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H265Deserialize.cpp
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#include "H265Deserialize.h"
#include <cmath>
#include <memory>
#include <vector>
#include <cassert>
#include <cstdint>
#include <algorithm>
#include "H265Common.h"
#include "H26xUltis.h"
// Quick Note
//
// (1) reference picture set (RPS):
// A set of reference pictures associated with a picture, consisting of all reference
// pictures that are prior to the associated picture in decoding order, that may be used for inter prediction of the
// associated picture or any picture following the associated picture in decoding order.
// (2) coded video sequence (CVS):
// A sequence of access units that consists, in decoding order, of an IRAP access
// unit with NoRaslOutputFlag equal to 1, followed by zero or more access units that are not IRAP access units
// with NoRaslOutputFlag equal to 1, including all subsequent access units up to but not including any subsequent
// access unit that is an IRAP access unit with NoRaslOutputFlag equal to 1.
//
// Abbreviations and acronyms
//
// CB Coding Block
// BPB Bitstream Partition Buffer
// CLVS Coded Layer-wise Video Sequenc
// CPB Coded Picture Buffer
// CRA Clean Random Access
// CTB Coding Tree Block
// CTU Coding Tree Unit
// CVS Coded Video Sequence
// IRAP Intra Random Access Point
// RADL Random Access Decodable Leading (Picture)
// RASL Random Access Skipped Leading (Picture)
// SLNR Sub-Layer Non-Reference (Picture)
//
namespace Mmp
{
namespace Codec
{
static bool IsIRAP(uint8_t nal_unit_type)
{
return nal_unit_type == H265NaluType::MMP_H265_NALU_TYPE_RSV_IRAP_VCL22 || nal_unit_type == MMP_H265_NALU_TYPE_RSV_IRAP_VCL23;
}
static bool IsRASL(uint8_t nal_unit_type)
{
switch (nal_unit_type)
{
case H265NaluType::MMP_H265_NALU_TYPE_RADL_N:
case H265NaluType::MMP_H265_NALU_TYPE_RADL_R:
case H265NaluType::MMP_H265_NALU_TYPE_BLA_W_RADL:
case H265NaluType::MMP_H265_NALU_TYPE_IDR_W_RADL:
return true;
default:
return false;
}
}
static bool IsRADL(uint8_t nal_unit_type)
{
switch (nal_unit_type)
{
case H265NaluType::MMP_H265_NALU_TYPE_RADL_N:
case H265NaluType::MMP_H265_NALU_TYPE_RADL_R:
case H265NaluType::MMP_H265_NALU_TYPE_BLA_W_RADL:
case H265NaluType::MMP_H265_NALU_TYPE_IDR_W_RADL:
return true;
default:
return false;
}
}
static bool IsSLNR(uint8_t nal_unit_type)
{
switch (nal_unit_type)
{
case H265NaluType::MMP_H265_NALU_TYPE_RSV_VCL_N10:
case H265NaluType::MMP_H265_NALU_TYPE_RSV_VCL_N12:
case H265NaluType::MMP_H265_NALU_TYPE_RSV_VCL_N14:
return true;
default:
return false;
}
}
} // namespace Codec
} // namespace Mmp
namespace Mmp
{
namespace Codec
{
// Table 7-5 – Specification of default values of ScalingList[ 0 ][ matrixId ][ i ] with i = 0..15
static std::vector<int32_t> Default_4x4_ScalingList = {16, 16, 16, 16,
16, 16, 16, 16,
16, 16, 16, 16,
16, 16, 16, 16
};
// Table 7-4 – Specification of matrixId according to sizeId, prediction mode and colour component
// Table 7-6 – Specification of default values of ScalingList[ 1..3 ][ matrixId ][ i ] with i = 0..63
static std::vector<int32_t> Default_8x8_ScalingListIntra = {16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 17, 16, 17, 16, 17, 18,
17, 18, 18, 17, 18, 21, 19, 20,
21, 20, 19, 21, 24, 22, 22, 24,
24, 22, 22, 24, 25, 25, 27, 30,
27, 25, 25, 29, 31, 35, 35, 31,
29, 36, 41, 44, 41, 36, 47, 54,
54, 47, 65, 70, 65, 88, 88, 115
};
static std::vector<int32_t> Default_8x8_ScalingListInter = {16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 17, 17, 17, 17, 17, 18,
18, 18, 18, 18, 18, 20, 20, 20,
20, 20, 20, 20, 24, 24, 24, 24,
24, 24, 24, 24, 25, 25, 25, 25,
25, 25, 25, 28, 28, 28, 28, 28,
28, 33, 33, 33, 33, 33, 41, 41,
41, 41, 54, 54, 54, 71, 71, 91
};
static uint32_t GetCurrRpsIdx(H265SpsSyntax::ptr sps, H265SliceHeaderSyntax::ptr slice)
{
