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FFmpeg/libavcodec/cbs_h266_syntax_template.c
Frank Plowman 8078a0b0fa avcodec/vvcdec: support rectangular single-slice subpics 
Co-authored-by: Nuo Mi <nuomi2021@gmail.com>
2024-04-02 20:24:31 +08:00

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144 KiB
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/*
* 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
*/
static int FUNC(rbsp_trailing_bits) (CodedBitstreamContext *ctx,
RWContext *rw)
{
int err;
fixed(1, rbsp_stop_one_bit, 1);
while (byte_alignment(rw) != 0)
fixed(1, rbsp_alignment_zero_bit, 0);
return 0;
}
static int FUNC(nal_unit_header) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawNALUnitHeader *current,
int expected_nal_unit_type)
{
int err;
fixed(1, forbidden_zero_bit, 0);
flag(nuh_reserved_zero_bit);
u(6, nuh_layer_id, 0, 55);
if (expected_nal_unit_type >= 0)
u(5, nal_unit_type, expected_nal_unit_type, expected_nal_unit_type);
else
ub(5, nal_unit_type);
u(3, nuh_temporal_id_plus1, 1, 7);
return 0;
}
static int FUNC(byte_alignment) (CodedBitstreamContext *ctx, RWContext *rw)
{
int err;
fixed(1, byte_alignment_bit_equal_to_one, 1);
while (byte_alignment(rw) != 0)
fixed(1, byte_alignment_bit_equal_to_zero, 0);
return 0;
}
static int FUNC(general_constraints_info) (CodedBitstreamContext *ctx,
RWContext *rw,
H266GeneralConstraintsInfo *current)
{
int err, i, num_additional_bits_used;
flag(gci_present_flag);
if (current->gci_present_flag) {
/* general */
flag(gci_intra_only_constraint_flag);
flag(gci_all_layers_independent_constraint_flag);
flag(gci_one_au_only_constraint_flag);
/* picture format */
u(4, gci_sixteen_minus_max_bitdepth_constraint_idc, 0, 8);
ub(2, gci_three_minus_max_chroma_format_constraint_idc);
/* NAL unit type related */
flag(gci_no_mixed_nalu_types_in_pic_constraint_flag);
flag(gci_no_trail_constraint_flag);
flag(gci_no_stsa_constraint_flag);
flag(gci_no_rasl_constraint_flag);
flag(gci_no_radl_constraint_flag);
flag(gci_no_idr_constraint_flag);
flag(gci_no_cra_constraint_flag);
flag(gci_no_gdr_constraint_flag);
flag(gci_no_aps_constraint_flag);
flag(gci_no_idr_rpl_constraint_flag);
/* tile, slice, subpicture partitioning */
flag(gci_one_tile_per_pic_constraint_flag);
flag(gci_pic_header_in_slice_header_constraint_flag);
flag(gci_one_slice_per_pic_constraint_flag);
flag(gci_no_rectangular_slice_constraint_flag);
flag(gci_one_slice_per_subpic_constraint_flag);
flag(gci_no_subpic_info_constraint_flag);
/* CTU and block partitioning */
ub(2, gci_three_minus_max_log2_ctu_size_constraint_idc);
flag(gci_no_partition_constraints_override_constraint_flag);
flag(gci_no_mtt_constraint_flag);
flag(gci_no_qtbtt_dual_tree_intra_constraint_flag);
/* intra */
flag(gci_no_palette_constraint_flag);
flag(gci_no_ibc_constraint_flag);
flag(gci_no_isp_constraint_flag);
flag(gci_no_mrl_constraint_flag);
flag(gci_no_mip_constraint_flag);
flag(gci_no_cclm_constraint_flag);
/* inter */
flag(gci_no_ref_pic_resampling_constraint_flag);
flag(gci_no_res_change_in_clvs_constraint_flag);
flag(gci_no_weighted_prediction_constraint_flag);
flag(gci_no_ref_wraparound_constraint_flag);
flag(gci_no_temporal_mvp_constraint_flag);
flag(gci_no_sbtmvp_constraint_flag);
flag(gci_no_amvr_constraint_flag);
flag(gci_no_bdof_constraint_flag);
flag(gci_no_smvd_constraint_flag);
flag(gci_no_dmvr_constraint_flag);
flag(gci_no_mmvd_constraint_flag);
flag(gci_no_affine_motion_constraint_flag);
flag(gci_no_prof_constraint_flag);
flag(gci_no_bcw_constraint_flag);
flag(gci_no_ciip_constraint_flag);
flag(gci_no_gpm_constraint_flag);
/* transform, quantization, residual */
flag(gci_no_luma_transform_size_64_constraint_flag);
flag(gci_no_transform_skip_constraint_flag);
flag(gci_no_bdpcm_constraint_flag);
flag(gci_no_mts_constraint_flag);
flag(gci_no_lfnst_constraint_flag);
flag(gci_no_joint_cbcr_constraint_flag);
flag(gci_no_sbt_constraint_flag);
flag(gci_no_act_constraint_flag);
flag(gci_no_explicit_scaling_list_constraint_flag);
flag(gci_no_dep_quant_constraint_flag);
flag(gci_no_sign_data_hiding_constraint_flag);
flag(gci_no_cu_qp_delta_constraint_flag);
flag(gci_no_chroma_qp_offset_constraint_flag);
/* loop filter */
flag(gci_no_sao_constraint_flag);
flag(gci_no_alf_constraint_flag);
flag(gci_no_ccalf_constraint_flag);
flag(gci_no_lmcs_constraint_flag);
flag(gci_no_ladf_constraint_flag);
flag(gci_no_virtual_boundaries_constraint_flag);
ub(8, gci_num_additional_bits);
if (current->gci_num_additional_bits > 5) {
flag(gci_all_rap_pictures_constraint_flag);
flag(gci_no_extended_precision_processing_constraint_flag);
flag(gci_no_ts_residual_coding_rice_constraint_flag);
flag(gci_no_rrc_rice_extension_constraint_flag);
flag(gci_no_persistent_rice_adaptation_constraint_flag);
flag(gci_no_reverse_last_sig_coeff_constraint_flag);
num_additional_bits_used = 6;
} else {
infer(gci_all_rap_pictures_constraint_flag, 0);
infer(gci_no_extended_precision_processing_constraint_flag, 0);
infer(gci_no_ts_residual_coding_rice_constraint_flag, 0);
infer(gci_no_rrc_rice_extension_constraint_flag, 0);
infer(gci_no_persistent_rice_adaptation_constraint_flag, 0);
infer(gci_no_reverse_last_sig_coeff_constraint_flag, 0);
num_additional_bits_used = 0;
}
for (i = 0; i < current->gci_num_additional_bits - num_additional_bits_used; i++)
flags(gci_reserved_bit[i], 1, i);
}
while (byte_alignment(rw) != 0)
fixed(1, gci_alignment_zero_bit, 0);
return 0;
}
static int FUNC(profile_tier_level) (CodedBitstreamContext *ctx,
RWContext *rw,
H266RawProfileTierLevel *current,
int profile_tier_present_flag,
int max_num_sub_layers_minus1)
{
int err, i;
if (profile_tier_present_flag) {
ub(7, general_profile_idc);
flag(general_tier_flag);
}
ub(8, general_level_idc);
flag(ptl_frame_only_constraint_flag);
flag(ptl_multilayer_enabled_flag);
if (profile_tier_present_flag) {
CHECK(FUNC(general_constraints_info) (ctx, rw,
&current->
general_constraints_info));
}
for (i = max_num_sub_layers_minus1 - 1; i >= 0; i--)
flags(ptl_sublayer_level_present_flag[i], 1, i);
while (byte_alignment(rw) != 0)
flag(ptl_reserved_zero_bit);
for (i = max_num_sub_layers_minus1 - 1; i >= 0; i--)
if (current->ptl_sublayer_level_present_flag[i])
ubs(8, sublayer_level_idc[i], 1, i);
if (profile_tier_present_flag) {
ub(8, ptl_num_sub_profiles);
for (i = 0; i < current->ptl_num_sub_profiles; i++)
ubs(32, general_sub_profile_idc[i], 1, i);
}
return 0;
}
static int FUNC(vui_parameters_default) (CodedBitstreamContext *ctx,
RWContext *rw, H266RawVUI *current)
{
//defined in D.8
infer(vui_progressive_source_flag, 0);
infer(vui_interlaced_source_flag, 0);
infer(vui_non_packed_constraint_flag, 0);
infer(vui_non_projected_constraint_flag, 0);
infer(vui_aspect_ratio_constant_flag, 0);
infer(vui_aspect_ratio_idc, 0);
infer(vui_overscan_info_present_flag, 0);
infer(vui_colour_primaries, 2);
infer(vui_transfer_characteristics, 2);
infer(vui_matrix_coeffs, 2);
infer(vui_full_range_flag, 0);
infer(vui_chroma_sample_loc_type_frame, 6);
infer(vui_chroma_sample_loc_type_top_field, 6);
infer(vui_chroma_sample_loc_type_bottom_field, 6);
return 0;
}
static int FUNC(vui_parameters) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawVUI *current,
uint8_t chroma_format_idc)
{
int err;
flag(vui_progressive_source_flag);
flag(vui_interlaced_source_flag);
flag(vui_non_packed_constraint_flag);
flag(vui_non_projected_constraint_flag);
flag(vui_aspect_ratio_info_present_flag);
if (current->vui_aspect_ratio_info_present_flag) {
flag(vui_aspect_ratio_constant_flag);
ub(8, vui_aspect_ratio_idc);
if (current->vui_aspect_ratio_idc == 255) {
ub(16, vui_sar_width);
ub(16, vui_sar_height);
}
} else {
infer(vui_aspect_ratio_constant_flag, 0);
infer(vui_aspect_ratio_idc, 0);
}
flag(vui_overscan_info_present_flag);
if (current->vui_overscan_info_present_flag)
flag(vui_overscan_appropriate_flag);
flag(vui_colour_description_present_flag);
if (current->vui_colour_description_present_flag) {
ub(8, vui_colour_primaries);
av_log(ctx->log_ctx, AV_LOG_DEBUG, "vui_colour_primaries == %d \n",
current->vui_colour_primaries);
ub(8, vui_transfer_characteristics);
av_log(ctx->log_ctx, AV_LOG_DEBUG,
"vui_transfer_characteristics == %d \n",
current->vui_transfer_characteristics);
ub(8, vui_matrix_coeffs);
av_log(ctx->log_ctx, AV_LOG_DEBUG, "vui_matrix_coeffs == %d \n",
current->vui_matrix_coeffs);
flag(vui_full_range_flag);
} else {
infer(vui_colour_primaries, 2);
infer(vui_transfer_characteristics, 2);
infer(vui_matrix_coeffs, 2);
infer(vui_full_range_flag, 0);
}
flag(vui_chroma_loc_info_present_flag);
if (chroma_format_idc != 1 && current->vui_chroma_loc_info_present_flag) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "chroma_format_idc == %d,"
"vui_chroma_loc_info_present_flag can't not be true",
chroma_format_idc);
return AVERROR_INVALIDDATA;
}
if (current->vui_chroma_loc_info_present_flag) {
if (current->vui_progressive_source_flag &&
!current->vui_interlaced_source_flag) {
ue(vui_chroma_sample_loc_type_frame, 0, 6);
} else {
ue(vui_chroma_sample_loc_type_top_field, 0, 6);
ue(vui_chroma_sample_loc_type_bottom_field, 0, 6);
}
} else {
if (chroma_format_idc == 1) {
infer(vui_chroma_sample_loc_type_frame, 6);
infer(vui_chroma_sample_loc_type_top_field,
current->vui_chroma_sample_loc_type_frame);
infer(vui_chroma_sample_loc_type_bottom_field,
current->vui_chroma_sample_loc_type_frame);
}
}
return 0;
}
static int FUNC(payload_extension) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawExtensionData *current,
uint32_t payload_size, int cur_pos)
{
int err;
size_t byte_length, k;
#ifdef READ
GetBitContext tmp;
int bits_left, payload_zero_bits;
if (!cbs_h265_payload_extension_present(rw, payload_size, cur_pos))
return 0;
bits_left = 8 * payload_size - cur_pos;
tmp = *rw;
if (bits_left > 8)
skip_bits_long(&tmp, bits_left - 8);
payload_zero_bits = get_bits(&tmp, FFMIN(bits_left, 8));
if (!payload_zero_bits)
return AVERROR_INVALIDDATA;
payload_zero_bits = ff_ctz(payload_zero_bits);
current->bit_length = bits_left - payload_zero_bits - 1;
allocate(current->data, (current->bit_length + 7) / 8);
#endif
byte_length = (current->bit_length + 7) / 8;
for (k = 0; k < byte_length; k++) {
int length = FFMIN(current->bit_length - k * 8, 8);
xu(length, reserved_payload_extension_data, current->data[k],
0, MAX_UINT_BITS(length), 0);
}
return 0;
}
static int FUNC(vui_payload) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawVUI *current, uint16_t vui_payload_size,
uint8_t chroma_format_idc)
{
int err;
int start_position, current_position;
start_position = bit_position(rw);
CHECK(FUNC(vui_parameters) (ctx, rw, current, chroma_format_idc));
current_position = bit_position(rw) - start_position;
if (current_position < 8 * vui_payload_size) {
CHECK(FUNC(payload_extension) (ctx, rw, &current->extension_data,
vui_payload_size, current_position));
fixed(1, vui_payload_bit_equal_to_one, 1);
while (byte_alignment(rw) != 0)
fixed(1, vui_payload_bit_equal_to_zero, 0);
}
return 0;
}
static int FUNC(extension_data) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawExtensionData *current)
{
int err;
size_t k;
#ifdef READ
GetBitContext start;
uint8_t bit;
start = *rw;
for (k = 0; cbs_h2645_read_more_rbsp_data(rw); k++)
skip_bits(rw, 1);
current->bit_length = k;
if (k > 0) {
*rw = start;
allocate(current->data, (current->bit_length + 7) / 8);
for (k = 0; k < current->bit_length; k++) {
xu(1, extension_data, bit, 0, 1, 0);
current->data[k / 8] |= bit << (7 - k % 8);
}
}
#else
for (k = 0; k < current->bit_length; k++)
xu(1, extension_data, current->data[k / 8] >> (7 - k % 8) & 1, 0, 1, 0);
#endif
return 0;
}
static int FUNC(dpb_parameters) (CodedBitstreamContext *ctx, RWContext *rw,
H266DpbParameters *current,
uint8_t max_sublayers_minus1,
uint8_t sublayer_info_flag)
{
int err, i;
for (i = (sublayer_info_flag ? 0 : max_sublayers_minus1);
i <= max_sublayers_minus1; i++) {
ues(dpb_max_dec_pic_buffering_minus1[i], 0, VVC_MAX_DPB_SIZE - 1, 1, i);
ues(dpb_max_num_reorder_pics[i],
0, current->dpb_max_dec_pic_buffering_minus1[i], 1, i);
ues(dpb_max_latency_increase_plus1[i], 0, UINT32_MAX - 1, 1, i);
}
return 0;
}
static int FUNC(ref_pic_list_struct) (CodedBitstreamContext *ctx,
RWContext *rw,
H266RefPicListStruct *current,
uint8_t list_idx, uint8_t rpls_idx,
const H266RawSPS *sps)
{
CodedBitstreamH266Context *h266 = ctx->priv_data;
int err, i, j, general_layer_idx = -1, num_direct_ref_layers = 0;
const H266RawVPS *vps = h266->vps[sps->sps_video_parameter_set_id];
if (!vps) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"VPS id %d not available.\n", sps->sps_video_parameter_set_id);
return AVERROR_INVALIDDATA;
}
//7.4.3.3 (29)
for (i = 0; i <= vps->vps_max_layers_minus1; i++) {
if (sps->nal_unit_header.nuh_layer_id == vps->vps_layer_id[i]) {
general_layer_idx = i;
break;
}
}
if (general_layer_idx < 0) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "vps_layer_id %d not available.\n",
sps->nal_unit_header.nuh_layer_id);
return AVERROR_INVALIDDATA;
}
//7.4.3.3 (28)
for (j = 0; j <= vps->vps_max_layers_minus1; j++) {
if (vps->vps_direct_ref_layer_flag[general_layer_idx][j])
num_direct_ref_layers++;
}
ue(num_ref_entries, 0, VVC_MAX_REF_ENTRIES);
if (sps->sps_long_term_ref_pics_flag &&
rpls_idx < sps->sps_num_ref_pic_lists[list_idx] &&
current->num_ref_entries > 0)
flag(ltrp_in_header_flag);
if (sps->sps_long_term_ref_pics_flag &&
rpls_idx == sps->sps_num_ref_pic_lists[list_idx])
infer(ltrp_in_header_flag, 1);
for (i = 0, j = 0; i < current->num_ref_entries; i++) {
if (sps->sps_inter_layer_prediction_enabled_flag)
flags(inter_layer_ref_pic_flag[i], 1, i);
else
infer(inter_layer_ref_pic_flag[i], 0);
if (!current->inter_layer_ref_pic_flag[i]) {
if (sps->sps_long_term_ref_pics_flag)
flags(st_ref_pic_flag[i], 1, i);
else
infer(st_ref_pic_flag[i], 1);
if (current->st_ref_pic_flag[i]) {
int abs_delta_poc_st;
ues(abs_delta_poc_st[i], 0, MAX_UINT_BITS(15), 1, i);
if ((sps->sps_weighted_pred_flag ||
sps->sps_weighted_bipred_flag) && i != 0)
abs_delta_poc_st = current->abs_delta_poc_st[i];
else
abs_delta_poc_st = current->abs_delta_poc_st[i] + 1;
if (abs_delta_poc_st > 0)
flags(strp_entry_sign_flag[i], 1, i);
} else {
if (!current->ltrp_in_header_flag) {
uint8_t bits = sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4;
ubs(bits, rpls_poc_lsb_lt[j], 1, j);
j++;
}
}
} else {
if (num_direct_ref_layers == 0) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"num_direct_ref_layers needs > 0.\n");
return AVERROR_INVALIDDATA;
}
ues(ilrp_idx[i], 0, num_direct_ref_layers - 1, 1, i);
}
}
return 0;
}
static int FUNC(ref_pic_lists) (CodedBitstreamContext *ctx, RWContext *rw,
const H266RawSPS *sps, const H266RawPPS *pps,
H266RefPicLists *current) {
const H266RefPicListStruct * ref_list;
int err, i, j, num_ltrp_entries;
for (i = 0; i < 2; i++) {
if (sps->sps_num_ref_pic_lists[i] > 0 &&
(i == 0 || (i == 1 && pps->pps_rpl1_idx_present_flag))) {
flags(rpl_sps_flag[i], 1, i);
} else {
if (sps->sps_num_ref_pic_lists[i] == 0) {
infer(rpl_sps_flag[i], 0);
} else {
if (!pps->pps_rpl1_idx_present_flag && i == 1)
infer(rpl_sps_flag[1], current->rpl_sps_flag[0]);
}
}
if (current->rpl_sps_flag[i]) {
if (sps->sps_num_ref_pic_lists[i] > 1 &&
(i == 0 || (i == 1 && pps->pps_rpl1_idx_present_flag))) {
uint8_t bits = av_ceil_log2(sps->sps_num_ref_pic_lists[i]);
us(bits, rpl_idx[i], 0, sps->sps_num_ref_pic_lists[i] - 1, 1, i);
} else if (sps->sps_num_ref_pic_lists[i] == 1) {
infer(rpl_idx[i], 0);
} else if (i == 1 && !pps->pps_rpl1_idx_present_flag) {
infer(rpl_idx[1], current->rpl_idx[0]);
} else {
//how to handle this? or never happpend?
