gstreamer/subprojects/gst-plugins-bad/gst-libs/gst/codecparsers/gstav1parser.h

/*
 * gstav1parser.h
 *
 *  Copyright (C) 2018 Georg Ottinger
 *  Copyright (C) 2019-2020 Intel Corporation
 *    Author: Georg Ottinger<g.ottinger@gmx.at>
 *    Author: Junyan He<junyan.he@hotmail.com>
 *    Author: Victor Jaquez <vjaquez@igalia.com>
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser 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.
 */

#ifndef __GST_AV1_PARSER_H__
#define __GST_AV1_PARSER_H__

#ifndef GST_USE_UNSTABLE_API
#warning "The AV1 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_AV1_MAX_NUM_TEMPORAL_LAYERS        8
#define GST_AV1_MAX_NUM_SPATIAL_LAYERS         4
#define GST_AV1_MAX_TILE_WIDTH                 4096
#define GST_AV1_MAX_TILE_AREA                  (4096 * 2304)
#define GST_AV1_TOTAL_REFS_PER_FRAME           8
#define GST_AV1_MAX_SEGMENTS                   8
#define GST_AV1_SEG_LVL_MAX                    8
#define GST_AV1_MAX_TILE_COLS                  64
#define GST_AV1_MAX_TILE_ROWS                  64

#define GST_AV1_REFS_PER_FRAME                 7
#define GST_AV1_PRIMARY_REF_NONE               7
#define GST_AV1_SUPERRES_NUM                   8
#define GST_AV1_SUPERRES_DENOM_MIN             9
#define GST_AV1_SUPERRES_DENOM_BITS            3
#define GST_AV1_MAX_LOOP_FILTER                63
#define GST_AV1_GM_ABS_TRANS_BITS              12
#define GST_AV1_GM_ABS_TRANS_ONLY_BITS         9
#define GST_AV1_GM_ABS_ALPHA_BITS              12
#define GST_AV1_GM_ALPHA_PREC_BITS             15
#define GST_AV1_GM_TRANS_PREC_BITS             6
#define GST_AV1_GM_TRANS_ONLY_PREC_BITS        3
#define GST_AV1_WARPEDMODEL_PREC_BITS          16
#define GST_AV1_WARP_PARAM_REDUCE_BITS         6
#define GST_AV1_SELECT_SCREEN_CONTENT_TOOLS    2
#define GST_AV1_SELECT_INTEGER_MV              2
#define GST_AV1_RESTORATION_TILESIZE_MAX       256
#define GST_AV1_SEG_LVL_ALT_Q                  0
#define GST_AV1_SEG_LVL_REF_FRAME              5
/* Following defines are derived from the spec, but not mentioned by
 * this particular name in the spec */
#define GST_AV1_CDEF_MAX                       (1 << 3)
#define GST_AV1_MAX_TILE_COUNT                 512
#define GST_AV1_MAX_OPERATING_POINTS    \
  (GST_AV1_MAX_NUM_TEMPORAL_LAYERS * GST_AV1_MAX_NUM_SPATIAL_LAYERS)
#define GST_AV1_MAX_TEMPORAL_GROUP_SIZE        255
#define GST_AV1_MAX_TEMPORAL_GROUP_REFERENCES  7
#define GST_AV1_MAX_NUM_Y_POINTS               16
#define GST_AV1_MAX_NUM_CB_POINTS              16
#define GST_AV1_MAX_NUM_CR_POINTS              16
#define GST_AV1_MAX_NUM_POS_LUMA               25
#define GST_AV1_MAX_NUM_PLANES                 3

#define GST_AV1_DIV_LUT_PREC_BITS              14
#define GST_AV1_DIV_LUT_BITS                   8
#define GST_AV1_DIV_LUT_NUM                    (1 << GST_AV1_DIV_LUT_BITS)


typedef struct _GstAV1Parser GstAV1Parser;
typedef struct _GstAV1ParserState GstAV1ParserState;

typedef struct _GstAV1OBUHeader GstAV1OBUHeader;
typedef struct _GstAV1OBU GstAV1OBU;

typedef struct _GstAV1SequenceHeaderOBU GstAV1SequenceHeaderOBU;
typedef struct _GstAV1MetadataOBU GstAV1MetadataOBU;
typedef struct _GstAV1FrameHeaderOBU GstAV1FrameHeaderOBU;
typedef struct _GstAV1TileListOBU GstAV1TileListOBU;
typedef struct _GstAV1TileListOBUEntry GstAV1TileListOBUEntry;
typedef struct _GstAV1TileGroupOBU GstAV1TileGroupOBU;
typedef struct _GstAV1TileGroupOBUEntry GstAV1TileGroupOBUEntry;
typedef struct _GstAV1FrameOBU GstAV1FrameOBU;

typedef struct _GstAV1OperatingPoint GstAV1OperatingPoint;
typedef struct _GstAV1DecoderModelInfo GstAV1DecoderModelInfo;
typedef struct _GstAV1TimingInfo GstAV1TimingInfo;
typedef struct _GstAV1ColorConfig GstAV1ColorConfig;
typedef struct _GstAV1MetadataITUT_T35 GstAV1MetadataITUT_T35;
typedef struct _GstAV1MetadataHdrCll GstAV1MetadataHdrCll;
typedef struct _GstAV1MetadataHdrMdcv GstAV1MetadataHdrMdcv;
typedef struct _GstAV1MetadataScalability GstAV1MetadataScalability;
typedef struct _GstAV1MetadataTimecode GstAV1MetadataTimecode;
typedef struct _GstAV1LoopFilterParams GstAV1LoopFilterParams;
typedef struct _GstAV1QuantizationParams GstAV1QuantizationParams;
typedef struct _GstAV1SegmenationParams GstAV1SegmenationParams;
typedef struct _GstAV1TileInfo GstAV1TileInfo;
typedef struct _GstAV1CDEFParams GstAV1CDEFParams;
typedef struct _GstAV1LoopRestorationParams GstAV1LoopRestorationParams;
typedef struct _GstAV1GlobalMotionParams GstAV1GlobalMotionParams;
typedef struct _GstAV1FilmGrainParams GstAV1FilmGrainParams;

typedef struct _GstAV1ReferenceFrameInfo GstAV1ReferenceFrameInfo;
typedef struct _GstAV1ReferenceFrameInfoEntry GstAV1ReferenceFrameInfoEntry;

/**
 * GstAV1ParserResult:
 * @GST_AV1_PARSER_OK: successful return
 * @GST_AV1_PARSER_NO_MORE_DATA: the parser needs more data for one OBU
 * @GST_AV1_PARSER_DROP: no need to handle this OBU, skip it
 * @GST_AV1_PARSER_BITSTREAM_ERROR: stream error, for example, include invalid bits
 * @GST_AV1_PARSER_MISSING_OBU_REFERENCE: no reference, for example, no sequence found
 * @GST_AV1_PARSER_INVALID_OPERATION: something like invalid parameters
 *
 * Defines the result of parser process
 */
typedef enum {
  GST_AV1_PARSER_OK = 0,
  GST_AV1_PARSER_NO_MORE_DATA = 1,
  GST_AV1_PARSER_DROP = 2,
  GST_AV1_PARSER_BITSTREAM_ERROR = 3,
  GST_AV1_PARSER_MISSING_OBU_REFERENCE = 4,
  GST_AV1_PARSER_INVALID_OPERATION = 5,
} GstAV1ParserResult;

/**
 * GstAV1Profile:
 * @GST_AV1_PROFILE_0: 8-bit and 10-bit 4:2:0 and 4:0:0 only.
 * @GST_AV1_PROFILE_1: 8-bit and 10-bit 4:4:4.
 * @GST_AV1_PROFILE_2: 8-bit and 10-bit 4:2:2, 12-bit 4:0:0 4:2:2 and 4:4:4
 * @GST_AV1_PROFILE_UNDEFINED: unknow AV1 profile (Since: 1.20)
 *
 * Defines the AV1 profiles
 */
/**
 * GST_AV1_PROFILE_UNDEFINED:
 *
 * unknow AV1 profile
 *
 * Since: 1.20
 */
typedef enum {
  GST_AV1_PROFILE_0 = 0,
  GST_AV1_PROFILE_1 = 1,
  GST_AV1_PROFILE_2 = 2,
  GST_AV1_PROFILE_UNDEFINED,
} GstAV1Profile;

/**
 * GstAV1OBUType:
 * @GST_AV1_OBU_RESERVED_0: Reserved 0
 * @GST_AV1_OBU_SEQUENCE_HEADER: Sequence Header OBU
 * @GST_AV1_OBU_TEMPORAL_DELIMITER: Temporal Delimiter OBU
 * @GST_AV1_OBU_FRAME_HEADER: Frame Header OBU
 * @GST_AV1_OBU_TILE_GROUP: Tile Group OBU
 * @GST_AV1_OBU_METADATA: Metadata OBU
 * @GST_AV1_OBU_FRAME: Frame OBU (includes Frame Header and one Tile Group)
 * @GST_AV1_OBU_REDUNDANT_FRAME_HEADER: Redundant Frame Header OBU
 * @GST_AV1_OBU_TILE_LIST: Tile LIst OBU
 * @GST_AV1_OBU_RESERVED_9: Reserved 9
 * @GST_AV1_OBU_RESERVED_10: Reserved 10
 * @GST_AV1_OBU_RESERVED_11: Reserved 11
 * @GST_AV1_OBU_RESERVED_12: Reserved 12
 * @GST_AV1_OBU_RESERVED_13: Reserved 13
 * @GST_AV1_OBU_RESERVED_14: Reserved 14
 * @GST_AV1_OBU_PADDING: Padding
 *
 * Defines all the possible OBU types
 */
typedef enum {
  GST_AV1_OBU_RESERVED_0 = 0,
  GST_AV1_OBU_SEQUENCE_HEADER = 1,
  GST_AV1_OBU_TEMPORAL_DELIMITER = 2,
  GST_AV1_OBU_FRAME_HEADER = 3,
  GST_AV1_OBU_TILE_GROUP = 4,
  GST_AV1_OBU_METADATA = 5,
  GST_AV1_OBU_FRAME = 6,
  GST_AV1_OBU_REDUNDANT_FRAME_HEADER = 7,
  GST_AV1_OBU_TILE_LIST = 8,
  GST_AV1_OBU_RESERVED_9 = 9,
  GST_AV1_OBU_RESERVED_10 = 10,
  GST_AV1_OBU_RESERVED_11 = 11,
  GST_AV1_OBU_RESERVED_12 = 12,
  GST_AV1_OBU_RESERVED_13 = 13,
  GST_AV1_OBU_RESERVED_14 = 14,
  GST_AV1_OBU_PADDING = 15,
} GstAV1OBUType;

/**
 * GstAV1SeqLevels:
 * @GST_AV1_SEQ_LEVEL_2_0: Level 2.0
 * @GST_AV1_SEQ_LEVEL_2_1: Level 2.1
 * @GST_AV1_SEQ_LEVEL_2_2: Level 2.2
 * @GST_AV1_SEQ_LEVEL_2_3: Level 2.3
 * @GST_AV1_SEQ_LEVEL_3_0: Level 3.0
 * @GST_AV1_SEQ_LEVEL_3_1: Level 3.1
 * @GST_AV1_SEQ_LEVEL_3_2: Level 3.2
 * @GST_AV1_SEQ_LEVEL_3_3: Level 3.3
 * @GST_AV1_SEQ_LEVEL_4_0: Level 4.0
 * @GST_AV1_SEQ_LEVEL_4_1: Level 4.1
 * @GST_AV1_SEQ_LEVEL_4_2: Level 4.2
 * @GST_AV1_SEQ_LEVEL_4_3: Level 4.3
 * @GST_AV1_SEQ_LEVEL_5_0: Level 5.0
 * @GST_AV1_SEQ_LEVEL_5_1: Level 5.1
 * @GST_AV1_SEQ_LEVEL_5_2: Level 5.2
 * @GST_AV1_SEQ_LEVEL_5_3: Level 5.3
 * @GST_AV1_SEQ_LEVEL_6_0: Level 6.0
 * @GST_AV1_SEQ_LEVEL_6_1: Level 6.1
 * @GST_AV1_SEQ_LEVEL_6_2: Level 6.2
 * @GST_AV1_SEQ_LEVEL_6_3: Level 6.3
 * @GST_AV1_SEQ_LEVEL_7_0: Level 7.0
 * @GST_AV1_SEQ_LEVEL_7_1: Level 7.1
 * @GST_AV1_SEQ_LEVEL_7_2: Level 7.2
 * @GST_AV1_SEQ_LEVEL_7_3: Level 7.3
 * @GST_AV1_SEQ_LEVELS: all valid levels
 * @GST_AV1_SEQ_LEVEL_MAX: Maximum parameters
 *
 * Defines all the possible OBU types
 */
typedef enum {
  GST_AV1_SEQ_LEVEL_2_0 = 0,
  GST_AV1_SEQ_LEVEL_2_1 = 1,
  GST_AV1_SEQ_LEVEL_2_2 = 2,
  GST_AV1_SEQ_LEVEL_2_3 = 3,
  GST_AV1_SEQ_LEVEL_3_0 = 4,
  GST_AV1_SEQ_LEVEL_3_1 = 5,
  GST_AV1_SEQ_LEVEL_3_2 = 6,
  GST_AV1_SEQ_LEVEL_3_3 = 7,
  GST_AV1_SEQ_LEVEL_4_0 = 8,
  GST_AV1_SEQ_LEVEL_4_1 = 9,
  GST_AV1_SEQ_LEVEL_4_2 = 10,
  GST_AV1_SEQ_LEVEL_4_3 = 11,
  GST_AV1_SEQ_LEVEL_5_0 = 12,
  GST_AV1_SEQ_LEVEL_5_1 = 13,
  GST_AV1_SEQ_LEVEL_5_2 = 14,
  GST_AV1_SEQ_LEVEL_5_3 = 15,
  GST_AV1_SEQ_LEVEL_6_0 = 16,
  GST_AV1_SEQ_LEVEL_6_1 = 17,
  GST_AV1_SEQ_LEVEL_6_2 = 18,
  GST_AV1_SEQ_LEVEL_6_3 = 19,
  GST_AV1_SEQ_LEVEL_7_0 = 20,
  GST_AV1_SEQ_LEVEL_7_1 = 21,
  GST_AV1_SEQ_LEVEL_7_2 = 22,
  GST_AV1_SEQ_LEVEL_7_3 = 23,
  GST_AV1_SEQ_LEVELS,
  GST_AV1_SEQ_LEVEL_MAX = 31
} GstAV1SeqLevels;