return slice->short_term_ref_pic_set_sps_flag == 1 ? slice->short_term_ref_pic_set_idx : sps->num_short_term_ref_pic_sets;
}
static uint32_t GetNumPicTotalCurr(uint32_t CurrRpsIdx, H265SpsSyntax::ptr sps, H265PpsSyntax::ptr pps, H265SliceHeaderSyntax::ptr slice, H265ContextSyntax::ptr context) // (7-57)
{
uint32_t NumPicTotalCurr = 0;
{
uint32_t NumNegativePic = context->NumNegativePics[CurrRpsIdx];
auto& UsedByCurrPicS0 = context->UsedByCurrPicS0[CurrRpsIdx];
for (uint32_t i=0; i<NumNegativePic; i++)
{
if (UsedByCurrPicS0[i])
{
NumPicTotalCurr++;
}
}
}
{
uint32_t NumPositivePic = context->NumPositivePics[CurrRpsIdx];
auto& UsedByCurrPicS1 = context->UsedByCurrPicS1[CurrRpsIdx];
for (uint32_t i=0; i<NumPositivePic; i++)
{
if (UsedByCurrPicS1[i])
{
NumPicTotalCurr++;
}
}
}
for (uint32_t i=0; i<sps->num_long_term_ref_pics_sps + slice->num_long_term_pics; i++)
{
if (context->UsedByCurrPicLt[i])
{
NumPicTotalCurr++;
}
}
if (pps->pps_scc_extension_flag && pps->ppsScc->pps_curr_pic_ref_enabled_flag)
{
NumPicTotalCurr++;
}
return NumPicTotalCurr;
}
H265Deserialize::H265Deserialize()
{
_contex = std::make_shared<H265ContextSyntax>();
}
bool H265Deserialize::DeserializeByteStreamNalUnit(H26xBinaryReader::ptr br, H265NalSyntax::ptr nal)
{
// See also : ITU-T H.265 (2021) - B.2.1 Byte stream NAL unit syntax
try
{
uint32_t next_24_bits = 0;
br->U(24, next_24_bits, true);
while (next_24_bits != 0x000001)
{
if ((next_24_bits & 0xFFFF) == 0)
{
br->Skip(8);
}
else if ((next_24_bits & 0xFF) == 0)
{
br->Skip(16);
}
else
{
br->Skip(32);
}
br->U(24, next_24_bits, true);
}
br->Skip(24); // start_code_prefix_one_3bytes /* equal to 0x000001 */
if (!DeserializeNalSyntax(br, nal))
{
return false;
}
while (br->more_data_in_byte_stream())
{
br->U(24, next_24_bits, true);
if (next_24_bits != 0x000001)
{
if ((next_24_bits & 0xFFFF) == 0)
{
br->Skip(8);
}
else if ((next_24_bits & 0xFF) == 0)
{
br->Skip(16);
}
else
{
br->Skip(32);
}
}
else
{
break;
}
}
return true;
}
catch (const std::out_of_range& /* eof */)
{
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeNalSyntax(H26xBinaryReader::ptr br, H265NalSyntax::ptr nal)
{
// See also : ITU-T H.265 (2021) - B.2.1 Byte stream NAL unit syntax
try
{
br->BeginNalUnit();
nal->header = std::make_shared<H265NalUnitHeaderSyntax>();
if (!DeserializeNalHeaderSyntax(br, nal->header))
{
assert(false);
return false;
}
switch (nal->header->nal_unit_type)
{
case H265NaluType::MMP_H265_NALU_TYPE_VPS_NUT:
{
nal->vps = std::make_shared<H265VPSSyntax>();
if (!DeserializeVPSSyntax(br, nal->vps))
{
assert(false);
return false;
}
break;
}
case H265NaluType::MMP_H265_NALU_TYPE_SPS_NUT:
{
nal->sps = std::make_shared<H265SpsSyntax>();
if (!DeserializeSpsSyntax(br, nal->sps))
{
assert(false);
return false;
}
break;
}
case H265NaluType::MMP_H265_NALU_TYPE_PPS_NUT:
{
nal->pps = std::make_shared<H265PpsSyntax>();
if (!DeserializePpsSyntax(br, nal->pps))
{
assert(false);
return false;
}
break;
}
case H265NaluType::MMP_H265_NALU_TYPE_TRAIL_R:
case H265NaluType::MMP_H265_NALU_TYPE_TRAIL_N:
case H265NaluType::MMP_H265_NALU_TYPE_TSA_N:
case H265NaluType::MMP_H265_NALU_TYPE_TSA_R:
case H265NaluType::MMP_H265_NALU_TYPE_STSA_N:
case H265NaluType::MMP_H265_NALU_TYPE_STSA_R:
case H265NaluType::MMP_H265_NALU_TYPE_BLA_W_LP:
case H265NaluType::MMP_H265_NALU_TYPE_BLA_W_RADL:
case H265NaluType::MMP_H265_NALU_TYPE_BLA_N_LP:
case H265NaluType::MMP_H265_NALU_TYPE_IDR_W_RADL:
case H265NaluType::MMP_H265_NALU_TYPE_IDR_N_LP:
case H265NaluType::MMP_H265_NALU_TYPE_CRA_NUT:
case H265NaluType::MMP_H265_NALU_TYPE_RADL_N:
case H265NaluType::MMP_H265_NALU_TYPE_RADL_R:
case H265NaluType::MMP_H265_NALU_TYPE_RASL_N:
case H265NaluType::MMP_H265_NALU_TYPE_RASL_R:
{
nal->slice = std::make_shared<H265SliceHeaderSyntax>();
if (!DeserializeSliceHeaderSyntax(br, nal->header, nal->slice))
{
assert(false);
break;
}
break;
}
default:
assert(false);
break;
}
br->EndNalUnit();
