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Index must be positive to prevent endless loop on bad data 

Based on an idea by iive


git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@13337 b3059339-0415-0410-9bf9-f77b7e298cf2
This commit is contained in:
rtognimp 2004-09-14 21:02:19 +00:00
parent 6f9cd1674c
commit 7cd4d089be
1 changed files with 6 additions and 6 deletions
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12
mp3lib/layer2.c
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@ -80,12 +80,12 @@ static void II_step_one(unsigned int *bit_alloc,int *scale,struct frame *fr)
bita = bit_alloc; bita = bit_alloc;
if(stereo) if(stereo)
{ {
for (i=jsbound;i;i--,alloc1+=(1<<step)) for (i=jsbound;i>0;i--,alloc1+=(1<<step))
{ {
*bita++ = (char) getbits(step=alloc1->bits); *bita++ = (char) getbits(step=alloc1->bits);
*bita++ = (char) getbits(step); *bita++ = (char) getbits(step);
} }
for (i=sblimit-jsbound;i;i--,alloc1+=(1<<step)) for (i=sblimit-jsbound;i>0;i--,alloc1+=(1<<step))
{ {
bita[0] = (char) getbits(step=alloc1->bits); bita[0] = (char) getbits(step=alloc1->bits);
bita[1] = bita[0]; bita[1] = bita[0];
@ -93,24 +93,24 @@ static void II_step_one(unsigned int *bit_alloc,int *scale,struct frame *fr)
} }
bita = bit_alloc; bita = bit_alloc;
scfsi=scfsi_buf; scfsi=scfsi_buf;
for (i=sblimit2;i;i--) for (i=sblimit2;i>0;i--)
if (*bita++) if (*bita++)
*scfsi++ = (char) getbits_fast(2); *scfsi++ = (char) getbits_fast(2);
} }
else /* mono */ else /* mono */
{ {
for (i=sblimit;i;i--,alloc1+=(1<<step)) for (i=sblimit;i>0;i--,alloc1+=(1<<step))
*bita++ = (char) getbits(step=alloc1->bits); *bita++ = (char) getbits(step=alloc1->bits);
bita = bit_alloc; bita = bit_alloc;
scfsi=scfsi_buf; scfsi=scfsi_buf;
for (i=sblimit;i;i--) for (i=sblimit;i>0;i--)
if (*bita++) if (*bita++)
*scfsi++ = (char) getbits_fast(2); *scfsi++ = (char) getbits_fast(2);
} }
bita = bit_alloc; bita = bit_alloc;
scfsi=scfsi_buf; scfsi=scfsi_buf;
for (i=sblimit2;i;i--) for (i=sblimit2;i>0;i--)
if (*bita++) if (*bita++)
switch (*scfsi++) switch (*scfsi++)
{ {