1 /*
2 * This file is part of FFmpeg.
3 *
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.
8 *
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.
13 *
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
17 */
18
19 #include "libavutil/attributes.h"
20 #include "libavutil/cpu.h"
21 #include "libavutil/aarch64/cpu.h"
22 #include "libavcodec/videodsp.h"
23
24 void ff_prefetch_aarch64(uint8_t *mem, ptrdiff_t stride, int h);
25
ff_videodsp_init_aarch64(VideoDSPContext * ctx,int bpc)26 av_cold void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc)
27 {
28 int cpu_flags = av_get_cpu_flags();
29
30 if (have_armv8(cpu_flags))
31 ctx->prefetch = ff_prefetch_aarch64;
32 }
33