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FFmpeg/libavcodec/hevc_ps.c

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  1. /*

  2.  * HEVC Parameter Set decoding

  3.  *

  4.  * Copyright (C) 2012 - 2103 Guillaume Martres

  5.  * Copyright (C) 2012 - 2103 Mickael Raulet

  6.  * Copyright (C) 2012 - 2013 Gildas Cocherel

  7.  * Copyright (C) 2013 Vittorio Giovara

  8.  *

  9.  * This file is part of FFmpeg.

  10.  *

  11.  * FFmpeg is free software; you can redistribute it and/or

  12.  * modify it under the terms of the GNU Lesser General Public

  13.  * License as published by the Free Software Foundation; either

  14.  * version 2.1 of the License, or (at your option) any later version.

  15.  *

  16.  * FFmpeg is distributed in the hope that it will be useful,

  17.  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  18.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

  19.  * Lesser General Public License for more details.

  20.  *

  21.  * You should have received a copy of the GNU Lesser General Public

  22.  * License along with FFmpeg; if not, write to the Free Software

  23.  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

  24.  */

  25. 

  26. #include "libavutil/imgutils.h"

  27. #include "golomb.h"

  28. #include "hevc.h"

  29. 

  30. static const uint8_t default_scaling_list_intra[] = {

  31.     16, 16, 16, 16, 17, 18, 21, 24,

  32.     16, 16, 16, 16, 17, 19, 22, 25,

  33.     16, 16, 17, 18, 20, 22, 25, 29,

  34.     16, 16, 18, 21, 24, 27, 31, 36,

  35.     17, 17, 20, 24, 30, 35, 41, 47,

  36.     18, 19, 22, 27, 35, 44, 54, 65,

  37.     21, 22, 25, 31, 41, 54, 70, 88,

  38.     24, 25, 29, 36, 47, 65, 88, 115

  39. };

  40. 

  41. static const uint8_t default_scaling_list_inter[] = {

  42.     16, 16, 16, 16, 17, 18, 20, 24,

  43.     16, 16, 16, 17, 18, 20, 24, 25,

  44.     16, 16, 17, 18, 20, 24, 25, 28,

  45.     16, 17, 18, 20, 24, 25, 28, 33,

  46.     17, 18, 20, 24, 25, 28, 33, 41,

  47.     18, 20, 24, 25, 28, 33, 41, 54,

  48.     20, 24, 25, 28, 33, 41, 54, 71,

  49.     24, 25, 28, 33, 41, 54, 71, 91

  50. };

  51. 

  52. static const AVRational vui_sar[] = {

  53.     {  0,   1 },

  54.     {  1,   1 },

  55.     { 12,  11 },

  56.     { 10,  11 },

  57.     { 16,  11 },

  58.     { 40,  33 },

  59.     { 24,  11 },

  60.     { 20,  11 },

  61.     { 32,  11 },

  62.     { 80,  33 },

  63.     { 18,  11 },

  64.     { 15,  11 },

  65.     { 64,  33 },

  66.     { 160, 99 },

  67.     {  4,   3 },

  68.     {  3,   2 },

  69.     {  2,   1 },

  70. };

  71. 

  72. int ff_hevc_decode_short_term_rps(HEVCContext *s, ShortTermRPS *rps,

  73.                                   const HEVCSPS *sps, int is_slice_header)

  74. {

  75.     HEVCLocalContext *lc = s->HEVClc;

  76.     uint8_t rps_predict = 0;

  77.     int delta_poc;

  78.     int k0 = 0;

  79.     int k1 = 0;

  80.     int k  = 0;

  81.     int i;

  82. 

  83.     GetBitContext *gb = &lc->gb;

  84. 

  85.     if (rps != sps->st_rps && sps->nb_st_rps)

  86.         rps_predict = get_bits1(gb);

  87. 

  88.     if (rps_predict) {

  89.         const ShortTermRPS *rps_ridx;

  90.         int delta_rps;

  91.         unsigned abs_delta_rps;

  92.         uint8_t use_delta_flag = 0;

  93.         uint8_t delta_rps_sign;

  94. 

  95.         if (is_slice_header) {

  96.             unsigned int delta_idx = get_ue_golomb_long(gb) + 1;

  97.             if (delta_idx > sps->nb_st_rps) {

  98.                 av_log(s->avctx, AV_LOG_ERROR,

  99.                        "Invalid value of delta_idx in slice header RPS: %d > %d.\n",

  100.                        delta_idx, sps->nb_st_rps);

  101.                 return AVERROR_INVALIDDATA;

  102.             }

  103.             rps_ridx = &sps->st_rps[sps->nb_st_rps - delta_idx];

  104.         } else

  105.             rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];

  106. 

  107.         delta_rps_sign = get_bits1(gb);

  108.         abs_delta_rps  = get_ue_golomb_long(gb) + 1;

  109.         if (abs_delta_rps < 1 || abs_delta_rps > 32768) {

  110.             av_log(s->avctx, AV_LOG_ERROR,

  111.                    "Invalid value of abs_delta_rps: %d\n",

  112.                    abs_delta_rps);

  113.             return AVERROR_INVALIDDATA;

  114.         }

  115.         delta_rps      = (1 - (delta_rps_sign << 1)) * abs_delta_rps;

  116.         for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {

  117.             int used = rps->used[k] = get_bits1(gb);

  118. 

  119.             if (!used)

  120.                 use_delta_flag = get_bits1(gb);

  121. 

  122.             if (used || use_delta_flag) {

  123.                 if (i < rps_ridx->num_delta_pocs)

  124.                     delta_poc = delta_rps + rps_ridx->delta_poc[i];

  125.                 else

  126.                     delta_poc = delta_rps;

  127.                 rps->delta_poc[k] = delta_poc;

  128.                 if (delta_poc < 0)

  129.                     k0++;

  130.                 else

  131.                     k1++;

  132.                 k++;

  133.             }

  134.         }

  135. 

  136.         rps->num_delta_pocs    = k;

  137.         rps->num_negative_pics = k0;

  138.         // sort in increasing order (smallest first)

  139.         if (rps->num_delta_pocs != 0) {

  140.             int used, tmp;

  141.             for (i = 1; i < rps->num_delta_pocs; i++) {

  142.                 delta_poc = rps->delta_poc[i];

  143.                 used      = rps->used[i];

  144.                 for (k = i - 1; k >= 0; k--) {

  145.                     tmp = rps->delta_poc[k];

  146.                     if (delta_poc < tmp) {

  147.                         rps->delta_poc[k + 1] = tmp;

  148.                         rps->used[k + 1]      = rps->used[k];

  149.                         rps->delta_poc[k]     = delta_poc;

  150.                         rps->used[k]          = used;

  151.                     }

  152.                 }

  153.             }

  154.         }

  155.         if ((rps->num_negative_pics >> 1) != 0) {

  156.             int used;

  157.             k = rps->num_negative_pics - 1;

  158.             // flip the negative values to largest first

  159.             for (i = 0; i < rps->num_negative_pics >> 1; i++) {

  160.                 delta_poc         = rps->delta_poc[i];

  161.                 used              = rps->used[i];

  162.                 rps->delta_poc[i] = rps->delta_poc[k];

  163.                 rps->used[i]      = rps->used[k];

  164.                 rps->delta_poc[k] = delta_poc;

  165.                 rps->used[k]      = used;

  166.                 k--;

  167.             }

  168.         }

  169.     } else {

  170.         unsigned int prev, nb_positive_pics;

  171.         rps->num_negative_pics = get_ue_golomb_long(gb);

  172.         nb_positive_pics       = get_ue_golomb_long(gb);

  173. 

  174.         if (rps->num_negative_pics >= MAX_REFS ||

  175.             nb_positive_pics >= MAX_REFS) {

  176.             av_log(s->avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");

  177.             return AVERROR_INVALIDDATA;

  178.         }

  179. 

  180.         rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;

  181.         if (rps->num_delta_pocs) {

  182.             prev = 0;

  183.             for (i = 0; i < rps->num_negative_pics; i++) {

  184.                 delta_poc = get_ue_golomb_long(gb) + 1;

  185.                 prev -= delta_poc;

  186.                 rps->delta_poc[i] = prev;

  187.                 rps->used[i]      = get_bits1(gb);

  188.             }

  189.             prev = 0;

  190.             for (i = 0; i < nb_positive_pics; i++) {

  191.                 delta_poc = get_ue_golomb_long(gb) + 1;

  192.                 prev += delta_poc;

  193.                 rps->delta_poc[rps->num_negative_pics + i] = prev;

  194.                 rps->used[rps->num_negative_pics + i]      = get_bits1(gb);

  195.             }

  196.         }

  197.     }

  198.     return 0;

  199. }

  200. 

