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50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/*
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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/attributes.h"
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#include "libavutil/cpu.h"
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#include "libavutil/arm/cpu.h"
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#define 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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