1 /*
2 * HEVC Parameter Set decoding
3 *
4 * Copyright (C) 2012 - 2013 Guillaume Martres
5 * Copyright (C) 2012 - 2013 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
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
40 };
41
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
51 };
52
53 static 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
73 static const uint8_t hevc_sub_width_c[] = {
74 1, 2, 2, 1
75 };
76
77 static const uint8_t hevc_sub_height_c[] = {
78 1, 2, 1, 1
79 };
80
remove_pps(HEVCParamSets * s,int id)81 static void remove_pps(HEVCParamSets *s, int id)
82 {
83 if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)
84 s->pps = NULL;
85 av_buffer_unref(&s->pps_list[id]);
86 }
87
remove_sps(HEVCParamSets * s,int id)88 static void remove_sps(HEVCParamSets *s, int id)
89 {
90 int i;
91 if (s->sps_list[id]) {
92 if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)
93 s->sps = NULL;
94
95 /* drop all PPS that depend on this SPS */
96 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++)
97 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == id)
98 remove_pps(s, i);
99
100 av_assert0(!(s->sps_list[id] && s->sps == (HEVCSPS*)s->sps_list[id]->data));
101 }
102 av_buffer_unref(&s->sps_list[id]);
103 }
104
remove_vps(HEVCParamSets * s,int id)105 static void remove_vps(HEVCParamSets *s, int id)
106 {
107 int i;
108 if (s->vps_list[id]) {
109 if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)
110 s->vps = NULL;
111
112 for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
113 if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id)
114 remove_sps(s, i);
115 }
116 av_buffer_unref(&s->vps_list[id]);
117 }
118
ff_hevc_decode_short_term_rps(GetBitContext * gb,AVCodecContext * avctx,ShortTermRPS * rps,const HEVCSPS * sps,int is_slice_header)119 int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
120 ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
121 {
122 uint8_t rps_predict = 0;
123 int delta_poc;
124 int k0 = 0;
125 int k = 0;
126 int i;
127
128 if (rps != sps->st_rps && sps->nb_st_rps)
129 rps_predict = get_bits1(gb);
130
131 if (rps_predict) {
132 const ShortTermRPS *rps_ridx;
133 int delta_rps;
134 unsigned abs_delta_rps;
135 uint8_t use_delta_flag = 0;
136 uint8_t delta_rps_sign;
137
138 if (is_slice_header) {
139 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
140 if (delta_idx > sps->nb_st_rps) {
141 av_log(avctx, AV_LOG_ERROR,
142 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
143 delta_idx, sps->nb_st_rps);
144 return AVERROR_INVALIDDATA;
145 }
146 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
147 rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs;
148 } else
149 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
150
151 delta_rps_sign = get_bits1(gb);
152 abs_delta_rps = get_ue_golomb_long(gb) + 1;
153 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
154 av_log(avctx, AV_LOG_ERROR,
155 "Invalid value of abs_delta_rps: %d\n",
156 abs_delta_rps);
157 return AVERROR_INVALIDDATA;
158 }
159 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
160 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
161 int used = rps->used[k] = get_bits1(gb);
162
163 if (!used)
164 use_delta_flag = get_bits1(gb);
165
166 if (used || use_delta_flag) {
167 if (i < rps_ridx->num_delta_pocs)
168 delta_poc = delta_rps + rps_ridx->delta_poc[i];
169 else
170 delta_poc = delta_rps;
171 rps->delta_poc[k] = delta_poc;
172 if (delta_poc < 0)
173 k0++;
174 k++;
175 }
176 }
177
178 if (k >= FF_ARRAY_ELEMS(rps->used)) {
179 av_log(avctx, AV_LOG_ERROR,
180 "Invalid num_delta_pocs: %d\n", k);
181 return AVERROR_INVALIDDATA;
182 }
183
184 rps->num_delta_pocs = k;
185 rps->num_negative_pics = k0;
186 // sort in increasing order (smallest first)
187 if (rps->num_delta_pocs != 0) {
188 int used, tmp;
189 for (i = 1; i < rps->num_delta_pocs; i++) {
190 delta_poc = rps->delta_poc[i];
191 used = rps->used[i];
192 for (k = i - 1; k >= 0; k--) {
193 tmp = rps->delta_poc[k];
194 if (delta_poc < tmp) {
195 rps->delta_poc[k + 1] = tmp;
196 rps->used[k + 1] = rps->used[k];
197 rps->delta_poc[k] = delta_poc;
198 rps->used[k] = used;
199 }
200 }
201 }
202 }
203 if ((rps->num_negative_pics >> 1) != 0) {
204 int used;
205 k = rps->num_negative_pics - 1;
206 // flip the negative values to largest first
207 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
208 delta_poc = rps->delta_poc[i];
209 used = rps->used[i];
210 rps->delta_poc[i] = rps->delta_poc[k];
211 rps->used[i] = rps->used[k];
212 rps->delta_poc[k] = delta_poc;
213 rps->used[k] = used;
214 k--;
215 }
216 }
217 } else {
218 unsigned int prev, nb_positive_pics;
219 rps->num_negative_pics = get_ue_golomb_long(gb);
220 nb_positive_pics = get_ue_golomb_long(gb);
221
222 if (rps->num_negative_pics >= HEVC_MAX_REFS ||
223 nb_positive_pics >= HEVC_MAX_REFS) {
224 av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
225 return AVERROR_INVALIDDATA;
226 }
227
228 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
229 if (rps->num_delta_pocs) {
230 prev = 0;
231 for (i = 0; i < rps->num_negative_pics; i++) {
232 delta_poc = get_ue_golomb_long(gb) + 1;
233 if (delta_poc < 1 || delta_poc > 32768) {
234 av_log(avctx, AV_LOG_ERROR,
235 "Invalid value of delta_poc: %d\n",
236 delta_poc);
237 return AVERROR_INVALIDDATA;
238 }
239 prev -= delta_poc;
240 rps->delta_poc[i] = prev;
241 rps->used[i] = get_bits1(gb);
242 }
243 prev = 0;
244 for (i = 0; i < nb_positive_pics; i++) {
245 delta_poc = get_ue_golomb_long(gb) + 1;
246 if (delta_poc < 1 || delta_poc > 32768) {
247 av_log(avctx, AV_LOG_ERROR,
248 "Invalid value of delta_poc: %d\n",
249 delta_poc);
250 return AVERROR_INVALIDDATA;
251 }
252 prev += delta_poc;
253 rps->delta_poc[rps->num_negative_pics + i] = prev;
254 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
255 }
256 }
257 }
258 return 0;
259 }
260
261
decode_profile_tier_level(GetBitContext * gb,AVCodecContext * avctx,PTLCommon * ptl)262 static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,
263 PTLCommon *ptl)
264 {
265 int i;
266
267 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 43 + 1)
268 return -1;
269
270 ptl->profile_space = get_bits(gb, 2);
271 ptl->tier_flag = get_bits1(gb);
272 ptl->profile_idc = get_bits(gb, 5);
273 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
274 av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
275 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
276 av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
277 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
278 av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
279 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
280 av_log(avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
281 else
282 av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
283
284 for (i = 0; i < 32; i++) {
285 ptl->profile_compatibility_flag[i] = get_bits1(gb);
286
287 if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i])
288 ptl->profile_idc = i;
289 }
290 ptl->progressive_source_flag = get_bits1(gb);
291 ptl->interlaced_source_flag = get_bits1(gb);
292 ptl->non_packed_constraint_flag = get_bits1(gb);
293 ptl->frame_only_constraint_flag = get_bits1(gb);
294
295 #define check_profile_idc(idc) \
296 ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc]
297
298 if (check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(6) ||
299 check_profile_idc(7) || check_profile_idc(8) || check_profile_idc(9) ||
300 check_profile_idc(10)) {
301
302 ptl->max_12bit_constraint_flag = get_bits1(gb);
303 ptl->max_10bit_constraint_flag = get_bits1(gb);
