Split (picture|seq) parameter set decoding out of h264.c.
[ffmpeg.git] / libavcodec / h264_ps.c
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 FFmpeg.
6  *
7  * FFmpeg 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  * FFmpeg 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 FFmpeg; if not, write to the Free Software
19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20  */
21
22 /**
23  * @file libavcodec/h264_ps.c
24  * H.264 / AVC / MPEG4 part10 parameter set decoding.
25  * @author Michael Niedermayer <michaelni@gmx.at>
26  */
27
28 #include "internal.h"
29 #include "dsputil.h"
30 #include "avcodec.h"
31 #include "h264.h"
32 #include "h264data.h" //FIXME FIXME FIXME (just for zigzag_scan)
33 #include "golomb.h"
34
35
36 //#undef NDEBUG
37 #include <assert.h>
38
39 static const AVRational pixel_aspect[17]={
40  {0, 1},
41  {1, 1},
42  {12, 11},
43  {10, 11},
44  {16, 11},
45  {40, 33},
46  {24, 11},
47  {20, 11},
48  {32, 11},
49  {80, 33},
50  {18, 11},
51  {15, 11},
52  {64, 33},
53  {160,99},
54  {4, 3},
55  {3, 2},
56  {2, 1},
57 };
58
59 const uint8_t ff_h264_chroma_qp[52]={
60     0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,
61    12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,
62    28,29,29,30,31,32,32,33,34,34,35,35,36,36,37,37,
63    37,38,38,38,39,39,39,39
64 };
65
66 static const uint8_t default_scaling4[2][16]={
67 {   6,13,20,28,
68    13,20,28,32,
69    20,28,32,37,
70    28,32,37,42
71 },{
72    10,14,20,24,
73    14,20,24,27,
74    20,24,27,30,
75    24,27,30,34
76 }};
77
78 static const uint8_t default_scaling8[2][64]={
79 {   6,10,13,16,18,23,25,27,
80    10,11,16,18,23,25,27,29,
81    13,16,18,23,25,27,29,31,
82    16,18,23,25,27,29,31,33,
83    18,23,25,27,29,31,33,36,
84    23,25,27,29,31,33,36,38,
85    25,27,29,31,33,36,38,40,
86    27,29,31,33,36,38,40,42
87 },{
88     9,13,15,17,19,21,22,24,
89    13,13,17,19,21,22,24,25,
90    15,17,19,21,22,24,25,27,
91    17,19,21,22,24,25,27,28,
92    19,21,22,24,25,27,28,30,
93    21,22,24,25,27,28,30,32,
94    22,24,25,27,28,30,32,33,
95    24,25,27,28,30,32,33,35
96 }};
97
98 static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
99     MpegEncContext * const s = &h->s;
100     int cpb_count, i;
101     cpb_count = get_ue_golomb_31(&s->gb) + 1;
102
103     if(cpb_count > 32U){
104         av_log(h->s.avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count);
105         return -1;
106     }
107
108     get_bits(&s->gb, 4); /* bit_rate_scale */
109     get_bits(&s->gb, 4); /* cpb_size_scale */
110     for(i=0; i<cpb_count; i++){
111         get_ue_golomb(&s->gb); /* bit_rate_value_minus1 */
112         get_ue_golomb(&s->gb); /* cpb_size_value_minus1 */
113         get_bits1(&s->gb);     /* cbr_flag */
114     }
115     sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
116     sps->cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
117     sps->dpb_output_delay_length = get_bits(&s->gb, 5) + 1;
118     sps->time_offset_length = get_bits(&s->gb, 5);
119     sps->cpb_cnt = cpb_count;
120     return 0;
121 }
122
123 static inline int decode_vui_parameters(H264Context *h, SPS *sps){
124     MpegEncContext * const s = &h->s;
125     int aspect_ratio_info_present_flag;
126     unsigned int aspect_ratio_idc;
127
128     aspect_ratio_info_present_flag= get_bits1(&s->gb);
129
130     if( aspect_ratio_info_present_flag ) {
131         aspect_ratio_idc= get_bits(&s->gb, 8);
132         if( aspect_ratio_idc == EXTENDED_SAR ) {
133             sps->sar.num= get_bits(&s->gb, 16);
134             sps->sar.den= get_bits(&s->gb, 16);
135         }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){
136             sps->sar=  pixel_aspect[aspect_ratio_idc];
137         }else{
138             av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
139             return -1;
140         }
141     }else{
142         sps->sar.num=
143         sps->sar.den= 0;
144     }
145 //            s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
146
147     if(get_bits1(&s->gb)){      /* overscan_info_present_flag */
148         get_bits1(&s->gb);      /* overscan_appropriate_flag */
149     }
150
151     sps->video_signal_type_present_flag = get_bits1(&s->gb);
152     if(sps->video_signal_type_present_flag){
153         get_bits(&s->gb, 3);    /* video_format */
154         sps->full_range = get_bits1(&s->gb); /* video_full_range_flag */
155
156         sps->colour_description_present_flag = get_bits1(&s->gb);
157         if(sps->colour_description_present_flag){
158             sps->color_primaries = get_bits(&s->gb, 8); /* colour_primaries */
159             sps->color_trc       = get_bits(&s->gb, 8); /* transfer_characteristics */
160             sps->colorspace      = get_bits(&s->gb, 8); /* matrix_coefficients */
161             if (sps->color_primaries >= AVCOL_PRI_NB)
162                 sps->color_primaries  = AVCOL_PRI_UNSPECIFIED;
163             if (sps->color_trc >= AVCOL_TRC_NB)
164                 sps->color_trc  = AVCOL_TRC_UNSPECIFIED;
