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Imported Debian version 2.4.3~trusty1
[deb_ffmpeg.git] / ffmpeg / libavcodec / hevc_ps.c
CommitLineData
2ba45a60
DM		 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.h"
29
30static const uint8_t default_scaling_list_intra[] = {
31 16, 16, 16, 16, 17, 18, 21, 24,
32 16, 16, 16, 16, 17, 19, 22, 25,
33 16, 16, 17, 18, 20, 22, 25, 29,
34 16, 16, 18, 21, 24, 27, 31, 36,
35 17, 17, 20, 24, 30, 35, 41, 47,
36 18, 19, 22, 27, 35, 44, 54, 65,
37 21, 22, 25, 31, 41, 54, 70, 88,
38 24, 25, 29, 36, 47, 65, 88, 115
39};
40
41static const uint8_t default_scaling_list_inter[] = {
42 16, 16, 16, 16, 17, 18, 20, 24,
43 16, 16, 16, 17, 18, 20, 24, 25,
44 16, 16, 17, 18, 20, 24, 25, 28,
45 16, 17, 18, 20, 24, 25, 28, 33,
46 17, 18, 20, 24, 25, 28, 33, 41,
47 18, 20, 24, 25, 28, 33, 41, 54,
48 20, 24, 25, 28, 33, 41, 54, 71,
49 24, 25, 28, 33, 41, 54, 71, 91
50};
51
52static const AVRational vui_sar[] = {
53 { 0, 1 },
54 { 1, 1 },
55 { 12, 11 },
56 { 10, 11 },
57 { 16, 11 },
58 { 40, 33 },
59 { 24, 11 },
60 { 20, 11 },
61 { 32, 11 },
62 { 80, 33 },
63 { 18, 11 },
64 { 15, 11 },
65 { 64, 33 },
66 { 160, 99 },
67 { 4, 3 },
68 { 3, 2 },
69 { 2, 1 },
70};
71
72int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,
73 const HEVCSPS *sps, int is_slice_header)
74{
75 HEVCLocalContext *lc = s->HEVClc;
76 uint8_t rps_predict = 0;
77 int delta_poc;
78 int k0 = 0;
79 int k1 = 0;
80 int k = 0;
81 int i;
82
83 GetBitContext *gb = &lc->gb;
84
85 if (rps != sps->st_rps && sps->nb_st_rps)
86 rps_predict = get_bits1(gb);
87
88 if (rps_predict) {
89 const ShortTermRPS *rps_ridx;
90 int delta_rps;
91 unsigned abs_delta_rps;
92 uint8_t use_delta_flag = 0;
93 uint8_t delta_rps_sign;
94
95 if (is_slice_header) {
96 unsigned int delta_idx = get_ue_golomb_long(gb) + 1;
97 if (delta_idx > sps->nb_st_rps) {
98 av_log(s->avctx, AV_LOG_ERROR,
99 "Invalid value of delta_idx in slice header RPS: %d > %d.\n",
100 delta_idx, sps->nb_st_rps);
101 return AVERROR_INVALIDDATA;
102 }
103 rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];
104 } else
105 rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
106
107 delta_rps_sign = get_bits1(gb);
108 abs_delta_rps = get_ue_golomb_long(gb) + 1;
109 if (abs_delta_rps < 1 || abs_delta_rps > 32768) {
110 av_log(s->avctx, AV_LOG_ERROR,
111 "Invalid value of abs_delta_rps: %d\n",
112 abs_delta_rps);
113 return AVERROR_INVALIDDATA;
114 }
115 delta_rps = (1 - (delta_rps_sign << 1)) * abs_delta_rps;
116 for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
117 int used = rps->used[k] = get_bits1(gb);
118
119 if (!used)
120 use_delta_flag = get_bits1(gb);
121
122 if (used || use_delta_flag) {
123 if (i < rps_ridx->num_delta_pocs)
124 delta_poc = delta_rps + rps_ridx->delta_poc[i];
125 else
126 delta_poc = delta_rps;
127 rps->delta_poc[k] = delta_poc;
128 if (delta_poc < 0)
129 k0++;
130 else
131 k1++;
132 k++;
133 }
134 }
135
136 rps->num_delta_pocs = k;
137 rps->num_negative_pics = k0;
138 // sort in increasing order (smallest first)
139 if (rps->num_delta_pocs != 0) {
140 int used, tmp;
141 for (i = 1; i < rps->num_delta_pocs; i++) {
142 delta_poc = rps->delta_poc[i];
143 used = rps->used[i];
144 for (k = i - 1; k >= 0; k--) {
145 tmp = rps->delta_poc[k];
146 if (delta_poc < tmp) {
147 rps->delta_poc[k + 1] = tmp;
148 rps->used[k + 1] = rps->used[k];
149 rps->delta_poc[k] = delta_poc;
150 rps->used[k] = used;
151 }
152 }
153 }
154 }
155 if ((rps->num_negative_pics >> 1) != 0) {
156 int used;
157 k = rps->num_negative_pics - 1;
158 // flip the negative values to largest first
159 for (i = 0; i < rps->num_negative_pics >> 1; i++) {
160 delta_poc = rps->delta_poc[i];
161 used = rps->used[i];
162 rps->delta_poc[i] = rps->delta_poc[k];
163 rps->used[i] = rps->used[k];
164 rps->delta_poc[k] = delta_poc;
165 rps->used[k] = used;
166 k--;
167 }
168 }
169 } else {
170 unsigned int prev, nb_positive_pics;
171 rps->num_negative_pics = get_ue_golomb_long(gb);
172 nb_positive_pics = get_ue_golomb_long(gb);
173
174 if (rps->num_negative_pics >= MAX_REFS ||
175 nb_positive_pics >= MAX_REFS) {
176 av_log(s->avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
177 return AVERROR_INVALIDDATA;
178 }
179
180 rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
181 if (rps->num_delta_pocs) {
182 prev = 0;
183 for (i = 0; i < rps->num_negative_pics; i++) {
184 delta_poc = get_ue_golomb_long(gb) + 1;
185 prev -= delta_poc;
186 rps->delta_poc[i] = prev;
187 rps->used[i] = get_bits1(gb);
188 }
189 prev = 0;
190 for (i = 0; i < nb_positive_pics; i++) {
191 delta_poc = get_ue_golomb_long(gb) + 1;
192 prev += delta_poc;
193 rps->delta_poc[rps->num_negative_pics + i] = prev;
194 rps->used[rps->num_negative_pics + i] = get_bits1(gb);
195 }
196 }
197 }
198 return 0;
199}
200
201
202static int decode_profile_tier_level(HEVCContext *s, PTLCommon *ptl)
203{
204 int i;
205 HEVCLocalContext *lc = s->HEVClc;
206 GetBitContext *gb = &lc->gb;
207
208 if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 16 + 16 + 12)
209 return -1;
210
211 ptl->profile_space = get_bits(gb, 2);
212 ptl->tier_flag = get_bits1(gb);
213 ptl->profile_idc = get_bits(gb, 5);
214 if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)
215 av_log(s->avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
216 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)
217 av_log(s->avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
218 else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)
219 av_log(s->avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
220 else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)
221 av_log(s->avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
222 else
223 av_log(s->avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
224
225 for (i = 0; i < 32; i++)
226 ptl->profile_compatibility_flag[i] = get_bits1(gb);
227 ptl->progressive_source_flag = get_bits1(gb);
228 ptl->interlaced_source_flag = get_bits1(gb);
229 ptl->non_packed_constraint_flag = get_bits1(gb);
