142 lines
3.7 KiB
Python
142 lines
3.7 KiB
Python
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import logging
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import os
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from pathlib import Path
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from subprocess import Popen
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from time import sleep
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from Exscript.protocols import Telnet
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from croaker import path
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from croaker.pidfile import pidfile
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from croaker.playlist import Playlist, load_playlist
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NOW_PLAYING = None
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LIQUIDSOAP_CONFIG = """
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set("server.telnet",true)
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set("request.grace_time", 1.0)
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set("init.daemon.pidfile.path", "{pidfile.path}")
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set("decoder.ffmpeg.codecs.alac", ["alac"])
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# deeebuggin
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set("log.file.path","{debug_log}")
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# set up the stream
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stream = crossfade(normalize(playlist.safe(
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id='stream',
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reload_mode='watch',
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mode='normal',
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'{playlist_root}/now_playing',
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)))
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# if source files don't contain metadata tags, use the filename
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def apply_metadata(m) =
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title = m["title"]
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print("Now Playing: #{{m['filename']}}")
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if (title == "") then
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[("title", "#{{path.remove_extension(path.basename(m['filename']))}}")]
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else
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[("title", "#{{title}}")]
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end
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end
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# apply the metadata parser
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stream = map_metadata(apply_metadata, stream)
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# define the source. ignore errors and provide no infallibale fallback. yolo.
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radio = fallback(track_sensitive=false, [stream])
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# transcode to icecast
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output.icecast(
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%mp3.vbr(quality=3),
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name='Croaker Radio',
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description='Background music for The Frog Hat Club',
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host="{icecast_host}",
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port={icecast_port},
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password="{icecast_password}",
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mount="{icecast_mount}",
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icy_metadata="true",
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url="{icecast_url}",
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fallible=true,
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radio
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)
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"""
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def generate_liquidsoap_config():
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log = path.root() / "liquidsoap.log"
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if log.exists():
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log.unlink()
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log.touch()
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ls_config = path.root() / "croaker.liq"
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with ls_config.open("wt") as fh:
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fh.write(
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LIQUIDSOAP_CONFIG.format(
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pidfile=_pidfile(terminate_if_running=False),
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debug_log=log,
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playlist_root=path.playlist_root(),
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icecast_host=os.environ.get("ICECAST_HOST"),
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icecast_port=os.environ.get("ICECAST_PORT"),
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icecast_mount=os.environ.get("ICECAST_MOUNT"),
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icecast_password=os.environ.get("ICECAST_PASSWORD"),
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icecast_url=os.environ.get("ICECAST_URL"),
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)
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)
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path.playlist_root().mkdir(exist_ok=True)
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def start_liquidsoap():
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logging.debug("Staring liquidsoap...")
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pf = _pidfile(terminate_if_running=False)
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pid = pf.read_pid()
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if not pid:
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logging.info("Liquidsoap does not appear to be running. Starting it...")
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generate_liquidsoap_config()
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Popen([os.environ["LIQUIDSOAP"], "--daemon", path.root() / "croaker.liq"])
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sleep(1)
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def start():
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play_next("session_start")
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def stop():
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_pidfile(terminate_if_running=True)
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def play_next(playlist_name: str = None):
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start_liquidsoap()
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if playlist_name:
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pl = load_playlist(playlist_name)
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logging.debug(f"Loaded playlist {pl = }")
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if NOW_PLAYING != pl.name:
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_switch_to(pl)
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_send_liquidsoap_command("skip")
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def _pidfile(terminate_if_running: bool = True):
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pf = os.environ.get("LIQUIDSOAP_PIDFILE", None)
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if pf:
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pf = Path(pf)
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else:
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pf = path.root() / "liquidsoap.pid"
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return pidfile(pf, terminate_if_running=terminate_if_running)
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def _switch_to(playlist: Playlist):
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logging.debug(f"Switching to {playlist = }")
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np = path.playlist_root() / Path("now_playing")
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with np.open("wt") as fh:
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for track in playlist.tracks:
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fh.write(f"{track}\n")
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playlist.name
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def _send_liquidsoap_command(command: str):
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conn = Telnet()
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conn.connect("localhost", port=1234)
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conn.send(f"Croaker_Radio.{command}\r")
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conn.send("quit\r")
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conn.close()
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