vps_buf);
453 return AVERROR_INVALIDDATA;
456 static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,
457 int apply_defdispwin, HEVCSPS *sps)
459 VUI *vui = &sps->vui;
462 av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n");
464 sar_present = get_bits1(gb);
466 uint8_t sar_idx = get_bits(gb, 8);
467 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
468 vui->sar = vui_sar[sar_idx];
469 else if (sar_idx == 255) {
470 vui->sar.num = get_bits(gb, 16);
471 vui->sar.den = get_bits(gb, 16);
473 av_log(avctx, AV_LOG_WARNING,
474 "Unknown SAR index: %u.\n", sar_idx);
477 vui->overscan_info_present_flag = get_bits1(gb);
478 if (vui->overscan_info_present_flag)
479 vui->overscan_appropriate_flag = get_bits1(gb);
481 vui->video_signal_type_present_flag = get_bits1(gb);
482 if (vui->video_signal_type_present_flag) {
483 vui->video_format = get_bits(gb, 3);
484 vui->video_full_range_flag = get_bits1(gb);
485 vui->colour_description_present_flag = get_bits1(gb);
486 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
487 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
488 if (vui->colour_description_present_flag) {
489 vui->colour_primaries = get_bits(gb, 8);
490 vui->transfer_characteristic = get_bits(gb, 8);
491 vui->matrix_coeffs = get_bits(gb, 8);
493 // Set invalid values to "unspecified"
494 if (vui->colour_primaries >= AVCOL_PRI_NB)
495 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
496 if (vui->transfer_characteristic >= AVCOL_TRC_NB)
497 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
498 if (vui->matrix_coeffs >= AVCOL_SPC_NB)
499 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
503 vui->chroma_loc_info_present_flag = get_bits1(gb);
504 if (vui->chroma_loc_info_present_flag) {
505 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
506 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
509 vui->neutra_chroma_indication_flag = get_bits1(gb);
510 vui->field_seq_flag = get_bits1(gb);
511 vui->frame_field_info_present_flag = get_bits1(gb);
513 vui->default_display_window_flag = get_bits1(gb);
514 if (vui->default_display_window_flag) {
515 //TODO: * 2 is only valid for 420
516 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * 2;
517 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * 2;
518 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * 2;
519 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;
521 if (apply_defdispwin &&
522 avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
523 av_log(avctx, AV_LOG_DEBUG,
524 "discarding vui default display window, "
525 "original values are l:%u r:%u t:%u b:%u\n",
526 vui->def_disp_win.left_offset,
527 vui->def_disp_win.right_offset,
528 vui->def_disp_win.top_offset,
529 vui->def_disp_win.bottom_offset);
531 vui->def_disp_win.left_offset =
532 vui->def_disp_win.right_offset =
533 vui->def_disp_win.top_offset =
534 vui->def_disp_win.bottom_offset = 0;
538 vui->vui_timing_info_present_flag = get_bits1(gb);
539 if (vui->vui_timing_info_present_flag) {
540 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
541 vui->vui_time_scale = get_bits_long(gb, 32);
542 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
543 if (vui->vui_poc_proportional_to_timing_flag)
544 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
545 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
546 if (vui->vui_hrd_parameters_present_flag)
547 decode_hrd(gb, 1, sps->max_sub_layers);
550 vui->bitstream_restriction_flag = get_bits1(gb);
551 if (vui->bitstream_restriction_flag) {
552 vui->tiles_fixed_structure_flag = get_bits1(gb);
553 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
554 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
555 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
556 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
557 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
558 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
559 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
563 static void set_default_scaling_list_data(ScalingList *sl)
567 for (matrixId = 0; matrixId < 6; matrixId++) {
569 memset(sl->sl[0][matrixId], 16, 16);
570 sl->sl_dc[0][matrixId] = 16; // default for 16x16
571 sl->sl_dc[1][matrixId] = 16; // default for 32x32
573 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
574 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
575 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
576 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
577 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
578 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
579 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
580 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
581 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
582 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
583 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
584 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
585 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
586 memcpy(sl->sl[3][1], default_scaling_list_inter, 64);
589 static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl)
591 uint8_t scaling_list_pred_mode_flag[4][6];
592 int32_t scaling_list_dc_coef[2][6];
593 int size_id, matrix_id, i, pos;
595 for (size_id = 0; size_id < 4; size_id++)
596 for (matrix_id = 0; matrix_id < (size_id == 3 ? 2 : 6); matrix_id++) {
597 scaling_list_pred_mode_flag[size_id][matrix_id] = get_bits1(gb);
598 if (!scaling_list_pred_mode_flag[size_id][matrix_id]) {
599 unsigned int delta = get_ue_golomb_long(gb);
600 /* Only need to handle non-zero delta. Zero means default,
601 * which should already be in the arrays. */
603 // Copy from previous array.
