music-assistant-server

1"""
2Announcements Mixin for the Player Controller.
3
4Handles playback of announcements (such as TTS messages) on a player: preparing the
5player, handing it the announcement, waiting for it to finish and restoring whatever
6the player was doing before.
7
8This module provides the AnnouncementsMixin class which is inherited by
9PlayerController to add announcement capabilities. The audio itself is rendered and
10served by the streams controller (see controllers/streams/announcements.py).
11"""
12
13from __future__ import annotations
14
15import asyncio
16import logging
17import time
18from math import ceil
19from typing import TYPE_CHECKING, cast
20
21from music_assistant_models.auth import Scope
22from music_assistant_models.constants import PLAYER_CONTROL_NATIVE, PLAYER_CONTROL_NONE
23from music_assistant_models.enums import (
24    MediaType,
25    PlaybackState,
26    PlayerFeature,
27    PlayerType,
28)
29from music_assistant_models.errors import PlayerCommandFailed
30from music_assistant_models.player import PlayerMedia
31
32from music_assistant.constants import (
33    ANNOUNCE_ALERT_FILE,
34    ATTR_ANNOUNCEMENT_IN_PROGRESS,
35    CONF_ANNOUNCE_TTS_ENGINE,
36    CONF_ENTRY_ANNOUNCE_VOLUME,
37    CONF_ENTRY_ANNOUNCE_VOLUME_MAX,
38    CONF_ENTRY_ANNOUNCE_VOLUME_MIN,
39    CONF_ENTRY_ANNOUNCE_VOLUME_STRATEGY,
40    CONF_ENTRY_TTS_PRE_ANNOUNCE,
41    CONF_PRE_ANNOUNCE_CHIME_URL,
42)
43from music_assistant.controllers.streams.announcements import MAX_CLIP_SECONDS
44from music_assistant.helpers.api import api_command
45from music_assistant.helpers.plugin_engines import (
46    engine_display_name,
47    get_tts_engines,
48    resolve_tts_engine,
49    select_core_tts_engine,
50)
51from music_assistant.helpers.tts import (
52    query_tts_engine_with_language_fallback,
53    resolve_tts_stream_path,
54)
55from music_assistant.helpers.util import TaskManager, validate_announcement_chime_url
56from music_assistant.models.player import Player
57
58from .constants import PlayerLockPurpose
59from .helpers import AnnounceData, handle_player_command
60
61if TYPE_CHECKING:
62    from collections.abc import Iterator
63
64    from music_assistant import MusicAssistant
65
66# the caller waits for this command and it holds the player's playback lock while it runs,
67# so a wedged engine must give up well before the generic (background) engine timeout
68ANNOUNCEMENT_TTS_TIMEOUT = 30
69
70
71class AnnouncementsMixin:
72    """
73    Mixin class providing announcement playback for PlayerController.
74
75    Handles:
76    - Resolving the pre-announce chime and announcement volume from configuration
77    - Forwarding a group announcement to its individual members
78    - Native announcement support (on the player itself or a linked protocol)
79    - The fallback implementation for players without native support
80
81    This mixin expects to be mixed with a class that provides:
82    - mass: MusicAssistant instance
83    - logger: logging.Logger instance
84    - get_player(): method to get a player by ID
85    - iter_group_members(): method to iterate the members of a group player
86    - _get_control_target(): method to resolve the player to send a command to
87    - the _handle_cmd_* / cmd_* playback and grouping commands used below
88    """
89
90    # Type hints for attributes provided by the class this mixin is used with
91    if TYPE_CHECKING:
92        mass: MusicAssistant
93        logger: logging.Logger
94        domain: str
95        _players: dict[str, Player]
96
97        def get_player(  # noqa: D102
98            self, player_id: str, raise_unavailable: bool = False
99        ) -> Player | None: ...
100
101        def iter_group_members(  # noqa: D102
102            self,
103            group_player: Player,
104            only_powered: bool = False,
105            only_playing: bool = False,
106            active_only: bool = False,
107            exclude_self: bool = True,
108        ) -> Iterator[Player]: ...
109
110        def _get_control_target(
111            self,
112            player: Player,
113            required_feature: PlayerFeature,
114            require_active: bool = False,
115        ) -> Player | None: ...
116
117        async def _wait_for_playback_state(
118            self,
119            player: Player,
120            wanted_state: PlaybackState,
121            timeout: float,
122            minimal_time: float = 0,
123        ) -> None: ...
124
125        async def _handle_play_media(self, player_id: str, media: PlayerMedia) -> None: ...
