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/*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file
* AV1 common definitions
*/
#ifndef AVCODEC_AV1_H
#define AVCODEC_AV1_H
// OBU types (section 6.2.2).
typedef enum {
// 0 reserved.
AV1_OBU_SEQUENCE_HEADER = 1,
AV1_OBU_TEMPORAL_DELIMITER = 2,
AV1_OBU_FRAME_HEADER = 3,
AV1_OBU_TILE_GROUP = 4,
AV1_OBU_METADATA = 5,
AV1_OBU_FRAME = 6,
AV1_OBU_REDUNDANT_FRAME_HEADER = 7,
AV1_OBU_TILE_LIST = 8,
// 9-14 reserved.
AV1_OBU_PADDING = 15,
} AV1_OBU_Type;
// Metadata types (section 6.7.1).
enum {
AV1_METADATA_TYPE_HDR_CLL = 1,
AV1_METADATA_TYPE_HDR_MDCV = 2,
AV1_METADATA_TYPE_SCALABILITY = 3,
AV1_METADATA_TYPE_ITUT_T35 = 4,
AV1_METADATA_TYPE_TIMECODE = 5,
};
// Frame types (section 6.8.2).
enum {
AV1_FRAME_KEY = 0,
AV1_FRAME_INTER = 1,
AV1_FRAME_INTRA_ONLY = 2,
AV1_FRAME_SWITCH = 3,
};
// Reference frames (section 6.10.24).
enum {
AV1_REF_FRAME_INTRA = 0,
AV1_REF_FRAME_LAST = 1,
AV1_REF_FRAME_LAST2 = 2,
AV1_REF_FRAME_LAST3 = 3,
AV1_REF_FRAME_GOLDEN = 4,
AV1_REF_FRAME_BWDREF = 5,
AV1_REF_FRAME_ALTREF2 = 6,
AV1_REF_FRAME_ALTREF = 7,
};
// Constants (section 3).
enum {
AV1_MAX_OPERATING_POINTS = 32,
AV1_MAX_SB_SIZE = 128,
AV1_MI_SIZE = 4,
AV1_MAX_TILE_WIDTH = 4096,
AV1_MAX_TILE_AREA = 4096 * 2304,
AV1_MAX_TILE_ROWS = 64,
AV1_MAX_TILE_COLS = 64,
AV1_NUM_REF_FRAMES = 8,
AV1_REFS_PER_FRAME = 7,
AV1_TOTAL_REFS_PER_FRAME = 8,
AV1_PRIMARY_REF_NONE = 7,
AV1_MAX_SEGMENTS = 8,
AV1_SEG_LVL_MAX = 8,
AV1_SEG_LVL_ALT_Q = 0,
AV1_SEG_LVL_ALT_LF_Y_V = 1,
AV1_SEG_LVL_REF_FRAME = 5,
AV1_SEG_LVL_SKIP = 6,
AV1_SEG_LVL_GLOBAL_MV = 7,
AV1_SELECT_SCREEN_CONTENT_TOOLS = 2,
AV1_SELECT_INTEGER_MV = 2,
AV1_SUPERRES_NUM = 8,
AV1_SUPERRES_DENOM_MIN = 9,
AV1_INTERPOLATION_FILTER_SWITCHABLE = 4,
AV1_GM_ABS_ALPHA_BITS = 12,
AV1_GM_ALPHA_PREC_BITS = 15,
AV1_GM_ABS_TRANS_ONLY_BITS = 9,
AV1_GM_TRANS_ONLY_PREC_BITS = 3,
AV1_GM_ABS_TRANS_BITS = 12,
AV1_GM_TRANS_PREC_BITS = 6,
AV1_WARPEDMODEL_PREC_BITS = 16,
AV1_WARP_MODEL_IDENTITY = 0,
AV1_WARP_MODEL_TRANSLATION = 1,
AV1_WARP_MODEL_ROTZOOM = 2,
AV1_WARP_MODEL_AFFINE = 3,
AV1_WARP_PARAM_REDUCE_BITS = 6,
AV1_DIV_LUT_BITS = 8,
AV1_DIV_LUT_PREC_BITS = 14,
AV1_DIV_LUT_NUM = 257,
AV1_MAX_LOOP_FILTER = 63,
};
// The main colour configuration information uses the same ISO/IEC 23001-8
// (H.273) enums as FFmpeg does, so separate definitions are not required.
// Chroma sample position.
enum {
AV1_CSP_UNKNOWN = 0,
AV1_CSP_VERTICAL = 1, // -> AVCHROMA_LOC_LEFT.
AV1_CSP_COLOCATED = 2, // -> AVCHROMA_LOC_TOPLEFT.
};
// Scalability modes (section 6.7.5)
enum {
AV1_SCALABILITY_L1T2 = 0,
AV1_SCALABILITY_L1T3 = 1,
AV1_SCALABILITY_L2T1 = 2,
AV1_SCALABILITY_L2T2 = 3,
AV1_SCALABILITY_L2T3 = 4,
AV1_SCALABILITY_S2T1 = 5,
AV1_SCALABILITY_S2T2 = 6,
AV1_SCALABILITY_S2T3 = 7,
AV1_SCALABILITY_L2T1h = 8,
AV1_SCALABILITY_L2T2h = 9,
AV1_SCALABILITY_L2T3h = 10,
AV1_SCALABILITY_S2T1h = 11,
AV1_SCALABILITY_S2T2h = 12,
AV1_SCALABILITY_S2T3h = 13,
AV1_SCALABILITY_SS = 14,
AV1_SCALABILITY_L3T1 = 15,
AV1_SCALABILITY_L3T2 = 16,
AV1_SCALABILITY_L3T3 = 17,
AV1_SCALABILITY_S3T1 = 18,
AV1_SCALABILITY_S3T2 = 19,
AV1_SCALABILITY_S3T3 = 20,
AV1_SCALABILITY_L3T2_KEY = 21,
AV1_SCALABILITY_L3T3_KEY = 22,
AV1_SCALABILITY_L4T5_KEY = 23,
AV1_SCALABILITY_L4T7_KEY = 24,
AV1_SCALABILITY_L3T2_KEY_SHIFT = 25,
AV1_SCALABILITY_L3T3_KEY_SHIFT = 26,
AV1_SCALABILITY_L4T5_KEY_SHIFT = 27,
AV1_SCALABILITY_L4T7_KEY_SHIFT = 28,
};
// Frame Restoration types (section 6.10.15)
enum {
AV1_RESTORE_NONE = 0,
AV1_RESTORE_WIENER = 1,
AV1_RESTORE_SGRPROJ = 2,
AV1_RESTORE_SWITCHABLE = 3,
};
// TX mode (section 6.8.21)
enum {
AV1_ONLY_4X4 = 0,
AV1_TX_MODE_LARGEST = 1,
AV1_TX_MODE_SELECT = 2,
};
// Sequence Headers are actually unbounded because one can use
// an arbitrary number of leading zeroes when encoding via uvlc.
// The following estimate is based around using the lowest number
// of bits for uvlc encoding.
#define AV1_SANE_SEQUENCE_HEADER_MAX_BITS 3138
#endif /* AVCODEC_AV1_H */
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