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FFmpeg/libavcodec/hevc_ps.c
Michael Niedermayer d58037c18e
avcodec/hevc_ps: --typo 
Fixes: null pointer dereference
Fixes: 67737/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_HEVC_fuzzer-4858162608930816

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Reviewed-by: James Almer <jamrial@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
2024-04-03 00:44:37 +02:00

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/*
* HEVC Parameter Set decoding
*
* Copyright (C) 2012 - 2013 Guillaume Martres
* Copyright (C) 2012 - 2013 Mickael Raulet
* Copyright (C) 2012 - 2013 Gildas Cocherel
* Copyright (C) 2013 Vittorio Giovara
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/imgutils.h"
#include "libavutil/mem.h"
#include "golomb.h"
#include "h2645_vui.h"
#include "hevc_data.h"
#include "hevc_ps.h"
#include "refstruct.h"
static const uint8_t default_scaling_list_intra[] = {
16, 16, 16, 16, 17, 18, 21, 24,
16, 16, 16, 16, 17, 19, 22, 25,
16, 16, 17, 18, 20, 22, 25, 29,
16, 16, 18, 21, 24, 27, 31, 36,
17, 17, 20, 24, 30, 35, 41, 47,
18, 19, 22, 27, 35, 44, 54, 65,
21, 22, 25, 31, 41, 54, 70, 88,
24, 25, 29, 36, 47, 65, 88, 115
};
static const uint8_t default_scaling_list_inter[] = {
16, 16, 16, 16, 17, 18, 20, 24,
16, 16, 16, 17, 18, 20, 24, 25,
16, 16, 17, 18, 20, 24, 25, 28,
16, 17, 18, 20, 24, 25, 28, 33,
17, 18, 20, 24, 25, 28, 33, 41,
18, 20, 24, 25, 28, 33, 41, 54,
20, 24, 25, 28, 33, 41, 54, 71,
24, 25, 28, 33, 41, 54, 71, 91
};
static const uint8_t hevc_sub_width_c[] = {
1, 2, 2, 1
};
static const uint8_t hevc_sub_height_c[] = {
1, 2, 1, 1
};
static void remove_pps(HEVCParamSets *s, int id)
{
if (s->pps == s->pps_list[id])
s->pps = NULL;
ff_refstruct_unref(&s->pps_list[id]);
}
static void remove_sps(HEVCParamSets *s, int id)
{
int i;
if (s->sps_list[id]) {
if (s->sps == s->sps_list[id])
s->sps = NULL;
/* drop all PPS that depend on this SPS */
for (i = 0; i < FF_ARRAY_ELEMS(s->pps_list); i++)
if (s->pps_list[i] && s->pps_list[i]->sps_id == id)
remove_pps(s, i);
av_assert0(!(s->sps_list[id] && s->sps == s->sps_list[id]));
ff_refstruct_unref(&s->sps_list[id]);
}
}
static void remove_vps(HEVCParamSets *s, int id)
{
int i;
if (s->vps_list[id]) {
if (s->vps == s->vps_list[id])
s->vps = NULL;
for (i = 0; i < FF_ARRAY_ELEMS(s->sps_list); i++)
if (s->sps_list[i] && s->sps_list[i]->vps_id == id)
remove_sps(s, i);
ff_refstruct_unref(&s->vps_list[id]);
}
}
int ff_hevc_decode_short_term_rps(GetBitContext *gb, AVCodecContext *avctx,
ShortTermRPS *rps, const HEVCSPS *sps, int is_slice_header)
{
int delta_poc;
int k0 = 0;
int k = 0;
int i;
rps->rps_predict = 0;
if (rps != sps->st_rps && sps->nb_st_rps)
rps->rps_predict = get_bits1(gb);
if (rps->rps_predict) {
const ShortTermRPS *rps_ridx;
int delta_rps;
if (is_slice_header) {
rps->delta_idx = get_ue_golomb_long(gb) + 1;
if (rps->delta_idx > sps->nb_st_rps) {
av_log(avctx, AV_LOG_ERROR,
"Invalid value of delta_idx in slice header RPS: %d > %d.\n",
rps->delta_idx, sps->nb_st_rps);
return AVERROR_INVALIDDATA;
}
rps_ridx = &sps->st_rps[sps->nb_st_rps - rps->delta_idx];
rps->rps_idx_num_delta_pocs = rps_ridx->num_delta_pocs;
} else
rps_ridx = &sps->st_rps[rps - sps->st_rps - 1];
rps->delta_rps_sign = get_bits1(gb);
rps->abs_delta_rps = get_ue_golomb_long(gb) + 1;
if (rps->abs_delta_rps > 32768) {
av_log(avctx, AV_LOG_ERROR,
"Invalid value of abs_delta_rps: %d\n",
rps->abs_delta_rps);
return AVERROR_INVALIDDATA;
}
delta_rps = (1 - (rps->delta_rps_sign << 1)) * rps->abs_delta_rps;
for (i = 0; i <= rps_ridx->num_delta_pocs; i++) {
int used = rps->used[k] = get_bits1(gb);
rps->use_delta_flag = 0;
if (!used)
rps->use_delta_flag = get_bits1(gb);
if (used || rps->use_delta_flag) {
if (i < rps_ridx->num_delta_pocs)
delta_poc = delta_rps + rps_ridx->delta_poc[i];
else
delta_poc = delta_rps;
rps->delta_poc[k] = delta_poc;
if (delta_poc < 0)
k0++;
k++;
}
}
if (k >= FF_ARRAY_ELEMS(rps->used)) {
av_log(avctx, AV_LOG_ERROR,
"Invalid num_delta_pocs: %d\n", k);
return AVERROR_INVALIDDATA;
}
rps->num_delta_pocs = k;
rps->num_negative_pics = k0;
// sort in increasing order (smallest first)
if (rps->num_delta_pocs != 0) {
int used, tmp;
for (i = 1; i < rps->num_delta_pocs; i++) {
delta_poc = rps->delta_poc[i];
used = rps->used[i];
for (k = i - 1; k >= 0; k--) {
tmp = rps->delta_poc[k];
if (delta_poc < tmp) {
rps->delta_poc[k + 1] = tmp;
rps->used[k + 1] = rps->used[k];
rps->delta_poc[k] = delta_poc;
rps->used[k] = used;
}
}
}
}
if ((rps->num_negative_pics >> 1) != 0) {
int used;
k = rps->num_negative_pics - 1;
// flip the negative values to largest first
for (i = 0; i < rps->num_negative_pics >> 1; i++) {
delta_poc = rps->delta_poc[i];
used = rps->used[i];
rps->delta_poc[i] = rps->delta_poc[k];
rps->used[i] = rps->used[k];
rps->delta_poc[k] = delta_poc;
rps->used[k] = used;
k--;
}
}
} else {
unsigned int prev, nb_positive_pics;
rps->num_negative_pics = get_ue_golomb_long(gb);
nb_positive_pics = get_ue_golomb_long(gb);
if (rps->num_negative_pics >= HEVC_MAX_REFS ||
nb_positive_pics >= HEVC_MAX_REFS) {
av_log(avctx, AV_LOG_ERROR, "Too many refs in a short term RPS.\n");
return AVERROR_INVALIDDATA;
}
rps->num_delta_pocs = rps->num_negative_pics + nb_positive_pics;
if (rps->num_delta_pocs) {
prev = 0;
for (i = 0; i < rps->num_negative_pics; i++) {
delta_poc = rps->delta_poc_s0[i] = get_ue_golomb_long(gb) + 1;
if (delta_poc < 1 || delta_poc > 32768) {
av_log(avctx, AV_LOG_ERROR,
"Invalid value of delta_poc: %d\n",
delta_poc);
return AVERROR_INVALIDDATA;
}
prev -= delta_poc;
rps->delta_poc[i] = prev;
rps->used[i] = get_bits1(gb);
}
prev = 0;
for (i = 0; i < nb_positive_pics; i++) {
delta_poc = rps->delta_poc_s1[i] = get_ue_golomb_long(gb) + 1;
if (delta_poc < 1 || delta_poc > 32768) {
av_log(avctx, AV_LOG_ERROR,
"Invalid value of delta_poc: %d\n",
delta_poc);
return AVERROR_INVALIDDATA;
}
prev += delta_poc;
rps->delta_poc[rps->num_negative_pics + i] = prev;
rps->used[rps->num_negative_pics + i] = get_bits1(gb);
}
}
}
return 0;
}
static int decode_profile_tier_level(GetBitContext *gb, AVCodecContext *avctx,
PTLCommon *ptl)
{
int i;
if (get_bits_left(gb) < 2+1+5 + 32 + 4 + 43 + 1)
return -1;
ptl->profile_space = get_bits(gb, 2);
ptl->tier_flag = get_bits1(gb);
ptl->profile_idc = get_bits(gb, 5);
if (ptl->profile_idc == AV_PROFILE_HEVC_MAIN)
av_log(avctx, AV_LOG_DEBUG, "Main profile bitstream\n");
else if (ptl->profile_idc == AV_PROFILE_HEVC_MAIN_10)
av_log(avctx, AV_LOG_DEBUG, "Main 10 profile bitstream\n");
else if (ptl->profile_idc == AV_PROFILE_HEVC_MAIN_STILL_PICTURE)
av_log(avctx, AV_LOG_DEBUG, "Main Still Picture profile bitstream\n");
else if (ptl->profile_idc == AV_PROFILE_HEVC_REXT)
av_log(avctx, AV_LOG_DEBUG, "Range Extension profile bitstream\n");
else if (ptl->profile_idc == AV_PROFILE_HEVC_SCC)
av_log(avctx, AV_LOG_DEBUG, "Screen Content Coding Extension profile bitstream\n");
else
av_log(avctx, AV_LOG_WARNING, "Unknown HEVC profile: %d\n", ptl->profile_idc);
for (i = 0; i < 32; i++) {
ptl->profile_compatibility_flag[i] = get_bits1(gb);
if (ptl->profile_idc == 0 && i > 0 && ptl->profile_compatibility_flag[i])
ptl->profile_idc = i;
}
ptl->progressive_source_flag = get_bits1(gb);
ptl->interlaced_source_flag = get_bits1(gb);
ptl->non_packed_constraint_flag = get_bits1(gb);
ptl->frame_only_constraint_flag = get_bits1(gb);
#define check_profile_idc(idc) \
ptl->profile_idc == idc || ptl->profile_compatibility_flag[idc]
if (check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(6) ||
check_profile_idc(7) || check_profile_idc(8) || check_profile_idc(9) ||
