blind.h

it is about embeded system

/*****************the touchscreen blind character input program*************/

   /*******************Author : DONG Shengdong*****************/




 /*you can set the property value by clicking the area,and you can use
   the default the property value,then start to input points.*/

 #ifndef _BLIND_H
 #define _BLIND_H
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <fcntl.h>
 #include "process.h"
 #include "time.h"
 #include "math.h"
 #include "pthread.h"
 #include "loadbmp.h"
 
 
 
 
 /*----------------------the head file----------------------*/
 //内部有一个全局变量 character,调用函数返回一个汉字或词组charater
 int  CharacterInput(); //启动盲文输入法
 
 //内部有一个全局变量 character,调用函数返回一个汉字或词组charater
 int  ProSetting(int *x_dis,int *y_dis);
 //设置特征值,x_dis:横间距,y_dis:列间距;
 //以地址传递方式
 
 int  CharacterInpuAgain(int x_distance,int y_distance);
 //根据特征值,来启动盲文输入法
 //x_distance : x_dis
 //y_distance : y_dis



 
 
 /*--------------Wait until the blind points finish----------------*/
  int ProSetting(int *x_dis,int *y_dis) 
         {
          pthread_t th_b,th_c,th_d,th_e,th_f;            //create four pthreads
          void *retval;
          
          init();
          varinit();
          initpro();
          initpoint();
          
          pthread_create(&th_e,NULL,overtime,0);   //超时检测
          pthread_create(&th_b,NULL,time_count,0); //记时
          pthread_create(&th_d,NULL,property_set,(void *)&th_b);  //特征值设置                
          pthread_create(&th_f,NULL,check_pro,(void *)&th_e);  //检查是否输入完毕
        
          pthread_join(th_b,&retval);
          pthread_join(th_d,&retval);
          pthread_join(th_e,&retval);
          pthread_join(th_f,&retval);
           
           
          *x_dis=property.pointx;
          *y_dis=property.pointy;
          
          return 0;
         }        
     
       
      int  CharacterInput()
         {
          pthread_t th_a,th_b,th_c;
          void *retval;
          
          init();
          varinit();
          initpro();
          initpoint();
          initmatrix();
          
          pthread_create(&th_a,NULL,point_receive,0);  //接收盲点
          pthread_create(&th_b,NULL,time_count,(void *)&th_a); //记时
          pthread_create(&th_c,NULL,process,(void *)&th_b);  //盲点处理
          
          pthread_join(th_a,&retval);
          pthread_join(th_b,&retval);
          pthread_join(th_c,&retval);
           
          return 0;       
         }
         
       int  CharacterInpuAgain(int x_distance,int y_distance)
         {
          pthread_t th_a,th_b,th_c;
          void *retval;
          
          init();
          varinit();
          initpro();
          initpoint();
          initmatrix();
         
          property.pointx=x_distance;
          property.pointy=y_distance;
         
          pthread_create(&th_a,NULL,point_receive,0);
          pthread_create(&th_b,NULL,time_count,(void *)&th_a);
          pthread_create(&th_c,NULL,process,(void *)&th_b);
          
          pthread_join(th_a,&retval);
          pthread_join(th_b,&retval);
          pthread_join(th_c,&retval);
           
          return 0;       
         }
         
  
 #endif     
  
 /****************coding over****************/