230 ptl->frame_only_constraint_flag = get_bits1(gb);
231
232 skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]
233 skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]
234 skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]
235
236 return 0;
237}
238
239static int parse_ptl(HEVCContext *s, PTL *ptl, int max_num_sub_layers)
240{
241 int i;
242 HEVCLocalContext *lc = s->HEVClc;
243 GetBitContext *gb = &lc->gb;
244 if (decode_profile_tier_level(s, &ptl->general_ptl) < 0 ||
245 get_bits_left(gb) < 8 + 8*2) {
246 av_log(s->avctx, AV_LOG_ERROR, "PTL information too short\n");
247 return -1;
248 }
249
250 ptl->general_ptl.level_idc = get_bits(gb, 8);
251
252 for (i = 0; i < max_num_sub_layers - 1; i++) {
253 ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
254 ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
255 }
256
257 if (max_num_sub_layers - 1> 0)
258 for (i = max_num_sub_layers - 1; i < 8; i++)
259 skip_bits(gb, 2); // reserved_zero_2bits[i]
260 for (i = 0; i < max_num_sub_layers - 1; i++) {
261 if (ptl->sub_layer_profile_present_flag[i] &&
262 decode_profile_tier_level(s, &ptl->sub_layer_ptl[i]) < 0) {
263 av_log(s->avctx, AV_LOG_ERROR,
264 "PTL information for sublayer %i too short\n", i);
265 return -1;
266 }
267 if (ptl->sub_layer_level_present_flag[i]) {
268 if (get_bits_left(gb) < 8) {
269 av_log(s->avctx, AV_LOG_ERROR,
270 "Not enough data for sublayer %i level_idc\n", i);
271 return -1;
272 } else
273 ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
274 }
275 }
276
277 return 0;
278}
279
280static void decode_sublayer_hrd(HEVCContext *s, unsigned int nb_cpb,
281 int subpic_params_present)
282{
283 GetBitContext *gb = &s->HEVClc->gb;
284 int i;
285
286 for (i = 0; i < nb_cpb; i++) {
287 get_ue_golomb_long(gb); // bit_rate_value_minus1
288 get_ue_golomb_long(gb); // cpb_size_value_minus1
289
290 if (subpic_params_present) {
291 get_ue_golomb_long(gb); // cpb_size_du_value_minus1
292 get_ue_golomb_long(gb); // bit_rate_du_value_minus1
293 }
294 skip_bits1(gb); // cbr_flag
295 }
296}
297
298static int decode_hrd(HEVCContext *s, int common_inf_present,
299 int max_sublayers)
300{
301 GetBitContext *gb = &s->HEVClc->gb;
302 int nal_params_present = 0, vcl_params_present = 0;
303 int subpic_params_present = 0;
304 int i;
305
306 if (common_inf_present) {
307 nal_params_present = get_bits1(gb);
308 vcl_params_present = get_bits1(gb);
309
310 if (nal_params_present || vcl_params_present) {
311 subpic_params_present = get_bits1(gb);
312
313 if (subpic_params_present) {
314 skip_bits(gb, 8); // tick_divisor_minus2
315 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
316 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
317 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
318 }
319
320 skip_bits(gb, 4); // bit_rate_scale
321 skip_bits(gb, 4); // cpb_size_scale
322
323 if (subpic_params_present)
324 skip_bits(gb, 4); // cpb_size_du_scale
325
326 skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
327 skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
328 skip_bits(gb, 5); // dpb_output_delay_length_minus1
329 }
330 }
331
332 for (i = 0; i < max_sublayers; i++) {
333 int low_delay = 0;
334 unsigned int nb_cpb = 1;
335 int fixed_rate = get_bits1(gb);
336
337 if (!fixed_rate)
338 fixed_rate = get_bits1(gb);
339
340 if (fixed_rate)
341 get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
342 else
343 low_delay = get_bits1(gb);
344
345 if (!low_delay) {
346 nb_cpb = get_ue_golomb_long(gb) + 1;
347 if (nb_cpb < 1 || nb_cpb > 32) {
348 av_log(s->avctx, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);
349 return AVERROR_INVALIDDATA;
350 }
351 }
352
353 if (nal_params_present)
354 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
355 if (vcl_params_present)
356 decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
357 }
358 return 0;
359}
360
361int ff_hevc_decode_nal_vps(HEVCContext *s)
362{
363 int i,j;
364 GetBitContext *gb = &s->HEVClc->gb;
365 int vps_id = 0;
366 HEVCVPS *vps;
367 AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));
368
369 if (!vps_buf)
370 return AVERROR(ENOMEM);
371 vps = (HEVCVPS*)vps_buf->data;
372
373 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");
374
375 vps_id = get_bits(gb, 4);
376 if (vps_id >= MAX_VPS_COUNT) {
377 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
378 goto err;
379 }
380
381 if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
382 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
383 goto err;
384 }
385
386 vps->vps_max_layers = get_bits(gb, 6) + 1;
387 vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
388 vps->vps_temporal_id_nesting_flag = get_bits1(gb);
389
390 if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
391 av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
392 goto err;
393 }
394
395 if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {
396 av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
397 vps->vps_max_sub_layers);
398 goto err;
399 }
400
401 if (parse_ptl(s, &vps->ptl, vps->vps_max_sub_layers) < 0)
402 goto err;
403
404 vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
405
406 i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
407 for (; i < vps->vps_max_sub_layers; i++) {
408 vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
409 vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
410 vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
411
412 if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
413 av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
414 vps->vps_max_dec_pic_buffering[i] - 1);
415 goto err;
416 }
417 if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
418 av_log(s->avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
419 vps->vps_num_reorder_pics[i]);
420 if (s->avctx->err_recognition & AV_EF_EXPLODE)
421 goto err;
422 }
423 }
424
425 vps->vps_max_layer_id = get_bits(gb, 6);
426 vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
427 if ((vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
