6d6fa220a5237286ae919008f2d225afb201de08
[libav.git] / libavcodec / arm / fft_init_arm.c
1 /*
2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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 * Libav 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 Libav; 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_vm(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 s->fft_permute = ff_fft_permute_neon;
52 s->fft_calc = ff_fft_calc_neon;
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
63 av_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