/**
 * GstAV1MetadataType:
 * @GST_AV1_METADATA_TYPE_RESERVED_0: Reserved 0
 * @GST_AV1_METADATA_TYPE_HDR_CLL: Metadata high dynamic range content
 *   light level semantics
 * @GST_AV1_METADATA_TYPE_HDR_MDCV: Metadata high dynamic range mastering
 *   display color volume semantics
 * @GST_AV1_METADATA_TYPE_SCALABILITY: Metadata scalability semantics
 * @GST_AV1_METADATA_TYPE_ITUT_T35: Metadata ITUT T35 semantics
 * @GST_AV1_METADATA_TYPE_TIMECODE: Timecode semantics
 */
typedef enum {
  GST_AV1_METADATA_TYPE_RESERVED_0 = 0,
  GST_AV1_METADATA_TYPE_HDR_CLL = 1,
  GST_AV1_METADATA_TYPE_HDR_MDCV = 2,
  GST_AV1_METADATA_TYPE_SCALABILITY = 3,
  GST_AV1_METADATA_TYPE_ITUT_T35 = 4,
  GST_AV1_METADATA_TYPE_TIMECODE = 5,
} GstAV1MetadataType;

/**
 * GstAV1ScalabilityModes:
 * @GST_AV1_SCALABILITY_L1T2: 1 spatial layer, 2 temporal layers
 * @GST_AV1_SCALABILITY_L1T3: 1 spatial layer, 3 temporal layers
 * @GST_AV1_SCALABILITY_L2T1: 2 spatial layer (ratio 2:1), 1 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_L2T2: 2 spatial layer (ratio 2:1), 2 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_L2T3: 2 spatial layer (ratio 2:1), 3 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_S2T1: 2 spatial layer (ratio 2:1), 1 temporal layer
 * @GST_AV1_SCALABILITY_S2T2: 2 spatial layer (ratio 2:1), 2 temporal layer
 * @GST_AV1_SCALABILITY_S2T3: 2 spatial layer (ratio 2:1), 3 temporal layer
 * @GST_AV1_SCALABILITY_L2T1h: 2 spatial layer (ratio 1.5:1), 1 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_L2T2h: 2 spatial layer (ratio 1.5:1), 2 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_L2T3h: 2 spatial layer (ratio 1.5:1), 3 temporal layer,
 *  inter-layer dependency
 * @GST_AV1_SCALABILITY_S2T1h: 2 spatial layer (ratio 1.5:1), 1 temporal layer
 * @GST_AV1_SCALABILITY_S2T2h: 2 spatial layer (ratio 1.5:1), 2 temporal layer
 * @GST_AV1_SCALABILITY_S2T3h: 2 spatial layer (ratio 1.5:1), 3 temporal layer
 * @GST_AV1_SCALABILITY_SS: Use scalability structure #GstAV1MetadataScalability
 */
typedef enum {
  GST_AV1_SCALABILITY_L1T2 = 0,
  GST_AV1_SCALABILITY_L1T3 = 1,
  GST_AV1_SCALABILITY_L2T1 = 2,
  GST_AV1_SCALABILITY_L2T2 = 3,
  GST_AV1_SCALABILITY_L2T3 = 4,
  GST_AV1_SCALABILITY_S2T1 = 5,
  GST_AV1_SCALABILITY_S2T2 = 6,
  GST_AV1_SCALABILITY_S2T3 = 7,
  GST_AV1_SCALABILITY_L2T1h = 8,
  GST_AV1_SCALABILITY_L2T2h = 9,
  GST_AV1_SCALABILITY_L2T3h = 10,
  GST_AV1_SCALABILITY_S2T1h = 11,
  GST_AV1_SCALABILITY_S2T2h = 12,
  GST_AV1_SCALABILITY_S2T3h = 13,
  GST_AV1_SCALABILITY_SS = 14,
} GstAV1ScalabilityModes;

/**
 * GstAV1ColorPrimaries:
 * @GST_AV1_CP_BT_709: BT.709
 * @GST_AV1_CP_UNSPECIFIED: Unspecified
 * @GST_AV1_CP_BT_470_M: BT.470 System M (historical)
 * @GST_AV1_CP_BT_470_B_G:BT.470 System B, G (historical),
 * @GST_AV1_CP_BT_601: BT.601
 * @GST_AV1_CP_SMPTE_240: SMPTE 240
 * @GST_AV1_CP_GENERIC_FILM: Generic film (color filters using illuminant C,
 * @GST_AV1_CP_BT_2020: BT.2020, BT.2100,
 * @GST_AV1_CP_XYZ: SMPTE 428 (CIE 1921 XYZ),
 * @GST_AV1_CP_SMPTE_431: SMPTE RP 431-2
 * @GST_AV1_CP_SMPTE_432: SMPTE EG 432-1
 * @GST_AV1_CP_EBU_3213: EBU Tech. 3213-E
 */
typedef enum {
  GST_AV1_CP_BT_709 = 1,
  GST_AV1_CP_UNSPECIFIED = 2,
  GST_AV1_CP_BT_470_M = 4,
  GST_AV1_CP_BT_470_B_G = 5,
  GST_AV1_CP_BT_601 = 6,
  GST_AV1_CP_SMPTE_240 = 7,
  GST_AV1_CP_GENERIC_FILM = 8,
  GST_AV1_CP_BT_2020 = 9,
  GST_AV1_CP_XYZ = 10,
  GST_AV1_CP_SMPTE_431 = 11,
  GST_AV1_CP_SMPTE_432 = 12,
  GST_AV1_CP_EBU_3213 = 22,
} GstAV1ColorPrimaries;

/**
 * GstAV1TransferCharacteristics:
 * @GST_AV1_TC_RESERVED_0: For future use
 * @GST_AV1_TC_BT_709: BT.709
 * @GST_AV1_TC_UNSPECIFIED: Unspecified
 * @GST_AV1_TC_RESERVED_3: For future use
 * @GST_AV1_TC_BT_470_M: BT.470 System M (historical)
 * @GST_AV1_TC_BT_470_B_G: BT.470 System B, G (historical)
 * @GST_AV1_TC_BT_601: BT.601
 * @GST_AV1_TC_SMPTE_240: SMPTE 240 M
 * @GST_AV1_TC_LINEAR: Linear
 * @GST_AV1_TC_LOG_100: Logarithmic (100 : 1 range)
 * @GST_AV1_TC_LOG_100_SQRT10: Logarithmic (100 * Sqrt(10) : 1 range)
 * @GST_AV1_TC_IEC_61966: IEC 61966-2-4
 * @GST_AV1_TC_BT_1361: BT.1361
 * @GST_AV1_TC_SRGB: sRGB or sYCC
 * @GST_AV1_TC_BT_2020_10_BIT: BT.2020 10-bit systems
 * @GST_AV1_TC_BT_2020_12_BIT: BT.2020 12-bit systems
 * @GST_AV1_TC_SMPTE_2084: SMPTE ST 2084, ITU BT.2100 PQ
 * @GST_AV1_TC_SMPTE_428: SMPTE ST 428
 * @GST_AV1_TC_HLG: BT.2100 HLG, ARIB STD-B67
 */
typedef enum {
  GST_AV1_TC_RESERVED_0 = 0,
  GST_AV1_TC_BT_709 = 1,
  GST_AV1_TC_UNSPECIFIED = 2,
  GST_AV1_TC_RESERVED_3 = 3,
  GST_AV1_TC_BT_470_M = 4,
  GST_AV1_TC_BT_470_B_G = 5,
  GST_AV1_TC_BT_601 = 6,
  GST_AV1_TC_SMPTE_240 = 7,
  GST_AV1_TC_LINEAR = 8,
  GST_AV1_TC_LOG_100 = 9,
  GST_AV1_TC_LOG_100_SQRT10 = 10,
  GST_AV1_TC_IEC_61966 = 11,
  GST_AV1_TC_BT_1361 = 12,
  GST_AV1_TC_SRGB = 13,
  GST_AV1_TC_BT_2020_10_BIT = 14,
  GST_AV1_TC_BT_2020_12_BIT = 15,
  GST_AV1_TC_SMPTE_2084 = 16,
  GST_AV1_TC_SMPTE_428 = 17,
  GST_AV1_TC_HLG = 18,
} GstAV1TransferCharacteristics;

/**
 * GstAV1MatrixCoefficients:
 * @GST_AV1_MC_IDENTITY: Identity matrix
 * @GST_AV1_MC_BT_709: BT.709
 * @GST_AV1_MC_UNSPECIFIED: Unspecified
 * @GST_AV1_MC_RESERVED_3: For future use
 * @GST_AV1_MC_FCC: US FCC 73.628
 * @GST_AV1_MC_BT_470_B_G: BT.470 System B, G (historical)
 * @GST_AV1_MC_BT_601: BT.601
 * @GST_AV1_MC_SMPTE_240: SMPTE 240 M
 * @GST_AV1_MC_SMPTE_YCGCO: YCgCo
 * @GST_AV1_MC_BT_2020_NCL: BT.2020 non-constant luminance, BT.2100 YCbCr
 * @GST_AV1_MC_BT_2020_CL: BT.2020 constant luminance
 * @GST_AV1_MC_SMPTE_2085: SMPTE ST 2085 YDzDx
 * @GST_AV1_MC_CHROMAT_NCL: Chromaticity-derived non-constant luminance
 * @GST_AV1_MC_CHROMAT_CL: Chromaticity-derived constant luminancw
 * @GST_AV1_MC_ICTCP: BT.2100 ICtCp
 */
typedef enum {
  GST_AV1_MC_IDENTITY = 0,
  GST_AV1_MC_BT_709 = 1,
  GST_AV1_MC_UNSPECIFIED = 2,
  GST_AV1_MC_RESERVED_3 = 3,
  GST_AV1_MC_FCC = 4,
  GST_AV1_MC_BT_470_B_G = 5,
  GST_AV1_MC_BT_601 = 6,
  GST_AV1_MC_SMPTE_240 = 7,
  GST_AV1_MC_SMPTE_YCGCO = 8,
  GST_AV1_MC_BT_2020_NCL = 9,
  GST_AV1_MC_BT_2020_CL = 10,
  GST_AV1_MC_SMPTE_2085 = 11,
  GST_AV1_MC_CHROMAT_NCL = 12,
  GST_AV1_MC_CHROMAT_CL = 13,
  GST_AV1_MC_ICTCP = 14,
} GstAV1MatrixCoefficients;

/**
 * GstAV1ChromaSamplePositions:
 * @GST_AV1_CSP_UNKNOWN: Unknown (in this case the source video transfer
 *  function must be signaled outside the AV1 bitstream).
 * @GST_AV1_CSP_VERTICAL: Horizontally co-located with (0, 0) luma sample,
 *  vertical position in the middle between two luma samples.
 * @GST_AV1_CSP_COLOCATED: co-located with (0, 0) luma sample.
 * @GST_AV1_CSP_RESERVED: For future use.
 */
typedef enum {
  GST_AV1_CSP_UNKNOWN = 0,
  GST_AV1_CSP_VERTICAL = 1,
  GST_AV1_CSP_COLOCATED = 2,
  GST_AV1_CSP_RESERVED = 3,
} GstAV1ChromaSamplePositions;