check_profile_idc(10)) {
ptl->max_12bit_constraint_flag = get_bits1(gb);
ptl->max_10bit_constraint_flag = get_bits1(gb);
ptl->max_8bit_constraint_flag = get_bits1(gb);
ptl->max_422chroma_constraint_flag = get_bits1(gb);
ptl->max_420chroma_constraint_flag = get_bits1(gb);
ptl->max_monochrome_constraint_flag = get_bits1(gb);
ptl->intra_constraint_flag = get_bits1(gb);
ptl->one_picture_only_constraint_flag = get_bits1(gb);
ptl->lower_bit_rate_constraint_flag = get_bits1(gb);
if (check_profile_idc(5) || check_profile_idc(9) || check_profile_idc(10)) {
ptl->max_14bit_constraint_flag = get_bits1(gb);
skip_bits_long(gb, 33); // XXX_reserved_zero_33bits[0..32]
} else {
skip_bits_long(gb, 34); // XXX_reserved_zero_34bits[0..33]
}
} else if (check_profile_idc(2)) {
skip_bits(gb, 7);
ptl->one_picture_only_constraint_flag = get_bits1(gb);
skip_bits_long(gb, 35); // XXX_reserved_zero_35bits[0..34]
} else {
skip_bits_long(gb, 43); // XXX_reserved_zero_43bits[0..42]
}
if (check_profile_idc(1) || check_profile_idc(2) || check_profile_idc(3) ||
check_profile_idc(4) || check_profile_idc(5) || check_profile_idc(9))
ptl->inbld_flag = get_bits1(gb);
else
skip_bits1(gb);
#undef check_profile_idc
return 0;
}
static int parse_ptl(GetBitContext *gb, AVCodecContext *avctx,
PTL *ptl, int max_num_sub_layers)
{
int i;
if (decode_profile_tier_level(gb, avctx, &ptl->general_ptl) < 0 ||
get_bits_left(gb) < 8 + (8*2 * (max_num_sub_layers - 1 > 0))) {
av_log(avctx, AV_LOG_ERROR, "PTL information too short\n");
return -1;
}
ptl->general_ptl.level_idc = get_bits(gb, 8);
for (i = 0; i < max_num_sub_layers - 1; i++) {
ptl->sub_layer_profile_present_flag[i] = get_bits1(gb);
ptl->sub_layer_level_present_flag[i] = get_bits1(gb);
}
if (max_num_sub_layers - 1> 0)
for (i = max_num_sub_layers - 1; i < 8; i++)
skip_bits(gb, 2); // reserved_zero_2bits[i]
for (i = 0; i < max_num_sub_layers - 1; i++) {
if (ptl->sub_layer_profile_present_flag[i] &&
decode_profile_tier_level(gb, avctx, &ptl->sub_layer_ptl[i]) < 0) {
av_log(avctx, AV_LOG_ERROR,
"PTL information for sublayer %i too short\n", i);
return -1;
}
if (ptl->sub_layer_level_present_flag[i]) {
if (get_bits_left(gb) < 8) {
av_log(avctx, AV_LOG_ERROR,
"Not enough data for sublayer %i level_idc\n", i);
return -1;
} else
ptl->sub_layer_ptl[i].level_idc = get_bits(gb, 8);
}
}
return 0;
}
static void decode_sublayer_hrd(GetBitContext *gb, unsigned int nb_cpb,
HEVCSublayerHdrParams *par, int subpic_params_present)
{
int i;
for (i = 0; i < nb_cpb; i++) {
par->bit_rate_value_minus1[i] = get_ue_golomb_long(gb);
par->cpb_size_value_minus1[i] = get_ue_golomb_long(gb);
if (subpic_params_present) {
par->cpb_size_du_value_minus1[i] = get_ue_golomb_long(gb);
par->bit_rate_du_value_minus1[i] = get_ue_golomb_long(gb);
}
par->cbr_flag |= get_bits1(gb) << i;
}
}
static int decode_hrd(GetBitContext *gb, int common_inf_present,
HEVCHdrParams *hdr, int max_sublayers)
{
if (common_inf_present) {
hdr->nal_hrd_parameters_present_flag = get_bits1(gb);
hdr->vcl_hrd_parameters_present_flag = get_bits1(gb);
if (hdr->nal_hrd_parameters_present_flag ||
hdr->vcl_hrd_parameters_present_flag) {
hdr->sub_pic_hrd_params_present_flag = get_bits1(gb);
if (hdr->sub_pic_hrd_params_present_flag) {
hdr->tick_divisor_minus2 = get_bits(gb, 8);
hdr->du_cpb_removal_delay_increment_length_minus1 = get_bits(gb, 5);
hdr->sub_pic_cpb_params_in_pic_timing_sei_flag = get_bits1(gb);
hdr->dpb_output_delay_du_length_minus1 = get_bits(gb, 5);
}
hdr->bit_rate_scale = get_bits(gb, 4);
hdr->cpb_size_scale = get_bits(gb, 4);
if (hdr->sub_pic_hrd_params_present_flag)
hdr->cpb_size_du_scale = get_bits(gb, 4);
hdr->initial_cpb_removal_delay_length_minus1 = get_bits(gb, 5);
hdr->au_cpb_removal_delay_length_minus1 = get_bits(gb, 5);
hdr->dpb_output_delay_length_minus1 = get_bits(gb, 5);
}
}
for (int i = 0; i < max_sublayers; i++) {
unsigned fixed_pic_rate_general_flag = get_bits1(gb);
unsigned fixed_pic_rate_within_cvs_flag = 0;
unsigned low_delay_hrd_flag = 0;
hdr->flags.fixed_pic_rate_general_flag |= fixed_pic_rate_general_flag << i;
if (!fixed_pic_rate_general_flag)
fixed_pic_rate_within_cvs_flag = get_bits1(gb);
hdr->flags.fixed_pic_rate_within_cvs_flag |= fixed_pic_rate_within_cvs_flag << i;
if (fixed_pic_rate_within_cvs_flag || fixed_pic_rate_general_flag)
hdr->elemental_duration_in_tc_minus1[i] = get_ue_golomb_long(gb);
else
low_delay_hrd_flag = get_bits1(gb);
hdr->flags.low_delay_hrd_flag |= low_delay_hrd_flag << i;
if (!low_delay_hrd_flag) {
unsigned cpb_cnt_minus1 = get_ue_golomb_long(gb);
if (cpb_cnt_minus1 > 31) {
av_log(NULL, AV_LOG_ERROR, "nb_cpb %d invalid\n",
cpb_cnt_minus1);
return AVERROR_INVALIDDATA;
}
hdr->cpb_cnt_minus1[i] = cpb_cnt_minus1;
}
if (hdr->nal_hrd_parameters_present_flag)
decode_sublayer_hrd(gb, hdr->cpb_cnt_minus1[i]+1, &hdr->nal_params[i],
hdr->sub_pic_hrd_params_present_flag);
if (hdr->vcl_hrd_parameters_present_flag)
decode_sublayer_hrd(gb, hdr->cpb_cnt_minus1[i]+1, &hdr->vcl_params[i],
hdr->sub_pic_hrd_params_present_flag);
}
return 0;
}
static void hevc_vps_free(FFRefStructOpaque opaque, void *obj)
{
HEVCVPS *vps = obj;
av_freep(&vps->hdr);
av_freep(&vps->data);
}
int ff_hevc_decode_nal_vps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps)
{
int i,j;
int vps_id = get_bits(gb, 4);
ptrdiff_t nal_size = gb->buffer_end - gb->buffer;
int ret = AVERROR_INVALIDDATA;
HEVCVPS *vps;
if (ps->vps_list[vps_id]) {
const HEVCVPS *vps1 = ps->vps_list[vps_id];
if (vps1->data_size == nal_size &&
!memcmp(vps1->data, gb->buffer, vps1->data_size))
return 0;
}
vps = ff_refstruct_alloc_ext(sizeof(*vps), 0, NULL, hevc_vps_free);
if (!vps)
return AVERROR(ENOMEM);
av_log(avctx, AV_LOG_DEBUG, "Decoding VPS\n");
vps->data_size = nal_size;
vps->data = av_memdup(gb->buffer, nal_size);
if (!vps->data) {
ret = AVERROR(ENOMEM);
goto err;
}
vps->vps_id = vps_id;
if (get_bits(gb, 2) != 3) { // vps_reserved_three_2bits
av_log(avctx, AV_LOG_ERROR, "vps_reserved_three_2bits is not three\n");
goto err;
}
vps->vps_max_layers = get_bits(gb, 6) + 1;
vps->vps_max_sub_layers = get_bits(gb, 3) + 1;
vps->vps_temporal_id_nesting_flag = get_bits1(gb);
if (get_bits(gb, 16) != 0xffff) { // vps_reserved_ffff_16bits
av_log(avctx, AV_LOG_ERROR, "vps_reserved_ffff_16bits is not 0xffff\n");
goto err;
}
if (vps->vps_max_sub_layers > HEVC_MAX_SUB_LAYERS) {
av_log(avctx, AV_LOG_ERROR, "vps_max_sub_layers out of range: %d\n",
vps->vps_max_sub_layers);
goto err;
}
if (parse_ptl(gb, avctx, &vps->ptl, vps->vps_max_sub_layers) < 0)
goto err;
vps->vps_sub_layer_ordering_info_present_flag = get_bits1(gb);
i = vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers - 1;
for (; i < vps->vps_max_sub_layers; i++) {
vps->vps_max_dec_pic_buffering[i] = get_ue_golomb_long(gb) + 1;
vps->vps_num_reorder_pics[i] = get_ue_golomb_long(gb);
vps->vps_max_latency_increase[i] = get_ue_golomb_long(gb) - 1;
if (vps->vps_max_dec_pic_buffering[i] > HEVC_MAX_DPB_SIZE || !vps->vps_max_dec_pic_buffering[i]) {
av_log(avctx, AV_LOG_ERROR, "vps_max_dec_pic_buffering_minus1 out of range: %d\n",
vps->vps_max_dec_pic_buffering[i] - 1);
goto err;
}
if (vps->vps_num_reorder_pics[i] > vps->vps_max_dec_pic_buffering[i] - 1) {
av_log(avctx, AV_LOG_WARNING, "vps_max_num_reorder_pics out of range: %d\n",
vps->vps_num_reorder_pics[i]);
if (avctx->err_recognition & AV_EF_EXPLODE)
goto err;
}
}
vps->vps_max_layer_id = get_bits(gb, 6);
vps->vps_num_layer_sets = get_ue_golomb_long(gb) + 1;
if (vps->vps_num_layer_sets < 1 || vps->vps_num_layer_sets > 1024 ||
(vps->vps_num_layer_sets - 1LL) * (vps->vps_max_layer_id + 1LL) > get_bits_left(gb)) {
