Hello,
Am 14.09.2011 11:40, schrieb Luiz Augusto von Dentz:
Hi Alexander,
On Fri, Sep 9, 2011 at 11:39 PM, Alexander Skwar
<[email protected]> wrote:
Hello,
Am 09.09.2011 21:52 schrieb "Johan Hedberg"<[email protected]>:
Hi Alexander,
...
Firstly, you should be a bit more precise: I assume you're talking about
having audio streams active to both profiles at the same time, and not
about them being connected (but having an audio stream inactive) at the
same time.
Well, let me try to describe what I would like to get.
I want to hear music and i also want to be able to use VoIP.
That's the key here.
For music, I need a2dp, for VoIP, I need hsp. But when I enable a2dp
output/profile in the phonon settings or with the pacmd command, I can no
longer select the p311 as a recording device in phonon and it is also not
shown in ekiga and other apps for input (only for output).
When I select hsp, I can select the p311 as a recording device, but when I
play music in amarok or the like, it sounds terrible (because the sound
quality of hsp is bad, but good enough for VoIP).
Hsp doesn't really have to be active most of the time, only when I actually
use VoIP. The VoIP is open all day long. But when I am actually in a call,
a2dp can (and actually SHOULD) be off. No need to listen to music while
talking… ;-)
Most headset cannot handle streaming simultaneously in both a2dp +
hfp, but it seems you only need one or the other and for that you can
use the card profile to switch.
Well, this basically means, that it's not going to work at all, doesn't
it? Reason:
If headset/connection is in a2dp mode, I cannot select the headset as an
input device. It's not offered. Thus I cannot configure my VoIP client
to use the headset as an input device. If I were to configure my VoIP
client, then the headset has to be in hsp/hfp profile. But that means
crummy music. As soon as I'd switch to "music mode" (ie. a2dp), the VoIP
client would lose the configured input device, wouldn't it?
I base my assumption on the observation, that the input device "goes
away", as soon as I switch to a2dp and comes back, when I go to hsp.
This is with the Phonon backend of KDE 4.6.0 of openSUSE 11.4.
The default BlueZ behavior when connecting a headset, and also something
recommended in Bluetooth white papers, is to always have both profiles
connected.
Aha. That is why both connect, when I connect to one in the Bluetooth icon
in the system tray of KDE.
If KDE uses org.bluez.Audio.Connect then yes both profiles gonna be
I don't know what KDE uses.
connect, but note that only one will be streaming/active.
Is it possible to get what I would like to get?
Yes, but iirc there is no audio policy to do this automatically for
you, so you gonna have to manually select the profile you want to use
e.g. for VoIP switch to hfp and for media player switch to a2dp.
This "Yes" is a strong "No". I'd like to start _BOTH_ the music
app (eg. Amarok) *AND* the VoIP client (eg. Ekiga) in the morning
at the same time. Both apps are running all day long (in the case
of Ekiga/VoIP, that's actually a must, because else I would not be
reachable via VoIP).
Oh, well, guess Linux + Bluetooth audio really is not there yet.
Especially considering, that it seems like it cannot even keep up
a good enough connection and thus is Skipping A LOT of bytes :(
As mentioned before:
I think I'm gonna ditch Bluetooth. Too complicated to setup on Linux. :(
Alexander
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