/**
 * GstAV1FrameType:
 * @GST_AV1_KEY_FRAME: Key Frame
 * @GST_AV1_INTER_FRAME: InterFrame
 * @GST_AV1_INTRA_ONLY_FRAME: Intra-Only Frame
 * @GST_AV1_SWITCH_FRAME: Switch Frame
 */
typedef enum {
  GST_AV1_KEY_FRAME = 0,
  GST_AV1_INTER_FRAME = 1,
  GST_AV1_INTRA_ONLY_FRAME = 2,
  GST_AV1_SWITCH_FRAME = 3,
} GstAV1FrameType;

/**
 * GstAV1InterpolationFilter:
 * @GST_AV1_INTERPOLATION_FILTER_EIGHTTAP: Eighttap
 * @GST_AV1_INTERPOLATION_FILTER_EIGHTTAP_SMOOTH: Eighttap Smooth
 * @GST_AV1_INTERPOLATION_FILTER_EIGHTTAP_SHARP: Eighttap Sharp
 * @GST_AV1_INTERPOLATION_FILTER_BILINEAR: Bilinear
 * @GST_AV1_INTERPOLATION_FILTER_SWITCHABLE: Filter is swichtable
 */
typedef enum {
  GST_AV1_INTERPOLATION_FILTER_EIGHTTAP = 0,
  GST_AV1_INTERPOLATION_FILTER_EIGHTTAP_SMOOTH = 1,
  GST_AV1_INTERPOLATION_FILTER_EIGHTTAP_SHARP = 2,
  GST_AV1_INTERPOLATION_FILTER_BILINEAR = 3,
  GST_AV1_INTERPOLATION_FILTER_SWITCHABLE = 4,
} GstAV1InterpolationFilter;

/**
 * GstAV1TXModes:
 * @GST_AV1_TX_MODE_ONLY_4x4: the inverse transform will use only 4x4 transforms.
 * @GST_AV1_TX_MODE_LARGEST: the inverse transform will use the largest transform
 *   size that fits inside the block.
 * @GST_AV1_TX_MODE_SELECT: the choice of transform size is specified explicitly
 *   for each block.
 */
typedef enum {
  GST_AV1_TX_MODE_ONLY_4x4 = 0,
  GST_AV1_TX_MODE_LARGEST = 1,
  GST_AV1_TX_MODE_SELECT = 2,
} GstAV1TXModes;

/**
 * GstAV1FrameRestorationType:
 * @GST_AV1_FRAME_RESTORE_NONE: no filtering is applied
 * @GST_AV1_FRAME_RESTORE_WIENER: Wiener filter process is invoked
 * @GST_AV1_FRAME_RESTORE_SGRPROJ: self guided filter proces is invoked
 * @GST_AV1_FRAME_RESTORE_SWITCHABLE: restoration filter is swichtable
 */
typedef enum {
  GST_AV1_FRAME_RESTORE_NONE = 0,
  GST_AV1_FRAME_RESTORE_WIENER = 1,
  GST_AV1_FRAME_RESTORE_SGRPROJ = 2,
  GST_AV1_FRAME_RESTORE_SWITCHABLE = 3,
} GstAV1FrameRestorationType;

/**
 * GstAV1ReferenceFrame:
 * @GST_AV1_REF_INTRA_FRAME: Intra Frame Reference
 * @GST_AV1_REF_LAST_FRAME: Last Reference Frame
 * @GST_AV1_REF_LAST2_FRAME: Last2 Reference Frame
 * @GST_AV1_REF_LAST3_FRAME: Last3 Reference Frame
 * @GST_AV1_REF_GOLDEN_FRAME: Golden Reference Frame
 * @GST_AV1_REF_BWDREF_FRAME: BWD Reference Frame
 * @GST_AV1_REF_ALTREF2_FRAME: Alternative2 Reference Frame
 * @GST_AV1_REF_ALTREF_FRAME: Alternative Reference Frame
 * @GST_AV1_NUM_REF_FRAMES: Total Reference Frame Number
 */
typedef enum {
  GST_AV1_REF_INTRA_FRAME = 0,
  GST_AV1_REF_LAST_FRAME = 1,
  GST_AV1_REF_LAST2_FRAME = 2,
  GST_AV1_REF_LAST3_FRAME = 3,
  GST_AV1_REF_GOLDEN_FRAME = 4,
  GST_AV1_REF_BWDREF_FRAME = 5,
  GST_AV1_REF_ALTREF2_FRAME = 6,
  GST_AV1_REF_ALTREF_FRAME = 7,
  GST_AV1_NUM_REF_FRAMES
} GstAV1ReferenceFrame;

/**
 * GstAV1WarpModelType:
 * @GST_AV1_WARP_MODEL_IDENTITY: Warp model is just an identity transform
 * @GST_AV1_WARP_MODEL_TRANSLATION: Warp model is a pure translation
 * @GST_AV1_WARP_MODEL_ROTZOOM: Warp model is a rotation + symmetric zoom
 *     + translation
 * @GST_AV1_WARP_MODEL_AFFINE: Warp model is a general affine transform
 */
typedef enum {
  GST_AV1_WARP_MODEL_IDENTITY = 0,
  GST_AV1_WARP_MODEL_TRANSLATION = 1,
  GST_AV1_WARP_MODEL_ROTZOOM = 2,
  GST_AV1_WARP_MODEL_AFFINE = 3,
} GstAV1WarpModelType;

/**
 * GstAV1OBUHeader:
 * @obu_type: the type of data structure contained in the OBU payload.
 * @obu_extention_flag: indicates if OBU header extention is present.
 * @obu_has_size_field: equal to 1 indicates that the obu_size syntax element will be
 *   present. @obu_has_size_field equal to 0 indicates that the @obu_size syntax element
 *   will not be present.
 * @obu_temporal_id: specifies the temporal level of the data contained in the OBU.
 * @obu_spatial_id: specifies the spatial level of the data contained in the OBU.
 *
 * Collect info for OBU header and OBU extension header if
 * obu_extension_flag == 1.
 */
struct _GstAV1OBUHeader {
  GstAV1OBUType obu_type;
  gboolean obu_extention_flag;
  gboolean obu_has_size_field;
  guint8 obu_temporal_id;
  guint8 obu_spatial_id;
};

/**
 * GstAV1OBU:
 * @header: a #GstAV1OBUHeader OBU Header
 * @obu_type: the type of data structure contained in the OBU payload.
 * @data: references the current data chunk that holds the OBU
 * @obu_size: size of the OBU, not include header size
 *
 * It is the general representation of AV1 OBU (Open Bitstream
 * Unit). One OBU include its header and payload.
 */
struct _GstAV1OBU {
  GstAV1OBUHeader header;
  GstAV1OBUType obu_type;
  guint8 *data;
  guint32 obu_size;
};

/**
 * GstAV1OperatingPoint:
 * @seq_level_idx: specifies the level that the coded video sequence conforms to.
 * @seq_tier: specifies the tier that the coded video sequence conforms to.
 * @idc: contains a bitmask that indicates which spatial and temporal layers should be
 *   decoded. Bit k is equal to 1 if temporal layer k should be decoded (for k between
 *   0 and 7). Bit j+8 is equal to 1 if spatial layer j should be decoded (for j between
 *   0 and 3).
 * @decoder_model_present_for_this_op: equal to one indicates that there is a decoder model
 *   associated with this operating point. @decoder_model_present_for_this_op equal to zero
 *   indicates that there is not a decoder model associated.
 * @decoder_buffer_delay: specifies the time interval between the arrival of the first bit
 *   in the smoothing buffer and the subsequent removal of the data that belongs to the
 *   first coded frame for operating point op, measured in units of 1/90000 seconds. The
 *   length of @decoder_buffer_delay is specified by @buffer_delay_length_minus_1 + 1, in bits.
 * @encoder_buffer_delay: specifies, in combination with @decoder_buffer_delay syntax element,
 *   the first bit arrival time of frames to be decoded to the smoothing buffer.
 *   @encoder_buffer_delay is measured in units of 1/90000 seconds. For a video sequence that
 *   includes one or more random access points the sum of @decoder_buffer_delay and
 *   @encoder_buffer_delay shall be kept constant.
 * @low_delay_mode_flag: equal to 1 indicates that the smoothing buffer operates in low-delay
 *   mode for operating point op. In low-delay mode late decode times and buffer underflow
 *   are both permitted. @low_delay_mode_flag equal to 0 indicates that the smoothing buffer
 *   operates in strict mode, where buffer underflow is not allowed.
 * @initial_display_delay_present_for_this_op: equal to 1 indicates that
 *   @initial_display_delay_minus_1 is specified for this operating. 0 indicates that
 *   @initial_display_delay_minus_1 is not specified for this operating point.
 * @initial_display_delay_minus_1: plus 1 specifies, for operating point i, the number of
 *   decoded frames that should be present in the buffer pool before the first presentable
 *   frame is displayed. This will ensure that all presentable frames in the sequence can
 *   be decoded at or before the time that they are scheduled for display.
 */
struct _GstAV1OperatingPoint {
  guint8 seq_level_idx;
  guint8 seq_tier;
  guint16 idc;
  gboolean decoder_model_present_for_this_op;
  guint8 decoder_buffer_delay;
  guint8 encoder_buffer_delay;
  gboolean low_delay_mode_flag;
  gboolean initial_display_delay_present_for_this_op;
  guint8 initial_display_delay_minus_1;
};

/**
 * GstAV1DecoderModelInfo:
 * @buffer_delay_length_minus_1: plus 1 specifies the length of the
 *   @decoder_buffer_delay and the @encoder_buffer_delay syntax elements,
 *   in bits.
 * @num_units_in_decoding_tick: is the number of time units of a decoding clock
 *   operating at the frequency @time_scale Hz that corresponds to one increment
 *   of a clock tick counter.
 * @buffer_removal_time_length_minus_1: plus 1 specifies the length of the
 *   @buffer_removal_time syntax element, in bits.
 * @frame_presentation_time_length_minus_1: plus 1 specifies the length of the
 *   @frame_presentation_time syntax element, in bits.
 */
struct _GstAV1DecoderModelInfo {
  guint8 buffer_delay_length_minus_1;
  guint32 num_units_in_decoding_tick;
  guint8 buffer_removal_time_length_minus_1;
  guint8 frame_presentation_time_length_minus_1;
};

/**
 * GstAV1TimingInfo:
 * @num_units_in_display_tick: is the number of time units of a clock operating at the
 *   frequency @time_scale Hz that corresponds to one increment of a clock tick counter.
 *   A clock tick, in seconds, is equal to num_units_in_display_tick divided by time_scale.
 *   It is a requirement of bitstream conformance that num_units_in_display_tick is greater
 *   than 0.
 * @time_scale: is the number of time units that pass in one second. It is a requirement of
 *   bitstream conformance that @time_scale is greater than 0.
 * @equal_picture_interval: equal to 1 indicates that pictures should be displayed according
 *   to their output order with the number of ticks between two consecutive pictures (without
 *   dropping frames) specified by @num_ticks_per_picture_minus_1 + 1. @equal_picture_interval
 *   equal to 0 indicates that the interval between two consecutive pictures is not specified.
 * @num_ticks_per_picture_minus_1: plus 1 specifies the number of clock ticks corresponding
 *   to output time between two consecutive pictures in the output order. It is a requirement
 *   of bitstream conformance that the value of @num_ticks_per_picture_minus_1 shall be in the
 *   range of 0 to (1 << 32) - 2, inclusive.
 */
struct _GstAV1TimingInfo {
  guint32 num_units_in_display_tick;
  guint32 time_scale;
  gboolean equal_picture_interval;
  guint32 num_ticks_per_picture_minus_1;
};