304 ptl->max_8bit_constraint_flag = get_bits1(gb);
305 ptl->max_422chroma_constraint_flag = get_bits1(gb);
306 ptl->max_420chroma_constraint_flag = get_bits1(gb);
307 ptl->max_monochrome_constraint_flag = get_bits1(gb);
308 ptl->intra_constraint_flag = get_bits1(gb);
309 ptl->one_picture_only_constraint_flag = get_bits1(gb);
310 ptl->lower_bit_rate_constraint_flag = get_bits1(gb);
311
312 if (check_profile_idc(5) || check_profile_idc(9) || check_profile_idc(10)) {
313 ptl->max_14bit_constraint_flag = get_bits1(gb);
314 skip_bits_long(gb, 33); // XXX_reserved_zero_33bits[0..32]
315 } else {
316 skip_bits_long(gb, 34); // XXX_reserved_zero_34bits[0..33]
317 }
318 } else if (check_profile_idc(2)) {
319 skip_bits(gb, 7);
320 ptl->one_picture_only_constraint_flag = get_bits1(gb);
321 skip_bits_long(gb, 35); // XXX_reserved_zero_35bits[0..34]
322 } else {
323 skip_bits_long(gb, 43); // XXX_reserved_zero_43bits[0..42]
324 }
325
326 if (check_profile_idc(1) || check_profile_idc(2) || check_profile_idc(3) ||
327 check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(9))
328 ptl->inbld_flag = get_bits1(gb);
329 else
330 skip_bits1(gb);
331 #undef check_profile_idc
332
333 return 0;
334 }
335
parse_ptl(GetBitContext * gb,AVCodecContext * avctx,PTL * ptl,int max_num_sub_layers)336 static int parse_ptl(GetBitContext *gb, AVCodecContext *avctx,
337 PTL *ptl, int max_num_sub_layers)
338 {
339 int i;
340 if (decode_profile_tier_level(gb, avctx, &ptl->general_ptl) < 0 ||
341 get_bits_left(gb) < 8 + (8*2 * (max_num_sub_layers - 1 > 0))) {
342 av_log(avctx, AV_LOG_ERROR, "PTL information too short\n");
343 return -1;
344 }
345
346 ptl->general_ptl.level_idc = get_bits(gb, 8);
347
348 for (i = 0; i < max_num_sub_layers - 1; i++) {
349 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
350 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
351 }
352
353 if (max_num_sub_layers - 1> 0)
354 for (i = max_num_sub_layers - 1; i < 8; i++)
355 skip_bits(gb, 2); // reserved_zero_2bits[i]
356 for (i = 0; i < max_num_sub_layers - 1; i++) {
357 if (ptl->sub_layer_profile_present_flag[i] &&
358 decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]) < 0) {
359 av_log(avctx, AV_LOG_ERROR,
360 "PTL information for sublayer %i too short\n", i);
361 return -1;
362 }
363 if (ptl->sub_layer_level_present_flag[i]) {
364 if (get_bits_left(gb) < 8) {
365 av_log(avctx, AV_LOG_ERROR,
366 "Not enough data for sublayer %i level_idc\n", i);
367 return -1;
368 } else
369 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
370 }
371 }
372
373 return 0;
374 }
375
decode_sublayer_hrd(GetBitContext * gb,unsigned int nb_cpb,int subpic_params_present)376 static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,
377 int subpic_params_present)
378 {
379 int i;
380
381 for (i = 0; i < nb_cpb; i++) {
382 get_ue_golomb_long(gb); // bit_rate_value_minus1
383 get_ue_golomb_long(gb); // cpb_size_value_minus1
384
385 if (subpic_params_present) {
386 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
387 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
388 }
389 skip_bits1(gb); // cbr_flag
390 }
391 }
392
decode_hrd(GetBitContext * gb,int common_inf_present,int max_sublayers)393 static int decode_hrd(GetBitContext *gb, int common_inf_present,
394 int max_sublayers)
395 {
396 int nal_params_present = 0, vcl_params_present = 0;
397 int subpic_params_present = 0;
398 int i;
399
400 if (common_inf_present) {
401 nal_params_present = get_bits1(gb);
402 vcl_params_present = get_bits1(gb);
403
404 if (nal_params_present || vcl_params_present) {
405 subpic_params_present = get_bits1(gb);
406
407 if (subpic_params_present) {
408 skip_bits(gb, 8); // tick_divisor_minus2
409 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
410 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
411 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
412 }
413
414 skip_bits(gb, 4); // bit_rate_scale
415 skip_bits(gb, 4); // cpb_size_scale
416
417 if (subpic_params_present)
418 skip_bits(gb, 4); // cpb_size_du_scale
419
420 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
421 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
422 skip_bits(gb, 5); // dpb_output_delay_length_minus1
423 }
424 }
425
426 for (i = 0; i < max_sublayers; i++) {
427 int low_delay = 0;
428 unsigned int nb_cpb = 1;
429 int fixed_rate = get_bits1(gb);
430
431 if (!fixed_rate)
432 fixed_rate = get_bits1(gb);
433
434 if (fixed_rate)
435 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
436 else
437 low_delay = get_bits1(gb);
438
439 if (!low_delay) {
440 nb_cpb = get_ue_golomb_long(gb) + 1;
441 if (nb_cpb < 1 || nb_cpb > 32) {
442 av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
443 return AVERROR_INVALIDDATA;
444 }
445 }
446
447 if (nal_params_present)
448 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
449 if (vcl_params_present)
450 decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);
451 }
452 return 0;
453 }
454
ff_hevc_decode_nal_vps(GetBitContext * gb,AVCodecContext * avctx,HEVCParamSets * ps)455 int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
456 HEVCParamSets *ps)
457 {
458 int i,j;
459 int vps_id = 0;
460 ptrdiff_t nal_size;
461 HEVCVPS *vps;
462 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
463
464 if (!vps_buf)
465 return AVERROR(ENOMEM);
466 vps = (HEVCVPS*)vps_buf->data;
467
468 av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n");
469
470 nal_size = gb->buffer_end - gb->buffer;
471 if (nal_size > sizeof(vps->data)) {
472 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized VPS "
473 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
474 nal_size, sizeof(vps->data));
475 vps->data_size = sizeof(vps->data);
476 } else {
477 vps->data_size = nal_size;
478 }
479 memcpy(vps->data, gb->buffer, vps->data_size);
480
481 vps_id = get_bits(gb, 4);
482
483 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
484 av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
485 goto err;
486 }
487
488 vps->vps_max_layers = get_bits(gb, 6) + 1;
489 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
490 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
491
492 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
493 av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
494 goto err;
495 }
496
497 if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) {
498 av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
499 vps->vps_max_sub_layers);
500 goto err;
501 }
502
503 if (parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers) < 0)
504 goto err;
505
506 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
507
508 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
509 for (; i < vps->vps_max_sub_layers; i++) {
510 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
511 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
512 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
513
514 if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
515 av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
516 vps->vps_max_dec_pic_buffering[i] - 1);
517 goto err;
518 }
519 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
520 av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
521 vps->vps_num_reorder_pics[i]);
522 if (avctx->err_recognition & AV_EF_EXPLODE)
523 goto err;
524 }
525 }
526
527 vps->vps_max_layer_id = get_bits(gb, 6);
528 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
529 if (vps->vps_num_layer_sets < 1 || vps->vps_num_layer_sets > 1024 ||
530 (vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
531 av_log(avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
