moninp

This tool maps Linux Input Device events into mpc commands that allow you to control mpd.

The whole code except the Key Press/Command mapping was written by Ronium You can find it on Unix StackExchange

I use this little program to control Volumio with Xbox One Media Remote and 1st gen Flirc USB

Provided mapping

This project uses my Flirc button mapping for Xbox One Media Remote which you can find in xbox_one_media_remote_flirc_config.fcfg

Compile

You can build the binary with your own mappings by simply compiling the source file with gcc.

gcc moninp.c -o monimp

PS. Volumio doesn't have gcc installed, so you can compile it on e.g.: (Rasbian Jessie Lite](https://www.raspberrypi.org/downloads/raspbian/)

Run:

sudo ./moninp /dev/input/event2

You can also provide device ID. My 1st gen Flirc USB is identified as /dev/input/by-id/usb-flirc.tv_flirc-event-kbd. So you can start moninp

sudo ./moninp /dev/input/by-id/usb-flirc.tv_flirc-event-kbd

Run manually in the backgroud:

sudo sh -c 'nohup ./moninp /dev/input/by-id/usb-flirc.tv_flirc-event-kbd &'

To run it on Volumio start-up:

copy prefered moninp_* binary to /usr/local/bin
rename the /usr/local/bin/moninp_* binary to /usr/local/bin/moninp
copy moninp start-up script to /etc/init.d/
copy moninp.service to /etc/systemd/system/moninp.service
SSH onto your volumio
Check if moninp is NOT running with systemctl status moninp.service

volumio@volumio:/etc/systemd/system$ systemctl status moninp.service
● moninp.service - Input Device Event Monitor
   Loaded: loaded (/etc/systemd/system/moninp.service; disabled)
   Active: inactive (dead)

Apr 08 15:20:37 volumio systemd[1]: Starting LSB: Monitor Input Device Events...
Apr 08 15:20:37 volumio systemd[1]: Started LSB: Monitor Input Device Events.
Apr 08 15:20:37 volumio moninp[545]: Starting moninp...                                Ok
Apr 08 15:26:17 volumio systemd[1]: Stopping LSB: Monitor Input Device Events...
Apr 08 15:26:17 volumio moninp[1462]: Stopping moninp                                   /etc/init.d/moninp: line 56: kill: (550) - No such process
Apr 08 15:26:17 volumio moninp[1462]: Ok
Apr 08 15:26:17 volumio systemd[1]: Stopped LSB: Monitor Input Device Events.

Start moninp service with systemctl start moninp.service

volumio@volumio:/etc/systemd/system$ systemctl status moninp.service
● moninp.service - Input Device Event Monitor
   Loaded: loaded (/etc/systemd/system/moninp.service; disabled)
   Active: active (running) since Sat 2017-04-08 15:46:55 UTC; 2s ago
 Main PID: 1780 (moninp)
   CGroup: /system.slice/moninp.service
           └─1780 /usr/local/bin/moninp /dev/input/by-id/usb-flirc.tv_flirc-event-kbd

Apr 08 15:46:55 volumio systemd[1]: Started Input Device Event Monitor.
Apr 08 15:46:55 volumio moninp[1780]: Name      : flirc.tv flirc
Apr 08 15:46:55 volumio moninp[1780]: Version   : 1.0.1
Apr 08 15:46:55 volumio moninp[1780]: ID        : Bus=0003 Vendor=20a0 Product=0001 Version=0101
Apr 08 15:46:55 volumio moninp[1780]: ----------

Finally enable moninp service on start with systemctl enable moninp.service

If everything went smoothly, then you should see something like:

volumio@volumio:/etc/systemd/system$ systemctl enable moninp.service
Synchronizing state for moninp.service with sysvinit using update-rc.d...
Executing /usr/sbin/update-rc.d moninp defaults
insserv: warning: current start runlevel(s) (empty) of script `moninp' overrides LSB defaults (2 3 4 5).
insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script `moninp' overrides LSB defaults (0 1 6).
Executing /usr/sbin/update-rc.d moninp enable

In some situations Perl might print some warnings, but you can ignore them.

volumio@volumio:/etc/systemd/system$ systemctl enable moninp.service
Synchronizing state for moninp.service with sysvinit using update-rc.d...
Executing /usr/sbin/update-rc.d moninp defaults
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_COLLATE = "C",
	LANG = "en_GB.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").
insserv: warning: current start runlevel(s) (empty) of script `moninp' overrides LSB defaults (2 3 4 5).
insserv: warning: current stop runlevel(s) (0 1 2 3 4 5 6) of script `moninp' overrides LSB defaults (0 1 6).
Executing /usr/sbin/update-rc.d moninp enable
perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
	LANGUAGE = (unset),
	LC_ALL = (unset),
	LC_COLLATE = "C",
	LANG = "en_GB.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Using your own mapping

If you'd like to change the mapping, then ATM you will have to:

run monimp binary for your selected input device
press a button on your remote
find the button code for an event with type=00 & value=00 (key up)

e.g.: in the example below we're after code from line number 5 (2nd would work too :) )

1491342238.860640: type=04 code=04 value=c00cd
1491342238.860640: type=01 code=a4 value=01
1491342238.860640: type=00 code=00 value=00
1491342239.020638: type=04 code=04 value=c00cd
1491342239.020638: type=01 code=a4 value=00
1491342239.020638: type=00 code=00 value=00
1491342244.333333: type=04 code=04 value=c00b3
1491342244.333333: type=01 code=d0 value=01

add new mapping for this code or replace existing one
compile, upload binary to your mpd powered player and enjoy

Futurue work