gsc_cal_prescaler_ratio
gsc_cal_prescaler_ratio(var, s_frame->crop.width, tx, wratio);
gsc_cal_prescaler_ratio(var, s_frame->crop.height, ty, hratio);
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.width,
ret = gsc_cal_prescaler_ratio(variant, s_frame->crop.height,
int gsc_cal_prescaler_ratio(struct gsc_variant *var, u32 src, u32 dst,