return true;
}
catch (const std::out_of_range& /* eof */)
{
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeNalHeaderSyntax(H26xBinaryReader::ptr br, H265NalUnitHeaderSyntax::ptr nalHeader)
{
// See also : ITU-T H.265 (2021) - 7.3.1.2 NAL unit header syntax
try
{
br->U(1, nalHeader->forbidden_zero_bit);
br->U(6, nalHeader->nal_unit_type);
br->U(6, nalHeader->nuh_layer_id);
br->U(3, nalHeader->nuh_temporal_id_plus1);
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializePpsSyntax(H26xBinaryReader::ptr br, H265PpsSyntax::ptr pps)
{
// See also : ITU-T H.265 (2021) - 7.3.2.3.1 General picture parameter set RBSP syntax
try
{
br->UE(pps->pps_pic_parameter_set_id);
{
// Hint : The value of pps_pic_parameter_set_id shall be in the range of 0 to 63, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->pps_pic_parameter_set_id>=0 && */ pps->pps_pic_parameter_set_id<=63, "[pps] pps_pic_parameter_set_id out of range", return false);
}
br->UE(pps->pps_seq_parameter_set_id);
{
// Hint : The value of pps_seq_parameter_set_id shall be in the range of 0 to 15, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->pps_seq_parameter_set_id>=0 && */ pps->pps_seq_parameter_set_id<=15, "[pps] pps_seq_parameter_set_id out of range", return false);
}
if (_contex->spsSet.count(pps->pps_seq_parameter_set_id) == 0)
{
assert(false);
return false;
}
H265SpsSyntax::ptr sps = _contex->spsSet[pps->pps_seq_parameter_set_id];
br->U(1, pps->dependent_slice_segments_enabled_flag);
br->U(1, pps->output_flag_present_flag);
br->U(3, pps->num_extra_slice_header_bits);
br->U(1, pps->sign_data_hiding_enabled_flag);
br->U(1, pps->cabac_init_present_flag);
br->UE(pps->num_ref_idx_l0_default_active_minus1);
{
// Hint : The value of num_ref_idx_l0_default_active_minus1 shall be in the range of 0 to 14, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->num_ref_idx_l0_default_active_minus1>=0 && */ pps->num_ref_idx_l0_default_active_minus1<=14, "[pps] num_ref_idx_l0_default_active_minus1 out of range", return false);
}
br->UE(pps->num_ref_idx_l1_default_active_minus1);
{
// Hint : The value of num_ref_idx_l1_default_active_minus1 shall be in the range of 0 to 14, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->num_ref_idx_l1_default_active_minus1>=0 && */ pps->num_ref_idx_l1_default_active_minus1<=14, "[pps] num_ref_idx_l1_default_active_minus1 out of range", return false);
}
br->SE(pps->init_qp_minus26);
br->U(1, pps->constrained_intra_pred_flag);
br->U(1, pps->transform_skip_enabled_flag);
br->U(1, pps->cu_qp_delta_enabled_flag);
if (pps->cu_qp_delta_enabled_flag)
{
br->UE(pps->diff_cu_qp_delta_depth);
{
// Hint : The value of diff_cu_qp_delta_depth shall be in the range of 0 to log2_diff_max_min_luma_coding_block_size, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->diff_cu_qp_delta_depth>=0 && */ pps->diff_cu_qp_delta_depth<=sps->log2_diff_max_min_luma_coding_block_size, "[pps] diff_cu_qp_delta_depth out of range", return false);
}
}
br->SE(pps->pps_cb_qp_offset);
br->SE(pps->pps_cr_qp_offset);
{
// Hint : The values of pps_cb_qp_offset and pps_cr_qp_offset shall be in the range of −12 to +12, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(pps->pps_cb_qp_offset>=-12 && pps->pps_cb_qp_offset<=12, "[pps] pps_cb_qp_offset out of range", return false);
MPP_H26X_SYNTAXT_STRICT_CHECK(pps->pps_cr_qp_offset>=-12 && pps->pps_cr_qp_offset<=12, "[pps] pps_cr_qp_offset out of range", return false);
}
br->U(1, pps->pps_slice_chroma_qp_offsets_present_flag);
br->U(1, pps->weighted_pred_flag);
br->U(1, pps->weighted_bipred_flag);
br->U(1, pps->transquant_bypass_enabled_flag);
br->U(1, pps->tiles_enabled_flag);
br->U(1, pps->entropy_coding_sync_enabled_flag);
if (pps->tiles_enabled_flag)
{
br->UE(pps->num_tile_columns_minus1);
{
// Hint : num_tile_columns_minus1 plus 1 specifies the number of tile columns partitioning the picture.
