ffmpeg | branch: master | Michael Niedermayer <michael@niedermayer.cc> | Sun Jan 27 00:56:59 2019 +0100| [a53c4f3689996f6090078f36de32bce1744f395b] | committer: Michael Niedermayer avcodec/ffv1: Simplify update_vlc_state() About 0.5% faster Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=a53c4f3689996f6090...

libavcodec/ffv1.h | 14 ++++---------- 1 file changed, 4 insertions(+), 10 deletions(-) diff --git a/libavcodec/ffv1.h b/libavcodec/ffv1.h index 7c29d01f51..f0bb19350a 100644 --- a/libavcodec/ffv1.h +++ b/libavcodec/ffv1.h @@ -174,19 +174,13 @@ static inline void update_vlc_state(VlcState *const state, const int v) count++; if (drift <= -count) { - if (state->bias > -128) - state->bias--; + state->bias = FFMAX(state->bias - 1, -128); - drift += count; - if (drift <= -count) - drift = -count + 1; + drift = FFMAX(drift + count, -count + 1); } else if (drift > 0) { - if (state->bias < 127) - state->bias++; + state->bias = FFMIN(state->bias + 1, 127); - drift -= count; - if (drift > 0) - drift = 0; + drift = FFMIN(drift - count, 0); } state->drift = drift;