/* Gstreamer H.266 bitstream parser * * Copyright (C) 2023 Intel Corporation * Author: Zhong Hongcheng * Author: He Junyan * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, USA. */ #pragma once #ifndef GST_USE_UNSTABLE_API #warning "The H.266 parsing library is unstable API and may change in future." #warning "You can define GST_USE_UNSTABLE_API to avoid this warning." #endif #include #include G_BEGIN_DECLS #define GST_H266_IS_B_SLICE(slice) ((slice)->slice_type == GST_H266_B_SLICE) #define GST_H266_IS_P_SLICE(slice) ((slice)->slice_type == GST_H266_P_SLICE) #define GST_H266_IS_I_SLICE(slice) ((slice)->slice_type == GST_H266_I_SLICE) /* 6.2 we can have 3 sample arrays */ #define GST_H266_MAX_SAMPLE_ARRAYS 3 /* 7.4.3.3 vps_max_layers_minus1 is u(6) */ #define GST_H266_MAX_LAYERS 64 /* 7.4.3.3 The value of vps_max_sublayers_minus1 * shall be in the range of 0 to 6, inclusive */ #define GST_H266_MAX_SUBLAYERS 7 /* 7.4.3.3 vps_num_output_layer_sets_minus2 is u(8) */ #define GST_H266_MAX_TOTAL_NUM_OLSS 257 /* 7.4.3.3 vps_num_ptls_minus1 shall be less than TotalNumOlss, * which is MAX(GST_H266_MAX_LAYERS, GST_H266_MAX_TOTAL_NUM_OLSS) */ #define GST_H266_MAX_PTLS GST_H266_MAX_TOTAL_NUM_OLSS /* 7.3.2.3: vps_video_parameter_set_id is u(4). */ #define GST_H266_MAX_VPS_COUNT 16 /* 7.3.2.4: sps_seq_parameter_set_id is u(4) */ #define GST_H266_MAX_SPS_COUNT 16 /* 7.3.2.5: pps_pic_parameter_set_id is u(6) */ #define GST_H266_MAX_PPS_COUNT 64 /* 7.3.2.7: the value of aps_adaptation_parameter_set_id shall be in * the range of 0 to 7 or in the range of 0 to 3 inclusive, depending * on the aps_params_type. */ #define GST_H266_MAX_APS_COUNT 8 /* 7.4.4.1: ptl_num_sub_profiles is u(8) */ #define GST_H266_MAX_SUB_PROFILES 256 /* A.4.2: MaxDpbSize is bounded above by 2*maxDpbPicBuf(8) */ #define GST_H266_MAX_DPB_SIZE 16 /* 7.4.3.4: sps_num_ref_pic_lists in range [0, 64] */ #define GST_H266_MAX_REF_PIC_LISTS 64 /* 7.4.3.18: NumAlfFilters is 25 */ #define GST_H266_NUM_ALF_FILTERS 25 /* 7.4.11: num_ref_entries in range [0, MaxDpbSize + 13] */ #define GST_H266_MAX_REF_ENTRIES (GST_H266_MAX_DPB_SIZE + 13) /* 7.4.3.3 sps_num_points_in_qp_table_minus1[i] in range * [0, 36 - sps_qp_table_start_minus26[i]], and sps_qp_table_start_minus26[i] * in range [-26 - QpBdOffset, 36]. For 16 bits QpBdOffset is 6*8, * so sps_num_points_in_qp_table_minus1[i] in range [0, 110] */ #define GST_H266_MAX_POINTS_IN_QP_TABLE 111 /* 7.4.6.1: hrd_cpb_cnt_minus1 is in [0, 31]. */ #define GST_H266_MAX_CPB_CNT 32 /* A.4.1: the highest level allows a MaxLumaPs of 35 651 584. */ #define GST_H266_MAX_LUMA_PS 35651584 /* A.4.1: pic_width_in_luma_samples and pic_height_in_luma_samples are * constrained to be not greater than sqrt(MaxLumaPs * 8). Hence height/ * width are bounded above by sqrt(8 * 35651584) = 16888.2 samples. */ #define GST_H266_MAX_WIDTH 16888 #define GST_H266_MAX_HEIGHT 16888 /* A.4.1: table A.1 allows at most 440 tiles per au for any level. */ #define GST_H266_MAX_TILES_PER_AU 440 /* A.4.1: table A.1 did not define max tile rows. */ /* in worest a case, we can have 1x440 tiles picture. */ #define GST_H266_MAX_TILE_ROWS GST_H266_MAX_TILES_PER_AU /* A.4.1: table A.1 allows at most 20 tile columns for any level. */ #define GST_H266_MAX_TILE_COLUMNS 20 /* A.4.1 table A.1 allows at most 1000 slice for any level. */ #define GST_H266_MAX_SLICES_PER_AU 1000 /* 7.4.8: in the worst case (!pps_no_pic_partition_flag and * sps_entropy_coding_sync_enabled_flag are both true), entry points can be * placed at the beginning of every Ctb row in every tile, giving an * upper bound of (num_tile_columns_minus1 + 1) * PicHeightInCtbsY - 1. * Only a stream with very high resolution and perverse parameters could * get near that, though, so set a lower limit here with the maximum * possible value for 8K video (at most 135 32x32 Ctb rows). */ #define GST_H266_MAX_ENTRY_POINTS (GST_H266_MAX_TILE_COLUMNS * 135) /* Use MaxLumaPs of level 6.3 in Table A.2. The min coding block size is 8, so min width or height is 8. The min CTU size is 32. */ #define GST_H266_MAX_CTUS_IN_PICTURE (80216064 / 8 / 32) /** * GST_H266_IS_NAL_TYPE_IDR: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is IDR or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_IDR(nal_type) \ ((nal_type) == GST_H266_NAL_SLICE_IDR_N_LP || \ (nal_type) == GST_H266_NAL_SLICE_IDR_W_RADL) /** * GST_H266_IS_NAL_TYPE_GDR: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is GDR or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_GDR(nal_type) ((nal_type) == GST_H266_NAL_SLICE_GDR) /** * GST_H266_IS_NAL_TYPE_CRA: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is CRA or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_CRA(nal_type) ((nal_type) == GST_H266_NAL_SLICE_CRA) /** * GST_H266_IS_NAL_TYPE_IRAP: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is IRAP or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_IRAP(nal_type) \ (GST_H266_IS_NAL_TYPE_IDR (nal_type) || GST_H266_IS_NAL_TYPE_CRA (nal_type)) /** * GST_H266_IS_NAL_TYPE_CVSS: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is coded video sequence start or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_CVSS(nal_type) \ (GST_H266_IS_NAL_TYPE_IRAP(nal_type) || GST_H266_IS_NAL_TYPE_GDR(nal_type)) /** * GST_H266_IS_NAL_TYPE_RADL: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is RADL or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_RADL(nal_type) ((nal_type) == GST_H266_NAL_SLICE_RADL) /** * GST_H266_IS_NAL_TYPE_RASL: * @nal_type: a #GstH266NalUnitType * * Check whether @nal_type is RASL or not. * * Since: 1.26 */ #define GST_H266_IS_NAL_TYPE_RASL(nal_type) ((nal_type) == GST_H266_NAL_SLICE_RASL) /** * GstH266ParserResult: * * The result of parsing H266 data. * * @GST_H266_PARSER_OK: The parsing succeeded. * @GST_H266_PARSER_BROKEN_DATA: The data to parse is broken. * @GST_H266_PARSER_BROKEN_LINK: The link to structure needed for the parsing * couldn't be found. * @GST_H266_PARSER_ERROR: An error accured when parsing. * @GST_H266_PARSER_NO_NAL: No nal found during the parsing. * @GST_H266_PARSER_NO_NAL_END: Start of the nal found, but not the end. * * Since: 1.26 */ typedef enum { GST_H266_PARSER_OK, GST_H266_PARSER_BROKEN_DATA, GST_H266_PARSER_BROKEN_LINK, GST_H266_PARSER_ERROR, GST_H266_PARSER_NO_NAL, GST_H266_PARSER_NO_NAL_END } GstH266ParserResult; /** * GstH266Profile: * * H.266 Profiles. * * @GST_H266_PROFILE_MAIN_10: Main 10 profile (A.3.1). * @GST_H266_PROFILE_MAIN_10_STILL_PICTURE: Main 10 Still Picture profile (A.3.1). * @GST_H266_PROFILE_MULTILAYER_MAIN_10: MultiLayer Main 10 profile (A.3.3). * @GST_H266_PROFILE_MULTILAYER_MAIN_10_STILL_PICTURE: MultiLayer Main 10 Still * Picture profile (A.3.3). * @GST_H266_PROFILE_MAIN_10_444: Main 10 4:4:4 profile (A.3.2). * @GST_H266_PROFILE_MAIN_10_444_STILL_PICTURE: Main 10 4:4:4 Still Picture * profile (A.3.2). * @GST_H266_PROFILE_MULTILAYER_MAIN_10_444: MultiLayer Main 10 4:4:4 * profile (A.3.4). * @GST_H266_PROFILE_MULTILAYER_MAIN_10_444_STILL_PICTURE: MultiLayer Main 10 * 4:4:4 Still Picture profile (A.3.4). * @GST_H266_PROFILE_MAIN_12: Main 12 profile (A.3.5). * @GST_H266_PROFILE_MAIN_12_444: Main 12 4:4:4 profile (A.3.5). * @GST_H266_PROFILE_MAIN_16_444: Main 16 4:4:4 profile (A.3.5). * @GST_H266_PROFILE_MAIN_12_INTRA: Main 12 Intra profile (A.3.5). * @GST_H266_PROFILE_MAIN_12_444_INTRA: Main 12 4:4:4 Intra profile (A.3.5). * @GST_H266_PROFILE_MAIN_16_444_INTRA: Main 16 4:4:4 Intra profile (A.3.5). * @GST_H266_PROFILE_MAIN_12_STILL_PICTURE: Main 12 Still Picture profile (A.3.5). * @GST_H266_PROFILE_MAIN_12_444_STILL_PICTURE: Main 12 4:4:4 Still Picture * profile (A.3.5). * @GST_H266_PROFILE_MAIN_16_444_STILL_PICTURE: Main 16 4:4:4 Still Picture * profile (A.3.5). * * Since: 1.26 */ typedef enum { GST_H266_PROFILE_INVALID = -1, GST_H266_PROFILE_NONE = 0, GST_H266_PROFILE_INTRA = 8, GST_H266_PROFILE_STILL_PICTURE = 64, GST_H266_PROFILE_MAIN_10 = 1, GST_H266_PROFILE_MAIN_10_STILL_PICTURE = GST_H266_PROFILE_MAIN_10 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MULTILAYER_MAIN_10 = 17, GST_H266_PROFILE_MULTILAYER_MAIN_10_STILL_PICTURE = GST_H266_PROFILE_MULTILAYER_MAIN_10 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MAIN_10_444 = 33, GST_H266_PROFILE_MAIN_10_444_STILL_PICTURE = GST_H266_PROFILE_MAIN_10_444 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MULTILAYER_MAIN_10_444 = 49, GST_H266_PROFILE_MULTILAYER_MAIN_10_444_STILL_PICTURE = GST_H266_PROFILE_MULTILAYER_MAIN_10_444 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MAIN_12 = 2, GST_H266_PROFILE_MAIN_12_444 = 34, GST_H266_PROFILE_MAIN_16_444 = 35, GST_H266_PROFILE_MAIN_12_INTRA = GST_H266_PROFILE_MAIN_12 | GST_H266_PROFILE_INTRA, GST_H266_PROFILE_MAIN_12_444_INTRA = GST_H266_PROFILE_MAIN_12_444 | GST_H266_PROFILE_INTRA, GST_H266_PROFILE_MAIN_16_444_INTRA = GST_H266_PROFILE_MAIN_16_444 | GST_H266_PROFILE_INTRA, GST_H266_PROFILE_MAIN_12_STILL_PICTURE = GST_H266_PROFILE_MAIN_12 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MAIN_12_444_STILL_PICTURE = GST_H266_PROFILE_MAIN_12_444 | GST_H266_PROFILE_STILL_PICTURE, GST_H266_PROFILE_MAIN_16_444_STILL_PICTURE = GST_H266_PROFILE_MAIN_16_444 | GST_H266_PROFILE_STILL_PICTURE, /* end of the profiles */ GST_H266_PROFILE_MAX } GstH266Profile; /** * GstH266Level: * * H.266 level. * * Since: 1.26 */ typedef enum { GST_H266_LEVEL_L1_0 = 16, GST_H266_LEVEL_L2_0 = 32, GST_H266_LEVEL_L2_1 = 35, GST_H266_LEVEL_L3_0 = 48, GST_H266_LEVEL_L3_1 = 51, GST_H266_LEVEL_L4_0 = 64, GST_H266_LEVEL_L4_1 = 67, GST_H266_LEVEL_L5_0 = 80, GST_H266_LEVEL_L5_1 = 83, GST_H266_LEVEL_L5_2 = 86, GST_H266_LEVEL_L6_0 = 96, GST_H266_LEVEL_L6_1 = 99, GST_H266_LEVEL_L6_2 = 102, GST_H266_LEVEL_L6_3 = 105, } GstH266Level; /** * GstH266NalUnitType: * * Indicates the types of H266 Nal Units as * table 5 - NAL unit type codes and NAL unit type classes. * * @GST_H266_NAL_SLICE_TRAIL: Coded slice of a trailing picture or subpicture. * @GST_H266_NAL_SLICE_STSA: Coded slice of an STSA picture or subpicture. * @GST_H266_NAL_SLICE_RADL: Coded slice of a RADL picture or subpicture. * @GST_H266_NAL_SLICE_RASL: Coded slice of a RASL picture or subpicture. * @GST_H266_NAL_SLICE_IDR_W_RADL: Coded slice of an IDR picture or subpicture. * @GST_H266_NAL_SLICE_IDR_N_LP: Coded slice of an IDR picture or subpicture. * @GST_H266_NAL_SLICE_CRA: Coded slice of a CRA picture or subpicture. * @GST_H266_NAL_SLICE_GDR: Coded slice of a GDR picture or subpicture. * @GST_H266_NAL_OPI: Operating point information. * @GST_H266_NAL_DCI: Decoding capability information. * @GST_H266_NAL_VPS: Video parameter set(VPS). * @GST_H266_NAL_SPS: Sequence parameter set (SPS). * @GST_H266_NAL_PPS: Picture parameter set (PPS). * @GST_H266_NAL_PREFIX_APS: Prefix Adaptation parameter set (APS). * @GST_H266_NAL_SUFFIX_APS: Suffix Adaptation parameter set (APS). * @GST_H266_NAL_PH: Picture header (PH). * @GST_H266_NAL_AUD: AU delimiter. * @GST_H266_NAL_EOS: End of sequence (EOS). * @GST_H266_NAL_EOB: End of bitstream (EOB). * @GST_H266_NAL_PREFIX_SEI: Prefix Supplemental enhancement information. * @GST_H266_NAL_SUFFIX_SEI: Suffix Suppliemental enhancement information. * @GST_H266_NAL_FD: Filler data (FD). * * Since: 1.26 */ typedef enum { GST_H266_NAL_SLICE_TRAIL = 0, GST_H266_NAL_SLICE_STSA = 1, GST_H266_NAL_SLICE_RADL = 2, GST_H266_NAL_SLICE_RASL = 3, GST_H266_NAL_SLICE_IDR_W_RADL = 7, GST_H266_NAL_SLICE_IDR_N_LP = 8, GST_H266_NAL_SLICE_CRA = 9, GST_H266_NAL_SLICE_GDR = 10, GST_H266_NAL_OPI = 12, GST_H266_NAL_DCI = 13, GST_H266_NAL_VPS = 14, GST_H266_NAL_SPS = 15, GST_H266_NAL_PPS = 16, GST_H266_NAL_PREFIX_APS = 17, GST_H266_NAL_SUFFIX_APS = 18, GST_H266_NAL_PH = 19, GST_H266_NAL_AUD = 20, GST_H266_NAL_EOS = 21, GST_H266_NAL_EOB = 22, GST_H266_NAL_PREFIX_SEI = 23, GST_H266_NAL_SUFFIX_SEI = 24, GST_H266_NAL_FD = 25, } GstH266NalUnitType; /** * GstH266SEIPayloadType: * * The type of SEI message. * More other SEIs are specified in Rec.ITU-T H.274 | ISO/IEC 23002-7. * * @GST_H266_SEI_BUF_PERIOD: Buffering Period SEI Message. * @GST_H266_SEI_PIC_TIMING: Picture Timing SEI Message. * @GST_H266_SEI_REGISTERED_USER_DATA: Registered user data. * @GST_H266_SEI_USER_DATA_UNREGISTERED: User data Unregistered. * @GST_H266_SEI_DU_INFO: DU Information SEI Message. * @GST_H266_SEI_SCALABLE_NETING: Scalable Nesting SEI Message. * @GST_H266_SEI_FRAME_FIELD_INFO: Frame Field Info SEI Message. * @GST_H266_SEI_SUBPIC_LEVEL_INFO: Subpicture Level Information SEI. * * Since: 1.26 */ typedef enum { GST_H266_SEI_BUF_PERIOD = 0, GST_H266_SEI_PIC_TIMING = 1, GST_H266_SEI_REGISTERED_USER_DATA = 4, GST_H266_SEI_USER_DATA_UNREGISTERED = 5, GST_H266_SEI_DU_INFO = 130, GST_H266_SEI_SCALABLE_NESTING = 133, GST_H266_SEI_FRAME_FIELD_INFO = 168, GST_H266_SEI_SUBPIC_LEVEL_INFO = 203, /* and more... */ } GstH266SEIPayloadType; /** * GstH266SliceType: * * Types of Picture slice. * * @GST_H266_B_SLICE: B slice type. * @GST_H266_P_SLICE: P slice type. * @GST_H266_I_SLICE: I slice type. * * Since: 1.26 */ typedef enum { GST_H266_B_SLICE = 0, GST_H266_P_SLICE = 1, GST_H266_I_SLICE = 2 } GstH266SliceType; /** * GstH266APSType: * * Indicates the types of Adaptation parameter set (APS) as * Table 6 - APS parameters type codes and types of APS parameters. * * @GST_H266_ALF_APS: ALF parameters. * @GST_H266_LMCS_APS: LMCS parameters. * @GST_H266_SCALING_APS: Scaling list parameters. * * Since: 1.26 */ typedef enum { GST_H266_ALF_APS = 0, GST_H266_LMCS_APS = 1, GST_H266_SCALING_APS = 2, /* end of the aps type */ GST_H266_APS_TYPE_MAX = 3 } GstH266APSType; typedef struct _GstH266Parser GstH266Parser; typedef struct _GstH266NalUnit GstH266NalUnit; typedef struct _GstH266VPS GstH266VPS; typedef struct _GstH266SPS GstH266SPS; typedef struct _GstH266PPS GstH266PPS; typedef struct _GstH266APS GstH266APS; typedef struct _GstH266ProfileTierLevel GstH266ProfileTierLevel; typedef struct _GstH266GeneralConstraintsInfo GstH266GeneralConstraintsInfo; typedef struct _GstH266DPBParameters GstH266DPBParameters; typedef struct _GstH266GeneralHRDParameters GstH266GeneralHRDParameters; typedef struct _GstH266OLSHRDParameters GstH266OLSHRDParameters; typedef struct _GstH266SubLayerHRDParameters GstH266SubLayerHRDParameters; typedef struct _GstH266HRDParams GstH266HRDParams; typedef struct _GstH266VUIParams GstH266VUIParams; typedef struct _GstH266SPSRangeExtensionParams GstH266SPSRangeExtensionParams; typedef struct _GstH266ALF GstH266ALF; typedef struct _GstH266LMCS GstH266LMCS; typedef struct _GstH266ScalingList GstH266ScalingList; typedef struct _GstH266PredWeightTable GstH266PredWeightTable; typedef struct _GstH266RefPicListStruct GstH266RefPicListStruct; typedef struct _GstH266RefPicLists GstH266RefPicLists; typedef struct _GstH266SliceHdr GstH266SliceHdr; typedef struct _GstH266PicHdr GstH266PicHdr; typedef struct _GstH266AUD GstH266AUD; typedef struct _GstH266OPI GstH266OPI; typedef struct _GstH266DCI GstH266DCI; typedef struct _GstH266BufferingPeriod GstH266BufferingPeriod; typedef struct _GstH266PicTiming GstH266PicTiming; typedef struct _GstH266DUInfo GstH266DUInfo; typedef struct _GstH266ScalableNesting GstH266ScalableNesting; typedef struct _GstH266SubPicLevelInfo GstH266SubPicLevelInfo; typedef struct _GstH266FrameFieldInfo GstH266FrameFieldInfo; typedef struct _GstH266SEIMessage GstH266SEIMessage; /** * GstH266NalUnit: * * Structure defining the H266 Nal unit headers. * * @type: A #GstH266NalUnitType. * @layer_id: A nal unit layer id. * @temporal_id_plus1: A nal unit temporal identifier. * @size: The size of the nal unit starting from @offset. * @offset: The offset of the actual start of the nal unit. * @sc_offset:The offset of the start code of the nal unit. * @valid: If the nal unit is valid, which mean it has * already been parsed. * @data: The data from which the Nalu has been parsed. * @header_bytes: The size of the NALU header in bytes. * * Since: 1.26 */ struct _GstH266NalUnit { guint8 type; guint8 layer_id; guint8 temporal_id_plus1; /* calculated values */ guint size; guint offset; guint sc_offset; gboolean valid; guint8 *data; guint8 header_bytes; }; /** * GstH266GeneralConstraintsInfo: * * Structure defining the H266 general constraints info. * * @present_flag: specifies whether additional syntax elements are present. * @intra_only_constraint_flag: specifies whether sh_slice_type for all slices * in OlsInScope shall be equal to 2. * @all_layers_independent_constraint_flag: specifies whether the * vps_all_independent_layers_flag for all pictures in OlsInScope * shall be equal to 1. * @one_au_only_constraint_flag: specifies whether there is only one * AU in OlsInScope. * @sixteen_minus_max_bitdepth_constraint_idc: specifies whether * sps_bitdepth_minus8 plus 8 for all pictures in OlsInScope shall be in the * range of 0 to 16 - gci_sixteen_minus_max_bitdepth_constraint_idc, inclusive. * @three_minus_max_chroma_format_constraint_idc: specifies whether the * sps_chroma_format_idc for all pictures in OlsInScope shall be in the range * of 0 to 3 - gci_three_minus_max_chroma_format_constraint_idc, inclusive. * @no_mixed_nalu_types_in_pic_constraint_flag: specifies whether the * pps_mixed_nalu_types_in_pic_flag for all pictures in OlsInScope shall * be equal to 0. * @no_trail_constraint_flag: specifies whether there shall be no NAL unit * with nuh_unit_type equal to TRAIL_NUT present in OlsInScope. * @no_stsa_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to STSA_NUT present in OlsInScope. * @no_rasl_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to RASL_NUT present in OlsInScope. * @no_radl_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to RADL_NUT present in OlsInScope. * @no_idr_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to IDR_W_RADL or IDR_N_LP present in OlsInScope. * @no_cra_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to CRA_NUT present in OlsInScope. * @no_gdr_constraint_flag: specifies whether sps_gdr_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_aps_constraint_flag: specifies whether there shall be no NAL