126
127        async def _handle_cmd_stop(self, player_id: str) -> None: ...
128
129        async def _handle_cmd_volume_set(
130            self, player_id: str, volume_level: int, *, record_target: bool = True
131        ) -> None: ...
132
133        async def _handle_cmd_volume_mute(
134            self, player: Player, mute_control: str, muted: bool
135        ) -> None: ...
136
137        async def _handle_cmd_power(
138            self, player_id: str, powered: bool, skip_auto_play: bool = False
139        ) -> None: ...
140
141        async def _handle_cmd_resume(
142            self, player_id: str, source: str | None = None, media: PlayerMedia | None = None
143        ) -> None: ...
144
145        async def cmd_play(self, player_id: str) -> None: ...  # noqa: D102
146
147        async def cmd_ungroup(self, player_id: str) -> None: ...  # noqa: D102
148
149        async def cmd_set_members(  # noqa: D102
150            self,
151            target_player: str,
152            player_ids_to_add: list[str] | None = None,
153            player_ids_to_remove: list[str] | None = None,
154        ) -> None: ...
155
156    # handle_player_command is typed against PlayerController, which this mixin only
157    # becomes once mixed in; the attributes it needs are declared in the block above.
158    # mypy reports that on the outermost decorator, hence the ignore below.
159    @api_command("players/cmd/play_announcement", required_scope=Scope.PLAYERS_CONTROL)  # type: ignore[type-var]
160    @handle_player_command(lock=PlayerLockPurpose.PLAYBACK)
161    async def play_announcement(
162        self,
163        player_id: str,
164        url: str | None = None,
165        pre_announce: bool | None = None,
166        volume_level: int | None = None,
167        pre_announce_url: str | None = None,
168        message: str | None = None,
169        tts_engine: str | None = None,
170        language: str | None = None,
171    ) -> None:
172        """
173        Handle playback of an announcement on given player.
174
175        Provide either a url to play or a message to speak, not both.
176
177        :param player_id: Player ID of the player to handle the command.
178        :param url: URL of the announcement to play.
179        :param pre_announce: Optional bool if pre-announce should be used.
180        :param volume_level: Optional volume level to set for the announcement.
181        :param pre_announce_url: Optional custom URL to use for the pre-announce chime.
182        :param message: Text to speak as the announcement, rendered by a TTS engine.
183        :param tts_engine: Optional uid of the TTS engine to speak the message,
184            defaults to the engine configured on the player controller.
185        :param language: Optional language code to speak the message in (e.g. 'nl-NL'),
186            omit to let the engine speak in the language it is configured for.
187        """
188        player = self.get_player(player_id, True)
189        assert player is not None  # for type checking
190        if not url and not message:
191            raise PlayerCommandFailed("Either a url or a message is required.")
192        if url and message:
193            raise PlayerCommandFailed("Provide either a url or a message, not both.")
194        if tts_engine and not message:
195            raise PlayerCommandFailed("A tts_engine can only be used to speak a message.")
196        if language and not message:
197            raise PlayerCommandFailed("A language can only be used to speak a message.")
198        if url and not url.startswith("http"):
199            raise PlayerCommandFailed("Only URLs are supported for announcements")
200        if (
201            pre_announce
202            and pre_announce_url
203            and not validate_announcement_chime_url(pre_announce_url)
204        ):
205            raise PlayerCommandFailed("Invalid pre-announce chime URL specified.")
206        # a spoken message is rendered up front so everything below - including each member of
207        # a group - plays the resulting audio instead of speaking the text again
208        is_speech = bool(message)
209        if message:
210            url = await self._render_announcement_message(message, tts_engine, language)
211        assert url is not None  # for type checking
212        # determine pre-announce from (group)player config
213        if pre_announce is None and (is_speech or "tts" in url):
214            conf_pre_announce = self.mass.config.get_raw_player_config_value(
215                player_id,
216                CONF_ENTRY_TTS_PRE_ANNOUNCE.key,
217                CONF_ENTRY_TTS_PRE_ANNOUNCE.default_value,
218            )
219            pre_announce = cast("bool", conf_pre_announce)
220        if pre_announce_url is None:
221            if conf_pre_announce_url := self.mass.config.get_raw_player_config_value(
222                player_id,
223                CONF_PRE_ANNOUNCE_CHIME_URL,
224            ):
225                # player default custom chime url
226                pre_announce_url = cast("str", conf_pre_announce_url)
227            else:
228                # use global default chime url
229                pre_announce_url = ANNOUNCE_ALERT_FILE
230        announce_data = AnnounceData(
231            announcement_url=url,
232            pre_announce=bool(pre_announce),
233            pre_announce_url=pre_announce_url,
234            # filled in below, once we know which player fetches the stream
235            announce_player_id=None,
236        )
237        # Register right away, so the audio is (nearly always fully) rendered by the time
238        # the player is ready for it. The render is shared by everything that consumes
239        # this announcement, including all members of a group.
