libcamera: v4l2_controls: Cache query control information

Cache the V4L2 control info retrieved with VIDIOC_QUERY_EXT_CTRL at control listing time for later use. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
2020-02-27 14:48:01 +01:00
parent 8daf20485b
commit 2c6e6fbc96
2 changed files with 3 additions and 0 deletions
@@ -48,6 +48,7 @@ private:
 			    const struct v4l2_ext_control *v4l2Ctrls,
 			    unsigned int count);

+	std::map<unsigned int, struct v4l2_query_ext_ctrl> controlInfo_;
 	std::vector<std::unique_ptr<V4L2ControlId>> controlIds_;
 	ControlInfoMap controls_;
 	std::string deviceNode_;