Type Definition mmal_sys::MMAL_PORT_BH_CB_T

type MMAL_PORT_BH_CB_T = Option<unsafe extern "C" fn(port: *mut MMAL_PORT_T, buffer: *mut MMAL_BUFFER_HEADER_T)>;

Definition of the callback used by a port to send a \ref MMAL_BUFFER_HEADER_T back to the user.

@param port The port sending the buffer header. @param buffer The buffer header being sent.