/*
 * Copyright © 2018, VideoLAN and dav1d authors
 * Copyright © 2018, Two Orioles, LLC
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef DAV1D_SRC_LEVELS_H
#define DAV1D_SRC_LEVELS_H

#include <stdint.h>

#include "dav1d/headers.h"

enum ObuMetaType {
    OBU_META_HDR_CLL     = 1,
    OBU_META_HDR_MDCV    = 2,
    OBU_META_SCALABILITY = 3,
    OBU_META_ITUT_T35    = 4,
    OBU_META_TIMECODE    = 5,
};

enum TxfmSize {
    TX_4X4,
    TX_8X8,
    TX_16X16,
    TX_32X32,
    TX_64X64,
    N_TX_SIZES,
};

enum BlockLevel {
    BL_128X128,
    BL_64X64,
    BL_32X32,
    BL_16X16,
    BL_8X8,
    N_BL_LEVELS,
};

enum RectTxfmSize {
    RTX_4X8 = N_TX_SIZES,
    RTX_8X4,
    RTX_8X16,
    RTX_16X8,
    RTX_16X32,
    RTX_32X16,
    RTX_32X64,
    RTX_64X32,
    RTX_4X16,
    RTX_16X4,
    RTX_8X32,
    RTX_32X8,
    RTX_16X64,
    RTX_64X16,
    N_RECT_TX_SIZES
};

enum TxfmType {
    DCT_DCT,    // DCT  in both horizontal and vertical
    ADST_DCT,   // ADST in vertical, DCT in horizontal
    DCT_ADST,   // DCT  in vertical, ADST in horizontal
    ADST_ADST,  // ADST in both directions
    FLIPADST_DCT,
    DCT_FLIPADST,
    FLIPADST_FLIPADST,
    ADST_FLIPADST,
    FLIPADST_ADST,
    IDTX,
    V_DCT,
    H_DCT,
    V_ADST,
    H_ADST,
    V_FLIPADST,
    H_FLIPADST,
    N_TX_TYPES,
    WHT_WHT = N_TX_TYPES,
    N_TX_TYPES_PLUS_LL,
};

enum TxClass {
    TX_CLASS_2D,
    TX_CLASS_H,
    TX_CLASS_V,
};

enum IntraPredMode {
    DC_PRED,
    VERT_PRED,
    HOR_PRED,
    DIAG_DOWN_LEFT_PRED,
    DIAG_DOWN_RIGHT_PRED,
    VERT_RIGHT_PRED,
    HOR_DOWN_PRED,
    HOR_UP_PRED,
    VERT_LEFT_PRED,
    SMOOTH_PRED,
    SMOOTH_V_PRED,
    SMOOTH_H_PRED,
    PAETH_PRED,
    N_INTRA_PRED_MODES,
    CFL_PRED = N_INTRA_PRED_MODES,
    N_UV_INTRA_PRED_MODES,
    N_IMPL_INTRA_PRED_MODES = N_UV_INTRA_PRED_MODES,
    LEFT_DC_PRED = DIAG_DOWN_LEFT_PRED,
    TOP_DC_PRED,
    DC_128_PRED,
    Z1_PRED,
    Z2_PRED,
    Z3_PRED,
    FILTER_PRED = N_INTRA_PRED_MODES,
};

enum InterIntraPredMode {
    II_DC_PRED,
    II_VERT_PRED,
    II_HOR_PRED,
    II_SMOOTH_PRED,
    N_INTER_INTRA_PRED_MODES,
};