/**
 * GstAV1ColorConfig:
 * @high_bitdepth: syntax element which, together with @seq_profile, determine the bit depth.
 * @twelve_bit: is syntax elements which, together with @seq_profile and @high_bitdepth,
 *   determines the bit depth.
 * @mono_chrome: equal to 1 indicates that the video does not contain U and V color planes.
 *   @mono_chrome equal to 0 indicates that the video contains Y, U, and V color planes.
 * @color_description_present_flag: equal to 1 specifies that color_primaries,
 *   @transfer_characteristics, and @matrix_coefficients are present.
 *   @color_description_present_flag equal to 0 specifies that @color_primaries,
 *   @transfer_characteristics and @matrix_coefficients are not present.
 * @color_primaries: is an integer that is defined by the "Color primaries" section of
 *   ISO/IEC 23091-4/ITU-T H.273.
 * @transfer_characteristics: is an integer that is defined by the "Transfer characteristics"
 *   section of ISO/IEC 23091-4/ITU-T H.273.
 * @matrix_coefficients: is an integer that is defined by the "Matrix coefficients" section
 *   of ISO/IEC 23091-4/ITU-T H.273.
 * @color_range: is a binary value that is associated with the VideoFullRangeFlag variable
 *   specified in ISO/IEC 23091-4/ITU-T H.273. color range equal to 0 shall be referred to
 *   as the studio swing representation and color range equal to 1 shall be referred to as
 *   the full swing representation for all intents relating to this specification.
 * @subsampling_x, @subsampling_y: specify the chroma subsampling format. If
 *   @matrix_coefficients is equal to GST_AV1_MC_IDENTITY, it is a requirement of bitstream
 *   conformance that @subsampling_x is equal to 0 and @subsampling_y is equal to 0.
 * @chroma_sample_position specifies the sample position for subsampled streams:
 * @separate_uv_delta_q: equal to 1 indicates that the U and V planes may have separate
 *  delta quantizer values. @separate_uv_delta_q equal to 0 indicates that the U and V
 *  planes will share the same delta quantizer value.
 */
struct _GstAV1ColorConfig {
  gboolean high_bitdepth;
  gboolean twelve_bit;
  gboolean mono_chrome;
  gboolean color_description_present_flag;
  GstAV1ColorPrimaries color_primaries;
  GstAV1TransferCharacteristics transfer_characteristics;
  GstAV1MatrixCoefficients matrix_coefficients;
  gboolean color_range;
  guint8 subsampling_x;
  guint8 subsampling_y;
  GstAV1ChromaSamplePositions chroma_sample_position;
  gboolean separate_uv_delta_q;
};

/**
 * GstAV1SequenceHeaderOBU:
 * @seq_profile: specifies the features that can be used in the coded video sequence
 * @still_picture: equal to 1 specifies that the bitstream contains only one coded frame.
 * @reduced_still_picture_header: specifies that the syntax elements not needed by a still
 *   picture are omitted.
 * @frame_width_bits_minus_1: specifies the number of bits minus 1 used for transmitting
 *   the frame width syntax elements.
 * @frame_height_bits_minus_1: specifies the number of bits minus 1 used for transmitting
 *   the frame height syntax elements.
 * @max_frame_width_minus_1: specifies the maximum frame width minus 1 for the frames
 *   represented by this sequenceheader.
 * @max_frame_height_minus_1: specifies the maximum frame height minus 1 for the frames
 *   represented by this sequenceheader.
 * @frame_id_numbers_present_flag: specifies whether frame id numbers are present in the bitstream.
 * @delta_frame_id_length_minus_2: specifies the number of bits minus 2 used to encode
 *   delta_frame_id syntax elements.
 * @additional_frame_id_length_minus_1: is used to calculate the number of bits used to
 *   encode the frame_id syntax element.
 * @use_128x128_superblock: when equal to 1, indicates that superblocks contain 128x128 luma
 *   samples. When equal to 0, it indicates that superblocks contain 64x64 luma samples.
 *   (The number of contained chroma samples depends on @subsampling_x and @subsampling_y).
 * @enable_filter_intra: equal to 1 specifies that the @use_filter_intra syntax element may
 *   be present. @enable_filter_intra equal to 0 specifies that the @use_filter_intra syntax
 *   element will not be present.
 * @enable_intra_edge_filter: specifies whether the intra edge filtering process should be enabled.
 * @enable_interintra_compound: equal to 1 specifies that the mode info for inter blocks may
 *   contain the syntax element interintra. @enable_interintra_compound equal to 0 specifies
 *   that the syntax element interintra will not be present.
 * @enable_masked_compound: equal to 1 specifies that the mode info for inter blocks may
 *   contain the syntax element @compound_type. @enable_masked_compound equal to 0 specifies
 *   that the syntax element @compound_type will not be present.
 * @enable_warped_motion: equal to 1 indicates that the allow_warped_motion syntax element
 *   may be present. @enable_warped_motion equal to 0 indicates that the @allow_warped_motion
 *   syntax element will not be present.
 * @enable_order_hint: equal to 1 indicates that tools based on the values of order hints
 *   may be used. @enable_order_hint equal to 0 indicates that tools based on order hints
 *   are disabled.
 * @enable_dual_filter: equal to 1 indicates that the inter prediction filter type may be
 *   specified independently in the horizontal and vertical directions. If the flag is equal
 *   to 0, only one filter type may be specified, which is then used in both directions.
 * @enable_jnt_comp: equal to 1 indicates that the distance weights process may be used
 *   for inter prediction.
 * @enable_ref_frame_mvs: equal to 1 indicates that the @use_ref_frame_mvs syntax element
 *   may be present. @enable_ref_frame_mvs equal to 0 indicates that the @use_ref_frame_mvs
 *   syntax element will not be present.
 * @seq_choose_screen_content_tools: equal to 0 indicates that the @seq_force_screen_content_tools
 *   syntax element will be present. @seq_choose_screen_content_tools equal to 1 indicates
 *   that @seq_force_screen_content_tools should be set equal to SELECT_SCREEN_CONTENT_TOOLS.
 * @seq_force_screen_content_tools: equal to SELECT_SCREEN_CONTENT_TOOLS indicates that the
 *   @allow_screen_content_tools syntax element will be present in the frame header. Otherwise,
 *   @seq_force_screen_content_tools contains the value for @allow_screen_content_tools.
 * @seq_choose_integer_mv: equal to 0 indicates that the seq_force_integer_mv syntax element
 *   will be present. @seq_choose_integer_mv equal to 1 indicates that @seq_force_integer_mv
 *   should be set equal to SELECT_INTEGER_MV.
 * @seq_force_integer_mv: equal to SELECT_INTEGER_MV indicates that the @force_integer_mv
 *   syntax element will be present in the frame header (providing allow_screen_content_tools
 *   is equal to 1). Otherwise, @seq_force_integer_mv contains the value for @force_integer_mv.
 * @order_hint_bits_minus_1: is used to compute OrderHintBits.
 * @enable_superres: equal to 1 specifies that the use_superres syntax element will be present
 *   in the uncompressed header. enable_superres equal to 0 specifies that the use_superres
 *   syntax element will not be present (instead use_superres will be set to 0 in the
 *   uncompressed header without being read).
 * @enable_cdef: equal to 1 specifies that cdef filtering may be enabled. enable_cdef equal
 *   to 0 specifies that cdef filtering is disabled.
 * @enable_restoration: equal to 1 specifies that loop restoration filtering may be enabled.
 *   enable_restoration equal to 0 specifies that loop restoration filtering is disabled.
 * @film_grain_params_present: specifies whether film grain parameters are present in the bitstream.
 * @operating_points_cnt_minus_1: indicates the number of operating points minus 1 present
 *   in this bitstream.
 * @operating_points: specifies the corresponding operating point for a set of operating
 *   parameters.
 * @decoder_model_info_present_flag: specifies whether the decoder model info is present in
 *   the bitstream.
 * @decoder_model_info: holds information about the decoder model.
 * @initial_display_delay_present_flag: specifies whether initial display delay information
 *   is present in the bitstream or not.
 * @timing_info_present_flag: specifies whether timing info is present in the bitstream.
 * @timing_info: holds the timing information.
 * @color_config: hold the color configuration.
 * @order_hint_bits: specifies the number of bits used for the order_hint syntax element.
 * @bit_depth: the bit depth of the stream.
 * @num_planes: the YUV plane number.
 */
struct _GstAV1SequenceHeaderOBU {
  GstAV1Profile seq_profile;
  gboolean still_picture;
  guint8 reduced_still_picture_header;

  guint8 frame_width_bits_minus_1;
  guint8 frame_height_bits_minus_1;
  guint16 max_frame_width_minus_1;
  guint16 max_frame_height_minus_1;

  gboolean frame_id_numbers_present_flag;
  guint8 delta_frame_id_length_minus_2;
  guint8 additional_frame_id_length_minus_1;

  gboolean use_128x128_superblock;
  gboolean enable_filter_intra;
  gboolean enable_intra_edge_filter;
  gboolean enable_interintra_compound;
  gboolean enable_masked_compound;
  gboolean enable_warped_motion;
  gboolean enable_order_hint;
  gboolean enable_dual_filter;
  gboolean enable_jnt_comp;
  gboolean enable_ref_frame_mvs;
  gboolean seq_choose_screen_content_tools;
  guint8 seq_force_screen_content_tools;
  gboolean seq_choose_integer_mv;
  guint8 seq_force_integer_mv;
  gint8 order_hint_bits_minus_1;

  gboolean enable_superres;
  gboolean enable_cdef;
  gboolean enable_restoration;

  guint8 film_grain_params_present;

  guint8 operating_points_cnt_minus_1;
  GstAV1OperatingPoint operating_points[GST_AV1_MAX_OPERATING_POINTS];

  gboolean decoder_model_info_present_flag;
  GstAV1DecoderModelInfo decoder_model_info;
  guint8 initial_display_delay_present_flag;

  gboolean timing_info_present_flag;
  GstAV1TimingInfo timing_info;

  GstAV1ColorConfig color_config;

  /* Global var calculated by sequence */
  guint8 order_hint_bits; /* OrderHintBits */
  guint8 bit_depth; /* BitDepth */
  guint8 num_planes; /* NumPlanes */
};

/**
 * GstAV1MetadataITUT_T35:
 * @itu_t_t35_country_code: shall be a byte having a value specified as a country code by
 *   Annex A of Recommendation ITU-T T.35.
 * @itu_t_t35_country_code_extension_byte: shall be a byte having a value specified as a
 *   country code by Annex B of Recommendation ITU-T T.35.
 * @itu_t_t35_payload_bytes: shall be bytes containing data registered as specified in
 *   Recommendation ITU-T T.35.
 */
struct _GstAV1MetadataITUT_T35 {
  guint8 itu_t_t35_country_code;
  guint8 itu_t_t35_country_code_extention_byte;
  /* itu_t_t35_payload_bytes - not specified at this spec */
  guint8 *itu_t_t35_payload_bytes;
};

/**
 * GstAV1MetadataHdrCll:
 * @max_cll: specifies the maximum content light level as specified in CEA-861.3, Appendix A.
 * @max_fall: specifies the maximum frame-average light level as specified in CEA-861.3, Appendix A.
 *
 * High Dynamic Range content light level syntax metadata.
 */
struct _GstAV1MetadataHdrCll {
  guint16 max_cll;
  guint16 max_fall;
};

/**
 * GstAV1MetadataHdrMdcv:
 * @primary_chromaticity_x: specifies a 0.16 fixed-point X chromaticity coordinate as
 *   defined by CIE 1931, where i = 0,1,2 specifies Red, Green, Blue respectively.
 * @primary_chromaticity_y: specifies a 0.16 fixed-point Y chromaticity coordinate as
 *   defined by CIE 1931, where i = 0,1,2 specifies Red, Green, Blue respectively.
 * @white_point_chromaticity_x: specifies a 0.16 fixed-point white X chromaticity coordinate
 *   as defined by CIE 1931.
 * @white_point_chromaticity_y: specifies a 0.16 fixed-point white Y chromaticity coordinate
 *   as defined by CIE 1931.
 * @luminance_max: is a 24.8 fixed-point maximum luminance, represented in candelas per
 *   square meter.
 * @luminance_min: is a 18.14 fixed-point minimum luminance, represented in candelas per
 *   square meter.
 *
 *  High Dynamic Range mastering display color volume metadata.
 */
struct _GstAV1MetadataHdrMdcv {
  guint16 primary_chromaticity_x[3];
  guint16 primary_chromaticity_y[3];
  guint16 white_point_chromaticity_x;
  guint16 white_point_chromaticity_y;
  guint32 luminance_max;
  guint32 luminance_min;
};

