The commit fixes a minor error in 16 point fdct where in a rotation can
produce result of -1 instead of 0.
Change-Id: I45aac4a52bcd06225c6d04e643547a13e1c1aade
output[15] = (intermediate[11] + intermediate[12] + output_rounding)
>> output_shift;
- output[ 1] = -(intermediate[11] - intermediate[12] + output_rounding)
+ output[ 1] = (intermediate[12] - intermediate[11] + output_rounding)
>> output_shift;
output[ 7] = (2 * (intermediate[13] * C8) + final_rounding) >> final_shift;