604 if (matrix_id < delta) {
605 av_log(avctx, AV_LOG_ERROR,
606 "Invalid delta in scaling list data: %d.\n", delta);
607 return AVERROR_INVALIDDATA;
610 memcpy(sl->sl[size_id][matrix_id],
611 sl->sl[size_id][matrix_id - delta],
612 size_id > 0 ? 64 : 16);
614 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
617 int next_coef, coef_num;
618 int32_t scaling_list_delta_coef;
621 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
623 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
624 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
625 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
627 for (i = 0; i < coef_num; i++) {
629 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
630 ff_hevc_diag_scan4x4_x[i];
632 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
633 ff_hevc_diag_scan8x8_x[i];
635 scaling_list_delta_coef = get_se_golomb(gb);
636 next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
637 sl->sl[size_id][matrix_id][pos] = next_coef;
645 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
646 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)
648 const AVPixFmtDescriptor *desc;
650 int log2_diff_max_min_transform_block_size;
651 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
656 sps->vps_id = get_bits(gb, 4);
657 if (sps->vps_id >= MAX_VPS_COUNT) {
658 av_log(avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
659 ret = AVERROR_INVALIDDATA;
663 if (vps_list && !vps_list[sps->vps_id]) {
664 av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
666 ret = AVERROR_INVALIDDATA;
670 sps->max_sub_layers = get_bits(gb, 3) + 1;
671 if (sps->max_sub_layers > MAX_SUB_LAYERS) {
672 av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
673 sps->max_sub_layers);
674 ret = AVERROR_INVALIDDATA;
678 skip_bits1(gb); // temporal_id_nesting_flag
680 parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers);
682 *sps_id = get_ue_golomb_long(gb);
683 if (*sps_id >= MAX_SPS_COUNT) {
684 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);
685 ret = AVERROR_INVALIDDATA;
689 sps->chroma_format_idc = get_ue_golomb_long(gb);
690 if (sps->chroma_format_idc != 1) {
691 avpriv_report_missing_feature(avctx, "chroma_format_idc != 1\n");
692 ret = AVERROR_PATCHWELCOME;
696 if (sps->chroma_format_idc == 3)
697 sps->separate_colour_plane_flag = get_bits1(gb);
699 sps->width = get_ue_golomb_long(gb);
700 sps->height = get_ue_golomb_long(gb);
701 if ((ret = av_image_check_size(sps->width,
702 sps->height, 0, avctx)) < 0)
705 if (get_bits1(gb)) { // pic_conformance_flag
706 //TODO: * 2 is only valid for 420
707 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * 2;
708 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * 2;
709 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * 2;
710 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;
712 if (avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
713 av_log(avctx, AV_LOG_DEBUG,
714 "discarding sps conformance window, "
715 "original values are l:%u r:%u t:%u b:%u\n",
716 sps->pic_conf_win.left_offset,
717 sps->pic_conf_win.right_offset,
718 sps->pic_conf_win.top_offset,
719 sps->pic_conf_win.bottom_offset);
721 sps->pic_conf_win.left_offset =
722 sps->pic_conf_win.right_offset =
723 sps->pic_conf_win.top_offset =
724 sps->pic_conf_win.bottom_offset = 0;
726 sps->output_window = sps->pic_conf_win;
729 sps->bit_depth = get_ue_golomb_long(gb) + 8;
730 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
731 if (bit_depth_chroma != sps->bit_depth) {
732 av_log(avctx, AV_LOG_ERROR,
733 "Luma bit depth (%d) is different from chroma bit depth (%d), "
734 "this is unsupported.\n",
735 sps->bit_depth, bit_depth_chroma);
736 ret = AVERROR_INVALIDDATA;
740 if (sps->chroma_format_idc == 1) {
741 switch (sps->bit_depth) {
742 case 8: sps->pix_fmt = AV_PIX_FMT_YUV420P; break;
743 case 9: sps->pix_fmt = AV_PIX_FMT_YUV420P9; break;
744 case 10: sps->pix_fmt = AV_PIX_FMT_YUV420P10; break;
746 av_log(avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
748 ret = AVERROR_PATCHWELCOME;
752 av_log(avctx, AV_LOG_ERROR,
753 "non-4:2:0 support is currently unspecified.\n");
754 return AVERROR_PATCHWELCOME;
757 desc = av_pix_fmt_desc_get(sps->pix_fmt);
759 ret = AVERROR(EINVAL);
763 sps->hshift[0] = sps->vshift[0] = 0;
764 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
765 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
