Sunshine/third-party/cbs/include/cbs/av1.h

/*
 * 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,
};


// 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,
};

#endif /* AVCODEC_AV1_H */