165             if (sps->colorspace >= AVCOL_SPC_NB)
166                 sps->colorspace  = AVCOL_SPC_UNSPECIFIED;
167         }
168     }
169
170     if(get_bits1(&s->gb)){      /* chroma_location_info_present_flag */
171         s->avctx->chroma_sample_location = get_ue_golomb(&s->gb)+1;  /* chroma_sample_location_type_top_field */
172         get_ue_golomb(&s->gb);  /* chroma_sample_location_type_bottom_field */
173     }
174
175     sps->timing_info_present_flag = get_bits1(&s->gb);
176     if(sps->timing_info_present_flag){
177         sps->num_units_in_tick = get_bits_long(&s->gb, 32);
178         sps->time_scale = get_bits_long(&s->gb, 32);
179         if(sps->num_units_in_tick-1 > 0x7FFFFFFEU || sps->time_scale-1 > 0x7FFFFFFEU){
180             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);
181             return -1;
182         }
183         sps->fixed_frame_rate_flag = get_bits1(&s->gb);
184     }
185
186     sps->nal_hrd_parameters_present_flag = get_bits1(&s->gb);
187     if(sps->nal_hrd_parameters_present_flag)
188         if(decode_hrd_parameters(h, sps) < 0)
189             return -1;
190     sps->vcl_hrd_parameters_present_flag = get_bits1(&s->gb);
191     if(sps->vcl_hrd_parameters_present_flag)
192         if(decode_hrd_parameters(h, sps) < 0)
193             return -1;
194     if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag)
195         get_bits1(&s->gb);     /* low_delay_hrd_flag */
196     sps->pic_struct_present_flag = get_bits1(&s->gb);
197
198     sps->bitstream_restriction_flag = get_bits1(&s->gb);
199     if(sps->bitstream_restriction_flag){
200         get_bits1(&s->gb);     /* motion_vectors_over_pic_boundaries_flag */
201         get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */
202         get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */
203         get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */
204         get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */
205         sps->num_reorder_frames= get_ue_golomb(&s->gb);
206         get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
207
208         if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
209             av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
210             return -1;
211         }
212     }
213
214     return 0;
215 }
216
217 static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
218                                 const uint8_t *jvt_list, const uint8_t *fallback_list){
219     MpegEncContext * const s = &h->s;
220     int i, last = 8, next = 8;
221     const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
222     if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
223         memcpy(factors, fallback_list, size*sizeof(uint8_t));
224     else
225     for(i=0;i<size;i++){
226         if(next)
227             next = (last + get_se_golomb(&s->gb)) & 0xff;
228         if(!i && !next){ /* matrix not written, we use the preset one */
229             memcpy(factors, jvt_list, size*sizeof(uint8_t));
230             break;
231         }
232         last = factors[scan[i]] = next ? next : last;
233     }
234 }
235
236 static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
237                                    uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
238     MpegEncContext * const s = &h->s;
239     int fallback_sps = !is_sps && sps->scaling_matrix_present;
240     const uint8_t *fallback[4] = {
241         fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
242         fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
243         fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
244         fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1]
245     };
246     if(get_bits1(&s->gb)){
247         sps->scaling_matrix_present |= is_sps;
248         decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
249         decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
250         decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
251         decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
252         decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
253         decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
254         if(is_sps || pps->transform_8x8_mode){
255             decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]);  // Intra, Y
256             decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[1],fallback[3]);  // Inter, Y
257         }
258     }
259 }
260
261 int ff_h264_decode_seq_parameter_set(H264Context *h){
262     MpegEncContext * const s = &h->s;
263     int profile_idc, level_idc;
264     unsigned int sps_id;
265     int i;
266     SPS *sps;
267
268     profile_idc= get_bits(&s->gb, 8);
269     get_bits1(&s->gb);   //constraint_set0_flag
270     get_bits1(&s->gb);   //constraint_set1_flag
271     get_bits1(&s->gb);   //constraint_set2_flag
272     get_bits1(&s->gb);   //constraint_set3_flag
273     get_bits(&s->gb, 4); // reserved
274     level_idc= get_bits(&s->gb, 8);