428 av_log(s->avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
429 goto err;
430 }
431
432 for (i = 1; i < vps->vps_num_layer_sets; i++)
433 for (j = 0; j <= vps->vps_max_layer_id; j++)
434 skip_bits(gb, 1); // layer_id_included_flag[i][j]
435
436 vps->vps_timing_info_present_flag = get_bits1(gb);
437 if (vps->vps_timing_info_present_flag) {
438 vps->vps_num_units_in_tick = get_bits_long(gb, 32);
439 vps->vps_time_scale = get_bits_long(gb, 32);
440 vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
441 if (vps->vps_poc_proportional_to_timing_flag)
442 vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
443 vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
444 for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
445 int common_inf_present = 1;
446
447 get_ue_golomb_long(gb); // hrd_layer_set_idx
448 if (i)
449 common_inf_present = get_bits1(gb);
450 decode_hrd(s, common_inf_present, vps->vps_max_sub_layers);
451 }
452 }
453 get_bits1(gb); /* vps_extension_flag */
454
455 if (get_bits_left(gb) < 0) {
456 av_log(s->avctx, AV_LOG_ERROR,
457 "Overread VPS by %d bits\n", -get_bits_left(gb));
458 goto err;
459 }
460
461 av_buffer_unref(&s->vps_list[vps_id]);
462 s->vps_list[vps_id] = vps_buf;
463 return 0;
464
465err:
466 av_buffer_unref(&vps_buf);
467 return AVERROR_INVALIDDATA;
468}
469
470static void decode_vui(HEVCContext *s, HEVCSPS *sps)
471{
472 VUI *vui = &sps->vui;
473 GetBitContext *gb = &s->HEVClc->gb;
474 GetBitContext backup;
475 int sar_present, alt = 0;
476
477 av_log(s->avctx, AV_LOG_DEBUG, "Decoding VUI\n");
478
479 sar_present = get_bits1(gb);
480 if (sar_present) {
481 uint8_t sar_idx = get_bits(gb, 8);
482 if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
483 vui->sar = vui_sar[sar_idx];
484 else if (sar_idx == 255) {
485 vui->sar.num = get_bits(gb, 16);
486 vui->sar.den = get_bits(gb, 16);
487 } else
488 av_log(s->avctx, AV_LOG_WARNING,
489 "Unknown SAR index: %u.\n", sar_idx);
490 }
491
492 vui->overscan_info_present_flag = get_bits1(gb);
493 if (vui->overscan_info_present_flag)
494 vui->overscan_appropriate_flag = get_bits1(gb);
495
496 vui->video_signal_type_present_flag = get_bits1(gb);
497 if (vui->video_signal_type_present_flag) {
498 vui->video_format = get_bits(gb, 3);
499 vui->video_full_range_flag = get_bits1(gb);
500 vui->colour_description_present_flag = get_bits1(gb);
501 if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
502 sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
503 if (vui->colour_description_present_flag) {
504 vui->colour_primaries = get_bits(gb, 8);
505 vui->transfer_characteristic = get_bits(gb, 8);
506 vui->matrix_coeffs = get_bits(gb, 8);
507
508 // Set invalid values to "unspecified"
509 if (vui->colour_primaries >= AVCOL_PRI_NB)
510 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;
511 if (vui->transfer_characteristic >= AVCOL_TRC_NB)
512 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;
513 if (vui->matrix_coeffs >= AVCOL_SPC_NB)
514 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;
515 }
516 }
517
518 vui->chroma_loc_info_present_flag = get_bits1(gb);
519 if (vui->chroma_loc_info_present_flag) {
520 vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
521 vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
522 }
523
524 vui->neutra_chroma_indication_flag = get_bits1(gb);
525 vui->field_seq_flag = get_bits1(gb);
526 vui->frame_field_info_present_flag = get_bits1(gb);
527
528 if (get_bits_left(gb) >= 68 && show_bits_long(gb, 21) == 0x100000) {
529 vui->default_display_window_flag = 0;
530 av_log(s->avctx, AV_LOG_WARNING, "Invalid default display window\n");
531 } else
532 vui->default_display_window_flag = get_bits1(gb);
533 // Backup context in case an alternate header is detected
534 memcpy(&backup, gb, sizeof(backup));
535
536 if (vui->default_display_window_flag) {
537 //TODO: * 2 is only valid for 420
538 vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * 2;
539 vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * 2;
540 vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * 2;
541 vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;
542
543 if (s->apply_defdispwin &&
544 s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
545 av_log(s->avctx, AV_LOG_DEBUG,
546 "discarding vui default display window, "
547 "original values are l:%u r:%u t:%u b:%u\n",
548 vui->def_disp_win.left_offset,
549 vui->def_disp_win.right_offset,
550 vui->def_disp_win.top_offset,
551 vui->def_disp_win.bottom_offset);
552
553 vui->def_disp_win.left_offset =
554 vui->def_disp_win.right_offset =
555 vui->def_disp_win.top_offset =
556 vui->def_disp_win.bottom_offset = 0;
557 }
558 }
559
560 vui->vui_timing_info_present_flag = get_bits1(gb);
561
562 if (vui->vui_timing_info_present_flag) {
563 if( get_bits_left(gb) < 66) {
564 // The alternate syntax seem to have timing info located
565 // at where def_disp_win is normally located
566 av_log(s->avctx, AV_LOG_WARNING,
567 "Strange VUI timing information, retrying...\n");
568 vui->default_display_window_flag = 0;
569 memset(&vui->def_disp_win, 0, sizeof(vui->def_disp_win));
570 memcpy(gb, &backup, sizeof(backup));
571 alt = 1;
572 }
573 vui->vui_num_units_in_tick = get_bits_long(gb, 32);
574 vui->vui_time_scale = get_bits_long(gb, 32);
575 if (alt) {
576 av_log(s->avctx, AV_LOG_INFO, "Retry got %i/%i fps\n",
577 vui->vui_time_scale, vui->vui_num_units_in_tick);
578 }
579 vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
580 if (vui->vui_poc_proportional_to_timing_flag)
581 vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
582 vui->vui_hrd_parameters_present_flag = get_bits1(gb);
583 if (vui->vui_hrd_parameters_present_flag)
584 decode_hrd(s, 1, sps->max_sub_layers);
585 }
586
587 vui->bitstream_restriction_flag = get_bits1(gb);
588 if (vui->bitstream_restriction_flag) {
589 vui->tiles_fixed_structure_flag = get_bits1(gb);
590 vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
591 vui->restricted_ref_pic_lists_flag = get_bits1(gb);
