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gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gsth266parser.h
He Junyan 1ec9f829d1 libs: codecparsers: Add the VVC(H266) parser header file 
Co-authored-by: spartazhc <spartazhc@gmail.com>
Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/5003>
2024-11-24 16:49:25 +00:00

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/* Gstreamer H.266 bitstream parser
*
* Copyright (C) 2023 Intel Corporation
* Author: Zhong Hongcheng <spartazhc@gmail.com>
* Author: He Junyan <junyan.he@intel.com>
*
* 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 <gst/gst.h>
#include <gst/codecparsers/codecparsers-prelude.h>
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
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