240        render = self.mass.streams.announcement_renderer.register(player_id, announce_data)
241        try:
242            # mark announcement_in_progress on player
243            player.extra_data[ATTR_ANNOUNCEMENT_IN_PROGRESS] = True
244            # if player type is group with all members supporting announcements,
245            # we forward the request to each individual player
246            if player.state.type == PlayerType.GROUP and (
247                all(
248                    PlayerFeature.PLAY_ANNOUNCEMENT in x.state.supported_features
249                    for x in self.iter_group_members(player)
250                )
251            ):
252                # forward the request to each individual player
253                async with TaskManager(self.mass) as tg:
254                    for group_member in player.state.group_members:
255                        tg.create_task(
256                            self.play_announcement(
257                                group_member,
258                                url=url,
259                                pre_announce=pre_announce,
260                                volume_level=volume_level,
261                                pre_announce_url=pre_announce_url,
262                            )
263                        )
264                return
265            self.logger.info(
266                "Playback announcement to player %s (with pre-announce: %s): %s",
267                player.state.name,
268                pre_announce,
269                url,
270            )
271            announce_player = self._resolve_announce_player(player)
272            native_announce_support = announce_player is not None
273            if announce_player is None:
274                announce_player = player
275            # create a PlayerMedia object for the announcement so
276            # we can send a regular play-media call downstream
277            announce_data["announce_player_id"] = (
278                announce_player.player_id if native_announce_support else None
279            )
280            announcement = PlayerMedia(
281                uri=self.mass.streams.get_announcement_url(player_id),
282                media_type=MediaType.ANNOUNCEMENT,
283                title="Announcement",
284                custom_data=dict(announce_data),
285            )
286            # handle native announce support (player or linked protocol)
287            if native_announce_support:
288                # hand the url to the player as soon as there is audio to serve from;
289                # its exact length is resolved further downstream, while it plays
290                if not await render.wait_ready():
291                    self.logger.warning(
292                        "Announcement to player %s - no audio available for %s",
293                        player.state.name,
294                        url,
295                    )
296                await self._play_native_announcement(
297                    player, announce_player, announcement, volume_level
298                )
299                return
300            # use fallback/default implementation
301            await self._play_announcement(player, announcement, volume_level)
302        finally:
303            player.extra_data[ATTR_ANNOUNCEMENT_IN_PROGRESS] = False
304            await self.mass.streams.announcement_renderer.unregister(player_id, render)
305
306    @api_command("players/tts_engines", required_scope=Scope.PLAYERS_CONTROL)
307    async def get_announcement_tts_engines(self) -> list[dict[str, str]]:
308        """Return the TTS engines that can speak an announcement."""
309        return [
310            {"uid": engine.uid, "name": engine_display_name(engine)}
311            for engine in await get_tts_engines(self.mass)
312        ]
313
314    def get_announcement_volume(self, player_id: str, volume_override: int | None) -> int | None:
315        """
316        Get the (player specific) volume for a announcement.
317
318        :param player_id: The player the announcement is played on.
319        :param volume_override: Volume level that overrides the configured strategy.
