349 lines
14 KiB
Python
349 lines
14 KiB
Python
"""Orchestrates the pet's mic -> wake word -> STT -> server -> TTS pipeline.
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Runs on a background QThread (see ui/app.py) so the Qt event loop / window
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painting is never blocked by audio I/O or network calls. Talks to the UI
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only through Qt signals (state_changed / said / log / action / napping),
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which Qt marshals safely across threads — this class never touches a QWidget
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directly.
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Beyond the core loop it owns the side channels that let the pet act on its
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own: the heartbeat (proactive announcements), the desktop notification
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bridge, quiet hours, barge-in, and the live wake-word threshold.
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"""
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from __future__ import annotations
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import threading
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import time
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from typing import Optional
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from PySide6.QtCore import QObject, Signal
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from . import config, history as history_mod, notifications, pet_actions, quiet, screen_context, server_client, speech_text
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from .audio import barge_in, mic, stt, tts, wake_word
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from .state import PetState, PetStateMachine
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# How often to re-check whether the pet should be napping. The fullscreen
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# probe shells out to xprop, so this deliberately isn't every heartbeat tick.
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_NAP_CHECK_INTERVAL_SECONDS = 10.0
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class PetController(QObject):
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state_changed = Signal(str) # PetState.value
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said = Signal(str) # text now showing in the speech bubble
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log = Signal(str)
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action = Signal(dict) # parsed petctl action for the UI to perform
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napping = Signal(bool) # quiet hours / fullscreen do-not-disturb
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finished = Signal()
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def __init__(self):
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super().__init__()
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self._running = True
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self._muted = False
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self._talk_now = threading.Event()
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self._stream = None
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self._last_heartbeat = 0.0
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self._state = PetStateMachine(on_change=self._handle_state_change)
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# Conversation scrollback, shared read-only with the UI's History
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# window. Append-only from this thread; the UI only ever snapshots it.
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self.history = history_mod.ConversationHistory(limit=config.HISTORY_LIMIT)
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# Wake-word sensitivity is live-tunable (tray tuner), so it's read
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# through a callable on every frame rather than captured per listen.
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self._wake_threshold = config.WAKE_WORD_THRESHOLD
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self._near_misses = wake_word.NearMissLog()
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self._barge_in: Optional[barge_in.BargeInDetector] = None
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self._napping = False
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self._nap_forced: Optional[bool] = None # petctl nap on/off overrides the schedule
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self._last_nap_check = 0.0
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self._notification_watcher: Optional[notifications.NotificationWatcher] = None
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self._notification_gate = notifications.NotificationGate(
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config.NOTIFICATION_FILTER, config.NOTIFICATION_MIN_INTERVAL_SECONDS
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)
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self._pending_notifications: list[notifications.Notification] = []
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self._notification_lock = threading.Lock()
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# ── external controls (safe to call from the Qt/UI thread) ─────────
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def request_talk_now(self) -> None:
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self._talk_now.set()
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def toggle_mute(self) -> bool:
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self._muted = not self._muted
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self.log.emit("Muted." if self._muted else "Unmuted.")
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return self._muted
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def set_napping(self, napping: Optional[bool]) -> None:
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"""Force the nap state on/off, or pass None to hand control back to
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the quiet-hours schedule."""
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self._nap_forced = napping
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if napping is not None:
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self._apply_nap_state(napping)
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def wake_threshold(self) -> float:
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return self._wake_threshold
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def set_wake_threshold(self, value: float) -> None:
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self._wake_threshold = min(max(float(value), 0.01), 0.99)
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def wake_stats(self) -> dict:
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return {"peak": self._near_misses.peak, "near_misses": self._near_misses.entries()}
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def reset_wake_stats(self) -> None:
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self._near_misses.clear()
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def stop(self) -> None:
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self._running = False
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self._talk_now.set() # wake up anything blocked waiting on it
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if self._notification_watcher is not None:
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self._notification_watcher.stop()
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# ── internal ─────────────────────────────────────────────────────────
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def _handle_state_change(self, _old: PetState, new: PetState) -> None:
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self.state_changed.emit(new.value)
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def _should_continue(self) -> bool:
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return self._running
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def run(self) -> None:
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"""Thread entry point (connected to QThread.started)."""
