mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-11-21 19:07:46 +01:00
244 lines
10 KiB
Python
244 lines
10 KiB
Python
"""Handle communication between Frigate and other applications."""
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import logging
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from typing import Any, Callable
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from abc import ABC, abstractmethod
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from frigate.config import FrigateConfig
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from frigate.ptz import OnvifController, OnvifCommandEnum
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from frigate.types import CameraMetricsTypes, RecordMetricsTypes
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from frigate.util import restart_frigate
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logger = logging.getLogger(__name__)
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class Communicator(ABC):
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"""pub/sub model via specific protocol."""
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@abstractmethod
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def publish(self, topic: str, payload: Any, retain: bool = False) -> None:
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"""Send data via specific protocol."""
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pass
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@abstractmethod
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def subscribe(self, receiver: Callable) -> None:
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"""Pass receiver so communicators can pass commands."""
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pass
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@abstractmethod
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def stop(self) -> None:
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"""Stop the communicator."""
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pass
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class Dispatcher:
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"""Handle communication between Frigate and communicators."""
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def __init__(
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self,
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config: FrigateConfig,
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onvif: OnvifController,
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camera_metrics: dict[str, CameraMetricsTypes],
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record_metrics: dict[str, RecordMetricsTypes],
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communicators: list[Communicator],
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) -> None:
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self.config = config
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self.onvif = onvif
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self.camera_metrics = camera_metrics
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self.record_metrics = record_metrics
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self.comms = communicators
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for comm in self.comms:
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comm.subscribe(self._receive)
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self._camera_settings_handlers: dict[str, Callable] = {
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"detect": self._on_detect_command,
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"improve_contrast": self._on_motion_improve_contrast_command,
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"motion": self._on_motion_command,
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"motion_contour_area": self._on_motion_contour_area_command,
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"motion_threshold": self._on_motion_threshold_command,
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"recordings": self._on_recordings_command,
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"snapshots": self._on_snapshots_command,
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}
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def _receive(self, topic: str, payload: str) -> None:
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"""Handle receiving of payload from communicators."""
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if topic.endswith("set"):
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try:
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# example /cam_name/detect/set payload=ON|OFF
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camera_name = topic.split("/")[-3]
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command = topic.split("/")[-2]
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self._camera_settings_handlers[command](camera_name, payload)
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except IndexError as e:
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logger.error(f"Received invalid set command: {topic}")
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return
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elif topic.endswith("ptz"):
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try:
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# example /cam_name/ptz payload=MOVE_UP|MOVE_DOWN|STOP...
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camera_name = topic.split("/")[-2]
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self._on_ptz_command(camera_name, payload)
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except IndexError as e:
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logger.error(f"Received invalid ptz command: {topic}")
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return
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elif topic == "restart":
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restart_frigate()
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def publish(self, topic: str, payload: Any, retain: bool = False) -> None:
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"""Handle publishing to communicators."""
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for comm in self.comms:
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comm.publish(topic, payload, retain)
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def stop(self) -> None:
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for comm in self.comms:
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comm.stop()
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def _on_detect_command(self, camera_name: str, payload: str) -> None:
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"""Callback for detect topic."""
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detect_settings = self.config.cameras[camera_name].detect
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if payload == "ON":
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if not self.camera_metrics[camera_name]["detection_enabled"].value:
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logger.info(f"Turning on detection for {camera_name}")
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self.camera_metrics[camera_name]["detection_enabled"].value = True
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detect_settings.enabled = True
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if not self.camera_metrics[camera_name]["motion_enabled"].value:
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logger.info(
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f"Turning on motion for {camera_name} due to detection being enabled."
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)
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self.camera_metrics[camera_name]["motion_enabled"].value = True
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self.publish(f"{camera_name}/motion/state", payload, retain=True)
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elif payload == "OFF":
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if self.camera_metrics[camera_name]["detection_enabled"].value:
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logger.info(f"Turning off detection for {camera_name}")
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self.camera_metrics[camera_name]["detection_enabled"].value = False
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detect_settings.enabled = False
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self.publish(f"{camera_name}/detect/state", payload, retain=True)
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def _on_motion_command(self, camera_name: str, payload: str) -> None:
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"""Callback for motion topic."""
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if payload == "ON":
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if not self.camera_metrics[camera_name]["motion_enabled"].value:
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logger.info(f"Turning on motion for {camera_name}")
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self.camera_metrics[camera_name]["motion_enabled"].value = True
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elif payload == "OFF":
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if self.camera_metrics[camera_name]["detection_enabled"].value:
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logger.error(
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f"Turning off motion is not allowed when detection is enabled."