320        """
321        volume_strategy = self.mass.config.get_raw_player_config_value(
322            player_id,
323            CONF_ENTRY_ANNOUNCE_VOLUME_STRATEGY.key,
324            CONF_ENTRY_ANNOUNCE_VOLUME_STRATEGY.default_value,
325        )
326        volume_strategy_volume = self.mass.config.get_raw_player_config_value(
327            player_id,
328            CONF_ENTRY_ANNOUNCE_VOLUME.key,
329            CONF_ENTRY_ANNOUNCE_VOLUME.default_value,
330        )
331        if volume_strategy == "none":
332            return None
333        volume_level = volume_override
334        if volume_level is None and volume_strategy == "absolute":
335            volume_level = int(cast("float", volume_strategy_volume))
336        elif volume_level is None and volume_strategy == "relative":
337            if (player := self.get_player(player_id)) and player.state.volume_level is not None:
338                volume_level = int(
339                    player.state.volume_level + cast("float", volume_strategy_volume)
340                )
341        elif volume_level is None and volume_strategy == "percentual":
342            if (player := self.get_player(player_id)) and player.state.volume_level is not None:
343                percentual = (player.state.volume_level / 100) * cast(
344                    "float", volume_strategy_volume
345                )
346                volume_level = int(player.state.volume_level + percentual)
347        if volume_level is not None:
348            announce_volume_min = cast(
349                "float",
350                self.mass.config.get_raw_player_config_value(
351                    player_id,
352                    CONF_ENTRY_ANNOUNCE_VOLUME_MIN.key,
353                    CONF_ENTRY_ANNOUNCE_VOLUME_MIN.default_value,
354                ),
355            )
356            volume_level = max(int(announce_volume_min), volume_level)
357            announce_volume_max = cast(
358                "float",
359                self.mass.config.get_raw_player_config_value(
360                    player_id,
361                    CONF_ENTRY_ANNOUNCE_VOLUME_MAX.key,
362                    CONF_ENTRY_ANNOUNCE_VOLUME_MAX.default_value,
363                ),
364            )
365            volume_level = min(int(announce_volume_max), volume_level)
366        return None if volume_level is None else int(volume_level)
367
368    def _resolve_announce_player(self, player: Player) -> Player | None:
369        """
370        Return the player (or linked protocol) that plays an announcement natively.
371
372        Returns None when nothing in the chain announces natively, so the caller has to
373        fall back to the default implementation.
374
375        :param player: The player the announcement is played on.
376        """
377        if announce_player := self._get_control_target(
378            player,
379            required_feature=PlayerFeature.PLAY_ANNOUNCEMENT,
380            require_active=True,
381        ):
382            # The output that is ACTIVELY rendering can announce: the
383            # announcement rides the same audio path as the music (e.g. a
384            # Sonos playing through its AirPlay child gets the clip mixed
385            # into that live stream, in sync with the rest of the group)
386            # instead of a second mechanism firing beside the playback.
387            return announce_player
388        if PlayerFeature.PLAY_ANNOUNCEMENT in player.supported_features:
389            # Not playing through an announce-capable output: the player's
390            # own native support (e.g. Sonos audioClip, which overlays the
391            # clip on whatever source is playing) is the next-best path.
392            return player
393        if player.state.playback_state != PlaybackState.PLAYING:
394            # An idle player may announce through any linked protocol. A
395            # PLAYING player deliberately gets no such fallback: routing to
396            # an idle linked protocol (e.g. the AirPlay child of a WiiM
397            # playing natively) would seize the device from the active
398            # output, with nothing restoring that playback afterwards.
399            # The pick is deliberately not published as the active output
400            # protocol: the player would then mirror that protocol's playback
401            # state, report PLAYING for the length of the clip and so fail
402            # the check above on the next announcement.
403            return self._get_control_target(
404                player,
405                required_feature=PlayerFeature.PLAY_ANNOUNCEMENT,
406                require_active=False,
407            )
408        return None
409
410    async def _render_announcement_message(
411        self, message: str, tts_engine: str | None, language: str | None
412    ) -> str:
413        """
414        Speak a message through a TTS engine and return the url of the resulting audio.
415
416        :param message: The text to speak.
417        :param tts_engine: Optional uid of the engine to use, defaults to the configured one.
418        :param language: Optional language to speak the message in, omit to let the
419            engine speak in the language it is configured for.
420        """
421        if tts_engine:
422            engine = await resolve_tts_engine(self.mass, tts_engine)
423            if engine is None:
424                raise PlayerCommandFailed(f"TTS engine '{tts_engine}' is not available.")
425        else:
426            engine = await select_core_tts_engine(self.mass, self.domain, CONF_ANNOUNCE_TTS_ENGINE)
427            if engine is None:
428                raise PlayerCommandFailed("No text-to-speech engine is available.")
429        stream_details = await query_tts_engine_with_language_fallback(
430            engine,
431            message,
432            language,
433            timeout=ANNOUNCEMENT_TTS_TIMEOUT,
434            logger=self.logger,
435        )
436        path, _ = await resolve_tts_stream_path(engine, stream_details)
437        if not path.startswith("http"):
438            # a group announcement is forwarded to each member through this same command,
439            # whose url guard only accepts http - so a clip rendered to disk never gets past it
440            raise PlayerCommandFailed(
441                f"TTS engine '{engine.uid}' rendered the message to a local file. "
442                "Announcements need an engine that serves its audio over http."
443            )
444        return path
445
446    async def _play_native_announcement(
447        self,
448        player: Player,
449        announce_player: Player,
450        announcement: PlayerMedia,
451        volume_level: int | None,
452    ) -> None:
453        """
454        Hand an announcement to a player that plays it natively.
455
456        :param player: The player the announcement is played on.
