lls_init.c 1.39 KB
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/*
 * linear least squares model
 *
 * Copyright (c) 2013 Loren Merritt
 *
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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
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
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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
 * 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
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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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#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);
void ff_update_lls_avx(LLSModel *m, const double *var);
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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{
    int cpu_flags = av_get_cpu_flags();
    if (EXTERNAL_SSE2(cpu_flags)) {
        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;
    }
}