Re: How to identify Alsa eLements?

On Fri, Jul 03, 2020 at 09:34:20AM +0900, Takashi Sakamoto wrote:

...

My questions:

1. Are name and index enough to identify an element?

In ALSA control core, 'snd_ctl_find_id()' helper function[1] is used to find control element set by the given information from userspace application. You can see the algorithm supports two cases:

1. numid matching
2. the combination matching with:

• iface
• device
• subdevice
• name
• index is within the range of set

I sent PR[1] to update the documentation in alsa-lib.

[1] https://github.com/alsa-project/alsa-lib/pull/66

Regards

Takashi Sakamoto