summaryrefslogtreecommitdiff
path: root/libavcodec/hevc_ps.c (plain)
blob: acd55cc513cf5ee77404a5e1bd5692b7822afe60
1/*
2 * HEVC Parameter Set decoding
3 *
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
8 *
9 * This file is part of FFmpeg.
10 *
11 * FFmpeg is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU Lesser General Public
13 * License as published by the Free Software Foundation; either
14 * version 2.1 of the License, or (at your option) any later version.
15 *
16 * FFmpeg is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * Lesser General Public License for more details.
20 *
21 * You should have received a copy of the GNU Lesser General Public
22 * License along with FFmpeg; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 */
25
26#include "libavutil/imgutils.h"
27#include "golomb.h"
28#include "hevc_data.h"
29#include "hevc_ps.h"
30
31static const uint8_t default_scaling_list_intra[] = {
32 16, 16, 16, 16, 17, 18, 21, 24,
33 16, 16, 16, 16, 17, 19, 22, 25,
34 16, 16, 17, 18, 20, 22, 25, 29,
35 16, 16, 18, 21, 24, 27, 31, 36,
36 17, 17, 20, 24, 30, 35, 41, 47,
37 18, 19, 22, 27, 35, 44, 54, 65,
38 21, 22, 25, 31, 41, 54, 70, 88,
39 24, 25, 29, 36, 47, 65, 88, 115
40};
41
42static const uint8_t default_scaling_list_inter[] = {
43 16, 16, 16, 16, 17, 18, 20, 24,
44 16, 16, 16, 17, 18, 20, 24, 25,
45 16, 16, 17, 18, 20, 24, 25, 28,
46 16, 17, 18, 20, 24, 25, 28, 33,
47 17, 18, 20, 24, 25, 28, 33, 41,
48 18, 20, 24, 25, 28, 33, 41, 54,
49 20, 24, 25, 28, 33, 41, 54, 71,
50 24, 25, 28, 33, 41, 54, 71, 91
51};
52
53static const AVRational vui_sar[] = {
54 { 0, 1 },
55 { 1, 1 },
56 { 12, 11 },
57 { 10, 11 },
58 { 16, 11 },
59 { 40, 33 },
60 { 24, 11 },
61 { 20, 11 },
62 { 32, 11 },
63 { 80, 33 },
64 { 18, 11 },
65 { 15, 11 },
66 { 64, 33 },
67 { 160, 99 },
68 { 4, 3 },
69 { 3, 2 },
70 { 2, 1 },
71};
72
73static void remove_pps(HEVCParamSets *s, int id)
74{
75 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)
76 s->pps = NULL;
77 av_buffer_unref(&s->pps_list[id]);
78}
79
80static void remove_sps(HEVCParamSets *s, int id)
81{
82 int i;
83 if (s->sps_list[id]) {
84 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)
85 s->sps = NULL;
86
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)
90 remove_pps(s, i);
91
92 av_assert0(!(s->sps_list[id] && s->sps == (HEVCSPS*)s->sps_list[id]->data));
93 }
94 av_buffer_unref(&s->sps_list[id]);
95}
96
97static void remove_vps(HEVCParamSets *s, int id)
98{
99 int i;
100 if (s->vps_list[id]) {
101 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)
102 s->vps = NULL;
103
104 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
105 if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id)
106 remove_sps(s, i);
107 }
108 av_buffer_unref(&s->vps_list[id]);
109}
110
111int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
112 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
113{
114 uint8_t rps_predict = 0;
115 int delta_poc;
116 int k0 = 0;
117 int k1 = 0;
118 int k = 0;
119 int i;
120
121 if (rps != sps->st_rps && sps->nb_st_rps)
122 rps_predict = get_bits1(gb);
123
124 if (rps_predict) {
125 const ShortTermRPS *rps_ridx;
126 int delta_rps;
127 unsigned abs_delta_rps;
128 uint8_t use_delta_flag = 0;
129 uint8_t delta_rps_sign;
130
131 if (is_slice_header) {
132 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
133 if (delta_idx > sps->nb_st_rps) {
134 av_log(avctx, AV_LOG_ERROR,
135 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
136 delta_idx, sps->nb_st_rps);
137 return AVERROR_INVALIDDATA;
138 }
139 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
140 rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs;
141 } else
142 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
143
144 delta_rps_sign = get_bits1(gb);
145 abs_delta_rps = get_ue_golomb_long(gb) + 1;
146 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
147 av_log(avctx, AV_LOG_ERROR,
148 "Invalid value of abs_delta_rps: %d\n",
149 abs_delta_rps);
150 return AVERROR_INVALIDDATA;
151 }
152 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
153 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
154 int used = rps->used[k] = get_bits1(gb);
155
156 if (!used)
157 use_delta_flag = get_bits1(gb);
158
159 if (used || use_delta_flag) {
160 if (i < rps_ridx->num_delta_pocs)
161 delta_poc = delta_rps + rps_ridx->delta_poc[i];
162 else
163 delta_poc = delta_rps;
164 rps->delta_poc[k] = delta_poc;
165 if (delta_poc < 0)
166 k0++;
167 else
168 k1++;
169 k++;
170 }
171 }
172
173 rps->num_delta_pocs = k;
174 rps->num_negative_pics = k0;
175 // sort in increasing order (smallest first)
176 if (rps->num_delta_pocs != 0) {
177 int used, tmp;
178 for (i = 1; i < rps->num_delta_pocs; i++) {
179 delta_poc = rps->delta_poc[i];
180 used = rps->used[i];
181 for (k = i - 1; k >= 0; k--) {
182 tmp = rps->delta_poc[k];
183 if (delta_poc < tmp) {
184 rps->delta_poc[k + 1] = tmp;
185 rps->used[k + 1] = rps->used[k];
186 rps->delta_poc[k] = delta_poc;
187 rps->used[k] = used;
188 }
189 }
190 }
191 }
192 if ((rps->num_negative_pics >> 1) != 0) {
193 int used;
194 k = rps->num_negative_pics - 1;
195 // flip the negative values to largest first
196 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
197 delta_poc = rps->delta_poc[i];
198 used = rps->used[i];
199 rps->delta_poc[i] = rps->delta_poc[k];
200 rps->used[i] = rps->used[k];
201 rps->delta_poc[k] = delta_poc;
202 rps->used[k] = used;
203 k--;
204 }
205 }
206 } else {
207 unsigned int prev, nb_positive_pics;
208 rps->num_negative_pics = get_ue_golomb_long(gb);
209 nb_positive_pics = get_ue_golomb_long(gb);
210
211 if (rps->num_negative_pics >= HEVC_MAX_REFS ||
212 nb_positive_pics >= HEVC_MAX_REFS) {
213 av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
214 return AVERROR_INVALIDDATA;
215 }
216
217 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
218 if (rps->num_delta_pocs) {
219 prev = 0;
220 for (i = 0; i < rps->num_negative_pics; i++) {
221 delta_poc = get_ue_golomb_long(gb) + 1;
222 prev -= delta_poc;
223 rps->delta_poc[i] = prev;
224 rps->used[i] = get_bits1(gb);
225 }
226 prev = 0;
227 for (i = 0; i < nb_positive_pics; i++) {
228 delta_poc = get_ue_golomb_long(gb) + 1;
229 prev += delta_poc;
230 rps->delta_poc[rps->num_negative_pics + i] = prev;
231 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
232 }
233 }
234 }
235 return 0;
236}
237
238
239static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,
240 PTLCommon *ptl)
241{
242 int i;
243
244 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12)
245 return -1;
246
247 ptl->profile_space = get_bits(gb, 2);
248 ptl->tier_flag = get_bits1(gb);
249 ptl->profile_idc = get_bits(gb, 5);
250 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
251 av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
252 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
