Hi,
As mentioned in your source code that for gamma function the vales of defog, kneeLow, kneeHigh and  gamma are fixed for conversion to (unsigned char) preview R, G, B and alpha. But what if I want to store the values of R, G, B and alpha in unsigned short data type? What will be the value of gamma, defog, exposure, kneeLow, kneeHigh and clamp?