2 * H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding
3 * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
5 * This file is part of FFmpeg.
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.
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.
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
24 * H.264 / AVC / MPEG4 part10 parameter set decoding.
25 * @author Michael Niedermayer <michaelni@gmx.at>
28 #include "libavutil/imgutils.h"
33 #include "h264data.h" //FIXME FIXME FIXME (just for zigzag_scan)
40 static const AVRational pixel_aspect[17]={
60 #define QP(qP,depth) ( (qP)+6*((depth)-8) )
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)
73 const uint8_t ff_h264_chroma_qp[5][QP_MAX_NUM+1] = {
75 CHROMA_QP_TABLE_END(8)
79 CHROMA_QP_TABLE_END(9)
84 CHROMA_QP_TABLE_END(10)
90 CHROMA_QP_TABLE_END(11)
97 CHROMA_QP_TABLE_END(12)
101 static const uint8_t default_scaling4[2][16]={
113 static const uint8_t default_scaling8[2][64]={
114 { 6,10,13,16,18,23,25,27,
115 10,11,16,18,23,25,27,29,
116 13,16,18,23,25,27,29,31,
117 16,18,23,25,27,29,31,33,
118 18,23,25,27,29,31,33,36,
119 23,25,27,29,31,33,36,38,
120 25,27,29,31,33,36,38,40,
121 27,29,31,33,36,38,40,42
123 9,13,15,17,19,21,22,24,
124 13,13,17,19,21,22,24,25,
125 15,17,19,21,22,24,25,27,
126 17,19,21,22,24,25,27,28,
127 19,21,22,24,25,27,28,30,
128 21,22,24,25,27,28,30,32,
129 22,24,25,27,28,30,32,33,
130 24,25,27,28,30,32,33,35
133 static inline int decode_hrd_parameters(H264Context *h, SPS *sps){
134 MpegEncContext * const s = &h->s;
136 cpb_count = get_ue_golomb_31(&s->gb) + 1;
139 av_log(h->s.avctx, AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count);
143 get_bits(&s->gb, 4); /* bit_rate_scale */
144 get_bits(&s->gb, 4); /* cpb_size_scale */
145 for(i=0; i<cpb_count; i++){
146 get_ue_golomb_long(&s->gb); /* bit_rate_value_minus1 */
147 get_ue_golomb_long(&s->gb); /* cpb_size_value_minus1 */
148 get_bits1(&s->gb); /* cbr_flag */
150 sps->initial_cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
151 sps->cpb_removal_delay_length = get_bits(&s->gb, 5) + 1;
152 sps->dpb_output_delay_length = get_bits(&s->gb, 5) + 1;
153 sps->time_offset_length = get_bits(&s->gb, 5);
154 sps->cpb_cnt = cpb_count;
158 static inline int decode_vui_parameters(H264Context *h, SPS *sps){
159 MpegEncContext * const s = &h->s;
160 int aspect_ratio_info_present_flag;
161 unsigned int aspect_ratio_idc;
163 aspect_ratio_info_present_flag= get_bits1(&s->gb);
165 if( aspect_ratio_info_present_flag ) {
166 aspect_ratio_idc= get_bits(&s->gb, 8);
167 if( aspect_ratio_idc == EXTENDED_SAR ) {
168 sps->sar.num= get_bits(&s->gb, 16);
169 sps->sar.den= get_bits(&s->gb, 16);
170 }else if(aspect_ratio_idc < FF_ARRAY_ELEMS(pixel_aspect)){
171 sps->sar= pixel_aspect[aspect_ratio_idc];
173 av_log(h->s.avctx, AV_LOG_ERROR, "illegal aspect ratio\n");
180 // s->avctx->aspect_ratio= sar_width*s->width / (float)(s->height*sar_height);
182 if(get_bits1(&s->gb)){ /* overscan_info_present_flag */
183 get_bits1(&s->gb); /* overscan_appropriate_flag */
186 sps->video_signal_type_present_flag = get_bits1(&s->gb);
187 if(sps->video_signal_type_present_flag){
188 get_bits(&s->gb, 3); /* video_format */
