www.pudn.com > jpeg1.zip > CUT.C

#include  
#include  
#include  
#include  
#include  
#define SIZE (unsigned int )(32*1024) 
 
 int main() 
 { 
   char filenamein[30],filenameout[30]; 
   register int i,j; 
   unsigned int segp1; 
   int handle,SX,SY,stat,dim_X,dim_Y,X,Y,s1; 
   char huge *p; 
/*-------------------------------------------------------------------------*/ 
   printf("Enter the source file's name:"); 
   scanf("%s",filenamein); 
   printf("Enter the object file's name:"); 
   scanf("%s",filenameout); 
   printf("Enter the dimension of the image:"); 
   scanf("%d,%d",&dim_X,&dim_Y); 
   printf("Enter the object start point:"); 
   scanf("%d,%d",&SX,&SY); 
   printf("Enter the object size of the image:"); 
   scanf("%d,%d",&X,&Y); 
   stat=allocmem(64*256,&segp1); 
   if(stat!=-1){ 
      printf("Failed:Max Memory available is %uk\n",stat/64); 
      exit(0); 
     } 
   p=(char huge *)MK_FP(segp1,0); 
   handle=open(filenamein,O_RDWR|O_BINARY,S_IREAD); 
   if(handle==-1){ 
      printf("Failed to open this file!\n"); 
      freemem(segp1);  abort(1); 
     } 
   s1=dim_X/32*dim_Y/1024; 
   if (s1>=1) 
     for(i=0;i<=s1;i++){ 
	read(handle,(void *)p,SIZE);  p=p+SIZE; 
       } 
    else read(handle,(void *)p,dim_X*dim_Y); 
   close(handle); 
   handle=open(filenameout,O_CREAT|O_TRUNC|O_RDWR|O_BINARY,S_IREAD|S_IWRITE); 
   if(handle==-1){ 
      printf("Failed to open this object file!\n"); 
      freemem(segp1);   abort(1); 
     } 
   segp1+=(dim_X/16)*SY;  p=(char huge *)MK_FP(segp1,0); 
   p+=SX; 
   for (i=0;i