275     sps_id= get_ue_golomb_31(&s->gb);
276
277     if(sps_id >= MAX_SPS_COUNT) {
278         av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
279         return -1;
280     }
281     sps= av_mallocz(sizeof(SPS));
282     if(sps == NULL)
283         return -1;
284
285     sps->profile_idc= profile_idc;
286     sps->level_idc= level_idc;
287
288     memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
289     memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
290     sps->scaling_matrix_present = 0;
291
292     if(sps->profile_idc >= 100){ //high profile
293         sps->chroma_format_idc= get_ue_golomb_31(&s->gb);
294         if(sps->chroma_format_idc == 3)
295             sps->residual_color_transform_flag = get_bits1(&s->gb);
296         sps->bit_depth_luma   = get_ue_golomb(&s->gb) + 8;
297         sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
298         sps->transform_bypass = get_bits1(&s->gb);
299         decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
300     }else{
301         sps->chroma_format_idc= 1;
302         sps->bit_depth_luma   = 8;
303         sps->bit_depth_chroma = 8;
304     }
305
306     sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
307     sps->poc_type= get_ue_golomb_31(&s->gb);
308
309     if(sps->poc_type == 0){ //FIXME #define
310         sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
311     } else if(sps->poc_type == 1){//FIXME #define
312         sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
313         sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
314         sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
315         sps->poc_cycle_length                = get_ue_golomb(&s->gb);
316
317         if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
318             av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
319             goto fail;
320         }
321
322         for(i=0; i<sps->poc_cycle_length; i++)
323             sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
324     }else if(sps->poc_type != 2){
325         av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
326         goto fail;
327     }
328
329     sps->ref_frame_count= get_ue_golomb_31(&s->gb);
330     if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count >= 32U){
331         av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
332         goto fail;
333     }
334     sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
335     sps->mb_width = get_ue_golomb(&s->gb) + 1;
336     sps->mb_height= get_ue_golomb(&s->gb) + 1;
337     if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 ||
338        avcodec_check_dimensions(NULL, 16*sps->mb_width, 16*sps->mb_height)){
339         av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
340         goto fail;
341     }
342
343     sps->frame_mbs_only_flag= get_bits1(&s->gb);
344     if(!sps->frame_mbs_only_flag)
345         sps->mb_aff= get_bits1(&s->gb);
346     else
347         sps->mb_aff= 0;
348
349     sps->direct_8x8_inference_flag= get_bits1(&s->gb);
350
351 #ifndef ALLOW_INTERLACE
352     if(sps->mb_aff)
353         av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
354 #endif
355     sps->crop= get_bits1(&s->gb);
356     if(sps->crop){
357         sps->crop_left  = get_ue_golomb(&s->gb);
358         sps->crop_right = get_ue_golomb(&s->gb);
359         sps->crop_top   = get_ue_golomb(&s->gb);
360         sps->crop_bottom= get_ue_golomb(&s->gb);
361         if(sps->crop_left || sps->crop_top){
362             av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
363         }
364         if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){
365             av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
366         }
367     }else{
368         sps->crop_left  =
369         sps->crop_right =
370         sps->crop_top   =
371         sps->crop_bottom= 0;
372     }
373
374     sps->vui_parameters_present_flag= get_bits1(&s->gb);
375     if( sps->vui_parameters_present_flag )
376         if (decode_vui_parameters(h, sps) < 0)
377             goto fail;
378
379     if(s->avctx->debug&FF_DEBUG_PICT_INFO){
380         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",
381                sps_id, sps->profile_idc, sps->level_idc,
382                sps->poc_type,
383                sps->ref_frame_count,
384                sps->mb_width, sps->mb_height,
385                sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
386                sps->direct_8x8_inference_flag ? "8B8" : "",
387                sps->crop_left, sps->crop_right,
388                sps->crop_top, sps->crop_bottom,
389                sps->vui_parameters_present_flag ? "VUI" : "",
390                ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc],
391                sps->timing_info_present_flag ? sps->num_units_in_tick : 0,
392                sps->timing_info_present_flag ? sps->time_scale : 0
393                );
394     }
395
396     av_free(h->sps_buffers[sps_id]);
