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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 | ||
23 | #define FFT_FLOAT 0 | |
24 | #include "libavcodec/fft.h" | |
25 | ||
26 | void ff_fft_fixed_calc_neon(FFTContext *s, FFTComplex *z); | |
27 | void ff_mdct_fixed_calc_neon(FFTContext *s, FFTSample *o, const FFTSample *i); | |
28 | void ff_mdct_fixed_calcw_neon(FFTContext *s, FFTDouble *o, const FFTSample *i); | |
29 | ||
30 | av_cold void ff_fft_fixed_init_arm(FFTContext *s) | |
31 | { | |
32 | int cpu_flags = av_get_cpu_flags(); | |
33 | ||
34 | if (have_neon(cpu_flags)) { | |
35 | s->fft_permutation = FF_FFT_PERM_SWAP_LSBS; | |
36 | #if CONFIG_FFT | |
37 | s->fft_calc = ff_fft_fixed_calc_neon; | |
38 | #endif | |
39 | ||
40 | #if CONFIG_MDCT | |
41 | if (!s->inverse && s->nbits >= 3) { | |
42 | s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE; | |
43 | s->mdct_calc = ff_mdct_fixed_calc_neon; | |
44 | s->mdct_calcw = ff_mdct_fixed_calcw_neon; | |
45 | } | |
46 | #endif | |
47 | } | |
48 | } |