1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/libavcodec/h264_ps.c	Tue Sep 25 15:55:33 2012 +0200
     1.3 @@ -0,0 +1,462 @@
     1.4 +/*
     1.5 + * H.26L/H.264/AVC/JVT/14496-10/... parameter set decoding
     1.6 + * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
     1.7 + *
     1.8 + * This file is part of FFmpeg.
     1.9 + *
    1.10 + * FFmpeg is free software; you can redistribute it and/or
    1.11 + * modify it under the terms of the GNU Lesser General Public
    1.12 + * License as published by the Free Software Foundation; either
    1.13 + * version 2.1 of the License, or (at your option) any later version.
    1.14 + *
    1.15 + * FFmpeg is distributed in the hope that it will be useful,
    1.16 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.17 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    1.18 + * Lesser General Public License for more details.
    1.19 + *
    1.20 + * You should have received a copy of the GNU Lesser General Public
    1.21 + * License along with FFmpeg; if not, write to the Free Software
    1.22 + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
    1.23 + */
    1.24 +
    1.25 +/**
    1.26 + * @file
    1.27 + * H.264 / AVC / MPEG4 part10 parameter set decoding.
    1.28 + * @author Michael Niedermayer <michaelni@gmx.at>
    1.29 + */
    1.30 +
    1.31 +#include "dsputil.h"
    1.32 +#include "avcodec.h"
    1.33 +#include "h264_types.h"
    1.34 +#include "h264_data.h"
    1.35 +#include "golomb.h"
    1.36 +
    1.37 +
    1.38 +//#undef NDEBUG
    1.39 +#include <assert.h>
    1.40 +
    1.41 +static const int pixel_aspect[17][2]={
    1.42 + {0, 1},
    1.43 + {1, 1},
    1.44 + {12, 11},
    1.45 + {10, 11},
    1.46 + {16, 11},
    1.47 + {40, 33},
    1.48 + {24, 11},
    1.49 + {20, 11},
    1.50 + {32, 11},
    1.51 + {80, 33},
    1.52 + {18, 11},
    1.53 + {15, 11},
    1.54 + {64, 33},
    1.55 + {160,99},
    1.56 + {4, 3},
    1.57 + {3, 2},
    1.58 + {2, 1},
    1.59 +};
    1.60 +
    1.61 +const uint8_t ff_h264_chroma_qp[52]={
    1.62 +    0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10,11,
    1.63 +   12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,
    1.64 +   28,29,29,30,31,32,32,33,34,34,35,35,36,36,37,37,
    1.65 +   37,38,38,38,39,39,39,39
    1.66 +};
    1.67 +
    1.68 +static const uint8_t default_scaling4[2][16]={
    1.69 +{   6,13,20,28,
    1.70 +   13,20,28,32,
    1.71 +   20,28,32,37,
    1.72 +   28,32,37,42
    1.73 +},{
    1.74 +   10,14,20,24,
    1.75 +   14,20,24,27,
    1.76 +   20,24,27,30,
    1.77 +   24,27,30,34
    1.78 +}};
    1.79 +
    1.80 +static const uint8_t default_scaling8[2][64]={
    1.81 +{   6,10,13,16,18,23,25,27,
    1.82 +   10,11,16,18,23,25,27,29,
    1.83 +   13,16,18,23,25,27,29,31,
    1.84 +   16,18,23,25,27,29,31,33,
    1.85 +   18,23,25,27,29,31,33,36,
    1.86 +   23,25,27,29,31,33,36,38,
    1.87 +   25,27,29,31,33,36,38,40,
    1.88 +   27,29,31,33,36,38,40,42
    1.89 +},{
