sankalp
e7a7d2c47e
- Removed outdated TODO comment and placeholder signal definition that caused type conversion errors - Added Signal with explicit GObject.TYPE_INT64 argument type and correct parameter extraction using .get_int64() - Ensured reliable emission of seeked signal to upstream DBus handler
444 lines
14 KiB
Python
444 lines
14 KiB
Python
from typing import Literal, Optional
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from fabric.core.service import Property, Service, Signal
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from fabric.utils import Gio, GLib, logger, GObject
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from fabric.utils.helpers import (
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bulk_connect,
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clamp,
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pascal_case_to_snake_case,
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snake_case_to_kebab_case,
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)
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from gi.repository.GLib import Variant
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from utils.dbus_helper import GioDBusHelper
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MPRIS_MEDIAPLAYER_BUS_NAME = "org.mpris.MediaPlayer2"
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MPRIS_MEDIAPLAYER_BUS_PATH = "/org/mpris/MediaPlayer2"
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME = "org.mpris.MediaPlayer2.Player"
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# TODO Shuffle is broken because there is no CanShuffle property, it relies on can_control but thats not all inclusive
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class MprisPlayer(Service):
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@Signal
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def closed(self, value: bool) -> bool: ...
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@Signal
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def changed(self) -> None: ...
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seeked = Signal(name="seeked", arg_types=(GObject.TYPE_INT64,))
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@Property(str, "readable")
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def player_name(self):
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return self.bus_name.split(".", 3)[-1].split(".")[0]
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@Property(str, "readable")
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def playback_status(self) -> Literal["Playing", "Paused", "Stopped"]:
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# type: ignore
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return self._dbus_helper.proxy.get_cached_property(
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"PlaybackStatus"
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).get_string()
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@Property(str, "read-write", default_value="None")
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def loop_status(self) -> Literal["None", "Track", "Playlist"]:
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# type: ignore
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return self._dbus_helper.proxy.get_cached_property("LoopStatus").get_string()
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@loop_status.setter
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def loop_status(self, status: Literal["None", "Track", "Playlist"]) -> None:
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if self._dbus_helper.proxy.get_cached_property("LoopStatus") is None:
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return
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(
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self._dbus_helper.set_property(
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME,
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"LoopStatus",
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GLib.Variant("s", value=status),
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)
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if self.can_control
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else None
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)
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# TODO: Playback rate??? (Rate) idk i dont really see why someone would use this ngl
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@Property(bool, "read-write", default_value=False)
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def shuffle(self) -> bool:
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if self._dbus_helper.proxy.get_cached_property("Shuffle"):
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# type: ignore
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return self._dbus_helper.proxy.get_cached_property("Shuffle").get_boolean()
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return False
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@shuffle.setter
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def shuffle(self, is_shuffle: bool) -> None:
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if self._dbus_helper.proxy.get_cached_property("Shuffle") is None:
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return
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(
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self._dbus_helper.set_property(
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME,
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"Shuffle",
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GLib.Variant("b", value=is_shuffle),
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)
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if self.can_control
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else None
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)
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@Property(dict, "readable")
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def metadata(self) -> dict:
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prop: Variant | None = self._dbus_helper.proxy.get_cached_property("Metadata") # type: ignore
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return dict(prop) if prop else {} # type: ignore
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# RELY ON METADATA
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@Property(str, "readable")
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def arturl(self) -> str:
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return self.metadata.get("mpris:artUrl", "")
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@Property(int, "readable", default_value=0)
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def length(self) -> int:
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return self.metadata.get("mpris:length", 0)
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@Property(list, "readable")
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def artist(self) -> list:
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return self.metadata.get("xesam:artist", "")
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@Property(str, "readable")
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def album(self) -> str:
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return self.metadata.get("xesam:album", "")
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@Property(str, "readable")
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def title(self):
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return self.metadata.get("xesam:title", "")
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# END RELY ON METADATA
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@Property(float, "read-write")
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def volume(self) -> float:
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# type: ignore
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return self._dbus_helper.proxy.get_cached_property("Volume").get_double()
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@volume.setter
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def volume(self, volume: float) -> None:
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(
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self._dbus_helper.set_property(
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME,
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"Volume",
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GLib.Variant("d", clamp(value=volume, min_value=0.0, max_value=1.0)),
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)
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if self.can_control
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else None
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)
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@Property(int, "read-write", default_value=0)
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def position(self) -> int:
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# type: ignore
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return self._dbus_helper.proxy.get_cached_property("Position").get_int64()
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@position.setter
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def position(self, new_pos: int) -> None:
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self._dbus_helper.call_method(
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self.bus_name,
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MPRIS_MEDIAPLAYER_BUS_PATH,
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME,
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"SetPosition",
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GLib.Variant(
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"(ox)",