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)
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return
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if self.camera_metrics[camera_name]["motion_enabled"].value:
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logger.info(f"Turning off motion for {camera_name}")
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self.camera_metrics[camera_name]["motion_enabled"].value = False
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self.publish(f"{camera_name}/motion/state", payload, retain=True)
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def _on_motion_improve_contrast_command(
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self, camera_name: str, payload: str
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) -> None:
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"""Callback for improve_contrast topic."""
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motion_settings = self.config.cameras[camera_name].motion
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if payload == "ON":
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if not self.camera_metrics[camera_name]["improve_contrast_enabled"].value:
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logger.info(f"Turning on improve contrast for {camera_name}")
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self.camera_metrics[camera_name][
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"improve_contrast_enabled"
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].value = True
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motion_settings.improve_contrast = True # type: ignore[union-attr]
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elif payload == "OFF":
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if self.camera_metrics[camera_name]["improve_contrast_enabled"].value:
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logger.info(f"Turning off improve contrast for {camera_name}")
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self.camera_metrics[camera_name][
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"improve_contrast_enabled"
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].value = False
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motion_settings.improve_contrast = False # type: ignore[union-attr]
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self.publish(f"{camera_name}/improve_contrast/state", payload, retain=True)
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def _on_motion_contour_area_command(self, camera_name: str, payload: int) -> None:
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"""Callback for motion contour topic."""
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try:
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payload = int(payload)
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except ValueError:
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f"Received unsupported value for motion contour area: {payload}"
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return
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motion_settings = self.config.cameras[camera_name].motion
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logger.info(f"Setting motion contour area for {camera_name}: {payload}")
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self.camera_metrics[camera_name]["motion_contour_area"].value = payload
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motion_settings.contour_area = payload # type: ignore[union-attr]
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self.publish(f"{camera_name}/motion_contour_area/state", payload, retain=True)
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def _on_motion_threshold_command(self, camera_name: str, payload: int) -> None:
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"""Callback for motion threshold topic."""
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try:
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payload = int(payload)
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except ValueError:
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f"Received unsupported value for motion threshold: {payload}"
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return
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motion_settings = self.config.cameras[camera_name].motion
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logger.info(f"Setting motion threshold for {camera_name}: {payload}")
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self.camera_metrics[camera_name]["motion_threshold"].value = payload
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motion_settings.threshold = payload # type: ignore[union-attr]
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self.publish(f"{camera_name}/motion_threshold/state", payload, retain=True)
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def _on_recordings_command(self, camera_name: str, payload: str) -> None:
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"""Callback for recordings topic."""
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record_settings = self.config.cameras[camera_name].record
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if payload == "ON":
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if not self.config.cameras[camera_name].record.enabled_in_config:
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logger.error(
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f"Recordings must be enabled in the config to be turned on via MQTT."
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)
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return
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if not record_settings.enabled:
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logger.info(f"Turning on recordings for {camera_name}")
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record_settings.enabled = True
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self.record_metrics[camera_name]["record_enabled"].value = True
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elif payload == "OFF":
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if self.record_metrics[camera_name]["record_enabled"].value:
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logger.info(f"Turning off recordings for {camera_name}")
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record_settings.enabled = False
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self.record_metrics[camera_name]["record_enabled"].value = False
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self.publish(f"{camera_name}/recordings/state", payload, retain=True)
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def _on_snapshots_command(self, camera_name: str, payload: str) -> None:
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"""Callback for snapshots topic."""
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snapshots_settings = self.config.cameras[camera_name].snapshots
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if payload == "ON":
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if not snapshots_settings.enabled:
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logger.info(f"Turning on snapshots for {camera_name}")
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snapshots_settings.enabled = True
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elif payload == "OFF":
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if snapshots_settings.enabled:
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logger.info(f"Turning off snapshots for {camera_name}")
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snapshots_settings.enabled = False
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self.publish(f"{camera_name}/snapshots/state", payload, retain=True)
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def _on_ptz_command(self, camera_name: str, payload: str) -> None:
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"""Callback for ptz topic."""
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try:
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if "preset" in payload.lower():
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command = OnvifCommandEnum.preset
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param = payload.lower().split("-")[1]
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else:
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command = OnvifCommandEnum[payload.lower()]
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param = ""
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self.onvif.handle_command(camera_name, command, param)
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logger.info(f"Setting ptz command to {command} for {camera_name}")
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except KeyError as k:
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logger.error(f"Invalid PTZ command {payload}: {k}")
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