unit with * nuh_unit_type equal to PREFIX_APS_NUT or SUFFIX_APS_NUT present in * OlsInScope. * @no_idr_rpl_constraint_flag: specifies whether sps_idr_rpl_present_flag for * all pictures in OlsInScope shall be equal to 0. * @one_tile_per_pic_constraint_flag: specifies whether each picture in * OlsInScope shall contain only one tile. * @pic_header_in_slice_header_constraint_flag: specifies whether each picture * in OlsInScope shall contain only one slice and the value of * sh_picture_header_in_slice_header_flag in each slice in OlsInScope shall * be equal to 1. * @one_slice_per_pic_constraint_flag: specifies whether each picture in * OlsInScope shall contain only one slice. * @no_rectangular_slice_constraint_flag: specifies whether pps_rect_slice_flag * for all pictures in OlsInScope shall be equal to 0. * @one_slice_per_subpic_constraint_flag: specifies whether the value of * pps_single_slice_per_subpic_flag for all pictures in OlsInScope shall * be equal to 1. * @no_subpic_info_constraint_flag: specifies whether sps_subpic_info_present_flag * for all pictures in OlsInScope shall be equal to 0. * @three_minus_max_log2_ctu_size_constraint_idc: specifies whether * sps_log2_ctu_size_minus5 for all pictures in OlsInScope shall be in the * range of 0 to 3-gci_three_minus_max_log2_ctu_size_constraint_idc, inclusive. * @no_partition_constraints_override_constraint_flag: specifies whether * sps_partition_constraints_override_enabled_flag for all pictures in * OlsInScope shall be equal to 0. * @no_mtt_constraint_flag: specifies whether * sps_max_mtt_hierarchy_depth_intra_slice_luma, * sps_max_mtt_hierarchy_depth_inter_slice, and * sps_max_mtt_hierarchy_depth_intra_slice_chroma for all pictures in * OlsInScope shall be equal to 0. * @no_qtbtt_dual_tree_intra_constraint_flag: specifies whether * sps_qtbtt_dual_tree_intra_flag for all pictures in OlsInScope shall * be equal to 0. * @no_palette_constraint_flag: specifies whether sps_palette_enabled_flag * for all pictures in OlsInScope shall be equal to 0. * @no_ibc_constraint_flag: specifies whether sps_ibc_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_isp_constraint_flag: specifies whether sps_isp_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_mrl_constraint_flag: specifies whether sps_mrl_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_mip_constraint_flag: specifies whether sps_mip_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_cclm_constraint_flag: specifies whether sps_cclm_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_ref_pic_resampling_constraint_flag: specifies whether * sps_ref_pic_resampling_enabled_flag for all pictures in OlsInScope shall * be equal to 0. * @no_res_change_in_clvs_constraint_flag: specifies whether * sps_res_change_in_clvs_allowed_flag for all pictures in OlsInScope shall * be equal to 0. * @no_weighted_prediction_constraint_flag: specifies whether * sps_weighted_pred_flag and sps_weighted_bipred_flag for all pictures in * OlsInScope shall both be equal to 0. * @no_ref_wraparound_constraint_flag: specifies whether * sps_ref_wraparound_enabled_flag for all pictures in OlsInScope shall be * equal to 0. * @no_temporal_mvp_constraint_flag: specifies whether * sps_temporal_mvp_enabled_flag for all pictures in OlsInScope shall be * equal to 0. * @no_sbtmvp_constraint_flag: specifies whether sps_sbtmvp_enabled_flag * for all pictures in OlsInScope shall be equal to 0. * @no_amvr_constraint_flag: specifies whether sps_amvr_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_bdof_constraint_flag: specifies whether sps_bdof_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_smvd_constraint_flag: specifies whether sps_smvd_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_dmvr_constraint_flag: specifies whether sps_dmvr_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_mmvd_constraint_flag: specifies whether sps_mmvd_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_affine_motion_constraint_flag: specifies whether sps_affine_enabled_flag * for all pictures in OlsInScope shall be equal to 0. * @no_prof_constraint_flag: specifies whether sps_affine_prof_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_bcw_constraint_flag: specifies whether sps_bcw_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_ciip_constraint_flag: specifies whether sps_ciip_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_gpm_constraint_flag: specifies whether sps_gpm_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_luma_transform_size_64_constraint_flag: specifies whether * sps_max_luma_transform_size_64_flag for all pictures in OlsInScope shall * be equal to 0. * @no_transform_skip_constraint_flag: specifies whether * sps_transform_skip_enabled_flag for all pictures in OlsInScope shall * be equal to 0. * @no_bdpcm_constraint_flag: specifies whether sps_bdpcm_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_mts_constraint_flag: specifies whether sps_mts_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_lfnst_constraint_flag: specifies whether sps_lfnst_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_joint_cbcr_constraint_flag: specifies whether sps_joint_cbcr_enabled_flag * for all pictures in OlsInScope shall be equal to 0. * @no_sbt_constraint_flag: specifies whether sps_sbt_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_act_constraint_flag: specifies whether sps_act_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_explicit_scaling_list_constraint_flag: specifies whether * sps_explicit_scaling_list_enabled_flag for all pictures in OlsInScope shall * be equal to 0. * @no_dep_quant_constraint_flag: specifies whether sps_dep_quant_enabled_flag * for all pictures in OlsInScope shall be equal to 0. * @no_sign_data_hiding_constraint_flag: specifies whether * sps_sign_data_hiding_enabled_flag for all pictures in OlsInScope shall * be equal to 0. * @no_cu_qp_delta_constraint_flag: specifies whether * pps_cu_qp_delta_enabled_flag for all pictures in OlsInScope shall be * equal to 0. * @no_chroma_qp_offset_constraint_flag: specifies whether * pps_cu_chroma_qp_offset_list_enabled_flag for all pictures in OlsInScope * shall be equal to 0. * @no_sao_constraint_flag: specifies whether sps_sao_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_alf_constraint_flag: specifies whether sps_alf_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_ccalf_constraint_flag: specifies whether sps_ccalf_enabled_flag for * all pictures in OlsInScope shall be equal to 0. * @no_lmcs_constraint_flag: specifies whether sps_lmcs_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_ladf_constraint_flag: specifies whether sps_ladf_enabled_flag for all * pictures in OlsInScope shall be equal to 0. * @no_virtual_boundaries_constraint_flag: specifies whether * sps_virtual_boundaries_enabled_flag for all pictures in OlsInScope shall * be equal to 0. * @all_rap_pictures_constraint_flag: specifies whether all pictures in * OlsInScope are GDR pictures with ph_recovery_poc_cnt equal to 0 or IRAP * pictures. * @no_extended_precision_processing_constraint_flag: specifies whether * sps_extended_precision_flag for all pictures in OlsInScope shall be * equal to 0. * @no_ts_residual_coding_rice_constraint_flag: specifies whether * sps_ts_residual_coding_rice_present_in_sh_flag for all pictures in * OlsInScope should be equal to 0. * @no_rrc_rice_extension_constraint_flag: specifies whether * sps_rrc_rice_extension_flag for all pictures in OlsInScope shall be * equal to 0. * @no_persistent_rice_adaptation_constraint_flag: specifies whether * sps_persistent_rice_adaptation_enabled_flag for all pictures in OlsInScope * shall be equal to 0. * @no_reverse_last_sig_coeff_constraint_flag: specifies whether * sps_reverse_last_sig_coeff_enabled_flag for all pictures in OlsInScope * shall be equal to 0. * @reserved_zero_bit: the reserved bits. * * Since: 1.26 */ struct _GstH266GeneralConstraintsInfo { guint8 present_flag; /* general */ guint8 intra_only_constraint_flag; guint8 all_layers_independent_constraint_flag; guint8 one_au_only_constraint_flag; /* picture format */ guint8 sixteen_minus_max_bitdepth_constraint_idc; guint8 three_minus_max_chroma_format_constraint_idc; /* NAL unit type related */ guint8 no_mixed_nalu_types_in_pic_constraint_flag; guint8 no_trail_constraint_flag; guint8 no_stsa_constraint_flag; guint8 no_rasl_constraint_flag; guint8 no_radl_constraint_flag; guint8 no_idr_constraint_flag; guint8 no_cra_constraint_flag; guint8 no_gdr_constraint_flag; guint8 no_aps_constraint_flag; guint8 no_idr_rpl_constraint_flag; /* tile, slice, subpicture partitioning */ guint8 one_tile_per_pic_constraint_flag; guint8 pic_header_in_slice_header_constraint_flag; guint8 one_slice_per_pic_constraint_flag; guint8 no_rectangular_slice_constraint_flag; guint8 one_slice_per_subpic_constraint_flag; guint8 no_subpic_info_constraint_flag; /* CTU and block partitioning */ guint8 three_minus_max_log2_ctu_size_constraint_idc; guint8 no_partition_constraints_override_constraint_flag; guint8 no_mtt_constraint_flag; guint8 no_qtbtt_dual_tree_intra_constraint_flag; /* intra */ guint8 no_palette_constraint_flag; guint8 no_ibc_constraint_flag; guint8 no_isp_constraint_flag; guint8 no_mrl_constraint_flag; guint8 no_mip_constraint_flag; guint8 no_cclm_constraint_flag; /* inter */ guint8 no_ref_pic_resampling_constraint_flag; guint8 no_res_change_in_clvs_constraint_flag; guint8 no_weighted_prediction_constraint_flag; guint8 no_ref_wraparound_constraint_flag; guint8 no_temporal_mvp_constraint_flag; guint8 no_sbtmvp_constraint_flag; guint8 no_amvr_constraint_flag; guint8 no_bdof_constraint_flag; guint8 no_smvd_constraint_flag; guint8 no_dmvr_constraint_flag; guint8 no_mmvd_constraint_flag; guint8 no_affine_motion_constraint_flag; guint8 no_prof_constraint_flag; guint8 no_bcw_constraint_flag; guint8 no_ciip_constraint_flag; guint8 no_gpm_constraint_flag; /* transform, quantization, residual */ guint8 no_luma_transform_size_64_constraint_flag; guint8 no_transform_skip_constraint_flag; guint8 no_bdpcm_constraint_flag; guint8 no_mts_constraint_flag; guint8 no_lfnst_constraint_flag; guint8 no_joint_cbcr_constraint_flag; guint8 no_sbt_constraint_flag; guint8 no_act_constraint_flag; guint8 no_explicit_scaling_list_constraint_flag; guint8 no_dep_quant_constraint_flag; guint8 no_sign_data_hiding_constraint_flag; guint8 no_cu_qp_delta_constraint_flag; guint8 no_chroma_qp_offset_constraint_flag; /* loop fitler */ guint8 no_sao_constraint_flag; guint8 no_alf_constraint_flag; guint8 no_ccalf_constraint_flag; guint8 no_lmcs_constraint_flag; guint8 no_ladf_constraint_flag; guint8 no_virtual_boundaries_constraint_flag; /* additional bits */ guint8 all_rap_pictures_constraint_flag; guint8 no_extended_precision_processing_constraint_flag; guint8 no_ts_residual_coding_rice_constraint_flag; guint8 no_rrc_rice_extension_constraint_flag; guint8 no_persistent_rice_adaptation_constraint_flag; guint8 no_reverse_last_sig_coeff_constraint_flag; /* reserved for future use */ guint8 reserved_zero_bit[64]; }; /** * GstH266ProfileTierLevel: * * Structure defining the H266 profile, tier and level. * * @profile_idc: the profile id. * @tier_flag: specifies the main tier or high tier. * @level_idc: indicates a level to which OlsInScope conforms * as specified in Annex A. * @frame_only_constraint_flag: specifies whether sps_field_seq_flag for all * pictures in OlsInScope shall be equal to 0. * @multilayer_enabled_flag: specifies whether the CVSs of OlsInScope * might contain more than one layer. * @general_constraints_info: the #GstH266GeneralConstraintsInfo contains * the general constraints info. * @sublayer_level_present_flag: specifies whether level information is present * in the profile_tier_level syntax structure for the sublayer representation. * @sublayer_level_idc: the sublayer level idc. * @num_sub_profiles: specifies the number of the general_sub_profile_idc[i] * syntax elements. * @sub_profile_idc: specifies the i-th interoperability indicator registered * as specified by Rec. ITU-T T.35 * * Since: 1.26 */ struct _GstH266ProfileTierLevel { GstH266Profile profile_idc; guint8 tier_flag; guint8 level_idc; guint8 frame_only_constraint_flag; guint8 multilayer_enabled_flag; GstH266GeneralConstraintsInfo general_constraints_info; guint8 sublayer_level_present_flag[GST_H266_MAX_SUBLAYERS - 1]; guint8 sublayer_level_idc[GST_H266_MAX_SUBLAYERS - 1]; guint8 num_sub_profiles; GstH266Profile sub_profile_idc[GST_H266_MAX_SUB_PROFILES]; guint8 ptl_reserved_zero_bit; }; /** * GstH266DPBParameters: * * Structure defining the H266 DPB parameters. * * @max_dec_pic_buffering_minus1: specifies the maximum required size of the * DPB in units of picture storage buffers. * @max_num_reorder_pics: specifies the maximum allowed number of pictures of * the OLS that can precede any picture in the OLS in decoding order and * follow that picture in output. * @max_latency_increase_plus1: used to compute the value of MaxLatencyPictures, * which specifies the maximum number of pictures in the OLS. * * Since: 1.26 */ struct _GstH266DPBParameters { guint8 max_dec_pic_buffering_minus1[GST_H266_MAX_SUBLAYERS]; guint8 max_num_reorder_pics[GST_H266_MAX_SUBLAYERS]; guint8 max_latency_increase_plus1[GST_H266_MAX_SUBLAYERS]; }; /** * GstH266GeneralHRDParameters: * * Structure defining the H266 HDR parameters. * * @num_units_in_tick: the number of time units of a clock operating at the * frequency time_scale. * @time_scale: number of time units that pass in one second. * @general_nal_hrd_params_present_flag: specifies whether NAL HRD parameters * are present in the general_timing_hrd_parameters syntax structure. * @general_vcl_hrd_params_present_flag: specifies whether VCL HRD parameters * are present in the general_timing_hrd_parameters syntax structure. * @general_same_pic_timing_in_all_ols_flag: specifies whether the * non-scalable-nested PT SEI message in each AU applies to the AU for any * OLS in the bitstream and no scalable-nested PT SEI messages are present. * @general_du_hrd_params_present_flag: specifies whether DU level HRD * parameters are present and the HRD could operate at the AU level or DU level. * @tick_divisor_minus2: specifies the clock sub-tick. * @bit_rate_scale: specifies the maximum input bit rate of the CPB. * @cpb_size_scale: specifies the CPB size of the CPB. * @cpb_size_du_scale: specifies the CPB size of the CPB at du level. * @hrd_cpb_cnt_minus1: plus 1 specifies the number of alternative CPB * delivery schedules. * * Since: 1.26 */ struct _GstH266GeneralHRDParameters { guint32 num_units_in_tick; guint32 time_scale; guint8 general_nal_hrd_params_present_flag; guint8 general_vcl_hrd_params_present_flag; guint8 general_same_pic_timing_in_all_ols_flag; guint8 general_du_hrd_params_present_flag; guint8 tick_divisor_minus2; guint8 bit_rate_scale; guint8 cpb_size_scale; guint8 cpb_size_du_scale; guint8 hrd_cpb_cnt_minus1; }; /** * GstH266SubLayerHRDParameters: * * Structure defining the H266 sub layer HDR parameters. * * @bit_rate_value_minus1: specifies the maximum input bit rate for the CPB. * @cpb_size_value_minus1: together with cpb_size_scale to specify the CPB size. * @cpb_size_du_value_minus1: together with cpb_size_du_scale to specify * the CPB size. * @bit_rate_du_value_minus1: specifies the maximum input bit rate for the CPB. * @cbr_flag: specifies whether to decode this bitstream by the HRD using * the CPB specification. * @bit_rate: the calculated bit rate. * @cpb_size: the calculated cpb size. * * Since: 1.26 */ struct _GstH266SubLayerHRDParameters { guint32 bit_rate_value_minus1[GST_H266_MAX_CPB_CNT]; guint32 cpb_size_value_minus1[GST_H266_MAX_CPB_CNT]; guint32 cpb_size_du_value_minus1[GST_H266_MAX_CPB_CNT]; guint32 bit_rate_du_value_minus1[GST_H266_MAX_CPB_CNT]; guint8 cbr_flag[GST_H266_MAX_CPB_CNT]; /* calculated values */ guint32 bit_rate[GST_H266_MAX_CPB_CNT]; guint32 cpb_size[GST_H266_MAX_CPB_CNT]; }; /** * GstH266OLSHRDParameters: * * Structure defining the H266 OLS HDR parameters. * * @fixed_pic_rate_general_flag: indicates the temporal distance between the * HRD output times of consecutive pictures in output order is constrained as * specified in this clause using the variable DpbOutputElementalInterval[n]. * @fixed_pic_rate_within_cvs_flag: indicates the temporal distance between the * HRD output times of consecutive pictures in output order is constrained as * specified in this clause using the variable DpbOutputElementalInterval[n]. * @elemental_duration_in_tc_minus1: specifies the temporal distance between * the elemental units that specify the HRD output times of consecutive * pictures in output order. * @low_delay_hrd_flag: specifies the HRD operational mode as specified * in Annex C. * @nal_sub_layer_hrd_parameters: sub layer nal #GstH266SubLayerHRDParameters. * @vcl_sub_layer_hrd_parameters: sub layer vcl #GstH266SubLayerHRDParameters. * * Since: 1.26 */ struct _GstH266OLSHRDParameters { guint8 fixed_pic_rate_general_flag[GST_H266_MAX_SUBLAYERS]; guint8 fixed_pic_rate_within_cvs_flag[GST_H266_MAX_SUBLAYERS]; guint16 elemental_duration_in_tc_minus1[GST_H266_MAX_SUBLAYERS]; guint8 low_delay_hrd_flag[GST_H266_MAX_SUBLAYERS]; GstH266SubLayerHRDParameters nal_sub_layer_hrd_parameters[GST_H266_MAX_SUBLAYERS]; GstH266SubLayerHRDParameters vcl_sub_layer_hrd_parameters[GST_H266_MAX_SUBLAYERS]; }; /** * GstH266VPS: * * Structure defining the H266 VPS. * * @vps_id: provides an identifier for the VPS for reference by other syntax * elements. * @max_layers_minus1: specifies the number of layers specified by the VPS. * @max_sublayers_minus1: specifies the maximum number of temporal sublayers * that may be present in a layer specified by the VPS. * @default_ptl_dpb_hrd_max_tid_flag: specifies whether the syntax elements * vps_ptl_max_tid, vps_dpb_max_tid, and vps_hrd_max_tid are present. * @all_independent_layers_flag: specifies whether all layers specified by the * VPS are independently coded without using inter-layer prediction. * @layer_id: specifies the nuh_layer_id