  201. 

  202. static void decode_profile_tier_level(HEVCContext *s, PTLCommon *ptl)

  203. {

  204.     int i;

  205.     HEVCLocalContext *lc = s->HEVClc;

  206.     GetBitContext *gb = &lc->gb;

  207. 

  208.     ptl->profile_space = get_bits(gb, 2);

  209.     ptl->tier_flag     = get_bits1(gb);

  210.     ptl->profile_idc   = get_bits(gb, 5);

  211.     if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN)

  212.         av_log(s->avctx, AV_LOG_DEBUG, "Main profile bitstream\n");

  213.     else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_10)

  214.         av_log(s->avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");

  215.     else if (ptl->profile_idc == FF_PROFILE_HEVC_MAIN_STILL_PICTURE)

  216.         av_log(s->avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");

  217.     else if (ptl->profile_idc == FF_PROFILE_HEVC_REXT)

  218.         av_log(s->avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");

  219.     else

  220.         av_log(s->avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);

  221. 

  222.     for (i = 0; i < 32; i++)

  223.         ptl->profile_compatibility_flag[i] = get_bits1(gb);

  224.     ptl->progressive_source_flag    = get_bits1(gb);

  225.     ptl->interlaced_source_flag     = get_bits1(gb);

  226.     ptl->non_packed_constraint_flag = get_bits1(gb);

  227.     ptl->frame_only_constraint_flag = get_bits1(gb);

  228. 

  229.     skip_bits(gb, 16); // XXX_reserved_zero_44bits[0..15]

  230.     skip_bits(gb, 16); // XXX_reserved_zero_44bits[16..31]

  231.     skip_bits(gb, 12); // XXX_reserved_zero_44bits[32..43]

  232. }

  233. 

  234. static void parse_ptl(HEVCContext *s, PTL *ptl, int max_num_sub_layers)

  235. {

  236.     int i;

  237.     HEVCLocalContext *lc = s->HEVClc;

  238.     GetBitContext *gb = &lc->gb;

  239.     decode_profile_tier_level(s, &ptl->general_ptl);

  240.     ptl->general_ptl.level_idc = get_bits(gb, 8);

  241. 

  242.     for (i = 0; i < max_num_sub_layers - 1; i++) {

  243.         ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);

  244.         ptl->sub_layer_level_present_flag[i]   = get_bits1(gb);

  245.     }

  246.     if (max_num_sub_layers - 1> 0)

  247.         for (i = max_num_sub_layers - 1; i < 8; i++)

  248.             skip_bits(gb, 2); // reserved_zero_2bits[i]

  249.     for (i = 0; i < max_num_sub_layers - 1; i++) {

  250.         if (ptl->sub_layer_profile_present_flag[i])

  251.             decode_profile_tier_level(s, &ptl->sub_layer_ptl[i]);

  252.         if (ptl->sub_layer_level_present_flag[i])

  253.             ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);

  254.     }

  255. }

  256. 

  257. static void decode_sublayer_hrd(HEVCContext *s, unsigned int nb_cpb,

  258.                                 int subpic_params_present)

  259. {

  260.     GetBitContext *gb = &s->HEVClc->gb;

  261.     int i;

  262. 

  263.     for (i = 0; i < nb_cpb; i++) {

  264.         get_ue_golomb_long(gb); // bit_rate_value_minus1

  265.         get_ue_golomb_long(gb); // cpb_size_value_minus1

  266. 

  267.         if (subpic_params_present) {

  268.             get_ue_golomb_long(gb); // cpb_size_du_value_minus1

  269.             get_ue_golomb_long(gb); // bit_rate_du_value_minus1

  270.         }

  271.         skip_bits1(gb); // cbr_flag

  272.     }

  273. }

  274. 

  275. static int decode_hrd(HEVCContext *s, int common_inf_present,

  276.                        int max_sublayers)

  277. {

  278.     GetBitContext *gb = &s->HEVClc->gb;

  279.     int nal_params_present = 0, vcl_params_present = 0;

  280.     int subpic_params_present = 0;

  281.     int i;

  282. 

  283.     if (common_inf_present) {

  284.         nal_params_present = get_bits1(gb);

  285.         vcl_params_present = get_bits1(gb);

  286. 

  287.         if (nal_params_present || vcl_params_present) {

  288.             subpic_params_present = get_bits1(gb);

  289. 

  290.             if (subpic_params_present) {

  291.                 skip_bits(gb, 8); // tick_divisor_minus2

  292.                 skip_bits(gb, 5); // du_cpb_removal_delay_increment_length_minus1

  293.                 skip_bits(gb, 1); // sub_pic_cpb_params_in_pic_timing_sei_flag

  294.                 skip_bits(gb, 5); // dpb_output_delay_du_length_minus1

  295.             }

  296. 

  297.             skip_bits(gb, 4); // bit_rate_scale

  298.             skip_bits(gb, 4); // cpb_size_scale

  299. 

  300.             if (subpic_params_present)

  301.                 skip_bits(gb, 4);  // cpb_size_du_scale

  302. 

  303.             skip_bits(gb, 5); // initial_cpb_removal_delay_length_minus1

  304.             skip_bits(gb, 5); // au_cpb_removal_delay_length_minus1

  305.             skip_bits(gb, 5); // dpb_output_delay_length_minus1

  306.         }

  307.     }

  308. 

  309.     for (i = 0; i < max_sublayers; i++) {

  310.         int low_delay = 0;

  311.         unsigned int nb_cpb = 1;

  312.         int fixed_rate = get_bits1(gb);

  313. 

  314.         if (!fixed_rate)

  315.             fixed_rate = get_bits1(gb);

  316. 

  317.         if (fixed_rate)

  318.             get_ue_golomb_long(gb);  // elemental_duration_in_tc_minus1

  319.         else

  320.             low_delay = get_bits1(gb);

  321. 

  322.         if (!low_delay) {

  323.             nb_cpb = get_ue_golomb_long(gb) + 1;

  324.             if (nb_cpb < 1 || nb_cpb > 32) {

  325.                 av_log(s->avctx, AV_LOG_ERROR, "nb_cpb %d invalid\n", nb_cpb);

  326.                 return AVERROR_INVALIDDATA;

  327.             }

  328.         }

  329. 

  330.         if (nal_params_present)

  331.             decode_sublayer_hrd(s, nb_cpb, subpic_params_present);

  332.         if (vcl_params_present)

  333.             decode_sublayer_hrd(s, nb_cpb, subpic_params_present);

  334.     }

  335.     return 0;

  336. }

  337. 

  338. int ff_hevc_decode_nal_vps(HEVCContext *s)

  339. {

  340.     int i,j;

  341.     GetBitContext *gb = &s->HEVClc->gb;

  342.     int vps_id = 0;

  343.     HEVCVPS *vps;

  344.     AVBufferRef *vps_buf = av_buffer_allocz(sizeof(*vps));

  345. 

  346.     if (!vps_buf)

  347.         return AVERROR(ENOMEM);

  348.     vps = (HEVCVPS*)vps_buf->data;

  349. 

  350.     av_log(s->avctx, AV_LOG_DEBUG, "Decoding VPS\n");

  351. 

  352.     vps_id = get_bits(gb, 4);

  353.     if (vps_id >= MAX_VPS_COUNT) {

  354.         av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", vps_id);

  355.         goto err;

  356.     }

  357. 

  358.     if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits

  359.         av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");

  360.         goto err;

  361.     }

  362. 

  363.     vps->vps_max_layers               = get_bits(gb, 6) + 1;

  364.     vps->vps_max_sub_layers           = get_bits(gb, 3) + 1;

  365.     vps->vps_temporal_id_nesting_flag = get_bits1(gb);

  366. 

  367.     if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits

  368.         av_log(s->avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");

  369.         goto err;

  370.     }

  371. 

  372.     if (vps->vps_max_sub_layers > MAX_SUB_LAYERS) {

  373.         av_log(s->avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",

  374.                vps->vps_max_sub_layers);

  375.         goto err;

  376.     }

  377. 

  378.     parse_ptl(s, &vps->ptl, vps->vps_max_sub_layers);

  379. 

  380.     vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);

  381. 