592 vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
593 vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
594 vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
595 vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
596 vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
597 }
598}
599
600static void set_default_scaling_list_data(ScalingList *sl)
601{
602 int matrixId;
603
604 for (matrixId = 0; matrixId < 6; matrixId++) {
605 // 4x4 default is 16
606 memset(sl->sl[0][matrixId], 16, 16);
607 sl->sl_dc[0][matrixId] = 16; // default for 16x16
608 sl->sl_dc[1][matrixId] = 16; // default for 32x32
609 }
610 memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
611 memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
612 memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
613 memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
614 memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
615 memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
616 memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
617 memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
618 memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
619 memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
620 memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
621 memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
622 memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
623 memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
624 memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
625 memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
626 memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
627 memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
628}
629
630static int scaling_list_data(HEVCContext *s, ScalingList *sl, HEVCSPS *sps)
631{
632 GetBitContext *gb = &s->HEVClc->gb;
633 uint8_t scaling_list_pred_mode_flag;
634 int32_t scaling_list_dc_coef[2][6];
635 int size_id, matrix_id, pos;
636 int i;
637
638 for (size_id = 0; size_id < 4; size_id++)
639 for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
640 scaling_list_pred_mode_flag = get_bits1(gb);
641 if (!scaling_list_pred_mode_flag) {
642 unsigned int delta = get_ue_golomb_long(gb);
643 /* Only need to handle non-zero delta. Zero means default,
644 * which should already be in the arrays. */
645 if (delta) {
646 // Copy from previous array.
647 if (matrix_id < delta) {
648 av_log(s->avctx, AV_LOG_ERROR,
649 "Invalid delta in scaling list data: %d.\n", delta);
650 return AVERROR_INVALIDDATA;
651 }
652
653 memcpy(sl->sl[size_id][matrix_id],
654 sl->sl[size_id][matrix_id - delta],
655 size_id > 0 ? 64 : 16);
656 if (size_id > 1)
657 sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
658 }
659 } else {
660 int next_coef, coef_num;
661 int32_t scaling_list_delta_coef;
662
663 next_coef = 8;
664 coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
665 if (size_id > 1) {
666 scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
667 next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
668 sl->sl_dc[size_id - 2][matrix_id] = next_coef;
669 }
670 for (i = 0; i < coef_num; i++) {
671 if (size_id == 0)
672 pos = 4 * ff_hevc_diag_scan4x4_y[i] +
673 ff_hevc_diag_scan4x4_x[i];
674 else
675 pos = 8 * ff_hevc_diag_scan8x8_y[i] +
676 ff_hevc_diag_scan8x8_x[i];
677
678 scaling_list_delta_coef = get_se_golomb(gb);
679 next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;
680 sl->sl[size_id][matrix_id][pos] = next_coef;
681 }
682 }
683 }
684
685 if (sps->chroma_format_idc == 3) {
686 for (i = 0; i < 64; i++) {
687 sl->sl[3][1][i] = sl->sl[2][1][i];
688 sl->sl[3][2][i] = sl->sl[2][2][i];
689 sl->sl[3][4][i] = sl->sl[2][4][i];
690 sl->sl[3][5][i] = sl->sl[2][5][i];
691 }
692 sl->sl_dc[1][1] = sl->sl_dc[0][1];
693 sl->sl_dc[1][2] = sl->sl_dc[0][2];
694 sl->sl_dc[1][4] = sl->sl_dc[0][4];
695 sl->sl_dc[1][5] = sl->sl_dc[0][5];
696 }
697
698
699 return 0;
700}
701
702int ff_hevc_decode_nal_sps(HEVCContext *s)
703{
704 const AVPixFmtDescriptor *desc;
705 GetBitContext *gb = &s->HEVClc->gb;
706 int ret = 0;
707 unsigned int sps_id = 0;
708 int log2_diff_max_min_transform_block_size;
709 int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
710 int i;
711
712 HEVCSPS *sps;
713 AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
714
715 if (!sps_buf)
716 return AVERROR(ENOMEM);
717 sps = (HEVCSPS*)sps_buf->data;
718
719 av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");
720
721 // Coded parameters
722
723 sps->vps_id = get_bits(gb, 4);
724 if (sps->vps_id >= MAX_VPS_COUNT) {
725 av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
726 ret = AVERROR_INVALIDDATA;
727 goto err;
728 }
729
730 if (!s->vps_list[sps->vps_id]) {
731 av_log(s->avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
732 sps->vps_id);
733 ret = AVERROR_INVALIDDATA;
734 goto err;
735 }
736
737 sps->max_sub_layers = get_bits(gb, 3) + 1;
738 if (sps->max_sub_layers > MAX_SUB_LAYERS) {
739 av_log(s->avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
740 sps->max_sub_layers);
741 ret = AVERROR_INVALIDDATA;
742 goto err;
743 }
744
745 skip_bits1(gb); // temporal_id_nesting_flag
746
747 if (parse_ptl(s, &sps->ptl, sps->max_sub_layers) < 0)
748 goto err;
749
750 sps_id = get_ue_golomb_long(gb);
751 if (sps_id >= MAX_SPS_COUNT) {
752 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);
753 ret = AVERROR_INVALIDDATA;
754 goto err;
755 }
756
757 sps->chroma_format_idc = get_ue_golomb_long(gb);
758 if (!(sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2 || sps->chroma_format_idc == 3)) {
759 avpriv_report_missing_feature(s->avctx, "chroma_format_idc != {1, 2, 3}\n");
760 ret = AVERROR_PATCHWELCOME;
761 goto err;
762 }
763
764 if (sps->chroma_format_idc == 3)
765 sps->separate_colour_plane_flag = get_bits1(gb);
766
767 if (sps->separate_colour_plane_flag)
768 sps->chroma_format_idc = 0;
769
770 sps->width = get_ue_golomb_long(gb);
771 sps->height = get_ue_golomb_long(gb);