value of the i-th layer. * @independent_layer_flag: specifies whether the layer with index i does not * use inter-layer prediction. * @max_tid_ref_present_flag: specifies whether the syntax element * vps_max_tid_il_ref_pics_plus1 could be present. * @direct_ref_layer_flag: specifies whether the layer with index j is not a * direct reference layer for the layer with index i. * @max_tid_il_ref_pics_plus1: specifies whether the pictures of the j-th layer * that are neither IRAP pictures nor GDR pictures with ph_recovery_poc_cnt * equal to 0 are not used as ILRPs for decoding of pictures of the i-th layer. * @each_layer_is_an_ols_flag: specifies whether each OLS specified by the VPS * contains only one layer and each layer specified by the VPS is an OLS with * the single included layer being the only output layer. * @ols_mode_idc: specifies whether the total number of OLSs specified by the * VPS is equal to vps_max_layers_minus1 + 1. * @total_num_olss: specifies the total number of OLSs specified by the VPS. * @num_multi_layer_olss: specifies the number of multi-layer OLSs (i.e., OLSs * that contain more than one layer). * @multi_layer_ols_idx: specifies the index to the list of multi-layer OLSs * for the i-th OLS. * @num_layers_in_ols: specifies the number of layers in the i-th OLS. * @layer_id_in_ols: specifies the nuh_layer_id value of the j-th layer in * the i-th OLS. * @num_output_layer_sets_minus2: specifies the total number of OLSs * specified by the VPS when vps_ols_mode_idc is equal to 2. * @ols_output_layer_flag: specifies whether the layer with nuh_layer_id * equal to vps_layer_id[j] is an output layer of the i-th OLS when * vps_ols_mode_idc is equal to 2. * @num_output_layers_in_ols: specifies the number of output layers in * the i-th OLS. * @output_layer_id_in_ols: specifies the nuh_layer_id value of the j-th * output layer in the i-th OLS. * @num_sub_layers_in_layer_in_ols: specifies the number of sublayers in the * j-th layer in the i-th OLS. * @num_ptls_minus1: specifies the number of profile_tier_level * syntax structures in the VPS. * @pt_present_flag: specifies whether profile, tier, and general constraints * information are present in the i-th profile_tier_level syntax structure * in the VPS. * @ptl_max_tid: specifies the TemporalId of the highest sublayer representation. * @profile_tier_level: specifies the profile, tier and level using * #GstH266ProfileTierLevel. * @ols_ptl_idx: specifies the index of the profile_tier_level syntax * structure that applies to the i-th OLS. * @num_dpb_params_minus1: specifies the number of dpb_parameters syntax * strutcures in the VPS. * @sublayer_dpb_params_present_flag: is used to control the presence of * dpb_max_dec_pic_buffering_minus1[j], dpb_max_num_reorder_pics[j], and * dpb_max_latency_increase_plus1[j] syntax elements in the dpb_parameters * syntax strucures in the VPS. * @dpb_max_tid: specifies the TemporalId of the highest sublayer representation * for which the DPB parameters could be present in the i-th dpb_parameters * syntax strutcure in the VPS. * @dpb: the DPB parameters using #GstH266DPBParameters. * @ols_dpb_pic_width: specifies the width of each picture storage buffer for * the i-th multi-layer OLS. * @ols_dpb_pic_height: specifies the height of each picture storage buffer * for the i-th multi-layer OLS. * @ols_dpb_chroma_format: specifies the greatest allowed value of * sps_chroma_format_idc for all SPSs. * @ols_dpb_bitdepth_minus8: specifies the greatest allowed value of * sps_bitdepth_minus8 for all SPSs. * @ols_dpb_params_idx: specifies the index of the dpb_parameters syntax * structure that applies to the i-th multi-layer OLS. * @timing_hrd_params_present_flag: specifies whether the VPS contains a * general_timing_hrd_parameters syntax structure and other HRD parameters. * @general_hrd_params: HRD parameters in #GstH266GeneralHRDParameters. * @sublayer_cpb_params_present_flag: specifies that the i-th * ols_timing_hrd_parameters syntax structure in the VPS contains HRD * parameters for the sublayer representations. * @num_ols_timing_hrd_params_minus1: specifies the number of * ols_timing_hrd_parameters syntax structures present in the VPS. * @hrd_max_tid: specifies the TemporalId of the highest sublayer representation * for which the HRD parameters are contained in the i-th * ols_timing_hrd_parameters syntax structure. * @ols_hrd_params: OLS HRD parameters using #GstH266OLSHRDParameters. * @ols_timing_hrd_idx: specifies the index of the ols_timing_hrd_parameters * syntax structure that applies to the i-th multi-layer OLS. * @extension_flag: specifies whether no vps_extension_data_flag syntax elements * are present in the VPS RBSP syntax structure. * @extension_data: could have any value, it is not defined in this version of * this Specification. * @valid: whether this VPS is valid. * * Since: 1.26 */ struct _GstH266VPS { guint8 vps_id; guint8 max_layers_minus1; guint8 max_sublayers_minus1; guint8 default_ptl_dpb_hrd_max_tid_flag; guint8 all_independent_layers_flag; guint8 layer_id[GST_H266_MAX_LAYERS]; guint8 independent_layer_flag[GST_H266_MAX_LAYERS]; guint8 max_tid_ref_present_flag[GST_H266_MAX_LAYERS]; guint8 direct_ref_layer_flag[GST_H266_MAX_LAYERS][GST_H266_MAX_LAYERS]; guint8 max_tid_il_ref_pics_plus1[GST_H266_MAX_LAYERS][GST_H266_MAX_LAYERS]; guint8 each_layer_is_an_ols_flag; guint8 ols_mode_idc; guint total_num_olss; guint num_multi_layer_olss; guint16 multi_layer_ols_idx[GST_H266_MAX_TOTAL_NUM_OLSS]; guint16 num_layers_in_ols[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 layer_id_in_ols[GST_H266_MAX_TOTAL_NUM_OLSS][GST_H266_MAX_LAYERS]; guint8 num_output_layer_sets_minus2; guint8 ols_output_layer_flag[GST_H266_MAX_TOTAL_NUM_OLSS][GST_H266_MAX_LAYERS]; guint16 num_output_layers_in_ols[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 output_layer_id_in_ols[GST_H266_MAX_TOTAL_NUM_OLSS][GST_H266_MAX_LAYERS]; guint8 num_sub_layers_in_layer_in_ols[GST_H266_MAX_TOTAL_NUM_OLSS][GST_H266_MAX_LAYERS]; guint8 num_ptls_minus1; guint8 pt_present_flag[GST_H266_MAX_PTLS]; guint8 ptl_max_tid[GST_H266_MAX_PTLS]; GstH266ProfileTierLevel profile_tier_level[GST_H266_MAX_PTLS]; guint8 ols_ptl_idx[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 num_dpb_params_minus1; guint8 sublayer_dpb_params_present_flag; guint8 dpb_max_tid[GST_H266_MAX_TOTAL_NUM_OLSS]; GstH266DPBParameters dpb[GST_H266_MAX_TOTAL_NUM_OLSS]; guint16 ols_dpb_pic_width[GST_H266_MAX_TOTAL_NUM_OLSS]; guint16 ols_dpb_pic_height[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 ols_dpb_chroma_format[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 ols_dpb_bitdepth_minus8[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 ols_dpb_params_idx[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 timing_hrd_params_present_flag; GstH266GeneralHRDParameters general_hrd_params; guint8 sublayer_cpb_params_present_flag; guint8 num_ols_timing_hrd_params_minus1; guint8 hrd_max_tid[GST_H266_MAX_TOTAL_NUM_OLSS]; GstH266OLSHRDParameters ols_hrd_params[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 ols_timing_hrd_idx[GST_H266_MAX_TOTAL_NUM_OLSS]; /* Reserve some data for future usage. */ guint8 extension_flag; guint8 extension_data[64]; gboolean valid; }; /** * GstH266RefPicListStruct: * * Structure defining the H266 reference picture list. * * @num_ref_entries: specifies the number of entries in the * ref_pic_list_struct(listIdx, rplsIdx) syntax structure. * @ltrp_in_header_flag: specifies whether the POC LSBs of the LTRP entries * indicated in the ref_pic_list_struct(listIdx, rplsIdx) syntax structure * are present in the same syntax structure. * @inter_layer_ref_pic_flag: specifies whether the i-th entry in the * ref_pic_list_struct(listIdx, rplsIdx) syntax structure is an ILRP entry. * @st_ref_pic_flag: specifies whether the i-th entry in the * ref_pic_list_struct(listIdx, rplsIdx) syntax structure is an STRP entry. * @abs_delta_poc_st: specifies the value of the variable * AbsDeltaPocSt[listIdx][rplsIdx][i]. * @strp_entry_sign_flag: specifies whether DeltaPocValSt[listIdx][rplsIdx] * is greater than or equal to 0. * @rpls_poc_lsb_lt: specifies the value of the picture order count modulo * MaxPicOrderCntLsb of the picture referred to. * @num_short_term_pic: the number of short term reference picture. * @num_long_term_pic: the number long term reference picture. * @num_inter_layer_pic: the number of inter layer reference picture. * @delta_poc_val_st: the calculated DeltaPocValSt value. * * Since: 1.26 */ struct _GstH266RefPicListStruct { guint8 num_ref_entries; guint8 ltrp_in_header_flag; guint8 inter_layer_ref_pic_flag[GST_H266_MAX_REF_ENTRIES]; guint8 st_ref_pic_flag[GST_H266_MAX_REF_ENTRIES]; guint8 abs_delta_poc_st[GST_H266_MAX_REF_ENTRIES]; guint8 strp_entry_sign_flag[GST_H266_MAX_REF_ENTRIES]; guint8 rpls_poc_lsb_lt[GST_H266_MAX_REF_ENTRIES]; guint num_short_term_pic; guint num_long_term_pic; guint num_inter_layer_pic; gint16 delta_poc_val_st[GST_H266_MAX_REF_ENTRIES]; }; /** * GstH266RefPicLists: * * Structure defining the H266 reference picture lists. * * @rpl_sps_flag: specifies whether RPL i in ref_pic_lists is derived based * on one of the ref_pic_list_struct(listIdx, rplsIdx) syntax structures * with listIdx equal to i in the SPS. * @rpl_idx: specifies the index into the list of the * ref_pic_list_struct(listIdx, rplsIdx) syntax structures. * @rpl_ref_list: reference list of #GstH266RefPicListStruct. * @poc_lsb_lt: specifies the value of the picture order count * modulo MaxPicOrderCntLsb. * @delta_poc_msb_cycle_present_flag: specifies whether * delta_poc_msb_cycle_lt[i][j] is present. * @delta_poc_msb_cycle_lt: specifies the value of the variable FullPocLt[i][j]. * * Since: 1.26 */ struct _GstH266RefPicLists { guint8 rpl_sps_flag[2]; guint8 rpl_idx[2]; GstH266RefPicListStruct rpl_ref_list[2]; guint16 poc_lsb_lt[2][GST_H266_MAX_REF_ENTRIES]; guint8 delta_poc_msb_cycle_present_flag[2][GST_H266_MAX_REF_ENTRIES]; guint16 delta_poc_msb_cycle_lt[2][GST_H266_MAX_REF_ENTRIES]; }; /** * GstH266VUIParams: * * Structure defining the H266 VUI parameters. * * @progressive_source_flag: flag to indicate the progressive type of stream. * @interlaced_source_flag: flag to indicate the interlaced type of stream. * @non_packed_constraint_flag: indicate the presence of frame packing * arrangement sei message * @non_projected_constraint_flag: flag to indicate the projected support. * @aspect_ratio_info_present_flag: specifies whether aspect_ratio_idc is present. * @aspect_ratio_constant_flag: specifies whether the ratio is constant. * @aspect_ratio_idc: specifies the value of the sample aspect ratio of * the luma samples. * @sar_width: indicates the horizontal size of the sample aspect ratio. * @sar_height: indicates the vertical size of the sample aspect ratio. * @overscan_info_present_flag: specify whether the overscan_appropriate_flag * is present. * @overscan_appropriate_flag: indicates whether the cropped decoded pictures * output are suitable for display using overscan. * @colour_description_present_flag: specifies whether colour_primaries, * transfer_characteristics and matrix_coefficients are present. * @colour_primaries: indicates the chromaticity coordinates of the source * primaries. * @transfer_characteristics: indicates the opto-electronic * transfer characteristic. * @matrix_coeffs: describes the matrix coefficients used in deriving * luma and chroma signals. * @full_range_flag: indicates the full range of the color. * @chroma_loc_info_present_flag: specifies whether chroma_sample_loc_type_frame, * chroma_sample_loc_type_top_field and chroma_sample_loc_type_bottom_field * are present. * @chroma_sample_loc_type_frame: specify the location of chroma for the frame. * @chroma_sample_loc_type_top_field: specify the location of chroma for the * top field. * @chroma_sample_loc_type_bottom_field: specify the location of chroma for the * bottom field. * @par_n: calculated aspect ratio numerator value. * @par_d: calculated aspect ratio denominator value. * * Since: 1.26 */ struct _GstH266VUIParams { guint8 progressive_source_flag; guint8 interlaced_source_flag; guint8 non_packed_constraint_flag; guint8 non_projected_constraint_flag; guint8 aspect_ratio_info_present_flag; guint8 aspect_ratio_constant_flag; guint8 aspect_ratio_idc; guint16 sar_width; guint16 sar_height; guint8 overscan_info_present_flag; guint8 overscan_appropriate_flag; guint8 colour_description_present_flag; guint8 colour_primaries; guint8 transfer_characteristics; guint8 matrix_coeffs; guint8 full_range_flag; guint8 chroma_loc_info_present_flag; guint8 chroma_sample_loc_type_frame; guint8 chroma_sample_loc_type_top_field; guint8 chroma_sample_loc_type_bottom_field; /* extension_data */ /* calculated values */ guint par_n; guint par_d; }; /** * GstH266SPSRangeExtensionParams: * * Structure defining the H266 SPS range extension parameters. * * @extended_precision_flag: specifies whether an extended dynamic range is * used for transform coefficients. * @ts_residual_coding_rice_present_in_sh_flag: specifies whether * sh_ts_residual_coding_rice_idx_minus1 may be present in slice_header * syntax structures referring to the SPS. * @rrc_rice_extension_flag: specifies whether an alternative Rice parameter * derivation is used. * @persistent_rice_adaptation_enabled_flag: specifies whether Rice parameter * derivation is initialized at the start of each TU using statistics * accumulated from previous TUs. * @reverse_last_sig_coeff_enabled_flag: specifies whether * sh_reverse_last_sig_coeff_flag is present in slice_header syntax * structures referring to the SPS. * * Since: 1.26 */ struct _GstH266SPSRangeExtensionParams { guint8 extended_precision_flag; guint8 ts_residual_coding_rice_present_in_sh_flag; guint8 rrc_rice_extension_flag; guint8 persistent_rice_adaptation_enabled_flag; guint8 reverse_last_sig_coeff_enabled_flag; }; /** * GstH266SPS: * * Structure defining the H266 SPS. * * @nuh_layer_id: specifies the identifier of the layer to which a VCL NAL unit * belongs or the identifier of a layer to which a non-VCL NAL unit applies. * @sps_id: provides an identifier for the SPS for reference by other * syntax elements. * @vps_id: specifies the VPS referred to by this SPS. * @vps: the #GstH266VPS this SPS refers to. * @max_sublayers_minus1: specifies the maximum number of temporal sublayers * that could be present in each CLVS referring to the SPS. * @chroma_format_idc: specifies the chroma sampling relative to the * luma sampling. * @log2_ctu_size_minus5: specifies the luma coding tree block size of each CTU. * @ctu_size: the calculated ctu size. * @ptl_dpb_hrd_params_present_flag: specifies whether a profile_tier_level * syntax structure and a dpb_parameters syntax structure are present * in the SPS. * @dpb: DPB parameters of #GstH266DPBParameters. * @profile_tier_level: the profile tier and level in #GstH266ProfileTierLevel. * @general_hrd_params: HRD parameters of #GstH266GeneralHRDParameters. * @ols_hrd_params: OLS HRD parameters of #GstH266OLSHRDParameters. * @gdr_enabled_flag: specifies whether GDR pictures are enabled and could * be present in the CLVS. * @res_change_in_clvs_allowed_flag: specifies whether the picture spatial * resolution might change within a CLVS. * @ref_pic_resampling_enabled_flag: specifies whether reference picture * resampling is enabled. * @pic_width_max_in_luma_samples: specifies the maximum width, in units of * luma samples, of each decoded picture. * @pic_height_max_in_luma_samples: specifies the maximum height, in units of * luma samples, of each decoded picture. * @conformance_window_flag: indicates whether the conformance cropping window * offset parameters follow next in the SPS. * @conf_win_left_offset: specify left offset of the cropping window that * is applied to pictures. * @conf_win_right_offset: specify right offset of the cropping window that * is applied to pictures. * @conf_win_top_offset: specify top offset of the cropping window that * is applied to pictures. * @conf_win_bottom_offset: specify bottom offset of the cropping window that * is applied to pictures. * @subpic_info_present_flag: specifies whether subpicture information is * present for the CLVS and there might be one or more than one subpicture * in each picture of the CLVS. * @num_subpics_minus1: specifies the number of subpictures in each picture * in the CLVS. * @independent_subpics_flag: specifies whether all subpicture boundaries in * the CLVS are treated as picture boundaries and there is no loop filtering * across the subpicture boundaries. * @subpic_same_size_flag: specifies whether all subpictures in the CLVS have * the same width and height. * @subpic_ctu_top_left_x: specifies horizontal position of top-left CTU of * i-th subpicture in unit of CtbSizeY. * @subpic_ctu_top_left_y: specifies vertical position of top-left CTU of * i-th subpicture in unit of CtbSizeY. * @subpic_width_minus1: specifies the width of the i-th subpicture in units * of CtbSizeY. * @subpic_height_minus1: specifies the height of the i-th subpicture in * units of CtbSizeY. * @subpic_treated_as_pic_flag: specifies whether the i-th subpicture of each * coded picture in the CLVS is treated as a picture. * @loop_filter_across_subpic_enabled_flag: specifies whether in-loop filtering * operations across subpicture boundaries is enabled and might be performed * across the boundaries of the i-th subpicture. * @subpic_id: specifies the subpicture ID of the i-th subpicture. * @subpic_id_len_minus1: specifies the number of bits used to represent the * syntax element sps_subpic_id[i]. * @subpic_id_mapping_explicitly_signalled_flag: specifies whether the * subpicture ID mapping is explicitly signalled. * @subpic_id_mapping_present_flag: specifies whether the subpicture ID mapping * is signalled in the SPS. * @bitdepth_minus8: specifies the bit depth of the samples of the luma and * chroma arrays. * @entropy_coding_sync_enabled_flag: specifies whether a specific synchronization * process for context variables