[V4L2] Opening and Closing Devices

 

 

Video For Linux Two(V4L2) is a video capture application programming interface for Linux, supporting many USB 

webcams, TV tuners, and other devices. V4L2 is closely integrated with the Linux kernel. Video4Linux was named

after Video for Windows(which is sometimes abbreviated "V4W"), but is not technically related to it.

 

If you connect the right device, "video0" will appear in "/dev" directory. So, how we open the device?

 

Example Code

 

int fd;

fd = open("/dev/video0", O_RDWR);

if(fd < 0)
{
	printf("Failed to open device\n");
	return -1;
}

close(fd);

 

It's so easy. isn't it?

 

아...영어로 써봤는데 귀찮네 ㅋㅋㅋ 영어공부도 할겸 영어로 써야징.