/*
 * Copyright © 2018-2021, 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_LF_MASK_H
#define DAV1D_SRC_LF_MASK_H

#include <stddef.h>
#include <stdint.h>

#include "src/levels.h"

typedef struct Av1FilterLUT {
    uint8_t e[64];
    uint8_t i[64];
    uint64_t sharp[2];
} Av1FilterLUT;

typedef struct Av1RestorationUnit {
    uint8_t /* enum Dav1dRestorationType */ type;
    int8_t filter_h[3];
    int8_t filter_v[3];
    uint8_t sgr_idx;
    int8_t sgr_weights[2];
} Av1RestorationUnit;

// each struct describes one 128x128 area (1 or 4 SBs), pre-superres-scaling
typedef struct Av1Filter {
    // each bit is 1 col
    uint16_t filter_y[2 /* 0=col, 1=row */][32][3][2];
    uint16_t filter_uv[2 /* 0=col, 1=row */][32][2][2];
    int8_t cdef_idx[4]; // -1 means "unset"
    uint16_t noskip_mask[16][2]; // for 8x8 blocks, but stored on a 4x8 basis
} Av1Filter;

// each struct describes one 128x128 area (1 or 4 SBs), post-superres-scaling
typedef struct Av1Restoration {
    Av1RestorationUnit lr[3][4];
} Av1Restoration;

void dav1d_create_lf_mask_intra(Av1Filter *lflvl, uint8_t (*level_cache)[4],
                                const ptrdiff_t b4_stride,
                                const uint8_t (*level)[8][2], int bx, int by,
                                int iw, int ih, enum BlockSize bs,
                                enum RectTxfmSize ytx, enum RectTxfmSize uvtx,
                                enum Dav1dPixelLayout layout, uint8_t *ay,
                                uint8_t *ly, uint8_t *auv, uint8_t *luv);
void dav1d_create_lf_mask_inter(Av1Filter *lflvl, uint8_t (*level_cache)[4],
                                const ptrdiff_t b4_stride,
                                const uint8_t (*level)[8][2], int bx, int by,
                                int iw, int ih, int skip_inter,
                                enum BlockSize bs, enum RectTxfmSize max_ytx,
                                const uint16_t *tx_mask, enum RectTxfmSize uvtx,
                                enum Dav1dPixelLayout layout, uint8_t *ay,
                                uint8_t *ly, uint8_t *auv, uint8_t *luv);
void dav1d_calc_eih(Av1FilterLUT *lim_lut, int filter_sharpness);
void dav1d_calc_lf_values(uint8_t (*values)[4][8][2], const Dav1dFrameHeader *hdr,
                          const int8_t lf_delta[4]);

#endif /* DAV1D_SRC_LF_MASK_H */