532 goto err;
533 }
534
535 for (i = 1; i < vps->vps_num_layer_sets; i++)
536 for (j = 0; j <= vps->vps_max_layer_id; j++)
537 skip_bits(gb, 1); // layer_id_included_flag[i][j]
538
539 vps->vps_timing_info_present_flag = get_bits1(gb);
540 if (vps->vps_timing_info_present_flag) {
541 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
542 vps->vps_time_scale = get_bits_long(gb, 32);
543 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
544 if (vps->vps_poc_proportional_to_timing_flag)
545 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
546 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
547 if (vps->vps_num_hrd_parameters > (unsigned)vps->vps_num_layer_sets) {
548 av_log(avctx, AV_LOG_ERROR,
549 "vps_num_hrd_parameters %d is invalid\n", vps->vps_num_hrd_parameters);
550 goto err;
551 }
552 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
553 int common_inf_present = 1;
554
555 get_ue_golomb_long(gb); // hrd_layer_set_idx
556 if (i)
557 common_inf_present = get_bits1(gb);
558 decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers);
559 }
560 }
561 get_bits1(gb); /* vps_extension_flag */
562
563 if (get_bits_left(gb) < 0) {
564 av_log(avctx, AV_LOG_ERROR,
565 "Overread VPS by %d bits\n", -get_bits_left(gb));
566 if (ps->vps_list[vps_id])
567 goto err;
568 }
569
570 if (ps->vps_list[vps_id] &&
571 !memcmp(ps->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {
572 av_buffer_unref(&vps_buf);
573 } else {
574 remove_vps(ps, vps_id);
575 ps->vps_list[vps_id] = vps_buf;
576 }
577
578 return 0;
579
580 err:
581 av_buffer_unref(&vps_buf);
582 return AVERROR_INVALIDDATA;
583 }
584
decode_vui(GetBitContext * gb,AVCodecContext * avctx,int apply_defdispwin,HEVCSPS * sps)585 static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,
586 int apply_defdispwin, HEVCSPS *sps)
587 {
588 VUI backup_vui, *vui = &sps->vui;
589 GetBitContext backup;
590 int sar_present, alt = 0;
591
592 av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n");
593
594 sar_present = get_bits1(gb);
595 if (sar_present) {
596 uint8_t sar_idx = get_bits(gb, 8);
597 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
598 vui->sar = vui_sar[sar_idx];
599 else if (sar_idx == 255) {
600 vui->sar.num = get_bits(gb, 16);
601 vui->sar.den = get_bits(gb, 16);
602 } else
603 av_log(avctx, AV_LOG_WARNING,
604 "Unknown SAR index: %u.\n", sar_idx);
605 }
606
607 vui->overscan_info_present_flag = get_bits1(gb);
608 if (vui->overscan_info_present_flag)
609 vui->overscan_appropriate_flag = get_bits1(gb);
610
611 vui->video_signal_type_present_flag = get_bits1(gb);
612 if (vui->video_signal_type_present_flag) {
613 vui->video_format = get_bits(gb, 3);
614 vui->video_full_range_flag = get_bits1(gb);
615 vui->colour_description_present_flag = get_bits1(gb);
616 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
617 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
618 if (vui->colour_description_present_flag) {
619 vui->colour_primaries = get_bits(gb, 8);
620 vui->transfer_characteristic = get_bits(gb, 8);
621 vui->matrix_coeffs = get_bits(gb, 8);
622
623 // Set invalid values to "unspecified"
624 if (!av_color_primaries_name(vui->colour_primaries))
625 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
626 if (!av_color_transfer_name(vui->transfer_characteristic))
627 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
628 if (!av_color_space_name(vui->matrix_coeffs))
629 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
630 if (vui->matrix_coeffs == AVCOL_SPC_RGB) {
631 switch (sps->pix_fmt) {
632 case AV_PIX_FMT_YUV444P:
633 sps->pix_fmt = AV_PIX_FMT_GBRP;
634 break;
635 case AV_PIX_FMT_YUV444P10:
636 sps->pix_fmt = AV_PIX_FMT_GBRP10;
637 break;
638 case AV_PIX_FMT_YUV444P12:
639 sps->pix_fmt = AV_PIX_FMT_GBRP12;
640 break;
641 }
642 }
643 }
644 }
645
646 vui->chroma_loc_info_present_flag = get_bits1(gb);
647 if (vui->chroma_loc_info_present_flag) {
648 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
649 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
650 }
651
652 vui->neutra_chroma_indication_flag = get_bits1(gb);
653 vui->field_seq_flag = get_bits1(gb);
654 vui->frame_field_info_present_flag = get_bits1(gb);
655
656 // Backup context in case an alternate header is detected
657 memcpy(&backup, gb, sizeof(backup));
658 memcpy(&backup_vui, vui, sizeof(backup_vui));
659 if (get_bits_left(gb) >= 68 && show_bits(gb, 21) == 0x100000) {
660 vui->default_display_window_flag = 0;
661 av_log(avctx, AV_LOG_WARNING, "Invalid default display window\n");
662 } else
663 vui->default_display_window_flag = get_bits1(gb);
664
665 if (vui->default_display_window_flag) {
666 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
667 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
668 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
669 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
670 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
671 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
672
673 if (apply_defdispwin &&
674 avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
675 av_log(avctx, AV_LOG_DEBUG,
676 "discarding vui default display window, "
677 "original values are l:%u r:%u t:%u b:%u\n",
678 vui->def_disp_win.left_offset,
679 vui->def_disp_win.right_offset,
680 vui->def_disp_win.top_offset,
681 vui->def_disp_win.bottom_offset);
682
683 vui->def_disp_win.left_offset =
684 vui->def_disp_win.right_offset =
685 vui->def_disp_win.top_offset =
686 vui->def_disp_win.bottom_offset = 0;
687 }
688 }
689
690 timing_info:
691 vui->vui_timing_info_present_flag = get_bits1(gb);
692
693 if (vui->vui_timing_info_present_flag) {
694 if( get_bits_left(gb) < 66 && !alt) {
695 // The alternate syntax seem to have timing info located
696 // at where def_disp_win is normally located
697 av_log(avctx, AV_LOG_WARNING,
698 "Strange VUI timing information, retrying...\n");
699 memcpy(vui, &backup_vui, sizeof(backup_vui));
700 memcpy(gb, &backup, sizeof(backup));
701 alt = 1;
702 goto timing_info;
703 }
704 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
705 vui->vui_time_scale = get_bits_long(gb, 32);
706 if (alt) {
707 av_log(avctx, AV_LOG_INFO, "Retry got %"PRIu32"/%"PRIu32" fps\n",
708 vui->vui_time_scale, vui->vui_num_units_in_tick);
709 }
710 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
711 if (vui->vui_poc_proportional_to_timing_flag)
712 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
713 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
714 if (vui->vui_hrd_parameters_present_flag)
715 decode_hrd(gb, 1, sps->max_sub_layers);
716 }
717
718 vui->bitstream_restriction_flag = get_bits1(gb);
719 if (vui->bitstream_restriction_flag) {
720 if (get_bits_left(gb) < 8 && !alt) {
721 av_log(avctx, AV_LOG_WARNING,
722 "Strange VUI bitstream restriction information, retrying"
723 " from timing information...\n");
724 memcpy(vui, &backup_vui, sizeof(backup_vui));
725 memcpy(gb, &backup, sizeof(backup));
726 alt = 1;
727 goto timing_info;
728 }
729 vui->tiles_fixed_structure_flag = get_bits1(gb);
730 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
731 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
732 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
733 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
734 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
735 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
736 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
737 }
738
739 if (get_bits_left(gb) < 1 && !alt) {
740 // XXX: Alternate syntax when sps_range_extension_flag != 0?
