From: James Courtier-Dutton <James@superbug.co.uk>
To: Michel Benoit <murpme@gmail.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: alsa driver api
Date: Thu, 03 May 2007 05:07:02 +0100 [thread overview]
Message-ID: <46395FE6.7080803@superbug.co.uk> (raw)
In-Reply-To: <c88e466f0705021040p1166b247t864288e3355dc25c@mail.gmail.com>
Michel Benoit wrote:
> Hi
>
> Does anyone have some code examples that show how to send pcm samples
> directly to an alsa driver. I'm (still) having trouble building/using
> alsa-lib and I want to make sure that my driver works correctly. If I
> understand correctly it is possible to send sound samples using the
> alsa driver api only (no alsa-lib).
>
> All I want to do for now is send a fixed sine wave to the driver. I
> saw some code snippets that seemed to do just that in a recent email
> on this list but it would help a lot if I could have a look at the
> complete application.
>
> Thanks,
>
> Michel
There is an alsa tool already available to do the task.
It is called "speaker-test"
speaker-test -c2 -Dplug:front -twav (voices)
speaker-test -c2 -Dplug:front -tsine (sine wave)
speaker-test -c2 -Dplug:front -tpink (pink noise)
You can then use any device name you wish to test.
James
next prev parent reply other threads:[~2007-05-03 4:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-02 17:40 alsa driver api Michel Benoit
2007-05-03 4:07 ` James Courtier-Dutton [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-05-02 17:56 Ciaccia
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=46395FE6.7080803@superbug.co.uk \
--to=james@superbug.co.uk \
--cc=alsa-devel@alsa-project.org \
--cc=murpme@gmail.com \
/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.