v4l2.h.svn-base

一个简单的摄像头播放程序,用qt做的界面

#ifndef		__V4L2_H__
#define		__V4L2_H__


#include <linux/videodev2.h>



#ifdef __cplusplus
extern "C" {
#endif


typedef	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