av_log(avctx, AV_LOG_ERROR, "too many layer_id_included_flags\n");
goto err;
}
for (i = 1; i < vps->vps_num_layer_sets; i++)
for (j = 0; j <= vps->vps_max_layer_id; j++)
skip_bits(gb, 1); // layer_id_included_flag[i][j]
vps->vps_timing_info_present_flag = get_bits1(gb);
if (vps->vps_timing_info_present_flag) {
vps->vps_num_units_in_tick = get_bits_long(gb, 32);
vps->vps_time_scale = get_bits_long(gb, 32);
vps->vps_poc_proportional_to_timing_flag = get_bits1(gb);
if (vps->vps_poc_proportional_to_timing_flag)
vps->vps_num_ticks_poc_diff_one = get_ue_golomb_long(gb) + 1;
vps->vps_num_hrd_parameters = get_ue_golomb_long(gb);
if (vps->vps_num_hrd_parameters > (unsigned)vps->vps_num_layer_sets) {
av_log(avctx, AV_LOG_ERROR,
"vps_num_hrd_parameters %d is invalid\n", vps->vps_num_hrd_parameters);
goto err;
}
if (vps->vps_num_hrd_parameters) {
vps->hdr = av_calloc(vps->vps_num_hrd_parameters, sizeof(*vps->hdr));
if (!vps->hdr)
goto err;
}
for (i = 0; i < vps->vps_num_hrd_parameters; i++) {
int common_inf_present = 1;
get_ue_golomb_long(gb); // hrd_layer_set_idx
if (i)
common_inf_present = get_bits1(gb);
decode_hrd(gb, common_inf_present, &vps->hdr[i],
vps->vps_max_sub_layers);
}
}
get_bits1(gb); /* vps_extension_flag */
if (get_bits_left(gb) < 0) {
av_log(avctx, AV_LOG_ERROR,
"Overread VPS by %d bits\n", -get_bits_left(gb));
if (ps->vps_list[vps_id])
goto err;
}
remove_vps(ps, vps_id);
ps->vps_list[vps_id] = vps;
return 0;
err:
ff_refstruct_unref(&vps);
return ret;
}
static void decode_vui(GetBitContext *gb, AVCodecContext *avctx,
int apply_defdispwin, HEVCSPS *sps)
{
VUI backup_vui, *vui = &sps->vui;
GetBitContext backup;
int alt = 0;
ff_h2645_decode_common_vui_params(gb, &sps->vui.common, avctx);
if (vui->common.video_signal_type_present_flag) {
if (vui->common.video_full_range_flag && sps->pix_fmt == AV_PIX_FMT_YUV420P)
sps->pix_fmt = AV_PIX_FMT_YUVJ420P;
if (vui->common.colour_description_present_flag) {
if (vui->common.matrix_coeffs == AVCOL_SPC_RGB) {
switch (sps->pix_fmt) {
case AV_PIX_FMT_YUV444P:
sps->pix_fmt = AV_PIX_FMT_GBRP;
break;
case AV_PIX_FMT_YUV444P10:
sps->pix_fmt = AV_PIX_FMT_GBRP10;
break;
case AV_PIX_FMT_YUV444P12:
sps->pix_fmt = AV_PIX_FMT_GBRP12;
break;
}
}
}
}
vui->neutra_chroma_indication_flag = get_bits1(gb);
vui->field_seq_flag = get_bits1(gb);
vui->frame_field_info_present_flag = get_bits1(gb);
// Backup context in case an alternate header is detected
memcpy(&backup, gb, sizeof(backup));
memcpy(&backup_vui, vui, sizeof(backup_vui));
if (get_bits_left(gb) >= 68 && show_bits(gb, 21) == 0x100000) {
vui->default_display_window_flag = 0;
av_log(avctx, AV_LOG_WARNING, "Invalid default display window\n");
} else
vui->default_display_window_flag = get_bits1(gb);
if (vui->default_display_window_flag) {
int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
vui->def_disp_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
vui->def_disp_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
vui->def_disp_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
vui->def_disp_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
if (apply_defdispwin &&
avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
av_log(avctx, AV_LOG_DEBUG,
"discarding vui default display window, "
"original values are l:%u r:%u t:%u b:%u\n",
vui->def_disp_win.left_offset,
vui->def_disp_win.right_offset,
vui->def_disp_win.top_offset,
vui->def_disp_win.bottom_offset);
vui->def_disp_win.left_offset =
vui->def_disp_win.right_offset =
vui->def_disp_win.top_offset =
vui->def_disp_win.bottom_offset = 0;
}
}
timing_info:
vui->vui_timing_info_present_flag = get_bits1(gb);
if (vui->vui_timing_info_present_flag) {
if( get_bits_left(gb) < 66 && !alt) {
// The alternate syntax seem to have timing info located
// at where def_disp_win is normally located
av_log(avctx, AV_LOG_WARNING,
"Strange VUI timing information, retrying...\n");
memcpy(vui, &backup_vui, sizeof(backup_vui));
memcpy(gb, &backup, sizeof(backup));
alt = 1;
goto timing_info;
}
vui->vui_num_units_in_tick = get_bits_long(gb, 32);
vui->vui_time_scale = get_bits_long(gb, 32);
if (alt) {
av_log(avctx, AV_LOG_INFO, "Retry got %"PRIu32"/%"PRIu32" fps\n",
vui->vui_time_scale, vui->vui_num_units_in_tick);
}
vui->vui_poc_proportional_to_timing_flag = get_bits1(gb);
if (vui->vui_poc_proportional_to_timing_flag)
vui->vui_num_ticks_poc_diff_one_minus1 = get_ue_golomb_long(gb);
vui->vui_hrd_parameters_present_flag = get_bits1(gb);
if (vui->vui_hrd_parameters_present_flag)
decode_hrd(gb, 1, &sps->hdr, sps->max_sub_layers);
}
vui->bitstream_restriction_flag = get_bits1(gb);
if (vui->bitstream_restriction_flag) {
if (get_bits_left(gb) < 8 && !alt) {
av_log(avctx, AV_LOG_WARNING,
"Strange VUI bitstream restriction information, retrying"
" from timing information...\n");
memcpy(vui, &backup_vui, sizeof(backup_vui));
memcpy(gb, &backup, sizeof(backup));
alt = 1;
goto timing_info;
}
vui->tiles_fixed_structure_flag = get_bits1(gb);
vui->motion_vectors_over_pic_boundaries_flag = get_bits1(gb);
vui->restricted_ref_pic_lists_flag = get_bits1(gb);
vui->min_spatial_segmentation_idc = get_ue_golomb_long(gb);
vui->max_bytes_per_pic_denom = get_ue_golomb_long(gb);
vui->max_bits_per_min_cu_denom = get_ue_golomb_long(gb);
vui->log2_max_mv_length_horizontal = get_ue_golomb_long(gb);
vui->log2_max_mv_length_vertical = get_ue_golomb_long(gb);
}
if (get_bits_left(gb) < 1 && !alt) {
// XXX: Alternate syntax when sps_range_extension_flag != 0?
av_log(avctx, AV_LOG_WARNING,
"Overread in VUI, retrying from timing information...\n");
memcpy(vui, &backup_vui, sizeof(backup_vui));
memcpy(gb, &backup, sizeof(backup));
alt = 1;
goto timing_info;
}
}
static void set_default_scaling_list_data(ScalingList *sl)
{
int matrixId;
for (matrixId = 0; matrixId < 6; matrixId++) {
// 4x4 default is 16
memset(sl->sl[0][matrixId], 16, 16);
sl->sl_dc[0][matrixId] = 16; // default for 16x16
sl->sl_dc[1][matrixId] = 16; // default for 32x32
}
memcpy(sl->sl[1][0], default_scaling_list_intra, 64);
memcpy(sl->sl[1][1], default_scaling_list_intra, 64);
memcpy(sl->sl[1][2], default_scaling_list_intra, 64);
memcpy(sl->sl[1][3], default_scaling_list_inter, 64);
memcpy(sl->sl[1][4], default_scaling_list_inter, 64);
memcpy(sl->sl[1][5], default_scaling_list_inter, 64);
memcpy(sl->sl[2][0], default_scaling_list_intra, 64);
memcpy(sl->sl[2][1], default_scaling_list_intra, 64);
memcpy(sl->sl[2][2], default_scaling_list_intra, 64);
memcpy(sl->sl[2][3], default_scaling_list_inter, 64);
memcpy(sl->sl[2][4], default_scaling_list_inter, 64);
memcpy(sl->sl[2][5], default_scaling_list_inter, 64);
memcpy(sl->sl[3][0], default_scaling_list_intra, 64);
memcpy(sl->sl[3][1], default_scaling_list_intra, 64);
memcpy(sl->sl[3][2], default_scaling_list_intra, 64);
memcpy(sl->sl[3][3], default_scaling_list_inter, 64);
memcpy(sl->sl[3][4], default_scaling_list_inter, 64);
memcpy(sl->sl[3][5], default_scaling_list_inter, 64);
}
static int scaling_list_data(GetBitContext *gb, AVCodecContext *avctx,
ScalingList *sl, const HEVCSPS *sps)
{
uint8_t scaling_list_pred_mode_flag;
uint8_t scaling_list_dc_coef[2][6];
int size_id, matrix_id, pos;
int i;
for (size_id = 0; size_id < 4; size_id++)
for (matrix_id = 0; matrix_id < 6; matrix_id += ((size_id == 3) ? 3 : 1)) {
scaling_list_pred_mode_flag = get_bits1(gb);
if (!scaling_list_pred_mode_flag) {
unsigned int delta = get_ue_golomb_long(gb);
/* Only need to handle non-zero delta. Zero means default,
* which should already be in the arrays. */
if (delta) {
// Copy from previous array.
