Hi Pali, On Wed, Jul 11, 2018 at 2:04 PM, Pali Rohár <pali.rohar@xxxxxxxxx> wrote: > Hi! > > Some vendor A2DP bluetooth codecs like FastStream or aptX Low Latency > supports backchannel. Which means that they are bi-directional and in > A2DP they supports not only (music) playback, but also receiving > backchannel (microphone) voice. > > How to establish this bi-directional A2DP transfer with backchannel via > bluez daemon? There is no such thing as bi-directional in AVDTP, which is a screw up from the spec authors, luckily we don't have to stick to it since our sockets are bi-directional so you can send and receive data at same time, though the configuration must be the same in either direction otherwise we would have to support transport multiplexing to have multiple configuration done using the same channel. -- Luiz Augusto von Dentz -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
