Libav
libavcodec
aarch64
fft_init_aarch64.c
Go to the documentation of this file.
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/*
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* Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
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*
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* This file is part of Libav.
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*
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* Libav 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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* Libav 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 Libav; 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/aarch64/cpu.h
"
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#include "
libavcodec/fft.h
"
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void
ff_fft_permute_neon
(
FFTContext
*s,
FFTComplex
*z);
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void
ff_fft_calc_neon
(
FFTContext
*s,
FFTComplex
*z);
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av_cold
void
ff_fft_init_aarch64
(
FFTContext
*s)
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{
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int
cpu_flags =
av_get_cpu_flags
();
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if
(
have_neon
(cpu_flags)) {
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s->
fft_permute
=
ff_fft_permute_neon
;
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s->
fft_calc
=
ff_fft_calc_neon
;
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}
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}
cpu.h
attributes.h
Macro definitions for various function/variable attributes.
av_cold
#define av_cold
Definition:
attributes.h:66
FFTContext::fft_permute
void(* fft_permute)(struct FFTContext *s, FFTComplex *z)
Do the permutation needed BEFORE calling fft_calc().
Definition:
fft.h:86
FFTContext
Definition:
fft.h:73
have_neon
#define have_neon(flags)
Definition:
cpu.h:27
ff_fft_calc_neon
void ff_fft_calc_neon(FFTContext *s, FFTComplex *z)
cpu.h
ff_fft_permute_neon
void ff_fft_permute_neon(FFTContext *s, FFTComplex *z)
FFTComplex
Definition:
avfft.h:37
av_get_cpu_flags
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition:
cpu.c:47
ff_fft_init_aarch64
av_cold void ff_fft_init_aarch64(FFTContext *s)
Definition:
fft_init_aarch64.c:30
FFTContext::fft_calc
void(* fft_calc)(struct FFTContext *s, FFTComplex *z)
Do a complex FFT with the parameters defined in ff_fft_init().
Definition:
fft.h:91
fft.h
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