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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 "golomb.h"
27 #include "libavutil/imgutils.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  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, "Invalid value of delta_idx "
98  "in slice header RPS: %d > %d.\n", delta_idx,
99  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 static int decode_profile_tier_level(HEVCLocalContext *lc, PTL *ptl, int max_num_sub_layers)
195 {
196  int i, j;
197  GetBitContext *gb = &lc->gb;
198 
199  ptl->general_profile_space = get_bits(gb, 2);
200  ptl->general_tier_flag = get_bits1(gb);
201  ptl->general_profile_idc = get_bits(gb, 5);
202  for (i = 0; i < 32; i++)
203  ptl->general_profile_compatibility_flag[i] = get_bits1(gb);
204  skip_bits1(gb);// general_progressive_source_flag
205  skip_bits1(gb);// general_interlaced_source_flag
206  skip_bits1(gb);// general_non_packed_constraint_flag
207  skip_bits1(gb);// general_frame_only_constraint_flag
208  if (get_bits(gb, 16) != 0) // XXX_reserved_zero_44bits[0..15]
209  return -1;
210  if (get_bits(gb, 16) != 0) // XXX_reserved_zero_44bits[16..31]
211  return -1;
212  if (get_bits(gb, 12) != 0) // XXX_reserved_zero_44bits[32..43]
213  return -1;
214 
215  ptl->general_level_idc = get_bits(gb, 8);
216  for (i = 0; i < max_num_sub_layers - 1; i++) {
217  ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
218  ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
219  }
220  if (max_num_sub_layers - 1 > 0)
221  for (i = max_num_sub_layers - 1; i < 8; i++)
222  skip_bits(gb, 2); // reserved_zero_2bits[i]
223  for (i = 0; i < max_num_sub_layers - 1; i++) {
224  if (ptl->sub_layer_profile_present_flag[i]) {
225  ptl->sub_layer_profile_space[i] = get_bits(gb, 2);
226  ptl->sub_layer_tier_flag[i] = get_bits(gb, 1);
227  ptl->sub_layer_profile_idc[i] = get_bits(gb, 5);
228  for (j = 0; j < 32; j++)
229  ptl->sub_layer_profile_compatibility_flags[i][j] = get_bits1(gb);
230  skip_bits1(gb);// sub_layer_progressive_source_flag
231  skip_bits1(gb);// sub_layer_interlaced_source_flag
232  skip_bits1(gb);// sub_layer_non_packed_constraint_flag
233  skip_bits1(gb);// sub_layer_frame_only_constraint_flag
234 
235  if (get_bits(gb, 16) != 0) // sub_layer_reserved_zero_44bits[0..15]
236  return -1;
237  if (get_bits(gb, 16) != 0) // sub_layer_reserved_zero_44bits[16..31]
238  return -1;
239  if (get_bits(gb, 12) != 0) // sub_layer_reserved_zero_44bits[32..43]
240  return -1;
241  }
242  if (ptl->sub_layer_level_present_flag[i])
243  ptl->sub_layer_level_idc[i] = get_bits(gb, 8);
244  }
245  return 0;
246 }
247 
248 static void decode_sublayer_hrd(HEVCContext *s, int nb_cpb, int subpic_params_present)
249 {
250  GetBitContext *gb = &s->HEVClc->gb;
251  int i;
252 
253  for (i = 0; i < nb_cpb; i++) {
254  get_ue_golomb_long(gb); // bit_rate_value_minus1
255  get_ue_golomb_long(gb); // cpb_size_value_minus1
256 
257  if (subpic_params_present) {
258  get_ue_golomb_long(gb); // cpb_size_du_value_minus1
259  get_ue_golomb_long(gb); // bit_rate_du_value_minus1
260  }
261  skip_bits1(gb); // cbr_flag
262  }
263 }
264 
265 static void decode_hrd(HEVCContext *s, int common_inf_present, int max_sublayers)
266 {
267  GetBitContext *gb = &s->HEVClc->gb;
268  int nal_params_present = 0, vcl_params_present = 0;
269  int subpic_params_present = 0;
270  int i;
271 
272  if (common_inf_present) {
273  nal_params_present = get_bits1(gb);
274  vcl_params_present = get_bits1(gb);
275 
276  if (nal_params_present || vcl_params_present) {
277  subpic_params_present = get_bits1(gb);
278 
279  if (subpic_params_present) {
280  skip_bits(gb, 8); // tick_divisor_minus2
281  skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1
282  skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag
283  skip_bits(gb, 5); // dpb_output_delay_du_length_minus1
284  }
285 
286  skip_bits(gb, 4); // bit_rate_scale
287  skip_bits(gb, 4); // cpb_size_scale
288 
289  if (subpic_params_present)
290  skip_bits(gb, 4); // cpb_size_du_scale
291 
292  skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1
293  skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1
294  skip_bits(gb, 5); // dpb_output_delay_length_minus1
295  }
296  }
297 
298  for (i = 0; i < max_sublayers; i++) {
299  int low_delay = 0;
300  int nb_cpb = 1;
301  int fixed_rate = get_bits1(gb);
302 
303  if (!fixed_rate)
304  fixed_rate = get_bits1(gb);
305 
306  if (fixed_rate)
307  get_ue_golomb_long(gb); // elemental_duration_in_tc_minus1
308  else
309  low_delay = get_bits1(gb);
