FFmpeg
4.2.1
libavfilter
x86
af_afir_init.c
Go to the documentation of this file.
1
/*
2
* This file is part of FFmpeg.
3
*
4
* FFmpeg is free software; you can redistribute it and/or
5
* modify it under the terms of the GNU Lesser General Public
6
* License as published by the Free Software Foundation; either
7
* version 2.1 of the License, or (at your option) any later version.
8
*
9
* FFmpeg is distributed in the hope that it will be useful,
10
* but WITHOUT ANY WARRANTY; without even the implied warranty of
11
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12
* Lesser General Public License for more details.
13
*
14
* You should have received a copy of the GNU Lesser General Public
15
* License along with FFmpeg; if not, write to the Free Software
16
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17
*/
18
19
#include "config.h"
20
#include "
libavutil/attributes.h
"
21
#include "
libavutil/cpu.h
"
22
#include "
libavutil/x86/cpu.h
"
23
#include "
libavfilter/af_afir.h
"
24
25
void
ff_fcmul_add_sse3
(
float
*sum,
const
float
*t,
const
float
*
c
,
26
ptrdiff_t
len
);
27
void
ff_fcmul_add_avx
(
float
*sum,
const
float
*t,
const
float
*
c
,
28
ptrdiff_t
len
);
29
30
av_cold
void
ff_afir_init_x86
(
AudioFIRDSPContext
*
s
)
31
{
32
int
cpu_flags
=
av_get_cpu_flags
();
33
34
if
(
EXTERNAL_SSE3
(cpu_flags)) {
35
s->
fcmul_add
=
ff_fcmul_add_sse3
;
36
}
37
if
(
EXTERNAL_AVX_FAST
(cpu_flags)) {
38
s->
fcmul_add
=
ff_fcmul_add_avx
;
39
}
40
}
ff_fcmul_add_avx
void ff_fcmul_add_avx(float *sum, const float *t, const float *c, ptrdiff_t len)
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:50
cpu.h
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:82
EXTERNAL_AVX_FAST
#define EXTERNAL_AVX_FAST(flags)
Definition:
cpu.h:71
EXTERNAL_SSE3
#define EXTERNAL_SSE3(flags)
Definition:
cpu.h:62
ff_afir_init_x86
av_cold void ff_afir_init_x86(AudioFIRDSPContext *s)
Definition:
af_afir_init.c:30
AudioFIRDSPContext
Definition:
af_afir.h:56
s
#define s(width, name)
Definition:
cbs_vp9.c:257
AudioFIRDSPContext::fcmul_add
void(* fcmul_add)(float *sum, const float *t, const float *c, ptrdiff_t len)
Definition:
af_afir.h:57
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:93
ff_fcmul_add_sse3
void ff_fcmul_add_sse3(float *sum, const float *t, const float *c, ptrdiff_t len)
af_afir.h
c
static double c[64]
Definition:
vsrc_mptestsrc.c:87
len
int len
Definition:
vorbis_enc_data.h:452
Generated on Thu Sep 26 2019 14:53:49 for FFmpeg by
1.8.13