253 av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
254 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
255 av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
256 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
257 av_log(avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
258 else
259 av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
260
261 for (i = 0; i < 32; i++) {
262 ptl->profile_compatibility_flag[i] = get_bits1(gb);
263
264 if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i])
265 ptl->profile_idc = i;
266 }
267 ptl->progressive_source_flag = get_bits1(gb);
268 ptl->interlaced_source_flag = get_bits1(gb);
269 ptl->non_packed_constraint_flag = get_bits1(gb);
270 ptl->frame_only_constraint_flag = get_bits1(gb);
271
272 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
273 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
274 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
275
276 return 0;
277}
278
279static int parse_ptl(GetBitContext *gb, AVCodecContext *avctx,
280 PTL *ptl, int max_num_sub_layers)
281{
282 int i;
283 if (decode_profile_tier_level(gb, avctx, &ptl->general_ptl) < 0 ||
284 get_bits_left(gb) < 8 + (8*2 * (max_num_sub_layers - 1 > 0))) {
285 av_log(avctx, AV_LOG_ERROR, "PTL information too short\n");
286 return -1;
287 }
288
289 ptl->general_ptl.level_idc = get_bits(gb, 8);
290
291 for (i = 0; i < max_num_sub_layers - 1; i++) {
292 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
293 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
294 }
295
296 if (max_num_sub_layers - 1> 0)
297 for (i = max_num_sub_layers - 1; i < 8; i++)
298 skip_bits(gb, 2); // reserved_zero_2bits[i]
299 for (i = 0; i < max_num_sub_layers - 1; i++) {
300 if (ptl->sub_layer_profile_present_flag[i] &&
301 decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]) < 0) {
302 av_log(avctx, AV_LOG_ERROR,
303 "PTL information for sublayer %i too short\n", i);
304 return -1;
305 }
306 if (ptl->sub_layer_level_present_flag[i]) {
307 if (get_bits_left(gb) < 8) {
308 av_log(avctx, AV_LOG_ERROR,
309 "Not enough data for sublayer %i level_idc\n", i);
310 return -1;
311 } else
312 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
313 }
314 }
315
316 return 0;
317}
318
319static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,
320 int subpic_params_present)
321{
322 int i;
323
324 for (i = 0; i < nb_cpb; i++) {
325 get_ue_golomb_long(gb); // bit_rate_value_minus1
326 get_ue_golomb_long(gb); // cpb_size_value_minus1
327
328 if (subpic_params_present) {
329 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
330 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
331 }
332 skip_bits1(gb); // cbr_flag
333 }
334}
335
336static int decode_hrd(GetBitContext *gb, int common_inf_present,
337 int max_sublayers)
338{
339 int nal_params_present = 0, vcl_params_present = 0;
340 int subpic_params_present = 0;
341 int i;
342
343 if (common_inf_present) {
344 nal_params_present = get_bits1(gb);
345 vcl_params_present = get_bits1(gb);
346
347 if (nal_params_present || vcl_params_present) {
348 subpic_params_present = get_bits1(gb);
349
350 if (subpic_params_present) {
351 skip_bits(gb, 8); // tick_divisor_minus2
352 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
353 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
354 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
355 }
356
357 skip_bits(gb, 4); // bit_rate_scale
358 skip_bits(gb, 4); // cpb_size_scale
359
360 if (subpic_params_present)
361 skip_bits(gb, 4); // cpb_size_du_scale
362
363 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
364 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
365 skip_bits(gb, 5); // dpb_output_delay_length_minus1
366 }
367 }
368
369 for (i = 0; i < max_sublayers; i++) {
370 int low_delay = 0;
371 unsigned int nb_cpb = 1;
372 int fixed_rate = get_bits1(gb);
373
374 if (!fixed_rate)
375 fixed_rate = get_bits1(gb);
376
377 if (fixed_rate)
378 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
379 else
380 low_delay = get_bits1(gb);
381
382 if (!low_delay) {
383 nb_cpb = get_ue_golomb_long(gb) + 1;
384 if (nb_cpb < 1 || nb_cpb > 32) {
385 av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
386 return AVERROR_INVALIDDATA;
387 }
388 }
389
390 if (nal_params_present)
391 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
392 if (vcl_params_present)
393 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
394 }
395 return 0;
396}
397
398int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
399 HEVCParamSets *ps)
400{
401 int i,j;
402 int vps_id = 0;
403 ptrdiff_t nal_size;
404 HEVCVPS *vps;
405 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
406
407 if (!vps_buf)
408 return AVERROR(ENOMEM);
409 vps = (HEVCVPS*)vps_buf->data;
410
411 av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n");
412
413 nal_size = gb->buffer_end - gb->buffer;
414 if (nal_size > sizeof(vps->data)) {
415 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized VPS "
416 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
417 nal_size, sizeof(vps->data));
418 vps->data_size = sizeof(vps->data);
419 } else {
420 vps->data_size = nal_size;
421 }
422 memcpy(vps->data, gb->buffer, vps->data_size);
423
424 vps_id = get_bits(gb, 4);
425 if (vps_id >= HEVC_MAX_VPS_COUNT) {
426 av_log(avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
427 goto err;
428 }
429
430 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
431 av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
432 goto err;
433 }
434
435 vps->vps_max_layers = get_bits(gb, 6) + 1;
436 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
437 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
438
439 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
440 av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
441 goto err;
442 }
443
444 if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) {
445 av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
446 vps->vps_max_sub_layers);
447 goto err;
448 }
449
450 if (parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers) < 0)
451 goto err;
452
453 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
454
455 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
456 for (; i < vps->vps_max_sub_layers; i++) {
457 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
458 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
459 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
460
461 if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
462 av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
463 vps->vps_max_dec_pic_buffering[i] - 1);
464 goto err;
465 }
466 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
467 av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
468 vps->vps_num_reorder_pics[i]);
469 if (avctx->err_recognition & AV_EF_EXPLODE)
