#!/usr/bin/env python3 import time import os, subprocess, importlib.util, types import sys, signal, threading, glob import libcache from modules import * simple_modules: list[PlayerModule] = [] playlist_modifier_modules: list[PlaylistModifierModule] = [] playlist_advisor: PlaylistAdvisor | None = None active_modifier: ActiveModifier | None = None MODULES_PACKAGE = "modules" MODULES_DIR = Path(__file__, "..", MODULES_PACKAGE).resolve() logger = log95.log95("CORE") exit_pending = False intr_time = 0 exit_lock = threading.Lock() class ProcessManager(Skeleton_ProcessManager): def __init__(self) -> None: self.lock = threading.Lock() self.processes: list[Process] = [] self.duration_cache = libcache.Cache([]) def _get_audio_duration(self, file_path: Path): if result := self.duration_cache.getElement(file_path.as_posix(), False): return result result = subprocess.run(['ffprobe', '-v', 'quiet', '-show_entries', 'format=duration', '-of', 'default=noprint_wrappers=1:nokey=1', str(file_path)], capture_output=True, text=True) if result.returncode == 0: result = float(result.stdout.strip()) self.duration_cache.saveElement(file_path.as_posix(), result, (60*60), False, True) return result return None def play(self, track: Track, fade_time: int=5) -> Process: cmd = ['ffplay', '-nodisp', '-hide_banner', '-autoexit', '-loglevel', 'quiet'] assert track.path.exists() duration = self._get_audio_duration(track.path.absolute()) if not duration: raise Exception("Failed to get file duration for", track.path) if track.offset >= duration: track.offset = max(duration - 0.1, 0) if track.offset > 0: cmd.extend(['-ss', str(track.offset)]) filters = [] if track.fade_in: filters.append(f"afade=t=in:st=0:d={fade_time}") if track.fade_out: filters.append(f"afade=t=out:st={duration - fade_time - track.offset}:d={fade_time}") if filters: cmd.extend(['-af', ",".join(filters)]) cmd.append(str(track.path.absolute())) pr = Process(Popen(cmd, stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, start_new_session=True), track.path.name, time.monotonic(), duration - track.offset) with self.lock: self.processes.append(pr) return pr def anything_playing(self) -> bool: with self.lock: self.processes = [p for p in self.processes if p.process.poll() is None] return bool(self.processes) def stop_all(self, timeout: float | None = None) -> None: with self.lock: for process in self.processes: process.process.terminate() try: process.process.wait(timeout) except subprocess.TimeoutExpired: process.process.kill() self.processes.clear() def wait_all(self, timeout: float | None = None) -> None: with self.lock: for process in self.processes: try: process.process.wait(timeout) except subprocess.TimeoutExpired: process.process.terminate() self.processes.clear() procman = ProcessManager() def handle_sigint(signum, frame): global exit_pending, intr_time with exit_lock: logger.info("Received SIGINT") if (time.monotonic() - intr_time) > 5: intr_time = time.monotonic() logger.info("Will quit on song end.") exit_pending = True else: logger.warning("Force-Quit pending") procman.stop_all() raise SystemExit signal.signal(signal.SIGINT, handle_sigint) def load_filelines(path: Path): try: return [line.strip() for line in path.read_text().splitlines() if line.strip()] except FileNotFoundError: logger.error(f"Playlist not found: {path.name}") return [] def parse_playlistfile(playlist_path: Path) -> tuple[dict[str, str], list[tuple[list[str], dict[str, str]]]]: lines = load_filelines(playlist_path.absolute()) def check_for_imports(lines: list[str], seen=None) -> list[str]: if seen is None: seen = set() out = [] for line in lines: line = line.strip() if line.startswith("@"): target = Path(line.removeprefix("@")) if target not in seen: if not target.exists(): logger.error(f"Target {target.name} of {playlist_path.name} does not exist") continue seen.add(target) sub_lines = load_filelines(target) out.extend(check_for_imports(sub_lines, seen)) else: out.append(line) return out lines = check_for_imports(lines) # First, import everything out = [] global_arguments = {} for line in lines: arguments = {} line = line.strip() if not line or line.startswith(";") or line.startswith("#"): continue if "|" in line: if line.startswith("|"): # No file name, we're defining global arguments args = line.removeprefix("|").split(";") for arg in args: key, val = arg.split("=", 1) global_arguments[key] = val else: line, args = line.split("|", 1) args = args.split(";") for arg in args: key, val = arg.split("=", 1) arguments[key] = val out.append(([f for f in glob.glob(line) if os.path.isfile(f)], arguments)) return global_arguments, out def play_playlist(playlist_path, starting_index: int = 0): assert playlist_advisor try: global_args, parsed = parse_playlistfile(playlist_path) except Exception as e: logger.info(f"Exception ({e}) while parsing playlist, retrying in 15 seconds...") time.sleep(15) return playlist: list[Track] = [] [playlist.extend(Track(Path(line).absolute(), True, True, True, args) for line in lns) for (lns, args) in parsed] # i can read this, i think for module in playlist_modifier_modules: playlist = module.modify(global_args, playlist) or playlist [mod.on_new_playlist(playlist) for mod in simple_modules + [active_modifier] if mod] # one liner'd everything return_pending = False cross_fade = int(global_args.get("crossfade", 5)) max_iterator = len(playlist) song_i = i = starting_index while i < max_iterator: if exit_pending: logger.info("Quit received, waiting for song end.") procman.wait_all() raise SystemExit elif return_pending: logger.info("Return reached, next song will reload the playlist.") procman.wait_all() return if playlist_advisor.new_playlist(): logger.info("Reloading now...") return_pending = True continue track = playlist[song_i % len(playlist)] if active_modifier: track, extend = active_modifier.play(song_i, track) if track is None: song_i += 1 continue if extend: max_iterator += 1 else: extend = False logger.info(f"Now playing: {track.path.name}") for module in simple_modules: module.on_new_track(song_i, track) pr = procman.play(track, cross_fade) ttw = pr.duration if track.fade_out: ttw -= cross_fade end_time = pr.started_at + ttw while end_time >= time.monotonic() and pr.process.poll() is None: start = time.monotonic() [module.progress(song_i, track, time.monotonic() - pr.started_at, pr.duration, ttw) for module in simple_modules if module] elapsed = time.monotonic() - start remaining_until_end = end_time - time.monotonic() if elapsed < 1 and remaining_until_end > 0: time.sleep(min(1 - elapsed, remaining_until_end)) i += 1 if not extend: song_i += 1 def main(): logger.info("Core is starting, loading modules") global playlist_advisor, active_modifier for file in MODULES_DIR.glob("*"): if file.name.endswith(".py") and file.name != "__init__.py": module_name = file.name[:-3] full_module_name = f"{MODULES_PACKAGE}.{module_name}" spec = importlib.util.spec_from_file_location(full_module_name, Path(MODULES_DIR, file)) if not spec: continue module = importlib.util.module_from_spec(spec) sys.modules[full_module_name] = module if MODULES_PACKAGE not in sys.modules: parent = types.ModuleType(MODULES_PACKAGE) parent.__path__ = [str(MODULES_DIR)] parent.__package__ = MODULES_PACKAGE sys.modules[MODULES_PACKAGE] = parent module.__package__ = MODULES_PACKAGE if not spec.loader: continue try: spec.loader.exec_module(module) except Exception as e: logger.error(f"Failed loading {module_name} due to {e}") continue if md := getattr(module, "module", None): if isinstance(md, list): simple_modules.extend(md) else: simple_modules.append(md) if md := getattr(module, "playlistmod", None): if isinstance(md, tuple): md, index = md if isinstance(md, list): playlist_modifier_modules[index:index] = md else: playlist_modifier_modules.insert(index, md) elif isinstance(md, list): playlist_modifier_modules.extend(md) else: playlist_modifier_modules.append(md) if md := getattr(module, "advisor", None): if playlist_advisor: raise Exception("Multiple playlist advisors") playlist_advisor = md if md := getattr(module, "activemod", None): if active_modifier: raise Exception("Multiple active modifiers") active_modifier = md if not playlist_advisor: logger.critical_error("Playlist advisor was not found") raise SystemExit(1) InterModuleCommunication(simple_modules + [playlist_advisor, ProcmanCommunicator(procman), active_modifier]) logger.info("Starting playback.") try: arg = " ".join(sys.argv[1:]) if len(sys.argv) > 1 else None if active_modifier: active_modifier.arguments(arg) while True: if playlist := playlist_advisor.advise(arg): logger.info(f"Advisor picked '{playlist}' to play") play_playlist(playlist) if exit_pending: raise SystemExit except Exception as e: logger.critical_error(f"Unexpected error: {e}") raise finally: procman.stop_all()