ea5f451c56
To reduce unnecessary lens movements, allow the CDAF-based search procedure to start from either end of the range; or if not near an end, from the current lens position. This sometimes requires a second coarse scan, if the first one started in the middle and did not find peak contrast. Shorten the fine scan from 5 steps to 3 steps; allow fine scan to be omitted altogether when "step_fine": 0 in the tuning file. Move updateLensPosition() out of startProgrammedScan() to avoid calling it more than once per iteration. Signed-off-by: Nick Hollinghurst <nick.hollinghurst@raspberrypi.com> Signed-off-by: Naushir Patuck <naush@raspberrypi.com> Reviewed-by: Naushir Patuck <naush@raspberrypi.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>