470 goto err;
471 }
472 }
473
474 vps->vps_max_layer_id = get_bits(gb, 6);
475 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
476 if (vps->vps_num_layer_sets < 1 || vps->vps_num_layer_sets > 1024 ||
477 (vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
478 av_log(avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
479 goto err;
480 }
481
482 for (i = 1; i < vps->vps_num_layer_sets; i++)
483 for (j = 0; j <= vps->vps_max_layer_id; j++)
484 skip_bits(gb, 1); // layer_id_included_flag[i][j]
485
486 vps->vps_timing_info_present_flag = get_bits1(gb);
487 if (vps->vps_timing_info_present_flag) {
488 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
489 vps->vps_time_scale = get_bits_long(gb, 32);
490 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
491 if (vps->vps_poc_proportional_to_timing_flag)
492 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
493 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
494 if (vps->vps_num_hrd_parameters > (unsigned)vps->vps_num_layer_sets) {
495 av_log(avctx, AV_LOG_ERROR,
496 "vps_num_hrd_parameters %d is invalid\n", vps->vps_num_hrd_parameters);
497 goto err;
498 }
499 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
500 int common_inf_present = 1;
501
502 get_ue_golomb_long(gb); // hrd_layer_set_idx
503 if (i)
504 common_inf_present = get_bits1(gb);
505 decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers);
506 }
507 }
508 get_bits1(gb); /* vps_extension_flag */
509
510 if (get_bits_left(gb) < 0) {
511 av_log(avctx, AV_LOG_ERROR,
512 "Overread VPS by %d bits\n", -get_bits_left(gb));
513 if (ps->vps_list[vps_id])
514 goto err;
515 }
516
517 if (ps->vps_list[vps_id] &&
518 !memcmp(ps->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {
519 av_buffer_unref(&vps_buf);
520 } else {
521 remove_vps(ps, vps_id);
522 ps->vps_list[vps_id] = vps_buf;
523 }
524
525 return 0;
526
527err:
528 av_buffer_unref(&vps_buf);
529 return AVERROR_INVALIDDATA;
530}
531
532static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,
533 int apply_defdispwin, HEVCSPS *sps)
534{
535 VUI *vui = &sps->vui;
536 GetBitContext backup;
537 int sar_present, alt = 0;
538
539 av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n");
540
541 sar_present = get_bits1(gb);
542 if (sar_present) {
543 uint8_t sar_idx = get_bits(gb, 8);
544 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
545 vui->sar = vui_sar[sar_idx];
546 else if (sar_idx == 255) {
547 vui->sar.num = get_bits(gb, 16);
548 vui->sar.den = get_bits(gb, 16);
549 } else
550 av_log(avctx, AV_LOG_WARNING,
551 "Unknown SAR index: %u.\n", sar_idx);
552 }
553
554 vui->overscan_info_present_flag = get_bits1(gb);
555 if (vui->overscan_info_present_flag)
556 vui->overscan_appropriate_flag = get_bits1(gb);
557
558 vui->video_signal_type_present_flag = get_bits1(gb);
559 if (vui->video_signal_type_present_flag) {
560 vui->video_format = get_bits(gb, 3);
561 vui->video_full_range_flag = get_bits1(gb);
562 vui->colour_description_present_flag = get_bits1(gb);
563 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
564 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
565 if (vui->colour_description_present_flag) {
566 vui->colour_primaries = get_bits(gb, 8);
567 vui->transfer_characteristic = get_bits(gb, 8);
568 vui->matrix_coeffs = get_bits(gb, 8);
569
570 // Set invalid values to "unspecified"
571 if (vui->colour_primaries >= AVCOL_PRI_NB)
572 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
573 if (vui->transfer_characteristic >= AVCOL_TRC_NB)
574 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
575 if (vui->matrix_coeffs >= AVCOL_SPC_NB)
576 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
577 if (vui->matrix_coeffs == AVCOL_SPC_RGB) {
578 switch (sps->pix_fmt) {
579 case AV_PIX_FMT_YUV444P:
580 sps->pix_fmt = AV_PIX_FMT_GBRP;
581 break;
582 case AV_PIX_FMT_YUV444P10:
583 sps->pix_fmt = AV_PIX_FMT_GBRP10;
584 break;
585 case AV_PIX_FMT_YUV444P12:
586 sps->pix_fmt = AV_PIX_FMT_GBRP12;
587 break;
588 }
589 }
590 }
591 }
592
593 vui->chroma_loc_info_present_flag = get_bits1(gb);
594 if (vui->chroma_loc_info_present_flag) {
595 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
596 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
597 }
598
599 vui->neutra_chroma_indication_flag = get_bits1(gb);
600 vui->field_seq_flag = get_bits1(gb);
601 vui->frame_field_info_present_flag = get_bits1(gb);
602
603 if (get_bits_left(gb) >= 68 && show_bits_long(gb, 21) == 0x100000) {
604 vui->default_display_window_flag = 0;
605 av_log(avctx, AV_LOG_WARNING, "Invalid default display window\n");
606 } else
607 vui->default_display_window_flag = get_bits1(gb);
608 // Backup context in case an alternate header is detected
609 memcpy(&backup, gb, sizeof(backup));
610
611 if (vui->default_display_window_flag) {
612 int vert_mult = 1 + (sps->chroma_format_idc < 2);
613 int horiz_mult = 1 + (sps->chroma_format_idc < 3);
614 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
615 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
616 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
617 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
618
619 if (apply_defdispwin &&
620 avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
621 av_log(avctx, AV_LOG_DEBUG,
622 "discarding vui default display window, "
623 "original values are l:%u r:%u t:%u b:%u\n",
624 vui->def_disp_win.left_offset,
625 vui->def_disp_win.right_offset,
626 vui->def_disp_win.top_offset,
627 vui->def_disp_win.bottom_offset);
628
629 vui->def_disp_win.left_offset =
630 vui->def_disp_win.right_offset =
631 vui->def_disp_win.top_offset =
632 vui->def_disp_win.bottom_offset = 0;
633 }
634 }
635
636 vui->vui_timing_info_present_flag = get_bits1(gb);
637
638 if (vui->vui_timing_info_present_flag) {
639 if( get_bits_left(gb) < 66) {
640 // The alternate syntax seem to have timing info located
641 // at where def_disp_win is normally located
642 av_log(avctx, AV_LOG_WARNING,
643 "Strange VUI timing information, retrying...\n");
644 vui->default_display_window_flag = 0;
645 memset(&vui->def_disp_win, 0, sizeof(vui->def_disp_win));
646 memcpy(gb, &backup, sizeof(backup));
647 alt = 1;
648 }
649 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
650 vui->vui_time_scale = get_bits_long(gb, 32);
651 if (alt) {
652 av_log(avctx, AV_LOG_INFO, "Retry got %"PRIu32"/%"PRIu32" fps\n",
653 vui->vui_time_scale, vui->vui_num_units_in_tick);
654 }
655 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
656 if (vui->vui_poc_proportional_to_timing_flag)
657 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
658 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
659 if (vui->vui_hrd_parameters_present_flag)
660 decode_hrd(gb, 1, sps->max_sub_layers);
661 }
662
663 vui->bitstream_restriction_flag = get_bits1(gb);
664 if (vui->bitstream_restriction_flag) {
