参考
1.
https://www.cnblogs.com/hzhida/archive/2012/05/29/2524351.html
2.
https://www.cnblogs.com/hzhida/archive/2012/05/29/2524397.html
3.
https://www.cnblogs.com/hzhida/archive/2012/05/29/2524417.html
4.
https://www.cnblogs.com/hzhida/archive/2012/05/29/2524422.html
5.
http://v4l.videotechnology.com/dwg/v4l2.pdf
完