server.c

linux下用c语言写的一个图像抓拍程序。

/****************************************************************************
Mouse-capture Version 1:2006-6-29
This program is used to get one picture from a jpeg webcam to test whether the webcam's drive is successfully installed.
It is made for ARM9.Of course it can be used on PC if you modify the complier:)
It is modified from servfox by daily3(戴丽-戴小鼠 in Hefei University of Technology and HHCN-BBS).
Thanks to 我爱狗熊.
If you have problems ,you can contact me.
Email:[e-mail]
Wish you some useful help!
Best Wish to the orignal authors! Thank you very much!

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static int GetVideoPict (struct vdIn *vd);//获取图片属性信息。
static int SetVideoPict (struct vdIn *vd);//设置图片属性。
static int isSpcaChip (const char *BridgeName);//测试芯片类型
static int GetStreamId (const char *BridgeName); //测试输出数据的格式
static int GetDepth (int format);//获取颜色深度。
void exit_fatal(char *messages);//错误显示。
int init_videoIn(struct vdIn *vd,char *device,int width,int height,int format,int
grabmethod);//初始化设备。
int convertframe(unsigned char *dst,unsigned char *src, int width,int height, int
formatIn, int size);//把共享缓冲区中的数据放到一个变量中，通知系统已获得一
帧。
int v4lGrab (struct vdIn *vd,char *filename );//从摄像头采集图片。
int close_v4l (struct vdIn *vd);//关闭摄像头。
int get_jpegsize (unsigned char *buf, int insize);//获取jpeg图片大小
****************************************************************************/

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "spcav4l.h"

struct vdIn videoIn;

int main (int argc, char *argv[])
{
	char videodevice[] = "/dev/video0";
	char jpegfile[] = "/tmp/1.jpg";
	int grabmethod = 0;
	int format = VIDEO_PALETTE_JPEG;
	int width = 352;
	int height = 288;

  	memset(&videoIn, 0, sizeof (struct vdIn));
	if(init_videoIn(&videoIn, videodevice, width, height, format,grabmethod)== 0)
   {
    	v4lGrab(&videoIn, jpegfile);
        if(grabmethod==1)
        printf("you use mmap method!\n");
        else if(grabmethod==0)
  	printf("you use read method!\n");
	printf("you have get a picture in %s\n",jpegfile);
	}
	else
	printf("can't open your camera!\n");
	close_v4l (&videoIn);
	return 0;
}