665 vui->tiles_fixed_structure_flag = get_bits1(gb);
666 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
667 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
668 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
669 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
670 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
671 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
672 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
673 }
674}
675
676static void set_default_scaling_list_data(ScalingList *sl)
677{
678 int matrixId;
679
680 for (matrixId = 0; matrixId < 6; matrixId++) {
681 // 4x4 default is 16
682 memset(sl->sl[0][matrixId], 16, 16);
683 sl->sl_dc[0][matrixId] = 16; // default for 16x16
684 sl->sl_dc[1][matrixId] = 16; // default for 32x32
685 }
686 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
687 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
688 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
689 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
690 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
691 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
692 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
693 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
694 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
695 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
696 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
697 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
698 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
699 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
700 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
701 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
702 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
703 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
704}
705
706static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl, HEVCSPS *sps)
707{
708 uint8_t scaling_list_pred_mode_flag;
709 int32_t scaling_list_dc_coef[2][6];
710 int size_id, matrix_id, pos;
711 int i;
712
713 for (size_id = 0; size_id < 4; size_id++)
714 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
715 scaling_list_pred_mode_flag = get_bits1(gb);
716 if (!scaling_list_pred_mode_flag) {
717 unsigned int delta = get_ue_golomb_long(gb);
718 /* Only need to handle non-zero delta. Zero means default,
719 * which should already be in the arrays. */
720 if (delta) {
721 // Copy from previous array.
722 if (matrix_id < delta) {
723 av_log(avctx, AV_LOG_ERROR,
724 "Invalid delta in scaling list data: %d.\n", delta);
725 return AVERROR_INVALIDDATA;
726 }
727
728 memcpy(sl->sl[size_id][matrix_id],
729 sl->sl[size_id][matrix_id - delta],
730 size_id > 0 ? 64 : 16);
731 if (size_id > 1)
732 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
733 }
734 } else {
735 int next_coef, coef_num;
736 int32_t scaling_list_delta_coef;
737
738 next_coef = 8;
739 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
740 if (size_id > 1) {
741 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
742 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
743 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
744 }
745 for (i = 0; i < coef_num; i++) {
746 if (size_id == 0)
747 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
748 ff_hevc_diag_scan4x4_x[i];
749 else
750 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
751 ff_hevc_diag_scan8x8_x[i];
752
753 scaling_list_delta_coef = get_se_golomb(gb);
754 next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
755 sl->sl[size_id][matrix_id][pos] = next_coef;
756 }
757 }
758 }
759
760 if (sps->chroma_format_idc == 3) {
761 for (i = 0; i < 64; i++) {
762 sl->sl[3][1][i] = sl->sl[2][1][i];
763 sl->sl[3][2][i] = sl->sl[2][2][i];
764 sl->sl[3][4][i] = sl->sl[2][4][i];
765 sl->sl[3][5][i] = sl->sl[2][5][i];
766 }
767 sl->sl_dc[1][1] = sl->sl_dc[0][1];
768 sl->sl_dc[1][2] = sl->sl_dc[0][2];
769 sl->sl_dc[1][4] = sl->sl_dc[0][4];
770 sl->sl_dc[1][5] = sl->sl_dc[0][5];
771 }
772
773
774 return 0;
775}
776
777static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps)
778{
779 const AVPixFmtDescriptor *desc;
780 switch (sps->bit_depth) {
781 case 8:
782 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
783 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
784 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
785 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
786 break;
787 case 9:
788 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY16;
789 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
790 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
791 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
792 break;
793 case 10:
794 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10;
795 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
796 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
797 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
798 break;
799 case 12:
800 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12;
801 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
802 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
803 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
804 break;
805 default:
806 av_log(avctx, AV_LOG_ERROR,
807 "The following bit-depths are currently specified: 8, 9, 10 and 12 bits, "
808 "chroma_format_idc is %d, depth is %d\n",
809 sps->chroma_format_idc, sps->bit_depth);
810 return AVERROR_INVALIDDATA;
811 }
812
813 desc = av_pix_fmt_desc_get(sps->pix_fmt);
814 if (!desc)
815 return AVERROR(EINVAL);
816
817 sps->hshift[0] = sps->vshift[0] = 0;
818 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
819 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
820
821 sps->pixel_shift = sps->bit_depth > 8;
822
823 return 0;
824}
825
826int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
827 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)
828{
829 int ret = 0;
830 int log2_diff_max_min_transform_block_size;
831 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
832 int i;
833
834 // Coded parameters
835
836 sps->vps_id = get_bits(gb, 4);
837 if (sps->vps_id >= HEVC_MAX_VPS_COUNT) {
838 av_log(avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
839 return AVERROR_INVALIDDATA;
840 }
841
842 if (vps_list && !vps_list[sps->vps_id]) {
843 av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
844 sps->vps_id);
845 return AVERROR_INVALIDDATA;
846 }
847
848 sps->max_sub_layers = get_bits(gb, 3) + 1;
849 if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) {
850 av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
851 sps->max_sub_layers);
852 return AVERROR_INVALIDDATA;
853 }
854
855 skip_bits1(gb); // temporal_id_nesting_flag
856
857 if ((ret = parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers)) < 0)
858 return ret;
859