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missing = config.missing_config()
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if missing:
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self.log.emit(f"Missing config: {', '.join(missing)} — set them in .env and restart.")
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self.finished.emit()
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return
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try:
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self._stream = mic.open_input_stream()
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except Exception as exc:
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self.log.emit(f"Could not open microphone: {exc}")
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self.finished.emit()
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return
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if config.BARGE_IN:
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self._barge_in = barge_in.BargeInDetector(self._stream)
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with self._stream:
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try:
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health = server_client.check_health()
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self.log.emit(f"Connected to server: {health}")
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except Exception as exc:
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self.log.emit(f"Server not reachable yet ({exc}) — will keep trying per-request.")
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self._start_notification_bridge()
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self._loop()
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if self._notification_watcher is not None:
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self._notification_watcher.stop()
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self.finished.emit()
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def _loop(self) -> None:
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while self._running:
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if self._muted:
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triggered = self._talk_now.wait(timeout=0.5)
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if not self._running:
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return
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if not triggered:
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continue
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self._talk_now.clear()
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else:
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if not self._wait_for_wake_or_click():
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if not self._running:
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return
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continue
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self._handle_conversation_turn()
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def _wait_for_wake_or_click(self) -> bool:
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"""True once either the wake phrase was heard or a click-to-talk
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request came in; False on a spurious wakeup (loop again)."""
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def should_continue() -> bool:
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return self._running and not self._talk_now.is_set()
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detected = wake_word.listen_for_wake_word(
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self._stream,
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should_continue=should_continue,
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threshold=self.wake_threshold, # callable: the tuner slider is live
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on_tick=self._maybe_heartbeat,
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on_score=self._observe_wake_score,
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)
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if not self._running:
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return False
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if detected:
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self._talk_now.clear() # in case both fired around the same time
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return True
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if self._talk_now.is_set():
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self._talk_now.clear()
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return True
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return False
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def _observe_wake_score(self, score: float, threshold: float) -> None:
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self._near_misses.observe(score, threshold, time.time())
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def _handle_conversation_turn(self) -> None:
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self._state.transition(PetState.LISTENING)
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pcm = mic.record_utterance(self._stream, should_continue=self._should_continue)
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if pcm is None:
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self._state.transition(PetState.IDLE)
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return
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self._state.transition(PetState.THINKING)
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try:
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text = stt.transcribe(pcm)
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except stt.SttError as exc:
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self.log.emit(f"STT failed: {exc}")
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self._state.transition(PetState.ERROR)
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self._state.transition(PetState.IDLE)
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return
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if not text:
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self._state.transition(PetState.IDLE)
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return
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self.log.emit(f"You: {text}")
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self.history.add(history_mod.USER, text, time.time())
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try:
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# What's focused right now rides along, so "what's this error?"
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# has a referent without you having to describe the window.
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reply = server_client.converse(
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screen_context.context_for(text), on_command=self._handle_command
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)
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except server_client.ServerError as exc:
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self.log.emit(f"Server error: {exc}")
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self._state.transition(PetState.ERROR)
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self._state.transition(PetState.IDLE)
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return
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self._speak(reply)
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self._state.transition(PetState.IDLE)
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def _handle_command(self, command: str) -> str:
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"""Server-relayed command. `petctl ...` drives the pet's body and
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never reaches a shell; everything else is a real command, exactly as
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before (see the security notes in the README)."""
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try:
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action = pet_actions.parse(command)
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except pet_actions.ActionError as exc:
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self.log.emit(f"petctl: {exc}")
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return f"[pet] {exc}"
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if action is None:
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return server_client.run_local_command(command)
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self.log.emit(f"Pet action: {action}")
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if action["action"] == "nap":
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self.set_napping(bool(action["enabled"]))
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self.action.emit(action)
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return pet_actions.describe(action)
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def _speak(self, text: str) -> None:
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self._state.transition(PetState.TALKING)
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# Bubble gets the markdown stripped but emoji kept (it can't render
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# **bold** but draws emoji fine); tts.speak() does its own, stricter
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# sanitizing for the voice.