av_log(ctx->log_ctx, AV_LOG_ERROR,
"can't infer the rpl_idx[i]\n");
return AVERROR_PATCHWELCOME;
}
memcpy(&current->rpl_ref_list[i],
&sps->sps_ref_pic_list_struct[i][current->rpl_idx[i]],
sizeof(current->rpl_ref_list[i]));
} else {
CHECK(FUNC(ref_pic_list_struct) (ctx, rw, &current->rpl_ref_list[i],
i, sps->sps_num_ref_pic_lists[i],
sps));
}
ref_list = &current->rpl_ref_list[i];
num_ltrp_entries = 0;
for (int k = 0; k < ref_list->num_ref_entries; k++) {
if (!ref_list->inter_layer_ref_pic_flag[k]) {
if (!ref_list->st_ref_pic_flag[k]) {
num_ltrp_entries++;
}
}
}
for (j = 0; j < num_ltrp_entries; j++) {
if (ref_list->ltrp_in_header_flag) {
ubs(sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4,
poc_lsb_lt[i][j], 2, i, j);
}
flags(delta_poc_msb_cycle_present_flag[i][j], 2, i, j);
if (current->delta_poc_msb_cycle_present_flag[i][j]) {
uint32_t max =
1 << (32 - sps->sps_log2_max_pic_order_cnt_lsb_minus4 - 4);
ues(delta_poc_msb_cycle_lt[i][j], 0, max, 2, i, j);
}
}
}
return 0;
}
static int FUNC(general_timing_hrd_parameters)(CodedBitstreamContext *ctx,
RWContext *rw,
H266RawGeneralTimingHrdParameters *current)
{
int err;
ub(32, num_units_in_tick);
u(32, time_scale, 1, MAX_UINT_BITS(32));
flag(general_nal_hrd_params_present_flag);
flag(general_vcl_hrd_params_present_flag);
if (current->general_nal_hrd_params_present_flag ||
current->general_vcl_hrd_params_present_flag) {
flag(general_same_pic_timing_in_all_ols_flag);
flag(general_du_hrd_params_present_flag);
if (current->general_du_hrd_params_present_flag)
ub(8, tick_divisor_minus2);
ub(4, bit_rate_scale);
ub(4, cpb_size_scale);
if (current->general_du_hrd_params_present_flag)
ub(4, cpb_size_du_scale);
ue(hrd_cpb_cnt_minus1, 0, 31);
} else {
//infer general_same_pic_timing_in_all_ols_flag?
infer(general_du_hrd_params_present_flag, 0);
}
return 0;
}
static int FUNC(sublayer_hrd_parameters) (CodedBitstreamContext *ctx,
RWContext *rw,
H266RawSubLayerHRDParameters *current,
int sublayer_id,
const H266RawGeneralTimingHrdParameters *general)
{
int err, i;
for (i = 0; i <= general->hrd_cpb_cnt_minus1; i++) {
ues(bit_rate_value_minus1[sublayer_id][i], 0, UINT32_MAX - 1, 2,
sublayer_id, i);
ues(cpb_size_value_minus1[sublayer_id][i], 0, UINT32_MAX - 1, 2,
sublayer_id, i);
if (general->general_du_hrd_params_present_flag) {
ues(cpb_size_du_value_minus1[sublayer_id][i],
0, UINT32_MAX - 1, 2, sublayer_id, i);
ues(bit_rate_du_value_minus1[sublayer_id][i],
0, UINT32_MAX - 1, 2, sublayer_id, i);
}
flags(cbr_flag[sublayer_id][i], 2, sublayer_id, i);
}
return 0;
}
static int FUNC(ols_timing_hrd_parameters) (CodedBitstreamContext *ctx,
RWContext *rw, H266RawOlsTimingHrdParameters *current,
uint8_t first_sublayer, uint8_t max_sublayers_minus1,
const H266RawGeneralTimingHrdParameters *general)
{
int err, i;
for (i = first_sublayer; i <= max_sublayers_minus1; i++) {
flags(fixed_pic_rate_general_flag[i], 1, i);
if (!current->fixed_pic_rate_general_flag[i])
flags(fixed_pic_rate_within_cvs_flag[i], 1, i);
else
infer(fixed_pic_rate_within_cvs_flag[i], 1);
if (current->fixed_pic_rate_within_cvs_flag[i]) {
ues(elemental_duration_in_tc_minus1[i], 0, 2047, 1, i);
infer(low_delay_hrd_flag[i], 0);
} else if ((general->general_nal_hrd_params_present_flag ||
general->general_vcl_hrd_params_present_flag) &&
general->hrd_cpb_cnt_minus1 == 0) {
flags(low_delay_hrd_flag[i], 1, i);
} else {
infer(low_delay_hrd_flag[i], 0);
}
if (general->general_nal_hrd_params_present_flag)
CHECK(FUNC(sublayer_hrd_parameters) (ctx, rw,
&current->nal_sub_layer_hrd_parameters,
i, general));
if (general->general_vcl_hrd_params_present_flag)
CHECK(FUNC(sublayer_hrd_parameters) (ctx, rw,
&current->nal_sub_layer_hrd_parameters,
i, general));
}
return 0;
}
static int FUNC(opi)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawOPI *current)
{
int err;
HEADER("Operating point information");
CHECK(FUNC(nal_unit_header)(ctx, rw,
&current->nal_unit_header, VVC_OPI_NUT));
flag(opi_ols_info_present_flag);
flag(opi_htid_info_present_flag);
if(current->opi_ols_info_present_flag)
ue(opi_ols_idx, 0, VVC_MAX_TOTAL_NUM_OLSS - 1);
if(current->opi_htid_info_present_flag)
ub(3, opi_htid_plus1);
flag(opi_extension_flag);
if (current->opi_extension_flag)
CHECK(FUNC(extension_data) (ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(dci)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawDCI *current)
{
int err, i;
HEADER("Decoding capability information");
CHECK(FUNC(nal_unit_header)(ctx, rw,
&current->nal_unit_header, VVC_DCI_NUT));
ub(4, dci_reserved_zero_4bits);
ub(4, dci_num_ptls_minus1);
for (i = 0; i <= current->dci_num_ptls_minus1; i++)
CHECK(FUNC(profile_tier_level)(ctx, rw,
current->dci_profile_tier_level + i, 1, 0));
flag(dci_extension_flag);
if (current->dci_extension_flag)
CHECK(FUNC(extension_data)(ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits)(ctx, rw));
return 0;
}
static int FUNC(vps) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawVPS *current)
{
int err, i, j, k;
uint16_t total_num_olss = 0;
uint8_t ols_mode_idc = 0;
uint16_t num_multi_layer_olss = 0;
uint8_t layer_included_in_ols_flag[VVC_MAX_TOTAL_NUM_OLSS][VVC_MAX_LAYERS];
uint8_t num_ref_layers[VVC_MAX_LAYERS];
uint8_t reference_layer_idx[VVC_MAX_LAYERS][VVC_MAX_LAYERS];
HEADER("Video Parameter Set");
CHECK(FUNC(nal_unit_header) (ctx, rw,
&current->nal_unit_header, VVC_VPS_NUT));
u(4, vps_video_parameter_set_id, 1, VVC_MAX_VPS_COUNT - 1);
ub(6, vps_max_layers_minus1);
u(3, vps_max_sublayers_minus1, 0, 6);
if (current->vps_max_layers_minus1 > 0
&& current->vps_max_sublayers_minus1 > 0)
flag(vps_default_ptl_dpb_hrd_max_tid_flag);
else
infer(vps_default_ptl_dpb_hrd_max_tid_flag, 1);
if (current->vps_max_layers_minus1 > 0)
flag(vps_all_independent_layers_flag);
else
infer(vps_all_independent_layers_flag, 1);
for (i = 0; i <= current->vps_max_layers_minus1; i++) {
ubs(6, vps_layer_id[i], 1, i);
if (i > 0 && current->vps_layer_id[i] <= current->vps_layer_id[i - 1]) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"vps_layer_id[%d](%d) should > vps_layer_id[%d](%d).\n",
i, current->vps_layer_id[i], i - 1,
current->vps_layer_id[i - 1]);
return AVERROR_INVALIDDATA;
}
if (i > 0 && !current->vps_all_independent_layers_flag) {
flags(vps_independent_layer_flag[i], 1, i);
if (!current->vps_independent_layer_flag[i]) {
flags(vps_max_tid_ref_present_flag[i], 1, i);
for (j = 0; j < i; j++) {
flags(vps_direct_ref_layer_flag[i][j], 2, i, j);
if (current->vps_max_tid_ref_present_flag[i] &&
current->vps_direct_ref_layer_flag[i][j]) {
ubs(3, vps_max_tid_il_ref_pics_plus1[i][j], 2, i, j);
} else {
infer(vps_max_tid_il_ref_pics_plus1[i][j],
current->vps_max_sublayers_minus1 + 1);
}
}
} else {
for (j = 0; j < i; j++) {
infer(vps_direct_ref_layer_flag[i][j], 0);
}
}
} else {
infer(vps_independent_layer_flag[i], 1);
for (j = 0; j < i; j++) {
infer(vps_direct_ref_layer_flag[i][j], 0);
}
}
}
if (current->vps_max_layers_minus1 > 0) {
if (current->vps_all_independent_layers_flag)
flag(vps_each_layer_is_an_ols_flag);
else
infer(vps_each_layer_is_an_ols_flag, 0);
if (!current->vps_each_layer_is_an_ols_flag) {
if (!current->vps_all_independent_layers_flag)
ub(2, vps_ols_mode_idc);
else
infer(vps_ols_mode_idc, 2);
if (current->vps_ols_mode_idc == 2) {
ub(8, vps_num_output_layer_sets_minus2);
for (i = 1; i <= current->vps_num_output_layer_sets_minus2 + 1;
i++)
for (j = 0; j <= current->vps_max_layers_minus1; j++)
flags(vps_ols_output_layer_flag[i][j], 2, i, j);
}
ols_mode_idc = current->vps_ols_mode_idc;
} else {
ols_mode_idc = 4;
}
if (ols_mode_idc == 4 || ols_mode_idc == 0 || ols_mode_idc == 1)
total_num_olss = current->vps_max_layers_minus1 + 1;
else if (ols_mode_idc == 2)
total_num_olss = current->vps_num_output_layer_sets_minus2 + 2;
else
av_log(ctx->log_ctx, AV_LOG_ERROR,
"ols_mode_idc == 3, patch welcome");
u(8, vps_num_ptls_minus1, 0, total_num_olss - 1);
} else {
infer(vps_each_layer_is_an_ols_flag, 1);
infer(vps_num_ptls_minus1, 0);
}
{
//calc NumMultiLayerOlss
int m;
uint8_t dependency_flag[VVC_MAX_LAYERS][VVC_MAX_LAYERS];
uint16_t num_output_layers_in_ols[VVC_MAX_TOTAL_NUM_OLSS];
uint8_t num_sub_layers_in_layer_in_ols[VVC_MAX_TOTAL_NUM_OLSS][VVC_MAX_TOTAL_NUM_OLSS];
uint8_t output_layer_idx[VVC_MAX_TOTAL_NUM_OLSS][VVC_MAX_LAYERS];
//7.4.3.3 vps_direct_ref_layer_flag section
for (i = 0; i <= current->vps_max_layers_minus1; i++) {
for (j = 0; j <= current->vps_max_layers_minus1; j++) {
dependency_flag[i][j] = current->vps_direct_ref_layer_flag[i][j];
for (k = 0; k < i; k++) {
if (current->vps_direct_ref_layer_flag[i][k] &&
dependency_flag[k][j])
dependency_flag[i][j] = 1;
}
}
}
for (i = 0; i <= current->vps_max_layers_minus1; i++) {
int r;
for (j = 0, r = 0; j <= current->vps_max_layers_minus1; j++) {
if (dependency_flag[i][j])
reference_layer_idx[i][r++] = j;
}
num_ref_layers[i] = r;
}
//7.4.3.3 vps_ols_output_layer_flag section
num_output_layers_in_ols[0] = 1;
num_sub_layers_in_layer_in_ols[0][0] =
current->vps_ptl_max_tid[current->vps_ols_ptl_idx[0]] + 1;
for (i = 1; i < total_num_olss; i++) {
if (ols_mode_idc == 4 || ols_mode_idc == 0) {
num_output_layers_in_ols[i] = 1;
if (current->vps_each_layer_is_an_ols_flag) {
num_sub_layers_in_layer_in_ols[i][0] =
current->vps_ptl_max_tid[current->vps_ols_ptl_idx[i]] + 1;
} else {
num_sub_layers_in_layer_in_ols[i][i] =
current->vps_ptl_max_tid[current->vps_ols_ptl_idx[i]] + 1;
for (k = i - 1; k >= 0; k--) {
num_sub_layers_in_layer_in_ols[i][k] = 0;
for (m = k + 1; m <= i; m++) {
uint8_t max_sublayer_needed =
FFMIN(num_sub_layers_in_layer_in_ols[i][m],
current->vps_max_tid_il_ref_pics_plus1[m][k]);
if (current->vps_direct_ref_layer_flag[m][k] &&
num_sub_layers_in_layer_in_ols[i][k] < max_sublayer_needed)
num_sub_layers_in_layer_in_ols[i][k] = max_sublayer_needed;
}
}
}
} else if (current->vps_ols_mode_idc == 1) {
num_output_layers_in_ols[i] = i + 1;
for (j = 0; j < num_output_layers_in_ols[i]; j++) {
num_sub_layers_in_layer_in_ols[i][j] =
current->vps_ptl_max_tid[current->vps_ols_ptl_idx[i]] + 1;
}
} else if (current->vps_ols_mode_idc == 2) {
uint8_t highest_included_layer = 0;
for (j = 0; j <= current->vps_max_layers_minus1; j++) {
layer_included_in_ols_flag[i][j] = 0;
num_sub_layers_in_layer_in_ols[i][j] = 0;
}
for (k = 0, j = 0; k <= current->vps_max_layers_minus1; k++) {
if (current->vps_ols_output_layer_flag[i][k]) {
layer_included_in_ols_flag[i][k] = 1;
highest_included_layer = k;
output_layer_idx[i][j] = k;
num_sub_layers_in_layer_in_ols[i][k] =
current->vps_ptl_max_tid[current->
vps_ols_ptl_idx[i]] + 1;
j++;
}
}
num_output_layers_in_ols[i] = j;
for (j = 0; j < num_output_layers_in_ols[i]; j++) {
int idx = output_layer_idx[i][j];
for (k = 0; k < num_ref_layers[idx]; k++) {
if (!layer_included_in_ols_flag[i][reference_layer_idx[idx][k]])
layer_included_in_ols_flag[i][reference_layer_idx[idx][k]] = 1;
}
}
for (k = highest_included_layer - 1; k >= 0; k--) {
if (layer_included_in_ols_flag[i][k] &&
!current->vps_ols_output_layer_flag[i][k]) {
for (m = k + 1; m <= highest_included_layer; m++) {
uint8_t max_sublayer_needed =
FFMIN(num_sub_layers_in_layer_in_ols[i][m],
current->vps_max_tid_il_ref_pics_plus1[m][k]);
if (current->vps_direct_ref_layer_flag[m][k] &&
layer_included_in_ols_flag[i][m] &&
num_sub_layers_in_layer_in_ols[i][k] <
max_sublayer_needed)
num_sub_layers_in_layer_in_ols[i][k] =
max_sublayer_needed;
}
}
}
}
if (!num_output_layers_in_ols[i])
return AVERROR_INVALIDDATA;
}
for (i = 1; i < total_num_olss; i++) {
int num_layers_in_ols = 0;
if (current->vps_each_layer_is_an_ols_flag) {
num_layers_in_ols = 1;
} else if (current->vps_ols_mode_idc == 0 ||
current->vps_ols_mode_idc == 1) {
num_layers_in_ols = i + 1;
} else if (current->vps_ols_mode_idc == 2) {
for (k = 0, j = 0; k <= current->vps_max_layers_minus1; k++)
if (layer_included_in_ols_flag[i][k])
j++;
num_layers_in_ols = j;
}
if (num_layers_in_ols > 1) {
num_multi_layer_olss++;
}
}
if (!current->vps_each_layer_is_an_ols_flag && num_multi_layer_olss == 0)
return AVERROR_INVALIDDATA;
}
for (i = 0; i <= current->vps_num_ptls_minus1; i++) {
if (i > 0)
flags(vps_pt_present_flag[i], 1, i);
else
infer(vps_pt_present_flag[i], 1);
if (!current->vps_default_ptl_dpb_hrd_max_tid_flag)
us(3, vps_ptl_max_tid[i], 0, current->vps_max_sublayers_minus1, 1, i);
else
infer(vps_ptl_max_tid[i], current->vps_max_sublayers_minus1);
}
while (byte_alignment(rw) != 0)
fixed(1, vps_ptl_alignment_zero_bit, 0);
for (i = 0; i <= current->vps_num_ptls_minus1; i++) {
CHECK(FUNC(profile_tier_level) (ctx, rw,
current->vps_profile_tier_level + i,
current->vps_pt_present_flag[i],
current->vps_ptl_max_tid[i]));
}
for (i = 0; i < total_num_olss; i++) {
if (current->vps_num_ptls_minus1 > 0 &&
current->vps_num_ptls_minus1 + 1 != total_num_olss) {
us(8, vps_ols_ptl_idx[i], 0, current->vps_num_ptls_minus1, 1, i);
} else if (current->vps_num_ptls_minus1 == 0) {
infer(vps_ols_ptl_idx[i], 0);
} else {
infer(vps_ols_ptl_idx[i], i);
}
}
if (!current->vps_each_layer_is_an_ols_flag) {
uint16_t vps_num_dpb_params;
ue(vps_num_dpb_params_minus1, 0, num_multi_layer_olss - 1);
if (current->vps_each_layer_is_an_ols_flag)
vps_num_dpb_params = 0;
else
vps_num_dpb_params = current->vps_num_dpb_params_minus1 + 1;
if (current->vps_max_sublayers_minus1 > 0)
flag(vps_sublayer_dpb_params_present_flag);
else
infer(vps_sublayer_dpb_params_present_flag, 0);
for (i = 0; i < vps_num_dpb_params; i++) {
if (!current->vps_default_ptl_dpb_hrd_max_tid_flag)
us(3, vps_dpb_max_tid[i], 0, current->vps_max_sublayers_minus1,
1, i);
else
infer(vps_dpb_max_tid[i], current->vps_max_sublayers_minus1);
CHECK(FUNC(dpb_parameters) (ctx, rw, current->vps_dpb_params + i,
current->vps_dpb_max_tid[i],
current->
vps_sublayer_dpb_params_present_flag));
}
for (i = 0; i < num_multi_layer_olss; i++) {
ues(vps_ols_dpb_pic_width[i], 0, UINT16_MAX, 1, i);
ues(vps_ols_dpb_pic_height[i], 0, UINT16_MAX, 1, i);
ubs(2, vps_ols_dpb_chroma_format[i], 1, i);
ues(vps_ols_dpb_bitdepth_minus8[i], 0, 8, 1, i);
if (vps_num_dpb_params > 1
&& vps_num_dpb_params != num_multi_layer_olss)
ues(vps_ols_dpb_params_idx[i], 0, vps_num_dpb_params - 1, 1, i);
else if (vps_num_dpb_params == 1)
infer(vps_ols_dpb_params_idx[i], 0);
else
infer(vps_ols_dpb_params_idx[i], i);
}
flag(vps_timing_hrd_params_present_flag);
if (current->vps_timing_hrd_params_present_flag) {
CHECK(FUNC(general_timing_hrd_parameters) (ctx, rw,
&current->
vps_general_timing_hrd_parameters));
if (current->vps_max_sublayers_minus1 > 0)
flag(vps_sublayer_cpb_params_present_flag);
else
infer(vps_sublayer_cpb_params_present_flag, 0);
ue(vps_num_ols_timing_hrd_params_minus1, 0,
num_multi_layer_olss - 1);
for (i = 0; i <= current->vps_num_ols_timing_hrd_params_minus1; i++) {
uint8_t first_sublayer;
if (!current->vps_default_ptl_dpb_hrd_max_tid_flag)
us(3, vps_hrd_max_tid[i], 0,
current->vps_max_sublayers_minus1, 1, i);
else
infer(vps_hrd_max_tid[i],
current->vps_max_sublayers_minus1);
first_sublayer = current->vps_sublayer_cpb_params_present_flag ?