// num_tile_columns_minus1 shall be in the range of 0 to PicWidthInCtbsY − 1, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->num_tile_columns_minus1>=0 && */ pps->num_tile_columns_minus1<=sps->context->PicWidthInCtbsY-1, "[pps] num_tile_columns_minus1 out of range", return false);
}
br->UE(pps->num_tile_rows_minus1);
{
// Hint : num_tile_rows_minus1 shall be in the range of 0 to PicHeightInCtbsY − 1, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* pps->num_tile_rows_minus1>=0 && */ pps->num_tile_rows_minus1<=sps->context->PicHeightInCtbsY-1, "[pps] num_tile_rows_minus1 out of range", return false);
}
br->U(1, pps->uniform_spacing_flag);
if (!pps->uniform_spacing_flag)
{
pps->column_width_minus1.resize(pps->num_tile_columns_minus1);
pps->row_height_minus1.resize(pps->num_tile_rows_minus1);
for (uint32_t i=0; i<pps->num_tile_columns_minus1; i++)
{
br->UE(pps->column_width_minus1[i]);
}
for (uint32_t i=0; i<pps->num_tile_rows_minus1; i++)
{
br->UE(pps->row_height_minus1[i]);
}
}
br->U(1, pps->loop_filter_across_tiles_enabled_flag);
}
br->U(1, pps->pps_loop_filter_across_slices_enabled_flag);
br->U(1, pps->deblocking_filter_control_present_flag);
if (pps->deblocking_filter_control_present_flag)
{
br->U(1, pps->deblocking_filter_override_enabled_flag);
br->U(1, pps->pps_deblocking_filter_disabled_flag);
if (!pps->pps_deblocking_filter_disabled_flag)
{
br->SE(pps->pps_beta_offset_div2);
br->SE(pps->pps_tc_offset_div2);
{
// Hint : The values of pps_beta_offset_div2 and pps_tc_offset_div2 shall both be in the range of −6 to 6, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(pps->pps_beta_offset_div2>=-6 && pps->pps_beta_offset_div2<=6, "[pps] pps_beta_offset_div2 out of range", return false);
MPP_H26X_SYNTAXT_STRICT_CHECK(pps->pps_tc_offset_div2>=-6 && pps->pps_tc_offset_div2<=6, "[pps] pps_tc_offset_div2 out of range", return false);
}
}
}
br->U(1, pps->pps_scaling_list_data_present_flag);
if (pps->pps_scaling_list_data_present_flag)
{
pps->scaling_list_data = std::make_shared<H265ScalingListDataSyntax>();
if (!DeserializeScalingListDataSyntax(br, pps->scaling_list_data))
{
assert(false);
return false;
}
}
br->U(1, pps->lists_modification_present_flag);
br->UE(pps->log2_parallel_merge_level_minus2);
br->U(1, pps->slice_segment_header_extension_present_flag);
br->U(1, pps->pps_extension_present_flag);
if (pps->pps_extension_present_flag)
{
br->U(1, pps->pps_range_extension_flag);
br->U(1, pps->pps_multilayer_extension_flag);
br->U(1, pps->pps_3d_extension_flag);
br->U(1, pps->pps_scc_extension_flag);
br->U(4, pps->pps_extension_4bits);
}
if (pps->pps_range_extension_flag)
{
pps->ppsRange = std::make_shared<H265PpsRangeSyntax>();
if (!DeserializePpsRangeSyntax(br, sps, pps, pps->ppsRange))
{
assert(false);
return false;
}
}
if (pps->pps_multilayer_extension_flag)
{
pps->ppsMultilayer = std::make_shared<H265PpsMultilayerSyntax>();
if (!DeserializePpsMultilayerSyntax(br, pps->ppsMultilayer))
{
assert(false);
return false;
}
}
if (pps->pps_3d_extension_flag)
{
pps->pps3d = std::make_shared<H265Pps3dSyntax>();
if (!DeserializePps3dSyntax(br, pps, pps->pps3d))
{
assert(false);
return false;
}
}
if (pps->pps_scc_extension_flag)
{
pps->ppsScc = std::make_shared<H265PpsSccSyntax>();
if (!DeserializePpsSccSyntax(br, pps->ppsScc))
{
assert(false);
return false;
}
}
if (pps->pps_extension_4bits)
{
while (br->more_rbsp_data())
{
br->U(1, pps->pps_extension_data_flag);
}
}
br->rbsp_trailing_bits();
_contex->ppsSet[pps->pps_pic_parameter_set_id] = pps;
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeSpsSyntax(H26xBinaryReader::ptr br, H265SpsSyntax::ptr sps)
{
// See also : 7.3.2.2.1 General sequence parameter set RBSP syntax
try
{
br->U(4, sps->sps_video_parameter_set_id);
if (_contex->vpsSet.count(sps->sps_video_parameter_set_id) == 0)
{
return false;
}
H265VPSSyntax::ptr vps = _contex->vpsSet[sps->sps_video_parameter_set_id];
