Function mmal_sys::mmal_port_parameter_get_rational

pub unsafe extern "C" fn mmal_port_parameter_get_rational(
    port: *mut MMAL_PORT_T, 
    id: u32, 
    value: *mut MMAL_RATIONAL_T
) -> Type

Helper function to get the value of a rational parameter. @param port port on which to get the parameter @param id parameter id @param value pointer to where the value will be returned

@return MMAL_SUCCESS or error