delta *= (size_id == 3) ? 3 : 1;
if (matrix_id < delta) {
av_log(avctx, AV_LOG_ERROR,
"Invalid delta in scaling list data: %d.\n", delta);
return AVERROR_INVALIDDATA;
}
memcpy(sl->sl[size_id][matrix_id],
sl->sl[size_id][matrix_id - delta],
size_id > 0 ? 64 : 16);
if (size_id > 1)
sl->sl_dc[size_id - 2][matrix_id] = sl->sl_dc[size_id - 2][matrix_id - delta];
}
} else {
int next_coef, coef_num;
int32_t scaling_list_delta_coef;
next_coef = 8;
coef_num = FFMIN(64, 1 << (4 + (size_id << 1)));
if (size_id > 1) {
int scaling_list_coeff_minus8 = get_se_golomb(gb);
if (scaling_list_coeff_minus8 < -7 ||
scaling_list_coeff_minus8 > 247)
return AVERROR_INVALIDDATA;
scaling_list_dc_coef[size_id - 2][matrix_id] = scaling_list_coeff_minus8 + 8;
next_coef = scaling_list_dc_coef[size_id - 2][matrix_id];
sl->sl_dc[size_id - 2][matrix_id] = next_coef;
}
for (i = 0; i < coef_num; i++) {
if (size_id == 0)
pos = 4 * ff_hevc_diag_scan4x4_y[i] +
ff_hevc_diag_scan4x4_x[i];
else
pos = 8 * ff_hevc_diag_scan8x8_y[i] +
ff_hevc_diag_scan8x8_x[i];
scaling_list_delta_coef = get_se_golomb(gb);
next_coef = (next_coef + 256U + scaling_list_delta_coef) % 256;
sl->sl[size_id][matrix_id][pos] = next_coef;
}
}
}
if (sps->chroma_format_idc == 3) {
for (i = 0; i < 64; i++) {
sl->sl[3][1][i] = sl->sl[2][1][i];
sl->sl[3][2][i] = sl->sl[2][2][i];
sl->sl[3][4][i] = sl->sl[2][4][i];
sl->sl[3][5][i] = sl->sl[2][5][i];
}
sl->sl_dc[1][1] = sl->sl_dc[0][1];
sl->sl_dc[1][2] = sl->sl_dc[0][2];
sl->sl_dc[1][4] = sl->sl_dc[0][4];
sl->sl_dc[1][5] = sl->sl_dc[0][5];
}
return 0;
}
static int map_pixel_format(AVCodecContext *avctx, HEVCSPS *sps)
{
const AVPixFmtDescriptor *desc;
switch (sps->bit_depth) {
case 8:
if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY8;
if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P;
if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P;
if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P;
break;
case 9:
if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY9;
if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P9;
if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P9;
if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P9;
break;
case 10:
if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY10;
if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P10;
if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P10;
if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P10;
break;
case 12:
if (sps->chroma_format_idc == 0) sps->pix_fmt = AV_PIX_FMT_GRAY12;
if (sps->chroma_format_idc == 1) sps->pix_fmt = AV_PIX_FMT_YUV420P12;
if (sps->chroma_format_idc == 2) sps->pix_fmt = AV_PIX_FMT_YUV422P12;
if (sps->chroma_format_idc == 3) sps->pix_fmt = AV_PIX_FMT_YUV444P12;
break;
default:
av_log(avctx, AV_LOG_ERROR,
"The following bit-depths are currently specified: 8, 9, 10 and 12 bits, "
"chroma_format_idc is %d, depth is %d\n",
sps->chroma_format_idc, sps->bit_depth);
return AVERROR_INVALIDDATA;
}
desc = av_pix_fmt_desc_get(sps->pix_fmt);
if (!desc)
return AVERROR(EINVAL);
sps->hshift[0] = sps->vshift[0] = 0;
sps->hshift[2] = sps->hshift[1] = desc->log2_chroma_w;
sps->vshift[2] = sps->vshift[1] = desc->log2_chroma_h;
sps->pixel_shift = sps->bit_depth > 8;
return 0;
}
int ff_hevc_parse_sps(HEVCSPS *sps, GetBitContext *gb, unsigned int *sps_id,
int apply_defdispwin, const HEVCVPS * const *vps_list,
AVCodecContext *avctx)
{
HEVCWindow *ow;
int ret = 0;
int bit_depth_chroma, start, num_comps;
int i;
// Coded parameters
sps->vps_id = get_bits(gb, 4);
if (vps_list && !vps_list[sps->vps_id]) {
av_log(avctx, AV_LOG_ERROR, "VPS %d does not exist\n",
sps->vps_id);
return AVERROR_INVALIDDATA;
}
sps->max_sub_layers = get_bits(gb, 3) + 1;
if (sps->max_sub_layers > HEVC_MAX_SUB_LAYERS) {
av_log(avctx, AV_LOG_ERROR, "sps_max_sub_layers out of range: %d\n",
sps->max_sub_layers);
return AVERROR_INVALIDDATA;
}
sps->temporal_id_nesting_flag = get_bits(gb, 1);
if ((ret = parse_ptl(gb, avctx, &sps->ptl, sps->max_sub_layers)) < 0)
return ret;
*sps_id = get_ue_golomb_long(gb);
if (*sps_id >= HEVC_MAX_SPS_COUNT) {
av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", *sps_id);
return AVERROR_INVALIDDATA;
}
sps->chroma_format_idc = get_ue_golomb_long(gb);
if (sps->chroma_format_idc > 3U) {
av_log(avctx, AV_LOG_ERROR, "chroma_format_idc %d is invalid\n", sps->chroma_format_idc);
return AVERROR_INVALIDDATA;
}
if (sps->chroma_format_idc == 3)
sps->separate_colour_plane_flag = get_bits1(gb);
if (sps->separate_colour_plane_flag)
sps->chroma_format_idc = 0;
sps->width = get_ue_golomb_long(gb);
sps->height = get_ue_golomb_long(gb);
if ((ret = av_image_check_size(sps->width,
sps->height, 0, avctx)) < 0)
return ret;
sps->conformance_window_flag = get_bits1(gb);
if (sps->conformance_window_flag) {
int vert_mult = hevc_sub_height_c[sps->chroma_format_idc];
int horiz_mult = hevc_sub_width_c[sps->chroma_format_idc];
sps->pic_conf_win.left_offset = get_ue_golomb_long(gb) * horiz_mult;
sps->pic_conf_win.right_offset = get_ue_golomb_long(gb) * horiz_mult;
sps->pic_conf_win.top_offset = get_ue_golomb_long(gb) * vert_mult;
sps->pic_conf_win.bottom_offset = get_ue_golomb_long(gb) * vert_mult;
if (avctx->flags2 & AV_CODEC_FLAG2_IGNORE_CROP) {
av_log(avctx, AV_LOG_DEBUG,
"discarding sps conformance window, "
"original values are l:%u r:%u t:%u b:%u\n",
sps->pic_conf_win.left_offset,
sps->pic_conf_win.right_offset,
sps->pic_conf_win.top_offset,
sps->pic_conf_win.bottom_offset);
sps->pic_conf_win.left_offset =
sps->pic_conf_win.right_offset =
sps->pic_conf_win.top_offset =
sps->pic_conf_win.bottom_offset = 0;
}
sps->output_window = sps->pic_conf_win;
}
sps->bit_depth = get_ue_golomb_31(gb) + 8;
if (sps->bit_depth > 16) {
av_log(avctx, AV_LOG_ERROR, "Luma bit depth (%d) is out of range\n",
sps->bit_depth);
return AVERROR_INVALIDDATA;
}
bit_depth_chroma = get_ue_golomb_31(gb) + 8;
if (bit_depth_chroma > 16) {
av_log(avctx, AV_LOG_ERROR, "Chroma bit depth (%d) is out of range\n",
bit_depth_chroma);
return AVERROR_INVALIDDATA;
}
if (sps->chroma_format_idc && bit_depth_chroma != sps->bit_depth) {
av_log(avctx, AV_LOG_ERROR,
"Luma bit depth (%d) is different from chroma bit depth (%d), "
"this is unsupported.\n",
sps->bit_depth, bit_depth_chroma);
return AVERROR_INVALIDDATA;
}
sps->bit_depth_chroma = bit_depth_chroma;
ret = map_pixel_format(avctx, sps);
if (ret < 0)
return ret;
sps->log2_max_poc_lsb = get_ue_golomb_long(gb) + 4;
if (sps->log2_max_poc_lsb > 16) {
av_log(avctx, AV_LOG_ERROR, "log2_max_pic_order_cnt_lsb_minus4 out range: %d\n",
sps->log2_max_poc_lsb - 4);
return AVERROR_INVALIDDATA;
}
sps->sublayer_ordering_info_flag = get_bits1(gb);
start = sps->sublayer_ordering_info_flag ? 0 : sps->max_sub_layers - 1;
for (i = start; i < sps->max_sub_layers; i++) {
sps->temporal_layer[i].max_dec_pic_buffering = get_ue_golomb_long(gb) + 1;
sps->temporal_layer[i].num_reorder_pics = get_ue_golomb_long(gb);
sps->temporal_layer[i].max_latency_increase = get_ue_golomb_long(gb) - 1;
if (sps->temporal_layer[i].max_dec_pic_buffering > (unsigned)HEVC_MAX_DPB_SIZE) {
av_log(avctx, AV_LOG_ERROR, "sps_max_dec_pic_buffering_minus1 out of range: %d\n",
sps->temporal_layer[i].max_dec_pic_buffering - 1U);
return AVERROR_INVALIDDATA;
}
if (sps->temporal_layer[i].num_reorder_pics > sps->temporal_layer[i].max_dec_pic_buffering - 1) {
av_log(avctx, AV_LOG_WARNING, "sps_max_num_reorder_pics out of range: %d\n",
sps->temporal_layer[i].num_reorder_pics);
if (avctx->err_recognition & AV_EF_EXPLODE ||
sps->temporal_layer[i].num_reorder_pics > HEVC_MAX_DPB_SIZE - 1) {
return AVERROR_INVALIDDATA;
}
sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[i].num_reorder_pics + 1;
}
}
if (!sps->sublayer_ordering_info_flag) {
for (i = 0; i < start; i++) {
sps->temporal_layer[i].max_dec_pic_buffering = sps->temporal_layer[start].max_dec_pic_buffering;
sps->temporal_layer[i].num_reorder_pics = sps->temporal_layer[start].num_reorder_pics;
sps->temporal_layer[i].max_latency_increase = sps->temporal_layer[start].max_latency_increase;
}
}
sps->log2_min_cb_size = get_ue_golomb_long(gb) + 3;
sps->log2_diff_max_min_coding_block_size = get_ue_golomb_long(gb);
sps->log2_min_tb_size = get_ue_golomb_long(gb) + 2;
sps->log2_diff_max_min_transform_block_size = get_ue_golomb_long(gb);
sps->log2_max_trafo_size = sps->log2_diff_max_min_transform_block_size +
sps->log2_min_tb_size;
if (sps->log2_min_cb_size < 3 || sps->log2_min_cb_size > 30) {
av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_min_cb_size", sps->log2_min_cb_size);
return AVERROR_INVALIDDATA;
}
if (sps->log2_diff_max_min_coding_block_size > 30) {
av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_coding_block_size", sps->log2_diff_max_min_coding_block_size);
return AVERROR_INVALIDDATA;
}
if (sps->log2_min_tb_size >= sps->log2_min_cb_size || sps->log2_min_tb_size < 2) {
av_log(avctx, AV_LOG_ERROR, "Invalid value for log2_min_tb_size");
return AVERROR_INVALIDDATA;
}
if (sps->log2_diff_max_min_transform_block_size > 30) {
av_log(avctx, AV_LOG_ERROR, "Invalid value %d for log2_diff_max_min_transform_block_size",
sps->log2_diff_max_min_transform_block_size);
return AVERROR_INVALIDDATA;
}
sps->max_transform_hierarchy_depth_inter = get_ue_golomb_long(gb);
sps->max_transform_hierarchy_depth_intra = get_ue_golomb_long(gb);
sps->scaling_list_enable_flag = get_bits1(gb);
if (sps->scaling_list_enable_flag) {
set_default_scaling_list_data(&sps->scaling_list);
if (get_bits1(gb)) {
ret = scaling_list_data(gb, avctx, &sps->scaling_list, sps);
if (ret < 0)
return ret;
}
}
sps->amp_enabled_flag = get_bits1(gb);
sps->sao_enabled = get_bits1(gb);
sps->pcm_enabled_flag = get_bits1(gb);
