[Bluez-devel] scooped by pocketpc (a2dp)

[Bluez-devel] scooped by pocketpc (a2dp)

[Brad Midgley]

hey

it's interesting to note that one of the pocketpc manufacturers 
(audiovox?) was announcing a2dp profile support at the consumer 
electronics show. the implementation has been floating around and i 
tried it out. it needs the occasional soft reset but otherwise works.

anyway, we're no longer ahead of every other commercial OS with our 
implementation, but on the bright side, we should be getting interest 
from more developers.

the next step is still an a2dp userspace alsa driver which has sort of 
stalled (my fault). i would be more excited about it if there was a voip 
application out there that used libalsa. (there's not a way to get oss 
emulation for a userspace alsa driver) kphone uses only oss.

btw, i couldn't find a way in the spec to adjust the a2dp headset's 
audio from the a2dp source. has anyone noticed a way?

brad


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Re: [Bluez-devel] scooped by pocketpc (a2dp)

[Lars Grunewaldt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

dear Brad,

all programs that use openh323/pwlib (latter for hardware abstraction)
use alsalib, because pwlib can be compiled against alsalib or oss or both.

That leads to - at least - gnomemeeting and openphone supporting alsa
directly :)

to bad that skype does support only oss, while they seem to have
artsd/esd support (I never tried that though).

I'm not that interested because my headset only supports the mono
headset profile... ;)

writing the a2dp alsa driver should be similar to the btsco alsa part,
maybe we can build one thing for both purposes, or at least keep
structures similar so that both projects can support each other best!

cu,
~  Lars


Brad Midgley wrote:
| hey
|
| it's interesting to note that one of the pocketpc manufacturers
| (audiovox?) was announcing a2dp profile support at the consumer
| electronics show. the implementation has been floating around and i
| tried it out. it needs the occasional soft reset but otherwise works.
|
| anyway, we're no longer ahead of every other commercial OS with our
| implementation, but on the bright side, we should be getting interest
| from more developers.
|
| the next step is still an a2dp userspace alsa driver which has sort of
| stalled (my fault). i would be more excited about it if there was a voip
| application out there that used libalsa. (there's not a way to get oss
| emulation for a userspace alsa driver) kphone uses only oss.
|
| btw, i couldn't find a way in the spec to adjust the a2dp headset's
| audio from the a2dp source. has anyone noticed a way?
|
| brad
|
|
| -------------------------------------------------------
| The SF.Net email is sponsored by: Beat the post-holiday blues
| Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
| It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
| _______________________________________________
| Bluez-devel mailing list
| Bluez-devel@lists.sourceforge.net
| https://lists.sourceforge.net/lists/listinfo/bluez-devel
|


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[Bluez-devel] Re: scooped by pocketpc (a2dp)

[Paul Ionescu]

Hi Brad,

I am successfully using my jabra BT110 headset with gnomemeeting which
supports alsa natively. For now gnomemeeting supports only H323, but it
will do SIP in the near future.

But I also tested with linphone which only supports OSS, and the
oss emulation worked for me (used /dev/dsp1 ).
I tested with linphone version 0.12.2.



On Sat, 15 Jan 2005 08:28:02 -0700, Brad Midgley wrote:

> hey
> 
> it's interesting to note that one of the pocketpc manufacturers
> (audiovox?) was announcing a2dp profile support at the consumer
> electronics show. the implementation has been floating around and i tried
> it out. it needs the occasional soft reset but otherwise works.
> 
> anyway, we're no longer ahead of every other commercial OS with our
> implementation, but on the bright side, we should be getting interest from
> more developers.
> 
> the next step is still an a2dp userspace alsa driver which has sort of
> stalled (my fault). i would be more excited about it if there was a voip
> application out there that used libalsa. (there's not a way to get oss
> emulation for a userspace alsa driver) kphone uses only oss.
> 
> btw, i couldn't find a way in the spec to adjust the a2dp headset's audio
> from the a2dp source. has anyone noticed a way?
> 
> brad
> 
> 
> ------------------------------------------------------- The SF.Net email
> is sponsored by: Beat the post-holiday blues Get a FREE limited edition
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Re: [Bluez-devel] Re: scooped by pocketpc (a2dp)

[Lars Grunewaldt]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi there,

I think you use snd-bt-sco, don't you? This should of course work,
because snd-bt-sco is no user-space alsa driver, but runs in kernel
space, so oss emulation works. It uses the headset profile, not a2dp.
(fancy stereo audio stuff) :)

Or am I wrong? I thought there's no alsa support for a2dp yet.