/**
 * GstAV1MetadataScalability:
 * @scalability_mode_idc: indicates the picture prediction structure of the bitstream.
 * @spatial_layers_cnt_minus_1: indicates the number of spatial layers present in the video
 *   sequence minus one.
 * @spatial_layer_description_present_flag: indicates when set to 1 that the
 *   spatial_layer_ref_id is present for each of the (@spatial_layers_cnt_minus_1 + 1) layers,
 *   or that it is not present when set to 0.
 * @spatial_layer_dimensions_present_flag: indicates when set to 1 that the
 *   @spatial_layer_max_width and @spatial_layer_max_height parameters are present for each of
 *   the (@spatial_layers_cnt_minus_1 + 1) layers, or that it they are not present when set to 0.
 * @temporal_group_description_present_flag: indicates when set to 1 that the temporal
 *   dependency information is present, or that it is not when set to 0.
 * @spatial_layer_max_width: specifies the maximum frame width for the frames with
 *   @spatial_id equal to i. This number must not be larger than @max_frame_width_minus_1 + 1.
 * @spatial_layer_max_height: specifies the maximum frame height for the frames with
 *   @spatial_id equal to i. This number must not be larger than @max_frame_height_minus_1 + 1.
 * @spatial_layer_ref_id: specifies the @spatial_id value of the frame within the current
 *   temporal unit that the frame of layer i uses for reference. If no frame within the
 *   current temporal unit is used for reference the value must be equal to 255.
 * @temporal_group_size: indicates the number of pictures in a temporal picture group. If the
 *   @temporal_group_size is greater than 0, then the scalability structure data allows the
 *   inter-picture temporal dependency structure of the video sequence to be specified. If the
 *   @temporal_group_size is greater than 0, then for @temporal_group_size pictures in the
 *   temporal group, each picture's temporal layer id (@temporal_id), switch up points
 *   (@temporal_group_temporal_switching_up_point_flag and
 *   @temporal_group_spatial_switching_up_point_flag), and the reference picture indices
 *   (@temporal_group_ref_pic_diff) are specified. The first picture specified in a temporal
 *   group must have @temporal_id equal to 0. If the parameter @temporal_group_size is not
 *   present or set to 0, then either there is only one temporal layer or there is no fixed
 *   inter-picture temporal dependency present going forward in the video sequence. Note that
 *   for a given picture, all frames follow the same inter-picture temporal dependency
 *   structure. However, the frame rate of each layer can be different from each other. The
 *   specified dependency structure in the scalability structure data must be for the highest
 *   frame rate layer.
 * @temporal_group_temporal_id: specifies the temporal_id value for the i-th picture in
 *   the temporal group.
 * @temporal_group_temporal_switching_up_point_flag: is set to 1 if subsequent (in decoding
 *   order) pictures with a @temporal_id higher than @temporal_group_temporal_id[i] do not
 *   depend on any picture preceding the current picture (in coding order) with @temporal_id
 *   higher than @temporal_group_temporal_id[ i ].
 * @temporal_group_spatial_switching_up_point_flag: is set to 1 if spatial layers of the
 *   current picture in the temporal group (i.e., pictures with a spatial_id higher than zero)
 *   do not depend on any picture preceding the current picture in the temporal group.
 * @temporal_group_ref_cnt: indicates the number of reference pictures used by the i-th
 *   picture in the temporal group.
 * @temporal_group_ref_pic_diff: indicates, for the i-th picture in the temporal group,
 *   the temporal distance between the i-th picture and the j-th reference picture used by
 *   the i-th picture. The temporal distance is measured in frames, counting only frames of
 *   identical @spatial_id values.
 *
 * The scalability metadata OBU is intended for use by intermediate
 * processing entities that may perform selective layer elimination.
 */
struct _GstAV1MetadataScalability {
  GstAV1ScalabilityModes scalability_mode_idc;
  guint8 spatial_layers_cnt_minus_1;
  gboolean spatial_layer_dimensions_present_flag;
  gboolean spatial_layer_description_present_flag;
  gboolean temporal_group_description_present_flag;
  guint16 spatial_layer_max_width[GST_AV1_MAX_NUM_SPATIAL_LAYERS];
  guint16 spatial_layer_max_height[GST_AV1_MAX_NUM_SPATIAL_LAYERS];
  guint8 spatial_layer_ref_id[GST_AV1_MAX_NUM_SPATIAL_LAYERS];
  guint8 temporal_group_size;

  guint8 temporal_group_temporal_id[GST_AV1_MAX_TEMPORAL_GROUP_SIZE];
  guint8 temporal_group_temporal_switching_up_point_flag[GST_AV1_MAX_TEMPORAL_GROUP_SIZE];
  guint8 temporal_group_spatial_switching_up_point_flag[GST_AV1_MAX_TEMPORAL_GROUP_SIZE];
  guint8 temporal_group_ref_cnt[GST_AV1_MAX_TEMPORAL_GROUP_SIZE];
  guint8 temporal_group_ref_pic_diff[GST_AV1_MAX_TEMPORAL_GROUP_SIZE]
                                    [GST_AV1_MAX_TEMPORAL_GROUP_REFERENCES];
};

/**
 * GstAV1MetadataTimecode:
 * @counting_type: specifies the method of dropping values of the n_frames syntax element as
 *   specified in AV1 Spec 6.1.1. @counting_type should be the same for all pictures in the
 *   coded video sequence.
 * @full_timestamp_flag: equal to 1 indicates that the the @seconds_value, @minutes_value,
 *   @hours_value syntax elements will be present. @full_timestamp_flag equal to 0 indicates
 *   that there are flags to control the presence of these syntax elements.
 * @discontinuity_flag: equal to 0 indicates that the difference between the current value
 *   of clockTimestamp and the value of clockTimestamp computed from the previous set of
 *   timestamp syntax elements in output order can be interpreted as the time difference
 *   between the times of origin or capture of the associated frames or fields.
 *   @discontinuity_flag equal to 1 indicates that the difference between the current value of
 *   clockTimestamp and the value of clockTimestamp computed from the previous set of clock
 *   timestamp syntax elements in output order should not be interpreted as the time difference
 *   between the times of origin or capture of the associated frames or fields.
 * @cnt_dropped_flag: specifies the skipping of one or more values of @n_frames using the
 *   counting method specified by counting_type.
 * @n_frames: is used to compute clockTimestamp. When @timing_info_present_flag is equal to 1,
 *   @n_frames shall be less than maxFps, where maxFps is specified by
 *   maxFps = ceil( time_scale / ( 2 * @num_units_in_display_tick ) ).
 * @seconds_flag: equal to 1 specifies that @seconds_value and @minutes_flag are present when
 *   @full_timestamp_flag is equal to 0. @seconds_flag equal to 0 specifies that @seconds_value
 *   and @minutes_flag are not present.
 * @seconds_value: is used to compute clockTimestamp and shall be in the range of 0 to 59.
 *   When @seconds_value is not present, its value is inferred to be equal to the value of
 *   @seconds_value for the previous set of clock timestamp syntax elements in decoding order,
 *   and it is required that such a previous @seconds_value shall have been present.
 * @minutes_flag: equal to 1 specifies that @minutes_value and @hours_flag are present when
 *   @full_timestamp_flag is equal to 0 and @seconds_flag is equal to 1. @minutes_flag equal to 0
 *   specifies that @minutes_value and @hours_flag are not present.
 * @minutes_value: specifies the value of mm used to compute clockTimestamp and shall be in
 *   the range of 0 to 59, inclusive. When minutes_value is not present, its value is inferred
 *   to be equal to the value of @minutes_value for the previous set of clock timestamp syntax
 *   elements in decoding order, and it is required that such a previous @minutes_value shall
 *   have been present.
 * @hours_flag: equal to 1 specifies that @hours_value is present when @full_timestamp_flag is
 *   equal to 0 and @seconds_flag is equal to 1 and @minutes_flag is equal to 1.
 * @hours_value: is used to compute clockTimestamp and shall be in the range of 0 to 23,
 *   inclusive. When @hours_value is not present, its value is inferred to be equal to the
 *   value of @hours_value for the previous set of clock timestamp syntax elements in decoding
 *   order, and it is required that such a previous @hours_value shall have been present.
 * @time_offset_length: greater than 0 specifies the length in bits of the @time_offset_value
 *   syntax element. @time_offset_length equal to 0 specifies that the @time_offset_value syntax
 *   element is not present. @time_offset_length should be the same for all pictures in the
 *   coded video sequence.
 * @time_offset_value: is used to compute clockTimestamp. The number of bits used to represent
 *   @time_offset_value is equal to @time_offset_length. When @time_offset_value is not present,
 *   its value is inferred to be equal to 0.
 */
struct _GstAV1MetadataTimecode {
  guint8 counting_type;       /* candidate for sperate Type GstAV1TimecodeCountingType */
  gboolean full_timestamp_flag;
  gboolean discontinuity_flag;
  gboolean cnt_dropped_flag;
  guint8 n_frames;
  gboolean seconds_flag;
  guint8 seconds_value;
  gboolean minutes_flag;
  guint8 minutes_value;
  gboolean hours_flag;
  guint8 hours_value;
  guint8 time_offset_length;
  guint32 time_offset_value;
};

/**
 * GstAV1MetadataOBU:
 * @metadata_type: type of metadata
 * @itut_t35: ITUT T35 metadata
 * @hdrcll: high dynamic range content light level metadata
 * @hdrcmdcv: high dynamic range mastering display color volume metadata_type
 * @scalability: Scalability metadata
 * @timecode: Timecode metadata
 */
struct _GstAV1MetadataOBU {
  GstAV1MetadataType metadata_type;
  union {
    GstAV1MetadataITUT_T35 itut_t35;
    GstAV1MetadataHdrCll hdr_cll;
    GstAV1MetadataHdrMdcv hdr_mdcv;
    GstAV1MetadataScalability scalability;
    GstAV1MetadataTimecode timecode;
  };
};

/**
 * GstAV1LoopFilterParams:
 * @loop_filter_level: is an array containing loop filter strength values. Different loop
 *   filter strength values from the array are used depending on the image plane being
 *   filtered, and the edge direction (vertical or horizontal) being filtered.
 * @loop_filter_sharpness: indicates the sharpness level. The @loop_filter_level and
 *   @loop_filter_sharpness together determine when a block edge is filtered, and by how much
 *   the filtering can change the sample values. The loop filter process is described in AV1
 *   Bitstream Spec. section 7.14.
 * @loop_filter_delta_enabled: equal to 1 means that the filter level depends on the mode and
 *   reference frame used to predict a block. @loop_filter_delta_enabled equal to 0 means that
 *   the filter level does not depend on the mode and reference frame.
 * @loop_filter_delta_update: equal to 1 means that the bitstream contains additional syntax
 *   elements that specify which mode and reference frame deltas are to be updated.
 *   @loop_filter_delta_update equal to 0 means that these syntax elements are not present.
 * @loop_filter_ref_deltas: contains the adjustment needed for the filter level based on
 *   the chosen reference frame. If this syntax element is not present in the bitstream,
 *   it maintains its previous value.
 * @loop_filter_mode_deltas: contains the adjustment needed for the filter level based on
 *   the chosen mode. If this syntax element is not present in the bitstream, it maintains
 *   its previous value.
 * @delta_lf_present: specifies whether loop filter delta values are present in the bitstream.
 * @delta_lf_res: specifies the left shift which should be applied to decoded loop filter
 *   delta values.
 * @delta_lf_multi: equal to 1 specifies that separate loop filter deltas are sent for
 *   horizontal luma edges, vertical luma edges, the U edges, and the V edges. @delta_lf_multi
 *   equal to 0 specifies that the same loop filter delta is used for all edges.
 */
struct _GstAV1LoopFilterParams {
  guint8 loop_filter_level[4];
  guint8 loop_filter_sharpness;
  gboolean loop_filter_delta_enabled;
  gboolean loop_filter_delta_update;

  gint8 loop_filter_ref_deltas[GST_AV1_TOTAL_REFS_PER_FRAME];
  gint8 loop_filter_mode_deltas[2];

  gboolean delta_lf_present;
  guint8 delta_lf_res;
  guint8 delta_lf_multi;
};

/**
 * GstAV1QuantizationParams:
 * @base_q_idx: indicates the base frame qindex. This is used for Y AC coefficients and as
 *   the base value for the other quantizers.
 * @diff_uv_delta: equal to 1 indicates that the U and V delta quantizer values are coded
 *   separately. @diff_uv_delta equal to 0 indicates that the U and V delta quantizer values
 *   share a common value.
 * @using_qmatrix: specifies that the quantizer matrix will be used to compute quantizers.
 * @qm_y: specifies the level in the quantizer matrix that should be used for luma plane decoding.
 * @qm_u: specifies the level in the quantizer matrix that should be used for chroma U plane decoding.
 * @qm_v: specifies the level in the quantizer matrix that should be used for chroma V plane decoding.
 * @delta_q_present: specifies whether quantizer index delta values are present in the bitstream.
 * @delta_q_res: specifies the left shift which should be applied to decoded quantizer index
 *   delta values.
 * @delta_q_y_dc: indicates the Y DC quantizer relative to base_q_idx.
 * @delta_q_u_dc: indicates the U DC quantizer relative to base_q_idx.
 * @delta_q_u_ac: indicates the U AC quantizer relative to base_q_idx.
 * @delta_q_v_dc: indicates the V DC quantizer relative to base_q_idx.
 * @delta_q_v_ac: indicates the V AC quantizer relative to base_q_idx.
 */
struct _GstAV1QuantizationParams {
  guint8 base_q_idx;
  gboolean diff_uv_delta;
  gboolean using_qmatrix;
  guint8 qm_y;
  guint8 qm_u;
  guint8 qm_v;

  gboolean delta_q_present;
  guint8 delta_q_res;

  gint8 delta_q_y_dc; /* DeltaQYDc */
  gint8 delta_q_u_dc; /* DeltaQUDc */
  gint8 delta_q_u_ac; /* DeltaQUAc */
  gint8 delta_q_v_dc; /* DeltaQVDc */
  gint8 delta_q_v_ac; /* DeltaQVAc */
};

