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move unaligned access macros to dsputil.h - added unaligned 32 bit store 

Originally committed as revision 687 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fabrice Bellard 2002-06-11 13:43:27 +00:00
parent 544eb99cbf
commit 6d4985bbdf
2 changed files with 19 additions and 15 deletions
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15
libavcodec/dsputil.c
View File

@ -252,21 +252,6 @@ void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size)
}
}
#ifdef __GNUC__
struct unaligned_64 { uint64_t l; } __attribute__((packed));
struct unaligned_32 { uint32_t l; } __attribute__((packed));
#define LD32(a) (((const struct unaligned_32 *) (a))->l)
#define LD64(a) (((const struct unaligned_64 *) (a))->l)
#else /* __GNUC__ */
#define LD32(a) (*((uint32_t*)(a)))
#define LD64(a) (*((uint64_t*)(a)))
#endif /* !__GNUC__ */
#if 0
#define PIXOP2(OPNAME, OP) \

19
libavcodec/dsputil.h
View File

@ -168,6 +168,25 @@ void dsputil_init_alpha(void);
#endif
#ifdef __GNUC__
struct unaligned_64 { uint64_t l; } __attribute__((packed));
struct unaligned_32 { uint32_t l; } __attribute__((packed));
#define LD32(a) (((const struct unaligned_32 *) (a))->l)
#define LD64(a) (((const struct unaligned_64 *) (a))->l)
#define ST32(a, b) (((struct unaligned_32 *) (a))->l) = (b)
#else /* __GNUC__ */
#define LD32(a) (*((uint32_t*)(a)))
#define LD64(a) (*((uint64_t*)(a)))
#define ST32(a, b) *((uint32_t*)(a)) = (b)
#endif /* !__GNUC__ */
/* PSNR */
void get_psnr(UINT8 *orig_image[3], UINT8 *coded_image[3],
int orig_linesize[3], int coded_linesize,