IMGU_SCALER_FIR_PHASES
(1 - IMGU_SCALER_TAPS_Y / 2) * IMGU_SCALER_FIR_PHASES -
IMGU_SCALER_FIR_PHASES / (2 * IMGU_SCALER_PHASES);
unsigned int arg2 = ((IMGU_SCALER_TAPS_Y / 2) * IMGU_SCALER_FIR_PHASES +
IMGU_SCALER_FIR_PHASES / (2 * IMGU_SCALER_PHASES)) *
IMGU_SCALER_FIR_PHASES + info->phase_step / 2;
return ((arg1 + (arg2 - IMGU_SCALER_FIR_PHASES * info->phase_step) /
IMGU_SCALER_FIR_PHASES) / (2 * IMGU_SCALER_FIR_PHASES)) * 2;