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(self.metadata["mpris:trackid"], new_pos),
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),
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)
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# TODO: consider MinimumRate, MaximumRate
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@Property(bool, "readable", default_value=False)
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def can_go_next(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property("CanGoNext").get_boolean()
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@Property(bool, "readable", default_value=False)
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def can_go_previous(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property(
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"CanGoPrevious"
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).get_boolean()
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@Property(bool, "readable", default_value=False)
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def can_play(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property("CanPlay").get_boolean()
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@Property(bool, "readable", default_value=False)
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def can_pause(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property("CanPause").get_boolean()
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@Property(bool, "readable", default_value=False)
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def can_seek(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property("CanSeek").get_boolean()
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@Property(bool, "readable", default_value=False)
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def can_control(self) -> bool:
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return self._dbus_helper.proxy.get_cached_property("CanControl").get_boolean()
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def __init__(self, bus_name: str, **kwargs):
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super().__init__(**kwargs)
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self.bus_name: str = bus_name
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self._dbus_helper: GioDBusHelper | None = None
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# Ahoy!
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self.do_register()
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def do_register(self) -> None: # the bus id
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self._dbus_helper = GioDBusHelper(
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self.bus_name,
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MPRIS_MEDIAPLAYER_BUS_PATH,
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MPRIS_MEDIAPLAYER_PLAYER_BUS_NAME,
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Gio.BusType.SESSION,
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)
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if not self._dbus_helper.proxy:
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return
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bulk_connect(
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self._dbus_helper.proxy,
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{
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"g-properties-changed": self._do_handle_properties_changed,
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"g-signal": self._do_handle_signal_changed,
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"notify::g-name-owner": self._on_name_owner_change,
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},
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)
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# Update all properties to start
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self.update_all_properties()
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def update_all_properties(self):
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def on_update_finish(proxy, task):
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try:
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self._do_handle_properties_changed(
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self._dbus_helper.proxy, proxy.call_finish(task)[0], ""
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)
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except Exception:
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logger.error(f"[MPRIS-{self.bus_name}] Failed to retrieve properties")
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self._dbus_helper.proxy.call(
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"org.freedesktop.DBus.Properties.GetAll",
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GLib.Variant.new_tuple(
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GLib.Variant.new_string("org.mpris.MediaPlayer2.Player")
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),
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Gio.DBusCallFlags.NONE,
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-1,
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None,
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on_update_finish,
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) # User data
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def _do_handle_properties_changed(
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self, proxy: Gio.DBusProxy, changed_properties, invalidated_properties: str
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):
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for prop_name in set(
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[
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snake_case_to_kebab_case(pascal_case_to_snake_case(x))
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for x in changed_properties.keys()
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]
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).intersection([prop.name for prop in self.get_properties()]):
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self.notifier(prop_name)
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if prop_name == "metadata":
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for sub_prop in ["arturl", "album", "artist", "length", "title"]:
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self.notifier(sub_prop)
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def notifier(self, prop):
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self.notify(prop)
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self.changed()
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def _do_handle_signal_changed(
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self,
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proxy: Gio.DBusProxy,
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sender_name: str,
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signal_name: str,
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params: tuple[GLib.Variant],
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):
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# Only One Signal for Mpris
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if signal_name == "Seeked":
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self.seeked(params[0].get_int64())
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def _proxy_call(self, method_name: str, parameter: Optional[GLib.Variant]):
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self._dbus_helper.proxy.call(
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method_name,
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parameter,
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Gio.DBusCallFlags.NONE,
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self._dbus_helper.proxy.get_default_timeout(),
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None,
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self._do_method_callback,
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pascal_case_to_snake_case(method_name),
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)
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def _do_method_callback(self, _, res: Gio.AsyncResult, user_data):
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try:
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self._dbus_helper.proxy.call_finish(res)
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except Exception as e:
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print(e)
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logger.error(
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f"[MPRIS-{self.bus_name}] Failed to invoke method: {user_data}"
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)
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def _on_name_owner_change(self, proxy: Gio.DBusProxy, _):
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if not self._dbus_helper.proxy.get_name_owner():
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# proxy is automatically destroyed
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self.closed(True)
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# Methods
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def next(self):
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self._proxy_call("Next", None) if self.can_go_next else None
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def previous(self):
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self._proxy_call("Previous", None) if self.can_go_previous else None
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def pause(self):
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self._proxy_call("Pause", None) if self.can_pause else None