189 sps->full_range = get_bits1(&s->gb); /* video_full_range_flag */
191 sps->colour_description_present_flag = get_bits1(&s->gb);
192 if(sps->colour_description_present_flag){
193 sps->color_primaries = get_bits(&s->gb, 8); /* colour_primaries */
194 sps->color_trc = get_bits(&s->gb, 8); /* transfer_characteristics */
195 sps->colorspace = get_bits(&s->gb, 8); /* matrix_coefficients */
196 if (sps->color_primaries >= AVCOL_PRI_NB)
197 sps->color_primaries = AVCOL_PRI_UNSPECIFIED;
198 if (sps->color_trc >= AVCOL_TRC_NB)
199 sps->color_trc = AVCOL_TRC_UNSPECIFIED;
200 if (sps->colorspace >= AVCOL_SPC_NB)
201 sps->colorspace = AVCOL_SPC_UNSPECIFIED;
205 if(get_bits1(&s->gb)){ /* chroma_location_info_present_flag */
206 s->avctx->chroma_sample_location = get_ue_golomb(&s->gb)+1; /* chroma_sample_location_type_top_field */
207 get_ue_golomb(&s->gb); /* chroma_sample_location_type_bottom_field */
210 sps->timing_info_present_flag = get_bits1(&s->gb);
211 if(sps->timing_info_present_flag){
212 sps->num_units_in_tick = get_bits_long(&s->gb, 32);
213 sps->time_scale = get_bits_long(&s->gb, 32);
214 if(!sps->num_units_in_tick || !sps->time_scale){
215 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);
218 sps->fixed_frame_rate_flag = get_bits1(&s->gb);
221 sps->nal_hrd_parameters_present_flag = get_bits1(&s->gb);
222 if(sps->nal_hrd_parameters_present_flag)
223 if(decode_hrd_parameters(h, sps) < 0)
225 sps->vcl_hrd_parameters_present_flag = get_bits1(&s->gb);
226 if(sps->vcl_hrd_parameters_present_flag)
227 if(decode_hrd_parameters(h, sps) < 0)
229 if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag)
230 get_bits1(&s->gb); /* low_delay_hrd_flag */
231 sps->pic_struct_present_flag = get_bits1(&s->gb);
232 if(!get_bits_left(&s->gb))
234 sps->bitstream_restriction_flag = get_bits1(&s->gb);
235 if(sps->bitstream_restriction_flag){
236 get_bits1(&s->gb); /* motion_vectors_over_pic_boundaries_flag */
237 get_ue_golomb(&s->gb); /* max_bytes_per_pic_denom */
238 get_ue_golomb(&s->gb); /* max_bits_per_mb_denom */
239 get_ue_golomb(&s->gb); /* log2_max_mv_length_horizontal */
240 get_ue_golomb(&s->gb); /* log2_max_mv_length_vertical */
241 sps->num_reorder_frames= get_ue_golomb(&s->gb);
242 get_ue_golomb(&s->gb); /*max_dec_frame_buffering*/
244 if (get_bits_left(&s->gb) < 0) {
245 sps->num_reorder_frames=0;
246 sps->bitstream_restriction_flag= 0;
249 if(sps->num_reorder_frames > 16U /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
250 av_log(h->s.avctx, AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
255 if (get_bits_left(&s->gb) < 0) {
256 av_log(h->s.avctx, AV_LOG_ERROR, "Overread VUI by %d bits\n", -get_bits_left(&s->gb));
257 return AVERROR_INVALIDDATA;
263 static void decode_scaling_list(H264Context *h, uint8_t *factors, int size,
264 const uint8_t *jvt_list, const uint8_t *fallback_list){
265 MpegEncContext * const s = &h->s;
266 int i, last = 8, next = 8;
267 const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
268 if(!get_bits1(&s->gb)) /* matrix not written, we use the predicted one */
269 memcpy(factors, fallback_list, size*sizeof(uint8_t));
273 next = (last + get_se_golomb(&s->gb)) & 0xff;
274 if(!i && !next){ /* matrix not written, we use the preset one */