397     h->sps_buffers[sps_id]= sps;
398     h->sps = *sps;
399     return 0;
400 fail:
401     av_free(sps);
402     return -1;
403 }
404
405 static void
406 build_qp_table(PPS *pps, int t, int index)
407 {
408     int i;
409     for(i = 0; i < 52; i++)
410         pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[av_clip(i + index, 0, 51)];
411 }
412
413 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
414     MpegEncContext * const s = &h->s;
415     unsigned int pps_id= get_ue_golomb(&s->gb);
416     PPS *pps;
417
418     if(pps_id >= MAX_PPS_COUNT) {
419         av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
420         return -1;
421     }
422
423     pps= av_mallocz(sizeof(PPS));
424     if(pps == NULL)
425         return -1;
426     pps->sps_id= get_ue_golomb_31(&s->gb);
427     if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){
428         av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
429         goto fail;
430     }
431
432     pps->cabac= get_bits1(&s->gb);
433     pps->pic_order_present= get_bits1(&s->gb);
434     pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
435     if(pps->slice_group_count > 1 ){
436         pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
437         av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
438         switch(pps->mb_slice_group_map_type){
439         case 0:
440 #if 0
441 |   for( i = 0; i <= num_slice_groups_minus1; i++ ) |   |        |
442 |    run_length[ i ]                                |1  |ue(v)   |
443 #endif
444             break;
445         case 2:
446 #if 0
447 |   for( i = 0; i < num_slice_groups_minus1; i++ )  |   |        |
448 |{                                                  |   |        |
449 |    top_left_mb[ i ]                               |1  |ue(v)   |
450 |    bottom_right_mb[ i ]                           |1  |ue(v)   |
451 |   }                                               |   |        |
452 #endif
453             break;
454         case 3:
455         case 4:
456         case 5:
457 #if 0
458 |   slice_group_change_direction_flag               |1  |u(1)    |
459 |   slice_group_change_rate_minus1                  |1  |ue(v)   |
460 #endif
461             break;
462         case 6:
463 #if 0
464 |   slice_group_id_cnt_minus1                       |1  |ue(v)   |
465 |   for( i = 0; i <= slice_group_id_cnt_minus1; i++ |   |        |
466 |)                                                  |   |        |
467 |    slice_group_id[ i ]                            |1  |u(v)    |
468 #endif
469             break;
470         }
471     }
472     pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
473     pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
474     if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
475         av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
476         goto fail;
477     }
478
479     pps->weighted_pred= get_bits1(&s->gb);
480     pps->weighted_bipred_idc= get_bits(&s->gb, 2);
481     pps->init_qp= get_se_golomb(&s->gb) + 26;
482     pps->init_qs= get_se_golomb(&s->gb) + 26;
483     pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
484     pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
485     pps->constrained_intra_pred= get_bits1(&s->gb);
486     pps->redundant_pic_cnt_present = get_bits1(&s->gb);
487
488     pps->transform_8x8_mode= 0;
489     h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
490     memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
491     memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
492
493     if(get_bits_count(&s->gb) < bit_length){
494         pps->transform_8x8_mode= get_bits1(&s->gb);
495         decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
496         pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
497     } else {
498         pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
499     }
500
501     build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]);
502     build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]);
503     if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
504         h->pps.chroma_qp_diff= 1;
505
506     if(s->avctx->debug&FF_DEBUG_PICT_INFO){
507         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",
508                pps_id, pps->sps_id,
509                pps->cabac ? "CABAC" : "CAVLC",
510                pps->slice_group_count,
511                pps->ref_count[0], pps->ref_count[1],
512                pps->weighted_pred ? "weighted" : "",
513                pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
514                pps->deblocking_filter_parameters_present ? "LPAR" : "",
515                pps->constrained_intra_pred ? "CONSTR" : "",
516                pps->redundant_pic_cnt_present ? "REDU" : "",
517                pps->transform_8x8_mode ? "8x8DCT" : ""
518                );
519     }
520
521     av_free(h->pps_buffers[pps_id]);
522     h->pps_buffers[pps_id]= pps;
523     return 0;
524 fail:
525     av_free(pps);
526     return -1;
527 }