310 
311  if (!low_delay)
312  nb_cpb = get_ue_golomb_long(gb) + 1;
313 
314  if (nal_params_present)
315  decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
316  if (vcl_params_present)
317  decode_sublayer_hrd(s, nb_cpb, subpic_params_present);
318  }
319 }
320 
321 int ff_hevc_decode_nal_vps(HEVCContext *s)
322 {
323  int i,j;
324  GetBitContext *gb = &s->HEVClc->gb;
325  int vps_id = 0;
326  VPS *vps;
327 
328  av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");
329 
330  vps = av_mallocz(sizeof(*vps));
331  if (!vps)
332  return AVERROR(ENOMEM);
333 
334  vps_id = get_bits(gb, 4);
335  if (vps_id >= MAX_VPS_COUNT) {
336  av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);
337  goto err;
338  }
339 
340  if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
341  av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
342  goto err;
343  }
344 
345  vps->vps_max_layers = get_bits(gb, 6) + 1;
346  vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
347  vps->vps_temporal_id_nesting_flag = get_bits1(gb);
348 
349  if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
350  av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
351  goto err;
352  }
353 
354  if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {
355  av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
356  vps->vps_max_sub_layers);
357  goto err;
358  }
359 
360  if (decode_profile_tier_level(s->HEVClc, &vps->ptl, vps->vps_max_sub_layers) < 0) {
361  av_log(s->avctx, AV_LOG_ERROR, "Error decoding profile tier level.\n");
362  goto err;
363  }
364  vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
365 
366  i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
367  for (; i < vps->vps_max_sub_layers; i++) {
368  vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
369  vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
370  vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
371 
372  if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE) {
373  av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
374  vps->vps_max_dec_pic_buffering[i] - 1);
375  goto err;
376  }
377  if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
378  av_log(s->avctx, AV_LOG_ERROR, "vps_max_num_reorder_pics out of range: %d\n",
379  vps->vps_num_reorder_pics[i]);
380  goto err;
381  }
382  }
383 
384  vps->vps_max_layer_id = get_bits(gb, 6);
385  vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
386  for (i = 1; i < vps->vps_num_layer_sets; i++)
387  for (j = 0; j <= vps->vps_max_layer_id; j++)
388  skip_bits(gb, 1); // layer_id_included_flag[i][j]
389 
390  vps->vps_timing_info_present_flag = get_bits1(gb);
391  if (vps->vps_timing_info_present_flag) {
392  vps->vps_num_units_in_tick = get_bits_long(gb, 32);
393  vps->vps_time_scale = get_bits_long(gb, 32);
394  vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
395  if (vps->vps_poc_proportional_to_timing_flag)
396  vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
397  vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
398  for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
399  int common_inf_present = 1;
400 
401  get_ue_golomb_long(gb); // hrd_layer_set_idx
402  if (i)
403  common_inf_present = get_bits1(gb);
404  decode_hrd(s, common_inf_present, vps->vps_max_sub_layers);
405  }
406  }
407  get_bits1(gb); /* vps_extension_flag */
408 
409  av_free(s->vps_list[vps_id]);
410  s->vps_list[vps_id] = vps;
411  return 0;
412 
413 err:
414  av_free(vps);
415  return AVERROR_INVALIDDATA;
416 }
417 
418 static void decode_vui(HEVCContext *s, HEVCSPS *sps)
419 {
420  VUI *vui = &sps->vui;
421  GetBitContext *gb = &s->HEVClc->gb;
422  int sar_present;
423 
424  av_log(s->avctx, AV_LOG_DEBUG, "Decoding VUI\n");
425 
426  sar_present = get_bits1(gb);
427  if (sar_present) {
428  uint8_t sar_idx = get_bits(gb, 8);
429  if (sar_idx < FF_ARRAY_ELEMS(vui_sar))
430  vui->sar = vui_sar[sar_idx];
431  else if (sar_idx == 255) {
432  vui->sar.num = get_bits(gb, 16);
433  vui->sar.den = get_bits(gb, 16);
434  } else
435  av_log(s->avctx, AV_LOG_WARNING, "Unknown SAR index: %u.\n",
436  sar_idx);
437  }
438 
439  vui->overscan_info_present_flag = get_bits1(gb);
440  if (vui->overscan_info_present_flag)
441  vui->overscan_appropriate_flag = get_bits1(gb);
442 
443  vui->video_signal_type_present_flag = get_bits1(gb);
444  if (vui->video_signal_type_present_flag) {
445  vui->video_format = get_bits(gb, 3);
446  vui->video_full_range_flag = get_bits1(gb);
447  vui->colour_description_present_flag = get_bits1(gb);