0 : current->vps_hrd_max_tid[i];
CHECK(FUNC(ols_timing_hrd_parameters)
(ctx, rw, &current->vps_ols_timing_hrd_parameters,
first_sublayer, current->vps_max_sublayers_minus1,
&current->vps_general_timing_hrd_parameters));
}
if (current->vps_num_ols_timing_hrd_params_minus1 > 0 &&
current->vps_num_ols_timing_hrd_params_minus1 + 1 !=
num_multi_layer_olss) {
for (i = 0; i < num_multi_layer_olss; i++) {
ues(vps_ols_timing_hrd_idx[i], 0,
current->vps_num_ols_timing_hrd_params_minus1, 1, i);
}
} else if (current->vps_num_ols_timing_hrd_params_minus1 == 0) {
for (i = 0; i < num_multi_layer_olss; i++)
infer(vps_ols_timing_hrd_idx[i], 0);
} else {
for (i = 0; i < num_multi_layer_olss; i++)
infer(vps_ols_timing_hrd_idx[i], i);
}
}
}
flag(vps_extension_flag);
if (current->vps_extension_flag)
CHECK(FUNC(extension_data) (ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawSPS *current)
{
int err;
flag(sps_extended_precision_flag);
if (current->sps_transform_skip_enabled_flag)
flag(sps_ts_residual_coding_rice_present_in_sh_flag);
else
infer(sps_ts_residual_coding_rice_present_in_sh_flag, 0);
flag(sps_rrc_rice_extension_flag);
flag(sps_persistent_rice_adaptation_enabled_flag);
flag(sps_reverse_last_sig_coeff_enabled_flag);
return 0;
}
static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawSPS *current)
{
CodedBitstreamH266Context *h266 = ctx->priv_data;
int err, i, j;
unsigned int ctb_log2_size_y, min_cb_log2_size_y,
min_qt_log2_size_intra_y, min_qt_log2_size_inter_y,
ctb_size_y, max_num_merge_cand, tmp_width_val, tmp_height_val;
uint8_t qp_bd_offset;
static const uint8_t h266_sub_width_c[] = {
1, 2, 2, 1
};
static const uint8_t h266_sub_height_c[] = {
1, 2, 1, 1
};
HEADER("Sequence Parameter Set");
CHECK(FUNC(nal_unit_header) (ctx, rw,
&current->nal_unit_header, VVC_SPS_NUT));
ub(4, sps_seq_parameter_set_id);
ub(4, sps_video_parameter_set_id);
if (current->sps_video_parameter_set_id == 0 && !h266->vps[0]) {
H266RawVPS *vps = ff_refstruct_allocz(sizeof(*vps));
if (!vps)
return AVERROR(ENOMEM);
vps->vps_max_layers_minus1 = 0;
vps->vps_independent_layer_flag[0] = 1;
vps->vps_layer_id[0] = current->nal_unit_header.nuh_layer_id;
h266->vps[0] = vps;
}
u(3, sps_max_sublayers_minus1, 0, VVC_MAX_SUBLAYERS - 1);
u(2, sps_chroma_format_idc, 0, 3);
u(2, sps_log2_ctu_size_minus5, 0, 3);
ctb_log2_size_y = current->sps_log2_ctu_size_minus5 + 5;
ctb_size_y = 1 << ctb_log2_size_y;
flag(sps_ptl_dpb_hrd_params_present_flag);
if (current->sps_ptl_dpb_hrd_params_present_flag) {
CHECK(FUNC(profile_tier_level) (ctx, rw, &current->profile_tier_level,
1, current->sps_max_sublayers_minus1));
}
flag(sps_gdr_enabled_flag);
flag(sps_ref_pic_resampling_enabled_flag);
if (current->sps_ref_pic_resampling_enabled_flag)
flag(sps_res_change_in_clvs_allowed_flag);
else
infer(sps_res_change_in_clvs_allowed_flag, 0);
ue(sps_pic_width_max_in_luma_samples, 1, VVC_MAX_WIDTH);
ue(sps_pic_height_max_in_luma_samples, 1, VVC_MAX_HEIGHT);
flag(sps_conformance_window_flag);
if (current->sps_conformance_window_flag) {
uint8_t sub_width_c = h266_sub_width_c[current->sps_chroma_format_idc];
uint8_t sub_height_c = h266_sub_height_c[current->sps_chroma_format_idc];
uint16_t width = current->sps_pic_width_max_in_luma_samples / sub_width_c;
uint16_t height = current->sps_pic_height_max_in_luma_samples / sub_height_c;
ue(sps_conf_win_left_offset, 0, width);
ue(sps_conf_win_right_offset, 0, width - current->sps_conf_win_left_offset);
ue(sps_conf_win_top_offset, 0, height);
ue(sps_conf_win_bottom_offset, 0, height - current->sps_conf_win_top_offset);
} else {
infer(sps_conf_win_left_offset, 0);
infer(sps_conf_win_right_offset, 0);
infer(sps_conf_win_top_offset, 0);
infer(sps_conf_win_bottom_offset, 0);
}
tmp_width_val = AV_CEIL_RSHIFT(current->sps_pic_width_max_in_luma_samples,
ctb_log2_size_y);
tmp_height_val = AV_CEIL_RSHIFT(current->sps_pic_height_max_in_luma_samples,
ctb_log2_size_y);
flag(sps_subpic_info_present_flag);
if (current->sps_subpic_info_present_flag) {
ue(sps_num_subpics_minus1, 0, VVC_MAX_SLICES - 1);
if (current->sps_num_subpics_minus1 > 0) {
flag(sps_independent_subpics_flag);
flag(sps_subpic_same_size_flag);
}
if (current->sps_num_subpics_minus1 > 0) {
int wlen = av_ceil_log2(tmp_width_val);
int hlen = av_ceil_log2(tmp_height_val);
infer(sps_subpic_ctu_top_left_x[0], 0);
infer(sps_subpic_ctu_top_left_y[0], 0);
if (current->sps_pic_width_max_in_luma_samples > ctb_size_y)
ubs(wlen, sps_subpic_width_minus1[0], 1, 0);
else
infer(sps_subpic_width_minus1[0], tmp_width_val - 1);
if (current->sps_pic_height_max_in_luma_samples > ctb_size_y)
ubs(hlen, sps_subpic_height_minus1[0], 1, 0);
else
infer(sps_subpic_height_minus1[0], tmp_height_val - 1);
if (!current->sps_independent_subpics_flag) {
flags(sps_subpic_treated_as_pic_flag[0], 1, 0);
flags(sps_loop_filter_across_subpic_enabled_flag[0], 1, 0);
} else {
infer(sps_subpic_treated_as_pic_flag[0], 1);
infer(sps_loop_filter_across_subpic_enabled_flag[0], 1);
}
for (i = 1; i <= current->sps_num_subpics_minus1; i++) {
if (!current->sps_subpic_same_size_flag) {
if (current->sps_pic_width_max_in_luma_samples > ctb_size_y)
ubs(wlen, sps_subpic_ctu_top_left_x[i], 1, i);
else
infer(sps_subpic_ctu_top_left_x[i], 0);
if (current->sps_pic_height_max_in_luma_samples >
ctb_size_y)
ubs(hlen, sps_subpic_ctu_top_left_y[i], 1, i);
else
infer(sps_subpic_ctu_top_left_y[i], 0);
if (i < current->sps_num_subpics_minus1 &&
current->sps_pic_width_max_in_luma_samples >
ctb_size_y) {
ubs(wlen, sps_subpic_width_minus1[i], 1, i);
} else {
infer(sps_subpic_width_minus1[i],
tmp_width_val -
current->sps_subpic_ctu_top_left_x[i] - 1);
}
if (i < current->sps_num_subpics_minus1 &&
current->sps_pic_height_max_in_luma_samples >
ctb_size_y) {
ubs(hlen, sps_subpic_height_minus1[i], 1, i);
} else {
infer(sps_subpic_height_minus1[i],
tmp_height_val -
current->sps_subpic_ctu_top_left_y[i] - 1);
}
} else {
int num_subpic_cols = tmp_width_val /
(current->sps_subpic_width_minus1[0] + 1);
if (tmp_width_val % (current->sps_subpic_width_minus1[0] + 1) ||
tmp_height_val % (current->sps_subpic_width_minus1[0] + 1) ||
current->sps_num_subpics_minus1 !=
(num_subpic_cols * tmp_height_val /
(current->sps_subpic_height_minus1[0] + 1) - 1))
return AVERROR_INVALIDDATA;
infer(sps_subpic_ctu_top_left_x[i],
(i % num_subpic_cols) *
(current->sps_subpic_width_minus1[0] + 1));
infer(sps_subpic_ctu_top_left_y[i],
(i / num_subpic_cols) *
(current->sps_subpic_height_minus1[0] + 1));
infer(sps_subpic_width_minus1[i],
current->sps_subpic_width_minus1[0]);
infer(sps_subpic_height_minus1[i],
current->sps_subpic_height_minus1[0]);
}
if (!current->sps_independent_subpics_flag) {
flags(sps_subpic_treated_as_pic_flag[i], 1, i);
flags(sps_loop_filter_across_subpic_enabled_flag[i], 1, i);
} else {
infer(sps_subpic_treated_as_pic_flag[i], 1);
infer(sps_loop_filter_across_subpic_enabled_flag[i], 0);
}
}
} else {
infer(sps_subpic_ctu_top_left_x[0], 0);
infer(sps_subpic_ctu_top_left_y[0], 0);
infer(sps_subpic_width_minus1[0], tmp_width_val - 1);
infer(sps_subpic_height_minus1[0], tmp_height_val - 1);
}
ue(sps_subpic_id_len_minus1, 0, 15);
if ((1 << (current->sps_subpic_id_len_minus1 + 1)) <
current->sps_num_subpics_minus1 + 1) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"sps_subpic_id_len_minus1(%d) is too small\n",
current->sps_subpic_id_len_minus1);
return AVERROR_INVALIDDATA;
}
flag(sps_subpic_id_mapping_explicitly_signalled_flag);
if (current->sps_subpic_id_mapping_explicitly_signalled_flag) {
flag(sps_subpic_id_mapping_present_flag);
if (current->sps_subpic_id_mapping_present_flag) {
for (i = 0; i <= current->sps_num_subpics_minus1; i++) {
ubs(current->sps_subpic_id_len_minus1 + 1,
sps_subpic_id[i], 1, i);
}
}
}
} else {
infer(sps_num_subpics_minus1, 0);
infer(sps_independent_subpics_flag, 1);
infer(sps_subpic_same_size_flag, 0);
infer(sps_subpic_id_mapping_explicitly_signalled_flag, 0);
infer(sps_subpic_ctu_top_left_x[0], 0);
infer(sps_subpic_ctu_top_left_y[0], 0);
infer(sps_subpic_width_minus1[0], tmp_width_val - 1);
infer(sps_subpic_height_minus1[0], tmp_height_val - 1);
}
ue(sps_bitdepth_minus8, 0, 8);
qp_bd_offset = 6 * current->sps_bitdepth_minus8;
flag(sps_entropy_coding_sync_enabled_flag);
flag(sps_entry_point_offsets_present_flag);
u(4, sps_log2_max_pic_order_cnt_lsb_minus4, 0, 12);
flag(sps_poc_msb_cycle_flag);
if (current->sps_poc_msb_cycle_flag)
ue(sps_poc_msb_cycle_len_minus1,
0, 32 - current->sps_log2_max_pic_order_cnt_lsb_minus4 - 5);
u(2, sps_num_extra_ph_bytes, 0, 2);
for (i = 0; i < (current->sps_num_extra_ph_bytes * 8); i++) {
flags(sps_extra_ph_bit_present_flag[i], 1, i);
}
u(2, sps_num_extra_sh_bytes, 0, 2);
for (i = 0; i < (current->sps_num_extra_sh_bytes * 8); i++) {
flags(sps_extra_sh_bit_present_flag[i], 1, i);
}
if (current->sps_ptl_dpb_hrd_params_present_flag) {
if (current->sps_max_sublayers_minus1 > 0)
flag(sps_sublayer_dpb_params_flag);
else
infer(sps_sublayer_dpb_params_flag, 0);
CHECK(FUNC(dpb_parameters) (ctx, rw, &current->sps_dpb_params,
current->sps_max_sublayers_minus1,
current->sps_sublayer_dpb_params_flag));
}
ue(sps_log2_min_luma_coding_block_size_minus2,
0, FFMIN(4, current->sps_log2_ctu_size_minus5 + 3));
min_cb_log2_size_y =
current->sps_log2_min_luma_coding_block_size_minus2 + 2;
flag(sps_partition_constraints_override_enabled_flag);
ue(sps_log2_diff_min_qt_min_cb_intra_slice_luma,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
min_qt_log2_size_intra_y =
current->sps_log2_diff_min_qt_min_cb_intra_slice_luma +
min_cb_log2_size_y;
ue(sps_max_mtt_hierarchy_depth_intra_slice_luma,
0, 2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (current->sps_max_mtt_hierarchy_depth_intra_slice_luma != 0) {
ue(sps_log2_diff_max_bt_min_qt_intra_slice_luma,
0, ctb_log2_size_y - min_qt_log2_size_intra_y);
ue(sps_log2_diff_max_tt_min_qt_intra_slice_luma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_y);
} else {
infer(sps_log2_diff_max_bt_min_qt_intra_slice_luma, 0);
infer(sps_log2_diff_max_tt_min_qt_intra_slice_luma, 0);
}
if (current->sps_chroma_format_idc != 0) {
flag(sps_qtbtt_dual_tree_intra_flag);
} else {
infer(sps_qtbtt_dual_tree_intra_flag, 0);
}
if (current->sps_qtbtt_dual_tree_intra_flag) {
ue(sps_log2_diff_min_qt_min_cb_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
ue(sps_max_mtt_hierarchy_depth_intra_slice_chroma,
0, 2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (current->sps_max_mtt_hierarchy_depth_intra_slice_chroma != 0) {
unsigned int min_qt_log2_size_intra_c =
current->sps_log2_diff_min_qt_min_cb_intra_slice_chroma +
min_cb_log2_size_y;
ue(sps_log2_diff_max_bt_min_qt_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_c);
ue(sps_log2_diff_max_tt_min_qt_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_c);
}
} else {
infer(sps_log2_diff_min_qt_min_cb_intra_slice_chroma, 0);
infer(sps_max_mtt_hierarchy_depth_intra_slice_chroma, 0);
}
if (current->sps_max_mtt_hierarchy_depth_intra_slice_chroma == 0) {
infer(sps_log2_diff_max_bt_min_qt_intra_slice_chroma, 0);
infer(sps_log2_diff_max_tt_min_qt_intra_slice_chroma, 0);
}
ue(sps_log2_diff_min_qt_min_cb_inter_slice,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
min_qt_log2_size_inter_y =
current->sps_log2_diff_min_qt_min_cb_inter_slice + min_cb_log2_size_y;
ue(sps_max_mtt_hierarchy_depth_inter_slice,
0, 2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (current->sps_max_mtt_hierarchy_depth_inter_slice != 0) {
ue(sps_log2_diff_max_bt_min_qt_inter_slice,
0, ctb_log2_size_y - min_qt_log2_size_inter_y);
ue(sps_log2_diff_max_tt_min_qt_inter_slice,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_inter_y);
} else {
infer(sps_log2_diff_max_bt_min_qt_inter_slice, 0);
infer(sps_log2_diff_max_tt_min_qt_inter_slice, 0);
}
if (ctb_size_y > 32)
flag(sps_max_luma_transform_size_64_flag);
else
infer(sps_max_luma_transform_size_64_flag, 0);
flag(sps_transform_skip_enabled_flag);
if (current->sps_transform_skip_enabled_flag) {
ue(sps_log2_transform_skip_max_size_minus2, 0, 3);
flag(sps_bdpcm_enabled_flag);
}
flag(sps_mts_enabled_flag);
if (current->sps_mts_enabled_flag) {
flag(sps_explicit_mts_intra_enabled_flag);
flag(sps_explicit_mts_inter_enabled_flag);
} else {
infer(sps_explicit_mts_intra_enabled_flag, 0);
infer(sps_explicit_mts_inter_enabled_flag, 0);
}
flag(sps_lfnst_enabled_flag);
if (current->sps_chroma_format_idc != 0) {
uint8_t num_qp_tables;
flag(sps_joint_cbcr_enabled_flag);
flag(sps_same_qp_table_for_chroma_flag);
num_qp_tables = current->sps_same_qp_table_for_chroma_flag ?
