FFmpeg
lls_init.c
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1 /*
2  * linear least squares model
3  *
4  * Copyright (c) 2013 Loren Merritt
5  *
6  * This file is part of FFmpeg.
7  *
8  * FFmpeg is free software; you can redistribute it and/or
9  * modify it under the terms of the GNU Lesser General Public
10  * License as published by the Free Software Foundation; either
11  * version 2.1 of the License, or (at your option) any later version.
12  *
13  * FFmpeg is distributed in the hope that it will be useful,
14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16  * Lesser General Public License for more details.
17  *
18  * You should have received a copy of the GNU Lesser General Public
19  * License along with FFmpeg; if not, write to the Free Software
20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21  */
22 
23 #include "libavutil/attributes.h"
24 #include "libavutil/lls.h"
25 #include "libavutil/x86/cpu.h"
26 
27 void ff_update_lls_sse2(LLSModel *m, const double *var);
28 void ff_update_lls_avx(LLSModel *m, const double *var);
29 void ff_update_lls_fma3(LLSModel *m, const double *var);
30 double ff_evaluate_lls_sse2(LLSModel *m, const double *var, int order);
31 
33 {
35  if (EXTERNAL_SSE2(cpu_flags)) {
37  if (m->indep_count >= 4)
39  }
42  }
45  }
46 }
LLSModel
Linear least squares model.
Definition: lls.h:37
cpu.h
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:96
cpu_flags
static atomic_int cpu_flags
Definition: cpu.c:50
ff_update_lls_fma3
void ff_update_lls_fma3(LLSModel *m, const double *var)
ff_update_lls_sse2
void ff_update_lls_sse2(LLSModel *m, const double *var)
av_cold
#define av_cold
Definition: attributes.h:90
lls.h
EXTERNAL_AVX_FAST
#define EXTERNAL_AVX_FAST(flags)
Definition: cpu.h:71
ff_init_lls_x86
av_cold void ff_init_lls_x86(LLSModel *m)
Definition: lls_init.c:32
LLSModel::update_lls
void(* update_lls)(struct LLSModel *m, const double *var)
Take the outer-product of var[] with itself, and add to the covariance matrix.
Definition: lls.h:49
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition: cpu.h:59
LLSModel::evaluate_lls
double(* evaluate_lls)(struct LLSModel *m, const double *var, int order)
Inner product of var[] and the LPC coefs.
Definition: lls.h:56
LLSModel::indep_count
int indep_count
Definition: lls.h:41
EXTERNAL_FMA3_FAST
#define EXTERNAL_FMA3_FAST(flags)
Definition: cpu.h:75
ff_update_lls_avx
void ff_update_lls_avx(LLSModel *m, const double *var)
ff_evaluate_lls_sse2
double ff_evaluate_lls_sse2(LLSModel *m, const double *var, int order)