448  if (vui->colour_description_present_flag) {
449  vui->colour_primaries = get_bits(gb, 8);
450  vui->transfer_characteristic = get_bits(gb, 8);
451  vui->matrix_coeffs = get_bits(gb, 8);
452  }
453  }
454 
455  vui->chroma_loc_info_present_flag = get_bits1(gb);
456  if (vui->chroma_loc_info_present_flag) {
457  vui->chroma_sample_loc_type_top_field = get_ue_golomb_long(gb);
458  vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);
459  }
460 
461  vui->neutra_chroma_indication_flag = get_bits1(gb);
462  vui->field_seq_flag = get_bits1(gb);
463  vui->frame_field_info_present_flag = get_bits1(gb);
464 
465  vui->default_display_window_flag = get_bits1(gb);
466  if (vui->default_display_window_flag) {
467  //TODO: * 2 is only valid for 420
468  vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * 2;
469  vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * 2;
470  vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * 2;
471  vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;
472 
473  if (s->strict_def_disp_win &&
474  s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
475  av_log(s->avctx, AV_LOG_DEBUG,
476  "discarding vui default display window, "
477  "original values are l:%u r:%u t:%u b:%u\n",
478  vui->def_disp_win.left_offset,
479  vui->def_disp_win.right_offset,
480  vui->def_disp_win.top_offset,
481  vui->def_disp_win.bottom_offset);
482 
483  vui->def_disp_win.left_offset =
484  vui->def_disp_win.right_offset =
485  vui->def_disp_win.top_offset =
486  vui->def_disp_win.bottom_offset = 0;
487  }
488  }
489 
490  vui->vui_timing_info_present_flag = get_bits1(gb);
491  if (vui->vui_timing_info_present_flag) {
492  vui->vui_num_units_in_tick = get_bits(gb, 32);
493  vui->vui_time_scale = get_bits(gb, 32);
494  vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
495  if (vui->vui_poc_proportional_to_timing_flag)
496  vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
497  vui->vui_hrd_parameters_present_flag = get_bits1(gb);
498  if (vui->vui_hrd_parameters_present_flag)
499  decode_hrd(s, 1, sps->max_sub_layers);
500  }
501 
502  vui->bitstream_restriction_flag = get_bits1(gb);
503  if (vui->bitstream_restriction_flag) {
504  vui->tiles_fixed_structure_flag = get_bits1(gb);
505  vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
506  vui->restricted_ref_pic_lists_flag = get_bits1(gb);
507  vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
508  vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
509  vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
510  vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
511  vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
512  }
513 }
514 
515 static void set_default_scaling_list_data(ScalingList *sl)
516 {
517  int matrixId;
518 
519  for (matrixId = 0; matrixId < 6; matrixId++) {
520  // 4x4 default is 16
521  memset(sl->sl[0][matrixId], 16, 16);
522  sl->sl_dc[0][matrixId] = 16; // default for 16x16
523  sl->sl_dc[1][matrixId] = 16; // default for 32x32
524  }
525  memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
526  memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
527  memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
528  memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
529  memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
530  memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
531  memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
532  memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
533  memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
534  memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
535  memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
536  memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
537  memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
538  memcpy(sl->sl[3][1], default_scaling_list_inter, 64);
539 }
540 
541 static int scaling_list_data(HEVCContext *s, ScalingList *sl)
542 {
543  GetBitContext *gb = &s->HEVClc->gb;
544  uint8_t scaling_list_pred_mode_flag[4][6];
545  int32_t scaling_list_dc_coef[2][6];
546 
547  int size_id, matrix_id, i, pos, delta;
548  for (size_id = 0; size_id < 4; size_id++)
549  for (matrix_id = 0; matrix_id < ((size_id == 3) ? 2 : 6); matrix_id++) {
550  scaling_list_pred_mode_flag[size_id][matrix_id] = get_bits1(gb);
551  if (!scaling_list_pred_mode_flag[size_id][matrix_id]) {
552  delta = get_ue_golomb_long(gb);
553  // Only need to handle non-zero delta. Zero means default, which should already be in the arrays.
554  if (delta) {
555  // Copy from previous array.
