2f749e49dfe4906e7368d2a4355eedeb2b6471bb
[libav.git] / libavcodec / arm / fft_fixed_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
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 s->fft_calc = ff_fft_fixed_calc_neon;
37
38 #if CONFIG_MDCT
39 if (!s->inverse && s->nbits >= 3) {
40 s->mdct_permutation = FF_MDCT_PERM_INTERLEAVE;
41 s->mdct_calc = ff_mdct_fixed_calc_neon;
42 s->mdct_calcw = ff_mdct_fixed_calcw_neon;
43 }
44 #endif
45 }
46 }