60 lines
1.8 KiB
C
Executable File
60 lines
1.8 KiB
C
Executable File
/*
|
|
* Copyright (c) 2002 Brian Foley
|
|
* Copyright (c) 2002 Dieter Shirley
|
|
* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include "libavutil/attributes.h"
|
|
#include "libavutil/cpu.h"
|
|
#include "libavutil/ppc/cpu.h"
|
|
#include "libavutil/ppc/util_altivec.h"
|
|
|
|
#include "libavcodec/lossless_videodsp.h"
|
|
|
|
#if HAVE_ALTIVEC
|
|
static void add_bytes_altivec(uint8_t *dst, uint8_t *src, ptrdiff_t w)
|
|
{
|
|
register int i;
|
|
register vector unsigned char vdst, vsrc;
|
|
|
|
/* dst and src are 16 bytes-aligned (guaranteed). */
|
|
for (i = 0; i + 15 < w; i += 16) {
|
|
vdst = vec_ld(i, (unsigned char *) dst);
|
|
vsrc = vec_ld(i, (unsigned char *) src);
|
|
vdst = vec_add(vsrc, vdst);
|
|
vec_st(vdst, i, (unsigned char *) dst);
|
|
}
|
|
/* If w is not a multiple of 16. */
|
|
for (; i < w; i++)
|
|
dst[i] = src[i];
|
|
}
|
|
#endif /* HAVE_ALTIVEC */
|
|
|
|
av_cold void ff_llviddsp_init_ppc(LLVidDSPContext *c)
|
|
{
|
|
#if HAVE_ALTIVEC
|
|
if (!PPC_ALTIVEC(av_get_cpu_flags()))
|
|
return;
|
|
|
|
c->add_bytes = add_bytes_altivec;
|
|
#endif /* HAVE_ALTIVEC */
|
|
}
|