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cbs_h266_syntax_template.c
3471 lines (3181 loc) · 143 KB
/
cbs_h266_syntax_template.c
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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,
¤t->
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, ¤t->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(¤t->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, ¤t->rpl_ref_list[i],
i, sps->sps_num_ref_pic_lists[i],
sps));
}
ref_list = ¤t->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,
¤t->nal_sub_layer_hrd_parameters,
i, general));
if (general->general_vcl_hrd_params_present_flag)
CHECK(FUNC(sublayer_hrd_parameters) (ctx, rw,
¤t->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,
¤t->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, ¤t->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,
¤t->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, ¤t->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,
¤t->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++;
}
}
}
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,
¤t->
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