best regards,
~  Lars

Paul Ionescu wrote:
| Hi Brad,
|
| I am successfully using my jabra BT110 headset with gnomemeeting which
| supports alsa natively. For now gnomemeeting supports only H323, but it
| will do SIP in the near future.
|
| But I also tested with linphone which only supports OSS, and the
| oss emulation worked for me (used /dev/dsp1 ).
| I tested with linphone version 0.12.2.
|
|
|
| On Sat, 15 Jan 2005 08:28:02 -0700, Brad Midgley wrote:
|
|
|>hey
|>
|>it's interesting to note that one of the pocketpc manufacturers
|>(audiovox?) was announcing a2dp profile support at the consumer
|>electronics show. the implementation has been floating around and i tried
|>it out. it needs the occasional soft reset but otherwise works.
|>
|>anyway, we're no longer ahead of every other commercial OS with our
|>implementation, but on the bright side, we should be getting interest from
|>more developers.
|>
|>the next step is still an a2dp userspace alsa driver which has sort of
|>stalled (my fault). i would be more excited about it if there was a voip
|>application out there that used libalsa. (there's not a way to get oss
|>emulation for a userspace alsa driver) kphone uses only oss.
|>
|>btw, i couldn't find a way in the spec to adjust the a2dp headset's audio
|>from the a2dp source. has anyone noticed a way?
|>
|>brad
|>
|>
|>------------------------------------------------------- The SF.Net email
|>is sponsored by: Beat the post-holiday blues Get a FREE limited edition
|>SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well,
|>almost....http://www.thinkgeek.com/sfshirt
|
|
|
|
|
| -------------------------------------------------------
| The SF.Net email is sponsored by: Beat the post-holiday blues
| Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek.
| It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt
| _______________________________________________
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| Bluez-devel@lists.sourceforge.net
| https://lists.sourceforge.net/lists/listinfo/bluez-devel
|


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[Bluez-devel] Re: Re: scooped by pocketpc (a2dp)

[Paul Ionescu]

Hi Lars,

Yes, you are right. I use snd-bt-sco.
There is no alsa support for a2dp yet, but I thought that if it is added,
it can be like snd-bt-sco which works fine for me.

Best regards,
Paul

On Sat, 15 Jan 2005 18:26:14 +0100, Lars Grunewaldt wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
> 
> Hi there,
> 
> I think you use snd-bt-sco, don't you? This should of course work, because
> snd-bt-sco is no user-space alsa driver, but runs in kernel space, so oss
> emulation works. It uses the headset profile, not a2dp. (fancy stereo
> audio stuff) :)
> 
> Or am I wrong? I thought there's no alsa support for a2dp yet,
> 
> best regards,
> ~  Lars
> 
> Paul Ionescu wrote:
> | Hi Brad,
> |
> | I am successfully using my jabra BT110 headset with gnomemeeting which
> | supports alsa natively. For now gnomemeeting supports only H323, but it
> | will do SIP in the near future.
> |
> | But I also tested with linphone which only supports OSS, and the oss
> | emulation worked for me (used /dev/dsp1 ). I tested with linphone
> | version 0.12.2.
> |
> |
> |
> | On Sat, 15 Jan 2005 08:28:02 -0700, Brad Midgley wrote:
> |
> |
> |>hey
> |>
> |>it's interesting to note that one of the pocketpc manufacturers
> |>(audiovox?) was announcing a2dp profile support at the consumer
> |>electronics show. the implementation has been floating around and i
> |>tried it out. it needs the occasional soft reset but otherwise works.
> |>
> |>anyway, we're no longer ahead of every other commercial OS with our
> |>implementation, but on the bright side, we should be getting interest
> |>from more developers.
> |>
> |>the next step is still an a2dp userspace alsa driver which has sort of
> |>stalled (my fault). i would be more excited about it if there was a voip
> |>application out there that used libalsa. (there's not a way to get oss
> |>emulation for a userspace alsa driver) kphone uses only oss.
> |>
> |>btw, i couldn't find a way in the spec to adjust the a2dp headset's
> |>audio from the a2dp source. has anyone noticed a way?
> |>
> |>brad
> |>
> |>
> |>------------------------------------------------------- The SF.Net email
> |>is sponsored by: Beat the post-holiday blues Get a FREE limited edition
> |>SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well,
> |>almost....http://www.thinkgeek.com/sfshirt
> |
> |
> |
> |
> |
> | ------------------------------------------------------- The SF.Net email
> | is sponsored by: Beat the post-holiday blues Get a FREE limited edition
> | SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well,
> | almost....http://www.thinkgeek.com/sfshirt
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> | Bluez-devel@lists.sourceforge.net
> | https://lists.sourceforge.net/lists/listinfo/bluez-devel
> |
> |
> 
> - --
> 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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> sXoZbqAiZoetK/98bLxVID4=
> =FnW7
> -----END PGP SIGNATURE-----
> 
> 
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Re: [Bluez-devel] Re: scooped by pocketpc (a2dp)

[Peter Robinson]

> I am successfully using my jabra BT110 headset with gnomemeeting which
> supports alsa natively. For now gnomemeeting supports only H323, but it
> will do SIP in the near future.

