Hi, > Thank you for your advice. > I would like to use libpulse, but I couldnâ??t make it properly. > So I use parec/pacat command. > I'll get information from â??pactl list cardsâ??. I could get status for bluetooth headset connection with pactl. But pactl command seems to use exclusion control, when I use pact/parec to send/recv voice packet, pactl command stops voice packet of pact/parec only while executing pactl command. I confirmed parec pact and pactl with trace-cmd. I would like to implement monitoring bluetooth connection during the voice call with bluetooth headset. Is there any solution on this? Do I have to use pa_context_get_card_info_list of libpulse? Best Regards, Shinnosuke Suzuki > On Apr 15, 2018, at 16:58, Shinnosuke Suzuki <suzukisn at gmail.com> wrote: > > Hi, > >> 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 >> connected. > > Thank you for your advice. > I would like to use libpulse, but I couldnâ??t make it properly. > So I use parec/pacat command. > I'll get information from â??pactl list cardsâ??. > > Best Regards, > Shinnosuke Suzuki > >> On Apr 8, 2018, at 18:38, Tanu Kaskinen <tanuk at iki.fi> wrote: >> >> On Tue, 2018-04-03 at 19:18 +0900, Shinnosuke Suzuki wrote: >>> Hi, >>> >>> I am developing simple telephony app using pulseauio 11.1. >>> I would like to get status for bluetooth headset connection and >>> disconnection. >>> 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 >>> headset. >> >> 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 >> connected. >> >> The documentation for libpulse is here: >> https://freedesktop.org/software/pulseaudio/doxygen/index.html >> >> 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 >> with pa_context_set_card_profile_by_name(). >> >> You can get notifications when things change (e.g. a new card appears) >> with the subscription API of libpulse. >> >> -- >> Tanu >> >> https://liberapay.com/tanuk >> https://www.patreon.com/tanuk >
