Member functions should be implemented in the .cpp file in the same order as in the class definition, within each access group. Move them to the right location. While at it, move load() before loadFile() in the class definition to match execution order, making the code easier to read. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com> Reviewed-by: Isaac Scott <isaac.scott@ideasonboard.com>