1 : (current->sps_joint_cbcr_enabled_flag ? 3 : 2);
for (i = 0; i < num_qp_tables; i++) {
ses(sps_qp_table_start_minus26[i], -26 - qp_bd_offset, 36, 1, i);
ues(sps_num_points_in_qp_table_minus1[i],
0, 36 - current->sps_qp_table_start_minus26[i], 1, i);
for (j = 0; j <= current->sps_num_points_in_qp_table_minus1[i]; j++) {
uint8_t max = MAX_UINT_BITS(8);
ues(sps_delta_qp_in_val_minus1[i][j], 0, max, 2, i, j);
ues(sps_delta_qp_diff_val[i][j], 0, max, 2, i, j);
}
}
} else {
infer(sps_joint_cbcr_enabled_flag, 0);
infer(sps_same_qp_table_for_chroma_flag, 0);
}
flag(sps_sao_enabled_flag);
flag(sps_alf_enabled_flag);
if (current->sps_alf_enabled_flag && current->sps_chroma_format_idc)
flag(sps_ccalf_enabled_flag);
else
infer(sps_ccalf_enabled_flag, 0);
flag(sps_lmcs_enabled_flag);
flag(sps_weighted_pred_flag);
flag(sps_weighted_bipred_flag);
flag(sps_long_term_ref_pics_flag);
if (current->sps_video_parameter_set_id > 0)
flag(sps_inter_layer_prediction_enabled_flag);
else
infer(sps_inter_layer_prediction_enabled_flag, 0);
flag(sps_idr_rpl_present_flag);
flag(sps_rpl1_same_as_rpl0_flag);
for (i = 0; i < (current->sps_rpl1_same_as_rpl0_flag ? 1 : 2); i++) {
ues(sps_num_ref_pic_lists[i], 0, VVC_MAX_REF_PIC_LISTS, 1, i);
for (j = 0; j < current->sps_num_ref_pic_lists[i]; j++)
CHECK(FUNC(ref_pic_list_struct) (ctx, rw,
&current->
sps_ref_pic_list_struct[i][j], i,
j, current));
}
if (current->sps_rpl1_same_as_rpl0_flag) {
current->sps_num_ref_pic_lists[1] = current->sps_num_ref_pic_lists[0];
for (j = 0; j < current->sps_num_ref_pic_lists[0]; j++)
memcpy(&current->sps_ref_pic_list_struct[1][j],
&current->sps_ref_pic_list_struct[0][j],
sizeof(current->sps_ref_pic_list_struct[0][j]));
}
flag(sps_ref_wraparound_enabled_flag);
flag(sps_temporal_mvp_enabled_flag);
if (current->sps_temporal_mvp_enabled_flag)
flag(sps_sbtmvp_enabled_flag);
else
infer(sps_sbtmvp_enabled_flag, 0);
flag(sps_amvr_enabled_flag);
flag(sps_bdof_enabled_flag);
if (current->sps_bdof_enabled_flag)
flag(sps_bdof_control_present_in_ph_flag);
else
infer(sps_bdof_control_present_in_ph_flag, 0);
flag(sps_smvd_enabled_flag);
flag(sps_dmvr_enabled_flag);
if (current->sps_dmvr_enabled_flag)
flag(sps_dmvr_control_present_in_ph_flag);
else
infer(sps_dmvr_control_present_in_ph_flag, 0);
flag(sps_mmvd_enabled_flag);
if (current->sps_mmvd_enabled_flag)
flag(sps_mmvd_fullpel_only_enabled_flag);
else
infer(sps_mmvd_fullpel_only_enabled_flag, 0);
ue(sps_six_minus_max_num_merge_cand, 0, 5);
max_num_merge_cand = 6 - current->sps_six_minus_max_num_merge_cand;
flag(sps_sbt_enabled_flag);
flag(sps_affine_enabled_flag);
if (current->sps_affine_enabled_flag) {
ue(sps_five_minus_max_num_subblock_merge_cand,
0, 5 - current->sps_sbtmvp_enabled_flag);
flag(sps_6param_affine_enabled_flag);
if (current->sps_amvr_enabled_flag)
flag(sps_affine_amvr_enabled_flag);
else
infer(sps_affine_amvr_enabled_flag, 0);
flag(sps_affine_prof_enabled_flag);
if (current->sps_affine_prof_enabled_flag)
flag(sps_prof_control_present_in_ph_flag);
else
infer(sps_prof_control_present_in_ph_flag, 0);
} else {
infer(sps_6param_affine_enabled_flag, 0);
infer(sps_affine_amvr_enabled_flag, 0);
infer(sps_affine_prof_enabled_flag, 0);
infer(sps_prof_control_present_in_ph_flag, 0);
}
flag(sps_bcw_enabled_flag);
flag(sps_ciip_enabled_flag);
if (max_num_merge_cand >= 2) {
flag(sps_gpm_enabled_flag);
if (current->sps_gpm_enabled_flag && max_num_merge_cand >= 3)
ue(sps_max_num_merge_cand_minus_max_num_gpm_cand,
0, max_num_merge_cand - 2);
} else {
infer(sps_gpm_enabled_flag, 0);
}
ue(sps_log2_parallel_merge_level_minus2, 0, ctb_log2_size_y - 2);
flag(sps_isp_enabled_flag);
flag(sps_mrl_enabled_flag);
flag(sps_mip_enabled_flag);
if (current->sps_chroma_format_idc != 0)
flag(sps_cclm_enabled_flag);
else
infer(sps_cclm_enabled_flag, 0);
if (current->sps_chroma_format_idc == 1) {
flag(sps_chroma_horizontal_collocated_flag);
flag(sps_chroma_vertical_collocated_flag);
} else {
infer(sps_chroma_horizontal_collocated_flag, 1);
infer(sps_chroma_vertical_collocated_flag, 1);
}
flag(sps_palette_enabled_flag);
if (current->sps_chroma_format_idc == 3 &&
!current->sps_max_luma_transform_size_64_flag)
flag(sps_act_enabled_flag);
else
infer(sps_act_enabled_flag, 0);
if (current->sps_transform_skip_enabled_flag ||
current->sps_palette_enabled_flag)
ue(sps_min_qp_prime_ts, 0, 8);
flag(sps_ibc_enabled_flag);
if (current->sps_ibc_enabled_flag)
ue(sps_six_minus_max_num_ibc_merge_cand, 0, 5);
flag(sps_ladf_enabled_flag);
if (current->sps_ladf_enabled_flag) {
ub(2, sps_num_ladf_intervals_minus2);
se(sps_ladf_lowest_interval_qp_offset, -63, 63);
for (i = 0; i < current->sps_num_ladf_intervals_minus2 + 1; i++) {
ses(sps_ladf_qp_offset[i], -63, 63, 1, i);
ues(sps_ladf_delta_threshold_minus1[i],
0, (2 << (8 + current->sps_bitdepth_minus8)) - 3, 1, i);
}
}
flag(sps_explicit_scaling_list_enabled_flag);
if (current->sps_lfnst_enabled_flag &&
current->sps_explicit_scaling_list_enabled_flag)
flag(sps_scaling_matrix_for_lfnst_disabled_flag);
if (current->sps_act_enabled_flag &&
current->sps_explicit_scaling_list_enabled_flag)
flag(sps_scaling_matrix_for_alternative_colour_space_disabled_flag);
else
infer(sps_scaling_matrix_for_alternative_colour_space_disabled_flag, 0);
if (current->sps_scaling_matrix_for_alternative_colour_space_disabled_flag)
flag(sps_scaling_matrix_designated_colour_space_flag);
flag(sps_dep_quant_enabled_flag);
flag(sps_sign_data_hiding_enabled_flag);
flag(sps_virtual_boundaries_enabled_flag);
if (current->sps_virtual_boundaries_enabled_flag) {
flag(sps_virtual_boundaries_present_flag);
if (current->sps_virtual_boundaries_present_flag) {
ue(sps_num_ver_virtual_boundaries,
0, current->sps_pic_width_max_in_luma_samples <= 8 ? 0 : 3);
for (i = 0; i < current->sps_num_ver_virtual_boundaries; i++)
ues(sps_virtual_boundary_pos_x_minus1[i],
0, (current->sps_pic_width_max_in_luma_samples + 7) / 8 - 2,
1, i);
ue(sps_num_hor_virtual_boundaries,
0, current->sps_pic_height_max_in_luma_samples <= 8 ? 0 : 3);
for (i = 0; i < current->sps_num_hor_virtual_boundaries; i++)
ues(sps_virtual_boundary_pos_y_minus1[i],
0, (current->sps_pic_height_max_in_luma_samples + 7) /
8 - 2, 1, i);
}
} else {
infer(sps_virtual_boundaries_present_flag, 0);
infer(sps_num_ver_virtual_boundaries, 0);
infer(sps_num_hor_virtual_boundaries, 0);
}
if (current->sps_ptl_dpb_hrd_params_present_flag) {
flag(sps_timing_hrd_params_present_flag);
if (current->sps_timing_hrd_params_present_flag) {
uint8_t first_sublayer;
CHECK(FUNC(general_timing_hrd_parameters) (ctx, rw,
&current->sps_general_timing_hrd_parameters));
if (current->sps_max_sublayers_minus1 > 0)
flag(sps_sublayer_cpb_params_present_flag);
else
infer(sps_sublayer_cpb_params_present_flag, 0);
first_sublayer = current->sps_sublayer_cpb_params_present_flag ?
0 : current->sps_max_sublayers_minus1;
CHECK(FUNC(ols_timing_hrd_parameters) (ctx, rw,
&current->sps_ols_timing_hrd_parameters, first_sublayer,
current->sps_max_sublayers_minus1,
&current->sps_general_timing_hrd_parameters));
}
}
flag(sps_field_seq_flag);
flag(sps_vui_parameters_present_flag);
if (current->sps_vui_parameters_present_flag) {
ue(sps_vui_payload_size_minus1, 0, 1023);
while (byte_alignment(rw) != 0)
fixed(1, sps_vui_alignment_zero_bit, 0);
CHECK(FUNC(vui_payload) (ctx, rw, &current->vui,
current->sps_vui_payload_size_minus1 + 1,
current->sps_chroma_format_idc));
} else {
CHECK(FUNC(vui_parameters_default) (ctx, rw, &current->vui));
}
flag(sps_extension_flag);
if (current->sps_extension_flag) {
flag(sps_range_extension_flag);
ub(7, sps_extension_7bits);
if (current->sps_range_extension_flag) {
CHECK(FUNC(sps_range_extension)(ctx, rw, current));
} else {
infer(sps_extended_precision_flag, 0);
infer(sps_ts_residual_coding_rice_present_in_sh_flag, 0);
infer(sps_rrc_rice_extension_flag, 0);
infer(sps_persistent_rice_adaptation_enabled_flag, 0);
infer(sps_reverse_last_sig_coeff_enabled_flag, 0);
}
} else {
infer(sps_range_extension_flag, 0);
infer(sps_extension_7bits, 0);
infer(sps_extended_precision_flag, 0);
infer(sps_ts_residual_coding_rice_present_in_sh_flag, 0);
infer(sps_rrc_rice_extension_flag, 0);
infer(sps_persistent_rice_adaptation_enabled_flag, 0);
infer(sps_reverse_last_sig_coeff_enabled_flag, 0);
}
if (current->sps_extension_7bits)
CHECK(FUNC(extension_data)(ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(pps) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawPPS *current)
{
CodedBitstreamH266Context *h266 = ctx->priv_data;
const H266RawSPS *sps;
int err, i;
unsigned int min_cb_size_y, divisor, ctb_size_y,
pic_width_in_ctbs_y, pic_height_in_ctbs_y;
uint8_t sub_width_c, sub_height_c, qp_bd_offset;
static const uint8_t h266_sub_width_c[] = {
1, 2, 2, 1
};
static const uint8_t h266_sub_height_c[] = {
1, 2, 1, 1
};
HEADER("Picture Parameter Set");
CHECK(FUNC(nal_unit_header) (ctx, rw,
&current->nal_unit_header, VVC_PPS_NUT));
ub(6, pps_pic_parameter_set_id);
ub(4, pps_seq_parameter_set_id);
sps = h266->sps[current->pps_seq_parameter_set_id];
if (!sps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
current->pps_seq_parameter_set_id);
return AVERROR_INVALIDDATA;
}
flag(pps_mixed_nalu_types_in_pic_flag);
ue(pps_pic_width_in_luma_samples,
1, sps->sps_pic_width_max_in_luma_samples);
ue(pps_pic_height_in_luma_samples,
1, sps->sps_pic_height_max_in_luma_samples);
min_cb_size_y = 1 << (sps->sps_log2_min_luma_coding_block_size_minus2 + 2);
divisor = FFMAX(min_cb_size_y, 8);
if (current->pps_pic_width_in_luma_samples % divisor ||
current->pps_pic_height_in_luma_samples % divisor) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Invalid dimensions: %ux%u not divisible "
"by %u, MinCbSizeY = %u.\n",
current->pps_pic_width_in_luma_samples,
current->pps_pic_height_in_luma_samples, divisor, min_cb_size_y);
return AVERROR_INVALIDDATA;
}
if (!sps->sps_res_change_in_clvs_allowed_flag &&
(current->pps_pic_width_in_luma_samples !=
sps->sps_pic_width_max_in_luma_samples ||
current->pps_pic_height_in_luma_samples !=
sps->sps_pic_height_max_in_luma_samples)) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Resoltuion change is not allowed, "
"in max resolution (%ux%u) mismatched with pps(%ux%u).\n",
sps->sps_pic_width_max_in_luma_samples,
sps->sps_pic_height_max_in_luma_samples,
current->pps_pic_width_in_luma_samples,
current->pps_pic_height_in_luma_samples);
return AVERROR_INVALIDDATA;
}
ctb_size_y = 1 << (sps->sps_log2_ctu_size_minus5 + 5);
if (sps->sps_ref_wraparound_enabled_flag) {
if ((ctb_size_y / min_cb_size_y + 1) >
(current->pps_pic_width_in_luma_samples / min_cb_size_y - 1)) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Invalid width(%u), ctb_size_y = %u, min_cb_size_y = %u.\n",
current->pps_pic_width_in_luma_samples,
ctb_size_y, min_cb_size_y);
return AVERROR_INVALIDDATA;
}
}
flag(pps_conformance_window_flag);
if (current->pps_pic_width_in_luma_samples ==
sps->sps_pic_width_max_in_luma_samples &&
current->pps_pic_height_in_luma_samples ==
sps->sps_pic_height_max_in_luma_samples &&
current->pps_conformance_window_flag) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Conformance window flag should not true.\n");
return AVERROR_INVALIDDATA;
}
sub_width_c = h266_sub_width_c[sps->sps_chroma_format_idc];
sub_height_c = h266_sub_height_c[sps->sps_chroma_format_idc];
if (current->pps_conformance_window_flag) {
ue(pps_conf_win_left_offset, 0, current->pps_pic_width_in_luma_samples);
ue(pps_conf_win_right_offset,
0, current->pps_pic_width_in_luma_samples);
ue(pps_conf_win_top_offset, 0, current->pps_pic_height_in_luma_samples);
ue(pps_conf_win_bottom_offset,
0, current->pps_pic_height_in_luma_samples);
if (sub_width_c *
(current->pps_conf_win_left_offset +
current->pps_conf_win_right_offset) >=
current->pps_pic_width_in_luma_samples ||
sub_height_c *
(current->pps_conf_win_top_offset +
current->pps_conf_win_bottom_offset) >=
current->pps_pic_height_in_luma_samples) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Invalid pps conformance window: (%u, %u, %u, %u), "
"resolution is %ux%u, sub wxh is %ux%u.\n",
current->pps_conf_win_left_offset,
current->pps_conf_win_right_offset,
current->pps_conf_win_top_offset,
current->pps_conf_win_bottom_offset,
current->pps_pic_width_in_luma_samples,
current->pps_pic_height_in_luma_samples,
sub_width_c, sub_height_c);
return AVERROR_INVALIDDATA;
}
} else {
if (current->pps_pic_width_in_luma_samples ==
sps->sps_pic_width_max_in_luma_samples &&
current->pps_pic_height_in_luma_samples ==
sps->sps_pic_height_max_in_luma_samples) {
