From: Clemens Ladisch <clemens@ladisch.de>
To: Raymond Toy <rtoy@google.com>
Cc: alsa-devel@alsa-project.org
Subject: Re: Alsa timing question
Date: Tue, 30 Aug 2011 09:49:56 +0200 [thread overview]
Message-ID: <4E5C9624.6040405@ladisch.de> (raw)
In-Reply-To: <CAE3TgXHTshARnB8oYssGnU4gD1K1jCa2J-VX0OGhuqZ375RQAQ@mail.gmail.com>
Raymond Toy wrote:
>> However, if you're using the dmix plugin, the period size of your
>> application's device will not necessarily be identical with the period
>> size of the hardware device.
>
> Would dmix allow me to control this better than pulse audio?
These parameters must be chosen by dmix before the first dmix device is
used, so applications cannot control them directly.
The defaults for dmix's period_size, period_time, and periods are 1024,
-1, and 16. They can be overridden by setting the configuration values
defaults.dmix.DRIVER.period_size/period_time/periods, where DRIVER is
the internal driver name (the name between the colon and the hyphen in
/proc/asound/cards, or the file name in /usr/share/alsa/cards/).
Regards,
Clemens
next prev parent reply other threads:[~2011-08-30 7:49 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-25 0:10 Alsa timing question Raymond Toy
2011-08-25 7:15 ` Clemens Ladisch
2011-08-25 15:52 ` Raymond Toy
2011-08-26 8:02 ` Clemens Ladisch
2011-08-26 8:29 ` Olivier Guillion - Myriad
2011-08-26 15:56 ` Raymond Toy
2011-08-27 8:08 ` Olivier Guillion - Myriad
2011-08-27 9:15 ` Jassi Brar
2011-08-29 18:41 ` Raymond Toy
2011-08-29 20:24 ` Raymond Toy
2011-08-30 7:49 ` Clemens Ladisch [this message]
2011-08-30 19:04 ` Raymond Toy
2011-08-31 20:07 ` Clemens Ladisch
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