Set a media's input MRL. This will delete all existing inputs and
    add the specified one.
    @param p_instance: the instance.
    @param psz_name: the media to work on.
    @param psz_input: the input MRL.
    @return: 0 on success, -1 on error.

def libvlc_vlm_set_input(p_instance, psz_name, psz_input):
    '''Set a media's input MRL. This will delete all existing inputs and
    add the specified one.
    @param p_instance: the instance.
    @param psz_name: the media to work on.
    @param psz_input: the input MRL.
    @return: 0 on success, -1 on error.
    '''
    f = _Cfunctions.get('libvlc_vlm_set_input', None) or \
        _Cfunction('libvlc_vlm_set_input', ((1,), (1,), (1,),), None,
                    ctypes.c_int, Instance, ctypes.c_char_p, ctypes.c_char_p)
    return f(p_instance, psz_name, psz_input)