azalia_mixer_from_device_value
mc->un.value.level[0] = azalia_mixer_from_device_value(this,
mc->un.value.level[1] = azalia_mixer_from_device_value
mc->un.value.level[0] = azalia_mixer_from_device_value(this,
mc->un.value.level[1] = azalia_mixer_from_device_value
u_char azalia_mixer_from_device_value(const codec_t *, nid_t, int, uint32_t );