  382.     i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;

  383.     for (; i < vps->vps_max_sub_layers; i++) {

  384.         vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;

  385.         vps->vps_num_reorder_pics[i]      = get_ue_golomb_long(gb);

  386.         vps->vps_max_latency_increase[i]  = get_ue_golomb_long(gb) - 1;

  387. 

  388.         if (vps->vps_max_dec_pic_buffering[i] > MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {

  389.             av_log(s->avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",

  390.                    vps->vps_max_dec_pic_buffering[i] - 1);

  391.             goto err;

  392.         }

  393.         if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {

  394.             av_log(s->avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",

  395.                    vps->vps_num_reorder_pics[i]);

  396.             if (s->avctx->err_recognition & AV_EF_EXPLODE)

  397.                 goto err;

  398.         }

  399.     }

  400. 

  401.     vps->vps_max_layer_id   = get_bits(gb, 6);

  402.     vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;

  403.     if ((vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {

  404.         av_log(s->avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");

  405.         goto err;

  406.     }

  407. 

  408.     for (i = 1; i < vps->vps_num_layer_sets; i++)

  409.         for (j = 0; j <= vps->vps_max_layer_id; j++)

  410.             skip_bits(gb, 1);  // layer_id_included_flag[i][j]

  411. 

  412.     vps->vps_timing_info_present_flag = get_bits1(gb);

  413.     if (vps->vps_timing_info_present_flag) {

  414.         vps->vps_num_units_in_tick               = get_bits_long(gb, 32);

  415.         vps->vps_time_scale                      = get_bits_long(gb, 32);

  416.         vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);

  417.         if (vps->vps_poc_proportional_to_timing_flag)

  418.             vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;

  419.         vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);

  420.         for (i = 0; i < vps->vps_num_hrd_parameters; i++) {

  421.             int common_inf_present = 1;

  422. 

  423.             get_ue_golomb_long(gb); // hrd_layer_set_idx

  424.             if (i)

  425.                 common_inf_present = get_bits1(gb);

  426.             decode_hrd(s, common_inf_present, vps->vps_max_sub_layers);

  427.         }

  428.     }

  429.     get_bits1(gb); /* vps_extension_flag */

  430. 

  431.     av_buffer_unref(&s->vps_list[vps_id]);

  432.     s->vps_list[vps_id] = vps_buf;

  433.     return 0;

  434. 

  435. err:

  436.     av_buffer_unref(&vps_buf);

  437.     return AVERROR_INVALIDDATA;

  438. }

  439. 

  440. static void decode_vui(HEVCContext *s, HEVCSPS *sps)

  441. {

  442.     VUI *vui          = &sps->vui;

  443.     GetBitContext *gb = &s->HEVClc->gb;

  444.     int sar_present;

  445. 

  446.     av_log(s->avctx, AV_LOG_DEBUG, "Decoding VUI\n");

  447. 

  448.     sar_present = get_bits1(gb);

  449.     if (sar_present) {

  450.         uint8_t sar_idx = get_bits(gb, 8);

  451.         if (sar_idx < FF_ARRAY_ELEMS(vui_sar))

  452.             vui->sar = vui_sar[sar_idx];

  453.         else if (sar_idx == 255) {

  454.             vui->sar.num = get_bits(gb, 16);

  455.             vui->sar.den = get_bits(gb, 16);

  456.         } else

  457.             av_log(s->avctx, AV_LOG_WARNING,

  458.                    "Unknown SAR index: %u.\n", sar_idx);

  459.     }

  460. 

  461.     vui->overscan_info_present_flag = get_bits1(gb);

  462.     if (vui->overscan_info_present_flag)

  463.         vui->overscan_appropriate_flag = get_bits1(gb);

  464. 

  465.     vui->video_signal_type_present_flag = get_bits1(gb);

  466.     if (vui->video_signal_type_present_flag) {

  467.         vui->video_format                    = get_bits(gb, 3);

  468.         vui->video_full_range_flag           = get_bits1(gb);

  469.         vui->colour_description_present_flag = get_bits1(gb);

  470.         if (vui->video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)

  471.             sps->pix_fmt = AV_PIX_FMT_YUVJ420P;

  472.         if (vui->colour_description_present_flag) {

  473.             vui->colour_primaries        = get_bits(gb, 8);

  474.             vui->transfer_characteristic = get_bits(gb, 8);

  475.             vui->matrix_coeffs           = get_bits(gb, 8);

  476. 

  477.             // Set invalid values to "unspecified"

  478.             if (vui->colour_primaries >= AVCOL_PRI_NB)

  479.                 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;

  480.             if (vui->transfer_characteristic >= AVCOL_TRC_NB)

  481.                 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;

  482.             if (vui->matrix_coeffs >= AVCOL_SPC_NB)

  483.                 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;

  484.         }

  485.     }

  486. 

  487.     vui->chroma_loc_info_present_flag = get_bits1(gb);

  488.     if (vui->chroma_loc_info_present_flag) {

  489.         vui->chroma_sample_loc_type_top_field    = get_ue_golomb_long(gb);

  490.         vui->chroma_sample_loc_type_bottom_field = get_ue_golomb_long(gb);

  491.     }

  492. 

  493.     vui->neutra_chroma_indication_flag = get_bits1(gb);

  494.     vui->field_seq_flag                = get_bits1(gb);

  495.     vui->frame_field_info_present_flag = get_bits1(gb);

  496. 

  497.     vui->default_display_window_flag = get_bits1(gb);

  498.     if (vui->default_display_window_flag) {

  499.         //TODO: * 2 is only valid for 420

  500.         vui->def_disp_win.left_offset   = get_ue_golomb_long(gb) * 2;

  501.         vui->def_disp_win.right_offset  = get_ue_golomb_long(gb) * 2;

  502.         vui->def_disp_win.top_offset    = get_ue_golomb_long(gb) * 2;

  503.         vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * 2;

  504. 

  505.         if (s->apply_defdispwin &&

  506.             s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {

  507.             av_log(s->avctx, AV_LOG_DEBUG,

  508.                    "discarding vui default display window, "

  509.                    "original values are l:%u r:%u t:%u b:%u\n",

  510.                    vui->def_disp_win.left_offset,

  511.                    vui->def_disp_win.right_offset,

  512.                    vui->def_disp_win.top_offset,

  513.                    vui->def_disp_win.bottom_offset);

  514. 

  515.             vui->def_disp_win.left_offset   =

  516.             vui->def_disp_win.right_offset  =

  517.             vui->def_disp_win.top_offset    =

  518.             vui->def_disp_win.bottom_offset = 0;

  519.         }

  520.     }

  521. 

  522.     vui->vui_timing_info_present_flag = get_bits1(gb);

  523. 

  524.     if (vui->vui_timing_info_present_flag) {

  525.         vui->vui_num_units_in_tick               = get_bits_long(gb, 32);

  526.         vui->vui_time_scale                      = get_bits_long(gb, 32);

  527.         vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);

  528.         if (vui->vui_poc_proportional_to_timing_flag)

  529.             vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);

  530.         vui->vui_hrd_parameters_present_flag = get_bits1(gb);

  531.         if (vui->vui_hrd_parameters_present_flag)

  532.             decode_hrd(s, 1, sps->max_sub_layers);

  533.     }

  534. 

  535.     vui->bitstream_restriction_flag = get_bits1(gb);

  536.     if (vui->bitstream_restriction_flag) {

  537.         vui->tiles_fixed_structure_flag              = get_bits1(gb);

  538.         vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);

  539.         vui->restricted_ref_pic_lists_flag           = get_bits1(gb);

  540.         vui->min_spatial_segmentation_idc            = get_ue_golomb_long(gb);

  541.         vui->max_bytes_per_pic_denom                 = get_ue_golomb_long(gb);

  542.         vui->max_bits_per_min_cu_denom               = get_ue_golomb_long(gb);

  543.         vui->log2_max_mv_length_horizontal           = get_ue_golomb_long(gb);

  544.         vui->log2_max_mv_length_vertical             = get_ue_golomb_long(gb);

  545.     }

  546. }

  547. 

  548. static void set_default_scaling_list_data(ScalingList *sl)

  549. {

  550.     int matrixId;

  551. 