767 sps->pixel_shift = sps->bit_depth > 8;
769 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
770 if (sps->log2_max_poc_lsb > 16) {
771 av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
772 sps->log2_max_poc_lsb - 4);
773 ret = AVERROR_INVALIDDATA;
777 sublayer_ordering_info = get_bits1(gb);
778 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
779 for (i = start; i < sps->max_sub_layers; i++) {
780 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
781 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
782 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
783 if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
784 av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
785 sps->temporal_layer[i].max_dec_pic_buffering - 1);
786 ret = AVERROR_INVALIDDATA;
789 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
790 av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
791 sps->temporal_layer[i].num_reorder_pics);
792 if (avctx->err_recognition & AV_EF_EXPLODE ||
793 sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {
794 ret = AVERROR_INVALIDDATA;
797 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
801 if (!sublayer_ordering_info) {
802 for (i = 0; i < start; i++) {
803 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
804 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
805 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
809 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
810 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
811 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
812 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
813 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
814 sps->log2_min_tb_size;
816 if (sps->log2_min_tb_size >= sps->log2_min_cb_size) {
817 av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
818 ret = AVERROR_INVALIDDATA;
821 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
822 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
824 sps->scaling_list_enable_flag = get_bits1(gb);
825 if (sps->scaling_list_enable_flag) {
826 set_default_scaling_list_data(&sps->scaling_list);
829 ret = scaling_list_data(gb, avctx, &sps->scaling_list);
835 sps->amp_enabled_flag = get_bits1(gb);
836 sps->sao_enabled = get_bits1(gb);
838 sps->pcm_enabled_flag = get_bits1(gb);
839 if (sps->pcm_enabled_flag) {
840 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
841 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
842 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
843 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
844 get_ue_golomb_long(gb);
845 if (sps->pcm.bit_depth > sps->bit_depth) {
846 av_log(avctx, AV_LOG_ERROR,
847 "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
848 sps->pcm.bit_depth, sps->bit_depth);
849 ret = AVERROR_INVALIDDATA;
853 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
856 sps->nb_st_rps = get_ue_golomb_long(gb);
857 if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {
858 av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
860 ret = AVERROR_INVALIDDATA;
863 for (i = 0; i < sps->nb_st_rps; i++) {
864 if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],
869 sps->long_term_ref_pics_present_flag = get_bits1(gb);
870 if (sps->long_term_ref_pics_present_flag) {
871 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
872 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
873 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
874 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
878 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
879 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
880 sps->vui.sar = (AVRational){0, 1};
881 vui_present = get_bits1(gb);
883 decode_vui(gb, avctx, apply_defdispwin, sps);
884 skip_bits1(gb); // sps_extension_flag
886 if (apply_defdispwin) {
887 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
888 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
889 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
890 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
892 if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
893 !(avctx->flags & CODEC_FLAG_UNALIGNED)) {
894 sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
895 av_log(avctx, AV_LOG_WARNING, "Reducing left output window to %d "
896 "chroma samples to preserve alignment.\n",