if (sps->pcm_enabled_flag) {
sps->pcm.bit_depth = get_bits(gb, 4) + 1;
sps->pcm.bit_depth_chroma = get_bits(gb, 4) + 1;
sps->pcm.log2_min_pcm_cb_size = get_ue_golomb_long(gb) + 3;
sps->pcm.log2_max_pcm_cb_size = sps->pcm.log2_min_pcm_cb_size +
get_ue_golomb_long(gb);
if (FFMAX(sps->pcm.bit_depth, sps->pcm.bit_depth_chroma) > sps->bit_depth) {
av_log(avctx, AV_LOG_ERROR,
"PCM bit depth (%d, %d) is greater than normal bit depth (%d)\n",
sps->pcm.bit_depth, sps->pcm.bit_depth_chroma, sps->bit_depth);
return AVERROR_INVALIDDATA;
}
sps->pcm.loop_filter_disable_flag = get_bits1(gb);
}
sps->nb_st_rps = get_ue_golomb_long(gb);
if (sps->nb_st_rps > HEVC_MAX_SHORT_TERM_REF_PIC_SETS) {
av_log(avctx, AV_LOG_ERROR, "Too many short term RPS: %d.\n",
sps->nb_st_rps);
return AVERROR_INVALIDDATA;
}
for (i = 0; i < sps->nb_st_rps; i++) {
if ((ret = ff_hevc_decode_short_term_rps(gb, avctx, &sps->st_rps[i],
sps, 0)) < 0)
return ret;
}
sps->long_term_ref_pics_present_flag = get_bits1(gb);
if (sps->long_term_ref_pics_present_flag) {
sps->num_long_term_ref_pics_sps = get_ue_golomb_long(gb);
if (sps->num_long_term_ref_pics_sps > HEVC_MAX_LONG_TERM_REF_PICS) {
av_log(avctx, AV_LOG_ERROR, "Too many long term ref pics: %d.\n",
sps->num_long_term_ref_pics_sps);
return AVERROR_INVALIDDATA;
}
for (i = 0; i < sps->num_long_term_ref_pics_sps; i++) {
sps->lt_ref_pic_poc_lsb_sps[i] = get_bits(gb, sps->log2_max_poc_lsb);
sps->used_by_curr_pic_lt_sps_flag[i] = get_bits1(gb);
}
}
sps->sps_temporal_mvp_enabled_flag = get_bits1(gb);
sps->sps_strong_intra_smoothing_enable_flag = get_bits1(gb);
sps->vui.common.sar = (AVRational){0, 1};
sps->vui_present = get_bits1(gb);
if (sps->vui_present)
decode_vui(gb, avctx, apply_defdispwin, sps);
sps->sps_extension_present_flag = get_bits1(gb);
if (sps->sps_extension_present_flag) {
sps->sps_range_extension_flag = get_bits1(gb);
sps->sps_multilayer_extension_flag = get_bits1(gb);
sps->sps_3d_extension_flag = get_bits1(gb);
sps->sps_scc_extension_flag = get_bits1(gb);
skip_bits(gb, 4); // sps_extension_4bits
if (sps->sps_range_extension_flag) {
sps->transform_skip_rotation_enabled_flag = get_bits1(gb);
sps->transform_skip_context_enabled_flag = get_bits1(gb);
sps->implicit_rdpcm_enabled_flag = get_bits1(gb);
sps->explicit_rdpcm_enabled_flag = get_bits1(gb);
sps->extended_precision_processing_flag = get_bits1(gb);
if (sps->extended_precision_processing_flag)
av_log(avctx, AV_LOG_WARNING,
"extended_precision_processing_flag not yet implemented\n");
sps->intra_smoothing_disabled_flag = get_bits1(gb);
sps->high_precision_offsets_enabled_flag = get_bits1(gb);
if (sps->high_precision_offsets_enabled_flag)
av_log(avctx, AV_LOG_WARNING,
"high_precision_offsets_enabled_flag not yet implemented\n");
sps->persistent_rice_adaptation_enabled_flag = get_bits1(gb);
sps->cabac_bypass_alignment_enabled_flag = get_bits1(gb);
if (sps->cabac_bypass_alignment_enabled_flag)
av_log(avctx, AV_LOG_WARNING,
"cabac_bypass_alignment_enabled_flag not yet implemented\n");
}
if (sps->sps_multilayer_extension_flag) {
skip_bits1(gb); // inter_view_mv_vert_constraint_flag
av_log(avctx, AV_LOG_WARNING,
"sps_multilayer_extension_flag not yet implemented\n");
}
if (sps->sps_3d_extension_flag) {
for (i = 0; i <= 1; i++) {
skip_bits1(gb); // iv_di_mc_enabled_flag
skip_bits1(gb); // iv_mv_scal_enabled_flag
if (i == 0) {
get_ue_golomb_long(gb); // log2_ivmc_sub_pb_size_minus3
skip_bits1(gb); // iv_res_pred_enabled_flag
skip_bits1(gb); // depth_ref_enabled_flag
skip_bits1(gb); // vsp_mc_enabled_flag
skip_bits1(gb); // dbbp_enabled_flag
} else {
skip_bits1(gb); // tex_mc_enabled_flag
get_ue_golomb_long(gb); // log2_ivmc_sub_pb_size_minus3
skip_bits1(gb); // intra_contour_enabled_flag
skip_bits1(gb); // intra_dc_only_wedge_enabled_flag
skip_bits1(gb); // cqt_cu_part_pred_enabled_flag
skip_bits1(gb); // inter_dc_only_enabled_flag
skip_bits1(gb); // skip_intra_enabled_flag
}
}
av_log(avctx, AV_LOG_WARNING,
"sps_3d_extension_flag not yet implemented\n");
}
if (sps->sps_scc_extension_flag) {
sps->sps_curr_pic_ref_enabled_flag = get_bits1(gb);
sps->palette_mode_enabled_flag = get_bits1(gb);
if (sps->palette_mode_enabled_flag) {
sps->palette_max_size = get_ue_golomb(gb);
sps->delta_palette_max_predictor_size = get_ue_golomb(gb);
sps->sps_palette_predictor_initializers_present_flag = get_bits1(gb);
if (sps->sps_palette_predictor_initializers_present_flag) {
sps->sps_num_palette_predictor_initializers = get_ue_golomb(gb) + 1;
if (sps->sps_num_palette_predictor_initializers > HEVC_MAX_PALETTE_PREDICTOR_SIZE) {
av_log(avctx, AV_LOG_ERROR,
"sps_num_palette_predictor_initializers out of range: %u\n",
sps->sps_num_palette_predictor_initializers);
return AVERROR_INVALIDDATA;
}
num_comps = !sps->chroma_format_idc ? 1 : 3;
for (int comp = 0; comp < num_comps; comp++) {
int bit_depth = !comp ? sps->bit_depth : sps->bit_depth_chroma;
for (i = 0; i < sps->sps_num_palette_predictor_initializers; i++)
sps->sps_palette_predictor_initializer[comp][i] = get_bits(gb, bit_depth);
}
}
}
sps->motion_vector_resolution_control_idc = get_bits(gb, 2);
sps->intra_boundary_filtering_disabled_flag = get_bits1(gb);
}
}
if (apply_defdispwin) {
sps->output_window.left_offset += sps->vui.def_disp_win.left_offset;
sps->output_window.right_offset += sps->vui.def_disp_win.right_offset;
sps->output_window.top_offset += sps->vui.def_disp_win.top_offset;
sps->output_window.bottom_offset += sps->vui.def_disp_win.bottom_offset;
}
ow = &sps->output_window;
if (ow->left_offset >= INT_MAX - ow->right_offset ||
ow->top_offset >= INT_MAX - ow->bottom_offset ||
ow->left_offset + ow->right_offset >= sps->width ||
ow->top_offset + ow->bottom_offset >= sps->height) {
av_log(avctx, AV_LOG_WARNING, "Invalid cropping offsets: %u/%u/%u/%u\n",
ow->left_offset, ow->right_offset, ow->top_offset, ow->bottom_offset);
if (avctx->err_recognition & AV_EF_EXPLODE) {
return AVERROR_INVALIDDATA;
}
av_log(avctx, AV_LOG_WARNING,
"Displaying the whole video surface.\n");
memset(ow, 0, sizeof(*ow));
memset(&sps->pic_conf_win, 0, sizeof(sps->pic_conf_win));
}
// Inferred parameters
sps->log2_ctb_size = sps->log2_min_cb_size +
sps->log2_diff_max_min_coding_block_size;
sps->log2_min_pu_size = sps->log2_min_cb_size - 1;
if (sps->log2_ctb_size > HEVC_MAX_LOG2_CTB_SIZE) {
av_log(avctx, AV_LOG_ERROR, "CTB size out of range: 2^%d\n", sps->log2_ctb_size);
return AVERROR_INVALIDDATA;
}
if (sps->log2_ctb_size < 4) {
av_log(avctx,
AV_LOG_ERROR,
"log2_ctb_size %d differs from the bounds of any known profile\n",
sps->log2_ctb_size);
avpriv_request_sample(avctx, "log2_ctb_size %d", sps->log2_ctb_size);
return AVERROR_INVALIDDATA;
}
sps->ctb_width = (sps->width + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
sps->ctb_height = (sps->height + (1 << sps->log2_ctb_size) - 1) >> sps->log2_ctb_size;
sps->ctb_size = sps->ctb_width * sps->ctb_height;
sps->min_cb_width = sps->width >> sps->log2_min_cb_size;
sps->min_cb_height = sps->height >> sps->log2_min_cb_size;
sps->min_tb_width = sps->width >> sps->log2_min_tb_size;
sps->min_tb_height = sps->height >> sps->log2_min_tb_size;
sps->min_pu_width = sps->width >> sps->log2_min_pu_size;
sps->min_pu_height = sps->height >> sps->log2_min_pu_size;
sps->tb_mask = (1 << (sps->log2_ctb_size - sps->log2_min_tb_size)) - 1;
sps->qp_bd_offset = 6 * (sps->bit_depth - 8);
if (av_mod_uintp2(sps->width, sps->log2_min_cb_size) ||
av_mod_uintp2(sps->height, sps->log2_min_cb_size)) {
av_log(avctx, AV_LOG_ERROR, "Invalid coded frame dimensions.\n");
return AVERROR_INVALIDDATA;
}
if (sps->max_transform_hierarchy_depth_inter > sps->log2_ctb_size - sps->log2_min_tb_size) {
av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_inter out of range: %d\n",
sps->max_transform_hierarchy_depth_inter);
return AVERROR_INVALIDDATA;
}
if (sps->max_transform_hierarchy_depth_intra > sps->log2_ctb_size - sps->log2_min_tb_size) {
av_log(avctx, AV_LOG_ERROR, "max_transform_hierarchy_depth_intra out of range: %d\n",
sps->max_transform_hierarchy_depth_intra);
return AVERROR_INVALIDDATA;
}
if (sps->log2_max_trafo_size > FFMIN(sps->log2_ctb_size, 5)) {
av_log(avctx, AV_LOG_ERROR,
"max transform block size out of range: %d\n",
sps->log2_max_trafo_size);
return AVERROR_INVALIDDATA;
}
if (get_bits_left(gb) < 0) {
av_log(avctx, AV_LOG_ERROR,
"Overread SPS by %d bits\n", -get_bits_left(gb));
return AVERROR_INVALIDDATA;
}
return 0;
}
static void hevc_sps_free(FFRefStructOpaque opaque, void *obj)
{
HEVCSPS *sps = obj;
av_freep(&sps->data);
}
static int compare_sps(const HEVCSPS *sps1, const HEVCSPS *sps2)
{
return sps1->data_size == sps2->data_size &&
!memcmp(sps1->data, sps2->data, sps1->data_size);
}
int ff_hevc_decode_nal_sps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps, int apply_defdispwin)
{
HEVCSPS *sps = ff_refstruct_alloc_ext(sizeof(*sps), 0, NULL, hevc_sps_free);
unsigned int sps_id;
int ret;
if (!sps)
return AVERROR(ENOMEM);
av_log(avctx, AV_LOG_DEBUG, "Decoding SPS\n");
sps->data_size = gb->buffer_end - gb->buffer;
sps->data = av_memdup(gb->buffer, sps->data_size);
if (!sps->data) {
ret = AVERROR(ENOMEM);
goto err;
}
ret = ff_hevc_parse_sps(sps, gb, &sps_id,
apply_defdispwin,
ps->vps_list, avctx);
if (ret < 0)
goto err;
if (avctx->debug & FF_DEBUG_BITSTREAM) {
av_log(avctx, AV_LOG_DEBUG,
"Parsed SPS: id %d; coded wxh: %dx%d; "
"cropped wxh: %dx%d; pix_fmt: %s.\n",
sps_id, sps->width, sps->height,
sps->width - (sps->output_window.left_offset + sps->output_window.right_offset),
sps->height - (sps->output_window.top_offset + sps->output_window.bottom_offset),
av_get_pix_fmt_name(sps->pix_fmt));
}
/* check if this is a repeat of an already parsed SPS, then keep the
* original one.
