Dream Chip ATOM one SSM500, Reference Manual

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10.11 post_bright <offset>
Set post processing brightness.
Y_out = Y + offset
Neutral value is 0.
Value Reset Minimal Maximal
offset 0 -128 127
10.12 post_cont <factor>
Set post processing contrast.
Y_out = Y * factor / 128
Neutral value is 128.
Value Reset Minimal Maximal
factor 128 0 255
Example Pseudo Code:
float contrast = 1.23f;
float c = contrast * 128.0f;
// c = 157.44
int value = (int) round( c ); // value = 157
# post_cont 157
10.13 post_sat <factor>
Set post processing color saturation.
Cb,r_out = Cb,r * factor / 128
Neutral value is 128.
Value Reset Minimal Maximal
value 128 0 255
Example Pseudo Code:
float saturation = 1.23f;
float s = saturation * 128.0f;
// s = 157.44
int value = (int) round( s ); // value = 157
# post_sat 157
10.14 post_hue <offset>
Set post processing color hue offset angle.