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libavcodec
arm
fft_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 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/arm/cpu.h
"
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#include "
libavcodec/fft.h
"
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#include "
libavcodec/rdft.h
"
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#include "
libavcodec/synth_filter.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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void
ff_imdct_half_vfp
(
FFTContext
*s,
FFTSample
*output,
const
FFTSample
*input);
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void
ff_imdct_calc_neon
(
FFTContext
*s,
FFTSample
*output,
const
FFTSample
*input);
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void
ff_imdct_half_neon
(
FFTContext
*s,
FFTSample
*output,
const
FFTSample
*input);
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void
ff_mdct_calc_neon
(
FFTContext
*s,
FFTSample
*output,
const
FFTSample
*input);
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void
ff_rdft_calc_neon
(
struct
RDFTContext
*s,
FFTSample
*z);
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av_cold
void
ff_fft_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_vfp
(cpu_flags)) {
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#if CONFIG_MDCT
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if
(!
have_vfpv3
(cpu_flags))
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s->
imdct_half
=
ff_imdct_half_vfp
;
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#endif
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}
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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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#if CONFIG_MDCT
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s->
imdct_calc
=
ff_imdct_calc_neon
;
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s->
imdct_half
=
ff_imdct_half_neon
;
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s->
mdct_calc
=
ff_mdct_calc_neon
;
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s->
mdct_permutation
=
FF_MDCT_PERM_INTERLEAVE
;
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#endif
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}
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}
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#if CONFIG_RDFT
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av_cold
void
ff_rdft_init_arm
(
RDFTContext
*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->
rdft_calc
=
ff_rdft_calc_neon
;
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}
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#endif
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