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