e71f5623a7
Reformat every module with autopep8 and hand-tune the remaining long lines so that `flake8` passes with default settings (max line length 79). No behavior changes: long f-strings, messages, QSS/Textual CSS rules and argument lists are only wrapped or split, an unused import and an unused local are dropped, and dbus-next D-Bus signature annotations carry targeted `# noqa` comments.
380 lines
13 KiB
Python
380 lines
13 KiB
Python
"""MPRIS (D-Bus) интеграция: система видит плеер как источник звука.
|
||
|
||
Благодаря этому плеером можно управлять из панели GNOME (расширение
|
||
media-controls), из `playerctl` и т.п.: play/pause, следующий/предыдущий,
|
||
перемотка, метаданные и обложка.
|
||
|
||
Модуль необязательный: если нет `dbus-next` или сессионного D-Bus, всё
|
||
превращается в no-op, и приложения работают как обычно.
|
||
"""
|
||
|
||
import asyncio
|
||
import logging
|
||
import threading
|
||
from typing import Any, Callable
|
||
|
||
log = logging.getLogger("mpris")
|
||
|
||
try: # pragma: no cover - зависит от окружения
|
||
from dbus_next import Variant
|
||
from dbus_next.aio import MessageBus
|
||
from dbus_next.constants import PropertyAccess
|
||
from dbus_next.service import (
|
||
ServiceInterface,
|
||
dbus_property,
|
||
method,
|
||
signal,
|
||
)
|
||
|
||
HAVE_DBUS = True
|
||
except Exception: # pragma: no cover
|
||
HAVE_DBUS = False
|
||
|
||
BUS_NAME = "org.mpris.MediaPlayer2.mtsmusic"
|
||
OBJECT_PATH = "/org/mpris/MediaPlayer2"
|
||
|
||
|
||
def track_object_path(track_id: Any) -> str:
|
||
"""D-Bus object path для mpris:trackid (только [A-Za-z0-9_])."""
|
||
safe = "".join(ch if ch.isalnum()
|
||
else "_" for ch in str(track_id)) or "unknown"
|
||
return f"/mtsmusic/track/{safe}"
|
||
|
||
|
||
if HAVE_DBUS:
|
||
|
||
class _RootInterface(ServiceInterface):
|
||
def __init__(self, service: "MprisService"):
|
||
super().__init__("org.mpris.MediaPlayer2")
|
||
self._svc = service
|
||
|
||
@method()
|
||
def Raise(self):
|
||
self._svc.dispatch("raise")
|
||
|
||
@method()
|
||
def Quit(self):
|
||
self._svc.dispatch("quit")
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def Identity(self) -> "s": # noqa: F821
|
||
return self._svc.identity
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def DesktopEntry(self) -> "s": # noqa: F821
|
||
return self._svc.desktop_entry
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanQuit(self) -> "b": # noqa: F821
|
||
return True
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanRaise(self) -> "b": # noqa: F821
|
||
return True
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def HasTrackList(self) -> "b": # noqa: F821
|
||
return False
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def SupportedUriSchemes(self) -> "as": # noqa: F722
|
||
return []
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def SupportedMimeTypes(self) -> "as": # noqa: F722
|
||
return []
|
||
|
||
class _PlayerInterface(ServiceInterface):
|
||
def __init__(self, service: "MprisService"):
|
||
super().__init__("org.mpris.MediaPlayer2.Player")
|
||
self._svc = service
|
||
|
||
# -- методы ------------------------------------------------------
|
||
@method()
|
||
def Play(self):
|
||
self._svc.dispatch("play")
|
||
|
||
@method()
|
||
def Pause(self):
|
||
self._svc.dispatch("pause")
|
||
|
||
@method()
|
||
def PlayPause(self):
|
||
self._svc.dispatch("play_pause")
|
||
|
||
@method()
|
||
def Stop(self):
|
||
self._svc.dispatch("stop")
|
||
|
||
@method()
|
||
def Next(self):
|
||
self._svc.dispatch("next")
|
||
|
||
@method()
|
||
def Previous(self):
|
||
self._svc.dispatch("previous")
|
||
|
||
@method()
|
||
def Seek(self, offset: "x"): # noqa: F821
|
||
self._svc.dispatch("seek", int(offset))
|
||
|
||
@method()
|
||
def SetPosition(self, track_id: "o", position: "x"): # noqa: F821
|
||
self._svc.dispatch("set_position", str(track_id), int(position))
|
||
|
||
@method()
|
||
def OpenUri(self, uri: "s"): # noqa: F821
|
||
self._svc.dispatch("open_uri", str(uri))
|
||
|
||
