[alsa-devel] Getting notification of sound card load

Hi,

I'd like to get a notification when a new sound card becomes available in my system. What's the best way to do that?

For example, when I 'cat /proc/asound/cards' I usually see one sound card available. But if I plug in USB speakers to my system and then run 'cat /proc/asound/cards', I see that the USB sound card is ready for the device I just plugged in.

What's the best way via C API to get a notification that a new card has been loaded? Is there a better way that looking for changes on /proc/asound/cards?

Thanks, Mina