falkTX
/
FFmpeg
mirror of https://github.com/falkTX/FFmpeg.git
1
0
Fork 0
Code Issues 0 Releases 338 Wiki Activity
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
44689 Commits
32 Branches
824MB
Tree: c5714b51aa
Branches Tags
${ item.name }
Create branch ${ searchTerm }
from 'c5714b51aa'
${ noResults }
FFmpeg/libavcodec/hevc_ps.c

1371 lines
50KB
Raw Blame History 

  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 Libav.

  10.  *

  11.  * Libav 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.  * Libav 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 Libav; 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. 

  28. #include "golomb_legacy.h"

  29. #include "hevc_data.h"

  30. #include "hevc_ps.h"

  31. 

  32. static const uint8_t default_scaling_list_intra[] = {

  33.     16, 16, 16, 16, 17, 18, 21, 24,

  34.     16, 16, 16, 16, 17, 19, 22, 25,

  35.     16, 16, 17, 18, 20, 22, 25, 29,

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

  37.     17, 17, 20, 24, 30, 35, 41, 47,

  38.     18, 19, 22, 27, 35, 44, 54, 65,

  39.     21, 22, 25, 31, 41, 54, 70, 88,

  40.     24, 25, 29, 36, 47, 65, 88, 115

  41. };

  42. 

  43. static const uint8_t default_scaling_list_inter[] = {

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

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

  46.     16, 16, 17, 18, 20, 24, 25, 28,

  47.     16, 17, 18, 20, 24, 25, 28, 33,

  48.     17, 18, 20, 24, 25, 28, 33, 41,

  49.     18, 20, 24, 25, 28, 33, 41, 54,

  50.     20, 24, 25, 28, 33, 41, 54, 71,

  51.     24, 25, 28, 33, 41, 54, 71, 91

  52. };

  53. 

  54. static const AVRational vui_sar[] = {

  55.     {  0,   1 },

  56.     {  1,   1 },

  57.     { 12,  11 },

  58.     { 10,  11 },

  59.     { 16,  11 },

  60.     { 40,  33 },

  61.     { 24,  11 },

  62.     { 20,  11 },

  63.     { 32,  11 },

  64.     { 80,  33 },

  65.     { 18,  11 },

  66.     { 15,  11 },

  67.     { 64,  33 },

  68.     { 160, 99 },

  69.     {  4,   3 },

  70.     {  3,   2 },

  71.     {  2,   1 },

  72. };

  73. 

  74. static void remove_pps(HEVCParamSets *s, int id)

  75. {

  76.     if (s->pps_list[id] && s->pps == (const HEVCPPS*)s->pps_list[id]->data)

  77.         s->pps = NULL;

  78.     av_buffer_unref(&s->pps_list[id]);

  79. }

  80. 

  81. static void remove_sps(HEVCParamSets *s, int id)

  82. {

  83.     int i;

  84.     if (s->sps_list[id]) {

  85.         if (s->sps == (const HEVCSPS*)s->sps_list[id]->data)

  86.             s->sps = NULL;

  87. 

  88.         /* drop all PPS that depend on this SPS */

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

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

  91.                 remove_pps(s, i);

  92.     }

  93.     av_buffer_unref(&s->sps_list[id]);

  94. }

  95. 

  96. static void remove_vps(HEVCParamSets *s, int id)

  97. {

  98.     int i;

  99.     if (s->vps_list[id]) {

  100.         if (s->vps == (const HEVCVPS*)s->vps_list[id]->data)

  101.             s->vps = NULL;

  102. 

  103.         for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)

  104.             if (s->sps_list[i] && ((HEVCSPS*)s->sps_list[i]->data)->vps_id == id)

  105.                 remove_sps(s, i);

  106.     }

  107.     av_buffer_unref(&s->vps_list[id]);

  108. }

  109. 

  110. int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,

  111.                                   ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)

  112. {

  113.     uint8_t rps_predict = 0;

  114.     int delta_poc;

  115.     int k0 = 0;

  116.     int k1 = 0;

  117.     int k  = 0;

  118.     int i;

  119. 

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

  121.         rps_predict = get_bits1(gb);

  122. 

  123.     if (rps_predict) {

  124.         const ShortTermRPS *rps_ridx;

  125.         int delta_rps, abs_delta_rps;

  126.         uint8_t use_delta_flag = 0;

  127.         uint8_t delta_rps_sign;

  128. 

  129.         if (is_slice_header) {

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

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

  132.                 av_log(avctx, AV_LOG_ERROR,

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

  134.                        delta_idx, sps->nb_st_rps);

  135.                 return AVERROR_INVALIDDATA;

  136.             }

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

  138.             rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs;

  139.         } else

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

  141. 

  142.         delta_rps_sign = get_bits1(gb);

  143.         abs_delta_rps  = get_ue_golomb_long(gb) + 1;

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

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

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

  147. 

  148.             if (!used)

  149.                 use_delta_flag = get_bits1(gb);

  150. 

  151.             if (used || use_delta_flag) {

  152.                 if (i < rps_ridx->num_delta_pocs)

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

  154.                 else

  155.                     delta_poc = delta_rps;

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

  157.                 if (delta_poc < 0)

  158.                     k0++;

  159.                 else

  160.                     k1++;

  161.                 k++;

  162.             }

  163.         }

  164. 

