1 /*
2 * Copyright (c) 2002 Brian Foley
3 * Copyright (c) 2002 Dieter Shirley
4 * Copyright (c) 2003-2004 Romain Dolbeau <romain@dolbeau.org>
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include "config.h"
24
29
31
32 #if HAVE_ALTIVEC
33 static void add_bytes_altivec(uint8_t *
dst, uint8_t *
src, ptrdiff_t
w)
34 {
36 register vector unsigned char vdst, vsrc;
37
38 /* dst and src are 16 bytes-aligned (guaranteed). */
39 for (
i = 0;
i + 15 <
w;
i += 16) {
40 vdst = vec_ld(
i, (
unsigned char *)
dst);
41 vsrc = vec_ld(
i, (
unsigned char *)
src);
42 vdst = vec_add(vsrc, vdst);
43 vec_st(vdst,
i, (
unsigned char *)
dst);
44 }
45 /* If w is not a multiple of 16. */
48 }
49 #endif /* HAVE_ALTIVEC */
50
52 {
53 #if HAVE_ALTIVEC
55 return;
56
57 c->add_bytes = add_bytes_altivec;
58 #endif /* HAVE_ALTIVEC */
59 }