    1.90 +    9,13,15,17,19,21,22,24,
    1.91 +   13,13,17,19,21,22,24,25,
    1.92 +   15,17,19,21,22,24,25,27,
    1.93 +   17,19,21,22,24,25,27,28,
    1.94 +   19,21,22,24,25,27,28,30,
    1.95 +   21,22,24,25,27,28,30,32,
    1.96 +   22,24,25,27,28,30,32,33,
    1.97 +   24,25,27,28,30,32,33,35
    1.98 +}};
    1.99 +
   1.100 +static inline int decode_hrd_parameters(GetBitContext *gb, SPS *sps){
   1.101 +    int cpb_count, i;
   1.102 +    cpb_count = get_ue_golomb_31(gb) + 1;
   1.103 +
   1.104 +    if(cpb_count > 32){
   1.105 +        av_log(AV_LOG_ERROR, "cpb_count %d invalid\n", cpb_count);
   1.106 +        return -1;
   1.107 +    }
   1.108 +
   1.109 +    get_bits(gb, 4); /* bit_rate_scale */
   1.110 +    get_bits(gb, 4); /* cpb_size_scale */
   1.111 +    for(i=0; i<cpb_count; i++){
   1.112 +        get_ue_golomb(gb); /* bit_rate_value_minus1 */
   1.113 +        get_ue_golomb(gb); /* cpb_size_value_minus1 */
   1.114 +        get_bits1(gb);     /* cbr_flag */
   1.115 +    }
   1.116 +    sps->initial_cpb_removal_delay_length = get_bits(gb, 5) + 1;
   1.117 +    sps->cpb_removal_delay_length = get_bits(gb, 5) + 1;
   1.118 +    sps->dpb_output_delay_length = get_bits(gb, 5) + 1;
   1.119 +    sps->time_offset_length = get_bits(gb, 5);
   1.120 +    sps->cpb_cnt = cpb_count;
   1.121 +    return 0;
   1.122 +}
   1.123 +
   1.124 +static inline int decode_vui_parameters(GetBitContext *gb, SPS *sps){
   1.125 +    int aspect_ratio_info_present_flag;
   1.126 +    unsigned int aspect_ratio_idc;
   1.127 +
   1.128 +    aspect_ratio_info_present_flag= get_bits1(gb);
   1.129 +
   1.130 +    if( aspect_ratio_info_present_flag ) {
   1.131 +        aspect_ratio_idc= get_bits(gb, 8);
   1.132 +        if( aspect_ratio_idc == EXTENDED_SAR ) {
   1.133 +            sps->num= get_bits(gb, 16);
   1.134 +            sps->den= get_bits(gb, 16);
   1.135 +        }else if(aspect_ratio_idc < sizeof(pixel_aspect)/sizeof(int[2])){
   1.136 +            //sps->sar=  pixel_aspect[aspect_ratio_idc];
   1.137 +        }else{
   1.138 +            av_log( AV_LOG_ERROR, "illegal aspect ratio idc %d\n", aspect_ratio_idc);
   1.139 +         //   return -1;
   1.140 +        }
   1.141 +    }else{
   1.142 +        sps->num=
   1.143 +        sps->den= 0;
   1.144 +    }
   1.145 +
   1.146 +    if(get_bits1(gb)){      /* overscan_info_present_flag */
   1.147 +        get_bits1(gb);      /* overscan_appropriate_flag */
   1.148 +    }
   1.149 +
   1.150 +    sps->video_signal_type_present_flag = get_bits1(gb);
   1.151 +    if(sps->video_signal_type_present_flag){
   1.152 +        get_bits(gb, 3);    /* video_format */
   1.153 +        sps->full_range = get_bits1(gb); /* video_full_range_flag */
   1.154 +
   1.155 +        sps->colour_description_present_flag = get_bits1(gb);
   1.156 +        if(sps->colour_description_present_flag){
   1.157 +            sps->color_primaries = get_bits(gb, 8); /* colour_primaries */
