h264_ps.c
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1 /*
2  * H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding
3  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
4  *
5  * This file is part of Libav.
6  *
7  * Libav is free software; you can redistribute it and/or
8  * modify it under the terms of the GNU Lesser General Public
9  * License as published by the Free Software Foundation; either
10  * version 2.1 of the License, or (at your option) any later version.
11  *
12  * Libav is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15  * Lesser General Public License for more details.
16  *
17  * You should have received a copy of the GNU Lesser General Public
18  * License along with Libav; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21 
28 #include "libavutil/imgutils.h"
29 #include "internal.h"
30 #include "dsputil.h"
31 #include "avcodec.h"
32 #include "h264.h"
33 #include "h264data.h" //FIXME FIXME FIXME (just for zigzag_scan)
34 #include "golomb.h"
35 
36 
37 //#undef NDEBUG
38 #include <assert.h>
39 
40 static const AVRational pixel_aspect[17]={
41  {0, 1},
42  {1, 1},
43  {12, 11},
44  {10, 11},
45  {16, 11},
46  {40, 33},
47  {24, 11},
48  {20, 11},
49  {32, 11},
50  {80, 33},
51  {18, 11},
52  {15, 11},
53  {64, 33},
54  {160,99},
55  {4, 3},
56  {3, 2},
57  {2, 1},
58 };
59 
60 #define QP(qP,depth) ( (qP)+6*((depth)-8) )
61 
62 #define CHROMA_QP_TABLE_END(d) \
63  QP(0,d), QP(1,d), QP(2,d), QP(3,d), QP(4,d), QP(5,d),\
64  QP(6,d), QP(7,d), QP(8,d), QP(9,d), QP(10,d), QP(11,d),\
65  QP(12,d), QP(13,d), QP(14,d), QP(15,d), QP(16,d), QP(17,d),\
66  QP(18,d), QP(19,d), QP(20,d), QP(21,d), QP(22,d), QP(23,d),\
67  QP(24,d), QP(25,d), QP(26,d), QP(27,d), QP(28,d), QP(29,d),\
68  QP(29,d), QP(30,d), QP(31,d), QP(32,d), QP(32,d), QP(33,d),\
69  QP(34,d), QP(34,d), QP(35,d), QP(35,d), QP(36,d), QP(36,d),\
70  QP(37,d), QP(37,d), QP(37,d), QP(38,d), QP(38,d), QP(38,d),\
71  QP(39,d), QP(39,d), QP(39,d), QP(39,d)
72 
73 const uint8_t ff_h264_chroma_qp[3][QP_MAX_NUM+1] = {
74  {
76  },
77  {
78  0, 1, 2, 3, 4, 5,
80  },
81  {
82  0, 1, 2, 3, 4, 5,
83  6, 7, 8, 9, 10, 11,
85  },
86 };
87 
88 static const uint8_t default_scaling4[2][16]={
89 { 6,13,20,28,
90  13,20,28,32,
91  20,28,32,37,
92  28,32,37,42
93 },{
94  10,14,20,24,
95  14,20,24,27,
96  20,24,27,30,
97  24,27,30,34
98 }};
99 
100 static const uint8_t default_scaling8[2][64]={
101 { 6,10,13,16,18,23,25,27,
102  10,11,16,18,23,25,27,29,
103  13,16,18,23,25,27,29,31,
104  16,18,23,25,27,29,31,33,
105  18,23,25,27,29,31,33,36,
106  23,25,27,29,31,33,36,38,
107  25,27,29,31,33,36,38,40,
108  27,29,31,33,36,38,40,42
109 },{
110  9,13,15,17,19,21,22,24,
111  13,13,17,19,21,22,24,25,
112  15,17,19,21,22,24,25,27,
113  17,19,21,22,24,25,27,28,
114  19,21,22,24,25,27,28,30,
115  21,22,24,25,27,28,30,32,
116  22,24,25,27,28,30,32,33,
117  24,25,27,28,30,32,33,35
118 }};
119 
120 static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
121  MpegEncContext * const s = &h->s;
122  int cpb_count, i;
123  cpb_count = get_ue_golomb_31(&s->gb) + 1;
124 
125  if(cpb_count > 32U){
126  av_log(h->s.avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count);
127  return -1;
128  }
129 
130  get_bits(&s->gb, 4); /* bit_rate_scale */
131  get_bits(&s->gb, 4); /* cpb_size_scale */
132  for(i=0; i<cpb_count; i++){
133  get_ue_golomb_long(&s->gb); /* bit_rate_value_minus1 */
134  get_ue_golomb_long(&s->gb); /* cpb_size_value_minus1 */
135  get_bits1(&s->gb); /* cbr_flag */
136  }
137  sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
138  sps->cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
