[pjsip] trouble with PJMEDIA_EAUD_NODEV under windows

[Shawn Smith]

I am working on getting python pjsua to run on a windows server with no
sound device.

The following test program works fine on my desktop where I happen to have a
soundcard (which is not being used), but fails at the lib.init() before I
get a chance to call set_null_snd_dev() on my windows server which has no
sound device on it:

====

import pjsua as pj

def log_cb(level, str, len):
    print str,

lib = pj.Lib()
uaConfig = pj.UAConfig()
logConfig = pj.LogConfig()
logConfig.callback = log_cb
mediaConfig = pj.MediaConfig()

lib.init(ua_cfg = uaConfig, log_cfg = logConfig, media_cfg = mediaConfig)

lib.set_null_snd_dev()

lib.start()

====

I've researched the FAQ and the change logs and found the fix which was
applied in:

    http://trac.pjsip.org/repos/ticket/768

I have that fix (I'm on r2931), but the above program still fails with the
complaint:

C:\cogi\cogi_pjsip>python testAudioInit.py
 10:41:47.258  pjsua_media.c  Media stack initialization has returned error:
Found no audio devices (PJMEDIA_EAUD_NODEV) [status=420005]
Traceback (most recent call last):
  File "testAudioInit.py", line 10, in <module>
    lib.init(ua_cfg = uaConfig, log_cfg = logConfig, media_cfg =
mediaConfig)
  File "C:\cogi\cogi_pjsip\pjsua.py", line 2119, in init
    self._err_check("init()", self, err)
  File "C:\cogi\cogi_pjsip\pjsua.py", line 2611, in _err_check
    raise Error(op_name, obj, err_code, err_msg)

I have looked at altering endpoint.c to ignore the error return from
pjmedia_aud_subsys_init()
but this simply results in a different error.

Do we have a way to run pjsip under windows with no sound card and use the
set_null_snd_dev()?

Thanks for any assistance.

    -Shawn Smith
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