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From: Brad Midgley <bmidgley@xmission.com>
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Subject: Re: [Bluez-devel] partly OT: pipe sound from Headset to soundcard
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Date: Thu, 27 Jan 2005 09:17:36 -0700

Your program would be an alsa client, copying from one alsa device to 
another. No btsco changes at all.

I don't know enough about how alsa works to know if you could just do it 
in asound.conf

Ben Pezzei wrote:
> Hi Brad,
> 
> Brad Midgley schrieb:
> 
>> I had the same thought.
>>
>> We have a way to send line in to a stereo headset but there is a 
>> delay. (see bluetooth-alsa.sf.net)
> 
> 
> Yeah, but this covers A2DP only, right?
> 
> Right now, I was trying to accomplish this via asound.conf:
> something like:
> pcm.foo {
>   type multi
>   <map soundcard>
>   <map headset>
> }
> pcm.bar {
>   type route
>   slave.pcm "bar"
>   <map channels card out -> hs in>
>   <map channels card in -> hs out>
> }
> 
> hope the idea is understandable
> 
> http://www.alsa-project.org/alsa-doc/alsa-lib/pcm_plugins.html#pcm_plugins_route 
> 
> 
> but I guess this won't work
> 
>> You could write something similar that runs in userspace and copies 
>> audio streams around using sco.
> 
> 
> C hacking? ;) well, if there is really no other way, i could
> try it. Are there some docs around to dig in or just the btsco
> sources?
> 
> greetings
> ben
> 
> 
> 
> 
> 
> 
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