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libavcodec
arm
fft_fixed_init_arm.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 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/arm/cpu.h
"
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#define CONFIG_FFT_FLOAT 0
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#include "
libavcodec/fft.h
"
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void
ff_fft_fixed_calc_neon
(
FFTContext
*
s
,
FFTComplex
*z);
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void
ff_mdct_fixed_calc_neon
(
FFTContext
*
s
,
FFTSample
*o,
const
FFTSample
*i);
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void
ff_mdct_fixed_calcw_neon
(
FFTContext
*
s
,
FFTDouble
*o,
const
FFTSample
*i);
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av_cold
void
ff_fft_fixed_init_arm
(
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_permutation
=
FF_FFT_PERM_SWAP_LSBS
;
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#if CONFIG_FFT
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s->
fft_calc
=
ff_fft_fixed_calc_neon
;
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#endif
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#if CONFIG_MDCT
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if
(!s->
inverse
&& s->
nbits
>= 3) {
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s->
mdct_permutation
=
FF_MDCT_PERM_INTERLEAVE
;
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s->
mdct_calc
=
ff_mdct_fixed_calc_neon
;
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s->
mdct_calcw
=
ff_mdct_fixed_calcw_neon
;
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}
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#endif
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}
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}
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1.8.2