  552.     for (matrixId = 0; matrixId < 6; matrixId++) {

  553.         // 4x4 default is 16

  554.         memset(sl->sl[0][matrixId], 16, 16);

  555.         sl->sl_dc[0][matrixId] = 16; // default for 16x16

  556.         sl->sl_dc[1][matrixId] = 16; // default for 32x32

  557.     }

  558.     memcpy(sl->sl[1][0], default_scaling_list_intra, 64);

  559.     memcpy(sl->sl[1][1], default_scaling_list_intra, 64);

  560.     memcpy(sl->sl[1][2], default_scaling_list_intra, 64);

  561.     memcpy(sl->sl[1][3], default_scaling_list_inter, 64);

  562.     memcpy(sl->sl[1][4], default_scaling_list_inter, 64);

  563.     memcpy(sl->sl[1][5], default_scaling_list_inter, 64);

  564.     memcpy(sl->sl[2][0], default_scaling_list_intra, 64);

  565.     memcpy(sl->sl[2][1], default_scaling_list_intra, 64);

  566.     memcpy(sl->sl[2][2], default_scaling_list_intra, 64);

  567.     memcpy(sl->sl[2][3], default_scaling_list_inter, 64);

  568.     memcpy(sl->sl[2][4], default_scaling_list_inter, 64);

  569.     memcpy(sl->sl[2][5], default_scaling_list_inter, 64);

  570.     memcpy(sl->sl[3][0], default_scaling_list_intra, 64);

  571.     memcpy(sl->sl[3][1], default_scaling_list_intra, 64);

  572.     memcpy(sl->sl[3][2], default_scaling_list_intra, 64);

  573.     memcpy(sl->sl[3][3], default_scaling_list_inter, 64);

  574.     memcpy(sl->sl[3][4], default_scaling_list_inter, 64);

  575.     memcpy(sl->sl[3][5], default_scaling_list_inter, 64);

  576. }

  577. 

  578. static int scaling_list_data(HEVCContext *s, ScalingList *sl, HEVCSPS *sps)

  579. {

  580.     GetBitContext *gb = &s->HEVClc->gb;

  581.     uint8_t scaling_list_pred_mode_flag;

  582.     int32_t scaling_list_dc_coef[2][6];

  583.     int size_id, matrix_id, pos;

  584.     int i;

  585. 

  586.     for (size_id = 0; size_id < 4; size_id++)

  587.         for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {

  588.             scaling_list_pred_mode_flag = get_bits1(gb);

  589.             if (!scaling_list_pred_mode_flag) {

  590.                 unsigned int delta = get_ue_golomb_long(gb);

  591.                 /* Only need to handle non-zero delta. Zero means default,

  592.                  * which should already be in the arrays. */

  593.                 if (delta) {

  594.                     // Copy from previous array.

  595.                     if (matrix_id < delta) {

  596.                         av_log(s->avctx, AV_LOG_ERROR,

  597.                                "Invalid delta in scaling list data: %d.\n", delta);

  598.                         return AVERROR_INVALIDDATA;

  599.                     }

  600. 

  601.                     memcpy(sl->sl[size_id][matrix_id],

  602.                            sl->sl[size_id][matrix_id - delta],

  603.                            size_id > 0 ? 64 : 16);

  604.                     if (size_id > 1)

  605.                         sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];

  606.                 }

  607.             } else {

  608.                 int next_coef, coef_num;

  609.                 int32_t scaling_list_delta_coef;

  610. 

  611.                 next_coef = 8;

  612.                 coef_num  = FFMIN(64, 1 << (4 + (size_id << 1)));

  613.                 if (size_id > 1) {

  614.                     scaling_list_dc_coef[size_id - 2][matrix_id] = get_se_golomb(gb) + 8;

  615.                     next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];

  616.                     sl->sl_dc[size_id - 2][matrix_id] = next_coef;

  617.                 }

  618.                 for (i = 0; i < coef_num; i++) {

  619.                     if (size_id == 0)

  620.                         pos = 4 * ff_hevc_diag_scan4x4_y[i] +

  621.                                   ff_hevc_diag_scan4x4_x[i];

  622.                     else

  623.                         pos = 8 * ff_hevc_diag_scan8x8_y[i] +

  624.                                   ff_hevc_diag_scan8x8_x[i];

  625. 

  626.                     scaling_list_delta_coef = get_se_golomb(gb);

  627.                     next_coef = (next_coef + scaling_list_delta_coef + 256) % 256;

  628.                     sl->sl[size_id][matrix_id][pos] = next_coef;

  629.                 }

  630.             }

  631.         }

  632. 

  633.     if (sps->chroma_format_idc == 3) {

  634.         for (i = 0; i < 64; i++) {

  635.             sl->sl[3][1][i] = sl->sl[2][1][i];

  636.             sl->sl[3][2][i] = sl->sl[2][2][i];

  637.             sl->sl[3][4][i] = sl->sl[2][4][i];

  638.             sl->sl[3][5][i] = sl->sl[2][5][i];

  639.         }

  640.         sl->sl_dc[1][1] = sl->sl_dc[0][1];

  641.         sl->sl_dc[1][2] = sl->sl_dc[0][2];

  642.         sl->sl_dc[1][4] = sl->sl_dc[0][4];

  643.         sl->sl_dc[1][5] = sl->sl_dc[0][5];

  644.     }

  645. 

  646. 

  647.     return 0;

  648. }

  649. 

  650. int ff_hevc_decode_nal_sps(HEVCContext *s)

  651. {

  652.     const AVPixFmtDescriptor *desc;

  653.     GetBitContext *gb = &s->HEVClc->gb;

  654.     int ret = 0;

  655.     unsigned int sps_id = 0;

  656.     int log2_diff_max_min_transform_block_size;

  657.     int bit_depth_chroma, start, vui_present, sublayer_ordering_info;

  658.     int i;

  659. 

  660.     HEVCSPS *sps;

  661.     AVBufferRef *sps_buf = av_buffer_allocz(sizeof(*sps));

  662. 

  663.     if (!sps_buf)

  664.         return AVERROR(ENOMEM);

  665.     sps = (HEVCSPS*)sps_buf->data;

  666. 

  667.     av_log(s->avctx, AV_LOG_DEBUG, "Decoding SPS\n");

  668. 

  669.     // Coded parameters

  670. 

  671.     sps->vps_id = get_bits(gb, 4);

  672.     if (sps->vps_id >= MAX_VPS_COUNT) {

  673.         av_log(s->avctx, AV_LOG_ERROR, "VPS id out of range: %d\n", sps->vps_id);

  674.         ret = AVERROR_INVALIDDATA;

  675.         goto err;

  676.     }

  677. 

  678.     if (!s->vps_list[sps->vps_id]) {

  679.         av_log(s->avctx, AV_LOG_ERROR, "VPS %d does not exist\n",

  680.                sps->vps_id);

  681.         ret = AVERROR_INVALIDDATA;

  682.         goto err;

  683.     }

  684. 

  685.     sps->max_sub_layers = get_bits(gb, 3) + 1;

  686.     if (sps->max_sub_layers > MAX_SUB_LAYERS) {

  687.         av_log(s->avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",

  688.                sps->max_sub_layers);

  689.         ret = AVERROR_INVALIDDATA;

  690.         goto err;

  691.     }

  692. 

  693.     skip_bits1(gb); // temporal_id_nesting_flag

  694. 

  695.     parse_ptl(s, &sps->ptl, sps->max_sub_layers);

  696. 

  697.     sps_id = get_ue_golomb_long(gb);

  698.     if (sps_id >= MAX_SPS_COUNT) {

  699.         av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", sps_id);

  700.         ret = AVERROR_INVALIDDATA;

  701.         goto err;

  702.     }

  703. 

  704.     sps->chroma_format_idc = get_ue_golomb_long(gb);

  705.     if (!(sps->chroma_format_idc == 1 || sps->chroma_format_idc == 2 || sps->chroma_format_idc == 3)) {

  706.         avpriv_report_missing_feature(s->avctx, "chroma_format_idc != {1, 2, 3}\n");

  707.         ret = AVERROR_PATCHWELCOME;

  708.         goto err;

  709.     }

  710. 

  711.     if (sps->chroma_format_idc == 3)

  712.         sps->separate_colour_plane_flag = get_bits1(gb);

  713. 

  714.     if (sps->separate_colour_plane_flag)

  715.         sps->chroma_format_idc = 0;

  716. 

  717.     sps->width  = get_ue_golomb_long(gb);

  718.     sps->height = get_ue_golomb_long(gb);

  719.     if ((ret = av_image_check_size(sps->width,

  720.                                    sps->height, 0, s->avctx)) < 0)

  721.         goto err;

  722. 