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self.said.emit(speech_text.for_display(text))
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self.log.emit(f"Bolt: {text}")
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self.history.add(history_mod.PET, text, time.time())
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should_stop = None
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if self._barge_in is not None:
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self._barge_in.reset()
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should_stop = self._barge_in.check
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completed = tts.speak(
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text,
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on_error=lambda exc: self.log.emit(f"TTS failed: {exc}"),
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should_stop=should_stop,
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)
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if not completed:
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# You talked over it — take that as the start of the next turn
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# rather than making you say the wake word again.
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self.log.emit("Interrupted — listening.")
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self._talk_now.set()
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# ── quiet hours / do-not-disturb ─────────────────────────────────────
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def _apply_nap_state(self, napping: bool) -> None:
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if napping == self._napping:
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return
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self._napping = napping
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self.log.emit("Napping — no proactive noise." if napping else "Awake.")
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self.napping.emit(napping)
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def _refresh_nap_state(self) -> None:
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if self._nap_forced is not None:
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self._apply_nap_state(self._nap_forced)
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return
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now = time.monotonic()
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if now - self._last_nap_check < _NAP_CHECK_INTERVAL_SECONDS:
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return
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self._last_nap_check = now
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napping = quiet.is_quiet(
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config.QUIET_HOURS,
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on_error=lambda exc: self.log.emit(f"QUIET_HOURS is malformed ({exc}) — ignoring it."),
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)
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if not napping and config.DND_ON_FULLSCREEN:
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napping = screen_context.is_fullscreen_active()
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self._apply_nap_state(napping)
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# ── desktop notification bridge ──────────────────────────────────────
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def _start_notification_bridge(self) -> None:
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if not config.NOTIFICATION_BRIDGE:
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return
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watcher = notifications.NotificationWatcher(self._queue_notification)
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problem = watcher.start()
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if problem:
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self.log.emit(problem)
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return
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self._notification_watcher = watcher
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self.log.emit("Notification bridge on.")
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def _queue_notification(self, notification: notifications.Notification) -> None:
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"""Called on the watcher thread — just queue it; forwarding happens on
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the pipeline thread where it can't collide with a live conversation."""
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if not self._notification_gate.should_forward(notification, time.monotonic()):
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return
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with self._notification_lock:
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self._pending_notifications.append(notification)
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def _drain_notifications(self) -> None:
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with self._notification_lock:
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pending, self._pending_notifications = self._pending_notifications, []
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for notification in pending:
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if not self._running or self._napping:
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return
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self.log.emit(f"Notification: {notification.as_text()}")
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self.history.add(history_mod.SYSTEM, notification.as_text(), time.time())
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try:
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reply = server_client.converse(
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f"[desktop notification] {notification.as_text()}",
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on_command=self._handle_command,
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)
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except server_client.ServerError as exc:
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self.log.emit(f"Couldn't forward notification: {exc}")
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return
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if reply.strip():
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self._speak(reply)
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self._state.transition(PetState.IDLE)
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# ── heartbeat ────────────────────────────────────────────────────────
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def _maybe_heartbeat(self) -> None:
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self._refresh_nap_state()
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now = time.monotonic()
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if now - self._last_heartbeat < config.HEARTBEAT_INTERVAL_SECONDS:
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return
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self._last_heartbeat = now
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if self._state.state != PetState.IDLE:
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return
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if self._napping:
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return # quiet hours: still answers when spoken to, just doesn't start
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self._drain_notifications()
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if self._state.state != PetState.IDLE:
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return
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try:
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announcement = server_client.report_status()
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except server_client.ServerError as exc:
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self.log.emit(f"Heartbeat failed: {exc}")
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return
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if announcement:
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self._speak(announcement)
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self._state.transition(PetState.IDLE)
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