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MQTT support for all objects for each camera & zone (#2908)

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Nicolas Mowen 2022-03-10 05:03:00 -07:00 committed by GitHub
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2
docs/docs/integrations/mqtt.md
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@ -18,10 +18,12 @@ Causes frigate to exit. Docker should be configured to automatically restart the
### `frigate/<camera_name>/<object_name>`
Publishes the count of objects for the camera for use as a sensor in Home Assistant.
`all` can be used as the object_name for the count of all objects for the camera.
### `frigate/<zone_name>/<object_name>`
Publishes the count of objects for the zone for use as a sensor in Home Assistant.
`all` can be used as the object_name for the count of all objects for the zone.
### `frigate/<camera_name>/<object_name>/snapshot`

49
frigate/object_processing.py
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@ -554,13 +554,24 @@ class CameraState:
if not obj.false_positive
)
# keep track of all labels detected for this camera
total_label_count = 0
# report on detected objects
for obj_name, count in obj_counter.items():
total_label_count += count
if count != self.object_counts[obj_name]:
self.object_counts[obj_name] = count
for c in self.callbacks["object_status"]:
c(self.name, obj_name, count)
# publish for all labels detected for this camera
if total_label_count != self.object_counts.get("all"):
self.object_counts["all"] = total_label_count
for c in self.callbacks["object_status"]:
c(self.name, "all", total_label_count)
# expire any objects that are >0 and no longer detected
expired_objects = [
obj_name
@ -568,6 +579,10 @@ class CameraState:
if count > 0 and obj_name not in obj_counter
]
for obj_name in expired_objects:
# Ignore the artificial all label
if obj_name == "all":
continue
self.object_counts[obj_name] = 0
for c in self.callbacks["object_status"]:
c(self.name, obj_name, 0)
@ -889,9 +904,14 @@ class TrackedObjectProcessor(threading.Thread):
for obj in camera_state.tracked_objects.values()
if zone in obj.current_zones and not obj.false_positive
)
total_label_count = 0
# update counts and publish status
for label in set(self.zone_data[zone].keys()) | set(obj_counter.keys()):
# Ignore the artificial all label
if label == "all":
continue
# if we have previously published a count for this zone/label
zone_label = self.zone_data[zone][label]
if camera in zone_label:
@ -906,6 +926,10 @@ class TrackedObjectProcessor(threading.Thread):
new_count,
retain=False,
)
# Set the count for the /zone/all topic.
total_label_count += new_count
# if this is a new zone/label combo for this camera
else:
if label in obj_counter:
@ -916,6 +940,31 @@ class TrackedObjectProcessor(threading.Thread):
retain=False,
)
# Set the count for the /zone/all topic.
total_label_count += obj_counter[label]
# if we have previously published a count for this zone all labels
zone_label = self.zone_data[zone]["all"]
if camera in zone_label:
current_count = sum(zone_label.values())
zone_label[camera] = total_label_count
new_count = sum(zone_label.values())
if new_count != current_count:
self.client.publish(
f"{self.topic_prefix}/{zone}/all",
new_count,
retain=False,
)
# if this is a new zone all label for this camera
else:
zone_label[camera] = total_label_count
self.client.publish(
f"{self.topic_prefix}/{zone}/all",
total_label_count,
retain=False,
)
# cleanup event finished queue
while not self.event_processed_queue.empty():
event_id, camera = self.event_processed_queue.get()