FFmpeg
libavutil
x86
fixed_dsp_init.c
Go to the documentation of this file.
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/*
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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
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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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
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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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*/
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#include "
libavutil/attributes.h
"
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#include "
libavutil/cpu.h
"
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#include "
libavutil/fixed_dsp.h
"
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#include "
cpu.h
"
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void
ff_butterflies_fixed_sse2
(
int
*restrict
src0
,
int
*restrict
src1
,
int
len
);
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av_cold
void
ff_fixed_dsp_init_x86
(
AVFixedDSPContext
*fdsp)
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{
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int
cpu_flags
=
av_get_cpu_flags
();
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if
(
EXTERNAL_SSE2
(
cpu_flags
)) {
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fdsp->
butterflies_fixed
=
ff_butterflies_fixed_sse2
;
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}
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}
AVFixedDSPContext::butterflies_fixed
void(* butterflies_fixed)(int *restrict v1, int *restrict v2, int len)
Calculate the sum and difference of two vectors of integers.
Definition:
fixed_dsp.h:152
src1
const pixel * src1
Definition:
h264pred_template.c:421
ff_fixed_dsp_init_x86
av_cold void ff_fixed_dsp_init_x86(AVFixedDSPContext *fdsp)
Definition:
fixed_dsp_init.c:26
AVFixedDSPContext
Definition:
fixed_dsp.h:55
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:107
cpu_flags
static atomic_int cpu_flags
Definition:
cpu.c:56
av_cold
#define av_cold
Definition:
attributes.h:90
fixed_dsp.h
cpu.h
attributes.h
EXTERNAL_SSE2
#define EXTERNAL_SSE2(flags)
Definition:
cpu.h:59
len
int len
Definition:
vorbis_enc_data.h:426
ff_butterflies_fixed_sse2
void ff_butterflies_fixed_sse2(int *restrict src0, int *restrict src1, int len)
src0
const pixel *const src0
Definition:
h264pred_template.c:420
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