897 sps->output_window.left_offset);
899 sps->output_width = sps->width -
900 (sps->output_window.left_offset + sps->output_window.right_offset);
901 sps->output_height = sps->height -
902 (sps->output_window.top_offset + sps->output_window.bottom_offset);
903 if (sps->output_width <= 0 || sps->output_height <= 0) {
904 av_log(avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
905 sps->output_width, sps->output_height);
906 if (avctx->err_recognition & AV_EF_EXPLODE) {
907 ret = AVERROR_INVALIDDATA;
910 av_log(avctx, AV_LOG_WARNING,
911 "Displaying the whole video surface.\n");
912 sps->output_window.left_offset =
913 sps->output_window.right_offset =
914 sps->output_window.top_offset =
915 sps->output_window.bottom_offset = 0;
916 sps->output_width = sps->width;
917 sps->output_height = sps->height;
920 // Inferred parameters
921 sps->log2_ctb_size = sps->log2_min_cb_size +
922 sps->log2_diff_max_min_coding_block_size;
923 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
925 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
926 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
927 sps->ctb_size = sps->ctb_width * sps->ctb_height;
929 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
930 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
931 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
932 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
933 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
934 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
936 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
938 if (sps->width & ((1 << sps->log2_min_cb_size) - 1) ||
939 sps->height & ((1 << sps->log2_min_cb_size) - 1)) {
940 av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
944 if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
945 av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
948 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
949 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
950 sps->max_transform_hierarchy_depth_inter);
953 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
954 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
955 sps->max_transform_hierarchy_depth_intra);
958 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
959 av_log(avctx, AV_LOG_ERROR,
960 "max transform block size out of range: %d\n",
961 sps->log2_max_trafo_size);
971 int ff_hevc_decode_nal_sps(HEVCContext *s)
974 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
979 return AVERROR(ENOMEM);
980 sps = (HEVCSPS*)sps_buf->data;
982 av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");
984 ret = ff_hevc_parse_sps(sps, &s->HEVClc.gb, &sps_id,
986 s->vps_list, s->avctx);
988 av_buffer_unref(&sps_buf);
992 if (s->avctx->debug & FF_DEBUG_BITSTREAM) {
993 av_log(s->avctx, AV_LOG_DEBUG,
994 "Parsed SPS: id %d; coded wxh: %dx%d; "
995 "cropped wxh: %dx%d; pix_fmt: %s.\n",
996 sps_id, sps->width, sps->height,
997 sps->output_width, sps->output_height,
998 av_get_pix_fmt_name(sps->pix_fmt));
1001 /* check if this is a repeat of an already parsed SPS, then keep the
1003 * otherwise drop all PPSes that depend on it */
1004 if (s->sps_list[sps_id] &&
1005 !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1006 av_buffer_unref(&sps_buf);
1008 remove_sps(s, sps_id);
1009 s->sps_list[sps_id] = sps_buf;
1015 static void hevc_pps_free(void *opaque, uint8_t *data)
1017 HEVCPPS *pps = (HEVCPPS*)data;
1019 av_freep(&pps->column_width);
1020 av_freep(&pps->row_height);
1021 av_freep(&pps->col_bd);
1022 av_freep(&pps->row_bd);
1023 av_freep(&pps->col_idxX);
1024 av_freep(&pps->ctb_addr_rs_to_ts);
1025 av_freep(&pps->ctb_addr_ts_to_rs);
1026 av_freep(&pps->tile_pos_rs);
1027 av_freep(&pps->tile_id);
1028 av_freep(&pps->min_tb_addr_zs);
1033 int ff_hevc_decode_nal_pps(HEVCContext *s)
1035 GetBitContext *gb = &s->HEVClc.gb;
1036 HEVCSPS *sps = NULL;
1037 int pic_area_in_ctbs, pic_area_in_min_tbs;
1038 int log2_diff_ctb_min_tb_size;
1039 int i, j, x, y, ctb_addr_rs, tile_id;
1041 unsigned int pps_id = 0;
1043 AVBufferRef *pps_buf;
1044 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1047 return AVERROR(ENOMEM);
1049 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1050 hevc_pps_free, NULL, 0);
1053 return AVERROR(ENOMEM);
1056 av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1059 pps->loop_filter_across_tiles_enabled_flag = 1;