457        :param announce_player: The player (or linked protocol) that plays the announcement.
458        :param announcement: The announcement to play.
459        :param volume_level: Optional volume level override for the announcement.
460        """
461        # an announcement is always meant to be heard, so a deliberate mute is lifted for
462        # its duration. this happens before the announcement volume is resolved below,
463        # since a fake mute control parks the player at volume 0 to mute it.
464        # in case of a (sync) group, this covers all child players.
465        muted_players = [
466            muted_player
467            for member_id in player.state.group_members or (player.player_id,)
468            if (muted_player := self.get_player(member_id)) and muted_player.state.volume_muted
469        ]
470        # filled while the announcement volume is applied below
471        prev_volumes: dict[str, int] = {}
472        try:
473            async with TaskManager(self.mass) as tg:
474                for muted_player in muted_players:
475                    tg.create_task(self._set_announcement_mute(muted_player, False))
476            announcement_volume = self.get_announcement_volume(player.player_id, volume_level)
477            if announcement_volume is not None and not self._output_owns_volume(
478                player, announce_player
479            ):
480                # The level is resolved on the scale of the control that owns the player's
481                # volume, so an output that does not own it cannot apply it: whatever that
482                # output sets is either discarded or stacks on top of the control that is
483                # already attenuating on the device. Apply it through the control instead
484                # and let the provider announce at the level the device now plays at.
485                await self._set_announcement_volume(player, announcement_volume, prev_volumes)
486                announcement_volume = None
487            await announce_player.play_announcement(announcement, announcement_volume)
488        finally:
489            # the provider only returns once the announcement finished playing
490            async with TaskManager(self.mass) as tg:
491                for volume_player_id, prev_volume in prev_volumes.items():
492                    tg.create_task(self._handle_cmd_volume_set(volume_player_id, prev_volume))
493            # restore mute after the volume, because setting a volume unmutes the player again
494            async with TaskManager(self.mass) as tg:
495                for muted_player in muted_players:
496                    tg.create_task(self._set_announcement_mute(muted_player, True))
497
498    async def _play_announcement(
499        self,
500        player: Player,
501        announcement: PlayerMedia,
502        volume_level: int | None = None,
503    ) -> None:
504        """
505        Handle (default/fallback) implementation of the play announcement feature.
506
507        This default implementation will;
508        - stop playback of the current media (if needed)
509        - power on the player (if needed)
510        - raise the volume a bit
511        - play the announcement (from given url)
512        - wait for the player to finish playing
513        - restore the previous power and volume
514        - restore playback (if needed and if possible)
515
516        This default implementation will only be used if the player
517        (provider) has no native support for the PLAY_ANNOUNCEMENT feature.
518        """
519        prev_state = player.state.playback_state
520        # A player without power control has no power state to restore, so it counts as
521        # powered here - otherwise the restore below would be skipped altogether for it,
522        # leaving the player ungrouped from its (sync)group.
523        prev_power = (
524            player.state.power_control == PLAYER_CONTROL_NONE
525            or bool(player.state.powered)
526            or prev_state != PlaybackState.IDLE
527        )
528        prev_synced_to = player.state.synced_to
529        prev_group = (
530            self.get_player(player.state.active_group) if player.state.active_group else None
531        )
532        prev_source = player.state.active_source
533        prev_media = player.state.current_media
534        prev_media_name = prev_media.title or prev_media.uri if prev_media else None
535        # An announcement is transient: a player that is still busy with an earlier
536        # announcement holds no user content, so there is nothing to restore for it.
537        # The raw media attribute is read here (instead of state.current_media, which
538        # reports the active queue item) since it tells what the device is playing.
