46 lines
1.5 KiB
C
46 lines
1.5 KiB
C
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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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void ff_update_lls_fma3(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_FAST(cpu_flags)) {
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m->update_lls = ff_update_lls_avx;
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}
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if (EXTERNAL_FMA3_FAST(cpu_flags)) {
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m->update_lls = ff_update_lls_fma3;
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}
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}
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