is invoked before decoding the CTU. * @entry_point_offsets_present_flag: specifies whether signalling for entry * point offsets for tiles or tile-specific CTU rows could be present in the * slice headers of pictures. * @log2_max_pic_order_cnt_lsb_minus4: specifies the value of the variable * MaxPicOrderCntLsb. * @poc_msb_cycle_flag: specifies whether the ph_poc_msb_cycle_present_flag * syntax element is present in PH syntax structures. * @poc_msb_cycle_len_minus1: specifies the length, in bits, of the * ph_poc_msb_cycle_val syntax elements. * @num_extra_ph_bytes: specifies the number of bytes of extra bits in the PH * syntax structure for coded pictures. * @extra_ph_bit_present_flag: specifies whether the i-th extra bit is present * in PH syntax structures. * @num_extra_sh_bytes: specifies the number of bytes of extra bits in the * slice headers for coded pictures. * @extra_sh_bit_present_flag: specifies whether the i-th extra bit is present * in the slice headers of pictures. * @sublayer_dpb_params_flag: used to control the presence of * dpb_max_dec_pic_buffering_minus1[i], dpb_max_num_reorder_pics[i], * and dpb_max_latency_increase_plus1[i] syntax elements in the * dpb_parameters syntax strucure. * @log2_min_luma_coding_block_size_minus2: specifies the minimum luma coding * block size. * @partition_constraints_override_enabled_flag: specifies the presence of * ph_partition_constraints_override_flag in PH syntax structures. * @log2_diff_min_qt_min_cb_intra_slice_luma: specifies the default difference * between the base 2 logarithm of the minimum size in luma samples of a luma * leaf block resulting from quadtree splitting of a CTU and the base 2 * logarithm of the minimum coding block size in luma samples. * @max_mtt_hierarchy_depth_intra_slice_luma: specifies the default maximum * hierarchy depth for coding units resulting from multi-type tree splitting * of a quadtree leaf in slices with sh_slice_type equal to 2(I). * @log2_diff_max_bt_min_qt_intra_slice_luma: specifies the default difference * between the base 2 logarithm of the maximum size in luma samples of a luma * coding block that can be split using a binary split and the base 2 logarithm * of the minimum size in luma samples of a luma leaf block resulting from * quadtree splitting. * @log2_diff_max_tt_min_qt_intra_slice_luma: specifies the default difference * between the base 2 logarithm of the maximum size in luma samples of a luma * coding block that can be split using a ternary split and the base 2 * logarithm of the minimum size in luma samples of a luma leaf block resulting * from quadtree splitting. * @qtbtt_dual_tree_intra_flag: specifies whether each CTU is split into coding * units with 64x64 luma samples using an implicit quadtree split, and these * coding units are the root of two separate coding_tree syntax structure for * luma and chroma. * @log2_diff_min_qt_min_cb_intra_slice_chroma: specifies the default difference * between the base 2 logarithm of the minimum size in luma samples of a chroma * leaf block resulting from quadtree splitting of a chroma CTU and the base 2 * logarithm of the minimum coding block size in luma samples for chroma CUs * in slices with sh_slice_type equal to 2(I). * @max_mtt_hierarchy_depth_intra_slice_chroma: specifies the default maximum * hierarchy depth for chroma coding units resulting from multi-type tree * splitting of a chroma quadtree leaf in slices with sh_slice_type equal to 2(I). * @log2_diff_max_bt_min_qt_intra_slice_chroma: specifies the default difference * between the base 2 logarithm of the maximum size in luma samples of a chroma * coding block that can be split using a binary split and the base 2 logarithm * of the minimum size in luma samples of a chroma leaf block resulting from * quadtree splitting of a chroma CTU in slices with sh_slice_type equal to 2(I). * @log2_diff_max_tt_min_qt_intra_slice_chroma: specifies the default difference * between the base 2 logarithm of the maximum size in luma samples of a chroma * coding block that can be split using a ternary split and the base 2 logarithm * of the minimum size in luma samples of a chroma leaf block resulting from * quadtree splitting of a chroma CTU in slices with sh_slice_type equal to 2(I). * @log2_diff_min_qt_min_cb_inter_slice: specifies the default difference between * the base 2 logarithm of the minimum size in luma samples of a luma leaf block * resulting from quadtree splitting of a CTU and the base 2 logarithm of the * minimum luma coding block size in luma samples for luma CUs in slices with * sh_slice_type equal to 0(B) or 1(P). * @max_mtt_hierarchy_depth_inter_slice: specifies the default maximum hierarchy * depth for coding units resulting from multi-type tree splitting of a quadtree * leaf in slices with sh_slice_type equal to 0 (B) or 1 (P). * @log2_diff_max_bt_min_qt_inter_slice: specifies the default difference between * the base 2 logarithm of the maximum size in luma samples of a luma coding * block that can be split using a binary split and the base 2 logarithm of the * minimum size in luma samples of a luma leaf block resulting from quadtree * splitting of a CTU in slices with sh_slice_type equal to 0(B) or 1(P). * @log2_diff_max_tt_min_qt_inter_slice: specifies the default difference between * the base 2 logarithm of the maximum size in luma samples of a luma coding * block that can be split using a ternary split and the base 2 logarithm of * the minimum size in luma samples of a luma leaf block resulting from quadtree * splitting of a CTU in slices with sh_slice_type equal to 0(B) or 1(P). * @max_luma_transform_size_64_flag: specifies whether the maximum transform * size in luma samples is equal to 64. * @transform_skip_enabled_flag: specifies whether transform_skip_flag could be * present in the transform unit syntax. * @log2_transform_skip_max_size_minus2: specifies the maximum block size used * for transform skip. * @bdpcm_enabled_flag: specifies whether intra_bdpcm_luma_flag and * intra_bdpcm_chroma_flag could be present in the coding unit syntax for * intra coding units. * @mts_enabled_flag: specifies whether sps_explicit_mts_intra_enabled_flag * and sps_explicit_mts_inter_enabled_flag are present in the SPS. * @explicit_mts_intra_enabled_flag: specifies whether mts_idx could be present * in the intra coding unit syntax of the CLVS. * @explicit_mts_inter_enabled_flag: specifies whether mts_idx could be present * in the inter coding unit syntax of the CLVS. * @lfnst_enabled_flag: specifies whether lfnst_idx could be present in intra * coding unit syntax. * @joint_cbcr_enabled_flag: specifies whether the joint coding of chroma * residuals is enabled for the CLVS. * @same_qp_table_for_chroma_flag: specifies whether only one chroma QP mapping * table is signalled and this table applies to Cb and Cr residuals and * additionally to joint Cb-Cr residuals. * @qp_table_start_minus26: specifies the starting luma and chroma QP used to * describe the i-th chroma QP mapping table. * @num_points_in_qp_table_minus1: specifies the number of points used to * describe the i-th chroma QP mapping table. * @delta_qp_in_val_minus1: specifies a delta value used to derive the input * coordinate of the j-th pivot point of the i-th chroma QP mapping table. * @delta_qp_diff_val: specifies a delta value used to derive the output * coordinate of the j-th pivot point of the i-th chroma QP mapping table. * @sao_enabled_flag: specifies whether SAO is enabled for the CLVS. * @alf_enabled_flag: specifies whether ALF is enabled for the CLVS. * @ccalf_enabled_flag: specifies whether CCALF is enabled for the CLVS. * @lmcs_enabled_flag: specifies whether LMCS is enabled for the CLVS. * @weighted_pred_flag: specifies whether weighted prediction might be applied * to P slices referring to the SPS. * @weighted_bipred_flag: specifies whether explicit weighted prediction might * be applied to B slices referring to the SPS. * @guint8 long_term_ref_pics_flag: specifies whether no LTRP is used for inter * prediction of any coded picture in the CLVS. * @inter_layer_prediction_enabled_flag: specifies whether inter-layer prediction * is enabled for the CLVS and ILRPs might be used for inter prediction of one * or more coded pictures in the CLVS. * @idr_rpl_present_flag: specifies whether RPL syntax elements could be present * in slice headers of slices with nal_unit_type equal to IDR_N_LP or IDR_W_RADL. * @rpl1_same_as_rpl0_flag: specifies whether the syntax element * sps_num_ref_pic_lists[1] and the syntax structure ref_pic_list_struct(1, rplsIdx) are present. * @num_ref_pic_lists: specifies the number of the ref_pic_list_struct(listIdx, * rplsIdx) syntax structures with listIdx equal to i included in the SPS. * @ref_pic_list_struct: the reference list of #GstH266RefPicListStruct. * @ref_wraparound_enabled_flag: specifies whether horizontal wrap-around motion * compensation is enabled for the CLVS. * @temporal_mvp_enabled_flag: specifies whether temporal motion vector * predictors are enabled for the CLVS. * @sbtmvp_enabled_flag: specifies whether subblock-based temporal motion vector * predictors are enabled and might be used in decoding of pictures with all * slices having sh_slice_type not equal to I in the CLVS. * @amvr_enabled_flag: specifies whether adaptive motion vector difference * resolution is enabled for the CVLS. * @bdof_enabled_flag: specifies whether the bi-directional optical flow inter * prediction is enabled for the CLVS. * @bdof_control_present_in_ph_flag: specifies whether ph_bdof_disabled_flag * could be present in PH syntax structures referring to the SPS. * @smvd_enabled_flag: specifies whether symmetric motion vector difference * is enabled for the CLVS. * @dmvr_enabled_flag: specifies whether decoder motion vector refinement based * inter bi-prediction is enabled for the CLVS. * @dmvr_control_present_in_ph_flag: specifies whether ph_dmvr_disabled_flag * could be present in PH syntax structures referring to the SPS. * @mmvd_enabled_flag: specifies whether merge mode with motion vector * difference is enabled for the CLVS. * @mmvd_fullpel_only_enabled_flag: specifies whether the merge mode with motion * vector difference using only integer sample precision is enabled for the CLVS. * @six_minus_max_num_merge_cand: specifies the maximum number of merging motion * vector prediction (MVP) candidates supported in the SPS. * @sbt_enabled_flag: specifies whether subblock transform for inter-predicted * CUs is enabled for the CLVS. * @affine_enabled_flag: specifies whether the affine model based motion * compensation is enabled for the CLVS. * @five_minus_max_num_subblock_merge_cand: specifies the maximum number of * subblock-based merging motion vector prediction candidates supported. * @sps_6param_affine_enabled_flag: specifies whether the 6-parameter affine * model based motion compensation is enabled for the CLVS. * @affine_amvr_enabled_flag: specifies whether adaptive motion vector * difference resolution is enabled for the CLVS. * @affine_prof_enabled_flag: specifies whether the affine motion compensation * refined with optical flow is enabled for the CLVS. * @prof_control_present_in_ph_flag: specifies whether ph_prof_disabled_flag * could be present in PH syntax structures. * bcw_enabled_flag: specifies whether bi-prediction with CU weights is enabled * for the CLVS. * @ciip_enabled_flag: specifies whether ciip_flag could be present in the * coding unit syntax for inter coding units. * @gpm_enabled_flag: specifies whether the geometric partition based motion * compensation is enabled for the CLVS. * @max_num_merge_cand_minus_max_num_gpm_cand: specifies the maximum number of * geometric partitioning merge mode candidates supported in the SPS. * @log2_parallel_merge_level_minus2: specifies the value of the variable * Log2ParMrgLevel. * @isp_enabled_flag: specifies whether intra prediction with subpartitions is * enabled for the CLVS. * @mrl_enabled_flag: specifies whether intra prediction with multiple reference * lines is enabled for the CLVS. * @mip_enabled_flag: specifies whether the matrix-based intra prediction is * enabled for the CLVS. * @cclm_enabled_flag: specifies whether the cross-component linear model intra * prediction from luma component to chroma component is enabled for the CLVS. * @chroma_horizontal_collocated_flag: specifies whether prediction processes * operate in a manner designed for chroma sample positions that are not * horizontally shifted relative to corresponding luma sample positions. * @chroma_vertical_collocated_flag: specifies whether prediction processes * operate in a manner designed for chroma sample positions that are not * vertically shifted relative to corresponding luma sample positions. * @palette_enabled_flag: specifies whether the palette prediction mode is * enabled for the CLVS. * @act_enabled_flag: specifies whether the adaptive colour transform is enabled * for the CLVS. * @min_qp_prime_ts: specifies whether minimum allowed quantization parameter * for transform skip mode. * @ibc_enabled_flag: specifies whether the IBC prediction mode is enabled for * the CLVS. * @six_minus_max_num_ibc_merge_cand: specifies the maximum number of IBC * merging block vector prediction (BVP) candidates. * @ladf_enabled_flag: specifies whether sps_num_ladf_intervals_minus2, * sps_ladf_lowest_interval_qp_offset, sps_ladf_qp_offset[i], and * sps_ladf_delta_threshold_minus1[i] are present in the SPS. * @num_ladf_intervals_minus2: specifies the number of * sps_ladf_delta_threshold_minus1[i] and sps_ladf_qp_offset[i] syntax * elements that are present in the SPS. * @ladf_lowest_interval_qp_offset: specifies the offset used to derive the * variable qP. * @ladf_qp_offset: specifies the offset array used to derive the variable qP. * @ladf_delta_threshold_minus1: is used to compute the values of * SpsLadfIntervalLowerBound[i]. * @explicit_scaling_list_enabled_flag: specifies whether the use of an explicit * scaling list is enabled for the CLVS. * @scaling_matrix_for_lfnst_disabled_flag: specifies whether scaling matrices * are disabled for blocks coded with LFNST for the CLVS. * @scaling_matrix_for_alternative_colour_space_disabled_flag: specifies whether * scaling matrices are disabled and not applied to blocks of a coding unit. * @scaling_matrix_designated_colour_space_flag: specifies whether the colour * space of the scaling matrices is the colour space that does not use a colour * space conversion for the decoded residuals. * @dep_quant_enabled_flag: specifies whether dependent quantization is enabled * for the CLVS. * @sign_data_hiding_enabled_flag: specifies whether sign bit hiding is enabled * for the CLVS. * @virtual_boundaries_enabled_flag: specifies whether disabling in-loop * filtering across virtual boundaries is enabled for the CLVS. * @virtual_boundaries_present_flag: specifies whether information of virtual * boundaries is signalled in the SPS. * @num_ver_virtual_boundaries: specifies the number of * sps_virtual_boundary_pos_x_minus1[i] syntax elements. * @virtual_boundary_pos_x_minus1: specifies the location of the i-th vertical * virtual boundary in units of luma samples divided by 8. * @num_hor_virtual_boundaries: specifies the number of * sps_virtual_boundary_pos_y_minus1[i] syntax elements. * @virtual_boundary_pos_y_minus1: specifies the location of the i-th horizontal * virtual boundary in units of luma samples divided by 8. * @timing_hrd_params_present_flag: specifies whether the SPS contains a * general_timing_hrd_parameters syntax structure and an * ols_timing_hrd_parameters syntax structure. * @sublayer_cpb_params_present_flag: specifies whether the * ols_timing_hrd_parameters syntax structure in the SPS includes HRD * parameters for sublayer representations. * @field_seq_flag: indicates whether the CLVS conveys pictures that * represent fields. * @vui_parameters_present_flag: specifies whether the syntax structure * vui_payload is present in the SPS RBSP syntax structure. * @vui_payload_size_minus1: specifies the number of RBSP bytes in the * vui_payload syntax structure. * @vui_params: VUI parameters of #GstH266VUIParams. * @extension_flag: specifies whether the syntax elements * sps_range_extension_flag and sps_extension_7bits are present. * @range_extension_flag: specifies whether the sps_range_extension syntax * structure is present. * @extension_7_flags: specifies whether no sps_extension_data_flag syntax * elements are present. * @range_params: range parameters of #GstH266SPSRangeExtensionParams. * @max_width: the calculated max width of the picture. * @max_height: the calculated max height of the picture. * @crop_rect_width: the cropped width of the picture. * @crop_rect_height: the cropped height of the picture. * @crop_rect_x: the x offset of the cropped window. * @crop_rect_y: the y offset of the cropped window. * @fps_num: the calculated FPS numerator. * @fps_den: the calculated FPS denominator. * @valid: whether the SPS is valid. * * Since: 1.26 */ struct _GstH266SPS { guint8 nuh_layer_id; guint8 sps_id; guint8 vps_id; GstH266VPS *vps; guint8 max_sublayers_minus1; guint8 chroma_format_idc; guint8 log2_ctu_size_minus5; guint ctu_size; guint8 ptl_dpb_hrd_params_present_flag; GstH266DPBParameters dpb; GstH266ProfileTierLevel profile_tier_level; GstH266GeneralHRDParameters general_hrd_params; GstH266OLSHRDParameters ols_hrd_params; guint8 gdr_enabled_flag; guint8 res_change_in_clvs_allowed_flag; guint8 ref_pic_resampling_enabled_flag; guint16 pic_width_max_in_luma_samples; guint16 pic_height_max_in_luma_samples; guint8 conformance_window_flag; guint16 conf_win_left_offset; guint16 conf_win_right_offset; guint16 conf_win_top_offset; guint16 conf_win_bottom_offset; guint8 subpic_info_present_flag; guint16 num_subpics_minus1; guint8 independent_subpics_flag; guint8 subpic_same_size_flag; guint16 subpic_ctu_top_left_x[GST_H266_MAX_SLICES_PER_AU]; guint16 subpic_ctu_top_left_y[GST_H266_MAX_SLICES_PER_AU]; guint16 subpic_width_minus1[GST_H266_MAX_SLICES_PER_AU]; guint16 