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def play_pause(self):
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(
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self._proxy_call("PlayPause", None)
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if self.can_pause
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else logger.error(
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f"[MPRIS-{self.bus_name}] `play_pause` is not supported by this player"
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)
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)
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def stop(self):
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(
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self._proxy_call("Stop", None)
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if self.can_control
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else logger.error(
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f"[MPRIS-{self.bus_name}] `stop` is not supported by this player"
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)
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)
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def play(self):
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self._proxy_call("Play", None) if self.can_play else None
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def seek(self, time_in_us: int):
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(
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self._proxy_call("Seek", GLib.Variant.new_int64(time_in_us))
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if self.can_seek
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else None
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)
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# No need for SetPositition, that is handled by the setter
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# Ignoring OpenUri
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class MprisPlayerManager(Service):
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@Signal
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def player_appeared(self, player: MprisPlayer) -> MprisPlayer:
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logger.info(f"[MPRIS] Found Player: {player.bus_name}")
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self._players[player.bus_name] = player
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self.notify("players")
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return player
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@Signal
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def player_vanished(self, bus_name: str) -> str:
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logger.info(f"[MPRIS] Lost Player: {bus_name}")
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self._players.pop(bus_name)
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self.notify("players")
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return bus_name
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@Property(dict[str, MprisPlayer], "readable")
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def players(self):
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return self._players
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def __init__(self, **kwargs):
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super().__init__(**kwargs)
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self._players: dict[str, MprisPlayer] = {}
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self._dbus_helper: GioDBusHelper | None = None
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self._subscription_id: int | None = None
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# ahoy
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self.do_register()
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def do_register(self):
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self._dbus_helper = GioDBusHelper(
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"org.freedesktop.DBus",
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"/org/freedesktop/DBus",
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"org.freedesktop.DBus",
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Gio.BusType.SESSION,
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)
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self._subscription_id = self._dbus_helper.listen_signal(
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"NameOwnerChanged",
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self.on_name_owner_change,
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"org.freedesktop.DBus",
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)
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# Defer player discovery to avoid blocking initialization
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GLib.idle_add(self._get_available_players)
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def destroy(self):
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"""Unsubscribe bus signal and clear players."""
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try:
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if self._subscription_id is not None and self._dbus_helper is not None:
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self._dbus_helper.unsubscribe_signal(self._subscription_id)
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self._subscription_id = None
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except Exception:
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pass
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try:
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# notify vanish for all remaining players
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for bus_name in list(self._players.keys()):
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try:
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self.player_vanished(bus_name)
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except Exception:
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pass
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self._players.clear()
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except Exception:
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pass
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def _list_names_callback(
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self,
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proxy: Gio.DBusProxy,
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res: Gio.AsyncResult,
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):
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try:
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reply = proxy.call_finish(res)
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for player in filter(
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lambda x: x.startswith(MPRIS_MEDIAPLAYER_BUS_NAME),
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reply.get_child_value(0), # type: ignore
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):
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self.do_handle_new_player(player)
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except Exception:
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logger.error("[MPRIS MANAGER] Failed to ListNames")
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def _get_available_players(self):
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self._dbus_helper.proxy.call(
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"ListNames",
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GLib.Variant("()", ()),
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Gio.DBusCallFlags.NONE,
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-1,
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None,
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self._list_names_callback,
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)
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def on_name_owner_change(
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self,
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conn,
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sender_name: str,
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object_path: str,
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interface_name: str,
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signal_name: str,
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user_data,
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*params,
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) -> None:
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name, old_owner, new_owner = user_data
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if not name.startswith(MPRIS_MEDIAPLAYER_BUS_NAME):
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return
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if old_owner == "" and new_owner != "":
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self.do_handle_new_player(name)
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def do_handle_new_player(self, bus_name: str):
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if bus_name in self._players.keys():
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return
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player = MprisPlayer(bus_name)
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player.connect(
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"closed",
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lambda *_: self.player_vanished(bus_name),
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)
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self.player_appeared(player)
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