/*
 * 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
 */

#ifndef AVFILTER_BWDIFDSP_H
#define AVFILTER_BWDIFDSP_H

#include <stdint.h>
#include <string.h>

typedef struct BWDIFDSPContext {
    void (*filter_intra)(void *dst1, const void *cur1, int w, int prefs, int mrefs,
                         int prefs3, int mrefs3, int parity, int clip_max);
    void (*filter_line)(void *dst, const void *prev, const void *cur, const void *next,
                        int w, int prefs, int mrefs, int prefs2, int mrefs2,
                        int prefs3, int mrefs3, int prefs4, int mrefs4,
                        int parity, int clip_max);
    void (*filter_edge)(void *dst, const void *prev, const void *cur, const void *next,
                        int w, int prefs, int mrefs, int prefs2, int mrefs2,
                        int parity, int clip_max, int spat);
    void (*filter_line3)(void *dst, int dstride,
                         const void *prev, const void *cur, const void *next, int prefs,
                         int w, int parity, int clip_max);
} BWDIFDSPContext;

void ff_bwdif_init_filter_line(BWDIFDSPContext *bwdif, int bit_depth);
void ff_bwdif_init_x86(BWDIFDSPContext *bwdif, int bit_depth);
void ff_bwdif_init_aarch64(BWDIFDSPContext *bwdif, int bit_depth);

void ff_bwdif_filter_edge_c(void *dst1, const void *prev1, const void *cur1, const void *next1,
                            int w, int prefs, int mrefs, int prefs2, int mrefs2,
                            int parity, int clip_max, int spat);

void ff_bwdif_filter_intra_c(void *dst1, const void *cur1, int w, int prefs, int mrefs,
                             int prefs3, int mrefs3, int parity, int clip_max);

void ff_bwdif_filter_line_c(void *dst1, const void *prev1, const void *cur1, const void *next1,
                            int w, int prefs, int mrefs, int prefs2, int mrefs2,
                            int prefs3, int mrefs3, int prefs4, int mrefs4,
                            int parity, int clip_max);

static inline
void ff_bwdif_filter_line3_c(void * dst1, int d_stride,
                             const void * prev1, const void * cur1, const void * next1, int s_stride,
                             int w, int parity, int clip_max)
{
    const int prefs = s_stride;
    uint8_t * dst  = dst1;
    const uint8_t * prev = prev1;
    const uint8_t * cur  = cur1;
    const uint8_t * next = next1;

    ff_bwdif_filter_line_c(dst, prev, cur, next, w,
                           prefs, -prefs, prefs * 2, - prefs * 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
#define NEXT_LINE()\
    dst += d_stride; \
    prev += prefs; \
    cur  += prefs; \
    next += prefs;

    NEXT_LINE();
    memcpy(dst, cur, w);
    NEXT_LINE();
#undef NEXT_LINE
    ff_bwdif_filter_line_c(dst, prev, cur, next, w,
                           prefs, -prefs, prefs * 2, - prefs * 2, prefs * 3, -prefs * 3, prefs * 4, -prefs * 4, parity, clip_max);
}



#endif /* AVFILTER_BWDIFDSP_H */