741 av_log(avctx, AV_LOG_WARNING,
742 "Overread in VUI, retrying from timing information...\n");
743 memcpy(vui, &backup_vui, sizeof(backup_vui));
744 memcpy(gb, &backup, sizeof(backup));
745 alt = 1;
746 goto timing_info;
747 }
748 }
749
set_default_scaling_list_data(ScalingList * sl)750 static void set_default_scaling_list_data(ScalingList *sl)
751 {
752 int matrixId;
753
754 for (matrixId = 0; matrixId < 6; matrixId++) {
755 // 4x4 default is 16
756 memset(sl->sl[0][matrixId], 16, 16);
757 sl->sl_dc[0][matrixId] = 16; // default for 16x16
758 sl->sl_dc[1][matrixId] = 16; // default for 32x32
759 }
760 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
761 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
762 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
763 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
764 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
765 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
766 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
767 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
768 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
769 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
770 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
771 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
772 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
773 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
774 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
775 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
776 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
777 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
778 }
779
scaling_list_data(GetBitContext * gb,AVCodecContext * avctx,ScalingList * sl,HEVCSPS * sps)780 static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl, HEVCSPS *sps)
781 {
782 uint8_t scaling_list_pred_mode_flag;
783 uint8_t scaling_list_dc_coef[2][6];
784 int size_id, matrix_id, pos;
785 int i;
786
787 for (size_id = 0; size_id < 4; size_id++)
788 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
789 scaling_list_pred_mode_flag = get_bits1(gb);
790 if (!scaling_list_pred_mode_flag) {
791 unsigned int delta = get_ue_golomb_long(gb);
792 /* Only need to handle non-zero delta. Zero means default,
793 * which should already be in the arrays. */
794 if (delta) {
795 // Copy from previous array.
796 delta *= (size_id == 3) ? 3 : 1;
797 if (matrix_id < delta) {
798 av_log(avctx, AV_LOG_ERROR,
799 "Invalid delta in scaling list data: %d.\n", delta);
800 return AVERROR_INVALIDDATA;
801 }
802
803 memcpy(sl->sl[size_id][matrix_id],
804 sl->sl[size_id][matrix_id - delta],
805 size_id > 0 ? 64 : 16);
806 if (size_id > 1)
807 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
808 }
809 } else {
810 int next_coef, coef_num;
811 int32_t scaling_list_delta_coef;
812
813 next_coef = 8;
814 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
815 if (size_id > 1) {
816 int scaling_list_coeff_minus8 = get_se_golomb(gb);
817 if (scaling_list_coeff_minus8 < -7 ||
818 scaling_list_coeff_minus8 > 247)
819 return AVERROR_INVALIDDATA;
820 scaling_list_dc_coef[size_id - 2][matrix_id] = scaling_list_coeff_minus8 + 8;
821 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
822 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
823 }
824 for (i = 0; i < coef_num; i++) {
825 if (size_id == 0)
826 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
827 ff_hevc_diag_scan4x4_x[i];
828 else
829 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
830 ff_hevc_diag_scan8x8_x[i];
831
832 scaling_list_delta_coef = get_se_golomb(gb);
833 next_coef = (next_coef + 256U + scaling_list_delta_coef) % 256;
834 sl->sl[size_id][matrix_id][pos] = next_coef;
835 }
836 }
837 }
838
839 if (sps->chroma_format_idc == 3) {
840 for (i = 0; i < 64; i++) {
841 sl->sl[3][1][i] = sl->sl[2][1][i];
842 sl->sl[3][2][i] = sl->sl[2][2][i];
843 sl->sl[3][4][i] = sl->sl[2][4][i];
844 sl->sl[3][5][i] = sl->sl[2][5][i];
845 }
846 sl->sl_dc[1][1] = sl->sl_dc[0][1];
847 sl->sl_dc[1][2] = sl->sl_dc[0][2];
848 sl->sl_dc[1][4] = sl->sl_dc[0][4];
849 sl->sl_dc[1][5] = sl->sl_dc[0][5];
850 }
851
852
853 return 0;
854 }
855
map_pixel_format(AVCodecContext * avctx,HEVCSPS * sps)856 static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps)
857 {
858 const AVPixFmtDescriptor *desc;
859 switch (sps->bit_depth) {
860 case 8:
861 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
862 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
863 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
864 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
865 break;
866 case 9:
867 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY9;
868 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
869 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
870 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
871 break;
872 case 10:
873 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10;
874 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
875 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
876 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
877 break;
878 case 12:
879 if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12;
880 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
881 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
882 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
883 break;
884 default:
885 av_log(avctx, AV_LOG_ERROR,
886 "The following bit-depths are currently specified: 8, 9, 10 and 12 bits, "
887 "chroma_format_idc is %d, depth is %d\n",
888 sps->chroma_format_idc, sps->bit_depth);
889 return AVERROR_INVALIDDATA;
890 }
891
892 desc = av_pix_fmt_desc_get(sps->pix_fmt);
893 if (!desc)
894 return AVERROR(EINVAL);
895
896 sps->hshift[0] = sps->vshift[0] = 0;
897 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
898 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
899
900 sps->pixel_shift = sps->bit_depth > 8;
901
902 return 0;
903 }
904
ff_hevc_parse_sps(HEVCSPS * sps,GetBitContext * gb,unsigned int * sps_id,int apply_defdispwin,AVBufferRef ** vps_list,AVCodecContext * avctx)905 int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
906 int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)
907 {
908 HEVCWindow *ow;
909 int ret = 0;
910 int log2_diff_max_min_transform_block_size;
911 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
912 int i;
913
914 // Coded parameters
915
916 sps->vps_id = get_bits(gb, 4);
917
918 if (vps_list && !vps_list[sps->vps_id]) {
919 av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
920 sps->vps_id);
921 return AVERROR_INVALIDDATA;
922 }
923
924 sps->max_sub_layers = get_bits(gb, 3) + 1;
925 if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) {
926 av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
927 sps->max_sub_layers);
928 return AVERROR_INVALIDDATA;
929 }
930
931 sps->temporal_id_nesting_flag = get_bits(gb, 1);
932
933 if ((ret = parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers)) < 0)
934 return ret;
935
936 *sps_id = get_ue_golomb_long(gb);
937 if (*sps_id >= HEVC_MAX_SPS_COUNT) {
938 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);
939 return AVERROR_INVALIDDATA;
940 }
941
942 sps->chroma_format_idc = get_ue_golomb_long(gb);
943 if (sps->chroma_format_idc > 3U) {
944 av_log(avctx, AV_LOG_ERROR, "chroma_format_idc %d is invalid\n", sps->chroma_format_idc);