  723.     if (get_bits1(gb)) { // pic_conformance_flag

  724.         //TODO: * 2 is only valid for 420

  725.         sps->pic_conf_win.left_offset   = get_ue_golomb_long(gb) * 2;

  726.         sps->pic_conf_win.right_offset  = get_ue_golomb_long(gb) * 2;

  727.         sps->pic_conf_win.top_offset    = get_ue_golomb_long(gb) * 2;

  728.         sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * 2;

  729. 

  730.         if (s->avctx->flags2 & CODEC_FLAG2_IGNORE_CROP) {

  731.             av_log(s->avctx, AV_LOG_DEBUG,

  732.                    "discarding sps conformance window, "

  733.                    "original values are l:%u r:%u t:%u b:%u\n",

  734.                    sps->pic_conf_win.left_offset,

  735.                    sps->pic_conf_win.right_offset,

  736.                    sps->pic_conf_win.top_offset,

  737.                    sps->pic_conf_win.bottom_offset);

  738. 

  739.             sps->pic_conf_win.left_offset   =

  740.             sps->pic_conf_win.right_offset  =

  741.             sps->pic_conf_win.top_offset    =

  742.             sps->pic_conf_win.bottom_offset = 0;

  743.         }

  744.         sps->output_window = sps->pic_conf_win;

  745.     }

  746. 

  747.     sps->bit_depth   = get_ue_golomb_long(gb) + 8;

  748.     bit_depth_chroma = get_ue_golomb_long(gb) + 8;

  749.     if (bit_depth_chroma != sps->bit_depth) {

  750.         av_log(s->avctx, AV_LOG_ERROR,

  751.                "Luma bit depth (%d) is different from chroma bit depth (%d), "

  752.                "this is unsupported.\n",

  753.                sps->bit_depth, bit_depth_chroma);

  754.         ret = AVERROR_INVALIDDATA;

  755.         goto err;

  756.     }

  757. 

  758.     switch (sps->bit_depth) {

  759.     case 8:

  760.         if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;

  761.         if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;

  762.         if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;

  763.        break;

  764.     case 9:

  765.         if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;

  766.         if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;

  767.         if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;

  768.         break;

  769.     case 10:

  770.         if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;

  771.         if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;

  772.         if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;

  773.         break;

  774.     case 12:

  775.         if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;

  776.         if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;

  777.         if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;

  778.         break;

  779.     default:

  780.         av_log(s->avctx, AV_LOG_ERROR,

  781.                "4:2:0, 4:2:2, 4:4:4 supports are currently specified for 8, 10 and 12 bits.\n");

  782.         return AVERROR_PATCHWELCOME;

  783.     }

  784. 

  785.     desc = av_pix_fmt_desc_get(sps->pix_fmt);

  786.     if (!desc) {

  787.         ret = AVERROR(EINVAL);

  788.         goto err;

  789.     }

  790. 

  791.     sps->hshift[0] = sps->vshift[0] = 0;

  792.     sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;

  793.     sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;

  794. 

  795.     sps->pixel_shift = sps->bit_depth > 8;

  796. 

  797.     sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;

  798.     if (sps->log2_max_poc_lsb > 16) {

  799.         av_log(s->avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",

  800.                sps->log2_max_poc_lsb - 4);

  801.         ret = AVERROR_INVALIDDATA;

  802.         goto err;

  803.     }

  804. 

  805.     sublayer_ordering_info = get_bits1(gb);

  806.     start = sublayer_ordering_info ? 0 : sps->max_sub_layers - 1;

  807.     for (i = start; i < sps->max_sub_layers; i++) {

  808.         sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;

  809.         sps->temporal_layer[i].num_reorder_pics      = get_ue_golomb_long(gb);

  810.         sps->temporal_layer[i].max_latency_increase  = get_ue_golomb_long(gb) - 1;

  811.         if (sps->temporal_layer[i].max_dec_pic_buffering > MAX_DPB_SIZE) {

  812.             av_log(s->avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",

  813.                    sps->temporal_layer[i].max_dec_pic_buffering - 1);

  814.             ret = AVERROR_INVALIDDATA;

  815.             goto err;

  816.         }

  817.         if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {

  818.             av_log(s->avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",

  819.                    sps->temporal_layer[i].num_reorder_pics);

  820.             if (s->avctx->err_recognition & AV_EF_EXPLODE ||

  821.                 sps->temporal_layer[i].num_reorder_pics > MAX_DPB_SIZE - 1) {

  822.                 ret = AVERROR_INVALIDDATA;

  823.                 goto err;

  824.             }

  825.             sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;

  826.         }

  827.     }

  828. 

  829.     if (!sublayer_ordering_info) {

  830.         for (i = 0; i < start; i++) {

  831.             sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;

  832.             sps->temporal_layer[i].num_reorder_pics      = sps->temporal_layer[start].num_reorder_pics;

  833.             sps->temporal_layer[i].max_latency_increase  = sps->temporal_layer[start].max_latency_increase;

  834.         }

  835.     }

  836. 

  837.     sps->log2_min_cb_size                    = get_ue_golomb_long(gb) + 3;

  838.     sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);

  839.     sps->log2_min_tb_size                    = get_ue_golomb_long(gb) + 2;

  840.     log2_diff_max_min_transform_block_size   = get_ue_golomb_long(gb);

  841.     sps->log2_max_trafo_size                 = log2_diff_max_min_transform_block_size +

  842.                                                sps->log2_min_tb_size;

  843. 

  844.     if (sps->log2_min_tb_size >= sps->log2_min_cb_size) {

  845.         av_log(s->avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");

  846.         ret = AVERROR_INVALIDDATA;

  847.         goto err;

  848.     }

  849.     sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);

  850.     sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);

  851. 

  852.     sps->scaling_list_enable_flag = get_bits1(gb);

  853.     if (sps->scaling_list_enable_flag) {

  854.         set_default_scaling_list_data(&sps->scaling_list);

  855. 

  856.         if (get_bits1(gb)) {

  857.             ret = scaling_list_data(s, &sps->scaling_list, sps);

  858.             if (ret < 0)

  859.                 goto err;

  860.         }

  861.     }

  862. 

  863.     sps->amp_enabled_flag = get_bits1(gb);

  864.     sps->sao_enabled      = get_bits1(gb);

  865. 

  866.     sps->pcm_enabled_flag = get_bits1(gb);

  867.     if (sps->pcm_enabled_flag) {

  868.         sps->pcm.bit_depth   = get_bits(gb, 4) + 1;

  869.         sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;

  870.         sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;

  871.         sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +

  872.                                         get_ue_golomb_long(gb);

  873.         if (sps->pcm.bit_depth > sps->bit_depth) {

  874.             av_log(s->avctx, AV_LOG_ERROR,

  875.                    "PCM bit depth (%d) is greater than normal bit depth (%d)\n",

  876.                    sps->pcm.bit_depth, sps->bit_depth);

  877.             ret = AVERROR_INVALIDDATA;

  878.             goto err;

  879.         }

  880. 

  881.         sps->pcm.loop_filter_disable_flag = get_bits1(gb);

  882.     }

  883. 

  884.     sps->nb_st_rps = get_ue_golomb_long(gb);

  885.     if (sps->nb_st_rps > MAX_SHORT_TERM_RPS_COUNT) {

  886.         av_log(s->avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",

  887.                sps->nb_st_rps);

  888.         ret = AVERROR_INVALIDDATA;

  889.         goto err;

  890.     }

  891.     for (i = 0; i < sps->nb_st_rps; i++) {

  892.         if ((ret = ff_hevc_decode_short_term_rps(s, &sps->st_rps[i],

  893.                                                  sps, 0)) < 0)

  894.             goto err;

  895.     }

  896. 

  897.     sps->long_term_ref_pics_present_flag = get_bits1(gb);

  898.     if (sps->long_term_ref_pics_present_flag) {

  899.         sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);

  900.         for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {

  901.             sps->lt_ref_pic_poc_lsb_sps[i]       = get_bits(gb, sps->log2_max_poc_lsb);

  902.             sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);

  903.         }

  904.     }

  905. 

  906.     sps->sps_temporal_mvp_enabled_flag          = get_bits1(gb);

  907.     sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);

  908.     sps->vui.sar = (AVRational){0, 1};

  909.     vui_present = get_bits1(gb);

  910.     if (vui_present)

  911.         decode_vui(s, sps);

  912. 

  913.     if (get_bits1(gb)) { // sps_extension_flag

  914.         int sps_extension_flag[1];

  915.         for (i = 0; i < 1; i++)

  916.             sps_extension_flag[i] = get_bits1(gb);

  917.         skip_bits(gb, 7); //sps_extension_7bits = get_bits(gb, 7);

  918.         if (sps_extension_flag[0]) {

  919.             int extended_precision_processing_flag;

  920.             int high_precision_offsets_enabled_flag;

  921.             int cabac_bypass_alignment_enabled_flag;

  922. 