772 if ((ret = av_image_check_size(sps->width,
773 sps->height, 0, s->avctx)) < 0)
774 goto err;
775
776 if (get_bits1(gb)) { // pic_conformance_flag
777 //TODO: * 2 is only valid for 420
778 sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * 2;
779 sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * 2;
780 sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * 2;
781 sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;
782
783 if (s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
784 av_log(s->avctx, AV_LOG_DEBUG,
785 "discarding sps conformance window, "
786 "original values are l:%u r:%u t:%u b:%u\n",
787 sps->pic_conf_win.left_offset,
788 sps->pic_conf_win.right_offset,
789 sps->pic_conf_win.top_offset,
790 sps->pic_conf_win.bottom_offset);
791
792 sps->pic_conf_win.left_offset =
793 sps->pic_conf_win.right_offset =
794 sps->pic_conf_win.top_offset =
795 sps->pic_conf_win.bottom_offset = 0;
796 }
797 sps->output_window = sps->pic_conf_win;
798 }
799
800 sps->bit_depth = get_ue_golomb_long(gb) + 8;
801 bit_depth_chroma = get_ue_golomb_long(gb) + 8;
802 if (bit_depth_chroma != sps->bit_depth) {
803 av_log(s->avctx, AV_LOG_ERROR,
804 "Luma bit depth (%d) is different from chroma bit depth (%d), "
805 "this is unsupported.\n",
806 sps->bit_depth, bit_depth_chroma);
807 ret = AVERROR_INVALIDDATA;
808 goto err;
809 }
810
811 switch (sps->bit_depth) {
812 case 8:
813 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
814 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
815 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
816 break;
817 case 9:
818 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
819 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
820 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
821 break;
822 case 10:
823 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
824 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
825 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
826 break;
827 case 12:
828 if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
829 if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
830 if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
831 break;
832 default:
833 av_log(s->avctx, AV_LOG_ERROR,
834 "4:2:0, 4:2:2, 4:4:4 supports are currently specified for 8, 10 and 12 bits.\n");
835 ret = AVERROR_PATCHWELCOME;
836 goto err;
837 }
838
839 desc = av_pix_fmt_desc_get(sps->pix_fmt);
840 if (!desc) {
841 ret = AVERROR(EINVAL);
842 goto err;
843 }
844
845 sps->hshift[0] = sps->vshift[0] = 0;
846 sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
847 sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
848
849 sps->pixel_shift = sps->bit_depth > 8;
850
851 sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
852 if (sps->log2_max_poc_lsb > 16) {
853 av_log(s->avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
854 sps->log2_max_poc_lsb - 4);
855 ret = AVERROR_INVALIDDATA;
856 goto err;
857 }
858
859 sublayer_ordering_info = get_bits1(gb);
860 start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
861 for (i = start; i < sps->max_sub_layers; i++) {
862 sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
863 sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
864 sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
865 if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
866 av_log(s->avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
867 sps->temporal_layer[i].max_dec_pic_buffering - 1);
868 ret = AVERROR_INVALIDDATA;
869 goto err;
870 }
871 if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
872 av_log(s->avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
873 sps->temporal_layer[i].num_reorder_pics);
874 if (s->avctx->err_recognition & AV_EF_EXPLODE ||
875 sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {
876 ret = AVERROR_INVALIDDATA;
877 goto err;
878 }
879 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
880 }
881 }
882
883 if (!sublayer_ordering_info) {
884 for (i = 0; i < start; i++) {
885 sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
886 sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
887 sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
888 }
889 }
890
891 sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
892 sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
893 sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
894 log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
895 sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size +
896 sps->log2_min_tb_size;
897
898 if (sps->log2_min_tb_size >= sps->log2_min_cb_size) {
899 av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
900 ret = AVERROR_INVALIDDATA;
901 goto err;
902 }
903 sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
904 sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
905
906 sps->scaling_list_enable_flag = get_bits1(gb);
907 if (sps->scaling_list_enable_flag) {
908 set_default_scaling_list_data(&sps->scaling_list);
909
910 if (get_bits1(gb)) {
911 ret = scaling_list_data(s, &sps->scaling_list, sps);
912 if (ret < 0)
913 goto err;
914 }
915 }
916
917 sps->amp_enabled_flag = get_bits1(gb);
918 sps->sao_enabled = get_bits1(gb);
919
920 sps->pcm_enabled_flag = get_bits1(gb);
921 if (sps->pcm_enabled_flag) {
922 sps->pcm.bit_depth = get_bits(gb, 4) + 1;
923 sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
924 sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
925 sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
926 get_ue_golomb_long(gb);
927 if (sps->pcm.bit_depth > sps->bit_depth) {
928 av_log(s->avctx, AV_LOG_ERROR,
929 "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
930 sps->pcm.bit_depth, sps->bit_depth);
931 ret = AVERROR_INVALIDDATA;
932 goto err;
933 }
934
935 sps->pcm.loop_filter_disable_flag = get_bits1(gb);
936 }
937
938 sps->nb_st_rps = get_ue_golomb_long(gb);
939 if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {
940 av_log(s->avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
941 sps->nb_st_rps);
