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avcodec/rangecoder: only perform renorm check/loop for callers that need it

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Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2024-10-16 14:39:20 +02:00
parent 67adb30322
commit d147b3d7ec
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GPG key ID: B18E8928B3948D64
1 changed files with 2 additions and 3 deletions
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5
libavcodec/rangecoder.h
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@ -62,7 +62,6 @@ void ff_build_rac_states(RangeCoder *c, int factor, int max_p);
static inline void renorm_encoder(RangeCoder *c) static inline void renorm_encoder(RangeCoder *c)
{ {
// FIXME: optimize // FIXME: optimize
while (c->range < 0x100) {
if (c->outstanding_byte < 0) { if (c->outstanding_byte < 0) {
c->outstanding_byte = c->low >> 8; c->outstanding_byte = c->low >> 8;
} else if (c->low <= 0xFF00) { } else if (c->low <= 0xFF00) {
@ -81,7 +80,6 @@ static inline void renorm_encoder(RangeCoder *c)
c->low = (c->low & 0xFF) << 8; c->low = (c->low & 0xFF) << 8;
c->range <<= 8; c->range <<= 8;
}
} }
static inline int get_rac_count(RangeCoder *c) static inline int get_rac_count(RangeCoder *c)
@ -108,7 +106,8 @@ static inline void put_rac(RangeCoder *c, uint8_t *const state, int bit)
*state = c->one_state[*state]; *state = c->one_state[*state];
} }
renorm_encoder(c); while (c->range < 0x100)
renorm_encoder(c);
} }
static inline void refill(RangeCoder *c) static inline void refill(RangeCoder *c)