2 * This file is part of FFmpeg.
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 #include "libavutil/attributes.h"
20 #include "libavutil/cpu.h"
21 #include "libavutil/arm/cpu.h"
23 #include "libavcodec/rdft.h"
25 void ff_rdft_calc_neon(struct RDFTContext *s, FFTSample *z);
27 av_cold void ff_rdft_init_arm(RDFTContext *s)
29 int cpu_flags = av_get_cpu_flags();
31 if (have_neon(cpu_flags))
32 s->rdft_calc = ff_rdft_calc_neon;