# -- сигналы -----------------------------------------------------
|
||
@signal()
|
||
def Seeked(self, position: "x") -> "x": # noqa: F821
|
||
return position
|
||
|
||
# -- свойства ----------------------------------------------------
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def PlaybackStatus(self) -> "s": # noqa: F821
|
||
return self._svc.playback_status
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def Metadata(self) -> "a{sv}": # noqa: F722
|
||
return self._svc.metadata
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def Position(self) -> "x": # noqa: F821
|
||
return int(self._svc.position)
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def MinimumRate(self) -> "d": # noqa: F821
|
||
return 1.0
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def MaximumRate(self) -> "d": # noqa: F821
|
||
return 1.0
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanGoNext(self) -> "b": # noqa: F821
|
||
return self._svc.can_next
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanGoPrevious(self) -> "b": # noqa: F821
|
||
return self._svc.can_previous
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanPlay(self) -> "b": # noqa: F821
|
||
return self._svc.can_play
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanPause(self) -> "b": # noqa: F821
|
||
return self._svc.can_pause
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanSeek(self) -> "b": # noqa: F821
|
||
return self._svc.can_seek
|
||
|
||
@dbus_property(access=PropertyAccess.READ)
|
||
def CanControl(self) -> "b": # noqa: F821
|
||
return True
|
||
|
||
@dbus_property(access=PropertyAccess.READWRITE)
|
||
def Volume(self) -> "d": # noqa: F821
|
||
return float(self._svc.volume)
|
||
|
||
@Volume.setter
|
||
def Volume(self, value: "d"): # noqa: F821
|
||
self._svc.dispatch("volume", float(value))
|
||
|
||
@dbus_property(access=PropertyAccess.READWRITE)
|
||
def LoopStatus(self) -> "s": # noqa: F821
|
||
return self._svc.loop_status
|
||
|
||
@LoopStatus.setter
|
||
def LoopStatus(self, value: "s"): # noqa: F821
|
||
self._svc.loop_status = str(value)
|
||
|
||
@dbus_property(access=PropertyAccess.READWRITE)
|
||
def Shuffle(self) -> "b": # noqa: F821
|
||
return self._svc.shuffle
|
||
|
||
@Shuffle.setter
|
||
def Shuffle(self, value: "b"): # noqa: F821
|
||
self._svc.shuffle = bool(value)
|
||
|
||
@dbus_property(access=PropertyAccess.READWRITE)
|
||
def Rate(self) -> "d": # noqa: F821
|
||
return float(self._svc.rate)
|
||
|
||
@Rate.setter
|
||
def Rate(self, value: "d"): # noqa: F821
|
||
self._svc.rate = float(value)
|
||
|
||
|
||
class MprisService:
|
||
"""Публикует MPRIS на сессионном D-Bus; состояние задаётся снаружи.
|
||
|
||
``handler`` — объект с необязательными методами ``on_play``,
|
||
``on_pause``, ``on_play_pause``, ``on_next``, ``on_previous``,
|
||
``on_stop``, ``on_seek(offset_us)``, ``on_set_position(track_path, us)``,
|
||
``on_volume(value)``, ``on_raise()``, ``on_quit()``.
|
||
"""
|
||
|
||
def __init__(
|
||
self,
|
||
handler: Any,
|
||
identity: str = "MTS Music",
|
||
desktop_entry: str = "mts-music",
|
||
):
|
||
self.handler = handler
|
||
self.identity = identity
|
||
self.desktop_entry = desktop_entry
|
||
self.enabled = False
|
||
|
||
self.playback_status = "Stopped"
|
||
self.metadata: dict[str, Any] = {}
|
||
self.position = 0
|
||
self.volume = 1.0
|
||
self.can_next = False
|
||
self.can_previous = False
|
||
self.can_play = True
|
||
self.can_pause = True
|
||
self.can_seek = False
|
||
self.loop_status = "None"
|
||
self.shuffle = False
|
||
self.rate = 1.0
|
||
|
||
self._loop: asyncio.AbstractEventLoop | None = None
|
||
self._bus: Any = None
|
||
self._player: Any = None
|
||
self._root: Any = None
|
||
self._thread: threading.Thread | None = None
|
||
|
||
if HAVE_DBUS:
|
||
self._player = _PlayerInterface(self)
|
||
self._root = _RootInterface(self)
|
||
self._thread = threading.Thread(
|
||
target=self._run, name="mpris-dbus", daemon=True
|
||
)
|
||
self._thread.start()
|
||
|
||
# -- жизненный цикл ---------------------------------------------------
|
||
|
||
