From: Pavel Hofman <pavel.hofman@ivitera.com>
To: ALSA development <alsa-devel@alsa-project.org>
Subject: Direct use of the DMA buffer?
Date: Mon, 20 Feb 2012 00:11:43 +0100 [thread overview]
Message-ID: <4F4181AF.1060303@ivitera.com> (raw)
Hello,
Please excuse my ignorance, but is it possible for an application to
directly use/output to the DMA buffer allocated by the kernel in
hw_params? Something like using the actual DMA buffer in the
snd_pcm_writei function, without copying the data in alsa-lib/driver PCM
midle layer (?), just managing the pointers.
Only a theoretical question though, no plans on my side :)
Thanks a lot for even a short No :-)
Best regards,
Pavel.
next reply other threads:[~2012-02-19 23:11 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-19 23:11 Pavel Hofman [this message]
2012-02-20 8:11 ` Direct use of the DMA buffer? Clemens Ladisch
2012-02-20 8:38 ` Pavel Hofman
[not found] ` <4F4210A6.8010902@perex.cz>
2012-02-20 9:22 ` Jaroslav Kysela
2012-02-20 9:25 ` Pavel Hofman
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=4F4181AF.1060303@ivitera.com \
--to=pavel.hofman@ivitera.com \
--cc=alsa-devel@alsa-project.org \
/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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.