556  if (matrix_id - delta < 0) {
557  av_log(s->avctx, AV_LOG_ERROR,
558  "Invalid delta in scaling list data: %d.\n", delta);
559  return AVERROR_INVALIDDATA;
560  }
561 
562  memcpy(sl->sl[size_id][matrix_id],
563  sl->sl[size_id][matrix_id - delta],
564  size_id > 0 ? 64 : 16);
565  if (size_id > 1)
566  sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
567  }
568  } else {
569  int next_coef;
570  int coef_num;
571  int32_t scaling_list_delta_coef;
572 
573  next_coef = 8;
574  coef_num = FFMIN(64, (1 << (4 + (size_id << 1))));
575  if (size_id > 1) {
576  scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;
577  next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
578  sl->sl_dc[size_id - 2][matrix_id] = next_coef;
579  }
580  for (i = 0; i < coef_num; i++) {
581  if (size_id == 0)
582  pos = 4 * ff_hevc_diag_scan4x4_y[i] + ff_hevc_diag_scan4x4_x[i];
583  else
584  pos = 8 * ff_hevc_diag_scan8x8_y[i] + ff_hevc_diag_scan8x8_x[i];
585 
586  scaling_list_delta_coef = get_se_golomb(gb);
587  next_coef = (next_coef + scaling_list_delta_coef + 256 ) % 256;
588  sl->sl[size_id][matrix_id][pos] = next_coef;
589  }
590  }
591  }
592 
593  return 0;
594 }
595 
596 int ff_hevc_decode_nal_sps(HEVCContext *s)
597 {
598  const AVPixFmtDescriptor *desc;
599  GetBitContext *gb = &s->HEVClc->gb;
600  int ret = 0;
601  int sps_id = 0;
602  int log2_diff_max_min_transform_block_size;
603  int bit_depth_chroma, start, vui_present, sublayer_ordering_info;
604  int i;
605 
606  HEVCSPS *sps;
607  AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));
608 
609  if (!sps_buf)
610  return AVERROR(ENOMEM);
611  sps = (HEVCSPS*)sps_buf->data;
612 
613  av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");
614 
615  // Coded parameters
616 
617  sps->vps_id = get_bits(gb, 4);
618  if (sps->vps_id >= MAX_VPS_COUNT) {
619  av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);
620  ret = AVERROR_INVALIDDATA;
621  goto err;
622  }
623 
624  if (!s->vps_list[sps->vps_id]) {
625  av_log(s->avctx, AV_LOG_ERROR, "VPS does not exist \n");
626  ret = AVERROR_INVALIDDATA;
627  goto err;
628  }
629 
630  sps->max_sub_layers = get_bits(gb, 3) + 1;
631  if (sps->max_sub_layers > MAX_SUB_LAYERS) {
632  av_log(s->avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
633  sps->max_sub_layers);
634  ret = AVERROR_INVALIDDATA;
635  goto err;
636  }
637 
638  skip_bits1(gb); // temporal_id_nesting_flag
639  if (decode_profile_tier_level(s->HEVClc, &sps->ptl, sps->max_sub_layers) < 0) {
640  av_log(s->avctx, AV_LOG_ERROR, "error decoding profile tier level\n");
641  ret = AVERROR_INVALIDDATA;
642  goto err;
643  }
644  sps_id = get_ue_golomb_long(gb);
645  if (sps_id >= MAX_SPS_COUNT) {
646  av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);
647  ret = AVERROR_INVALIDDATA;
648  goto err;
649  }
650 
651  sps->chroma_format_idc = get_ue_golomb_long(gb);
652  if (sps->chroma_format_idc != 1) {
653  avpriv_report_missing_feature(s->avctx, "chroma_format_idc != 1\n");
654  ret = AVERROR_INVALIDDATA;
655  goto err;
656  }
657 
658  if (sps->chroma_format_idc == 3)
659  sps->separate_colour_plane_flag = get_bits1(gb);
660 
661  sps->width = get_ue_golomb_long(gb);
662  sps->height = get_ue_golomb_long(gb);
663  if ((ret = av_image_check_size(sps->width,
664  sps->height, 0, s->avctx)) < 0)
665  goto err;
666 
667  if (get_bits1(gb)) { // pic_conformance_flag
668  //TODO: * 2 is only valid for 420
669  sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * 2;
670  sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * 2;
671  sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * 2;
672  sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;
673 
674  if (s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {
675  av_log(s->avctx, AV_LOG_DEBUG,
676  "discarding sps conformance window, "
677  "original values are l:%u r:%u t:%u b:%u\n",
678  sps->pic_conf_win.left_offset,
679  sps->pic_conf_win.right_offset,
680  sps->pic_conf_win.top_offset,
681  sps->pic_conf_win.bottom_offset);
682 
683  sps->pic_conf_win.left_offset =
684  sps->pic_conf_win.right_offset =
685  sps->pic_conf_win.top_offset =
686  sps->pic_conf_win.bottom_offset = 0;
687  }
688  sps->output_window = sps->pic_conf_win;
689  }
690 
691  sps->bit_depth = get_ue_golomb_long(gb) + 8;
692  bit_depth_chroma = get_ue_golomb_long(gb) + 8;
693  if (bit_depth_chroma != sps->bit_depth) {
694  av_log(s->avctx, AV_LOG_ERROR,
695  "Luma bit depth (%d) is different from chroma bit depth (%d), this is unsupported.\n",
696  sps->bit_depth, bit_depth_chroma);
697  ret = AVERROR_INVALIDDATA;
698  goto err;
699  }
700 
701  if (sps->chroma_format_idc == 1) {
702  switch (sps->bit_depth) {
703  case 8: sps->pix_fmt = AV_PIX_FMT_YUV420P; break;
704  case 9: sps->pix_fmt = AV_PIX_FMT_YUV420P9; break;
705  case 10: sps->pix_fmt = AV_PIX_FMT_YUV420P10; break;
706  default:
707  av_log(s->avctx, AV_LOG_ERROR, "Unsupported bit depth: %d\n",
708  sps->bit_depth);
709  ret = AVERROR_PATCHWELCOME;
710  goto err;
711  }
712  } else {
713  av_log(s->avctx, AV_LOG_ERROR, "non-4:2:0 support is currently unspecified.\n");
714  return AVERROR_PATCHWELCOME;
715  }
716 
717  desc = av_pix_fmt_desc_get(sps->pix_fmt);
718  if (!desc) {
