MIX_WAVE_FRONT
mixer->get_output_ports(mixer, MIX_WAVE_FRONT, &rscs[0], &rscs[1]);
for (i = MIX_WAVE_FRONT, j = LINEO1; i <= MIX_SPDIF_OUT; i++, j++) {
case MIX_WAVE_FRONT: return AMIXER_WAVE_F;