/**
 * GstAV1SegmenationParams:
 * @segmentation_enabled: equal to 1 indicates that this frame makes use of the segmentation
 *   tool; @segmentation_enabled equal to 0 indicates that the frame does not use segmentation.
 * @segmentation_update_map: equal to 1 indicates that the segmentation map are updated during
 *   the decoding of this frame. @segmentation_update_map equal to 0 means that the segmentation
 *   map from the previous frame is used.
 * @segmentation_temporal_update: equal to 1 indicates that the updates to the segmentation map
 *   are coded relative to the existing segmentation map. @segmentation_temporal_update equal to
 *   0 indicates that the new segmentation map is coded without reference to the existing
 *   segmentation map.
 * @segmentation_update_data: equal to 1 indicates that new parameters are about to be
 *   specified for each segment. @segmentation_update_data equal to 0 indicates that the
 *   segmentation parameters should keep their existing values.
 * @feature_enabled: set to 1 when the feature of segmentation is enabled.
 * @feature_data: the value of according segmentation feature.
 * @seg_id_pre_skip: equal to 1 indicates that the segment id will be read before the skip
 *   syntax element. @seg_id_pre_skip equal to 0 indicates that the skip syntax element will be
 *   read first.
 * @last_active_seg_id: indicates the highest numbered segment id that has some enabled feature.
 *   This is used when decoding the segment id to only decode choices corresponding to used
 *   segments.
 */
struct _GstAV1SegmenationParams {
  gboolean segmentation_enabled;
  guint8 segmentation_update_map;
  guint8 segmentation_temporal_update;
  guint8 segmentation_update_data;

  gint8 feature_enabled[GST_AV1_MAX_SEGMENTS][GST_AV1_SEG_LVL_MAX]; /* FeatureEnabled */
  gint16 feature_data[GST_AV1_MAX_SEGMENTS][GST_AV1_SEG_LVL_MAX]; /* FeatureData */
  guint8 seg_id_pre_skip; /* SegIdPreSkip */
  guint8 last_active_seg_id; /* LastActiveSegId */
};

/**
 * GstAV1TileInfo:
 * @uniform_tile_spacing_flag: equal to 1 means that the tiles are uniformly spaced across the
 *   frame. (In other words, all tiles are the same size except for the ones at the right and
 *   bottom edge which can be smaller.) @uniform_tile_spacing_flag equal to 0 means that the
 *   tile sizes are coded.
 * @increment_tile_rows_log2: is used to compute @tile_rows_log2.
 * @width_in_sbs_minus_1: specifies the width of a tile minus 1 in units of superblocks.
 * @height_in_sbs_minus_1: specifies the height of a tile minus 1 in units of superblocks.
 * @tile_size_bytes_minus_1: is used to compute @tile_size_bytes
 * @context_update_tile_id: specifies which tile to use for the CDF update.
 * @mi_col_starts: is an array specifying the start column (in units of 4x4 luma samples) for
 *   each tile across the image.
 * @mi_row_starts: is an array specifying the start row (in units of 4x4 luma samples) for
 *   each tile down the image.
 * @tile_cols_log2: specifies the base 2 logarithm of the desired number of tiles across the frame.
 * @tile_cols: specifies the number of tiles across the frame. It is a requirement of bitstream
 *   conformance that @tile_cols is less than or equal to GST_AV1_MAX_TILE_COLS.
 * @tile_rows_log2: specifies the base 2 logarithm of the desired number of tiles down the frame.
 * @tile_rows: specifies the number of tiles down the frame. It is a requirement of bitstream
 *   conformance that @tile_rows is less than or equal to GST_AV1_MAX_TILE_ROWS.
 * @tile_size_bytes: specifies the number of bytes needed to code each tile size.
 */
struct _GstAV1TileInfo {
  guint8 uniform_tile_spacing_flag;
  gint increment_tile_rows_log2;
  gint width_in_sbs_minus_1[GST_AV1_MAX_TILE_COLS];
  gint height_in_sbs_minus_1[GST_AV1_MAX_TILE_ROWS];
  gint tile_size_bytes_minus_1;
  guint8 context_update_tile_id;

  guint32 mi_col_starts[GST_AV1_MAX_TILE_COLS + 1]; /* MiColStarts */
  guint32 mi_row_starts[GST_AV1_MAX_TILE_ROWS + 1]; /* MiRowStarts */
  guint8 tile_cols_log2; /* TileColsLog2 */
  guint8 tile_cols; /* TileCols */
  guint8 tile_rows_log2; /* TileRowsLog2 */
  guint8 tile_rows; /* TileRows */
  guint8 tile_size_bytes; /* TileSizeBytes */
};

/**
 * GstAV1CDEFParams:
 * @cdef_damping: controls the amount of damping in the deringing filter.
 * @cdef_bits: specifies the number of bits needed to specify which CDEF filter to apply.
 * @cdef_y_pri_strength: specify the strength of the primary filter (Y component)
 * @cdef_uv_pri_strength: specify the strength of the primary filter (UV components).
 * @cdef_y_sec_strength: specify the strength of the secondary filter (Y component).
 * @cdef_uv_sec_strength: specify the strength of the secondary filter (UV components).
 *
 * Parameters of Constrained Directional Enhancement Filter (CDEF).
 */
struct _GstAV1CDEFParams {
  guint8 cdef_damping;
  guint8 cdef_bits;
  guint8 cdef_y_pri_strength[GST_AV1_CDEF_MAX];
  guint8 cdef_y_sec_strength[GST_AV1_CDEF_MAX];
  guint8 cdef_uv_pri_strength[GST_AV1_CDEF_MAX];
  guint8 cdef_uv_sec_strength[GST_AV1_CDEF_MAX];
};

/**
 * GstAV1LoopRestorationParams:
 * @lr_unit_shift: specifies if the luma restoration size should be halved.
 * @lr_uv_shift: is only present for 4:2:0 formats and specifies if the chroma size should be
 *   half the luma size.
 * @frame_restoration_type: specifies the type of restoration used for each plane.
 * @loop_restoration_size: specifies the size of loop restoration units in units of samples in
 *   the current plane.
 * @uses_lr: indicates if any plane uses loop restoration.
 */
struct _GstAV1LoopRestorationParams {
  guint8 lr_unit_shift;
  gboolean lr_uv_shift;

  GstAV1FrameRestorationType frame_restoration_type[GST_AV1_MAX_NUM_PLANES]; /* FrameRestorationType */
  guint32 loop_restoration_size[GST_AV1_MAX_NUM_PLANES]; /* LoopRestorationSize */
  guint8 uses_lr; /* UsesLr */
};

/**
 * GstAV1GlobalMotionParams:
 * @is_global: specifies whether global motion parameters are present for a particular
 *   reference frame.
 * @is_rot_zoom: specifies whether a particular reference frame uses rotation and zoom
 *   global motion.
 * @is_translation: specifies whether a particular reference frame uses translation
 *   global motion.
 * @gm_params: is set equal to SavedGmParams[ frame_to_show_map_idx ][ ref ][ j ] for
 *   ref = LAST_FRAME..ALTREF_FRAME, for j = 0..5.
 * @gm_type: specifying the type of global motion.
 * @invalid: whether this global motion parameters is invalid. (Since: 1.20)
 */
/**
 * _GstAV1GlobalMotionParams.invalid:
 *
 * whether this global motion parameters is invalid.
 *
 * Since: 1.20
 */
struct _GstAV1GlobalMotionParams {
  gboolean is_global[GST_AV1_NUM_REF_FRAMES];
  gboolean is_rot_zoom[GST_AV1_NUM_REF_FRAMES];
  gboolean is_translation[GST_AV1_NUM_REF_FRAMES];
  gint32 gm_params[GST_AV1_NUM_REF_FRAMES][6];

  GstAV1WarpModelType gm_type[GST_AV1_NUM_REF_FRAMES]; /* GmType */
  gboolean invalid[GST_AV1_NUM_REF_FRAMES];
};

/**
 * GstAV1FilmGrainParams:
 * @apply_grain: equal to 1 specifies that film grain should be added to this frame.
 *   apply_grain equal to 0 specifies that film grain should not be added.
 * @grain_seed: specifies the starting value for the pseudo-random numbers used during film
 *   grain synthesis.
 * @update_grain: equal to 1 means that a new set of parameters should be sent. @update_grain
 *   equal to 0 means that the previous set of parameters should be used.
 * @film_grain_params_ref_idx: indicates which reference frame contains the film grain
 *   parameters to be used for this frame.
 * @num_y_points: specifies the number of points for the piece-wise linear scaling function
 *   of the luma component. It is a requirement of bitstream conformance that @num_y_points is
 *   less than or equal to 14.
 * @point_y_value: represents the x (luma value) coordinate for the i-th point of the
 *   piecewise linear scaling function for luma component. The values are signaled on the
 *   scale of 0..255. (In case of 10 bit video, these values correspond to luma values divided
 *   by 4. In case of 12 bit video, these values correspond to luma values divided by 16.)
 *   If i is greater than 0, it is a r equirement of bitstream conformance that
 *   @point_y_value[ i ] is greater than @point_y_value[ i - 1 ] (this ensures the x coordinates
 *   are specified in increasing order).
 * @point_y_scaling: represents the scaling (output) value for the i-th point of the
 *   piecewise linear scaling function for luma component.
 * @chroma_scaling_from_luma: specifies that the chroma scaling is inferred from the luma scaling.
 * @num_cb_points: specifies the number of points for the piece-wise linear scaling function
 *   of the cb component. It is a requirement of bitstream conformance that @num_cb_points is
 *   less than or equal to 10.
 * @point_cb_value: represents the x coordinate for the i-th point of the piece-wise linear
 *   scaling function for cb component. The values are signaled on the scale of 0..255. If i
 *   is greater than 0, it is a requirement of bitstream conformance that point_cb_value[ i ]
 *   is greater than point_cb_value[ i - 1 ].
 * @point_cb_scaling: represents the scaling (output) value for the i-th point of the
 *   piecewise linear scaling function for cb component.
 * @num_cr_points: specifies represents the number of points for the piece-wise linear scaling
 *   function of the cr component. It is a requirement of bitstream conformance that
 *   num_cr_points is less than or equal to 10. If subsampling_x is equal to 1 and
 *   @subsampling_y is equal to 1 and num_cb_points is equal to 0, it is a requirement of
 *   bitstream conformance that num_cr_points is equal to 0. If @subsampling_x is equal to 1
 *   and @subsampling_y is equal to 1 and @num_cb_points is not equal to 0, it is a requirement
 *   of bitstream conformance that @num_cr_points is not equal to 0.
 * @point_cr_value: represents the x coordinate for the i-th point of the piece-wise linear
 *   scaling function for cr component. The values are signaled on the scale of 0..255. If i
 *   is greater than 0, it is a requirement of bitstream conformance that @point_cr_value[ i ]
 *   is greater than @point_cr_value[ i - 1 ].
 * @point_cr_scaling: represents the scaling (output) value for the i-th point of the
 *   piecewise linear scaling function for cr component.
 * @grain_scaling_minus_8: represents the shift - 8 applied to the values of the chroma
 *   component. The @grain_scaling_minus_8 can take values of 0..3 and determines the range and
 *   quantization step of the standard deviation of film grain.
 * @ar_coeff_lag: specifies the number of auto-regressive coefficients for luma and chroma.
 * @ar_coeffs_y_plus_128: specifies auto-regressive coefficients used for the Y plane.
 * @ar_coeffs_cb_plus_128: specifies auto-regressive coefficients used for the U plane.
 * @ar_coeffs_cr_plus_128: specifies auto-regressive coefficients used for the V plane.
 * @ar_coeff_shift_minus_6: specifies the range of the auto-regressive coefficients. Values
 *   of 0, 1, 2, and 3 correspond to the ranges for auto-regressive coefficients of [-2, 2),
 *   [-1, 1), [-0.5, 0.5) and [-0.25, 0.25) respectively.
 * @grain_scale_shift: specifies how much the Gaussian random numbers should be scaled down
 *   during the grain synthesis process.
 * @cb_mult: represents a multiplier for the cb component used in derivation of the input
 *   index to the cb component scaling function.
 * @cb_luma_mult: represents a multiplier for the average luma component used in derivation
 *   of the input index to the cb component scaling function.
 * @cb_offset: represents an offset used in derivation of the input index to the cb component
 *   scaling function.
 * @cr_mult: represents a multiplier for the cr component used in derivation of the input
 *   index to the cr component scaling function.
 * @cr_luma_mult: represents a multiplier for the average luma component used in derivation
 *   of the input index to the cr component scaling function.
 * @cr_offset: represents an offset used in derivation of the input index to the cr component
 *   scaling function.
 * @overlap_flag: equal to 1 indicates that the overlap between film grain blocks shall be
 *   applied. overlap_flag equal to 0 indicates that the overlap between film grain blocks
 *   shall not be applied.
 * @clip_to_restricted_range: equal to 1 indicates that clipping to the restricted (studio)
 *   range shall be applied to the sample values after adding the film grain (see the
 *   semantics for color_range for an explanation of studio swing). clip_to_restricted_range
 *   equal to 0 indicates that clipping to the full range shall be applied to the sample
 *   values after adding the film grain.
 */
struct _GstAV1FilmGrainParams {
  gboolean apply_grain;
  guint16 grain_seed;
  gboolean update_grain;
  guint8 film_grain_params_ref_idx;
  guint8 num_y_points;
  guint8 point_y_value[GST_AV1_MAX_NUM_Y_POINTS];
  guint8 point_y_scaling[GST_AV1_MAX_NUM_Y_POINTS];
  guint8 chroma_scaling_from_luma;
  guint8 num_cb_points;
  guint8 point_cb_value[GST_AV1_MAX_NUM_CB_POINTS];
  guint8 point_cb_scaling[GST_AV1_MAX_NUM_CB_POINTS];
  guint8 num_cr_points;
  guint8 point_cr_value[GST_AV1_MAX_NUM_CR_POINTS];
  guint8 point_cr_scaling[GST_AV1_MAX_NUM_CR_POINTS];
  guint8 grain_scaling_minus_8;
  guint8 ar_coeff_lag;
  guint8 ar_coeffs_y_plus_128[GST_AV1_MAX_NUM_POS_LUMA];
  guint8 ar_coeffs_cb_plus_128[GST_AV1_MAX_NUM_POS_LUMA];
  guint8 ar_coeffs_cr_plus_128[GST_AV1_MAX_NUM_POS_LUMA];
  guint8 ar_coeff_shift_minus_6;
  guint8 grain_scale_shift;
  guint8 cb_mult;
  guint8 cb_luma_mult;
  guint16 cb_offset;
  guint8 cr_mult;
  guint8 cr_luma_mult;
  guint16 cr_offset;
  gboolean overlap_flag;
  gboolean clip_to_restricted_range;
};