  165.         rps->num_delta_pocs    = k;

  166.         rps->num_negative_pics = k0;

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

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

  169.             int used, tmp;

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

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

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

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

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

  175.                     if (delta_poc < tmp) {

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

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

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

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

  180.                     }

  181.                 }

  182.             }

  183.         }

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

  185.             int used;

  186.             k = rps->num_negative_pics - 1;

  187.             // flip the negative values to largest first

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

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

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

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

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

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

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

  195.                 k--;

  196.             }

  197.         }

  198.     } else {

  199.         unsigned int prev, nb_positive_pics;

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

  201.         nb_positive_pics       = get_ue_golomb_long(gb);

  202. 

  203.         if (rps->num_negative_pics >= HEVC_MAX_REFS ||

  204.             nb_positive_pics >= HEVC_MAX_REFS) {

  205.             av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");

  206.             return AVERROR_INVALIDDATA;

  207.         }

  208. 

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

  210.         if (rps->num_delta_pocs) {

  211.             prev = 0;

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

  213.                 delta_poc = get_ue_golomb_long(gb) + 1;

  214.                 prev -= delta_poc;

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

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

  217.             }

  218.             prev = 0;

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

  220.                 delta_poc = get_ue_golomb_long(gb) + 1;

  221.                 prev += delta_poc;

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

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

  224.             }

  225.         }

  226.     }

  227.     return 0;

  228. }

  229. 

  230. 

  231. static void decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,

  232.                                       PTLCommon *ptl)

  233. {

  234.     int i;

  235. 

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

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

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

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

  240.         av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");

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

  242.         av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");

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

  244.         av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");

  245.     else

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

  247. 

  248.     for (i = 0; i < 32; i++) {

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

  250. 

  251.         if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i])

  252.             ptl->profile_idc = i;

  253.     }

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

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

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

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

  258. 

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

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

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

  262. }

  263. 

  264. static void parse_ptl(GetBitContext *gb, AVCodecContext *avctx,

  265.                       PTL *ptl, int max_num_sub_layers)

  266. {

  267.     int i;

  268.     decode_profile_tier_level(gb, avctx, &ptl->general_ptl);

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

  270. 

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

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

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

  274.     }

  275.     if (max_num_sub_layers - 1 > 0)

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

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

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

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

  280.             decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]);

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

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

  283.     }

  284. }

  285. 

  286. static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,

  287.                                 int subpic_params_present)

  288. {

  289.     int i;

  290. 

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

  292.         get_ue_golomb_long(gb); // bit_rate_value_minus1

  293.         get_ue_golomb_long(gb); // cpb_size_value_minus1

  294. 

  295.         if (subpic_params_present) {

  296.             get_ue_golomb_long(gb); // cpb_size_du_value_minus1

  297.             get_ue_golomb_long(gb); // bit_rate_du_value_minus1

  298.         }

  299.         skip_bits1(gb); // cbr_flag

  300.     }

  301. }

  302. 

  303. static void decode_hrd(GetBitContext *gb, int common_inf_present,

  304.                        int max_sublayers)

  305. {

  306.     int nal_params_present = 0, vcl_params_present = 0;

  307.     int subpic_params_present = 0;

  308.     int i;

  309. 

  310.     if (common_inf_present) {

  311.         nal_params_present = get_bits1(gb);

  312.         vcl_params_present = get_bits1(gb);

  313. 

  314.         if (nal_params_present || vcl_params_present) {

  315.             subpic_params_present = get_bits1(gb);

  316. 

  317.             if (subpic_params_present) {

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

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

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

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

  322.             }

  323. 

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

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

  326. 

  327.             if (subpic_params_present)

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

  329. 

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

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

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

  333.         }

  334.     }

  335. 

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

  337.         int low_delay = 0;

  338.         unsigned int nb_cpb = 1;

  339.         int fixed_rate = get_bits1(gb);

  340. 

  341.         if (!fixed_rate)

  342.             fixed_rate = get_bits1(gb);

  343. 

  344.         if (fixed_rate)

  345.             get_ue_golomb_long(gb);  // elemental_duration_in_tc_minus1

  346.         else

  347.             low_delay = get_bits1(gb);

  348. 

  349.         if (!low_delay)

  350.             nb_cpb = get_ue_golomb_long(gb) + 1;

  351. 

  352.         if (nal_params_present)

  353.             decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);

  354.         if (vcl_params_present)

  355.             decode_sublayer_hrd(gb, nb_cpb, subpic_params_present);

  356.     }

  357. }

  358. 

  359. int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,

  360.                            HEVCParamSets *ps)

  361. {

  362.     int i,j;

  363.     int vps_id = 0;

  364.     HEVCVPS *vps;

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

  366. 

  367.     if (!vps_buf)

  368.         return AVERROR(ENOMEM);

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

  370. 

  371.     av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n");

  372. 

  373.     vps_id = get_bits(gb, 4);

  374.     if (vps_id >= HEVC_MAX_VPS_COUNT) {

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

  376.         goto err;

  377.     }

  378. 

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

  380.         av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");

  381.         goto err;

  382.     }

  383. 

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

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

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

  387. 

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

  389.         av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");

  390.         goto err;

  391.     }

  392. 

  393.     if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) {

  394.         av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",

  395.                vps->vps_max_sub_layers);

  396.         goto err;

  397.     }

  398. 

  399.     parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers);

  400. 

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

  402. 

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

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

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

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

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

  408. 

