[Bluez-users] BlueZ4.x, headset and oss problem

[Bluez-users] BlueZ4.x, headset and oss problem

[manuel gysin]

Hello,

I've manged to get my headset running with BlueZ4. Sound and Voice is 
working very well with Skype.

Now I tried to use my headset with teamspeak. I tried to run it with 
aoss teamspeak, but the problem is now I have no /dev/dspx device for 
the headset.

Is there a way to solve this?


Greets and thanks

Manuel

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Re: [Bluez-users] BlueZ4.x, headset and oss problem

[Marcel Holtmann]

Hi Manuel,

> I've manged to get my headset running with BlueZ4. Sound and Voice is 
> working very well with Skype.
> 
> Now I tried to use my headset with teamspeak. I tried to run it with 
> aoss teamspeak, but the problem is now I have no /dev/dspx device for 
> the headset.

I don't even have any idea what /dev/dspx is used for. Remember that all
Bluetooth audio is virtual and lives in userspace. So if you require a
kernel device node, then the kernel (meaning ALSA) has to do some magic
here.

Regards

Marcel



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Re: [Bluez-users] BlueZ4.x, headset and oss problem

[manuel gysin]

Hi Marcel,

> Hi Manuel,
> 
>> I've manged to get my headset running with BlueZ4. Sound and Voice is 
>> working very well with Skype.
>>
>> Now I tried to use my headset with teamspeak. I tried to run it with 
>> aoss teamspeak, but the problem is now I have no /dev/dspx device for 
>> the headset.
> 
> I don't even have any idea what /dev/dspx is used for. Remember that all
> Bluetooth audio is virtual and lives in userspace. So if you require a
> kernel device node, then the kernel (meaning ALSA) has to do some magic
> here.
> 
> Regards
> 
> Marcel
> 
> 
> 

/dev/dspx should be an oss device like /dev/dsp0.
In the old version of BlueZ there was a plugin called snd-bt-sco and 
created an entry under /proc/asounds/cards.

With that the oss emulation created a dsp-device of the alsa device. But 
the wiki tells that this is no longer needed.

I use a 2.6.26 kernel with "ALSA for SoC audio support" (I know SoC is 
not ScO, I think this is not what I'm need).

My problem is now, that I can't use the aoss command cause there is no 
card entry for the headset and so no /dev/dspx will be created.

I searched around the internet but find nothing about it. So I don't 
know if it a mistake from my side or bluez does not have such a feature.

The man page of aoss told me that I can "fake" such e device with
"pcm.dsp0 {      type plug      slave.pcm "headset" }"
in ~/.asoundrc.
But this will not work, there is no such routing to the bluetooth device.

Regards
Manuel

PS: I hope my English is not to bad to understand

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