945 return AVERROR_INVALIDDATA;
946 }
947
948 if (sps->chroma_format_idc == 3)
949 sps->separate_colour_plane_flag = get_bits1(gb);
950
951 if (sps->separate_colour_plane_flag)
952 sps->chroma_format_idc = 0;
953
954 sps->width = get_ue_golomb_long(gb);
955 sps->height = get_ue_golomb_long(gb);
956 if ((ret = av_image_check_size(sps->width,
957 sps->height, 0, avctx)) < 0)
958 return ret;
959
960 if (get_bits1(gb)) { // pic_conformance_flag
961 int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
962 int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
963 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
964 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
965 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
966 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
967
968 if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
969 av_log(avctx, AV_LOG_DEBUG,
970 "discarding sps conformance window, "
971 "original values are l:%u r:%u t:%u b:%u\n",
972 sps->pic_conf_win.left_offset,
973 sps->pic_conf_win.right_offset,
974 sps->pic_conf_win.top_offset,
975 sps->pic_conf_win.bottom_offset);
976
977 sps->pic_conf_win.left_offset =
978 sps->pic_conf_win.right_offset =
979 sps->pic_conf_win.top_offset =
980 sps->pic_conf_win.bottom_offset = 0;
981 }
982 sps->output_window = sps->pic_conf_win;
983 }
984
985 sps->bit_depth = get_ue_golomb_long(gb) + 8;
986 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
987 if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) {
988 av_log(avctx, AV_LOG_ERROR,
989 "Luma bit depth (%d) is different from chroma bit depth (%d), "
990 "this is unsupported.\n",
991 sps->bit_depth, bit_depth_chroma);
992 return AVERROR_INVALIDDATA;
993 }
994 sps->bit_depth_chroma = bit_depth_chroma;
995
996 ret = map_pixel_format(avctx, sps);
997 if (ret < 0)
998 return ret;
999
1000 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
1001 if (sps->log2_max_poc_lsb > 16) {
1002 av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
1003 sps->log2_max_poc_lsb - 4);
1004 return AVERROR_INVALIDDATA;
1005 }
1006
1007 sublayer_ordering_info = get_bits1(gb);
1008 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
1009 for (i = start; i < sps->max_sub_layers; i++) {
1010 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
1011 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
1012 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
1013 if (sps->temporal_layer[i].max_dec_pic_buffering > (unsigned)HEVC_MAX_DPB_SIZE) {
1014 av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
1015 sps->temporal_layer[i].max_dec_pic_buffering - 1U);
1016 return AVERROR_INVALIDDATA;
1017 }
1018 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
1019 av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
1020 sps->temporal_layer[i].num_reorder_pics);
1021 if (avctx->err_recognition & AV_EF_EXPLODE ||
1022 sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {
1023 return AVERROR_INVALIDDATA;
1024 }
1025 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
1026 }
1027 }
1028
1029 if (!sublayer_ordering_info) {
1030 for (i = 0; i < start; i++) {
1031 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
1032 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
1033 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
1034 }
1035 }
1036
1037 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
1038 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
1039 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
1040 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
1041 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
1042 sps->log2_min_tb_size;
1043
1044 if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) {
1045 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size);
1046 return AVERROR_INVALIDDATA;
1047 }
1048
1049 if (sps->log2_diff_max_min_coding_block_size > 30) {
1050 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);
1051 return AVERROR_INVALIDDATA;
1052 }
1053
1054 if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) {
1055 av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
1056 return AVERROR_INVALIDDATA;
1057 }
1058
1059 if (log2_diff_max_min_transform_block_size < 0 || log2_diff_max_min_transform_block_size > 30) {
1060 av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size", log2_diff_max_min_transform_block_size);
1061 return AVERROR_INVALIDDATA;
1062 }
1063
1064 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
1065 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
1066
1067 sps->scaling_list_enable_flag = get_bits1(gb);
1068 if (sps->scaling_list_enable_flag) {
1069 set_default_scaling_list_data(&sps->scaling_list);
1070
1071 if (get_bits1(gb)) {
1072 ret = scaling_list_data(gb, avctx, &sps->scaling_list, sps);
1073 if (ret < 0)
1074 return ret;
1075 }
1076 }
1077
1078 sps->amp_enabled_flag = get_bits1(gb);
1079 sps->sao_enabled = get_bits1(gb);
1080
1081 sps->pcm_enabled_flag = get_bits1(gb);
1082 if (sps->pcm_enabled_flag) {
1083 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
1084 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
1085 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
1086 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
1087 get_ue_golomb_long(gb);
1088 if (FFMAX(sps->pcm.bit_depth, sps->pcm.bit_depth_chroma) > sps->bit_depth) {
1089 av_log(avctx, AV_LOG_ERROR,
1090 "PCM bit depth (%d, %d) is greater than normal bit depth (%d)\n",
1091 sps->pcm.bit_depth, sps->pcm.bit_depth_chroma, sps->bit_depth);
1092 return AVERROR_INVALIDDATA;
1093 }
1094
1095 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
1096 }
1097
1098 sps->nb_st_rps = get_ue_golomb_long(gb);
1099 if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_REF_PIC_SETS) {
1100 av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
1101 sps->nb_st_rps);
1102 return AVERROR_INVALIDDATA;
1103 }
1104 for (i = 0; i < sps->nb_st_rps; i++) {
1105 if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],
1106 sps, 0)) < 0)
1107 return ret;
1108 }
1109
1110 sps->long_term_ref_pics_present_flag = get_bits1(gb);
1111 if (sps->long_term_ref_pics_present_flag) {
1112 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
1113 if (sps->num_long_term_ref_pics_sps > HEVC_MAX_LONG_TERM_REF_PICS) {
1114 av_log(avctx, AV_LOG_ERROR, "Too many long term ref pics: %d.\n",
1115 sps->num_long_term_ref_pics_sps);
1116 return AVERROR_INVALIDDATA;
1117 }
1118 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
1119 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
1120 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
1121 }
1122 }
1123
1124 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
1125 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
1126 sps->vui.sar = (AVRational){0, 1};
1127 vui_present = get_bits1(gb);
1128 if (vui_present)
1129 decode_vui(gb, avctx, apply_defdispwin, sps);
1130
1131 if (get_bits1(gb)) { // sps_extension_flag
1132 sps->sps_range_extension_flag = get_bits1(gb);
1133 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
1134 if (sps->sps_range_extension_flag) {
1135 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
1136 sps->transform_skip_context_enabled_flag = get_bits1(gb);
1137 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
1138
1139 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
