基于USB摄像头的IP监控程序，适应提供V4L2接口的linux内核-usb video capture based IP camera for linux 2.6.xx with video for linux 2 APIs

ARM上采集usb摄像头视频数据，经h.264压缩，使用udp传输-ARM usb camera video data collected by h.264 compression, use the udp transmission

v4l2在linux视频采集底层驱动，完全实现在linux下usb摄像头的视频采集，希望大家多多提意见！-v4l2 video capture underlying driver in linux, fully realized under linux usb camera video capture, I hope you do so!