[Camera] 多個程序存取 V4L2 Camera

這篇寫得很多方法, 但是都不成功 :(

另外紀錄一下, 這幾篇
* http://www.sistemasembarcados.org/2016/04/05/orange-pi-camera-with-v4l2loopback-vidcopy/
 

[Camera] Success Story of the Open-Source Camera Stack: The Nokia N9 Case

找時間k一下吧

http://free-electrons.com/pub/video/2011/elce/elce-2011-pinchart-camera-stack-nokia-n9-450p.webm