322 lines
10 KiB
Python
322 lines
10 KiB
Python
# linux_voice_assistant/mpv_player.py
|
|
"""
|
|
Media player using mpv in a subprocess.
|
|
|
|
Merged version:
|
|
- Keeps LVA's backend auto-selection (PipeWire, PulseAudio, ALSA)
|
|
- Keeps watchdog, env-based config, robust URL handling, and logging
|
|
- Adds OHF-style playlist chaining (_playlist)
|
|
"""
|
|
|
|
from __future__ import annotations
|
|
|
|
import logging
|
|
import os
|
|
from threading import Lock, Timer
|
|
from typing import Callable, Iterable, Optional, Sequence, Tuple, Union, List
|
|
|
|
from mpv import MPV
|
|
|
|
_LOGGER = logging.getLogger(__name__)
|
|
|
|
# ---- constants & helpers -----------------------------------------------------
|
|
|
|
_DEFAULT_MSG_LEVEL = "all=warn"
|
|
|
|
_AO_ENV_ALIASES = {
|
|
"native": "pipewire",
|
|
"pw": "pipewire",
|
|
"pulseaudio": "pulse",
|
|
}
|
|
_AO_ALLOWED = {"pipewire", "pulse", "alsa"}
|
|
|
|
|
|
def _normalize_env_ao(value: Optional[str]) -> Optional[str]:
|
|
if not value:
|
|
return None
|
|
v = value.strip().lower()
|
|
v = _AO_ENV_ALIASES.get(v, v)
|
|
return v if v in _AO_ALLOWED else None
|
|
|
|
|
|
def _set_player_opt(player: MPV, key: str, value) -> None:
|
|
try:
|
|
player[key] = value
|
|
except Exception:
|
|
_LOGGER.exception("Failed to set mpv option %r=%r", key, value, exc_info=True)
|
|
|
|
|
|
def _select_backend(player: MPV, device: Optional[str], env_ao: Optional[str]) -> Tuple[Optional[str], Optional[str]]:
|
|
ao: Optional[str] = None
|
|
norm: Optional[str] = None
|
|
|
|
def try_candidates(candidates: Iterable[Tuple[str, str]]) -> bool:
|
|
nonlocal ao, norm
|
|
for cand_ao, cand_norm in candidates:
|
|
try:
|
|
player["ao"] = cand_ao
|
|
ao, norm = cand_ao, cand_norm
|
|
return True
|
|
except Exception:
|
|
continue
|
|
return False
|
|
|
|
if device:
|
|
d = device.strip()
|
|
if d.startswith("alsa/"):
|
|
ao, norm = "alsa", d
|
|
elif d.startswith("pulse/"):
|
|
ao, norm = "pulse", d
|
|
elif d.startswith(("pipewire/", "pw/")):
|
|
ao, norm = "pipewire", d.replace("pw/", "pipewire/", 1)
|
|
elif d == "default":
|
|
order: list[Tuple[str, str]] = []
|
|
if env_ao:
|
|
order.append((env_ao, f"{env_ao}/default"))
|
|
order += [
|
|
("pipewire", "pipewire/default"),
|
|
("pulse", "pulse/default"),
|
|
("alsa", "alsa/default"),
|
|
]
|
|
if not try_candidates(order):
|
|
_LOGGER.warning("No suitable audio output available for 'default'")
|
|
else:
|
|
tried = False
|
|
if env_ao:
|
|
tried = try_candidates([(env_ao, f"{env_ao}/{d if env_ao != 'alsa' else 'default'}")])
|
|
if not tried:
|
|
try_candidates([("pipewire", f"pipewire/{d}"), ("pulse", f"pulse/{d}"), ("alsa", "alsa/default")])
|
|
else:
|
|
order: list[Tuple[str, str]] = []
|
|
if env_ao:
|
|
order.append((env_ao, f"{env_ao}/default"))
|
|
order += [("pipewire", "pipewire/default"), ("pulse", "pulse/default"), ("alsa", "alsa/default")]
|
|
try_candidates(order)
|
|
|
|
if ao:
|
|
_set_player_opt(player, "ao", ao)
|
|
if norm:
|
|
_set_player_opt(player, "audio-device", norm)
|
|
if ao or norm:
|
|
_LOGGER.debug("mpv backend selected: ao=%s, audio-device=%s", ao, norm)
|
|
return ao, norm
|
|
|
|
|
|
class MpvMediaPlayer:
|
|
