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vc1: Fix intensity compensation performance regression

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Introduced by 28243b0d35

Intensity compensation is always used once it was encountered, because
v->next_use_ic is never set back to zero.

Reset v->next_use_ic, when resetting v->next_luty/uv.

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Mason Carter 2013-12-21 17:27:18 -08:00 committed by Luca Barbato
parent 7398e0516f
commit 61ae993957
1 changed files with 4 additions and 0 deletions
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4
libavcodec/vc1.c
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@ -614,6 +614,10 @@ static void rotate_luts(VC1Context *v)
INIT_LUT(32, 0, v->curr_luty[0], v->curr_lutuv[0], 0);
INIT_LUT(32, 0, v->curr_luty[1], v->curr_lutuv[1], 0);
v->curr_use_ic = 0;
if (v->curr_luty == v->next_luty) {
// If we just initialized next_lut, clear next_use_ic to match.
v->next_use_ic = 0;
}
}
int ff_vc1_parse_frame_header(VC1Context *v, GetBitContext* gb)