1060 pps->num_tile_columns = 1;
1061 pps->num_tile_rows = 1;
1062 pps->uniform_spacing_flag = 1;
1063 pps->disable_dbf = 0;
1064 pps->beta_offset = 0;
1068 pps_id = get_ue_golomb_long(gb);
1069 if (pps_id >= MAX_PPS_COUNT) {
1070 av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1071 ret = AVERROR_INVALIDDATA;
1074 pps->sps_id = get_ue_golomb_long(gb);
1075 if (pps->sps_id >= MAX_SPS_COUNT) {
1076 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1077 ret = AVERROR_INVALIDDATA;
1080 if (!s->sps_list[pps->sps_id]) {
1081 av_log(s->avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1082 ret = AVERROR_INVALIDDATA;
1085 sps = (HEVCSPS *)s->sps_list[pps->sps_id]->data;
1087 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1088 pps->output_flag_present_flag = get_bits1(gb);
1089 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1091 pps->sign_data_hiding_flag = get_bits1(gb);
1093 pps->cabac_init_present_flag = get_bits1(gb);
1095 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1096 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1098 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1100 pps->constrained_intra_pred_flag = get_bits1(gb);
1101 pps->transform_skip_enabled_flag = get_bits1(gb);
1103 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1104 pps->diff_cu_qp_delta_depth = 0;
1105 if (pps->cu_qp_delta_enabled_flag)
1106 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1108 pps->cb_qp_offset = get_se_golomb(gb);
1109 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1110 av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1112 ret = AVERROR_INVALIDDATA;
1115 pps->cr_qp_offset = get_se_golomb(gb);
1116 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1117 av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1119 ret = AVERROR_INVALIDDATA;
1122 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1124 pps->weighted_pred_flag = get_bits1(gb);
1125 pps->weighted_bipred_flag = get_bits1(gb);
1127 pps->transquant_bypass_enable_flag = get_bits1(gb);
1128 pps->tiles_enabled_flag = get_bits1(gb);
1129 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1131 if (pps->tiles_enabled_flag) {
1132 pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1133 pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1134 if (pps->num_tile_columns == 0 ||
1135 pps->num_tile_columns >= sps->width) {
1136 av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1137 pps->num_tile_columns - 1);
1138 ret = AVERROR_INVALIDDATA;
1141 if (pps->num_tile_rows == 0 ||
1142 pps->num_tile_rows >= sps->height) {
1143 av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1144 pps->num_tile_rows - 1);
1145 ret = AVERROR_INVALIDDATA;
1149 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1150 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1151 if (!pps->column_width || !pps->row_height) {
1152 ret = AVERROR(ENOMEM);
1156 pps->uniform_spacing_flag = get_bits1(gb);
1157 if (!pps->uniform_spacing_flag) {
1159 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1160 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1161 sum += pps->column_width[i];
1163 if (sum >= sps->ctb_width) {
1164 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1165 ret = AVERROR_INVALIDDATA;
1168 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1171 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1172 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1173 sum += pps->row_height[i];
1175 if (sum >= sps->ctb_height) {
1176 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1177 ret = AVERROR_INVALIDDATA;
1180 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1182 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1185 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1187 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1188 if (pps->deblocking_filter_control_present_flag) {
1189 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1190 pps->disable_dbf = get_bits1(gb);
1191 if (!pps->disable_dbf) {
1192 pps->beta_offset = get_se_golomb(gb) * 2;
1193 pps->tc_offset = get_se_golomb(gb) * 2;
1194 if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1195 av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1196 pps->beta_offset/2);
1197 ret = AVERROR_INVALIDDATA;
1200 if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1201 av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1203 ret = AVERROR_INVALIDDATA;