719  ret = AVERROR(EINVAL);
720  goto err;
721  }
722 
723  sps->hshift[0] = sps->vshift[0] = 0;
724  sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
725  sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
726 
727  sps->pixel_shift = sps->bit_depth > 8;
728 
729  sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
730  if (sps->log2_max_poc_lsb > 16) {
731  av_log(s->avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
732  sps->log2_max_poc_lsb - 4);
733  ret = AVERROR_INVALIDDATA;
734  goto err;
735  }
736 
737  sublayer_ordering_info = get_bits1(gb);
738  start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;
739  for (i = start; i < sps->max_sub_layers; i++) {
740  sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
741  sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
742  sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
743  if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {
744  av_log(s->avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
745  sps->temporal_layer[i].max_dec_pic_buffering - 1);
746  ret = AVERROR_INVALIDDATA;
747  goto err;
748  }
749  if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
750  av_log(s->avctx, AV_LOG_ERROR, "sps_max_num_reorder_pics out of range: %d\n",
751  sps->temporal_layer[i].num_reorder_pics);
752  ret = AVERROR_INVALIDDATA;
753  goto err;
754  }
755  }
756 
757  if (!sublayer_ordering_info) {
758  for (i = 0; i < start; i++){
759  sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
760  sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
761  sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
762  }
763  }
764 
765  sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
766  sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
767  sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
768  log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
769  sps->log2_max_trafo_size = log2_diff_max_min_transform_block_size + sps->log2_min_tb_size;
770 
771  if (sps->log2_min_tb_size >= sps->log2_min_cb_size) {
772  av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
773  ret = AVERROR_INVALIDDATA;
774  goto err;
775  }
776  sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
777  sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
778 
779  sps->scaling_list_enable_flag = get_bits1(gb);
780  if (sps->scaling_list_enable_flag) {
781  set_default_scaling_list_data(&sps->scaling_list);
782 
783  if (get_bits1(gb)) {
784  ret = scaling_list_data(s, &sps->scaling_list);
785  if (ret < 0)
786  goto err;
787  }
788  }
789 
790  sps->amp_enabled_flag = get_bits1(gb);
791  sps->sao_enabled = get_bits1(gb);
792 
793  sps->pcm_enabled_flag = get_bits1(gb);
794  if (sps->pcm_enabled_flag) {
795  sps->pcm.bit_depth = get_bits(gb, 4) + 1;
796  sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
797  sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
798  sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
799  get_ue_golomb_long(gb);
800  if (sps->pcm.bit_depth > sps->bit_depth) {
801  av_log(s->avctx, AV_LOG_ERROR,
802  "PCM bit depth (%d) is greater than normal bit depth (%d)\n",
803  sps->pcm.bit_depth, sps->bit_depth);
804  ret = AVERROR_INVALIDDATA;
805  goto err;
806  }
807 
808  sps->pcm.loop_filter_disable_flag = get_bits1(gb);
809  }
810 
811  sps->nb_st_rps = get_ue_golomb_long(gb);
812  if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {
813  av_log(s->avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
814  sps->nb_st_rps);
815  ret = AVERROR_INVALIDDATA;
816  goto err;
817  }
818  for (i = 0; i < sps->nb_st_rps; i++) {
819  if ((ret = ff_hevc_decode_short_term_rps(s, &sps->st_rps[i],
820  sps, 0)) < 0)
821  goto err;
822  }
823 
824  sps->long_term_ref_pics_present_flag = get_bits1(gb);
825  if (sps->long_term_ref_pics_present_flag) {
826  sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
827  for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
828  sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
829  sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
830  }
831  }
832 
833  sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
834  sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
835  sps->vui.sar = (AVRational){0, 1};
836  vui_present = get_bits1(gb);
837  if (vui_present)
838  decode_vui(s, sps);
839  skip_bits1(gb); // sps_extension_flag
840 
841  if (s->strict_def_disp_win) {
842  sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
843  sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
844  sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
845  sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
846  }
847  if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&
848  !(s->avctx->flags & CODEC_FLAG_UNALIGNED)) {
849  sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));
850  av_log(s->avctx, AV_LOG_WARNING, "Reducing left output window to %d "
851  "chroma samples to preserve alignment.\n",
852  sps->output_window.left_offset);
853  }
854  sps->output_width = sps->width -
855  (sps->output_window.left_offset + sps->output_window.right_offset);
856  sps->output_height = sps->height -
857  (sps->output_window.top_offset + sps->output_window.bottom_offset);
858  if (sps->output_width <= 0 || sps->output_height <= 0) {