942 ret = AVERROR_INVALIDDATA;
943 goto err;
944 }
945 for (i = 0; i < sps->nb_st_rps; i++) {
946 if ((ret = ff_hevc_decode_short_term_rps(s, &sps->st_rps[i],
947 sps, 0)) < 0)
948 goto err;
949 }
950
951 sps->long_term_ref_pics_present_flag = get_bits1(gb);
952 if (sps->long_term_ref_pics_present_flag) {
953 sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
954 for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
955 sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
956 sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
957 }
958 }
959
960 sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
961 sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
962 sps->vui.sar = (AVRational){0, 1};
963 vui_present = get_bits1(gb);
964 if (vui_present)
965 decode_vui(s, sps);
966
967 if (get_bits1(gb)) { // sps_extension_flag
968 int sps_extension_flag[1];
969 for (i = 0; i < 1; i++)
970 sps_extension_flag[i] = get_bits1(gb);
971 skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);
972 if (sps_extension_flag[0]) {
973 int extended_precision_processing_flag;
974 int high_precision_offsets_enabled_flag;
975 int cabac_bypass_alignment_enabled_flag;
976
977 sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
978 sps->transform_skip_context_enabled_flag = get_bits1(gb);
979 sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
980
981 sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
982
983 extended_precision_processing_flag = get_bits1(gb);
984 if (extended_precision_processing_flag)
985 av_log(s->avctx, AV_LOG_WARNING,
986 "extended_precision_processing_flag not yet implemented\n");
987
988 sps->intra_smoothing_disabled_flag = get_bits1(gb);
989 high_precision_offsets_enabled_flag = get_bits1(gb);
990 if (high_precision_offsets_enabled_flag)
991 av_log(s->avctx, AV_LOG_WARNING,
992 "high_precision_offsets_enabled_flag not yet implemented\n");
993
994 sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
995
996 cabac_bypass_alignment_enabled_flag = get_bits1(gb);
997 if (cabac_bypass_alignment_enabled_flag)
998 av_log(s->avctx, AV_LOG_WARNING,
999 "cabac_bypass_alignment_enabled_flag not yet implemented\n");
1000 }
1001 }
1002 if (s->apply_defdispwin) {
1003 sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
1004 sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
1005 sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
1006 sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
1007 }
1008 if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
1009 !(s->avctx->flags & CODEC_FLAG_UNALIGNED)) {
1010 sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
1011 av_log(s->avctx, AV_LOG_WARNING, "Reducing left output window to %d "
1012 "chroma samples to preserve alignment.\n",
1013 sps->output_window.left_offset);
1014 }
1015 sps->output_width = sps->width -
1016 (sps->output_window.left_offset + sps->output_window.right_offset);
1017 sps->output_height = sps->height -
1018 (sps->output_window.top_offset + sps->output_window.bottom_offset);
1019 if (sps->output_width <= 0 || sps->output_height <= 0) {
1020 av_log(s->avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
1021 sps->output_width, sps->output_height);
1022 if (s->avctx->err_recognition & AV_EF_EXPLODE) {
1023 ret = AVERROR_INVALIDDATA;
1024 goto err;
1025 }
1026 av_log(s->avctx, AV_LOG_WARNING,
1027 "Displaying the whole video surface.\n");
1028 sps->pic_conf_win.left_offset =
1029 sps->pic_conf_win.right_offset =
1030 sps->pic_conf_win.top_offset =
1031 sps->pic_conf_win.bottom_offset = 0;
1032 sps->output_width = sps->width;
1033 sps->output_height = sps->height;
1034 }
1035
1036 // Inferred parameters
1037 sps->log2_ctb_size = sps->log2_min_cb_size +
1038 sps->log2_diff_max_min_coding_block_size;
1039 sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
1040
1041 sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1042 sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
1043 sps->ctb_size = sps->ctb_width * sps->ctb_height;
1044
1045 sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
1046 sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
1047 sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
1048 sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
1049 sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
1050 sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
1051 sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
1052
1053 sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
1054
1055 if (sps->width & ((1 << sps->log2_min_cb_size) - 1) ||
1056 sps->height & ((1 << sps->log2_min_cb_size) - 1)) {
1057 av_log(s->avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
1058 goto err;
1059 }
1060
1061 if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
1062 av_log(s->avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
1063 goto err;
1064 }
1065 if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
1066 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
1067 sps->max_transform_hierarchy_depth_inter);
1068 goto err;
1069 }
1070 if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
1071 av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
1072 sps->max_transform_hierarchy_depth_intra);
1073 goto err;
1074 }
1075 if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
1076 av_log(s->avctx, AV_LOG_ERROR,
1077 "max transform block size out of range: %d\n",
1078 sps->log2_max_trafo_size);
1079 goto err;
1080 }
1081
1082 if (get_bits_left(gb) < 0) {
1083 av_log(s->avctx, AV_LOG_ERROR,
1084 "Overread SPS by %d bits\n", -get_bits_left(gb));
1085 goto err;
1086 }
1087
1088 if (s->avctx->debug & FF_DEBUG_BITSTREAM) {
1089 av_log(s->avctx, AV_LOG_DEBUG,
1090 "Parsed SPS: id %d; coded wxh: %dx%d; "
1091 "cropped wxh: %dx%d; pix_fmt: %s.\n",
1092 sps_id, sps->width, sps->height,
1093 sps->output_width, sps->output_height,
1094 av_get_pix_fmt_name(sps->pix_fmt));
1095 }
1096
1097 /* check if this is a repeat of an already parsed SPS, then keep the
1098 * original one.