br->U(3, sps->sps_max_sub_layers_minus1);
{
// Hint : The value of sps_max_sub_layers_minus1 shall be in the range of 0 to 6, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->sps_max_sub_layers_minus1>=0 && */ sps->sps_max_sub_layers_minus1<=6, "[sps] sps_max_sub_layers_minus1 out of range", return false);
}
br->U(1, sps->sps_temporal_id_nesting_flag);
sps->ptl = std::make_shared<H265PTLSyntax>();
if (!DeserializePTLSyntax(br,1, sps->sps_max_sub_layers_minus1, sps->ptl))
{
assert(false);
return false;
}
br->UE(sps->sps_seq_parameter_set_id);
{
// Hint : The value of sps_seq_parameter_set_id shall be in the range of 0 to 15, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->sps_seq_parameter_set_id>=0 && */ sps->sps_seq_parameter_set_id<=15, "[sps] sps_seq_parameter_set_id out of range", return false);
}
br->UE(sps->chroma_format_idc);
{
// Hint : The value of chroma_format_idc shall be in the range of 0 to 3, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->chroma_format_idc>=0 && */ sps->chroma_format_idc<=3, "[sps] chroma_format_idc out of range", return false);
}
if (sps->chroma_format_idc == 3)
{
br->U(1, sps->separate_colour_plane_flag);
}
br->UE(sps->pic_width_in_luma_samples);
br->UE(sps->pic_height_in_luma_samples);
br->U(1, sps->conformance_window_flag);
if (sps->conformance_window_flag)
{
br->UE(sps->conf_win_left_offset);
br->UE(sps->conf_win_right_offset);
br->UE(sps->conf_win_top_offset);
br->UE(sps->conf_win_bottom_offset);
}
br->UE(sps->bit_depth_luma_minus8);
{
// Hint : bit_depth_luma_minus8 shall be in the range of 0 to 8, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->bit_depth_luma_minus8>=0 && */ sps->bit_depth_luma_minus8<=8, "[sps] bit_depth_luma_minus8 out of range", return false);
}
br->UE(sps->bit_depth_chroma_minus8);
{
// Hint : bit_depth_chroma_minus8 shall be in the range of 0 to 8, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->bit_depth_chroma_minus8>=0 && */ sps->bit_depth_chroma_minus8<=8, "[sps] bit_depth_chroma_minus8 out of range", return false);
}
br->UE(sps->log2_max_pic_order_cnt_lsb_minus4);
{
// Hint : The value of log2_max_pic_order_cnt_lsb_minus4 shall be in the range of 0 to 12, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->log2_max_pic_order_cnt_lsb_minus4>=0 && */ sps->log2_max_pic_order_cnt_lsb_minus4<=12, "[sps] log2_max_pic_order_cnt_lsb_minus4 out of range", return false);
}
br->U(1, sps->sps_sub_layer_ordering_info_present_flag);
sps->sps_max_dec_pic_buffering_minus1.resize(sps->sps_max_sub_layers_minus1 + 1);
sps->sps_max_num_reorder_pics.resize(sps->sps_max_sub_layers_minus1 + 1);
sps->sps_max_latency_increase_plus1.resize(sps->sps_max_sub_layers_minus1 + 1);
for (uint32_t i = (sps->sps_sub_layer_ordering_info_present_flag ? 0 : sps->sps_max_sub_layers_minus1); i<=sps->sps_max_sub_layers_minus1; i++)
{
br->UE(sps->sps_max_dec_pic_buffering_minus1[i]);
br->UE(sps->sps_max_num_reorder_pics[i]);
br->UE(sps->sps_max_latency_increase_plus1[i]);
}
if (!sps->sps_sub_layer_ordering_info_present_flag)
{
for (uint32_t i=0; i<sps->sps_max_sub_layers_minus1; i++)
{
sps->sps_max_dec_pic_buffering_minus1[i] = sps->sps_max_dec_pic_buffering_minus1[sps->sps_max_sub_layers_minus1];
sps->sps_max_num_reorder_pics[i] = sps->sps_max_num_reorder_pics[sps->sps_max_sub_layers_minus1];
sps->sps_max_latency_increase_plus1[i] = sps->sps_max_latency_increase_plus1[sps->sps_max_sub_layers_minus1];
}
}
br->UE(sps->log2_min_luma_coding_block_size_minus3);
br->UE(sps->log2_diff_max_min_luma_coding_block_size);
br->UE(sps->log2_min_luma_transform_block_size_minus2);
br->UE(sps->log2_diff_max_min_luma_transform_block_size);
br->UE(sps->max_transform_hierarchy_depth_inter);
br->UE(sps->max_transform_hierarchy_depth_intra);
br->U(1, sps->scaling_list_enabled_flag);
if (sps->scaling_list_enabled_flag)
{
br->U(1, sps->sps_scaling_list_data_present_flag);
if (sps->sps_scaling_list_data_present_flag)
{