* otherwise drop all PPSes that depend on it */
if (ps->sps_list[sps_id] &&
compare_sps(ps->sps_list[sps_id], sps)) {
ff_refstruct_unref(&sps);
} else {
remove_sps(ps, sps_id);
ps->sps_list[sps_id] = sps;
}
return 0;
err:
ff_refstruct_unref(&sps);
return ret;
}
static void hevc_pps_free(FFRefStructOpaque unused, void *obj)
{
HEVCPPS *pps = obj;
av_freep(&pps->column_width);
av_freep(&pps->row_height);
av_freep(&pps->col_bd);
av_freep(&pps->row_bd);
av_freep(&pps->col_idxX);
av_freep(&pps->ctb_addr_rs_to_ts);
av_freep(&pps->ctb_addr_ts_to_rs);
av_freep(&pps->tile_pos_rs);
av_freep(&pps->tile_id);
av_freep(&pps->min_tb_addr_zs_tab);
av_freep(&pps->data);
}
static void colour_mapping_octants(GetBitContext *gb, HEVCPPS *pps, int inp_depth,
int idx_y, int idx_cb, int idx_cr, int inp_length)
{
unsigned int split_octant_flag, part_num_y, coded_res_flag, res_coeff_q, res_coeff_r;
int cm_res_bits;
part_num_y = 1 << pps->cm_y_part_num_log2;
split_octant_flag = inp_depth < pps->cm_octant_depth ? get_bits1(gb) : 0;
if (split_octant_flag)
for (int k = 0; k < 2; k++)
for (int m = 0; m < 2; m++)
for (int n = 0; n < 2; n++)
colour_mapping_octants(gb, pps, inp_depth + 1,
idx_y + part_num_y * k * inp_length / 2,
idx_cb + m * inp_length / 2,
idx_cr + n * inp_length / 2,
inp_length / 2);
else
for (int i = 0; i < part_num_y; i++) {
for (int j = 0; j < 4; j++) {
coded_res_flag = get_bits1(gb);
if (coded_res_flag)
for (int c = 0; c < 3; c++) {
res_coeff_q = get_ue_golomb_long(gb);
cm_res_bits = FFMAX(0, 10 + pps->luma_bit_depth_cm_input -
pps->luma_bit_depth_cm_output -
pps->cm_res_quant_bits - pps->cm_delta_flc_bits);
res_coeff_r = cm_res_bits ? get_bits(gb, cm_res_bits) : 0;
if (res_coeff_q || res_coeff_r)
skip_bits1(gb);
}
}
}
}
static int colour_mapping_table(GetBitContext *gb, AVCodecContext *avctx, HEVCPPS *pps)
{
pps->num_cm_ref_layers = get_ue_golomb(gb) + 1;
if (pps->num_cm_ref_layers > 62) {
av_log(avctx, AV_LOG_ERROR,
"num_cm_ref_layers_minus1 shall be in the range [0, 61].\n");
return AVERROR_INVALIDDATA;
}
for (int i = 0; i < pps->num_cm_ref_layers; i++)
pps->cm_ref_layer_id[i] = get_bits(gb, 6);
pps->cm_octant_depth = get_bits(gb, 2);
pps->cm_y_part_num_log2 = get_bits(gb, 2);
pps->luma_bit_depth_cm_input = get_ue_golomb(gb) + 8;
pps->chroma_bit_depth_cm_input = get_ue_golomb(gb) + 8;
pps->luma_bit_depth_cm_output = get_ue_golomb(gb) + 8;
pps->chroma_bit_depth_cm_output = get_ue_golomb(gb) + 8;
pps->cm_res_quant_bits = get_bits(gb, 2);
pps->cm_delta_flc_bits = get_bits(gb, 2) + 1;
if (pps->cm_octant_depth == 1) {
pps->cm_adapt_threshold_u_delta = get_se_golomb_long(gb);
pps->cm_adapt_threshold_v_delta = get_se_golomb_long(gb);
}
colour_mapping_octants(gb, pps, 0, 0, 0, 0, 1 << pps->cm_octant_depth);
return 0;
}
static int pps_multilayer_extension(GetBitContext *gb, AVCodecContext *avctx,
HEVCPPS *pps, const HEVCSPS *sps, const HEVCVPS *vps)
{
pps->poc_reset_info_present_flag = get_bits1(gb);
pps->pps_infer_scaling_list_flag = get_bits1(gb);
if (pps->pps_infer_scaling_list_flag)
pps->pps_scaling_list_ref_layer_id = get_bits(gb, 6);
pps->num_ref_loc_offsets = get_ue_golomb(gb);
if (pps->num_ref_loc_offsets > vps->vps_max_layers - 1)
return AVERROR_INVALIDDATA;
for (int i = 0; i < pps->num_ref_loc_offsets; i++) {
pps->ref_loc_offset_layer_id[i] = get_bits(gb, 6);
pps->scaled_ref_layer_offset_present_flag[i] = get_bits1(gb);
if (pps->scaled_ref_layer_offset_present_flag[i]) {
pps->scaled_ref_layer_left_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->scaled_ref_layer_top_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->scaled_ref_layer_right_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->scaled_ref_layer_bottom_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
}
pps->ref_region_offset_present_flag[i] = get_bits1(gb);
if (pps->ref_region_offset_present_flag[i]) {
pps->ref_region_left_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->ref_region_top_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->ref_region_right_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
pps->ref_region_bottom_offset[pps->ref_loc_offset_layer_id[i]] = get_se_golomb_long(gb);
}
pps->resample_phase_set_present_flag[i] = get_bits1(gb);
if (pps->resample_phase_set_present_flag[i]) {
pps->phase_hor_luma[pps->ref_loc_offset_layer_id[i]] = get_ue_golomb_31(gb);
pps->phase_ver_luma[pps->ref_loc_offset_layer_id[i]] = get_ue_golomb_31(gb);
pps->phase_hor_chroma[pps->ref_loc_offset_layer_id[i]] = get_ue_golomb(gb) - 8;
pps->phase_ver_chroma[pps->ref_loc_offset_layer_id[i]] = get_ue_golomb(gb) - 8;
}
}
pps->colour_mapping_enabled_flag = get_bits1(gb);
if (pps->colour_mapping_enabled_flag) {
int ret = colour_mapping_table(gb, avctx, pps);
if (ret < 0)
return ret;
}
return 0;
}
static void delta_dlt(GetBitContext *gb, HEVCPPS *pps)
{
unsigned int num_val_delta_dlt, max_diff = 0;
int min_diff_minus1 = -1;
unsigned int len;
num_val_delta_dlt = get_bits(gb, pps->pps_bit_depth_for_depth_layers_minus8 + 8);
if (num_val_delta_dlt) {
if (num_val_delta_dlt > 1)
max_diff = get_bits(gb, pps->pps_bit_depth_for_depth_layers_minus8 + 8);
if (num_val_delta_dlt > 2 && max_diff) {
len = av_log2(max_diff) + 1;
min_diff_minus1 = get_bits(gb, len);
}
if (max_diff > (min_diff_minus1 + 1))
for (int k = 1; k < num_val_delta_dlt; k++) {
len = av_log2(max_diff - (min_diff_minus1 + 1)) + 1;
skip_bits(gb, len); // delta_val_diff_minus_min
}
}
}
static int pps_3d_extension(GetBitContext *gb, AVCodecContext *avctx,
HEVCPPS *pps, const HEVCSPS *sps)
{
unsigned int pps_depth_layers_minus1;
if (get_bits1(gb)) { // dlts_present_flag
pps_depth_layers_minus1 = get_bits(gb, 6);
pps->pps_bit_depth_for_depth_layers_minus8 = get_bits(gb, 4);
for (int i = 0; i <= pps_depth_layers_minus1; i++) {
if (get_bits1(gb)) { // dlt_flag[i]
if (!get_bits1(gb)) { // dlt_pred_flag[i]
if (get_bits1(gb)) { // dlt_val_flags_present_flag[i]
for (int j = 0; j <= ((1 << (pps->pps_bit_depth_for_depth_layers_minus8 + 8)) - 1); j++)
skip_bits1(gb); // dlt_value_flag[i][j]
} else
delta_dlt(gb, pps);
}
}
}
}
return 0;
}
static int pps_range_extensions(GetBitContext *gb, AVCodecContext *avctx,
HEVCPPS *pps, const HEVCSPS *sps)
{
if (pps->transform_skip_enabled_flag) {
pps->log2_max_transform_skip_block_size = get_ue_golomb_31(gb) + 2;
}
pps->cross_component_prediction_enabled_flag = get_bits1(gb);
pps->chroma_qp_offset_list_enabled_flag = get_bits1(gb);
if (pps->chroma_qp_offset_list_enabled_flag) {
pps->diff_cu_chroma_qp_offset_depth = get_ue_golomb_31(gb);
pps->chroma_qp_offset_list_len_minus1 = get_ue_golomb_31(gb);
if (pps->chroma_qp_offset_list_len_minus1 > 5) {
av_log(avctx, AV_LOG_ERROR,
"chroma_qp_offset_list_len_minus1 shall be in the range [0, 5].\n");
return AVERROR_INVALIDDATA;
}
for (int i = 0; i <= pps->chroma_qp_offset_list_len_minus1; i++) {
pps->cb_qp_offset_list[i] = get_se_golomb(gb);
if (pps->cb_qp_offset_list[i]) {
av_log(avctx, AV_LOG_WARNING,
"cb_qp_offset_list not tested yet.\n");
}
pps->cr_qp_offset_list[i] = get_se_golomb(gb);
if (pps->cr_qp_offset_list[i]) {
av_log(avctx, AV_LOG_WARNING,
"cb_qp_offset_list not tested yet.\n");
}
}
}
pps->log2_sao_offset_scale_luma = get_ue_golomb_31(gb);
pps->log2_sao_offset_scale_chroma = get_ue_golomb_31(gb);
if ( pps->log2_sao_offset_scale_luma > FFMAX(sps->bit_depth - 10, 0)
|| pps->log2_sao_offset_scale_chroma > FFMAX(sps->bit_depth_chroma - 10, 0)
)
return AVERROR_INVALIDDATA;
return(0);
}
static int pps_scc_extension(GetBitContext *gb, AVCodecContext *avctx,
