From: Tim Chick <chick@computergeek.freeserve.co.uk>
To: bluez-devel@lists.sourceforge.net
Date: Tue, 15 May 2007 22:20:57 +0100
References: <5b9417770705141014w20611f52v50526f928501803c@mail.gmail.com>
	<200705150200.43977.bluez-devel@huitl.de>
	<200705152222.11641.bluez-devel@huitl.de>
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Subject: Re: [Bluez-devel] skype and bluetooth
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On Tuesday 15 May 2007 21:22, Robert Huitl wrote:
> Okay after some debugging I know what the problem is.
> 2.) Offering more sampling rates than 8 kHz would be nice to have, but I'm
> not familiar with the design philosophies around ALSA. It's probably not a
> good idea to implement resampling in each and every sound plugin like
> pcm_sco. Does ALSA have some resampling facilities that can be plugged in
> between an application and a plugin? Maybe some magic lines in .asoundrc?
>
I do this with a2dp, I'm sure the same could apply to sco.
I use an .asoundrc file which looks like this:

pcm.a2dpd {
=A0=A0=A0=A0=A0=A0=A0=A0type a2dpd
}

pcm.rs0 {
=A0=A0=A0=A0=A0=A0=A0=A0type plug
=A0=A0=A0=A0=A0=A0=A0=A0slave {
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0pcm "a2dpd"
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0rate 44100
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0format S16_LE
=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0channels 2
=A0=A0=A0=A0=A0=A0=A0=A0}
}

pcm.!default {
=A0=A0=A0=A0=A0=A0=A0=A0type plug
=A0=A0=A0=A0=A0=A0=A0=A0slave.pcm "rs0"
}

----

It will resample the audio given to the a2dp plugin so it is always 44.1kHz.

Cheers,
Tim


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