859  av_log(s->avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",
860  sps->output_width, sps->output_height);
861  if (s->avctx->err_recognition & AV_EF_EXPLODE) {
862  ret = AVERROR_INVALIDDATA;
863  goto err;
864  }
865  av_log(s->avctx, AV_LOG_WARNING, "Displaying the whole video surface.\n");
866  sps->pic_conf_win.left_offset =
867  sps->pic_conf_win.right_offset =
868  sps->pic_conf_win.top_offset =
869  sps->pic_conf_win.bottom_offset = 0;
870  sps->output_width = sps->width;
871  sps->output_height = sps->height;
872  }
873 
874  // Inferred parameters
875  sps->log2_ctb_size = sps->log2_min_cb_size
876  + sps->log2_diff_max_min_coding_block_size;
877  sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
878 
879  sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
880  sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
881  sps->ctb_size = sps->ctb_width * sps->ctb_height;
882 
883  sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
884  sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
885  sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
886  sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
887  sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
888  sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
889 
890  sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
891 
892  if (sps->width & ((1 << sps->log2_min_cb_size) - 1) ||
893  sps->height & ((1 << sps->log2_min_cb_size) - 1)) {
894  av_log(s->avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
895  goto err;
896  }
897 
898  if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {
899  av_log(s->avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
900  goto err;
901  }
902  if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
903  av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
904  sps->max_transform_hierarchy_depth_inter);
905  goto err;
906  }
907  if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
908  av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
909  sps->max_transform_hierarchy_depth_intra);
910  goto err;
911  }
912  if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
913  av_log(s->avctx, AV_LOG_ERROR, "max transform block size out of range: %d\n",
914  sps->log2_max_trafo_size);
915  goto err;
916  }
917 
918  if (s->avctx->debug & FF_DEBUG_BITSTREAM) {
919  av_log(s->avctx, AV_LOG_DEBUG, "Parsed SPS: id %d; coded wxh: %dx%d; "
920  "cropped wxh: %dx%d; pix_fmt: %s.\n",
921  sps_id, sps->width, sps->height,
922  sps->output_width, sps->output_height,
923  av_get_pix_fmt_name(sps->pix_fmt));
924  }
925 
926  /* check if this is a repeat of an already parsed SPS, then keep the
927  * original one.
928  * otherwise drop all PPSes that depend on it */
929  if (s->sps_list[sps_id] &&
930  !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {
931  av_buffer_unref(&sps_buf);
932  } else {
933  for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) {
934  if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == sps_id)
935  av_buffer_unref(&s->pps_list[i]);
936  }
937  av_buffer_unref(&s->sps_list[sps_id]);
938  s->sps_list[sps_id] = sps_buf;
939  }
940 
941  return 0;
942 err:
943 
944  av_buffer_unref(&sps_buf);
945  return ret;
946 }
947 
948 static void hevc_pps_free(void *opaque, uint8_t *data)
949 {
950  HEVCPPS *pps = (HEVCPPS*)data;
951 
952  av_freep(&pps->column_width);
953  av_freep(&pps->row_height);
954  av_freep(&pps->col_bd);
955  av_freep(&pps->row_bd);
956  av_freep(&pps->col_idxX);
957  av_freep(&pps->ctb_addr_rs_to_ts);
958  av_freep(&pps->ctb_addr_ts_to_rs);
959  av_freep(&pps->tile_pos_rs);
960  av_freep(&pps->tile_id);
961  av_freep(&pps->min_cb_addr_zs);
962  av_freep(&pps->min_tb_addr_zs);
963 
964  av_freep(&pps);
965 }
966 
967 int ff_hevc_decode_nal_pps(HEVCContext *s)
968 {
969  GetBitContext *gb = &s->HEVClc->gb;
970  HEVCSPS *sps = NULL;
971  int pic_area_in_ctbs, pic_area_in_min_cbs, pic_area_in_min_tbs;
972  int log2_diff_ctb_min_tb_size;
973  int i, j, x, y, ctb_addr_rs, tile_id;
974  int ret = 0;
975  int pps_id = 0;
976 
977  AVBufferRef *pps_buf;
978  HEVCPPS *pps = av_mallocz(sizeof(*pps));
979 
980  if (!pps)
981  return AVERROR(ENOMEM);
982 
983  pps_buf = av_buffer_create((uint8_t*)pps, sizeof(*pps), hevc_pps_free, NULL, 0);
984  if (!pps_buf) {
985  av_freep(&pps);
986  return AVERROR(ENOMEM);
987  }
988 
989  av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");
990 
991  // Default values
992  pps->loop_filter_across_tiles_enabled_flag = 1;
993  pps->num_tile_columns = 1;
994  pps->num_tile_rows = 1;
995  pps->uniform_spacing_flag = 1;
996  pps->disable_dbf = 0;
997  pps->beta_offset = 0;
998  pps->tc_offset = 0;
999 
1000  // Coded parameters
1001  pps_id = get_ue_golomb_long(gb);
1002  if (pps_id >= MAX_PPS_COUNT) {
1003  av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
1004  ret = AVERROR_INVALIDDATA;
1005  goto err;
1006  }
1007  pps->sps_id = get_ue_golomb_long(gb);
1008  if (pps->sps_id >= MAX_SPS_COUNT) {
1009  av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
1010  ret = AVERROR_INVALIDDATA;
1011  goto err;
1012  }
1013  if (!s->sps_list[pps->sps_id]) {
1014  av_log(s->avctx, AV_LOG_ERROR, "SPS does not exist \n");
