[pulseaudio-discuss] bluetooth headset connection and disconnection status
tanuk at iki.fi
Sun Apr 8 09:38:54 UTC 2018
On Tue, 2018-04-03 at 19:18 +0900, Shinnosuke Suzuki wrote:
> I am developing simple telephony app using pulseauio 11.1.
> I would like to get status for bluetooth headset connection and
> Is there any way to get status for connection and disconnection for
> bluetooth headset?
> I write a telephony app in C with parec and pacat command to handle
> bluetooth headset.
> So I would like to judge whether app can connect call with bluetooth
You can use libpulse to query the bluetooth card status (and you could
use libpulse to also record and play audio - using parec and pacat
sounds quite hacky if you're writing a serious application).
pa_context_get_card_info_list() can be used to get the information
about all cards. If you see the headset in the list, then it's
The documentation for libpulse is here:
The card might not have the right profile active, but pulseaudio should
automatically switch to the HSP profile if you create a recording
stream with the media.role property set to "phone". In case of parec
that can be done by passing command line argument
--property=media.role=phone . You can also manually switch the profile
You can get notifications when things change (e.g. a new card appears)
with the subscription API of libpulse.
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