860 *sps_id = get_ue_golomb_long(gb);
861 if (*sps_id >= HEVC_MAX_SPS_COUNT) {
862 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);
863 return AVERROR_INVALIDDATA;
864 }
865
866 sps->chroma_format_idc = get_ue_golomb_long(gb);
867 if (sps->chroma_format_idc > 3U) {
868 av_log(avctx, AV_LOG_ERROR, "chroma_format_idc %d is invalid\n", sps->chroma_format_idc);
869 return AVERROR_INVALIDDATA;
870 }
871
872 if (sps->chroma_format_idc == 3)
873 sps->separate_colour_plane_flag = get_bits1(gb);
874
875 if (sps->separate_colour_plane_flag)
876 sps->chroma_format_idc = 0;
877
878 sps->width = get_ue_golomb_long(gb);
879 sps->height = get_ue_golomb_long(gb);
880 if ((ret = av_image_check_size(sps->width,
881 sps->height, 0, avctx)) < 0)
882 return ret;
883
884 if (get_bits1(gb)) { // pic_conformance_flag
885 int vert_mult = 1 + (sps->chroma_format_idc < 2);
886 int horiz_mult = 1 + (sps->chroma_format_idc < 3);
887 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
888 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
889 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
890 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
891
892 if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
893 av_log(avctx, AV_LOG_DEBUG,
894 "discarding sps conformance window, "
895 "original values are l:%u r:%u t:%u b:%u\n",
896 sps->pic_conf_win.left_offset,
897 sps->pic_conf_win.right_offset,
898 sps->pic_conf_win.top_offset,
899 sps->pic_conf_win.bottom_offset);
900
901 sps->pic_conf_win.left_offset =
902 sps->pic_conf_win.right_offset =
903 sps->pic_conf_win.top_offset =
904 sps->pic_conf_win.bottom_offset = 0;
905 }
906 sps->output_window = sps->pic_conf_win;
907 }
908
909 sps->bit_depth = get_ue_golomb_long(gb) + 8;
910 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
911 if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) {
912 av_log(avctx, AV_LOG_ERROR,
913 "Luma bit depth (%d) is different from chroma bit depth (%d), "
914 "this is unsupported.\n",
915 sps->bit_depth, bit_depth_chroma);
916 return AVERROR_INVALIDDATA;
917 }
918
919 ret = map_pixel_format(avctx, sps);
920 if (ret < 0)
921 return ret;
922
923 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
924 if (sps->log2_max_poc_lsb > 16) {
925 av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
926 sps->log2_max_poc_lsb - 4);
927 return AVERROR_INVALIDDATA;
928 }
929
930 sublayer_ordering_info = get_bits1(gb);
931 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
932 for (i = start; i < sps->max_sub_layers; i++) {
933 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
934 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
935 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
936 if (sps->temporal_layer[i].max_dec_pic_buffering > HEVC_MAX_DPB_SIZE) {
937 av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
938 sps->temporal_layer[i].max_dec_pic_buffering - 1);
939 return AVERROR_INVALIDDATA;
940 }
941 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
942 av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
943 sps->temporal_layer[i].num_reorder_pics);
944 if (avctx->err_recognition & AV_EF_EXPLODE ||
945 sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {
946 return AVERROR_INVALIDDATA;
947 }
948 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
949 }
950 }
951
952 if (!sublayer_ordering_info) {
953 for (i = 0; i < start; i++) {
954 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
955 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
956 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
957 }
958 }
959
960 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
961 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
962 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
963 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
964 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
965 sps->log2_min_tb_size;
966
967 if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) {
968 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size);
969 return AVERROR_INVALIDDATA;
970 }
971
972 if (sps->log2_diff_max_min_coding_block_size > 30) {
973 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_coding_block_size", sps->log2_diff_max_min_coding_block_size);
974 return AVERROR_INVALIDDATA;
975 }
976
977 if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) {
978 av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
979 return AVERROR_INVALIDDATA;
980 }
981
982 if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) {
983 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size);
984 return AVERROR_INVALIDDATA;
985 }
986
987 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
988 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
989
990 sps->scaling_list_enable_flag = get_bits1(gb);
991 if (sps->scaling_list_enable_flag) {
992 set_default_scaling_list_data(&sps->scaling_list);
993
994 if (get_bits1(gb)) {
995 ret = scaling_list_data(gb, avctx, &sps->scaling_list, sps);
996 if (ret < 0)
997 return ret;
998 }
999 }
1000
1001 sps->amp_enabled_flag = get_bits1(gb);
1002 sps->sao_enabled = get_bits1(gb);
1003
1004 sps->pcm_enabled_flag = get_bits1(gb);
1005 if (sps->pcm_enabled_flag) {
1006 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
1007 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
1008 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
1009 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
1010 get_ue_golomb_long(gb);
1011 if (sps->pcm.bit_depth > sps->bit_depth) {
1012 av_log(avctx, AV_LOG_ERROR,
1013 "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
1014 sps->pcm.bit_depth, sps->bit_depth);
1015 return AVERROR_INVALIDDATA;
1016 }
1017
1018 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
1019 }
1020
1021 sps->nb_st_rps = get_ue_golomb_long(gb);
1022 if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_RPS_COUNT) {
1023 av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
1024 sps->nb_st_rps);
1025 return AVERROR_INVALIDDATA;
1026 }
1027 for (i = 0; i < sps->nb_st_rps; i++) {
1028 if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],
1029 sps, 0)) < 0)
1030 return ret;
1031 }
1032
1033 sps->long_term_ref_pics_present_flag = get_bits1(gb);
1034 if (sps->long_term_ref_pics_present_flag) {
1035 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
1036 if (sps->num_long_term_ref_pics_sps > 31U) {
1037 av_log(avctx, AV_LOG_ERROR, "num_long_term_ref_pics_sps %d is out of range.\n",
1038 sps->num_long_term_ref_pics_sps);
1039 return AVERROR_INVALIDDATA;
1040 }
1041 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
1042 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
1043 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
1044 }
1045 }
1046
1047 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
1048 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