   1.158 +            sps->color_trc       = get_bits(gb, 8); /* transfer_characteristics */
   1.159 +            sps->colorspace      = get_bits(gb, 8); /* matrix_coefficients */
   1.160 +            if (sps->color_primaries >= AVCOL_PRI_NB)
   1.161 +                sps->color_primaries  = AVCOL_PRI_UNSPECIFIED;
   1.162 +            if (sps->color_trc >= AVCOL_TRC_NB)
   1.163 +                sps->color_trc  = AVCOL_TRC_UNSPECIFIED;
   1.164 +            if (sps->colorspace >= AVCOL_SPC_NB)
   1.165 +                sps->colorspace  = AVCOL_SPC_UNSPECIFIED;
   1.166 +        }
   1.167 +    }
   1.168 +
   1.169 +    if(get_bits1(gb)){      /* chroma_location_info_present_flag */
   1.170 +        av_log(AV_LOG_ERROR, "chroma_location_info_present_flag found, but not supported\n");
   1.171 +        (void) (get_ue_golomb(gb)+1);  /* chroma_sample_location_type_top_field */
   1.172 +        (void) get_ue_golomb(gb);  /* chroma_sample_location_type_bottom_field */
   1.173 +    }
   1.174 +
   1.175 +    sps->timing_info_present_flag = get_bits1(gb);
   1.176 +    if(sps->timing_info_present_flag){
   1.177 +        sps->num_units_in_tick = get_bits_long(gb, 32);
   1.178 +        sps->time_scale = get_bits_long(gb, 32);
   1.179 +        if(!sps->num_units_in_tick || !sps->time_scale){
   1.180 +            av_log(AV_LOG_ERROR, "time_scale/num_units_in_tick invalid or unsupported (%d/%d)\n", sps->time_scale, sps->num_units_in_tick);
   1.181 +            return -1;
   1.182 +        }
   1.183 +        sps->fixed_frame_rate_flag = get_bits1(gb);
   1.184 +    }
   1.185 +
   1.186 +    sps->nal_hrd_parameters_present_flag = get_bits1(gb);
   1.187 +    if(sps->nal_hrd_parameters_present_flag)
   1.188 +        if(decode_hrd_parameters(gb, sps) < 0)
   1.189 +            return -1;
   1.190 +    sps->vcl_hrd_parameters_present_flag = get_bits1(gb);
   1.191 +    if(sps->vcl_hrd_parameters_present_flag)
   1.192 +        if(decode_hrd_parameters(gb, sps) < 0)
   1.193 +            return -1;
   1.194 +    if(sps->nal_hrd_parameters_present_flag || sps->vcl_hrd_parameters_present_flag)
   1.195 +        get_bits1(gb);     /* low_delay_hrd_flag */
   1.196 +    sps->pic_struct_present_flag = get_bits1(gb);
   1.197 +
   1.198 +    sps->bitstream_restriction_flag = get_bits1(gb);
   1.199 +    if(sps->bitstream_restriction_flag){
   1.200 +        get_bits1(gb);     /* motion_vectors_over_pic_boundaries_flag */
   1.201 +        get_ue_golomb(gb); /* max_bytes_per_pic_denom */
   1.202 +        get_ue_golomb(gb); /* max_bits_per_mb_denom */
   1.203 +        get_ue_golomb(gb); /* log2_max_mv_length_horizontal */
   1.204 +        get_ue_golomb(gb); /* log2_max_mv_length_vertical */
   1.205 +        sps->num_reorder_frames= get_ue_golomb(gb);
   1.206 +        get_ue_golomb(gb); /*max_dec_frame_buffering*/
   1.207 +
   1.208 +        if(sps->num_reorder_frames > 16 /*max_dec_frame_buffering || max_dec_frame_buffering > 16*/){
   1.209 +            av_log(AV_LOG_ERROR, "illegal num_reorder_frames %d\n", sps->num_reorder_frames);
