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libavutil
x86
lls_init.c
Go to the documentation of this file.
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/*
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* linear least squares model
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*
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* Copyright (c) 2013 Loren Merritt
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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 "
libavutil/lls.h
"
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#include "
libavutil/x86/cpu.h
"
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void
ff_update_lls_sse2
(
LLSModel
*
m
,
const
double
*var);
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void
ff_update_lls_avx
(
LLSModel
*
m
,
const
double
*var);
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double
ff_evaluate_lls_sse2
(
LLSModel
*
m
,
const
double
*var,
int
order);
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av_cold
void
ff_init_lls_x86
(
LLSModel
*
m
)
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{
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int
cpu_flags =
av_get_cpu_flags
();
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if
(
EXTERNAL_SSE2
(cpu_flags)) {
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m->
update_lls
=
ff_update_lls_sse2
;
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if
(m->
indep_count
>= 4)
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m->
evaluate_lls
=
ff_evaluate_lls_sse2
;
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}
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if
(
EXTERNAL_AVX
(cpu_flags)) {
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m->
update_lls
=
ff_update_lls_avx
;
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}
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}
Generated on Tue Jun 21 2022 16:28:54 for FFmpeg by
1.8.1.2