1015  ret = AVERROR_INVALIDDATA;
1016  goto err;
1017  }
1018  sps = (HEVCSPS*)s->sps_list[pps->sps_id]->data;
1019 
1020  pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
1021  pps->output_flag_present_flag = get_bits1(gb);
1022  pps->num_extra_slice_header_bits = get_bits(gb, 3);
1023 
1024  pps->sign_data_hiding_flag = get_bits1(gb);
1025 
1026  pps->cabac_init_present_flag = get_bits1(gb);
1027 
1028  pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;
1029  pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;
1030 
1031  pps->pic_init_qp_minus26 = get_se_golomb(gb);
1032 
1033  pps->constrained_intra_pred_flag = get_bits1(gb);
1034  pps->transform_skip_enabled_flag = get_bits1(gb);
1035 
1036  pps->cu_qp_delta_enabled_flag = get_bits1(gb);
1037  pps->diff_cu_qp_delta_depth = 0;
1038  if (pps->cu_qp_delta_enabled_flag)
1039  pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
1040 
1041  pps->cb_qp_offset = get_se_golomb(gb);
1042  if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
1043  av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
1044  pps->cb_qp_offset);
1045  ret = AVERROR_INVALIDDATA;
1046  goto err;
1047  }
1048  pps->cr_qp_offset = get_se_golomb(gb);
1049  if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
1050  av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
1051  pps->cr_qp_offset);
1052  ret = AVERROR_INVALIDDATA;
1053  goto err;
1054  }
1055  pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
1056 
1057  pps->weighted_pred_flag = get_bits1(gb);
1058  pps->weighted_bipred_flag = get_bits1(gb);
1059 
1060  pps->transquant_bypass_enable_flag = get_bits1(gb);
1061  pps->tiles_enabled_flag = get_bits1(gb);
1062  pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
1063 
1064  if (pps->tiles_enabled_flag) {
1065  pps->num_tile_columns = get_ue_golomb_long(gb) + 1;
1066  pps->num_tile_rows = get_ue_golomb_long(gb) + 1;
1067  if (pps->num_tile_columns == 0 ||
1068  pps->num_tile_columns >= sps->width) {
1069  av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
1070  pps->num_tile_columns - 1);
1071  ret = AVERROR_INVALIDDATA;
1072  goto err;
1073  }
1074  if (pps->num_tile_rows == 0 ||
1075  pps->num_tile_rows >= sps->height) {
1076  av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
1077  pps->num_tile_rows - 1);
1078  ret = AVERROR_INVALIDDATA;
1079  goto err;
1080  }
1081 
1082  pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1083  pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1084  if (!pps->column_width || !pps->row_height) {
1085  ret = AVERROR(ENOMEM);
1086  goto err;
1087  }
1088 
1089  pps->uniform_spacing_flag = get_bits1(gb);
1090  if (!pps->uniform_spacing_flag) {
1091  int sum = 0;
1092  for (i = 0; i < pps->num_tile_columns - 1; i++) {
1093  pps->column_width[i] = get_ue_golomb_long(gb) + 1;
1094  sum += pps->column_width[i];
1095  }
1096  if (sum >= sps->ctb_width) {
1097  av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
1098  ret = AVERROR_INVALIDDATA;
1099  goto err;
1100  }
1101  pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
1102 
1103  sum = 0;
1104  for (i = 0; i < pps->num_tile_rows - 1; i++) {
1105  pps->row_height[i] = get_ue_golomb_long(gb) + 1;
1106  sum += pps->row_height[i];
1107  }
1108  if (sum >= sps->ctb_height) {
1109  av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
1110  ret = AVERROR_INVALIDDATA;
1111  goto err;
1112  }
1113  pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
1114  }
1115  pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
1116  }
1117 
1118  pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
1119 
1120  pps->deblocking_filter_control_present_flag = get_bits1(gb);
1121  if (pps->deblocking_filter_control_present_flag) {
1122  pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
1123  pps->disable_dbf = get_bits1(gb);
1124  if (!pps->disable_dbf) {
1125  pps->beta_offset = get_se_golomb(gb) * 2;
1126  pps->tc_offset = get_se_golomb(gb) * 2;
1127  if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {
1128  av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
1129  pps->beta_offset/2);
1130  ret = AVERROR_INVALIDDATA;
1131  goto err;
1132  }
1133  if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {
1134  av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
1135  pps->tc_offset/2);
1136  ret = AVERROR_INVALIDDATA;
1137  goto err;
1138  }
1139  }
1140  }
1141 
1142  pps->pps_scaling_list_data_present_flag = get_bits1(gb);
1143  if (pps->pps_scaling_list_data_present_flag) {
1144  set_default_scaling_list_data(&pps->scaling_list);
1145  ret = scaling_list_data(s, &pps->scaling_list);
1146  if (ret < 0)
1147  goto err;
1148  }
1149  pps->lists_modification_present_flag = get_bits1(gb);
1150  pps->log2_parallel_merge_level = get_ue_golomb_long(gb) + 2;
1151  if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {
1152  av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
1153  pps->log2_parallel_merge_level - 2);
1154  ret = AVERROR_INVALIDDATA;
1155  goto err;
1156  }
1157 
1158  pps->slice_header_extension_present_flag = get_bits1(gb);
1159  pps->pps_extension_flag = get_bits1(gb);
1160 
1161  // Inferred parameters
1162  pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
