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🎥 Command line media player
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104#!/usr/bin/env python3"""This script emulates "unique application" functionality. When startingplayback with this script, it will try to reuse an already running instance ofmpv (but only if that was started with umpv). Other mpv instances (not startedby umpv) are ignored, and the script doesn't know about them.This only takes filenames as arguments. Custom options can't be used; the scriptinterprets them as filenames. If mpv is already running, the files passed toumpv are appended to mpv's internal playlist. If a file does not exist or isotherwise not playable, mpv will skip the playlist entry when attempting toplay it (from the GUI perspective, it's silently ignored).If mpv isn't running yet, this script will start mpv and let it control thecurrent terminal. It will not write output to stdout/stderr, because thiswill typically just fill ~/.xsession-errors with garbage.mpv will terminate if there are no more files to play, and running the umpvscript after that will start a new mpv instance.Note: you can supply custom mpv path and options with the MPV environment variable. The environment variable will be split on whitespace, and the first item is used as path to mpv binary and the rest is passed as options _if_ the script starts mpv. If mpv is not started by the script (i.e. mpv is already running), this will be ignored."""import osimport shleximport socketimport stringimport subprocessimport sysfrom collections.abc import Iterablefrom typing import BinaryIOdef is_url(filename: str) -> bool: parts = filename.split("://", 1) if len(parts) < 2: return False # protocol prefix has no special characters => it's an URL allowed_symbols = string.ascii_letters + string.digits + "_" prefix = parts[0] return all(c in allowed_symbols for c in prefix)def get_socket_path() -> str: if os.name == "nt": return r"\\.\pipe\umpv" base_dir = ( os.getenv("UMPV_SOCKET_DIR") or os.getenv("XDG_RUNTIME_DIR") or os.getenv("HOME") or os.getenv("TMPDIR") ) if not base_dir: raise Exception("Could not determine a base directory for the socket. " "Ensure that one of the following environment variables is set: " "UMPV_SOCKET_DIR, XDG_RUNTIME_DIR, HOME or TMPDIR.") return os.path.join(base_dir, ".umpv")def send_files_to_mpv(conn: socket.socket | BinaryIO, files: Iterable[str]) -> None: try: send = conn.send if isinstance(conn, socket.socket) else conn.write for f in files: f = f.replace("\\", "\\\\").replace('"', '\\"').replace("\n", "\\n") send(f'raw loadfile "{f}" append-play\n'.encode()) except Exception: print("mpv is terminating or the connection was lost.", file=sys.stderr) sys.exit(1)def start_mpv(files: Iterable[str], socket_path: str) -> None: mpv = "mpv" if os.name != "nt" else "mpv.exe" mpv_command = shlex.split(os.getenv("MPV", mpv)) mpv_command.extend([ "--profile=builtin-pseudo-gui", f"--input-ipc-server={socket_path}", "--", ]) mpv_command.extend(files) subprocess.Popen(mpv_command, start_new_session=True)def main() -> None: files = (os.path.abspath(f) if not is_url(f) else f for f in sys.argv[1:]) socket_path = get_socket_path() try: if os.name == "nt": with open(socket_path, "r+b", buffering=0) as pipe: send_files_to_mpv(pipe, files) else: with socket.socket(socket.AF_UNIX) as sock: sock.connect(socket_path) send_files_to_mpv(sock, files) except (FileNotFoundError, ConnectionRefusedError): start_mpv(files, socket_path)if __name__ == "__main__": main()