1140
1141 sps->extended_precision_processing_flag = get_bits1(gb);
1142 if (sps->extended_precision_processing_flag)
1143 av_log(avctx, AV_LOG_WARNING,
1144 "extended_precision_processing_flag not yet implemented\n");
1145
1146 sps->intra_smoothing_disabled_flag = get_bits1(gb);
1147 sps->high_precision_offsets_enabled_flag = get_bits1(gb);
1148 if (sps->high_precision_offsets_enabled_flag)
1149 av_log(avctx, AV_LOG_WARNING,
1150 "high_precision_offsets_enabled_flag not yet implemented\n");
1151
1152 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
1153
1154 sps->cabac_bypass_alignment_enabled_flag = get_bits1(gb);
1155 if (sps->cabac_bypass_alignment_enabled_flag)
1156 av_log(avctx, AV_LOG_WARNING,
1157 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
1158 }
1159 }
1160 if (apply_defdispwin) {
1161 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
1162 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
1163 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
1164 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
1165 }
1166
1167 ow = &sps->output_window;
1168 if (ow->left_offset >= INT_MAX - ow->right_offset ||
1169 ow->top_offset >= INT_MAX - ow->bottom_offset ||
1170 ow->left_offset + ow->right_offset >= sps->width ||
1171 ow->top_offset + ow->bottom_offset >= sps->height) {
1172 av_log(avctx, AV_LOG_WARNING, "Invalid cropping offsets: %u/%u/%u/%u\n",
1173 ow->left_offset, ow->right_offset, ow->top_offset, ow->bottom_offset);
1174 if (avctx->err_recognition & AV_EF_EXPLODE) {
1175 return AVERROR_INVALIDDATA;
1176 }
1177 av_log(avctx, AV_LOG_WARNING,
1178 "Displaying the whole video surface.\n");
1179 memset(ow, 0, sizeof(*ow));
1180 memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win));
1181 }
1182
1183 // Inferred parameters
1184 sps->log2_ctb_size = sps->log2_min_cb_size +
1185 sps->log2_diff_max_min_coding_block_size;
1186 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1187
1188 if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {
1189 av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1190 return AVERROR_INVALIDDATA;
1191 }
1192 if (sps->log2_ctb_size < 4) {
1193 av_log(avctx,
1194 AV_LOG_ERROR,
1195 "log2_ctb_size %d differs from the bounds of any known profile\n",
1196 sps->log2_ctb_size);
1197 avpriv_request_sample(avctx, "log2_ctb_size %d", sps->log2_ctb_size);
1198 return AVERROR_INVALIDDATA;
1199 }
1200
1201 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1202 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1203 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1204
1205 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1206 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1207 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1208 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1209 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1210 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1211 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1212
1213 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1214
1215 if (av_mod_uintp2(sps->width, sps->log2_min_cb_size) ||
1216 av_mod_uintp2(sps->height, sps->log2_min_cb_size)) {
1217 av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1218 return AVERROR_INVALIDDATA;
1219 }
1220
1221 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1222 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1223 sps->max_transform_hierarchy_depth_inter);
1224 return AVERROR_INVALIDDATA;
1225 }
1226 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1227 av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1228 sps->max_transform_hierarchy_depth_intra);
1229 return AVERROR_INVALIDDATA;
1230 }
1231 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1232 av_log(avctx, AV_LOG_ERROR,
1233 "max transform block size out of range: %d\n",
1234 sps->log2_max_trafo_size);
1235 return AVERROR_INVALIDDATA;
1236 }
1237
1238 if (get_bits_left(gb) < 0) {
1239 av_log(avctx, AV_LOG_ERROR,
1240 "Overread SPS by %d bits\n", -get_bits_left(gb));
1241 return AVERROR_INVALIDDATA;
1242 }
1243
1244 return 0;
1245 }
1246
ff_hevc_decode_nal_sps(GetBitContext * gb,AVCodecContext * avctx,HEVCParamSets * ps,int apply_defdispwin)1247 int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
1248 HEVCParamSets *ps, int apply_defdispwin)
1249 {
1250 HEVCSPS *sps;
1251 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
1252 unsigned int sps_id;
1253 int ret;
1254 ptrdiff_t nal_size;
1255
1256 if (!sps_buf)
1257 return AVERROR(ENOMEM);
1258 sps = (HEVCSPS*)sps_buf->data;
1259
1260 av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n");
1261
1262 nal_size = gb->buffer_end - gb->buffer;
1263 if (nal_size > sizeof(sps->data)) {
1264 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized SPS "
1265 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1266 nal_size, sizeof(sps->data));
1267 sps->data_size = sizeof(sps->data);
1268 } else {
1269 sps->data_size = nal_size;
1270 }
1271 memcpy(sps->data, gb->buffer, sps->data_size);
1272
1273 ret = ff_hevc_parse_sps(sps, gb, &sps_id,
1274 apply_defdispwin,
1275 ps->vps_list, avctx);
1276 if (ret < 0) {
1277 av_buffer_unref(&sps_buf);
1278 return ret;
1279 }
1280
1281 if (avctx->debug & FF_DEBUG_BITSTREAM) {
1282 av_log(avctx, AV_LOG_DEBUG,
1283 "Parsed SPS: id %d; coded wxh: %dx%d; "
1284 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1285 sps_id, sps->width, sps->height,
1286 sps->width - (sps->output_window.left_offset + sps->output_window.right_offset),
1287 sps->height - (sps->output_window.top_offset + sps->output_window.bottom_offset),
1288 av_get_pix_fmt_name(sps->pix_fmt));
1289 }
1290
1291 /* check if this is a repeat of an already parsed SPS, then keep the
1292 * original one.
1293 * otherwise drop all PPSes that depend on it */
1294 if (ps->sps_list[sps_id] &&
1295 !memcmp(ps->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1296 av_buffer_unref(&sps_buf);
1297 } else {
1298 remove_sps(ps, sps_id);
1299 ps->sps_list[sps_id] = sps_buf;
1300 }
1301
1302 return 0;
1303 }
1304
hevc_pps_free(void * opaque,uint8_t * data)1305 static void hevc_pps_free(void *opaque, uint8_t *data)
1306 {
1307 HEVCPPS *pps = (HEVCPPS*)data;
1308
1309 av_freep(&pps->column_width);
1310 av_freep(&pps->row_height);
1311 av_freep(&pps->col_bd);
1312 av_freep(&pps->row_bd);
1313 av_freep(&pps->col_idxX);
1314 av_freep(&pps->ctb_addr_rs_to_ts);
1315 av_freep(&pps->ctb_addr_ts_to_rs);
1316 av_freep(&pps->tile_pos_rs);
1317 av_freep(&pps->tile_id);
1318 av_freep(&pps->min_tb_addr_zs_tab);
1319
1320 av_freep(&pps);
1321 }
1322
pps_range_extensions(GetBitContext * gb,AVCodecContext * avctx,HEVCPPS * pps,HEVCSPS * sps)1323 static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx,
1324 HEVCPPS *pps, HEVCSPS *sps) {
1325 int i;
1326
1327 if (pps->transform_skip_enabled_flag) {
1328 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1329 }
1330 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1331 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1332 if (pps->chroma_qp_offset_list_enabled_flag) {
1333 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1334 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1335 if (pps->chroma_qp_offset_list_len_minus1 > 5) {
1336 av_log(avctx, AV_LOG_ERROR,
1337 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1338 return AVERROR_INVALIDDATA;
1339 }