  923.             sps->transform_skip_rotation_enabled_flag = get_bits1(gb);

  924.             sps->transform_skip_context_enabled_flag  = get_bits1(gb);

  925.             sps->implicit_rdpcm_enabled_flag = get_bits1(gb);

  926. 

  927.             sps->explicit_rdpcm_enabled_flag = get_bits1(gb);

  928. 

  929.             extended_precision_processing_flag = get_bits1(gb);

  930.             if (extended_precision_processing_flag)

  931.                 av_log(s->avctx, AV_LOG_WARNING,

  932.                    "extended_precision_processing_flag not yet implemented\n");

  933. 

  934.             sps->intra_smoothing_disabled_flag       = get_bits1(gb);

  935.             high_precision_offsets_enabled_flag  = get_bits1(gb);

  936.             if (high_precision_offsets_enabled_flag)

  937.                 av_log(s->avctx, AV_LOG_WARNING,

  938.                    "high_precision_offsets_enabled_flag not yet implemented\n");

  939. 

  940.             sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);

  941. 

  942.             cabac_bypass_alignment_enabled_flag  = get_bits1(gb);

  943.             if (cabac_bypass_alignment_enabled_flag)

  944.                 av_log(s->avctx, AV_LOG_WARNING,

  945.                    "cabac_bypass_alignment_enabled_flag not yet implemented\n");

  946.         }

  947.     }

  948.     if (s->apply_defdispwin) {

  949.         sps->output_window.left_offset   += sps->vui.def_disp_win.left_offset;

  950.         sps->output_window.right_offset  += sps->vui.def_disp_win.right_offset;

  951.         sps->output_window.top_offset    += sps->vui.def_disp_win.top_offset;

  952.         sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;

  953.     }

  954.     if (sps->output_window.left_offset & (0x1F >> (sps->pixel_shift)) &&

  955.         !(s->avctx->flags & CODEC_FLAG_UNALIGNED)) {

  956.         sps->output_window.left_offset &= ~(0x1F >> (sps->pixel_shift));

  957.         av_log(s->avctx, AV_LOG_WARNING, "Reducing left output window to %d "

  958.                "chroma samples to preserve alignment.\n",

  959.                sps->output_window.left_offset);

  960.     }

  961.     sps->output_width  = sps->width -

  962.                          (sps->output_window.left_offset + sps->output_window.right_offset);

  963.     sps->output_height = sps->height -

  964.                          (sps->output_window.top_offset + sps->output_window.bottom_offset);

  965.     if (sps->output_width <= 0 || sps->output_height <= 0) {

  966.         av_log(s->avctx, AV_LOG_WARNING, "Invalid visible frame dimensions: %dx%d.\n",

  967.                sps->output_width, sps->output_height);

  968.         if (s->avctx->err_recognition & AV_EF_EXPLODE) {

  969.             ret = AVERROR_INVALIDDATA;

  970.             goto err;

  971.         }

  972.         av_log(s->avctx, AV_LOG_WARNING,

  973.                "Displaying the whole video surface.\n");

  974.         sps->pic_conf_win.left_offset   =

  975.         sps->pic_conf_win.right_offset  =

  976.         sps->pic_conf_win.top_offset    =

  977.         sps->pic_conf_win.bottom_offset = 0;

  978.         sps->output_width               = sps->width;

  979.         sps->output_height              = sps->height;

  980.     }

  981. 

  982.     // Inferred parameters

  983.     sps->log2_ctb_size = sps->log2_min_cb_size +

  984.                          sps->log2_diff_max_min_coding_block_size;

  985.     sps->log2_min_pu_size = sps->log2_min_cb_size - 1;

  986. 

  987.     sps->ctb_width  = (sps->width  + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;

  988.     sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;

  989.     sps->ctb_size   = sps->ctb_width * sps->ctb_height;

  990. 

  991.     sps->min_cb_width  = sps->width  >> sps->log2_min_cb_size;

  992.     sps->min_cb_height = sps->height >> sps->log2_min_cb_size;

  993.     sps->min_tb_width  = sps->width  >> sps->log2_min_tb_size;

  994.     sps->min_tb_height = sps->height >> sps->log2_min_tb_size;

  995.     sps->min_pu_width  = sps->width  >> sps->log2_min_pu_size;

  996.     sps->min_pu_height = sps->height >> sps->log2_min_pu_size;

  997.     sps->tb_mask       = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;

  998. 

  999.     sps->qp_bd_offset = 6 * (sps->bit_depth - 8);

  1000. 

  1001.     if (sps->width  & ((1 << sps->log2_min_cb_size) - 1) ||

  1002.         sps->height & ((1 << sps->log2_min_cb_size) - 1)) {

  1003.         av_log(s->avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");

  1004.         goto err;

  1005.     }

  1006. 

  1007.     if (sps->log2_ctb_size > MAX_LOG2_CTB_SIZE) {

  1008.         av_log(s->avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);

  1009.         goto err;

  1010.     }

  1011.     if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {

  1012.         av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",

  1013.                sps->max_transform_hierarchy_depth_inter);

  1014.         goto err;

  1015.     }

  1016.     if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {

  1017.         av_log(s->avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",

  1018.                sps->max_transform_hierarchy_depth_intra);

  1019.         goto err;

  1020.     }

  1021.     if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {

  1022.         av_log(s->avctx, AV_LOG_ERROR,

  1023.                "max transform block size out of range: %d\n",

  1024.                sps->log2_max_trafo_size);

  1025.         goto err;

  1026.     }

  1027. 

  1028.     if (s->avctx->debug & FF_DEBUG_BITSTREAM) {

  1029.         av_log(s->avctx, AV_LOG_DEBUG,

  1030.                "Parsed SPS: id %d; coded wxh: %dx%d; "

  1031.                "cropped wxh: %dx%d; pix_fmt: %s.\n",

  1032.                sps_id, sps->width, sps->height,

  1033.                sps->output_width, sps->output_height,

  1034.                av_get_pix_fmt_name(sps->pix_fmt));

  1035.     }

  1036. 

  1037.     /* check if this is a repeat of an already parsed SPS, then keep the

  1038.      * original one.

  1039.      * otherwise drop all PPSes that depend on it */

  1040.     if (s->sps_list[sps_id] &&

  1041.         !memcmp(s->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {

  1042.         av_buffer_unref(&sps_buf);

  1043.     } else {

  1044.         for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++) {

  1045.             if (s->pps_list[i] && ((HEVCPPS*)s->pps_list[i]->data)->sps_id == sps_id)

  1046.                 av_buffer_unref(&s->pps_list[i]);

  1047.         }

  1048.         if (s->sps_list[sps_id] && s->sps == (HEVCSPS*)s->sps_list[sps_id]->data) {

  1049.             av_buffer_unref(&s->current_sps);

  1050.             s->current_sps = av_buffer_ref(s->sps_list[sps_id]);

  1051.             if (!s->current_sps)

  1052.                 s->sps = NULL;

  1053.         }

  1054.         av_buffer_unref(&s->sps_list[sps_id]);

  1055.         s->sps_list[sps_id] = sps_buf;

  1056.     }

  1057. 

  1058.     return 0;

  1059. 

  1060. err:

  1061.     av_buffer_unref(&sps_buf);

  1062.     return ret;

  1063. }

  1064. 

  1065. static void hevc_pps_free(void *opaque, uint8_t *data)

  1066. {

  1067.     HEVCPPS *pps = (HEVCPPS*)data;

  1068. 

  1069.     av_freep(&pps->column_width);

  1070.     av_freep(&pps->row_height);

  1071.     av_freep(&pps->col_bd);

  1072.     av_freep(&pps->row_bd);

  1073.     av_freep(&pps->col_idxX);

  1074.     av_freep(&pps->ctb_addr_rs_to_ts);

  1075.     av_freep(&pps->ctb_addr_ts_to_rs);

  1076.     av_freep(&pps->tile_pos_rs);

  1077.     av_freep(&pps->tile_id);

  1078.     av_freep(&pps->min_tb_addr_zs_tab);

  1079. 

  1080.     av_freep(&pps);

  1081. }

  1082. 

  1083. static int pps_range_extensions(HEVCContext *s, HEVCPPS *pps, HEVCSPS *sps) {

  1084.     GetBitContext *gb = &s->HEVClc->gb;

  1085.     int i;

  1086. 

