13 lines
722 B
Python
13 lines
722 B
Python
"""Bounded per-camera frame window. No copying of image tensors across the BT API."""
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from collections import deque
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class FrameWindow:
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def __init__(self,maximum=32):self.frames=deque(maxlen=maximum)
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def add(self,stamp,camera,path):
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if self.frames and stamp<self.frames[-1]['stamp']:self.frames.clear()
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if self.frames and stamp==self.frames[-1]['stamp']:
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views=self.frames[-1]['views']
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if camera in views or len(views)<3:views[camera]=path
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else:self.frames.append(dict(stamp=stamp,views={camera:path}))
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def since(self,after,now):
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return [dict(stamp=f['stamp'],views=dict(f['views'])) for f in self.frames if after<=f['stamp']<=now and now-f['stamp']<=10]
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