def _run(self):
|
||
loop = asyncio.new_event_loop()
|
||
self._loop = loop
|
||
asyncio.set_event_loop(loop)
|
||
try:
|
||
loop.run_until_complete(self._connect())
|
||
loop.run_forever()
|
||
except Exception: # pragma: no cover - окружение без D-Bus
|
||
log.debug("MPRIS недоступен", exc_info=True)
|
||
|
||
async def _connect(self):
|
||
self._bus = await MessageBus().connect()
|
||
self._bus.export(OBJECT_PATH, self._player)
|
||
self._bus.export(OBJECT_PATH, self._root)
|
||
await self._bus.request_name(BUS_NAME)
|
||
self.enabled = True
|
||
log.debug("MPRIS зарегистрирован: %s", BUS_NAME)
|
||
|
||
def close(self):
|
||
if self._loop and self._loop.is_running():
|
||
self._loop.call_soon_threadsafe(self._loop.stop)
|
||
|
||
# -- диспетчеризация команд из D-Bus ---------------------------------
|
||
|
||
def dispatch(self, action: str, *args: Any):
|
||
callback: Callable[..., Any] | None = getattr(
|
||
self.handler, "on_" + action, None
|
||
)
|
||
if callback is None:
|
||
return
|
||
try:
|
||
callback(*args)
|
||
except Exception: # pragma: no cover
|
||
log.debug("ошибка обработчика MPRIS: %s", action, exc_info=True)
|
||
|
||
def _emit(self, changed: dict[str, Any]):
|
||
if not (self.enabled and self._loop):
|
||
return
|
||
self._loop.call_soon_threadsafe(
|
||
self._player.emit_properties_changed, changed)
|
||
|
||
# -- обновление состояния (из основного потока) ----------------------
|
||
|
||
def update_playback_status(self, status: str):
|
||
if status == self.playback_status:
|
||
return
|
||
self.playback_status = status
|
||
self.can_seek = status != "Stopped" or self.can_seek
|
||
self._emit({"PlaybackStatus": status})
|
||
|
||
def update_metadata(
|
||
self,
|
||
track_id: Any,
|
||
title: str = "",
|
||
artist: str = "",
|
||
album: str = "",
|
||
duration_ms: int = 0,
|
||
art_url: str = "",
|
||
):
|
||
metadata: dict[str, Any] = {
|
||
"mpris:trackid": Variant("o", track_object_path(track_id)),
|
||
"mpris:length": Variant("x", int(duration_ms) * 1000),
|
||
"xesam:title": Variant("s", title or ""),
|
||
"xesam:artist": Variant("as", [artist] if artist else []),
|
||
"xesam:album": Variant("s", album or ""),
|
||
}
|
||
if art_url:
|
||
metadata["mpris:artUrl"] = Variant("s", art_url)
|
||
self.metadata = metadata
|
||
self._emit({"Metadata": metadata})
|
||
|
||
def clear_metadata(self):
|
||
self.metadata = {}
|
||
self._emit({"Metadata": self.metadata})
|
||
|
||
def update_position(self, position_us: int):
|
||
# Position в MPRIS не рассылается через PropertiesChanged — клиенты
|
||
# читают его сами (или ориентируются на сигнал Seeked).
|
||
self.position = max(0, int(position_us))
|
||
|
||
def notify_seeked(self, position_us: int):
|
||
self.update_position(position_us)
|
||
if self.enabled and self._loop:
|
||
self._loop.call_soon_threadsafe(
|
||
self._player.Seeked, int(position_us))
|
||
|
||
def update_volume(self, volume: float):
|
||
volume = max(0.0, min(1.0, float(volume)))
|
||
if abs(volume - self.volume) < 1e-4:
|
||
return
|
||
self.volume = volume
|
||
self._emit({"Volume": volume})
|
||
|
||
def update_capabilities(
|
||
self,
|
||
can_next: bool | None = None,
|
||
can_previous: bool | None = None,
|
||
can_play: bool | None = None,
|
||
can_pause: bool | None = None,
|
||
can_seek: bool | None = None,
|
||
):
|
||
changed: dict[str, Any] = {}
|
||
if can_next is not None and can_next != self.can_next:
|
||
self.can_next = can_next
|
||
changed["CanGoNext"] = can_next
|
||
if can_previous is not None and can_previous != self.can_previous:
|
||
self.can_previous = can_previous
|
||
changed["CanGoPrevious"] = can_previous
|
||
if can_play is not None and can_play != self.can_play:
|
||
self.can_play = can_play
|
||
changed["CanPlay"] = can_play
|
||
if can_pause is not None and can_pause != self.can_pause:
|
||
self.can_pause = can_pause
|
||
changed["CanPause"] = can_pause
|
||
if can_seek is not None and can_seek != self.can_seek:
|
||
self.can_seek = can_seek
|
||
changed["CanSeek"] = can_seek
|
||
if changed:
|
||
self._emit(changed)
|