Hi! Some Bluetooth A2DP codecs like aptX Low Latency or FastStream provides "backchannel" support for voice data. And it really in A2DP profile. It can be very useful as there is no need to switch between A2DP and HSP modes. Now I was able to get FastStream codec (rebranded SBC) working in PulseAudio. And in "btmon" I see that my headset started sending backchannel voice data in SBC codec. I decoded that dump and it is really SBC codec, voice is in very good quality, better then in HSP profile. I hope that bluez can send them to pulseaudio via file descriptor. Question is, how to handle this configuration in pulseaudio? Should it be a new profile for bluetooth devices which would provides both sink and source? Because now A2DP is one-direction profile, not bi-directional. -- Pali Rohár pali.rohar at gmail.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 195 bytes Desc: not available URL: <https://lists.freedesktop.org/archives/pulseaudio-discuss/attachments/20180728/bbebe2d8/attachment.sig>