subpic_height_minus1[GST_H266_MAX_SLICES_PER_AU]; guint8 subpic_treated_as_pic_flag[GST_H266_MAX_SLICES_PER_AU]; guint8 loop_filter_across_subpic_enabled_flag[GST_H266_MAX_SLICES_PER_AU]; guint32 subpic_id[GST_H266_MAX_SLICES_PER_AU]; guint8 subpic_id_len_minus1; guint8 subpic_id_mapping_explicitly_signalled_flag; guint8 subpic_id_mapping_present_flag; guint8 bitdepth_minus8; guint8 entropy_coding_sync_enabled_flag; guint8 entry_point_offsets_present_flag; guint8 log2_max_pic_order_cnt_lsb_minus4; guint8 poc_msb_cycle_flag; guint8 poc_msb_cycle_len_minus1; guint8 num_extra_ph_bytes; guint8 extra_ph_bit_present_flag[16]; guint8 num_extra_sh_bytes; guint8 extra_sh_bit_present_flag[16]; guint8 sublayer_dpb_params_flag; guint8 log2_min_luma_coding_block_size_minus2; guint8 partition_constraints_override_enabled_flag; guint8 log2_diff_min_qt_min_cb_intra_slice_luma; guint8 max_mtt_hierarchy_depth_intra_slice_luma; guint8 log2_diff_max_bt_min_qt_intra_slice_luma; guint8 log2_diff_max_tt_min_qt_intra_slice_luma; guint8 qtbtt_dual_tree_intra_flag; guint8 log2_diff_min_qt_min_cb_intra_slice_chroma; guint8 max_mtt_hierarchy_depth_intra_slice_chroma; guint8 log2_diff_max_bt_min_qt_intra_slice_chroma; guint8 log2_diff_max_tt_min_qt_intra_slice_chroma; guint8 log2_diff_min_qt_min_cb_inter_slice; guint8 max_mtt_hierarchy_depth_inter_slice; guint8 log2_diff_max_bt_min_qt_inter_slice; guint8 log2_diff_max_tt_min_qt_inter_slice; guint8 max_luma_transform_size_64_flag; guint8 transform_skip_enabled_flag; guint8 log2_transform_skip_max_size_minus2; guint8 bdpcm_enabled_flag; guint8 mts_enabled_flag; guint8 explicit_mts_intra_enabled_flag; guint8 explicit_mts_inter_enabled_flag; guint8 lfnst_enabled_flag; guint8 joint_cbcr_enabled_flag; guint8 same_qp_table_for_chroma_flag; gint8 qp_table_start_minus26[GST_H266_MAX_SAMPLE_ARRAYS]; guint8 num_points_in_qp_table_minus1[GST_H266_MAX_SAMPLE_ARRAYS]; guint8 delta_qp_in_val_minus1[GST_H266_MAX_SAMPLE_ARRAYS][GST_H266_MAX_POINTS_IN_QP_TABLE]; guint8 delta_qp_diff_val[GST_H266_MAX_SAMPLE_ARRAYS][GST_H266_MAX_POINTS_IN_QP_TABLE]; guint8 sao_enabled_flag; guint8 alf_enabled_flag; guint8 ccalf_enabled_flag; guint8 lmcs_enabled_flag; guint8 weighted_pred_flag; guint8 weighted_bipred_flag; guint8 long_term_ref_pics_flag; guint8 inter_layer_prediction_enabled_flag; guint8 idr_rpl_present_flag; guint8 rpl1_same_as_rpl0_flag; guint8 num_ref_pic_lists[2]; GstH266RefPicListStruct ref_pic_list_struct[2][GST_H266_MAX_REF_PIC_LISTS]; guint8 ref_wraparound_enabled_flag; guint8 temporal_mvp_enabled_flag; guint8 sbtmvp_enabled_flag; guint8 amvr_enabled_flag; guint8 bdof_enabled_flag; guint8 bdof_control_present_in_ph_flag; guint8 smvd_enabled_flag; guint8 dmvr_enabled_flag; guint8 dmvr_control_present_in_ph_flag; guint8 mmvd_enabled_flag; guint8 mmvd_fullpel_only_enabled_flag; guint8 six_minus_max_num_merge_cand; guint8 sbt_enabled_flag; guint8 affine_enabled_flag; guint8 five_minus_max_num_subblock_merge_cand; guint8 sps_6param_affine_enabled_flag; guint8 affine_amvr_enabled_flag; guint8 affine_prof_enabled_flag; guint8 prof_control_present_in_ph_flag; guint8 bcw_enabled_flag; guint8 ciip_enabled_flag; guint8 gpm_enabled_flag; guint8 max_num_merge_cand_minus_max_num_gpm_cand; guint8 log2_parallel_merge_level_minus2; guint8 isp_enabled_flag; guint8 mrl_enabled_flag; guint8 mip_enabled_flag; guint8 cclm_enabled_flag; guint8 chroma_horizontal_collocated_flag; guint8 chroma_vertical_collocated_flag; guint8 palette_enabled_flag; guint8 act_enabled_flag; guint8 min_qp_prime_ts; guint8 ibc_enabled_flag; guint8 six_minus_max_num_ibc_merge_cand; guint8 ladf_enabled_flag; guint8 num_ladf_intervals_minus2; gint8 ladf_lowest_interval_qp_offset; gint8 ladf_qp_offset[4]; guint16 ladf_delta_threshold_minus1[4]; guint8 explicit_scaling_list_enabled_flag; guint8 scaling_matrix_for_lfnst_disabled_flag; guint8 scaling_matrix_for_alternative_colour_space_disabled_flag; guint8 scaling_matrix_designated_colour_space_flag; guint8 dep_quant_enabled_flag; guint8 sign_data_hiding_enabled_flag; guint8 virtual_boundaries_enabled_flag; guint8 virtual_boundaries_present_flag; guint32 num_ver_virtual_boundaries; guint16 virtual_boundary_pos_x_minus1[3]; guint32 num_hor_virtual_boundaries; guint16 virtual_boundary_pos_y_minus1[3]; guint8 timing_hrd_params_present_flag; guint8 sublayer_cpb_params_present_flag; guint8 field_seq_flag; guint8 vui_parameters_present_flag; guint16 vui_payload_size_minus1; GstH266VUIParams vui_params; guint8 extension_flag; guint8 range_extension_flag; guint8 extension_7_flags[7]; GstH266SPSRangeExtensionParams range_params; /* calculated values */ gint max_width, max_height; gint crop_rect_width, crop_rect_height; gint crop_rect_x, crop_rect_y; gint fps_num, fps_den; gint chroma_qp_table[GST_H266_MAX_SAMPLE_ARRAYS][GST_H266_MAX_POINTS_IN_QP_TABLE]; gboolean valid; }; /** * GstH266PPS: * * Structure defining the H266 PPS. * * @pps_id: provides an identifier for the PPS for reference by other * syntax elements. * @sps_id: specifies the SPS referred to by this PPS. * @sps: the #GstH266SPS this PPS refers to. * @mixed_nalu_types_in_pic_flag: specifies whether each picture referring to * the PPS has more than one VCL NAL unit and the VCL NAL units do not have * the same value of nal_unit_type. * @pic_width_in_luma_samples: specifies the width of each decoded picture * referring to the PPS in units of luma samples. * @pic_height_in_luma_samples: specifies the height of each decoded picture * referring to the PPS in units of luma samples. * @conformance_window_flag: specifies whether the conformance cropping window * offset parameters follow next in the PPS. * @conf_win_left_offset: specify left offset of the cropping window that * is applied to pictures. * @conf_win_right_offset: specify right offset of the cropping window that * is applied to pictures. * @conf_win_top_offset: specify top offset of the cropping window that * is applied to pictures. * @conf_win_bottom_offset: specify bottom offset of the cropping window that * is applied to pictures. * @scaling_window_explicit_signalling_flag: specifies whether the scaling * window offset parameters are present in the PPS. * @scaling_win_left_offset: specify the left offsets that are applied to the * picture size for scaling ratio calculation. * @scaling_win_right_offset: specify the right offsets that are applied to the * picture size for scaling ratio calculation. * @scaling_win_top_offset: specify the top offsets that are applied to the * picture size for scaling ratio calculation. * @scaling_win_bottom_offset: specify the bottom offsets that are applied to * the picture size for scaling ratio calculation. * @output_flag_present_flag: specifies whether the ph_pic_output_flag syntax * element could be present in PH syntax structures referring to the PPS. * @no_pic_partition_flag: specifies whether no picture partitioning is applied * to each picture referring to the PPS. * @subpic_id_mapping_present_flag: specifies whether the subpicture ID mapping * is signalled in the PPS. * @num_subpics_minus1: shall be equal to sps_num_subpics_minus1. * @subpic_id_len_minus1: shall be equal to sps_subpic_id_len_minus1. * @subpic_id: specifies the subpicture ID of the i-th subpicture. * @log2_ctu_size_minus5: specifies the luma coding tree block size of each CTU. * @num_exp_tile_columns_minus1: specifies the number of explicitly provided * tile column widths. * @num_exp_tile_rows_minus1: specifies the number of explicitly provided tile * row heights. * @tile_column_width_minus1: specifies the width of the i-th tile column in * units of CTBs. * @tile_row_height_minus1: specifies the height of the i-th tile row in units * of CTBs. * @loop_filter_across_tiles_enabled_flag: specifies whether in-loop filtering * operations across tile boundaries are enabled for pictures. * @rect_slice_flag: specifies whether the raster-san slice mode is in use for * each picture referring to the PPS. * @single_slice_per_subpic_flag: specifies whether each subpicture consists of * one and only one rectangular slice. * @num_slices_in_pic_minus1: specifies the number of rectangular slices in * each picture. * @tile_idx_delta_present_flag: specifies whether all pictures are partitioned * into rectangular slice rows and rectangular slice columns in slice raster * order. * @slice_width_in_tiles_minus1: specifies the width of the i-th rectangular * slice in units of tile columns. * @slice_height_in_tiles_minus1: specifies the height of the i-th rectangular * slice in units of tile rows. * @num_exp_slices_in_tile: specifies the number of explicitly provided slice * heights for the slices in the containing the i-th slice. * @exp_slice_height_in_ctus_minus1: specifies the height of the j-th rectangular * slice in the tile containing the i-th slice. * @tile_idx_delta_val: specifies the difference between the tile index of the * tile containing the first CTU in the (i+1)-th rectangular slice and the tile * index of the tile containing the first CTU in the i-th rectangular slice. * @loop_filter_across_slices_enabled_flag: specifies whether in-loop filtering * operations across slice boundaries are enabled. * @cabac_init_present_flag: specifies whether sh_cabac_init_flag is present * in slice headers. * @num_ref_idx_default_active_minus1: specifies the inferred value of the * variable NumRefIdxActive[0] for P or B slices. * @rpl1_idx_present_flag: specifies whether rpl_sps_flag[1] and rpl_idx[1] are * present in the PH. * @weighted_pred_flag: specifies whether weighted prediction is applied to P * slices. * @weighted_bipred_flag: specifies whether explicit weighted prediction is * applied to B slices. * @ref_wraparound_enabled_flag: specifies whether the horizontal wrap-around * motion compensation is enabled. * @pic_width_minus_wraparound_offset: specifies the difference between the * picture width and the offset used for computing the horizontal wrap-around * position in units of MinCbSizeY luma samples. * @init_qp_minus26: specifies the initial value of SliceQp Y for each slice. * @cu_qp_delta_enabled_flag: specifies whether either or both of the * ph_cu_qp_delta_subdiv_intra_slice and ph_cu_qp_delta_subdiv_inter_slice * syntax elements are present in PH. * @chroma_tool_offsets_present_flag: specifies whether chroma tool offsets * related syntax elements are present in the PPS. * @cb_qp_offset: specify the offsets to the luma quantization parameter Qp'Y * used for deriving Qp'Cb. * @cr_qp_offset: specify the offsets to the luma quantization parameter Qp'Y * used for deriving Qp'Cr. * @joint_cbcr_qp_offset_present_flag: specifies whether * pps_joint_cbcr_qp_offset_value and pps_joint_cbcr_qp_offset_list[i] are * present in the PPS. * @joint_cbcr_qp_offset_value: specifies the offset to the luma quantization * parameter Qp'Y used for deriving Qp'CbCr. * @slice_chroma_qp_offsets_present_flag: specifies whether the sh_cb_qp_offset * and sh_cr_qp_offset syntax elements are present in slice headers. * @cu_chroma_qp_offset_list_enabled_flag: specifies whether the * ph_cu_chroma_qp_offset_subdiv_intra_slice and * ph_cu_chroma_qp_offset_subdiv_inter_slice syntax elements are present in PH. * @chroma_qp_offset_list_len_minus1: specifies whether number of * pps_cb_qp_offset_list[i], pps_cr_qp_offset_list[i], * and pps_joint_cbcr_qp_offset_list[i], syntax elements that are present. * @cb_qp_offset_list: specify offsets used in the derivation of Qp'Cb. * @cr_qp_offset_list: specify offsets used in the derivation of Qp'Cr. * @joint_cbcr_qp_offset_list: specify offsets used in the derivation of Qp'CbCr. * @deblocking_filter_control_present_flag: specifies whether presence of * deblocking filter control syntax elements in the PPS. * @deblocking_filter_override_enabled_flag: specifies whether the deblocking * behaviour could be overridden in the picture level or slice level. * @deblocking_filter_disabled_flag: specifies whether the deblocking filter is * disabled unless overridden for a picture or slice by information. * @dbf_info_in_ph_flag: specifies whether deblocking filter information is * present in the PH syntax structure and not present in slice headers. * @luma_beta_offset_div2: specify the default deblocking parameter offsets * for beta that are applied to the luma component. * @luma_tc_offset_div2: specify the default deblocking parameter offsets for * tC (divided by 2) that are applied to the luma component. * @cb_beta_offset_div2: specify the default deblocking parameter offsets for * beta and that are applied to the Cb component. * @cb_tc_offset_div2: specify the default deblocking parameter offsets for tC (divided by 2) that are applied to the Cb component. * @cr_beta_offset_div2: specify the default deblocking parameter offsets for * beta that are applied to the Cr component. * @cr_tc_offset_div2: specify the default deblocking parameter offsets for tC * (divided by 2) that are applied to the Cr component. * @rpl_info_in_ph_flag: specifies whether RPL information is present in the * PH syntax structure and not present in slice headers. * @sao_info_in_ph_flag: specifies whether SAO filter information could be * present in the PH syntax structure and not present in slice headers. * @alf_info_in_ph_flag: specifies whether ALF information could be present in * the PH syntax structure and not present in slice headers. * @wp_info_in_ph_flag: specifies whether weighted prediction information could * be present in the PH syntax structure and not present in slice headers. * @qp_delta_info_in_ph_flag: specifies whether QP delta information is present * in the PH syntax structure and not present in slice headers. * @picture_header_extension_present_flag: specifies whether PH extension syntax * elements are present in PH syntax structures. * @slice_header_extension_present_flag: specifies whether slice header * extension syntax elements are present in the slice headers. * @extension_flag: specifies whether pps_extension_data_flag syntax elements * are present. * @extension_data_flag: could have any value. * @width: the calculated width of the picture. * @height: the calculated height of the picture. * @crop_rect_width: the cropped width of the picture. * @crop_rect_height: the cropped height of the picture. * @crop_rect_x: the x offset of the cropped window. * @crop_rect_y: the y offset of the cropped window. * @pic_width_in_ctbs_y: PicWidthInCtbsY specify picture width count in CTBs. * @pic_height_in_ctbs_y: PicHeightInCtbsY specify picture height count in CTBs. * @pic_size_in_ctbs_y: picture size count in CTBs. * @num_tile_columns: total tile number in columns. * @num_tile_rows: total tile number in rows. * @num_tiles_in_pic: total tile number of the picture. * @tile_col_bd_val: TileColBdVal specifying the location of the i-th tile * column boundary in units of CTBs * @tile_row_bd_val: TileRowBdVal specifying the location of the j-th tile row * boundary in units of CTBs. * @slice_top_left_tile_idx: SliceTopLeftTileIdx specifying the tile index of * the tile containing the first CTU in the slice. * @slice_top_left_ctu_x: specifying the top left CTU index in X direction. * @slice_top_left_ctu_y: specifying the top left CTU index in Y direction. * @slice_height_in_ctus: slice height count in CTUs. * @num_slices_in_subpic: slice number in subpicture. * @valid: whether this PPS is valid. * * Since: 1.26 */ struct _GstH266PPS { guint8 pps_id; guint8 sps_id; GstH266SPS *sps; guint8 mixed_nalu_types_in_pic_flag; guint16 pic_width_in_luma_samples; guint16 pic_height_in_luma_samples; guint8 conformance_window_flag; guint16 conf_win_left_offset; guint16 conf_win_right_offset; guint16 conf_win_top_offset; guint16 conf_win_bottom_offset; guint8 scaling_window_explicit_signalling_flag; gint32 scaling_win_left_offset; gint32 scaling_win_right_offset; gint32 scaling_win_top_offset; gint32 scaling_win_bottom_offset; guint8 output_flag_present_flag; guint8 no_pic_partition_flag; guint8 subpic_id_mapping_present_flag; guint32 num_subpics_minus1; guint32 subpic_id_len_minus1; guint16 subpic_id[GST_H266_MAX_SLICES_PER_AU]; guint8 log2_ctu_size_minus5; guint8 num_exp_tile_columns_minus1; guint8 num_exp_tile_rows_minus1; guint16 tile_column_width_minus1[GST_H266_MAX_TILE_COLUMNS]; guint16 tile_row_height_minus1[GST_H266_MAX_TILE_ROWS]; guint8 loop_filter_across_tiles_enabled_flag; guint8 rect_slice_flag; guint8 single_slice_per_subpic_flag; guint16 num_slices_in_pic_minus1; guint8 tile_idx_delta_present_flag; guint16 slice_width_in_tiles_minus1[GST_H266_MAX_SLICES_PER_AU]; guint16 slice_height_in_tiles_minus1[GST_H266_MAX_SLICES_PER_AU]; guint16 num_exp_slices_in_tile[GST_H266_MAX_SLICES_PER_AU]; guint16 exp_slice_height_in_ctus_minus1[GST_H266_MAX_SLICES_PER_AU][GST_H266_MAX_TILE_ROWS]; gint16 tile_idx_delta_val[GST_H266_MAX_SLICES_PER_AU]; guint8 loop_filter_across_slices_enabled_flag; guint8 cabac_init_present_flag; guint8 num_ref_idx_default_active_minus1[2]; guint8 rpl1_idx_present_flag; guint8 weighted_pred_flag; guint8 weighted_bipred_flag; guint8 ref_wraparound_enabled_flag; guint16 pic_width_minus_wraparound_offset; gint8 init_qp_minus26; guint8 cu_qp_delta_enabled_flag; guint8 chroma_tool_offsets_present_flag; gint8 cb_qp_offset; gint8 cr_qp_offset; guint8 joint_cbcr_qp_offset_present_flag; gint8 joint_cbcr_qp_offset_value; guint8 slice_chroma_qp_offsets_present_flag; guint8 cu_chroma_qp_offset_list_enabled_flag; guint8 chroma_qp_offset_list_len_minus1; guint8 cb_qp_offset_list[6]; guint8 cr_qp_offset_list[6]; guint8 joint_cbcr_qp_offset_list[6]; guint8 deblocking_filter_control_present_flag; guint8 deblocking_filter_override_enabled_flag; guint8 deblocking_filter_disabled_flag; guint8 dbf_info_in_ph_flag; gint8 luma_beta_offset_div2; gint8 luma_tc_offset_div2; gint8 cb_beta_offset_div2; gint8 cb_tc_offset_div2; gint8 cr_beta_offset_div2; gint8 cr_tc_offset_div2; guint8 rpl_info_in_ph_flag; guint8 sao_info_in_ph_flag; guint8 alf_info_in_ph_flag; guint8 wp_info_in_ph_flag; guint8 qp_delta_info_in_ph_flag; guint8 