def __init__(self, device: Optional[str] = None, watchdog_sec: float = 0.0) -> None:
|
|
self.player = MPV(video=False, terminal=False, log_handler=self._mpv_log)
|
|
|
|
_set_player_opt(self.player, "audio-samplerate", 44100)
|
|
_set_player_opt(self.player, "audio-channels", "stereo")
|
|
_set_player_opt(self.player, "keep-open", "no")
|
|
_set_player_opt(self.player, "network-timeout", 7)
|
|
msg_level = os.environ.get("LVA_MPV_MSG_LEVEL", _DEFAULT_MSG_LEVEL)
|
|
_set_player_opt(self.player, "msg-level", msg_level)
|
|
|
|
env_ao = _normalize_env_ao(os.environ.get("LVA_AO"))
|
|
self._ao, self._audio_device = _select_backend(self.player, device, env_ao)
|
|
|
|
self.is_playing: bool = False
|
|
self._done_callback: Optional[Callable[[], None]] = None
|
|
self._done_callback_lock = Lock()
|
|
self._pre_duck_volume: Optional[int] = None
|
|
self._watchdog: Optional[Timer] = None
|
|
self._watchdog_sec: float = float(watchdog_sec)
|
|
|
|
self._playlist: List[str] = []
|
|
|
|
self.player.observe_property("eof-reached", self._on_eof)
|
|
self.player.observe_property("idle-active", self._on_idle_active)
|
|
|
|
# -------------------- public API --------------------
|
|
|
|
def play(
|
|
self,
|
|
url: Union[str, Sequence[str], bytes],
|
|
done_callback: Optional[Callable[[], None]] = None,
|
|
stop_first: bool = False,
|
|
) -> None:
|
|
if stop_first:
|
|
try:
|
|
self.stop()
|
|
except Exception:
|
|
_LOGGER.debug("stop_first=True: stop() raised", exc_info=True)
|
|
|
|
with self._done_callback_lock:
|
|
self._done_callback = done_callback
|
|
|
|
if isinstance(url, (list, tuple)):
|
|
self._playlist = list(url)
|
|
elif isinstance(url, bytes):
|
|
try:
|
|
self._playlist = [url.decode("utf-8")]
|
|
except Exception:
|
|
self._playlist = [url.decode(errors="ignore")]
|
|
elif isinstance(url, str):
|
|
self._playlist = [url]
|
|
else:
|
|
_LOGGER.error("mpv play() expected str/seq/bytes, got %r", type(url))
|
|
self._run_done_callback()
|
|
return
|
|
|
|
if not self._playlist:
|
|
_LOGGER.error("Empty playlist; nothing to play")
|
|
self._run_done_callback()
|
|
return
|
|
|
|
next_url = self._playlist.pop(0)
|
|
self._play_single(next_url)
|
|
|
|
def _play_single(self, url: str) -> None:
|
|
_LOGGER.debug("Playing %s", url)
|
|
try:
|
|
self.player["mute"] = "no"
|
|
except Exception:
|
|
_LOGGER.debug("Failed to unmute before playback", exc_info=True)
|
|
|
|
self.is_playing = True
|
|
try:
|
|
self.player.play(url)
|
|
self._arm_watchdog()
|
|
except Exception:
|
|
self.is_playing = False
|
|
_LOGGER.exception("mpv failed to play %r", url, exc_info=True)
|
|
self._run_done_callback()
|
|
|
|
def pause(self) -> None:
|
|
try:
|
|
self.player.pause = True
|
|
except Exception:
|
|
_LOGGER.exception("mpv pause() failed", exc_info=True)
|
|
|
|
def resume(self) -> None:
|
|
try:
|
|
self.player.pause = False
|
|
except Exception:
|
|
_LOGGER.exception("mpv resume() failed", exc_info=True)
|
|
|
|
def stop(self) -> None:
|
|
try:
|
|
try:
|
|
self.player.command("stop")
|
|
except Exception:
|
|
self.player.command("loadfile", "null://", "replace")
|
|
finally:
|
|
self._cancel_watchdog()
|
|
self._playlist.clear()
|
|
was_playing = self.is_playing
|
|
self.is_playing = False
|
|
if was_playing:
|
|
