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Code Issues Releases Activity

add AV_[RW][BL]64 support

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Originally committed as revision 8924 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Ivo van Poorten 2007-05-07 13:12:33 +00:00
parent 5fd5d0ef3a
commit 9e010b41e6
1 changed files with 54 additions and 0 deletions
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54
libavutil/intreadwrite.h
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@ -31,6 +31,7 @@ struct unaligned_16 { uint16_t l; } __attribute__((packed));
#define ST16(a, b) (((struct unaligned_16 *) (a))->l) = (b)
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#define ST64(a, b) (((struct unaligned_64 *) (a))->l) = (b)
#else /* __GNUC__ */
@ -40,6 +41,7 @@ struct unaligned_16 { uint16_t l; } __attribute__((packed));
#define ST16(a, b) *((uint16_t*)(a)) = (b)
#define ST32(a, b) *((uint32_t*)(a)) = (b)
#define ST64(a, b) *((uint64_t*)(a)) = (b)
#endif /* !__GNUC__ */
@ -129,4 +131,56 @@ struct unaligned_16 { uint16_t l; } __attribute__((packed));
((uint8_t*)(p))[3] = (d)>>24; }
#endif
#ifdef HAVE_FAST_UNALIGNED
# ifdef WORDS_BIGENDIAN
# define AV_RB64(x) LD64(x)
# define AV_WB64(p, d) ST64(p, d)
# define AV_RL64(x) bswap_64(LD64(x))
# define AV_WL64(p, d) ST64(p, bswap_64(d))
# else /* WORDS_BIGENDIAN */
# define AV_RB64(x) bswap_64(LD64(x))
# define AV_WB64(p, d) ST64(p, bswap_64(d))
# define AV_RL64(x) LD64(x)
# define AV_WL64(p, d) ST64(p, d)
# endif
#else /* HAVE_FAST_UNALIGNED */
#define AV_RB64(x) (((uint64_t)((uint8_t*)(x))[0] << 56) | \
((uint64_t)((uint8_t*)(x))[1] << 48) | \
((uint64_t)((uint8_t*)(x))[2] << 40) | \
((uint64_t)((uint8_t*)(x))[3] << 32) | \
((uint64_t)((uint8_t*)(x))[4] << 24) | \
((uint64_t)((uint8_t*)(x))[5] << 16) | \
((uint64_t)((uint8_t*)(x))[6] << 8) | \
(uint64_t)((uint8_t*)(x))[7])
#define AV_WB64(p, d) { \
((uint8_t*)(p))[7] = (d); \
((uint8_t*)(p))[6] = (d)>>8; \
((uint8_t*)(p))[5] = (d)>>16; \
((uint8_t*)(p))[4] = (d)>>24; \
((uint8_t*)(p))[3] = (d)>>32; \
((uint8_t*)(p))[2] = (d)>>40; \
((uint8_t*)(p))[1] = (d)>>48; \
((uint8_t*)(p))[0] = (d)>>56; }
#define AV_RL64(x) (((uint64_t)((uint8_t*)(x))[7] << 56) | \
((uint64_t)((uint8_t*)(x))[6] << 48) | \
((uint64_t)((uint8_t*)(x))[5] << 40) | \
((uint64_t)((uint8_t*)(x))[4] << 32) | \
((uint64_t)((uint8_t*)(x))[3] << 24) | \
((uint64_t)((uint8_t*)(x))[2] << 16) | \
((uint64_t)((uint8_t*)(x))[1] << 8) | \
(uint64_t)((uint8_t*)(x))[0])
#define AV_WL64(p, d) { \
((uint8_t*)(p))[0] = (d); \
((uint8_t*)(p))[1] = (d)>>8; \
((uint8_t*)(p))[2] = (d)>>16; \
((uint8_t*)(p))[3] = (d)>>24; \
((uint8_t*)(p))[4] = (d)>>32; \
((uint8_t*)(p))[5] = (d)>>40; \
((uint8_t*)(p))[6] = (d)>>48; \
((uint8_t*)(p))[7] = (d)>>56; }
#endif
#endif /* INTREADWRITE_H */