FFmpeg
2.6.9
Main Page
Related Pages
Modules
Namespaces
Data Structures
Files
Examples
File List
Globals
All
Data Structures
Namespaces
Files
Functions
Variables
Typedefs
Enumerations
Enumerator
Macros
Modules
Pages
libavcodec
x86
lossless_audiodsp_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 "
libavutil/attributes.h
"
20
#include "
libavutil/cpu.h
"
21
#include "
libavutil/x86/cpu.h
"
22
#include "
libavcodec/lossless_audiodsp.h
"
23
24
int32_t
ff_scalarproduct_and_madd_int16_mmxext
(int16_t *v1,
const
int16_t *v2,
25
const
int16_t *v3,
26
int
order,
int
mul);
27
int32_t
ff_scalarproduct_and_madd_int16_sse2
(int16_t *v1,
const
int16_t *v2,
28
const
int16_t *v3,
29
int
order,
int
mul);
30
int32_t
ff_scalarproduct_and_madd_int16_ssse3
(int16_t *v1,
const
int16_t *v2,
31
const
int16_t *v3,
32
int
order,
int
mul);
33
34
av_cold
void
ff_llauddsp_init_x86
(
LLAudDSPContext
*
c
)
35
{
36
#if HAVE_YASM
37
int
cpu_flags =
av_get_cpu_flags
();
38
39
if
(
EXTERNAL_MMXEXT
(cpu_flags))
40
c->
scalarproduct_and_madd_int16
=
ff_scalarproduct_and_madd_int16_mmxext
;
41
42
if
(
EXTERNAL_SSE2
(cpu_flags))
43
c->
scalarproduct_and_madd_int16
=
ff_scalarproduct_and_madd_int16_sse2
;
44
45
if
(
EXTERNAL_SSSE3
(cpu_flags) &&
46
!(cpu_flags & (
AV_CPU_FLAG_SSE42
|
AV_CPU_FLAG_3DNOW
)))
// cachesplit
47
c->
scalarproduct_and_madd_int16
=
ff_scalarproduct_and_madd_int16_ssse3
;
48
#endif
49
}
ff_scalarproduct_and_madd_int16_sse2
int32_t ff_scalarproduct_and_madd_int16_sse2(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
cpu.h
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:74
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition:
cpu.h:50
AV_CPU_FLAG_SSE42
#define AV_CPU_FLAG_SSE42
Nehalem SSE4.2 functions.
Definition:
cpu.h:44
LLAudDSPContext
Definition:
lossless_audiodsp.h:28
lossless_audiodsp.h
int32_t
int32_t
Definition:
audio_convert.c:194
ff_scalarproduct_and_madd_int16_ssse3
int32_t ff_scalarproduct_and_madd_int16_ssse3(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
AV_CPU_FLAG_3DNOW
#define AV_CPU_FLAG_3DNOW
AMD 3DNOW.
Definition:
cpu.h:32
ff_scalarproduct_and_madd_int16_mmxext
int32_t ff_scalarproduct_and_madd_int16_mmxext(int16_t *v1, const int16_t *v2, const int16_t *v3, int order, int mul)
cpu.h
EXTERNAL_SSSE3
#define EXTERNAL_SSSE3(flags)
Definition:
cpu.h:52
LLAudDSPContext::scalarproduct_and_madd_int16
int32_t(* scalarproduct_and_madd_int16)(int16_t *v1, const int16_t *v2, const int16_t *v3, int len, int mul)
Calculate scalar product of v1 and v2, and v1[i] += v3[i] * mul.
Definition:
lossless_audiodsp.h:35
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:75
ff_llauddsp_init_x86
av_cold void ff_llauddsp_init_x86(LLAudDSPContext *c)
Definition:
lossless_audiodsp_init.c:34
EXTERNAL_MMXEXT
#define EXTERNAL_MMXEXT(flags)
Definition:
cpu.h:48
c
static double c[64]
Definition:
vsrc_mptestsrc.c:87
Generated on Thu Sep 30 2021 22:58:14 for FFmpeg by
1.8.8