Hi Mikel,
However, I still see some value in having a more coupled relation
between modems and audio-cards, beyond the RemoteAddress/LocalAddress
pair. This is specially interesting for the HS role, since otherwise
both modems and audio-cards need to be tracked and matched.
The two roles might actually need to be separated. After all, there
are some fundamental differences: audio-cards representing a remote
gateway would be statically associated to a modem. Actually the modem
*represents* this device, so signals such as CardAdded/CardRemoved
provide little value.
This API is meant specifically for PA or another Audio subsystem. What
you want to be tracking and cross-referencing I'm not quite sure of.
On the other hand, audio-cards representing remote headsets are more
dynamic: they come and go depending on the number of paired headsets
(or more likely, the connected ones - it's not clear what "attached"
means in the doc).
In practice, attached means an established SLC connection.
One possibility would be to register HandsfreeAudioCard in the modem
object path for the HS role (as I proposed before) and dynamically
register the necessary objects for the AG role. In the later case, the
connected headsets could be announced as in Denis' original proposal
(perhaps renamed to HeadsetAdded/HeadsetRemoved).
Perhaps, but why would you be using this API and not one from PA?
The ability to distinguish HS and AG roles in the client's side is
desirable (at least PulseAudio heavily depends on this information).
So even if the proposal above is not accepted, at least the role
(UUID) would have to be exposed somehow.
The type information was left out on purpose from this proposal. Likely
it is necessary, but for the initial phase it does not seem relevant. I
also have yet to hear concise and clear summary on the utility of
providing this information.
If so, I have some concerns about the potential race conditions. If
SCO was closed and reopen immediately afterwards, the client could
receive the (second) NewConnection before the HUP.
You are going over-the-air vs local machine. I really do not see this
ever happening. But even if it does, is this really a hard problem for
the Agent to deal with?
Regards,
-Denis
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