539        restore_playback = prev_state == PlaybackState.PLAYING and not (
540            player.current_media is not None
541            and player.current_media.media_type == MediaType.ANNOUNCEMENT
542        )
543        # filled while the players are unmuted and the temporary volume is applied below
544        prev_volumes: dict[str, int] = {}
545        prev_muted: set[str] = set()
546        # everything from here on alters the player state, so the restore in the finally
547        # block must run even when the announcement itself fails halfway through
548        try:
549            await self._prepare_for_announcement(
550                player,
551                volume_level=volume_level,
552                prev_state=prev_state,
553                prev_synced_to=prev_synced_to,
554                prev_group=prev_group,
555                prev_media_name=prev_media_name,
556                prev_volumes=prev_volumes,
557                prev_muted=prev_muted,
558            )
559            # play the announcement
560            self.logger.debug(
561                "Announcement to player %s - playing the announcement on the player...",
562                player.state.name,
563            )
564            render = (
565                self.mass.streams.announcement_renderer.get(
566                    cast("AnnounceData", announcement.custom_data)
567                )
568                if announcement.custom_data
569                else None
570            )
571            if render is not None and not await render.wait_ready():
572                # the render has been filling while the player was prepared above; play on
573                # regardless when it came up empty, so the restore still runs
574                self.logger.warning(
575                    "Announcement to player %s - no audio available for %s",
576                    player.state.name,
577                    announcement.uri,
578                )
579            await self._handle_play_media(player.player_id, announcement)
580            # wait for the player(s) to play
581            await self._wait_for_playback_state(player, PlaybackState.PLAYING, 10, minimal_time=0.1)
582            playback_started = time.time()
583            # wait for the player to stop playing
584            duration = float(announcement.duration) if announcement.duration else None
585            if duration is None and render is not None:
586                # the render knows the exact length of the audio it produced
587                duration = await render.wait_finished()
588                if duration:
589                    announcement.duration = ceil(duration)
590            if duration is None:
591                # length unknown (e.g. the source stalled): wait for the player to report it
592                # finished, bounded by the longest clip an announcement can produce
593                await self._wait_for_playback_state(
594                    player, PlaybackState.IDLE, timeout=MAX_CLIP_SECONDS + 10
595                )
596            else:
597                # waiting for the length above already consumed part of the announcement
598                elapsed = time.time() - playback_started
599                await self._wait_for_playback_state(
600                    player,
601                    PlaybackState.IDLE,
602                    timeout=max(duration + 10 - elapsed, 1),
603                    minimal_time=max(duration + 2 - elapsed, 0),
604                )
605        finally:
606            await self._restore_after_announcement(
607                player,
608                prev_power=prev_power,
609                prev_volumes=prev_volumes,
610                prev_muted=prev_muted,
611                prev_synced_to=prev_synced_to,
612                prev_group=prev_group,
613                prev_source=prev_source,
614                prev_media=prev_media,
615                restore_playback=restore_playback,
616            )
617
618    async def _prepare_for_announcement(
619        self,
620        player: Player,
621        *,
622        volume_level: int | None,
623        prev_state: PlaybackState,
624        prev_synced_to: str | None,
625        prev_group: Player | None,
626        prev_media_name: str | None,
627        prev_volumes: dict[str, int],
628        prev_muted: set[str],
629    ) -> None:
630        """
631        Free up the player for an announcement and apply the temporary announcement volume.
632
633        :param player: The player the announcement will be played on.
634        :param volume_level: Optional volume level override for the announcement.
635        :param prev_state: The playback state the player had before the announcement.
636        :param prev_synced_to: Player ID of the sync leader the player is synced to (if any).
637        :param prev_group: The group player the player is a member of (if any).
638        :param prev_media_name: Name of the media the player was playing (for logging).
639        :param prev_volumes: Mapping that is filled in-place with the previous volume level
640            per player id, so the caller can restore the volumes even if this call fails.
641        :param prev_muted: Set that is filled in-place with the ids of the players that were
642            muted, so the caller can restore the mute state even if this call fails.