   1.210 +            return -1;
   1.211 +        }
   1.212 +    }
   1.213 +
   1.214 +    return 0;
   1.215 +}
   1.216 +
   1.217 +static void decode_scaling_list(GetBitContext *gb, uint8_t *factors, int size, const uint8_t *jvt_list, const uint8_t *fallback_list){
   1.218 +    int i, last = 8, next = 8;
   1.219 +    const uint8_t *scan = size == 16 ? zigzag_scan : ff_zigzag_direct;
   1.220 +    if(!get_bits1(gb)) /* matrix not written, we use the predicted one */
   1.221 +        memcpy(factors, fallback_list, size*sizeof(uint8_t));
   1.222 +    else
   1.223 +    for(i=0;i<size;i++){
   1.224 +        if(next)
   1.225 +            next = (last + get_se_golomb(gb)) & 0xff;
   1.226 +        if(!i && !next){ /* matrix not written, we use the preset one */
   1.227 +            memcpy(factors, jvt_list, size*sizeof(uint8_t));
   1.228 +            break;
   1.229 +        }
   1.230 +        last = factors[scan[i]] = next ? next : last;
   1.231 +    }
   1.232 +}
   1.233 +
   1.234 +static void decode_scaling_matrices(GetBitContext *gb, SPS *sps, PPS *pps, int is_sps,
   1.235 +                                   uint8_t (*scaling_matrix4)[16], uint8_t (*scaling_matrix8)[64]){
   1.236 +    int fallback_sps = !is_sps && sps->scaling_matrix_present;
   1.237 +    const uint8_t *fallback[4] = {
   1.238 +        fallback_sps ? sps->scaling_matrix4[0] : default_scaling4[0],
   1.239 +        fallback_sps ? sps->scaling_matrix4[3] : default_scaling4[1],
   1.240 +        fallback_sps ? sps->scaling_matrix8[0] : default_scaling8[0],
   1.241 +        fallback_sps ? sps->scaling_matrix8[1] : default_scaling8[1]
   1.242 +    };
   1.243 +    if(get_bits1(gb)){
   1.244 +        sps->scaling_matrix_present |= is_sps;
   1.245 +        decode_scaling_list(gb, scaling_matrix4[0],16,default_scaling4[0],fallback[0]); // Intra, Y
   1.246 +        decode_scaling_list(gb, scaling_matrix4[1],16,default_scaling4[0],scaling_matrix4[0]); // Intra, Cr
   1.247 +        decode_scaling_list(gb, scaling_matrix4[2],16,default_scaling4[0],scaling_matrix4[1]); // Intra, Cb
   1.248 +        decode_scaling_list(gb, scaling_matrix4[3],16,default_scaling4[1],fallback[1]); // Inter, Y
   1.249 +        decode_scaling_list(gb, scaling_matrix4[4],16,default_scaling4[1],scaling_matrix4[3]); // Inter, Cr
   1.250 +        decode_scaling_list(gb, scaling_matrix4[5],16,default_scaling4[1],scaling_matrix4[4]); // Inter, Cb
   1.251 +        if(is_sps || pps->transform_8x8_mode){
   1.252 +            decode_scaling_list(gb, scaling_matrix8[0],64,default_scaling8[0],fallback[2]);  // Intra, Y
   1.253 +            decode_scaling_list(gb, scaling_matrix8[1],64,default_scaling8[1],fallback[3]);  // Inter, Y
   1.254 +        }
   1.255 +    }
   1.256 +}
   1.257 +
   1.258 +int ff_h264_decode_seq_parameter_set(NalContext *n, GetBitContext *gb){
   1.259 +    int profile_idc, level_idc;
   1.260 +    unsigned int sps_id;
