The V4L2 specification defines the sensor test pattern modes through a menu control, where a numerical index is associated to a string that describes the test pattern. The index-to-pattern mapping is driver specific and requires a corresponding representation in the library. Add to the static list of CameraSensorProperties a map of indexes to libcamera::controls::TestPatternModes values to be able to map the indexes returned by the driver to the corresponding test pattern mode. Signed-off-by: Hirokazu Honda <hiroh@chromium.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>