275 memcpy(factors, jvt_list, size*sizeof(uint8_t));
278 last = factors[scan[i]] = next ? next : last;
282 static void decode_scaling_matrices(H264Context *h, SPS *sps, PPS *pps, int is_sps,
283 uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
284 MpegEncContext * const s = &h->s;
285 int fallback_sps = !is_sps && sps->scaling_matrix_present;
286 const uint8_t *fallback[4] = {
287 fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
288 fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
289 fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
290 fallback_sps ? sps->scaling_matrix8[3] : default_scaling8[1]
292 if(get_bits1(&s->gb)){
293 sps->scaling_matrix_present |= is_sps;
294 decode_scaling_list(h,scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
295 decode_scaling_list(h,scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
296 decode_scaling_list(h,scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
297 decode_scaling_list(h,scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
298 decode_scaling_list(h,scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
299 decode_scaling_list(h,scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
300 if(is_sps || pps->transform_8x8_mode){
301 decode_scaling_list(h,scaling_matrix8[0],64,default_scaling8[0],fallback[2]); // Intra, Y
302 if(sps->chroma_format_idc == 3){
303 decode_scaling_list(h,scaling_matrix8[1],64,default_scaling8[0],scaling_matrix8[0]); // Intra, Cr
304 decode_scaling_list(h,scaling_matrix8[2],64,default_scaling8[0],scaling_matrix8[1]); // Intra, Cb
306 decode_scaling_list(h,scaling_matrix8[3],64,default_scaling8[1],fallback[3]); // Inter, Y
307 if(sps->chroma_format_idc == 3){
308 decode_scaling_list(h,scaling_matrix8[4],64,default_scaling8[1],scaling_matrix8[3]); // Inter, Cr
309 decode_scaling_list(h,scaling_matrix8[5],64,default_scaling8[1],scaling_matrix8[4]); // Inter, Cb
315 int ff_h264_decode_seq_parameter_set(H264Context *h){
316 MpegEncContext * const s = &h->s;
317 int profile_idc, level_idc, constraint_set_flags = 0;
322 profile_idc= get_bits(&s->gb, 8);
323 constraint_set_flags |= get_bits1(&s->gb) << 0; //constraint_set0_flag
324 constraint_set_flags |= get_bits1(&s->gb) << 1; //constraint_set1_flag
325 constraint_set_flags |= get_bits1(&s->gb) << 2; //constraint_set2_flag
326 constraint_set_flags |= get_bits1(&s->gb) << 3; //constraint_set3_flag
327 get_bits(&s->gb, 4); // reserved
328 level_idc= get_bits(&s->gb, 8);
329 sps_id= get_ue_golomb_31(&s->gb);
331 if(sps_id >= MAX_SPS_COUNT) {
332 av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
335 sps= av_mallocz(sizeof(SPS));
339 sps->time_offset_length = 24;
340 sps->profile_idc= profile_idc;
341 sps->constraint_set_flags = constraint_set_flags;
342 sps->level_idc= level_idc;
343 sps->full_range = -1;
345 memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
346 memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
347 sps->scaling_matrix_present = 0;
348 sps->colorspace = 2; //AVCOL_SPC_UNSPECIFIED
350 if(sps->profile_idc >= 100){ //high profile
351 sps->chroma_format_idc= get_ue_golomb_31(&s->gb);
352 if (sps->chroma_format_idc > 3U) {
353 av_log(h->s.avctx, AV_LOG_ERROR, "chroma_format_idc %d is illegal\n", sps->chroma_format_idc);