1209 pps->scaling_list_data_present_flag = get_bits1(gb);
1210 if (pps->scaling_list_data_present_flag) {
1211 set_default_scaling_list_data(&pps->scaling_list);
1212 ret = scaling_list_data(gb, s->avctx, &pps->scaling_list);
1216 pps->lists_modification_present_flag = get_bits1(gb);
1217 pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1218 if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1219 av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1220 pps->log2_parallel_merge_level - 2);
1221 ret = AVERROR_INVALIDDATA;
1225 pps->slice_header_extension_present_flag = get_bits1(gb);
1226 skip_bits1(gb); // pps_extension_flag
1228 // Inferred parameters
1229 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1230 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1231 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1232 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
1233 ret = AVERROR(ENOMEM);
1237 if (pps->uniform_spacing_flag) {
1238 if (!pps->column_width) {
1239 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1240 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1242 if (!pps->column_width || !pps->row_height) {
1243 ret = AVERROR(ENOMEM);
1247 for (i = 0; i < pps->num_tile_columns; i++) {
1248 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1249 (i * sps->ctb_width) / pps->num_tile_columns;
1252 for (i = 0; i < pps->num_tile_rows; i++) {
1253 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1254 (i * sps->ctb_height) / pps->num_tile_rows;
1259 for (i = 0; i < pps->num_tile_columns; i++)
1260 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1263 for (i = 0; i < pps->num_tile_rows; i++)
1264 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1266 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1267 if (i > pps->col_bd[j])
1269 pps->col_idxX[i] = j;
1275 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1276 pic_area_in_min_tbs = sps->min_tb_width * sps->min_tb_height;
1278 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1279 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1280 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1281 pps->min_tb_addr_zs = av_malloc_array(pic_area_in_min_tbs, sizeof(*pps->min_tb_addr_zs));
1282 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1283 !pps->tile_id || !pps->min_tb_addr_zs) {
1284 ret = AVERROR(ENOMEM);
1288 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1289 int tb_x = ctb_addr_rs % sps->ctb_width;
1290 int tb_y = ctb_addr_rs / sps->ctb_width;
1295 for (i = 0; i < pps->num_tile_columns; i++) {
1296 if (tb_x < pps->col_bd[i + 1]) {
1302 for (i = 0; i < pps->num_tile_rows; i++) {
1303 if (tb_y < pps->row_bd[i + 1]) {
1309 for (i = 0; i < tile_x; i++)
1310 val += pps->row_height[tile_y] * pps->column_width[i];
1311 for (i = 0; i < tile_y; i++)
1312 val += sps->ctb_width * pps->row_height[i];
1314 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1315 tb_x - pps->col_bd[tile_x];
1317 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1318 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1321 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1322 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1323 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1324 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1325 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1327 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1328 if (!pps->tile_pos_rs) {
1329 ret = AVERROR(ENOMEM);
1333 for (j = 0; j < pps->num_tile_rows; j++)
1334 for (i = 0; i < pps->num_tile_columns; i++)
1335 pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1337 log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
1338 for (y = 0; y < sps->min_tb_height; y++) {
1339 for (x = 0; x < sps->min_tb_width; x++) {
1340 int tb_x = x >> log2_diff_ctb_min_tb_size;
1341 int tb_y = y >> log2_diff_ctb_min_tb_size;
1342 int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1343 int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1344 (log2_diff_ctb_min_tb_size * 2);
1345 for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
1347 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1349 pps->min_tb_addr_zs[y * sps->min_tb_width + x] = val;
1353 remove_pps(s, pps_id);
1354 s->pps_list[pps_id] = pps_buf;
1359 av_buffer_unref(&pps_buf);