From: Takashi Sakamoto <o-takashi@sakamocchi.jp>
To: Tanjeff Moos <tanjeff@cccmz.de>, alsa-devel@alsa-project.org
Subject: Re: How to identify Alsa eLements?
Date: Fri, 3 Jul 2020 09:48:50 +0900 [thread overview]
Message-ID: <20200703004850.GB349540@workstation> (raw)
In-Reply-To: <20200703003420.GA349540@workstation>
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
next prev parent reply other threads:[~2020-07-03 0:49 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-02 20:05 How to identify Alsa eLements? Tanjeff Moos
2020-07-03 0:34 ` Takashi Sakamoto
2020-07-03 0:48 ` Takashi Sakamoto [this message]
2020-07-03 6:16 ` Tanjeff Moos
2020-07-03 8:53 ` Takashi Sakamoto
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200703004850.GB349540@workstation \
--to=o-takashi@sakamocchi.jp \
--cc=alsa-devel@alsa-project.org \
--cc=tanjeff@cccmz.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox