diff options
Diffstat (limited to 'libavutil/common.h')
| -rw-r--r-- | libavutil/common.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libavutil/common.h b/libavutil/common.h index 9fac1c0aa4..0797a79ac0 100644 --- a/libavutil/common.h +++ b/libavutil/common.h @@ -225,6 +225,15 @@ static inline av_const float av_clipf(float a, float amin, float amax) else return a; } +/** Computes ceil(log2(x)). + * @param x value used to compute ceil(log2(x)) + * @return computed ceiling of log2(x) + */ +static inline av_const int av_ceil_log2(int x) +{ + return av_log2((x - 1) << 1); +} + #define MKTAG(a,b,c,d) (a | (b << 8) | (c << 16) | (d << 24)) #define MKBETAG(a,b,c,d) (d | (c << 8) | (b << 16) | (a << 24)) |