1340 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1341 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1342 if (pps->cb_qp_offset_list[i]) {
1343 av_log(avctx, AV_LOG_WARNING,
1344 "cb_qp_offset_list not tested yet.\n");
1345 }
1346 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1347 if (pps->cr_qp_offset_list[i]) {
1348 av_log(avctx, AV_LOG_WARNING,
1349 "cb_qp_offset_list not tested yet.\n");
1350 }
1351 }
1352 }
1353 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1354 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1355
1356 if ( pps->log2_sao_offset_scale_luma > FFMAX(sps->bit_depth - 10, 0)
1357 || pps->log2_sao_offset_scale_chroma > FFMAX(sps->bit_depth_chroma - 10, 0)
1358 )
1359 return AVERROR_INVALIDDATA;
1360
1361 return(0);
1362 }
1363
setup_pps(AVCodecContext * avctx,GetBitContext * gb,HEVCPPS * pps,HEVCSPS * sps)1364 static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,
1365 HEVCPPS *pps, HEVCSPS *sps)
1366 {
1367 int log2_diff;
1368 int pic_area_in_ctbs;
1369 int i, j, x, y, ctb_addr_rs, tile_id;
1370
1371 // Inferred parameters
1372 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1373 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1374 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1375 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)
1376 return AVERROR(ENOMEM);
1377
1378 if (pps->uniform_spacing_flag) {
1379 if (!pps->column_width) {
1380 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1381 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1382 }
1383 if (!pps->column_width || !pps->row_height)
1384 return AVERROR(ENOMEM);
1385
1386 for (i = 0; i < pps->num_tile_columns; i++) {
1387 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1388 (i * sps->ctb_width) / pps->num_tile_columns;
1389 }
1390
1391 for (i = 0; i < pps->num_tile_rows; i++) {
1392 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1393 (i * sps->ctb_height) / pps->num_tile_rows;
1394 }
1395 }
1396
1397 pps->col_bd[0] = 0;
1398 for (i = 0; i < pps->num_tile_columns; i++)
1399 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1400
1401 pps->row_bd[0] = 0;
1402 for (i = 0; i < pps->num_tile_rows; i++)
1403 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1404
1405 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1406 if (i > pps->col_bd[j])
1407 j++;
1408 pps->col_idxX[i] = j;
1409 }
1410
1411 /**
1412 * 6.5
1413 */
1414 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1415
1416 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1417 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1418 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1419 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1420 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1421 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1422 return AVERROR(ENOMEM);
1423 }
1424
1425 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1426 int tb_x = ctb_addr_rs % sps->ctb_width;
1427 int tb_y = ctb_addr_rs / sps->ctb_width;
1428 int tile_x = 0;
1429 int tile_y = 0;
1430 int val = 0;
1431
1432 for (i = 0; i < pps->num_tile_columns; i++) {
1433 if (tb_x < pps->col_bd[i + 1]) {
1434 tile_x = i;
1435 break;
1436 }
1437 }
1438
1439 for (i = 0; i < pps->num_tile_rows; i++) {
1440 if (tb_y < pps->row_bd[i + 1]) {
1441 tile_y = i;
1442 break;
1443 }
1444 }
1445
1446 for (i = 0; i < tile_x; i++)
1447 val += pps->row_height[tile_y] * pps->column_width[i];
1448 for (i = 0; i < tile_y; i++)
1449 val += sps->ctb_width * pps->row_height[i];
1450
1451 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1452 tb_x - pps->col_bd[tile_x];
1453
1454 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1455 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1456 }
1457
1458 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1459 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1460 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1461 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1462 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1463
1464 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1465 if (!pps->tile_pos_rs)
1466 return AVERROR(ENOMEM);
1467
1468 for (j = 0; j < pps->num_tile_rows; j++)
1469 for (i = 0; i < pps->num_tile_columns; i++)
1470 pps->tile_pos_rs[j * pps->num_tile_columns + i] =
1471 pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1472
1473 log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;
1474 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1475 for (y = 0; y < sps->tb_mask+2; y++) {
1476 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1477 pps->min_tb_addr_zs_tab[y] = -1;
1478 }
1479 for (y = 0; y < sps->tb_mask+1; y++) {
1480 for (x = 0; x < sps->tb_mask+1; x++) {
1481 int tb_x = x >> log2_diff;
1482 int tb_y = y >> log2_diff;
1483 int rs = sps->ctb_width * tb_y + tb_x;
1484 int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);
1485 for (i = 0; i < log2_diff; i++) {
1486 int m = 1 << i;
1487 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1488 }
1489 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1490 }
1491 }
1492
1493 return 0;
1494 }
1495
ff_hevc_decode_nal_pps(GetBitContext * gb,AVCodecContext * avctx,HEVCParamSets * ps)1496 int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
1497 HEVCParamSets *ps)
1498 {
1499 HEVCSPS *sps = NULL;
1500 int i, ret = 0;
1501 unsigned int pps_id = 0;
1502 ptrdiff_t nal_size;
1503 unsigned log2_parallel_merge_level_minus2;
1504
1505 AVBufferRef *pps_buf;
1506 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1507
1508 if (!pps)
1509 return AVERROR(ENOMEM);
1510
1511 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1512 hevc_pps_free, NULL, 0);
1513 if (!pps_buf) {
1514 av_freep(&pps);
1515 return AVERROR(ENOMEM);
1516 }
1517
1518 av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1519
1520 nal_size = gb->buffer_end - gb->buffer;
1521 if (nal_size > sizeof(pps->data)) {
1522 av_log(avctx, AV_LOG_WARNING, "Truncating likely oversized PPS "
1523 "(%"PTRDIFF_SPECIFIER" > %"SIZE_SPECIFIER")\n",
1524 nal_size, sizeof(pps->data));
1525 pps->data_size = sizeof(pps->data);
1526 } else {
1527 pps->data_size = nal_size;
1528 }
1529 memcpy(pps->data, gb->buffer, pps->data_size);
1530
1531 // Default values
1532 pps->loop_filter_across_tiles_enabled_flag = 1;
1533 pps->num_tile_columns = 1;
1534 pps->num_tile_rows = 1;
1535 pps->uniform_spacing_flag = 1;
1536 pps->disable_dbf = 0;
1537 pps->beta_offset = 0;
1538 pps->tc_offset = 0;
1539 pps->log2_max_transform_skip_block_size = 2;
1540
1541 // Coded parameters
1542 pps_id = get_ue_golomb_long(gb);
1543 if (pps_id >= HEVC_MAX_PPS_COUNT) {
1544 av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1545 ret = AVERROR_INVALIDDATA;
1546 goto err;
1547 }
1548 pps->sps_id = get_ue_golomb_long(gb);
1549 if (pps->sps_id >= HEVC_MAX_SPS_COUNT) {
1550 av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1551 ret = AVERROR_INVALIDDATA;
1552 goto err;
1553 }
1554 if (!ps->sps_list[pps->sps_id]) {
1555 av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1556 ret = AVERROR_INVALIDDATA;
1557 goto err;
1558 }
1559 sps = (HEVCSPS *)ps->sps_list[pps->sps_id]->data;
1560
1561 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1562 pps->output_flag_present_flag = get_bits1(gb);
1563 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1564
