Re: A2DP sink indications + autoclose after suspension

Hi,

2010/2/23 Jacek Szczech [off-list ref]:

Hi,

I succeeded writing a program that receives a2dp stream (from my mobile
phone), decodes and sends to stdout using unix/ipc interface. It'll be run on
old hw without X enviroment, that's why I didn't use already available
software (like pulseaudio).

I faced a few problems connected with suspension of stream:

1) Unix.c does not support indications (am I right?). How can I detect changes
of states (e.g. OPEN<->STREAMING)? I can detect suspension with EAGAIN on
stream_fd but it does not seem to be proper solution. Do you plan to support
indications in unix/ipc interface?

You can listen for State on Audio interface or in the profile specific
interfaces such as AudioSource/AudioSink/Headset.

2) Will it be possible to get indications concerning OPEN<->STREAMING changes
on dbus Media interface?

Media interface is just for endpoint registration, but again you can
achieve the same by listen to State changes e.g. Connected <-> Playing

3) After suspension of stream (SUSPEND sent from SRC) the stream
is CLOSEd after about 10 seconds. What part of code disconnects this? Is it a
way to avoid this?

Afaik this is not triggered if there is a unix client holding a lock,
so if e.g. the headset reconnects you have to claim the socket
otherwise it will timeout.

-- 
Luiz Augusto von Dentz
Computer Engineer