  409.         if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE) {

  410.             av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",

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

  412.             goto err;

  413.         }

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

  415.             av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",

  416.                    vps->vps_num_reorder_pics[i]);

  417.             if (avctx->err_recognition & AV_EF_EXPLODE)

  418.                 goto err;

  419.         }

  420.     }

  421. 

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

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

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

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

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

  427. 

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

  429.     if (vps->vps_timing_info_present_flag) {

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

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

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

  433.         if (vps->vps_poc_proportional_to_timing_flag)

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

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

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

  437.             int common_inf_present = 1;

  438. 

  439.             get_ue_golomb_long(gb); // hrd_layer_set_idx

  440.             if (i)

  441.                 common_inf_present = get_bits1(gb);

  442.             decode_hrd(gb, common_inf_present, vps->vps_max_sub_layers);

  443.         }

  444.     }

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

  446. 

  447.     if (ps->vps_list[vps_id] &&

  448.         !memcmp(ps->vps_list[vps_id]->data, vps_buf->data, vps_buf->size)) {

  449.         av_buffer_unref(&vps_buf);

  450.     } else {

  451.         remove_vps(ps, vps_id);

  452.         ps->vps_list[vps_id] = vps_buf;

  453.     }

  454. 

  455.     return 0;

  456. 

  457. err:

  458.     av_buffer_unref(&vps_buf);

  459.     return AVERROR_INVALIDDATA;

  460. }

  461. 

  462. static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,

  463.                        int apply_defdispwin, HEVCSPS *sps)

  464. {

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

  466.     int sar_present;

  467. 

  468.     av_log(avctx, AV_LOG_DEBUG, "Decoding VUI\n");

  469. 

  470.     sar_present = get_bits1(gb);

  471.     if (sar_present) {

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

  473.         if (sar_idx < FF_ARRAY_ELEMS(vui_sar))

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

  475.         else if (sar_idx == 255) {

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

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

  478.         } else

  479.             av_log(avctx, AV_LOG_WARNING,

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

  481.     }

  482. 

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

  484.     if (vui->overscan_info_present_flag)

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

  486. 

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

  488.     if (vui->video_signal_type_present_flag) {

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

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

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

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

  493.             sps->pix_fmt = AV_PIX_FMT_YUVJ420P;

  494.         if (vui->colour_description_present_flag) {

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

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

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

  498. 

  499.             // Set invalid values to "unspecified"

  500.             if (!av_color_primaries_name(vui->colour_primaries))

  501.                 vui->colour_primaries = AVCOL_PRI_UNSPECIFIED;

  502.             if (!av_color_transfer_name(vui->transfer_characteristic))

  503.                 vui->transfer_characteristic = AVCOL_TRC_UNSPECIFIED;

  504.             if (!av_color_space_name(vui->matrix_coeffs))

  505.                 vui->matrix_coeffs = AVCOL_SPC_UNSPECIFIED;

  506.         }

  507.     }

  508. 

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

  510.     if (vui->chroma_loc_info_present_flag) {

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

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

  513.     }

  514. 

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

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

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

  518. 

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

  520.     if (vui->default_display_window_flag) {

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

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

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

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

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

  526. 

  527.         if (apply_defdispwin &&

  528.             avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {

  529.             av_log(avctx, AV_LOG_DEBUG,

  530.                    "discarding vui default display window, "

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

  532.                    vui->def_disp_win.left_offset,

  533.                    vui->def_disp_win.right_offset,

  534.                    vui->def_disp_win.top_offset,

  535.                    vui->def_disp_win.bottom_offset);

  536. 

  537.             vui->def_disp_win.left_offset   =

  538.             vui->def_disp_win.right_offset  =

  539.             vui->def_disp_win.top_offset    =

  540.             vui->def_disp_win.bottom_offset = 0;

  541.         }

  542.     }

  543. 

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

  545.     if (vui->vui_timing_info_present_flag) {

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

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

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

  549.         if (vui->vui_poc_proportional_to_timing_flag)

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

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

  552.         if (vui->vui_hrd_parameters_present_flag)

  553.             decode_hrd(gb, 1, sps->max_sub_layers);

  554.     }

  555. 

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

  557.     if (vui->bitstream_restriction_flag) {

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

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

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

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

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

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

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

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

  566.     }

  567. }

  568. 

  569. static void set_default_scaling_list_data(ScalingList *sl)

  570. {

  571.     int matrixId;

  572. 

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

  574.         // 4x4 default is 16

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

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

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

  578.     }

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  593. }

  594. 

  595. static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx, ScalingList *sl)

  596. {

  597.     uint8_t scaling_list_pred_mode_flag[4][6];

  598.     int32_t scaling_list_dc_coef[2][6];

  599.     int size_id, matrix_id, i, pos;

  600. 

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

  602.         for (matrix_id = 0; matrix_id < (size_id == 3 ? 2 : 6); matrix_id++) {

  603.             scaling_list_pred_mode_flag[size_id][matrix_id] = get_bits1(gb);

  604.             if (!scaling_list_pred_mode_flag[size_id][matrix_id]) {

  605.                 unsigned int delta = get_ue_golomb_long(gb);

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

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

  608.                 if (delta) {

  609.                     // Copy from previous array.

  610.                     if (matrix_id < delta) {

  611.                         av_log(avctx, AV_LOG_ERROR,

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

  613.                         return AVERROR_INVALIDDATA;

  614.                     }

  615. 

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

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

  618.                            size_id > 0 ? 64 : 16);

  619.                     if (size_id > 1)

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

  621.                 }

  622.             } else {

  623.                 int next_coef, coef_num;

  624.                 int32_t scaling_list_delta_coef;

  625. 

