As an AI language model, I cannot determine the specific implementation or context of this code. However, based on the provided function signature, it seems that this function is designed to add a video refresh callback function in the program. The callback function takes a pointer to a Frame object as an argument and returns an integer value.
The purpose of this callback function is likely to update the video display with the latest frame data. By adding this callback function to the program, the video display can be automatically refreshed whenever new frame data is available.
