__vdic_get_fmt
fmt = __vdic_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
infmt = __vdic_get_fmt(priv, sd_state, priv->active_input_pad,
fmt = __vdic_get_fmt(priv, sd_state, sdformat->pad, sdformat->which);
outfmt = __vdic_get_fmt(priv, sd_state, VDIC_SRC_PAD_DIRECT,