1565 pps->sign_data_hiding_flag = get_bits1(gb);
1566
1567 pps->cabac_init_present_flag = get_bits1(gb);
1568
1569 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1570 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1571
1572 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1573
1574 pps->constrained_intra_pred_flag = get_bits1(gb);
1575 pps->transform_skip_enabled_flag = get_bits1(gb);
1576
1577 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1578 pps->diff_cu_qp_delta_depth = 0;
1579 if (pps->cu_qp_delta_enabled_flag)
1580 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1581
1582 if (pps->diff_cu_qp_delta_depth < 0 ||
1583 pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
1584 av_log(avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
1585 pps->diff_cu_qp_delta_depth);
1586 ret = AVERROR_INVALIDDATA;
1587 goto err;
1588 }
1589
1590 pps->cb_qp_offset = get_se_golomb(gb);
1591 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1592 av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1593 pps->cb_qp_offset);
1594 ret = AVERROR_INVALIDDATA;
1595 goto err;
1596 }
1597 pps->cr_qp_offset = get_se_golomb(gb);
1598 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1599 av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1600 pps->cr_qp_offset);
1601 ret = AVERROR_INVALIDDATA;
1602 goto err;
1603 }
1604 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1605
1606 pps->weighted_pred_flag = get_bits1(gb);
1607 pps->weighted_bipred_flag = get_bits1(gb);
1608
1609 pps->transquant_bypass_enable_flag = get_bits1(gb);
1610 pps->tiles_enabled_flag = get_bits1(gb);
1611 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1612
1613 if (pps->tiles_enabled_flag) {
1614 int num_tile_columns_minus1 = get_ue_golomb(gb);
1615 int num_tile_rows_minus1 = get_ue_golomb(gb);
1616
1617 if (num_tile_columns_minus1 < 0 ||
1618 num_tile_columns_minus1 >= sps->ctb_width) {
1619 av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1620 num_tile_columns_minus1);
1621 ret = num_tile_columns_minus1 < 0 ? num_tile_columns_minus1 : AVERROR_INVALIDDATA;
1622 goto err;
1623 }
1624 if (num_tile_rows_minus1 < 0 ||
1625 num_tile_rows_minus1 >= sps->ctb_height) {
1626 av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1627 num_tile_rows_minus1);
1628 ret = num_tile_rows_minus1 < 0 ? num_tile_rows_minus1 : AVERROR_INVALIDDATA;
1629 goto err;
1630 }
1631 pps->num_tile_columns = num_tile_columns_minus1 + 1;
1632 pps->num_tile_rows = num_tile_rows_minus1 + 1;
1633
1634 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1635 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1636 if (!pps->column_width || !pps->row_height) {
1637 ret = AVERROR(ENOMEM);
1638 goto err;
1639 }
1640
1641 pps->uniform_spacing_flag = get_bits1(gb);
1642 if (!pps->uniform_spacing_flag) {
1643 uint64_t sum = 0;
1644 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1645 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1646 sum += pps->column_width[i];
1647 }
1648 if (sum >= sps->ctb_width) {
1649 av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1650 ret = AVERROR_INVALIDDATA;
1651 goto err;
1652 }
1653 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1654
1655 sum = 0;
1656 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1657 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1658 sum += pps->row_height[i];
1659 }
1660 if (sum >= sps->ctb_height) {
1661 av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1662 ret = AVERROR_INVALIDDATA;
1663 goto err;
1664 }
1665 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1666 }
1667 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1668 }
1669
1670 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1671
1672 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1673 if (pps->deblocking_filter_control_present_flag) {
1674 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1675 pps->disable_dbf = get_bits1(gb);
1676 if (!pps->disable_dbf) {
1677 int beta_offset_div2 = get_se_golomb(gb);
1678 int tc_offset_div2 = get_se_golomb(gb) ;
1679 if (beta_offset_div2 < -6 || beta_offset_div2 > 6) {
1680 av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1681 beta_offset_div2);
1682 ret = AVERROR_INVALIDDATA;
1683 goto err;
1684 }
1685 if (tc_offset_div2 < -6 || tc_offset_div2 > 6) {
1686 av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1687 tc_offset_div2);
1688 ret = AVERROR_INVALIDDATA;
1689 goto err;
1690 }
1691 pps->beta_offset = 2 * beta_offset_div2;
1692 pps->tc_offset = 2 * tc_offset_div2;
1693 }
1694 }
1695
1696 pps->scaling_list_data_present_flag = get_bits1(gb);
1697 if (pps->scaling_list_data_present_flag) {
1698 set_default_scaling_list_data(&pps->scaling_list);
1699 ret = scaling_list_data(gb, avctx, &pps->scaling_list, sps);
1700 if (ret < 0)
1701 goto err;
1702 }
1703 pps->lists_modification_present_flag = get_bits1(gb);
1704 log2_parallel_merge_level_minus2 = get_ue_golomb_long(gb);
1705 if (log2_parallel_merge_level_minus2 > sps->log2_ctb_size) {
1706 av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1707 log2_parallel_merge_level_minus2);
1708 ret = AVERROR_INVALIDDATA;
1709 goto err;
1710 }
1711 pps->log2_parallel_merge_level = log2_parallel_merge_level_minus2 + 2;
1712
1713 pps->slice_header_extension_present_flag = get_bits1(gb);
1714
1715 if (get_bits1(gb)) { // pps_extension_present_flag
1716 pps->pps_range_extensions_flag = get_bits1(gb);
1717 skip_bits(gb, 7); // pps_extension_7bits
1718 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps->pps_range_extensions_flag) {
1719 if ((ret = pps_range_extensions(gb, avctx, pps, sps)) < 0)
1720 goto err;
1721 }
1722 }
1723
1724 ret = setup_pps(avctx, gb, pps, sps);
1725 if (ret < 0)
1726 goto err;
1727
1728 if (get_bits_left(gb) < 0) {
1729 av_log(avctx, AV_LOG_ERROR,
1730 "Overread PPS by %d bits\n", -get_bits_left(gb));
1731 goto err;
1732 }
1733
1734 remove_pps(ps, pps_id);
1735 ps->pps_list[pps_id] = pps_buf;
1736
1737 return 0;
1738
1739 err:
1740 av_buffer_unref(&pps_buf);
1741 return ret;
1742 }
1743
ff_hevc_ps_uninit(HEVCParamSets * ps)1744 void ff_hevc_ps_uninit(HEVCParamSets *ps)
1745 {
1746 int i;
1747
1748 for (i = 0; i < FF_ARRAY_ELEMS(ps->vps_list); i++)
1749 av_buffer_unref(&ps->vps_list[i]);
1750 for (i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++)
1751 av_buffer_unref(&ps->sps_list[i]);
1752 for (i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++)
1753 av_buffer_unref(&ps->pps_list[i]);
1754
1755 ps->sps = NULL;
1756 ps->pps = NULL;
1757 ps->vps = NULL;
1758 }
1759
ff_hevc_compute_poc(const HEVCSPS * sps,int pocTid0,int poc_lsb,int nal_unit_type)1760 int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type)
1761 {
1762 int max_poc_lsb = 1 << sps->log2_max_poc_lsb;
1763 int prev_poc_lsb = pocTid0 % max_poc_lsb;
1764 int prev_poc_msb = pocTid0 - prev_poc_lsb;
1765 int poc_msb;
1766
1767 if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2)
1768 poc_msb = prev_poc_msb + max_poc_lsb;
1769 else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2)
1770 poc_msb = prev_poc_msb - max_poc_lsb;
1771 else
1772 poc_msb = prev_poc_msb;
1773
1774 // For BLA picture types, POCmsb is set to 0.
1775 if (nal_unit_type == HEVC_NAL_BLA_W_LP ||
1776 nal_unit_type == HEVC_NAL_BLA_W_RADL ||
1777 nal_unit_type == HEVC_NAL_BLA_N_LP)
1778 poc_msb = 0;
1779
1780 return poc_msb + poc_lsb;
1781 }
1782