1049 sps->vui.sar = (AVRational){0, 1};
1050 vui_present = get_bits1(gb);
1051 if (vui_present)
1052 decode_vui(gb, avctx, apply_defdispwin, sps);
1053
1054 if (get_bits1(gb)) { // sps_extension_flag
1055 int sps_extension_flag[1];
1056 for (i = 0; i < 1; i++)
1057 sps_extension_flag[i] = get_bits1(gb);
1058 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
1059 if (sps_extension_flag[0]) {
1060 int extended_precision_processing_flag;
1061 int high_precision_offsets_enabled_flag;
1062 int cabac_bypass_alignment_enabled_flag;
1063
1064 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
1065 sps->transform_skip_context_enabled_flag = get_bits1(gb);
1066 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
1067
1068 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
1069
1070 extended_precision_processing_flag = get_bits1(gb);
1071 if (extended_precision_processing_flag)
1072 av_log(avctx, AV_LOG_WARNING,
1073 "extended_precision_processing_flag not yet implemented\n");
1074
1075 sps->intra_smoothing_disabled_flag = get_bits1(gb);
1076 high_precision_offsets_enabled_flag = get_bits1(gb);
1077 if (high_precision_offsets_enabled_flag)
1078 av_log(avctx, AV_LOG_WARNING,
1079 "high_precision_offsets_enabled_flag not yet implemented\n");
1080
1081 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
1082
1083 cabac_bypass_alignment_enabled_flag = get_bits1(gb);
1084 if (cabac_bypass_alignment_enabled_flag)
1085 av_log(avctx, AV_LOG_WARNING,
1086 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
1087 }
1088 }
1089 if (apply_defdispwin) {
1090 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
1091 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
1092 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
1093 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
1094 }
1095 if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
1096 !(avctx->flags & AV_CODEC_FLAG_UNALIGNED)) {
1097 sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
1098 av_log(avctx, AV_LOG_WARNING, "Reducing left output window to %d "
1099 "chroma samples to preserve alignment.\n",
1100 sps->output_window.left_offset);
1101 }
1102 sps->output_width = sps->width -
1103 (sps->output_window.left_offset + sps->output_window.right_offset);
1104 sps->output_height = sps->height -
1105 (sps->output_window.top_offset + sps->output_window.bottom_offset);
1106 if (sps->width <= sps->output_window.left_offset + (int64_t)sps->output_window.right_offset ||
1107 sps->height <= sps->output_window.top_offset + (int64_t)sps->output_window.bottom_offset) {
1108 av_log(avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
1109 sps->output_width, sps->output_height);
1110 if (avctx->err_recognition & AV_EF_EXPLODE) {
1111 return AVERROR_INVALIDDATA;
1112 }
1113 av_log(avctx, AV_LOG_WARNING,
1114 "Displaying the whole video surface.\n");
1115 memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win));
1116 memset(&sps->output_window, 0, sizeof(sps->output_window));
1117 sps->output_width = sps->width;
1118 sps->output_height = sps->height;
1119 }
1120
1121 // Inferred parameters
1122 sps->log2_ctb_size = sps->log2_min_cb_size +
1123 sps->log2_diff_max_min_coding_block_size;
1124 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1125
1126 if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {
1127 av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1128 return AVERROR_INVALIDDATA;
1129 }
1130 if (sps->log2_ctb_size < 4) {
1131 av_log(avctx,
1132 AV_LOG_ERROR,
1133 "log2_ctb_size %d differs from the bounds of any known profile\n",
1134 sps->log2_ctb_size);
1135 avpriv_request_sample(avctx, "log2_ctb_size %d", sps->log2_ctb_size);
1136 return AVERROR_INVALIDDATA;
1137 }
1138
1139 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1140 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1141 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1142
1143 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1144 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1145 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1146 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1147 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1148 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1149 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1150
1151 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1152
1153 if (av_mod_uintp2(sps->width, sps->log2_min_cb_size) ||
1154 av_mod_uintp2(sps->height, sps->log2_min_cb_size)) {
1155 av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1156 return AVERROR_INVALIDDATA;
1157 }
1158
1159 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1160 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1161 sps->max_transform_hierarchy_depth_inter);
1162 return AVERROR_INVALIDDATA;
1163 }
1164 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1165 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1166 sps->max_transform_hierarchy_depth_intra);
1167 return AVERROR_INVALIDDATA;
1168 }
1169 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1170 av_log(avctx, AV_LOG_ERROR,
1171 "max transform block size out of range: %d\n",
1172 sps->log2_max_trafo_size);
1173 return AVERROR_INVALIDDATA;
1174 }
1175
1176 if (get_bits_left(gb) < 0) {
1177 av_log(avctx, AV_LOG_ERROR,
1178 "Overread SPS by %d bits\n", -get_bits_left(gb));
1179 return AVERROR_INVALIDDATA;
1180 }
1181
1182 return 0;
1183}
1184
1185int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
1186 HEVCParamSets *ps, int apply_defdispwin)
1187{
1188 HEVCSPS *sps;
1189 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
1190 unsigned int sps_id;
1191 int ret;
1192 ptrdiff_t nal_size;
1193
1194 if (!sps_buf)
1195 return AVERROR(ENOMEM);
1196 sps = (HEVCSPS*)sps_buf->data;
1197
1198 av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n");
1199
1200 nal_size = gb->buffer_end - gb->buffer;
1201 if (nal_size > sizeof(sps->data)) {
1202 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized SPS "
1203 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1204 nal_size, sizeof(sps->data));
1205 sps->data_size = sizeof(sps->data);
1206 } else {
1207 sps->data_size = nal_size;
1208 }
1209 memcpy(sps->data, gb->buffer, sps->data_size);
1210
1211 ret = ff_hevc_parse_sps(sps, gb, &sps_id,
1212 apply_defdispwin,
1213 ps->vps_list, avctx);
1214 if (ret < 0) {
1215 av_buffer_unref(&sps_buf);
1216 return ret;
1217 }
1218
1219 if (avctx->debug & FF_DEBUG_BITSTREAM) {
1220 av_log(avctx, AV_LOG_DEBUG,
1221 "Parsed SPS: id %d; coded wxh: %dx%d; "
1222 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1223 sps_id, sps->width, sps->height,
1224 sps->output_width, sps->output_height,
1225 av_get_pix_fmt_name(sps->pix_fmt));
1226 }
1227
1228 /* check if this is a repeat of an already parsed SPS, then keep the
1229 * original one.
