start.sh

#!/bin/bash
set -e
JUPYTER_TOKEN="${JUPYTER_TOKEN:=huggingface}"
NOTEBOOK_DIR="/data"
jupyter labextension disable "@jupyterlab/apputils-extension:announcements"

sudo rm -f /tmp/*jack*

# Start Xvfb
echo "Starting Xvfb..."
Xvfb :99 -screen 0 1024x768x16 &
sleep 2
export DISPLAY=:99
xhost +local:user

# Start Icecast silently
echo "Starting Icecast..."
#icecast2 -c /app/icecast.xml -b > /dev/null 2>&1 &
# Wait for icecast
sudo cp /app/icecast.xml /etc/icecast2/icecastnew.xml
sudo service icecast2 start
sleep 2

# Start JACK with dummy backend
echo "Starting JACK..."
# -r 44100 often works better across devices; dummy backend suitable for docker
jackd -r -d dummy -r 44100 &
sleep 2
export XDG_RUNTIME_DIR=/data

echo "Starting SuperCollider with scsynth..."
#echo "{SinOsc.ar(440, 0, 0.1)}.play;" >> setup.sc
echo "" >> setup.sc
sclang setup2.sc > sclang.out &
sleep 5
sclang setup.sc >> sclang.out &
sleep 10

# Start FFmpeg to stream from JACK to Icecast
# We need to find the JACK ports. Usually SuperCollider outputs to 'SuperCollider:out_1' and 'SuperCollider:out_2'
# But SC isn't running yet. We'll start ffmpeg in a loop or start it after SC.
# Actually, if we use a jack input in ffmpeg, it might fail if jackd isn't there, but it is there.
# However, if SC isn't there, there's nothing to record.
# But we can capture from the "system" or wait for SC ports.
# A simpler way: Start a dummy loopback or just start ffmpeg listening to expected ports.
# 'ffmpeg -f jack -i sc-output ...'

# For now, let's just background the ffmpeg process. It might retry or we can start it later.
# Better approach: Start SuperCollider first (via FoxDot or standalone), then FFmpeg.
# But FoxDot is interactive.
# We will start a background script that waits for SuperCollider ports to appear then starts FFmpeg.

(
    echo "Waiting for SuperCollider ports..."
    while ! jack_lsp | grep -q "SuperCollider:out_1"; do
        sleep 1
    done
    echo "SuperCollider found. Starting FFmpeg streamer ..."
    ffmpeg -vn -re -f jack -thread_queue_size 16 -probesize 32 -analyzeduration 0 \
            -i ffmpeg -ac 2 -codec:a libmp3lame -b:a 192k -compression_level 0 -flush_packets 1 \
            -content_type audio/mpeg -ice_name "Radio HOP" -ice_description "This is HOP, based on FoxDot" \
            -ice_genre "FoxDot" -vn -f mp3 icecast://source:hackme@localhost:8000/stream.mp3
) &
sleep 2
jack_connect SuperCollider:out_1 ffmpeg:input_1
jack_connect SuperCollider:out_2 ffmpeg:input_2

#
# PRODUCTION STREAM
#
# Start Nginx
echo "Starting Nginx..."
nginx -c /app/nginx.conf &

# Starting Consumer
echo "Starting API Consumer"
python3 Consumer.py > out2.txt &

# Start Jupyter Lab on 8888 (internal) with nginx
echo "Starting Jupyter Lab..."
#
# DEVELOPMENT ENVIRONMENT
# Jupyter Lab
#
#     --no-browser \
jupyter-lab \
    --ip 0.0.0.0 \
    --port 8888 \
    --allow-root \
    --ServerApp.token="$JUPYTER_TOKEN" \
    --ServerApp.tornado_settings="{'headers': {'Content-Security-Policy': 'frame-ancestors *'}}" \
    --ServerApp.cookie_options="{'SameSite': 'None', 'Secure': True}" \
    --ServerApp.base_url="/dev/"
    --ServerApp.disable_check_xsrf=True \
    --LabApp.news_url=None \
    --LabApp.check_for_updates_class="jupyterlab.NeverCheckForUpdate" \
    --notebook-dir=$NOTEBOOK_DIR
    Untitled1.ipynb Player.ipynb