dnd audio streaming command and control

dnd.liq

set("server.telnet",true)
set("request.grace_time", 3.0)
set("init.daemon.pidfile.path", "run/liquidsoap.pid")

# deeebuggin
# set("log.file.path","<script>.log")

# set up the stream
stream = crossfade(normalize(playlist.safe(
    id='stream', reload_mode='watch',
    'stream.txt',
)))

# if source files don't contain metadata tags, use the filename
def apply_metadata(m) =
  title = m["title"]
  print("Now Playing: #{m['filename']}")
  if (title == "") then
    [("title", "#{path.remove_extension(path.basename(m['filename']))}")]
  else
    [("title", "#{title}")]
  end
end

# apply the metadata parser
stream = map_metadata(apply_metadata, stream)

# define the source. ignore errors and provide no infallibale fallback. yolo.
radio = fallback(track_sensitive=false, [stream])

# transcode to icecast
output.icecast(
  %mp3.vbr(quality=3),
  name='Frog Hat Radio',
  description='Background music for Dungeons and Dragons',
  host="localhost",
  port=5230,
  password="********",
  mount="dnd",
  icy_metadata="true",
  url="*********",
  fallible=true,
  radio
)

env

# The directory containing the liquidsoap config, playlists, and so on.
BASE_DIR=/dnd

# The liquidsoap executable
LIQUIDSOAP=/home/evilchili/.opam/default/bin/liquidsoap

# command-line parameters for liquidsoap
LIQUIDSOAP_ARGS="--daemon $BASE_DIR/dnd.liq"

# The filename that defines the current stream playlist
STREAM="${BASE_DIR}/stream.txt"

# The pidfile of the liquidsoap daemon
PIDFILE="${BASE_DIR}/run/liquidsoap.pid"

intro.txt

sources/intro/01 Desktop Destiny.mp3

s

# Load environment variables:
#
# $LIQUIDSOAP
# $BASE_DIR
# $STREAM
# PIDFILE
source ./env

PLAYLIST="${BASE_DIR}/$1"

start_liquidsoap() {
	if [ -f $PIDFILE ] && ps -p $(cat $PIDFILE) &> /dev/null; then
		return
	fi
	echo "Liquidsoap does not appear to be running. Starting it..."
	$LIQUIDSOAP $LIQUIDSOAP_ARGS
	sleep 1
}

rebuild_playlist() {
  if [ -e $PLAYLIST ]; then
    name=$(basename -- "$1")
    name="${name%.*}"
    echo "Switching to [${name}] music..."
    unlink $STREAM
    ln -s $PLAYLIST $STREAM
    sleep 2
    skip
  else
    echo "File not found: $1"
  fi
}

skip() {
  echo 'Frog_Hat_Radio.skip'| nc -N localhost 1234 || echo "Could not contact liquidsoap. Is it running?"
  sleep 1
}

if [ "$1" = "stop" ]; then
	echo "Shutting down..."
	if [ -f $PIDFILE ]; then
		kill $(cat $PIDFILE)
	fi
else
	start_liquidsoap
	if [ "$1" ]; then
	  rebuild_playlist $1
	else
	  skip
	fi
fi