   1.261 +    int i;
   1.262 +    SPS *sps;
   1.263 +
   1.264 +    profile_idc= get_bits(gb, 8);
   1.265 +    get_bits1(gb);   //constraint_set0_flag
   1.266 +    get_bits1(gb);   //constraint_set1_flag
   1.267 +    get_bits1(gb);   //constraint_set2_flag
   1.268 +    get_bits1(gb);   //constraint_set3_flag
   1.269 +    get_bits(gb, 4); // reserved
   1.270 +    level_idc= get_bits(gb, 8);
   1.271 +    sps_id= get_ue_golomb_31(gb);
   1.272 +
   1.273 +    if(sps_id >= MAX_SPS_COUNT) {
   1.274 +        av_log(AV_LOG_ERROR, "sps_id (%d) out of range\n", sps_id);
   1.275 +        return -1;
   1.276 +    }
   1.277 +    if (!n->sps_buffers[sps_id])
   1.278 +        n->sps_buffers[sps_id]= av_mallocz(sizeof(SPS));
   1.279 +        
   1.280 +    sps = n->sps_buffers[sps_id];
   1.281 +    if(sps == NULL)
   1.282 +        return -1;
   1.283 +
   1.284 +    sps->profile_idc= profile_idc;
   1.285 +    sps->level_idc= level_idc;
   1.286 +
   1.287 +    memset(sps->scaling_matrix4, 16, sizeof(sps->scaling_matrix4));
   1.288 +    memset(sps->scaling_matrix8, 16, sizeof(sps->scaling_matrix8));
   1.289 +    sps->scaling_matrix_present = 0;
   1.290 +
   1.291 +    if(sps->profile_idc >= 100){ //high profile
   1.292 +        sps->chroma_format_idc= get_ue_golomb_31(gb);
   1.293 +        if(sps->chroma_format_idc == 3)
   1.294 +            sps->residual_color_transform_flag = get_bits1(gb);
   1.295 +        sps->bit_depth_luma   = get_ue_golomb(gb) + 8;
   1.296 +        sps->bit_depth_chroma = get_ue_golomb(gb) + 8;
   1.297 +        sps->transform_bypass = get_bits1(gb);
   1.298 +        decode_scaling_matrices(gb, sps, NULL, 1, sps->scaling_matrix4, sps->scaling_matrix8);
   1.299 +    }else{
   1.300 +        sps->chroma_format_idc= 1;
   1.301 +        sps->bit_depth_luma   = 8;
   1.302 +        sps->bit_depth_chroma = 8;
   1.303 +    }
   1.304 +
   1.305 +    sps->log2_max_frame_num= get_ue_golomb(gb) + 4;
   1.306 +    sps->poc_type= get_ue_golomb_31(gb);
   1.307 +
   1.308 +    if(sps->poc_type == 0){ //FIXME #define
   1.309 +        sps->log2_max_poc_lsb= get_ue_golomb(gb) + 4;
   1.310 +    } else if(sps->poc_type == 1){//FIXME #define
   1.311 +        sps->delta_pic_order_always_zero_flag= get_bits1(gb);
   1.312 +        sps->offset_for_non_ref_pic= get_se_golomb(gb);
   1.313 +        sps->offset_for_top_to_bottom_field= get_se_golomb(gb);
   1.314 +        sps->poc_cycle_length                = get_ue_golomb(gb);
   1.315 +
   1.316 +        if((unsigned)sps->poc_cycle_length >= FF_ARRAY_ELEMS(sps->offset_for_ref_frame)){
   1.317 +            av_log(AV_LOG_ERROR, "poc_cycle_length overflow %u\n", sps->poc_cycle_length);
   1.318 +            goto fail;
   1.319 +        }
   1.320 +
   1.321 +        for(i=0; i<sps->poc_cycle_length; i++)
   1.322 +            sps->offset_for_ref_frame[i]= get_se_golomb(gb);
   1.323 +    }else if(sps->poc_type != 2){
   1.324 +        av_log(AV_LOG_ERROR, "illegal POC type %d\n", sps->poc_type);
