if w_fix != w_req or h_fix != h_req:
frame = cv2.resize(frame, w_fix, h_fix)
w_frame, h_frame = w_fix, h_fix
return wx.Image(w_frame, h_frame, cv2.cvtColor(frame, cv2.COLOR_BGR2RGB))
def resizeFrame(frame, w_req, h_req):
h_frame, w_frame, layers = frame.shape
w_fix, h_fix = rescaleToRect(w_frame, h_frame, w_req, h_req)
if w_fix != w_req or h_fix != h_req:
frame = cv2.resize(frame, w_fix, h_fix)
return frame
jpegFramesCacheMax = 30 * 60
jpegFramesCache = LRUCache(jpegFramesCacheMax)
def frameToJPeg(frame):
jpeg = cv2.imencode('.jpg', frame)[1].tostring()
jpegFramesCache[bytes(jpeg)] = frame
return jpeg
def jpegToFrame(jpeg):
key = bytes(jpeg)
if key in jpegFramesCache:
return jpegFramesCache[key]
frame = cv2.imdecode(np.frombuffer(jpeg, np.uint8), 1)
jpegFramesCache[key] = frame
return frame