  626.                 next_coef = 8;

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

  628.                 if (size_id > 1) {

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

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

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

  632.                 }

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

  634.                     if (size_id == 0)

  635.                         pos = 4 * ff_hevc_diag_scan4x4_y[i] +

  636.                                   ff_hevc_diag_scan4x4_x[i];

  637.                     else

  638.                         pos = 8 * ff_hevc_diag_scan8x8_y[i] +

  639.                                   ff_hevc_diag_scan8x8_x[i];

  640. 

  641.                     scaling_list_delta_coef = get_se_golomb(gb);

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

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

  644.                 }

  645.             }

  646.         }

  647. 

  648.     return 0;

  649. }

  650. 

  651. static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps)

  652. {

  653.     const AVPixFmtDescriptor *desc;

  654.     if (sps->chroma_format_idc == 1) {

  655.         switch (sps->bit_depth) {

  656.         case 8:  sps->pix_fmt = AV_PIX_FMT_YUV420P;   break;

  657.         case 9:  sps->pix_fmt = AV_PIX_FMT_YUV420P9;  break;

  658.         case 10: sps->pix_fmt = AV_PIX_FMT_YUV420P10; break;

  659.         default:

  660.             avpriv_report_missing_feature(avctx, "Bit depth %d",

  661.                                           sps->bit_depth);

  662.             return AVERROR_PATCHWELCOME;

  663.         }

  664.     } else {

  665.         avpriv_report_missing_feature(avctx, "Non-4:2:0 support");

  666.         return AVERROR_PATCHWELCOME;

  667.     }

  668. 

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

  670.     if (!desc)

  671.         return AVERROR(EINVAL);

  672. 

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

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

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

  676. 

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

  678. 

  679.     return 0;

  680. }

  681. 

  682. int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,

  683.                       int apply_defdispwin, AVBufferRef **vps_list, AVCodecContext *avctx)

  684. {

  685.     HEVCWindow *ow;

  686.     int ret = 0;

  687.     int log2_diff_max_min_transform_block_size;

  688.     int bit_depth_chroma, start, vui_present, sublayer_ordering_info;

  689.     int i;

  690. 

  691.     // Coded parameters

  692. 

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

  694.     if (sps->vps_id >= HEVC_MAX_VPS_COUNT) {

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

  696.         ret = AVERROR_INVALIDDATA;

  697.         goto err;

  698.     }

  699. 

  700.     if (vps_list && !vps_list[sps->vps_id]) {

  701.         av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",

  702.                sps->vps_id);

  703.         ret = AVERROR_INVALIDDATA;

  704.         goto err;

  705.     }

  706. 

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

  708.     if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) {

  709.         av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",

  710.                sps->max_sub_layers);

  711.         ret = AVERROR_INVALIDDATA;

  712.         goto err;

  713.     }

  714. 

  715.     skip_bits1(gb); // temporal_id_nesting_flag

  716. 

  717.     parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers);

  718. 

  719.     *sps_id = get_ue_golomb_long(gb);

  720.     if (*sps_id >= HEVC_MAX_SPS_COUNT) {

  721.         av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);

  722.         ret = AVERROR_INVALIDDATA;

  723.         goto err;

  724.     }

  725. 

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

  727.     if (sps->chroma_format_idc != 1) {

  728.         avpriv_report_missing_feature(avctx, "chroma_format_idc %d",

  729.                                       sps->chroma_format_idc);

  730.         ret = AVERROR_PATCHWELCOME;

  731.         goto err;

  732.     }

  733. 

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

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

  736. 

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

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

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

  740.                                    sps->height, 0, avctx)) < 0)

  741.         goto err;

  742. 

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

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

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

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

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

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

  749. 

  750.         if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {

  751.             av_log(avctx, AV_LOG_DEBUG,

  752.                    "discarding sps conformance window, "

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

  754.                    sps->pic_conf_win.left_offset,

  755.                    sps->pic_conf_win.right_offset,

  756.                    sps->pic_conf_win.top_offset,

  757.                    sps->pic_conf_win.bottom_offset);

  758. 

  759.             sps->pic_conf_win.left_offset   =

  760.             sps->pic_conf_win.right_offset  =

  761.             sps->pic_conf_win.top_offset    =

  762.             sps->pic_conf_win.bottom_offset = 0;

  763.         }

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

  765.     }

  766. 

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

  768.     bit_depth_chroma = get_ue_golomb_long(gb) + 8;

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

  770.         av_log(avctx, AV_LOG_ERROR,

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

  772.                "this is unsupported.\n",

  773.                sps->bit_depth, bit_depth_chroma);

  774.         ret = AVERROR_INVALIDDATA;

  775.         goto err;

  776.     }

  777. 

  778. 

  779.     ret = map_pixel_format(avctx, sps);

  780.     if (ret < 0)

  781.         goto err;

  782. 

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

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

  785.         av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",

  786.                sps->log2_max_poc_lsb - 4);

  787.         ret = AVERROR_INVALIDDATA;

  788.         goto err;

  789.     }

  790. 

