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"
24 #include "libavcodec/fft.h"
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
);
30 av_cold
void ff_fft_fixed_init_arm(FFTContext
*s
)
32 int cpu_flags
= av_get_cpu_flags();
34 if (have_neon(cpu_flags
)) {
35 s
->fft_permutation
= FF_FFT_PERM_SWAP_LSBS
;
37 s
->fft_calc
= ff_fft_fixed_calc_neon
;
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
;