AMIXER_LINEIN
amix_d = mixer->amixers[AMIXER_LINEIN*CHN_NUM];
amix_d = mixer->amixers[AMIXER_LINEIN*CHN_NUM+1];
case MIX_LINE_IN: return AMIXER_LINEIN;
case MIXER_LINEIN_P: return AMIXER_LINEIN;
case AMIXER_LINEIN: return AMIXER_LINEIN_C;