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Optimally handle cameras that don't match the canvas aspect ratio

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This commit is contained in:
Nick Mowen 2023-06-07 10:40:53 -06:00
parent ff18c5e5a3
commit 0dee3f29ad
1 changed files with 18 additions and 9 deletions
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27
frigate/output.py
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@ -211,7 +211,7 @@ class BirdsEyeFrameManager:
),
)
self.cameras[camera] = {
"dimensions": (settings.detect.width, settings.detect.height),
"dimensions": [settings.detect.width, settings.detect.height],
"last_active_frame": 0.0,
"current_frame": 0.0,
"layout_frame": 0.0,
@ -276,12 +276,21 @@ class BirdsEyeFrameManager:
"""Calculate the optimal layout for cameras."""
camera_layout: list[list[any]] = []
camera_layout.append([])
canvas_aspect = canvas[0] / canvas[1]
x = 0
y = 0
y_i = 0
max_height = 0
for camera in cameras_to_add:
if (x + self.cameras[camera]["settings"][0] * coefficient) <= canvas[0]:
camera_dims = self.cameras[camera]["dimensions"]
camera_aspect = camera_dims[0] / camera_dims[1]
# if the camera aspect ratio is less than canvas aspect ratio, it needs to be scaled down to fit
if camera_aspect < canvas_aspect:
camera_dims[0] *= camera_aspect / canvas_aspect
camera_dims[1] *= camera_aspect / canvas_aspect
if (x + camera_dims[0] * coefficient) <= canvas[0]:
# insert if camera can fit on current row
camera_layout[y_i].append(
(
@ -289,15 +298,15 @@ class BirdsEyeFrameManager:
(
x,
y,
int(self.cameras[camera]["settings"][0] * coefficient),
int(self.cameras[camera]["settings"][1] * coefficient),
int(camera_dims[0] * coefficient),
int(camera_dims[1] * coefficient),
),
)
)
x += int(self.cameras[camera]["settings"][0] * coefficient)
x += int(camera_dims[0] * coefficient)
max_height = max(
max_height,
int(self.cameras[camera]["settings"][1] * coefficient),
int(camera_dims[1] * coefficient),
)
else:
# move on to the next row and insert
@ -311,12 +320,12 @@ class BirdsEyeFrameManager:
(
x,
y,
int(self.cameras[camera]["settings"][0] * coefficient),
int(self.cameras[camera]["settings"][1] * coefficient),
int(camera_dims[0] * coefficient),
int(camera_dims[1] * coefficient),
),
)
)
x += int(self.cameras[camera]["settings"][0] * coefficient)
x += int(camera_dims[0] * coefficient)
return (camera_layout, y + max_height)