infer(pps_conf_win_left_offset, sps->sps_conf_win_left_offset);
infer(pps_conf_win_right_offset, sps->sps_conf_win_right_offset);
infer(pps_conf_win_top_offset, sps->sps_conf_win_top_offset);
infer(pps_conf_win_bottom_offset, sps->sps_conf_win_bottom_offset);
} else {
infer(pps_conf_win_left_offset, 0);
infer(pps_conf_win_right_offset, 0);
infer(pps_conf_win_top_offset, 0);
infer(pps_conf_win_bottom_offset, 0);
}
}
flag(pps_scaling_window_explicit_signalling_flag);
if (!sps->sps_ref_pic_resampling_enabled_flag &&
current->pps_scaling_window_explicit_signalling_flag) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Invalid data: sps_ref_pic_resampling_enabled_flag is false, "
"but pps_scaling_window_explicit_signalling_flag is true.\n");
return AVERROR_INVALIDDATA;
}
if (current->pps_scaling_window_explicit_signalling_flag) {
se(pps_scaling_win_left_offset,
-current->pps_pic_width_in_luma_samples * 15 / sub_width_c,
current->pps_pic_width_in_luma_samples / sub_width_c);
se(pps_scaling_win_right_offset,
-current->pps_pic_width_in_luma_samples * 15 / sub_width_c,
current->pps_pic_width_in_luma_samples / sub_width_c);
se(pps_scaling_win_top_offset,
-current->pps_pic_height_in_luma_samples * 15 / sub_height_c,
current->pps_pic_height_in_luma_samples / sub_height_c);
se(pps_scaling_win_bottom_offset,
-current->pps_pic_height_in_luma_samples * 15 / sub_height_c,
current->pps_pic_height_in_luma_samples / sub_height_c);
} else {
infer(pps_scaling_win_left_offset, current->pps_conf_win_left_offset);
infer(pps_scaling_win_right_offset, current->pps_conf_win_right_offset);
infer(pps_scaling_win_top_offset, current->pps_conf_win_top_offset);
infer(pps_scaling_win_bottom_offset, current->pps_conf_win_bottom_offset);
}
flag(pps_output_flag_present_flag);
flag(pps_no_pic_partition_flag);
flag(pps_subpic_id_mapping_present_flag);
if (current->pps_subpic_id_mapping_present_flag) {
if (!current->pps_no_pic_partition_flag) {
ue(pps_num_subpics_minus1,
sps->sps_num_subpics_minus1, sps->sps_num_subpics_minus1);
} else {
infer(pps_num_subpics_minus1, 0);
}
ue(pps_subpic_id_len_minus1, sps->sps_subpic_id_len_minus1,
sps->sps_subpic_id_len_minus1);
for (i = 0; i <= current->pps_num_subpics_minus1; i++) {
ubs(sps->sps_subpic_id_len_minus1 + 1, pps_subpic_id[i], 1, i);
}
}
for (i = 0; i <= sps->sps_num_subpics_minus1; i++) {
if (sps->sps_subpic_id_mapping_explicitly_signalled_flag)
current->sub_pic_id_val[i] = current->pps_subpic_id_mapping_present_flag
? current->pps_subpic_id[i]
: sps->sps_subpic_id[i];
else
current->sub_pic_id_val[i] = i;
}
pic_width_in_ctbs_y = AV_CEIL_RSHIFT
(current->pps_pic_width_in_luma_samples, (sps->sps_log2_ctu_size_minus5 + 5));
pic_height_in_ctbs_y = AV_CEIL_RSHIFT(
current->pps_pic_height_in_luma_samples,(sps->sps_log2_ctu_size_minus5 + 5));
if (!current->pps_no_pic_partition_flag) {
unsigned int exp_tile_width = 0, exp_tile_height = 0;
unsigned int unified_size, remaining_size;
u(2, pps_log2_ctu_size_minus5,
sps->sps_log2_ctu_size_minus5, sps->sps_log2_ctu_size_minus5);
ue(pps_num_exp_tile_columns_minus1,
0, FFMIN(pic_width_in_ctbs_y - 1, VVC_MAX_TILE_COLUMNS - 1));
ue(pps_num_exp_tile_rows_minus1,
0, FFMIN(pic_height_in_ctbs_y - 1, VVC_MAX_TILE_ROWS - 1));
for (i = 0; i <= current->pps_num_exp_tile_columns_minus1; i++) {
ues(pps_tile_column_width_minus1[i],
0, pic_width_in_ctbs_y - exp_tile_width - 1, 1, i);
exp_tile_width += current->pps_tile_column_width_minus1[i] + 1;
}
for (i = 0; i <= current->pps_num_exp_tile_rows_minus1; i++) {
ues(pps_tile_row_height_minus1[i],
0, pic_height_in_ctbs_y - exp_tile_height - 1, 1, i);
exp_tile_height += current->pps_tile_row_height_minus1[i] + 1;
}
remaining_size = pic_width_in_ctbs_y;
for (i = 0; i <= current->pps_num_exp_tile_columns_minus1; i++) {
if (current->pps_tile_column_width_minus1[i] >= remaining_size) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Tile column width(%d) exceeds picture width\n",i);
return AVERROR_INVALIDDATA;
}
current->col_width_val[i] = current->pps_tile_column_width_minus1[i] + 1;
remaining_size -= (current->pps_tile_column_width_minus1[i] + 1);
}
unified_size = current->pps_tile_column_width_minus1[i - 1] + 1;
while (remaining_size > 0) {
if (current->num_tile_columns > VVC_MAX_TILE_COLUMNS) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"NumTileColumns(%d) > than VVC_MAX_TILE_COLUMNS(%d)\n",
current->num_tile_columns, VVC_MAX_TILE_COLUMNS);
return AVERROR_INVALIDDATA;
}
unified_size = FFMIN(remaining_size, unified_size);
current->col_width_val[i] = unified_size;
remaining_size -= unified_size;
i++;
}
current->num_tile_columns = i;
if (current->num_tile_columns > VVC_MAX_TILE_COLUMNS) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"NumTileColumns(%d) > than VVC_MAX_TILE_COLUMNS(%d)\n",
current->num_tile_columns, VVC_MAX_TILE_COLUMNS);
return AVERROR_INVALIDDATA;
}
remaining_size = pic_height_in_ctbs_y;
for (i = 0; i <= current->pps_num_exp_tile_rows_minus1; i++) {
if (current->pps_tile_row_height_minus1[i] >= remaining_size) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Tile row height(%d) exceeds picture height\n",i);
return AVERROR_INVALIDDATA;
}
current->row_height_val[i] = current->pps_tile_row_height_minus1[i] + 1;
remaining_size -= (current->pps_tile_row_height_minus1[i] + 1);
}
unified_size = current->pps_tile_row_height_minus1[i - 1] + 1;
while (remaining_size > 0) {
unified_size = FFMIN(remaining_size, unified_size);
current->row_height_val[i] = unified_size;
remaining_size -= unified_size;
i++;
}
current->num_tile_rows=i;
if (current->num_tile_rows > VVC_MAX_TILE_ROWS) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"NumTileRows(%d) > than VVC_MAX_TILE_ROWS(%d)\n",
current->num_tile_rows, VVC_MAX_TILE_ROWS);
return AVERROR_INVALIDDATA;
}
current->num_tiles_in_pic = current->num_tile_columns *
current->num_tile_rows;
if (current->num_tiles_in_pic > VVC_MAX_TILES_PER_AU) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"NumTilesInPic(%d) > than VVC_MAX_TILES_PER_AU(%d)\n",
current->num_tiles_in_pic, VVC_MAX_TILES_PER_AU);
return AVERROR_INVALIDDATA;
}
if (current->num_tiles_in_pic > 1) {
flag(pps_loop_filter_across_tiles_enabled_flag);
flag(pps_rect_slice_flag);
} else {
infer(pps_loop_filter_across_tiles_enabled_flag, 0);
infer(pps_rect_slice_flag, 1);
}
if (current->pps_rect_slice_flag)
flag(pps_single_slice_per_subpic_flag);
else
infer(pps_single_slice_per_subpic_flag, 1);
if (current->pps_rect_slice_flag &&
!current->pps_single_slice_per_subpic_flag) {
int j;
uint16_t tile_idx = 0, tile_x, tile_y, ctu_x, ctu_y;
uint16_t slice_top_left_ctu_x[VVC_MAX_SLICES];
uint16_t slice_top_left_ctu_y[VVC_MAX_SLICES];
ue(pps_num_slices_in_pic_minus1, 0, VVC_MAX_SLICES - 1);
if (current->pps_num_slices_in_pic_minus1 > 1)
flag(pps_tile_idx_delta_present_flag);
else
infer(pps_tile_idx_delta_present_flag, 0);
for (i = 0; i < current->pps_num_slices_in_pic_minus1; i++) {
tile_x = tile_idx % current->num_tile_columns;
tile_y = tile_idx / current->num_tile_columns;
if (tile_x != current->num_tile_columns - 1) {
ues(pps_slice_width_in_tiles_minus1[i],
0, current->num_tile_columns - 1, 1, i);
} else {
infer(pps_slice_width_in_tiles_minus1[i], 0);
}
if (tile_y != current->num_tile_rows - 1 &&
(current->pps_tile_idx_delta_present_flag || tile_x == 0)) {
ues(pps_slice_height_in_tiles_minus1[i],
0, current->num_tile_rows - 1, 1, i);
} else {
if (tile_y == current->num_tile_rows - 1)
infer(pps_slice_height_in_tiles_minus1[i], 0);
else
infer(pps_slice_height_in_tiles_minus1[i],
current->pps_slice_height_in_tiles_minus1[i - 1]);
}
ctu_x = ctu_y = 0;
for (j = 0; j < tile_x; j++) {
ctu_x += current->col_width_val[j];
}
for (j = 0; j < tile_y; j++) {
ctu_y += current->row_height_val[j];
}
if (current->pps_slice_width_in_tiles_minus1[i] == 0 &&
current->pps_slice_height_in_tiles_minus1[i] == 0 &&
current->row_height_val[tile_y] > 1) {
int num_slices_in_tile,
uniform_slice_height, remaining_height_in_ctbs_y;
remaining_height_in_ctbs_y =
current->row_height_val[tile_y];
ues(pps_num_exp_slices_in_tile[i],
0, current->row_height_val[tile_y] - 1, 1, i);
if (current->pps_num_exp_slices_in_tile[i] == 0) {
num_slices_in_tile = 1;
current->slice_height_in_ctus[i] = current->row_height_val[tile_y];
slice_top_left_ctu_x[i] = ctu_x;
slice_top_left_ctu_y[i] = ctu_y;
} else {
uint16_t slice_height_in_ctus;
for (j = 0; j < current->pps_num_exp_slices_in_tile[i];
j++) {
ues(pps_exp_slice_height_in_ctus_minus1[i][j], 0,
current->row_height_val[tile_y] - 1, 2,
i, j);
slice_height_in_ctus =
current->
pps_exp_slice_height_in_ctus_minus1[i][j] + 1;
current->slice_height_in_ctus[i + j] =
slice_height_in_ctus;
slice_top_left_ctu_x[i + j] = ctu_x;
slice_top_left_ctu_y[i + j] = ctu_y;
ctu_y += slice_height_in_ctus;
remaining_height_in_ctbs_y -= slice_height_in_ctus;
}
uniform_slice_height = 1 +
(j == 0 ? current->row_height_val[tile_y] - 1:
current->pps_exp_slice_height_in_ctus_minus1[i][j-1]);
while (remaining_height_in_ctbs_y > uniform_slice_height) {
current->slice_height_in_ctus[i + j] =
uniform_slice_height;
slice_top_left_ctu_x[i + j] = ctu_x;
slice_top_left_ctu_y[i + j] = ctu_y;
ctu_y += uniform_slice_height;
remaining_height_in_ctbs_y -= uniform_slice_height;
j++;
}
if (remaining_height_in_ctbs_y > 0) {
current->slice_height_in_ctus[i + j] =
remaining_height_in_ctbs_y;
slice_top_left_ctu_x[i + j] = ctu_x;
slice_top_left_ctu_y[i + j] = ctu_y;
j++;
}
num_slices_in_tile = j;
}
i += num_slices_in_tile - 1;
} else {
uint16_t height = 0;
infer(pps_num_exp_slices_in_tile[i], 0);
for (j = 0;
j <= current->pps_slice_height_in_tiles_minus1[i];
j++) {
height +=
current->row_height_val[tile_y + j];
}
current->slice_height_in_ctus[i] = height;
slice_top_left_ctu_x[i] = ctu_x;
slice_top_left_ctu_y[i] = ctu_y;
}
if (i < current->pps_num_slices_in_pic_minus1) {
if (current->pps_tile_idx_delta_present_flag) {
// Two conditions must be met:
// 1. −NumTilesInPic + 1 <= pps_tile_idx_delta_val[i] <= NumTilesInPic − 1
// 2. 0 <= tile_idx + pps_tile_idx_delta_val[i] <= NumTilesInPic − 1
// Combining these conditions yields: -tile_idx <= pps_tile_idx_delta_val[i] <= NumTilesInPic - 1 - tile_idx
ses(pps_tile_idx_delta_val[i],
-tile_idx, current->num_tiles_in_pic - 1 - tile_idx, 1, i);
if (current->pps_tile_idx_delta_val[i] == 0) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"pps_tile_idx_delta_val[i] shall not be equal to 0.\n");
}
tile_idx += current->pps_tile_idx_delta_val[i];
} else {
infer(pps_tile_idx_delta_val[i], 0);
tile_idx +=
current->pps_slice_width_in_tiles_minus1[i] + 1;
if (tile_idx % current->num_tile_columns == 0) {
tile_idx +=
current->pps_slice_height_in_tiles_minus1[i] *
current->num_tile_columns;
}
}
}
}
if (i == current->pps_num_slices_in_pic_minus1) {
uint16_t height = 0;
tile_x = tile_idx % current->num_tile_columns;
tile_y = tile_idx / current->num_tile_columns;
if (tile_y >= current->num_tile_rows)
return AVERROR_INVALIDDATA;
ctu_x = 0, ctu_y = 0;
for (j = 0; j < tile_x; j++) {
ctu_x += current->col_width_val[j];
}
for (j = 0; j < tile_y; j++) {
ctu_y += current->row_height_val[j];
}
slice_top_left_ctu_x[i] = ctu_x;
slice_top_left_ctu_y[i] = ctu_y;
current->pps_slice_width_in_tiles_minus1[i] =
current->num_tile_columns - tile_x - 1;
current->pps_slice_height_in_tiles_minus1[i] =
current->num_tile_rows - tile_y - 1;
for (j = 0; j <= current->pps_slice_height_in_tiles_minus1[i];
j++) {
height +=
current->row_height_val[tile_y + j];
}
current->slice_height_in_ctus[i] = height;
infer(pps_num_exp_slices_in_tile[i], 0);
}
//now, we got all slice information, let's resolve NumSlicesInSubpic
for (i = 0; i <= sps->sps_num_subpics_minus1; i++) {
current->num_slices_in_subpic[i] = 0;
for (j = 0; j <= current->pps_num_slices_in_pic_minus1; j++) {
uint16_t pos_x = 0, pos_y = 0;
pos_x = slice_top_left_ctu_x[j];
pos_y = slice_top_left_ctu_y[j];
if ((pos_x >= sps->sps_subpic_ctu_top_left_x[i]) &&
(pos_x <
sps->sps_subpic_ctu_top_left_x[i] +
sps->sps_subpic_width_minus1[i] + 1) &&
(pos_y >= sps->sps_subpic_ctu_top_left_y[i]) &&
(pos_y < sps->sps_subpic_ctu_top_left_y[i] +
sps->sps_subpic_height_minus1[i] + 1)) {
current->num_slices_in_subpic[i]++;
}
}
}
} else {
if (current->pps_no_pic_partition_flag)
infer(pps_num_slices_in_pic_minus1, 0);
else if (current->pps_single_slice_per_subpic_flag) {
for (i = 0; i <= sps->sps_num_subpics_minus1; i++)
current->num_slices_in_subpic[i] = 1;
infer(pps_num_slices_in_pic_minus1,
sps->sps_num_subpics_minus1);
}
// else?
