57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
/*
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* Copyright © 2024 Rémi Denis-Courmont.
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <assert.h>
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#include <stdint.h>
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#include "config.h"
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#include "libavutil/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/riscv/cpu.h"
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#include "libavutil/lls.h"
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void ff_lls_update_covariance_rvv(double covar[][36], const double *var,
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int count);
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double ff_scalarproduct_double_rvv(const double *, const double *, size_t);
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static void ff_lls_update_rvv(struct LLSModel *m, const double *var)
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{
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ff_lls_update_covariance_rvv(m->covariance, var, m->indep_count + 1);
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}
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static double ff_lls_evaluate_rvv(struct LLSModel *m, const double *var,
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int order)
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{
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return ff_scalarproduct_double_rvv(m->coeff[order], var, order + 1);
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}
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av_cold void ff_init_lls_riscv(LLSModel *m)
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{
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#if HAVE_RVV
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int flags = av_get_cpu_flags();
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if ((flags & AV_CPU_FLAG_RVB) && (flags & AV_CPU_FLAG_RVV_F64)) {
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if (ff_get_rv_vlenb() > m->indep_count)
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m->update_lls = ff_lls_update_rvv;
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m->evaluate_lls = ff_lls_evaluate_rvv;
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}
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#endif
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}
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