sps->scaling_list_data = std::make_shared<H265ScalingListDataSyntax>();
if (!DeserializeScalingListDataSyntax(br, sps->scaling_list_data))
{
assert(false);
return false;
}
}
}
br->U(1, sps->amp_enabled_flag);
br->U(1, sps->sample_adaptive_offset_enabled_flag);
br->U(1, sps->pcm_enabled_flag);
if (sps->pcm_enabled_flag)
{
br->U(4, sps->pcm_sample_bit_depth_luma_minus1);
br->U(4, sps->pcm_sample_bit_depth_chroma_minus1);
br->UE(sps->log2_min_pcm_luma_coding_block_size_minus3);
br->UE(sps->log2_diff_max_min_pcm_luma_coding_block_size);
br->U(1, sps->pcm_loop_filter_disabled_flag);
}
br->UE(sps->num_short_term_ref_pic_sets);
{
// Hint : The value of num_short_term_ref_pic_sets shall be in the range of 0 to 64, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->num_short_term_ref_pic_sets>=0 && */ sps->num_short_term_ref_pic_sets<=64, "[sps] num_short_term_ref_pic_sets out of range", return false);
}
sps->stpss.resize(sps->num_short_term_ref_pic_sets);
for (uint32_t i=0; i<sps->num_short_term_ref_pic_sets; i++)
{
sps->stpss[i] = std::make_shared<H265StRefPicSetSyntax>();
if (!DeserializeStRefPicSetSyntax(br, sps, i, sps->stpss[i]))
{
assert(false);
return false;
}
}
br->U(1, sps->long_term_ref_pics_present_flag);
if (sps->long_term_ref_pics_present_flag)
{
br->UE(sps->num_long_term_ref_pics_sps);
{
// Hint : The value of num_long_term_ref_pics_sps shall be in the range of 0 to 32, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* sps->num_long_term_ref_pics_sps>=0 && */ sps->num_long_term_ref_pics_sps<=32, "[sps] num_long_term_ref_pics_sps out of range", return false);
}
sps->lt_ref_pic_poc_lsb_sps.resize(sps->num_long_term_ref_pics_sps);
sps->used_by_curr_pic_lt_sps_flag.resize(sps->num_long_term_ref_pics_sps);
for (uint32_t i=0; i<sps->num_long_term_ref_pics_sps; i++)
{
br->U(sps->log2_max_pic_order_cnt_lsb_minus4 + 4, sps->lt_ref_pic_poc_lsb_sps[i]);
br->U(1, sps->used_by_curr_pic_lt_sps_flag[i]);
}
}
br->U(1, sps->sps_temporal_mvp_enabled_flag);
br->U(1, sps->strong_intra_smoothing_enabled_flag);
br->U(1, sps->vui_parameters_present_flag);
if (sps->vui_parameters_present_flag)
{
sps->vui = std::make_shared<H265VuiSyntax>();
if (!DeserializeVuiSyntax(br, sps, sps->vui))
{
assert(false);
return false;
}
}
br->U(1, sps->sps_extension_present_flag);
if (sps->sps_extension_present_flag)
{
br->U(1, sps->sps_range_extension_flag);
br->U(1, sps->sps_multilayer_extension_flag);
br->U(1, sps->sps_3d_extension_flag);
br->U(1, sps->sps_scc_extension_flag);
br->U(4, sps->sps_extension_4bits);
}
if (sps->sps_range_extension_flag)
{
sps->spsRange = std::make_shared<H265SpsRangeSyntax>();
if (!DeserializeSpsRangeSyntax(br, sps->spsRange))
{
assert(false);
return false;
}
}
if (sps->sps_multilayer_extension_flag)
{
MPP_H26X_SYNTAXT_STRICT_CHECK(false, "[sps] missing feature sps_multilayer_extension_flag, not implement for now", return false);
return false;
}
if (sps->sps_3d_extension_flag)
{
sps->sps3d = std::make_shared<H265Sps3DSyntax>();
if (!DeserializeSps3DSyntax(br, sps->sps3d))
{
assert(false);
return false;
}
}
if (sps->sps_scc_extension_flag)
{
sps->spsScc = std::make_shared<H265SpsSccSyntax>();
if (!DeserializeSpsSccSyntax(br, sps, sps->spsScc))
{
assert(false);
return false;
}
}
if (sps->sps_extension_4bits)
{
while (br->more_rbsp_data())
{
br->U(1, sps->sps_extension_data_flag);
}
}
br->rbsp_trailing_bits();
FillH265SpsContext(sps);
_contex->spsSet[sps->sps_seq_parameter_set_id] = sps;
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeVPSSyntax(H26xBinaryReader::ptr br, H265VPSSyntax::ptr vps)
{
// See also : ITU-T H.265 (2021) - 7.3.2.1 Video parameter set RBSP syntax
try
{
br->U(4, vps->vps_video_parameter_set_id);
br->U(1, vps->vps_base_layer_internal_flag);
br->U(1, vps->vps_base_layer_available_flag);
br->U(6, vps->vps_max_layers_minus1);
{
// Hint : vps_max_layers_minus1 shall be less than 63 in bitstreams conforming to this version of this Specification.
