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avcodec/ffv1: Simplify update_vlc_state()

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About 0.5% faster

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-01-27 00:56:59 +01:00
parent 5d0139d5f0
commit a53c4f3689
1 changed files with 4 additions and 10 deletions
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14
libavcodec/ffv1.h
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@ -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;