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 constraint_set_flags |= get_bits1(&s->gb) << 4; //constraint_set4_flag
328 constraint_set_flags |= get_bits1(&s->gb) << 5; //constraint_set5_flag
329 get_bits(&s->gb, 2); // reserved
330 level_idc= get_bits(&s->gb, 8);
331 sps_id= get_ue_golomb_31(&s->gb);
333 if(sps_id >= MAX_SPS_COUNT) {
334 av_log(h->s.avctx, AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
337 sps= av_mallocz(sizeof(SPS));
341 sps->time_offset_length = 24;
342 sps->profile_idc= profile_idc;
343 sps->constraint_set_flags = constraint_set_flags;
344 sps->level_idc= level_idc;
345 sps->full_range = -1;
347 memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
348 memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
349 sps->scaling_matrix_present = 0;
350 sps->colorspace = 2; //AVCOL_SPC_UNSPECIFIED
352 if(sps->profile_idc == 100 || sps->profile_idc == 110 ||
353 sps->profile_idc == 122 || sps->profile_idc == 244 || sps->profile_idc == 44 ||
354 sps->profile_idc == 83 || sps->profile_idc == 86 || sps->profile_idc == 118 ||
355 sps->profile_idc == 128 ) {
356 sps->chroma_format_idc= get_ue_golomb_31(&s->gb);
357 if (sps->chroma_format_idc > 3U) {
358 av_log(h->s.avctx, AV_LOG_ERROR, "chroma_format_idc %d is illegal\n", sps->chroma_format_idc);
360 } else if(sps->chroma_format_idc == 3) {
361 sps->residual_color_transform_flag = get_bits1(&s->gb);
363 sps->bit_depth_luma = get_ue_golomb(&s->gb) + 8;
364 sps->bit_depth_chroma = get_ue_golomb(&s->gb) + 8;
365 if (sps->bit_depth_luma > 12U || sps->bit_depth_chroma > 12U) {
366 av_log(h->s.avctx, AV_LOG_ERROR, "illegal bit depth value (%d, %d)\n",
367 sps->bit_depth_luma, sps->bit_depth_chroma);
370 sps->transform_bypass = get_bits1(&s->gb);
371 decode_scaling_matrices(h, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
373 sps->chroma_format_idc= 1;
374 sps->bit_depth_luma = 8;
375 sps->bit_depth_chroma = 8;
378 sps->log2_max_frame_num= get_ue_golomb(&s->gb) + 4;
379 if (sps->log2_max_frame_num < 4 || sps->log2_max_frame_num > 16) {
380 av_log(h->s.avctx, AV_LOG_ERROR, "illegal log2_max_frame_num %d\n",
381 sps->log2_max_frame_num);
385 sps->poc_type= get_ue_golomb_31(&s->gb);
387 if(sps->poc_type == 0){ //FIXME #define
388 unsigned t = get_ue_golomb(&s->gb);
390 av_log(h->s.avctx, AV_LOG_ERROR, "log2_max_poc_lsb (%d) is out of range\n", t);
393 sps->log2_max_poc_lsb= t + 4;
394 } else if(sps->poc_type == 1){//FIXME #define
395 sps->delta_pic_order_always_zero_flag= get_bits1(&s->gb);
396 sps->offset_for_non_ref_pic= get_se_golomb(&s->gb);
397 sps->offset_for_top_to_bottom_field= get_se_golomb(&s->gb);
398 sps->poc_cycle_length = get_ue_golomb(&s->gb);
400 if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
401 av_log(h->s.avctx, AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
405 for(i=0; i<sps->poc_cycle_length; i++)
406 sps->offset_for_ref_frame[i]= get_se_golomb(&s->gb);
407 }else if(sps->poc_type != 2){
408 av_log(h->s.avctx, AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
412 sps->ref_frame_count= get_ue_golomb_31(&s->gb);
413 if(sps->ref_frame_count > MAX_PICTURE_COUNT-2 || sps->ref_frame_count > 16U){
414 av_log(h->s.avctx, AV_LOG_ERROR, "too many reference frames\n");
417 sps->gaps_in_frame_num_allowed_flag= get_bits1(&s->gb);
418 sps->mb_width = get_ue_golomb(&s->gb) + 1;