MPP_H26X_SYNTAXT_STRICT_CHECK(vps->vps_max_layers_minus1 <= 63, "[vps] vps_max_layers_minus1 out of range", return false);
}
br->U(3, vps->vps_max_sub_layers_minus1);
{
// Hint : The value of vps_max_sub_layers_minus1 shall be in the range of 0 to 6, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* vps->vps_max_sub_layers_minus1 >= 0 && */ vps->vps_max_sub_layers_minus1 <= 6, "[vps] vps_max_sub_layers_minus1 out of range", return false);
}
br->U(1, vps->vps_temporal_id_nesting_flag);
{
// Hint : When vps_max_sub_layers_minus1 is equal to 0, vps_temporal_id_nesting_flag shall be equal to 1.
MPP_H26X_SYNTAXT_STRICT_CHECK(vps->vps_max_sub_layers_minus1 == 0 && vps->vps_temporal_id_nesting_flag == 1, "[vps] vps_temporal_id_nesting_flag shall be 1", return false);
}
br->U(16, vps->vps_reserved_0xffff_16bits);
MPP_H26X_SYNTAXT_STRICT_CHECK(vps->vps_reserved_0xffff_16bits==0xFFFF, "[vps] vps_reserved_0xffff_16bits is not equal to 0xffff", return false);
vps->ptl = std::make_shared<H265PTLSyntax>();
if (!DeserializePTLSyntax(br, 1, vps->vps_max_sub_layers_minus1, vps->ptl))
{
assert(false);
return false;
}
br->U(1, vps->vps_sub_layer_ordering_info_present_flag);
vps->vps_max_dec_pic_buffering_minus1.resize(vps->vps_max_layers_minus1 + 1);
vps->vps_max_num_reorder_pics.resize(vps->vps_max_layers_minus1 + 1);
vps->vps_max_latency_increase_plus1.resize(vps->vps_max_layers_minus1 + 1);
for (uint32_t i= (vps->vps_sub_layer_ordering_info_present_flag ? 0 : vps->vps_max_sub_layers_minus1); i<=vps->vps_max_sub_layers_minus1; i++)
{
br->UE(vps->vps_max_dec_pic_buffering_minus1[i]);
br->UE(vps->vps_max_num_reorder_pics[i]);
br->UE(vps->vps_max_latency_increase_plus1[i]);
}
if (!vps->vps_sub_layer_ordering_info_present_flag)
{
for (uint32_t i= 0; i<vps->vps_max_sub_layers_minus1; i++)
{
// Hint : vps_max_num_reorder_pics[ vps_max_sub_layers_minus1 ] and vps_max_latency_increase_plus1[ vps_max_sub_layers_minus1 ] apply to all sub-layers ...
vps->vps_max_dec_pic_buffering_minus1[i] = vps->vps_max_dec_pic_buffering_minus1[vps->vps_max_sub_layers_minus1];
vps->vps_max_num_reorder_pics[i] = vps->vps_max_num_reorder_pics[vps->vps_max_sub_layers_minus1];
vps->vps_max_latency_increase_plus1[i] = vps->vps_max_latency_increase_plus1[vps->vps_max_sub_layers_minus1];
}
}
br->U(6, vps->vps_max_layer_id);
br->UE(vps->vps_num_layer_sets_minus1);
{
// Hint : The value of vps_num_layer_sets_minus1 shall be in the range of 0to 1 023, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* vps->vps_num_layer_sets_minus1>=0 && */ vps->vps_num_layer_sets_minus1<=1023, "[vps] vps_num_layer_sets_minus1 out of range", return false);
}
vps->layer_id_included_flag.resize(vps->vps_num_layer_sets_minus1 + 1);
for (uint32_t i=1; i<=vps->vps_num_layer_sets_minus1; i++)
{
vps->layer_id_included_flag[i].resize(vps->vps_max_layer_id + 1);
for (uint32_t j=0; j<=vps->vps_max_layer_id; j++)
{
br->U(1, vps->layer_id_included_flag[i][j]);
}
}
br->U(1, vps->vps_timing_info_present_flag);
if (vps->vps_timing_info_present_flag)
{
br->U(32, vps->vps_num_units_in_tick);
br->U(32, vps->vps_time_scale);
br->U(1, vps->vps_poc_proportional_to_timing_flag);
if (vps->vps_poc_proportional_to_timing_flag)
{
br->UE(vps->vps_num_ticks_poc_diff_one_minus1);
}
br->UE(vps->vps_num_hrd_parameters);
vps->hrd_layer_set_idx.resize(vps->vps_num_hrd_parameters);
vps->cprms_present_flag.resize(vps->vps_num_hrd_parameters);
vps->hrds.resize(vps->vps_num_hrd_parameters);
for (uint32_t i=0; i<vps->vps_num_hrd_parameters; i++)
{
br->UE(vps->hrd_layer_set_idx[i]);
if (i>0)
{
br->U(1, vps->cprms_present_flag[i]);
}
else
{
// Hint : cprms_present_flag[ 0 ] is inferred to be equal to 1.