  791.     sublayer_ordering_info = get_bits1(gb);

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

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

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

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

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

  797.         if (sps->temporal_layer[i].max_dec_pic_buffering > HEVC_MAX_DPB_SIZE) {

  798.             av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",

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

  800.             ret = AVERROR_INVALIDDATA;

  801.             goto err;

  802.         }

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

  804.             av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",

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

  806.             if (avctx->err_recognition & AV_EF_EXPLODE ||

  807.                 sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {

  808.                 ret = AVERROR_INVALIDDATA;

  809.                 goto err;

  810.             }

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

  812.         }

  813.     }

  814. 

  815.     if (!sublayer_ordering_info) {

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

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

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

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

  820.         }

  821.     }

  822. 

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

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

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

  826.     log2_diff_max_min_transform_block_size   = get_ue_golomb_long(gb);

  827.     sps->log2_max_trafo_size                 = log2_diff_max_min_transform_block_size +

  828.                                                sps->log2_min_tb_size;

  829. 

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

  831.         av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");

  832.         ret = AVERROR_INVALIDDATA;

  833.         goto err;

  834.     }

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

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

  837. 

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

  839.     if (sps->scaling_list_enable_flag) {

  840.         set_default_scaling_list_data(&sps->scaling_list);

  841. 

  842.         if (get_bits1(gb)) {

  843.             ret = scaling_list_data(gb, avctx, &sps->scaling_list);

  844.             if (ret < 0)

  845.                 goto err;

  846.         }

  847.     }

  848. 

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

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

  851. 

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

  853.     if (sps->pcm_enabled_flag) {

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

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

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

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

  858.                                         get_ue_golomb_long(gb);

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

  860.             av_log(avctx, AV_LOG_ERROR,

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

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

  863.             ret = AVERROR_INVALIDDATA;

  864.             goto err;

  865.         }

  866. 

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

  868.     }

  869. 

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

  871.     if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_RPS_COUNT) {

  872.         av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",

  873.                sps->nb_st_rps);

  874.         ret = AVERROR_INVALIDDATA;

  875.         goto err;

  876.     }

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

  878.         if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],

  879.                                                  sps, 0)) < 0)

  880.             goto err;

  881.     }

  882. 

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

  884.     if (sps->long_term_ref_pics_present_flag) {

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

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

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

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

  889.         }

  890.     }

  891. 

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

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

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

  895.     vui_present = get_bits1(gb);

  896.     if (vui_present)

  897.         decode_vui(gb, avctx, apply_defdispwin, sps);

  898.     skip_bits1(gb); // sps_extension_flag

  899. 

  900.     if (apply_defdispwin) {

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

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

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

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

  905.     }

  906. 

  907.     ow = &sps->output_window;

  908.     if (ow->left_offset >= INT_MAX - ow->right_offset     ||

  909.         ow->top_offset  >= INT_MAX - ow->bottom_offset    ||

  910.         ow->left_offset + ow->right_offset  >= sps->width ||

  911.         ow->top_offset  + ow->bottom_offset >= sps->height) {

  912.         av_log(avctx, AV_LOG_WARNING, "Invalid cropping offsets: %u/%u/%u/%u\n",

  913.                ow->left_offset, ow->right_offset, ow->top_offset, ow->bottom_offset);

  914.         if (avctx->err_recognition & AV_EF_EXPLODE) {

  915.             ret = AVERROR_INVALIDDATA;

  916.             goto err;

  917.         }

  918.         av_log(avctx, AV_LOG_WARNING,

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

  920.         memset(ow, 0, sizeof(*ow));

  921.     }

  922. 

  923.     // Inferred parameters

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

  925.                          sps->log2_diff_max_min_coding_block_size;

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

  927. 

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

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

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

  931. 

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

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

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

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

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

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

  938. 

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

  940. 

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

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

  943.         av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");

  944.         goto err;

  945.     }

  946. 

  947.     if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {

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

  949.         goto err;

  950.     }

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

  952.         av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",

  953.                sps->max_transform_hierarchy_depth_inter);

  954.         goto err;

  955.     }

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

  957.         av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",

  958.                sps->max_transform_hierarchy_depth_intra);

  959.         goto err;

  960.     }

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

  962.         av_log(avctx, AV_LOG_ERROR,

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

  964.                sps->log2_max_trafo_size);

  965.         goto err;

  966.     }

  967. 

  968.     return 0;

  969. 

  970. err:

  971.     return ret < 0 ? ret : AVERROR_INVALIDDATA;

  972. }

  973. 

  974. int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,

  975.                            HEVCParamSets *ps, int apply_defdispwin)

  976. {

  977.     HEVCSPS *sps;

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

  979.     unsigned int sps_id;

  980.     int ret;

  981. 

  982.     if (!sps_buf)

  983.         return AVERROR(ENOMEM);

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

  985. 

  986.     av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n");

  987. 

  988.     ret = ff_hevc_parse_sps(sps, gb, &sps_id,

  989.                             apply_defdispwin,

  990.                             ps->vps_list, avctx);

  991.     if (ret < 0) {

  992.         av_buffer_unref(&sps_buf);

  993.         return ret;

  994.     }

  995. 

  996.     if (avctx->debug & FF_DEBUG_BITSTREAM) {

  997.         av_log(avctx, AV_LOG_DEBUG,

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

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

  1000.                sps_id, sps->width, sps->height,

  1001.                sps->width - (sps->output_window.left_offset + sps->output_window.right_offset),

  1002.                sps->height - (sps->output_window.top_offset + sps->output_window.bottom_offset),

  1003.                av_get_pix_fmt_name(sps->pix_fmt));

  1004.     }

  1005. 

