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| author | Ronald S. Bultje <rsbultje@gmail.com> | 2010-06-22 19:15:27 +0000 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2010-06-22 19:15:27 +0000 |
| commit | b39a2d19d4d59d21ae1d0413e0e9ca0e08f2d1e9 (patch) | |
| tree | 1568913688f02d0a89b51fc87188b62cda01dfb0 | |
| parent | caaf098cec5fb1860de88f46cb6342b1c71b0994 (diff) | |
| download | ffmpeg-b39a2d19d4d59d21ae1d0413e0e9ca0e08f2d1e9.tar.gz | |
Add a macro to pack 4 bytes into native byte-order so they can be written
at once using a single 32-bit store.
Originally committed as revision 23715 to svn://svn.ffmpeg.org/ffmpeg/trunk
| -rw-r--r-- | libavcodec/mathops.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/mathops.h b/libavcodec/mathops.h index df692fdfd3..917112b86e 100644 --- a/libavcodec/mathops.h +++ b/libavcodec/mathops.h @@ -146,5 +146,13 @@ if ((y) < (x)) {\ # define NEG_USR32(a,s) (((uint32_t)(a))>>(32-(s))) #endif +#ifndef PACK4x8 +# if HAVE_BIGENDIAN +# define PACK4x8(a,b,c,d) (((a) << 24) | ((b) << 16) | ((c) << 8) | (d)) +# else +# define PACK4x8(a,b,c,d) (((d) << 24) | ((c) << 16) | ((b) << 8) | (a)) +# endif +#endif + #endif /* AVCODEC_MATHOPS_H */ |