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
22 #include "libavutil/attributes.h"
23 #include "libavutil/cpu.h"
24 #include "libavutil/aarch64/cpu.h"
25 #include "libavutil/samplefmt.h"
26 #include "libavresample/audio_convert.h"
28 void ff_conv_flt_to_s16_neon(int16_t *dst, const float *src, int len);
29 void ff_conv_fltp_to_s16_neon(int16_t *dst, float *const *src,
30 int len, int channels);
31 void ff_conv_fltp_to_s16_2ch_neon(int16_t *dst, float *const *src,
32 int len, int channels);
34 av_cold void ff_audio_convert_init_aarch64(AudioConvert *ac)
36 int cpu_flags = av_get_cpu_flags();
38 if (have_neon(cpu_flags)) {
39 ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT,
41 ff_conv_flt_to_s16_neon);
42 ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
44 ff_conv_fltp_to_s16_2ch_neon);
45 ff_audio_convert_set_func(ac, AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLTP,
47 ff_conv_fltp_to_s16_neon);