vps->cprms_present_flag[i] = 1;
}
vps->hrds[i] = std::make_shared<H265HrdSyntax>();
if (!DeserializeHrdSyntax(br, vps->cprms_present_flag[i], vps->vps_max_sub_layers_minus1, vps->hrds[i]))
{
assert(false);
return false;
}
}
}
br->U(1, vps->vps_extension_flag);
if (vps->vps_extension_flag)
{
while (br->more_rbsp_data())
{
br->U(1, vps->vps_extension_data_flag);
}
}
br->rbsp_trailing_bits();
_contex->vpsSet[vps->vps_video_parameter_set_id] = vps;
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeSeiMessageSyntax(H26xBinaryReader::ptr br, H265VPSSyntax::ptr vps, H265SpsSyntax::ptr sps, H265VuiSyntax::ptr vui, H265HrdSyntax::ptr hrd, H265SeiMessageSyntax::ptr sei)
{
// See also : 7.3.5 Supplemental enhancement information message syntax
try
{
uint8_t ff_byte = 0;
do
{
br->U(8, ff_byte);
sei->payloadType += ff_byte;
} while (ff_byte == 0xFF);
do
{
br->U(8, ff_byte);
sei->payloadSize += ff_byte;
} while (ff_byte == 0xFF);
// See also : D.2.1 General SEI message syntax
switch (sei->payloadSize)
{
case H265SeiPaylodType::MMP_H265_SEI_PIC_TIMING:
{
sei->pt = std::make_shared<H265SeiPicTimingSyntax>();
if (!DeserializeSeiPicTimingSyntax(br, sps, vui, hrd, sei->pt))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_RECOVERY_POINT:
{
sei->rp = std::make_shared<H265SeiRecoveryPointSyntax>();
if (!DeserializeSeiRecoveryPointSyntax(br, sei->rp))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_ACTIVE_PARAMETER_SETS:
{
sei->aps = std::make_shared<H265SeiActiveParameterSetsSyntax>();
if (!DeserializeSeiActiveParameterSetsSyntax(br, vps, sei->aps))
{
assert(false);
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_DECODED_PICTURE_HASH:
{
sei->dph = std::make_shared<H265SeiDecodedPictureHashSyntax>();
if (!DeserializeSeiDecodedPictureHash(br, sps, sei->dph))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_TIME_CODE:
{
sei->tc = std::make_shared<H265SeiTimeCodeSyntax>();
if (!DeserializeSeiTimeCodeSyntax(br, sei->tc))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_MASTER_DISPLAY_COLOUR_VOLUME:
{
sei->mdcv = std::make_shared<H265MasteringDisplayColourVolumeSyntax>();
if (!DeserializeSeiMasteringDisplayColourVolumeSyntax(br, sei->mdcv))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_CONTENT_LIGHT_LEVEL_INFORMATION:
{
sei->clli = std::make_shared<H265ContentLightLevelInformationSyntax>();
if (!DeserializeSeiContentLightLevelInformationSyntax(br, sei->clli))
{
return false;
}
break;
}
case H265SeiPaylodType::MMP_H265_SEI_CONTENT_COLOUR_VOLUME:
{
sei->ccv = std::make_shared<H265ContentColourVolumeSyntax>();
if (!DeserializeSeiContentColourVolumeSyntax(br, sei->ccv))
{
return false;
}
break;
}
default:
br->Skip(sei->payloadSize * 8);
break;
}
return true;
}
catch (...)
{
return false;
}
}
bool H265Deserialize::DeserializeSliceHeaderSyntax(H26xBinaryReader::ptr br, H265NalUnitHeaderSyntax::ptr nal, H265SliceHeaderSyntax::ptr slice)
{
// See also : ITU-T H.265 (2021) - 7.3.6.1 General slice segment header syntax
try
{
H265SpsSyntax::ptr sps;
H265PpsSyntax::ptr pps;
int32_t CuQpDeltaVal = 0;
br->U(1, slice->first_slice_segment_in_pic_flag);
if (nal->nal_unit_type >= H265NaluType::MMP_H265_NALU_TYPE_BLA_W_LP && nal->nal_unit_type <= H265NaluType::MMP_H265_NALU_TYPE_RSV_IRAP_VCL23)
{
br->U(1, slice->no_output_of_prior_pics_flag);
}
br->UE(slice->slice_pic_parameter_set_id);
{
// Hint : The value of slice_pic_parameter_set_id shall be in the range of 0 to 63, inclusive.
MPP_H26X_SYNTAXT_STRICT_CHECK(/* slice->slice_pic_parameter_set_id>=0 && */ slice->slice_pic_parameter_set_id<=63, "[slice] slice_pic_parameter_set_id out of range", return false);
}
if (_contex->ppsSet.count(slice->slice_pic_parameter_set_id) == 0)
{
assert(false);
return false;
}
pps = _contex->ppsSet[slice->slice_pic_parameter_set_id];
if (_contex->spsSet.count(pps->pps_seq_parameter_set_id) == 0)
{
assert(false);
return false;
}
sps = _contex->spsSet[pps->pps_seq_parameter_set_id];
if (!slice->first_slice_segment_in_pic_flag)
{
if (pps->dependent_slice_segments_enabled_flag)
{
br->U(1, slice->dependent_slice_segment_flag);
}
br->U((uint32_t)std::ceil(std::log2(sps->context->PicSizeInCtbsY)), slice->slice_segment_address);
{