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Add config for maximum number of cameras

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This commit is contained in:
Nicolas Mowen 2024-02-02 07:22:28 -07:00
parent 72e8551c62
commit 30349782ec
1 changed files with 38 additions and 2 deletions
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40
frigate/output.py
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@ -288,6 +288,9 @@ class BirdsEyeFrameManager:
self.stop_event = stop_event
self.camera_metrics = camera_metrics
if config.birdseye.layout.max_cameras:
self.last_refresh_time = 0
# initialize the frame as black and with the Frigate logo
self.blank_frame = np.zeros(self.yuv_shape, np.uint8)
self.blank_frame[:] = 128
@ -393,7 +396,7 @@ class BirdsEyeFrameManager:
"""Update to a new frame for birdseye."""
# determine how many cameras are tracking objects within the last 30 seconds
active_cameras = set(
active_cameras: set[str] = set(
[
cam
for cam, cam_data in self.cameras.items()
@ -402,6 +405,28 @@ class BirdsEyeFrameManager:
]
)
max_cameras = self.config.birdseye.layout.max_cameras
max_camera_refresh = False
if max_cameras:
now = datetime.datetime.now().timestamp()
if len(active_cameras) == max_cameras and now - self.last_refresh_time < 10:
# don't refresh cameras too often
active_cameras = self.active_cameras
else:
limited_active_cameras = sorted(
active_cameras,
key=lambda active_camera: (
self.cameras[active_camera]["current_frame"]
- self.cameras[active_camera]["last_active_frame"]
),
)
active_cameras = limited_active_cameras[
: self.config.birdseye.layout.max_cameras
]
max_camera_refresh = True
self.last_refresh_time = now
# if there are no active cameras
if len(active_cameras) == 0:
# if the layout is already cleared
@ -415,7 +440,18 @@ class BirdsEyeFrameManager:
return True
# check if we need to reset the layout because there is a different number of cameras
reset_layout = len(self.active_cameras) - len(active_cameras) != 0
if len(self.active_cameras) - len(active_cameras) == 0:
if (
len(self.active_cameras) == 1
and self.active_cameras[0] == active_cameras[0]
):
reset_layout = True
elif max_camera_refresh:
reset_layout = True
else:
reset_layout = False
else:
reset_layout = True
# reset the layout if it needs to be different
if reset_layout: