[arm-allstar] simultaneous asterisk and direwolf possible?

[Doug Crompton]

A couple of thoughts....

You could archive the audio and play it back to direwolf.... Don't archive
to the SD card.  Use a USB stick or do it to RAM,

archivedir=/media/MS1
archiveaudio=1          ; Saving .wav files

You could use nptee to stream the audio to the other device....

https://www2.hamvoip.org/nptee_howto.pdf

*73 Doug, WA3DSP*
*http://wa3dsp.org <http://wa3dsp.org>*


On Sun, Apr 5, 2020 at 6:25 PM "Tony via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> My hamvoip node is often connected to an ASL hub node on a large network
> of linked repeaters. Occasionally, we all hear what sound like APRS
> beacons, as they occur regularly every 10 or 15 minutes. The idea occurs
> to me to use "direwolf" to decode these beacons, so that the responsible
> operator can be alerted to their error of beaconing on a linked network
> of FM repeaters.
>
> The initial problem occurs as an inability to share the USB sound card
> audio:
>
> [root at yellow ~]# aplay -l
> **** List of PLAYBACK Hardware Devices ****
> card 0: Device [USB Audio Device], device 0: USB Audio [USB Audio]
>    Subdevices: 0/1
>    Subdevice #0: subdevice #0
>
> [root at yellow ~]# grep -E "^ADEVICE|^ACHANNELS" direwolf.conf
> ADEVICE plughw:0,0 -
> ACHANNELS 1
>
> [root at yellow ~]# direwolf -t 0
> Dire Wolf version 1.5
> ...
> Reading config file direwolf.conf
> Audio device for both receive and transmit: plughw:0,0  (channel 0)
> Could not open audio device plughw:0,0 for input
> Device or resource busy
> Pointless to continue without audio device.
>
> This occurs even if /run/lock/asound.state.lock and its symlink
> /var/lock/asound.state.lock are rm'd. It runs properly if asterisk isn't
> running, but then the ASL audio stream containing the APRS isn't available:
>
> [root at yellow ~]# astdn.sh && direwolf -t 0
> Stopping Asterisk...
> Asterisk ended with exit status 0
> Asterisk shutdown normally.
> Dire Wolf version 1.5
> ...
> Reading config file direwolf.conf
> Audio device for both receive and transmit: plughw:0,0  (channel 0)
> Channel 0: 1200 baud, AFSK 1200 & 2200 Hz, E+, 44100 sample rate / 3,
> DTMF decoder enabled.
> Ready to accept AGW client application 0 on port 8000 ...
> Ready to accept KISS TCP client application 0 on port 8001 ...
>
> Is there some way to get both asterisk and direwolf listening to the
> same audio stream? Or must I use a USB RTL-SDR stream listening on the
> simplex node radio frequency and decode the APRS from among that audio
> stream?
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