Mercurial > cgi-bin > hgwebdir.cgi > PR > Applications > VSs > VSs__H264__App

comparison libavutil/x86/bswap.h @ 3:0b056460c67d

find changesets by author, revision, files, or words in the commit message
changed code to use VSs
author Nina Engelhardt <nengel@mailbox.tu-berlin.de>
date Mon, 29 Oct 2012 16:44:27 +0100
parents
children
comparison
equal deleted inserted replaced
-1:000000000000 0:bbedbd53d449
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 /**
20 * @file
21 * byte swapping routines
22 */
23
24 #ifndef AVUTIL_X86_BSWAP_H
25 #define AVUTIL_X86_BSWAP_H
26
27 #include <stdint.h>
28 #include "config.h"
29 #include "libavutil/attributes.h"
30
31 #define bswap_16 bswap_16
32 static av_always_inline av_const uint16_t bswap_16(uint16_t x)
33 {
34 __asm__("rorw $8, %0" : "+r"(x));
35 return x;
36 }
37
38 #define bswap_32 bswap_32
39 static av_always_inline av_const uint32_t bswap_32(uint32_t x)
40 {
41 // #if HAVE_BSWAP
42 __asm__("bswap %0" : "+r" (x));
43 // #else
44 // __asm__("rorw $8, %w0 \n\t"
45 // "rorl $16, %0 \n\t"
46 // "rorw $8, %w0"
47 // : "+r"(x));
48 // #endif
49 return x;
50 }
51
52 #if ARCH_X86_64
53 #define bswap_64 bswap_64
54 static inline uint64_t av_const bswap_64(uint64_t x)
55 {
56 __asm__("bswap %0": "=r" (x) : "0" (x));
57 return x;
58 }
59 #endif
60
61 #endif /* AVUTIL_X86_BSWAP_H */