419 sps->mb_height= get_ue_golomb(&s->gb) + 1;
420 if((unsigned)sps->mb_width >= INT_MAX/16 || (unsigned)sps->mb_height >= INT_MAX/16 ||
421 av_image_check_size(16*sps->mb_width, 16*sps->mb_height, 0, h->s.avctx)){
422 av_log(h->s.avctx, AV_LOG_ERROR, "mb_width/height overflow\n");
426 sps->frame_mbs_only_flag= get_bits1(&s->gb);
427 if(!sps->frame_mbs_only_flag)
428 sps->mb_aff= get_bits1(&s->gb);
432 sps->direct_8x8_inference_flag= get_bits1(&s->gb);
434 #ifndef ALLOW_INTERLACE
436 av_log(h->s.avctx, AV_LOG_ERROR, "MBAFF support not included; enable it at compile-time.\n");
438 sps->crop= get_bits1(&s->gb);
440 int crop_vertical_limit = sps->chroma_format_idc & 2 ? 16 : 8;
441 int crop_horizontal_limit = sps->chroma_format_idc == 3 ? 16 : 8;
442 sps->crop_left = get_ue_golomb(&s->gb);
443 sps->crop_right = get_ue_golomb(&s->gb);
444 sps->crop_top = get_ue_golomb(&s->gb);
445 sps->crop_bottom= get_ue_golomb(&s->gb);
446 if(sps->crop_left || sps->crop_top){
447 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);
449 if(sps->crop_right >= crop_horizontal_limit || sps->crop_bottom >= crop_vertical_limit){
450 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);
451 /* It is very unlikely that partial cropping will make anybody happy.
452 * Not cropping at all fixes for example playback of Sisvel 3D streams
453 * in applications supporting Sisvel 3D. */
466 sps->vui_parameters_present_flag= get_bits1(&s->gb);
467 if( sps->vui_parameters_present_flag )
468 if (decode_vui_parameters(h, sps) < 0)
474 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
475 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",
476 sps_id, sps->profile_idc, sps->level_idc,
478 sps->ref_frame_count,
479 sps->mb_width, sps->mb_height,
480 sps->frame_mbs_only_flag ? "FRM" : (sps->mb_aff ? "MB-AFF" : "PIC-AFF"),
481 sps->direct_8x8_inference_flag ? "8B8" : "",
482 sps->crop_left, sps->crop_right,
483 sps->crop_top, sps->crop_bottom,
484 sps->vui_parameters_present_flag ? "VUI" : "",
485 ((const char*[]){"Gray","420","422","444"})[sps->chroma_format_idc],
486 sps->timing_info_present_flag ? sps->num_units_in_tick : 0,
487 sps->timing_info_present_flag ? sps->time_scale : 0,
492 av_free(h->sps_buffers[sps_id]);
493 h->sps_buffers[sps_id]= sps;
502 build_qp_table(PPS *pps, int t, int index, const int depth)
505 const int max_qp = 51 + 6*(depth-8);
506 for(i = 0; i < max_qp+1; i++)
507 pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[depth-8][av_clip(i + index, 0, max_qp)];
510 static int more_rbsp_data_in_pps(H264Context *h, PPS *pps)
512 const SPS *sps = h->sps_buffers[pps->sps_id];
513 int profile_idc = sps->profile_idc;
515 if ((profile_idc == 66 || profile_idc == 77 ||
516 profile_idc == 88) && (sps->constraint_set_flags & 7)) {
517 av_log(h->s.avctx, AV_LOG_VERBOSE,
518 "Current profile doesn't provide more RBSP data in PPS, skipping\n");
525 int ff_h264_decode_picture_parameter_set(H264Context *h, int bit_length){
526 MpegEncContext * const s = &h->s;
527 unsigned int pps_id= get_ue_golomb(&s->gb);
529 const int qp_bd_offset = 6*(h->sps.bit_depth_luma-8);
532 if(pps_id >= MAX_PPS_COUNT) {
533 av_log(h->s.avctx, AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
535 } else if (h->sps.bit_depth_luma > 10) {
536 av_log(h->s.avctx, AV_LOG_ERROR, "Unimplemented luma bit depth=%d (max=10)\n", h->sps.bit_depth_luma);
