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8b8f33f488
* Revert "webcam: remove other cv2 usage (#33236)" This reverts commit0cade54015. * Revert "remove cv2 usage (#33101)" This reverts commit144e9e271c. * Revert "remove opencv-python-headless (#33082)" This reverts commit488e08507a. * update uv.lock * keep av bgr2nv12 * rename
31 lines
816 B
Python
31 lines
816 B
Python
import av
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import cv2 as cv
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class Camera:
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def __init__(self, cam_type_state, stream_type, camera_id):
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try:
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camera_id = int(camera_id)
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except ValueError: # allow strings, ex: /dev/video0
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pass
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self.cam_type_state = cam_type_state
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self.stream_type = stream_type
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self.cur_frame_id = 0
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self.cap = cv.VideoCapture(camera_id)
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self.W = self.cap.get(cv.CAP_PROP_FRAME_WIDTH)
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self.H = self.cap.get(cv.CAP_PROP_FRAME_HEIGHT)
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@classmethod
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def bgr2nv12(self, bgr):
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frame = av.VideoFrame.from_ndarray(bgr, format='bgr24')
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return frame.reformat(format='nv12').to_ndarray()
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def read_frames(self):
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while True:
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ret, frame = self.cap.read()
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if not ret:
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break
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yuv = Camera.bgr2nv12(frame)
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yield yuv.data.tobytes()
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self.cap.release()
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