/*
 * Copyright © 2023 Rémi Denis-Courmont.
 *
 * 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
 */

#include "config.h"

#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavcodec/lossless_videoencdsp.h"

#include "libavcodec/mathops.h"
#include <sys/param.h>

void ff_llvidenc_sub_median_pred_rvb(uint8_t *dst, const uint8_t *src1,
                                     const uint8_t *src2, intptr_t w,
                                     int *left, int *left_top);
void ff_llvidenc_diff_bytes_rvv(uint8_t *dst, const uint8_t *src1,
                                const uint8_t *src2, intptr_t w);
void ff_llvidenc_sub_median_pred_rvv(uint8_t *dst, const uint8_t *src1,
                                     const uint8_t *src2, intptr_t width,
                                     int *left, int *left_top);
void ff_llvidenc_sub_left_predict_rvv(uint8_t *dst, const uint8_t *src,
                                      ptrdiff_t stride, ptrdiff_t width,
                                      int height);

av_cold void ff_llvidencdsp_init_riscv(LLVidEncDSPContext *c)
{
#if HAVE_RV
    int flags = av_get_cpu_flags();

    if (flags & AV_CPU_FLAG_RVB_BASIC)
        c->sub_median_pred = ff_llvidenc_sub_median_pred_rvb;

#if HAVE_RVV
    if (flags & AV_CPU_FLAG_RVV_I32) {
        c->diff_bytes = ff_llvidenc_diff_bytes_rvv;
        c->sub_median_pred = ff_llvidenc_sub_median_pred_rvv;
        c->sub_left_predict = ff_llvidenc_sub_left_predict_rvv;
    }
#endif
#endif
}