Yes I use gnomemeeting with alsa at the moment but I haven't had time
to get my headset working properly under Linux.

There is a snapshot for the pre alpha SIP/H323 version of gnomemeeting
here http://snapshots.seconix.com/cvs/ although I can't get OPAL to
compile under FC3 so I haven't actually tried it yet.

Pete


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Re: [Bluez-devel] Re: scooped by pocketpc (a2dp)

[Lars Grunewaldt]

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Peter Robinson wrote:
| Yes I use gnomemeeting with alsa at the moment but I haven't had time
| to get my headset working properly under Linux.
|

Works very well with a Sony HBH-35 :)
- - Lars

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Re: [Bluez-devel] scooped by pocketpc (a2dp)

[Brad Midgley]

Lars,

> all programs that use openh323/pwlib (latter for hardware abstraction)
> use alsalib, because pwlib can be compiled against alsalib or oss or both.

hmm. i see a menu for alsa devices but our userspace a2dp device 
(currently stubbed out, but not implemented) doesn't show up. i set it 
up as documented in btsco/bt/BUILD

> That leads to - at least - gnomemeeting and openphone supporting alsa
> directly :)

that looks like a good option, esp when gm supports sip

> I'm not that interested because my headset only supports the mono
> headset profile... ;)

a2dp does not address using a microphone, so if you use a2dp, you have 
to choose a different device for audio in.

> writing the a2dp alsa driver should be similar to the btsco alsa part,
> maybe we can build one thing for both purposes, or at least keep
> structures similar so that both projects can support each other best!

well i want to try putting a2dp in a userspace driver since that might 
be the best way to go. (that's an issue that may not be totally worked 
out but i think we decided that it looks attractive enough to at least 
try writing alsa-lib drivers)

if it works well, we might rewrite the sco driver to be in userspace.

brad


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Re: [Bluez-devel] scooped by pocketpc (a2dp)

[Brad Midgley]

Lars

> hmm. i see a menu for alsa devices but our userspace a2dp device 
> (currently stubbed out, but not implemented) doesn't show up. i set it 
> up as documented in btsco/bt/BUILD
> 
>> That leads to - at least - gnomemeeting and openphone supporting alsa
>> directly :)

I noticed that linphone from debian-testing has oss and alsa devices in 
its audio device selection menu.

I still haven't been able to get the stubbed out alsa-lib driver to show 
up! I also tried a .asoundrc with

pcm.a2dpplug {
         type plug
         slave { pcm "a2dp" }
}

pcm.a2dp {
         type a2dp
         bdaddr "00:08:F4:30:05:BB"
}

since that was more like what the jack plugin is supposed to have... no 
luck...

Brad


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Re: [Bluez-devel] scooped by pocketpc (a2dp)

[Marcel Holtmann]

Hi Brad,

> I noticed that linphone from debian-testing has oss and alsa devices in 
> its audio device selection menu.
> 
> I still haven't been able to get the stubbed out alsa-lib driver to show 
> up! I also tried a .asoundrc with
> 
> pcm.a2dpplug {
>          type plug
>          slave { pcm "a2dp" }
> }
> 
> pcm.a2dp {
>          type a2dp
>          bdaddr "00:08:F4:30:05:BB"
> }
> 
> since that was more like what the jack plugin is supposed to have... no 
> luck...

the ALSA kernel drivers have an OSS emulation and so they will show up.
This is not possible for the ALSA library plugins.

Regards

Marcel




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Re: [Bluez-devel] scooped by pocketpc (a2dp)

[Marcel Holtmann]

Hi Brad,

> > writing the a2dp alsa driver should be similar to the btsco alsa part,
> > maybe we can build one thing for both purposes, or at least keep
> > structures similar so that both projects can support each other best!
> 
> well i want to try putting a2dp in a userspace driver since that might 
> be the best way to go. (that's an issue that may not be totally worked 
> out but i think we decided that it looks attractive enough to at least 
> try writing alsa-lib drivers)
> 
> if it works well, we might rewrite the sco driver to be in userspace.

I like to see both drivers in userspace as an ALSA library plugin. The
SCO driver is somewhat more interesting at the moment, because of the
ongoing VoIP hype.

There is also an SDK for ALSA library plugins planned that should make
this development easier and possible to develop them outside the ALSA
source code.

Regards

Marcel




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