diff options
| author | Fabrice Bellard <fabrice@bellard.org> | 2002-05-26 15:24:32 +0000 |
|---|---|---|
| committer | Fabrice Bellard <fabrice@bellard.org> | 2002-05-26 15:24:32 +0000 |
| commit | 74fc99894bc20673c2dfc87476b6d33db99220e3 (patch) | |
| tree | 9239aeedd5add160b2fbfc168f83f862b1357a7c /libavcodec/bswap.h | |
| parent | b13788c53fd9666ad11cec9fd89e1027ce0ca841 (diff) | |
| download | ffmpeg-74fc99894bc20673c2dfc87476b6d33db99220e3.tar.gz | |
don't use inttypes.h - use inline function for bswap_64()
Originally committed as revision 608 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/bswap.h')
| -rw-r--r-- | libavcodec/bswap.h | 38 |
1 files changed, 15 insertions, 23 deletions
diff --git a/libavcodec/bswap.h b/libavcodec/bswap.h index 767848e614..bdc8212aee 100644 --- a/libavcodec/bswap.h +++ b/libavcodec/bswap.h @@ -5,7 +5,6 @@ #include <byteswap.h> #else -#include <inttypes.h> /* for __WORDSIZE */ #ifdef ARCH_X86 inline static unsigned short ByteSwap16(unsigned short x) { @@ -34,8 +33,8 @@ inline static unsigned int ByteSwap32(unsigned int x) inline static unsigned long long int ByteSwap64(unsigned long long int x) { - register union { __extension__ unsigned long long int __ll; - unsigned long int __l[2]; } __x; + register union { __extension__ uint64_t __ll; + uint32_t __l[2]; } __x; asm("xchgl %0,%1": "=r"(__x.__l[0]),"=r"(__x.__l[1]): "0"(bswap_32((unsigned long)x)),"1"(bswap_32((unsigned long)(x>>32)))); @@ -53,26 +52,19 @@ inline static unsigned long long int ByteSwap64(unsigned long long int x) ((((x) & 0xff000000) >> 24) | (((x) & 0x00ff0000) >> 8) | \ (((x) & 0x0000ff00) << 8) | (((x) & 0x000000ff) << 24)) -#if __WORDSIZE >= 64 -# define bswap_64(x) \ - ((((x) & 0xff00000000000000ull) >> 56) \ - | (((x) & 0x00ff000000000000ull) >> 40) \ - | (((x) & 0x0000ff0000000000ull) >> 24) \ - | (((x) & 0x000000ff00000000ull) >> 8) \ - | (((x) & 0x00000000ff000000ull) << 8) \ - | (((x) & 0x0000000000ff0000ull) << 24) \ - | (((x) & 0x000000000000ff00ull) << 40) \ - | (((x) & 0x00000000000000ffull) << 56)) -#else -#define bswap_64(x) \ - (__extension__ \ - ({ union { __extension__ unsigned long long int __ll; \ - unsigned long int __l[2]; } __w, __r; \ - __w.__ll = (x); \ - __r.__l[0] = bswap_32 (__w.__l[1]); \ - __r.__l[1] = bswap_32 (__w.__l[0]); \ - __r.__ll; })) -#endif +inline static uint64_t ByteSwap64(uint64_t x) +{ + union { + uint64_t ll; + uint32_t l[2]; + } w, r; + w.ll = x; + r.l[0] = bswap_32 (w.l[1]); + r.l[1] = bswap_32 (w.l[0]); + return r.ll; +} +#define bswap_64(x) ByteSwap64(x) + #endif /* !ARCH_X86 */ #endif /* !HAVE_BYTESWAP_H */ |