  1006.     /* check if this is a repeat of an already parsed SPS, then keep the

  1007.      * original one.

  1008.      * otherwise drop all PPSes that depend on it */

  1009.     if (ps->sps_list[sps_id] &&

  1010.         !memcmp(ps->sps_list[sps_id]->data, sps_buf->data, sps_buf->size)) {

  1011.         av_buffer_unref(&sps_buf);

  1012.     } else {

  1013.         remove_sps(ps, sps_id);

  1014.         ps->sps_list[sps_id] = sps_buf;

  1015.     }

  1016. 

  1017.     return 0;

  1018. }

  1019. 

  1020. static void hevc_pps_free(void *opaque, uint8_t *data)

  1021. {

  1022.     HEVCPPS *pps = (HEVCPPS*)data;

  1023. 

  1024.     av_freep(&pps->column_width);

  1025.     av_freep(&pps->row_height);

  1026.     av_freep(&pps->col_bd);

  1027.     av_freep(&pps->row_bd);

  1028.     av_freep(&pps->col_idxX);

  1029.     av_freep(&pps->ctb_addr_rs_to_ts);

  1030.     av_freep(&pps->ctb_addr_ts_to_rs);

  1031.     av_freep(&pps->tile_pos_rs);

  1032.     av_freep(&pps->tile_id);

  1033.     av_freep(&pps->min_tb_addr_zs);

  1034. 

  1035.     av_freep(&pps);

  1036. }

  1037. 

  1038. static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,

  1039.                             HEVCPPS *pps, HEVCSPS *sps)

  1040. {

  1041.     int log2_diff;

  1042.     int pic_area_in_ctbs, pic_area_in_min_tbs;

  1043.     int i, j, x, y, ctb_addr_rs, tile_id;

  1044. 

  1045.     // Inferred parameters

  1046.     pps->col_bd   = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));

  1047.     pps->row_bd   = av_malloc_array(pps->num_tile_rows + 1,    sizeof(*pps->row_bd));

  1048.     pps->col_idxX = av_malloc_array(sps->ctb_width,    sizeof(*pps->col_idxX));

  1049.     if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)

  1050.         return AVERROR(ENOMEM);

  1051. 

  1052.     if (pps->uniform_spacing_flag) {

  1053.         if (!pps->column_width) {

  1054.             pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));

  1055.             pps->row_height   = av_malloc_array(pps->num_tile_rows,    sizeof(*pps->row_height));

  1056.         }

  1057.         if (!pps->column_width || !pps->row_height)

  1058.             return AVERROR(ENOMEM);

  1059. 

  1060.         for (i = 0; i < pps->num_tile_columns; i++) {

  1061.             pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -

  1062.                                    (i * sps->ctb_width) / pps->num_tile_columns;

  1063.         }

  1064. 

  1065.         for (i = 0; i < pps->num_tile_rows; i++) {

  1066.             pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -

  1067.                                  (i * sps->ctb_height) / pps->num_tile_rows;

  1068.         }

  1069.     }

  1070. 

  1071.     pps->col_bd[0] = 0;

  1072.     for (i = 0; i < pps->num_tile_columns; i++)

  1073.         pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];

  1074. 

  1075.     pps->row_bd[0] = 0;

  1076.     for (i = 0; i < pps->num_tile_rows; i++)

  1077.         pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];

  1078. 

  1079.     for (i = 0, j = 0; i < sps->ctb_width; i++) {

  1080.         if (i > pps->col_bd[j])

  1081.             j++;

  1082.         pps->col_idxX[i] = j;

  1083.     }

  1084. 

  1085.     /**

  1086.      * 6.5

  1087.      */

  1088.     pic_area_in_ctbs     = sps->ctb_width    * sps->ctb_height;

  1089.     pic_area_in_min_tbs  = sps->min_tb_width * sps->min_tb_height;

  1090. 

  1091.     pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->ctb_addr_rs_to_ts));

  1092.     pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->ctb_addr_ts_to_rs));

  1093.     pps->tile_id           = av_malloc_array(pic_area_in_ctbs,    sizeof(*pps->tile_id));

  1094.     pps->min_tb_addr_zs    = av_malloc_array(pic_area_in_min_tbs, sizeof(*pps->min_tb_addr_zs));

  1095.     if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||

  1096.         !pps->tile_id || !pps->min_tb_addr_zs) {

  1097.         return AVERROR(ENOMEM);

  1098.     }

  1099. 

  1100.     for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {

  1101.         int tb_x   = ctb_addr_rs % sps->ctb_width;

  1102.         int tb_y   = ctb_addr_rs / sps->ctb_width;

  1103.         int tile_x = 0;

  1104.         int tile_y = 0;

  1105.         int val    = 0;

  1106. 

  1107.         for (i = 0; i < pps->num_tile_columns; i++) {

  1108.             if (tb_x < pps->col_bd[i + 1]) {

  1109.                 tile_x = i;

  1110.                 break;

  1111.             }

  1112.         }

  1113. 

  1114.         for (i = 0; i < pps->num_tile_rows; i++) {

  1115.             if (tb_y < pps->row_bd[i + 1]) {

  1116.                 tile_y = i;

  1117.                 break;

  1118.             }

  1119.         }

  1120. 

  1121.         for (i = 0; i < tile_x; i++)

  1122.             val += pps->row_height[tile_y] * pps->column_width[i];

  1123.         for (i = 0; i < tile_y; i++)

  1124.             val += sps->ctb_width * pps->row_height[i];

  1125. 