1230 * otherwise drop all PPSes that depend on it */
1231 if (ps->sps_list[sps_id] &&
1232 !memcmp(ps->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1233 av_buffer_unref(&sps_buf);
1234 } else {
1235 remove_sps(ps, sps_id);
1236 ps->sps_list[sps_id] = sps_buf;
1237 }
1238
1239 return 0;
1240}
1241
1242static void hevc_pps_free(void *opaque, uint8_t *data)
1243{
1244 HEVCPPS *pps = (HEVCPPS*)data;
1245
1246 av_freep(&pps->column_width);
1247 av_freep(&pps->row_height);
1248 av_freep(&pps->col_bd);
1249 av_freep(&pps->row_bd);
1250 av_freep(&pps->col_idxX);
1251 av_freep(&pps->ctb_addr_rs_to_ts);
1252 av_freep(&pps->ctb_addr_ts_to_rs);
1253 av_freep(&pps->tile_pos_rs);
1254 av_freep(&pps->tile_id);
1255 av_freep(&pps->min_tb_addr_zs_tab);
1256
1257 av_freep(&pps);
1258}
1259
1260static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx,
1261 HEVCPPS *pps, HEVCSPS *sps) {
1262 int i;
1263
1264 if (pps->transform_skip_enabled_flag) {
1265 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1266 }
1267 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1268 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1269 if (pps->chroma_qp_offset_list_enabled_flag) {
1270 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1271 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1272 if (pps->chroma_qp_offset_list_len_minus1 && pps->chroma_qp_offset_list_len_minus1 >= 5) {
1273 av_log(avctx, AV_LOG_ERROR,
1274 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1275 return AVERROR_INVALIDDATA;
1276 }
1277 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1278 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1279 if (pps->cb_qp_offset_list[i]) {
1280 av_log(avctx, AV_LOG_WARNING,
1281 "cb_qp_offset_list not tested yet.\n");
1282 }
1283 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1284 if (pps->cr_qp_offset_list[i]) {
1285 av_log(avctx, AV_LOG_WARNING,
1286 "cb_qp_offset_list not tested yet.\n");
1287 }
1288 }
1289 }
1290 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1291 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1292
1293 return(0);
1294}
1295
1296static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,
1297 HEVCPPS *pps, HEVCSPS *sps)
1298{
1299 int log2_diff;
1300 int pic_area_in_ctbs;
1301 int i, j, x, y, ctb_addr_rs, tile_id;
1302
1303 // Inferred parameters
1304 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1305 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1306 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1307 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)
1308 return AVERROR(ENOMEM);
1309
1310 if (pps->uniform_spacing_flag) {
1311 if (!pps->column_width) {
1312 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1313 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1314 }
1315 if (!pps->column_width || !pps->row_height)
1316 return AVERROR(ENOMEM);
1317
1318 for (i = 0; i < pps->num_tile_columns; i++) {
1319 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1320 (i * sps->ctb_width) / pps->num_tile_columns;
1321 }
1322
1323 for (i = 0; i < pps->num_tile_rows; i++) {
1324 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1325 (i * sps->ctb_height) / pps->num_tile_rows;
1326 }
1327 }
1328
1329 pps->col_bd[0] = 0;
1330 for (i = 0; i < pps->num_tile_columns; i++)
1331 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1332
1333 pps->row_bd[0] = 0;
1334 for (i = 0; i < pps->num_tile_rows; i++)
1335 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1336
1337 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1338 if (i > pps->col_bd[j])
1339 j++;
1340 pps->col_idxX[i] = j;
1341 }
1342
1343 /**
1344 * 6.5
1345 */
1346 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1347
1348 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1349 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1350 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1351 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1352 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1353 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1354 return AVERROR(ENOMEM);
1355 }
1356
1357 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1358 int tb_x = ctb_addr_rs % sps->ctb_width;
1359 int tb_y = ctb_addr_rs / sps->ctb_width;
1360 int tile_x = 0;
1361 int tile_y = 0;
1362 int val = 0;
1363
1364 for (i = 0; i < pps->num_tile_columns; i++) {
1365 if (tb_x < pps->col_bd[i + 1]) {
1366 tile_x = i;
1367 break;
1368 }
1369 }
1370
1371 for (i = 0; i < pps->num_tile_rows; i++) {
1372 if (tb_y < pps->row_bd[i + 1]) {
1373 tile_y = i;
1374 break;
1375 }
1376 }
1377
1378 for (i = 0; i < tile_x; i++)
1379 val += pps->row_height[tile_y] * pps->column_width[i];
1380 for (i = 0; i < tile_y; i++)
1381 val += sps->ctb_width * pps->row_height[i];
1382
1383 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1384 tb_x - pps->col_bd[tile_x];
1385
1386 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1387 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1388 }
1389
1390 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1391 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1392 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1393 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1394 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1395
1396 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1397 if (!pps->tile_pos_rs)
1398 return AVERROR(ENOMEM);
1399
1400 for (j = 0; j < pps->num_tile_rows; j++)
1401 for (i = 0; i < pps->num_tile_columns; i++)
1402 pps->tile_pos_rs[j * pps->num_tile_columns + i] =
1403 pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1404
1405 log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;
1406 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1407 for (y = 0; y < sps->tb_mask+2; y++) {
1408 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1409 pps->min_tb_addr_zs_tab[y] = -1;
1410 }
1411 for (y = 0; y < sps->tb_mask+1; y++) {
1412 for (x = 0; x < sps->tb_mask+1; x++) {
1413 int tb_x = x >> log2_diff;
1414 int tb_y = y >> log2_diff;
1415 int rs = sps->ctb_width * tb_y + tb_x;
1416 int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);
1417 for (i = 0; i < log2_diff; i++) {
1418 int m = 1 << i;
1419 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1420 }
1421 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1422 }
1423 }
1424
1425 return 0;
1426}
1427
1428int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
1429 HEVCParamSets *ps)
1430{
1431 HEVCSPS *sps = NULL;
1432 int i, ret = 0;
1433 unsigned int pps_id = 0;
1434 ptrdiff_t nal_size;
1435
1436 AVBufferRef *pps_buf;
1437 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1438
1439 if (!pps)
1440 return AVERROR(ENOMEM);
1441
1442 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1443 hevc_pps_free, NULL, 0);
1444 if (!pps_buf) {
1445 av_freep(&pps);
1446 return AVERROR(ENOMEM);
1447 }
1448
1449 av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1450
1451 nal_size = gb->buffer_end - gb->buffer;
1452 if (nal_size > sizeof(pps->data)) {
1453 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized PPS "
