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/*
* Copyright © 2024 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 <assert.h>
#include <stdint.h>
#include "config.h"
#include "libavutil/attributes.h"
#include "libavutil/cpu.h"
#include "libavutil/riscv/cpu.h"
#include "libavutil/lls.h"
void ff_lls_update_covariance_rvv(double covar[][36], const double *var,
int count);
double ff_scalarproduct_double_rvv(const double *, const double *, size_t);
static void ff_lls_update_rvv(struct LLSModel *m, const double *var)
{
ff_lls_update_covariance_rvv(m->covariance, var, m->indep_count + 1);
}
static double ff_lls_evaluate_rvv(struct LLSModel *m, const double *var,
int order)
{
return ff_scalarproduct_double_rvv(m->coeff[order], var, order + 1);
}
av_cold void ff_init_lls_riscv(LLSModel *m)
{
#if HAVE_RVV
int flags = av_get_cpu_flags();
if ((flags & AV_CPU_FLAG_RVB_ADDR) && (flags & AV_CPU_FLAG_RVV_F64)) {
if ((flags & AV_CPU_FLAG_RVB_BASIC) &&
ff_get_rv_vlenb() > m->indep_count)
m->update_lls = ff_lls_update_rvv;
m->evaluate_lls = ff_lls_evaluate_rvv;
}
#endif
}
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