  1126.         val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +

  1127.                tb_x - pps->col_bd[tile_x];

  1128. 

  1129.         pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;

  1130.         pps->ctb_addr_ts_to_rs[val]         = ctb_addr_rs;

  1131.     }

  1132. 

  1133.     for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)

  1134.         for (i = 0; i < pps->num_tile_columns; i++, tile_id++)

  1135.             for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)

  1136.                 for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)

  1137.                     pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;

  1138. 

  1139.     pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));

  1140.     if (!pps->tile_pos_rs)

  1141.         return AVERROR(ENOMEM);

  1142. 

  1143.     for (j = 0; j < pps->num_tile_rows; j++)

  1144.         for (i = 0; i < pps->num_tile_columns; i++)

  1145.             pps->tile_pos_rs[j * pps->num_tile_columns + i] =

  1146.                 pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];

  1147. 

  1148.     log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;

  1149.     for (y = 0; y < sps->min_tb_height; y++) {

  1150.         for (x = 0; x < sps->min_tb_width; x++) {

  1151.             int tb_x = x >> log2_diff;

  1152.             int tb_y = y >> log2_diff;

  1153.             int rs   = sps->ctb_width * tb_y + tb_x;

  1154.             int val  = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);

  1155.             for (i = 0; i < log2_diff; i++) {

  1156.                 int m = 1 << i;

  1157.                 val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);

  1158.             }

  1159.             pps->min_tb_addr_zs[y * sps->min_tb_width + x] = val;

  1160.         }

  1161.     }

  1162. 

  1163.     return 0;

  1164. }

  1165. 

  1166. int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,

  1167.                            HEVCParamSets *ps)

  1168. {

  1169.     HEVCSPS      *sps = NULL;

  1170.     int i, ret = 0;

  1171.     unsigned int pps_id = 0;

  1172. 

  1173.     AVBufferRef *pps_buf;

  1174.     HEVCPPS *pps = av_mallocz(sizeof(*pps));

  1175. 

  1176.     if (!pps)

  1177.         return AVERROR(ENOMEM);

  1178. 

  1179.     pps_buf = av_buffer_create((uint8_t *)pps, sizeof(*pps),

  1180.                                hevc_pps_free, NULL, 0);

  1181.     if (!pps_buf) {

  1182.         av_freep(&pps);

  1183.         return AVERROR(ENOMEM);

  1184.     }

  1185. 

  1186.     av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n");

  1187. 

  1188.     // Default values

  1189.     pps->loop_filter_across_tiles_enabled_flag = 1;

  1190.     pps->num_tile_columns                      = 1;

  1191.     pps->num_tile_rows                         = 1;

  1192.     pps->uniform_spacing_flag                  = 1;

  1193.     pps->disable_dbf                           = 0;

  1194.     pps->beta_offset                           = 0;

  1195.     pps->tc_offset                             = 0;

  1196. 

  1197.     // Coded parameters

  1198.     pps_id = get_ue_golomb_long(gb);

  1199.     if (pps_id >= HEVC_MAX_PPS_COUNT) {

  1200.         av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);

  1201.         ret = AVERROR_INVALIDDATA;

  1202.         goto err;

  1203.     }

  1204.     pps->sps_id = get_ue_golomb_long(gb);

  1205.     if (pps->sps_id >= HEVC_MAX_SPS_COUNT) {

  1206.         av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);

  1207.         ret = AVERROR_INVALIDDATA;

  1208.         goto err;

  1209.     }

  1210.     if (!ps->sps_list[pps->sps_id]) {

  1211.         av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);

  1212.         ret = AVERROR_INVALIDDATA;

  1213.         goto err;

  1214.     }

  1215.     sps = (HEVCSPS *)ps->sps_list[pps->sps_id]->data;

  1216. 

  1217.     pps->dependent_slice_segments_enabled_flag = get_bits1(gb);

  1218.     pps->output_flag_present_flag              = get_bits1(gb);

  1219.     pps->num_extra_slice_header_bits           = get_bits(gb, 3);

  1220. 

  1221.     pps->sign_data_hiding_flag = get_bits1(gb);

  1222. 

  1223.     pps->cabac_init_present_flag = get_bits1(gb);

  1224. 

  1225.     pps->num_ref_idx_l0_default_active = get_ue_golomb_long(gb) + 1;

  1226.     pps->num_ref_idx_l1_default_active = get_ue_golomb_long(gb) + 1;

  1227. 

  1228.     pps->pic_init_qp_minus26 = get_se_golomb(gb);

  1229. 

  1230.     pps->constrained_intra_pred_flag = get_bits1(gb);

  1231.     pps->transform_skip_enabled_flag = get_bits1(gb);

  1232. 

  1233.     pps->cu_qp_delta_enabled_flag = get_bits1(gb);

  1234.     pps->diff_cu_qp_delta_depth   = 0;

  1235.     if (pps->cu_qp_delta_enabled_flag)

  1236.         pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);

  1237. 

  1238.     pps->cb_qp_offset = get_se_golomb(gb);

  1239.     if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {

  1240.         av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",

  1241.                pps->cb_qp_offset);

  1242.         ret = AVERROR_INVALIDDATA;

  1243.         goto err;

  1244.     }

  1245.     pps->cr_qp_offset = get_se_golomb(gb);

  1246.     if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {

  1247.         av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",

  1248.                pps->cr_qp_offset);

  1249.         ret = AVERROR_INVALIDDATA;

  1250.         goto err;

  1251.     }

  1252.     pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);

  1253. 

