1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
/*
* 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/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
c->add_bytes = add_bytes_altivec;
#endif /* HAVE_ALTIVEC */
}
|