1099 * otherwise drop all PPSes that depend on it */
1100 if (s->sps_list[sps_id] &&
1101 !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
1102 av_buffer_unref(&sps_buf);
1103 } else {
1104 for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) {
1105 if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == sps_id)
1106 av_buffer_unref(&s->pps_list[i]);
1107 }
1108 if (s->sps_list[sps_id] && s->sps == (HEVCSPS*)s->sps_list[sps_id]->data) {
1109 av_buffer_unref(&s->current_sps);
1110 s->current_sps = av_buffer_ref(s->sps_list[sps_id]);
1111 if (!s->current_sps)
1112 s->sps = NULL;
1113 }
1114 av_buffer_unref(&s->sps_list[sps_id]);
1115 s->sps_list[sps_id] = sps_buf;
1116 }
1117
1118 return 0;
1119
1120err:
1121 av_buffer_unref(&sps_buf);
1122 return ret;
1123}
1124
1125static void hevc_pps_free(void *opaque, uint8_t *data)
1126{
1127 HEVCPPS *pps = (HEVCPPS*)data;
1128
1129 av_freep(&pps->column_width);
1130 av_freep(&pps->row_height);
1131 av_freep(&pps->col_bd);
1132 av_freep(&pps->row_bd);
1133 av_freep(&pps->col_idxX);
1134 av_freep(&pps->ctb_addr_rs_to_ts);
1135 av_freep(&pps->ctb_addr_ts_to_rs);
1136 av_freep(&pps->tile_pos_rs);
1137 av_freep(&pps->tile_id);
1138 av_freep(&pps->min_tb_addr_zs_tab);
1139
1140 av_freep(&pps);
1141}
1142
1143static int pps_range_extensions(HEVCContext *s, HEVCPPS *pps, HEVCSPS *sps) {
1144 GetBitContext *gb = &s->HEVClc->gb;
1145 int i;
1146
1147 if (pps->transform_skip_enabled_flag) {
1148 pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;
1149 }
1150 pps->cross_component_prediction_enabled_flag = get_bits1(gb);
1151 pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
1152 if (pps->chroma_qp_offset_list_enabled_flag) {
1153 pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);
1154 pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);
1155 if (pps->chroma_qp_offset_list_len_minus1 && pps->chroma_qp_offset_list_len_minus1 >= 5) {
1156 av_log(s->avctx, AV_LOG_ERROR,
1157 "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
1158 return AVERROR_INVALIDDATA;
1159 }
1160 for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
1161 pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);
1162 if (pps->cb_qp_offset_list[i]) {
1163 av_log(s->avctx, AV_LOG_WARNING,
1164 "cb_qp_offset_list not tested yet.\n");
1165 }
1166 pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);
1167 if (pps->cr_qp_offset_list[i]) {
1168 av_log(s->avctx, AV_LOG_WARNING,
1169 "cb_qp_offset_list not tested yet.\n");
1170 }
1171 }
1172 }
1173 pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);
1174 pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);
1175
1176 return(0);
1177}
1178
1179int ff_hevc_decode_nal_pps(HEVCContext *s)
1180{
1181 GetBitContext *gb = &s->HEVClc->gb;
1182 HEVCSPS *sps = NULL;
1183 int pic_area_in_ctbs;
1184 int log2_diff_ctb_min_tb_size;
1185 int i, j, x, y, ctb_addr_rs, tile_id;
1186 int ret = 0;
1187 unsigned int pps_id = 0;
1188
1189 AVBufferRef *pps_buf;
1190 HEVCPPS *pps = av_mallocz(sizeof(*pps));
1191
1192 if (!pps)
1193 return AVERROR(ENOMEM);
1194
1195 pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),
1196 hevc_pps_free, NULL, 0);
1197 if (!pps_buf) {
1198 av_freep(&pps);
1199 return AVERROR(ENOMEM);
1200 }
1201
1202 av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");
1203
1204 // Default values
1205 pps->loop_filter_across_tiles_enabled_flag = 1;
1206 pps->num_tile_columns = 1;
1207 pps->num_tile_rows = 1;
1208 pps->uniform_spacing_flag = 1;
1209 pps->disable_dbf = 0;
1210 pps->beta_offset = 0;
1211 pps->tc_offset = 0;
1212 pps->log2_max_transform_skip_block_size = 2;
1213
1214 // Coded parameters
1215 pps_id = get_ue_golomb_long(gb);
1216 if (pps_id >= MAX_PPS_COUNT) {
1217 av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1218 ret = AVERROR_INVALIDDATA;
1219 goto err;
1220 }
1221 pps->sps_id = get_ue_golomb_long(gb);
1222 if (pps->sps_id >= MAX_SPS_COUNT) {
1223 av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1224 ret = AVERROR_INVALIDDATA;
1225 goto err;
1226 }
1227 if (!s->sps_list[pps->sps_id]) {
1228 av_log(s->avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
1229 ret = AVERROR_INVALIDDATA;
1230 goto err;
1231 }
1232 sps = (HEVCSPS *)s->sps_list[pps->sps_id]->data;
1233
1234 pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1235 pps->output_flag_present_flag = get_bits1(gb);
1236 pps->num_extra_slice_header_bits = get_bits(gb, 3);
1237
1238 pps->sign_data_hiding_flag = get_bits1(gb);
1239
1240 pps->cabac_init_present_flag = get_bits1(gb);
1241
1242 pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1243 pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1244
1245 pps->pic_init_qp_minus26 = get_se_golomb(gb);
1246
1247 pps->constrained_intra_pred_flag = get_bits1(gb);
1248 pps->transform_skip_enabled_flag = get_bits1(gb);
1249
1250 pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1251 pps->diff_cu_qp_delta_depth = 0;
1252 if (pps->cu_qp_delta_enabled_flag)
1253 pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1254
1255 pps->cb_qp_offset = get_se_golomb(gb);
1256 if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1257 av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1258 pps->cb_qp_offset);
1259 ret = AVERROR_INVALIDDATA;
1260 goto err;
1261 }
1262 pps->cr_qp_offset = get_se_golomb(gb);
1263 if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1264 av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1265 pps->cr_qp_offset);
1266 ret = AVERROR_INVALIDDATA;
1267 goto err;
1268 }
1269 pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1270
1271 pps->weighted_pred_flag = get_bits1(gb);
1272 pps->weighted_bipred_flag = get_bits1(gb);
1273
1274 pps->transquant_bypass_enable_flag = get_bits1(gb);
1275 pps->tiles_enabled_flag = get_bits1(gb);
1276 pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1277
1278 if (pps->tiles_enabled_flag) {
1279 pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1280 pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1281 if (pps->num_tile_columns == 0 ||
1282 pps->num_tile_columns >= sps->width) {
1283 av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1284 pps->num_tile_columns - 1);
1285 ret = AVERROR_INVALIDDATA;
1286 goto err;
1287 }
1288 if (pps->num_tile_rows == 0 ||
1289 pps->num_tile_rows >= sps->height) {
1290 av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1291 pps->num_tile_rows - 1);
1292 ret = AVERROR_INVALIDDATA;
1293 goto err;
1294 }
1295
1296 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1297 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1298 if (!pps->column_width || !pps->row_height) {
1299 ret = AVERROR(ENOMEM);
1300 goto err;
1301 }
1302
1303 pps->uniform_spacing_flag = get_bits1(gb);
1304 if (!pps->uniform_spacing_flag) {
1305 uint64_t sum = 0;
1306 for (i = 0; i < pps->num_tile_columns - 1; i++) {
1307 pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1308 sum += pps->column_width[i];
1309 }
1310 if (sum >= sps->ctb_width) {
