2 * Copyright (c) 2009 Mans Rullgard <mans@mansr.com>
4 * This file is part of FFmpeg.
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.
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.
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
21 #include "libavutil/arm/cpu.h"
22 #include "libavcodec/fft.h"
23 #include "libavcodec/rdft.h"
24 #include "libavcodec/synth_filter.h"
26 void ff_fft_calc_vfp(FFTContext *s, FFTComplex *z);
28 void ff_fft_permute_neon(FFTContext *s, FFTComplex *z);
29 void ff_fft_calc_neon(FFTContext *s, FFTComplex *z);
31 void ff_imdct_half_vfp(FFTContext *s, FFTSample *output, const FFTSample *input);
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);
37 void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z);
39 av_cold void ff_fft_init_arm(FFTContext *s)
41 int cpu_flags = av_get_cpu_flags();
43 if (have_vfp(cpu_flags) && !have_vfpv3(cpu_flags)) {
44 s->fft_calc = ff_fft_calc_vfp;
46 s->imdct_half = ff_imdct_half_vfp;
50 if (have_neon(cpu_flags)) {
52 s->fft_permute = ff_fft_permute_neon;
53 s->fft_calc = ff_fft_calc_neon;
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;
65 av_cold void ff_rdft_init_arm(RDFTContext *s)
67 int cpu_flags = av_get_cpu_flags();
69 if (have_neon(cpu_flags))
70 s->rdft_calc = ff_rdft_calc_neon;