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Use an intermediate variable for overflow testing

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Originally committed as revision 13283 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Vitor Sessak 2008-05-24 16:38:48 +00:00
parent 84490b744e
commit 13b6729361
1 changed files with 5 additions and 2 deletions
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7
libavcodec/ra144.c
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@ -154,19 +154,22 @@ static void final(const short *i1, const short *i2,
for (i=0; i<len; i++) {
int sum = 0;
int new_val;
for(x=0; x<10; x++)
sum += i1[9-x] * ptr[x];
sum >>= 12;
if (ptr[10] - sum < -32768 || ptr[10] - sum > 32767) {
new_val = ptr[10] - sum;
if (new_val < -32768 || new_val > 32767) {
memset(out, 0, len * 2);
memset(statbuf, 0, 20);
return;
}
ptr[10] -= sum;
ptr[10] = new_val;
ptr++;
}