Digital DJ uses the festival text to speech engine and the jack audio toolkit to create an MPD client that, upon song change, announces the upcoming song title and artist and shows a notification. It also takes midi input that can control MPD with pause/play, stop, previous track, and next track operations.
$ PREFIX=/usr waf configure
$ waf
# waf install
PREFIX may be set to any desired installation root, for example /usr/local
or /usr.
$ digitalDJ
Digital DJ has a midi input port that allows contrtol over MPD.
An MPD operation is triggered by sending a value of 127 to the operation's mapped MIDI CC number. The following table shows the CC number to operation mapping.
| MIDI CC number | MPD Operation |
|---|---|
| 41 | Play/Pause |
| 42 | Stop |
| 43 | Previous Track |
| 44 | Next Track |
To hear the announcements, route the output of Digital DJ to your desired pipewire or jack input ports. Any audio routed to the Digital DJ input ports will be re-played on the output ports modified by lowering volume of the incoming audio while the DJ is speaking.
Route your MPD output ports to the DJ input ports to hear the lowered volume while the DJ makes its announcements.
To enable Digital DJ as a service, run:
$ systemctl --user enable digitalDJ
$ systemctl --user start digitalDJ