1311 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1312 ret = AVERROR_INVALIDDATA;
1313 goto err;
1314 }
1315 pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1316
1317 sum = 0;
1318 for (i = 0; i < pps->num_tile_rows - 1; i++) {
1319 pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1320 sum += pps->row_height[i];
1321 }
1322 if (sum >= sps->ctb_height) {
1323 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1324 ret = AVERROR_INVALIDDATA;
1325 goto err;
1326 }
1327 pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1328 }
1329 pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1330 }
1331
1332 pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1333
1334 pps->deblocking_filter_control_present_flag = get_bits1(gb);
1335 if (pps->deblocking_filter_control_present_flag) {
1336 pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1337 pps->disable_dbf = get_bits1(gb);
1338 if (!pps->disable_dbf) {
1339 pps->beta_offset = get_se_golomb(gb) * 2;
1340 pps->tc_offset = get_se_golomb(gb) * 2;
1341 if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1342 av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1343 pps->beta_offset/2);
1344 ret = AVERROR_INVALIDDATA;
1345 goto err;
1346 }
1347 if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1348 av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1349 pps->tc_offset/2);
1350 ret = AVERROR_INVALIDDATA;
1351 goto err;
1352 }
1353 }
1354 }
1355
1356 pps->scaling_list_data_present_flag = get_bits1(gb);
1357 if (pps->scaling_list_data_present_flag) {
1358 set_default_scaling_list_data(&pps->scaling_list);
1359 ret = scaling_list_data(s, &pps->scaling_list, sps);
1360 if (ret < 0)
1361 goto err;
1362 }
1363 pps->lists_modification_present_flag = get_bits1(gb);
1364 pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1365 if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1366 av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1367 pps->log2_parallel_merge_level - 2);
1368 ret = AVERROR_INVALIDDATA;
1369 goto err;
1370 }
1371
1372 pps->slice_header_extension_present_flag = get_bits1(gb);
1373
1374 if (get_bits1(gb)) { // pps_extension_present_flag
1375 int pps_range_extensions_flag = get_bits1(gb);
1376 /* int pps_extension_7bits = */ get_bits(gb, 7);
1377 if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps_range_extensions_flag) {
1378 pps_range_extensions(s, pps, sps);
1379 }
1380 }
1381
1382 // Inferred parameters
1383 pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1384 pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1385 pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1386 if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
1387 ret = AVERROR(ENOMEM);
1388 goto err;
1389 }
1390
1391 if (pps->uniform_spacing_flag) {
1392 if (!pps->column_width) {
1393 pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1394 pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1395 }
1396 if (!pps->column_width || !pps->row_height) {
1397 ret = AVERROR(ENOMEM);
1398 goto err;
1399 }
1400
1401 for (i = 0; i < pps->num_tile_columns; i++) {
1402 pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1403 (i * sps->ctb_width) / pps->num_tile_columns;
1404 }
1405
1406 for (i = 0; i < pps->num_tile_rows; i++) {
1407 pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1408 (i * sps->ctb_height) / pps->num_tile_rows;
1409 }
1410 }
1411
1412 pps->col_bd[0] = 0;
1413 for (i = 0; i < pps->num_tile_columns; i++)
1414 pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1415
1416 pps->row_bd[0] = 0;
1417 for (i = 0; i < pps->num_tile_rows; i++)
1418 pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1419
1420 for (i = 0, j = 0; i < sps->ctb_width; i++) {
1421 if (i > pps->col_bd[j])
1422 j++;
1423 pps->col_idxX[i] = j;
1424 }
1425
1426 /**
1427 * 6.5
1428 */
1429 pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1430
1431 pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1432 pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1433 pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1434 pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
1435 if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1436 !pps->tile_id || !pps->min_tb_addr_zs_tab) {
1437 ret = AVERROR(ENOMEM);
1438 goto err;
1439 }
1440
1441 for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1442 int tb_x = ctb_addr_rs % sps->ctb_width;
1443 int tb_y = ctb_addr_rs / sps->ctb_width;
1444 int tile_x = 0;
1445 int tile_y = 0;
1446 int val = 0;
1447
1448 for (i = 0; i < pps->num_tile_columns; i++) {
1449 if (tb_x < pps->col_bd[i + 1]) {
1450 tile_x = i;
1451 break;
1452 }
1453 }
1454
1455 for (i = 0; i < pps->num_tile_rows; i++) {
1456 if (tb_y < pps->row_bd[i + 1]) {
1457 tile_y = i;
1458 break;
1459 }
1460 }
1461
1462 for (i = 0; i < tile_x; i++)
1463 val += pps->row_height[tile_y] * pps->column_width[i];
1464 for (i = 0; i < tile_y; i++)
1465 val += sps->ctb_width * pps->row_height[i];
1466
1467 val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1468 tb_x - pps->col_bd[tile_x];
1469
1470 pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1471 pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1472 }
1473
1474 for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1475 for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1476 for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1477 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1478 pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1479
1480 pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1481 if (!pps->tile_pos_rs) {
1482 ret = AVERROR(ENOMEM);
1483 goto err;
1484 }
1485
1486 for (j = 0; j < pps->num_tile_rows; j++)
1487 for (i = 0; i < pps->num_tile_columns; i++)
1488 pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1489
1490 log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
1491 pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
1492 for (y = 0; y < sps->tb_mask+2; y++) {
1493 pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
1494 pps->min_tb_addr_zs_tab[y] = -1;
1495 }
1496 for (y = 0; y < sps->tb_mask+1; y++) {
1497 for (x = 0; x < sps->tb_mask+1; x++) {
1498 int tb_x = x >> log2_diff_ctb_min_tb_size;
1499 int tb_y = y >> log2_diff_ctb_min_tb_size;
1500 int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1501 int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1502 (log2_diff_ctb_min_tb_size * 2);
1503 for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
1504 int m = 1 << i;
1505 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1506 }
1507 pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
1508 }
1509 }
1510
1511 if (get_bits_left(gb) < 0) {
1512 av_log(s->avctx, AV_LOG_ERROR,
1513 "Overread PPS by %d bits\n", -get_bits_left(gb));
1514 goto err;
1515 }
1516
1517 av_buffer_unref(&s->pps_list[pps_id]);
1518 s->pps_list[pps_id] = pps_buf;
1519
1520 return 0;
1521
1522err:
1523 av_buffer_unref(&pps_buf);
1524 return ret;
1525}
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