[Bluez-users] A2DP and HFP profiles for bluez

[Balint Kis <balint@k-i-s.net>]

Hello Everybody,

I am trying to implement a HFP and a A2DP profile on top of bluez. I did check out the bluez-utils/audio stuff, but I couldn't get it working, so I decided to write my own, and publish it for your review so that you can pull it into bluez if you like it.

The HFP profile is ready, but I failed to get up the L2CAP Transport Layer so I cannot get any audio out of L2CAP socket. My setup is the following:

Device: a2dp capable phone (SonyEricsson W850i and an MDA with windows mobile)
PC: usb bluetooth dongle with latest bluez stack (kernel 2.6.20-2936.fc7xen)

I implemented the L2CAP signaling layer, and the Device hooks up nicely with the PC and starts streaming the audio data. I can see the audio data with hcidump:

> ACL data: handle 1 flags 0x02 dlen 665
    L2CAP(d): cid 0x0041 len 661 [psm 25]
      AVDTP(m): ver 2 cc 0 pt 1 seqn 726 time 9478796 ssrc 1

But I don't know how to extract this data through the L2CAP socket which I opened for signaling. Is there some socket option that I need to set up in order to get the audio data? Or do I need to set up an other socket once the AVDTP state machine enters into OPEN state?

Any help is appreciated!

Many thanks in advance
Balint



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