  1087.     if (pps->transform_skip_enabled_flag) {

  1088.         pps->log2_max_transform_skip_block_size = get_ue_golomb_long(gb) + 2;

  1089.     }

  1090.     pps->cross_component_prediction_enabled_flag = get_bits1(gb);

  1091.     pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);

  1092.     if (pps->chroma_qp_offset_list_enabled_flag) {

  1093.         pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_long(gb);

  1094.         pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_long(gb);

  1095.         if (pps->chroma_qp_offset_list_len_minus1 && pps->chroma_qp_offset_list_len_minus1 >= 5) {

  1096.             av_log(s->avctx, AV_LOG_ERROR,

  1097.                    "chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");

  1098.             return AVERROR_INVALIDDATA;

  1099.         }

  1100.         for (i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {

  1101.             pps->cb_qp_offset_list[i] = get_se_golomb_long(gb);

  1102.             if (pps->cb_qp_offset_list[i]) {

  1103.                 av_log(s->avctx, AV_LOG_WARNING,

  1104.                        "cb_qp_offset_list not tested yet.\n");

  1105.             }

  1106.             pps->cr_qp_offset_list[i] = get_se_golomb_long(gb);

  1107.             if (pps->cr_qp_offset_list[i]) {

  1108.                 av_log(s->avctx, AV_LOG_WARNING,

  1109.                        "cb_qp_offset_list not tested yet.\n");

  1110.             }

  1111.         }

  1112.     }

  1113.     pps->log2_sao_offset_scale_luma = get_ue_golomb_long(gb);

  1114.     pps->log2_sao_offset_scale_chroma = get_ue_golomb_long(gb);

  1115. 

  1116.     return(0);

  1117. }

  1118. 

  1119. int ff_hevc_decode_nal_pps(HEVCContext *s)

  1120. {

  1121.     GetBitContext *gb = &s->HEVClc->gb;

  1122.     HEVCSPS      *sps = NULL;

  1123.     int pic_area_in_ctbs;

  1124.     int log2_diff_ctb_min_tb_size;

  1125.     int i, j, x, y, ctb_addr_rs, tile_id;

  1126.     int ret = 0;

  1127.     unsigned int pps_id = 0;

  1128. 

  1129.     AVBufferRef *pps_buf;

  1130.     HEVCPPS *pps = av_mallocz(sizeof(*pps));

  1131. 

  1132.     if (!pps)

  1133.         return AVERROR(ENOMEM);

  1134. 

  1135.     pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),

  1136.                                hevc_pps_free, NULL, 0);

  1137.     if (!pps_buf) {

  1138.         av_freep(&pps);

  1139.         return AVERROR(ENOMEM);

  1140.     }

  1141. 

  1142.     av_log(s->avctx, AV_LOG_DEBUG, "Decoding PPS\n");

  1143. 

  1144.     // Default values

  1145.     pps->loop_filter_across_tiles_enabled_flag = 1;

  1146.     pps->num_tile_columns                      = 1;

  1147.     pps->num_tile_rows                         = 1;

  1148.     pps->uniform_spacing_flag                  = 1;

  1149.     pps->disable_dbf                           = 0;

  1150.     pps->beta_offset                           = 0;

  1151.     pps->tc_offset                             = 0;

  1152.     pps->log2_max_transform_skip_block_size    = 2;

  1153. 

  1154.     // Coded parameters

  1155.     pps_id = get_ue_golomb_long(gb);

  1156.     if (pps_id >= MAX_PPS_COUNT) {

  1157.         av_log(s->avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);

  1158.         ret = AVERROR_INVALIDDATA;

  1159.         goto err;

  1160.     }

  1161.     pps->sps_id = get_ue_golomb_long(gb);

  1162.     if (pps->sps_id >= MAX_SPS_COUNT) {

  1163.         av_log(s->avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);

  1164.         ret = AVERROR_INVALIDDATA;

  1165.         goto err;

  1166.     }

  1167.     if (!s->sps_list[pps->sps_id]) {

  1168.         av_log(s->avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);

  1169.         ret = AVERROR_INVALIDDATA;

  1170.         goto err;

  1171.     }

  1172.     sps = (HEVCSPS *)s->sps_list[pps->sps_id]->data;

  1173. 

  1174.     pps->dependent_slice_segments_enabled_flag = get_bits1(gb);

  1175.     pps->output_flag_present_flag              = get_bits1(gb);

  1176.     pps->num_extra_slice_header_bits           = get_bits(gb, 3);

  1177. 

  1178.     pps->sign_data_hiding_flag = get_bits1(gb);

  1179. 

  1180.     pps->cabac_init_present_flag = get_bits1(gb);

  1181. 

  1182.     pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;

  1183.     pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;

  1184. 

  1185.     pps->pic_init_qp_minus26 = get_se_golomb(gb);

  1186. 

  1187.     pps->constrained_intra_pred_flag = get_bits1(gb);

  1188.     pps->transform_skip_enabled_flag = get_bits1(gb);

  1189. 

  1190.     pps->cu_qp_delta_enabled_flag = get_bits1(gb);

  1191.     pps->diff_cu_qp_delta_depth   = 0;

  1192.     if (pps->cu_qp_delta_enabled_flag)

  1193.         pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);

  1194. 

  1195.     pps->cb_qp_offset = get_se_golomb(gb);

  1196.     if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {

  1197.         av_log(s->avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",

  1198.                pps->cb_qp_offset);

  1199.         ret = AVERROR_INVALIDDATA;

  1200.         goto err;

  1201.     }

  1202.     pps->cr_qp_offset = get_se_golomb(gb);

  1203.     if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {

  1204.         av_log(s->avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",

  1205.                pps->cr_qp_offset);

  1206.         ret = AVERROR_INVALIDDATA;

  1207.         goto err;

  1208.     }

  1209.     pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);

  1210. 

  1211.     pps->weighted_pred_flag   = get_bits1(gb);

  1212.     pps->weighted_bipred_flag = get_bits1(gb);

  1213. 

  1214.     pps->transquant_bypass_enable_flag    = get_bits1(gb);

  1215.     pps->tiles_enabled_flag               = get_bits1(gb);

  1216.     pps->entropy_coding_sync_enabled_flag = get_bits1(gb);

  1217. 

  1218.     if (pps->tiles_enabled_flag) {

  1219.         pps->num_tile_columns = get_ue_golomb_long(gb) + 1;

  1220.         pps->num_tile_rows    = get_ue_golomb_long(gb) + 1;

  1221.         if (pps->num_tile_columns == 0 ||

  1222.             pps->num_tile_columns >= sps->width) {

  1223.             av_log(s->avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",

  1224.                    pps->num_tile_columns - 1);

  1225.             ret = AVERROR_INVALIDDATA;

  1226.             goto err;

  1227.         }

  1228.         if (pps->num_tile_rows == 0 ||

  1229.             pps->num_tile_rows >= sps->height) {

  1230.             av_log(s->avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",

  1231.                    pps->num_tile_rows - 1);

  1232.             ret = AVERROR_INVALIDDATA;

  1233.             goto err;

  1234.         }

  1235. 

  1236.         pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));

  1237.         pps->row_height   = av_malloc_array(pps->num_tile_rows,    sizeof(*pps->row_height));

  1238.         if (!pps->column_width || !pps->row_height) {

  1239.             ret = AVERROR(ENOMEM);

  1240.             goto err;

  1241.         }

  1242. 

  1243.         pps->uniform_spacing_flag = get_bits1(gb);

  1244.         if (!pps->uniform_spacing_flag) {

  1245.             uint64_t sum = 0;

  1246.             for (i = 0; i < pps->num_tile_columns - 1; i++) {

  1247.                 pps->column_width[i] = get_ue_golomb_long(gb) + 1;

  1248.                 sum                 += pps->column_width[i];

  1249.             }

  1250.             if (sum >= sps->ctb_width) {

  1251.                 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile widths.\n");

  1252.                 ret = AVERROR_INVALIDDATA;

  1253.                 goto err;

  1254.             }

  1255.             pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;

  1256. 

  1257.             sum = 0;

  1258.             for (i = 0; i < pps->num_tile_rows - 1; i++) {

  1259.                 pps->row_height[i] = get_ue_golomb_long(gb) + 1;

  1260.                 sum               += pps->row_height[i];

  1261.             }

  1262.             if (sum >= sps->ctb_height) {

  1263.                 av_log(s->avctx, AV_LOG_ERROR, "Invalid tile heights.\n");

  1264.                 ret = AVERROR_INVALIDDATA;

  1265.                 goto err;

  1266.             }

  1267.             pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;

  1268.         }

  1269.         pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);

  1270.     }

  1271. 