/**
 * GstAV1FrameHeaderOBU:
 * @show_existing_frame: equal to 1, indicates the frame indexed by @frame_to_show_map_idx is
 *   to be output; @show_existing_frame equal to 0 indicates that further processing is required.
 *   If @obu_type is equal to %GST_AV1_OBU_FRAME, it is a requirement of bitstream conformance that
 *   @show_existing_frame is equal to 0.
 * @frame_to_show_map_idx: specifies the frame to be output. It is only available if
 *   @show_existing_frame is 1.
 * @frame_presentation_time: specifies the presentation time of the frame in clock ticks
 *   DispCT counted from the removal time of the last frame with frame_type equal to KEY_FRAME
 *   for the operating point that is being decoded. The syntax element is signaled as a fixed
 *   length unsigned integer with a length in bits given by
 *   @frame_presentation_time_length_minus_1 + 1. The @frame_presentation_time is the remainder
 *   of a modulo 1 << (@frame_presentation_time_length_minus_1 + 1) counter.
 * @tu_presentation_delay: is a syntax element used by the decoder model. It does not affect
 *   the decoding process.
 * @display_frame_id: provides the frame id number for the frame to output. It is a requirement
 *   of bitstream conformance that whenever @display_frame_id is read, the value matches
 *   @ref_frame_id[ @frame_to_show_map_idx ] (the value of @current_frame_id at the time that the
 *   frame indexed by @frame_to_show_map_idx was stored), and that
 *   @ref_valid[ @frame_to_show_map_idx ] is equal to 1. It is a requirement of bitstream
 *   conformance that the number of bits needed to read @display_frame_id does not exceed 16.
 *   This is equivalent to the constraint that idLen <= 16
 * @frame_type: specifies the type of the frame.
 * @show_frame: equal to 1 specifies that this frame should be immediately output once decoded.
 *   show_frame equal to 0 specifies that this frame should not be immediately output. (It may
 *   be output later if a later uncompressed header uses @show_existing_frame equal to 1).
 * @showable_frame: equal to 1 specifies that the frame may be output using the
 *   @show_existing_frame mechanism. showable_frame equal to 0 specifies that this frame will
 *   not be output using the @show_existing_frame mechanism. It is a requirement of bitstream
 *   conformance that when @show_existing_frame is used to show a previous frame, that the
 *   value of @showable_frame for the previous frame was equal to 1. It is a requirement of
 *   bitstream conformance that a particular showable frame is output via the
 *   @show_existing_frame mechanism at most once.
 * @error_resilient_mode: equal to 1 indicates that error resilient mode is enabled;
 *   @error_resilient_mode equal to 0 indicates that error resilient mode is disabled.
 * @disable_cdf_update: specifies whether the CDF update in the symbol decoding process should
 *   be disabled.
 * @allow_screen_content_tools: equal to 1 indicates that intra blocks may use palette encoding;
 *   @allow_screen_content_tools equal to 0 indicates that palette encoding is never used.
 * @force_integer_mv: equal to 1 specifies that motion vectors will always be integers.
 *   @force_integer_mv equal to 0 specifies that motion vectors can contain fractional bits.
 * @current_frame_id: specifies the frame id number for the current frame. Frame id numbers
 *   are additional information that do not affect the decoding process, but provide decoders
 *   with a way of detecting missing reference frames so that appropriate action can be taken.
 * @frame_size_override_flag: equal to 0 specifies that the frame size is equal to the size in
 *   the sequence header. @frame_size_override_flag equal to 1 specifies that the frame size
 *   will either be specified as the size of one of the reference frames, or computed from the
 *   @frame_width_minus_1 and @frame_height_minus_1 syntax elements.
 * @order_hint: is used to compute order_hint.
 * @primary_ref_frame: specifies which reference frame contains the CDF values and other state
 *   that should be loaded at the start of the frame.
 * @buffer_removal_time_present_flag: equal to 1 specifies that @buffer_removal_time is present
 *   in the bitstream. @buffer_removal_time_present_flag equal to 0 specifies that
 *   @buffer_removal_time is not present in the bitstream.
 * @buffer_removal_time: specifies the frame removal time in units of DecCT clock ticks
 *   counted from the removal time of the last frame with frame_type equal to KEY_FRAME for
 *   operating point opNum. @buffer_removal_time is signaled as a fixed length unsigned integer
 *   with a length in bits given by @buffer_removal_time_length_minus_1 + 1. @buffer_removal_time
 *   is the remainder of a modulo 1 << ( @buffer_removal_time_length_minus_1 + 1 ) counter.
 * @refresh_frame_flags: contains a bitmask that specifies which reference frame slots will be
 *   updated with the current frame after it is decoded. If @frame_type is equal to
 *   %GST_AV1_INTRA_ONLY_FRAME, it is a requirement of bitstream conformance that
 *   @refresh_frame_flags is not equal to 0xff.
 * @ref_order_hint: specifies the expected output order hint for each reference buffer.
 * @allow_intrabc: equal to 1 indicates that intra block copy may be used in this frame.
 *   allow_intrabc equal to 0 indicates that intra block copy is not allowed in this frame.
 * @frame_refs_short_signaling: equal to 1 indicates that only two reference frames are
 *   explicitly signaled. frame_refs_short_signaling equal to 0 indicates that all reference
 *   frames are explicitly signaled.
 * @last_frame_idx: specifies the reference frame to use for LAST_FRAME.
 * @gold_frame_idx: specifies the reference frame to use for GOLDEN_FRAME.
 * @ref_frame_idx[i]: specifies which reference frames are used by inter frames.
 * @delta_frame_id_minus_1 is used to calculate @delta_frame_id.
 * @allow_high_precision_mv: equal to 0 specifies that motion vectors are specified to quarter
 *   pel precision; @allow_high_precision_mv equal to 1 specifies that motion vectors are
 *   specified to eighth pel precision.
 * @is_motion_mode_switchable: equal to 0 specifies that only the SIMPLE motion mode will be used.
 * @use_ref_frame_mvs: equal to 1 specifies that motion vector information from a previous
 *   frame can be used when decoding the current frame. @use_ref_frame_mvs equal to 0 specifies
 *   that this information will not be used.
 * @disable_frame_end_update_cdf: equal to 1 indicates that the end of frame CDF update is
 *   disabled; @disable_frame_end_update_cdf equal to 0 indicates that the end of frame CDF
 *   update is enabled.
 * @allow_warped_motion: equal to 1 indicates that the syntax element @motion_mode may be
 *   present. @allow_warped_motion equal to 0 indicates that the syntax element motion_mode
 *   will not be present (this means that LOCALWARP cannot be signaled if @allow_warped_motion
 *   is equal to 0).
 * @reduced_tx_set: equal to 1 specifies that the frame is restricted to a reduced subset of
 *   the full set of transform types.
 * @render_and_frame_size_different: equal to 0 means that the render width and height are
 *   inferred from the frame width and height. @render_and_frame_size_different equal to 1
 *   means that the render width and height are explicitly coded in the bitstream.
 * @use_superres: equal to 0 indicates that no upscaling is needed. @use_superres equal to 1
 *   indicates that upscaling is needed.
 * @is_filter_switchable: equal to 1 indicates that the filter selection is signaled at the
 *   block level; @is_filter_switchable equal to 0 indicates that the filter selection is
 *   signaled at the frame level.
 * @interpolation_filter: a #GstAV1InterpolationFilter that specifies the filter selection used
 *   for performing inter prediction.
 * @loop_filter_params: a #GstAV1LoopFilterParams holding the loop filter parameters.
 * @quantization_params: a #GstAV1QuantizationParams holding the quantization parameters.
 * @segmentation_params: a #GstAV1SegmenationParams holding the segementation parameters.
 * @tile_info: a #GstAV1TileInfo holding the tile info.
 * @cdef_params: a #GstAV1CDEFParams holding the CDEF paramters.
 * @loop_restoration_params: a #GstAV1LoopRestorationParams holding the loop restoration parameters.
 * @tx_mode_select: is used to compute TxMode.
 * @skip_mode_present: equal to 1 specifies that the syntax element @skip_mode will be coded
 *   in the bitstream. @skip_mode_present equal to 0 specifies that @skip_mode will not be used
 *   for this frame.
 * @reference_select: equal to 1 specifies that the mode info for inter blocks contains the
 *   syntax element comp_mode that indicates whether to use single or compound reference
 *   prediction. Reference_select equal to 0 specifies that all interblocks will use single
 *   prediction.
 * @global_motion_params: a #GstAV1GlobalMotionParams holding the global motion parameters.
 * @film_grain_params: a #GstAV1FilmGrainParams holding the Film Grain parameters.
 * @superres_denom: is the denominator of a fraction that specifies the ratio between the
 *   superblock width before and after upscaling.
 * @frame_is_intra: if equal to 0 indicating that this frame may use inter prediction.
 * @order_hints: specifies the expected output order for each reference frame.
 * @ref_frame_sign_bias: specifies the intended direction of the motion vector in time for
 *   each reference frame.
 * @coded_lossless: is a variable that is equal to 1 when all segments use lossless encoding.
 * @all_lossless: is a variable that is equal to 1 when @coded_lossless is equal to 1 and
 *   @frame_width is equal to @upscaled_width. This indicates that the frame is fully lossless
 *   at the upscaled resolution.
 * @lossless_array: whether the segmentation is lossless.
 * @seg_qm_Level: the segmentation's qm level.
 * @upscaled_width: the upscaled width.
 * @frame_width: the frame width.
 * @frame_height: the frame height.
 * @render_width: the frame width to be rendered.
 * @render_height: the frame height to be rendered.
 * @tx_mode: specifies how the transform size is determined.
 * @skip_mode_frame: specifies the frames to use for compound prediction when @skip_mode is 1.
 * @expected_frame_id: specifies the frame id for each frame used for reference. (Since: 1.24)
 * @ref_global_motion_params: specifies the global motion parameters of the reference. (Since: 1.24)
 */
struct _GstAV1FrameHeaderOBU {
  gboolean show_existing_frame;
  gint8 frame_to_show_map_idx;
  guint32 frame_presentation_time;
  guint32 tu_presentation_delay;
  guint32 display_frame_id;
  GstAV1FrameType frame_type;
  gboolean show_frame;
  gboolean showable_frame;
  gboolean error_resilient_mode;
  gboolean disable_cdf_update;
  guint8 allow_screen_content_tools;
  gboolean force_integer_mv;
  guint32 current_frame_id;
  gboolean frame_size_override_flag;
  guint32 order_hint;
  guint8 primary_ref_frame;
  gboolean buffer_removal_time_present_flag;
  guint32 buffer_removal_time[GST_AV1_MAX_OPERATING_POINTS];
  guint8 refresh_frame_flags;
  guint32 ref_order_hint[GST_AV1_NUM_REF_FRAMES];
  gboolean allow_intrabc;
  gboolean frame_refs_short_signaling;
  gint8 last_frame_idx;
  gint8 gold_frame_idx;
  gint8 ref_frame_idx[GST_AV1_REFS_PER_FRAME];
  gboolean allow_high_precision_mv;
  gboolean is_motion_mode_switchable;
  gboolean use_ref_frame_mvs;
  gboolean disable_frame_end_update_cdf;
  gboolean allow_warped_motion;
  gboolean reduced_tx_set;
  gboolean render_and_frame_size_different;
  gboolean use_superres;
  gboolean is_filter_switchable;
  GstAV1InterpolationFilter interpolation_filter;
  GstAV1LoopFilterParams loop_filter_params;
  GstAV1QuantizationParams quantization_params;
  GstAV1SegmenationParams segmentation_params;
  GstAV1TileInfo tile_info;
  GstAV1CDEFParams cdef_params;
  GstAV1LoopRestorationParams loop_restoration_params;
  gboolean tx_mode_select;
  gboolean skip_mode_present;
  gboolean reference_select;
  GstAV1GlobalMotionParams global_motion_params;
  GstAV1FilmGrainParams film_grain_params;