enum BlockPartition {
    PARTITION_NONE,     // [ ] <-.
    PARTITION_H,        // [-]   |
    PARTITION_V,        // [|]   |
    PARTITION_SPLIT,    // [+] --'
    PARTITION_T_TOP_SPLIT,    // [⊥] i.e. split top, H bottom
    PARTITION_T_BOTTOM_SPLIT, // [т] i.e. H top, split bottom
    PARTITION_T_LEFT_SPLIT,   // [-|] i.e. split left, V right
    PARTITION_T_RIGHT_SPLIT,  // [|-] i.e. V left, split right
    PARTITION_H4,       // [Ⲷ]
    PARTITION_V4,       // [Ⲽ]
    N_PARTITIONS,
    N_SUB8X8_PARTITIONS = PARTITION_T_TOP_SPLIT,
};

enum BlockSize {
    BS_128x128,
    BS_128x64,
    BS_64x128,
    BS_64x64,
    BS_64x32,
    BS_64x16,
    BS_32x64,
    BS_32x32,
    BS_32x16,
    BS_32x8,
    BS_16x64,
    BS_16x32,
    BS_16x16,
    BS_16x8,
    BS_16x4,
    BS_8x32,
    BS_8x16,
    BS_8x8,
    BS_8x4,
    BS_4x16,
    BS_4x8,
    BS_4x4,
    N_BS_SIZES,
};

enum Filter2d { // order is horizontal, vertical
    FILTER_2D_8TAP_REGULAR,
    FILTER_2D_8TAP_REGULAR_SMOOTH,
    FILTER_2D_8TAP_REGULAR_SHARP,
    FILTER_2D_8TAP_SHARP_REGULAR,
    FILTER_2D_8TAP_SHARP_SMOOTH,
    FILTER_2D_8TAP_SHARP,
    FILTER_2D_8TAP_SMOOTH_REGULAR,
    FILTER_2D_8TAP_SMOOTH,
    FILTER_2D_8TAP_SMOOTH_SHARP,
    FILTER_2D_BILINEAR,
    N_2D_FILTERS,
};

enum MVJoint {
    MV_JOINT_ZERO,
    MV_JOINT_H,
    MV_JOINT_V,
    MV_JOINT_HV,
    N_MV_JOINTS,
};

enum InterPredMode {
    NEARESTMV,
    NEARMV,
    GLOBALMV,
    NEWMV,
    N_INTER_PRED_MODES,
};

enum DRL_PROXIMITY {
    NEAREST_DRL,
    NEARER_DRL,
    NEAR_DRL,
    NEARISH_DRL
};

enum CompInterPredMode {
    NEARESTMV_NEARESTMV,
    NEARMV_NEARMV,
    NEARESTMV_NEWMV,
    NEWMV_NEARESTMV,
    NEARMV_NEWMV,
    NEWMV_NEARMV,
    GLOBALMV_GLOBALMV,
    NEWMV_NEWMV,
    N_COMP_INTER_PRED_MODES,
};

enum CompInterType {
    COMP_INTER_NONE,
    COMP_INTER_WEIGHTED_AVG,
    COMP_INTER_AVG,
    COMP_INTER_SEG,
    COMP_INTER_WEDGE,
};

enum InterIntraType {
    INTER_INTRA_NONE,
    INTER_INTRA_BLEND,
    INTER_INTRA_WEDGE,
};

typedef struct mv {
    int16_t y, x;
} mv;

enum MotionMode {
    MM_TRANSLATION,
    MM_OBMC,
    MM_WARP,
};

#define QINDEX_RANGE 256

typedef struct Av1Block {
    uint8_t bl, bs, bp;
    uint8_t intra, seg_id, skip_mode, skip, uvtx;
    union {
        struct {
            uint8_t y_mode, uv_mode, tx, pal_sz[2];
            int8_t y_angle, uv_angle, cfl_alpha[2];
        }; // intra
        struct {
            int8_t ref[2];
            uint8_t comp_type, wedge_idx, mask_sign, inter_mode, drl_idx;
            uint8_t interintra_type, interintra_mode, motion_mode;
            uint8_t max_ytx, filter2d;
            uint16_t tx_split[2];
            mv mv[2];
        }; // inter
    };
} Av1Block;

#endif /* DAV1D_SRC_LEVELS_H */