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| author | Nick Kurshev <nickols_k@mail.ru> | 2002-05-26 09:45:45 +0000 |
|---|---|---|
| committer | Nick Kurshev <nickols_k@mail.ru> | 2002-05-26 09:45:45 +0000 |
| commit | bbdadbda05a2ade237b70c66db74c41d5a700cb3 (patch) | |
| tree | b3097ca414cd9c7e85d9f19c94c59fc7159aeec9 /libavcodec/bswap.h | |
| parent | 3120d2a265553a87213eaf1bef1837af90f3fdc6 (diff) | |
| download | ffmpeg-bbdadbda05a2ade237b70c66db74c41d5a700cb3.tar.gz | |
untested generic bswap64
Originally committed as revision 603 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/bswap.h')
| -rw-r--r-- | libavcodec/bswap.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libavcodec/bswap.h b/libavcodec/bswap.h index af80e507f6..767848e614 100644 --- a/libavcodec/bswap.h +++ b/libavcodec/bswap.h @@ -5,6 +5,7 @@ #include <byteswap.h> #else +#include <inttypes.h> /* for __WORDSIZE */ #ifdef ARCH_X86 inline static unsigned short ByteSwap16(unsigned short x) { @@ -52,6 +53,17 @@ 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; \ @@ -60,6 +72,7 @@ inline static unsigned long long int ByteSwap64(unsigned long long int x) __r.__l[0] = bswap_32 (__w.__l[1]); \ __r.__l[1] = bswap_32 (__w.__l[0]); \ __r.__ll; })) +#endif #endif /* !ARCH_X86 */ #endif /* !HAVE_BYTESWAP_H */ |