139  sps->dpb_output_delay_length = get_bits(&s->gb, 5) + 1;
140  sps->time_offset_length = get_bits(&s->gb, 5);
141  sps->cpb_cnt = cpb_count;
142  return 0;
143 }
144 
145 static inline int decode_vui_parameters(H264Context *h, SPS *sps){
146  MpegEncContext * const s = &h->s;
147  int aspect_ratio_info_present_flag;
148  unsigned int aspect_ratio_idc;
149 
150  aspect_ratio_info_present_flag= get_bits1(&s->gb);
151 
152  if( aspect_ratio_info_present_flag ) {
153  aspect_ratio_idc= get_bits(&s->gb, 8);
154  if( aspect_ratio_idc == EXTENDED_SAR ) {
155  sps->sar.num= get_bits(&s->gb, 16);
156  sps->sar.den= get_bits(&s->gb, 16);
157  }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){
158  sps->sar= pixel_aspect[aspect_ratio_idc];
159  }else{
160  av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
161  return -1;
162  }
163  }else{
164  sps->sar.num=
165  sps->sar.den= 0;
166  }
167 // s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
168 
169  if(get_bits1(&s->gb)){ /* overscan_info_present_flag */
170  get_bits1(&s->gb); /* overscan_appropriate_flag */
171  }
172 
175  get_bits(&s->gb, 3); /* video_format */
176  sps->full_range = get_bits1(&s->gb); /* video_full_range_flag */
177 
180  sps->color_primaries = get_bits(&s->gb, 8); /* colour_primaries */
181  sps->color_trc = get_bits(&s->gb, 8); /* transfer_characteristics */
182  sps->colorspace = get_bits(&s->gb, 8); /* matrix_coefficients */
183  if (sps->color_primaries >= AVCOL_PRI_NB)
185  if (sps->color_trc >= AVCOL_TRC_NB)
187  if (sps->colorspace >= AVCOL_SPC_NB)
189  }
190  }
191 
192  if(get_bits1(&s->gb)){ /* chroma_location_info_present_flag */
193  s->avctx->chroma_sample_location = get_ue_golomb(&s->gb)+1; /* chroma_sample_location_type_top_field */
194  get_ue_golomb(&s->gb); /* chroma_sample_location_type_bottom_field */
195  }
196 
198  if(sps->timing_info_present_flag){
199  sps->num_units_in_tick = get_bits_long(&s->gb, 32);
200  sps->time_scale = get_bits_long(&s->gb, 32);
201  if(!sps->num_units_in_tick || !sps->time_scale){
202  av_log(h->s.avctx, AV_LOG_ERROR, "time_scale/num_units_in_tick invalid or unsupported (%d/%d)\n", sps->time_scale, sps->num_units_in_tick);
203  return -1;
204  }
205  sps->fixed_frame_rate_flag = get_bits1(&s->gb);
206  }
207 
210  if(decode_hrd_parameters(h, sps) < 0)
211  return -1;
214  if(decode_hrd_parameters(h, sps) < 0)
215  return -1;
217  get_bits1(&s->gb); /* low_delay_hrd_flag */
219 
222  get_bits1(&s->gb); /* motion_vectors_over_pic_boundaries_flag */
223  get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */
224  get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */
225  get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */
226  get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */
228  get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
229 
230  if (get_bits_left(&s->gb) < 0) {
231  sps->num_reorder_frames=0;
233  }
234 
235  if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
236  av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
237  return -1;
238  }
239  }
240  if (get_bits_left(&s->gb) < 0) {
241  av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb));
242  return AVERROR_INVALIDDATA;
243  }
244 
245  return 0;
246 }
247 
248 static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
249  const uint8_t *jvt_list, const uint8_t *fallback_list){
250  MpegEncContext * const s = &h->s;
251  int i, last = 8, next = 8;
252  const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
253  if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
254  memcpy(factors, fallback_list, size*sizeof(uint8_t));
