FFmpeg
videodsp_init.c
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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 
27 {
29 
30  if (have_armv8(cpu_flags))
32 }
static atomic_int cpu_flags
Definition: cpu.c:50
void(* prefetch)(uint8_t *buf, ptrdiff_t stride, int h)
Prefetch memory into cache (if supported by hardware).
Definition: videodsp.h:76
Macro definitions for various function/variable attributes.
uint8_t
#define av_cold
Definition: attributes.h:88
void ff_prefetch_aarch64(uint8_t *mem, ptrdiff_t stride, int h)
AVFormatContext * ctx
Definition: movenc.c:48
#define have_armv8(flags)
Definition: cpu.h:25
av_cold void ff_videodsp_init_aarch64(VideoDSPContext *ctx, int bpc)
Definition: videodsp_init.c:26
int av_get_cpu_flags(void)
Return the flags which specify extensions supported by the CPU.
Definition: cpu.c:95
GLint GLenum GLboolean GLsizei stride
Definition: opengl_enc.c:104
Core video DSP helper functions.