Create specialized APIs like is_audio_frame_connected(msg_name), is_video_frame_connected(msg_name), and is_data_connected(msg_name), as well as a general API like is_msg_connected(msg_type, msg_name)

[halajohn]

Since in the world of TEN, the message names for cmd, data, audio_frame, and video_frame are in different namespaces (so there can be messages with the same name for audio frames, data, etc.), the general version of is_msg_connected requires the msg_type parameter, while the specialized APIs provide a convenient way to call the function.