255  else
256  for(i=0;i<size;i++){
257  if(next)
258  next = (last + get_se_golomb(&s->gb)) & 0xff;
259  if(!i && !next){ /* matrix not written, we use the preset one */
260  memcpy(factors, jvt_list, size*sizeof(uint8_t));
261  break;
262  }
263  last = factors[scan[i]] = next ? next : last;
264  }
265 }
266 
267 static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
268  uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
269  MpegEncContext * const s = &h->s;
270  int fallback_sps = !is_sps && sps->scaling_matrix_present;
271  const uint8_t *fallback[4] = {
272  fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
273  fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
274  fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
275  fallback_sps ? sps->scaling_matrix8[3] : default_scaling8[1]
276  };
277  if(get_bits1(&s->gb)){
278  sps->scaling_matrix_present |= is_sps;
279  decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
280  decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
281  decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
282  decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
283  decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
284  decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
285  if(is_sps || pps->transform_8x8_mode){
286  decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]); // Intra, Y
287  if(sps->chroma_format_idc == 3){
288  decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[0],scaling_matrix8[0]); // Intra, Cr
289  decode_scaling_list(h,scaling_matrix8[2],64,default_scaling8[0],scaling_matrix8[1]); // Intra, Cb
290  }
291  decode_scaling_list(h,scaling_matrix8[3],64,default_scaling8[1],fallback[3]); // Inter, Y
292  if(sps->chroma_format_idc == 3){
293  decode_scaling_list(h,scaling_matrix8[4],64,default_scaling8[1],scaling_matrix8[3]); // Inter, Cr
294  decode_scaling_list(h,scaling_matrix8[5],64,default_scaling8[1],scaling_matrix8[4]); // Inter, Cb
295  }
296  }
297  }
298 }
299 
301  MpegEncContext * const s = &h->s;
302  int profile_idc, level_idc, constraint_set_flags = 0;
303  unsigned int sps_id;
304  int i;
305  SPS *sps;
306 
307  profile_idc= get_bits(&s->gb, 8);
308  constraint_set_flags |= get_bits1(&s->gb) << 0; //constraint_set0_flag
309  constraint_set_flags |= get_bits1(&s->gb) << 1; //constraint_set1_flag
310  constraint_set_flags |= get_bits1(&s->gb) << 2; //constraint_set2_flag
311  constraint_set_flags |= get_bits1(&s->gb) << 3; //constraint_set3_flag
312  get_bits(&s->gb, 4); // reserved
313  level_idc= get_bits(&s->gb, 8);
314  sps_id= get_ue_golomb_31(&s->gb);
315 
316  if(sps_id >= MAX_SPS_COUNT) {
317  av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
318  return -1;
319  }
320  sps= av_mallocz(sizeof(SPS));
321  if(sps == NULL)
322  return -1;
323 
324  sps->time_offset_length = 24;
325  sps->profile_idc= profile_idc;
326  sps->constraint_set_flags = constraint_set_flags;
327  sps->level_idc= level_idc;
328 
329  memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
330  memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
331  sps->scaling_matrix_present = 0;
332 
333  if(sps->profile_idc >= 100){ //high profile
335  if(sps->chroma_format_idc > 3) {
336  av_log(h->s.avctx, AV_LOG_ERROR, "chroma_format_idc (%u) out of range\n", sps->chroma_format_idc);
337  return -1;
338  } else if(sps->chroma_format_idc == 3) {
340  }
341  sps->bit_depth_luma = get_ue_golomb(&s->gb) + 8;
342  sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
343  sps->transform_bypass = get_bits1(&s->gb);
345  }else{
346  sps->chroma_format_idc= 1;