  /* Global vars set by frame header */
  guint32 superres_denom; /* SuperresDenom */
  guint8 frame_is_intra; /* FrameIsIntra */
  guint32 order_hints[GST_AV1_NUM_REF_FRAMES]; /* OrderHints */
  guint32 ref_frame_sign_bias[GST_AV1_NUM_REF_FRAMES]; /* RefFrameSignBias */

  guint8 coded_lossless; /* CodedLossless */
  guint8 all_lossless; /* AllLossless */
  guint8 lossless_array[GST_AV1_MAX_SEGMENTS]; /* LosslessArray */
  guint8 seg_qm_Level[3][GST_AV1_MAX_SEGMENTS]; /* SegQMLevel */

  guint32 upscaled_width; /* UpscaledWidth */
  guint32 frame_width; /* FrameWidth */
  guint32 frame_height; /* FrameHeight */
  guint32 render_width;  /* RenderWidth */
  guint32 render_height; /* RenderHeight */

  GstAV1TXModes tx_mode; /* TxMode */

  guint8 skip_mode_frame[2]; /* SkipModeFrame */

  /**
   * _GstAV1FrameHeaderOBU.expected_frame_id:
   *
   * Specifies the frames to use for compound prediction.
   *
   * Since: 1.24
   */
  gint32 expected_frame_id[GST_AV1_REFS_PER_FRAME];

  /**
   * _GstAV1FrameHeaderOBU.ref_global_motion_params:
   *
   * Specifies the global motion parameters of the reference.
   *
   * Since: 1.24
   */
  GstAV1GlobalMotionParams ref_global_motion_params;
};

/**
 * GstAV1ReferenceFrameInfoEntry:
 *
 */
struct _GstAV1ReferenceFrameInfoEntry {
  gboolean ref_valid;             /* RefValid */
  guint32 ref_frame_id;           /* RefFrameId */
  guint32 ref_upscaled_width;     /* RefUpscaledWidth */
  guint32 ref_frame_width;        /* RefFrameWidth */
  guint32 ref_frame_height;       /* RefFrameHeight */
  guint32 ref_render_width;       /* RefRenderWidth */
  guint32 ref_render_height;      /* RefRenderHeight */
  guint32 ref_mi_cols;            /* RefMiCols */
  guint32 ref_mi_rows;            /* RefMiRows */
  GstAV1FrameType ref_frame_type; /* RefFrameType */
  guint8 ref_subsampling_x;       /* RefSubsamplingX */
  guint8 ref_subsampling_y;       /* RefSubsamplingY */
  guint8 ref_bit_depth;           /* RefBitDepth */
  guint32 ref_order_hint;         /* RefOrderHint */
  GstAV1SegmenationParams ref_segmentation_params;
  GstAV1GlobalMotionParams ref_global_motion_params;
  GstAV1LoopFilterParams ref_lf_params;
  GstAV1FilmGrainParams ref_film_grain_params;
  GstAV1TileInfo ref_tile_info;
};

/**
 * GstAV1ReferenceFrameInfo:
 *
 * All the info related to a reference frames.
 */
struct _GstAV1ReferenceFrameInfo {
  GstAV1ReferenceFrameInfoEntry entry[GST_AV1_NUM_REF_FRAMES];
};

/**
 * GstAV1TileListOBUEntry:
 *
 */
struct _GstAV1TileListOBUEntry {
  gint8 anchor_frame_idx;
  guint8 anchor_tile_row;
  guint8 anchor_tile_col;
  guint16 tile_data_size_minus_1;
  /* Just refer to obu's data, invalid after OBU data released */
  guint8 *coded_tile_data;
};

/**
 * GstAV1TileListOBU:
 * @output_frame_width_in_tiles_minus_1: plus one is the width of the output frame, in tile units.
 * @output_frame_height_in_tiles_minus_1: plus one is the height of the output frame, in tile units.
 * @tile_count_minus_1: plus one is the number of @tile_list_entry in the list. It is a requirement
 *   of bitstream conformance that @tile_count_minus_1 is less than or equal to 511.
 * @anchor_frame_idx: is the index into an array AnchorFrames of the frames that the tile uses
 *   for prediction. The AnchorFrames array is provided by external means and may change for
 *   each tile list OBU. The process for creating the AnchorFrames array is outside of the
 *   scope of this specification. It is a requirement of bitstream conformance that
 *   @anchor_frame_idx is less than or equal to 127.
 * @anchor_tile_row: the row coordinate of the tile in the frame that it belongs, in tile
 *   units. It is a requirement of bitstream conformance that @anchor_tile_row is less than @tile_rows.
 * @anchor_tile_col: is the column coordinate of the tile in the frame that it belongs, in tile
 *   units. It is a requirement of bitstream conformance that @anchor_tile_col is less than @tile_cols.
 * @tile_data_size_minus_1: plus one is the size of the coded tile data, @coded_tile_data, in bytes.
 * @coded_tile_data: are the @tile_data_size_minus_1 + 1 bytes of the coded tile.
 */
struct _GstAV1TileListOBU {
  guint8 output_frame_width_in_tiles_minus_1;
  guint8 output_frame_height_in_tiles_minus_1;
  guint16 tile_count_minus_1;
  GstAV1TileListOBUEntry entry[GST_AV1_MAX_TILE_COUNT];
};

/**
 * GstAV1TileGroupOBUEntry:
 *
 */
struct _GstAV1TileGroupOBUEntry {
  guint32 tile_offset; /* Tile data offset from the OBU data. */
  guint32 tile_size;   /* Data size of this tile */
  guint32 tile_row;    /* tileRow */
  guint32 tile_col;    /* tileCol */
  /* global varialbes */
  guint32 mi_row_start; /* MiRowStart */
  guint32 mi_row_end;   /* MiRowEnd */
  guint32 mi_col_start; /* MiColStart */
  guint32 mi_col_end;   /* MiColEnd */
};

/**
 * GstAV1TileGroupOBU:
 * @tile_start_and_end_present_flag: specifies whether @tg_start and @tg_end are present
 *   in the bitstream. If @tg_start and @tg_end are not present in the bitstream, this
 *   tile group covers the entire frame. If @obu_type is equal to %GST_AV1_OBU_FRAME, it is a
 *   requirement of bitstream conformance that the value of @tile_start_and_end_present_flag
 *   is equal to 0.
 * @tg_start: specifies the zero-based index of the first tile in the current tile group.
 *   It is a requirement of bitstream conformance that the value of @tg_start is equal to
 *   the value of TileNum at the point that tile_group_obu is invoked.
 * @tg_end: specifies the zero-based index of the last tile in the current tile group.
 *   It is a requirement of bitstream conformance that the value of tg_end is greater
 *   than or equal to tg_start. It is a requirement of bitstream conformance that the
 *   value of tg_end for the last tile group in each frame is equal to num_tiles-1.
 * @tile_offset: Offset from the OBU data, the real data start of this tile.
 * @tg_size: Data size of this tile.
 * @tile_row: Tile index in row.
 * @tile_col: Tile index in column.
 * @mi_row_start: start position in mi rows
 * @mi_row_end: end position in mi rows
 * @mi_col_start: start position in mi cols
 * @mi_col_end: end position in mi cols
 * @num_tiles: specifies the total number of tiles in the frame.
 */
struct _GstAV1TileGroupOBU {
  gboolean tile_start_and_end_present_flag;
  guint8 tg_start;
  guint8 tg_end;
  GstAV1TileGroupOBUEntry entry[GST_AV1_MAX_TILE_COUNT];

  guint32 num_tiles; /* NumTiles */
};

/**
 * GstAV1FrameOBU:
 * @frame_header: a #GstAV1FrameHeaderOBU holding frame_header data.
 * @tile_group: a #GstAV1TileGroupOBU holding tile_group data.
 */
struct _GstAV1FrameOBU {
  GstAV1TileGroupOBU tile_group;
  GstAV1FrameHeaderOBU frame_header;
};

/**
 * GstAV1ParserState:
 *
 */
struct _GstAV1ParserState {
  guint32 operating_point;     /* Set by choose_operating_point() */
  guint8 seen_frame_header;    /* SeenFrameHeader */
  guint32 operating_point_idc; /* OperatingPointIdc */
  gboolean sequence_changed;   /* Received a new sequence */
  gboolean begin_first_frame;  /* already find the first frame */

  /* frame */
  guint32 upscaled_width;            /* UpscaledWidth */
  guint32 frame_width;               /* FrameWidth */
  guint32 frame_height;              /* FrameHeight */
  guint32 mi_cols;                   /* MiCols */
  guint32 mi_rows;                   /* MiRows */
  guint32 render_width;              /* RenderWidth */
  guint32 render_height;             /* RenderHeight */
  guint32 prev_frame_id;             /* PrevFrameID */
  guint32 current_frame_id;          /* the current frame ID */
  GstAV1ReferenceFrameInfo ref_info; /* RefInfo */

  guint32 mi_col_starts[GST_AV1_MAX_TILE_COLS + 1]; /* MiColStarts */
  guint32 mi_row_starts[GST_AV1_MAX_TILE_ROWS + 1]; /* MiRowStarts */
  guint8 tile_cols_log2;                            /* TileColsLog2 */
  guint8 tile_cols;                                 /* TileCols */
  guint8 tile_rows_log2;                            /* TileRowsLog2 */
  guint8 tile_rows;                                 /* TileRows */
  guint8 tile_size_bytes;                           /* TileSizeBytes */
};

/**
 * GstAV1Parser:
 *
 * #GstAV1Parser opaque structure
 *
 * Instantiante it with gst_av1_parser_new() and destroy it with
 * gst_av1_parser_free()
 */
struct _GstAV1Parser
{
  /*< private >*/
  GstAV1ParserState state;

  gboolean annex_b;
  guint32 temporal_unit_size;
  /* consumed of this temporal unit */
  guint32 temporal_unit_consumed;
  guint32 frame_unit_size;
  /* consumed of this frame unit */
  guint32 frame_unit_consumed;

  GstAV1SequenceHeaderOBU *seq_header;
};

GST_CODEC_PARSERS_API
void
gst_av1_parser_reset (GstAV1Parser * parser, gboolean annex_b);

GST_CODEC_PARSERS_API
void
gst_av1_parser_reset_annex_b (GstAV1Parser * parser);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_identify_one_obu (GstAV1Parser * parser, const guint8 * data,
    guint32 size, GstAV1OBU * obu, guint32 * consumed);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_sequence_header_obu (GstAV1Parser * parser,
    GstAV1OBU * obu, GstAV1SequenceHeaderOBU * seq_header);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_temporal_delimiter_obu (GstAV1Parser * parser,
    GstAV1OBU * obu);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_metadata_obu (GstAV1Parser * parser, GstAV1OBU * obu,
    GstAV1MetadataOBU * metadata);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_tile_list_obu (GstAV1Parser * parser, GstAV1OBU * obu,
    GstAV1TileListOBU * tile_list);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_tile_group_obu (GstAV1Parser * parser, GstAV1OBU * obu,
    GstAV1TileGroupOBU * tile_group);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_frame_header_obu (GstAV1Parser * parser, GstAV1OBU * obu,
    GstAV1FrameHeaderOBU * frame_header);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_parse_frame_obu (GstAV1Parser * parser, GstAV1OBU * obu,
    GstAV1FrameOBU * frame);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_reference_frame_update (GstAV1Parser * parser,
    GstAV1FrameHeaderOBU * frame_header);

GST_CODEC_PARSERS_API
GstAV1ParserResult
gst_av1_parser_set_operating_point (GstAV1Parser * parser,
    gint32 operating_point);

GST_CODEC_PARSERS_API
GstAV1Parser * gst_av1_parser_new (void);

GST_CODEC_PARSERS_API
void gst_av1_parser_free (GstAV1Parser * parser);

G_END_DECLS

#endif /* __GST_AV1_PARSER_H__ */