usbcamera是基于V4L2协议的对USB接口摄像头的JNI控制代码,android应用可以直接调用它以实现对usb camera的控制.-usbcamera is used to control usb-if camera,based on V4L2 protocol,and is used to operate the camera under the android platform.

usb 通信协议，控制usb读写等操作，适合加密狗等方面应用-Usb communication protocol, control usb read and write operations, suitable for encryption dogs and other applications