347  sps->bit_depth_luma = 8;
348  sps->bit_depth_chroma = 8;
349  }
350 
351  sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
352  sps->poc_type= get_ue_golomb_31(&s->gb);
353 
354  if(sps->poc_type == 0){ //FIXME #define
355  sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
356  } else if(sps->poc_type == 1){//FIXME #define
360  sps->poc_cycle_length = get_ue_golomb(&s->gb);
361 
362  if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
363  av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
364  goto fail;
365  }
366 
367  for(i=0; i<sps->poc_cycle_length; i++)
368  sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
369  }else if(sps->poc_type != 2){
370  av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
371  goto fail;
372  }
373 
375  if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count >= 32U){
376  av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
377  goto fail;
378  }
380  sps->mb_width = get_ue_golomb(&s->gb) + 1;
381  sps->mb_height= get_ue_golomb(&s->gb) + 1;
382  if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 ||
383  av_image_check_size(16*sps->mb_width, 16*sps->mb_height, 0, h->s.avctx)){
384  av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
385  goto fail;
386  }
387 
388  sps->frame_mbs_only_flag= get_bits1(&s->gb);
389  if(!sps->frame_mbs_only_flag)
390  sps->mb_aff= get_bits1(&s->gb);
391  else
392  sps->mb_aff= 0;
393 
396  av_log(h->s.avctx, AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
397  goto fail;
398  }
399 
400 #ifndef ALLOW_INTERLACE
401  if(sps->mb_aff)
402  av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
403 #endif
404  sps->crop= get_bits1(&s->gb);
405  if(sps->crop){
406  int crop_vertical_limit = sps->chroma_format_idc & 2 ? 16 : 8;
407  int crop_horizontal_limit = sps->chroma_format_idc == 3 ? 16 : 8;
408  sps->crop_left = get_ue_golomb(&s->gb);
409  sps->crop_right = get_ue_golomb(&s->gb);
410  sps->crop_top = get_ue_golomb(&s->gb);
411  sps->crop_bottom= get_ue_golomb(&s->gb);
412  if(sps->crop_left || sps->crop_top){
413  av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
414  }
415  if(sps->crop_right >= crop_horizontal_limit || sps->crop_bottom >= crop_vertical_limit){
416  av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
417  }
418  }else{
419  sps->crop_left =
420  sps->crop_right =
421  sps->crop_top =
422  sps->crop_bottom= 0;
423  }
424 
426  if( sps->vui_parameters_present_flag )
427  if (decode_vui_parameters(h, sps) < 0)
428  goto fail;
429 
430  if(!sps->sar.den)
431  sps->sar.den= 1;
432 
434  av_log(h->s.avctx, AV_LOG_DEBUG, "sps:%u profile:%d/%d poc:%d ref:%d %dx%d %s %s crop:%d/%d/%d/%d %s %s %d/%d\n",
435  sps_id, sps->profile_idc, sps->level_idc,
436  sps->poc_type,
437  sps->ref_frame_count,
438  sps->mb_width, sps->mb_height,
439  sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
440  sps->direct_8x8_inference_flag ? "8B8" : "",
441  sps->crop_left, sps->crop_right,
442  sps->crop_top, sps->crop_bottom,
443  sps->vui_parameters_present_flag ? "VUI" : "",
444  ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc],
446  sps->timing_info_present_flag ? sps->time_scale : 0
447  );
448  }
449 
450  av_free(h->sps_buffers[sps_id]);
451  h->sps_buffers[sps_id]= sps;
452  h->sps = *sps;
453  return 0;
454 fail:
455  av_free(sps);
456  return -1;
457 }
458 
459 static void
460 build_qp_table(PPS *pps, int t, int index, const int depth)
461 {
462  int i;
463  const int max_qp = 51 + 6*(depth-8);
464  for(i = 0; i < max_qp+1; i++)
465  pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[depth-8][av_clip(i + index, 0, max_qp)];
