From: Clemens Ladisch <clemens@ladisch.de>
To: Daniel Mack <daniel@caiaq.de>
Cc: alsa-devel <alsa-devel@alsa-project.org>
Subject: Re: Wrong sample rate user space -> kernel space?
Date: Tue, 07 Jul 2009 17:10:00 +0200 [thread overview]
Message-ID: <4A536548.70300@ladisch.de> (raw)
In-Reply-To: <20090707142942.GV18340@buzzloop.caiaq.de>
Daniel Mack wrote:
> On a PXA embedded board, the sample rate propagation from user space to
> kernel space seems to be wrong.
>
> When I start aplay (v1.0.19) from userspace like this ...
>
> # aplay -f dat /dev/urandom
> Playing raw data '/dev/urandom' : Signed 16 bit Little Endian, Rate 48000 Hz, Stereo
>
> ... params_rate(params) in my snd_soc_ops .hw_params callback returns
> 88200, not 48000.
It might be possible that userspace converts the sample rate because it
thinks that the driver doesn't support 48 kHz.
Is there a converter plugin in the output of "aplay -f dat -v /dev/urandom"?
Best regards,
Clemens
next prev parent reply other threads:[~2009-07-07 15:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-07 14:29 Wrong sample rate user space -> kernel space? Daniel Mack
2009-07-07 15:10 ` Clemens Ladisch [this message]
2009-07-07 15:24 ` Daniel Mack
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