355 } else if(sps->chroma_format_idc == 3) {
356 sps->residual_color_transform_flag = get_bits1(&s->gb);
358 sps->bit_depth_luma = get_ue_golomb(&s->gb) + 8;
359 sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
360 if (sps->bit_depth_luma > 12U || sps->bit_depth_chroma > 12U) {
361 av_log(h->s.avctx, AV_LOG_ERROR, "illegal bit depth value (%d, %d)\n",
362 sps->bit_depth_luma, sps->bit_depth_chroma);
365 sps->transform_bypass = get_bits1(&s->gb);
366 decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
368 sps->chroma_format_idc= 1;
369 sps->bit_depth_luma = 8;
370 sps->bit_depth_chroma = 8;
373 sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
374 if (sps->log2_max_frame_num < 4 || sps->log2_max_frame_num > 16) {
375 av_log(h->s.avctx, AV_LOG_ERROR, "illegal log2_max_frame_num %d\n",
376 sps->log2_max_frame_num);
380 sps->poc_type= get_ue_golomb_31(&s->gb);
382 if(sps->poc_type == 0){ //FIXME #define
383 sps->log2_max_poc_lsb= get_ue_golomb(&s->gb) + 4;
384 } else if(sps->poc_type == 1){//FIXME #define
385 sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
386 sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
387 sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
388 sps->poc_cycle_length = get_ue_golomb(&s->gb);
390 if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
391 av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
395 for(i=0; i<sps->poc_cycle_length; i++)
396 sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
397 }else if(sps->poc_type != 2){
398 av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
402 sps->ref_frame_count= get_ue_golomb_31(&s->gb);
403 if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count > 16U){
404 av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
407 sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
408 sps->mb_width = get_ue_golomb(&s->gb) + 1;
409 sps->mb_height= get_ue_golomb(&s->gb) + 1;
410 if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 ||
411 av_image_check_size(16*sps->mb_width, 16*sps->mb_height, 0, h->s.avctx)){
412 av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
416 sps->frame_mbs_only_flag= get_bits1(&s->gb);
417 if(!sps->frame_mbs_only_flag)
418 sps->mb_aff= get_bits1(&s->gb);
422 sps->direct_8x8_inference_flag= get_bits1(&s->gb);
424 #ifndef ALLOW_INTERLACE
426 av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
428 sps->crop= get_bits1(&s->gb);
430 int crop_vertical_limit = sps->chroma_format_idc & 2 ? 16 : 8;
431 int crop_horizontal_limit = sps->chroma_format_idc == 3 ? 16 : 8;
432 sps->crop_left = get_ue_golomb(&s->gb);
433 sps->crop_right = get_ue_golomb(&s->gb);
434 sps->crop_top = get_ue_golomb(&s->gb);
435 sps->crop_bottom= get_ue_golomb(&s->gb);
436 if(sps->crop_left || sps->crop_top){
437 av_log(h->s.avctx, AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ... (left: %d, top: %d)\n", sps->crop_left, sps->crop_top);
439 if(sps->crop_right >= crop_horizontal_limit || sps->crop_bottom >= crop_vertical_limit){
440 av_log(h->s.avctx, AV_LOG_ERROR, "brainfart cropping not supported, cropping disabled (right: %d, bottom: %d)\n", sps->crop_right, sps->crop_bottom);
441 /* It is very unlikely that partial cropping will make anybody happy.