}
if (!current->pps_rect_slice_flag ||
current->pps_single_slice_per_subpic_flag ||
current->pps_num_slices_in_pic_minus1 > 0)
flag(pps_loop_filter_across_slices_enabled_flag);
else
infer(pps_loop_filter_across_slices_enabled_flag, 0);
} else {
infer(pps_num_exp_tile_columns_minus1, 0);
infer(pps_tile_column_width_minus1[0], pic_width_in_ctbs_y - 1);
infer(pps_num_exp_tile_rows_minus1, 0);
infer(pps_tile_row_height_minus1[0], pic_height_in_ctbs_y - 1);
current->col_width_val[0] = pic_width_in_ctbs_y;
current->row_height_val[0] = pic_height_in_ctbs_y;
current->num_tile_columns = 1;
current->num_tile_rows = 1;
current->num_tiles_in_pic = 1;
}
flag(pps_cabac_init_present_flag);
for (i = 0; i < 2; i++)
ues(pps_num_ref_idx_default_active_minus1[i], 0, 14, 1, i);
flag(pps_rpl1_idx_present_flag);
flag(pps_weighted_pred_flag);
flag(pps_weighted_bipred_flag);
flag(pps_ref_wraparound_enabled_flag);
if (current->pps_ref_wraparound_enabled_flag) {
ue(pps_pic_width_minus_wraparound_offset,
0, (current->pps_pic_width_in_luma_samples / min_cb_size_y)
- (ctb_size_y / min_cb_size_y) - 2);
}
qp_bd_offset = 6 * sps->sps_bitdepth_minus8;
se(pps_init_qp_minus26, -(26 + qp_bd_offset), 37);
flag(pps_cu_qp_delta_enabled_flag);
flag(pps_chroma_tool_offsets_present_flag);
if (current->pps_chroma_tool_offsets_present_flag) {
se(pps_cb_qp_offset, -12, 12);
se(pps_cr_qp_offset, -12, 12);
flag(pps_joint_cbcr_qp_offset_present_flag);
if (current->pps_joint_cbcr_qp_offset_present_flag)
se(pps_joint_cbcr_qp_offset_value, -12, 12);
else
infer(pps_joint_cbcr_qp_offset_value, 0);
flag(pps_slice_chroma_qp_offsets_present_flag);
flag(pps_cu_chroma_qp_offset_list_enabled_flag);
if (current->pps_cu_chroma_qp_offset_list_enabled_flag) {
ue(pps_chroma_qp_offset_list_len_minus1, 0, 5);
for (i = 0; i <= current->pps_chroma_qp_offset_list_len_minus1; i++) {
ses(pps_cb_qp_offset_list[i], -12, 12, 1, i);
ses(pps_cr_qp_offset_list[i], -12, 12, 1, i);
if (current->pps_joint_cbcr_qp_offset_present_flag)
ses(pps_joint_cbcr_qp_offset_list[i], -12, 12, 1, i);
else
infer(pps_joint_cbcr_qp_offset_list[i], 0);
}
}
} else {
infer(pps_cb_qp_offset, 0);
infer(pps_cr_qp_offset, 0);
infer(pps_joint_cbcr_qp_offset_present_flag, 0);
infer(pps_joint_cbcr_qp_offset_value, 0);
infer(pps_slice_chroma_qp_offsets_present_flag, 0);
infer(pps_cu_chroma_qp_offset_list_enabled_flag, 0);
}
flag(pps_deblocking_filter_control_present_flag);
if (current->pps_deblocking_filter_control_present_flag) {
flag(pps_deblocking_filter_override_enabled_flag);
flag(pps_deblocking_filter_disabled_flag);
if (!current->pps_no_pic_partition_flag &&
current->pps_deblocking_filter_override_enabled_flag)
flag(pps_dbf_info_in_ph_flag);
else
infer(pps_dbf_info_in_ph_flag, 0);
if (!current->pps_deblocking_filter_disabled_flag) {
se(pps_luma_beta_offset_div2, -12, 12);
se(pps_luma_tc_offset_div2, -12, 12);
if (current->pps_chroma_tool_offsets_present_flag) {
se(pps_cb_beta_offset_div2, -12, 12);
se(pps_cb_tc_offset_div2, -12, 12);
se(pps_cr_beta_offset_div2, -12, 12);
se(pps_cr_tc_offset_div2, -12, 12);
} else {
infer(pps_cb_beta_offset_div2,
current->pps_luma_beta_offset_div2);
infer(pps_cb_tc_offset_div2, current->pps_luma_tc_offset_div2);
infer(pps_cr_beta_offset_div2,
current->pps_luma_beta_offset_div2);
infer(pps_cr_tc_offset_div2, current->pps_luma_tc_offset_div2);
}
} else {
infer(pps_luma_beta_offset_div2, 0);
infer(pps_luma_tc_offset_div2, 0);
infer(pps_cb_beta_offset_div2, 0);
infer(pps_cb_tc_offset_div2, 0);
infer(pps_cr_beta_offset_div2, 0);
infer(pps_cr_tc_offset_div2, 0);
}
} else {
infer(pps_deblocking_filter_override_enabled_flag, 0);
infer(pps_deblocking_filter_disabled_flag, 0);
infer(pps_dbf_info_in_ph_flag, 0);
infer(pps_luma_beta_offset_div2, 0);
infer(pps_luma_tc_offset_div2, 0);
infer(pps_cb_beta_offset_div2, 0);
infer(pps_cb_tc_offset_div2, 0);
infer(pps_cr_beta_offset_div2, 0);
infer(pps_cr_tc_offset_div2, 0);
}
if (!current->pps_no_pic_partition_flag) {
flag(pps_rpl_info_in_ph_flag);
flag(pps_sao_info_in_ph_flag);
flag(pps_alf_info_in_ph_flag);
if ((current->pps_weighted_pred_flag ||
current->pps_weighted_bipred_flag) &&
current->pps_rpl_info_in_ph_flag)
flag(pps_wp_info_in_ph_flag);
flag(pps_qp_delta_info_in_ph_flag);
}
flag(pps_picture_header_extension_present_flag);
flag(pps_slice_header_extension_present_flag);
flag(pps_extension_flag);
if (current->pps_extension_flag)
CHECK(FUNC(extension_data) (ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(alf_data)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawAPS *current)
{
int err, j, k;
flag(alf_luma_filter_signal_flag);
if (current->aps_chroma_present_flag) {
flag(alf_chroma_filter_signal_flag);
flag(alf_cc_cb_filter_signal_flag);
flag(alf_cc_cr_filter_signal_flag);
} else {
infer(alf_chroma_filter_signal_flag, 0);
infer(alf_cc_cb_filter_signal_flag, 0);
infer(alf_cc_cr_filter_signal_flag, 0);
}
if (current->alf_luma_filter_signal_flag) {
flag(alf_luma_clip_flag);
ue(alf_luma_num_filters_signalled_minus1, 0, VVC_NUM_ALF_FILTERS - 1);
if (current->alf_luma_num_filters_signalled_minus1 > 0) {
unsigned int bits = av_ceil_log2(current->alf_luma_num_filters_signalled_minus1 + 1);
for (int filt_idx = 0; filt_idx < VVC_NUM_ALF_FILTERS; filt_idx++)
us(bits, alf_luma_coeff_delta_idx[filt_idx],
0, current->alf_luma_num_filters_signalled_minus1,
1, filt_idx);
}
for (int sf_idx = 0; sf_idx <= current->alf_luma_num_filters_signalled_minus1; sf_idx++)
for (j = 0; j < 12; j++) {
ues(alf_luma_coeff_abs[sf_idx][j], 0, 128, 2, sf_idx, j);
if (current->alf_luma_coeff_abs[sf_idx][j])
ubs(1, alf_luma_coeff_sign[sf_idx][j], 2, sf_idx, j);
else
infer(alf_luma_coeff_sign[sf_idx][j], 0);
}
} else {
infer(alf_luma_clip_flag, 0);
infer(alf_luma_num_filters_signalled_minus1, 0);
}
for (int sf_idx = 0; sf_idx <= current->alf_luma_num_filters_signalled_minus1; sf_idx++) {
for (j = 0; j < 12; j++) {
if (current->alf_luma_clip_flag)
ubs(2, alf_luma_clip_idx[sf_idx][j], 2, sf_idx, j);
else
infer(alf_luma_clip_idx[sf_idx][j], 0);
}
}
if (current->alf_chroma_filter_signal_flag) {
flag(alf_chroma_clip_flag);
ue(alf_chroma_num_alt_filters_minus1, 0, 7);
} else {
infer(alf_chroma_clip_flag, 0);
infer(alf_chroma_num_alt_filters_minus1, 0);
}
for (int alt_idx = 0; alt_idx <= current->alf_chroma_num_alt_filters_minus1; alt_idx++) {
for (j = 0; j < 6; j++) {
if (current->alf_chroma_filter_signal_flag)
ues(alf_chroma_coeff_abs[alt_idx][j], 0, 128, 2, alt_idx, j);
else
infer(alf_chroma_coeff_abs[alt_idx][j], 0);
if (current->alf_chroma_coeff_abs[alt_idx][j] > 0)
ubs(1, alf_chroma_coeff_sign[alt_idx][j], 2, alt_idx, j);
else
infer(alf_chroma_coeff_sign[alt_idx][j], 0);
}
for (j = 0; j < 6; j++) {
if (current->alf_chroma_clip_flag)
ubs(2, alf_chroma_clip_idx[alt_idx][j], 2, alt_idx, j);
else
infer(alf_chroma_clip_idx[alt_idx][j], 0);
}
}
if (current->alf_cc_cb_filter_signal_flag)
ue(alf_cc_cb_filters_signalled_minus1, 0, 3);
else
infer(alf_cc_cb_filters_signalled_minus1, 0);
for (k = 0; k <= current->alf_cc_cb_filters_signalled_minus1; k++) {
for (j = 0; j < 7; j++) {
if (current->alf_cc_cb_filter_signal_flag)
ubs(3, alf_cc_cb_mapped_coeff_abs[k][j], 2, k, j);
else
infer(alf_cc_cb_mapped_coeff_abs[k][j], 0);
if (current->alf_cc_cb_mapped_coeff_abs[k][j])
ubs(1, alf_cc_cb_coeff_sign[k][j], 2, k, j);
else
infer(alf_cc_cb_coeff_sign[k][j], 0);
}
}
if (current->alf_cc_cr_filter_signal_flag)
ue(alf_cc_cr_filters_signalled_minus1, 0, 3);
else
infer(alf_cc_cr_filters_signalled_minus1, 0);
for (k = 0; k < current->alf_cc_cr_filters_signalled_minus1 + 1; k++) {
for (j = 0; j < 7; j++) {
if (current->alf_cc_cr_filter_signal_flag)
ubs(3, alf_cc_cr_mapped_coeff_abs[k][j], 2, k, j);
else
infer(alf_cc_cr_mapped_coeff_abs[k][j], 0);
if (current->alf_cc_cr_mapped_coeff_abs[k][j])
ubs(1, alf_cc_cr_coeff_sign[k][j], 2, k, j);
else
infer(alf_cc_cr_coeff_sign[k][j], 0);
}
}
return 0;
}
static int FUNC(lmcs_data)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawAPS *current)
{
int err, i, lmcs_max_bin_idx;
ue(lmcs_min_bin_idx, 0, 15);
ue(lmcs_delta_max_bin_idx, 0, 15);
ue(lmcs_delta_cw_prec_minus1, 0, 14);
lmcs_max_bin_idx = 15 - current->lmcs_delta_max_bin_idx;
if (lmcs_max_bin_idx < current->lmcs_min_bin_idx)
return AVERROR_INVALIDDATA;
for (i = current->lmcs_min_bin_idx; i <= lmcs_max_bin_idx; i++) {
ubs(current->lmcs_delta_cw_prec_minus1 + 1, lmcs_delta_abs_cw[i], 1, i);
if (current->lmcs_delta_abs_cw[i] > 0)
flags(lmcs_delta_sign_cw_flag[i], 1, i);
else
infer(lmcs_delta_sign_cw_flag[i], 0);
}
if (current->aps_chroma_present_flag) {
ub(3, lmcs_delta_abs_crs);
if (current->lmcs_delta_abs_crs > 0)
flag(lmcs_delta_sign_crs_flag);
else
infer(lmcs_delta_sign_crs_flag, 0);
} else {
infer(lmcs_delta_abs_crs, 0);
infer(lmcs_delta_sign_crs_flag, 0);
}
return 0;
}
static int FUNC(scaling_list_data)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawAPS *current)
{
// 7.4.3.4, deriving DiagScanOrder
static const uint8_t diag_scan_order[64][2] = {
{ 0, 0, }, { 0, 1, }, { 1, 0, }, { 0, 2, }, { 1, 1, }, { 2, 0, }, { 0, 3, }, { 1, 2, },
{ 2, 1, }, { 3, 0, }, { 0, 4, }, { 1, 3, }, { 2, 2, }, { 3, 1, }, { 4, 0, }, { 0, 5, },
{ 1, 4, }, { 2, 3, }, { 3, 2, }, { 4, 1, }, { 5, 0, }, { 0, 6, }, { 1, 5, }, { 2, 4, },
{ 3, 3, }, { 4, 2, }, { 5, 1, }, { 6, 0, }, { 0, 7, }, { 1, 6, }, { 2, 5, }, { 3, 4, },
{ 4, 3, }, { 5, 2, }, { 6, 1, }, { 7, 0, }, { 1, 7, }, { 2, 6, }, { 3, 5, }, { 4, 4, },
{ 5, 3, }, { 6, 2, }, { 7, 1, }, { 2, 7, }, { 3, 6, }, { 4, 5, }, { 5, 4, }, { 6, 3, },
{ 7, 2, }, { 3, 7, }, { 4, 6, }, { 5, 5, }, { 6, 4, }, { 7, 3, }, { 4, 7, }, { 5, 6, },
{ 6, 5, }, { 7, 4, }, { 5, 7, }, { 6, 6, }, { 7, 5, }, { 6, 7, }, { 7, 6, }, { 7, 7, }, };
int err;
for (int id = 0; id < 28; id ++) {
if (current->aps_chroma_present_flag || id % 3 == 2 || id == 27) {
flags(scaling_list_copy_mode_flag[id], 1, id);
if (!current->scaling_list_copy_mode_flag[id])
flags(scaling_list_pred_mode_flag[id], 1, id);
else
infer(scaling_list_pred_mode_flag[id], 0);
if ((current->scaling_list_copy_mode_flag[id] ||
current->scaling_list_pred_mode_flag[id]) &&
id != 0 && id != 2 && id != 8) {
int max_id_delta = (id < 2) ? id : ((id < 8) ? (id - 2) : (id - 8));
ues(scaling_list_pred_id_delta[id], 0, max_id_delta, 1, id);
}
if (!current->scaling_list_copy_mode_flag[id]) {
int matrix_size = id < 2 ? 2 : (id < 8 ? 4 : 8);
if (id > 13) {
int idx = id - 14;
ses(scaling_list_dc_coef[idx], -128, 127, 1, idx);
}
for (int i = 0; i < matrix_size * matrix_size; i++) {
int x = diag_scan_order[i][0];
int y = diag_scan_order[i][1];
if (!(id > 25 && x >= 4 && y >= 4))
ses(scaling_list_delta_coef[id][i], -128, 127, 2, id, i);
}
} else if (id > 13) {
int idx = id - 14;
infer(scaling_list_dc_coef[idx], 0);
}
} else {
infer(scaling_list_copy_mode_flag[id], 1);
infer(scaling_list_pred_mode_flag[id], 0);
}
}
return 0;
}
static int FUNC(aps)(CodedBitstreamContext *ctx, RWContext *rw,
H266RawAPS *current, int prefix)
{
int aps_id_max = MAX_UINT_BITS(5);
int err;
if (prefix)
HEADER("Prefix Adaptation parameter set");
else
HEADER("Suffix Adaptation parameter set");
CHECK(FUNC(nal_unit_header)(ctx, rw, &current->nal_unit_header,
prefix ? VVC_PREFIX_APS_NUT
: VVC_SUFFIX_APS_NUT));
ub(3, aps_params_type);
if (current->aps_params_type == VVC_ASP_TYPE_ALF ||
current->aps_params_type == VVC_ASP_TYPE_SCALING)
aps_id_max = 7;
else if (current->aps_params_type == VVC_ASP_TYPE_LMCS)
aps_id_max = 3;
u(5, aps_adaptation_parameter_set_id, 0, aps_id_max);
flag(aps_chroma_present_flag);
if (current->aps_params_type == VVC_ASP_TYPE_ALF)
CHECK(FUNC(alf_data)(ctx, rw, current));
else if(current->aps_params_type == VVC_ASP_TYPE_LMCS)
CHECK(FUNC(lmcs_data)(ctx, rw, current));
else if (current->aps_params_type == VVC_ASP_TYPE_SCALING)
CHECK(FUNC(scaling_list_data)(ctx, rw, current));
flag(aps_extension_flag);
if (current->aps_extension_flag)
CHECK(FUNC(extension_data) (ctx, rw, &current->extension_data));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(aud) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawAUD *current)
{
int err;
HEADER("Access Unit Delimiter");
CHECK(FUNC(nal_unit_header) (ctx, rw,
&current->nal_unit_header, VVC_AUD_NUT));
flag(aud_irap_or_gdr_flag);
u(3, aud_pic_type, 0, 2);
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(pred_weight_table) (CodedBitstreamContext *ctx, RWContext *rw,
const H266RawSPS *sps,
const H266RawPPS *pps,
const H266RefPicLists *ref_lists,
uint8_t num_ref_idx_active[2],
H266RawPredWeightTable *current)
{
int err, i, j;
ue(luma_log2_weight_denom, 0, 7);
if (sps->sps_chroma_format_idc != 0) {
se(delta_chroma_log2_weight_denom,
-current->luma_log2_weight_denom,
7 - current->luma_log2_weight_denom);
} else {
infer(delta_chroma_log2_weight_denom, 0);
}
if (pps->pps_wp_info_in_ph_flag) {
ue(num_l0_weights, 0,
FFMIN(15, ref_lists->rpl_ref_list[0].num_ref_entries));
infer(num_weights_l0, current->num_l0_weights);
} else {
infer(num_weights_l0, num_ref_idx_active[0]);
}
for (i = 0; i < current->num_weights_l0; i++) {
flags(luma_weight_l0_flag[i], 1, i);
}
if (sps->sps_chroma_format_idc != 0) {
for (i = 0; i < current->num_weights_l0; i++)
flags(chroma_weight_l0_flag[i], 1, i);
}
for (i = 0; i < current->num_weights_l0; i++) {
if (current->luma_weight_l0_flag[i]) {
ses(delta_luma_weight_l0[i], -128, 127, 1, i);
ses(luma_offset_l0[i], -128, 127, 1, i);
} else {
infer(delta_luma_weight_l0[i], 0);
infer(luma_offset_l0[i], 0);
}
if (current->chroma_weight_l0_flag[i]) {
for (j = 0; j < 2; j++) {
ses(delta_chroma_weight_l0[i][j], -128, 127, 2, i, j);
ses(delta_chroma_offset_l0[i][j], -4 * 128, 4 * 127, 2, i, j);
}
}
}
if (pps->pps_weighted_bipred_flag &&
ref_lists->rpl_ref_list[1].num_ref_entries > 0) {
if (pps->pps_wp_info_in_ph_flag) {
ue(num_l1_weights, 0,
FFMIN(15, ref_lists->rpl_ref_list[1].num_ref_entries));
infer(num_weights_l1, current->num_l1_weights);
} else {
infer(num_weights_l1, num_ref_idx_active[1]);
}
} else {
infer(num_weights_l1, 0);
}
for (i = 0; i < current->num_weights_l1; i++)
flags(luma_weight_l1_flag[i], 1, i);
if (sps->sps_chroma_format_idc != 0) {
for (i = 0; i < current->num_weights_l1; i++)
flags(chroma_weight_l1_flag[i], 1, i);
}
for (i = 0; i < current->num_weights_l1; i++) {
if (current->luma_weight_l1_flag[i]) {
ses(delta_luma_weight_l1[i], -128, 127, 1, i);
ses(luma_offset_l1[i], -128, 127, 1, i);
} else {
infer(delta_luma_weight_l1[i], 0);
infer(luma_offset_l1[i], 0);
}
if (current->chroma_weight_l1_flag[i]) {
for (j = 0; j < 2; j++) {
ses(delta_chroma_weight_l1[i][j], -128, 127, 2, i, j);
ses(delta_chroma_offset_l1[i][j], -4 * 128, 4 * 127, 2, i, j);
}
}
}
return 0;
}
static int FUNC(picture_header) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawPictureHeader *current) {
CodedBitstreamH266Context *h266 = ctx->priv_data;
const H266RawVPS *vps;
const H266RawSPS *sps;
const H266RawPPS *pps;
int err, i;
unsigned int ctb_log2_size_y, min_cb_log2_size_y,
min_qt_log2_size_intra_y, min_qt_log2_size_inter_y;
uint8_t qp_bd_offset;
flag(ph_gdr_or_irap_pic_flag);
flag(ph_non_ref_pic_flag);
if (current->ph_gdr_or_irap_pic_flag)
flag(ph_gdr_pic_flag);
else
infer(ph_gdr_pic_flag, 0);
flag(ph_inter_slice_allowed_flag);
if (current->ph_inter_slice_allowed_flag)
flag(ph_intra_slice_allowed_flag);
else
infer(ph_intra_slice_allowed_flag, 1);
ue(ph_pic_parameter_set_id, 0, VVC_MAX_PPS_COUNT - 1);
pps = h266->pps[current->ph_pic_parameter_set_id];
if (!pps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
current->ph_pic_parameter_set_id);
return AVERROR_INVALIDDATA;
}
sps = h266->sps[pps->pps_seq_parameter_set_id];
if (!sps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
pps->pps_seq_parameter_set_id);
return AVERROR_INVALIDDATA;
}
vps = h266->vps[sps->sps_video_parameter_set_id];
if (!vps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "VPS id %d not available.\n",
sps->sps_video_parameter_set_id);
return AVERROR_INVALIDDATA;
}
ub(sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4, ph_pic_order_cnt_lsb);
if (current->ph_gdr_pic_flag)
ue(ph_recovery_poc_cnt, 0,
1 << (sps->sps_log2_max_pic_order_cnt_lsb_minus4 + 4));
for (i = 0; i < sps->sps_num_extra_ph_bytes * 8; i++) {
if (sps->sps_extra_ph_bit_present_flag[i])
flags(ph_extra_bit[i], 1, i);
}
if (sps->sps_poc_msb_cycle_flag) {
flag(ph_poc_msb_cycle_present_flag);
if (current->ph_poc_msb_cycle_present_flag)
ub(sps->sps_poc_msb_cycle_len_minus1 + 1, ph_poc_msb_cycle_val);
}
if (sps->sps_alf_enabled_flag && pps->pps_alf_info_in_ph_flag) {
flag(ph_alf_enabled_flag);
if (current->ph_alf_enabled_flag) {
ub(3, ph_num_alf_aps_ids_luma);
for (i = 0; i < current->ph_num_alf_aps_ids_luma; i++)
ubs(3, ph_alf_aps_id_luma[i], 1, i);
if (sps->sps_chroma_format_idc != 0) {
flag(ph_alf_cb_enabled_flag);
flag(ph_alf_cr_enabled_flag);
} else {
infer(ph_alf_cb_enabled_flag, 0);
infer(ph_alf_cr_enabled_flag, 0);
}
if (current->ph_alf_cb_enabled_flag
|| current->ph_alf_cr_enabled_flag) {
ub(3, ph_alf_aps_id_chroma);
}
if (sps->sps_ccalf_enabled_flag) {
flag(ph_alf_cc_cb_enabled_flag);
if (current->ph_alf_cc_cb_enabled_flag)
ub(3, ph_alf_cc_cb_aps_id);
flag(ph_alf_cc_cr_enabled_flag);
if (current->ph_alf_cc_cr_enabled_flag)
ub(3, ph_alf_cc_cr_aps_id);
}
}
} else {
infer(ph_alf_enabled_flag, 0);
}
if (sps->sps_lmcs_enabled_flag) {
flag(ph_lmcs_enabled_flag);
if (current->ph_lmcs_enabled_flag) {
ub(2, ph_lmcs_aps_id);
if (sps->sps_chroma_format_idc != 0)
flag(ph_chroma_residual_scale_flag);
else
infer(ph_chroma_residual_scale_flag, 0);
}
} else {
infer(ph_lmcs_enabled_flag, 0);
infer(ph_chroma_residual_scale_flag, 0);
}
if (sps->sps_explicit_scaling_list_enabled_flag) {
flag(ph_explicit_scaling_list_enabled_flag);
if (current->ph_explicit_scaling_list_enabled_flag) {
//todo: check the ph_scaling_list_aps_id range, when aps ready
ub(3, ph_scaling_list_aps_id);
}
} else {
infer(ph_explicit_scaling_list_enabled_flag, 0);
}
if (sps->sps_virtual_boundaries_enabled_flag &&
!sps->sps_virtual_boundaries_present_flag) {
flag(ph_virtual_boundaries_present_flag);
if (current->ph_virtual_boundaries_present_flag) {
ue(ph_num_ver_virtual_boundaries,
0, pps->pps_pic_width_in_luma_samples <= 8 ? 0 : 3);
for (i = 0; i < current->ph_num_ver_virtual_boundaries; i++) {
ues(ph_virtual_boundary_pos_x_minus1[i],
0, (pps->pps_pic_width_in_luma_samples + 7) / 8 - 2, 1, i);
}
ue(ph_num_hor_virtual_boundaries,
0, pps->pps_pic_height_in_luma_samples <= 8 ? 0 : 3);
for (i = 0; i < current->ph_num_hor_virtual_boundaries; i++) {
ues(ph_virtual_boundary_pos_y_minus1[i],
0, (pps->pps_pic_height_in_luma_samples + 7) / 8 - 2, 1, i);
}
} else {
infer(ph_num_ver_virtual_boundaries, 0);
infer(ph_num_hor_virtual_boundaries, 0);
}
}
if (pps->pps_output_flag_present_flag && !current->ph_non_ref_pic_flag)
flag(ph_pic_output_flag);
else
infer(ph_pic_output_flag, 1);
if (pps->pps_rpl_info_in_ph_flag) {
CHECK(FUNC(ref_pic_lists)
(ctx, rw, sps, pps, &current->ph_ref_pic_lists));
}
if (sps->sps_partition_constraints_override_enabled_flag)
flag(ph_partition_constraints_override_flag);
else
infer(ph_partition_constraints_override_flag, 0);
ctb_log2_size_y = sps->sps_log2_ctu_size_minus5 + 5;
min_cb_log2_size_y = sps->sps_log2_min_luma_coding_block_size_minus2 + 2;
if (current->ph_intra_slice_allowed_flag) {
if (current->ph_partition_constraints_override_flag) {
ue(ph_log2_diff_min_qt_min_cb_intra_slice_luma,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
ue(ph_max_mtt_hierarchy_depth_intra_slice_luma,
0, 2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (current->ph_max_mtt_hierarchy_depth_intra_slice_luma != 0) {
min_qt_log2_size_intra_y =
current->ph_log2_diff_min_qt_min_cb_intra_slice_luma +
min_cb_log2_size_y;
ue(ph_log2_diff_max_bt_min_qt_intra_slice_luma,
0, (sps->sps_qtbtt_dual_tree_intra_flag ?