1454 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1455 nal_size, sizeof(pps->data));
1456 pps->data_size = sizeof(pps->data);
1457 } else {
1458 pps->data_size = nal_size;
1459 }
1460 memcpy(pps->data, gb->buffer, pps->data_size);
1461
1462 // Default values
1463 pps->loop_filter_across_tiles_enabled_flag = 1;
1464 pps->num_tile_columns = 1;
1465 pps->num_tile_rows = 1;
1466 pps->uniform_spacing_flag = 1;
1467 pps->disable_dbf = 0;
1468 pps->beta_offset = 0;
1469 pps->tc_offset = 0;
1470 pps->log2_max_transform_skip_block_size = 2;
1471
1472 // Coded parameters
1473 pps_id = get_ue_golomb_long(gb);
1474 if (pps_id >= HEVC_MAX_PPS_COUNT) {
1475 av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1476 ret = AVERROR_INVALIDDATA;
1477 goto err;
1478 }
1479 pps->sps_id = get_ue_golomb_long(gb);
1480 if (pps->sps_id >= HEVC_MAX_SPS_COUNT) {
1481 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1482 ret = AVERROR_INVALIDDATA;
1483 goto err;
1484 }
1485 if (!ps->sps_list[pps->sps_id]) {
1486 av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1487 ret = AVERROR_INVALIDDATA;
1488 goto err;
1489 }
1490 sps = (HEVCSPS *)ps->sps_list[pps->sps_id]->data;
1491
1492 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1493 pps->output_flag_present_flag = get_bits1(gb);
1494 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1495
1496 pps->sign_data_hiding_flag = get_bits1(gb);
1497
1498 pps->cabac_init_present_flag = get_bits1(gb);
1499
1500 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1501 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1502
1503 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1504
1505 pps->constrained_intra_pred_flag = get_bits1(gb);
1506 pps->transform_skip_enabled_flag = get_bits1(gb);
1507
1508 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1509 pps->diff_cu_qp_delta_depth = 0;
1510 if (pps->cu_qp_delta_enabled_flag)
1511 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1512
1513 if (pps->diff_cu_qp_delta_depth < 0 ||
1514 pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
1515 av_log(avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
1516 pps->diff_cu_qp_delta_depth);
1517 ret = AVERROR_INVALIDDATA;
1518 goto err;
1519 }
1520
1521 pps->cb_qp_offset = get_se_golomb(gb);
1522 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1523 av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1524 pps->cb_qp_offset);
1525 ret = AVERROR_INVALIDDATA;
1526 goto err;
1527 }
1528 pps->cr_qp_offset = get_se_golomb(gb);
1529 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1530 av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1531 pps->cr_qp_offset);
1532 ret = AVERROR_INVALIDDATA;
1533 goto err;
1534 }
1535 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1536
1537 pps->weighted_pred_flag = get_bits1(gb);
1538 pps->weighted_bipred_flag = get_bits1(gb);
1539
1540 pps->transquant_bypass_enable_flag = get_bits1(gb);
1541 pps->tiles_enabled_flag = get_bits1(gb);
1542 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1543
1544 if (pps->tiles_enabled_flag) {
1545 pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1546 pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1547 if (pps->num_tile_columns <= 0 ||
1548 pps->num_tile_columns >= sps->width) {
1549 av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1550 pps->num_tile_columns - 1);
1551 ret = AVERROR_INVALIDDATA;
1552 goto err;
1553 }
1554 if (pps->num_tile_rows <= 0 ||
1555 pps->num_tile_rows >= sps->height) {
1556 av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1557 pps->num_tile_rows - 1);
1558 ret = AVERROR_INVALIDDATA;
1559 goto err;
1560 }
1561
1562 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1563 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1564 if (!pps->column_width || !pps->row_height) {
1565 ret = AVERROR(ENOMEM);
1566 goto err;
1567 }
1568
1569 pps->uniform_spacing_flag = get_bits1(gb);
1570 if (!pps->uniform_spacing_flag) {
1571 uint64_t sum = 0;
1572 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1573 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1574 sum += pps->column_width[i];
1575 }
1576 if (sum >= sps->ctb_width) {
1577 av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1578 ret = AVERROR_INVALIDDATA;
1579 goto err;
1580 }
1581 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1582
1583 sum = 0;
1584 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1585 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1586 sum += pps->row_height[i];
1587 }
1588 if (sum >= sps->ctb_height) {
1589 av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1590 ret = AVERROR_INVALIDDATA;
1591 goto err;
1592 }
1593 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1594 }
1595 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1596 }
1597
1598 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1599
1600 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1601 if (pps->deblocking_filter_control_present_flag) {
1602 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1603 pps->disable_dbf = get_bits1(gb);
1604 if (!pps->disable_dbf) {
1605 pps->beta_offset = get_se_golomb(gb) * 2;
1606 pps->tc_offset = get_se_golomb(gb) * 2;
1607 if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1608 av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1609 pps->beta_offset/2);
1610 ret = AVERROR_INVALIDDATA;
1611 goto err;
1612 }
1613 if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1614 av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1615 pps->tc_offset/2);
1616 ret = AVERROR_INVALIDDATA;
1617 goto err;
1618 }
1619 }
1620 }
1621
1622 pps->scaling_list_data_present_flag = get_bits1(gb);
1623 if (pps->scaling_list_data_present_flag) {
1624 set_default_scaling_list_data(&pps->scaling_list);
1625 ret = scaling_list_data(gb, avctx, &pps->scaling_list, sps);
1626 if (ret < 0)
1627 goto err;
1628 }
1629 pps->lists_modification_present_flag = get_bits1(gb);
1630 pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1631 if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1632 av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1633 pps->log2_parallel_merge_level - 2);
1634 ret = AVERROR_INVALIDDATA;
1635 goto err;
1636 }
1637
1638 pps->slice_header_extension_present_flag = get_bits1(gb);
1639
1640 if (get_bits1(gb)) { // pps_extension_present_flag
1641 int pps_range_extensions_flag = get_bits1(gb);
1642 /* int pps_extension_7bits = */ get_bits(gb, 7);
1643 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps_range_extensions_flag) {
1644 if ((ret = pps_range_extensions(gb, avctx, pps, sps)) < 0)
1645 goto err;
1646 }
1647 }
1648
1649 ret = setup_pps(avctx, gb, pps, sps);
1650 if (ret < 0)
1651 goto err;
1652
1653 if (get_bits_left(gb) < 0) {
1654 av_log(avctx, AV_LOG_ERROR,
1655 "Overread PPS by %d bits\n", -get_bits_left(gb));
1656 goto err;
1657 }
1658
1659 remove_pps(ps, pps_id);
1660 ps->pps_list[pps_id] = pps_buf;
1661
1662 return 0;
1663
1664err:
1665 av_buffer_unref(&pps_buf);
1666 return ret;
1667}
1668
generated by cgit at 2024-05-17 04:18:54 (GMT)