[alsa-devel] [RFC][PATCH 0/2] ALSA: control: limit life time of user-defined element set

Clemens Ladisch clemens at ladisch.de
Tue Sep 6 08:28:20 CEST 2016


Takashi Sakamoto wrote:
> When detecting some audio and music units on IEEE 1394 bus, the daemon
> program adds some element sets and start listening to them. If ALSA
> control applications changes state of elements in the element sets,
> the daemon catches the event and configure these units by hardware-
> specific ways.

If these controls are removed when the daemon exits, the normal alsactl
mechanism of saving/restoring does not work.

I guess the reason for removing the controls is to avoid the case that
they are non-functional if the daemon is not running?


Regards,
Clemens


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