[Jack-Devel] Problems with audioadapter used with capture only interface

Hi,

I wanted to use jack2 with an embedded system equipped with capture
only interface.
I can start the server with the net backend:

# jackd -r -dnet  -C0 -P1
jackdmp 1.9.10
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2013 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
JACK server starting in non-realtime mode
NetDriver started in async mode without Master's transport sync.
Waiting for a master...
Initializing connection with WZlap...
**************** Network parameters ****************
Name : buildroot
Protocol revision : 7
MTU : 1500
Master name : WZlap
Slave name : buildroot
ID : 26
Transport Sync : no
Send channels (audio - midi) : 0 - 0
Return channels (audio - midi) : 1 - 0
Sample rate : 48000 frames per second
Period size : 256 frames per period
Network latency : 5 cycles
SampleEncoder : Float
Slave mode : async
****************************************************

However, when I try to load the audioadapter i get:

# jack_load audioadapter -i "-C hw:0,1 -r48000 -p256 -n3 "
could not load audioadapter, intclient = 0 status = 0x 1

and the server displays:
Ringbuffer automatic adaptative mode size = 4096 frames
../linux/alsa/JackAlsaAdapter.h:226, alsa error -2 : No such file or
directory

I have checked the line ../linux/alsa/JackAlsaAdapter.h:226 and found,
that the "open" function defined here ALWAYS tries to open the
soundcard both as capture and playback device.

How can I patch this function so that the playback part is attemted to
open only if the audiodapter is loaded for playback or both for
capture and playback?

Probably people wanting to use audioadapter with playback only devices
will face the similar problem...

--
TIA & Reagrds,
Wojciech M. Zabołotny
My GPG/PGP keys:
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