1/*
2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21#include "config.h"
22
23#include "libavutil/attributes.h"
24#include "libavutil/cpu.h"
25#include "libavutil/aarch64/cpu.h"
26
27#include "libavcodec/fft.h"
28
29void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
30void ff_fft_calc_neon(FFTContext *s, FFTComplex *z);
31
32void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
33void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
34void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
35
36av_cold void ff_fft_init_aarch64(FFTContext *s)
37{
38    int cpu_flags = av_get_cpu_flags();
39
40    if (have_neon(cpu_flags)) {
41        s->fft_permute  = ff_fft_permute_neon;
42        s->fft_calc     = ff_fft_calc_neon;
43#if CONFIG_MDCT
44        s->imdct_calc   = ff_imdct_calc_neon;
45        s->imdct_half   = ff_imdct_half_neon;
46        s->mdct_calc    = ff_mdct_calc_neon;
47        s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
48#endif
49    }
50}
51