Manages controls exported by the driver, such as volume adjustments, mute, and routing.
Handles the streaming of audio data, essential for recording and playback. The ALSA Driver API
The root of the ALSA driver, representing the physical or virtual soundcard. Manages controls exported by the driver, such as
Components attached to a snd_card , such as PCM, Mixer (control), or MIDI interfaces. Manages controls exported by the driver