/*
 * Copyright (c) 2021, Alliance for Open Media. All rights reserved
 *
 * This source code is subject to the terms of the BSD 3-Clause Clear License
 * and the Alliance for Open Media Patent License 1.0. If the BSD 3-Clause Clear
 * License was not distributed with this source code in the LICENSE file, you
 * can obtain it at aomedia.org/license/software-license/bsd-3-c-c/.  If the
 * Alliance for Open Media Patent License 1.0 was not distributed with this
 * source code in the PATENTS file, you can obtain it at
 * aomedia.org/license/patent-license/.
 */

#ifndef AOM_AV1_COMMON_CDEF_BLOCK_H_
#define AOM_AV1_COMMON_CDEF_BLOCK_H_

#include "av1/common/odintrin.h"

#define CDEF_BLOCKSIZE 64
#define CDEF_BLOCKSIZE_LOG2 6
#define CDEF_NBLOCKS ((1 << MAX_SB_SIZE_LOG2) / 8)
#define CDEF_SB_SHIFT (MAX_SB_SIZE_LOG2 - CDEF_BLOCKSIZE_LOG2)
#define CDEF_IN_SB_STRIDE (1 << (CDEF_SB_SHIFT))
#define CDEF_IN_SB (1 << (CDEF_SB_SHIFT * 2))
#define MI_IN_CDEF_LINEAR_LOG2 (CDEF_BLOCKSIZE_LOG2 - MI_SIZE_LOG2)

/* We need to buffer three vertical lines. */
#define CDEF_VBORDER (3)
/* We only need to buffer three horizontal pixels too, but let's align to
   16 bytes (8 x 16 bits) to make vectorization easier. */
#define CDEF_HBORDER (8)
#define CDEF_BSTRIDE \
  ALIGN_POWER_OF_TWO((1 << MAX_SB_SIZE_LOG2) + 2 * CDEF_HBORDER, 3)

#define CDEF_VERY_LARGE (30000)
#define CDEF_INBUF_SIZE \
  (CDEF_BSTRIDE * ((1 << MAX_SB_SIZE_LOG2) + 2 * CDEF_VBORDER))

extern const int cdef_pri_taps[2][2];
extern const int cdef_sec_taps[2];
DECLARE_ALIGNED(16, extern const int, cdef_directions[8][2]);

typedef struct {
  uint8_t by;
  uint8_t bx;
} cdef_list;

typedef void (*cdef_filter_block_func)(uint8_t *dst8, uint16_t *dst16,
                                       int dstride, const uint16_t *in,
                                       int pri_strength, int sec_strength,
                                       int dir, int pri_damping,
                                       int sec_damping, int bsize,
                                       int coeff_shift);
void copy_cdef_16bit_to_16bit(uint16_t *dst, int dstride, uint16_t *src,
                              cdef_list *dlist, int cdef_count, int bsize);

void av1_cdef_filter_fb(uint8_t *dst8, uint16_t *dst16, int dstride,
                        uint16_t *in, int xdec, int ydec,
                        int dir[CDEF_NBLOCKS][CDEF_NBLOCKS], int *dirinit,
                        int var[CDEF_NBLOCKS][CDEF_NBLOCKS], int pli,
                        cdef_list *dlist, int cdef_count, int level,
                        int sec_strength, int damping, int coeff_shift);
#endif  // AOM_AV1_COMMON_CDEF_BLOCK_H_