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