picture_header_extension_present_flag; guint8 slice_header_extension_present_flag; guint8 extension_flag; guint8 extension_data_flag; /* extension_data */ /* calculated value */ gint width, height; gint crop_rect_width, crop_rect_height; gint crop_rect_x, crop_rect_y; guint32 pic_width_in_ctbs_y, pic_height_in_ctbs_y; guint32 pic_size_in_ctbs_y; guint32 num_tile_columns; guint32 num_tile_rows; guint32 num_tiles_in_pic; guint32 tile_col_bd_val[GST_H266_MAX_TILE_COLUMNS + 1]; guint32 tile_row_bd_val[GST_H266_MAX_TILE_ROWS + 1]; guint32 slice_top_left_tile_idx[GST_H266_MAX_SLICES_PER_AU]; guint32 slice_top_left_ctu_x[GST_H266_MAX_SLICES_PER_AU]; guint32 slice_top_left_ctu_y[GST_H266_MAX_SLICES_PER_AU]; guint32 slice_height_in_ctus[GST_H266_MAX_SLICES_PER_AU]; guint32 num_slices_in_subpic[GST_H266_MAX_SLICES_PER_AU]; gboolean valid; }; /** * GstH266ALF: * * Structure defining the H266 ALF parameters. * * @luma_filter_signal_flag: specifies whether a luma filter set is signalled. * @chroma_filter_signal_flag: specifies whether a chroma filter is signalled. * @cc_cb_filter_signal_flag: specifies whether cross-component filters for the * Cb colour component are signalled. * @cc_cr_filter_signal_flag: specifies whether cross-component filters for the * Cr colour component are signalled. * @luma_clip_flag: specifies whether linear adaptive loop filtering is applied * to the luma component. * @luma_num_filters_signalled_minus1: specifies the number of adpative loop * filter classes for which luma coefficients can be signalled. * @luma_coeff_delta_idx: specifies the indices of the signalled adaptive loop * filter luma coefficient deltas for the filter class. * @luma_coeff_abs: specifies the absolute value of the j-th coefficient of * the signalled luma filter. * @luma_coeff_sign: specifies the sign of the j-th luma coefficient of the * filter. * @luma_clip_idx: specifies the clipping index of the clipping value to use * before multiplying by the j-th coefficient of the signalled luma filter. * @chroma_clip_flag: specifies whether linear adaptive loop filtering is * applied to chroma components. * @chroma_num_alt_filters_minus1: specifies the number of alternative filters * for chroma components. * @chroma_coeff_abs: specifies the absolute value of the j-th chroma filter * coefficient for the alternative chroma filter with index altIdx. * @chroma_coeff_sign: specifies the sign of the j-th chroma filter coefficient * for the alternative chroma filter with index altIdx. * @chroma_clip_idx: specifies the clipping index of the clipping value to use * before multiplying by the j-th coefficient of the alternative chroma filter * with index altIdx. * @cc_cb_filters_signalled_minus1: specifies the number of cross-component * filters for the Cb colour component. * @cc_cb_mapped_coeff_abs: specifies the absolute value of the j-th mapped * coefficient of the signalled k-th cross-component filter for the Cb colour * component. * @cc_cb_coeff_sign: specifies the sign of the j-th coefficient of the * signalled k-th cross-component filter for the Cb colour component. * @cc_cr_filters_signalled_minus1: specifies the number of cross-component * filters for the Cr colour component. * @cc_cr_mapped_coeff_abs: specifies the absolute value of the j-th mapped * coefficient of the signalled k-th cross-component filter for the Cr colour * component. * @cc_cr_coeff_sign: specifies the sign of the j-th coefficient of the * signalled k-th cross-component filter for the Cr colour component. * * Since: 1.26 */ struct _GstH266ALF { guint8 luma_filter_signal_flag; guint8 chroma_filter_signal_flag; guint8 cc_cb_filter_signal_flag; guint8 cc_cr_filter_signal_flag; guint8 luma_clip_flag; guint8 luma_num_filters_signalled_minus1; guint8 luma_coeff_delta_idx[GST_H266_NUM_ALF_FILTERS]; guint8 luma_coeff_abs[GST_H266_NUM_ALF_FILTERS][12]; guint8 luma_coeff_sign[GST_H266_NUM_ALF_FILTERS][12]; guint8 luma_clip_idx[GST_H266_NUM_ALF_FILTERS][12]; guint8 chroma_clip_flag; guint8 chroma_num_alt_filters_minus1; guint8 chroma_coeff_abs[8][6]; guint8 chroma_coeff_sign[8][6]; guint8 chroma_clip_idx[8][6]; guint8 cc_cb_filters_signalled_minus1; guint8 cc_cb_mapped_coeff_abs[4][7]; guint8 cc_cb_coeff_sign[4][7]; guint8 cc_cr_filters_signalled_minus1; guint8 cc_cr_mapped_coeff_abs[4][7]; guint8 cc_cr_coeff_sign[4][7]; }; /** * GstH266LMCS: * * Structure defining the H266 LMCS parameters. * * @min_bin_idx: minimum bin index used in the luma mapping with chroma scaling * construction process. * @delta_max_bin_idx: specifies the delta value between 15 and the maximum bin * index LmcsMaxBinIdx used in the luma mapping with chroma scaling construction * process. * @delta_cw_prec_minus1: specifies the number of bits used for the * representation of the syntax lmcs_delta_abs_cw[i]. * @delta_abs_cw: specifies the absolute delta codeword value for the ith bin. * @delta_sign_cw_flag: specifies the sign of the variable lmcsDeltaCW[i]. * @delta_abs_crs: specifies the absolute codeword value of the variable * lmcsDeltaCrs. * @delta_sign_crs_flag: specifies the sign of the variable lmcsDeltaCrs. * * Since: 1.26 */ struct _GstH266LMCS { guint8 min_bin_idx; guint8 delta_max_bin_idx; guint8 delta_cw_prec_minus1; guint8 delta_abs_cw[16]; guint8 delta_sign_cw_flag[16]; guint8 delta_abs_crs; guint8 delta_sign_crs_flag; }; /** * GstH266ScalingList: * * Structure defining the H266 scaling list parameters. * * @copy_mode_flag: specifies whether the values of the scaling list are the * same as the values of a reference scaling list. * @pred_mode_flag: specifies whether the values of the scaling list can be * predicted from a reference scaling list. * @pred_id_delta: specifies the reference scaling list used to derive the * predicted scaling matrix scalingMatrixPred. * @dc_coef: used to derive the value of the variable ScalingMatrixDcRec. * @delta_coef: specifies the difference between the current matrix coefficient * ScalingList. * @scaling_list_DC: the scaling list DC coef. * @scaling_list: the calculated scaling list coefs. * * Since: 1.26 */ struct _GstH266ScalingList { guint8 copy_mode_flag[28]; guint8 pred_mode_flag[28]; guint8 pred_id_delta[28]; gint8 dc_coef[14]; gint8 delta_coef[28][64]; guint8 scaling_list_DC[14]; guint8 scaling_list[28][64]; }; /** * GstH266APS: * * Structure defining the H266 Adaptation Parameter Set. * * @params_type: specifies the type of APS parameters carried in the APS as * specified in Table 6. * @aps_id: provides an identifier for the APS for reference by other syntax * elements. * @chroma_present_flag: specifies whether the APS NAL unit could include * chroma related syntax elements. * @alf: ALF parameters of #GstH266ALF when params_type is GST_H266_ALF_APS. * @lmcs: LMCS parameters of #GstH266LMCS when params_type is GST_H266_LMCS_APS. * @sl: scaling list parameters of #GstH266ScalingList when params_type is * GST_H266_SCALING_APS. * @extension_flag: specifies whether aps_extension_data_flag syntax elements * are present. * @extension_data_flag: could have any value and do not affect the decoding * process now. * @valid: whether this APS is valid. * * Since: 1.26 */ struct _GstH266APS { GstH266APSType params_type; guint8 aps_id; guint8 chroma_present_flag; union { GstH266ALF alf; GstH266LMCS lmcs; GstH266ScalingList sl; }; guint8 extension_flag; guint8 extension_data_flag; gboolean valid; }; /** * GstH266PredWeightTable: * * Structure defining the H266 weight table parameters. * * @luma_log2_weight_denom: the base 2 logarithm of the denominator for all * luma weighting factors. * @delta_chroma_log2_weight_denom: the difference of the base 2 logarithm of * the denominator for all chroma weighting factors. * @num_l0_weights: specifies the number of weights signalled for entries in * RPL 0 when pps_wp_info_in_ph_flag is equal to 1. * @luma_weight_l0_flag: specifies whether weighting factors for the luma * component of list 0 prediction using RefPicList[0][i] are present. * @chroma_weight_l0_flag: specifies whether weighting factors for the chroma * prediction values of list 0 prediction using RefPicList[0][i] are present. * @delta_luma_weight_l0: the difference of the weighting factor applied to the * luma prediction value for list 0 prediction using RefPicList[0][i]. * @luma_offset_l0: the additive offset applied to the luma prediction value * for list 0 prediction using RefPicList[0][i]. * @delta_chroma_weight_l0: the difference of the weighting factor applied to * the chroma prediction values for list 0 prediction. * @delta_chroma_offset_l0: the difference of the additive offset applied to * the chroma prediction values for list 0 prediction. * @num_l1_weights: specifies the number of weights signalled for entries in * RPL 1. * @luma_weight_l1_flag: specifies whether weighting factors for the luma * component of list 1 prediction using RefPicList[1][i] are present. * @chroma_weight_l1_flag: specifies whether weighting factors for the chroma * prediction values of list 1 prediction using RefPicList[1][i] are present. * @delta_luma_weight_l1: the difference of the weighting factor applied to the * luma prediction value for list 1 prediction using RefPicList[1][i]. * @luma_offset_l1: the additive offset applied to the luma prediction value * for list 1 prediction using RefPicList[1][i]. * @delta_chroma_weight_l1: the difference of the weighting factor applied to * the chroma prediction values for list 1 prediction. * @delta_chroma_offset_l1: the difference of the additive offset applied to * the chroma prediction values for list 1 prediction. * * Since: 1.26 */ struct _GstH266PredWeightTable { guint8 luma_log2_weight_denom; gint8 delta_chroma_log2_weight_denom; guint8 num_l0_weights; guint8 luma_weight_l0_flag[15]; guint8 chroma_weight_l0_flag[15]; gint8 delta_luma_weight_l0[15]; gint8 luma_offset_l0[15]; gint8 delta_chroma_weight_l0[15][2]; gint16 delta_chroma_offset_l0[15][2]; guint8 num_l1_weights; guint8 luma_weight_l1_flag[15]; guint8 chroma_weight_l1_flag[15]; gint8 delta_luma_weight_l1[15]; gint8 luma_offset_l1[15]; gint8 delta_chroma_weight_l1[15][2]; gint16 delta_chroma_offset_l1[15][2]; }; /** * GstH266PicHdr: * * Structure defining the H266 picture header. * * @gdr_or_irap_pic_flag: specifies whethers the current picture is a GDR or * IRAP picture. * @non_ref_pic_flag: specifies whether the current picture is never used as * a reference picture. * @gdr_pic_flag: specifies whether the current picture is a GDR picture. * @inter_slice_allowed_flag: specifies whether all coded slices of the picture * have sh_slice_type equal to 2. * @intra_slice_allowed_flag: specifies whether all coded slices of the picture * have sh_slice_type equal to 0 or 1. * @pps_id: specifies the value of pps_pic_parameter_set_id for the PPS in use. * @pic_order_cnt_lsb: specifies the picture order count modulo * MaxPicOrderCntLsb for the current picture. * @recovery_poc_cnt: specifies the recovery point of decoded pictures in * output order. * @extra_bit[16]: could have any value. * @poc_msb_cycle_present_flag: specifies that the syntax element * ph_poc_msb_cycle_val is present in the PH. * @poc_msb_cycle_val: specifies the value of the POC MSB cycle of the current * picture. * @alf_enabled_flag: specifies whether the adaptive loop filter is enabled for * the current picture. * @num_alf_aps_ids_luma: specifies the number of ALF APSs that the slices in * the current picture refers to. * @alf_aps_id_luma: specifies the aps_adaptation_parameter_set_id of the i-th * ALF APS. * @alf_cb_enabled_flag: specifies whether the adaptive loop filter is enabled * for the Cb colour component of the current picture. * @alf_cr_enabled_flag: specifies whether the adaptive loop filter is enabled * for the Cr colour component of the current picture. * @alf_aps_id_chroma;: specifies the aps_adaptation_parameter_set_id of the * ALF APS. * @alf_cc_cb_enabled_flag: specifies whether the cross-component adaptive loop * filter for the Cb colour component is enabled for the current picture * @alf_cc_cb_aps_id: specifies the aps_adaptation_parameter_set_id of the ALF APS * that the Cb colour component of the slices in the current picture refers to. * @alf_cc_cr_enabled_flag: specifies that the cross-compoent adaptive loop * filter for the Cr colour component is enabled for the current picture. * @alf_cc_cr_aps_id: specifies the aps_adaptation_parameter_set_id of the ALF APS * that the Cr colour component of the slices in the current picture refers to. * @lmcs_enabled_flag: specifies whether LMCS is enabled for the current picture. * @lmcs_aps_id: specifies the aps_adaptation_parameter_set_id of the LMCS APS. * @chroma_residual_scale_flag: specifies whether chroma residual scaling is * enabled and could be used for the current picture. * @explicit_scaling_list_enabled_flag: specifies that the explicit scaling list * is enabled for the current picture. * @scaling_list_aps_id: specifies the aps_adaptation_parameter_set_id of the * scaling list APS. * @virtual_boundaries_present_flag: specifies whether information of virtual * boundaries is signalled in the PH syntax structure. * @num_ver_virtual_boundaries: specifies the number of * ph_virtual_boundary_pos_x_minus1[i] syntax elements. * @virtual_boundary_pos_x_minus1: specifies the location of the i-th vertical * virtual boundary in units of luma samples divided by 8. * @num_hor_virtual_boundaries: specifies the number of * ph_virtual_boundary_pos_y_minus1[i]. * @virtual_boundary_pos_y_minus1: specifies the location of the i-th horizontal * virtual boundary in units of luma samples divided by 8. * @pic_output_flag: affects the decoded picture output and removal processes * as specified in Annex C. * @ref_pic_lists: reference lists of #GstH266RefPicLists. * @partition_constraints_override_flag: specifies that partition constraint * parameters are present. * @log2_diff_min_qt_min_cb_intra_slice_luma: specifies the difference between * the base 2 logarithm of the minimum size in luma samples of a luma leaf * block resulting from quadtree splitting of a CTU and the base 2 logarithm * of the minimum coding block size in luma samples for luma CUs. * @max_mtt_hierarchy_depth_intra_slice_luma: specifies the maximum hierarchy * depth for coding units resulting from multi-type tree splitting of a * quadtree leaf. * @log2_diff_max_bt_min_qt_intra_slice_luma: specifies the difference between * the base 2 logarithm of the maximum size in luma samples of a luma coding * block that can be split using a binary split and the base 2 logarithm of * the minimum size in luma samples of a luma leaf block resulting from * quadtree splitting of a CTU. * @log2_diff_max_tt_min_qt_intra_slice_luma: specifies the difference between * the base 2 logarithm of the maximum size in luma samples of a luma coding * block that can be split using a ternary split and the base 2 logarithm of * the minimum size in luma samples of a luma leaf block resulting from * quadtree splitting of a CTU. * @log2_diff_min_qt_min_cb_intra_slice_chroma: specifies the difference between * the base 2 logarithm of the minimum size in luma samples of a chroma leaf * block resulting from quadtree splitting of a chroma CTU with treeType equal * to DUAL_TREE_CHROMA and the base 2 logarithm of the minimum coding block * size in luma samples for chroma CUs with treeType equal to DUAL_TREE_CHROMA. * @max_mtt_hierarchy_depth_intra_slice_chroma: specifies the maximum hierarchy * depth for chroma coding units resulting from multi-type tree splitting of a * chroma quadtree leaf with treeType equal to DUAL_TREE_CHROMA. * @log2_diff_max_bt_min_qt_intra_slice_chroma: specifies the difference between * the base 2 logarithm of the maximum size in luma samples of a chroma coding * block that can be split using a binary split and the base 2 logarithm of the * minimum size in luma samples of a chroma leaf block resulting from quadtree * splitting of a chroma CTU with treeType equal to DUAL_TREE_CHROMA. * @log2_diff_max_tt_min_qt_intra_slice_chroma: specifies the difference between * the base 2 logarithm of the maximum size in luma samples of a chroma coding * block that can be split using a ternary split and the base 2 logarithm of * the minimum size in luma samples of a chroma leaf block resulting from * quadtree splitting of a chroma CTU with treeType equal to DUAL_TREE_CHROMA. * @cu_qp_delta_subdiv_intra_slice: specifies the maximum cbSubdiv value of * coding units in intra slice that convey cu_qp_delta_abs and * cu_qp_delta_sign_flag. * @cu_chroma_qp_offset_subdiv_intra_slice: specifies the maximum cbSubdiv value * of coding units in intra slice that convey cu_chroma_qp_offset_flag. * @log2_diff_min_qt_min_cb_inter_slice: specifies the difference between the * base 2 logarithm of the minimum size in luma samples of a luma leaf block * resulting from quadtree splitting of a CTU and the base 2 logarithm of the * minimum luma coding block size in luma samples for luma CUs. * @max_mtt_hierarchy_depth_inter_slice: specifies the maximum hierarchy depth * for coding units resulting from multi-type tree splitting of a quadtree leaf. * @log2_diff_max_bt_min_qt_inter_slice: specifies the difference between the * base 2 logarithm of the maximum size in luma samples of a luma coding block * that can be split using a binary split and the base 2 logarithm of the * minimum size in luma samples of a luma leaf block resulting from quadtree * splitting of a CTU. * @log2_diff_max_tt_min_qt_inter_slice: specifies the difference between the * base 2 logarithm of the maximum size in luma samples of a luma coding block * that can be split using a ternary split and the base 2 logarithm of the * minimum size in luma samples of a luma leaf block resulting from quadtree * splitting of a CTU. * @cu_qp_delta_subdiv_inter_slice: specifies the maximum cbSubdiv value of * coding units that in inter slice convey cu_qp_delta_abs and * cu_qp_delta_sign_flag. * @cu_chroma_qp_offset_subdiv_inter_slice: specifies the maximum cbSubdiv value * of coding units in inter slice that convey cu_chroma_qp_offset_flag. * @temporal_mvp_enabled_flag: specifies whether temporal motion vector * predictor is enabled for the current picture. * @collocated_from_l0_flag: specifies whether the collocated picture used for * temporal motion vector prediction is derived from RPL 0. * @collocated_ref_idx: specifies the reference index of the collocated picture * used for temporal motion vector prediction. * @mmvd_fullpel_only_flag: specifies whether the merge mode with motion vector * difference uses only integer sample precision for the current picture. * @mvd_l1_zero_flag: specifies whether the mvd_coding syntax structure is parsed. * @bdof_disabled_flag: specifies that the bi-directional optical flow inter * prediction based inter bi-prediction is disabled for the current picture. * @dmvr_disabled_flag: specifies whether the decoder motion vector refinement * based inter bi-prediction is disabled for the current picture. * @prof_disabled_flag: specifies whether prediction refinement with optical * flow is disabled for the current picture. * @pred_weight_table: prediction weight table of #GstH266PredWeightTable. * @qp_delta: specifies the initial value of QpY to be used for the coding * blocks in the picture. * @joint_cbcr_sign_flag: specifies whether the collocated residual samples of * both chroma components have inverted signs. * @sao_luma_enabled_flag: specifies whether SAO is enabled for the luma * component of the current picture. * @sao_chroma_enabled_flag: specifies whether SAO is enabled for the chroma * component of the current picture. * @deblocking_params_present_flag: specifies whether the deblocking parameters * could be present in the PH syntax structure. * @deblocking_filter_disabled_flag: specifies whether the deblocking filter is * disabled for the current picture. * @luma_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the luma component for the slices in the current picture. * @luma_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the luma component for the slices in the current picture. * @cb_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the Cb component for the slices in the current picture. * @cb_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the Cb component for the slices in the current picture. * @cr_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the Cr component for the slices in the current picture. * @cr_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the Cr component for the slices in the current picture. * @extension_length: specifies the length of the PH extension data in bytes. * @extension_data_byte: could have any value. * @valid: whether this picture header is valid. * * Since: 1.26 */ struct _GstH266PicHdr { guint8 gdr_or_irap_pic_flag; guint8 non_ref_pic_flag; guint8 gdr_pic_flag; guint8 inter_slice_allowed_flag; guint8 intra_slice_allowed_flag; guint8 pps_id; GstH266PPS *pps; guint16 pic_order_cnt_lsb; guint8 recovery_poc_cnt; guint8 extra_bit[16]; guint8 poc_msb_cycle_present_flag; guint8 poc_msb_cycle_val; guint8 alf_enabled_flag; guint8 num_alf_aps_ids_luma; guint8 alf_aps_id_luma[8]; guint8 alf_cb_enabled_flag; guint8 alf_cr_enabled_flag; guint8 alf_aps_id_chroma; guint8 alf_cc_cb_enabled_flag; guint8 alf_cc_cb_aps_id; guint8 alf_cc_cr_enabled_flag; guint8 alf_cc_cr_aps_id; guint8 lmcs_enabled_flag; guint8 lmcs_aps_id; guint8 chroma_residual_scale_flag; guint8 explicit_scaling_list_enabled_flag; guint8 scaling_list_aps_id; guint8 virtual_boundaries_present_flag; guint8 num_ver_virtual_boundaries; guint16 virtual_boundary_pos_x_minus1[3]; guint8 num_hor_virtual_boundaries; guint16 virtual_boundary_pos_y_minus1[3]; guint8 pic_output_flag; GstH266RefPicLists ref_pic_lists; guint8 partition_constraints_override_flag; guint8 log2_diff_min_qt_min_cb_intra_slice_luma; guint8 max_mtt_hierarchy_depth_intra_slice_luma; guint8 log2_diff_max_bt_min_qt_intra_slice_luma; guint8 log2_diff_max_tt_min_qt_intra_slice_luma; guint8 log2_diff_min_qt_min_cb_intra_slice_chroma; guint8 max_mtt_hierarchy_depth_intra_slice_chroma; guint8 log2_diff_max_bt_min_qt_intra_slice_chroma; guint8 log2_diff_max_tt_min_qt_intra_slice_chroma; guint8 cu_qp_delta_subdiv_intra_slice; guint8 cu_chroma_qp_offset_subdiv_intra_slice; guint8 log2_diff_min_qt_min_cb_inter_slice; guint8 max_mtt_hierarchy_depth_inter_slice; guint8 log2_diff_max_bt_min_qt_inter_slice; guint8 log2_diff_max_tt_min_qt_inter_slice; guint8 cu_qp_delta_subdiv_inter_slice; guint8 cu_chroma_qp_offset_subdiv_inter_slice; guint8 temporal_mvp_enabled_flag; guint8 collocated_from_l0_flag; guint8 collocated_ref_idx; guint8 mmvd_fullpel_only_flag; guint8 mvd_l1_zero_flag; guint8 bdof_disabled_flag; guint8 dmvr_disabled_flag; guint8 prof_disabled_flag; GstH266PredWeightTable pred_weight_table; gint8 qp_delta; guint8 joint_cbcr_sign_flag; guint8 sao_luma_enabled_flag; guint8 sao_chroma_enabled_flag; guint8 deblocking_params_present_flag; guint8 deblocking_filter_disabled_flag; gint8 luma_beta_offset_div2; gint8 luma_tc_offset_div2; gint8 cb_beta_offset_div2; gint8 cb_tc_offset_div2; gint8 cr_beta_offset_div2; gint8 cr_tc_offset_div2; guint8 extension_length; guint8 extension_data_byte[256]; gboolean valid; }; /** * GstH266SliceHdr: * * Structure defining the H266 slice header. * * @gdr_or_irap_pic_flag: specifies that the PH syntax structure is present in * the slice header. * @picture_header: the picture header of #GstH266PicHdr. * @subpic_id: specifies the subpicture ID of the subpicture. * @slice_address: specifies the slice address of the slice. * @extra_bit: could have any value. * @num_tiles_in_slice_minus1: specifies the number of tiles in the slice. * @slice_type: specifies the coding type of the slice. * @no_output_of_prior_pics_flag: affects the output of previously-decoded * pictures in the DPB. * @alf_enabled_flag: specifies whether ALF is enabled for the Y, Cb, or Cr * colour component of the current slice. * @num_alf_aps_ids_luma: specifies the number of ALF APSs. * @alf_aps_id_luma: specifies the aps_adaptation_parameter_set_id of the i-th * ALF APS that the luma component of the slice refers to. * @alf_cb_enabled_flag: specifies whether ALF is enabled for the Cb colour * component of the current slice. * @alf_cr_enabled_flag: specifies whether ALF is enabled for the Cr colour * component of the current slice. * @alf_aps_id_chroma: specifies the aps_adaptation_parameter_set_id of the ALF * APS that the chroma component of the slice refers to. * @alf_cc_cb_enabled_flag: specifies whether CCALF is enabled for the Cb * colour component. * @alf_cc_cb_aps_id: specifies the aps_adaptation_parameter_set_id that the Cb * colour component of the slice refers to. * @alf_cc_cr_enabled_flag: specifies whether CCALF is enabled for the Cr * colour component of the current slice. * @alf_cc_cr_aps_id: specifies the aps_adaptation_parameter_set_id that the Cr * colour component of the slice refers to. * @lmcs_used_flag: specifies that luma mapping is used for the current slice * and chroma scaling could be used for the current slice. * @explicit_scaling_list_used_flag: specifies that the explicit scaling list * is used in the scaling process for transform coefficients. * @ref_pic_lists: reference pictures lists of #GstH266RefPicLists. * @num_ref_idx_active_override_flag: specifies whether the syntax element * sh_num_ref_idx_active_minus1[0] is present for P and B slices. * @num_ref_idx_active_minus1: is used for the derivation of the variable * NumRefIdxActive[i]. * @num_ref_idx_active: the calculated NumRefIdxActive value. * @cabac_init_flag: specifies the method for determining the initialization * table used in the initialization process for context variables. * @collocated_from_l0_flag: specifies whether the collocated picture used for * temporal motion vector prediction is derived from RPL 0. * @collocated_ref_idx: specifies the reference index of the collocated picture * used for temporal motion vector prediction. * @pred_weight_table: prediction weight table of #GstH266PredWeightTable. * @qp_base: the qp base of the current slice. * @qp_delta: specifies the initial value of QpY to be used for the coding * blocks in the slice. * @cb_qp_offset: specifies a difference to be added to the value of * pps_cb_qp_offset when determining the value of the Qp'Cb quantization. * @cr_qp_offset: specifies a difference to be added to the value of * pps_cr_qp_offset when determining the value of the Qp' Cr quantization. * @joint_cbcr_qp_offset: specifies a difference to be added to the value of * pps_joint_cbcr_qp_offset_value when determining the value of the Qp'CbCr. * @cu_chroma_qp_offset_enabled_flag: specifies whether the * cu_chroma_qp_offset_flag could be present in the transform unit and palette * coding syntax of the current slice. * @sao_luma_used_flag: specifies whether SAO is used for the luma component * in the current slice. * @sao_chroma_used_flag: specifies whether SAO is used for the chroma component * in the current slice. * @deblocking_params_present_flag: specifies whether the deblocking parameters * could be present in the slice header. * @deblocking_filter_disabled_flag: specifies whether the deblocking filter is * disabled for the current slice. * @luma_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the luma component for the current slice. * @luma_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the luma component for the current slice. * @cb_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the Cb component for the current slice. * @cb_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the Cb component for the current slice. * @cr_beta_offset_div2: specify the deblocking parameter offsets for beta that * are applied to the Cr component for the current slice. * @cr_tc_offset_div2: specify the deblocking parameter offsets for tC that * are applied to the Cr component for the current slice. * @dep_quant_used_flag: specifies whether dependent quantization is used. * @sign_data_hiding_used_flag: specifies whether sign bit hiding is not used * for the current slice. * @ts_residual_coding_disabled_flag: specifies whether the residual_coding * syntax structure is used to parse the residual samples of a transform skip * block for the current slice. * @ts_residual_coding_rice_idx_minus1: specifies whether Rice parameter used * for the residual_ts_coding syntax structure in the current slice. * @reverse_last_sig_coeff_flag: specifies whether the coordinates of the last * significant coefficient are coded relative to ( 0, 0 ) for each transform * block of the current slice. * @slice_header_extension_length: specifies the length of the slice header * extension data in bytes. * @slice_header_extension_data_byte: could have any value. * @num_entry_points: NumEntryPoints specifies the number of entry points in * the current slice. * @entry_offset_len_minus1: specifies the length, in bits, of the * sh_entry_point_offset_minus1[i] syntax elements. * @entry_point_offset_minus1: specifies the i-th entry point offset in bytes. * @header_size: size of the slice_header in bits. * @n_emulation_prevention_bytes: number of emulation prevention bytes (EPB) in * this slice_header. * * Since: 1.26 */ struct _GstH266SliceHdr { guint8 picture_header_in_slice_header_flag; GstH266PicHdr picture_header; guint16 subpic_id; guint16 slice_address; guint8 extra_bit[16]; guint8 num_tiles_in_slice_minus1; guint8 slice_type; guint8 no_output_of_prior_pics_flag; guint8 alf_enabled_flag; guint8 num_alf_aps_ids_luma; guint8 alf_aps_id_luma[8]; guint8 alf_cb_enabled_flag; guint8 alf_cr_enabled_flag; guint8 alf_aps_id_chroma; guint8 alf_cc_cb_enabled_flag; guint8 alf_cc_cb_aps_id; guint8 alf_cc_cr_enabled_flag; guint8 alf_cc_cr_aps_id; guint8 lmcs_used_flag; guint8 explicit_scaling_list_used_flag; GstH266RefPicLists ref_pic_lists; guint8 num_ref_idx_active_override_flag; guint8 num_ref_idx_active_minus1[2]; guint8 num_ref_idx_active[2]; guint8 cabac_init_flag; guint8 collocated_from_l0_flag; guint8 collocated_ref_idx; GstH266PredWeightTable pred_weight_table; gint8 slice_qp_y; gint8 qp_delta; gint8 cb_qp_offset; gint8 cr_qp_offset; gint8 joint_cbcr_qp_offset; guint8 cu_chroma_qp_offset_enabled_flag; guint8 sao_luma_used_flag; guint8 sao_chroma_used_flag; guint8 deblocking_params_present_flag; guint8 deblocking_filter_disabled_flag; gint8 luma_beta_offset_div2; gint8 luma_tc_offset_div2; gint8 cb_beta_offset_div2; gint8 cb_tc_offset_div2; gint8 cr_beta_offset_div2; gint8 cr_tc_offset_div2; guint8 dep_quant_used_flag; guint8 sign_data_hiding_used_flag; guint8 ts_residual_coding_disabled_flag; guint8 ts_residual_coding_rice_idx_minus1; guint8 reverse_last_sig_coeff_flag; guint16 slice_header_extension_length; guint8 slice_header_extension_data_byte[256]; guint16 num_entry_points; guint16 entry_point_start_ctu[GST_H266_MAX_ENTRY_POINTS]; guint8 entry_offset_len_minus1; guint32 entry_point_offset_minus1[GST_H266_MAX_ENTRY_POINTS]; /* Size of the slice_header() in bits */ guint header_size; /* Number of emulation prevention bytes (EPB) in this slice_header() */ guint n_emulation_prevention_bytes; }; /** * GstH266AUD: * * Structure defining the H266 AU delimiter. * * @irap_or_gdr_flag: specifies whether the AU containing the AU delimiter is * an IRAP or GDR AU. * @pic_type: indicates sh_slice_type values that could be present in the AU. * * Since: 1.26 */ struct _GstH266AUD { guint8 irap_or_gdr_flag; guint8 pic_type; }; /** * GstH266OPI: * * Structure defining the H266 operating point information. * * @ols_info_present_flag: specifies whether opi_ols_idx is present in the OPI. * @htid_info_present_flag: specifies whether opi_htid_plus1 is present. * @ols_idx: specifies that the current CVS and the next CVSs in decoding order * up to and not including the next CVS for which opi_ols_idx is provided in * an OPI NAL unit do not contain any other layers than those included in the * OLS with OLS index equal to opi_ols_idx. * @htid_plus1: specifies that all the pictures in the current CVS and the next * CVSs in decoding order up to and not including the next CVS for which * opi_htid_plus1 is provided in an OPI NAL unit are IRAP pictures or GDR * pictures with ph_recovery_poc_cnt equal to 0. * @extension_flag: specifies whether opi_extension_data_flag syntax elements * are present. * @extension_data_flag: could have any value. * * Since: 1.26 */ struct _GstH266OPI { guint8 ols_info_present_flag; guint8 htid_info_present_flag; guint ols_idx; guint8 htid_plus1; guint8 extension_flag; guint8 extension_data_flag; /* extension_data */ }; /** * GstH266DCI: * * Structure defining the H266 decoding capability information. * * @num_ptls_minus1: specifies the number of profile_tier_level syntax * structures in the DCI NAL unit. * @extension_flag: specifies whether dci_extension_data_flag syntax elements * are present. * @extension_data_flag: could have any value. * * Since: 1.26 */ struct _GstH266DCI { guint8 num_ptls_minus1; GstH266ProfileTierLevel profile_tier_level[15]; guint8 extension_flag; guint8 extension_data_flag; /* extension_data */ }; /** * GstH266BufferingPeriod: * * Structure defining the H266 buffering period. * * @nal_hrd_params_present_flag: specifies whether a list of syntax element * pairs bp_nal_initial_cpb_removal_delay and bp_nal_initial_cpb_removal_offset * are present in the BP SEI message. * @vcl_hrd_params_present_flag: specifies whether a list of syntax element * pairs bp_vcl_initial_cpb_removal_delay and bp_vcl_initial_cpb_removal_offset * are present in the BP SEI message. * @cpb_initial_removal_delay_length_minus1: specifies the length, in bits, of * the initial cpb removal syntax elements. * @cpb_removal_delay_length_minus1: specifies the length, in bits, of the * cpb removal syntax elements. * @dpb_output_delay_length_minus1: specifies the length, in bits, of the * syntax dpb output syntax elements. * @du_hrd_params_present_flag: specifies whether DU level HRD parameters are * present and the HRD can be operated at the AU level or DU level. * @du_cpb_removal_delay_increment_length_minus1: specifies the length, in bits, * of the du cpb removal syntax elements. * @dpb_output_delay_du_length_minus1: specifies the length, in bits, of the * dpb output syntax element. * @du_cpb_params_in_pic_timing_sei_flag: specifies whether DU level CPB removal * delay parameters are present in PT SEI messages. * @du_dpb_params_in_pic_timing_sei_flag: specifies whether DU level DPB output * delay parameters are present in PT SEI messages. * @concatenation_flag: indicates whether the nominal CPB removal time of the * current AU is determined relative to the nominal CPB removal time of the * previous AU. * @additional_concatenation_info_present_flag: specifies whether the syntax * element bp_max_initial_removal_delay_for_concatenation is present in the BP * SEI message and the syntax element pt_delay_for_concatenation_ensured_flag * is present in the PT SEI messages. * @max_initial_removal_delay_for_concatenation: identify whether the nominal * removal time from the CPB of the first AU of a following BP computed with * bp_cpb_removal_delay_delta_minus1 applies. * @cpb_removal_delay_delta_minus1: specifies a CPB removal delay increment * value relative to the nominal CPB removal time of the AU prevNonDiscardableAu. * @max_sublayers_minus1: specifies whether maximum number of temporal sublayers * for which the initial CPB removal delay and the initial CPB removal offset * are indicated in the BP SEI message. * @cpb_removal_delay_deltas_present_flag: specifies whether the BP SEI message * contains CPB removal delay deltas. * @num_cpb_removal_delay_deltas_minus1: specifies the number of syntax elements * bp_cpb_removal_delay_delta_val[i] in the BP SEI message. * @cpb_removal_delay_delta_val: specifies the i-th CPB removal delay delta. * @cpb_cnt_minus1: specifies the number of syntax element pairs * bp_nal_initial_cpb_removal_delay and bp_nal_initial_cpb_removal_offset * of the i-th