8c53d39e7f
Move some functions from dsputil. The idea is that videodsp contains functions that are useful for a large and varied set of video decoders. Currently, it contains emulated_edge_mc() and prefetch(). Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
/*
|
|
* Copyright (c) 2003-2004 Romain Dolbeau
|
|
*
|
|
* This file is part of Libav.
|
|
*
|
|
* Libav is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* Libav is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with Libav; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "libavcodec/videodsp.h"
|
|
|
|
static void prefetch_ppc(uint8_t *mem, ptrdiff_t stride, int h)
|
|
{
|
|
register const uint8_t *p = mem;
|
|
do {
|
|
__asm__ volatile ("dcbt 0,%0" : : "r" (p));
|
|
p += stride;
|
|
} while(--h);
|
|
}
|
|
|
|
void ff_videodsp_init_ppc(VideoDSPContext *ctx, int bpc)
|
|
{
|
|
ctx->prefetch = prefetch_ppc;
|
|
}
|