643        """
644        if prev_synced_to:
645            # ungroup player if its currently synced
646            self.logger.debug(
647                "Announcement to player %s - ungrouping player from %s...",
648                player.state.name,
649                prev_synced_to,
650            )
651            await self.cmd_ungroup(player.player_id)
652        elif prev_group:
653            # if the player is part of a group player, we need to ungroup it
654            if PlayerFeature.SET_MEMBERS in prev_group.supported_features:
655                self.logger.debug(
656                    "Announcement to player %s - ungrouping from group player %s...",
657                    player.state.name,
658                    prev_group.display_name,
659                )
660                await prev_group.set_members(player_ids_to_remove=[player.player_id])
661            else:
662                # if the player is part of a group player that does not support ungrouping,
663                # we need to power off the groupplayer instead
664                self.logger.debug(
665                    "Announcement to player %s - turning off group player %s...",
666                    player.state.name,
667                    prev_group.display_name,
668                )
669                await self._handle_cmd_power(prev_group.player_id, False)
670        elif prev_state in (PlaybackState.PLAYING, PlaybackState.PAUSED):
671            # normal/standalone player: stop player if its currently playing
672            self.logger.debug(
673                "Announcement to player %s - stop existing content (%s)...",
674                player.state.name,
675                prev_media_name,
676            )
677            await self._handle_cmd_stop(player.player_id)
678            # wait for the player to stop
679            await self._wait_for_playback_state(player, PlaybackState.IDLE, 10, 0.4)
680        # unmute and adjust volume if needed
681        # in case of a (sync) group, we need to do this for all child players
682        async with TaskManager(self.mass) as tg:
683            for volume_player_id in player.state.group_members or (player.player_id,):
684                if not (volume_player := self.get_player(volume_player_id)):
685                    continue
686                # catch any players that have a different source active
687                if (
688                    volume_player.state.active_source
689                    not in (
690                        player.state.active_source,
691                        volume_player.player_id,
692                        None,
693                    )
694                    and volume_player.state.playback_state == PlaybackState.PLAYING
695                ):
696                    self.logger.warning(
697                        "Detected announcement to playergroup %s while group member %s is playing "
698                        "other content, this may lead to unexpected behavior.",
699                        player.state.name,
700                        volume_player.state.name,
701                    )
702                    tg.create_task(self._handle_cmd_stop(volume_player.player_id))
703                tg.create_task(
704                    self._unmute_and_set_announcement_volume(
705                        volume_player, volume_level, prev_volumes, prev_muted
706                    )
707                )
708
709    async def _restore_after_announcement(
710        self,
711        player: Player,
712        *,
713        prev_power: bool,
714        prev_volumes: dict[str, int],
715        prev_muted: set[str],
716        prev_synced_to: str | None,
717        prev_group: Player | None,
718        prev_source: str | None,
719        prev_media: PlayerMedia | None,
720        restore_playback: bool,
721    ) -> None:
722        """
723        Restore the player state that was captured before an announcement was played.
724
725        This also runs when the announcement failed halfway through, so a failing restore
726        step is logged instead of raised: it may never mask the error that caused it.
727
728        :param player: The player the announcement was played on.
729        :param prev_power: Whether the player was powered before the announcement.
730        :param prev_volumes: The previous volume level per player id.
731        :param prev_muted: The ids of the players that were muted before the announcement.
732        :param prev_synced_to: Player ID of the sync leader the player was synced to (if any).
733        :param prev_group: The group player the player was a member of (if any).
734        :param prev_source: The source that was active before the announcement.
735        :param prev_media: The media that was loaded before the announcement.
736        :param restore_playback: Whether playback needs to be resumed.
737        """
738        self.logger.debug(
739            "Announcement to player %s - restore previous state...", player.state.name
740        )
741        # restore volume
742        async with TaskManager(self.mass) as tg:
743            for volume_player_id, prev_volume in prev_volumes.items():
744                tg.create_task(self._handle_cmd_volume_set(volume_player_id, prev_volume))
745        # restore mute after the volume, because setting a volume unmutes the player again
746        async with TaskManager(self.mass) as tg:
747            for muted_player_id in prev_muted:
748                if not (muted_player := self.get_player(muted_player_id)):
749                    continue
750                tg.create_task(self._set_announcement_mute(muted_player, True))
751        await asyncio.sleep(0.2)
752        try:
753            # either power off the player or resume playing
754            if not prev_power:
755                # prev_power is always True for a player without power control,
756                # so there is an actual power control to switch off here
757                self.logger.debug(
758                    "Announcement to player %s - turning player off again...", player.state.name
759                )
760                await self._handle_cmd_power(player.player_id, False)
761                return
762            if prev_synced_to:
763                self.logger.debug(
764                    "Announcement to player %s - syncing back to %s...",
765                    player.state.name,
766                    prev_synced_to,
767                )
768                await self.cmd_set_members(prev_synced_to, player_ids_to_add=[player.player_id])
769            elif prev_group:
770                if PlayerFeature.SET_MEMBERS in prev_group.supported_features:
771                    self.logger.debug(
772                        "Announcement to player %s - grouping back to group player %s...",
773                        player.state.name,
774                        prev_group.display_name,
775                    )
776                    await prev_group.set_members(player_ids_to_add=[player.player_id])
777                elif restore_playback:
778                    # if the player is part of a group player that does not support set_members,
779                    # we need to restart the groupplayer
780                    self.logger.debug(
781                        "Announcement to player %s - restarting playback on group player %s...",
782                        player.state.name,
783                        prev_group.display_name,
784                    )
785                    await self.cmd_play(prev_group.player_id)
786            elif restore_playback:
787                # player was playing something before the announcement - try to resume that here
788                await self._handle_cmd_resume(player.player_id, prev_source, prev_media)
789        except Exception as err:
790            # deliberately broad: set_members is a raw provider call that is not wrapped
791            # into a MusicAssistantError, so it can surface anything its client library
792            # raises. CancelledError is a BaseException and still propagates.
