+ if (destination_curve == GAMMA_REC_709 || // And Rec. 601, and 10-bit Rec. 2020.
+ destination_curve == GAMMA_REC_2020_12_BIT) {
+ // Rec. 2020, page 3.
+ float alpha, beta;
+ if (destination_curve == GAMMA_REC_2020_12_BIT) {
+ alpha = 1.0993f;
+ beta = 0.0181f;
+ } else {
+ alpha = 1.099f;
+ beta = 0.018f;
+ }