  1272.     pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);

  1273. 

  1274.     pps->deblocking_filter_control_present_flag = get_bits1(gb);

  1275.     if (pps->deblocking_filter_control_present_flag) {

  1276.         pps->deblocking_filter_override_enabled_flag = get_bits1(gb);

  1277.         pps->disable_dbf                             = get_bits1(gb);

  1278.         if (!pps->disable_dbf) {

  1279.             pps->beta_offset = get_se_golomb(gb) * 2;

  1280.             pps->tc_offset = get_se_golomb(gb) * 2;

  1281.             if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {

  1282.                 av_log(s->avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",

  1283.                        pps->beta_offset/2);

  1284.                 ret = AVERROR_INVALIDDATA;

  1285.                 goto err;

  1286.             }

  1287.             if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {

  1288.                 av_log(s->avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",

  1289.                        pps->tc_offset/2);

  1290.                 ret = AVERROR_INVALIDDATA;

  1291.                 goto err;

  1292.             }

  1293.         }

  1294.     }

  1295. 

  1296.     pps->scaling_list_data_present_flag = get_bits1(gb);

  1297.     if (pps->scaling_list_data_present_flag) {

  1298.         set_default_scaling_list_data(&pps->scaling_list);

  1299.         ret = scaling_list_data(s, &pps->scaling_list, sps);

  1300.         if (ret < 0)

  1301.             goto err;

  1302.     }

  1303.     pps->lists_modification_present_flag = get_bits1(gb);

  1304.     pps->log2_parallel_merge_level       = get_ue_golomb_long(gb) + 2;

  1305.     if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {

  1306.         av_log(s->avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",

  1307.                pps->log2_parallel_merge_level - 2);

  1308.         ret = AVERROR_INVALIDDATA;

  1309.         goto err;

  1310.     }

  1311. 

  1312.     pps->slice_header_extension_present_flag = get_bits1(gb);

  1313. 

  1314.     if (get_bits1(gb)) { // pps_extension_present_flag

  1315.         int pps_range_extensions_flag = get_bits1(gb);

  1316.         /* int pps_extension_7bits = */ get_bits(gb, 7);

  1317.         if (sps->ptl.general_ptl.profile_idc == FF_PROFILE_HEVC_REXT && pps_range_extensions_flag) {

  1318.             pps_range_extensions(s, pps, sps);

  1319.         }

  1320.     }

  1321. 

  1322.     // Inferred parameters

  1323.     pps->col_bd   = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));

  1324.     pps->row_bd   = av_malloc_array(pps->num_tile_rows + 1,    sizeof(*pps->row_bd));

  1325.     pps->col_idxX = av_malloc_array(sps->ctb_width,    sizeof(*pps->col_idxX));

  1326.     if (!pps->col_bd || !pps->row_bd || !pps->col_idxX) {

  1327.         ret = AVERROR(ENOMEM);

  1328.         goto err;

  1329.     }

  1330. 

  1331.     if (pps->uniform_spacing_flag) {

  1332.         if (!pps->column_width) {

  1333.             pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));

  1334.             pps->row_height   = av_malloc_array(pps->num_tile_rows,    sizeof(*pps->row_height));

  1335.         }

  1336.         if (!pps->column_width || !pps->row_height) {

  1337.             ret = AVERROR(ENOMEM);

  1338.             goto err;

  1339.         }

  1340. 

  1341.         for (i = 0; i < pps->num_tile_columns; i++) {

  1342.             pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -

  1343.                                    (i * sps->ctb_width) / pps->num_tile_columns;

  1344.         }

  1345. 

  1346.         for (i = 0; i < pps->num_tile_rows; i++) {

  1347.             pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -

  1348.                                  (i * sps->ctb_height) / pps->num_tile_rows;

  1349.         }

  1350.     }

  1351. 

  1352.     pps->col_bd[0] = 0;

  1353.     for (i = 0; i < pps->num_tile_columns; i++)

  1354.         pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];

  1355. 

  1356.     pps->row_bd[0] = 0;

  1357.     for (i = 0; i < pps->num_tile_rows; i++)

  1358.         pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];

  1359. 

  1360.     for (i = 0, j = 0; i < sps->ctb_width; i++) {

  1361.         if (i > pps->col_bd[j])

  1362.             j++;

  1363.         pps->col_idxX[i] = j;

  1364.     }

  1365. 

  1366.     /**

  1367.      * 6.5

  1368.      */

  1369.     pic_area_in_ctbs     = sps->ctb_width    * sps->ctb_height;

  1370. 

  1371.     pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->ctb_addr_rs_to_ts));

  1372.     pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->ctb_addr_ts_to_rs));

  1373.     pps->tile_id           = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->tile_id));

  1374.     pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));

  1375.     if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||

  1376.         !pps->tile_id || !pps->min_tb_addr_zs_tab) {

  1377.         ret = AVERROR(ENOMEM);

  1378.         goto err;

  1379.     }

  1380. 

  1381.     for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {

  1382.         int tb_x   = ctb_addr_rs % sps->ctb_width;

  1383.         int tb_y   = ctb_addr_rs / sps->ctb_width;

  1384.         int tile_x = 0;

  1385.         int tile_y = 0;

  1386.         int val    = 0;

  1387. 

  1388.         for (i = 0; i < pps->num_tile_columns; i++) {

  1389.             if (tb_x < pps->col_bd[i + 1]) {

  1390.                 tile_x = i;

  1391.                 break;

  1392.             }

  1393.         }

  1394. 

  1395.         for (i = 0; i < pps->num_tile_rows; i++) {

  1396.             if (tb_y < pps->row_bd[i + 1]) {

  1397.                 tile_y = i;

  1398.                 break;

  1399.             }

  1400.         }

  1401. 

  1402.         for (i = 0; i < tile_x; i++)

  1403.             val += pps->row_height[tile_y] * pps->column_width[i];

  1404.         for (i = 0; i < tile_y; i++)

  1405.             val += sps->ctb_width * pps->row_height[i];

  1406. 

  1407.         val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +

  1408.                tb_x - pps->col_bd[tile_x];

  1409. 

  1410.         pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;

  1411.         pps->ctb_addr_ts_to_rs[val]         = ctb_addr_rs;

  1412.     }

  1413. 

  1414.     for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)

  1415.         for (i = 0; i < pps->num_tile_columns; i++, tile_id++)

  1416.             for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)

  1417.                 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)

  1418.                     pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;

  1419. 

  1420.     pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));

  1421.     if (!pps->tile_pos_rs) {

  1422.         ret = AVERROR(ENOMEM);

  1423.         goto err;

  1424.     }

  1425. 

  1426.     for (j = 0; j < pps->num_tile_rows; j++)

  1427.         for (i = 0; i < pps->num_tile_columns; i++)

  1428.             pps->tile_pos_rs[j * pps->num_tile_columns + i] = pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];

  1429. 

  1430.     log2_diff_ctb_min_tb_size = sps->log2_ctb_size - sps->log2_min_tb_size;

  1431.     pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];

  1432.     for (y = 0; y < sps->tb_mask+2; y++) {

  1433.         pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;

  1434.         pps->min_tb_addr_zs_tab[y]    = -1;

  1435.     }

  1436.     for (y = 0; y < sps->tb_mask+1; y++) {

  1437.         for (x = 0; x < sps->tb_mask+1; x++) {

  1438.             int tb_x        = x >> log2_diff_ctb_min_tb_size;

  1439.             int tb_y        = y >> log2_diff_ctb_min_tb_size;

  1440.             int ctb_addr_rs = sps->ctb_width * tb_y + tb_x;

  1441.             int val         = pps->ctb_addr_rs_to_ts[ctb_addr_rs] <<

  1442.                               (log2_diff_ctb_min_tb_size * 2);

  1443.             for (i = 0; i < log2_diff_ctb_min_tb_size; i++) {

  1444.                 int m = 1 << i;

  1445.                 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);

  1446.             }

  1447.             pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;

  1448.         }

  1449.     }

  1450. 

  1451.     av_buffer_unref(&s->pps_list[pps_id]);

  1452.     s->pps_list[pps_id] = pps_buf;

  1453. 

  1454.     return 0;

  1455. 

  1456. err:

  1457.     av_buffer_unref(&pps_buf);

  1458.     return ret;

  1459. }