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More negative bits prevention

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This commit is contained in:
Jean-Marc Valin 2010-12-14 15:02:21 -05:00
parent dcacb73c33
commit fa50d3ac34
1 changed files with 10 additions and 4 deletions
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14
libcelt/rate.c
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@ -207,11 +207,17 @@ static inline int interp_bits2pulses(const CELTMode *m, int start, int end,
}
for (i=0;i<*skip;i++)
{
if (bits[codedBands-1] >= C<<BITRES)
int alloc_floor;
if (C==2)
alloc_floor = 4<<BITRES; /* Fine energy plus intensity stereo */
else
alloc_floor = 1<<BITRES;
if (bits[codedBands-1] >= alloc_floor)
{
psum = psum - bits[codedBands-1] + alloc_floor;
bits[codedBands-1] = alloc_floor;
} else if (bits[codedBands-1] < C<<BITRES)
{
psum = psum - bits[codedBands-1] + ((C+1)<<BITRES);
bits[codedBands-1] = C<<BITRES;
} else {
psum = psum - bits[codedBands-1];
bits[codedBands-1] = 0;
}