self._run_done_callback()
|
|
|
|
def set_volume(self, *args, **kwargs) -> None:
|
|
vol_arg = args[0] if args else kwargs.get("volume")
|
|
if vol_arg is None:
|
|
_LOGGER.error("set_volume() requires an integer (0..100)")
|
|
return
|
|
|
|
try:
|
|
vol = max(0, min(100, int(vol_arg)))
|
|
self.player.volume = vol
|
|
except Exception:
|
|
_LOGGER.exception("set_volume() failed", exc_info=True)
|
|
|
|
def duck(self, target_percent: int = 20) -> None:
|
|
if self._pre_duck_volume is not None:
|
|
return
|
|
try:
|
|
current = int(round(float(self.player.volume)))
|
|
except Exception:
|
|
current = 100
|
|
self._pre_duck_volume = current
|
|
try:
|
|
self.player.volume = max(0, min(100, int(target_percent)))
|
|
except Exception:
|
|
_LOGGER.exception("duck() failed", exc_info=True)
|
|
|
|
def unduck(self) -> None:
|
|
if self._pre_duck_volume is None:
|
|
return
|
|
try:
|
|
self.player.volume = self._pre_duck_volume
|
|
except Exception:
|
|
_LOGGER.exception("unduck() failed", exc_info=True)
|
|
finally:
|
|
self._pre_duck_volume = None
|
|
|
|
# -------------------- callbacks & watchdog --------------------
|
|
|
|
def _on_eof(self, _name: str, reached: bool) -> None:
|
|
if not reached:
|
|
return
|
|
self._cancel_watchdog()
|
|
self.is_playing = False
|
|
|
|
if self._playlist:
|
|
next_url = self._playlist.pop(0)
|
|
self._play_single(next_url)
|
|
return
|
|
|
|
self._run_done_callback()
|
|
|
|
def _on_idle_active(self, _name: str, active: bool) -> None:
|
|
if not self.is_playing:
|
|
return
|
|
if bool(active):
|
|
_LOGGER.debug("mpv became idle; treating as end-of-playback")
|
|
self._cancel_watchdog()
|
|
self.is_playing = False
|
|
if self._playlist:
|
|
next_url = self._playlist.pop(0)
|
|
self._play_single(next_url)
|
|
return
|
|
self._run_done_callback()
|
|
|
|
def _arm_watchdog(self) -> None:
|
|
self._cancel_watchdog()
|
|
if self._watchdog_sec <= 0:
|
|
return
|
|
self._watchdog = Timer(self._watchdog_sec, self._watchdog_trip)
|
|
self._watchdog.daemon = True
|
|
self._watchdog.start()
|
|
|
|
def _cancel_watchdog(self) -> None:
|
|
if self._watchdog is not None:
|
|
try:
|
|
self._watchdog.cancel()
|
|
except Exception:
|
|
_LOGGER.debug("watchdog cancel raised", exc_info=True)
|
|
self._watchdog = None
|
|
|
|
def _watchdog_trip(self) -> None:
|
|
if self.is_playing:
|
|
_LOGGER.warning("mpv watchdog fired; stopping playback")
|
|
try:
|
|
self.player.command("stop")
|
|
except Exception:
|
|
_LOGGER.debug("watchdog stop raised", exc_info=True)
|
|
self.is_playing = False
|
|
self._run_done_callback()
|
|
|
|
def _run_done_callback(self) -> None:
|
|
cb: Optional[Callable[[], None]] = None
|
|
with self._done_callback_lock:
|
|
cb = self._done_callback
|
|
self._done_callback = None
|
|
if cb is not None:
|
|
try:
|
|
cb()
|
|
except Exception:
|
|
_LOGGER.exception("Unexpected error running done callback", exc_info=True)
|
|
|
|
def _mpv_log(self, level: str, prefix: str, text: str) -> None:
|
|
msg = f"mpv[{level}] {prefix}: {text}".rstrip()
|
|
if level in ("fatal", "error"):
|
|
_LOGGER.error(msg)
|
|
elif level in ("warn", "warning"):
|
|
_LOGGER.warning(msg)
|
|
elif level in ("info",):
|
|
_LOGGER.info(msg)
|
|
else:
|
|
_LOGGER.debug(msg)
|