1 /*
2 * This file is part of FFmpeg.
3 *
4 * FFmpeg is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * FFmpeg is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with FFmpeg; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
17 */
18
19 #include <stdint.h>
20
21 #include "libavutil/attributes.h"
22 #include "libavutil/bswap.h"
23 #include "bswapdsp.h"
24
bswap_buf(uint32_t * dst,const uint32_t * src,int w)25 static void bswap_buf(uint32_t *dst, const uint32_t *src, int w)
26 {
27 int i;
28
29 for (i = 0; i + 8 <= w; i += 8) {
30 dst[i + 0] = av_bswap32(src[i + 0]);
31 dst[i + 1] = av_bswap32(src[i + 1]);
32 dst[i + 2] = av_bswap32(src[i + 2]);
33 dst[i + 3] = av_bswap32(src[i + 3]);
34 dst[i + 4] = av_bswap32(src[i + 4]);
35 dst[i + 5] = av_bswap32(src[i + 5]);
36 dst[i + 6] = av_bswap32(src[i + 6]);
37 dst[i + 7] = av_bswap32(src[i + 7]);
38 }
39 for (; i < w; i++)
40 dst[i + 0] = av_bswap32(src[i + 0]);
41 }
42
bswap16_buf(uint16_t * dst,const uint16_t * src,int len)43 static void bswap16_buf(uint16_t *dst, const uint16_t *src, int len)
44 {
45 while (len--)
46 *dst++ = av_bswap16(*src++);
47 }
48
ff_bswapdsp_init(BswapDSPContext * c)49 av_cold void ff_bswapdsp_init(BswapDSPContext *c)
50 {
51 c->bswap_buf = bswap_buf;
52 c->bswap16_buf = bswap16_buf;
53
54 if (ARCH_X86)
55 ff_bswapdsp_init_x86(c);
56 }
57