   1.325 +        goto fail;
   1.326 +    }
   1.327 +
   1.328 +    sps->ref_frame_count= get_ue_golomb_31(gb);
   1.329 +    if(sps->ref_frame_count >= 32){
   1.330 +        av_log(AV_LOG_ERROR, "too many reference frames\n");
   1.331 +        goto fail;
   1.332 +    }
   1.333 +    sps->gaps_in_frame_num_allowed_flag= get_bits1(gb);
   1.334 +    sps->mb_width = get_ue_golomb(gb) + 1;
   1.335 +    sps->mb_height= get_ue_golomb(gb) + 1;
   1.336 +
   1.337 +
   1.338 +    sps->frame_mbs_only_flag= get_bits1(gb);
   1.339 +    if(!sps->frame_mbs_only_flag){
   1.340 +        av_log(AV_LOG_ERROR, "MBAFF support not included\n");
   1.341 +        get_bits1(gb);
   1.342 +    }else
   1.343 +        sps->mb_aff= 0;
   1.344 +
   1.345 +    sps->direct_8x8_inference_flag= get_bits1(gb);
   1.346 +    if(!sps->frame_mbs_only_flag && !sps->direct_8x8_inference_flag){
   1.347 +        av_log(AV_LOG_ERROR, "This stream was generated by a broken encoder, invalid 8x8 inference\n");
   1.348 +        goto fail;
   1.349 +    }
   1.350 +
   1.351 +    sps->crop= get_bits1(gb);
   1.352 +    if(sps->crop){
   1.353 +		sps->crop_left = get_ue_golomb(gb);
   1.354 +		sps->crop_right = get_ue_golomb(gb);
   1.355 +		sps->crop_top = get_ue_golomb(gb);
   1.356 +		sps->crop_bottom= get_ue_golomb(gb);
   1.357 +		if(sps->crop_left || sps->crop_top){
   1.358 +			av_log( AV_LOG_ERROR, "insane cropping not completely supported, this could look slightly wrong ...\n");
   1.359 +		}
   1.360 +		if(sps->crop_right >= 8 || sps->crop_bottom >= (8>> !sps->frame_mbs_only_flag)){
   1.361 +			av_log( AV_LOG_ERROR, "brainfart cropping not supported, this could look slightly wrong ...\n");
   1.362 +		}
   1.363 +	}else {
   1.364 +	
   1.365 +		sps->crop_left  =
   1.366 +		sps->crop_right =
   1.367 +		sps->crop_top   =
   1.368 +		sps->crop_bottom= 0;
   1.369 +	}
   1.370 +
   1.371 +    sps->vui_parameters_present_flag= get_bits1(gb);
   1.372 +    if( sps->vui_parameters_present_flag )
   1.373 +        if (decode_vui_parameters(gb, sps) < 0)
   1.374 +            goto fail;
   1.375 +
   1.376 +    
   1.377 +    n->sps = *sps;
   1.378 +
   1.379 +    if( sps->bitstream_restriction_flag){
   1.380 +        n->has_b_frames = sps->num_reorder_frames;
   1.381 +    }
   1.382 +    else
   1.383 +        n->has_b_frames= MAX_DELAYED_PIC_COUNT;
   1.384 +
   1.385 +    return 0;
   1.386 +fail:
   1.387 +    av_free(sps);
   1.388 +    return -1;
   1.389 +}
   1.390 +
   1.391 +static void
   1.392 +build_qp_table(PPS *pps, int t, int index)
   1.393 +{
   1.394 +    int i;
   1.395 +    for(i = 0; i < 52; i++)
   1.396 +        pps->chroma_qp_table[t][i] = ff_h264_chroma_qp[av_clip(i + index, 0, 51)];
   1.397 +}
   1.398 +
   1.399 +int ff_h264_decode_picture_parameter_set(NalContext *n, GetBitContext *gb, int bit_length){
   1.400 +    unsigned int pps_id= get_ue_golomb(gb);
   1.401 +    PPS *pps;
   1.402 +
   1.403 +    if(pps_id >= MAX_PPS_COUNT) {