466 }
467 
469  MpegEncContext * const s = &h->s;
470  unsigned int pps_id= get_ue_golomb(&s->gb);
471  PPS *pps;
472  const int qp_bd_offset = 6*(h->sps.bit_depth_luma-8);
473  int bits_left;
474 
475  if(pps_id >= MAX_PPS_COUNT) {
476  av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
477  return -1;
478  } else if (h->sps.bit_depth_luma > 10) {
479  av_log(h->s.avctx, AV_LOG_ERROR, "Unimplemented luma bit depth=%d (max=10)\n", h->sps.bit_depth_luma);
480  return AVERROR_PATCHWELCOME;
481  }
482 
483  pps= av_mallocz(sizeof(PPS));
484  if(pps == NULL)
485  return -1;
486  pps->sps_id= get_ue_golomb_31(&s->gb);
487  if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){
488  av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
489  goto fail;
490  }
491 
492  pps->cabac= get_bits1(&s->gb);
493  pps->pic_order_present= get_bits1(&s->gb);
494  pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
495  if(pps->slice_group_count > 1 ){
497  av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
498  switch(pps->mb_slice_group_map_type){
499  case 0:
500 #if 0
501 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
502 | run_length[ i ] |1 |ue(v) |
503 #endif
504  break;
505  case 2:
506 #if 0
507 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
508 |{ | | |
509 | top_left_mb[ i ] |1 |ue(v) |
510 | bottom_right_mb[ i ] |1 |ue(v) |
511 | } | | |
512 #endif
513  break;
514  case 3:
515  case 4:
516  case 5:
517 #if 0
518 | slice_group_change_direction_flag |1 |u(1) |
519 | slice_group_change_rate_minus1 |1 |ue(v) |
520 #endif
521  break;
522  case 6:
523 #if 0
524 | slice_group_id_cnt_minus1 |1 |ue(v) |
525 | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
526 |) | | |
527 | slice_group_id[ i ] |1 |u(v) |
528 #endif
529  break;
530  }
531  }
532  pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
533  pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
534  if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
535  av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
536  goto fail;
537  }
538 
539  pps->weighted_pred= get_bits1(&s->gb);
540  pps->weighted_bipred_idc= get_bits(&s->gb, 2);
541  pps->init_qp= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
542  pps->init_qs= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
547 
548  pps->transform_8x8_mode= 0;
549  h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
550  memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
551  memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
552 
553  bits_left = bit_length - get_bits_count(&s->gb);
554  if (bits_left && (bits_left > 8 ||
555  show_bits(&s->gb, bits_left) != 1 << (bits_left - 1))) {
556  pps->transform_8x8_mode= get_bits1(&s->gb);
558  pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
559  } else {
561  }
562 
565  if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
566  pps->chroma_qp_diff= 1;
567 
569  av_log(h->s.avctx, AV_LOG_DEBUG, "pps:%u sps:%u %s slice_groups:%d ref:%d/%d %s qp:%d/%d/%d/%d %s %s %s %s\n",
570  pps_id, pps->sps_id,
571  pps->cabac ? "CABAC" : "CAVLC",
572  pps->slice_group_count,
573  pps->ref_count[0], pps->ref_count[1],
574  pps->weighted_pred ? "weighted" : "",
575  pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
576  pps->deblocking_filter_parameters_present ? "LPAR" : "",
577  pps->constrained_intra_pred ? "CONSTR" : "",
578  pps->redundant_pic_cnt_present ? "REDU" : "",
579  pps->transform_8x8_mode ? "8x8DCT" : ""
580  );
581  }
582 
583  av_free(h->pps_buffers[pps_id]);
584  h->pps_buffers[pps_id]= pps;
585  return 0;
586 fail:
587  av_free(pps);
588  return -1;
589 }