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 "libavutil/arm/cpu.h"
22#include "libavcodec/fft.h"
23#include "libavcodec/rdft.h"
24#include "libavcodec/synth_filter.h"
25
26void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
27void ff_fft_calc_neon(FFTContext *s, FFTComplex *z);
28
29void ff_imdct_half_vfp(FFTContext *s, FFTSample *output, const FFTSample *input);
30
31void ff_imdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
32void ff_imdct_half_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
33void ff_mdct_calc_neon(FFTContext *s, FFTSample *output, const FFTSample *input);
34
35void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z);
36
37av_cold void ff_fft_init_arm(FFTContext *s)
38{
39    int cpu_flags = av_get_cpu_flags();
40
41    if (have_vfp(cpu_flags)) {
42#if CONFIG_MDCT
43        if (!have_vfpv3(cpu_flags))
44            s->imdct_half   = ff_imdct_half_vfp;
45#endif
46    }
47
48    if (have_neon(cpu_flags)) {
49#if CONFIG_FFT
50        s->fft_permute  = ff_fft_permute_neon;
51        s->fft_calc     = ff_fft_calc_neon;
52#endif
53#if CONFIG_MDCT
54        s->imdct_calc   = ff_imdct_calc_neon;
55        s->imdct_half   = ff_imdct_half_neon;
56        s->mdct_calc    = ff_mdct_calc_neon;
57        s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
58#endif
59    }
60}
61
62#if CONFIG_RDFT
63av_cold void ff_rdft_init_arm(RDFTContext *s)
64{
65    int cpu_flags = av_get_cpu_flags();
66
67    if (have_neon(cpu_flags))
68        s->rdft_calc    = ff_rdft_calc_neon;
69}
70#endif
71