793            self.logger.warning(
794                "Announcement to player %s - restoring the previous state failed: %s",
795                player.state.name,
796                err,
797            )
798
799    async def _unmute_and_set_announcement_volume(
800        self,
801        volume_player: Player,
802        volume_level: int | None,
803        prev_volumes: dict[str, int],
804        prev_muted: set[str],
805    ) -> None:
806        """
807        Make a single player ready to be heard: unmute it and set the announcement volume.
808
809        :param volume_player: The player to prepare.
810        :param volume_level: Optional volume level override for the announcement.
811        :param prev_volumes: Mapping that is filled in-place with the previous volume level
812            per player id.
813        :param prev_muted: Set that is filled in-place with the ids of the players that
814            were muted.
815        """
816        if volume_player.state.volume_muted:
817            # an announcement is always meant to be heard, so a deliberate mute is lifted
818            # for its duration. this happens before the volume is read below, since a
819            # fake mute control parks the player at volume 0 to mute it.
820            prev_muted.add(volume_player.player_id)
821            await self._set_announcement_mute(volume_player, False)
822        if volume_player.state.volume_control == PLAYER_CONTROL_NONE:
823            return
824        if (prev_volume := volume_player.state.volume_level) is None:
825            return
826        announcement_volume = self.get_announcement_volume(volume_player.player_id, volume_level)
827        # get_announcement_volume already returns None when the volume must be left
828        # alone, so any number it does return is the volume to announce at - including
829        # 0, which must not be mistaken for 'no volume configured'
830        if announcement_volume is None or announcement_volume == prev_volume:
831            return
832        prev_volumes[volume_player.player_id] = prev_volume
833        self.logger.debug(
834            "Announcement to player %s - setting temporary volume (%s)...",
835            volume_player.state.name,
836            announcement_volume,
837        )
838        await self._handle_cmd_volume_set(volume_player.player_id, announcement_volume)
839
840    def _output_owns_volume(self, player: Player, announce_player: Player) -> bool:
841        """
842        Return True if the announcing output can apply the announcement volume itself.
843
844        :param player: The player the announcement is played on.
845        :param announce_player: The player (or linked protocol) that plays the announcement.
846        """
847        volume_control = player.volume_control_for_output(announce_player.player_id)
848        if volume_control == PLAYER_CONTROL_NATIVE:
849            # A native volume lives on the player itself, so only its own output can
850            # apply it: a linked protocol rendering the audio has no way to reach it.
851            return announce_player.player_id == player.player_id
852        if volume_control == announce_player.player_id:
853            # the volume lives on the device the announcing output talks to
854            return True
855        # a bridge player riding on the announcing output forwards its volume to it
856        if control_player := self.get_player(volume_control):
857            return control_player.underlying_player_id == announce_player.player_id
858        return False
859
860    async def _set_announcement_volume(
861        self, player: Player, announcement_volume: int, prev_volumes: dict[str, int]
862    ) -> None:
863        """
864        Apply the announcement volume through the player's own volume control.
865
866        :param player: The player to set the announcement volume on.
867        :param announcement_volume: The resolved announcement volume level.
868        :param prev_volumes: Mapping that is filled in-place with the previous volume level
869            per player id, so the caller can restore the volume even if this call fails.
870        """
871        if player.state.volume_control == PLAYER_CONTROL_NONE:
872            # nothing in the signal path can set a volume at all
873            return
874        if (prev_volume := player.state.volume_level) is None or prev_volume == announcement_volume:
875            return
876        prev_volumes[player.player_id] = prev_volume
877        self.logger.debug(
878            "Announcement to player %s - setting temporary volume (%s)...",
879            player.state.name,
880            announcement_volume,
881        )
882        await self._handle_cmd_volume_set(player.player_id, announcement_volume)
883
884    async def _set_announcement_mute(self, player: Player, muted: bool) -> None:
885        """
886        Mute or unmute a player for the duration of an announcement.
887
888        :param player: The player to mute or unmute.
889        :param muted: bool if the player should be muted.
890        """
891        # the internal handler is used instead of cmd_volume_mute so the player keeps the
892        # mute lock it earned as a group member: the public command clears that lock on
893        # unmute and the player may well be ungrouped by the time it is muted back.
894        mute_control = player.mute_control
895        if mute_control == PLAYER_CONTROL_NONE:
896            return
897        await self._handle_cmd_volume_mute(player, mute_control, muted)
898