   1.404 +        av_log(AV_LOG_ERROR, "pps_id (%d) out of range\n", pps_id);
   1.405 +        return -1;
   1.406 +    }
   1.407 +    if (!n->pps_buffers[pps_id])
   1.408 +        n->pps_buffers[pps_id]= av_mallocz(sizeof(PPS));
   1.409 +    pps = n->pps_buffers[pps_id];
   1.410 +    if(pps == NULL)
   1.411 +        return -1;
   1.412 +    pps->sps_id= get_ue_golomb_31(gb);
   1.413 +    if((unsigned)pps->sps_id>=MAX_SPS_COUNT || n->sps_buffers[pps->sps_id] == NULL){
   1.414 +        av_log(AV_LOG_ERROR, "sps_id out of range\n");
   1.415 +        goto fail;
   1.416 +    }
   1.417 +
   1.418 +    pps->cabac= get_bits1(gb);
   1.419 +    pps->pic_order_present= get_bits1(gb);
   1.420 +    if(pps->pic_order_present){        
   1.421 +        av_log(AV_LOG_ERROR, "no interlaces support\n");
   1.422 +    }
   1.423 +    pps->slice_group_count= get_ue_golomb(gb) + 1;
   1.424 +    if(pps->slice_group_count > 1 ){
   1.425 +        pps->mb_slice_group_map_type= get_ue_golomb(gb);
   1.426 +        av_log(AV_LOG_ERROR, "multiple slices not supported\n");
   1.427 +    }
   1.428 +    pps->ref_count[0]= get_ue_golomb(gb) + 1;
   1.429 +    pps->ref_count[1]= get_ue_golomb(gb) + 1;
   1.430 +    if(pps->ref_count[0]> 32 || pps->ref_count[1]> 32){
   1.431 +        av_log(AV_LOG_ERROR, "reference overflow (pps)\n");
   1.432 +        goto fail;
   1.433 +    }
   1.434 +
   1.435 +    pps->weighted_pred= get_bits1(gb);
   1.436 +    pps->weighted_bipred_idc= get_bits(gb, 2);
   1.437 +    pps->init_qp= get_se_golomb(gb) + 26;
   1.438 +    pps->init_qs= get_se_golomb(gb) + 26;
   1.439 +    pps->chroma_qp_index_offset[0]= get_se_golomb(gb);
   1.440 +    pps->deblocking_filter_parameters_present= get_bits1(gb);
   1.441 +    pps->constrained_intra_pred= get_bits1(gb);
   1.442 +    pps->redundant_pic_cnt_present = get_bits1(gb);
   1.443 +
   1.444 +    pps->transform_8x8_mode= 0;
   1.445 +    memcpy(pps->scaling_matrix4, n->sps_buffers[pps->sps_id]->scaling_matrix4, sizeof(pps->scaling_matrix4));
   1.446 +    memcpy(pps->scaling_matrix8, n->sps_buffers[pps->sps_id]->scaling_matrix8, sizeof(pps->scaling_matrix8));
   1.447 +
   1.448 +    if(get_bits_count(gb) < bit_length){
   1.449 +        pps->transform_8x8_mode= get_bits1(gb);
   1.450 +        decode_scaling_matrices(gb, n->sps_buffers[pps->sps_id], pps, 0, pps->scaling_matrix4, pps->scaling_matrix8);
   1.451 +        pps->chroma_qp_index_offset[1]= get_se_golomb(gb); //second_chroma_qp_index_offset
   1.452 +    } else {
   1.453 +        pps->chroma_qp_index_offset[1]= pps->chroma_qp_index_offset[0];
   1.454 +    }
   1.455 +
   1.456 +    build_qp_table(pps, 0, pps->chroma_qp_index_offset[0]);
   1.457 +    build_qp_table(pps, 1, pps->chroma_qp_index_offset[1]);
   1.458 +    if(pps->chroma_qp_index_offset[0] != pps->chroma_qp_index_offset[1])
   1.459 +        pps->chroma_qp_diff= 1;
   1.460 +
   1.461 +    return 0;
   1.462 +fail:
   1.463 +    av_free(pps);
   1.464 +    return -1;
   1.465 +}