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Fixes rare overflow in intra_decision()

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This commit is contained in:
Jean-Marc Valin 2010-09-14 16:06:22 -04:00
parent 3c15659c39
commit ba760bc525
1 changed files with 2 additions and 2 deletions
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4
libcelt/quant_bands.c
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@ -74,11 +74,11 @@ static int intra_decision(const celt_word16 *eBands, celt_word16 *oldEBands, int
{
for (i=start;i<end;i++)
{
celt_word16 d = SUB16(eBands[i+c*len], oldEBands[i+c*len]);
celt_word16 d = SHR16(SUB16(eBands[i+c*len], oldEBands[i+c*len]),1);
dist = MAC16_16(dist, d,d);
}
}
return SHR32(dist,2*DB_SHIFT) > 2*C*(end-start);
return SHR32(dist,2*DB_SHIFT-2) > 2*C*(end-start);
}
#ifndef STATIC_MODES