HEVCPPS *pps, const HEVCSPS *sps)
{
int num_comps, ret;
pps->pps_curr_pic_ref_enabled_flag = get_bits1(gb);
if (pps->residual_adaptive_colour_transform_enabled_flag = get_bits1(gb)) {
pps->pps_slice_act_qp_offsets_present_flag = get_bits1(gb);
pps->pps_act_y_qp_offset = get_se_golomb(gb) - 5;
pps->pps_act_cb_qp_offset = get_se_golomb(gb) - 5;
pps->pps_act_cr_qp_offset = get_se_golomb(gb) - 3;
#define CHECK_QP_OFFSET(name) (pps->pps_act_ ## name ## _qp_offset <= -12 || \
pps->pps_act_ ## name ## _qp_offset >= 12)
ret = CHECK_QP_OFFSET(y) || CHECK_QP_OFFSET(cb) || CHECK_QP_OFFSET(cr);
#undef CHECK_QP_OFFSET
if (ret) {
av_log(avctx, AV_LOG_ERROR,
"PpsActQpOffsetY/Cb/Cr shall be in the range of [-12, 12].\n");
return AVERROR_INVALIDDATA;
}
}
if (pps->pps_palette_predictor_initializers_present_flag = get_bits1(gb)) {
pps->pps_num_palette_predictor_initializers = get_ue_golomb(gb);
if (pps->pps_num_palette_predictor_initializers > 0) {
if (pps->pps_num_palette_predictor_initializers > HEVC_MAX_PALETTE_PREDICTOR_SIZE) {
av_log(avctx, AV_LOG_ERROR,
"pps_num_palette_predictor_initializers out of range: %u\n",
pps->pps_num_palette_predictor_initializers);
return AVERROR_INVALIDDATA;
}
pps->monochrome_palette_flag = get_bits1(gb);
pps->luma_bit_depth_entry = get_ue_golomb_31(gb) + 8;
if (pps->luma_bit_depth_entry != sps->bit_depth)
return AVERROR_INVALIDDATA;
if (!pps->monochrome_palette_flag) {
pps->chroma_bit_depth_entry = get_ue_golomb_31(gb) + 8;
if (pps->chroma_bit_depth_entry != sps->bit_depth_chroma)
return AVERROR_INVALIDDATA;
}
num_comps = pps->monochrome_palette_flag ? 1 : 3;
for (int comp = 0; comp < num_comps; comp++) {
int bit_depth = !comp ? pps->luma_bit_depth_entry : pps->chroma_bit_depth_entry;
for (int i = 0; i < pps->pps_num_palette_predictor_initializers; i++)
pps->pps_palette_predictor_initializer[comp][i] = get_bits(gb, bit_depth);
}
}
}
return 0;
}
static inline int setup_pps(AVCodecContext *avctx, GetBitContext *gb,
HEVCPPS *pps, const HEVCSPS *sps)
{
int log2_diff;
int pic_area_in_ctbs;
int i, j, x, y, ctb_addr_rs, tile_id;
// Inferred parameters
pps->col_bd = av_malloc_array(pps->num_tile_columns + 1, sizeof(*pps->col_bd));
pps->row_bd = av_malloc_array(pps->num_tile_rows + 1, sizeof(*pps->row_bd));
pps->col_idxX = av_malloc_array(sps->ctb_width, sizeof(*pps->col_idxX));
if (!pps->col_bd || !pps->row_bd || !pps->col_idxX)
return AVERROR(ENOMEM);
if (pps->uniform_spacing_flag) {
if (!pps->column_width) {
pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
}
if (!pps->column_width || !pps->row_height)
return AVERROR(ENOMEM);
for (i = 0; i < pps->num_tile_columns; i++) {
pps->column_width[i] = ((i + 1) * sps->ctb_width) / pps->num_tile_columns -
(i * sps->ctb_width) / pps->num_tile_columns;
}
for (i = 0; i < pps->num_tile_rows; i++) {
pps->row_height[i] = ((i + 1) * sps->ctb_height) / pps->num_tile_rows -
(i * sps->ctb_height) / pps->num_tile_rows;
}
}
pps->col_bd[0] = 0;
for (i = 0; i < pps->num_tile_columns; i++)
pps->col_bd[i + 1] = pps->col_bd[i] + pps->column_width[i];
pps->row_bd[0] = 0;
for (i = 0; i < pps->num_tile_rows; i++)
pps->row_bd[i + 1] = pps->row_bd[i] + pps->row_height[i];
for (i = 0, j = 0; i < sps->ctb_width; i++) {
if (i > pps->col_bd[j])
j++;
pps->col_idxX[i] = j;
}
/**
* 6.5
*/
pic_area_in_ctbs = sps->ctb_width * sps->ctb_height;
pps->ctb_addr_rs_to_ts = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_rs_to_ts));
pps->ctb_addr_ts_to_rs = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->ctb_addr_ts_to_rs));
pps->tile_id = av_malloc_array(pic_area_in_ctbs, sizeof(*pps->tile_id));
pps->min_tb_addr_zs_tab = av_malloc_array((sps->tb_mask+2) * (sps->tb_mask+2), sizeof(*pps->min_tb_addr_zs_tab));
if (!pps->ctb_addr_rs_to_ts || !pps->ctb_addr_ts_to_rs ||
!pps->tile_id || !pps->min_tb_addr_zs_tab) {
return AVERROR(ENOMEM);
}
for (ctb_addr_rs = 0; ctb_addr_rs < pic_area_in_ctbs; ctb_addr_rs++) {
int tb_x = ctb_addr_rs % sps->ctb_width;
int tb_y = ctb_addr_rs / sps->ctb_width;
int tile_x = 0;
int tile_y = 0;
int val = 0;
for (i = 0; i < pps->num_tile_columns; i++) {
if (tb_x < pps->col_bd[i + 1]) {
tile_x = i;
break;
}
}
for (i = 0; i < pps->num_tile_rows; i++) {
if (tb_y < pps->row_bd[i + 1]) {
tile_y = i;
break;
}
}
for (i = 0; i < tile_x; i++)
val += pps->row_height[tile_y] * pps->column_width[i];
for (i = 0; i < tile_y; i++)
val += sps->ctb_width * pps->row_height[i];
val += (tb_y - pps->row_bd[tile_y]) * pps->column_width[tile_x] +
tb_x - pps->col_bd[tile_x];
pps->ctb_addr_rs_to_ts[ctb_addr_rs] = val;
pps->ctb_addr_ts_to_rs[val] = ctb_addr_rs;
}
for (j = 0, tile_id = 0; j < pps->num_tile_rows; j++)
for (i = 0; i < pps->num_tile_columns; i++, tile_id++)
for (y = pps->row_bd[j]; y < pps->row_bd[j + 1]; y++)
for (x = pps->col_bd[i]; x < pps->col_bd[i + 1]; x++)
pps->tile_id[pps->ctb_addr_rs_to_ts[y * sps->ctb_width + x]] = tile_id;
pps->tile_pos_rs = av_malloc_array(tile_id, sizeof(*pps->tile_pos_rs));
if (!pps->tile_pos_rs)
return AVERROR(ENOMEM);
for (j = 0; j < pps->num_tile_rows; j++)
for (i = 0; i < pps->num_tile_columns; i++)
pps->tile_pos_rs[j * pps->num_tile_columns + i] =
pps->row_bd[j] * sps->ctb_width + pps->col_bd[i];
log2_diff = sps->log2_ctb_size - sps->log2_min_tb_size;
pps->min_tb_addr_zs = &pps->min_tb_addr_zs_tab[1*(sps->tb_mask+2)+1];
for (y = 0; y < sps->tb_mask+2; y++) {
pps->min_tb_addr_zs_tab[y*(sps->tb_mask+2)] = -1;
pps->min_tb_addr_zs_tab[y] = -1;
}
for (y = 0; y < sps->tb_mask+1; y++) {
for (x = 0; x < sps->tb_mask+1; x++) {
int tb_x = x >> log2_diff;
int tb_y = y >> log2_diff;
int rs = sps->ctb_width * tb_y + tb_x;
int val = pps->ctb_addr_rs_to_ts[rs] << (log2_diff * 2);
for (i = 0; i < log2_diff; i++) {
int m = 1 << i;
val += (m & x ? m * m : 0) + (m & y ? 2 * m * m : 0);
}
pps->min_tb_addr_zs[y * (sps->tb_mask+2) + x] = val;
}
}
return 0;
}
int ff_hevc_decode_nal_pps(GetBitContext *gb, AVCodecContext *avctx,
HEVCParamSets *ps)
{
const HEVCSPS *sps = NULL;
const HEVCVPS *vps = NULL;
int i, ret = 0;
ptrdiff_t nal_size = gb->buffer_end - gb->buffer;
unsigned int pps_id = get_ue_golomb_long(gb);
unsigned log2_parallel_merge_level_minus2;
HEVCPPS *pps;
av_log(avctx, AV_LOG_DEBUG, "Decoding PPS\n");
if (pps_id >= HEVC_MAX_PPS_COUNT) {
av_log(avctx, AV_LOG_ERROR, "PPS id out of range: %d\n", pps_id);
return AVERROR_INVALIDDATA;
}
if (ps->pps_list[pps_id]) {
const HEVCPPS *pps1 = ps->pps_list[pps_id];
if (pps1->data_size == nal_size &&
!memcmp(pps1->data, gb->buffer, pps1->data_size))
return 0;
}
pps = ff_refstruct_alloc_ext(sizeof(*pps), 0, NULL, hevc_pps_free);
if (!pps)
return AVERROR(ENOMEM);
pps->data_size = nal_size;
pps->data = av_memdup(gb->buffer, nal_size);
if (!pps->data) {
ret = AVERROR_INVALIDDATA;
goto err;
}
// Default values
pps->loop_filter_across_tiles_enabled_flag = 1;
pps->num_tile_columns = 1;
pps->num_tile_rows = 1;
pps->uniform_spacing_flag = 1;
pps->disable_dbf = 0;
pps->beta_offset = 0;
pps->tc_offset = 0;
pps->log2_max_transform_skip_block_size = 2;
// Coded parameters
pps->pps_id = pps_id;
pps->sps_id = get_ue_golomb_long(gb);
if (pps->sps_id >= HEVC_MAX_SPS_COUNT) {
av_log(avctx, AV_LOG_ERROR, "SPS id out of range: %d\n", pps->sps_id);
ret = AVERROR_INVALIDDATA;
goto err;
}
if (!ps->sps_list[pps->sps_id]) {
av_log(avctx, AV_LOG_ERROR, "SPS %u does not exist.\n", pps->sps_id);
ret = AVERROR_INVALIDDATA;
goto err;
}
sps = ps->sps_list[pps->sps_id];
vps = ps->vps_list[sps->vps_id];
pps->dependent_slice_segments_enabled_flag = get_bits1(gb);
