基于嵌入式Linux的视频采集系统16-----源程序----v4l_driver.h

本文来自：
http://blog.chinaunix.net/uid-23093301-id-86405.html

#ifndef V4L12_DRIVER_H_

#define V4L12_DRIVER_H_

#include <iostream>

#include <string>

using namespace std;

#include <stdio.h>

#include <string.h>

#include <fcntl.h>

#include <unistd.h>

#include <errno.h>

#include <sys/ioctl.h>

#include <sys/mman.h>

#include <sys/select.h>

#include <linux/videodev.h>

#include "def.h"

#define NB_BUFFER 4

#define DHT_SIZE 432

class CVideoDriver

{

//public:

// static CVideoDriver& instance();

//private:

// static CVideoDriver* globle_ptr;

public:

CVideoDriver();

~CVideoDriver();

int start(const string& dev,const int& width,const int& height,const int& fps,const int& format);

int capture(unsigned char* pimage);

int close();

int enalbe();

int disable();

//! for control

int v4l2_up_control(const int& control);

private:

/******************** cnfig Private Field ************************/

video_inputm_video_input;

string usb_video_device_name;

int m_cap_width;

int       m_cap_height;

int m_cap_fps;

int m_cap_fmt;

private:

int init_device();

/* @fn

* @brief set capture format

*/

int set_format();

/* @fn  

* brief set framerate

*/ 

int set_framerate();

/*@fn 

* @brief set maped buffer

*/

int set_map_buffer();

int isv4l2Control(const int& control,struct v4l2_queryctrl& queryctrl);

int v4l2GetControl(const int& control) ;

};

#endif