[Bluez-devel] Re:Advanced Audio Distribution Profile for BlueZ

[Bluez-devel] Re:Advanced Audio Distribution Profile for BlueZ

[javier labella]

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  Fecha: Wed, 3 May 2006 18:18:27 +0200 (CEST)
De: javier labella <javi_labella@yahoo.es>
Asunto: Re:Advanced Audio Distribution Profile for 
Bluez
Para: bluez-devel@lists.sourceforge.net


>We have implemented some a2dp already. See bluetooth-alsa.sf.net. There
>is still plenty to do, if you want to help integrate it with gstreamer
>for example.

>I think it's not totally clear how the a2dp profile gets "integrated"
>since it really looks more like a bluez client that belongs in one or
>more multimedia frameworks.

>Brad

Hi,
I've visited bluetooth-alsa.sf.net and the project is very interesting but I think that the profile's implementation is based on SCO channels. If I'm making a mistake I apologize for it. On the other hand, I've read the A2DP profile specification and I think that an implementation should uses ACL channels: "The Advanced Audio Distribution Profile (A2DP) defines the protocols and procedures that realize distribution of audio content of high-quality in mono or stereo on ACL channels (Introduction of Advanced Audio Distribution Profile Specification)" So I'd like to develop an implementation using ACL channels instead of SCO channels.

I'd like to know if you're interested in include this implementation in the BlueZ stack too.  
Thanks.

Javier.
  


		
---------------------------------

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Llamadas a fijos y móviles desde 1 céntimo por minuto.
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Re: [Bluez-devel] Re:Advanced Audio Distribution Profile for BlueZ

[Mayank Batra]

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Javier,

I think that you did not read the page bluetooth-alsa.sf.net completely.
Both SCO and ACL implementations have been done.
Maybe you can add some new feature to the existing A2DP. (a2play or
pcm_a2dp).
I think support for the mp3 codec (making a choice at run time between SBC
and MP3 codec) could be handy.
Also, the A2DP spec mentions briefly about RTP. Nobody has looked into that
till now.

Regards
Mayank


On 5/8/06, javier labella <javi_labella@yahoo.es> wrote:
>
>
>
> Fecha: Wed, 3 May 2006 18:18:27 +0200 (CEST)
> De: javier labella <javi_labella@yahoo.es>
> Asunto: Re:Advanced Audio Distribution Profile for
> Bluez
> Para: bluez-devel@lists.sourceforge.net
>
> >We have implemented some a2dp already. See bluetooth-alsa.sf.net. There
> >is still plenty to do, if you want to help integrate it with gstreamer
> >for example.
>
> >I think it's not totally clear how the a2dp profile gets "integrated"
> >since it really looks more like a bluez client that belongs in one or
> >more multimedia frameworks.
>
> >Brad
>
>
> Hi,
> I've visited bluetooth-alsa.sf.net and the project is very interesting but
> I think that the profile's implementation is based on SCO channels. If I'm
> making a mistake I apologize for it. On the other hand, I've read the A2DP
> profile specification and I think that an implementation should uses ACL
> channels: "The Advanced Audio Distribution Profile (A2DP) defines the
> protocols and procedures that realize distribution of audio content of
> high-quality in mono or stereo on ACL channels (Introduction of Advanced
> Audio Distribution Profile Specification)" So I'd like to develop an
> implementation using ACL channels instead of SCO channels.
>
> I'd like to know if you're interested in include this implementation in
> the BlueZ stack too.
> Thanks.
>
>
> Javier.
>
>
>  ------------------------------
>
> LLama Gratis a cualquier PC del Mundo.
> Llamadas a fijos y móviles desde 1 céntimo por minuto.
> http://es.voice.yahoo.com<http://us.rd.yahoo.com/mail/es/tagline/messenger/*http://es.voice.yahoo.com/>
>
>

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Re: [Bluez-devel] Re:Advanced Audio Distribution Profile for BlueZ

[Brad Midgley]

javier

>     I've visited bluetooth-alsa.sf.net and the project is very
>     interesting but I think that the profile's implementation is based
>     on SCO channels. If I'm making a mistake I apologize for it. On the
>     other hand, I've read the A2DP profile specification and I think
>     that an implementation should uses ACL channels

it may not be all that clear but the project has two parts, sco and a2dp.

an a2dp stream can be sent to a stereo headset using the application
a2play. there are also some test apps for avrcp in av*.c in case that's
interesting to you.

brad


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