mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.9 KiB
62 lines
1.9 KiB
/* |
|
* Copyright (c) 2002 Brian Foley |
|
* Copyright (c) 2002 Dieter Shirley |
|
* Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org> |
|
* |
|
* 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 "config.h" |
|
#if HAVE_ALTIVEC_H |
|
#include <altivec.h> |
|
#endif |
|
|
|
#include "libavutil/attributes.h" |
|
#include "libavutil/cpu.h" |
|
#include "libavutil/ppc/cpu.h" |
|
#include "libavutil/ppc/types_altivec.h" |
|
#include "libavutil/ppc/util_altivec.h" |
|
#include "libavcodec/huffyuvdsp.h" |
|
|
|
#if HAVE_ALTIVEC |
|
static void add_bytes_altivec(uint8_t *dst, uint8_t *src, int 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_huffyuvdsp_init_ppc(HuffYUVDSPContext *c) |
|
{ |
|
#if HAVE_ALTIVEC |
|
if (!PPC_ALTIVEC(av_get_cpu_flags())) |
|
return; |
|
|
|
c->add_bytes = add_bytes_altivec; |
|
#endif /* HAVE_ALTIVEC */ |
|
}
|
|
|