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| author | Justin Ruggles <justin.ruggles@gmail.com> | 2013-09-16 10:11:32 -0400 |
|---|---|---|
| committer | Justin Ruggles <justin.ruggles@gmail.com> | 2013-09-18 14:10:05 -0400 |
| commit | 9ae53c5860e17d087642d27b00dade071970a2e7 (patch) | |
| tree | 66fd6a1fe897728ea1a363730ca1fcda2554846e /libavcodec/mathops.h | |
| parent | 5626f994f273af80fb100d4743b963304de9e05c (diff) | |
| download | ffmpeg-9ae53c5860e17d087642d27b00dade071970a2e7.tar.gz | |
lavc: add ff_u8_to_s8() for safe type punning of uint8_t to int8_t
Diffstat (limited to 'libavcodec/mathops.h')
| -rw-r--r-- | libavcodec/mathops.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libavcodec/mathops.h b/libavcodec/mathops.h index 8a2ce90d6a..6c216c25dc 100644 --- a/libavcodec/mathops.h +++ b/libavcodec/mathops.h @@ -224,4 +224,14 @@ static inline av_const unsigned int ff_sqrt(unsigned int a) return b - (a < b * b); } +static inline int8_t ff_u8_to_s8(uint8_t a) +{ + union { + uint8_t u8; + int8_t s8; + } b; + b.u8 = a; + return b.s8; +} + #endif /* AVCODEC_MATHOPS_H */ |