From: Clemens Ladisch <clemens@ladisch.de>
To: Tobias Schneider <tobsnyder@gmx.de>
Cc: alsa-devel@alsa-project.org
Subject: Re: ALSA Control Questions (atomicity, error handling)
Date: Fri, 04 Dec 2009 13:33:17 +0100 [thread overview]
Message-ID: <4B19018D.4040000@ladisch.de> (raw)
In-Reply-To: <4B18D6DA.6070809@gmx.de>
Tobias Schneider wrote:
> Another point: I figured out that the "ALSA middlelayer" seems to filter
> the given values of a control. So if the user sets value=1000 where
> maximum is 10, I will get 10 instead of 1000 in the put callback...so
> it's not necessary to check values in those callbacks,
It is, because it is possible to use low-level ALSA functions or to call
the IOCTLs directly, and in this way arbitrary values can reach your
driver's put callback.
Best regards,
Clemens
prev parent reply other threads:[~2009-12-04 12:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-03 18:30 ALSA Control Questions Tobias Schneider
2009-12-03 19:50 ` Daniel Mack
2009-12-04 9:31 ` ALSA Control Questions (atomicity, error handling) Tobias Schneider
2009-12-04 11:27 ` Daniel Mack
2009-12-04 11:34 ` Daniel Mack
2009-12-04 12:02 ` Tobias Schneider
2009-12-04 12:06 ` Daniel Mack
2009-12-04 12:33 ` Clemens Ladisch [this message]
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=4B19018D.4040000@ladisch.de \
--to=clemens@ladisch.de \
--cc=alsa-devel@alsa-project.org \
--cc=tobsnyder@gmx.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