[Bluez-devel] Re: [kde-bluetooth] Re: Re: How can I add a new bluetooth service ?

[Bluez-devel] Re: [kde-bluetooth] Re: Re: How can I add a new bluetooth service ?

[Paul Ionescu]

Hi Fred,

I used the headset with a lot of alsa apps like
gnomemeeting, mplayer, aso, and non alsa apps thru the
oss emulation of alsa.
For gnomemeeting this is just fine because is also
intended for voice, but to listen to a movie on a 8KHz
mono headset is not so HiQ.
Anyway it realy works.
What I am trying to do is to connect it when I press
the button on headset and disconnect it when I press
the button again. So no need for special applet.
I think that will be nice to put some support for
btsco in kdebluetooth, but the right person to ask is
not me.
Maybe Brad or Lars can give more details of what is in
the future development for btsco.
I just modified btsco a bit to be able to use the
rfcomm connection accepted by kdebluetoothd and did
some other small changes to better fit my Jabra BT110.

Anyway, if I can help with something, just let me
know.

Thanks,
Paul


--- Fred Schaettgen <kde-bluetooth@schaettgen.de>
wrote:

> On Sunday 16 January 2005 10:27, you wrote:
> > --- Fred Schaettgen <kde-bluetooth@schaettgen.de>
> > wrote:
> > Hi Fred,
> >
> > Yes, I can press the headset button and
> kbluetoothd
> > will start a headset connection with btsco.
> 
> And I can use it with any alsa-capable application?
> 
> > btsco is from
> http://bluetooth-alsa.sourceforge.net/
> > and is a small proof of concept AG profile using
> > snd-bt-sco which is indeed an alsa bt driver.
> > So you can connect btsco to a headset but not to a
> > phone as it does not knows HS or HF profiles.
> 
> Ah, got it.. I thought btsco handles only the SCO
> connection, but this can 
> hardly work. Do you think it would make sense to
> integrate headset support 
> into kdebluetooth at this point?
> If it works already, the only thing that's missing
> is a little tray icon, 
> where the user can terminate the headset connection.
> Problem is snd-bt-sco 
> isn't shipped with the stock kernel. But on the
> other hand it could help 
> making snd-bt-sco more popular if we support it in
> kdebluetooth. What's you 
> opinion?


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Re: [Bluez-devel] Re: [kde-bluetooth] Re: Re: How can I add a new bluetooth service ?

[Lars Grunewaldt]

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Hash: SHA1

Just a few comments that where not even asked for :)

just to describe whats happening right now:

we have a small "daemon" that does the whole rfcomm and sco connection
handling (btsco). It listens on rfcomm for the connect/disconnect events
from the headset (button press) and opens/closes sco when needed.

the second part of the whole lot is snd-bt-sco, which handles the
sco-to-audio transmission. This thing will be reworked sooner or later,
we hope it can be a user-space driver AND we want to get rid of the data
transfer loop by connecting alsa and sco socket directly (or converting
the sco socket).

What I always thought about was some way of "communication" between our
btsco daemon that does the connection handling (also should manage
different headsets and stuff like auto-connection on audio-open later),
and I think you might have some suggestions here, Fred.

i.e. an application like gnomemeeting might like to open the headset, or
a tray app could display the status of the headset. For this, the daemon
must support some "connection" thingy. How should this be done? I never
did something like that before, so I don't know... :)

Maybe something simple in /proc or /dev? We won't need much mojo there,
just control for each headset (on/off)

best regards,
~  Lars


Paul Ionescu wrote:
| Hi Fred,
|
| I used the headset with a lot of alsa apps like
| gnomemeeting, mplayer, aso, and non alsa apps thru the
| oss emulation of alsa.
| For gnomemeeting this is just fine because is also
| intended for voice, but to listen to a movie on a 8KHz
| mono headset is not so HiQ.
| Anyway it realy works.
| What I am trying to do is to connect it when I press
| the button on headset and disconnect it when I press
| the button again. So no need for special applet.
| I think that will be nice to put some support for
| btsco in kdebluetooth, but the right person to ask is
| not me.
| Maybe Brad or Lars can give more details of what is in
| the future development for btsco.
| I just modified btsco a bit to be able to use the
| rfcomm connection accepted by kdebluetoothd and did
| some other small changes to better fit my Jabra BT110.
|
| Anyway, if I can help with something, just let me
| know.
|
| Thanks,
| Paul
|
|
| --- Fred Schaettgen <kde-bluetooth@schaettgen.de>
| wrote:
|
|
|>On Sunday 16 January 2005 10:27, you wrote:
|>
|>>--- Fred Schaettgen <kde-bluetooth@schaettgen.de>
|>>wrote:
|>>Hi Fred,
|>>
|>>Yes, I can press the headset button and
|>
|>kbluetoothd
|>
|>>will start a headset connection with btsco.
|>
|>And I can use it with any alsa-capable application?
|>
|>
|>>btsco is from
|>
|>http://bluetooth-alsa.sourceforge.net/
|>
|>>and is a small proof of concept AG profile using
|>>snd-bt-sco which is indeed an alsa bt driver.
|>>So you can connect btsco to a headset but not to a
|>>phone as it does not knows HS or HF profiles.
|>
|>Ah, got it.. I thought btsco handles only the SCO
|>connection, but this can
|>hardly work. Do you think it would make sense to
|>integrate headset support
|>into kdebluetooth at this point?
|>If it works already, the only thing that's missing
|>is a little tray icon,
|>where the user can terminate the headset connection.
|>Problem is snd-bt-sco
|>isn't shipped with the stock kernel. But on the
|>other hand it could help
|>making snd-bt-sco more popular if we support it in
|>kdebluetooth. What's you
|>opinion?
|


- --
Lars Grunewaldt
* software development
* multimedia design
skills: C/C++/Java/PHP/(X)HTML/Flash/audio/video
web: http://www.dark-reality.de
mail: lgw@dark-reality.de
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