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lagarith: Correctly compute hash_shift

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All the values are unsigned.

Bug-Id: 907
CC: libav-stable@libav.org

Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
This commit is contained in:
Luca Barbato 2015-11-01 14:46:17 +01:00
parent 1e7ff5ac69
commit 0b699920f3
1 changed files with 1 additions and 1 deletions
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libavcodec/lagarithrac.c
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@ -45,7 +45,7 @@ void ff_lag_rac_init(lag_rac *l, GetBitContext *gb, int length)
l->range = 0x80;
l->low = *l->bytestream >> 1;
l->hash_shift = FFMAX(l->scale - 8, 0);
l->hash_shift = FFMAX(l->scale, 8) - 8;
for (i = j = 0; i < 256; i++) {
unsigned r = i << l->hash_shift;