test.c~

在ARM+Linux环境下

#include <stdio.h>
#include <string.h>
#include <malloc.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <signal.h>
#include <stdlib.h>
#include "spcav4l.h"
#include <time.h>

#include <stdio.h>

#include <dirent.h>




struct vdIn videoIn0;
struct vdIn videoIn1;
static void Delay(int x)
{
	int i,j,k;
	for(i=0;i<x;i++)
		for(j=0;j<0xff;j++)
			for(k=0;k<0xff;k++);
}
unsigned char rgcon;

int main(int argc, char **argv)
{
   int fd,count;
   
	int grabmethod = 0;
	int format = VIDEO_PALETTE_JPEG;
	int width = 640;
	int height = 480;
 
    DIR *dir,*udisk_dir;
    struct dirent *next,*udisk_next;
    int dir_number=0,disk_num=0;
    int udisk_flag=0;
    
  char videodevice0[] = "/dev/video0";
  char videodevice1[] = "/dev/video1";

  //char jpegfile[] = "/mnt/usb/2.jpg";
  // char t=;
     int h=0;
    //time_t timep;
    //time(&timep);
          
    //strcat(path,ctime(&timep));
    //strcat(path,picformat);
   
    //printf(" :%s \n",path);
     
   
 
   if((fd=open("/dev/led",O_RDONLY))==-1)
       {
        perror("open error");
        exit(1);
       }
   
   
    /*不断检测读中断传回来的值，检测到则抓图*/
 while(1)
 {
      if(count=read(fd,&rgcon,4))//读中断传回来的值
                 {
           //printf("rgcon :%x\n",rgcon);
           //exit(1);    
                  }
       Delay(70);

      if(rgcon==3) //检测到有中断发生
            {                   
      //printf("rgcon :%x \n",rgcon);
     
        char buff0[10];
        char buff1[10];
        char path0[128] = "/mnt/usb/A";
        char path1[128] = "/mnt/usb/B";
          h++;
      //char picformat[]=".jpg";
        sprintf(buff0,"%d",h);//把h变量格式转换
        strcat(path0,buff0);//字符串连接函数
        strcat(path0,".jpg");
        sprintf(buff1,"%d",h);//把h变量格式转换
        strcat(path1,buff1);//字符串连接函数
        strcat(path1,".jpg");
                 //打开目录
   			dir = opendir("/proc/bus/usb/001");
    		   if (!dir)
    			       {
        		fprintf(stderr, "Cannot open /dev/scsi\n");
				exit(1);
    			       }
    		              //读取目录内文件名
   		 	while((next = readdir(dir)) != NULL)
    			      {
    			dir_number++;
            
    			       }
            printf("dir_number is:%d\n",dir_number);
    		   closedir(dir);
    		 
    						//如果文件名大于6(除了 "." "..")说明U盘已经存在
   							if(dir_number>6)
    							{
    								udisk_dir = opendir("/dev/scsi/host0/bus0/target0/lun0");
    								if (!udisk_dir)
    										{
        									fprintf(stderr, "Cannot open /dev/scsi\n");
													exit(1);
    										}
   		 							while((udisk_next = readdir(udisk_dir)) != NULL)
    										{
    											disk_num++;
    										}
    									
    									dir_number=0;
    									udisk_flag=1;
    									//如果文件个数大于4，说明U盘是由N块flash组成，需要挂载disc
    									if(disk_num>4)
    	  										system("mknod /dev/udisk b 8 0");//system("某DOS命令")
    	  							else
    	  										system("mknod /dev/udisk b 8 1");
    	  							system("mount -t vfat /dev/udisk /mnt/usb");
    	  							printf("The udisk has installed\r\n");
    							}
    						
    	
    						if(dir_number==6)
    							{
    								dir_number=0;
    								udisk_flag=0;
    	  						system("umount /mnt/usb");
    	  						system("rm -rf /dev/udisk");
    	  						system("/test/udisk stop");
    	  						system("/test/udisk start");
    	  						printf("The udisk has uninstalled\r\n");
    							}
    						
    		dir_number=0; 
    		disk_num=0;
    		sleep(1); 
        memset(&videoIn0, 0, sizeof (struct vdIn));
        memset(&videoIn1, 0, sizeof (struct vdIn));
	      if(init_videoIn(&videoIn0, videodevice0, width, height, format,grabmethod)== 0)//第一个摄像头抓图
                      {
    
    	    Delay(200);
          v4lGrab(&videoIn0, path0);                //抓图函数
          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",path0);
                        }
	     else	printf("can't open your camera!\n");
  
        close_v4l (&videoIn0);
  
     if(init_videoIn(&videoIn1, videodevice1, width, height, format,grabmethod)== 0)//第二个摄像头抓图
                  {
    	  Delay(200);
                     
        v4lGrab(&videoIn1, path1);                //抓图函数
        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",path1);
	          }
	   else	printf("can't open your camera!\n");
	   close_v4l (&videoIn1); 
            }
 
  rgcon=0;

  

    }
    
  //close(fd);

   
   
   return 0;
}