537 return AVERROR_PATCHWELCOME;
540 pps= av_mallocz(sizeof(PPS));
543 pps->sps_id= get_ue_golomb_31(&s->gb);
544 if((unsigned)pps->sps_id>=MAX_SPS_COUNT || h->sps_buffers[pps->sps_id] == NULL){
545 av_log(h->s.avctx, AV_LOG_ERROR, "sps_id out of range\n");
549 pps->cabac= get_bits1(&s->gb);
550 pps->pic_order_present= get_bits1(&s->gb);
551 pps->slice_group_count= get_ue_golomb(&s->gb) + 1;
552 if(pps->slice_group_count > 1 ){
553 pps->mb_slice_group_map_type= get_ue_golomb(&s->gb);
554 av_log(h->s.avctx, AV_LOG_ERROR, "FMO not supported\n");
555 switch(pps->mb_slice_group_map_type){
558 | for( i = 0; i <= num_slice_groups_minus1; i++ ) | | |
559 | run_length[ i ] |1 |ue(v) |
564 | for( i = 0; i < num_slice_groups_minus1; i++ ) | | |
566 | top_left_mb[ i ] |1 |ue(v) |
567 | bottom_right_mb[ i ] |1 |ue(v) |
575 | slice_group_change_direction_flag |1 |u(1) |
576 | slice_group_change_rate_minus1 |1 |ue(v) |
581 | slice_group_id_cnt_minus1 |1 |ue(v) |
582 | for( i = 0; i <= slice_group_id_cnt_minus1; i++ | | |
584 | slice_group_id[ i ] |1 |u(v) |
589 pps->ref_count[0]= get_ue_golomb(&s->gb) + 1;
590 pps->ref_count[1]= get_ue_golomb(&s->gb) + 1;
591 if(pps->ref_count[0]-1 > 32-1 || pps->ref_count[1]-1 > 32-1){
592 av_log(h->s.avctx, AV_LOG_ERROR, "reference overflow (pps)\n");
596 pps->weighted_pred= get_bits1(&s->gb);
597 pps->weighted_bipred_idc= get_bits(&s->gb, 2);
598 pps->init_qp= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
599 pps->init_qs= get_se_golomb(&s->gb) + 26 + qp_bd_offset;
600 pps->chroma_qp_index_offset[0]= get_se_golomb(&s->gb);
601 pps->deblocking_filter_parameters_present= get_bits1(&s->gb);
602 pps->constrained_intra_pred= get_bits1(&s->gb);
603 pps->redundant_pic_cnt_present = get_bits1(&s->gb);
605 pps->transform_8x8_mode= 0;
606 h->dequant_coeff_pps= -1; //contents of sps/pps can change even if id doesn't, so reinit
607 memcpy(pps->scaling_matrix4, h->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
608 memcpy(pps->scaling_matrix8, h->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
610 bits_left = bit_length - get_bits_count(&s->gb);
611 if(bits_left > 0 && more_rbsp_data_in_pps(h, pps)){
612 pps->transform_8x8_mode= get_bits1(&s->gb);
613 decode_scaling_matrices(h, h->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
614 pps->chroma_qp_index_offset[1]= get_se_golomb(&s->gb); //second_chroma_qp_index_offset
616 pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
619 build_qp_table(pps, 0, pps->chroma_qp_index_offset[0], h->sps.bit_depth_luma);
620 build_qp_table(pps, 1, pps->chroma_qp_index_offset[1], h->sps.bit_depth_luma);
621 if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
622 pps->chroma_qp_diff= 1;
624 if(s->avctx->debug&FF_DEBUG_PICT_INFO){
625 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",
627 pps->cabac ? "CABAC" : "CAVLC",
628 pps->slice_group_count,
629 pps->ref_count[0], pps->ref_count[1],
630 pps->weighted_pred ? "weighted" : "",
631 pps->init_qp, pps->init_qs, pps->chroma_qp_index_offset[0], pps->chroma_qp_index_offset[1],
632 pps->deblocking_filter_parameters_present ? "LPAR" : "",
633 pps->constrained_intra_pred ? "CONSTR" : "",
634 pps->redundant_pic_cnt_present ? "REDU" : "",
635 pps->transform_8x8_mode ? "8x8DCT" : ""
639 av_free(h->pps_buffers[pps_id]);
640 h->pps_buffers[pps_id]= pps;