#ifndef		__V4L2_H__#define		__V4L2_H__#include <linux/videodev2.h>#ifdef __cplusplusextern "C" {#endiftypedef	struct{	void	*start;	size_t	length;}buffer;typedef	struct{	int			fd;	int			n_buffers;	char			*dev_name;	buffer			*buffers;	struct v4l2_buffer	buf;	struct v4l2_format 	fmt;}pass_data;void init_dev (pass_data *s);void stop_dev (pass_data *s);void read_frame(pass_data *s);void return_data (pass_data *s);void init_mmap(pass_data *s);void init_device(pass_data *s);void open_device(pass_data *s);void start_capturing(pass_data *s);void close_device(pass_data *s);void stop_capturing(pass_data *s);void stop_device(pass_data *s);void errno_exit(const char *s);int xioctl(int fd, int request, void *arg);void process_image(void *p, pass_data *s, int i);#ifdef __cplusplus}#endif#endif