FFMIN(6, ctb_log2_size_y) :
ctb_log2_size_y) - min_qt_log2_size_intra_y);
ue(ph_log2_diff_max_tt_min_qt_intra_slice_luma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_y);
} else {
infer(ph_log2_diff_max_bt_min_qt_intra_slice_luma,
sps->sps_log2_diff_max_bt_min_qt_intra_slice_luma);
infer(ph_log2_diff_max_tt_min_qt_intra_slice_luma,
sps->sps_log2_diff_max_tt_min_qt_intra_slice_luma);
}
if (sps->sps_qtbtt_dual_tree_intra_flag) {
ue(ph_log2_diff_min_qt_min_cb_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
ue(ph_max_mtt_hierarchy_depth_intra_slice_chroma,
0, 2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (sps->sps_max_mtt_hierarchy_depth_intra_slice_chroma != 0) {
unsigned int min_qt_log2_size_intra_c =
sps->sps_log2_diff_min_qt_min_cb_intra_slice_chroma +
min_cb_log2_size_y;
ue(ph_log2_diff_max_bt_min_qt_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_c);
ue(ph_log2_diff_max_tt_min_qt_intra_slice_chroma,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_intra_c);
} else {
infer(ph_log2_diff_max_bt_min_qt_intra_slice_chroma,
sps->sps_log2_diff_max_bt_min_qt_intra_slice_chroma);
infer(ph_log2_diff_max_tt_min_qt_intra_slice_chroma,
sps->sps_log2_diff_max_tt_min_qt_intra_slice_chroma);
}
}
} else {
infer(ph_log2_diff_min_qt_min_cb_intra_slice_luma,
sps->sps_log2_diff_min_qt_min_cb_intra_slice_luma);
infer(ph_max_mtt_hierarchy_depth_intra_slice_luma,
sps->sps_max_mtt_hierarchy_depth_intra_slice_luma);
infer(ph_log2_diff_max_bt_min_qt_intra_slice_luma,
sps->sps_log2_diff_max_bt_min_qt_intra_slice_luma);
infer(ph_log2_diff_max_tt_min_qt_intra_slice_luma,
sps->sps_log2_diff_max_tt_min_qt_intra_slice_luma);
infer(ph_log2_diff_min_qt_min_cb_intra_slice_chroma,
sps->sps_log2_diff_min_qt_min_cb_intra_slice_chroma);
infer(ph_max_mtt_hierarchy_depth_intra_slice_chroma,
sps->sps_max_mtt_hierarchy_depth_intra_slice_chroma);
infer(ph_log2_diff_max_bt_min_qt_intra_slice_chroma,
sps->sps_log2_diff_max_bt_min_qt_intra_slice_chroma);
infer(ph_log2_diff_max_tt_min_qt_intra_slice_chroma,
sps->sps_log2_diff_max_tt_min_qt_intra_slice_chroma);
}
min_qt_log2_size_intra_y =
current->ph_log2_diff_min_qt_min_cb_intra_slice_luma +
min_cb_log2_size_y;
if (pps->pps_cu_qp_delta_enabled_flag)
ue(ph_cu_qp_delta_subdiv_intra_slice, 0,
2 * (ctb_log2_size_y - min_qt_log2_size_intra_y +
current->ph_max_mtt_hierarchy_depth_intra_slice_luma));
else
infer(ph_cu_qp_delta_subdiv_intra_slice, 0);
if (pps->pps_cu_chroma_qp_offset_list_enabled_flag)
ue(ph_cu_chroma_qp_offset_subdiv_intra_slice, 0,
2 * (ctb_log2_size_y - min_qt_log2_size_intra_y +
current->ph_max_mtt_hierarchy_depth_intra_slice_luma));
else
infer(ph_cu_chroma_qp_offset_subdiv_intra_slice, 0);
}
if (current->ph_inter_slice_allowed_flag) {
if (current->ph_partition_constraints_override_flag) {
ue(ph_log2_diff_min_qt_min_cb_inter_slice,
0, FFMIN(6, ctb_log2_size_y) - min_cb_log2_size_y);
min_qt_log2_size_inter_y =
current->ph_log2_diff_min_qt_min_cb_inter_slice +
min_cb_log2_size_y;
ue(ph_max_mtt_hierarchy_depth_inter_slice, 0,
2 * (ctb_log2_size_y - min_cb_log2_size_y));
if (current->ph_max_mtt_hierarchy_depth_inter_slice != 0) {
ue(ph_log2_diff_max_bt_min_qt_inter_slice,
0, ctb_log2_size_y - min_qt_log2_size_inter_y);
ue(ph_log2_diff_max_tt_min_qt_inter_slice,
0, FFMIN(6, ctb_log2_size_y) - min_qt_log2_size_inter_y);
}
} else {
infer(ph_log2_diff_min_qt_min_cb_inter_slice,
sps->sps_log2_diff_min_qt_min_cb_inter_slice);
min_qt_log2_size_inter_y =
current->ph_log2_diff_min_qt_min_cb_inter_slice +
min_cb_log2_size_y;
infer(ph_max_mtt_hierarchy_depth_inter_slice,
sps->sps_max_mtt_hierarchy_depth_inter_slice);
infer(ph_log2_diff_max_bt_min_qt_inter_slice,
sps->sps_log2_diff_max_bt_min_qt_inter_slice);
infer(ph_log2_diff_max_tt_min_qt_inter_slice,
sps->sps_log2_diff_max_tt_min_qt_inter_slice);
}
if (pps->pps_cu_qp_delta_enabled_flag)
ue(ph_cu_qp_delta_subdiv_inter_slice, 0,
2 * (ctb_log2_size_y - min_qt_log2_size_inter_y +
current->ph_max_mtt_hierarchy_depth_inter_slice));
else
infer(ph_cu_qp_delta_subdiv_inter_slice, 0);
if (pps->pps_cu_chroma_qp_offset_list_enabled_flag)
ue(ph_cu_chroma_qp_offset_subdiv_inter_slice, 0,
2 * (ctb_log2_size_y - min_qt_log2_size_inter_y +
current->ph_max_mtt_hierarchy_depth_inter_slice));
else
infer(ph_cu_chroma_qp_offset_subdiv_inter_slice, 0);
if (sps->sps_temporal_mvp_enabled_flag) {
flag(ph_temporal_mvp_enabled_flag);
if (current->ph_temporal_mvp_enabled_flag &&
pps->pps_rpl_info_in_ph_flag) {
if (current->ph_ref_pic_lists.rpl_ref_list[1].num_ref_entries > 0)
flag(ph_collocated_from_l0_flag);
else
infer(ph_collocated_from_l0_flag, 1);
if ((current->ph_collocated_from_l0_flag &&
current->ph_ref_pic_lists.rpl_ref_list[0].num_ref_entries > 1)
|| (!current->ph_collocated_from_l0_flag &&
current->ph_ref_pic_lists.rpl_ref_list[1].num_ref_entries > 1)) {
unsigned int idx =
current->ph_collocated_from_l0_flag ? 0 : 1;
ue(ph_collocated_ref_idx, 0,
current->ph_ref_pic_lists.rpl_ref_list[idx].
num_ref_entries - 1);
} else {
infer(ph_collocated_ref_idx, 0);
}
}
}
if (sps->sps_mmvd_fullpel_only_enabled_flag)
flag(ph_mmvd_fullpel_only_flag);
else
infer(ph_mmvd_fullpel_only_flag, 0);
if (!pps->pps_rpl_info_in_ph_flag ||
current->ph_ref_pic_lists.rpl_ref_list[1].num_ref_entries > 0) {
flag(ph_mvd_l1_zero_flag);
if (sps->sps_bdof_control_present_in_ph_flag) {
flag(ph_bdof_disabled_flag);
} else {
if (!sps->sps_bdof_control_present_in_ph_flag)
infer(ph_bdof_disabled_flag,
1 - sps->sps_bdof_enabled_flag);
else
infer(ph_bdof_disabled_flag, 1);
}
if (sps->sps_dmvr_control_present_in_ph_flag) {
flag(ph_dmvr_disabled_flag);
} else {
if (!sps->sps_dmvr_control_present_in_ph_flag)
infer(ph_dmvr_disabled_flag,
1 - sps->sps_dmvr_enabled_flag);
else
infer(ph_dmvr_disabled_flag, 1);
}
} else {
infer(ph_mvd_l1_zero_flag, 1);
}
if (sps->sps_prof_control_present_in_ph_flag)
flag(ph_prof_disabled_flag);
else
infer(ph_prof_disabled_flag, !sps->sps_affine_prof_enabled_flag);
if ((pps->pps_weighted_pred_flag ||
pps->pps_weighted_bipred_flag) && pps->pps_wp_info_in_ph_flag) {
// if pps->pps_wp_info_in_ph_fla == 1
// pred_weight_table will not use num_ref_idx_active
uint8_t num_ref_idx_active[2] = { 0, 0 };
CHECK(FUNC(pred_weight_table)
(ctx, rw, sps, pps, &current->ph_ref_pic_lists,
num_ref_idx_active, &current->ph_pred_weight_table));
}
}
qp_bd_offset = 6 * sps->sps_bitdepth_minus8;
if (pps->pps_qp_delta_info_in_ph_flag)
se(ph_qp_delta, -qp_bd_offset - (26 + pps->pps_init_qp_minus26),
63 - (26 + pps->pps_init_qp_minus26));
if (sps->sps_joint_cbcr_enabled_flag)
flag(ph_joint_cbcr_sign_flag);
else
infer(ph_joint_cbcr_sign_flag, 0);
if (sps->sps_sao_enabled_flag && pps->pps_sao_info_in_ph_flag) {
flag(ph_sao_luma_enabled_flag);
if (sps->sps_chroma_format_idc != 0)
flag(ph_sao_chroma_enabled_flag);
else
infer(ph_sao_chroma_enabled_flag, 0);
} else {
infer(ph_sao_luma_enabled_flag, 0);
infer(ph_sao_chroma_enabled_flag, 0);
}
if (pps->pps_dbf_info_in_ph_flag)
flag(ph_deblocking_params_present_flag);
else
infer(ph_deblocking_params_present_flag, 0);
if (current->ph_deblocking_params_present_flag) {
if (!pps->pps_deblocking_filter_disabled_flag) {
flag(ph_deblocking_filter_disabled_flag);
if (!current->ph_deblocking_filter_disabled_flag) {
se(ph_luma_beta_offset_div2, -12, 12);
se(ph_luma_tc_offset_div2, -12, 12);
if (pps->pps_chroma_tool_offsets_present_flag) {
se(ph_cb_beta_offset_div2, -12, 12);
se(ph_cb_tc_offset_div2, -12, 12);
se(ph_cr_beta_offset_div2, -12, 12);
se(ph_cr_tc_offset_div2, -12, 12);
} else {
infer(ph_cb_beta_offset_div2,
current->ph_luma_beta_offset_div2);
infer(ph_cb_tc_offset_div2,
current->ph_luma_tc_offset_div2);
infer(ph_cr_beta_offset_div2,
current->ph_luma_beta_offset_div2);
infer(ph_cr_tc_offset_div2,
current->ph_luma_tc_offset_div2);
}
}
} else {
infer(ph_deblocking_filter_disabled_flag, 0);
}
} else {
infer(ph_deblocking_filter_disabled_flag, pps->pps_deblocking_filter_disabled_flag);
if (!current->ph_deblocking_filter_disabled_flag) {
infer(ph_luma_beta_offset_div2, pps->pps_luma_beta_offset_div2);
infer(ph_luma_tc_offset_div2, pps->pps_luma_tc_offset_div2);
infer(ph_cb_beta_offset_div2, pps->pps_cb_beta_offset_div2);
infer(ph_cb_tc_offset_div2, pps->pps_cb_tc_offset_div2);
infer(ph_cr_beta_offset_div2, pps->pps_cr_beta_offset_div2);
infer(ph_cr_tc_offset_div2, pps->pps_cr_tc_offset_div2);
}
}
if (pps->pps_picture_header_extension_present_flag) {
ue(ph_extension_length, 0, 256);
for (i = 0; i < current->ph_extension_length; i++)
us(8, ph_extension_data_byte[i], 0x00, 0xff, 1, i);
}
return 0;
}
static int FUNC(ph) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawPH *current)
{
int err;
HEADER("Picture Header");
CHECK(FUNC(nal_unit_header) (ctx, rw, &current->nal_unit_header, VVC_PH_NUT));
CHECK(FUNC(picture_header) (ctx, rw, &current->ph_picture_header));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
static int FUNC(slice_header) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawSliceHeader *current)
{
CodedBitstreamH266Context *h266 = ctx->priv_data;
const H266RawSPS *sps;
const H266RawPPS *pps;
const H266RawPictureHeader *ph;
const H266RefPicLists *ref_pic_lists;
int err, i;
uint8_t nal_unit_type, qp_bd_offset;
uint16_t num_slices_in_subpic;
HEADER("Slice Header");
CHECK(FUNC(nal_unit_header) (ctx, rw, &current->nal_unit_header, -1));
flag(sh_picture_header_in_slice_header_flag);
if (current->sh_picture_header_in_slice_header_flag) {
// 7.4.8 if sh_picture_header_in_slice_header_flag is true, we do not have a PH NAL unit
CHECK(FUNC(picture_header) (ctx, rw, &current->sh_picture_header));
ph = &current->sh_picture_header;
} else {
ph = h266->ph;
if (!ph) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"Picture header not available.\n");
return AVERROR_INVALIDDATA;
}
}
pps = h266->pps[ph->ph_pic_parameter_set_id];
if (!pps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "PPS id %d not available.\n",
ph->ph_pic_parameter_set_id);
return AVERROR_INVALIDDATA;
}
sps = h266->sps[pps->pps_seq_parameter_set_id];
if (!sps) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "SPS id %d not available.\n",
pps->pps_seq_parameter_set_id);
return AVERROR_INVALIDDATA;
}
if (sps->sps_subpic_info_present_flag) {
ub(sps->sps_subpic_id_len_minus1 + 1, sh_subpic_id);
for (i = 0; i <= sps->sps_num_subpics_minus1; i++) {
if (pps->sub_pic_id_val[i] == current->sh_subpic_id) {
current->curr_subpic_idx = i;
break;
}
}
if (i > sps->sps_num_subpics_minus1) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "invalid CurrSubpicIdx %d\n", i);
return AVERROR_INVALIDDATA;
}
} else {
current->curr_subpic_idx = 0;
}
num_slices_in_subpic = pps->num_slices_in_subpic[current->curr_subpic_idx];
if ((pps->pps_rect_slice_flag && num_slices_in_subpic > 1) ||
(!pps->pps_rect_slice_flag && pps->num_tiles_in_pic > 1)) {
unsigned int bits, max;
if (!pps->pps_rect_slice_flag) {
bits = av_ceil_log2(pps->num_tiles_in_pic);
max = pps->num_tiles_in_pic - 1;
} else {
bits = av_ceil_log2(num_slices_in_subpic);
max = num_slices_in_subpic - 1;
}
u(bits, sh_slice_address, 0, max);
} else {
infer(sh_slice_address, 0);
}
for (i = 0; i < sps->sps_num_extra_sh_bytes * 8; i++) {
if (sps->sps_extra_sh_bit_present_flag[i])
flags(sh_extra_bit[i], 1, i);
}
if (!pps->pps_rect_slice_flag &&
pps->num_tiles_in_pic - current->sh_slice_address > 1)
ue(sh_num_tiles_in_slice_minus1, 0, pps->num_tiles_in_pic - 1);
else
infer(sh_num_tiles_in_slice_minus1, 0);
if (ph->ph_inter_slice_allowed_flag)
ue(sh_slice_type, 0, 2);
else
infer(sh_slice_type, 2);
nal_unit_type = current->nal_unit_header.nal_unit_type;
if (nal_unit_type == VVC_IDR_W_RADL || nal_unit_type == VVC_IDR_N_LP ||
nal_unit_type == VVC_CRA_NUT || nal_unit_type == VVC_GDR_NUT)
