headless-jamulus-to-icecast-linux-streamer

Warning This project is no longer maintained. If you intend to let people listen in to a Jamulus server from a website, consider using jamulus-lounge instead.

Simple script to stream sound from Jamulus to an Icecast server. Also shows listener count in Jamulus.

Assumptions

Everything runs on the same machine (accessible from localhost).

Requirements

• Jamulus server running on default port
• Icecast server running on port 8000
• JACK
• Jamulus client compiled from source with this patch applied with executable located at ../jamulus/Jamulus
• Ruby 2.5 or later
• ffmpeg

Prepare ./config.ini

<client>
 <language>en</language>
 <name_base64>bGlzdGVuICAgIFsyXQ==</name_base64>
 <instrument>0</instrument>
 <country>0</country>
 <autojitbuf>0</autojitbuf>
 <jitbuf>20</jitbuf>
 <jitbufserver>20</jitbufserver>
 <audiochannels>2</audiochannels>
 <audioquality>2</audioquality>
</client>

Guide

You need 3 terminal tabs (e.g. in tmux)

1. Start a JACK server:

   jackd --no-realtime -d dummy
   

2. Stream to Icecast:

   echo "icecast://source:<password>@<ip>:<port>/<mountpoint>" > icecast_endpoint
   ffmpeg -f jack -ac 2 -i icecaster -acodec libmp3lame -ab 128k -f mp3 $(cat icecast_endpoint)
   

3. Run the script periodically:

   while true; do ruby check.rb; sleep 10; done
   

   • Streaming will start when there is an active listener AND participant in Jamulus server.
   • Streaming will end when there everyone left the Jamulus server.