pps->output_flag_present_flag = get_bits1(gb);
pps->num_extra_slice_header_bits = get_bits(gb, 3);
pps->sign_data_hiding_flag = get_bits1(gb);
pps->cabac_init_present_flag = get_bits1(gb);
pps->num_ref_idx_l0_default_active = get_ue_golomb_31(gb) + 1;
pps->num_ref_idx_l1_default_active = get_ue_golomb_31(gb) + 1;
if (pps->num_ref_idx_l0_default_active >= HEVC_MAX_REFS ||
pps->num_ref_idx_l1_default_active >= HEVC_MAX_REFS) {
av_log(avctx, AV_LOG_ERROR, "Too many default refs in PPS: %d/%d.\n",
pps->num_ref_idx_l0_default_active, pps->num_ref_idx_l1_default_active);
goto err;
}
pps->pic_init_qp_minus26 = get_se_golomb(gb);
pps->constrained_intra_pred_flag = get_bits1(gb);
pps->transform_skip_enabled_flag = get_bits1(gb);
pps->cu_qp_delta_enabled_flag = get_bits1(gb);
pps->diff_cu_qp_delta_depth = 0;
if (pps->cu_qp_delta_enabled_flag)
pps->diff_cu_qp_delta_depth = get_ue_golomb_long(gb);
if (pps->diff_cu_qp_delta_depth < 0 ||
pps->diff_cu_qp_delta_depth > sps->log2_diff_max_min_coding_block_size) {
av_log(avctx, AV_LOG_ERROR, "diff_cu_qp_delta_depth %d is invalid\n",
pps->diff_cu_qp_delta_depth);
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->cb_qp_offset = get_se_golomb(gb);
if (pps->cb_qp_offset < -12 || pps->cb_qp_offset > 12) {
av_log(avctx, AV_LOG_ERROR, "pps_cb_qp_offset out of range: %d\n",
pps->cb_qp_offset);
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->cr_qp_offset = get_se_golomb(gb);
if (pps->cr_qp_offset < -12 || pps->cr_qp_offset > 12) {
av_log(avctx, AV_LOG_ERROR, "pps_cr_qp_offset out of range: %d\n",
pps->cr_qp_offset);
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->pic_slice_level_chroma_qp_offsets_present_flag = get_bits1(gb);
pps->weighted_pred_flag = get_bits1(gb);
pps->weighted_bipred_flag = get_bits1(gb);
pps->transquant_bypass_enable_flag = get_bits1(gb);
pps->tiles_enabled_flag = get_bits1(gb);
pps->entropy_coding_sync_enabled_flag = get_bits1(gb);
if (pps->tiles_enabled_flag) {
int num_tile_columns_minus1 = get_ue_golomb(gb);
int num_tile_rows_minus1 = get_ue_golomb(gb);
if (num_tile_columns_minus1 < 0 ||
num_tile_columns_minus1 >= sps->ctb_width) {
av_log(avctx, AV_LOG_ERROR, "num_tile_columns_minus1 out of range: %d\n",
num_tile_columns_minus1);
ret = num_tile_columns_minus1 < 0 ? num_tile_columns_minus1 : AVERROR_INVALIDDATA;
goto err;
}
if (num_tile_rows_minus1 < 0 ||
num_tile_rows_minus1 >= sps->ctb_height) {
av_log(avctx, AV_LOG_ERROR, "num_tile_rows_minus1 out of range: %d\n",
num_tile_rows_minus1);
ret = num_tile_rows_minus1 < 0 ? num_tile_rows_minus1 : AVERROR_INVALIDDATA;
goto err;
}
pps->num_tile_columns = num_tile_columns_minus1 + 1;
pps->num_tile_rows = num_tile_rows_minus1 + 1;
pps->column_width = av_malloc_array(pps->num_tile_columns, sizeof(*pps->column_width));
pps->row_height = av_malloc_array(pps->num_tile_rows, sizeof(*pps->row_height));
if (!pps->column_width || !pps->row_height) {
ret = AVERROR(ENOMEM);
goto err;
}
pps->uniform_spacing_flag = get_bits1(gb);
if (!pps->uniform_spacing_flag) {
uint64_t sum = 0;
for (i = 0; i < pps->num_tile_columns - 1; i++) {
pps->column_width[i] = get_ue_golomb_long(gb) + 1;
sum += pps->column_width[i];
}
if (sum >= sps->ctb_width) {
av_log(avctx, AV_LOG_ERROR, "Invalid tile widths.\n");
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->column_width[pps->num_tile_columns - 1] = sps->ctb_width - sum;
sum = 0;
for (i = 0; i < pps->num_tile_rows - 1; i++) {
pps->row_height[i] = get_ue_golomb_long(gb) + 1;
sum += pps->row_height[i];
}
if (sum >= sps->ctb_height) {
av_log(avctx, AV_LOG_ERROR, "Invalid tile heights.\n");
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->row_height[pps->num_tile_rows - 1] = sps->ctb_height - sum;
}
pps->loop_filter_across_tiles_enabled_flag = get_bits1(gb);
}
pps->seq_loop_filter_across_slices_enabled_flag = get_bits1(gb);
pps->deblocking_filter_control_present_flag = get_bits1(gb);
if (pps->deblocking_filter_control_present_flag) {
pps->deblocking_filter_override_enabled_flag = get_bits1(gb);
pps->disable_dbf = get_bits1(gb);
if (!pps->disable_dbf) {
int beta_offset_div2 = get_se_golomb(gb);
int tc_offset_div2 = get_se_golomb(gb) ;
if (beta_offset_div2 < -6 || beta_offset_div2 > 6) {
av_log(avctx, AV_LOG_ERROR, "pps_beta_offset_div2 out of range: %d\n",
beta_offset_div2);
ret = AVERROR_INVALIDDATA;
goto err;
}
if (tc_offset_div2 < -6 || tc_offset_div2 > 6) {
av_log(avctx, AV_LOG_ERROR, "pps_tc_offset_div2 out of range: %d\n",
tc_offset_div2);
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->beta_offset = 2 * beta_offset_div2;
pps->tc_offset = 2 * tc_offset_div2;
}
}
pps->scaling_list_data_present_flag = get_bits1(gb);
if (pps->scaling_list_data_present_flag) {
set_default_scaling_list_data(&pps->scaling_list);
ret = scaling_list_data(gb, avctx, &pps->scaling_list, sps);
if (ret < 0)
goto err;
}
pps->lists_modification_present_flag = get_bits1(gb);
log2_parallel_merge_level_minus2 = get_ue_golomb_long(gb);
if (log2_parallel_merge_level_minus2 > sps->log2_ctb_size) {
av_log(avctx, AV_LOG_ERROR, "log2_parallel_merge_level_minus2 out of range: %d\n",
log2_parallel_merge_level_minus2);
ret = AVERROR_INVALIDDATA;
goto err;
}
pps->log2_parallel_merge_level = log2_parallel_merge_level_minus2 + 2;
pps->slice_header_extension_present_flag = get_bits1(gb);
pps->pps_extension_present_flag = get_bits1(gb);
if (pps->pps_extension_present_flag) {
pps->pps_range_extensions_flag = get_bits1(gb);
pps->pps_multilayer_extension_flag = get_bits1(gb);
pps->pps_3d_extension_flag = get_bits1(gb);
pps->pps_scc_extension_flag = get_bits1(gb);
skip_bits(gb, 4); // pps_extension_4bits
if (sps->ptl.general_ptl.profile_idc >= AV_PROFILE_HEVC_REXT && pps->pps_range_extensions_flag) {
if ((ret = pps_range_extensions(gb, avctx, pps, sps)) < 0)
goto err;
}
if (pps->pps_multilayer_extension_flag) {
if ((ret = pps_multilayer_extension(gb, avctx, pps, sps, vps)) < 0)
goto err;
}
if (pps->pps_3d_extension_flag) {
if ((ret = pps_3d_extension(gb, avctx, pps, sps)) < 0)
goto err;
}
if (pps->pps_scc_extension_flag) {
if ((ret = pps_scc_extension(gb, avctx, pps, sps)) < 0)
goto err;
}
}
ret = setup_pps(avctx, gb, pps, sps);
if (ret < 0)
goto err;
if (get_bits_left(gb) < 0) {
av_log(avctx, AV_LOG_WARNING,
"Overread PPS by %d bits\n", -get_bits_left(gb));
}
remove_pps(ps, pps_id);
ps->pps_list[pps_id] = pps;
return 0;
err:
ff_refstruct_unref(&pps);
return ret;
}
void ff_hevc_ps_uninit(HEVCParamSets *ps)
{
int i;
for (i = 0; i < FF_ARRAY_ELEMS(ps->vps_list); i++)
ff_refstruct_unref(&ps->vps_list[i]);
for (i = 0; i < FF_ARRAY_ELEMS(ps->sps_list); i++)
ff_refstruct_unref(&ps->sps_list[i]);
for (i = 0; i < FF_ARRAY_ELEMS(ps->pps_list); i++)
ff_refstruct_unref(&ps->pps_list[i]);
ps->sps = NULL;
ps->pps = NULL;
ps->vps = NULL;
}
int ff_hevc_compute_poc(const HEVCSPS *sps, int pocTid0, int poc_lsb, int nal_unit_type)
{
int max_poc_lsb = 1 << sps->log2_max_poc_lsb;
int prev_poc_lsb = pocTid0 % max_poc_lsb;
int prev_poc_msb = pocTid0 - prev_poc_lsb;
int poc_msb;
if (poc_lsb < prev_poc_lsb && prev_poc_lsb - poc_lsb >= max_poc_lsb / 2)
poc_msb = prev_poc_msb + max_poc_lsb;
else if (poc_lsb > prev_poc_lsb && poc_lsb - prev_poc_lsb > max_poc_lsb / 2)
poc_msb = prev_poc_msb - max_poc_lsb;
else
poc_msb = prev_poc_msb;
// For BLA picture types, POCmsb is set to 0.
if (nal_unit_type == HEVC_NAL_BLA_W_LP ||
nal_unit_type == HEVC_NAL_BLA_W_RADL ||
nal_unit_type == HEVC_NAL_BLA_N_LP)
poc_msb = 0;
return poc_msb + poc_lsb;
}
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