flag(sh_no_output_of_prior_pics_flag);
if (sps->sps_alf_enabled_flag) {
if (!pps->pps_alf_info_in_ph_flag) {
flag(sh_alf_enabled_flag);
if (current->sh_alf_enabled_flag) {
ub(3, sh_num_alf_aps_ids_luma);
for (i = 0; i < current->sh_num_alf_aps_ids_luma; i++)
ubs(3, sh_alf_aps_id_luma[i], 1, i);
if (sps->sps_chroma_format_idc != 0) {
flag(sh_alf_cb_enabled_flag);
flag(sh_alf_cr_enabled_flag);
}
if (current->sh_alf_cb_enabled_flag ||
current->sh_alf_cr_enabled_flag) {
ub(3, sh_alf_aps_id_chroma);
}
if (sps->sps_ccalf_enabled_flag) {
flag(sh_alf_cc_cb_enabled_flag);
if (current->sh_alf_cc_cb_enabled_flag)
ub(3, sh_alf_cc_cb_aps_id);
flag(sh_alf_cc_cr_enabled_flag);
if (current->sh_alf_cc_cr_enabled_flag)
ub(3, sh_alf_cc_cr_aps_id);
}
}
} else {
infer(sh_alf_enabled_flag, ph->ph_alf_enabled_flag);
if (current->sh_alf_enabled_flag) {
infer(sh_num_alf_aps_ids_luma, ph->ph_num_alf_aps_ids_luma);
for (i = 0; i < current->sh_num_alf_aps_ids_luma; i++)
infer(sh_alf_aps_id_luma[i], ph->ph_alf_aps_id_luma[i]);
infer(sh_alf_cb_enabled_flag, ph->ph_alf_cb_enabled_flag);
infer(sh_alf_cr_enabled_flag, ph->ph_alf_cr_enabled_flag);
if (current->sh_alf_cb_enabled_flag ||current->sh_alf_cr_enabled_flag)
infer(sh_alf_aps_id_chroma, ph->ph_alf_aps_id_chroma);
if (sps->sps_ccalf_enabled_flag) {
infer(sh_alf_cc_cb_enabled_flag, ph->ph_alf_cc_cb_enabled_flag);
if (current->sh_alf_cc_cb_enabled_flag)
infer(sh_alf_cc_cb_aps_id, ph->ph_alf_cc_cb_aps_id);
infer(sh_alf_cc_cr_enabled_flag, ph->ph_alf_cc_cr_enabled_flag);
if (current->sh_alf_cc_cr_enabled_flag)
infer(sh_alf_cc_cr_aps_id, ph->ph_alf_cc_cr_aps_id);
}
}
}
}
if (current->sh_picture_header_in_slice_header_flag) {
infer(sh_lmcs_used_flag, ph->ph_lmcs_enabled_flag);
infer(sh_explicit_scaling_list_used_flag,
ph->ph_explicit_scaling_list_enabled_flag);
} else {
if (ph->ph_lmcs_enabled_flag)
flag(sh_lmcs_used_flag);
else
infer(sh_lmcs_used_flag, 0);
if (ph->ph_explicit_scaling_list_enabled_flag)
flag(sh_explicit_scaling_list_used_flag);
else
infer(sh_explicit_scaling_list_used_flag, 0);
}
if (!pps->pps_rpl_info_in_ph_flag &&
((nal_unit_type != VVC_IDR_W_RADL &&
nal_unit_type != VVC_IDR_N_LP) || sps->sps_idr_rpl_present_flag)) {
CHECK(FUNC(ref_pic_lists)
(ctx, rw, sps, pps, &current->sh_ref_pic_lists));
ref_pic_lists = &current->sh_ref_pic_lists;
} else {
ref_pic_lists = &ph->ph_ref_pic_lists;
}
if ((current->sh_slice_type != VVC_SLICE_TYPE_I &&
ref_pic_lists->rpl_ref_list[0].num_ref_entries > 1) ||
(current->sh_slice_type == VVC_SLICE_TYPE_B &&
ref_pic_lists->rpl_ref_list[1].num_ref_entries > 1)) {
flag(sh_num_ref_idx_active_override_flag);
if (current->sh_num_ref_idx_active_override_flag) {
for (i = 0;
i < (current->sh_slice_type == VVC_SLICE_TYPE_B ? 2 : 1); i++)
if (ref_pic_lists->rpl_ref_list[i].num_ref_entries > 1)
ues(sh_num_ref_idx_active_minus1[i], 0, 14, 1, i);
else
infer(sh_num_ref_idx_active_minus1[i], 0);
}
} else {
infer(sh_num_ref_idx_active_override_flag, 1);
}
for (i = 0; i < 2; i++) {
if (current->sh_slice_type == VVC_SLICE_TYPE_B ||
(current->sh_slice_type == VVC_SLICE_TYPE_P && i == 0)) {
if (current->sh_num_ref_idx_active_override_flag) {
current->num_ref_idx_active[i] = current->sh_num_ref_idx_active_minus1[i] + 1;
} else {
current->num_ref_idx_active[i] =
FFMIN(ref_pic_lists->rpl_ref_list[i].num_ref_entries,
pps->pps_num_ref_idx_default_active_minus1[i] + 1);
}
} else {
current->num_ref_idx_active[i] = 0;
}
}
if (current->sh_slice_type != VVC_SLICE_TYPE_I) {
if (pps->pps_cabac_init_present_flag)
flag(sh_cabac_init_flag);
else
infer(sh_cabac_init_flag, 0);
if (ph->ph_temporal_mvp_enabled_flag) {
if (!pps->pps_rpl_info_in_ph_flag) {
if (current->sh_slice_type == VVC_SLICE_TYPE_B)
flag(sh_collocated_from_l0_flag);
else
infer(sh_collocated_from_l0_flag, 1);
if ((current->sh_collocated_from_l0_flag &&
current->num_ref_idx_active[0] > 1) ||
(!current->sh_collocated_from_l0_flag &&
current->num_ref_idx_active[1] > 1)) {
unsigned int idx = current->sh_collocated_from_l0_flag ? 0 : 1;
ue(sh_collocated_ref_idx, 0, current->num_ref_idx_active[idx] - 1);
} else {
infer(sh_collocated_ref_idx, 0);
}
} else {
if (current->sh_slice_type == VVC_SLICE_TYPE_B)
infer(sh_collocated_from_l0_flag, ph->ph_collocated_from_l0_flag);
else
infer(sh_collocated_from_l0_flag, 1);
infer(sh_collocated_ref_idx, ph->ph_collocated_ref_idx);
}
}
if (!pps->pps_wp_info_in_ph_flag &&
((pps->pps_weighted_pred_flag &&
current->sh_slice_type == VVC_SLICE_TYPE_P) ||
(pps->pps_weighted_bipred_flag &&
current->sh_slice_type == VVC_SLICE_TYPE_B))) {
CHECK(FUNC(pred_weight_table) (ctx, rw, sps, pps, ref_pic_lists,
current->num_ref_idx_active,
&current->sh_pred_weight_table));
}
}
qp_bd_offset = 6 * sps->sps_bitdepth_minus8;
if (!pps->pps_qp_delta_info_in_ph_flag)
se(sh_qp_delta, -qp_bd_offset - (26 + pps->pps_init_qp_minus26),
63 - (26 + pps->pps_init_qp_minus26));
if (pps->pps_slice_chroma_qp_offsets_present_flag) {
int8_t off;
se(sh_cb_qp_offset, -12, 12);
off = pps->pps_cb_qp_offset + current->sh_cb_qp_offset;
if (off < -12 || off > 12) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"pps_cb_qp_offset + sh_cb_qp_offset (%d) not in range [-12, 12].\n",
off);
return AVERROR_INVALIDDATA;
}
se(sh_cr_qp_offset, -12, 12);
off = pps->pps_cr_qp_offset + current->sh_cr_qp_offset;
if (off < -12 || off > 12) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"pps_cr_qp_offset + sh_cr_qp_offset (%d) not in range [-12, 12].\n",
off);
return AVERROR_INVALIDDATA;
}
if (sps->sps_joint_cbcr_enabled_flag) {
se(sh_joint_cbcr_qp_offset, -12, 12);
off =
pps->pps_joint_cbcr_qp_offset_value +
current->sh_joint_cbcr_qp_offset;
if (off < -12 || off > 12) {
av_log(ctx->log_ctx, AV_LOG_ERROR,
"pps_joint_cbcr_qp_offset_value + sh_joint_cbcr_qp_offset (%d)"
"not in range [-12, 12]. \n", off);
return AVERROR_INVALIDDATA;
}
} else {
infer(sh_joint_cbcr_qp_offset, 0);
}
} else {
infer(sh_cb_qp_offset, 0);
infer(sh_cr_qp_offset, 0);
infer(sh_joint_cbcr_qp_offset, 0);
}
if (pps->pps_cu_chroma_qp_offset_list_enabled_flag)
flag(sh_cu_chroma_qp_offset_enabled_flag);
else
infer(sh_cu_chroma_qp_offset_enabled_flag, 0);
if (sps->sps_sao_enabled_flag && !pps->pps_sao_info_in_ph_flag) {
flag(sh_sao_luma_used_flag);
if (sps->sps_chroma_format_idc != 0)
flag(sh_sao_chroma_used_flag);
else
infer(sh_sao_chroma_used_flag, ph->ph_sao_chroma_enabled_flag);
} else {
infer(sh_sao_luma_used_flag, ph->ph_sao_luma_enabled_flag);
infer(sh_sao_chroma_used_flag, ph->ph_sao_chroma_enabled_flag);
}
if (pps->pps_deblocking_filter_override_enabled_flag &&
!pps->pps_dbf_info_in_ph_flag)
flag(sh_deblocking_params_present_flag);
else
infer(sh_deblocking_params_present_flag, 0);
if (current->sh_deblocking_params_present_flag) {
if (!pps->pps_deblocking_filter_disabled_flag)
flag(sh_deblocking_filter_disabled_flag);
else
infer(sh_deblocking_filter_disabled_flag, 0);
if (!current->sh_deblocking_filter_disabled_flag) {
se(sh_luma_beta_offset_div2, -12, 12);
se(sh_luma_tc_offset_div2, -12, 12);
if (pps->pps_chroma_tool_offsets_present_flag) {
se(sh_cb_beta_offset_div2, -12, 12);
se(sh_cb_tc_offset_div2, -12, 12);
se(sh_cr_beta_offset_div2, -12, 12);
se(sh_cr_tc_offset_div2, -12, 12);
} else {
infer(sh_cb_beta_offset_div2,
current->sh_luma_beta_offset_div2);
infer(sh_cb_tc_offset_div2, current->sh_luma_tc_offset_div2);
infer(sh_cr_beta_offset_div2,
current->sh_luma_beta_offset_div2);
infer(sh_cr_tc_offset_div2, current->sh_luma_tc_offset_div2);
}
}
} else {
infer(sh_deblocking_filter_disabled_flag, ph->ph_deblocking_filter_disabled_flag);
if (!current->sh_deblocking_filter_disabled_flag) {
infer(sh_luma_beta_offset_div2, ph->ph_luma_beta_offset_div2);
infer(sh_luma_tc_offset_div2, ph->ph_luma_tc_offset_div2);
infer(sh_cb_beta_offset_div2, ph->ph_cb_beta_offset_div2);
infer(sh_cb_tc_offset_div2, ph->ph_cb_tc_offset_div2);
infer(sh_cr_beta_offset_div2, ph->ph_cr_beta_offset_div2);
infer(sh_cr_tc_offset_div2, ph->ph_cr_tc_offset_div2);
}
}
if (sps->sps_dep_quant_enabled_flag)
flag(sh_dep_quant_used_flag);
else
infer(sh_dep_quant_used_flag, 0);
if (sps->sps_sign_data_hiding_enabled_flag &&
!current->sh_dep_quant_used_flag)
flag(sh_sign_data_hiding_used_flag);
else
infer(sh_sign_data_hiding_used_flag, 0);
if (sps->sps_transform_skip_enabled_flag &&
!current->sh_dep_quant_used_flag &&
!current->sh_sign_data_hiding_used_flag)
flag(sh_ts_residual_coding_disabled_flag);
else
infer(sh_ts_residual_coding_disabled_flag, 0);
if (!current->sh_ts_residual_coding_disabled_flag &&
sps->sps_ts_residual_coding_rice_present_in_sh_flag)
ub(3, sh_ts_residual_coding_rice_idx_minus1);
else
infer(sh_ts_residual_coding_rice_idx_minus1, 0);
if (sps->sps_reverse_last_sig_coeff_enabled_flag)
flag(sh_reverse_last_sig_coeff_flag);
else
infer(sh_reverse_last_sig_coeff_flag, 0);
if (pps->pps_slice_header_extension_present_flag) {
ue(sh_slice_header_extension_length, 0, 256);
for (i = 0; i < current->sh_slice_header_extension_length; i++)
us(8, sh_slice_header_extension_data_byte[i], 0x00, 0xff, 1, i);
}
current->num_entry_points = 0;
if (sps->sps_entry_point_offsets_present_flag) {
uint8_t entropy_sync = sps->sps_entropy_coding_sync_enabled_flag;
int height;
if (pps->pps_rect_slice_flag) {
int width_in_tiles;
int slice_idx = current->sh_slice_address;
for (i = 0; i < current->curr_subpic_idx; i++) {
slice_idx += pps->num_slices_in_subpic[i];
}
width_in_tiles =
pps->pps_slice_width_in_tiles_minus1[slice_idx] + 1;
if (entropy_sync)
height = pps->slice_height_in_ctus[slice_idx];
else
height = pps->pps_slice_height_in_tiles_minus1[slice_idx] + 1;
current->num_entry_points = width_in_tiles * height;
} else {
int tile_idx;
int tile_y;
for (tile_idx = current->sh_slice_address;
tile_idx <=
current->sh_slice_address +
current->sh_num_tiles_in_slice_minus1; tile_idx++) {
tile_y = tile_idx / pps->num_tile_rows;
height = pps->row_height_val[tile_y];
current->num_entry_points += (entropy_sync ? height : 1);
}
}
current->num_entry_points--;
if (current->num_entry_points > VVC_MAX_ENTRY_POINTS) {
av_log(ctx->log_ctx, AV_LOG_ERROR, "Too many entry points: "
"%" PRIu16 ".\n", current->num_entry_points);
return AVERROR_PATCHWELCOME;
}
if (current->num_entry_points > 0) {
ue(sh_entry_offset_len_minus1, 0, 31);
for (i = 0; i < current->num_entry_points; i++) {
ubs(current->sh_entry_offset_len_minus1 + 1,
sh_entry_point_offset_minus1[i], 1, i);
}
}
}
CHECK(FUNC(byte_alignment) (ctx, rw));
return 0;
}
SEI_FUNC(sei_decoded_picture_hash, (CodedBitstreamContext *ctx,
RWContext *rw,
H266RawSEIDecodedPictureHash *current,
SEIMessageState *unused))
{
int err, c_idx, i;
HEADER("Decoded Picture Hash");
u(8, dph_sei_hash_type, 0, 2);
flag(dph_sei_single_component_flag);
ub(7, dph_sei_reserved_zero_7bits);
for (c_idx = 0; c_idx < (current->dph_sei_single_component_flag ? 1 : 3);
c_idx++) {
if (current->dph_sei_hash_type == 0) {
for (i = 0; i < 16; i++)
us(8, dph_sei_picture_md5[c_idx][i], 0x00, 0xff, 2, c_idx, i);
} else if (current->dph_sei_hash_type == 1) {
us(16, dph_sei_picture_crc[c_idx], 0x0000, 0xffff, 1, c_idx);
} else if (current->dph_sei_hash_type == 2) {
us(32, dph_sei_picture_checksum[c_idx], 0x00000000, 0xffffffff, 1,
c_idx);
}
}
return 0;
}
static int FUNC(sei) (CodedBitstreamContext *ctx, RWContext *rw,
H266RawSEI *current, int prefix)
{
int err;
if (prefix)
HEADER("Prefix Supplemental Enhancement Information");
else
HEADER("Suffix Supplemental Enhancement Information");
CHECK(FUNC(nal_unit_header) (ctx, rw, &current->nal_unit_header,
prefix ? VVC_PREFIX_SEI_NUT
: VVC_SUFFIX_SEI_NUT));
CHECK(FUNC_SEI(message_list) (ctx, rw, &current->message_list, prefix));
CHECK(FUNC(rbsp_trailing_bits) (ctx, rw));
return 0;
}
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