We use the line duration several times in the IPAIPU3. Instead of recalculating it each time, cache the value as a utils::Duration. ExposureTime and FrameDuration units are in micro-seconds, cast the Duration accordingly. As sensorInfo is no longer used in updateSessionConfiguration remove the reference to it. Signed-off-by: Jean-Michel Hautbois <jeanmichel.hautbois@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>