1163  pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
1164  pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
1165  if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {
1166  ret = AVERROR(ENOMEM);
1167  goto err;
1168  }
1169 
1170  if (pps->uniform_spacing_flag) {
1171  if (!pps->column_width) {
1172  pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
1173  pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
1174  }
1175  if (!pps->column_width || !pps->row_height) {
1176  ret = AVERROR(ENOMEM);
1177  goto err;
1178  }
1179 
1180  for (i = 0; i < pps->num_tile_columns; i++) {
1181  pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
1182  (i * sps->ctb_width) / pps->num_tile_columns;
1183  }
1184 
1185  for (i = 0; i < pps->num_tile_rows; i++) {
1186  pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
1187  (i * sps->ctb_height) / pps->num_tile_rows;
1188  }
1189  }
1190 
1191  pps->col_bd[0] = 0;
1192  for (i = 0; i < pps->num_tile_columns; i++)
1193  pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
1194 
1195  pps->row_bd[0] = 0;
1196  for (i = 0; i < pps->num_tile_rows; i++)
1197  pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
1198 
1199  for (i = 0, j = 0; i < sps->ctb_width; i++) {
1200  if (i > pps->col_bd[j])
1201  j++;
1202  pps->col_idxX[i] = j;
1203  }
1204 
1205  /**
1206  * 6.5
1207  */
1208  pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
1209  pic_area_in_min_cbs = sps->min_cb_width * sps->min_cb_height;
1210  pic_area_in_min_tbs = sps->min_tb_width * sps->min_tb_height;
1211 
1212  pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
1213  pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
1214  pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
1215  pps->min_cb_addr_zs = av_malloc_array(pic_area_in_min_cbs, sizeof(*pps->min_cb_addr_zs));
1216  pps->min_tb_addr_zs = av_malloc_array(pic_area_in_min_tbs, sizeof(*pps->min_tb_addr_zs));
1217  if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
1218  !pps->tile_id || !pps->min_cb_addr_zs || !pps->min_tb_addr_zs) {
1219  ret = AVERROR(ENOMEM);
1220  goto err;
1221  }
1222 
1223  for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
1224  int tb_x = ctb_addr_rs % sps->ctb_width;
1225  int tb_y = ctb_addr_rs / sps->ctb_width;
1226  int tile_x = 0;
1227  int tile_y = 0;
1228  int val = 0;
1229 
1230  for (i = 0; i < pps->num_tile_columns; i++) {
1231  if (tb_x < pps->col_bd[i + 1]) {
1232  tile_x = i;
1233  break;
1234  }
1235  }
1236 
1237  for (i = 0; i < pps->num_tile_rows; i++) {
1238  if (tb_y < pps->row_bd[i + 1]) {
1239  tile_y = i;
1240  break;
1241  }
1242  }
1243 
1244  for (i = 0; i < tile_x; i++ )
1245  val += pps->row_height[tile_y] * pps->column_width[i];
1246  for (i = 0; i < tile_y; i++ )
1247  val += sps->ctb_width * pps->row_height[i];
1248 
1249  val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
1250  tb_x - pps->col_bd[tile_x];
1251 
1252  pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
1253  pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
1254  }
1255 
1256  for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
1257  for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
1258  for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
1259  for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
1260  pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
1261 
1262  pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
1263  if (!pps->tile_pos_rs) {
1264  ret = AVERROR(ENOMEM);
1265  goto err;
1266  }
1267 
1268  for (j = 0; j < pps->num_tile_rows; j++)
1269  for (i = 0; i < pps->num_tile_columns; i++)
1270  pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
1271 
1272  for (y = 0; y < sps->min_cb_height; y++) {
1273  for (x = 0; x < sps->min_cb_width; x++) {
1274  int tb_x = x >> sps->log2_diff_max_min_coding_block_size;
1275  int tb_y = y >> sps->log2_diff_max_min_coding_block_size;
1276  int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1277  int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1278  (sps->log2_diff_max_min_coding_block_size * 2);
1279  for (i = 0; i < sps->log2_diff_max_min_coding_block_size; i++) {
1280  int m = 1 << i;
1281  val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1282  }
1283  pps->min_cb_addr_zs[y * sps->min_cb_width + x] = val;
1284  }
1285  }
1286 
1287  log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;
1288  for (y = 0; y < sps->min_tb_height; y++) {
1289  for (x = 0; x < sps->min_tb_width; x++) {
1290  int tb_x = x >> log2_diff_ctb_min_tb_size;
1291  int tb_y = y >> log2_diff_ctb_min_tb_size;
1292  int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;
1293  int val = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<
1294  (log2_diff_ctb_min_tb_size * 2);
1295  for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {
1296  int m = 1 << i;
1297  val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
1298  }
1299  pps->min_tb_addr_zs[y * sps->min_tb_width + x] = val;
1300  }
1301  }
1302 
1303  av_buffer_unref(&s->pps_list[pps_id]);
1304  s->pps_list[pps_id] = pps_buf;
1305 
1306  return 0;
1307 
1308 err:
1309  av_buffer_unref(&pps_buf);
1310  return ret;
1311 }
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