442 * Not cropping at all fixes for example playback of Sisvel 3D streams
443 * in applications supporting Sisvel 3D. */
456 sps->vui_parameters_present_flag= get_bits1(&s->gb);
457 if( sps->vui_parameters_present_flag )
458 if (decode_vui_parameters(h, sps) < 0)
464 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
465 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 b%d\n",
466 sps_id, sps->profile_idc, sps->level_idc,
468 sps->ref_frame_count,
469 sps->mb_width, sps->mb_height,
470 sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
471 sps->direct_8x8_inference_flag ? "8B8" : "",
472 sps->crop_left, sps->crop_right,
473 sps->crop_top, sps->crop_bottom,
474 sps->vui_parameters_present_flag ? "VUI" : "",
475 ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc],
476 sps->timing_info_present_flag ? sps->num_units_in_tick : 0,
477 sps->timing_info_present_flag ? sps->time_scale : 0,
482 av_free(h->sps_buffers[sps_id]);
483 h->sps_buffers[sps_id]= sps;
492 build_qp_table(PPS *pps, int t, int index, const int depth)
495 const int max_qp = 51 + 6*(depth-8);
496 for(i = 0; i < max_qp+1; i++)
497 pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[depth-8][av_clip(i + index, 0, max_qp)];
500 static int more_rbsp_data_in_pps(H264Context *h, PPS *pps)
502 const SPS *sps = h->sps_buffers[pps->sps_id];
503 int profile_idc = sps->profile_idc;
505 if ((profile_idc == 66 || profile_idc == 77 ||
506 profile_idc == 88) && (sps->constraint_set_flags & 7)) {
507 av_log(h->s.avctx, AV_LOG_VERBOSE,
508 "Current profile doesn't provide more RBSP data in PPS, skipping\n");
515 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
516 MpegEncContext * const s = &h->s;
517 unsigned int pps_id= get_ue_golomb(&s->gb);
519 const int qp_bd_offset = 6*(h->sps.bit_depth_luma-8);
522 if(pps_id >= MAX_PPS_COUNT) {
523 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
525 } else if (h->sps.bit_depth_luma > 10) {
526 av_log(h->s.avctx, AV_LOG_ERROR, "Unimplemented luma bit depth=%d (max=10)\n", h->sps.bit_depth_luma);
527 return AVERROR_PATCHWELCOME;
530 pps= av_mallocz(sizeof(PPS));
533 pps->sps_id= get_ue_golomb_31(&s->gb);
534 if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){
535 av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
539 pps->cabac= get_bits1(&s->gb);
540 pps->pic_order_present= get_bits1(&s->gb);
541 pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
542 if(pps->slice_group_count > 1 ){
543 pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
544 av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
545 switch(pps->mb_slice_group_map_type){
548 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
549 | run_length[ i ] |1 |ue(v) |
554 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
556 | top_left_mb[ i ] |1 |ue(v) |
557 | bottom_right_mb[ i ] |1 |ue(v) |
565 | slice_group_change_direction_flag |1 |u(1) |
566 | slice_group_change_rate_minus1 |1 |ue(v) |
571 | slice_group_id_cnt_minus1 |1 |ue(v) |
572 | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
574 | slice_group_id[ i ] |1 |u(v) |
579 pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
580 pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
581 if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
582 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
586 pps->weighted_pred= get_bits1(&s->gb);
587 pps->weighted_bipred_idc= get_bits(&s->gb, 2);
588 pps->init_qp= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
589 pps->init_qs= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
590 pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
591 pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
592 pps->constrained_intra_pred= get_bits1(&s->gb);
593 pps->redundant_pic_cnt_present = get_bits1(&s->gb);
595 pps->transform_8x8_mode= 0;
596 h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
597 memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
598 memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
600 bits_left = bit_length - get_bits_count(&s->gb);
601 if(bits_left > 0 && more_rbsp_data_in_pps(h, pps)){
602 pps->transform_8x8_mode= get_bits1(&s->gb);
603 decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
604 pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
606 pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
609 build_qp_table(pps, 0, pps->chroma_qp_index_offset[0], h->sps.bit_depth_luma);
610 build_qp_table(pps, 1, pps->chroma_qp_index_offset[1], h->sps.bit_depth_luma);
611 if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
612 pps->chroma_qp_diff= 1;
614 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
615 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",
617 pps->cabac ? "CABAC" : "CAVLC",
618 pps->slice_group_count,
619 pps->ref_count[0], pps->ref_count[1],
620 pps->weighted_pred ? "weighted" : "",
621 pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
622 pps->deblocking_filter_parameters_present ? "LPAR" : "",
623 pps->constrained_intra_pred ? "CONSTR" : "",
624 pps->redundant_pic_cnt_present ? "REDU" : "",
625 pps->transform_8x8_mode ? "8x8DCT" : ""
629 av_free(h->pps_buffers[pps_id]);
630 h->pps_buffers[pps_id]= pps;