Re: [Bluez-devel] A2DP and Alsa Plugin

[Brad Midgley <bmidgley@xmission.com>]

Frederic

> I recently started to work with bluetooth-alsa (0.41) and a bluetake
> iPhono BT420 headset. I made it work using a2play, but not using
> alsa-plugins. I also tried the latest cvs without success.

stick with cvs for this stuff. the 0.41 release will not work (esp plugin).

> Has anyone made the plugin work? Also, as I will have time to work
> with bt-alsa, I would be pleased to help. What must/can be done? What
> area can I investigate in order to have a2dp working with alsa?

Sergey did help us get it working. I've got a csr adapter on my computer
and I'm testing with an iphono mini set. It's possible he and I are
using different versions of a2dp_transfer (a2dp_transfer2 works better
for me and that's the one cvs-head uses)

I had to put in a bunch of i/o retries that Sergey didn't so the
behavior can differ a lot from setup to setup. Alsa interrupts our
system calls so we have to be careful about calls that take time like
initially connecting to the set.

There is plenty to be done... you need to get it working first :)

seriously, alsa plugin needs bulletproofing (eg we need to watch error
messages from write() and think about how to handle them gracefully). I
also noticed that after choosing pcm.headset, gxine wouldn't even launch
when my headset was off.

Brad


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