temporal sublayer. * @sublayer_initial_cpb_removal_delay_present_flag: specifies that initial CPB * removal delay related syntax elements are present for sublayer representation. * @nal_initial_cpb_removal_delay: specify the j-th default initial CPB removal * delay for the NAL HRD in units of a 90 kHz clock of the i-th temporal sublayer. * @nal_initial_cpb_removal_offset: specify the j-th default initial CPB removal * offset of the i-th temporal sublayer for the NAL HRD in units of a 90 kHz * clock. * @nal_initial_alt_cpb_removal_delay: specify the j-th alternative initial CPB * removal delay for the NAL HRD in units of a 90 kHz clock of the i-th * temporal sublayer. * @nal_initial_alt_cpb_removal_offset: specify the j-th alternative initial CPB * removal offset of the i-th temporal sublayer for the NAL HRD in units of a * 90 kHz clock. * @vcl_initial_cpb_removal_delay: specify the j-th default initial CPB removal * delay of the i-th temporal sublayer for the VCL HRD in units of a 90 kHz clock. * @vcl_initial_cpb_removal_offset: specify the j-th default initial CPB removal * offset of the i-th temporal sublayer for the VCL HRD in units of a 90 kHz clock. * @vcl_initial_alt_cpb_removal_delay: specify the j-th alternative initial CPB * removal delay of the i-th temporal sublayer for the VCL HRD in units of a * 90 kHz clock. * @vcl_initial_alt_cpb_removal_offset: specify the j-th alternative initial CPB * removal offset of the i-th temporal sublayer for the VCL HRD in units of a * 90 kHz clock. * @sublayer_dpb_output_offsets_present_flag: specifies whether DPB output time * offsets are present for sublayer representation. * @dpb_output_tid_offset: specifies the difference between the DPB output times * for the i-th sublayer representation. * @alt_cpb_params_present_flag: specifies the presence of the syntax element * bp_use_alt_cpb_params_flag. * @use_alt_cpb_params_flag: could be used to derive the value of * UseAltCpbParamsFlag. * * Since: 1.26 */ struct _GstH266BufferingPeriod { guint8 nal_hrd_params_present_flag; guint8 vcl_hrd_params_present_flag; guint8 cpb_initial_removal_delay_length_minus1; guint8 cpb_removal_delay_length_minus1; guint8 dpb_output_delay_length_minus1; guint8 du_hrd_params_present_flag; guint8 du_cpb_removal_delay_increment_length_minus1; guint8 dpb_output_delay_du_length_minus1; guint8 du_cpb_params_in_pic_timing_sei_flag; guint8 du_dpb_params_in_pic_timing_sei_flag; guint8 concatenation_flag; guint8 additional_concatenation_info_present_flag; guint8 max_initial_removal_delay_for_concatenation; guint8 cpb_removal_delay_delta_minus1; guint8 max_sublayers_minus1; guint8 cpb_removal_delay_deltas_present_flag; guint8 num_cpb_removal_delay_deltas_minus1; guint8 cpb_removal_delay_delta_val[16]; guint8 cpb_cnt_minus1; guint8 sublayer_initial_cpb_removal_delay_present_flag; guint8 nal_initial_cpb_removal_delay[8][32]; guint8 nal_initial_cpb_removal_offset[8][32]; guint8 nal_initial_alt_cpb_removal_delay[8][32]; guint8 nal_initial_alt_cpb_removal_offset[8][32]; guint8 vcl_initial_cpb_removal_delay[8][32]; guint8 vcl_initial_cpb_removal_offset[8][32]; guint8 vcl_initial_alt_cpb_removal_delay[8][32]; guint8 vcl_initial_alt_cpb_removal_offset[8][32]; guint8 sublayer_dpb_output_offsets_present_flag; guint32 dpb_output_tid_offset[8]; guint8 alt_cpb_params_present_flag; guint8 use_alt_cpb_params_flag; }; /** * GstH266PicTiming: * * Structure defining the H266 picture timing. * * @cpb_removal_delay_minus: calculate the number of clock ticks between the * nominal CPB removal times of the AU associated with the PT SEI message. * @sublayer_delays_present_flag: specifies whether cpb removal values are * present for the sublayer with TemporalId equal to i. * @cpb_removal_delay_delta_enabled_flag: specifies whether * pt_cpb_removal_delay_delta_idx[i] is present in the PT SEI message. * @cpb_removal_delay_delta_idx: specifies the index of the CPB removal delta. * @cpb_removal_delay_minus1: is used to calculate the number of clock ticks * between the nominal CPB removal times of the AU. * @dpb_output_delay: is used to compute the DPB output time of the AU. * @cpb_alt_timing_info_present_flag: specifies whether the cpb alt syntax * elements could be present in the PT SEI message. * @nal_cpb_alt_initial_removal_delay_delta: specifies whether alternative * initial CPB removal delay delta for the i-th sublayer for the j-th CPB for * the NAL HRD in units of a 90 kHz clock. * @nal_cpb_alt_initial_removal_offset_delta: specifies whether alternative * initial CPB removal offset delta for the i-th sublayer for the j-th CPB for * the NAL HRD in units of a 90 kHz clock. * @nal_cpb_delay_offset: specifies an offset to be used in the derivation of * the nominal CPB removal times of the AU. * @nal_dpb_delay_offset: specifies an offset to be used in the derivation of * the DPB output times of the IRAP AU. * @vcl_cpb_alt_initial_removal_delay_delta: specifies the alternative initial * CPB removal delay delta for the i-th sublayer for the j-th CPB for the VCL * HRD in units of a 90 kHz clock. * @vcl_cpb_alt_initial_removal_offset_delta: specifies the alternative initial * CPB removal offset delta for the i-th sublayer for the j-th CPB for the VCL * HRD in units of a 90 kHz clock. * @vcl_cpb_delay_offset: specifies an offset to be used in the derivation of * the nominal CPB removal times of the AU. * @vcl_dpb_delay_offset: specifies an offset to be used in the derivation of * the DPB output times of the IRAP AU. * @dpb_output_du_delay: is used to compute the DPB output time of the AU when * DecodingUnitHrdFlag is equal to 1. * @num_decoding_units_minus1: specifies the number of DUs in the AU the PT SEI * message is associated with. * @du_common_cpb_removal_delay_flag: specifies whether the syntax elements * pt_du_common_cpb_removal_delay_increment_minus1[i] are present. * @du_common_cpb_removal_delay_increment_minus1: specifies the duration between * the nominal CPB removal times of any two consecutive DUs in decoding order * in the AU. * @num_nalus_in_du_minus1: specifies the number of NAL units in the i-th DU of * the AU the PT SEI message is associated with. * @du_cpb_removal_delay_increment_minus1: specifies the duration between the * nominal CPB removal times of the (i + 1)-th DU and the i-th DU. * @delay_for_concatenation_ensured_flag: specifies that the difference between * the final arrival time and the CPB removal time of the AU is present. * @display_elemental_periods_minus1: indicates the number of elemental picture * period intervals. * * Since: 1.26 */ struct _GstH266PicTiming { guint8 cpb_removal_delay_minus; guint8 sublayer_delays_present_flag[8]; guint8 cpb_removal_delay_delta_enabled_flag[8]; guint8 cpb_removal_delay_delta_idx[8]; guint8 cpb_removal_delay_minus1[8]; guint8 dpb_output_delay; guint8 cpb_alt_timing_info_present_flag; guint8 nal_cpb_alt_initial_removal_delay_delta[8][32]; guint8 nal_cpb_alt_initial_removal_offset_delta[8][32]; guint8 nal_cpb_delay_offset[8]; guint8 nal_dpb_delay_offset[8]; guint8 vcl_cpb_alt_initial_removal_delay_delta[8][32]; guint8 vcl_cpb_alt_initial_removal_offset_delta[8][32]; guint8 vcl_cpb_delay_offset[8]; guint8 vcl_dpb_delay_offset[8]; guint8 dpb_output_du_delay; guint32 num_decoding_units_minus1; guint8 du_common_cpb_removal_delay_flag; guint8 du_common_cpb_removal_delay_increment_minus1[8]; /* TODO: PicSizeInCtbsY could be very large */ guint32 num_nalus_in_du_minus1[600]; guint8 du_cpb_removal_delay_increment_minus1[600][8]; guint8 delay_for_concatenation_ensured_flag; guint8 display_elemental_periods_minus1; }; /** * GstH266DUInfo: * * Structure defining the H266 decoding unit info. * * @decoding_unit_idx: specifies the index to the list of DUs in the current AU. * @sublayer_delays_present_flag: specifies whether * dui_du_cpb_removal_delay_increment[i] is present for the sublayer. * @du_cpb_removal_delay_increment: specifies the duration between the nominal * CPB times of the last DU in decoding order in the current AU. * @dpb_output_du_delay_present_flag: specifies the presence of the * dui_dpb_output_du_delay syntax element in the DUI SEI message. * @dpb_output_du_delay: is used to compute the DPB output time of the AU. * * Since: 1.26 */ struct _GstH266DUInfo { guint32 decoding_unit_idx; guint8 sublayer_delays_present_flag[8]; guint8 du_cpb_removal_delay_increment[8]; guint8 dpb_output_du_delay_present_flag; guint8 dpb_output_du_delay; }; /** * GstH266ScalableNesting: * * Structure defining the H266 scalable nesting. * * @ols_flag: specifies whether the scalable-nested SEI messages apply to * specific OLSs. * @subpic_flag: specifies whether the scalable-nested SEI messages that apply * to specified OLSs or layers apply only to specific subpictures of the * specified OLSs or layers. * @num_olss_minus1: specifies the number of OLSs to which the scalable-nested * SEI messages apply. * @ols_idx_delta_minus1: is used to derive the variable NestingOlsIdx[i]. * @all_layers_flag: specifies whether the scalable-nested SEI messages apply to * all layers that have nuh_layer_id greater than or equal to the nuh_layer_id * of the current SEI NAL unit. * @num_layers_minus1: specifies the number of layers to which the * scalable-nested SEI messages apply. * @layer_id: specifies the nuh_layer_id value of the i-th layer to which the * scalable-nested SEI messages apply. * @num_subpics_minus1: specifies the number of subpictures in each picture in * the multiSubpicLayers. * @subpic_id_len_minus1: specifies the number of bits used to represent the * syntax element sn_subpic_id[i]. * @subpic_id: indicates the subpicture ID of the i-th subpicture in each * picture in the multiSubpicLayers. * @num_seis_minus1: specifies the number of scalable-nested SEI messages. * * Since: 1.26 */ struct _GstH266ScalableNesting { guint8 ols_flag; guint8 subpic_flag; guint8 num_olss_minus1; guint8 ols_idx_delta_minus1[GST_H266_MAX_TOTAL_NUM_OLSS]; guint8 all_layers_flag; guint8 num_layers_minus1; guint8 layer_id[GST_H266_MAX_LAYERS]; guint16 num_subpics_minus1; guint8 subpic_id_len_minus1; guint8 subpic_id[GST_H266_MAX_SLICES_PER_AU]; guint8 num_seis_minus1; }; /** * GstH266SubPicLevelInfo: * * Structure defining the H266 subpicture level information. * * @num_ref_levels_minus1: specifies the number of reference levels signalled * for each subpicture sequences. * @cbr_constraint_flag: specifies whether to decode the sub-bitstreams * resulting from extraction of any subpicture sequence. * @explicit_fraction_present_flag: specifies whether the syntax elements * sli_ref_level_fraction_minus1[ i ] are present. * @num_subpics_minus1: specifies the number of subpictures in the pictures in * the multiSubpicLayers in targetCvss. * @max_sublayers_minus1: specifies the maximum number of temporal sublayers in * the subpicture sequences. * @sublayer_info_present_flag: specifies whether the level information for * subpicture sequences is present for sublayer representation. * @non_subpic_layers_fraction: indicates the i-th fraction of the bitstream * level limits associated with layers in targetCvss. * @ref_level_idc: indicates the i-th level to which each subpicture sequence * conforms as specified in Annex A. * @ref_level_fraction_minus1: specifies the i-th fraction of the level limits * for the subpictures. * * Since: 1.26 */ struct _GstH266SubPicLevelInfo { guint8 num_ref_levels_minus1; guint8 cbr_constraint_flag; guint8 explicit_fraction_present_flag; guint16 num_subpics_minus1; guint8 max_sublayers_minus1; guint8 sublayer_info_present_flag; guint8 non_subpic_layers_fraction[GST_H266_MAX_SUBLAYERS][GST_H266_MAX_SUBLAYERS]; guint8 ref_level_idc[GST_H266_MAX_SUBLAYERS][GST_H266_MAX_SUBLAYERS]; guint8 ref_level_fraction_minus1[GST_H266_MAX_SUBLAYERS][GST_H266_MAX_SLICES_PER_AU][GST_H266_MAX_SUBLAYERS]; }; /** * GstH266FrameFieldInfo: * * Structure defining the H266 frame field information. * * @field_pic_flag: indicates whether the display model considers the current * picture as a field. * @bottom_field_flag: indicates whether the current picture is a bottom field. * @pairing_indicated_flag: indicates whether the current picture is considered * paired with the next picture in output order or with the previous picture * in output order as the two fields of a frame. * @paired_with_next_field_flag: indicates whether the current picture is * considered paired with the next picture as the two fields of a frame. * @display_fields_from_frame_flag: indicates whether the display model operates * by sequentially displaying the individual fields of the frame with * alternating parity. * @top_field_first_flag: indicates that the first field of the frame that is * displayed by the display model is the top field. * @display_elemental_periods_minus1: indicates the number of elemental picture * period intervals that the current coded picture or field occupies for the * display model. * @source_scan_type; indicates whether the source scan type of the associated * picture should be interpreted as progressive. * @duplicate_flag: indicates whether the current picture is indicated to be a * duplicate of a previous picture in output order. * @valid: whether this frame field info is valid. * * Since: 1.26 */ struct _GstH266FrameFieldInfo { guint8 field_pic_flag; guint8 bottom_field_flag; guint8 pairing_indicated_flag; guint8 paired_with_next_field_flag; guint8 display_fields_from_frame_flag; guint8 top_field_first_flag; guint8 display_elemental_periods_minus1; guint8 source_scan_type; guint8 duplicate_flag; gboolean valid; }; /** * GstH266SEIMessage: * * Structure defining the H266 sei message. * * @payloadType: the payload type of #GstH266SEIPayloadType. * @buffering_period: buffering period sei of #GstH266BufferingPeriod. * @pic_timing: picture timing sei of #GstH266PicTiming. * @du_info: decoding unit info sei of #GstH266DUInfo. * @scalable_nesting: scalable nesting sei of #GstH266ScalableNesting. * @subpic_level_info: subpicture level info sei of #GstH266SubPicLevelInfo. * @frame_field_info: frame field info sei of #GstH266FrameFieldInfo. * * Since: 1.26 */ struct _GstH266SEIMessage { GstH266SEIPayloadType payloadType; union { GstH266BufferingPeriod buffering_period; GstH266PicTiming pic_timing; GstH266DUInfo du_info; GstH266ScalableNesting scalable_nesting; GstH266SubPicLevelInfo subpic_level_info; GstH266FrameFieldInfo frame_field_info; /* ... could implement more */ } payload; }; /** * GstH266Parser: * * H266 NAL Parser (opaque structure). * * Since: 1.26 */ struct _GstH266Parser { /*< private >*/ GstH266VPS vps[GST_H266_MAX_VPS_COUNT]; GstH266SPS sps[GST_H266_MAX_SPS_COUNT]; GstH266PPS pps[GST_H266_MAX_PPS_COUNT]; GstH266APS aps[GST_H266_APS_TYPE_MAX][GST_H266_MAX_APS_COUNT]; GstH266VPS *last_vps; GstH266SPS *last_sps; GstH266PPS *last_pps; GstH266APS *last_aps[GST_H266_APS_TYPE_MAX]; GstH266PicHdr ph; GstH266SEIMessage buffering_period; GstH266SEIMessage *last_buffering_period; GstH266VPS *active_vps; GstH266SPS *active_sps; GstH266PPS *active_pps; guint16 ctb_addr_in_slice[GST_H266_MAX_CTUS_IN_PICTURE]; guint16 slice_start_offset[GST_H266_MAX_SLICES_PER_AU]; guint16 num_ctus_in_slice[GST_H266_MAX_SLICES_PER_AU]; guint16 ctb_to_tile_col_bd[GST_H266_MAX_CTUS_IN_PICTURE]; guint16 ctb_to_tile_row_bd[GST_H266_MAX_CTUS_IN_PICTURE]; }; GST_CODEC_PARSERS_API GstH266Parser * gst_h266_parser_new (void); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_identify_nalu (GstH266Parser * parser, const guint8 * data, guint offset, gsize size, GstH266NalUnit * nalu); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_identify_nalu_unchecked (GstH266Parser * parser, const guint8 * data, guint offset, gsize size, GstH266NalUnit * nalu); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_identify_nalu_vvc (GstH266Parser * parser, const guint8 * data, guint offset, gsize size, guint8 nal_length_size, GstH266NalUnit * nalu); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_nal (GstH266Parser * parser, GstH266NalUnit * nalu); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_aud (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266AUD * aud); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_opi (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266OPI * opi); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_dci (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266DCI * dci); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_picture_hdr (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266PicHdr * picture); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_slice_hdr (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266SliceHdr * slice); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_vps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266VPS * vps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_sps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266SPS * sps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_pps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266PPS * pps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_aps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266APS * aps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parser_parse_sei (GstH266Parser * parser, GstH266NalUnit * nalu, GArray ** messages); GST_CODEC_PARSERS_API void gst_h266_parser_free (GstH266Parser * parser); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parse_vps (GstH266NalUnit * nalu, GstH266VPS * vps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parse_sps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266SPS * sps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parse_pps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266PPS * pps); GST_CODEC_PARSERS_API GstH266ParserResult gst_h266_parse_aps (GstH266Parser * parser, GstH266NalUnit * nalu, GstH266APS * aps); GST_CODEC_PARSERS_API const gchar * gst_h266_profile_to_string (GstH266Profile profile); GST_CODEC_PARSERS_API GstH266Profile gst_h266_profile_from_string (const gchar * string); G_END_DECLS