* - playback control device name
* - PlaybackVolume
* - playback control volume ID string
+ * - can be parsed using snd_use_case_parse_ctl_elem_id()
* - PlaybackSwitch
* - playback control switch ID string
+ * - can be parsed using snd_use_case_parse_ctl_elem_id()
* - CaptureRate
* - capture device sample rate
* - CaptureChannels
* - capture control device name
* - CaptureVolume
* - capture control volume ID string
+ * - can be parsed using snd_use_case_parse_ctl_elem_id()
* - CaptureSwitch
* - capture control switch ID string
+ * - can be parsed using snd_use_case_parse_ctl_elem_id()
* - PlaybackMixer
* - name of playback mixer
* - PlaybackMixerID
* - mixer playback ID
+ * - can be parsed using snd_use_case_parse_selem_id()
* - CaptureMixer
* - name of capture mixer
* - CaptureMixerID
+ * - can be parsed using snd_use_case_parse_selem_id()
* - mixer capture ID
* - JackControl, JackDev, JackHWMute
* - Jack information for a device. The jack status can be reported via