pub fn control_devnode(card_id: u32) -> Result<GString, Error>Expand description
Allocate string of devnode for control device of the sound card and return it if exists.
Nodes under sound subsystem in sysfs are used to gather the information.
§card_id
The numeric ID of sound card.
§Returns
true when the overall operation finishes successfully, else false.
§devnode
The string for devnode of control device for the sound card.