  1254.     pps->weighted_pred_flag   = get_bits1(gb);

  1255.     pps->weighted_bipred_flag = get_bits1(gb);

  1256. 

  1257.     pps->transquant_bypass_enable_flag    = get_bits1(gb);

  1258.     pps->tiles_enabled_flag               = get_bits1(gb);

  1259.     pps->entropy_coding_sync_enabled_flag = get_bits1(gb);

  1260. 

  1261.     if (pps->tiles_enabled_flag) {

  1262.         pps->num_tile_columns = get_ue_golomb_long(gb) + 1;

  1263.         pps->num_tile_rows    = get_ue_golomb_long(gb) + 1;

  1264.         if (pps->num_tile_columns == 0 ||

  1265.             pps->num_tile_columns >= sps->width) {

  1266.             av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",

  1267.                    pps->num_tile_columns - 1);

  1268.             ret = AVERROR_INVALIDDATA;

  1269.             goto err;

  1270.         }

  1271.         if (pps->num_tile_rows == 0 ||

  1272.             pps->num_tile_rows >= sps->height) {

  1273.             av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",

  1274.                    pps->num_tile_rows - 1);

  1275.             ret = AVERROR_INVALIDDATA;

  1276.             goto err;

  1277.         }

  1278. 

  1279.         pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));

  1280.         pps->row_height   = av_malloc_array(pps->num_tile_rows,    sizeof(*pps->row_height));

  1281.         if (!pps->column_width || !pps->row_height) {

  1282.             ret = AVERROR(ENOMEM);

  1283.             goto err;

  1284.         }

  1285. 

  1286.         pps->uniform_spacing_flag = get_bits1(gb);

  1287.         if (!pps->uniform_spacing_flag) {

  1288.             uint64_t sum = 0;

  1289.             for (i = 0; i < pps->num_tile_columns - 1; i++) {

  1290.                 pps->column_width[i] = get_ue_golomb_long(gb) + 1;

  1291.                 sum                 += pps->column_width[i];

  1292.             }

  1293.             if (sum >= sps->ctb_width) {

  1294.                 av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n");

  1295.                 ret = AVERROR_INVALIDDATA;

  1296.                 goto err;

  1297.             }

  1298.             pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;

  1299. 

  1300.             sum = 0;

  1301.             for (i = 0; i < pps->num_tile_rows - 1; i++) {

  1302.                 pps->row_height[i] = get_ue_golomb_long(gb) + 1;

  1303.                 sum               += pps->row_height[i];

  1304.             }

  1305.             if (sum >= sps->ctb_height) {

  1306.                 av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n");

  1307.                 ret = AVERROR_INVALIDDATA;

  1308.                 goto err;

  1309.             }

  1310.             pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;

  1311.         }

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

  1313.     }

  1314. 

  1315.     pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);

  1316. 

  1317.     pps->deblocking_filter_control_present_flag = get_bits1(gb);

  1318.     if (pps->deblocking_filter_control_present_flag) {

  1319.         pps->deblocking_filter_override_enabled_flag = get_bits1(gb);

  1320.         pps->disable_dbf                             = get_bits1(gb);

  1321.         if (!pps->disable_dbf) {

  1322.             pps->beta_offset = get_se_golomb(gb) * 2;

  1323.             pps->tc_offset = get_se_golomb(gb) * 2;

  1324.             if (pps->beta_offset/2 < -6 || pps->beta_offset/2 > 6) {

  1325.                 av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",

  1326.                        pps->beta_offset/2);

  1327.                 ret = AVERROR_INVALIDDATA;

  1328.                 goto err;

  1329.             }

  1330.             if (pps->tc_offset/2 < -6 || pps->tc_offset/2 > 6) {

  1331.                 av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",

  1332.                        pps->tc_offset/2);

  1333.                 ret = AVERROR_INVALIDDATA;

  1334.                 goto err;

  1335.             }

  1336.         }

  1337.     }

  1338. 

  1339.     pps->scaling_list_data_present_flag = get_bits1(gb);

  1340.     if (pps->scaling_list_data_present_flag) {

  1341.         set_default_scaling_list_data(&pps->scaling_list);

  1342.         ret = scaling_list_data(gb, avctx, &pps->scaling_list);

  1343.         if (ret < 0)

  1344.             goto err;

  1345.     }

  1346.     pps->lists_modification_present_flag = get_bits1(gb);

  1347.     pps->log2_parallel_merge_level       = get_ue_golomb_long(gb) + 2;

  1348.     if (pps->log2_parallel_merge_level > sps->log2_ctb_size) {

  1349.         av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",

  1350.                pps->log2_parallel_merge_level - 2);

  1351.         ret = AVERROR_INVALIDDATA;

  1352.         goto err;

  1353.     }

  1354. 

  1355.     pps->slice_header_extension_present_flag = get_bits1(gb);

  1356.     skip_bits1(gb);     // pps_extension_flag

  1357. 

  1358.     ret = setup_pps(avctx, gb, pps, sps);

  1359.     if (ret < 0)

  1360.         goto err;

  1361. 

  1362.     remove_pps(ps, pps_id);

  1363.     ps->pps_list[pps_id] = pps_buf;

  1364. 

  1365.     return 0;

  1366. 

  1367. err:

  1368.     av_buffer_unref(&pps_buf);

  1369.     return ret;

  1370. }