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Add LOCAL_ALIGNED() macro for declaring aligned local arrays 

Originally committed as revision 21864 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Måns Rullgård 2010-02-17 20:36:12 +00:00
parent 2480c390bd
commit d96cd42969
2 changed files with 18 additions and 0 deletions
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2
configure vendored
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@ -1035,6 +1035,8 @@ HAVE_LIST="
libdc1394_1
libdc1394_2
llrint
local_aligned_16
local_aligned_8
log2
log2f
loongson

16
libavcodec/dsputil.h
View File

@ -700,6 +700,22 @@ static inline void emms(void)
# define STRIDE_ALIGN 8
#endif
#define LOCAL_ALIGNED(a, t, v, s, ...) \
uint8_t la_##v[sizeof(t s __VA_ARGS__) + (a)]; \
t (*v) __VA_ARGS__ = (void *)FFALIGN((uintptr_t)la_##v, a)
#if HAVE_LOCAL_ALIGNED_8
# define LOCAL_ALIGNED_8((t, v, s, ...) DECLARE_ALIGNED_8(t, v) s __VA_ARGS__
#else
# define LOCAL_ALIGNED_8(t, v, s, ...) LOCAL_ALIGNED(8, t, v, s, __VA_ARGS__)
#endif
#if HAVE_LOCAL_ALIGNED_16
# define LOCAL_ALIGNED_16((t, v, s, ...) DECLARE_ALIGNED_16(t, v) s __VA_ARGS__
#else
# define LOCAL_ALIGNED_16(t, v, s, ...) LOCAL_ALIGNED(16, t, v, s, __VA_ARGS__)
#endif
/* PSNR */
void get_psnr(uint8_t *orig_image[3], uint8_t *coded_image[3],
int orig_linesize[3], int coded_linesize,