42 lines
1.4 KiB
C
42 lines
1.4 KiB
C
/*
|
|
* linear least squares model
|
|
*
|
|
* Copyright (c) 2013 Loren Merritt
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav 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.
|
|
*
|
|
* Libav 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 Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavutil/lls.h"
|
|
#include "libavutil/x86/cpu.h"
|
|
|
|
void ff_update_lls_sse2(LLSModel *m, double *var);
|
|
void ff_update_lls_avx(LLSModel *m, double *var);
|
|
double ff_evaluate_lls_sse2(LLSModel *m, double *var, int order);
|
|
|
|
av_cold void ff_init_lls_x86(LLSModel *m)
|
|
{
|
|
int cpu_flags = av_get_cpu_flags();
|
|
if (EXTERNAL_SSE2(cpu_flags)) {
|
|
m->update_lls = ff_update_lls_sse2;
|
|
if (m->indep_count >= 4)
|
|
m->evaluate_lls = ff_evaluate_lls_sse2;
|
|
}
|
|
if (EXTERNAL_AVX(cpu_flags)) {
|
|
m->update_lls = ff_update_lls_avx;
|
|
}
|
|
}
|