FFmpeg
videodsp.c
Go to the documentation of this file.
1 /*
2  * Copyright (c) 2003-2004 Romain Dolbeau
3  *
4  * This file is part of FFmpeg.
5  *
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.
10  *
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.
15  *
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
19  */
20 
21 #include "libavutil/attributes.h"
22 #include "libavcodec/videodsp.h"
23 
24 static void prefetch_ppc(uint8_t *mem, ptrdiff_t stride, int h)
25 {
26  register const uint8_t *p = mem;
27  do {
28  __asm__ volatile ("dcbt 0,%0" : : "r" (p));
29  p += stride;
30  } while(--h);
31 }
32 
34 {
35  ctx->prefetch = prefetch_ppc;
36 }
stride
int stride
Definition: mace.c:144
mem
int mem
Definition: avisynth_c.h:916
av_cold
#define av_cold
Definition: attributes.h:84
ctx
AVFormatContext * ctx
Definition: movenc.c:48
ff_videodsp_init_ppc
av_cold void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc)
Definition: videodsp.c:33
prefetch_ppc
static void prefetch_ppc(uint8_t *mem, ptrdiff_t stride, int h)
Definition: videodsp.c:24
attributes.h
uint8_t
uint8_t
Definition: audio_convert.c:194
VideoDSPContext
Definition: videodsp.h:41
videodsp.h
h
h
Definition: vp9dsp_template.c:2038